Foot support folding structure of wheelchair

Abstract

The utility model relates to the technical field of wheelchairs, in particular to a foot support folding structure of a wheelchair, which comprises two fixing pipes and a mounting rack, a rotating shaft and a support component are arranged on the outer side of each fixing pipe, a screw is arranged above each fixing pipe through a bearing, a knob is arranged on each screw, each screw extends into the corresponding fixing pipe, and the mounting rack is arranged on the fixing pipe. An L-shaped rod is arranged below the fixing pipe in a sliding mode, the vertical portion of the L-shaped rod extends into the fixing pipe, a threaded groove is formed in the L-shaped rod, a plurality of limiting protrusions are arranged on the outer side of the L-shaped rod, a plurality of limiting grooves are formed in the inner side of the fixing pipe, and a pedal assembly is arranged on the horizontal portion of the L-shaped rod. The length of the L-shaped rod can be adjusted under the action of the threaded groove, a user only needs to rotate the screw rod in the process, the operation process is simplified, people having difficulty in moving can more easily adjust the length of the L-shaped rod, and body injuries caused by improper operation or lack of physical strength are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a wheelchair technology field especially relates to a foot support folding structure of wheelchair. BACKGROUND

[0002] The foot support folding structure of the existing wheelchair is adjusted in length and angle easily according to the height and comfort of the user in the use process, and the wheelchair may not provide the best use experience for the users with different height and comfort requirements, and the calf of the user is not supported in the use process, which reduces the user experience satisfaction.

[0003] The prior art patent CN221534441U discloses a foot support folding structure of a wheelchair, which comprises a mounting frame, a connecting part is installed on the top of the mounting frame, the connecting part comprises a connecting block, a connecting rod and a rotating wheel, the bottom of the rotating wheel is provided with an adjusting part, the adjusting part comprises a fixed tube, a supporting plate, an L-shaped rod and a limiting bolt, an angle adjusting assembly is arranged between the fixed tube and the mounting frame, the advantages are that the extension end of the two-way electric push rod is used to push the fixed tube to adjust the angle of the foot support, the best use experience is provided for the users with different height and comfort requirements, the length of the L-shaped rod extending out of the fixed tube can be adjusted by controlling the tightness of the limiting bolt, the use requirements of the users with different height for the length of the foot support are met, and the calf of the user can be supported in the use process to improve the user experience satisfaction.

[0004] However, in the prior art, the L-shaped rod needs to be pulled outward to the appropriate length before being adjusted in length, and then the L-shaped rod is resisted by the limiting bolt to realize fixation, which is too complicated and is not convenient for the operation of the people with difficulty in movement. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a foot support folding structure of a wheelchair, and aims at solving the technical problem that the L-shaped rod needs to be pulled outward to the appropriate length before being adjusted in length in the prior art, and then the L-shaped rod is resisted by the limiting bolt to realize fixation, which is too complicated and is not convenient for the operation of the people with difficulty in movement.

[0006] In order to achieve the above object, the utility model discloses a foot rest folding structure of wheelchair, including two fixed tubes and mounting frame, the outer side of fixed tube is provided with the pivot and the lifting assembly, the upper of fixed tube is provided with screw rod through bearing, be provided with knob on screw rod, and screw rod extends to fixed tube, the lower of fixed tube is slidably provided with L -shaped rod, and the vertical part of L -shaped rod extends to fixed tube, L -shaped rod has screw groove, the outer side of L -shaped rod is provided with a plurality of limit protrusions, the inner side of fixed tube has a plurality of limit recess, the horizontal part of L -shaped rod is provided with pedal assembly, screw rod is connected with the L -shaped rod screw, and be located in screw groove, and the limit protrusion is located in the limit recess, two fixed tubes are rotatably connected with mounting frame through pivot, and symmetrically set up on mounting frame.

[0007] Wherein, the outer side of the fixed tube is also provided with a first mounting block, a first steering head is rotatably arranged in the first mounting block, both ends of the mounting frame are provided with a second mounting block, a second steering head is rotatably arranged in the second mounting block, and a power member is arranged between the first steering head and the second steering head.

[0008] Wherein, the pivot, the lifting assembly and the first mounting block are sequentially arranged on the outer side of the fixed tube from top to bottom.

[0009] Wherein, the lifting assembly includes a lifting plate, a first half rectangular frame and a second half rectangular frame, the outer side of the fixed tube is provided with a rectangular block, and the rectangular block is located between the first mounting block and the pivot, the lifting plate is provided with a buffer pad, the lifting plate is fixedly connected with the first half rectangular frame and located on one side of the first half rectangular frame, the first half rectangular frame and the second half rectangular frame are both sleeved on the outer side of the rectangular block and are in a surrounding shape, and are fixedly connected by bolts.

[0010] Wherein, the pedal assembly includes a pedal body, a fastening sleeve and a square long sleeve, the pedal body is provided with a non-slip pad, the fastening sleeve has an internal thread, the horizontal part of the L-shaped rod has an external thread, the horizontal part of the L-shaped rod is provided with a square long block, the pedal body is arranged on the outer side of the square long sleeve, the fastening sleeve is threadedly connected with the L-shaped rod and is sleeved on the external thread, and abuts against the square long sleeve, the square long sleeve is slidably connected with the square long block and is sleeved on the square long block.

[0011] The utility model discloses a foot support folding structure of wheelchair, including two fixed tubes and mounting bracket, the outside of fixed tube is provided with rotating shaft and holds up subassembly, the upper of fixed tube is provided with screw rod through bearing, be provided with knob on screw rod, and the screw rod extends to the fixed tube, the below of fixed tube is slidly provided with L -shaped link, and the vertical part of L -shaped link extends to the fixed tube, the L -shaped link has screw groove, the outside of L -shaped link is provided with a plurality of limit protrusions, the inside of fixed tube has a plurality of limit recess, the horizontal part of L -shaped link is provided with pedal assembly, through the screw rod screw drive L -shaped link, the length of L -shaped link is adjusted under the action of screw groove, this process only needs that user rotates screw rod, and the design simplifies operation procedure, and the person who can be more easily completes the length adjustment of L -shaped link of the person who moves inconveniently, avoids the physical injury caused due to improper operation or physical strength and so on, and in this way, the technical problem that the person who moves inconveniently is inconvenient to operate is solved when the length of L -shaped link is adjusted, needs to pull out L -shaped link to the suitable length first, then through the limit bolt of L -shaped link and so on and so on. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, below will be to the drawing needed to use in the embodiment or prior art description simple introduction, obviously, the drawing in the following description only some embodiments of the utility model, for those skilled in the art, under the premise of not paying creative labor, can also obtain other drawings according to these drawings.

[0013] Figure 1 It is the three-dimensional view of the utility model.

[0014] Figure 2 It is the front view of the utility model.

[0015] Figure 3 It is the Figure 2 sectional view of A-A line in.

[0016] Figure 4 It is the Figure 2 sectional view of B-B line in.

[0017] Figure 5 It is the Figure 4 local enlarged view of C in.

[0018] 1-fixed tube, 2-mounting frame, 3-rotary shaft, 4-bearing, 5-screw rod, 6-knob, 7-L-shaped rod, 8-thread groove, 9-limiting protrusion, 10-limiting recess, 11-first mounting block, 12-first steering head, 13-second mounting block, 14-second steering head, 15-power element, 16-lifting plate, 17-first half rectangular frame, 18-second half rectangular frame, 19-rectangular block, 20-cushion, 21-pedal body, 22-fastening sleeve, 23-square long sleeve, 24-non-slip pad, 25-square long block. DETAILED DESCRIPTION

[0019] The embodiments of the present application are described in detail below with reference to the accompanying drawings. The embodiments described below are examples for explaining the present application and should not be construed as limiting the present application.

[0020] Please refer to Figures 1-5 The present application provides a foot support folding structure of a wheelchair, which comprises two fixed tubes 1 and a mounting frame 2. The outer side of the fixed tube 1 is provided with a rotary shaft 3 and a lifting assembly. The upper part of the fixed tube 1 is provided with a screw rod 5 through a bearing 4. The screw rod 5 is provided with a knob 6, and the screw rod 5 extends into the fixed tube 1. The lower part of the fixed tube 1 is provided with an L-shaped rod 7 in a sliding manner, and the vertical part of the L-shaped rod 7 extends into the fixed tube 1. The L-shaped rod 7 has a thread groove 8. The outer side of the L-shaped rod 7 is provided with a plurality of limiting protrusions 9. The inner side of the fixed tube 1 has a plurality of limiting recesses 10. The horizontal part of the L-shaped rod 7 is provided with a pedal assembly. The screw rod 5 is threadedly connected with the L-shaped rod 7 and located in the thread groove 8. The limiting protrusions 9 are located in the limiting recesses 10. The two fixed tubes 1 are rotationally connected with the mounting frame 2 through the rotary shaft 3 and symmetrically arranged on the mounting frame 2. The L-shaped rod 7 is threadedly driven by the screw rod 5. The length of the L-shaped rod 7 is adjusted under the action of the thread groove 8. In this process, only the user needs to rotate the screw rod 5. The present design simplifies the operation process, so that people with difficulty in movement can more easily adjust the length of the L-shaped rod 7, and avoid physical injury caused by improper operation or physical exhaustion. In this way, the technical problem that it is too cumbersome for people with difficulty in movement to operate is solved, i.e., the L-shaped rod 7 needs to be pulled out to a suitable length first, and then the L-shaped rod 7 is resisted by a limiting bolt to achieve fixation.

[0021] The outer side of the fixed pipe 1 is further provided with a first mounting block 11, the first mounting block 11 is rotatably provided with a first steering head 12, both ends of the mounting rack 2 are provided with a second mounting block 13, the second mounting block 13 is rotatably provided with a second steering head 14, the first steering head 12 and the second steering head 14 are provided with a power element 15, the power element 15 of the design is a bidirectional electric push rod, the extension length of the two output ends of the bidirectional electric push rod is controlled to adjust the angle of the fixed pipe 1, and the fixed pipe 1 and the mounting rack 2 can automatically change the angle under the action of the first steering head 12 and the second steering head 14, so as to adjust the angle of the foot support, and when it is necessary to store, the foot support can be folded, and the best use experience is provided for users with different heights and comfort requirements.

[0022] Secondly, the rotating shaft 3, the lifting assembly and the first mounting block 11 are sequentially arranged on the outer side of the fixed pipe 1 from top to bottom.

[0023] Thirdly, the lifting assembly comprises a lifting plate 16, a first half-rectangular frame 17 and a second half-rectangular frame 18, the outer side of the fixed pipe 1 is provided with a rectangular block 19, the rectangular block 19 is located between the first mounting block 11 and the rotating shaft 3, the lifting plate 16 is provided with a buffer pad 20, the lifting plate 16 is fixedly connected with the first half-rectangular frame 17 and located on one side of the first half-rectangular frame 17, the first half-rectangular frame 17 and the second half-rectangular frame 18 are both sleeved on the outer side of the rectangular block 19 and are in a surrounding shape and are fixedly connected by bolts, the first half-rectangular frame 17 and the second half-rectangular frame 18 are sleeved on the outer side of the rectangular block 19 and are fastened by bolts, so that the lifting plate 16 can be quickly disassembled and assembled, and the rectangular structure can also avoid the rotation of the lifting plate 16.

[0024] In addition, the pedal assembly comprises a pedal body 21, a fastening sleeve 22 and a square long sleeve 23, the pedal body 21 is provided with an antiskid pad 24, the fastening sleeve 22 has an internal thread, the horizontal part of the L-shaped rod 7 has an external thread, the horizontal part of the L-shaped rod 7 is provided with a square long block 25, the pedal body 21 is arranged on the outer side of the square long sleeve 23, the fastening sleeve 22 is threadedly connected with the L-shaped rod 7 and is sleeved on the external thread and abuts against the square long sleeve 23, the square long sleeve 23 is slidably connected with the square long block 25 and is sleeved on the square long block 25, the square long sleeve 23 is slid into the square long block 25, and then the fastening sleeve 22 is threadedly sleeved on the external thread, so that the pedal body 21 can be quickly disassembled and assembled.

[0025] When the length of the L-shaped rod 7 is adjusted, the knob 6 is rotated clockwise, the knob 6 drives the screw rod 5, the screw rod 5 rotates under the action of the bearing 4, and the setting of the limiting protrusion 9 and the limiting groove 10 can effectively prevent the L-shaped rod 7 from rotating with the screw rod 5, and the L-shaped rod 7 slowly moves out of the fixed pipe 1 under the action of the threaded groove 8, so that the length adjustment is realized, and in this way, the technical problem that the L-shaped rod 7 needs to be pulled out to a suitable length and then abuts against the L-shaped rod 7 through a limiting bolt to realize fixation when the length of the L-shaped rod 7 is adjusted is solved.

[0026] The above only discloses a preferred embodiment of the utility model, of course, cannot limit the right scope of the utility model, and the person skilled in the art can understand that all or part of the processes of the above-mentioned embodiments are realized, and equivalent changes made according to the utility model claims still belong to the range covered by the utility model.

Claims

1. A folding structure of a wheelchair footrest, characterized in that, It comprises two fixed tubes and a mounting frame, the outer side of the fixed tube is provided with a rotating shaft and a lifting assembly, the upper part of the fixed tube is provided with a screw rod through a bearing, the screw rod is provided with a knob, and the screw rod extends into the fixed tube, the lower part of the fixed tube is provided with an L-shaped rod in a sliding manner, and the vertical part of the L-shaped rod extends into the fixed tube, the L-shaped rod has a threaded groove, the outer side of the L-shaped rod is provided with a plurality of limiting protrusions, the inner side of the fixed tube has a plurality of limiting grooves, the horizontal part of the L-shaped rod is provided with a pedal assembly, the screw rod is threadedly connected with the L-shaped rod and located in the threaded groove, and the limiting protrusions are located in the limiting grooves, and the two fixed tubes are rotationally connected with the mounting frame through the rotating shaft and symmetrically arranged on the mounting frame.

2. The folding structure of a wheelchair footrest according to claim 1, characterized in that, the outer side of the fixed tube is further provided with a first mounting block, the first mounting block is rotationally provided with a first steering head, both ends of the mounting frame are provided with a second mounting block, the second mounting block is rotationally provided with a second steering head, and the first steering head and the second steering head are provided with a power member.

3. The folding structure of a wheelchair footrest according to claim 2, characterized in that, the rotating shaft, the lifting assembly and the first mounting block are sequentially arranged on the outer side of the fixed tube from top to bottom.

4. The folding structure of a wheelchair footrest according to claim 3, characterized in that, the lifting assembly comprises a lifting plate, a first half-rectangular frame and a second half-rectangular frame, the outer side of the fixed tube is provided with a rectangular block, and the rectangular block is located between the first mounting block and the rotating shaft, the lifting plate is provided with a buffer pad, the lifting plate is fixedly connected with the first half-rectangular frame and located on one side of the first half-rectangular frame, and the first half-rectangular frame and the second half-rectangular frame are both sleeved on the outer side of the rectangular block and are in a surrounding shape and fixedly connected through bolts.

5. The folding structure of a wheelchair footrest according to claim 4, characterized in that, the pedal assembly comprises a pedal body, a fastening sleeve and a square long sleeve, the pedal body is provided with an anti-skid pad, the fastening sleeve has an internal thread, the horizontal part of the L-shaped rod has an external thread, the horizontal part of the L-shaped rod is provided with a square long block, the pedal body is arranged on the outer side of the square long sleeve, the fastening sleeve is threadedly connected with the L-shaped rod and sleeved on the external thread, and abuts against the square long sleeve, and the square long sleeve is slidably connected with the square long block and sleeved on the square long block.

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