CN107184334B

CN107184334B - bed

Info

Publication number: CN107184334B
Application number: CN201710059724.7A
Authority: CN
Inventors: 塚田将平; 稻叶吉纪; 久米洋平; 河上日出生
Original assignee: Panasonic Intellectual Property Management Co Ltd
Current assignee: Panasonic Intellectual Property Management Co Ltd
Priority date: 2016-03-14
Filing date: 2017-01-24
Publication date: 2021-05-14
Anticipated expiration: 2037-01-24
Also published as: TW201731473A; KR20170106899A; JP2017164065A; CN107184334A; TWI722100B; JP6722868B2

Abstract

A bed (10) includes a bed main body (100) having a substantially rectangular plate-like shape, a bed main body bottom member (110) that can extend and bend in the longitudinal direction, and a bed supporting the bed main body bottom member (110) a base part (150); and a wheelchair part (200), having a substantially rectangular plate-like shape, including a chair bottom part (210) that can extend and bend in the longitudinal direction, a bed main body part (100), and a wheelchair part (200) ) has a structure selectively combined between a first combined state and a second combined state in which one side of the bed main body bottom part (110) along the length direction and the edge of the chair bottom part (210) One side in the longitudinal direction is substantially parallel and opposite to form the bed surface on the same side, and the second combined state is that the other side of the bed body bottom member (110) along the longitudinal direction and the chair bottom member (210) are in a state of being substantially parallel. The other side along the longitudinal direction is substantially parallel and opposed to form a state of the same bed surface.

Description

Bed

Technical Field

The present invention relates to a bed in which a wheelchair portion and a bed main body portion are combined.

Background

As a technique for facilitating movement (transfer) between a wheelchair and a bed by a patient who is difficult to walk, an elderly person (hereinafter, referred to as a care-target person), or the like, or assisting the movement by a caregiver, a bed for nursing use having a structure in which a wheelchair having a flat backrest and a seat surface is coupled to a bed main body to form an entire bed surface has been proposed (see patent documents 1 and 2).

(Prior art document)

(patent document)

Patent document 1: japanese registered Utility model No. 3169742

Patent document 2: japanese patent laid-open publication No. 2011-115487

In a conventional nursing bed in which a wheelchair and a bed main body are combined, a head-side direction and a foot-side direction in a longitudinal direction of the bed are fixed in at least a part of the structure of the wheelchair. The movement direction of the wheelchair for separating from the bed main body is fixed to either the right direction or the left direction of each individual care recipient in the bed.

However, in the market, there is also a demand for a bed of the type in which the wheelchair is disengaged in either direction. Each type of bed may be selected according to the preference of the care-receiver, or may be selected depending on the shape of a room in which the bed is installed or the arrangement of other furniture. In addition, depending on the location and degree of the body of the care-receiver, the person may be selected because it is difficult or dangerous to move the body in a certain direction.

Manufacturers who want to satisfy such market demands have had to manufacture two types of products for sale or manufacture them in order from a nursing bed having a conventional structure, and thus have had problems such as an increase in manufacturing cost, difficulty in determining demand, difficulty in adjusting inventory of products and parts, and a long delivery period.

Further, when a care recipient who uses such a bed on a daily basis moves a room, moves a living room, or the like, there is a problem that it is necessary to consider not only the size of the bed but also the direction in which the wheelchair portion can be separated from the bed main body portion.

Disclosure of Invention

Accordingly, the present invention provides a bed in which the left and right positions of the wheelchair portion and the bed main body portion can be replaced.

A bed according to an embodiment of the present invention includes: a bed body part having a substantially rectangular plate-like shape and including a bed body bottom part which is stretchable in a longitudinal direction and a bed base part which supports the bed body bottom part; and a wheelchair portion having a substantially rectangular plate-like shape and including a chair bottom member that is extendable and bendable in a longitudinal direction, the bed body portion and the wheelchair portion having a structure that is selectively coupled between a first coupled state in which one side of the bed body bottom member in the longitudinal direction is substantially parallel to and faces one side of the chair bottom member in the longitudinal direction to form a bed surface on the same plane, and a second coupled state in which the other side of the bed body bottom member in the longitudinal direction is substantially parallel to and faces the other side of the chair bottom member in the longitudinal direction to form a bed surface on the same plane.

The present invention relates to a bed, which can replace the left and right positions of a wheelchair portion and a bed main body portion, and each individual having the same structure can be used for different uses.

Drawings

Fig. 1 is a perspective view of the bed of example 1 in a state of being combined in one use form.

Fig. 2 is a perspective view of the bed of example 1 in a state separated in a use configuration.

Fig. 3 is a perspective view of the bed of example 1 in a state separated in another use form.

FIG. 4 is an exploded perspective view of a bed body in one use form of the bed according to example 1.

Fig. 5 is an exploded perspective view of a bed main body in another use form of the bed according to example 1.

Fig. 6 is a perspective view of the bed of example 2 in a state of being combined in one use form.

Fig. 7A is a plan view of an abutment portion in one use form of the bed of embodiment 2.

Fig. 7B is a plan view of an abutment portion of a bed according to example 2 in another use form.

Fig. 8A is a front view of the wheelchair according to embodiments 1 and 2.

Fig. 8B is a front view of the wheelchair according to embodiments 1 and 2.

Fig. 9 is a front view of the beds of examples 1 and 2.

Detailed Description

Hereinafter, examples of the present invention will be described. The embodiments described below are each a preferred specific example of the present invention. Therefore, the numerical values, shapes, materials, constituent elements, arrangement and connection forms of the constituent elements, and the like shown in the following embodiments are merely examples and do not limit the spirit of the present invention. Among the constituent elements of the following examples, constituent elements not described in the embodiments showing the uppermost concept are described as arbitrary constituent elements.

The drawings used in the following description are schematic drawings, and do not accurately show the relationship between the shape and size of each component. Further, even if the elements included in the structure of the bed according to the present disclosure are elements that do not require technical explanation in the present disclosure, the elements may not be illustrated. The same reference numerals are used for the common components in the drawings, and the description thereof will not be repeated.

(example 1)

[1. Structure ]

[ 1-1. summary ]

First, an outline of a bed of example 1 will be described with reference to fig. 1 to 3.

Fig. 1 and 2 are oblique views of the bed 10 of embodiment 1, viewed from the same direction. The bed 10 includes a bed main body 100 and a wheelchair portion 200, and the bed main body 100 and the wheelchair portion 200 are separable. Fig. 1 shows a state in which the bed main body portion 100 and the wheelchair portion 200 are not separated from each other, that is, are coupled to each other, and fig. 2 shows a state in which the bed main body portion 100 and the wheelchair portion 200 are separated from each other. The wheelchair portion 200 moves in parallel along the illustrated z-axis so that the bed 10 transitions between the engaged state shown in fig. 1 and the disengaged state shown in fig. 2. An arrow line T1 in the figure shows a moving direction in which the wheelchair portion 200 is used for separation from the bed main body portion 100, and an arrow line T2 shows a moving direction in which the wheelchair portion 200 is used for coupling with the bed main body portion 100 (the same applies hereinafter). In the bed 10, the bed main body 100, and the wheelchair portion 200 shown in fig. 1 and 2, the feet are located at appropriate positions on the body of the care recipient in the positive x-axis direction and the head is located in the negative x-axis direction, respectively, when viewed from the center of each of the bed.

[ 1-2. outline of bed body portion ]

Next, an outline of the bed main body portion 100 will be described.

The bed main body part 100 includes a bed main body bottom part 110, an upper body support member 120a, a knee support member 120c, a leg support member 120d, a bed base part 150, and a wheelchair securing part 180.

The bed main body bottom member 110 is a substantially rectangular plate-like member that supports the body of the person to be cared. Here, the substantially rectangular shape may be a long and narrow shape suitable for the length of the bed, and for example, each side may not be a straight line, and the corners may be more rounded than the illustrated shape. Here, the plate shape may be a substantially flat plate shape, and may have irregularities on each surface like a top surface (a surface facing the positive direction of the y axis, the same applies hereinafter) as illustrated in the drawings, or may have a through hole. In use, a cushioning member (not shown) such as a bed pad or a mattress may be placed on the top surface, and the bed main body base 110 may support the person to be cared via the cushioning member. In the present embodiment, the bed main body bottom member 110 includes five plate-like members (a back bottom member 110a, a waist bottom member 110b, a knee bottom member 110c, a leg bottom member 110d, and a foot bottom member 110e in this order) arranged in the longitudinal direction, and these adjacent two members are connected to each other so as to be rotatable about a common axis, and are configured to be stretchable in the longitudinal direction of the bed main body bottom member 110.

The upper body support member 120a, the knee support member 120c, and the leg support member 120d shown in fig. 2 are part of a plurality of support members (hereinafter, also referred to collectively as the support members 120) provided in the bed main body portion 100, and the details of each will be described later with reference to other figures. The support member 120 supports the bed main body bottom member 110 while being supported by the bed base part 150.

The support member 120 includes one or more link mechanisms (not shown) in which a plurality of beams, shafts, and the like are combined to provide mobility, and further includes an electric actuator or a pneumatic or hydraulic cylinder for moving or locking the link mechanisms, and can support the bed main body bottom 110 by deforming it into a curved predetermined shape or by maintaining it in the predetermined shape. Further, instead of the electric actuator, a mechanism that can be locked in a predetermined state may be included.

Further, when the bed main body portion 100 and the wheelchair portion 200 are coupled, a chair bottom 210 described later is supported in an extended state and a predetermined curved shape. Arrow lines M11 and M12 in fig. 1 show examples of the bending directions of the bed main body bottom 110 and the chair bottom 210 when the bed main body 100 and the wheelchair portion 200 are in a coupled state. Accordingly, the bed 10 provides the person to be cared with support of the backrest and the vicinity of the thighs. In the medical and nursing field, the burden on the body of the person to be cared and the nursing staff can be reduced or the comfort and safety of the person to be cared can be improved according to such a function of the bed 10.

As described above, the support member 120 deforms the bed main body bottom member 110 into a predetermined shape, and the bed 10 provides functions of raising the back and raising the knees to support the standing up of the care recipient. In this case, the bed 10 further includes a controller (not shown) for controlling the operation of the actuator. Such a function can also reduce the physical burden on the care-receiver and the care-giver. This actuator will be described later with reference to another illustrative example.

The bed base part 150 supports the entire bed including the bed main body bottom part 110 and the support member 120, and the wheelchair part 200 coupled to the bed main body part 100. The wheelchair securing portion 180 is supported by the bed base portion 150 and secured to restrict the unnecessary movement of the wheelchair portion 200 in the z-axis direction when the bed main body portion 100 and the wheelchair portion 200 are coupled. Is one of the safety mechanisms for preventing the wheelchair portion 200 from being suddenly separated from the bed main body portion 100. The outer shape of the bed base portion 150 as described above is symmetrical with respect to a plane (hereinafter, also referred to as a transverse center plane) parallel to a yz plane passing through the center in the longitudinal direction (direction along the x axis in the figure). In the respective figures, the wheels attached to the bed base portion 150 are disposed at positions asymmetrical with respect to the lateral center plane of the bed base portion 150, but may be disposed symmetrically.

In addition, components such as headboards, foot boards, and side rails (all not shown) may be attached to the bed main body 100 in order to improve convenience and safety of the care recipient. For example, the guard rail may be detachably attached to

guard rail holders

190a and 190b provided in the bed base unit 150 shown in fig. 2. The

guard rail retainers

190a and 190b are part of the guard rail retainers provided in the bed base unit 150, and

guard rail retainers

190c and 190d are further provided on the side surface opposite to the side surface having the

guard rail retainers

190a and 190b (hereinafter, the guard rail retainers 190a to 190d are also collectively referred to as guard rail retainers 190).

Guardrail retainers

190c and 190d are shown in other figures referenced later.

[ 1-3. outline of wheelchair portion ]

Next, an outline of the wheelchair portion 200 will be described.

The wheelchair portion 200 includes a chair bottom part 210 and a wheelchair base part 250.

The chair bottom 210 is a substantially rectangular plate-like member that supports the body of the person to be cared. Here, the meaning of the substantially rectangular shape and the plate shape is the same as the meaning of the shape of the bed main body bottom member 110. In use, the chair bottom 210 may support a person to be cared via a cushioning member (not shown). In the present embodiment, the chair bottom 210 includes five plate-like members (a back bottom member 210a, a waist bottom member 210b, a knee bottom member 210c, a leg bottom member 210d, and a foot bottom member 210e in this order) arranged in the longitudinal direction, similarly to the bed main body bottom 110, and these two adjacent members are connected to each other so as to be rotatable about a common axis, and are configured to be stretchable in the longitudinal direction of the chair bottom 210.

The wheelchair base 250 is a frame structure in which a plurality of beams, shafts, and the like are combined, supports the chair bottom 210, and further includes an electric actuator for moving or locking the link mechanism, a pneumatic cylinder, a hydraulic cylinder, and the like. Accordingly, even in the state of being separated from the bed main body portion 100 shown in fig. 2, the chair bottom 210 can be deformed into a curved predetermined shape or supported while maintaining the predetermined shape. Further, instead of the electric actuator, a mechanism that can be locked in a predetermined state may be included. Arrow lines M21 to M23 in fig. 2 show examples of the bending direction of the chair bottom member 210 based on this stretching in the wheelchair portion 200. The chair bottom member 210 is bent in this manner, and can be changed from an extended shape for supporting the person in bed to a chair shape for providing the person in bed with a backrest, a seat surface, foot supports, and the like that function as a wheelchair. The wheelchair base 250 may support the chair bottom 210 while maintaining the intermediate shape between the extended shape and the chair shape.

The wheelchair portion 200 further includes a controller (not shown) for controlling the operation of the actuator. Accordingly, the caregiver can deform the wheelchair portion 200 from the flat posture to the chair posture without applying force.

The wheelchair base portion 250 includes

wheels

230a and 230b for enabling movement of the wheelchair portion 200. The

wheels

230a and 230b are part of the wheels provided in the wheelchair base 250, and also include

wheels

230c and 230d (hereinafter, the wheels 230a to 230d are also collectively referred to as the wheels 230). The

wheels

230c and 230d are shown in other figures referred to later.

The wheelchair portion 200 further includes an armrest 290L and an armrest 290R (hereinafter, also collectively referred to as the armrests 290) extending in the x-axis direction at positions sandwiching the waist bottom member 210b and the knee bottom member 210c in the z-axis direction in plan view. The armrests 290L and the armrests 290R each have an elongated shape extending in the longitudinal direction at a position on the lateral side of the seat surface of the wheelchair portion 200, i.e., at a position from the waist bottom member 210b to the knee bottom member 210c of the chair bottom member 210 in a plan view in the present embodiment.

The armrest 290 includes an armrest top 290a and an armrest cover 290b, respectively. However, in fig. 2, most of handrail 290L is hidden, and only a small portion of handrail top 290a of handrail 290L is shown.

The armrest 290 is movable up and down (in the direction along the y-axis shown in the figure). Fig. 2 shows a state in which the armrest 290 is at the lowermost position. For example, when the wheelchair portion 200 and the bed main body portion 100 are coupled, for example, the armrest top 290a does not interfere with the height of the bed main body bottom 110 and the chair bottom 210 that are arranged in the longitudinal direction to form the bed surface. When the wheelchair portion 200 and the bed main body portion 100 are separated from each other, the armrest 290 moves upward as indicated by an arrow line M24U from this position, and is lifted and fixed so that the top surface of the armrest top 290a is positioned at a predetermined height, for example, a height near the elbow of the care recipient sitting on the wheelchair portion 200. The armrest 290 will be described later.

The outer shape of the wheelchair portion 200 is substantially symmetrical with respect to a plane parallel to the xy-plane passing through the center in the z-axis direction.

[ 1-4. outline of the coupling state of the bed main body portion and the wheelchair portion ]

When the wheelchair portion 200 and the bed main body portion 100 are coupled to each other, as shown in fig. 1, one side of the bed main body bottom 110 in the longitudinal direction and one side of the chair bottom 210 in the longitudinal direction are substantially parallel to each other and face each other. At this time, the bed main body 100 and the wheelchair portion 200 constitute a bed surface in the same plane, and more specifically, the top surface of the bed main body bottom 110 and the top surface of the chair bottom 210 form a bed surface in the same plane. The back bottom member 110a is juxtaposed with the back bottom member 210a, the waist bottom member 110b is juxtaposed with the waist bottom member 210b, the knee bottom member 110c is juxtaposed with the knee bottom member 210c, the leg bottom member 110d is juxtaposed with the leg bottom member 210d, and the foot bottom member 110e is juxtaposed with the foot bottom member 210 e.

Here, in the bed 10 separated from the coupled state shown in fig. 1 to the separated state shown in fig. 2, the chair bottom 210 is positioned on the right side of the bed main body bottom 110 when viewed from the care recipient lying on the bed surface at an appropriate position. Therefore, in order to transfer the care recipient to the wheelchair portion 200, the caregiver moves the care recipient from the bed-ridden state to the right direction of the care recipient.

Further, the bed 10 according to the present embodiment may be used in a form in which the patient is moved from the bed-ridden state to the left direction of the patient in order to transfer the patient to the wheelchair portion 200, as shown in fig. 3. Fig. 3 is a perspective view of the bed main body 100 and the wheelchair 200 prepared for the combination in the use mode, as viewed from the same direction as fig. 1 and 2.

As can be seen from a comparison between fig. 3 and fig. 2, in the state shown in fig. 3, the entire wheelchair portion 200 is rotated 180 degrees in the horizontal direction (about the y-axis) from the state shown in fig. 2, depending on the orientation of the chair bottom 210 and the difference between the wheels 230 and the armrests 290 seen from the front of the wheelchair base portion 250. On the other hand, in the bed main body part 100, the orientation of the bed base part 150 is not changed, but the bed main body bottom part 110 is rotated 180 degrees in the horizontal direction from the state shown in fig. 2. Therefore, in the bed 10 in which the bed main body 100 and the wheelchair portion 200 are coupled from this state shown in fig. 3, the alignment of the respective parts of the bed main body bottom 110 and the respective parts of the chair bottom 210 is maintained. On the other hand, the left and right positions of the bed main body bottom 110 and the chair bottom 210 are replaced from the state shown in fig. 2. In the bed 10 in this coupled state, the caregiver moves the care-receiver from the bed-lying state to the left direction of the care-receiver, and rides the care-receiver from the bed main body 100 to the wheelchair portion 200.

As described above, the bed main body 100 and the wheelchair portion 200 of the bed 10 are configured to be selectively coupled between a coupled state (hereinafter, also referred to as a first coupled state) in which one side of the bed main body bottom 110 in the longitudinal direction is substantially parallel to and faces one side of the chair bottom 210 in the longitudinal direction, and a coupled state (hereinafter, also referred to as a second coupled state) in which the bed surface is substantially parallel to and faces the other side of the bed main body bottom 110 in the longitudinal direction, and the bed surface is coupled to the other side of the chair bottom 210 in the longitudinal direction. In association with the drawings, it can be said that fig. 2 and 3 show the bed main body 100 and the wheelchair portion 200 prepared so as to be able to be brought into the first coupled state on one hand, and the bed main body 100 and the wheelchair portion 200 prepared so as to be able to be brought into the second coupled state on the other hand.

In addition, the bed 10 of the present embodiment can provide the function of supporting the care recipient such as lifting the back by extending and contracting the bed main body bottom 110 and the chair bottom 210 in either of the first coupling state and the second coupling state. In the following, the structure of the bed main body 100 that can provide these functions even if the left and right positions of the bed main body bottom 110 and the chair bottom 210 are replaced as described above will be described.

[2. detailed Structure of bed body ]

Fig. 4 is an exploded perspective view of the bed main body 100 in the assembled state shown in fig. 2, and fig. 5 is an exploded perspective view of the bed main body 100 in the assembled state shown in fig. 3. Fig. 4 and 5 are views of the bed main body 100 viewed from substantially the same direction as fig. 1 to 3. In association with the respective coupling states described above, it can be said that fig. 4 and 5 show a disassembled state of the bed main body 100 in which the bed main body 100 and the wheelchair portion 200 are assembled so as to be able to be brought into the first coupling state, and show a disassembled state of the bed main body 100 in which the bed main body is assembled so as to be able to be brought into the second coupling state. The arrow lines of the chain lines included in fig. 4 and 5 indicate approximate mounting positions of the components for bringing the bed main body 100 from the disassembled state to the assembled state. The following description of the respective components of the bed main body 100 will be described in detail. Fig. 2 and 3 are also appropriately referred to for the description of the arrangement of the components in the assembled state.

The bed main body 100 includes a center support member 120b in addition to the upper body support member 120a, the knee support member 120c, and the leg support member 120 d. The center support member 120b is also one of the support members 120 supported by the bed base part 150 and supporting the bed body bottom part 110. These support members 120 can be disassembled, and the upper body support member 120a, the center support member 120b, the knee support member 120c, and the leg support member 120d are assembled in order along the longitudinal direction of the bed main body bottom member 110. However, in fig. 4 and 5, the center support member 120b is rotated 180 degrees in the horizontal direction with respect to the bed base 150, and corresponds to the mounting positions of the upper body support member 120a, the knee support member 120c, and the leg support member 120d of the center support member 120 b.

The center support member 120b of the present embodiment is a structure in which a plurality of beams, shafts, and the like are connected, and supports the back bottom member 110a directly or via an upper body support member 120a described later, and supports the knee bottom member 110c and the leg bottom member 110d via a knee support member 120c described later. When the bed main body 100 and the wheelchair portion 200 are coupled, the center support member 120b further supports the back bottom member 210a via the upper body support member 120a, and supports the knee bottom member 210c and the leg bottom member 210d via the knee support member 120 c. As can be seen from a comparison between fig. 4 and 5, the mounting positions of the center support member 120b in the assembled state for the first coupling state and the assembled state for the second coupling state are the same (arrow line a 1).

The center support member 120b includes an actuator 140a (see fig. 4) and an actuator 140b (see fig. 5).

The actuator 140a is connected to, for example, one of the link mechanisms provided in the support member 120, or is movable as a part thereof, so that the bed body bottom member 110 and the chair bottom member 210 are extended and flexed in the respective lengthwise directions via the upper body support member 120 a. For example, bending in the direction shown by arrow line M11 in fig. 1 is part of the act of flexion. That is, the actuator 140a is a mechanism for providing a function of lifting the back portion at one end side in the x-axis direction. Such an actuator 140a of the present embodiment is an example of the first extensor mechanism.

The actuator 140b is connected to another of the link mechanisms provided in the support member 120, for example, or is moved as a part thereof, so that the bed body bottom member 110 and the chair bottom member 210 are extended and flexed in the respective longitudinal directions via the knee support member 120 c. For example, bending in the direction shown by arrow line M12 in fig. 1 is part of the act of flexion. That is, the actuator 140b is a mechanism for achieving a knee-lifting function at one end side in the x-axis direction, which is opposite to the side at which the actuator 140a provides a back-lifting function. Such an actuator 140b of the present embodiment is an example of the second extensor mechanism.

The center support member 120b having such a structure moves symmetrically with respect to the lateral center plane of the bed base portion 150 when the bed main body portion 100 and the wheelchair portion 200 are coupled in the first coupling state and when they are coupled in the second coupling state. Accordingly, in the bed 10, even if the bed main body bottom 110 and the wheelchair portion 200 are rotated 180 degrees in the horizontal direction as shown in fig. 2 and 3, an actuator for providing a function of lifting the back or the like to the care recipient can be provided in an accurate orientation. Further, the operation of switching between the first coupling state and the second coupling state is intended to simplify the operation and reduce the load by changing only the rotation of the center support member 120b including the actuator at the same mounting position, which is relatively complicated and heavy. Such a center support member 120b of the present embodiment is an example of a second support member.

The upper body support member 120a of the present embodiment is an elongated beam, and is attached to one end side (arrow line a2) of the center support member 120b in the x-axis direction in the assembled state of the bed main body portion 100, and supports the back bottom member 110 a. When the bed main body portion 100 and the wheelchair portion 200 are coupled, the upper body support member 120a also supports the back bottom member 210a of the wheelchair portion 200. The upper body support member 120a is supported on the bed base 150 via the center support member 120b, and is also directly supported on the bed base 150 in the vicinity of both ends of the upper body support member 120a itself in the longitudinal direction when the bed main body bottom member 110 is in the extended shape (see fig. 2 and 3).

The position indicated by arrow line a2 is a movable portion of the link mechanism that is moved by the actuator 140a, and the upper body support member 120a moves up and down by the operation of the actuator 140 a. The back-lifting function of the bed 10 is realized by the upper body support member 120a moving up and down while supporting the back bottom member 110a and the back bottom member 210 a. The upper body support member 120a of the present embodiment is an example of the first support member.

The knee support member 120c of the present embodiment is a structure in which two beams arranged in parallel are connected by a hinge. In the assembled state of the bed main body portion 100, with the shaft portion (positive direction of the y-axis) of the hinge set upward, one beam is attached to one end side (arrow line A3) of the center support member 120b in the x-axis direction, which is opposite to the one end side to which the upper body support member 120a is attached, and the other beam is attached to one end side (arrow line a4) of the leg support member 120d, which will be described later, in the x-axis direction. Accordingly, the knee supporting member 120c is positioned below the knee bottom member 110c and the leg bottom member 110d to support them, and the shaft portion of the hinge is positioned below the connection portion of the knee bottom member 110c and the leg bottom member 110 d. When the bed body 100 and the wheelchair portion 200 are coupled, the knee support member 120c also supports the knee bottom 210c and the leg bottom 210d of the wheelchair portion 200, and the shaft portion of the hinge is also located below the connection portion between the knee bottom 210c and the leg bottom 210 d. The knee support member 120c is indirectly supported by the bed base portion 150 via the center support member 120b and the leg support member 120 d.

The position shown by an arrow line a3 is a movable portion of the link mechanism that is moved by the actuator 140b, and the hinge of the knee support member 120c is opened and closed by the operation of the actuator 140b and the sliding movement in the x-axis direction on the bed base portion 150 of the leg support member 120 d. The knee-lifting function of the bed 10 is realized by closing the hinge of the knee supporting part 120c and lifting the shaft portion of the hinge, the connecting portion of the knee bottom part 110c and the leg bottom part 110d, and the connecting portion of the knee bottom part 210c and the leg bottom part 210 d. The knee support member 120c of the present embodiment is an example of a part of the third support member.

The leg support member 120d of the present embodiment is a structure in which a plurality of beams are connected to form a substantially rectangular shape. In the assembled state of the bed main body portion 100, the leg bottom 110d and the foot bottom 110e are supported by the bed base portion 150 (see fig. 2 and 3) below (arrow line a5) and support the leg bottom 110d and the foot bottom 110 e. The leg support member 120d of the present embodiment is an example of another part of the third support member.

The positions of the upper body support member 120a (first support member), the knee support member 120c, and the leg support member 120d (third support member) having such a configuration are symmetrically moved with respect to the lateral center plane of the bed base portion 150 when the bed main body portion 100 and the wheelchair portion 200 are coupled in the first coupled state and when the bed main body portion and the wheelchair portion 200 are coupled in the second coupled state.

The bed main body bottom member 110 is placed on the support member 120 in a direction of moving symmetrically with respect to the lateral center plane of the bed base unit 150 after the positional relationship between the support member 120 and the bed base unit 150 is changed as described above (arrow line a 6). The wheelchair portion 200 moves symmetrically with respect to the center plane of the bed base portion 150 in the lateral direction, moves in parallel in the z-axis direction, and is coupled to the bed main body portion 100.

In this way, the left and right positions of the bed main body bottom 110 and the chair bottom 210 are changed, and the positional relationship between the bed main body bottom 110 and the support member 120 is symmetrical with respect to the center plane of the bed main body bottom 110 in the x-axis direction before and after the change. In which coupling state before and after the replacement, the movement of the link mechanism based on the operations of the support member 120 and the actuator 140 is similarly transmitted to the chair bottom member 210 through the upper body support member 120a and the knee support member 120 c. That is, the function of lifting the back portion and the like is provided to the person to be cared, regardless of the left-right positional relationship of the bed main body portion 100 and the wheelchair portion 200. Further, regarding the work for switching between the first coupling state and the second coupling state, the target of replacement of the position with respect to the bed base portion 150 is the comparatively light first support member and the third support member which do not include the actuator, thereby attempting to reduce the load.

[3. Effect ]

The bed 10 of the present embodiment includes: a bed body 100 having a substantially rectangular plate-like shape and including a bed body bottom 110 that is stretchable in the longitudinal direction and a bed base portion 150 that supports the bed body bottom 110; and a wheelchair portion 200 having a substantially rectangular plate-like shape and including a chair bottom 210 that is stretchable in a longitudinal direction, wherein the bed body portion 100 and the wheelchair portion 200 are configured to be selectively coupled between a first coupled state in which one side of the bed body bottom 110 in the longitudinal direction and one side of the chair bottom 210 in the longitudinal direction are substantially parallel and opposed to each other to form a bed surface on the same plane, and a second coupled state in which the other side of the bed body 110 in the longitudinal direction and the other side of the chair bottom 210 in the longitudinal direction are substantially parallel and opposed to each other to form a bed surface on the same plane.

Accordingly, for example, a manufacturer or supplier of the bed 10 can selectively replace the right and left positions of the bed main body portion 100 and the wheelchair portion 200 with respect to the bed 10 having the same component. Further, even when the user is moving home, the movement destination of the user is not restricted by the direction in which the wheelchair can be separated with respect to the bed 10. Further, the arrangement of the bed 10 at the destination of movement is not limited by the direction in which the wheelchair can be separated, or the bed 10 does not need to be purchased again.

Specifically, for example, the bed main body portion 100 further includes a first support member 120a, a second support member 120b, and

third support members

120c and 120d which are supported by the bed base portion 150, support the bed main body bottom 110, and are arranged in order along the longitudinal direction of the bed main body bottom 110, the second support member 120b includes a first extending/retracting mechanism 140a which extends/retracts the bed main body bottom 110 along the longitudinal direction of the bed main body bottom 110 via the first support member 120a in a first coupling state, and extends/retracts the bed main body bottom 110 along the longitudinal direction of the bed main body bottom 110 via the

third support members

120c and 120d in a second coupling state, and when the bed main body portion 100 and the wheelchair portion 200 are coupled in the first coupling state and coupled in the second coupling state, the second support member 120b, the bed main body bottom 110, and the wheelchair portion 200, symmetrically with respect to the lateral center plane of the bed base portion 150.

Accordingly, for example, when the bed 10 in which the bed main body portion 100 and the wheelchair portion 200 are combined has a function of raising the back portion, the orientation of the first extensor/flexor mechanism 140a for raising the back portion function can be easily changed when the left and right positions of the bed main body portion 100 and the wheelchair portion 200 are replaced.

Alternatively, the bed main body portion 100 may further include a first support member 120a, a second support member 120b, and

third support members

120c and 120d which are supported by the bed base portion 150, support the bed main body bottom 100, and are arranged in order along the longitudinal direction of the bed main body bottom 100, the second support member 120b may include a first extending/flexing mechanism 140a which extends/flexes the bed main body bottom 110 along the longitudinal direction of the bed main body bottom 110 via the first support member 120a, and a second extending/flexing mechanism 140b which extends/flexes the bed main body bottom 110 along the longitudinal direction of the bed main body bottom 110 via the

third support members

120c and 120d, and when the bed main body portion 100 and the wheelchair portion 200 are coupled in the first coupling state and coupled in the second coupling state, the second support member 120b, the first support member 120a, the

third support members

120c and 120d, and, And a wheelchair portion 200 that moves symmetrically with respect to the lateral center plane of the bed base portion 150.

Accordingly, for example, when the bed 10 has a back raising function and a knee raising function, the orientations of the first extensor/flexor mechanism 140a for raising the back function and the second extensor/flexor mechanism 140b for raising the knee function can be easily changed when the left and right positions of the bed main body portion 100 and the wheelchair portion 200 are replaced.

(example 2)

[1. summary ]

The structure capable of replacing the right and left positions of the bed main body portion and the wheelchair portion is not limited to the above-described structure. The bed 1010 of the present embodiment includes a bed main body portion that includes a base portion having a different configuration from that of embodiment 1 and is capable of replacing the right and left positions of the wheelchair portion.

Fig. 6 is a perspective view showing the overall appearance of the bed 1010 of the present embodiment. The appearance and operation of the bed 1010 shown by the arrowed lines M11 and M12 are common to the appearance and operation of the bed 10 shown in fig. 1. Further, the wheelchair portion, the bed main body bottom, and the support member provided in the bed 1010 are also common to the wheelchair portion 200, the bed main body bottom 110, and the support member 120 of embodiment 1, and therefore, the description and the drawings thereof are replaced with those of embodiment 1 and fig. 2 to 5, and the appearance of the bed main body portion provided in the bed 1010 in an assembled state is basically the same as that of the bed main body portion 100 of embodiment 1, and the detailed configuration of the bed base portion is different from that of the bed base portion 150. The structure of the bed base section 1150 of the bed 1010 will be described below.

[2. Structure of bed base portion ]

Fig. 7A and 7B are plan views of a bed base section 1150 according to embodiment 2.

The components of the bed base section 1150 shown in fig. 7A and 7B are basically the same as those of embodiment 1. Here, the components that are not described with reference to fig. 1 to 5 will be described. In the bed base unit 1150 shown in fig. 7A and 7B, it is assumed that the direction in which the legs are directed to the positive x-axis and the direction in which the head is directed to the negative x-axis when viewed from the center are appropriate positions of the body of the person to be cared.

A dotted rectangular area a11 shown in fig. 7A and 7B indicates the position of the center support member 120B in the bed base section 1150, that is, the mounting position of the center support member 120B (hereinafter, referred to as the mounting position a11 of the center support member 120B). In the present embodiment, unlike embodiment 1, there is no bracket-like member that supports the center support member 120b, and the center support member 120b is supported by the bed base unit 1150 in a different form from embodiment 1. For example, the center support member 120b includes a hook (not shown), and is attached to be hung on a beam constituting the bed base section 1150, and supported by the bed base section 1150.

The dashed-dotted rectangular area a21 is a position where the wheelchair base portion 250 of the wheelchair portion 200 that enters in the traveling direction indicated by the arrow line T2 and is in the coupled state with the bed main body portion 100 is fixed (hereinafter, simply referred to as the fixing position a21 of the wheelchair portion 200).

The bed base beam 170 is a beam-like member extending in the longitudinal direction (direction along the x-axis shown in the figure) of the bed base section 1150, has rigidity for supporting a large load added to the bed 1010 and the care recipient, and connects the head side and the foot side of the bed base section 150. Therefore, in the present embodiment, the bed base beam 170 is located in the mounting position a11 in a plan view so as not to interfere with the wheelchair portion 200.

The wheelchair stopper 175 is a member fixed to the bed base beam 170 and extending from the attachment position a11 of the center support member 120b to the fixing position a21 of the wheelchair portion 200 in a plan view. At the start of the separation from the bed main body 100, the wheelchair portion 200 is in a state in which the armrests 290 are lowered (see fig. 6). In this state, when the wheelchair portion 200 on which the care recipient sits is moved, the care recipient may fall down. In order to reduce this risk, when the wheelchair portion 200 is moved in the direction of separating from the bed main body portion 100 (the direction of arrow line T1) in the state where the armrest 290 is lowered, the lower end portion of the armrest 290 (the armrest 290L in this example) hits against the recess of the U-shaped portion (the portion located in the fixed position a21) of the wheelchair stopper 175, and the movement of the wheelchair portion 200 is restricted and cannot be separated. This restriction is released when the armrest 290 is lifted to such an extent that the lower end portion does not contact the wheelchair brake 175. The wheelchair portion 200 can be moved and separated in a safe state in which the armrest 290 prevents the caregiver from falling down.

In fig. 2 to 5, only one wheelchair securing portion 180 is visible, but as shown in fig. 7A and 7B, the wheelchair securing portions 180 are disposed at both ends of the wheelchair portion 200 in the x-axis direction at the securing position a 21.

Between the bed base portion 1150 shown in fig. 7A and the bed base portion 1150 shown in fig. 7B, the wheelchair securing portion 180 and the bed base beam 170 are located at symmetrical positions with respect to a plane (a broken line in fig. 7A and 7B, hereinafter also referred to as a longitudinal center plane) parallel to the xy plane passing through the center of the bed base portion 1150 in the short direction (direction along the illustrated z axis). Accordingly, the mounting position a11 of the center support member 120b and the fixing position a21 of the wheelchair portion 200 can be replaced in the bed base portion 1150. The wheelchair securing portion 180 and the bed base beam 170 are detachably secured to the bed base portion 1150 by screws or the like, for example.

That is, according to this structure, the fixing position of the wheelchair portion 200 is moved symmetrically with respect to the longitudinal center plane of the bed base portion 1150. The center support member 120b (second support member) can be attached to a position that is shifted symmetrically with respect to the longitudinal center plane of the bed base section 1150, and can be supported by the bed base section 1150. Accordingly, the bed main body portion 100 and the wheelchair portion 200 can be selectively coupled between the first coupling state and the second coupling state. In addition, as for the movement of the wheelchair portion 200 in the first coupling state and the second coupling state, in comparison with embodiment 1, the movement is symmetrical with respect to the lateral center plane of the bed base portion 150 in embodiment 1, but is symmetrical with respect to the longitudinal center plane of the bed base portion 1150 in this embodiment.

The wheelchair securing portion 180 moves symmetrically with respect to the longitudinal center plane of the bed base portion 1150 when the bed main body portion 100 and the wheelchair portion 200 are coupled in the first coupling state and when they are coupled in the second coupling state. Accordingly, even in any one of the first coupled state and the second coupled state of the bed main body portion 100 and the wheelchair portion 200, the wheelchair portion 200 can be prevented from being suddenly separated.

The position and the extending direction of the wheelchair stopper 175 are also changed in accordance with the movement of the bed base beam 170. Accordingly, even when the bed main body portion 100 and the wheelchair portion 200 are separated from each other in any of the coupled states, the wheelchair brake 175 can exhibit the above-described function.

The above-described change of the positions of the wheelchair securing portion 180 and the bed base beam 170 is realized by, for example, the following configuration. The bed base beam 170 and the wheelchair securing portion 180 are secured to the bed base portion 1150 by screws. In this case, screw holes for fixing these components are provided in the bed base section 1150 at positions that are symmetrical with respect to the longitudinal center plane of the bed base section 1150. Accordingly, any one of the bed base member 170 and the wheelchair securing portion 180 that are arranged symmetrically with respect to the longitudinal center plane of the bed base portion 1150 can be secured.

Further, the structure is not limited to the structure in which the wheelchair securing portion 180 and the bed base beam 170 are secured to the bed base portion 1150 with screws. For example, the wheelchair securing part 180 and the bed base beam 170 may be provided with brackets, and these brackets may be hung on a beam of the bed base part 1150, and the anti-slip pins may be inserted.

Then, the support members 120 other than the center support member 120b are moved in accordance with the position of the center support member 120 b. For example, in the case of fig. 7A, the upper body support member 120a, the knee support member 120c, and the leg support member 120d are combined in the same manner as in fig. 4. In the case of fig. 7B, the upper body support member 120a, the knee support member 120c, and the leg support member 120d are combined in the same manner as fig. 5. Further, the knee support member 120c is moved symmetrically with respect to the longitudinal center plane of the bed base part 1150 (see fig. 2 to 5), because the hinge of the knee support member 120c is separated from the edge of the bed, and the fingers of the caregiver and the care giver who enter from the periphery of the bed to the lower side of the bed main body bottom part 110 are hardly caught by the hinge.

As described above, the bed 1010 of the present embodiment is configured such that the right and left positions of the bed main body 100 and the wheelchair portion 200 before delivery can be replaced, as in the bed 10 of embodiment 1. Further, the bed 1010 of the present embodiment can be used to change the direction of riding without changing the position of the care recipient (the position of the head and the feet) or to change the path for the wheelchair portion 200 coupled to the bed main body portion 100 even in a place where there is no area for rotating the bed 1010, for example, after the start of use.

The bed base beam 170, the wheelchair brake 175, and the wheelchair securing portion 180 described above as the components that move symmetrically with respect to the longitudinal center plane of the bed base portion 1150 are illustrated by way of example, and the bed base portion 1150 need not include all of these components. Further, it is conceivable that, for example, the bed base beams 170 and the wheelchair brake 175 are originally symmetrical with respect to the longitudinal center plane of the bed base 1150. Such a component is not included in the moving object. The bed base section 1150 may further include components that move symmetrically other than the above.

[3. effects, etc. ]

In the bed 1010 of the present embodiment, the bed main body portion 100 includes the first support member 120a, the second support member 120b, and the

third support members

120c and 120d which are supported by the bed base portion 1150, support the bed main body bottom 110, and are arranged in order along the longitudinal direction of the bed main body bottom 110, and when the bed main body portion 100 and the wheelchair portion 200 are combined in the first combined state and combined in the second combined state, the second support member 120b and the wheelchair portion 200 move symmetrically with respect to the longitudinal center plane of the bed base portion 1150.

Accordingly, similarly to the bed 10 of embodiment 1, the right and left positions of the bed main body 100 and the wheelchair portion 200 can be selectively replaced with respect to the bed 1010 having the same component.

The bed main body 100 may further include a wheelchair securing portion 180 that is supported by the bed base 1150 and secures the wheelchair portion 200 in the first coupled state and the second coupled state, and the wheelchair securing portion 180 may move symmetrically with respect to the longitudinal center plane of the bed base 1150 when the bed main body 100 and the wheelchair portion 200 are coupled in the first coupled state and the second coupled state.

Accordingly, the bed 1010 can function as a safety mechanism that can prevent the wheelchair portion 200 from suddenly separating from the bed main body portion 100 even if the left and right positions of the bed main body portion and the wheelchair portion are changed.

(others)

[1. Armrest ]

As described above, in the wheelchair portion 200, the armrest 290 includes the armrest top 290a and the armrest cover 290 b. When the wheelchair portion 200 is separated from the bed main body portion 100, the armrests 290 are lifted to a predetermined height and used. Fig. 8A is a perspective view of the wheelchair portion 200 with the armrest 290 raised to a predetermined height, and fig. 8B is a front view of the wheelchair portion 200 with the armrest 290 raised to a predetermined height. When the wheelchair portion 200 and the bed main body portion 100 are coupled, the armrests 290 move downward in the direction indicated by the arrow line M24D from the positions shown in fig. 8A and 8B to a predetermined height, for example, a height that does not interfere with the bed main body bottom 110 and the chair bottom 210 that are arranged in the longitudinal direction to form the bed surface. Arrow lines M21 to M23 show examples of directions of bending of the chair bottom member 210 similar to fig. 2 and 3.

The armrest top 290a is held by a person to be cared standing from the wheelchair portion 200 or sitting on the wheelchair portion 200 to support the body, or prevents the person to be cared sitting on the wheelchair portion 200 from falling to the side (z-axis direction in the drawing) of the wheelchair portion 200.

The armrest cover 290b has an outer side surface and an inner side surface extending in the longitudinal direction of the chair bottom 210. As shown in fig. 8A and 8B, when the armrest 290 is in the position in use, a wall is formed that sandwiches the seat surfaces (the waist member 210B and the knee member 210c) in the z-axis direction on the lower surface of the armrest top 290 a. This prevents a carried article such as a towel of the care recipient and a part of the body of the care recipient, for example, a knee and an upper leg from passing below the armrest top 290a from the seating surface of the wheelchair portion 200. For example, if the legs extending beyond the outer side surface of the armrest 290 collide with an obstacle located in the path of the wheelchair portion 200, the care-target person or the surrounding person may be injured. However, depending on the person to be cared, the person may not be able to move freely and may suddenly move left and right. The armrest cover 290b functions as a safety mechanism for restricting such leg movements.

[2. side line ]

Further, when the bed main body portion 100 and the wheelchair portion 200 are in the first coupled state or the second coupled state, a line extending linearly in the longitudinal direction of the bed main body portion may be formed by the outer side surface of the guard rail holder of the bed main body portion 100 and the outer side surface of the armrest cover 290 b. This line is also shown in the coupled state of the bed main body portion 100 and the wheelchair portion 200 shown in fig. 1, but the meaning of the straight line is further explained by the example shown in fig. 9.

Fig. 9 is a front view of the bed 10 in which the bed main body portion 100 and the wheelchair portion 200 are coupled. The guard rail holder 190 has an outer surface extending in the longitudinal direction of the bed main body 100. In this figure, a state in which the line L1 on the outer side surface of the guard rail holder 190a, the line L2 on the outer side surface of the armrest cover 290b, and the line L3 on the outer side surface of the guard rail holder 190b are positioned on a virtual straight line along two arrow lines in the x-axis direction shown below the line is an example of the above-described "one straight line is formed". More specifically, lines L1 to L3 shown in the figure are recessed portions (grooves) provided on the outer side surfaces of the guardrail holder 190 and the armrest cover 290b and extending along the same straight line.

With such a line, the caregiver can easily visually confirm whether, for example, the armrest 290 is stored at an appropriate position (height) and whether the bed main body portion 100 and the wheelchair portion 200 are appropriately coupled.

Also, the lines L1 to L3 are shown as grooves in fig. 9, but the lines L1 to L3 are not limited thereto. The lines L1 to L3 may be, for example, convex portions extending along the same straight line, lines of colors that can be easily viewed, or concave portions or a combination of convex portions and colors. Further, the line of the entire bed 10 in the longitudinal direction shown in fig. 9 may not be provided. For example, as described with reference to fig. 9, recesses may be present only in the vicinity of the right half of L1 and the left end of L2, and in the vicinity of the left half of L3 and the right end of L2, and these recesses may be aligned when the bed main body 100 and the wheelchair portion 200 are appropriately coupled. The appearance of the left and right lines of the bed 10 may be different. Accordingly, when the bed main body portion to which the wheelchair can be coupled is located in a plurality of places such as a home and a care facility of the patient or a ward, an examination room, and a treatment room, the left-right positional relationship between the wheelchair and the bed main body portion can be easily grasped. Such a single straight line may be provided on the top surface of the handrail top 290a and the top surface of the guard rail holder 190. Accordingly, the care recipient and the caregiver can easily confirm whether or not the bed main body portion 100 and the wheelchair portion 200 are properly coupled when viewed from above.

The present invention also includes an embodiment obtained by implementing various modifications of the embodiments, and an embodiment realized by arbitrarily combining or not providing some of the components and functions of the embodiments without departing from the scope of the present invention.

For example, the bed 10 may not have a knee-lifting function. That is, the function provided by the extension and flexion of the bed body bottom part 110 and the chair bottom part 210 may be only the lifting of the back.

In this case, the support member 120 may not include the link mechanism for raising the knee and the actuator 140b (second extensor/flexor mechanism). Among the support members 120, the upper body support member 120a (first support member), the knee support member 120c, and the leg support member 120d (third support member) may be configured to be plane-symmetrical with respect to the lateral center of the bed main body 100 in the assembled state of the bed main body 100. For example, both the first support member and the third support member are configured to have no mobility such as a beam instead of the hinge of the knee support member 120c in the third support member. Further, as in embodiment 1, the center support member 120b (second support member) is supported by the bed base portion 150 in the first coupling state and the second coupling state in such a direction as to move symmetrically with respect to the lateral center plane of the bed base portion 150. On the other hand, the first extending/retracting mechanism of the center support member 120b extends/retracts the bed main body bottom member 110 for lifting the back via the first support member in the first coupling state, and extends/retracts the bed main body bottom member 110 for lifting the back via the third support member in the second coupling state. That is, unlike embodiment 1, in this case, the positional relationship of the bed base portions 150 of the first and third support members is not replaced.

In this case, the bed main body bottom member 110 may be constituted by a member corresponding to the back bottom member 110a which is lifted up to lift the back, for example, and two other members. In this case, the bed main body bottom member 110 is supported by the support member 120 in a direction of moving symmetrically with respect to the lateral center plane of the bed base portion 150, as in embodiment 1. Alternatively, the bed main body bottom member 110 may be formed of three members, i.e., a member having both longitudinal ends corresponding to the back bottom member 110a and a member connecting these two members. In this case, the bed main body bottom member 110 may be supported by the support member 120 in the first coupling state and the second coupling state in a direction of moving symmetrically with respect to the lateral center plane of the bed base unit 150 in positional relation to the bed base unit 150, but does not need to be rotated. Also, as in embodiment 1, a bed main body bottom part 110 including five parts may be used.

When the bed main body portion 100 or the wheelchair portion 200 includes other components than those described above, the components may be changed in position on the bed base portion 150 or the wheelchair base portion 250 in the first coupling state and the second coupling state of the bed main body portion 100 and the wheelchair portion 200 as necessary. For example, a mechanism including actuators for moving the entire bed 10 up and down, a controller for controlling the actuators, wiring thereof, cables for supplying power to the actuators and charging the battery, and the like are appropriately disposed at a position where the movement of the movable components is not obstructed in each coupled state, or at a position where the use by a caregiver or a caregiver is easy.

[3. Effect ]

As described above, in the bed 10 and the bed 1010 according to the respective embodiments, the wheelchair portion 200 includes the armrest cover 290b having the outer side surface extending in the longitudinal direction of the chair bottom 210.

Accordingly, the articles carried by the care recipient and a part of the body can be prevented from slipping out of and down from the seating surface of the chair section 200. This can avoid interference with obstacles on the path of the wheelchair portion 200.

The bed main body 110 may further include a guard rail holder 190 having an outer surface extending in the longitudinal direction of the bed main body, and when the bed main body 100 and the wheelchair portion 200 are in the first coupled state or the second coupled state, a single straight line may be formed by the outer surface of the guard rail holder 190 and the outer surface of the armrest cover 290b and extend in the longitudinal direction of the bed main body 100.

Accordingly, it is possible to easily visually confirm whether or not the armrest 290 is stored at an appropriate position (height), and whether or not the bed main body portion 100 and the wheelchair portion 200 are appropriately coupled.

Description of the symbols

10. 1010 bed

100 bed body

110 bed main body bottom piece

110a, 210a background element

110b, 210b waist piece

110c, 210c Knee bottom Member

110d, 210d leg base member

110e, 210e footing piece

120 support member

120a Upper body support Member (first support Member)

120b center support member (second support member)

120c Knee support Member (third support Member)

120d leg support Member (third support Member)

140a actuator (first extending/bending mechanism)

140b actuator (second extending/bending mechanism)

150. 1150 bed base part

170 bed base beam

175 wheelchair brake

180 wheelchair fixed part

190. 190a, 190b, 190c, 190d guardrail retainers

200 wheelchair part

210 chair bottom part

230. 230a, 230b, 230c, 230d wheel

250 wheelchair base

290. 290L, 290R armrest

290a handrail top

290b armrest cover

Claims

1. A bed having:

The bed main body has a substantially rectangular plate-like shape, and includes a bed main body bottom member that is extendable and bendable in the longitudinal direction, and a bed base portion that supports the bed main body bottom portion. pieces; and

The wheelchair portion has a substantially rectangular plate-like shape, and includes a chair bottom member that can extend and bend in the longitudinal direction,

The bed main body portion and the wheelchair portion are selectively coupled between a first coupled state and a second coupled state by not changing the orientation of the bed base portion. Then, after the bed main body bottom member is rotated 180 degrees in the horizontal direction, and the wheelchair part is rotated 180 degrees in the horizontal direction, the bed main body part and the wheelchair part are combined, so that the bed main body bottom part is One side along the longitudinal direction of the member and one side along the longitudinal direction of the chair bottom member are substantially parallel and opposite to form a state in which the bed surface is on the same side, and the second combined state is that the bottom member of the bed body is The other side along the longitudinal direction of the chair bottom member is substantially parallel and opposite to the other side along the longitudinal direction of the chair bottom member, thereby forming the state of the bed surface on the same side.

2. The bed of claim 1,

The bed body part further includes a first support member, a second support member, and a third support member arranged in order along the longitudinal direction of the bed body bottom member, the first support member, the second support member member, and the third support member is supported by the bed base portion and supports the bed main body bottom member,

The second support member includes a first extension/flexion mechanism that causes the bed body bottom member to follow the bed body bottom portion via the first support member in the first coupled state. extending and flexing in the longitudinal direction of the member, and in the second combined state, the bed main body bottom member is stretched and flexed along the longitudinal direction of the bed main body bottom member via the third supporting member,

When the bed main body part and the wheelchair part are combined in the first combined state, the second support member, the bed main body bottom part, and all the The wheelchair portion is in a symmetrical state with respect to the lateral center plane of the bed base portion.

3. The bed of claim 1,

The second support member includes a first extension/flexion mechanism and a second extension/flexion mechanism, and the first extension/flexion mechanism causes the bed body bottom member to follow the width of the bed body bottom member via the first support member. extending and flexing in the longitudinal direction, the second stretching and flexing mechanism extends and flexes the bed main body bottom member along the longitudinal direction of the bed main body bottom member via the third support member,

When the bed body part and the wheelchair part are combined in the first combined state, the second support member, the first support member, the The third support member and the wheelchair portion are in a symmetrical state with respect to the lateral center plane of the bed base portion.

4. The bed of claim 1,

When the bed main body part and the wheelchair part are combined in the first combined state, the second support member and the wheelchair part are relatively more than when combined in the second combined state. The longitudinal center plane of the bed base portion is in a symmetrical state.

5. The bed of claim 4,

The bed body portion further includes a wheelchair fixing portion, which is supported by the bed base portion and fixes the wheelchair portion when in the first combined state and when in the second combined state,

When the bed main body portion and the wheelchair portion are coupled in the first coupled state, the wheelchair fixing portion is relative to the longitudinal direction of the bed base portion compared to when the bed body portion and the wheelchair portion are coupled in the second coupled state. The center plane is symmetrical.

6. The bed of any one of claims 1 to 5,

The wheelchair portion includes an armrest cover having an outer side surface extending in the longitudinal direction of the chair bottom member.

7. The bed of claim 6,

The bed body portion further includes a guardrail holder having an outer side surface extending along the longitudinal direction of the bed body portion,

When the bed main body part and the wheelchair part are in the first combined state or the second combined state, they are formed by the outer surface of the guardrail holder and the outer surface of the armrest cover, along the Lines arranged in a straight line extending in the longitudinal direction of the bed main body.