CN220778185U - Folding chair - Google Patents

Abstract

The utility model discloses a folding chair, which comprises a bottom support frame, wherein the bottom support frame comprises a front leg frame, a rear leg is rotatably connected on the front leg frame, a seat component which is unfolded or folded along with the bottom support frame when the bottom support frame is unfolded or folded is arranged between the front leg frame and the rear leg, the seat component comprises a seat plate, the front end of the seat plate is connected on the front leg frame when the seat component is in an unfolded state, the seat assembly further comprises a linkage part which is rotationally connected between the front leg frame and the seat plate, the bottom support frame is further connected with a backrest assembly, the front leg frame comprises a front leg seat and a front leg rod, the rear leg is rotationally connected to the front leg seat, the front leg seat is further connected with a handrail assembly which can be unfolded or folded, and when the handrail assembly is rotationally unfolded relative to the front leg seat and is propped against the front leg seat, the handrail assembly is arranged in the inclined front direction. The utility model aims to overcome the defects of the prior art and provide the folding chair which is convenient to fold, small in size after being folded and more comfortable to sit.

Description

Folding chair

[ field of technology ]

The present utility model relates to A folding chair.

[ background Art ]

The bath chair is a chair which enables a user to sit for bathing, the user group is mainly old people with relatively large ages or weak patients, most of the existing bath chairs are fixedly placed after being spliced and installed, and the chair cannot be folded and stored, so that the chair occupies a large space of a bath room or a toilet, is not convenient to store, needs to be automatically installed when buying back, is relatively troublesome, and if the chair adopts a direct packaging and selling mode, a used packaging box is relatively large, and is inconvenient to transport and store; meanwhile, most armrests of the existing bath chairs are arranged vertically, if hands of old people or patients need to be leaned against the armrests when the old people or patients need to be bathed, the body needs to be matched downwards, the waist of the old people or patients possibly does not lean against the backrest in a suspended state, buttocks are located at a position on the seat plate, which is in front of the seat plate, and the old people or patients easily slide on the seat plate, so that potential safety hazards exist.

The present utility model has been developed in response to the above-described drawbacks.

[ utility model ]

The utility model aims to overcome the defects of the prior art and provide the folding chair which is convenient to fold, small in size after being folded and more comfortable to sit.

The utility model is realized by the following technical scheme:

the folding chair can move from an unfolding state to a folding state, comprises a bottom support frame 1 capable of being unfolded or folded, wherein the bottom support frame 1 comprises a front leg frame 11, a linkage piece 22 which is rotatably connected between the front leg frame 11 and the rear leg 12 around a first axis A is rotatably connected with the rear leg 12, a seat assembly 2 which is unfolded or folded along the bottom support frame 1 when the bottom support frame 1 is unfolded or folded is arranged between the front leg frame 11 and the rear leg 12, the seat assembly 2 comprises a seat plate 21, the rear end of the seat plate 21 is rotatably connected onto the rear leg 12 around a second axis B, when the seat assembly 2 is in the unfolding state, the front end of the seat plate 21 is connected onto the front leg frame 11, the front leg assembly 2 also comprises a linkage piece 22 which is rotatably connected between the front leg frame 11 and the seat plate 21 and can move along the back leg 12, the front leg frame 22 is rotatably connected onto the front leg frame 11 around a third axis C, the rear end of the seat assembly 22 is rotatably connected onto the seat frame 11 around a fourth axis D, the front leg assembly is rotatably connected onto the seat support frame 4, the front leg 111 is rotatably connected onto the seat assembly 111, the seat assembly 111 is rotatably connected onto the front leg 111 around the front leg 111, the seat assembly 111 is rotatably connected onto the seat assembly 111, the seat assembly 111 is rotatably connected onto the front leg assembly 111, and the seat assembly 111 is rotatably connected onto the seat assembly 111, and the seat assembly 111 is rotatably and the seat assembly 111.

The armrest assembly 4 comprises an armrest seat 41 rotatably connected to the front leg seat 111, wherein an abutting portion 42 capable of abutting against the front leg seat 111 is provided in the armrest seat 41, and a bottom surface 421 capable of abutting against the front leg seat 111 is provided on the abutting portion 42.

The armrest seat 41 is detachably connected with a soft adhesive layer 411, and the soft adhesive layer 411 is provided with a plurality of friction strips 412.

The front leg rod 112 is provided with a transverse rod 113 extending transversely, the front end of the seat plate 21 is detachably connected to the transverse rod 113 when the seat assembly 2 is in a unfolded state, the linkage piece 22 is a linkage rod, the front side of the linkage piece 22 is rotatably connected to the transverse rod 113, the rear side of the linkage piece 22 is rotatably connected to the seat plate 21, the rear leg 12 comprises a rear leg rod 121, the rear end of the seat plate 21 is provided with a transverse supporting rod 211, and the seat plate 21 is rotatably connected to the rear leg rod 121 around a second axis B through the transverse supporting rod 211.

The front side of the seat plate 21 is provided with a first accommodating groove 212 capable of accommodating the cross bar 113, and the seat plate 21 is also provided with a clamping groove 213 capable of clamping the cross bar 113 when the seat assembly 2 is in a unfolded state.

The seat plate 21 on be equipped with along X direction with its U-shaped slot 214 that runs through, U-shaped slot 214's opening set up, seat plate 21 front end be equipped with upwards with its first U-shaped mouth 215 that runs through and communicates with U-shaped slot 214 front end, first U-shaped mouth 215's opening set up forward for convenient cleaning user's perineum, seat plate 21 rear end be equipped with upwards with its second U-shaped mouth 216 that runs through and communicates with U-shaped slot 214 rear end, second U-shaped mouth 216's opening set up backward for convenient cleaning user's anus district, U-shaped slot 214 include with first U-shaped mouth 215's first section 217 and with second U-shaped mouth 216's second section 218 intercommunication, just first section 217 and second section 218 between be equipped with the third section 219, first section 217, third section 219 and second section 218's width be the size setting.

The seat plate 21 is provided with a left cushion portion 51 and a right cushion portion 52, the U-shaped groove 214 is arranged between the left cushion portion 51 and the right cushion portion 52, the first U-shaped opening 215 is arranged on the front side between the left cushion portion 51 and the right cushion portion 52, and the second U-shaped opening 216 is arranged on the rear side between the left cushion portion 51 and the right cushion portion 52.

The underside of the seat plate 21 is also provided with a receiving slot 210 for receiving the linkage 22.

The front side of the linkage piece 22 is provided with a second accommodating groove 221 capable of accommodating the cross rod 113, the linkage piece 22 is provided with a deformable clamping mouth 222 positioned at the second accommodating groove 221, and the clamping mouth 222 is provided with a clamping mouth 223 which can be communicated with the second accommodating groove 221 and can be used for the cross rod 113 to pass through when the clamping mouth 222 deforms and expands or can prevent the cross rod 113 from separating when the clamping mouth 222 deforms and contracts.

The seat plate 21 is also provided with an anti-slip pad 7, and the seat plate 21 and the anti-slip pad 7 are provided with through holes 8.

Compared with the prior art, the utility model has the following advantages: when the folding seat is required to be folded and placed, the armrest component is pushed upwards to rotate relative to the front leg seat and close to the backrest component, then the front end of the seat plate is lifted, at the moment, the rear end of the seat plate rotates relative to the rear leg around the second axis B, the front end of the seat plate moves upwards to drive the rear end of the linkage piece to move upwards and rotate relative to the seat plate around the fourth axis D, and meanwhile, the front end of the linkage piece rotates relative to the front leg frame around the third axis C, at the moment, the front leg frame and the rear leg are pulled to close to each other and fold, the whole folding process is very smooth, only the front end of the seat plate is pushed upwards to rotate, the folding operation is simple, the occupied volume after folding is smaller, the folding operation is convenient to package and store, the folding operation is convenient, and the folding operation is convenient when the old people need to be bathed; meanwhile, when the armrest assembly rotates and expands relative to the front leg seat to prop against the front leg seat, the armrest assembly is arranged obliquely upwards, so that the arrangement is more in line with the human mechanics, when a patient or the old sits on the folding chair, the patient or the old can prop against the backrest assembly, and the waist of the patient or the old can prop against the backrest assembly, so that the seat plate is not easy to slide on the seat plate after being positioned at the seat plate, and the seat plate is safer.

[ description of the drawings ]

FIG. 1 is one of perspective views of a folding chair according to embodiment 1 of the present utility model;

FIG. 2 is a second perspective view of the folding chair according to embodiment 1 of the present utility model;

FIG. 3 is a side view of the folding chair of embodiment 1 of the present utility model;

FIG. 4 is a state diagram of the folding chair according to embodiment 1 of the present utility model during folding;

FIG. 5 is one of perspective views of the folding chair according to embodiment 1 of the present utility model during folding;

FIG. 6 is a second state diagram of the folding chair according to the embodiment 1 of the present utility model;

FIG. 7 is a second perspective view of the folding chair according to embodiment 1 of the present utility model;

FIG. 8 is a cross-sectional view of the front leg rest and armrest assembly of the folding chair of embodiment 1 of the present utility model;

FIG. 9 is an exploded view of the armrest assembly in the folding chair of embodiment 1 of the present utility model;

FIG. 10 is a perspective view showing the extension of the folding chair according to embodiment 1 of the present utility model;

FIG. 11 is a side view of the folding chair of embodiment 1 of the present utility model when extended;

FIG. 12 is a sectional view of a first height adjustment assembly in the folding chair of embodiment 1 of the present utility model;

FIG. 13 is a sectional view of a second height adjustment assembly in the folding chair of embodiment 1 of the present utility model;

FIG. 14 is a perspective view of a suction cup in the folding chair of embodiment 1 of the present utility model;

FIG. 15 is a perspective view of a folding chair according to embodiment 2 of the present utility model;

FIG. 16 is a top view of the folding chair of embodiment 2 of the present utility model;

FIG. 17 is a state diagram of the folding chair according to embodiment 2 of the present utility model during folding;

figure 18 is an exploded view of the linkage and front leg frame of the folding chair of embodiment 2 of the present utility model.

[ detailed description ] of the utility model

The utility model is further described below with reference to the accompanying drawings:

example 1: as shown in fig. 1 to 14, a folding chair can move from an unfolding state to a folding state, and comprises a bottom support frame 1 capable of being unfolded or folded, the bottom support frame 1 comprises a front leg frame 11, a rear leg 12 is rotatably connected to the front leg frame 11 around a first axis a, a seat assembly 2 which is unfolded or folded along the bottom support frame 1 when the bottom support frame 1 is unfolded or folded is arranged between the front leg frame 11 and the rear leg 12, the seat assembly 2 comprises a seat plate 21 with the rear end rotatably connected to the rear leg 12 around a second axis B, the front end of the seat plate 21 is connected to the front leg frame 11 when the seat assembly 2 is in the unfolding state, a linkage piece 22 which is rotatably connected between the front leg frame 11 and the seat plate 21 and enables the front leg frame 11 to be mutually close to the rear leg 12 is rotatably connected to the front leg frame 11 around a third axis C, the rear end of the linkage piece 22 is rotatably connected to the front leg frame 11 around a fourth axis D, the seat assembly is rotatably connected to the front leg 111 around a seat support frame 4 around a second axis B, the front leg 111 is rotatably connected to the seat assembly 111, and the seat assembly 111 is rotatably connected to the front leg 111 around a second axis B, and the seat assembly 111 is rotatably connected to the front leg 111 around the front leg 111, and the seat assembly 111 is rotatably connected to the seat assembly 111.

When the folding and placing are needed, the armrest assembly 4 is pushed upwards, the armrest assembly 4 rotates upwards relative to the front leg seat 111 to be close to the backrest assembly 3, then the front end of the seat plate 21 is lifted, the rear end of the seat plate 21 rotates relative to the rear leg 12 around the second axis B, the front end of the seat plate 21 moves upwards to drive the rear end of the linkage 22 to move upwards and rotate relative to the seat plate 21 around the fourth axis D, meanwhile, the front end of the linkage 22 rotates relative to the front leg frame 11 around the third axis C, the front leg frame 11 and the rear leg 12 are pulled to be close to each other for folding, the whole folding process is smooth, only the front end of the seat plate 21 is pushed upwards to rotate, the folding operation is simple, the occupied volume after folding is smaller, the folding and placing are convenient, and the folding operation is more convenient when the old people need to bathe; meanwhile, when the armrest assembly 4 rotates and expands relative to the front leg seat 111 and is propped against the front leg seat 111, the armrest assembly 4 is arranged obliquely upwards, so that the arrangement is more in line with the human mechanics, when a patient or the old sits on the folding chair, the patient or the old can feel more comfortable, the waist of the patient or the old can also prop against the backrest assembly 3, and after the seat plate 21 is also deviated in position, the seat plate 21 is not easy to slide, and the seat plate 21 is safer.

As shown in fig. 6 to 9, the armrest assembly 4 includes an armrest seat 41 rotatably connected to the front leg rest 111, wherein an abutment portion 42 capable of abutting against the front leg rest 111 is provided in the armrest seat 41, and a bottom surface 421 capable of abutting against the front leg rest 111 is provided on the abutment portion 42. When the armrest seat 41 is rotated and unfolded, the abutting portion 42 abuts against the front leg rest 111, and the bottom surface 421 abuts against the upper surface of the front leg rest 111, so that the armrest seat 41 is inclined upward.

As shown in fig. 8 and 10, the armrest seat 41 is detachably connected with a soft adhesive layer 411, and a plurality of friction strips 412 are disposed on the soft adhesive layer 411. The friction bar 412 is used for increasing friction between the old or the patient and the armrest seat 41; the soft adhesive layer 411 is detachably connected, so that replacement is facilitated.

As shown in fig. 5 to 7, the front leg bar 112 is provided with a transverse bar 113 extending in a transverse direction, and when the seat assembly 2 is in a unfolded state, the front end of the seat plate 21 is detachably connected to the transverse bar 113, the linkage 22 is a linkage bar, the front side of the linkage 22 is rotatably connected to the transverse bar 113, the rear side of the linkage 22 is rotatably connected to the seat plate 21, the rear leg 12 comprises a rear leg bar 121, the rear leg bar 121 is provided with a transverse extending bar 211, the rear end of the seat plate 21 is provided with a transverse bar 211, and the seat plate 21 is rotatably connected to the rear leg bar 121 around a second axis B through the transverse bar 211. The front end of the seat plate 21 rests against the cross bar 113 when the seat assembly 2 is in the unfolded state, and the support is more stable and safer.

As shown in fig. 7, the front side of the seat plate 21 is provided with a first accommodating groove 212 capable of accommodating the cross bar 113, and the seat plate 21 is further provided with a clamping groove 213 capable of clamping the cross bar 113 when the seat assembly 2 is in the unfolded state. The first receiving groove 212 not only can position the cross bar 113, but also can make the connection between the seat plate 21 and the cross bar 113 more stable, the clamping groove 213 clamps the cross bar 113 into and locks, when the seat plate 21 needs to be separated from the cross bar 113, the front end of the seat plate 21 is lifted upwards, and the opening of the clamping groove 213 is enlarged to be separated from the cross bar 113.

As shown in fig. 7, the underside of the seat plate 21 is further provided with a receiving groove 210 capable of receiving the linkage 22. The accommodating groove 210 enables the linkage 22 to be located in the seat plate 21 when being unfolded, so that the volume of the folding chair is smaller, the distance between the linkage 22 and the seat plate 21 is smaller, and the folding is smoother.

As shown in fig. 1, the seat plate 21 is further provided with an anti-slip pad 7, and the seat plate 21 and the anti-slip pad 7 are provided with through holes 8. The anti-slip pad 7 can prevent the old from slipping during bathing. The through holes 8 facilitate the drainage of the sliding pad 7 and the seat plate 21 during bath, and prevent the accumulation of dirty water.

As shown in fig. 14, suction cups 6 are arranged at the bottoms of the front leg frame 11 and the rear leg 12, and a plurality of concentric annular grooves 61 are arranged on the suction cups 6 at intervals. The suction cup 6 can enable the front leg frame 11 and the rear leg 12 to be grabbed on the floor, so that the folding chair is prevented from sliding, and meanwhile, the suction cup 6 can be grabbed more firmly due to the plurality of annular grooves 61 which are concentric and are arranged at intervals.

As shown in fig. 1 and 8, the backrest module 3 includes a back plate 31 and a connecting rod 32 connected to the back plate 31, wherein the connecting rod 32 is connected to the front leg rest 111. The connection rod 32 is connected to the front leg rest 111 by a screw or the like, and the connection is more stable and convenient to install.

As shown in fig. 10 to 13, the front leg frame 11 includes a front leg seat 111 that also serves as an armrest, a front leg rod 112 is connected to the lower end of the front leg seat 111, a cross rod 113 is transversely connected to the front leg rod 112, the rear leg 12 is rotatably connected to the front leg seat 111, a front support rod 114 that can slide relative to the front leg rod 112 is connected to the front leg rod 112, a first height adjusting assembly 115 that can slide relative to the front support rod 114 and adjust the height position of the front support rod 114 relative to the front leg rod 112 is disposed between the front support rod 114 and the front leg rod 112, the first height adjusting assembly 115 includes a plurality of first height adjusting positions 1151 disposed on the front support rod 114, a second elastic sheet 1152 is disposed in the front leg rod 112, and a second elastic bean 1153 that can be snapped into or separated from the first height adjusting positions 1151 is disposed on the second elastic sheet 1152. The front leg seat 111 can be used as a handrail, and the old can put both hands on the handrail when bathing, so that the use is more convenient. And when the height of the front supporting rod 114 relative to the front leg rod 112 needs to be adjusted, the second elastic beans 1153 are pressed down, the second elastic beans 1153 are separated from the first adjusting position 1151, the front supporting rod 114 can be pulled downwards or slid upwards at the moment, when the height is adjusted in place, the second elastic beans 1153 are clamped into the corresponding first adjusting positions 1151, the front supporting rod 114 and the front leg rod 112 are locked again, and the height position of the front supporting rod 114 relative to the front leg rod 112 can be adjusted, so that the height of the front supporting rod 114 is suitable for old people with different heights.

As shown in fig. 10 to 13, the rear leg 12 includes a rear leg rod 121, the rear leg rod 121 is connected with a rear supporting rod 122 capable of sliding relative to the rear leg rod 121, a second height adjusting assembly 123 capable of adjusting the height position of the rear supporting rod 122 relative to the rear leg rod 121 is arranged between the rear supporting rod 122 and the rear leg rod 121, the second height adjusting assembly 123 includes a plurality of second adjusting positions 1231 arranged on the rear supporting rod 122, a third elastic piece 1232 is arranged in the rear leg rod 122, and a third elastic bean 1233 capable of being clamped into or separated from the second adjusting positions 1231 is arranged on the third elastic piece 1232. When the height of the rear supporting rod 122 relative to the rear leg rod 122 needs to be adjusted, the third elastic beans 1233 are pressed down, the third elastic beans 1233 are separated from the second adjusting position 1231, the rear supporting rod 122 can be pulled downwards or slid upwards at the moment, when the height is adjusted to be in place, the third elastic beans 1233 are clamped into the corresponding second adjusting positions 1231, the rear supporting rod 122 and the rear leg rod 122 are locked again, and the height position of the supporting rod 122 relative to the rear leg rod 121 can be adjusted, so that the height of the rear supporting rod 122 is adjusted to adapt to old people with different heights.

Example 2: as shown in fig. 15 to 18, the difference between this embodiment and embodiment 1 is that the seat plate 21 is provided with a U-shaped groove 214 penetrating the seat plate in the X direction, the opening of the U-shaped groove 214 is upward, the front end of the seat plate 21 is provided with a first U-shaped opening 215 penetrating the seat plate upward and communicating with the front end of the U-shaped groove 214, the opening of the first U-shaped opening 215 is forward arranged to facilitate cleaning of the perineum of the user, the rear end of the seat plate 21 is provided with a second U-shaped opening 216 penetrating the seat plate upward and communicating with the rear end of the U-shaped groove 214, the opening of the second U-shaped opening 216 is rearward arranged to facilitate cleaning of the anus area of the user, the U-shaped groove 214 includes a first section 217 communicating with the first U-shaped opening 215 and a second section 218 communicating with the second U-shaped opening 216, a third section 219 is provided between the first section 217 and the second section 218, and the first section 217, the third section 219 and the second section 218 are provided with large widths. The seat plate 21 of the bath chair is provided with the U-shaped groove 214, the front side of the seat plate 21, which is positioned on the U-shaped groove 214, is provided with the first U-shaped opening 215, and the rear side of the seat plate 21, which is positioned on the U-shaped groove 214, is provided with the second U-shaped opening 216. The first section 217 and the second section 218 are arranged to correspond to the perineum and anus parts of the human body, so that the cleaning is convenient.

The seat plate 21 is provided with a left cushion portion 51 and a right cushion portion 52, the U-shaped groove 214 is arranged between the left cushion portion 51 and the right cushion portion 52, the first U-shaped opening 215 is arranged on the front side between the left cushion portion 51 and the right cushion portion 52, and the second U-shaped opening 216 is arranged on the rear side between the left cushion portion 51 and the right cushion portion 52. The positions of the left cushion part 51 and the right cushion part 52 correspond to the two sides of the buttocks of the human body, which is convenient for the user to sit and can prevent the user from sliding during bathing.

The front side of the linkage piece 22 is provided with a second accommodating groove 221 capable of accommodating the cross rod 113, the linkage piece 22 is provided with a deformable clamping mouth 222 positioned at the second accommodating groove 221, and the clamping mouth 222 is provided with a clamping mouth 223 which can be communicated with the second accommodating groove 221 and can be used for the cross rod 113 to pass through when the clamping mouth 222 deforms and expands or can prevent the cross rod 113 from separating when the clamping mouth 222 deforms and contracts. The front end of the linkage member 22 is detachably connected to the cross bar 113, so that the installation is convenient, and the adopted clamping opening 222 can be deformed, so that the installation is more convenient and quick.

Claims (10)

1. A folding chair capable of moving from an unfolded state to a folded state, characterized in that: comprises a bottom supporting frame (1) which can be unfolded or folded, the bottom supporting frame (1) comprises a front leg frame (11), the front leg frame (11) is rotationally connected with a rear leg (12) around a first axis (A), a seat component (2) which can follow the bottom supporting frame (1) to unfold or fold when the bottom supporting frame (1) is unfolded or folded is arranged between the front leg frame (11) and the rear leg (12), the seat component (2) comprises a seat plate (21) which is rotationally connected with the rear leg (12) around a second axis (B) at the rear end, the front end of the seat plate (21) is connected with the front leg frame (11) when the seat component (2) is in an unfolded state, the seat component (2) also comprises a linkage (22) which is rotationally connected between the front leg frame (11) and the seat plate (21) and can move along with the seat plate (21) when the seat plate (21) is folded, the linkage (22) is mutually close to the front leg frame (11) around the second axis (B), the front end (22) is rotationally connected with the seat plate (21) around the fourth axis (3) and the seat plate (21) around the fourth axis (3), the front leg frame (11) comprises a front leg seat (111) which is in a strip shape, a front leg rod (112) is connected to the front end of the front leg seat (111), the rear leg (12) is rotationally connected to the middle of the front leg seat (111) around a first axis (A), the front leg seat (111) is further connected with a handrail component (4) which can be rotationally unfolded relative to the front leg seat (111) or rotationally folded relative to the front leg seat to be close to the backrest component (3), and when the handrail component (4) is rotationally unfolded relative to the front leg seat (111) and is rotationally abutted to the front leg seat (111), the handrail component (4) is arranged in an inclined front direction.

2. The folding chair as in claim 1, wherein: the armrest assembly (4) comprises an armrest seat (41) which is rotationally connected to a front leg seat (111), a propping part (42) which can prop against the front leg seat (111) is arranged in the armrest seat (41), and a bottom surface (421) which can prop against the front leg seat (111) is arranged on the propping part (42).

3. The folding chair as in claim 2, wherein: the handrail seat (41) is also detachably connected with a soft rubber layer (411), and a plurality of friction strips (412) are arranged on the soft rubber layer (411).

4. The folding chair as in claim 1, wherein: the utility model provides a seat assembly, including seat board (21), front leg pole (112) on be equipped with along horizontal extension's horizontal pole (113), and front end detachably of seat board (21) is connected on horizontal pole (113) when seat assembly (2) are in the state of expanding, link (22) be the gangbar, link (22) front side rotate and connect on horizontal pole (113), link (22) rear side rotate and connect on seat board (21), rear leg (12) include rear leg pole (121), the rear end of seat board (21) be equipped with horizontal pole (211), seat board (21) rotate around second axis (B) and connect on rear leg pole (121) through horizontal pole (211).

5. The folding chair as in claim 4, wherein: the front side of the seat plate (21) is provided with a first accommodating groove (212) capable of accommodating the cross rod (113), and the seat plate (21) is also provided with a clamping groove (213) capable of clamping the cross rod (113) when the seat assembly (2) is in a unfolding state.

6. The folding chair as in claim 1, wherein: the seat board (21) on be equipped with along X direction with its U-shaped slot (214) that runs through, the opening of U-shaped slot (214) set up, seat board (21) front end be equipped with upwards run through it and with first U-shaped mouth (215) of U-shaped slot (214) front end intercommunication, the opening of first U-shaped mouth (215) set up forward to make the user's perineum of convenient cleaning, seat board (21) rear end be equipped with upwards run through it and with second U-shaped mouth (216) of U-shaped slot (214) rear end intercommunication, the opening of second U-shaped mouth (216) set up backward, so that the user's anus area of convenient cleaning, U-shaped slot (214) include first section (217) and second section (218) of second U-shaped mouth (216) intercommunication, just first section (217) and second section (218) between be equipped with third section (219), second section (218) are big section and third section (219).

7. The folding chair as in claim 6, wherein: the seat plate (21) on be equipped with left cushion portion (51) and right cushion portion (52), U-shaped slot (214) set up between left cushion portion (51) and right cushion portion (52), first U-shaped mouth (215) set up the front side between left cushion portion (51) and right cushion portion (52), second U-shaped mouth (216) set up the rear side between left cushion portion (51) and right cushion portion (52).

8. The folding chair as claimed in claim 4 or 5 or 6 or 7, wherein: the lower side of the seat plate (21) is also provided with a containing groove (210) which can contain the linkage piece (22).

9. The folding chair as in claim 8, wherein: the front side of the linkage piece (22) is provided with a second accommodating groove (221) capable of accommodating the cross rod (113), the linkage piece (22) is provided with a clamping mouth (222) capable of deforming at the position of the second accommodating groove (221), and the clamping mouth (222) is provided with a clamping mouth (223) capable of communicating with the second accommodating groove (221) and preventing the cross rod (113) from separating when the clamping mouth (222) deforms and expands or the clamping mouth (222) deforms and contracts.

10. The folding chair as in claim 1, wherein: the seat plate (21) is also provided with an anti-slip pad (7), and the seat plate (21) and the anti-slip pad (7) are provided with through holes (8) which can be formed in the upper part of the seat plate.