JP2012152297A - Standing-up assisting chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a standing-up assisting chair naturally pushing out the buttocks of a user to more safely assist a standing-up motion of the user by sufficiently moving a seat part forward while the seat part rises and being inclined such that a rear part thereof rises.SOLUTION: This standing-up assisting chair includes: a chair body (1) having a fixed seat body (13); and a seat body elevating device (2) having a movable seat body (20). The seat body elevating device (2) includes: a link mechanism (21) moving the movable seat body (20) up and down; an air dumper (22) energizing the link mechanism (21) to rise the movable seat body (20) by a prescribed force; a seat body lock device (3) bringing the movable body (20) into a lock state in a descent position; and a lock release device (4). In the link mechanism (21), downside joints (214) of rear-side turn joint members (212) are positioned above downside joints (213) of front-side turn joint members (211), and the joints (213) are positioned near front legs (11).

Description

  The present invention relates to a standing up auxiliary chair. More specifically, for example, in a chair that assists a user with weak legs, such as an elderly person, when the user stands up from a seated state, the seat moves sufficiently forward and the rear part rises. The present invention relates to a stand-up assisting chair that can naturally push the user's buttocks forward and thereby assist the user's stand-up operation more safely.

If it is difficult for the person to stand and sit on their own, such as a person with a disability to the legs or the elderly, for example, when standing up from a seated chair, assistance or assistance from another person is required. And However, except for specialized facilities such as welfare facilities for the elderly, it is difficult to make people who can perform such assistance or assistance resident in various public facilities.
Therefore, conventionally, in order to make up for the shortage of persons who can perform assistance or assistance as described above, a chair provided with a function capable of assisting the user's standing motion is proposed (see Patent Document 1). ).

  The standing auxiliary chair described in Patent Document 1 is a chair having a backrest <5> at the upper rear part of the legs <2> and <3>, and an armrest <4> on the left and right sides, with the seat portion having a depth. Divide into a short front seat <6> and a rear seat <7> with a longer depth, and connect the lower front end of the rear seat <7> and the rear end of the front seat <6> to the hinge <14> The lower end of the rear seat <7> and the leg side are connected by the front link <8> and the lower rear end of the rear seat <7> and the leg side are connected by the rear link <16>. Link, and the middle part in the front-rear direction of the rear seat <7> and the lower rear part of the leg <3> are connected by a gas spring <19>. When the gas spring <19> is extended, the rear seat < 7> moves substantially in parallel and rises, and the front portion of the front seat <6> hangs forward due to its own weight, thereby assisting the user to stand up.

JP-A-10-179644

However, the standing auxiliary chair described in Patent Document 1 has the following problems.
First, the rear seat <7> is used because the amount of forward movement when it is raised is not enough, and the height on the rear side is low and the angle of inclination to lower the front side is shallow and almost horizontal. It is difficult to naturally move the person's buttocks and push them forward, and it is difficult to sufficiently assist the user's standing up motion.

  The front seat <6> and rear seat <7> are separated but connected by a hinge <14>. The front seat <6> rises as the rear seat <7> rises. It is designed to tilt forward. Also, the front seat <6> is located in front of the rear seat <7>, and when the user stands up, the front seat <6> pushes the back of the user's knees and back of the thigh forward there is a possibility. Considering that the user is assumed to be an elderly person with weak legs and legs, the user may fall down due to the movement of the front seat <6>, and there is a problem in safety.

  The present invention provides a chair that assists a rising motion of a user with weak legs such as an elderly person, and when the user stands up from a seated state, the seat moves sufficiently forward while the rear portion rises. It is an object of the present invention to provide a stand-up assisting chair that can naturally push the user's buttocks forward and thereby assist the user's stand-up operation more safely.

Means taken by the present invention to solve the above problems are as follows.
(1) The present invention
A chair on which a seat is placed on a leg structure,
The seat is divided into a front side and a rear side,
The seat on the front side is fixed to the leg structure, and the seat on the rear side is provided on the leg structure via an elevating mechanism,
The raising / lowering mechanism operates by moving the rear seat upward, tilting forward and moving forward, and moving the rear seat forward to move the front seat. Including being configured to reach a position over the body,
It is a stand-up auxiliary chair.

(2) The present invention
The elevating mechanism is composed of a link mechanism,
An element that raises the seat on the rear side, an element that tilts the seat on the rear side forward, and an element that moves the seat on the rear side forward. Including being configured to operate the seat;
It is the stand-up auxiliary chair of (1).

(3) The present invention
The elevating mechanism includes guide means, and the guide means
An element that raises the seat on the rear side, an element that tilts the seat on the rear side forward, and an element that moves the seat on the rear side forward. Including being configured to operate the seat;
It is the stand-up auxiliary chair of (1).

(4) The present invention
A chair body having a fixed seat on the front side;
A seat lifting apparatus having a movable seat that constitutes a seat together with the fixed seat;
With
The seat lifting device is:
A link mechanism for moving the movable seat up and down;
Urging means for urging the link mechanism or the movable seat, and raising the movable seat from a lowered position with a required force;
A seat locking device that locks the movable seat or the link mechanism at a lowered position of the movable seat;
Unlocking means for releasing the lock state of the movable seat body by the seat body locking device;
With
The link mechanism is
Joints of the link mechanism are provided at two places before and after the movable seat body,
The lower joint of the joint member constituting the joint on the rear side of the movable seat body is positioned above the lower joint of the joint member constituting the joint on the front side of the movable seat body, and the movable seat body The joint on the lower side of the joint member constituting the joint on the front side of the chair is positioned in the vicinity of the front leg of the chair body,
The movable seat is configured to come to a position covering the fixed seat by moving forward.
It is a stand-up auxiliary chair.

(5) The present invention
A chair body having a fixed seat on the front side;
A seat lifting device;
With
The seat lifting device is:
A movable seat having a front support member and a rear support member, which constitute a seat portion together with the fixed seat body of the chair body, and is directed downward on the lower side;
A guide member for guiding the up and down movement of the front support member and the rear support member of the movable seat;
Biasing means for raising the movable seat body from the lowered position with a required force;
A seat locking device that locks the movable seat in the lowered position;
Unlocking means for releasing the lock state of the movable seat body by the seat body locking device;
With
The guide member is
A front guideway for guiding the front support member;
A rear guide path for guiding the rear support member;
With
The height difference between the start point and the end point of the rear guide path is formed to be higher than the height difference between the start point and the end point of the front guide path, and the end point of the front guide path is near the front leg of the chair body. Is located,
The movable seat is configured to come to a position covering the fixed seat by moving forward.
It is a stand-up auxiliary chair.

(6) The present invention
Urging force adjusting means for adjusting the urging force by the urging means is provided,
(4) or (5) is a stand-up auxiliary chair.

(7) The present invention
The unlocking means has a user operation unit that releases the lock state of the movable seat body by two operations, and an assistant operation unit that releases the lock state of the movable seat body by one operation. ,
(4), (5) or (6) is a stand-up auxiliary chair.

(Function)
The operation of the standing assistance chair according to the present invention will be described. Here, the constituent elements used in the description are assigned in correspondence with the reference numerals given to the respective parts in the embodiments described later. These reference numerals are the same as the reference numerals described in the claims of the claims. Similarly, it is only for the purpose of facilitating understanding of the contents, and the meaning of each component is not limited to the above-described parts.

  In the stand-up auxiliary chair, the seat (13) on the front side is fixed to the leg structure (10, 11, 12), and the seat (20, 50) on the rear side rises to raise the user. When assisting, unlike a conventional chair, the movable seat comes to a position that covers the fixed seat by moving forward. As a result, there is no risk of pushing the back of the user's knee and the back of the thigh forward more than necessary, and the fall of the user due to the back of the knee and the back of the thigh being pushed against the user's will. Can be prevented.

  In the stand-up auxiliary chair of the invention of (4), first, the movable seat (20) is locked to the lowered position by the seat lock device (3). When the movable seat body (20) is locked at the lowered position, the seat surface of the movable seat body (20) becomes the same height as the seat surface of the fixed seat body (13) to constitute the seat portion. In this state, the user can sit on the seat.

  When the user stands up from the seated state, the user himself or his / her assistant operates the lock release means (4) to release the locked state of the movable seat (20). When the movable seat (20) is released from the locked state, the movable seat (20) is pushed up by the biasing means (22), pushes up the user's buttocks and pushes it forward, and the user rises. Can assist.

  At this time, the link mechanism (21, 21a) for moving the movable seat (20) up and down is the lower joint (214) of the joint member (212) constituting the rear joint (216) of the movable seat (20). ) Is positioned above the lower joint (213) of the joint member (211) constituting the joint (215) on the front side of the movable seat (20) and on the front side of the movable seat (20). The lower joint (213) of the joint member (211) constituting the joint (215) is positioned in the vicinity of the front leg (11) of the chair body (1), so that the movable seat (20) is raised. When moving the movable seat (20) sufficiently forward, the rear side of the movable seat (20) can be raised to push the user's buttocks naturally forward, so the user can easily You can stand up.

  Also, since the fixed seat (13) does not move from the fixed position, the back of the user's knees and thighs are not pushed forward as in the past, and only the movable seat (20) Can be pushed up. Thereby, even if the user is an elderly person whose legs and legs are weak, the fall can be prevented and the safety when the user stands up can be further increased.

  In addition, the stand-up auxiliary chair of the invention of (5), like the stand-up auxiliary chair of the invention of (1), locks the movable seat (50) to the lowered position by the seat lock device (3), When the user sitting on the part stands up, the user himself or his / her assistant operates the unlocking means (4) to release the lock of the movable seat (50). When the movable seat body (50) is released from the locked state, the movable seat body (50) is pushed up by the urging means (54) to push up the user's buttocks and push it forward to raise the user. Can assist.

  At this time, the height difference between the start point (532a) and the end point (532b) of the rear guide path (532) of the guide member (53) that guides the vertical movement of the movable seat (50) is the start point of the front guide path (531) ( 531a) and the end point (531b) are formed to be higher than the height difference, and the end point (531b) of the front guideway (531) is positioned in the vicinity of the front leg (11) of the chair body (1). Therefore, when the movable seat (50) is raised, the movable seat (50) is moved sufficiently forward, and the rear side of the movable seat (50) is raised to naturally raise the user's hip. The user can stand up easily.

  Similarly to the stand-up auxiliary chair (A1) of the invention of (4), the fixed seat (13) does not move from the fixed position, so that the user's knees and thighs can be worn as before. There is no need to push forward, and the buttocks can be pushed up with only the movable seat (50). Thereby, even if the user is an elderly person whose legs and legs are weak, the fall can be prevented and the safety when the user stands up can be further increased.

  The stand-up assisting chair provided with the biasing force adjusting means (23, 24, 25) for adjusting the biasing force by the biasing means (22) can be used for individual elderly people or persons with disabilities who use the stand-up assisting chair. According to the state, the force for pushing up the buttocks by the movable seat (20) can be adjusted, and the safety can be further improved.

  The unlocking means (4) has a user operation part (45, 45a) that releases the locked state of the movable seat (20) by two operations and a lock of the movable seat (20) by one operation. The standing assistance chair having the operation part for the assistant (45b) for releasing the state, when the user has operated the operation part for the user (45, 45a) only at one place, Since the movable seat body (20) cannot be unlocked, the movable seat body (20) does not operate against the user's will and the safety is high. Further, if the user operates the two user operation units (45, 45a) with the intention of standing up, the user can stand up alone with the assistance of the movable seat (20). Furthermore, when the assistant is attached, the user can easily assist the user to stand up by operating the assistant operation section (45b) at one place without the user having to operate the assistant.

  The present invention, for example, in a chair that assists a rising motion of a user who has weak legs such as an elderly person, when the user stands up from a seated state, the seat on the rear side moves sufficiently forward while rising. By tilting forward, the user's buttocks can be naturally pushed forward. In addition, when the front fixed seat is fixed and the rear movable seat rises to assist the user to stand up, unlike the conventional chair, the movable seat moves forward. It comes to the position which covers above a fixed seat by movement of. As a result, there is no risk of pushing the back of the user's knee and the back of the thigh forward more than necessary, and the fall of the user due to the back of the knee and the back of the thigh being pushed against the user's will. It is possible to provide a stand-up assistance chair that can be prevented and can safely assist the user's stand-up operation.

Side view sectional explanatory drawing which shows 1st Embodiment of the stand-up auxiliary chair which concerns on this invention. FIG. 3 is an explanatory perspective view illustrating a state in which a movable seat body of the standing up auxiliary chair illustrated in FIG. FIG. 3 is an explanatory perspective view illustrating a state in which a movable seat body of the auxiliary chair for standing up illustrated in FIG. Partial cross-section explanatory drawing which shows the structure of the unlocking operation part for users of a seat lock device. Side surface sectional explanatory drawing which shows the structure of the lock | rock part of a seat body locking device. The bottom view which shows the structure of the lock part of a seat body locking device. Side surface sectional explanatory drawing which shows 2nd Embodiment of the stand-up auxiliary chair which concerns on this invention.

[Embodiment 1]
The present invention will be described in detail based on the embodiments shown in the drawings.
Please refer to FIG. 1 to FIG.
The stand-up auxiliary chair A <b> 1 includes a chair body 1, a seat body lifting device 2, a seat body locking device 3, and a lock releasing device 4.

  The chair body 1 has a seat frame 10 which is framed in a quadrangular shape. Two front legs 11 and rear legs 12 are formed at the lower four corners of the seat frame 10, respectively. A footrest plate 18, 18a is fixed to the lower end of each front leg 11 facing forward. A fixed seat 13 is fixed to the front upper surface of the seat frame 10 so as to cover approximately half of the seat frame 10. A backrest 14 is formed at the rear end of the seat frame 10 and above each rear leg 12. On both the left and right sides of the seat frame 10, inverted L-shaped armrests 15 and 15 a are formed so as to connect the seat frame 10 and the backrest 14.

  The seat lifting device 2 includes a movable seat 20. The movable seat 20 has a shape that can be accommodated so as to substantially block the rear half of the seat frame 10, and a rising portion 201 having a required height is formed at the rear end thereof. The movable seat 20 may have a structure in which the rising portion 201 is not provided, or may be formed lower than in the present embodiment. The movable seat 20 constitutes a seat (reference number omitted) together with the fixed seat 13 when the seat is at the same height (lowering position) as the seat of the fixed seat 13.

  On the lower surface of the movable seat 20, angle steel members 218, 218 a in the form of angle steel are slightly overhanging and fixed to both sides. The lifting / lowering member 218, 218a constitutes a link mechanism 21, 21a described later. When the movable seat 20 is lowered, the elevating node members 218 and 218a come into contact with the upper and side surfaces of the left and right frame members (reference numerals omitted) of the seat frame 10 so that the movable seat It has a function as a positioning stopper at the lowered position of the body 20. At this time, the seating surface of the movable seat 20 is slightly higher than the upper surface of the seat frame 10.

  The movable seat body 20 can be moved up and down by link mechanisms 21 and 21a arranged on the left and right sides of the seat frame 10 as shown in FIGS. The link mechanisms 21, 21 a are planar link mechanisms in which the movable ranges of nodes (links) and joints (joints) are within the same vertical plane, and are passed from the left and right end surfaces of the seat frame 10 to the outer surfaces of the front legs 11. Fixed plate-like fixed node members 210 and 210a are provided.

  Rotating node members 211 and 212 are pivotally attached to the fixed node members 210 and 210a so as to be rotatable in the vertical direction at two positions on the front and rear sides. The portions where the lower ends of the rotary node members 211 and 212 are pivotally attached become the lower front joint 213 and the lower rear joint 214 of the link mechanism. The lower front joint 213 is positioned in the vicinity of the rear side of each front leg of the chair body 1. This configuration is an element that raises the movable seat 20 and an element that moves it forward.

  The lower rear joint 214 is provided at a slightly higher position than the lower front joint 213, and the rotary joint member 212 constituting the rear lower rear joint 214 is the rotary joint member constituting the front lower front joint 213. The length is approximately the same as 211. This configuration is an element that tilts the movable seat 20 forward. The lengths of the rotary node members 211 and 212 are set such that the seating surface of the movable seat 20 is the same height as the seating surface of the fixed seat 13 when the movable seat 20 is in the lowered position as described above. And it is set to the length which can become mutually parallel (it becomes horizontal at the time of use of stand-up auxiliary chair A1).

  The upper ends of the rotary node members 211 and 212 of the link mechanisms 21 and 21a are rotated in the vertical direction at the two front and rear positions of the elevating node members 218 and 218a of the movable seat body 20, respectively. It is pivoted so that it can. The portions where the upper ends of the rotary joint members 211 and 212 are pivotally attached become the upper front joint 215 and the upper rear joint 216 of the link mechanism. In addition, a connecting member 217 for attaching a base end portion of a cylinder of the air damper 22 as an urging means is installed between the rotary node members 211 on the front side of the link mechanisms 21 and 21a.

  A base end portion of the cylinder of the air damper 22 is pivotally attached to an intermediate portion of the connecting member 217 so as to be rotatable in the vertical direction. The rod end of the air damper 22 is pivotally attached to a transition body 24 that is screwed along the screw rod 23 so as to be rotatable in the vertical direction. The screw rod 23 is provided on the rear upper surface of the H-shaped reinforcing member 16 that connects the front legs 11 and the rear legs 12 of the chair body 1. The screw rod 23 is rotatably supported by the fixture 25 with the axial direction as the front-rear direction, and rotates by turning a knob 230 fixed to the rear end.

  The air damper 22 rotates the screw rod 23 to move the transition body 24 forward and backward along the screw rod 23 so that the vertical angle with respect to the rotating node member 211 changes. When the air damper 22 approaches an angle at which the angle (the angle in the axial direction) becomes a right angle with respect to the rotating node member 211, the resistance is reduced and the force for pushing up the movable seat body 20 becomes stronger.

  The movable seat 20 can be fixed at the same height as the fixed seat 13 by the seat lock device 3 (mainly see FIGS. 5 and 6) in the lowered position. At this time, the rod of the air damper 22 is contracted, and a force is always applied in the extending direction. It should be noted that the load applied to the lock portion (load) is such that when the movable seat 20 is locked in the lowered position, the air damper 22 does not exert a force in the extending direction and expands when the lock is released. ) And the risk of the movable seat body 20 being raised when the lock is released against the user's will.

  The seat lock device 3 has a U-shaped engagement tool 30 provided near the front end on the lower surface side of the movable seat 20. An attachment seat 31 constituting the seat locking device 3 is fixed near the rear end on the lower surface side of the fixed seat 13. The mounting seat 31 includes a top plate 310 and three side plates 311, 312, and 313, and is formed so that the lower side and the rear side are opened.

  In the center of the rear end of the top plate 310 of the mounting seat 31, a mounting member 32 having a required length is formed obliquely downward and rearward. Engagement hooks 33, 33 a are attached to the left and right sides of the attachment member 32 so as to be rotatable by a shaft 330. The engaging portions 331 of the engaging hooks 33 and 33a are formed on the front side of the rear edge.

  The engagement hooks 33, 33 a are urged clockwise in FIG. 5 by torsion coil springs 35 respectively hung between the attachment hooks 34. Note that the engagement hooks 33 and 33a stop at a position where the tip ends abut against the top plate 310 of the mounting seat 31 and the engagement portion 331 engages with the engagement tool 30 on the lower surface side of the movable seat 20. It is. The locked state of the movable seat body 20 due to the engagement between the engagement tool 30 and the engagement portions 331 of the engagement hooks 33 and 33 a is released by the operation of the lock release device 4.

  Attachment pins 36 and 36a are fixed to the front ends of the engaging hooks 33 and 33a, penetrating in the left-right direction. Further, the front ends of the tubes 400, 410, 420 of the outer cables 40, 41, 42 constituting the lock release device 4 are fixed to the front side plate 311 of the mounting seat 31. The tips of the wires 401 and 421 of the outer cables 40 and 42 on both the left and right sides are connected to the outside of the mounting pins 36 and 36a of the engagement hooks 33 and 33a (see FIG. 6).

  Further, the tip of the wire 411 of the central outer cable 41 is connected to a component 43 having a pulley 430. A component force wire 44 is turned around the pulley 430, and both ends of the component wire 44 are connected to the inside of the mounting pins 36, 36a of the engagement hooks 33, 33a. According to this structure, the engagement hooks 33 and 33a can be pulled simultaneously with the same force by the wire 411 of the outer cable 41.

  Outer cables 40, 41, 42 out of the outer cables 40, 41, 42 are extended to user operation parts 45, 45 a provided on the upper front side of the armrests 15, 15 a. Further, the central outer cable 41 is extended to an operation portion 45b for an assistant provided at the upper portion of the backrest 14. In the present embodiment, the outer cables 40, 41, 42 are passed through the components of the armrests 15, 15a and the backrest 14, but may be provided along the outside of the components.

Since the user operation units 45 and 45a and the assistant operation unit 45b have the same structure, only the structure of one user operation unit 45 will be described mainly with reference to FIG. Detailed descriptions of the structures of the operator operation unit 45a and the assistant operation unit 45b are omitted.
Note that the user operation unit is not necessarily provided in two places, and may be provided in one place if there is no problem in safety. Moreover, about the location which provides the operation parts 45 and 45a for users, and the operation part 45b for assistants, it does not specifically limit, If there is no problem in operativity and safety | security, you may provide in a different place from the above.

  The user operation unit 45 provided on the left armrest 15 has an operation body 450 having a U-shaped cross section with the lower side opened. The operation body 450 is mounted so as to be slidable in a vertical direction so as to cover a space portion 451 formed so as to be swung down from the upper surface side of the armrest 15. The operation body 450 is stopped at a position where the upper surface is flush with the upper surface of the armrest 15.

  An outer cable 40 is introduced into the space portion 451 from the front side. The distal end of the tube 400 of the outer cable 40 is fixed to a fixture 46 that is fixed to the bottom of the space 451 slightly toward the front. In addition, on the rear side of the space portion 451, an inverted L-shaped operating body 47 is pivotally attached by a shaft 470 fixed to the inner side surface of the space portion 451 so that it can rotate in the vertical direction. The actuating body 47 has a front-facing transverse member 471 and a downward-facing longitudinal member 472, and the distal end (lower end) of the longitudinal member 472 is connected to the distal end of the wire 401 of the outer cable 40.

  The wire 401 of the outer cable 40 is always pulled by the biasing force of the torsion coil spring 35 biasing the engagement hooks 33 and 33a. As a result, the operating body 47 is urged clockwise in FIG. 4, and the lateral member 471 pushes up the operating body 450 with its tip abutting against the lower surface of the operating body 450 to hold the stop position. Yes. Then, by pulling down the operation body 450 of the user operation parts 45 and 45a and the assistant operation part 45b and pulling the wire 401, the engagement hooks 33 and 33a are rotated counterclockwise in FIG. The locked state of the movable seat 20 can be released by turning.

  Specifically, (a) when each operation body 450 of the user operation parts 45 and 45a is operated simultaneously, both the engagement hooks 33 and 33a are rotated forward to engage the engagement part 331 and the engagement tool. 30 is disengaged, and the locked state of the movable seat 20 is released. In addition, (b) when the operation body 450 of the assistant operation section 45b is operated, both the engagement hooks 33 and 33a are rotated by being pulled by the component force wire 44, and the movable seat body 20 is also rotated. The locked state of is released.

Further, (c) when only one operating body 450 of the user operation portions 45 and 45a is operated, only one of the engagement hooks 33 and 33a is rotated, and the other is not rotated. The locked state by the non-rotating engagement hook is maintained.
Although a specific structure is not shown in the present embodiment, in order to further enhance safety, the user operation units 45 and 45a are used so that the user does not stand up alone when there is no assistant. The locked state of the movable seat 20 can also be released only when one (or both) of these and the operating body 450 of the assistant operation section 45b are operated simultaneously.

(Function)
With reference to FIG. 1 thru | or FIG. 6, the effect | action of the standing assistance chair A1 which concerns on this Embodiment is demonstrated.
In using the stand-up auxiliary chair A <b> 1, first, the movable seat body 20 is locked at the lowered position by the seat body locking device 3. In the lowered position, the movable seat 20 is locked by engaging the engagement hooks 33 and 33a on the fixed seat 13 with the engagement tool 30 on the movable seat 20 side. By setting the movable seat body 20 to the locked state, the seat surface of the movable seat body 20 becomes the same height as the seat surface of the fixed seat body 13 to form a seat portion. In this state, the user can sit on the seat. If the user puts his / her feet on the footrest plates 18 and 18a, the standing assist chair A1 is less likely to become unstable when standing up. Further, if the user removes his / her foot from the footrest plates 18 and 18a, the position of the standing assistance chair A1 can be finely adjusted so that the foot is stretched on the floor.

  When the user stands up from the seated state, if the user himself / herself operates both of the user operation parts 45 and 45a, both the engagement hooks 33 and 33a are pulled and the engagement tool 30 is engaged. The lock is released and the movable seat 20 is unlocked. When the movable seat body 20 is unlocked, the movable seat body 20 is pushed up by the link mechanisms 21 and 21a operated by the urging force of the air damper 22 to push up the user's buttocks and push it forward to use. A person's standing up motion can be assisted.

  Further, the link mechanism 21, 21 a for moving the movable seat 20 up and down is the lower rear joint 214 below the rotary joint member 212 constituting the rear upper joint 216 on the rear side of the movable seat 20. The lower front joint 213 is positioned above the lower front joint 213 on the lower side of the rotary joint member 211 constituting the upper front joint 215 on the front side, and the lower front joint 213 is positioned in the vicinity of the rear side of each front leg 11 of the chair body 1. As a result, when the movable seat 20 rises, the movable seat 20 is moved sufficiently forward, and the rear side of the movable seat 20 is raised to push the user's buttocks forward naturally. The user can get up easily.

  The fixed seat 13 provided on the front side of the seat frame 10 of the chair body 1 does not move from the fixed position, and the user's buttocks can be pushed up only by the movable seat 20. Further, the movable seat body 20 comes to a position covering the fixed seat body 13 by moving forward. Thereby, there is no possibility that the movable seat 20 will push the back of the user's knee and the back of the thigh forward more than necessary, and the back of the knee and the back of the thigh will be pushed against the user's will. The fall of the user can be prevented, and the user's rising motion can be assisted more safely.

  Further, for example, when the user mistakenly operates only one portion of the user operation portions 45 and 45a, one of the engagement hooks 33 and 33a remains engaged with the engagement tool 30. The movable seat body 20 cannot be unlocked. Thus, the operation of the movable seat 20 contrary to the will of the user does not occur, and the safety is high. Furthermore, when the user sitting on the standing assistance chair A1 has an assistant, the user can easily operate the user by operating the operation part 45b for one assistant without operating the user. Helps to get up.

  After the movable seat body 20 is raised, the movable seat body 20 may be pushed down to the lowered position to be in a locked state, but the movable seat body 20 may be left in the raised state. In this case, when the user sits, the urging force of the air damper 22 acts on the link mechanisms 21 and 21a, so that the user can sit safely. At this time, the movable seat 20 in the raised state does not come out from the front end of the fixed seat 13 and does not get in the way, so the user can sit with his / her feet closer to the fixed seat 13, Also in this respect, safety is high.

  When the urging force of the air damper 22 as the urging means is too strong or too weak to match the user's condition, the transition body 24 is moved along the screw rod 23 by turning the screw rod 23 as described above. The biasing force is adjusted by changing the angle in the vertical direction with respect to the rotating node member 211 by moving forward and backward. Thereby, the force which pushes up a buttocks part with the movable seat 20 can be adjusted according to a user's state, and safety can be improved more.

[Embodiment 2]
Please refer to FIG.
The stand-up auxiliary chair A <b> 2 includes a chair body 1, a seat body lifting device 5, a seat body lock device 3, and a lock release device 4. The chair body 1, seat lock device 3 and lock release device 4 excluding the seat lifting device 5 of the stand-up auxiliary chair A2 are respectively the same as the chair body 1, seat lock device 3 and lock release device 4 of the stand-up auxiliary chair A1. Since these are similar structures, description thereof will be omitted.
In addition, in FIG. 7, the same code | symbol is attached | subjected and shown to each same part as each part of said stand-up auxiliary chair A1, or equivalent.

  The seat lifting / lowering device 5 provided in the chair body 1 has a movable seat 50 that fits on the rear side of the fixed seat 13. On the lower surface of the movable seat 50, a leg-shaped front support member 51 and a rear support member 52 each having two left and right are formed. Engaging wheels 510 are respectively attached outwardly to the lower ends of the front support members 51 on both the left and right sides. In addition, engagement wheels 520 are attached outwardly to the lower ends of the left and right rear support members 52, respectively.

  Under the left and right sides of the seat frame 10, guide members 53 formed so that guide paths 531 and 532 described later pass through a vertical plane are fixed to the chair body 1. Each guide member 53 is formed to have a substantially “C” cross-sectional shape, and its open side is directed inward, and the engagement ring 510 of the front support member 51 and the rear support member 52 is fitted therein. Thus, the engagement ring 510 can be moved along the guide members 53 without dropping off.

  Each guide member 53 has a front guide path 531 that is inclined forward and inclined, a connection portion 533 having almost the same height over the entire length connected to the rear end, and a rear guide path 532 that is inclined forward and connected to the rear end. . This configuration is an element that raises the movable seat 50 and an element that moves it forward. The length from the start point 531a to the end point 531b of the front guide path 531 and the length from the start point 532a to the end point 532b of the rear guide path 532 are substantially the same.

  Further, the inclination angle of the rear guide path 532 is larger than the inclination angle of the front guide path 531. Therefore, the height difference between the start point 532a and the end point 532b of the rear guide path 532 is higher than the height difference between the start point 531a and the end point 531b of the front guide path 531. This configuration is an element for inclining the movable seat 50 toward the front side. Further, the end point 531b of the front guide path 531 is located in the vicinity of the rear side of the front leg 11 of the chair body 1.

  Then, each engagement wheel 510 of the front support member 51 of the movable seat 50 and each engagement wheel 520 of the rear support member 52 are fitted into the front guide path 531 and the rear guide path 532 of each guide member 53, respectively. Yes. In the movable seat 50, each engagement wheel 510 of the front support member 51 is positioned at the start point 531 a of the front guide path 531 of the guide member 53, and each engagement wheel 520 of the rear support member 52 is the rear guide path of the guide member 53. When it is located at the start point 532a of 532, its seating surface becomes almost the same height as the seating surface of the fixed seat 13, and the rod of the air damper 54 described below is contracted.

  The air damper 54 that pushes up the movable seat body 50 is pivotally mounted so that the base end portion of the cylinder can be rotated in the vertical direction at the center in the width direction near the rear surface of the movable seat body 50. Further, the tip of the rod of the air damper 54 is pivotally attached to the center in the width direction of the reinforcing member 17 provided between the lower sides of the rear legs 12 so as to be able to rotate in the vertical direction.

(Function)
With reference to FIG. 7, the operation of the standing assistance chair A2 according to the present embodiment will be described.
In addition, description is abbreviate | omitted fundamentally about the effect | action common to said stand-up auxiliary chair A1.

  As with the stand-up auxiliary chair A1, the stand-up auxiliary chair A2 locks the movable seat 50 to the lowered position by the seat lock device 3, and when the user sitting on the seat stands up, the user himself or his / her assistance The person operates the lock release device 4 to release the locked state of the movable seat body 50. When the locked state of the movable seat 50 is released, the movable seat 50 is pushed up by the urging force of the air damper 54 to push up the user's buttocks and push it forward to assist the user's rising motion. Can do.

  At this time, the movable seat 50 is lifted while being guided by the guide members 53 on the engagement wheels 510 and 520 at the tips of the front support member 51 and the rear support member 52. Specifically, the engagement wheel 510 of the front support member 51 moves up the front guide path 531 of the guide member 53 from the start point 531 a to the end point 531 b, and the engagement wheel 520 of the rear support member 52 moves to the rear guide path 532 of the guide member 53. Is moved upward from the start point 532a to the end point 532b.

  The height difference between the start point 532a and the end point 532b of the rear guide path 532 is formed to be higher than the height difference between the start point 531a and the end point 531b of the front guide path 531, and the end point 531b of the front guide path 531 is the chair body 1. Is positioned in the vicinity of the rear side of each front leg 11 so that when the movable seat body 50 is raised, the movable seat body 50 is sufficiently moved forward, and the rear side of the movable seat body 50 is raised. The user's bottom can be pushed out naturally, so that the user can stand up easily.

  Further, the movable seat body 50 comes to a position covering the fixed seat body 13 by moving forward. Thereby, there is no possibility that the movable seat 50 will push the back of the user's knee and the back of the thigh forward more than necessary, and the back of the knee and the back of the thigh will be pushed against the user's will. The fall of the user can be prevented, and the user's rising motion can be assisted more safely.

  Note that the terms and expressions used in this specification are merely explanatory and are not limiting at all, and terms and expressions equivalent to the features described in this specification and parts thereof. There is no intention to exclude. Further, it goes without saying that various modifications are possible within the scope of the technical idea of the present invention.

A1 Auxiliary chair 1 Chair body 10 Seat frame 11 Front leg 12 Rear leg 13 Fixed seat 14 Backrest 15, 15a Armrest 16 Reinforcement member 18, 18a Foot rest 2 Seat lifting device 20 Movable seat 201 Rising part 21, 21a Link Mechanism 210, 210a Fixed joint member 211 Rotating joint member 212 Rotating joint member 213 Lower front joint 214 Lower rear joint 215 Upper front joint 216 Upper rear joint 217 Connecting member 218, 218a Lifting joint member 22 Air damper 23 Screw rod 230 Knob 24 transition body 25 mounting tool 3 seat lock device 30 engaging tool 31 mounting seat 310 top plate 311, 312, 313 side plate 32 mounting member 33, 33 a engaging hook 330 shaft 331 engaging part 34 mounting member 35 torsion coil spring 36 36a Mounting pin 4 Unlocking device 4 DESCRIPTION OF SYMBOLS 0 Outer cable 400 Tube 401 Wire 41 Outer cable 410 Tube 411 Wire 42 Outer cable 420 Tube 421 Wire 43 Component tool 430 Pulley 44 Component wire 45, 45a User operation unit 45b Assistant operation unit 450 Operation body 451 Space Part 46 Attachment 47 Actuator 470 Shaft 471 Horizontal member 472 Vertical member A2 Auxiliary chair 17 Reinforcement member 5 Seat lifting device 50 Movable seat 51 Front support member 510 Engagement wheel 52 Rear support member 520 Engagement wheel 53 Guide member 531 Front guideway 531a Start point 531b End point 532 Rear guideway 532a Start point 532b End point 533 Connection portion 54 Air damper

Claims (7)

A chair on which a seat (13, 20) (13, 50) is placed on a leg structure (11, 12),
The seat (13, 20) (13, 50) is divided into a front side and a rear side,
The front seat (13) is fixed to the leg structure (10, 11, 12), and the rear seat (20, 50) is a lifting mechanism (21, 21a) (53, 53a). Is provided in the leg structure (10, 11, 12) via,
The elevating mechanism (21, 21a) (53, 53a) is operated by the rear side seat body (20, 50) being moved in parallel with the upward movement, the forward inclination and the forward movement. The seat body (20, 50) is configured to come to a position covering the front side seat body (13) by moving forward.
Standing auxiliary chair. The lifting mechanism is composed of a link mechanism (21, 21a), and the link mechanism (21, 21a)
An element for raising the rear seat (20), an element for tilting the rear seat (20) forward, and an element for moving the rear seat (20) forward. The elements of include, in parallel, configured to operate the rear seat (20),
The auxiliary chair for standing up according to claim 1. The elevating mechanism includes guide means (53, 53a), and the guide means (53, 53a)
An element for raising the rear seat (50), an element for tilting the rear seat (50) forward, and an element for moving the rear seat (50) forward. Including elements configured to operate the rear seat in parallel,
The auxiliary chair for standing up according to claim 1. A chair body (1) having a fixed seat (13) on the front side;
A seat lifting device (2) having a movable seat (20) that constitutes a seat together with the fixed seat (13),
With
The seat lifting device (2)
A link mechanism (21, 21a) for moving the movable seat (20) up and down;
Energizing means (22) for energizing the link mechanism (21, 21a) or the movable seat body (20), and raising the movable seat body (20) with a required force from the lowered position;
A seat locking device (3) for locking the movable seat (20) or the link mechanism (21, 21a) at the lowered position of the movable seat (20);
Unlocking means (4) for releasing the locked state of the movable seat (20) by the seat locking device (3);
With
The link mechanism (21, 21a)
Joints (215, 216) of the link mechanism (21, 21a) are provided at two places in the front and rear of the movable seat (20),
The joint constituting the lower joint (214) of the joint member (212) constituting the joint (216) on the rear side of the movable seat (20) constitutes the joint (215) on the front side of the movable seat (20). The lower joint (213) of the joint member (211) which is positioned above the lower joint (213) of the member (211) and constitutes the joint (215) on the front side of the movable seat (20). ) Is located near the front leg (11) of the chair body (1),
The movable seat (20) is configured to come to a position covering the fixed seat (13) by moving forward.
Standing auxiliary chair. A chair body (1) having a fixed seat (13) on the front side;
Seat lifting device (5),
With
The seat lifting device (5)
A movable seat (50) having a front support member (51) and a rear support member (52) which are formed downward and downwardly forming a seat together with the fixed seat (13) of the chair body (1). When,
A guide member (53, 53a) for guiding the vertical movement of the front support member (51) and the rear support member (52) of the movable seat (50);
Biasing means (54) for raising the movable seat (50) from a lowered position with a required force;
A seat locking device (3) for locking the movable seat (50) in the lowered position;
Unlocking means (4) for releasing the locked state of the movable seat body (50) by the seat body locking device (3);
With
The guide member (53, 53a)
A front guide path (531) for guiding the front support member (51);
A rear guide path (532) for guiding the rear support member (52);
With
The height difference between the start point (532a) and the end point (532b) of the rear guide path (532) is formed to be higher than the height difference between the start point (531a) and the end point (531b) of the front guide path (531). And the end point (531b) of the front guideway (531) is positioned in the vicinity of the front leg (11) of the chair body (1),
The movable seat (50) is configured to come to a position covering the fixed seat (13) by moving forward.
Standing auxiliary chair. Urging force adjusting means (23, 24, 25) for adjusting the urging force by the urging means (22, 54) is provided.
The stand-up auxiliary chair according to claim 4 or 5. The unlocking means includes a user operation unit (45, 45a) for releasing the locked state of the movable seat (20, 50) by a plurality of operations, and a movable seat (20, 50) by a single operation. Having an operation section (45b) for an assistant for releasing the locked state,
The stand-up auxiliary chair according to claim 4, 5 or 6.

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