CN115581567A - Folding wheelchair - Google Patents

Abstract

The invention discloses a folding wheelchair, which comprises a bracket, including left and right bracket bodies, which are respectively connected to the left and right wheel assemblies; a seat plate, including first and second board bodies connected by rotation, the first board body and the left bracket The body is rotated and connected, and the second plate body is connected with the right bracket body in rotation; the telescopic assembly is located at the bottom of the seat plate, including the first and second telescopic units, and the limit piece with a stroke groove; the first and second telescopic units It is V-shaped, and the included angle is variable; when the first and second boards are unfolded and used, the ends of the first and second telescopic units are stacked up and down, and are set close to the center of the seat board; When turning and folding, the second telescopic unit slides along the stroke groove, and the V-shaped angle between the first and second telescopic units decreases. The telescopic assembly of the present invention forms a strong supporting effect on the seat plate, and the seat plate has high stability and good comfort; the seat plate is designed to be folded and stored in the width direction, which simplifies the overall structure and ensures the structural stability of the bracket.

Description

a folding wheelchair

technical field

The invention belongs to the technical field of wheelchairs, in particular to a folding wheelchair.

Background technique

Wheelchairs bring great convenience to the travel of people with limited mobility. In order to facilitate the transfer of wheelchairs, wheelchairs are usually folded and transported by vehicles. For the folding of wheelchairs, Chinese patent CN216823926U discloses "Automatically Folding Electric Wheelchairs", When it is folded, the armrest, the armrest support bar, the cushion frame, the rear support arm and the front support arm are all folded, and the folding direction is the front and rear directions of the wheelchair. That is to say, the whole is divided into a multi-segment structure, and the flexible connection between each segment realizes folding, resulting in poor stability when the whole is unfolded and used, and there are many parts, and the folding operation is relatively complicated.

Chinese patent CN 216628939U discloses "A Foldable Liftable Wheelchair for Medical Use", the folding direction is the left and right directions of the wheelchair, and the folding is realized by the folding frame. But the seat cushion is made of flexible material, and the folding frame does not directly contact the supporting effect of the seat cushion, so the overall stability is not good, and the comfort is relatively poor.

As our country enters an aging society, wheelchairs will become more and more important mobility aids. As we all know, taking care of people with reduced mobility is a very tiring job, and the convenience of using wheelchairs is particularly important; for people with reduced mobility , the comfort and stability of the wheelchair are more important. Therefore, it is necessary to optimize the structure of the existing wheelchair, and at the same time facilitate the use of the caregiver and the care receiver. The structure is simple, the operation is convenient, and the stability is good. A wheelchair with multiple functions for auxiliary rehabilitation.

Contents of the invention

In order to overcome the deficiencies of the prior art, the present invention provides a folding wheelchair with simple structure, simple folding operation, telescopic assembly directly supports the seat plate, and high structural stability.

The technical solution adopted by the present invention to solve the technical problem is: a folding wheelchair, comprising:

The bracket includes a left bracket body and a right bracket body, which are respectively connected with a left wheel assembly and a right wheel assembly;

The seat plate includes a first plate body and a second plate body that are rotatably connected, and the first plate body is rotatably connected to the left bracket body, and the second plate body is rotatably connected to the right bracket body;

The telescopic assembly is located at the bottom of the seat plate, and includes a first telescopic unit, a second telescopic unit, and a stopper with a travel groove, the stopper is connected with the second telescopic unit, and the first telescopic unit part of the stroke groove; the first telescopic unit and the second telescopic unit are V-shaped, and the included angle is variable;

When the first plate body and the second plate body are unfolded and used, the ends of the first telescopic unit and the second telescopic unit are stacked up and down, and are arranged close to the center of the seat plate; between the first plate body and the second plate body When turning and folding, the second telescopic unit slides along the stroke groove, and the V-shaped included angles of the first telescopic unit and the second telescopic unit both shrink.

In the present invention, the telescopic assembly is arranged under the seat plate to form a strong supporting effect on the seat plate, making the ride more comfortable and stable, and the seat plate is designed to be folded and stored in the width direction, and the bracket does not need to be folded and stored, which simplifies the overall structure , the structural stability of the bracket is guaranteed; the folding structure of the telescopic assembly is simple and easy to operate. The first telescopic unit and the second telescopic unit are two V-shaped structures with opposite openings, and finally unfolded to form a stable X-shaped structure. The support of the board is firm.

Further, it also includes a locking unit, which is rotatably connected to the seat plate, and is provided with a locking protrusion capable of abutting against the second telescopic unit. The design of the locking protrusion can ensure that the second telescopic unit is close to the seat plate, so that the telescopic assembly will not be detached from the seat plate, ensuring a firm support for the seat plate; at the same time, the seat plate hooks the second telescopic unit, Because the folding directions of the two are different, they just lock each other, making the structure stable; the locking convex part is unlocked with one key, making the folding operation of the wheelchair easier.

Further, the first telescopic unit includes a first rotating shaft, a first upper connector, a first rod connected to the first upper connector, a first lower connector connected to the first upper connector for coaxial rotation, And the second rod body connected with the first lower connecting head, the first lower connecting head is extended to form a connecting frame, the limiting member passes through the connecting frame, and the first rotation axis passes through the limiting member and extends to the connecting frame. The first rod body and the second rod body of the first telescopic unit are rotationally connected through the first upper connector and the first lower connector. The connection structure is simple and effective, and the first upper connector and the first lower connector also increase the first The stability of the overall structure of the telescopic unit.

Further, the second telescopic unit includes a second rotation shaft, a second upper connector, a third rod connected to the second upper connector, a second lower connector connected to the second upper connector for coaxial rotation, And the fourth rod body connected with the second lower connecting head; when the first plate body and the second plate body are unfolded and used, the second upper connecting head is against the connecting frame. The limit piece extends along the length direction of the seat plate, it is connected with the second telescopic unit, and passes through the connecting frame of the first telescopic unit, which can limit the translation of the first telescopic unit and the second telescopic unit along the extending direction of the limit piece The movement allows the telescopic components to be folded until each rod body is roughly parallel to each other, the overall parts are few, and the volume is small after being folded.

Further, the ends of the first rod body and the third rod body are respectively connected to the left support body in rotation, and the ends of the second rod body and the fourth rod body are respectively connected to the right support body in rotation; The length direction of the plate extends, and the first rotating shaft is covered with a bearing, and the bearing is matched with the travel groove. The setting of the bearing can reduce the frictional force between the stroke groove and the first rotating shaft, so as to ensure the smooth progress of folding or unfolding of the wheelchair.

Further, the seat plate has a limiting groove, and when the first plate body and the second plate body are unfolded and used, at least part of the first telescopic unit and the second telescopic unit are snapped into the limiting groove. The limit groove restricts the first rod body and the second rod body in the unfolded state, and restricts the third rod body and the fourth rod body in the unfolded state, so as to ensure the stability of the seat plate when deployed.

Further, it also includes a support piece that is foldably connected to the left bracket body and the right bracket body. The supporting member can support the waist of the occupant, so that the comfort is improved.

Further, it also includes a pillow portion and/or a push handle portion detachably connected to the left bracket body and the right bracket body. The occupant's head can rest on the pillow part, which is more comfortable; the push handle part can facilitate the push of the wheelchair, and when it faces the seat board, the wheelchair can also be used as a rehabilitation chair, with a more stable center of gravity and safety performance higher.

Further, the left bracket body includes a handrail, a vertical section connected to the seat plate, and a connecting section bent and extended from the vertical section, and the front left wheel and the rear left wheel of the left wheel assembly are respectively connected to the vertical section and the connecting section; The arm means, the vertical section and the connecting section are integrally formed; the rear left wheel is provided with auxiliary wheels. The overall structure of the left bracket body is simple, and the support is stable. After the seat plate is folded, the left bracket body and the right bracket body can be stored close together, and the storage volume is small; each part of the left bracket body is integrally formed, with high structural stability, which reduces assembly parts. The number of components, moreover, the bracket does not fold in the height direction when it is folded, and the overall height remains unchanged. If the person with the same movement does the folding by himself, even after folding, it can still support the human body, avoiding the bending operation.

Further, it also includes a pedal assembly, which includes a hanging groove connected to the bracket, an adapter, and a foot pedal, the foot pedal has a cylindrical section, and the inner part of the adapter is formed to fit with the hanging groove. The protrusion, the installation channel for the cylindrical section to be inserted, and the L-shaped through groove on the side wall of the installation channel. The cylindrical section has a lock pin and is abutted against the elastic piece. The elastic piece is abutted against the adapter piece. The locking pin can be moved in the L-shaped through groove to fold or expand the pedal. The pedal assembly can also be folded, and the folding operation is simple, and it can be kept in the folded state or in the unfolded state without an additional locking structure.

The beneficial effect of the present invention is that the telescopic assembly forms a strong supporting effect on the seat plate, the seat plate has higher stability and better comfort; the seat plate is designed to be folded and stored in the width direction, and the bracket does not need to be folded and stored , the overall structure is simplified, and the structural stability of the bracket is guaranteed; the folding structure of the telescopic component is simple and easy to operate.

Description of drawings

Fig. 1 is a perspective view 1 of the present invention, at this time, the push handle is away from the seat plate.

Fig. 2 is a second perspective view of the present invention, at this time, the push handle is away from the seat plate.

Fig. 3 is a three-dimensional view of the present invention, at this time, the push handle is facing the seat plate.

Fig. 4 is a perspective view of the folded state of the present invention.

Fig. 5 is a three-dimensional structural schematic diagram 1 of the present invention without the seat board and the supporting member.

Fig. 6 is a schematic diagram of the three-dimensional structure of the present invention without the seat plate and the support member II.

Fig. 7 is a schematic perspective view of the three-dimensional structure of the present invention without the seat board, the pillow part and the supporting member.

Fig. 8 is a perspective view of the structure of the second board body and the supporting member without the seat board in the present invention.

FIG. 9 is an enlarged view of the structure at A in FIG. 8 .

Fig. 10 is a schematic diagram of the bottom three-dimensional structure of the present invention.

Fig. 11 is a schematic diagram of the exploded structure of the telescopic assembly in the present invention.

Fig. 12 is a schematic diagram of a partial exploded structure of the pedal assembly of the present invention.

FIG. 13 is an enlarged view of the structure at B in FIG. 12 .

Fig. 14 is a schematic perspective view of the three-dimensional structure of the adapter in the present invention.

detailed description

In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

As shown in Figures 1 and 2, a folding wheelchair includes a bracket 1, a seat plate 3, and a telescopic assembly 4 arranged at the bottom of the seat plate 3. The bracket 1 includes a left bracket body 11 and a right bracket body 12, and the left bracket body 11 Connected with left wheel assembly 21, this left wheel assembly 21 comprises front left wheel 211 and rear left wheel 212, is connected with right wheel assembly 22 on right support body 12, and this right wheel assembly 22 comprises front right wheel 221 and rear right wheel 222.

The seat plate 3 includes a first plate body 31 and a second plate body 32 which are rotatably connected, and the first plate body 31 is rotatably connected to the left support body 11 , and the second plate body 32 is rotatably connected to the right support body 12 . In this embodiment, both the first plate body 31 and the second plate body 32 are rectangular structures.

As shown in Figure 5, Figure 6, and Figure 10, the telescopic assembly 4 includes a first telescopic unit 5, a second telescopic unit 6, and a stopper 7 with a stroke groove 71, the first telescopic unit 5 is V-shaped as a whole, Moreover, the included angle of the V shape is variable, and the second telescopic unit 6 is also V-shaped with a variable included angle as a whole, and the openings of the first telescopic unit 5 and the second telescopic unit 6 face opposite directions. The limiting member 7 is connected to the first telescopic unit 5 , and part of the second telescopic unit 6 extends into the travel groove 71 of the limiting member 7 .

When the first plate body 31 and the second plate body 32 are unfolded for use, that is, when the first plate body 31 and the second plate body 32 are approximately on the same level, the ends of the first telescopic unit 5 and the second telescopic unit 6 stacked up and down, and set close to the center of the seat plate 3, the up and down stacking here is not necessarily completely overlapping, but roughly close to overlapping up and down, the V-shaped of the first telescopic unit 5 and the second telescopic unit 6 are all in the Open at a large angle; when the first plate body 31 and the second plate body 32 are rotated and folded, specifically, in this embodiment, the side connecting the first plate body 31 and the second plate body 32 is folded upwards, The V-shaped included angle of the first telescopic unit 5 is reduced, and its closed end moves toward the rear side of the seat plate 3, and the V-shaped included angle of the second telescopic unit 6 is also reduced, and the second telescopic unit 6 slides along the stroke groove 71, and its The closed end moves toward the front side of the seat plate 3 .

In order to keep the first telescopic unit 5 and the second telescopic unit 6 in the unfolded state, it also includes a locking unit 8, which is rotatably connected to the seat plate 3, and is provided with a locking protrusion that can abut against the second telescopic unit 6 81 , as shown in FIG. 5 , that is, the locking protrusion 81 catches the second telescopic unit 6 upwards, so that the second telescopic unit 6 fits the first telescopic unit 5 in the direction of the seat plate 3 as much as possible.

Specifically, as shown in Fig. 5-Fig. 9 and Fig. 11, the first telescopic unit 5 includes a first rotating shaft 51, a first upper connecting head 52, a first rod body 53 connected with the first upper connecting head 52, and a first An upper connecting head 52 is connected to the first lower connecting head 54 by coaxial rotation, and a second rod body 55 connected to the first lower connecting head 54. The above-mentioned first upper connecting head 52 and the first lower connecting head 54 are connected by the first rotation The shaft 51 is connected in rotation. The end of the first rod body 53 is connected to the left bracket body 11 in rotation, and the end of the second rod body 55 is connected to the right bracket body 12 in rotation.

The second telescopic unit 6 includes a second rotating shaft 61, a second upper connecting head 62, a third rod body 63 connected to the second upper connecting head 62, and a second lower connecting head connected to the second upper connecting head 62 for coaxial rotation. 64 , and the fourth rod body 65 connected with the second lower connecting head 64 , the second upper connecting head 62 and the second lower connecting head 64 are rotationally connected through the second rotating shaft 61 . The end of the third rod body 63 is connected to the left support body 11 in rotation, and the end of the fourth rod body 65 is connected to the right support body 12 in rotation. On the second upper connector 62, a locking notch 621 cooperating with the locking protrusion 81 is formed. The width of the locking notch 621 is equivalent to the width of the locking protrusion 81. Its opening faces downward and the upper part is closed, thereby locking The protrusion-stopping portion 81 enters the locking notch 621 from the opening, and abuts against the upper closed end.

The connecting frame 56 is formed by extending below the first lower connecting head 54, the limiting member 7 passes through the connecting frame 56, and the width of the limiting member 7 is approximately equal to the inner width of the connecting frame 56, and the end of the limiting member 7 is in line with the inner width of the connecting frame 56. The second telescopic unit 6 is connected through the second rotating shaft 61 , specifically, it may be connected with the second upper connecting head 62 . The first rotating shaft 51 extends downwards through the stroke slot 71 of the limiting member 7 and is connected to the connecting frame 56 . The limiter 7 extends along the length direction of the seat plate 3, and more is on the rear side of the seat plate 3, in order to reduce the friction between the first rotating shaft 51 and the inner wall of the stroke groove 71, to ensure that the wheelchair is folded or unfolded. To proceed smoothly, the first rotating shaft 51 is sheathed with a bearing 57 , which slides and rolls with the inner wall of the travel groove 71 .

When the first plate body 31 and the second plate body 32 are unfolded and used, the second upper connecting head 62 is against the connecting frame 56, so that the first telescopic unit 5 and the second telescopic unit 6 form a limit, which can be better expanded and formed. Support for seat plate 3. At the same time, a limiting groove 33 can also be formed on the bottom surface of the seat plate 3, and when the first plate body 31 and the second plate body 32 are unfolded for use, the first rod body 53 and the second rod body 55 of the first telescopic unit 5 fall into In the limit slot 33 , that is, the included angle between the first rod body 53 and the second rod body 55 is determined, and no deviation or shaking will occur. Since the second telescopic unit 6 is stacked under the first telescopic unit 5, although the third rod body 63 and the fourth rod body 65 cannot fall into the limiting groove 33, they can be placed between the third rod body 63 and the fourth rod body 65. A sleeve 631 is sheathed on the top, and the sleeve 631 falls into the limiting groove 33 to form a stable limiting effect, and the overall structure is more stable.

In order to improve comfort, the folding wheelchair also includes a support member 13 foldably connected between the left frame body 11 and the right frame body 12, which is made of a flexible material, specifically cloth, and of course, it can also be other materials. structure, as long as it can be folded vertically. Its specific connection method can be a connection form in the prior art such as Velcro.

The folding wheelchair also includes a pillow 14 detachably connected to the left support body 11 and the right support body 12, which includes a U-shaped support 141, and a headrest 142 connected to the U-shaped support 141, in the height direction of the U-shaped support 141. A plurality of installation holes 143 are opened.

The folding wheelchair also includes a push handle portion 15 detachably connected to the left bracket body 11 and the right bracket body 12. Specifically, as shown in FIG. 7, an adapter sleeve 151 is connected to the top of the left bracket body 11 and the right bracket body 12 The push handle part 15 has a 7-shaped structure, one end of which can be inserted into the adapter sleeve 151 . When the push handle portion 15 faces the seat plate 3, the wheelchair can be used as a rehabilitation trolley, as shown in FIG. When the push hand portion 15 is away from the seat plate 3, people can hold the push handle portion 15 to push the wheelchair, as shown in Figure 2, and the rehabilitation trainer is sitting on the wheelchair at this moment.

In order to adjust the relative height of the pillow portion 14, a locking key 152 is rotated and connected to the push handle portion 15, and a positioning sleeve 153 is provided on the outer cover of the U-shaped support 141, and a perforation is formed on the positioning sleeve 153, and the locking column on the locking key 152 can be Insert the installation holes 143 of different heights after passing through the holes, so as to realize the adjustment of the height of the pillow part 14 .

As shown in Figure 7, the left bracket body 11 includes a substantially horizontally extending armrest 111, a vertical section 112 connected to the seat plate 3, and a connecting section 113 bent and extended from the vertical section 112 to the rear. The front of the left wheel assembly 21 The left wheel 211 and the rear left wheel 212 are respectively connected to the vertical section 112 and the connecting section 113, and the armrest section 111, the vertical section 112 and the connecting section 113 can be integrally formed. In order to improve stability, an auxiliary wheel 213 is provided on the rear left wheel 212 . The right support body 12 is arranged symmetrically with the left support body 11, and details are not repeated here.

As shown in Figures 12-14, it also includes a hanging groove 91 connected to the bottom end of the right bracket body 12, an adapter 92, and a pedal 93, the pedal 93 has a cylindrical section 931, and the adapter 92 is formed inside The protrusion 921 that can be inserted into the hanging groove 91 from top to bottom, the installation channel 922 for the lateral insertion of the cylindrical section 931, and the L-shaped through groove 923 on the side wall of the installation channel 922, the cylindrical section 931 has a lock pin 932, And offset against the elastic piece 953, the elastic piece 953 is offset against the inside of the adapter piece 92, the lock pin 932 passes through the L-shaped through groove 923, and can move in the L-shaped through groove 923, so that the pedal 93 is folded or unfolded . Specifically, when the pedal 93 is in the unfolded state, the lock pin 932 falls on the end of the lateral part of the L-shaped through groove 923, and an external force is applied to move the pedal 93 backward, that is, to the direction where the rear wheel is located, so that the lock The pin 932 breaks away from the transverse part of the L-shaped through groove 923 and enters the longitudinal part, and then applies an external force to turn the pedal 93 clockwise or counterclockwise, so that the locking pin 932 enters the end of the longitudinal part, and the pedal 93 is in a retracted state, and due to Due to the elastic force of the elastic member 953, it can be kept in the folded state.

When the folding wheelchair needs to be folded to the state shown in Figure 4, one end of the pillow part 14 is separated from the left bracket body 11 or the right bracket body 12, and the pedal assembly 9 is rotated to be folded; apply external force to rotate the locking unit 8, Make the locking protrusion 81 disengage from the locking notch 621, at this time the locking of the seat plate 3 and the telescopic assembly 4 is released, and the connecting side of the first plate body 31 and the second plate body 32 is arched upwards and folded, with this At the same time, the first rod body 53 and the second rod body 55 of the first telescopic unit 5 rotate and retract, the third rod body 63 and the fourth rod body 65 of the second telescopic unit 6 rotate and retract, and the second telescopic unit 6 slides along the travel groove 71 , to realize the folding and gathering of the seat plate 3 in the width direction, and the left bracket body 11 and the right bracket body 12 are close to being gathered.

The above specific embodiments are used to explain the present invention, rather than to limit the present invention. Within the spirit of the present invention and the protection scope of the claims, any modification and change made to the present invention will fall into the protection scope of the present invention.

Claims (10)

1. A folding wheelchair, characterized in that, comprising: The bracket (1) includes a left bracket body (11) and a right bracket body (12), which are respectively connected with a left wheel assembly (21) and a right wheel assembly (22); The seat plate (3) includes a first plate body (31) and a second plate body (32) that are rotatably connected, and the first plate body (31) is rotatably connected to the left bracket body (11), and the second plate body (32) ) is rotationally connected with the right support body (12); The telescopic assembly (4) is arranged at the bottom of the seat plate (3), and it includes a first telescopic unit (5), a second telescopic unit (6), and a stopper (7) with a travel groove (71), The stopper (7) is connected to the second telescopic unit (6), and part of the first telescopic unit (5) extends into the stroke groove (71); the first telescopic unit (5) and the second telescopic unit (5) The unit (6) is V-shaped, and the included angle is variable; When the first plate body (31) and the second plate body (32) are unfolded for use, the ends of the first telescopic unit (5) and the second telescopic unit (6) are stacked up and down, and close to the seat plate (3 ) center setting; when the first plate body (31) and the second plate body (32) are rotated and folded, the second telescopic unit (6) slides along the travel groove (71), and the first telescopic unit (5 ) and the V-shaped angle of the second telescopic unit (6) are all reduced. 2. The folding wheelchair according to claim 1, characterized in that: it also includes a locking unit (8), which is rotatably connected to the seat plate (3), and is provided with a lock that can offset the second telescopic unit (6) Convex stop (81). 3. The folding wheelchair according to claim 1, characterized in that: the first telescopic unit (5) comprises a first rotating shaft (51), a first upper connector (52), and a first upper connector ( 52) the first rod body (53) connected, the first lower connector (54) connected to each other with the coaxial rotation of the first upper connector (52), and the second rod body (54) connected with the first lower connector (54) 55), the first lower connection head (54) extends to form a connection frame (56), the limiter (7) passes through the connection frame (56), and the first rotation shaft (51) passes through the limiter (7) extends to connection frame (56). 4. The folding wheelchair according to claim 3, characterized in that: the second telescopic unit (6) comprises a second rotating shaft (61), a second upper connector (62), and a second upper connector ( 62) the third rod body (63) connected, the second lower connector (64) connected with the second upper connector (62) coaxial rotation, and the fourth rod body (64) connected with the second lower connector (64) 65); when the first plate body (31) and the second plate body (32) are unfolded for use, the second upper connector (62) abuts against the connection frame (56). 5. The folding wheelchair according to claim 4, characterized in that: the ends of the first rod body (53) and the third rod body (63) are respectively connected to the left support body (11) in rotation, and the second rod body (55), the ends of the fourth rod body (65) are connected to the right support body (12) in rotation; 51) the overcoat is provided with a bearing (57), and the bearing (57) cooperates with the stroke groove (71). 6. The folding wheelchair according to claim 1, characterized in that: the seat plate (3) has a limiting groove (33), when the first plate body (31) and the second plate body (32) are unfolded and used , at least part of the first telescopic unit (5) and the second telescopic unit (6) snap into the limiting groove (33). 7. The folding wheelchair according to claim 1, further comprising a support (13) foldably connected to the left frame body (11) and the right frame body (12). 8. The folding wheelchair according to claim 1, characterized in that: it also includes a pillow portion (14) and/or a push handle portion (15) detachably connected to the left frame body (11) and the right frame body (12) . 9. The folding wheelchair according to claim 1, characterized in that: the left bracket body (11) includes a hand arm (111), a vertical section (112) connected to the seat plate (3), and a self-vertical The connecting section (113) that the section (112) bends extends, and the front left wheel (211) and the rear left wheel (212) of the left wheel assembly (21) are respectively connected with the vertical section (112) and the connecting section (113); (111), the vertical section (112) and the connecting section (113) are integrally formed; the rear left wheel (212) is provided with an auxiliary wheel (213). 10. The folding wheelchair according to claim 9, characterized in that: it also includes a footrest assembly (9), which includes a hanging groove (91) connected to the bracket (1), an adapter (92), and a footrest plate (93), the pedal (93) has a cylindrical section (931), and the inside of the adapter (92) forms a protrusion (921) that can cooperate with the hanging groove (91) for the cylindrical section (931) is inserted into the installation channel (922), and the L-shaped through groove (923) on the side wall of the installation channel (922), the cylindrical section (931) has a lock pin (932), and is connected with the elastic member ( 933) offset, the elastic piece (933) is offset against the adapter (92), and the lock pin (932) can be moved in the L-shaped through groove (923) to gather or expand the pedal (93).

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