JP2000084000A - Body support device - Google Patents

Abstract

(57) [Problem] To provide a body support device that allows easy adjustment of the occupant's seat up / down movement and posture deformation, and enables continuous posture deformation from a sitting posture to a supine posture. A body support device having a seat portion and a swingable backrest portion, a link mechanism including a driving rocker arm and a driven rocker arm having the same triangular shape, and an upper fulcrum disposed on the driving rocker arm. In addition, there is provided a driving unit that allows the seat portion and the backrest portion that pivotally support the tip of the piston rod for rocking the driving rocker arm to be able to move up and down,
By swinging the driving rocker arm, the seat gets a parallel motion that draws an arc, and it is possible to move up and down.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a welfare medical device requiring a function of supporting the body, and includes a reclining chair, a stretcher for transportation, an operating table, which is used for bathing a physically handicapped person, a sick person, etc. The present invention relates to a body support device that can easily transfer passengers and reduces the workload of a caregiver and the degree of fatigue of a caregiver using various treatment chairs, hairdressing chairs, beds for the physically handicapped and the disabled.

[0002]

2. Description of the Related Art In a welfare medical device, a device for supporting a body of a cared person, a patient, a medical examinee, or the like is provided in order to perform operations such as transportation, nursing care, treatment, and examination on a cared person, a patient, and a patient. Posture support systems for occupants such as a cared person, patient, and examinee who are mounted on these devices are roughly classified into a sitting posture and a supine posture. However, the sitting position forces the occupant to use unnecessary muscle strength by forcing him to maintain a cramped position. In addition, a passenger with weak muscles cannot maintain the posture, and may fall off the device. On the other hand, in the supine method, the worker who takes care of, treats, tests, etc. is left behind, and has a drawback that the passenger's willingness to become independent is reduced. In addition, when transferring to the device, the worker needs assistance to lift the occupant with a physical disability, and there is a problem that the muscular load on the worker is large.

[0003] In order to solve these problems, devices capable of changing the posture from a sitting position to a supine position have been conventionally developed. For example, a reclining chair for bathing (conventional method 1) used for bathing a physically handicapped person, a sick person, etc.
It is disclosed in 335513. However, in that invention, the height of the seat in the supine position is the height of the sitting position,
Or, it is fixed at the height of the patient bed and caregivers and inspectors who perform work such as cleaning, assistance, inspection, treatment, etc.
There are drawbacks such as the inability to adjust the height of the seat suitable for a worker such as a doctor, and the occupant's upper body being repositioned rapidly during posture change. For this reason, in the conventional body support device, the worker is forced to proceed with the work while largely changing the posture and position of the worker due to the change in the posture of the occupant. As a device that can adjust the height of the occupant's seat, for example, a nursing care trolley (conventional system 2) is disclosed in US Pat.
Although it is disclosed in Japanese Patent No. 38954, the backrest integrated horizontally with the seat is raised and lowered, and there is a problem that the backrest cannot be inclined according to the seat height and posture of the occupant. Table 1 shows a comparison of the above methods.

[0004]

[Table 1]

[0005]

The occupant is provided with a sitting posture having a seat height that is easy to sit down and a comfortable supine posture, and when the posture is changed from the sitting posture to the supine posture, fear is felt. That is not to be felt. On the other hand, for the worker who performs cleaning, assistance, inspection, treatment, etc., the passenger is provided with free height adjustment of the seat according to the height difference of the worker and the work content, and The target position for work such as cleaning, assistance, inspection, treatment, etc. is to minimize the movement of the position even if the occupant's posture is deformed. Furthermore, in order to solve these problems with the related art, it is apparent that a plurality of drive sources are required, which leads to an increase in the size of the apparatus, an increase in weight and an increase in manufacturing cost. The present invention, while minimizing the position movement of the occupant's upper body as much as possible, continuously deforming the posture from a sitting posture suitable for the occupant to a supine posture suitable for the worker, and in the supine posture. Provided is a body support device that enables a single drive source to adjust a height suitable for an operator while maintaining a suitable posture of an occupant.

[0006]

Means for Solving the Problems As a result of intensive studies in view of the above, the present inventor has solved this problem by the following means. (1) A body support including a seat 1, a swingable backrest 2, a backrest frame 20 disposed on the back of the backrest 2, and a seat frame 3 having a rearwardly extending portion 3 ′ supporting the seat 1. In the device, the same triangular fulcrum a,
The main rocker arm 13 and the driven rocker arm 14 provided with b, c and a ', b', c 'are respectively arranged at front and rear positions at a distance, and the fulcrums a and a' are fixed to the base 5 or The supporting members b and b 'are rotatably supported by the extended members, respectively, and the supporting points b and b' are rotatably supported at intervals on the rear extending portion 3 'of the seat frame 3, and the remaining supporting points c and c' are connecting rods. A link mechanism is constituted by being rotatably connected to each other at 15 and a seat part 1 and a backrest part 2 pivotally supporting a tip of a piston rod for swinging the driven rocker arm at an upper fulcrum 27 provided on the driven rocker arm. The body support device is provided with a driving means for raising and lowering the body, and swinging the driving rocker arm 13 to obtain a parallel movement of the seat 1 in a circular arc so that the seat can be raised and lowered.

(2) A seat having a seat portion 1 and a swingable backrest portion 2, a seat frame 3 having a rearwardly extending portion 3 'for supporting the seat portion 1 of the seat, and supporting the backrest portion 2. A backrest frame 20, a driving means for raising and lowering the seat frame 3, and an extension member extending from an upper portion of the fixed base 5 in contact with the back portion of the backrest portion 2 at a position independent of the elevation of the seat portion 1. 6 the first locking means 21 provided at the distal end, and the backrest portion 20 and the backrest frame 20 project from the backrest frame 20 which comes into contact with the rearwardly extending portion 3 ′ of the seat frame 3 as the backrest portion 2 and the backrest frame 20 approach the horizontal by swinging. Alternatively, the second locking means (9, 9) protruding from the rear extension 3 'of the seat frame 3
9 ′), in the configuration in which the backrest portion 2 swing range limiting means for limiting the swing range of the backrest portion 2 is arranged,
While the seat is being lifted and lowered, at a certain height, the backrest 2 is located at a position independent of the lifting and lowering of the seat 1.
The angle between the seat 1 and the backrest 2 is variable, and at a height exceeding that, the backrest 2
Leaves the first locking means 21 and moves to the second locking means (9,
9 '), a body support device characterized in that it can be moved up and down while maintaining a certain angle.

(3) By using the driving means according to claim 1, wherein the horizontal movement is added to the lifting and lowering movement of the seat, the upper end surface of the backrest part 2 starts from the area where the backrest part 2 comes into contact with the first locking means 21. The body support device according to (1) or (2), wherein the position movement of the portion up to the free end is reduced. (4) The link mechanism including the driven rocker arm 13 and the driven rocker arm 14 is disposed at the lower left and right side surfaces of the seat 1, respectively, according to any one of (1) and (3). A body support device as described. (5) a seat having a seat portion 1 and a swingable backrest portion 2, a seat frame 3 having a rearwardly extending portion for supporting the seat portion 1 of the seat, a backrest frame 20 for supporting the backrest portion 2, When the seat portion 1 and the backrest portion 2 are raised by a driving means that enables the seat frame 3 to move up and down, the seat portion 1
(1) to (4), wherein a wide space opened forward is formed below the backrest 2 in the supine position.
A body support device according to any one of the preceding claims. (6) The wheel X18 and the wheel Y19 are arranged on the rear bottom surface and the front bottom surface of the base 5, so that the entire device can travel. A body support device according to claim 1. (7) The body support device is used by being sent into a horizontal whole body shower device in which a large number of shower nozzles are arranged vertically and horizontally and used.
The body support device according to any one of the above items (6).

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, an outline of an embodiment of the body support device of the present invention will be described below. The body support device, a leg rest part and a seat part for supporting the body and a swingable backrest part, and a driving means for driving these,
A main drive having an identical triangle for lowering both sides of the body support device and for changing the angle between the seat and the backrest, which is constituted by a base for storing the driving means. A rocker arm and a driven rocker arm are arranged in parallel at arbitrary distant positions, and the drive rocker swings the driven rocker arm, so that the driven rocker arm follows, and a position of the leg rest. When the seat is in a sitting position from the same plane as the seat, the center of rotation of the leg rest moves to the lower part of the seat, and the leg rest can be folded to the lower part of the seat. It has a link mechanism consisting of nodes, and the two link mechanisms are driven by the same drive means.

At a certain height of the backrest, the roller provided at the tip of the member extending from the upper part of the base and the abutment fixed to the lower part of the backrest or the support 9 'fixed to the seat frame provide the above-mentioned structure. The roller makes the angle between the seat and the backrest variable, and at a height beyond that, the backrest is supported by the abutment or the support and moves up and down while maintaining a certain angle. The fixed angle can be adjusted by an abutment fixed to the lower part of the backrest or a support fixed to the seat frame. The lifting and lowering movement of the seat and backrest is reduced by the driving means with horizontal movement, combined with the operation of the rollers and the abutment, to minimize the movement of the occupant's head position from the sitting position to the supine position. Can be done. From the above, it is possible to reduce the size, weight, and manufacturing cost of a single drive source, and to minimize the displacement of the upper body of the occupant while working from a sitting position with a suitable height for the occupant. Provided is a body support device that can continuously deform a posture up to a supine posture at a height suitable for an occupant, and adjust a height suitable for an operator in the supine posture while maintaining the occupant's preferred posture. I do.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a body supporting apparatus according to an embodiment of the present invention. 1 is an external perspective view of the stretcher of the present invention, FIG. 2 is a whole-body shower bath device into which the stretcher is fed, FIG.
4 is a front view of the inclined position, FIG. 5 is a front view of the horizontal position, FIG. 6 is an enlarged front view of FIG. 5, FIG. 7 is a plan view of FIG. 6, FIG. FIG. 10 is a comparative explanatory view of supporting means (a) and (b), FIG. 10 is a comparative explanatory view of driving means (c) and (d),
FIG. 11 is a diagram for explaining the operation of the driving means (e), (f), and (g) of the present invention. FIG. 12 is a graph showing the backrest angle and the height of the seat and the eye. FIG. Table 1 is a comparison table between the method of the present invention and the conventional method. 1 to 11, 1 is a seat portion, 2 is a backrest portion, 3 is a seat frame, 4 is a driving means, 5 is a base, 6 is a member, 7 is an angle 7, 8 is an angle 8, 9 is a contact. Fixture, 9 'is support, 10
Is a linear motion, 10 'is an arc motion, 11, 11' and 1
1 "near the contact portion of the roller 21 when the backrest is in the sitting position;
12, 12 'and 12 "are the free ends of the backrest, 13 is the driven rocker arm, 14 is the driven rocker arm, 15
Is a rod, 16 is a drive cylinder, 17 is an arc, 18 is a wheel X, 19 is a wheel Y, 20 is a backrest frame, 21 is a roller, 23 is a spring, 24 is a leg rest, 25 is a rotation center, and 26 is a lower fulcrum. , 27 is an upper fulcrum, 28 is a whole body shower device, 29 is a bather, 30 is a shower nozzle, 1
00 indicates a stretcher.

As shown in FIG. 2, the stretcher 10
0 indicates wheels Y (casters, etc.) 19 and wheels X1 on the base 5.
It is characterized in that it can be mounted and run, and a space that opens forward can be formed below the seat 1 and the backrest 2. After sending the stretcher into the whole-body shower bath device 28 using this space, the height of the supine posture is adjusted, and a plurality of shower nozzles 30 attached to the entire inside of the whole-body shower bath device 28 are used. It becomes possible to spray a shower on the buttocks, the back, and the whole of the 29. In FIGS. 1 and 3 to 11, a seat having a seat portion 1 and a swingable backrest portion 2 in order to provide a seating position that is easy to sit down and a comfortable supine position in which the height of the occupant can be adjusted, A seat frame 3 for supporting the seat 1 of the seat;
And a position independent of raising and lowering the seat 1 such as the base 5 or a member 6 extended therefrom and a position following the raising and lowering of the seat 1 such as the backrest frame 20. A configuration in which two support means such as the roller 21 and the abutment 9 (which may be the support 9 ′ in FIG. 9 or FIG. 11), which are support means for restricting the swing of the backrest 2, is disposed at a location. 11, the main rocker arm 13 and the driven rocker arm 14 provided with any fulcrum a, b, c and a ′, b ′, c ′ forming the same triangle are arranged in parallel at arbitrary distant positions. The fulcrums a and a 'are rotatably held by the base 5 or a member 6 extending therefrom, and the fulcrums b and b' are rotatably connected to each other by a part of the seat frame 3, and the remaining fulcrums c And c ′ are also rotatably connected to each other by a rod 15 By forming a link mechanism and swinging the driven rocker arm 13 by expansion and contraction of the drive cylinder 16 or rotation of the electric motor and the speed reducer,
The swing causes the driven rocker arm 14 to follow through the rod 15 and the seat frame 3, and the seat 1 of the seat
Means were taken to make possible the driving means for obtaining the parallel movements that describe the seven. The relationship between the drive cylinder and seat
In FIG. 13, a graph of the drive cylinder stroke and the seat surface height is shown.

While the sheet is moving up and down, a certain height h3
Until (FIG. 9), the backrest 2 is supported by the roller 21 at a position independent of the elevation of the seat 1, and the angle 7 between the seat 1 and the backrest 2 can be varied (FIG. 9A). At a height h4 exceeding that, the backrest 2 is
9 'at a position following the lifting and lowering of the seat 1
(FIG. 9 (b)) means which is supported by (or may be the contact member 9) and moves up and down while maintaining the fixed angle 8 (FIG. 9 (b)).

Next, in order to eliminate the fear of the occupant due to the posture deformation and to solve the problem of reducing the position movement of the occupant's upper body due to the posture deformation, FIG.
The seat 1 moves horizontally in such a manner that a linear motion 10 that moves horizontally forward when ascending, and a horizontal motion backward when descending, or an arc motion 10 ′ in which the seat 1 draws an arc trajectory in conjunction with elevating. By using the driving means to which the movement is added, the area around the contact of the support means roller 21 of the backrest portion is obtained.
The position movement (11 → 11 ′ → 11 ″, 12 → 12 ′ → 12 ″) of the portion from 1 to the free end 12 of the backrest is minimized. The above state is shown in the graph of the backrest angle, the seating surface, and the eye height in FIG.

The detailed configuration and operation of the shower bath stretcher will be described below. In FIG. 4, (1) the traveling means of the wheel X18 at the rear of the base 5 and the wheel Y19 at the front. In FIG. 11, (2) the main rocker arm 13 and the driven rocker arm 14 having the same triangular fulcrums a, b, c and a ', b', c ', respectively, are arbitrarily separated from each other. Place in parallel to. (3) The fulcrum a of the driven rocker arm 13 is rotatably supported by the base 5, and the fulcrum a ′ of the driven rocker arm 14 is rotatably supported by the member 6 extending from the upper portion of the base 5. (4) The fulcrum b of the driven rocker arm 13 and the fulcrum b ′ of the driven rocker arm 14 are rotatably connected to each other by the seat frame 3. (5) The fulcrum c of the driven rocker arm 13 and the fulcrum c ′ of the driven rocker arm 14 are rotatably connected to each other by the rod 15. (6) The drive cylinder 16 is rotatably connected to a lower fulcrum 26, one end of which is located below the base 5, and an upper fulcrum 27, the other end of which is located in the middle of the driving rocker arm 13.

In FIG. 5, (7) when the drive cylinder 16 is extended, the driven rocker arm 13 swings clockwise, and the driven rocker arm 14 serving as a follower also follows in the same direction.
And the seat frame 3 connected to the driven rocker arm 14
Rises together with the seat 1 while moving forward in parallel. In FIG. 3, (8) when the drive cylinder 16 is contracted, the driven rocker arm 13 swings counterclockwise, and the driven rocker arm 14 serving as a follower also follows in the same direction.
And the seat frame 3 connected to the driven rocker arm 14
Descends while moving in parallel with the seat 1 in the rearward direction. (9) One end of the backrest frame 20 is rotatably connected to the seat frame 3 so that the backrest frame 20 on which the backrest portion 2 is placed can swing from the horizontal position to the upright position with respect to the seat portion 1. (10) The roller 21 is disposed at the tip of the member 6 extending from the upper part of the base 5 so that the backrest frame 20 is in the upright state when in the sitting position and the backrest frame 20 is in the horizontal state in the horizontal supine position. Then, the backrest frame 20 is supported by the rollers 21.

In FIG. 5, (11) The abutment 9 (which may be a support 9 ′ fixed to the seat frame 3) for supporting a preferable inclination of the backrest of the supine is arranged below the backrest frame 20. In FIG. 3, (12) The backrest frame 20 standing upright at the minimum height of the seat 1 is supported by the rollers 21, and the inclination gradually becomes gentler in conjunction with the rise of the seat 1. 4 and 5, (13) The backrest frame 20, whose inclination is gradually reduced in conjunction with the rise of the seat portion 1, is supported by the rollers 21, and at the same time, is also supported by the seat frame 3 via the contact member 9. When the seat height exceeds the supported seat height, the inclination change of the backrest portion 2 in conjunction with the elevation of the seat portion 1 is stopped, and the backrest frame 20 is supported by the seat frame 3 alone via the abutment 9. That is, the inclination of the backrest 2 is constant up to the maximum height of the seat. (14) At this time, the constant inclination angle of the backrest 2 is adjusted by adjusting the abutment 9 so that the occupant is at the most comfortable angle. FIG. 5 shows a case where the constant inclination angle is 0 degree. (15) The seat 1 is lowered from the maximum height, and the backrest 2
When the seat is supported by the rollers 21, the backrest frame 20 is supported by the seat frame 3 alone via the abutment 9, and the inclination of the backrest 2 is maintained at a constant angle.

In FIGS. 3 and 4, (16) When the back frame 20 is supported by the seat frame 3 via the abutment 9 and at the same time, the seat 1 is lowered from the height of the seat supported by the rollers 21. The backrest frame 20 is supported by the roller 21 alone, and the inclination of the backrest 2 is gradually increased to the minimum height in conjunction with the lowering of the seat 1. (17) The spring 23 is arranged between the backrest frame 20 and the driven rocker arm 14 so that the backrest 2 does not fall down toward the occupant. (18) The leg rest 24 constitutes a rotary link mechanism including a sliding pair that interlocks with the backrest frame 20. FIG.
5 to (5): (19) If the backrest 2 is in a horizontal supine position, the leg rest 24 becomes horizontal, and if the backrest 2 is inclined, the leg rest 2
4 tilts while its rotation center 25 moves below the seat 1. Further, in the sitting position, the leg rest 24 is folded under the seat 1 so as not to disturb the movement of the seated person. 4 and 5, (20) The leg rest 24 folded below the seat 1 in the sitting posture is provided with the backrest frame 20 following the rise of the seat 1.
Interlocking with the gentle inclination, the leg rest 24 follows the clockwise direction while its center of rotation 25 moves forward from below the seat 1. Furthermore, when the inclination of the backrest frame 20 becomes gentle, the leg rest part 24 comes out completely from the lower part of the seat part 1 and the inclination angle becomes gentle, and when the backrest frame 20 becomes horizontal, the leg rest part 24 also becomes horizontal. Become.

The features of the present invention described above are summarized in Table 1 in comparison with the conventional system. As can be seen from Table 1, in the method of the present invention, all items are marked with a circle (possible), but in the conventional methods 1 and 2, both circles have only two items.

[0020]

According to the present invention, the following effects are exhibited. 1. According to the first aspect of the present invention, it is easy to move up and down the seat and adjust the posture deformation of the occupant, and it is possible to continuously change the posture from the sitting posture at the knee height of the occupant to the supine posture. For example, it is possible to transfer a cared person or a patient with a physical disability to the device with or without the assistance of one worker, which is a great effect on the reduction of labor and labor of the worker. In addition, passengers can improve their independence through efforts to transfer on their own. Further, since the configuration is simple and the number of driving sources is reduced, it is possible to contribute to miniaturization and weight reduction of the body supporting device and reduction of manufacturing cost.

2. According to the invention of claim 2 of the present application, at the time of shifting to the supine position, the backrest can be moved up and down while holding the backrest at a fixed angle, so that the passenger can be provided with a comfortable position, and furthermore, treatment, inspection, and cleaning can be performed. The height of the seat and the angle of the backrest suitable for the worker can be freely obtained according to the height difference and the work content of the worker performing the work, so that the physical fatigue of the worker can be reduced. 3. According to the invention of claim 3 of the present application, since the movement of the position of the head can be reduced during the change in the posture of the occupant from the sitting posture to the supine posture, the fear of the occupant due to the swinging of the semicircular canal can be obtained. Feeling can be eliminated. Also, if the upper body of the occupant has a work target position such as cleaning, treatment, or inspection, the movement of the work target position is small even if the occupant's posture is deformed. There is no need to change, and a very favorable working environment is obtained.

4. According to the invention of claims 4 and 5 of the present application, the seat and the backrest can be raised and lowered stably and reliably, and a wide space is formed below the seat and the backrest. Can be sent to a whole-body shower bath device, etc. in which a large number of shower nozzles are arranged, and a shower nozzle attached to the bottom of the whole-body shower bath device can spray a shower to the bather's tongue and back. . 5. According to the invention of claim 6 of the present application, the wheels are provided on the rear bottom surface of the base and the wheels whose mounting shafts are rotatable on the front bottom surface, which is convenient for moving or transporting the apparatus. 6. According to the invention of claim 7 of the present application, the height adjustment of the supine posture of the body support device and the proper position of the shower nozzle and the bather's body are easily matched after the body support device is sent into the whole body shower bath device. It is possible to do.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a body support device of the present invention.

FIG. 2 is a whole-body shower bath device into which a stretcher has been sent.

FIG. 3 is a front view of a sitting position.

FIG. 4 is a front view of an inclined position.

FIG. 5 is a front view of a horizontal position.

FIG. 6 is an enlarged front view of FIG. 5;

FIG. 7 is a plan view of FIG. 6;

FIG. 8 is a right side view of FIG. 6;

FIG. 9 is a comparative explanatory view of the support means (a) and (b) of the present invention.

FIG. 10 is a comparative explanatory diagram of driving means (c) and (d).

FIG. 11 is an explanatory diagram of the operation of the driving means (e), (f), and (g) of the present invention.

FIG. 12 is a graph showing a backrest angle, a seating surface, and an eye height.

FIG. 13 is a graph of drive cylinder stroke and seat height.

[Explanation of symbols]

1: seat portion 2: backrest portion 3: seat frame 4: driving means 5: base 6: member 7: angle 7 8: angle 8 9: abutment tool 9 ': support tool 10: linear motion 10': arc motion 11, 11 ', 11 ": Roller 2 when the backrest is in a sitting position
1 Near the contact portion 12, 12 ', 12 ": Free end of the backrest 13: Drive rocker arm 14: Follower rocker arm 15: Rod 16: Drive cylinder 17: Arc 18: Wheel X 19: Wheel Y 20: Back frame 21 : Roller 22: Missing number 23: Spring 24: Leg rest 25: Center of rotation 26: Lower fulcrum 27: Upper fulcrum 28: Whole body shower device 29: Bather 30: Shower nozzle

Claims (7)

[Claims] 1. A seat frame comprising: a seat portion; a swingable backrest portion; a backrest frame provided on a back portion of the backrest portion; and a seat frame having a rearward extending portion for supporting the seat portion. In the body support device, the driving rocker arm 13 and the driven rocker arm 14 provided with the same triangular fulcrums a, b, c and a ', b', c 'are respectively disposed at front and rear positions at a distance, The fulcrums a and a 'are rotatably supported on the fixed base 5 or members extending therefrom, respectively, and the fulcrums b and b' are rotatable at intervals on the rear extension 3 'of the seat frame 3. And the remaining fulcrum c
And c ′ are rotatably connected to each other by a connecting rod 15 to form a link mechanism. Further, a seat that pivotally supports the tip of a piston rod for rocking the driven rocker arm at an upper fulcrum 27 provided on the driven rocker arm. A driving means for moving the unit 1 and the backrest unit 2 up and down;
A body support device characterized in that the seat portion 1 of the seat obtains a parallel motion that draws an arc by swinging the seat 3 so that the seat can be moved up and down. 2. A seat having a seat portion 1 and a swingable backrest portion 2, and a rearwardly extending portion 3 'for supporting the seat portion 1 of the seat.
, A backrest frame 20 for supporting the backrest portion 2, a driving means for allowing the seat frame 3 to move up and down, and contacting the back position of the backrest portion 2 at a position independent of the elevation of the seat portion 1. The first locking means 21 provided at the tip of the extension member 6 extending from the upper portion of the fixed base 5, and the back frame 2 extends rearward as the backrest 2 and the backframe 20 approach the horizontal position by swinging. The swing range of the backrest 2 is limited by the second locking means (9, 9 ') protruding from the backrest frame 20 in contact with the portion 3' or protruding from the rear extension 3 'of the seat frame 3. Backrest part 2
In a configuration in which the swing range limiting means is arranged, the backrest 2 is moved to the seat 1 at a certain height while the seat is raised and lowered.
Supported by the first locking means 21 at a position independent of the elevation of the seat, the angle between the seat portion 1 and the backrest portion 2 can be varied,
At a height exceeding that, the backrest 2 leaves the first locking means 21 and is supported by the second locking means (9, 9 ') so that it can be raised and lowered while maintaining a certain angle. Characterized body support device. 3. The free end of the upper end surface of the backrest 2 from where the backrest 2 comes into contact with the first locking means 21 by using the driving means according to claim 1, wherein horizontal movement is added to the elevating movement of the seat. 3. The body support device according to claim 1, wherein the position movement of the part to the end is reduced. 4. The link mechanism including the driven rocker arm 13 and the driven rocker arm 14 is provided at a lower portion on the left and right side surfaces of the seat portion 1, respectively. Body support device. 5. A seat having a seat portion 1 and a swingable backrest portion 2, a seat frame 3 having a rearwardly extending portion for supporting the seat portion 1 of the seat, and a backrest frame 20 for supporting the backrest portion 2. When the seat portion 1 and the backrest portion 2 are raised by the driving means capable of moving the seat frame 3 up and down, a wide space portion opened forward below the seat portion 1 and the backrest portion 2 in the supine state. It is formed, The claim 1 characterized by the above-mentioned.
The body support device according to any one of claims 4 to 7. 6. A wheel X1 is provided on the rear bottom surface and the front bottom surface of the base 5.
8. The body support device according to any one of claims 1 to 5, wherein a wheel Y19 is provided so that the entire device can run. 7. The body support device according to claim 1, wherein said body support device is used by being fed into a horizontal whole body shower bath device having a large number of shower nozzles arranged vertically and horizontally. The body support device according to any one of claims 1 to 4.