WO2001013768A1 - Waist part supporting device used in standing position - Google Patents

Abstract

A waist part supporting device A, comprising a flat base (1) on which a user is allowed to stand, a column (2) having a lower end fixed to the rear part of the base (1) and rising upward, and a back rest (3) installed at the upper part of the column (2), wherein the column (2) is bent so that the upper part is positioned forward from a base part, the back rest (3) is attached to the column (2) so as to be adjusted vertically and longitudinally, roller casters (4) brought into contact with the ground when the base (1) is inclined are attached to the rear end upper side of the base (1), and a foldable foot rest (5) is installed at the lower part of the column (2), whereby the waist part supporting device A capable of being moved, taking a rest position easily, performing a standing operation easily, and being handled easily with a simple structure can be provided.

Description

 Description Supporting equipment such as the waist when standing

 The present invention relates to a support such as a waist in a standing posture. Background art

 Conventionally, a pillar 101 made of a metal pipe, as shown in Fig. 15, for example, was fixed horizontally on the sidewalk in front of a restaurant, in a park, or inside a train, and at the upper end of the pillar. A support 103 such as a lumbar portion composed of a cylindrical backrest 102 is provided. This is designed so that the user 104 can stand in front of him and lean back on the backrest 102 to take a resting posture. This is effective for short breaks, and has the advantage of requiring less installation and use space than chairs and benches. Since the conventional support 103 such as the waist, the support 101 is embedded in the ground, or in the case of a train, fixed to the floor, so that it is removed when unnecessary or moved to another place. Let's not use it. A first technical object of the present invention is to provide a simple configuration and a configuration in which a support such as the waist can be moved. A further object of the present invention is to provide a mobile waist and other supporting devices that make it easier to take a resting posture and that are easy to use. Disclosure of the invention

The support device such as the waist of the present invention includes a flat base on which a user can stand, a support having a lower end fixed to a rear portion of the base, and an upright support, and a backrest provided at an upper portion of the support. It is characterized by having In such supports, the backrest is positioned at the base of the column. It is preferable that they are arranged slightly forward. Further, it is preferable that the backrest is provided so as to be vertically adjustable with respect to the support.

 Further, it is preferable that a caster that is grounded when the base is tilted is attached above the rear end of the base. Further, it is preferable that a footrest is provided at the lower part of the column. In such a case, it is preferable that the footrest card be provided so as to be foldable or extendable so as to be in a state of protruding from the support and a state of being accommodated along the support.

 Further, the backrest may be swingably attached to the support via a spring element. In addition, a buttocks support portion that allows the buttocks to lean or a seat portion to which the hips can be placed may be further provided below the backrest. Further, the support and the base may be foldably connected.

 When using the support such as the waist of the present invention, the user stands on the base and leans lightly on the backrest. In this state, since the weight of the user is on the base, the force applied laterally to the strut is supported between the strut and the base, and the strut does not fall down or shift laterally. Therefore, the user can safely lean the backrest on the backrest. Since the base does not have to be fixed to the floor, it can be moved freely.

 When the backrest is provided so as to be vertically adjustable with respect to the support pillar in such a waist or the like, the height of the backrest is adjusted to the height of the waist of the user to improve the usability. If the backrest is positioned slightly forward of the base of the support, the feet of the user will be wider and will not be obstructed by the base of the support. Therefore, it is more convenient to use. If a caster is attached above the rear end of the base that will touch the ground when the base is tilted, the casters will be attached to the ground by tilting the support. Therefore, if you push and pull the column while holding it, you can easily move the support such as the waist.

If a footrest is to be provided at the bottom of the support, the user must use one foot You can hang it on the rest. As a result, one leg can be rested so that the knee is bent, so that the burden on the lower back is further reduced and the patient is comfortable. If such a footrest is provided so as to be foldable or extendable so as to be in a state of protruding from the column and housed along the column, it is convenient because it does not hinder when not in use.

 In addition, when the backrest is attached to the support via a panel element so that it can swing freely, the backrest follows the change in the posture of the user who is leaning and provides a stable support function at all times. . Thereby, the feeling of use is further improved. In addition, when a buttocks support portion that can lean the buttocks is further provided below the backrest, a more stable resting posture can be taken. If a seat is provided to allow the user to sit down, it can be used for long breaks or sitting. In addition, when the support and the base are connected in a freely foldable manner, there is an advantage that handling during movement is easy and space for storage is reduced.

 Further, it is preferable that a support is provided in which a slit is formed from the front end of the base to the vicinity of the base of the support so as to pass the base of the support of another support. In that case, the supports can be stacked and stored. Further, a support tool in which the left and right ends of the backrest are curved and protruded forward is preferable. In that case, the curved and projecting portion can be used as an armrest. Furthermore, it is preferable that the hookrest be provided on the base so that the hookrest can be folded freely. In this case, it is possible to take a rest when resting. Further, it is preferable that the backrest force be curved in accordance with the curved shape of the back of the human body to the buttocks. In that case, you can lean easily and your resting posture will be easier. Further, it is preferable that the backrest and / or the base have a number of bumps for acupressure provided on the base. In that case, it is difficult for tiredness to accumulate on the feet and back.

Further, it is preferable that the column has a support that is connected to a foldable table or a support base. In that case, work in a standing posture etc. sell. Further, a support having a horizontal bar for hanging from above the backrest is preferable. If the user hangs on the side bar when taking a break, his back and other fatigue can be removed.

 In the above support, the base may be fixed to the floor, and the support may be fixed to the floor. BRIEF DESCRIPTION OF THE FIGURES

 FIG. 1 is a rear perspective view showing one embodiment of a support device such as a waist of the present invention.

 2A and 2B are cross-sectional views of a main part showing a mechanism for adjusting the height of the backrest of the support of FIG.

 FIG. 3 is a side view showing a use state of the support of FIG.

 FIG. 4 is a side view showing the moving state of the support.

 FIG. 5A is an exploded perspective view showing an embodiment of a backrest swing mechanism according to the present invention, and FIG. 5B is a waist sectional view showing an assembled state thereof.

 FIG. 6 is a rear perspective view showing another embodiment of the support such as the waist of the present invention.

 FIG. 7 is a side view showing still another embodiment of a support device such as a waist of the present invention.

 8 to 13 are perspective views showing still another embodiment of a support tool such as a waist of the present invention.

 FIG. 14A and FIG. 14B are side views showing the use state of the support device such as the waist of the present invention.

 FIG. 15 is a perspective view showing an example of a conventional lumbar support. BEST MODE FOR CARRYING OUT THE INVENTION

The support A such as the waist shown in Fig. 1 is composed of the base 1 and the rear (The right side of 1) is provided with a column 2 having a root fixed to the upper surface thereof, and a backrest 3 provided at the upper end of the column 2 so as to be vertically adjustable. Further, in this embodiment, a roller caster 4 is attached above the rear end of the base 1, and a footrest 5 is attached to the lower part of the column 2 so as to be foldable.

 The base 1 is a plate-shaped member, and has a rectangular shape that is long in the front and rear in the present embodiment. The base 1 preferably has some weight, but may be light. The base is formed, for example, from a steel plate or a synthetic resin plate. The periphery of the upper surface of the base 1 may be surrounded by rubber or synthetic resin projections. Such a projection serves as a slipper to prevent the user's foot from coming out of the base 1. In addition, a stripe-shaped or spot-shaped anti-slip projection may be further provided on the upper surface of the base 1.

 The roller caster 4 includes a bracket 6 projecting obliquely rearward from the rear end of the base 1 and a roller 7 rotatably held on the bracket by an axis. The roller casters 4 are provided as a left and right pair. However, only one may be used. Instead of the roller 7, a rubber tire or the like may be used.

 The column 2 may be composed of a pair of left and right metal or synthetic resin pipes 8 arranged in parallel with each other. The pipe 8 may be a round pipe or a square pipe. Further, it may be a single pipe, a rod or a plate.

 The lower ends of the two pipes 8 are connected to each other by a plate 9, and the plate 9 is fixed to the base 1 by screws. The pipes 8 are connected to each other in the vicinity of the upper portion or in the middle by connecting pieces 10. The connecting piece 10 may also serve as a name plate. The pipe 8 constituting the support 2 extends straight upward from the lower end, extends obliquely forward from the middle, and extends straight up again. For this reason, the front surface (support surface) of the backrest 3 is arranged slightly forward from the base of the support 2.

The footrest 5 is composed of two plate-like levers 12 parallel to each other and a bar 13 extending in the left-right direction to connect the front ends of the levers 12. It is configured. It is preferable that the bar 13 projects laterally more than the lever 12. The base end of each lever 12 is rotatably connected to the inside of the pipe 8 of the column 2 by a pin 14 or the like. Thereby, the footrest 5 is rotatable between a folded state in which it stands up along the column 2 and a use state in which it projects forward. The bar 13 may be separated into left and right sides so that the left and right levers 12 and the bar 13 can be rotated independently. It is preferable that a frictional force is applied between the lever 12 and the pipe 8 or between the lever-12 and the shaft such that the lever 12 does not fall down by its own weight when the lever 12 is raised. Further, the footrest 5 may be constantly urged toward the folding side by a pulling panel screw recoil panel or the like. The members or panels that provide the frictional force are holding means for holding the footrest 5 in the storage direction.

A pair of support rods 16 projecting rearward in parallel with each other are fixed to the back side of the backrest 3. The support bars 16 are held by a U-shaped support member 1 Ί in plan view for holding the backrest 3 so that it can be adjusted back and forth. The support member 17 includes a handle 17a obtained by bending a pipe into a U-shape, and two height adjusting rods 17b extending parallel to each other below the handle 17a. The height adjusting rods 17 b are vertically movably accommodated in the upper end cavity of the pipe 8 of the column 2. The backrest 3 can be composed of a cylindrical bag body filled with cushioning material as in the past, but a support surface with a certain width to hold the waist on the front (Fig. 3) The symbol 3a) may be provided. As shown in FIG. 2A, in the present embodiment, a plurality of locking holes 18 are formed in the height adjusting rod 17b at intervals. A cylindrical housing 19 is fixed to the side surface of the pipe 8, and the housing 19 holds a rod 20 extending right and left in a direction perpendicular to the axis of the pipe so as to be able to protrude and retract. . The leading end 20 a of the rod 20 is fitted in the locking hole 18, and the mouth 20 is inserted into the housing 19 on the distal end side (the right side in FIG. 2), that is, in the housing 19. A spring 21 that urges to be retracted is housed. At the base end of rod 20, the mouth There is a knob 22 for pulling the door.

 Since the rod 20 is urged by the spring 21 in the retracting direction of the rod 20, the tip 20a of the rod 20 is fitted into the locking hole 18 in a normal state, and The height adjustment rod 17b and the backrest do not move up and down. To adjust the height, pull the knob 22 against the bias of the panel 21 as shown in Figure 2b. As a result, the tip 20a of the rod 20 is disengaged from the locking hole 18 so that the rod 20 can be freely raised or lowered. Then, when the knob 22 is released at an appropriate height, the tip 20a of the mouth is fitted into the locking hole 18 again. Thereby, the height of the backrest 3 can be changed stepwise with respect to the support 2.

 Further, the position adjustment mechanism in the front-rear direction by the support rod 16 and the support member 17 behind the backrest 3 can be configured in the same manner as the height adjustment mechanism described above. The pipe 18 is provided with a female screw or nut, and a male screw is screwed into the female screw to press the height adjusting rod 17b or to engage the locking groove formed in the height adjusting rod 17b. By combining them, the height adjustment mechanism of the backrest 3 can be configured. In addition, a ratchet mechanism is provided between the height adjusting rod 17b and the pipe 18 like a headrest height adjusting mechanism of a car, so that it can be lifted freely upwards and lowered down. Alternatively, the lock by the ratchet may be released by pressing the push button. The above-described height adjustment mechanism and front / rear position adjustment mechanism may be provided only on one side of the support rod 16 or the height adjustment rod 17b and the pipe 8, or may be provided on both sides.

As shown in FIG. 3, the user A stands on the base 1 and leans on the backrest 3 to use the support A such as the waist configured as described above. In this state, since the weight of the messenger M is added to the base 1, the column 2 does not fall. That is, since the strut 2 is fixed to the base 1, the backward force applied by the user M on the base 1 to the backrest 3 is, as a reaction force, the back of the user M's shoes and the base 1 Via frictional force between the base 1 Will be pushed forward. Therefore, both balance. In addition, the torque around the base for tilting the column 2 backward balances the force around the base for tilting the base 1 forward. Therefore, these forces balance as internal forces of the support A, such as the waist, so that unlike the case where an external force is applied to the upper end of the support 2, the support 2 attempts to fall the support 2 backward, or shifts backward. No attempt is made to do so. Therefore, the user M can take a rest posture with peace of mind. Alternatively, the backrest 3 can support the waist while standing.

If the height of the backrest 3 is lower or higher than the waist of the user, grasp the handle 17 a and pull up or lower the backrest 3 while pulling the knob 22. Also, if the hook rest 5 is tilted forward and one leg is applied, the waist and the like become easier, which is effective in reducing fatigue during standing work. If it is not needed, the hookrest 5 can be pivoted upward along the column 2 so that it is not in the way. When moving the support A such as the waist, as shown in Fig. 4, grasp the handle 17a on the back side of the backrest 3 and incline the support 2, and the roller cas 4 It touches 5 etc. and the base 1 rises. Therefore, the handle 17a can be easily moved by pulling it backward or forward. The casters may be omitted. If necessary, the base 1 or the support 2 can be fixed to the floor. FIG. 5A shows an embodiment of the swing mechanism 26 of the backrest 3. The swing mechanism 26 includes a support plate 27 provided on the front surface of the column 2 and a panel member 29 interposed between the base plate 28 of the knock rest 3. As shown in FIG. 5B, the panel member 29 has, for example, a cylindrical rubber body 30, annular annular washers 31 bonded to both ends thereof, and through holes 3 2 of the annular washers 31. And screws 33 whose heads are respectively engaged or fixed. As shown in Fig. 5b, one screw 33 is screwed into the female screw 28a provided on the substrate 28 of the backrest 3, and the other screw 33 is mounted on the support plate 27 of the support 2 as shown in Fig. 5b. Formed into The back rest 3 can be attached to the column 2 by passing through the through hole 34 and stopping with a nut 35 from the outside.

 By adopting the backrest swing mechanism 26 configured in this way, even if the user leans back and leans slightly to the left or right while the user is leaning, the backrest 3 It swings following the movement of the waist. Therefore, the waist and the backrest 3 are always fitted, so that the feeling of use is good and a stable resting posture can be maintained.

 The height adjusting rod 17 b shown in FIG. 5A is formed by a square pipe slidably accommodated in a square pipe 18 forming the column 2. In such a case, the height adjusting rod 17 b can be considered to be a part of the support 2 rather than a part of the backrest 3. The handle 1 Ίa is a bar that connects the upper ends of the height adjustment rods 17 b and is bent in a U-shape in plan view. It should be noted that other panel elements such as a coil panel may be employed instead of the rubber body 30. The support B such as the waist shown in FIG. 6 extends two pipes 8 constituting the support 2 straight up. A plurality of pipes or rods 40 are provided between the two pipes 8 in a ladder shape. These rods 40 are used to lock the seat 41 so that its height can be adjusted and that it can be detachably attached. The seat part 41 consists of a pair of left and right brackets 43 provided with downward hooks 42 at the rear end, a seat plate 44 fixed on those brackets, and a rear part of the bracket 43. A hook 45 is provided at the front lower side of the hook 42. The stopper 45 includes a bar 46 extending through the left and right brackets 43 and extending left and right, and a contact member 47 such as rubber fixed to the distal ends thereof. The seat 41 may be a seat of a conventionally known height-adjustable chair.

The seat portion 41 locks the hook 42 to the bar 40 of an appropriate height of the column 2, and abuts the contact member 47 of the flat collar 45 to the front surface of the column 2, whereby the column is supported. The height can be adjusted freely with respect to. If the seat portion 41 is not required, it can be removed from the column 2 and hooked on, for example, a handle 17a. In the support B such as the lumbar part in Fig. 6, a pair of height adjustment rods 17b extending downward below the backrest 3 are directly fixed, and the height adjustment rods 17b are attached to the upper part of the pipe 8 of the column. It is housed in the cavity so that it can move up and down, and a locking mechanism consisting of a rod 20 and a knob 22 similar to that of FIG. 2 is provided to make the height adjustable. The handle 17a is fixed so as to extend between the upper ends of the left and right pipes 8 constituting the support column 2.

 Further, in this embodiment, the footrest 5 is composed of a pipe 50 passed between the pipes 8 of the column 2 and left and right rods 51 housed in the pipe 50 so as to be freely retractable. When using the footrest 5, pull out the bar 51 left or right, and store it in the pipe 50 when unnecessary. Note that, without providing the bar 51, a fixed type hook consisting of a pipe or a bar passed between the pipes 8 of the column 2 or a bar protruding from the column in the direction of extension of the bar. You can also use a tress. Like the foldable footrest 5 shown in FIG. 1, such a footrest 5 can be used to rest the user's feet and waist during rest by resting one foot on the user.

 A support device C such as the waist shown in FIG. 7 has a buttocks support portion 54 that can lean the buttocks under the backrest 3. The buttocks support portion 54 may be provided integrally with the lower portion of the backrest 3 or may be separately attached to the support 2. When such a buttocks support portion 54 is provided, it is possible to take a more comfortable resting posture, and to lean during standing work, thereby reducing the fatigue of the worker.

The support D shown on the right side of FIG. 8 has a simple configuration in which the base 1 is made of a thin plate such as a steel plate and the support 2 is one. Further, a slit 56 having a width somewhat wider than the width of the column 2 is formed from the center of the front end of the base 1 to the vicinity of the base of the column 2. A height adjusting rod 17 b is attached to the upper end of the support 2 so that the height can be adjusted. A handle 17a is fixed to the upper end of the height adjusting rod 17b, and a backrest 3 is attached to the front end of the handle 17a. You. The casters and footrests are omitted.

 As shown on the left side of FIG. 8, the support D can be stacked (stacked) on the bases 1 by passing the support 2 of the other support D through the slit 56 of the base 1. As a result, many supports D can be efficiently stored in a small space in a state of being stacked in the front-rear direction.

 In the support tool E shown in FIG. 9, the backrest 3 is curved so that the center portion is depressed in plan view, and the lateral end portions 57 are further curved and project forward. Therefore, as shown by the imaginary line, the user M can be stably leaned against the backrest 3, and the front curved end 57 can be used as an armrest on which the elbow is placed.

 Further, in the support device E, the footrest 5 is formed in a C-shape having bent portions 58 at both ends, and the ends of the bent portions 58 are rotatably attached to the front side surface of the base 1. ing. Therefore, the user M can easily put the vicinity of the tip of the foot on the footrest. A groove 59 for accommodating the footrest 5 is provided on the upper surface of the base 1. Therefore, when the footrest 5 is not used, it can be stored without protruding from the surface of the base 1. Also in this embodiment, a panel for urging the footrest 5 toward the storage position side can be provided. In the support device E of FIG. 9, a triangular bracket 60 supporting the support 2 at the rear of the base 1 is further provided. The roller caster 4 is rotatably attached to the lower part of the rear end of the bracket 60. Therefore, the column 2 can be firmly attached to the base 1. The support 2 may be attached to the bracket 6 so as to be foldable forward. In this case, the height adjustment rod 17a can be lowered to the lowermost position, and then the support column 2 can be folded forward and stored in a small size.

In the support F shown in Fig. 1 ◦, the backrest 3 is composed of a vertically long plate that is curved in an S shape along the curved surface from the waist to the buttocks of the human body. You. Therefore, the lower part 61 of the backrest can be used as a hip support. The backrest 3 is preferably formed of a material having elasticity, particularly, synthetic resin or plywood.

 The support tool G shown in FIG. 11 has a support 41 which is substantially similar to the support tool B of FIG. Further, in the supporter G, a number of bumps 62 for giving an acupressure effect project from the front of the backrest 3. Further, a large number of bumps 63 that can give an acupressure effect to the foot are also provided on the upper surface of the base 1. It should be noted that one surface of the backrest 3 may be flat and the bump 61 may be provided on the other surface so that the user can select the backrest 3.

 Such bumps 62, 63 can be formed at the same time, for example, when the backrest 3 and the base 1 are formed of synthetic resin. In addition, the bumps 62 and 63 separately manufactured by an elastic body such as rubber can be embedded in the backrest 3 and the base 1 of a molded article such as a synthetic resin.

 When the user leans on the backrest 3 on the base 1 of the support G, the acupressure effect of the many bumps 6 2 and 6 3 can reduce back and foot fatigue and take a comfortable resting posture. it can.

 The support H shown in FIG. 12 has an L-shaped arm 66 attached to the side of the column 2 and a pull-out rod 67 at the front end of the arm 66. . The rod 67 is provided with a foldable table 68 that is rotatably provided so as to take a state of hanging downward and a state of stopping horizontally. Note that, instead of the table 68, other items used in a standing posture, such as a tool box and a work table, may be provided.

 Such a supporter H can complete a series of work with the supporter H alone, such as putting materials on a table 68 when addressing in a standing posture, or taking tools in and out of a tool box when standing up Work environment can be obtained.

The support member I shown in FIG. 13 has a pair of left and right second columns 70 on the outer side of the columns 2 and a horizontal bar 71 at the upper end thereof. Original strut 2 The second support 70 may be connected to the second support 70 by a connection bar 72. The horizontal bar 71 may be of a height-adjustable type.

 When the user hangs on the horizontal bar 71 when taking a break, the back is stretched, which is effective in reducing rest and fatigue, similarly to the so-called hanging health device.

 FIGS. 14A and 14B show different uses of the support J. FIG. FIG. 14A shows a use state in which the user M stands on the base 1 and leans the back on the backrest 3 as in FIG. In addition, the user places his or her feet on the footrest 5 provided at the lower part of the column 2 by bending the legs backward. On the other hand, in FIG. 14B, the user M stands toward the backrest 3 and can lean on the front side of the body such as the chest or abdomen against the backrest 3 or work or take a break. In this case, bend your legs forward and put your feet on the footrest 5.

 As described above, the support device such as the waist of the present invention can lean not only on the waist but also on the front side and the 橫 side of the user's body.

 In each of the above embodiments, the base 1 is not fixed to the floor, but it is also possible to fix the base 1 to the floor as necessary, for example, when installing on a factory line. Further, the column 2 can be directly fixed to the floor without providing the base 1.

Claims

Claim Hl. With a flat base on which the user can stand, a lower end fixed to the rear of the base, a post rising upward, and a backrest provided on top of the post. Supports such as the waist when standing.  2. The support device for a waist or the like according to claim 1, wherein the backrest is arranged at a position slightly forward of a position of a base portion of the column.  3. The support device according to claim 1, wherein the backrest is provided so as to be vertically adjustable with respect to a support.  4. The support device for a waist or the like according to claim 1, wherein a caster that is grounded when the base is tilted is attached above a rear end of the base.  5. The support device according to claim 1, wherein a footrest is provided below the support column.  6. The support device such as a waist portion according to claim 5, wherein the support device is foldable or telescopic so that the footrest force protrudes from a column and is accommodated along the column.  7. The support device according to claim 1, wherein the backrest is swingably attached to a support via a panel element.  8. The support device for a waist or the like according to claim 1, 2, 3, 4, 5, 6, or 7, further comprising a buttocks support portion capable of leaning the buttocks below the backrest.  9. The support device for a waist or the like according to claim 1, 2, 3, 4, 5, 6, 7 or 8, wherein a seat portion on which a hip can be placed is provided below the backrest.  10. The support device according to claim 1, wherein the support device is connected to the support and the base in a force-foldable manner. 11. The support device according to claim 1, wherein a slit is formed from the front end of the base to the vicinity of the base portion of the support column, through which the base portion of the support column of another support device passes. 12. The support device according to claim 1, wherein the left and right ends of the backrest are curved and project forward.  13. The support device according to claim 1, wherein a hook rest is provided on the base so as to be freely foldable.  14. The backrest or other support device according to claim 1, wherein the backrest force is bent in accordance with the curved shape of the back from the back of the human body.  15. The support device according to claim 1, wherein the backrest and / or the base are provided with a number of knobs for acupressure.  16. The support device according to claim 1, wherein a foldable table or a support base is connected to the support column.  17. The support device for a waist or the like according to claim 1, wherein a horizontal bar for hanging is provided above the backrest.  1 8. A support device such as a waist, which has a support that can be fixed to the floor and a backrest that can be adjusted to the height of the support.  19. The support device for a waist or the like according to claim 18, wherein a foldable footrest is provided below the support column.  20. The support device for a waist or the like according to claim 18, wherein a buttocks support device capable of leaning the buttocks is provided below the backrest.  21. The support device for a waist or the like according to claim 18, wherein a seat portion on which a waist can be attached is detachably provided below the backrest.  22. The support device according to claim 18, wherein the left and right ends of the backrest are curved and project forward.  23. The support device for a waist or the like according to claim 18, wherein the backrest cover is bent in accordance with the curved shape of the back of the human body and the buttocks.  24. The support device for a waist or the like according to claim 18, wherein the backrest is provided with a number of bumps for acupressure. 25. A collapsible table or support is connected to the support The support device for the waist or the like according to claim 18 (