Wheelchair pedal quick release structure

Abstract

The utility model relates to a wheelchair pedal quick release structure which comprises a left frame assembly and a right frame assembly, a seat folding assembly is connected between the left frame assembly and the right frame assembly, the front end of the left frame assembly and the front end of the right frame assembly are connected with a pedal assembly, the pedal assembly comprises a foot release frame and a pedal plate, and the foot release frame is connected with the pedal plate. The pedal plate is connected to the front end of the foot dismounting frame, an L-shaped buckling groove is formed in the rear end of the foot dismounting frame, buckling heads are arranged at the positions, corresponding to the L-shaped buckling groove, of the front end of the left frame assembly and the front end of the right frame assembly, and the L-shaped buckling groove and the buckling heads are in sliding buckle fit along the track. The pedal assembly is connected with the left frame assembly and the right frame assembly in a quick disassembly and assembly manner; according to the wheelchair, the pedal assembly can be independently separated from the frame, the occupied space of the wheelchair during transportation and storage is reduced, locking is conducted through matching of the L-shaped buckling grooves and the buckling heads, the pedal assembly is prevented from loosening, external tool operation is not needed during dismounting, and dismounting can be completed with one hand.

Description

Technical Field

[0001] The utility model relates to the field of folding wheelchairs, in particular to a wheelchair pedal quick-release structure. Background Art

[0002] The current foldable wheelchair structure is shown in the Chinese patent document, a wheelchair with foldable pedals with patent number CN202222259464.7, which mainly includes a seat frame, one end of the seat frame is rotatably connected to a pedal frame. In this prior art, the pedal frame is fixedly connected to one end of the seat frame. When the wheelchair is folded, the pedal frame can only be folded to reduce the space occupied during transportation and storage, but the problem of increasing the weight of the wheelchair is inevitable. Some foldable wheelchairs use a connecting assembly to enable the pedal frame to be disassembled from the seat frame, but the connecting assembly has a complex structure and basically requires the user to use both hands for disassembly and assembly, which is extremely inconvenient to operate. Therefore, the applicant provides a new solution to the above-mentioned prior art problems by improving and perfecting the prior art for consumers to choose and use. Summary of the invention

[0003] The utility model aims to provide a wheelchair pedal quick-release structure which has a simple and reasonable structure, is easy to install and has a stable structure.

[0004] The wheelchair footrest quick-release structure comprises a left frame assembly and a right frame assembly, a seat folding assembly is connected between the left frame assembly and the right frame assembly, and the front ends of the left frame assembly and the right frame assembly are connected with a footrest assembly, the footrest assembly comprises a detachable footrest and a foot pedal, the foot pedal is connected to the front end of the detachable footrest, the rear end of the detachable footrest is provided with an L-shaped buckle groove, the front ends of the left frame assembly and the right frame assembly are provided with buckle joints corresponding to the L-shaped buckle groove, and the L-shaped buckle groove and the buckle joint are slidably matched along a track to form a quick-release connection between the footrest assembly and the left frame assembly and the right frame assembly.

[0005] The purpose of the utility model can also be solved by the following technical measures:

[0006] As a more specific solution, the rear end of the detachable tripod is integrally connected with a U-shaped clamp, the U-shaped clamp is extended upward and downward, and an L-shaped buckle groove is respectively provided on two clamping walls on opposite sides of the U-shaped clamp.

[0007] As a further solution, the left frame assembly and the right frame assembly both include a frame, and the front end of the frame is provided with a longitudinal rod section, the U-shaped clamp is clamped on the longitudinal rod section, and a pin is passed through the longitudinal rod section, and the two ends of the pin protrude from the longitudinal rod section on opposite sides and form a buckle joint that cooperates with the corresponding L-shaped buckle groove.

[0008] As a further solution, a U-shaped groove is formed in the U-shaped clamp, and the depth of the U-shaped groove is greater than the width; the longitudinal rod segment is interference clamped in the U-shaped groove, and the cross-sectional shape of at least the clamped part of the longitudinal rod segment is oblate or elliptical.

[0009] As a further solution, the depth of the U-shaped clamping groove is the same as or close to the width of the clamped portion of the longitudinal rod segment.

[0010] As a further solution, the L-shaped snap-on groove includes a longitudinal groove and a transverse groove, the lower end of the longitudinal groove is connected to the inner end of the transverse groove, the lower end of the longitudinal groove forms a snap-on fixing position, and the outer end of the transverse groove extends toward the rear end of the U-shaped clamp to form a snap-on entrance and exit.

[0011] As a further solution, the detachable tripod is in an arc-shaped structure extending downward, and a hinge shaft is connected to its front end, and one side of the foot pedal is flipped and hinged to the inner side of the detachable tripod through the hinge shaft.

[0012] As a further solution, the left frame assembly and the right frame assembly also include a front guide wheel, a moving wheel, an auxiliary wheel, an armrest frame and a handle frame, wherein the front guide wheel, the moving wheel and the auxiliary wheel are sequentially arranged at the bottom of the frame from front to back, the rear side of the frame is connected to the handle frame, a flexible backrest pad is connected between the two handle frames, and the armrest frame is hinged to the frame.

[0013] As a further solution, the seat folding assembly includes two groups of I-shaped folding frames, the middle of the two groups of I-shaped folding frames are rotatably hinged to each other, the lower ends of the two groups of I-shaped folding frames are respectively hinged to the left and right frames, and a flexible seat cushion is connected between the upper ends of the two groups of I-shaped folding frames.

[0014] As a further solution, an electric drive device consisting of a motor and a reduction gearbox is installed on the frame, the moving wheel is fixedly connected to the output shaft of the electric drive device, a controller for controlling the electric drive device is provided on the armrest frame, and a battery assembly electrically connected to the electric drive device and the controller is provided on one of the frames.

[0015] The beneficial effects of the utility model are as follows:

[0016] The utility model discloses a wheelchair footrest quick-release structure, in which the footrest assembly can be independently separated from the frame, thereby improving the convenience of using the wheelchair and reducing the space occupied during transportation and storage of the wheelchair. The footrest assembly is locked by cooperating with the L-shaped buckle groove and the buckle joint to prevent loosening of the footrest assembly. No external tools are required for disassembly and assembly, and disassembly and assembly can be completed with one hand. The disassembly and assembly are quick and convenient, which greatly improves the convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a schematic structural diagram of an embodiment of the utility model.

[0018] Figure 2 for Figure 1 Enlarged structural diagram at A in the middle.

[0019] Figure 3 This is a schematic diagram of the disassembled structure of the pedal assembly in the utility model.

[0020] Figure 4 It is a schematic diagram of the cross-sectional structure of the U-shaped chuck in the utility model.

[0021] Figure 5 It is a schematic diagram of the L-shaped buckle groove structure in the utility model.

[0022] Figure 6 It is a schematic diagram of the structure of a wheelchair in the utility model. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0024] like Figures 1 to 6 As shown, the wheelchair footrest quick-release structure includes a left frame assembly 1 and a right frame assembly 2, a seat folding assembly 3 is connected between the left frame assembly 1 and the right frame assembly 2, and the front ends of the left frame assembly 1 and the right frame assembly 2 are connected with a footrest assembly 4, the footrest assembly 4 includes a detachable footrest 5 and a foot pedal 6, the foot pedal 6 is connected to the front end of the detachable footrest 5, and the rear end of the detachable footrest 5 is provided with an L-shaped buckle groove 51, and the front ends of the left frame assembly 1 and the right frame assembly 2 are provided with a buckle joint 71 corresponding to the L-shaped buckle groove 51, and the L-shaped buckle groove 51 and the buckle joint 71 are slidably matched along the track, so that the footrest assembly 4 and the left frame assembly 1 and the right frame assembly 2 form a quick-release connection.

[0025] The pedal assembly in this wheelchair can be independently separated from the frame, which improves the convenience of using the wheelchair and reduces the space occupied during transportation and storage of the wheelchair. The pedal assembly 4 is locked by the cooperation of the L-shaped buckle groove 51 and the buckle joint 71 to prevent it from loosening. No external tools are required during disassembly and assembly, and disassembly and assembly can be completed with one hand. Disassembly and assembly are quick and convenient, which greatly improves the convenience of use.

[0026] The rear end of the detachable tripod 5 is integrally connected with a U-shaped clamp 52, which is extended upward and downward, and an L-shaped buckle groove 51 is respectively provided on the two clamping walls on the opposite sides of the U-shaped clamp 52; the left frame assembly 1 or the right frame assembly 2 can be clamped by the U-shaped clamp 52; and the L-shaped buckle groove 51 is conveniently connected to the buckle joint 71.

[0027] The left frame assembly 1 and the right frame assembly 2 both include a frame 8, and a longitudinal rod section 81 is provided at the front end of the frame 8. The U-shaped clamp 52 is clamped on the longitudinal rod section 81, and a pin 7 is passed through the longitudinal rod section 81. The two ends of the pin 7 protrude from the longitudinal rod section 81 on opposite sides and form a buckle joint 71 that cooperates with the corresponding L-shaped buckle groove 51; the longitudinal rod section 81 can lock the pedal assembly 4 through a pair of left and right L-shaped buckle grooves 51 and the buckle joint 71 to prevent the pedal assembly 4 from swinging left and right.

[0028] A U-shaped clamping groove 521 is formed in the U-shaped clamping head 52, and the depth of the U-shaped clamping groove 521 is greater than the width; the longitudinal rod segment 81 is clamped in the U-shaped clamping groove 521 by interference fit, and the cross-section of at least the clamped portion of the longitudinal rod segment 81 is in an oblate or elliptical shape;

[0029] By cooperating the U-shaped clamping groove 521 with the oblate or elliptical longitudinal rod section 81, the pedal assembly 4 can be prevented from swinging left and right, thereby achieving a limiting effect, reducing the stress between the L-shaped buckle groove 51 and the buckle joint 71, and preventing the U-shaped clamp 52 from deforming.

[0030] The depth of the U-shaped clamping groove 521 is the same as or close to the width of the clamped portion of the longitudinal rod segment 81; this structure enables the clamping wall of the U-shaped clamp 52 to wrap the longitudinal rod segment 81, making the connection position between the pedal assembly 4 and the longitudinal rod segment 81 more beautiful and less abrupt.

[0031] The L-shaped buckle groove 51 includes a longitudinal groove 511 and a transverse groove 512. The lower end of the longitudinal groove 511 is connected to the inner end of the transverse groove 512. The lower end of the longitudinal groove 511 forms a buckle fixing position 513. The outer end of the transverse groove 512 extends toward the rear end of the U-shaped clamp 52 to form a buckle entrance 514.

[0032] Through the structure of the above-mentioned L-shaped buckle groove 51, when the user is assembling, when the U-shaped clamp 52 is inserted into the longitudinal rod section 81, the buckle joint 71 slides from the buckle entrance 514 into the transverse groove 512, and then the user presses down the pedal assembly 4 to slide along the longitudinal rod section 81, so that the buckle joint 71 slides into the longitudinal groove 511 until it reaches the buckle fixing position 513, and the installation is completed. When disassembling, the opposite operation can be performed.

[0033] The detachable tripod 5 is in an arc-shaped structure extending downward, and a hinge shaft is connected to its front end, and one side of the foot pedal 6 is flipped and hinged to the inner side of the detachable tripod 5 through the hinge shaft; even if the pedal assembly 4 can be disassembled from the frame as a whole, the foot pedal 6 is foldably connected to the detachable tripod 5, which can further reduce the space occupied by the pedal assembly 4 during transportation and storage.

[0034] The left frame assembly 1 and the right frame assembly 2 also include a front guide wheel 9, a moving wheel 10, an auxiliary wheel 11, an armrest frame 12 and a handle frame 13. The front guide wheel 9, the moving wheel 10 and the auxiliary wheel 11 are sequentially arranged at the bottom of the frame 8 from front to back. The rear side of the frame 8 is connected to the handle frame 13. A flexible backrest pad 14 is connected between the two handle frames 13. The armrest frame 12 is hinged to the frame 8.

[0035] The seat folding assembly 3 includes two groups of I-shaped folding frames 31, the middle of the two groups of I-shaped folding frames 31 are rotatably hinged to each other, the lower ends of the two groups of I-shaped folding frames 31 are hinged to the left and right frames 8 respectively, and a flexible cushion 32 is connected between the upper ends of the two groups of I-shaped folding frames 31; the seat folding assembly 3 with this structure enables the wheelchair to be folded for easy transportation and storage.

[0036] An electric drive device 15 consisting of a motor and a reduction box is installed on the frame 8, the moving wheel 10 is fixedly connected to the output shaft of the electric drive device 15, the armrest frame 12 is provided with a controller 16 for controlling the electric drive device 15, and a battery assembly 17 electrically connected to the electric drive device 15 and the controller 16 is provided on one of the frames 8; the wheelchair can be operated electrically, and the user can control the forward and backward movement of the wheelchair by himself.

[0037] The above is a preferred embodiment of the utility model, which shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. The utility model may have various changes and improvements without departing from the spirit and scope of the utility model, and these changes and improvements fall within the scope of the utility model to be protected, and the scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A wheelchair pedal quick-release structure, comprising a left frame assembly (1) and a right frame assembly (2), a seat folding assembly (3) being connected between the left frame assembly (1) and the right frame assembly (2), and a pedal assembly (4) being connected at the front ends of the left frame assembly (1) and the right frame assembly (2), characterized in that: The pedal assembly (4) comprises a detachable foot frame (5) and a foot pedal (6), wherein the foot pedal (6) is connected to the front end of the detachable foot frame (5), and the rear end of the detachable foot frame (5) is provided with an L-shaped buckle groove (51). The front ends of the left frame assembly (1) and the right frame assembly (2) are provided with buckle joints (71) corresponding to the L-shaped buckle groove (51), and the L-shaped buckle groove (51) and the buckle joint (71) are slidably engaged along a track, so that the pedal assembly (4) and the left frame assembly (1) and the right frame assembly (2) are connected in a quick-disassembly connection.

2. The wheelchair pedal quick-release structure according to claim 1, characterized in that: A U-shaped clamp (52) is integrally connected to the rear end of the dismantling tripod (5). The U-shaped clamp (52) is extended upward and downward, and an L-shaped buckle groove (51) is respectively provided on two clamping walls on opposite sides of the U-shaped clamp (52).

3. The wheelchair pedal quick-release structure according to claim 2, characterized in that: The left frame assembly (1) and the right frame assembly (2) both include a frame (8), the front end of each of the frames (8) being provided with a longitudinal rod section (81), the U-shaped clamp (52) being clamped on the longitudinal rod section (81), and a latch (7) being passed through the longitudinal rod section (81), the two ends of the latch (7) protruding from opposite sides of the longitudinal rod section (81) and forming a buckle joint (71) that cooperates with a corresponding L-shaped buckle groove (51).

4. The wheelchair pedal quick-release structure according to claim 3, characterized in that: A U-shaped clamping groove (521) is formed in the U-shaped clamping head (52), and the depth of the U-shaped clamping groove (521) is greater than the width; the longitudinal rod segment (81) is interference clamped in the U-shaped clamping groove (521), and the cross-sectional shape of at least the clamped portion of the longitudinal rod segment (81) is oblate or elliptical.

5. The wheelchair pedal quick-release structure according to claim 4, characterized in that: The depth of the U-shaped clamping groove (521) is the same as or close to the width of the clamped portion of the longitudinal rod segment (81).

6. The wheelchair pedal quick-release structure according to claim 1, characterized in that: The L-shaped buckle groove (51) comprises a longitudinal groove (511) and a transverse groove (512); the lower end of the longitudinal groove (511) is connected to the inner end of the transverse groove (512); the lower end of the longitudinal groove (511) forms a buckle fixing position (513); and the outer end of the transverse groove (512) extends toward the rear end of the U-shaped clamp (52) to form a buckle entrance (514).

7. The wheelchair pedal quick-release structure according to claim 1, characterized in that: The dismantling tripod (5) is in the form of an arc-shaped structure extending downward, and a hinge shaft is connected to its front end, and one side of the foot pedal (6) is flipped and hinged to the inner side of the dismantling tripod (5) via the hinge shaft.

8. The wheelchair pedal quick-release structure according to claim 3, characterized in that: The left frame assembly (1) and the right frame assembly (2) further include a front guide wheel (9), a moving wheel (10), an auxiliary wheel (11), an armrest frame (12) and a handle frame (13); the front guide wheel (9), the moving wheel (10) and the auxiliary wheel (11) are sequentially arranged at the bottom of the frame (8) from front to back; the handle frame (13) is connected to the rear side of the frame (8); a flexible backrest pad (14) is connected between the two handle frames (13); and the armrest frame (12) is hinged to the frame (8).

9. The wheelchair pedal quick-release structure according to claim 3, characterized in that: The seat folding assembly (3) comprises two groups of I-shaped folding frames (31), the middle of the two groups of I-shaped folding frames (31) are rotatably hinged to each other, the lower ends of the two groups of I-shaped folding frames (31) are respectively hinged to the left and right vehicle frames (8), and a flexible seat cushion (32) is connected between the upper ends of the two groups of I-shaped folding frames (31).

10. The wheelchair pedal quick-release structure according to claim 8, characterized in that: An electric drive device (15) consisting of a motor and a reduction gearbox is mounted on the vehicle frame (8); the moving wheel (10) is fixedly connected to an output shaft of the electric drive device (15); a controller (16) for controlling the electric drive device (15) is disposed on the armrest frame (12); and a battery assembly (17) electrically connected to the electric drive device (15) and the controller (16) is disposed on one of the vehicle frames (8).

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