TW201526885A - Posture holder - Google Patents

Abstract

A posture holder comprising: a recessed, spherical curved surface-shaped first support section (23) capable of supporting seated buttocks (42); a front protruding section (24) protruding towards the front from the bottom end of the first support section (23) and capable of supporting the lower side of thighs (43); and an upper protruding section (25) positioned on the upper side of the first support section (23) and comprising a protruding curve-shaped hip support section (28) capable of supporting the ilium (151) section of the waist (44). First cut-out sections (30) are formed on both sides of a base section of the upper protruding section (25).

Description

Posture holder

The present invention relates to a posture holding tool that can be used to hold a seated person's posture in an accurate state by being placed on, for example, a seat portion of a chair.

The structure of such a posture holding tool has been proposed in the past, for example, as disclosed in Patent Document 1. In the conventional configuration, the entire posture maintaining tool is integrally formed of a thick cushioning material such as a polyurethane foam. The posture holding tool is a seat portion that supports the majority of the weight of the occupant, and a back portion that extends upward from the rear end of the seat portion. "Previous Technical Literature" "Patent Literature"

Patent Document 1 Japanese Patent Laid-Open Publication No. 2011-254878.

[Problems to be solved by the invention]

In this conventional configuration, although the buttocks of the occupant sink into the seat, since the seat and the back are formed in a flat shape in the left-right direction, it is difficult to stably support the waist or the lower limb of the occupant. As a result, it is difficult for the occupant to get the correct posture.

The present invention has been made in view of the problems existing in the prior art as described above, and it is an object of the invention to provide a posture holding tool capable of supporting a occupant in a posture in which the posture is appropriate and correct. [Method for solving the problem]

In order to achieve the above object, a posture holding tool according to the present invention includes a buttock support portion that can support a hip of a occupant, and a pair of lumbar support portions that can support both sides of the waist of the occupant at the rear, and includes a hard plate material.

With this configuration, when the occupant is seated, the posture holding tool can stably support the occupant without excessive deformation, and can appropriately support the occupant's waist by the lumbar support portion of the posture holding tool. . According to this, the posture of the occupant can be maintained in the 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 feeling of riding, and can hardly feel a feeling of fatigue or the like while maintaining a natural posture. Further, since the posture holding tool is formed of a hard plate material, the occupant can be reliably supported, and the effect of maintaining the posture can be improved. Further, in the case where the occupant's posture is not correct, since the posture holding tool is hardly deformed, the occupant can immediately return to the correct posture. Then, since the posture is maintained by using the muscle to maintain the posture, the muscle can be exercised, and as a result, the posture can be naturally maintained without using the posture holding tool. [Effects of the Invention]

By using the above-described posture holding tool, it is possible to exert an effect of supporting the occupant and correcting the posture thereof.

Hereinafter, the posture holding tool of the embodiment will be described based on the drawings. (First embodiment)

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

As shown in FIGS. 1 to 3, the posture holding tool 21 of the present embodiment is formed in a shape similar to a petal as a whole. The posture holding tool 21 is configured to include a main body 22 formed of a plate made of a hard synthetic resin such as polypropylene (see FIGS. 4 and 5). Here, the term "hard synthetic resin" means a foamed material or an unfoamed solid material, and has a self-standing hardness that is not deformed by its own weight, for example, has a Rockwell hardness value of R50 to 110. Hardness.

As shown in FIG. 4 and FIG. 5, a concave curved buttock support portion 23 that supports the buttocks 42 of the occupant 41 is formed in the central portion in the rear direction of the posture holding tool 21. On the lower side of the front portion on the one end side of the posture holding tool 21, a front protruding portion 24 facing forward is formed forward. On the upper side of the rear portion on the other end side of the posture holding tool 21, an upper protruding portion 25 that faces upward is formed. As shown in FIG. 1 and FIG. 2, a pair of first recessed portions 30 are formed in the left and right side portions of the joint portion of the upper protruding portion 25 so as to be appropriately deflected in the backward tilting direction of the upper protruding portion 25.

As shown in FIG. 4 and FIG. 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 buttocks support portion 23 is formed in 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 slightly spherical curved surface. The lower surface of the buttock support portion 23 is also formed in a spherical curved shape. Further, the lower surface of the buttock support portion 23 and the front protruding portion 24 are formed in a spherical curved shape continuously formed. 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 support the lower limbs 45 of the occupant 41 in a state of being nearly flush and parallel, the left and right sides of the front protruding portion 24, that is, on both sides of the second recessed portion 26 are formed. A pair of right and left thigh support portions 27 that are curved in a concave shape are observed from the front. The thigh support portions 27 are configured to support the thighs 43 so as to be covered by the lower side thereof. Further, since the thigh support portion 27 is formed in a concave curved shape, the degree to which the thigh 43 is opened in the left-right direction can be regulated.

As shown in FIG. 2, FIG. 7, and FIG. 8, a pair of left and right lumbar support portions 28 are formed in the upper protruding portion 25, and the upper portion 281 of the lumbar support portion 28 has a convex curved shape and the lower portion 282 has a concave shape. Curved shape. In each of the lumbar support portions 28, the convexly curved upper portion 281 is formed so as to bulge obliquely forward and to point toward the inner front side. Therefore, as shown in FIG. 4 and FIG. 5, both sides of the portion of the pelvis 151 of the waist portion 44 of the occupant 41 can be pressed from the rear to the inner side by avoiding the back bone 152. A third recessed portion 29 is formed between the pair of lumbar support portions 28.

As shown in FIG. 12, in the deep bottom portion of the first recessed portion 30, the thickness t1 of the edge portion 301 of the body 22 of the portion is thicker than the thickness t2 of the other portion of the 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 recess portion 30 of the body 22. Therefore, there is a possibility that cracks or the like 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 FIGS. 2 and 7, a pair of leg members 31 are protruded from both sides of the lower surface of the buttock support portion 23 of the posture holding tool 21. Therefore, when the posture holding tool 21 is placed on the installation surface such as the seat portion of the chair 100, the posture holding tool 21 can be stably supported by the leg member 31 without sliding on the installation surface. In particular, the leg member 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 is not easily tilted left and right.

As shown in Fig. 11, a cushioning material 32 formed of a continuous foamable polyurethane foam or the like is bonded to the surface of the main body 22 on the seating side. The exterior sheet 34 is covered on the entire posture holding tool 21 including the main body 22 and the cushioning material 32. The exterior sheet 34 is composed of an outer skin sheet 341 and an inner inner sheet 342 laminated on the inner side of the skin sheet 341. The skin sheet 341 is formed of a woven fabric or a braid; the inner lining 342 is continuous. It is formed 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 formed in the lower portion of the upper protruding portion 25 of the main body 22 so as to be spaced apart from each other. Thereby, moisture generated by sweating can be discharged through the first hole 33. Further, 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 peeling of the cushioning material 32 from the surface of the main body 22 and to suppress the movement of the cushioning material 32 on the surface of the main body 22.

On the entirety of the body 22, a second hole 221 having a plurality of small holes is formed. Both the second hole 221 and the first hole 33 are for discharging an object for moisture generated by the occupant due to sweating. In the second hole 221, a part of the cushioning material 32 is also entered as it is formed.

Next, the action of the posture holding tool 21 having the configuration described above will be described.

For example, in the office, when sitting on a chair and performing a paperwork, the posture holding tool 21 is placed on the seat of the chair when the posture holding tool 21 is used. 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 from the position from the buttock support portion 23 to the front protruding portion 24. In the shape, the posture holding tool 21 is slightly tilted forward due to the weight of the occupant 41. In this state, the buttocks 42 of the occupant 41 are supported by the spherical support portion 23 having a spherical shape. At this time, the degree of inclination of the buttocks support portion 23 in the left-right direction is restricted by the left and right leg members 31, and therefore the buttocks support portion 23 is in a state of being relatively stable in the left-right direction.

In this way, since the posture holding tool 21 is slightly tilted forward and the buttocks 42 of the occupant 41 are slightly tilted forward, the pelvis 151 of the occupant 41 is in an upright state, and in this state, the buttocks 42 of the occupant 41 are It is supported on the buttock support portion 23. Further, since the back plate 151 is upright and the back is in a state of being naturally straightened, even if the posture holding tool 21 is tilted forward, the upper body of the occupant does not lean forward. Further, the two thighs 43 of the occupant 41 are supported by the concavely curved thigh support portion 27 on the front protruding portion 24 to be approximately parallel. Thereby, the lower limbs 45 of the occupant can be supported and brought into a state of being aligned.

Further, since the posture holding tool 21 is tilted forward so that one of the upper protruding portions 25 also moves forward toward the waist supporting portion 28, it is supported as shown in Figs. 3 and 4, and becomes like a left and right. The portion of the pelvis 151 that contains the tibia is enclosed in the waist 44 of the occupant 41. At this time, as shown in FIG. 8, both sides of the waist portion 44 are the upper portion 281 which is convexly curved in the waist supporting portion 28 by one of the upper protruding portions 25, and is supported by the rear side inward and forward pressing. Thereby, the back of the occupant 41 can be naturally extended, and in a state in which a good feeling of riding can be obtained, the state can be maintained in a correct posture. Therefore, the occupant 41 hardly feels fatigue, and thus can maintain the 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 of the posture holding tool 21. Therefore, when the occupant 41 is seated and is to be rearward, the upper protruding portion 25 is appropriately deflected in the backward tilting direction due to the first recessed portion 30, and within this range, The occupant 41 is allowed to operate. In addition, when the occupant 41 is slightly fat or has a large body size, the feeling of crowding caused by the body shape is reduced by the first recessed portion 30, so that a comfortable ride feeling can be ensured. In other words, both side portions of the joint portion of the upper protruding portion 25, that is, both side portions between the open buttocks support portion 23 and the upper projecting portion 25 are developed by the first recessed portion 30, so that the seat can be reduced The crowded feeling.

Further, the posture holding tool 21 can be used not only on the seat portion of the chair but also on the floor. That is, since the main body 22 is made of a hard material, it can be used as a seat that can maintain a posture.

The posture holding tool 21 may be configured such that, for example, the front protruding portion 24 is not provided. In this case, for example, the front end of the posture holding tool 21 is at a position indicated by a one-dot chain line 101 in FIG. In the case of such a configuration, for example, when the seat is placed on the floor and used as a seat, since the lower limb 45 is not restricted by the thigh support portion 27, it can be easily seated in a random posture such as sitting, 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 noticeable, but since it is used on the floor, there is almost no problem. Furthermore, the buttocks 42 can be maintained in a nearly horizontal state by the buttocks support portion 23 having the leg members 31 formed in the right and left direction. Therefore, even when the thigh support portion 27 is not provided, the buttocks 42 can be stably, naturally, and non-manually supported by the buttock support portion 23 in the front-rear direction and the left-right direction, since the waist portions 44 are supported by the lumbar support portions 28 on both sides. The upper portion 281 of the convex curved shape is supported by the front side from the rear side, so that the upper body of the occupant 41 can be supported in the correct posture.

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

(1) According to the above embodiment, the buttock support portion 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 buttocks support portion 23 can support the buttocks 42 in the front-rear direction and the left-right direction in a stable, natural, and non-mandatory manner, and can increase the area of the buttocks 42 to disperse the body pressure. Therefore, the occupant 41 can maintain the seated state in a state where it does not substantially feel fatigue or discomfort.

(2) The two thighs 43 of the occupant 41 can be formed into a concavely curved left and right thigh support portions 27 by the front projections 24, and are stably supported by the lower side in a large area, so that the lower limbs 45 are naturally aligned. In addition, since the thigh support portion 27 has a concave curved shape, the degree to which the two thighs 43 are opened to the left and right can be regulated. Therefore, in the same manner as described above, the body pressure can be dispersed, and the seated state can be maintained in a state in which fatigue is not felt, and the bone plate 151 of the occupant 41 can be maintained in a horizontal state without being inclined. Therefore, the back bone 152 can be naturally vertical in the left-right direction as shown in FIG.

(3) The body 22 of the posture holding tool 21 is formed of a hard plate material. Therefore, unlike the conventional structure in which the posture maintaining tool 21 is formed of a thick elastic material such as a cushioning material as a whole, the present embodiment can reliably support the thigh 43 and the waist portion 44 so that it does not occur in the lumbar support portion 28. The elastic deformation caused by the thick elastic material described above can further improve the effect of maintaining the posture. It is assumed that in the case where the occupant 41 is in a relaxed posture, since the posture holding tool 21 is hardly deformed, the occupant 41 can immediately return to the correct posture. Further, by using the muscle that maintains the posture while maintaining the correct posture, the muscle can be exercised, and as a result, even if the posture holding tool 21 is not used, the natural and correct posture can be maintained. Further, the above-described conventional structure in which the entire posture maintaining tool is formed by the cushioning material is difficult to use because the posture holding tool is placed on the chair and the seat surface is raised due to the thickness thereof. On the other hand, in the present embodiment, since the main body 22 is formed of a hard resin, the thickness of the posture holding tool 21 can be made thinner than the conventional structure, so that the posture holding tool 21 is placed on the chair. When used up to 100, there is almost no problem.

(4) Since the hip support portion 23 to the front projection portion 24 are formed in a spherical curved shape having a large curvature radius in the front and rear directions, the posture holding tool 21 will be in the forward tilt state in the seated state of the occupant 41. . Therefore, the bone disk 151 supporting the occupant 41 is supported and is in an upright state, and the back of the occupant 41 is naturally stretched. The occupant 41 is in this state, and the portion including the humeral pelvis 151 on both sides of the back bone 152 in the waist portion 44 is the waist support portion 28 of the upper protruding portion 25, and is pressed forward from the left and right sides obliquely rearward. The way is supported and supported in such a way as to cover the waist 44.

Therefore, the lumbar portion of the occupant 41 is also pressed forward. As shown in FIGS. 4 and 5, the buttocks 42 and the two thighs 43 of the occupant 41 are stably supported, so that the upper body of the occupant 41, that is, the back bone 152 does not tilt left and right, but naturally becomes an ideal S-curve shape like a correct posture. Moreover, the stability of the posture holding tool 21 in the left-right direction can be obtained by the leg member 31, and the inclination of the upper body can be suppressed, and the correct posture can be obtained. Therefore, even if the back bone 152 of the occupant 41 is assumed to be skewed in the left-right direction, or even if there is a slight hunchback, the body can be supported in the correct posture, so that the upper body of the occupant 41 naturally extends. Become an appropriate posture in a moderately right or left state.

Accordingly, the burden on the waist of the occupant 41 can be reduced, and the occupant 41 can also stretch the back tibia while maintaining the correct posture while relaxing, and can reduce the waist 44 and the sitting 44 for a long time. The burden on the lower limbs 45 can reduce fatigue. Further, although the back bone 152 or the lumbar vertebra of the occupant 41 is directly pressed forward without using the posture holding tool 21, the back humerus can be stretched by this, but in this case, the occupant 41 feels pain. Or uncomfortable, so it is difficult to maintain a long-term seating status. Further, even if the waist portion 44 of the occupant 41 has a forwardly bent pelvis leaning forward, the waist portion 44 is supported by the lumbar support portion 28 so as to cover the pelvis 151 or the back bone 152, and the burden on the waist portion 44 can be alleviated. And can relax.

(5) Since the buttocks support portion 23 and the lower surface of the front protruding portion 24 are also formed in a spherical curved shape having a large radius of curvature in the left-right direction, the posture holding tool 21 can be allowed to tilt to the left and right direction to some extent. Thereby, the occupant 41 can tilt the upper body left and right without difficulty, and avoid the feeling of being crowded.

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

(7) The first recessed portion 30 is formed on both side portions of the joint portion of the upper protruding portion 25. Therefore, even if the main body 22 of the posture holding tool 21 is formed of a hard synthetic resin, in a state in which the occupant 41 is seated on the buttocks support portion 23, the upper protruding portion 25 is biased in the backward tilting direction by the reclining. In other cases, the upper projection 25 can also be flexed. Therefore, it will help to maintain the correct posture of the occupant 41 and the feeling of fatigue. In other words, since the main body 22 of the posture holding tool 21 is formed of a hard synthetic resin, the posture holding tool 21 has rigidity and hardness, and although the shape change is small, the deformation of the desired portion can be ensured. Therefore, the original function of the posture holding tool 21 can be effectively exhibited, and it is also possible to contribute to the posture in which the relaxed state is naturally maintained.

(8) In addition to the above, since the buttock support portion 23 is formed in a concave spherical curved shape, the joint portion of the upper protruding portion 25 that continuously extends upward from the buttock support portion 23 is also the buttock support portion 23. Similarly, it is formed into a concave spherical curved shape. Therefore, unlike the present embodiment, when the first recessed portion 30 is not formed, the upper protruding portion 25 has a shape that is hard and hard to be bent rearward. However, in the present embodiment, as described above, Since the first recessed portion 30 is formed on both side portions of the joint portion of the upper protruding portion 25, the difficulty of the deflection can be released, and the upper protruding portion 25 can be appropriately operated in response to the body movement of the occupant 41.

(9) Since the first recessed portion 30 is formed on both sides of the joint portion of the upper projecting portion 25, the portion is opened, and the feeling of crowding of the occupant 41 can be suppressed. On the other hand, in the case where the recessed portion 30 is not formed, when the occupant 41 has a large body shape, the buttocks abut against the portion, so that a feeling of crowding is felt in this case.

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

(11) As described above, the third recessed portion 29 is formed between the lumbar support portions 28. Therefore, in the case where the occupant 41 is bent backward, or when the back is entirely back, it is possible to prevent the back bone portion of the occupant 41 from touching the upper protruding portion 25. Thereby, the unpleasant feeling of such a situation can be avoided.

(12) The depressed portion is formed at four positions by the first depressed portion 30, the second depressed portion 26, and the third depressed portion 29. Therefore, the posture holding tool 21 as a whole exhibits a petal shape, and an article having excellent design is formed.

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

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

(15) The whole is covered by the exterior sheet 34. Therefore, the beauty of the posture holding tool 21 as a whole can be maintained. (Second embodiment)

Next, a second embodiment of the present invention will be described based on Fig. 13 . In addition, the second embodiment, the subsequent embodiments, and the modified 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 in the first embodiment are not provided. Therefore, in the second embodiment, the molding of the main body 22 can be easily performed. (Third embodiment)

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

In contrast to the first embodiment, the second recessed portion 26 and the third recessed portion 29 in the present embodiment are formed to be shallower in degree of depression.

Further, on the seating surface side of the main body 22 formed of a hard material such as polypropylene, a single-layer outer sheet 51 formed of EVA is joined using an adhesive of an elastomer series. As shown in FIG. 16 and FIG. 18, the folded portion 511 is formed on the peripheral edge portion of the exterior sheet 51, and the outer sheet 51 is joined to the body 22 in a state where the folded portion 511 is fitted into the peripheral edge portion of the body 22. Side of the side. 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 gas permeability.

A plurality of holes 52 are formed in the upper protruding portion 25. As shown in FIG. 18, each of the holes 52 is formed by a hole 521 of the main body 22 and a hole 522 of the outer piece 51. The hole 521 of the outer piece 51 is formed to be larger than the hole 521 of the body 22. Therefore, the inner circumference of the hole 522 of the outer sheet 51 protrudes from the inner circumference of the hole 521 of the body 22 and protrudes from the center side of the hole, and is configured such that the inner circumference of the hole 521 of the body 22 does not abut against the occupant 41 .

As shown in Fig. 15, the bottom surface of the front protruding portion 25 and the lower end of the leg member 31 are a plurality of anti-slip members 53 formed by bonding a material having a high friction coefficient.

In the third embodiment, the following effects are obtained.

(16) Since the posture holding tool 21 is configured such that the single-layer outer sheet 51 covers the seating surface side of the main body 22, the number of components can be reduced, and the structure thereof is also simple. Further, since the back surface and the lower surface of the main body 22 are exposed, the outer sheet 51 can be made smaller, and the outer sheet 51 can be easily covered on the main body 22. Thereby, the posture holding tool 21 can be manufactured at a relatively low price. (change example)

Further, this embodiment can be modified and embodied as follows. In addition to the shape of the spherical curved shape, the buttock support portion 23 of the posture holding tool 21 may be formed into a shape such as a flat shape, a cylindrical concave shape, or a concave curved shape. In this case, the effect of the buttock support portion 23 stably supporting the buttocks 42 in the front-rear direction and the left-right direction is less noticeable. However, since the thigh 43 is restricted by the concavely curved thigh support portion 27 in the left-right direction, the buttocks 42 is also subjected to such an influence to be in a stable state. Thereby, the occupant 41 can be supported to maintain the pelvis 151 in a horizontal state, and press and support both sides of the waist portion 44 from the rear side toward the inside side by the waist support portion 28. As described above, the buttock support portion 23 of the posture holding tool 21 can support the occupant 41 in a posture in which the posture is correct even if it is formed into a spherical curved shape. A cushioning material 32 is provided on both the seating side and the opposite side of the main body 22.・The cushioning material 32 is omitted.・The exterior piece 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 is configured to include only the body 22. The leg member 31 on the lower surface of the posture holding tool 21 is omitted, and the lower surface thereof is formed in a flat shape. The first recessed portion 30 of the joint portion of the lumbar support portion 28 is provided only on one of the right and left sides.・Other recessed portions are not formed except for the first depressed portion 30. When the third recessed portion 29 is not formed, the pair of lumbar support portions 28 form a single part of continuity in appearance, but since the lumbar support portion 28 protrudes forward, the continuous portion in the center does not abut The back bone 152 or both sides thereof can press both sides of the waist portion 44, so that there is substantially a pair. The hip support portion 23 is formed such that the single direction in the front-rear direction or the left-right direction is linear. The main body 22 is configured by FRP (glass fiber reinforced resin) made of glass fiber reinforced resin.

21‧‧‧ posture keeping equipment
22‧‧‧Ontology
23‧‧‧Hip support, first support
24‧‧‧Pre-protrusion
25‧‧‧Upper protrusion
26‧‧‧2nd recess
27‧‧‧Thigh support
28‧‧‧Low support
29‧‧‧3rd recess
30‧‧‧1st recess
301‧‧‧Edge
31‧‧‧ feet
32‧‧‧ cushioning material
34‧‧‧Outer film
41‧‧‧ occupants
42‧‧‧ hip
43‧‧‧Thighs
44‧‧‧ waist
45‧‧‧ Lower limbs
51‧‧‧ Exterior film
52‧‧‧ holes
53‧‧‧Slips
100‧‧‧ chairs
151‧‧‧ bone plate
152‧‧‧ Back bone
Thickness of the edge of t1‧‧‧
Thickness of t2‧‧‧ other parts

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

21‧‧‧ posture keeping equipment

22‧‧‧Ontology

23‧‧‧Hip support, first support

24‧‧‧Pre-protrusion

25‧‧‧Upper protrusion

26‧‧‧2nd recess

27‧‧‧Thigh support

28‧‧‧Low support

29‧‧‧3rd recess

30‧‧‧1st recess

32‧‧‧ cushioning material

34‧‧‧Outer film

41‧‧‧ occupants

42‧‧‧ hip

43‧‧‧Thighs

44‧‧‧ waist

45‧‧‧ Lower limbs

100‧‧‧ chairs

151‧‧‧ bone plate

152‧‧‧ Back bone

Claims (13)

A posture holding tool includes: a buttock support portion that can support a hip of a occupant; and a pair of lumbar support portions that can support both sides of a waist of the occupant at the rear; and includes a hard plate material. The posture holding tool according to claim 1, wherein the buttock support portion is formed in a concave shape. The posture holding tool according to claim 1, further comprising a concave thigh support portion that is located below the front portion of the lumbar support portion and that supports the two thighs of the occupant by the lower side. The posture holding tool according to any one of claims 1 to 3, wherein the waist support portion is formed in a bulging shape that is directed toward the inner front side. The posture holding tool according to any one of claims 2 to 4, wherein the buttock support portion is formed in a spherical curved shape. The posture holding tool according to any one of claims 2 to 5, wherein a leg member is protruded from both sides of the lower surface of the buttock support portion. A posture maintaining tool characterized in that the main body is formed of a hard plate material, and includes: a buttock support portion that can support the buttocks in the seated state; and a concave thigh support portion from one end side of the buttock support portion The lower side of the two thighs is protruded and supported; and a pair of lumbar support portions are located on the other end side of the buttock support portion, and the two sides of the waist portion are supported by the rear. The posture holding tool according to claim 7, wherein the exterior sheet is provided on the surface of the body. The posture holding tool according to claim 7 or 8, wherein the first recessed portion is formed at a side portion of the joint portion of the lumbar support portion. The posture holding tool according to any one of claims 7 to 9, wherein the second recessed portion is formed between the two thigh support portions. The posture holding tool according to any one of claims 7 to 10, wherein a third recessed portion is formed between the two waist support portions. The posture holding tool according to any one of claims 9 to 11, wherein a thickness of an edge portion of the first depressed portion of the main body is formed to be thicker than other portions. The posture holding tool according to any one of claims 8 to 12, wherein the exterior sheet is covered on a seating surface side of the main body, and the back surface and the lower surface of the main body are exposed.