TWI658821B - Posture-maintaining appliance - Google Patents

Abstract

The present invention provides a posture-retaining tool capable of surely supporting a thigh and a waist when a seated person is seated, and capable of maintaining the seated person in a correct posture. The posture holding tool includes a first support portion 23 which is a concave hip-shaped curved surface and can support a seated hip portion 42, and a front protruding portion 24 which is forward from the lower end of the first support portion 23 to the front. Protruding, can support the lower side of the thigh 43; the upper protruding portion 25 is located on the upper side of the first support portion 23, and is provided with a convexly curved waist support portion 28; the waist support portion is a bone disc that can support the waist 44 Part 151. First recessed portions 30 are formed on both sides of the joint portion of the upper protruding portion 25.

Description

Posture-maintaining appliance

The present invention relates to a posture-holding device that can be used as a seat placed on a chair and used to maintain the posture of a seated person in a correct state.

The structure of such a posture holding tool has been proposed in the past, for example, disclosed in Patent Document 1. In this conventional structure, the entire posture-retaining tool is integrally formed of a thick cushioning material such as a polyurethane foam. This posture holding tool is a seat portion having a substantial portion of the weight of a seated person, and a back portion extending upward from the rear end of the seat portion. "Prior Art Literature" "Patent Literature"

"Patent Document 1" Japanese Patent Publication No. 2011-254878.

[Questions to be solved by the invention]

In this known structure, although the hips of the occupant sink into the seat, the seat and the back are flat in the left-right direction, so it is difficult to stably support the waist or lower limbs of the occupant. As a result, it is difficult for the seated person to obtain a correct posture.

The present invention was made in view of the problems existing in the conventional technologies such as those described above, and an object thereof is to provide a posture holding tool capable of supporting a seated person in a proper and correct posture. [Methods for solving problems]

In order to achieve the above object, the posture-retaining device of the present invention includes a hip support portion capable of supporting a hip of a seated occupant, and a pair of waist support portions that can support both sides of a waist of a seated occupant from behind; and includes a hard plate.

With this structure, when the occupant is in the seated state, the posture-holding device can stably support the occupant without being deformed excessively, and the waist-supporting portion of the posture-holding device can appropriately support the occupant's waist . Accordingly, the posture of the seated person can be maintained in a correct posture. In other words, since the waist can be stably supported by both sides of the back bone, the occupant can obtain a good riding feeling, and maintain a natural posture with almost no feeling of fatigue or the like. In addition, since the posture-maintaining device is made of a hard-containing plate material, it is possible to reliably support the occupant and improve the effect of maintaining posture. In addition, if the posture of the seat occupant is not correct, since the posture holding device is hardly deformed, the seat occupant can immediately return to the correct posture. Next, since the correct posture is maintained, the muscles can be used to maintain the posture, and the muscle can be exercised. As a result, the correct posture can be naturally maintained without using a posture-retaining tool. [Effect of Invention]

By using the aforementioned posture holding tool, the effect of supporting the seated occupant and correcting his posture can be exerted.

Hereinafter, the posture holding tool according to the embodiment will be described with reference to the drawings. (First Embodiment)

First, a first embodiment will be described based on Figs. 1 to 12.

As shown in FIGS. 1 to 3, the posture-retaining tool 21 according to this embodiment is formed into a petal-like shape as a whole. The posture holding tool 21 is configured to include a body 22 (see FIGS. 4 and 5) formed of a plate made of a hard synthetic resin such as polypropylene. Here, the so-called hard synthetic resin refers to a foamed material or an unfoamed solid material and has a hardness capable of standing on its own without being deformed by its own weight. For example, it has a Rockwell hardness value of R50 to 110 Of hardness.

As shown in FIGS. 4 and 5, a concavely curved hip support portion 23 that supports the hips 42 of the occupant 41 is formed at the central portion in the front-rear direction of the posture holding tool 21. A front protruding portion 24 is formed on the lower side of the front portion on one end side of the posture holding tool 21 toward the front. An upper protruding portion 25 is formed on the upper side of the rear portion on the other end side of the posture holding tool 21. As shown in FIGS. 1 and 2, a pair of first recessed portions 30 are formed on the left and right side portions of the joint portion of the upper protruding portion 25 so that the upper protruding portion 25 can be flexed moderately in the backward tilt direction.

As shown in FIGS. 4 and 5, in order to stably support the buttocks 42 of the occupant 41 in the front-rear direction and the left-right direction, the upper surface of the hip-supporting portion 23 is formed into a curved shape in the front-rear direction and the left-right direction. As a whole, it is formed into a concave shape with a substantially spherical curved surface. The lower surface of the hip support portion 23 is also formed into a spherical curved surface. In addition, the lower surface of the buttock support part 23 and the front protrusion part 24 is a spherical curved surface shape formed continuously. As shown in FIGS. 1 and 3, a second recessed portion 26 is formed on the front side of the central portion of the front protruding portion 24. As shown in FIG. 6, in order to be able to support the lower limbs 45 of the occupant 41 in a nearly parallel and parallel state, the left and right sides of the front protrusion 24, that is, both sides of the second depression 26 are formed. A pair of left and right thigh support portions 27 bent in a concave shape when viewed from the front. The thigh support portions 27 are configured to support the thighs 43 so as to be covered by the lower sides thereof. In addition, since the thigh support portion 27 is formed in a concave curved shape, the degree of opening of the thigh 43 in the left-right direction can be regulated.

As shown in FIG. 2, FIG. 7, and FIG. 8, a pair of left and right waist support portions 28 are formed on the upper protruding portion 25. The upper portion 281 of the waist support portion 28 is convexly curved and the lower portion 282 is concave. Curved. In each lumbar support portion 28, a convexly curved upper portion 281 is formed so as to bulge obliquely forward and point forward inward. Therefore, as shown in FIG. 4 and FIG. 5, both sides of the bone disc 151 portion of the waist portion 44 of the occupant 41 can be pressed from the back to the inside and forward without the back bone 152. A third recessed portion 29 is formed between the pair of waist support portions 28.

As shown in FIG. 12, in the deep bottom of the first recessed portion 30, the thickness t1 of the edge portion 301 of the main body 22 in this portion is thicker than the thickness t2 of the other portions of the main body 22. That is, when the lumbar support portion 28 is flexed, the stress concentration acts on the edge portion 301 of the deep bottom portion of the first recessed portion 30 of the body 22. Therefore, there is a possibility that cracks may occur in the edge portion 301 and the vicinity thereof due to the stress. In this case, the crack or the like needs to be suppressed by increasing the thickness t1.

As shown in FIG. 2 and FIG. 7, a pair of feet 31 are protruded on both sides of the lower surface of the hip support portion 23 of the posture holding tool 21. Therefore, when the posture-retaining tool 21 is placed on an installation surface such as a seat portion of the chair 100, the posture-retaining tool 21 can be stably supported without slipping on the installation surface via the leg member 31. In particular, the foot piece 31 is used to regulate the movement of the posture holding tool 21 in the left-right direction, so that the upper body of the occupant 41 cannot easily tilt left-right.

As shown in FIG. 11, a cushioning material 32 formed of a continuous foamable polyurethane foam or the like is bonded to a surface on the seating side of the main body 22. The entirety of the posture holding tool 21 including the body 22 and the cushioning material 32 is covered with an exterior sheet 34. The exterior sheet 34 is composed of an outer skin sheet 341 and an inner and inner sheet 342 laminated on the inner surface of the skin sheet 341; the aforementioned skin sheet 341 is formed of woven or knitted fabric; the inner and inner sheet 342 is made of continuous It is made of an elastic material such as foamable EVA (ethylene-vinyl acetate copolymer resin).

As shown in FIG. 10, a plurality of first holes 33 are provided through the lower portion of the upper protruding portion 25 in the main body 22 at positions spaced from each other. Thereby, the moisture generated by sweating can be discharged through the first hole 33. When the cushioning material 32 is formed, as shown in FIG. 11, a part of the cushioning material 32 enters the first hole 33. By allowing a part of the cushioning material 32 to enter the first hole 33, it is possible to suppress the cushioning material 32 from peeling from the surface of the body 22 and to suppress the movement of the cushioning material 32 on the surface of the body 22.

A plurality of small holes 221 are formed in the entire body 22. Both the second hole 221 and the first hole 33 are objects for exhausting moisture generated by the seat occupant due to perspiration. In the second hole 221, a part of the buffer material 32 is also inserted into the second hole 221 when it is formed.

Next, the role of the posture holding tool 21 having the structure described above will be described.

For example, in the office, when the posture holding tool 21 is used while sitting on a chair for paperwork, the posture holding tool 21 is placed on the seat of the chair. In this state, as shown in FIGS. 4 to 6 and 9, when the occupant 41 sits on the posture holding tool 21, a spherical curved surface is formed below the position from the hip support portion 23 to the front protruding portion 24. Shape, the posture-retaining device 21 is slightly inclined forward due to the weight of the occupant 41. In this state, the buttocks 42 of the occupant 41 are supported on the spherically concave hip support 23. At this time, the degree of inclination of the hip support portion 23 in the left-right direction will be regulated by the left and right leg pieces 31. Therefore, the hip support portion 23 is in a relatively stable state in the left-right direction.

In this way, since the posture-retaining tool 21 leans forward slightly and the hips 42 of the occupant 41 also leans slightly forward, the pelvis 151 of the occupant 41 becomes upright. It is supported by the hip support part 23. In addition, since the pelvic disc 151 is upright and the back is naturally straightened, even if the posture holding tool 21 is tilted forward, the upper body of the seated person will not tilt forward. In addition, the two thighs 43 of the occupant 41 are supported by the concavely curved thigh support portions 27 on the front protruding portion 24 and are in a substantially parallel state. Thus, the lower limbs 45 of the seated person can be supported and brought into a state of being aligned.

Moreover, since the posture holding tool 21 is tilted forward so that one of the upper protruding portions 25 also moves forward toward the waist support portion 28, it will be supported as shown in Figs. The waist portion 44 of the occupant 41 surrounds the portion of the bone disc 151 including the sacrum. At this time, as shown in FIG. 8, both sides of the waist portion 44 are supported by the convexly curved upper portion 281 in the pair of waist support portions 28 of the upper protruding portion 25, and are squeezed from the back to the inside and forward. Thereby, the back of the occupant 41 can be stretched naturally, and it can be made into the state which can obtain a good riding feeling, and can maintain it in a correct posture. Therefore, the seated person 41 hardly feels fatigue, and can maintain a correct posture for a long time.

In this case, a pair of first recessed portions 30 are formed on both sides of the joint portion of the protruding portion 25 on the posture holding tool 21. Therefore, when the occupant 41 is seated and leans backward, the upper protruding portion 25 will be flexed backward in a moderately inclined direction due to the narrowed portion of the first recessed portion 30. Within this range, The seated person 41 is allowed to operate. In addition, when the occupant 41 is slightly fat or has a large body shape, the crowded feeling caused by the body shape is reduced by the first recessed portion 30, so that a comfortable riding feeling can be ensured. In other words, both sides of the joint portion of the upper protruding portion 25, that is, both sides between the open hip support portion 23 and the upper protruding portion 25, are developed by the first recessed portion 30, so that seating can be reduced. Of crowds.

In addition, this posture holding tool 21 can be used not only on the seat of a chair but also on the floor. That is, since the body 22 is made of a hard material, it can be used as a seat capable of maintaining a posture.

The posture holding tool 21 may be configured such that, for example, the front protrusion 24 is not provided. In this case, for example, the tip of the posture holding tool 21 becomes a position shown by a one-dot chain line 101 in FIG. 3. In the case of such a structure, for example, when it is placed on the floor and used as a seat, the lower limbs 45 are not restricted by the thigh support 27, so they can sit easily in a casual posture such as cross-seat, so the occupant 41 The degree of freedom of the lower limbs 45 is increased. However, since the lower limb 45 is not supported by the thigh support portion 27, the effect of maintaining the thigh 43 in a horizontal state is less obvious, but since it is used on the floor, there is almost no problem. In addition, the buttocks support portion 23 having the leg members 31 formed in the left-right direction can maintain the buttocks 42 in a nearly horizontal state. Therefore, even if the thigh support portion 27 is not provided, the buttocks 42 can be stably, naturally, and non-mandatoryly supported by the hip support portion 23 in the front-back direction and the left-right direction. The middle convexly curved upper portion 281 is supported by being squeezed from the rear toward the inside and forward, so that the upper body of the occupant 41 can be supported in a correct posture.

According to the embodiment described above, the following effects can be obtained.

(1) According to the above-mentioned embodiment, the buttocks support part 23 for supporting the buttocks 42 of the occupant 41 is formed in a concave curved shape in the front-rear direction and the left-right direction. Therefore, the hip support portion 23 can not only support the hips 42 in the front-back direction and the left-right direction in a stable, natural, and non-mandatory manner, but also increase the area supporting the hips 42 to disperse body pressure. Therefore, the seated person 41 can maintain the seated state in a state where it is substantially free from fatigue or discomfort.

(2) The two thighs 43 of the occupant 41 may be supported by the front protrusion 24 and the left and right thigh support portions 27 forming a concave curved shape, and are supported by the lower side stably and in a large area, so that the lower limbs 45 naturally align. In addition, since the thigh support portion 27 is concavely curved, the degree to which the two thighs 43 are opened to the left and right can be regulated. Therefore, as described above, it is possible to disperse the body pressure and maintain the seated state without feeling fatigue or the like, and to maintain the bone disc 151 of the seated person 41 in a horizontal state without tilting. Therefore, as shown in FIG. 5, the back bone 152 can be naturally made vertical in the left-right direction.

(3) The body 22 of the posture holding tool 21 is formed of a hard plate. Therefore, unlike the conventional structure of the posture holding tool 21 which is formed of a thick elastic material such as a cushioning material as a whole, this embodiment can reliably support the thighs 43 and the waist portion 44 so that the waist support portion 28 does not occur. The great elastic deformation caused by the thick elastic material mentioned above can further improve the effect of maintaining posture. Assuming that the posture of the seated person 41 is relaxed, since the posture holding tool 21 is hardly deformed, the seated person 41 can immediately return to the correct posture immediately. Furthermore, the posture-maintaining muscles can be exercised by maintaining the correct posture, and the muscles can be exercised. As a result, even when the posture-maintaining tool 21 is not used, the natural and correct posture can be maintained. In addition, the aforementioned conventional structure in which the entire posture-retaining tool is formed of a cushioning material, when the posture-retaining tool is placed on a chair, the seat surface is increased due to its thickness, and thus it is not easy to use. On the other hand, in this embodiment, since the body 22 is formed of a hard resin, the thickness of the posture-retaining tool 21 can be reduced, unlike the conventional structure. Therefore, the posture-retaining tool 21 is placed on a chair. When the 100 comes up, there is almost no problem.

(4) Since the hip support portion 23 to the front protruding portion 24 form a spherical curved surface with a large radius of curvature in the front and rear direction of the lower surface, the posture-retaining device 21 will be in a forward-inclined state when the occupant 41 is seated. . As a result, the pelvis 151 supporting the occupant 41 is supported and brought into an upright state, and the back of the occupant 41 becomes a naturally straight posture. In this state, the occupant 41 includes the lumbar support portion 28 of the upper protruding portion 25 on both sides of the back bone 152 in the waist portion 44 including the sacrum bone 151 on both sides of the back bone 152 and is pushed forward obliquely from the left and right sides It is supported in such a manner as to cover the waist 44.

Therefore, the lumbar vertebra portion of the occupant 41 is also squeezed forward, as shown in FIGS. 4 and 5, the hips 42 and two thighs 43 of the occupant 41 are stably supported, so the upper body of the occupant 41 is the back bone. 152 does not tilt to the left or right, but naturally becomes the ideal S-curve shape like the correct posture. In addition, the feet 31 can obtain stability in the left-right direction of the posture-retaining tool 21, can suppress the tilt of the upper body, and can obtain a correct posture. Therefore, even if the back bone 152 of the occupant 41 is skewed in the left-right direction, or even if there is a slight hump, the body can still support the correct posture, so that the upper body of the occupant 41 naturally stretches and Become an appropriate posture for a moderate right and left position.

According to this, the burden on the waist of the occupant 41 can be reduced, and the occupant 41 can stretch the back of the sacrum while maintaining the correct posture naturally, even if sitting for a long time. The burden on the lower limbs 45 can reduce fatigue. In addition, although the back bone 152 or the lumbar spine of the occupant 41 can be directly pressed forward without using the posture-retaining tool 21, the back sacrum can be extended by this, but in this case, the occupant 41 will feel pain. Or it ’s uncomfortable, so it ’s difficult to stay seated for a long time. In addition, even if the waist 44 of the occupant 41 leans forward, the waist 44 is supported by the waist support 28 so as to cover the pelvis 151 or the back bone 152, which can reduce the burden on the waist 44 And be able to relax.

(5) Since the lower surfaces of the hip support portion 23 and the front protruding portion 24 also form a spherical curved surface with a large radius of curvature in the left-right direction, the posture holding tool 21 can be allowed to tilt and move to the left-and-right direction to some extent. Therefore, the seat occupant 41 can lean the upper body to the left and right without effort, and avoid the feeling of congestion.

(6) In the posture holding tool 21, leg members 31 are protruded on both sides of the lower surface of the hip support portion 23. Therefore, the posture holding tool 21 can be placed in a stable state. For example, when it is placed on the seat of the chair 100, it is possible to suppress the occurrence of sliding and excessive tilting in the left-right direction.

(7) First recessed portions 30 are formed on both sides of the joint portion of the upper protruding portion 25. Therefore, even if the body 22 of the posture-retaining tool 21 is made of a hard synthetic resin, when the occupant 41 is seated on the hip support portion 23, the upper protruding portion 25 applies a backward tilting load to the upper projection 25 due to the back tilt In this case, the upper protruding portion 25 can be flexed. Therefore, it is helpful to maintain the correct posture of the seated person 41, and it is less likely to cause fatigue. In other words, since the body 22 of the posture-retaining tool 21 is formed of a hard synthetic resin, the posture-retaining tool 21 has rigidity and rigidity, and although the shape change is small, the deformation of a desired portion can be ensured. Therefore, the original function of the posture holding tool 21 can be effectively exerted, and it can also contribute to naturally maintaining a relaxed posture.

(8) In addition to the above, since the hip support portion 23 is formed in a concave spherical curved surface shape, the joint portion of the upper protruding portion 25 extending continuously from the hip support portion 23 upward is also the hip support portion 23 Similarly, it is formed into a concave spherical curved surface shape. Therefore, unlike the present embodiment, when the first recessed portion 30 is not formed, although the upper protruding portion 25 is formed in a shape that is hard and difficult to flex backward, in this embodiment, as described above, Since the first recessed portions 30 are formed on both sides of the joint portion of the upper protruding portion 25, the difficulty of bending can be released, and the upper protruding portion 25 can be appropriately operated in accordance with the body movement of the seated person 41.

(9) Since the first recessed portion 30 is formed on both sides of the joint portion of the upper protruding portion 25, and this portion is opened, the crowded feeling of the occupant 41 can be suppressed. In contrast, when the recessed portion 30 is not formed, and when the seat 41 is relatively large, the hips may abut the portion, so that a crowded feeling may be felt in this case.

(10) By forming the first recessed portion 30, the second recessed portion 26, and the third recessed portion 29, the purpose of reducing the overall weight of the posture holding tool 21 can be achieved.

(11) As described above, the third recessed portion 29 is formed between the lumbar support portions 28. Therefore, in a case where the seated person 41 is bent backwards or the entire back is leaned back, it is possible to avoid the back bone portion of the seated person 41 from touching the upper protruding portion 25. Therefore, it is possible to avoid the unpleasant feeling in such a case.

(12) The depressions are formed at four positions by the first depressions 30, the second depressions 26, and the third depressions 29. Therefore, the posture holding tool 21 is made to have a petal shape as a whole, and an article with excellent design is formed.

(13) The thickness of the edge portion 301 of the first recessed portion 30 is thicker than other portions. Therefore, even if a large stress is applied to the first recessed portion 30 due to the deformation caused by the tilting action of the upper protruding portion 25, the edge portion 301 of the first recessed portion 30 may be damaged. Suppressed to a minimum.

(14) A cushioning material 32 is provided on the seat-side surface of the main body 22. Therefore, by the elastic effect and the cushioning effect of the cushioning material 32, a good riding feeling can be ensured.

(15) The whole is covered with the exterior sheet 34. Therefore, the beauty of the entire outer periphery of the posture holding tool 21 can be maintained.

(Second Embodiment)

Next, a second embodiment of the present invention will be described based on FIG. 13. It should be noted that the second embodiment, the subsequent embodiments, and the modification examples will be described focusing on portions different from the first embodiment.

As shown in FIG. 13, in the second embodiment, the first hole 33 and the second hole 221 of the main body 22 as in the first embodiment are not provided. Therefore, in the second embodiment, the main body 22 can be easily formed.

(Third Embodiment)

Next, a third embodiment of the present invention will be described based on Figs. 14 to 18.

Compared with the first embodiment described above, the second recessed portion 26 and the third recessed portion 29 in this embodiment are formed so that the degree of recessing is relatively shallow.

In addition, on the seating surface side of the main body 22 formed of a hard material such as polypropylene, a single-layer exterior sheet 51 formed of EVA is bonded using an elastomer-based adhesive. As shown in FIG. 16 and FIG. 18, a folded-back portion 511 is formed on the peripheral edge portion of the exterior sheet 51, and the exterior sheet 51 is joined to the seat of the body 22 in a state where the folded-back portion 511 is inserted into the peripheral edge portion of the body 22. Side face. The back and bottom of the body 22 are exposed. The exterior sheet 51 is made of a porous material having flexibility and elasticity and having air permeability.

A plurality of holes 52 are formed in the upper protruding portion 25. As shown in FIG. 18, each hole 52 is composed of a hole 521 of the body 22 and a hole 522 of the exterior sheet 51. The hole 522 of the exterior sheet 51 is formed smaller than the hole 521 of the body 22. Therefore, the inner peripheral edge of the hole 522 of the exterior sheet 51 protrudes from the inner peripheral edge of the hole 521 of the body 22 and protrudes from the center side of the hole, and is configured so that the inner peripheral edge of the hole 521 of the body 22 does not abut the seat 41 .

As shown in FIG. 15, the bottom surface of the front protrusion 25 and the lower end of the leg member 31 are a plurality of anti-slip members 53 formed of a material with a high friction coefficient.

The third embodiment has the following effects.

(16) Since the posture holding tool 21 is configured to cover the seating surface side of the main body 22 with a single-layer exterior sheet 51, the number of components can be reduced, and its structure is also simple. In addition, since the back surface and the lower surface of the main body 22 are exposed, the exterior sheet 51 can also be a smaller size, and in addition, the exterior sheet 51 can be easily covered on the main body 22. Therefore, the posture holding tool 21 can be manufactured at a relatively low price. (Change example)

In addition, this embodiment can be modified as described below and embodied.・ In addition to the shape of a spherical curved surface, the hip support part 23 of the posture holding tool 21 may be formed into a flat or cylindrical concave shape, a concave curved shape, or the like. In this case, the effect of the hip support portion 23 stably supporting the hip 42 in the front-rear direction and the left-right direction is less significant. However, since the thigh 43 is restricted by the thigh support portion 27 having a concave curved shape in the left-right direction, the buttocks 42 are also affected by this kind of influence and can assume a stable state. Thereby, the occupant 41 can be supported to maintain the bone disc 151 in a horizontal state, and press and support both sides of the waist portion 44 from the back to the inside and the front through the waist support portion 28. As described above, even if the hip support portion 23 of the posture holding tool 21 is formed in a shape other than a spherical curved surface shape, it can still support the occupant 41 in a correct posture. -A cushioning material 32 is provided on both the seating side and the opposite side of the body 22.・ The buffer material 32 is omitted.・ The exterior sheet 34 is omitted. -The two members of the cushioning material 32 and the exterior sheet 34 are omitted. That is, the posture holding tool 21 includes only the main body 22.・ Omit the foot 31 of the lower surface of the posture holding tool 21, and make the lower surface flat. -The first recessed portion 30 of the joint portion of the lumbar support portion 28 is provided on only one of the left and right sides. -Except for the first recessed portion 30, no other recessed portion is formed. When the third recessed portion 29 is not formed, although the pair of lumbar support portions 28 form a continuous single part in appearance, since the lumbar support portions 28 protrude forward, the central continuous portion does not abut against The back bone 152 or both sides thereof can press both sides of the waist portion 44, so there are essentially a pair.・ Hip support part 23 is formed so that it may become linear in the front-back direction or the single direction of left-right direction. -The main body 22 is made of FRP (glass fiber reinforced resin) made of glass fiber reinforced resin.

21‧‧‧ Posture holding tools

22‧‧‧ Ontology

23‧‧‧ hip support, first support

24‧‧‧ front protrusion

25‧‧‧upper projection

26‧‧‧ 2nd depression

27‧‧‧ thigh support

28‧‧‧ waist support

29‧‧‧ 3rd depression

30‧‧‧ the first depression

301‧‧‧Edge

31‧‧‧footware

32‧‧‧ buffer material

34‧‧‧ Exterior film

41‧‧‧ Seat

42‧‧‧ hip

43‧‧‧ thigh

44‧‧‧ waist

45‧‧‧ lower limb

51‧‧‧ Exterior film

52‧‧‧hole

53‧‧‧Slipstop

100‧‧‧ chair

151‧‧‧ Bone Disc

152‧‧‧Backbone

t1‧‧‧Thickness of edge

t2‧‧‧thickness of other parts

FIG. 1 is a perspective view of the posture-retaining tool according to the first embodiment. FIG. 2 is a front view of the posture maintaining tool of FIG. 1. FIG. 3 is a plan view of the posture retaining tool of FIG. 1. FIG. 4 is a side cross-sectional view of the human skeleton at the position of line 4-4 in FIG. 2 and the use state. FIG. 5 is a front cross-sectional view showing the position of the buttocks support portion in the use state. FIG. 6 is a front sectional view showing a position of the thigh support portion in a use state. Fig. 7 is a sectional view taken along line 7-7 in Fig. 2. Fig. 8 is a sectional view taken along line 8-8 in Fig. 2. FIG. 9 is a view showing a state of use when viewed obliquely from the rear. Fig. 10 is a front view of the main body. Fig. 11 is a cross-sectional view showing a laminated structure of the posture-retaining device. FIG. 12 is a cross-sectional view taken along line 12-12 of FIG. 10. FIG. Fig. 13 is a front view of a main body of the second embodiment. Fig. 14 is a perspective view showing a posture holding tool according to a third embodiment. Fig. 15 is a perspective view of the posture-retaining tool of Fig. 14 as viewed from the back side. FIG. 16 is an exploded perspective view of the posture holding tool of FIG. 14. FIG. 17 is a front view of the posture retaining tool of FIG. 14. FIG. 18 is an enlarged sectional view taken along line 18-18 in FIG. 17.

Claims (9)

A posture maintaining tool, comprising a body formed of a rigid plate, the body including a hip support portion capable of supporting a seat of a seated occupant, and a pair of waist portions capable of supporting both sides of a seated portion of a seat of a seated rear A support portion; a first recessed portion is formed on both sides of the joint portion of the waist support portion; The posture holding tool according to claim 1, wherein the hip support portion is formed in a concave shape and includes a concave thigh support portion located below the front portion of the waist support portion and capable of supporting both thighs of the seated person from the lower side. The posture-retaining tool according to claim 1, wherein the lumbar support portion is formed in a bulging shape that points forward inward. The posture holding tool according to any one of claims 1 to 3, wherein the hip support portion is formed into a spherical curved surface shape. The posture-retaining tool according to any one of claims 1 to 3, wherein feet are protrudingly provided on both sides of the lower surface of the hip support portion. A posture maintaining tool, comprising a body formed of a hard plate, the body is provided with a hip support portion that can support a seated hip, and a concave thigh support portion that supports from the hip One end of the part protrudes and can support the lower sides of the two thighs; and a pair of waist support parts, which are located on the other end side of the hip support part, and can support both sides of the waist from the rear; A first recessed portion is formed on both side portions of. The posture maintaining tool according to claim 6, wherein a third recessed portion is formed between the two waist support portions. The posture maintaining tool according to claim 6, further comprising a second recessed portion formed between the two thigh support portions and a third recessed portion formed between the two waist support portions. The posture maintaining tool according to any one of claims 1 to 3, 6, and 8, wherein the waist support portion and the hip support portion are integrally formed.