CN214712284U

CN214712284U - Toilet seat

Info

Publication number: CN214712284U
Application number: CN202120444088.1U
Authority: CN
Inventors: 杨涛
Original assignee: Taizhou Youlekang Baby Products Co ltd
Current assignee: Taizhou Larsen High Tech Co.,Ltd.
Priority date: 2021-03-01
Filing date: 2021-03-01
Publication date: 2021-11-16
Anticipated expiration: 2031-03-01

Abstract

The utility model discloses a toilet seat ring, relating to the technical field of sanitary ware. The purpose of the utility model is realized like this: a toilet seat comprises a seat framework; the cushion layer is arranged on the upper side surface of the cushion framework and covers the inner ring part of the cushion framework and the outer ring part of the cushion framework; the cushion layer comprises a foaming layer and a waterproof film; the waterproof film is attached to the outer surface of the foaming layer; the collet, its fixed setting is at the downside surface of cushion skeleton to cover the inside and outside both ends of cushion layer. The inner end and the outer end of the waterproof membrane are covered by the bottom support. The cushion framework, the foaming layer and the waterproof film are integrally formed, so that the seat component with a soft upper part and a hard lower part is formed. The design ensures that the cushion layer cannot fall off, and the hand of a user cannot contact the end part of the cushion layer, so that the rough edges are prevented from scratching the human body; in addition, the bottom support and the cushion framework are fixed into a whole, water flow is prevented from entering the seat ring, the bottom support can share the gravity borne by the cushion framework, and the deformation of the cushion framework is avoided.

Description

Toilet seat

Technical Field

The utility model relates to the technical field of sanitary ware, in particular to a toilet seat ring.

Background

With the development of the socioeconomic level, the requirements of people on the quality of life are continuously improved. The toilet lid is an indispensable part of daily necessities, and is naturally the focus of attention. The toilet cover also comprises a toilet ring, a seat ring fixing piece, a toilet cover base and a turnover cover.

The application discloses a closestool cushion and a vacuumizing foaming preparation process, wherein the closestool cushion and the vacuumizing foaming preparation process are named in the invention, the application is 2019101533684, the publication date is 2019, 5 and 17, and the application discloses the closestool cushion and the vacuumizing foaming preparation process.

The defects that the hands of a user can contact the end part of the cushion layer, and burrs can scratch the human body; after the seat cushion is used for a period of time, the cushion layer is easy to warp, water flow easily enters the seat ring, and the cushion framework is easy to deform.

Disclosure of Invention

The utility model aims at providing a toilet seat.

The purpose of the utility model is realized like this:

a toilet seat comprises

The main body of the cushion framework is annular and is used for bearing the weight of the buttocks of a human body;

the cushion layer is arranged on the upper side surface of the cushion framework and covers the inner ring part of the cushion framework and the outer ring part of the cushion framework; the cushion layer has elasticity and is used for providing flexible support for a human body; the cushion layer comprises a foaming layer and a waterproof film; the waterproof film is attached to the outer surface of the foaming layer;

the collet, its fixed setting is at the downside surface of cushion skeleton, and covers the inside and outside both ends of cushion layer. The inner end and the outer end of the waterproof membrane are covered by the bottom support. The seat cushion framework, the foaming layer and the waterproof film are integrally formed, so that the seat component with a soft upper part and a hard lower part is formed.

Preferably, the waterproofing membrane is a TPU waterproofing membrane.

Preferably, the bottom support clamps the cushion layer and enables the cushion layer to deform to a certain degree.

Preferably, the inner end of the cushion framework and the inner end of the bottom support are connected into a whole, and the outer end of the cushion framework and the outer end of the bottom support are connected into a whole; the middle parts of the cushion framework and the bottom support are folded to form a cavity.

Preferably, a plurality of through holes are respectively formed in the inner ring part and the outer ring part of the cushion framework, and the through holes penetrate through the upper surface and the lower surface of the cushion framework; the foaming layer fills the through holes and coats the inner ring part and the outer ring part of the cushion framework.

Preferably, the outer ring part and the inner ring part of the seat cushion framework are respectively provided with a flanging extending downwards, and the through holes are uniformly distributed on the flanging.

Preferably, a first annular retaining ring and a second annular retaining ring are formed on the bottom surface of the seat cushion framework, the first annular retaining ring is close to the outer ring part, and the second annular retaining ring is close to the inner ring part; the lower sides of the first annular retainer ring and the second annular retainer ring are abutted against the bottom support; the cushion layer fills the area outside the first and second annular collars.

Preferably, the cushion skeleton and the bottom support are connected in the following manner: the bottom surface of the cushion framework is provided with a first connecting ring and a second connecting ring, and the lower ends of the first connecting ring and the second connecting ring are abutted against the bottom support and are welded with the bottom support into a whole;

or, the cushion skeleton and collet connected mode is: a plurality of bolts penetrate through the bottom support from bottom to top and are screwed into the cushion framework.

The first connecting ring and the second connecting ring are both positioned on the inner sides of the first annular retaining ring and the second annular retaining ring; a first flash groove is formed between the first connecting ring and the first annular retainer ring; and a second flash groove is formed between the second connecting ring and the second annular retainer ring.

Preferably, the cushion layer comprises a hip part at the rear end of the cushion layer, a leg part at the middle section of the cushion layer and a front baffle part at the front end of the cushion layer; the whole inclination of the cushion layer is reduced from the direction close to the hip part to the front blocking part; the shape of the hip part is from outside to inside, the hip part inclines downwards, and the inclination of the hip part is reduced from the middle of the hip part to two sides; the hip part comprises two concave surfaces which are symmetrically arranged in the middle and are used for fitting the human body; the shape of the leg part is from outside to inside, the leg part is inclined downwards, the integral inclination of the leg part is reduced from the hip part to the front blocking part, and a small cambered surface is formed at the joint of the leg part and the front blocking part and is used for being jointed with the leg part; the front blocking part is in a shape of inclining downwards from outside to inside, the inclination of the front blocking part is increased from the middle to two sides, and the heights of the inner side and the outer side of the front blocking part are decreased from the middle to two sides.

Compared with the prior art, the utility model outstanding and profitable technological effect is:

1. the bottom support in the utility model is fixedly arranged on the lower side surface of the cushion framework, and the inner end and the outer end of the cushion layer are clamped between the cushion framework and the bottom support; the cushion layer comprises a foaming layer and a waterproof film; the waterproof film is attached to the outer surface of the foaming layer, the inner end and the outer end of the waterproof film are covered by the bottom support, the cushion layer cannot fall off due to the design, the hand of a user cannot contact with the end part of the cushion layer, and burrs are prevented from scratching a human body; in addition, the bottom support and the cushion framework are fixed into a whole, water flow is prevented from entering the seat ring, the bottom support can share the gravity borne by the cushion framework, and the deformation of the cushion framework is avoided.

2. The utility model provides a perforation is formed in the cushion framework, and the perforation is attached to the inner wall of the cushion layer, thereby realizing the connection of the cushion layer and the cushion framework; through the design of the through holes formed by the collision-through process, the cushion framework and the periphery of the cushion layer can be mutually crossed and buckled, so that the connection is firmer and tighter, and the cushion layer is not easy to separate.

3. The utility model provides a first go-between welds respectively on the collet with second go-between lower extreme to the vacuole formation, the cavity is used for installing the required spare part of toilet lid, and spare part is surrounded to the cavity, thereby blocks the rivers that get into from the seat circle outside, protects spare part.

4. The cushion layer in the utility model is divided into a hip part, a leg part and a front baffle part; the whole gradient of the cushion framework is gradually reduced from the direction close to the hip to the front baffle part, thereby being more fit with the lower half of the human body.

5. The utility model is inclined downwards from outside to inside by the buttocks and the inclination from the middle of the buttocks to both sides is gradually reduced; the grooves which are symmetrical in the middle of the buttocks are formed on the two sides of the buttocks and are attached to the buttocks of a human body, so that the buttocks are more comfortable when people use the closestool.

6. The utility model provides a lean on the shank from outside-in downward sloping, lean on the whole gradient of shank to reduce from leaning on buttock to preceding fender portion direction gradually, lean on the buttock to have little cambered surface with the junction shaping of preceding fender portion, little cambered surface keeps off the portion before relatively and has obvious decline trend, and the laminating thigh that can be more comfortable improves the comfort level of user's thigh when sitting on the seat.

7. The utility model provides a preceding fender portion is from outside-in downward sloping to the gradient of preceding fender portion increases gradually to both sides from the centre, and the height of the inside and outside of preceding fender portion reduces gradually to both sides from the centre, thereby can block user's privacy position, also can laminate simultaneously and live the thigh, improves the comfort level when user uses.

8. The utility model discloses a material of junction melts the deformation when cushion skeleton and collet welding, and the discharge chute can prevent effectively that these materials from spilling over to the seat circle outside or inside the cavity, influences the use of seat circle.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the cushion frame of the present invention.

Fig. 3 is a sectional view a-a of fig. 1.

Fig. 4 is a partially enlarged view of fig. 3 at C.

Fig. 5 is a sectional view B-B of fig. 1.

Fig. 6 is a schematic view of the toilet lid of the present invention.

Fig. 7 is an exploded view of the toilet lid.

FIG. 8 is a schematic view of the mounting of the race to the race mount.

Fig. 9 is a schematic view of a connecting structure of the cushion layer and the cushion frame.

Reference numerals: 1-covering the upper cover; 2-seat ring fixing piece; 3-seat ring; 4-cushion framework; 5-bottom support; 6-a cushion layer; 7-a first connecting ring; 8-a second connecting ring; 10-a cavity; 11-an embedded block; 12-flanging; 13-a boss portion; 14-leaning against the buttocks; 15-leg rest; 16-a front stop; 17-a concave surface; 18-small arc surface; 19-screw hole one; 20-screw hole two; 21-a locking bar; 22-a pin; 23-locking; 24-a card slot; 25-a fixture block; 26-gear; 27-a return spring; 28-placing grooves; 29-a through hole; 30-a first annular collar; 31-perforating; 32-a second annular collar; 41-inner ring part; 42-outer ring portion; 61-a water-resistant membrane; 62-a foamed layer; 78-fusion; 91-a first flash tank; 92-second flash tank.

Detailed Description

The following describes the present invention in further detail with reference to the accompanying drawings.

The first embodiment is as follows: as shown in fig. 1-9, a toilet seat, a seat frame 4, the main body of which is ring-shaped and is used for bearing the weight of the buttocks of a human body;

a cushion layer 6 that is provided on the upper side surface of the cushion frame 4 and covers an inner ring portion 41 of the cushion frame 4 and an outer ring portion 42 of the cushion frame 4; the cushion layer 6 has elasticity and is used for providing flexible support for the human body; the cushion layer 6 comprises a foaming layer 62 and a waterproof film 61; the waterproof film 61 is attached to the outer surface of the foaming layer 62; the waterproof film 61 is a TPU waterproof film.

And a bottom support 5 which is fixedly arranged on the lower side surface of the cushion framework 4 and covers the inner end and the outer end of the cushion layer 6. The waterproof membrane 61 is clamped at both the inner end and the outer end by the shoe 5.

The seat cushion frame 4, the foaming layer 62 and the waterproof film 61 are integrally formed, so that a seat member with a soft upper part and a hard lower part is formed.

In a further arrangement, the bottom support 5 clamps the cushion layer 6, and the cushion layer 6 is deformed to some extent. Specifically, the base support 5 presses the waterproof film 61 onto the foaming layer 62, and the waterproof film and the foaming layer deform together. The design of the boss portion 13 results in a better clamping effect.

The bottom supports can share the gravity borne by the cushion framework, so that the deformation of the cushion framework is avoided; specifically, the middle part of the cushion framework is arched to bear the gravity of the human body; when the cushion skeleton received external force oppression, the both sides of cushion skeleton had the trend of outside extension deformation, and the collet then can further support the cushion skeleton just, improves stability.

A plurality of through holes 31 are respectively formed on the inner ring part 41 and the outer ring part 42 of the cushion framework 4; the foaming layer 62 fills the through holes 31, and the connection between the foaming layer 62 and the cushion frame 4 is realized.

The outer annular part 42 and the inner annular part 41 of the cushion framework 4 are respectively provided with a flanging 12 extending downwards, the flanging 12 is evenly provided with the through holes 31, and the foaming layer 62 is filled into the through holes 31, so that the connection is firmer, and the problem that the foaming material and the cushion framework 4 cannot be adhered is solved.

The foaming layer 62 covers the cushion framework 4 to form the embedded block 11, the embedded block 11 and the turned edge 12 are mutually crossed and buckled together, the firmness degree between the cushion framework 4 and the foaming layer 62 is increased, and the cushion framework is more durable.

A first annular retainer ring 30 and a second annular retainer ring 32 which are vertically arranged are formed on the bottom surface of the seat cushion framework 4, the first annular retainer ring 30 is close to the outer ring part 42, and the second annular retainer ring 32 is close to the inner ring part 41; the undersides of the first and second

annular collars

30, 32 abut against the shoe; the first annular retainer ring 30 and the second annular retainer ring 32 are designed to prevent the bottom support 5 and the cushion framework 4 from excessively clamping the cushion layer 6;

specifically, the embedded block 11 and the turned-over edge 12 are connected by adopting a penetration and injection process; after the foaming material is injected, the foaming material fills the areas outside the first annular retainer ring 30 and the second annular retainer ring 32, so that the foaming layer is provided with a plurality of embedded blocks 11 at corresponding positions, and the foaming layer 62 is firmly coated and fixed on the cushion framework 4, thereby forming a local wrapping situation.

The first annular retainer ring 30 and the second annular retainer ring 32 keep the foaming layer 62 outside in the production process of the product and restrain the shape of the foaming layer;

a first connecting ring 7 and a second connecting ring 8 which are vertically arranged are formed on the bottom surface of the seat cushion framework 4; the lower ends of the first connecting ring 7 and the second connecting ring 8 are welded on the bottom support through hot melting, so that the cushion framework 4 and the bottom support 5 are fixed into a whole, and the connecting part of the first connecting ring 7 and the bottom support is a welding part 78; the first connecting ring 7 and the second connecting ring 8 cooperate to form a cavity 10, the cavity 10 is used for installing the parts required by the toilet cover, and the cavity 10 surrounds the parts, thereby blocking the water flow entering from the outside of the seat ring 3 and protecting the parts.

The cushion framework 4 is welded with the bottom support 5 in a hot melting way, so that the connection is firmer and more compact, the water infiltration can be prevented, and the overall waterproofness of the seat ring 3 is improved.

The first connecting ring 7 and the second connecting ring 8 are both positioned inside the first annular retainer ring 30 and the second annular retainer ring 32; a first flash groove 91 is formed between the first connecting ring 7 and the first annular retainer ring 30; a second flash groove 92 is formed between the second connecting ring 8 and the second annular retainer ring 32. The material of junction melts the deformation when cushion skeleton 4 and collet 5 welding, and first discharge chute 91 and second discharge chute 92 can prevent effectively that these materials from spilling over to the seat circle outside or inside the cavity, influence the use of seat circle.

The cushion layer 6 at least comprises a hip part 14 positioned at the rear end of the cushion layer 6, a leg part 15 positioned at the middle section of the cushion layer 6 and a front baffle part 16 positioned at the front end of the cushion layer 6; as can be seen from fig. 1, the inclination of the whole of the cushion layer 6 gradually decreases toward the front stopper portion 16 by the buttocks portion 14, and conforms to the shape of the lower body of the human body when the human body sits on the seat 3 in the resting state.

The shape of the buttocks 14 is from outside to inside, and the inclination is inclined downwards, and the inclination of the buttocks 14 is gradually reduced from the middle of the buttocks 14 to two sides; as shown in the lower grid area of FIG. 1, concave surfaces 17 symmetrical about the middle of the buttocks 14 are formed at both sides of the buttocks 14, and the concave surfaces 17 are fitted to the buttocks of the human body, so that the buttocks are more comfortable when a person sits on the seat ring 3.

The shape of the leg rest part 15 is from outside to inside, and the leg rest part is inclined downwards, and the overall inclination of the leg rest part 15 is gradually reduced from the hip rest part 14 to the front stop part 16; as shown in the upper grid area of fig. 6, a small arc surface 18 is formed at the joint of the hip 14 and the front blocking portion 16, the small arc surface 18 has an obvious downward trend compared with the front blocking portion 16, the small arc surface 18 is used for placing the front leg of the thigh, the thigh can be attached more comfortably, and the comfort level of the thigh when a user sits on the seat ring 3 is improved.

The front baffle part 16 is in a shape of inclining downwards from outside to inside, the inclination of the front baffle part 16 is gradually increased from the middle to two sides, and the heights of the inner side and the outer side of the front baffle part 16 are gradually reduced from the middle to two sides, so that the privacy parts of a user can be blocked, the thigh can be attached, and the comfort level of the user in use is improved.

The thickness d2 of the foam layer in the middle of the leg 15 is greater than the thickness d1 of the foam layer in the middle of the hip 14, giving the thigh muscles a more comfortable feel.

With reference to fig. 7 and 8, the seat ring is detachably connected to the seat ring fixing member, and the seat ring fixing member includes a locking bar 21, the locking bar 21 is installed on the bottom support 5 of the seat ring 3, the locking bar 21 is connected to the seat ring fixing member 2 in a snap-fit manner, a pin 22 is provided on the seat ring fixing member 2, and a locking position 23 capable of locking the pin 22 is provided on the locking bar 21, so that the locking and releasing of the pin 22 at the locking position 23 are realized by moving the locking bar 21, and further, the seat ring 3 is fixed to and separated from the seat ring fixing member 2.

The pin 22 is provided with a clamping groove 24 convenient for fixing, a clamping block 25 matched with the clamping groove 24 is arranged in the lock position 23, and the clamping groove 24 is clamped on the clamping block 25, so that the pin 22 is clamped on the lock position 23.

The retainer 3 is internally formed with a gear 26, the locking bar 21 is provided with a return spring 27, one end of the return spring 27 is abutted against the gear 26, so that the return spring 27 is abutted against the gear 26, the locking bar 21 is blocked by the spring, the moving distance of the locking bar 21 is limited, and meanwhile, the locking bar 21 can be reset to the initial position by means of the elastic force generated when the return spring 27 is compressed.

The shaping has the standing groove 28 of placing the locking bar in the seat circle 3, when the seat circle 3 dismantles the washing, rivers can get into standing groove 28, and the week side of standing groove 28 is sealed, makes rivers can not get into the seat circle inside, only can flow in standing groove 28. The placement groove 28 is formed with a through hole 29 for discharging accumulated water in the placement groove 28.

Example two: the present embodiment is basically the same as the first embodiment, and the difference is: as shown in fig. 7-9, a first screw hole 19 for positioning is formed on the bottom support 5, a second screw hole 20 matched with the first screw hole 19 is formed on the cushion frame 4, and a fastening member passes through the first screw hole 19 and the second screw hole 20, so that a standby connection mode can be provided. In practical products, the outer side of the first screw hole 19 is provided with a non-slip mat.

The processing technology of the utility model:

1. putting the TPU waterproof film 61 into a mold in advance, and attaching the TPU waterproof film to the wall surface of the mold;

2. placing the cushion framework 4 into a mold, and forming a filling cavity between the cushion framework 4 and the TPU waterproof film 61;

3. injecting foaming material into the filling cavity, and heating to form a foaming layer 62; in the forming process, the foaming layer 62, the TPU waterproof film 61 and the cushion framework 4 are tightly combined into a whole to obtain an upper half layer seat ring;

4. after the upper half layer seat ring is taken out of the die and trimmed, a bottom support 5 is arranged at the lower part of the seat cushion framework 4; the bottom support 5 and the cushion framework 4 are preferably in thermal fusion, and are in screw connection in the alternative; collet 5 covers TPU water proof membrane 61 and foaming layer 62 from the lower part, and user's hand can not contact the tip of water proof membrane 61 and foaming layer 62, avoids the deckle edge fish tail human body, also can prevent that TPU water proof membrane 61 and foaming layer 62 from separating from cushion skeleton 4 to and prevent that rivers from getting into inside the seat circle.

The TPU waterproof film 61 needs to keep softness, and the softness is more common after the thickness of the TPU waterproof film exceeds 1 mm;

therefore, the thickness of the TPU waterproof membrane 61 is generally 0.05mm to 1 mm; on this basis, the applicant chose a thickness of 0.1 mm.

Because the TPU waterproof film 61 is thin, a single TPU waterproof film 61 is arranged between the bottom support 5 and the cushion framework 4 and is easy to break or separate;

the TPU waterproof film 61 is compounded on the surface of the foaming layer 62, and then the foaming layer 62, the TPU waterproof film 61 and the cushion framework 4 are tightly combined into a whole through tight combination between the foaming layer 62 and the cushion framework 4.

According to the design needs, the bottom support 5 can clamp or not clamp the cushion layer 6, and generally speaking, the bottom support 6 is better than the scheme that the cushion layer 6 is clamped in cooperation with the cushion framework 4.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A toilet seat characterized by comprising

The main body of the cushion framework (4) is annular and is used for bearing the weight of the buttocks of a human body;

a cushion layer (6) which is arranged on the upper side surface of the cushion framework (4) and covers an inner ring part (41) of the cushion framework (4) and an outer ring part (42) of the cushion framework (4); the cushion layer (6) has elasticity and is used for providing flexible support for the human body; the cushion layer (6) comprises a foaming layer (62) and a waterproof film (61); a waterproof film (61) is attached to the outer surface of the foam layer (62);

the bottom support (5) is fixedly arranged on the lower side surface of the cushion framework (4) and covers the inner end and the outer end of the cushion layer (6); the inner end and the outer end of the waterproof membrane (61) are covered by the bottom support (5);

the seat cushion framework (4), the foaming layer (62) and the waterproof film (61) are integrally formed, so that a seat component with a soft upper part and a hard lower part is formed.

2. A toilet seat according to claim 1, wherein: the bottom support (5) clamps the cushion layer (6) and enables the cushion layer (6) to deform to a certain degree.

3. A toilet seat according to claim 1, wherein: the waterproof membrane (61) is a TPU waterproof membrane.

4. A toilet seat according to claim 1, wherein: a plurality of through holes (31) are respectively formed in the inner ring part (41) and the outer ring part (42) of the cushion framework (4), and the through holes (31) penetrate through the upper surface and the lower surface of the cushion framework (4); the foaming layer (62) fills the through hole (31) and covers the inner ring portion (41) and the outer ring portion (42) of the cushion frame (4).

5. A toilet seat according to claim 4, wherein: the outer ring part (42) and the inner ring part (41) of the cushion framework (4) are respectively provided with a flanging (12) extending downwards, and the flanging (12) is evenly provided with the through holes (31).

6. A toilet seat according to claim 1, wherein: a first annular retainer ring (30) and a second annular retainer ring (32) which are vertically arranged are formed on the bottom surface of the seat cushion framework (4), the first annular retainer ring (30) is close to the outer ring part (42), and the second annular retainer ring (32) is close to the inner ring part (41); the lower sides of the first annular retainer ring (30) and the second annular retainer ring (32) are abutted against the bottom support; the cushion layer (6) fills the area outside the first annular collar (30) and the second annular collar (32).

7. A toilet seat according to claim 1 or 6, wherein: cushion skeleton (4) and collet (5) connected mode are: a first connecting ring (7) and a second connecting ring (8) which are vertically arranged are formed on the bottom surface of the cushion framework (4); the lower ends of the first connecting ring (7) and the second connecting ring (8) are abutted against the bottom support (5) and are welded into a whole;

or, the cushion framework (4) and the bottom support (5) are connected in the following mode: a plurality of bolts penetrate through the bottom support (5) from bottom to top and are screwed into the cushion framework (4).

8. A toilet seat according to claim 7, wherein: the first connecting ring (7) and the second connecting ring (8) are both positioned on the inner sides of the first annular retaining ring (30) and the second annular retaining ring (32); a first flash groove (91) is formed between the first connecting ring (7) and the first annular retainer ring (30); a second flash groove (92) is formed between the second connecting ring (8) and the second annular retainer ring (32).

9. A toilet seat according to any one of claims 1 to 8, wherein: the cushion layer (6) comprises a hip part (14) positioned at the rear side, a leg part (15) positioned at the middle section and a front blocking part (16) positioned at the front end; the inclination of the surface of the cushion layer (6) is reduced from the buttocks (14) to the front baffle part (16);

the hip part (14) comprises two concave surfaces (17) which are symmetrically arranged in the middle, and the concave surfaces (17) are used for being attached to a human body;

the surface of the cushion layer (6) is changed from a concave surface to a convex surface at the joint of the leg rest part (15) and the front baffle part (16);

the thickness (d2) of the foam layer in the middle of the leg (15) is larger than the thickness (d1) of the foam layer in the middle of the hip (14).