CN113952129B - Wheelchair with adjustable footrest - Google Patents
Wheelchair with adjustable footrest Download PDFInfo
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- CN113952129B CN113952129B CN202110169416.6A CN202110169416A CN113952129B CN 113952129 B CN113952129 B CN 113952129B CN 202110169416 A CN202110169416 A CN 202110169416A CN 113952129 B CN113952129 B CN 113952129B
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- frame
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- cylindrical cam
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/10—Parts, details or accessories
- A61G5/1051—Arrangements for steering
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/10—Parts, details or accessories
- A61G5/12—Rests specially adapted therefor, e.g. for the head or the feet
- A61G5/128—Rests specially adapted therefor, e.g. for the head or the feet for feet
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Rehabilitation Tools (AREA)
Abstract
本发明提供了一种具有可调节脚踏板的轮椅，涉及代步工具技术领域，包括车架、座椅、车轮以及脚踏板结构，所述座椅安装在车架上，所述车轮安装在车架的底部，所述脚踏板结构转动设置在车架的前部，且所述车架上设置有用于驱动脚踏板结构转动的驱动组件；常规状态下，所述脚踏板结构水平悬挂在车架的底部。从而实现将脚踏板的位置在车架底部和车架前部的切换，并使脚踏板可沿水平方向转动开合，有助于解决使用者上下轮椅时脚踏板的阻碍，且有助于减少使用者因弯腰翻动脚踏板造成的不安全性，进而有助于提高使用者调整脚踏板位置的便捷性。
The present invention provides a wheelchair with an adjustable footrest, which relates to the technical field of means of transport, and comprises a frame, a seat, wheels and a footrest structure, wherein the seat is mounted on the frame, the wheels are mounted on the bottom of the frame, the footrest structure is rotatably arranged at the front of the frame, and a driving assembly for driving the footrest structure to rotate is arranged on the frame; under normal conditions, the footrest structure is horizontally suspended at the bottom of the frame. Thus, the position of the footrest can be switched between the bottom of the frame and the front of the frame, and the footrest can be rotated and opened and closed in the horizontal direction, which helps to solve the obstruction of the footrest when the user gets on and off the wheelchair, and helps to reduce the insecurity caused by the user bending over to flip the footrest, thereby helping to improve the convenience of the user in adjusting the position of the footrest.
Description
Technical Field
The utility model relates to the technical field of walking tools, in particular to a wheelchair with an adjustable pedal.
Background
Wheelchairs are chairs provided with wheels to help to replace walking, and are divided into electric and manual folding wheelchairs. The wheelchair is an important moving tool for home rehabilitation, turnover transportation, treatment and outgoing activities of wounded persons, patients and disabled persons, not only meets the requirements of the disabled persons and the mobility impaired persons for riding instead of walk, but also is convenient for the family members to move and care the patients, so that the patients can exercise and participate in social activities by means of the wheelchair.
Currently, foot pedals in wheelchairs are basically stationary, and there are several problems with such foot pedals: 1. for people with different heights, the fixed pedal is uncomfortable to sit; 2. because the fixed pedal extends out of the wheelchair, the space occupied by the wheelchair after being folded is still larger, the wheelchair is inconvenient to store, and the wheelchair is difficult to get on or off due to the obstruction of the pedal.
The present chinese patent with publication number CN210582887U discloses a folding foot pedal mechanism of wheelchair, comprising a wheelchair, the wheelchair has a wheelchair frame and a foot pedal, characterized in that, a foot pedal support cross bar is provided at the front side of the lower part of the wheelchair frame, a pair of foot pedal support vertical bars are slidingly disposed on the foot pedal support cross bar, the front ends of the pair of foot pedal support vertical bars are hinged with the foot pedal, and the foot pedal can turn around the front end hinge point of the foot pedal and the pair of foot pedal support vertical bars. The pedal plate can be adjusted in a front-back telescopic way.
The inventor believes that the pedal in the prior art needs a user to bend down and forward to manually turn over, and most of legs and feet of the wheelchair are inconvenient, and the installation position of the pedal is low, so that the user is difficult to operate, and the problem to be improved exists.
Disclosure of Invention
In view of the shortcomings in the prior art, it is an object of the present utility model to provide a wheelchair with adjustable foot pedals.
The wheelchair with the adjustable pedal comprises a frame, a seat, wheels and a pedal structure, wherein the seat is arranged on the frame, the wheels are arranged at the bottom of the frame, the pedal structure is rotatably arranged at the front part of the frame, and a driving assembly for driving the pedal structure to rotate is arranged on the frame; in a conventional state, the foot pedal structure is horizontally hung at the bottom of the frame.
Preferably, the front end of frame is fixed with the mount pad, one side fixed mounting who keeps away from the frame has the fixing base, foot pedal structure includes running-board and coupling assembling, coupling assembling is including connecting pendulum rod and rotation axis, arbitrary one end and the running-board fixed connection of connecting the pendulum rod, the other end and the rotation axis fixed connection of connecting the pendulum rod, the rotation axis is vertical to be installed between mount pad and fixing base and respectively with the two normal running fit, just the upper end of rotation axis still is connected with drive assembly.
Preferably, the lower side of the mounting seat is provided with a groove, the shape of the groove is semicircular, the rotating shaft is provided with a convex rib, and the convex rib is embedded in the groove and is in sliding fit with the groove.
Preferably, when the foot pedal is positioned in front of the frame, a bending part is arranged on one side of the foot pedal, which is far away from the central axis of the frame.
Preferably, the drive assembly comprises a first transmission shaft rod and a first control handle, the upper end of the first transmission shaft rod is fixedly connected with the first control handle, the first transmission shaft rod is vertically installed between the installation seat and the fixing seat, the first transmission shaft rod is respectively in running fit with the installation seat and the fixing seat, and the lower end of the first transmission shaft rod is coaxially and fixedly connected with the upper end of the rotating shaft.
Preferably, the driving assembly comprises a second transmission shaft rod, a second control handle and a first cylindrical cam, wherein the first cylindrical cam is vertically arranged between the mounting seat and the fixing seat and is respectively in sliding fit with the mounting seat and the fixing seat, the sliding direction of the first cylindrical cam is in the same direction as the axial direction of the first cylindrical cam, a first curve groove which winds around the central axis of the first cylindrical cam is formed in the peripheral side wall of the first cylindrical cam, and the second control handle is fixedly connected to the top of the first cylindrical cam; the second transmission shaft rod is installed between the installation seat and the fixed seat and is respectively in running fit with the installation seat and the fixed seat, the second transmission shaft rod coaxially penetrates into the first cylindrical cam from bottom to top and is in running sliding fit with the first cylindrical cam, a moving roller is arranged on the side wall of the second transmission shaft rod, the moving roller is embedded in the first curved groove and is in rolling fit with the first curved groove, and the lower end of the second transmission shaft rod is fixedly connected with the upper end of the rotating shaft coaxially.
Preferably, the mounting seat is provided with a linear guide groove, the length direction of the linear guide groove is in the same direction as the length direction of the first cylindrical cam, the outer side wall of the first cylindrical cam is fixedly provided with a linear convex rib, the linear convex rib is embedded in the linear guide groove, and the linear convex rib is in sliding fit with the linear guide groove.
Preferably, the driving assembly comprises a gear motor and a third transmission shaft rod, the third transmission shaft rod is vertically arranged between the mounting seat and the fixing seat and is respectively in running fit with the mounting seat and the fixing seat, the gear motor is fixedly arranged on the upper side of the mounting seat, an output shaft of the gear motor is fixedly connected with the top end of the third transmission shaft rod, and the lower end of the third transmission shaft rod is coaxially and fixedly connected with the upper end of the rotating shaft.
Preferably, the driving assembly drives the pedal structure to rotate and simultaneously drives the pedal structure to do lifting motion, the driving assembly comprises a fourth transmission shaft rod, a third control handle and a second cylindrical cam, the second cylindrical cam is vertically and fixedly arranged between the mounting seat and the fixing seat, and a second curve groove which winds the central axis of the second cylindrical cam is formed in the peripheral side wall of the second cylindrical cam; the fourth transmission shaft rod coaxially penetrates through the second cylindrical cam and is in sliding fit with the second cylindrical cam in a rotating way, a matching roller is arranged on the outer side wall of the fourth transmission shaft rod, the matching roller is embedded in the second curved groove and is in rolling fit with the second curved groove, the third control handle is fixedly connected with the top end of the fourth transmission shaft rod, and the lower end of the fourth transmission shaft rod is fixedly connected with the upper end of the rotating shaft in a coaxial way.
Preferably, the driving assembly drives the pedal structure to rotate and simultaneously drives the pedal structure to do lifting motion, the driving assembly comprises a threaded sleeve, a fifth transmission shaft rod and a fourth control handle, the threaded sleeve is vertically and fixedly arranged between the mounting seat and the fixing seat, the fifth transmission shaft rod coaxially penetrates through the threaded sleeve and is in threaded fit with the threaded sleeve, the fourth control handle is fixedly connected with the top end of the fifth transmission shaft rod, and the lower end of the fifth transmission shaft rod is fixedly connected with the rotating shaft.
Compared with the prior art, the utility model has the following beneficial effects:
1. according to the utility model, the pedal plate structure is driven to rotate by the driving assembly, so that the position of the pedal plate is switched between the bottom of the frame and the front part of the frame, and the pedal plate can be rotated to be opened and closed along the horizontal direction, thereby being beneficial to solving the problem of the obstruction of the pedal plate when a user gets on or off a wheelchair, reducing the unsafe performance of the user caused by bending over to turn the pedal plate, and further being beneficial to improving the convenience of the user in adjusting the position of the pedal plate;
2. the utility model can make the foot pedal rotate to open and close along the horizontal direction through the rotating structure. When the foot rest is opened forwards, an interference space formed by the front wheel can be bypassed, so that a foot rest with larger left and right widths can be selected, and the comfort of putting feet of a user can be improved;
3. the utility model can rotate the pedal to open and close along the horizontal direction and move up and down through the rotating structure. When the foot pedal is opened forwards, the foot pedal can bypass the interference space formed by the front wheel and can be placed when the foot pedal is at a low position, and the position of the foot pedal is gradually lifted along with the upward movement of the foot pedal, so that the problem that the foot pedal is too high to place the foot is inconvenient is solved, and convenience in riding of a user is improved.
Drawings
Other features, objects and advantages of the present utility model will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
FIG. 1 is a schematic view of the overall structure of a foot pedal of the present utility model positioned in the front of a vehicle frame;
FIG. 2 is a schematic view of the overall structure of the foot rest of the present utility model at the bottom of the frame;
FIG. 3 is a schematic view of the overall structure of a foot pedal connection assembly embodying the present utility model;
FIG. 4 is a schematic diagram of the overall structure of a drive assembly embodying the present utility model;
FIG. 5 is a schematic view showing the overall structure of the driving assembly according to the modification 1 of the present utility model;
FIG. 6 is an exploded view showing the structure of the connection between the driving assembly and the connecting assembly according to variation 1 of the present utility model;
FIG. 7 is a schematic view showing the overall structure of a driving assembly according to a modification 2 of the present utility model;
FIG. 8 is a schematic view showing the overall structure of a driving assembly according to a modification 3 of the present utility model;
fig. 9 is a schematic view showing the overall structure of the driving assembly in modification 4 of the present utility model.
Reference numerals: 1. a frame; 11. a seat; 12. a wheel; 13. a mounting base; 131. a groove; 132. a straight guide groove; 14. a fixing seat; 15. a pedal structure; 2. a foot pedal; 21. a bending part; 3. a connection assembly; 31. connecting a swinging rod; 32. a rotation shaft; 321. convex ribs; 4. a drive assembly; 41. a first drive shaft; 42. a first steering handle; 43. a first positioning piece; 51. a second drive shaft; 511. a moving roller; 52. a second steering handle; 53. a first cylindrical cam; 531. a first curvilinear channel; 532. linear convex ribs; 54. a second positioning piece; 61. a speed reducing motor; 62. a third drive shaft; 63. a third positioning piece; 71. a fourth drive shaft; 711. a mating roller; 72. a third steering handle; 73. a second cylindrical cam; 731. a second curvilinear channel; 81. a threaded sleeve; 82. a fifth drive shaft; 821. a threaded portion; 83. and a fourth operating handle.
Detailed Description
The present utility model will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present utility model, but are not intended to limit the utility model in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present utility model.
As shown in fig. 1 and 2, the wheelchair with the adjustable foot rest provided by the utility model comprises a frame 1, a seat 11, wheels 12 and a foot rest structure 15, wherein the seat 11 is horizontally and fixedly arranged on the frame 1, the wheels 12 are symmetrically arranged at the front part and the rear part of the bottom of the frame 1 respectively, and the two wheels 12 arranged at the front part of the frame 1 are universal wheels.
The pedal structure 15 is installed in the front of the frame 1, the pedal structure 15 comprises a pedal 2 and a connecting component 3, and a driving component 4 for driving the pedal structure 15 to rotate is further arranged on the frame 1. In a normal state, the foot pedal 2 is horizontally hung at the bottom of the frame 1; when the bicycle frame is used, a worker controls the connecting assembly 3 to drive the pedal plate 2 to rotate through the driving assembly 4 until the pedal plate 2 rotates to a proper position in front of the bicycle frame 1, and the pedal plate 2 is positioned between two universal wheels.
As shown in fig. 3, the foot rest structure 15 is mounted one on each of the left and right sides of the front portion of the frame 1. When in an open state, the two pedals 2 are obliquely upwards arranged from one side of the pedal, which is close to the frame 1, to one side of the pedal, which is far away from the frame 1, and the edge of one side, which is far away from the central axis of the frame 1, of the two pedals 2 is uniformly and integrally formed with the bending part 21, so that the riding comfort and the riding safety of a user are improved.
Since the composition of the two pedal structures 15 and their mounting structure are the same as those of the frame 1, a set of pedal structures 15 will now be described as an example.
As shown in fig. 3, the front end of the frame 1 is vertically welded and fixed with a mounting seat 13, the mounting seat 13 is positioned at the rear of the universal wheel, and one side of the mounting seat 13 away from the frame 1 is fixedly connected with a fixing seat 14 through bolts. The connecting assembly 3 comprises a connecting swing rod 31 and a rotating shaft 32, the rotating shaft 32 is vertically arranged on the lower sides of the mounting seat 13 and the fixed seat 14 and is respectively in running fit with the mounting seat 13 and the fixed seat 14, any one end of the connecting swing rod 31 is fixedly connected with one side of the pedal plate 2, which is close to the frame 1, in a welding manner, and the other end of the connecting swing rod 31 penetrates into one side of the rotating shaft 32 and is fixedly connected with the rotating shaft. The connecting swing rod 31 is curved and has a certain radian. When the foot rest 2 is opened forwards, the problem that the left and right width of the foot rest 2 is too small due to the interference space formed by the universal wheels can be avoided, and the comfort of putting feet of a user is improved.
Further, the bottom wall of the mounting seat 13 is provided with a groove 131, the groove 131 is semicircular, and the central axis of the semicircular groove 131 is collinear with the central axis of the rotating shaft 32. The side wall of the rotating shaft 32 is integrally formed with a convex rib 321, and the convex rib 321 penetrates into the groove 131 from bottom to top and is in sliding fit with the groove 131. The guiding function of the grooves 131 improves the rotation stability of the rotating shaft 32, and limits the rotation range of the rotating shaft 32, so that the movement range of the pedal plate 2 is limited, and the limit condition of the pedal plate 2 and the wheels 12 is reduced.
As shown in fig. 4, the driving assembly 4 includes a first transmission shaft 41 and a first control handle 42, the first transmission shaft 41 is vertically installed between the installation seat 13 and the fixed seat 14 and is respectively in running fit with the installation seat 13 and the fixed seat 14, and the installation of the first transmission shaft 41 on the frame 1 is realized by the installation seat 13 and the fixed seat 14 in a matched manner to clamp the first transmission shaft 41. The first transmission shaft lever 41 is coaxially and integrally provided with a first positioning sheet 43, two first positioning sheets 43 are formed on the first transmission shaft lever 41 at intervals along the length direction of the first transmission shaft lever 41, the two first positioning sheets 43 are embedded in the mounting seat 13 and the fixed seat 14, and any one first positioning sheet 43 is respectively in running fit with the mounting seat 13 and the fixed seat 14.
The first control handle 42 is welded and fixed on the top end of the first transmission shaft 41, and the lower end of the first transmission shaft 41 is coaxially and fixedly connected with the upper end of the rotating shaft 32. The user rotates the rotation shaft 32 by rotating the first manipulation knob 42, thereby rotating the footboard 2, and retracting the footboard 2 to the bottom of the frame 1, or rotating the footboard 2 from the bottom of the frame 1 to a proper position in front of the frame 1.
Variation 1
As shown in fig. 5, the driving assembly 4 includes a second transmission shaft 51, a second control handle 52 and a first cylindrical cam 53, wherein the first cylindrical cam 53 is vertically installed between the mounting seat 13 and the fixing seat 14 and is respectively slidingly matched with the mounting seat and the fixing seat 14, and the sliding direction of the first cylindrical cam 53 is in the same axial direction as that of the first cylindrical cam 53. The side wall of the first cylindrical cam 53 is provided with a first curved groove 531, and the first curved groove 531 surrounds the central axis of the first cylindrical cam 53.
The second transmission shaft rod 51 is rotatably installed between the mounting seat 13 and the fixed seat 14, and the second transmission shaft rod 51 coaxially penetrates into the first cylindrical cam 53 from bottom to top and is in rotary sliding fit with the first cylindrical cam. The outer side wall of the second transmission shaft 51 is embedded with a moving roller 511, and the moving roller 511 is embedded in the first curved groove 531 and is in rolling fit with the first curved groove 531. The second transmission shaft rod 51 is further provided with a second positioning sheet 54 in a coaxial and integrated manner, the second positioning sheet 54 is positioned on the outer side of the lower portion of the first cylindrical cam 53, the second positioning sheet 54 is horizontally embedded between the mounting seat 13 and the fixed seat 14 and is respectively in rotary fit with the mounting seat and the fixed seat 14, the reliability of mounting the second transmission shaft rod 51 on the mounting seat 13 and the fixed seat 14 is improved by means of the second positioning sheet 54, and the rotary stability of the second transmission shaft rod 51 is improved.
The second control handle 52 is welded and fixed on the top end of the first cylindrical cam 53, and the lower end of the second transmission shaft rod 51 is coaxially and fixedly connected with the upper end of the rotating shaft 32, so that a worker lifts or puts down the first cylindrical cam 53 through the second control handle 52, drives the second transmission shaft rod 51 to rotate by means of the cooperation of the moving roller 511 and the first curved groove 531, and drives the rotating shaft 32 to rotate, thereby retracting the pedal plate 2 into the bottom of the frame 1, or rotating the pedal plate 2 from the bottom of the frame 1 to a proper position in front of the frame 1.
As shown in fig. 5 and 6, the mounting seat 13 is provided with a linear guide groove 132, the length direction of the linear guide groove 132 is in the same direction as the axial direction of the first cylindrical cam 53, a linear convex rib 532 is integrally formed on the outer side wall of the first cylindrical cam 53, the linear convex rib 532 is embedded in the linear guide groove 132, and the linear convex rib 532 is in sliding fit with the linear guide groove 132. On the one hand, the rotation of the first cylindrical cam 53 between the mounting base 13 and the fixed base 14 is restricted, and on the other hand, the stability of the lifting movement of the first cylindrical cam 53 between the mounting base 13 and the fixed base 14 is improved.
Variation 2
As shown in fig. 7, the driving assembly 4 includes a gear motor 61 and a third transmission shaft lever 62, the third transmission shaft lever 62 is vertically rotatably mounted between the mounting seat 13 and the fixing seat 14, a third positioning piece 63 is coaxially and integrally formed on the third transmission shaft lever 62, two third positioning pieces 63 are formed on the third transmission shaft lever 62 along the axial direction of the third transmission shaft lever 62 at intervals, the two third positioning pieces 63 are embedded between the mounting seat 13 and the fixing seat 14, and the two third positioning pieces 63 are in rotary fit with the mounting seat 13 and the fixing seat 14.
The gear motor 61 is fixedly installed on the upper sides of the installation seat 13 and the fixed seat 14, the machine body of the gear motor 61 is clamped and fixed by the installation seat 13 and the fixed seat 14 in a matched mode, an output shaft of the gear motor 61 is fixedly and coaxially fixedly connected with the top end of the third transmission shaft rod 62 through a coupler, and the lower end of the third transmission shaft rod 62 is fixedly and coaxially welded with the upper end of the rotating shaft 32.
The gear motor 61 is started to drive the third transmission shaft lever 62 to stably rotate and drive the rotation shaft 32 to rotate, so that the foot rest 2 is retracted into the bottom of the frame 1 or the foot rest 2 is rotated from the bottom of the frame 1 to a proper position in front of the frame 1.
Variation 3
As shown in fig. 8, the driving assembly 4 drives the pedal structure 15 to move up and down while driving the pedal structure 15 to horizontally rotate. The drive assembly 4 comprises a fourth transmission shaft 71, a third steering handle 72 and a second cylindrical cam 73. The second cylindrical cam 73 is vertically and fixedly arranged between the mounting seat 13 and the fixed seat 14, and the mounting seat 13 and the fixed seat 14 are matched to stably clamp the second cylindrical cam 73. The fourth transmission shaft 71 is coaxially inserted through the second cylindrical cam 73 and is in sliding engagement with the second cylindrical cam.
A second curved groove 731 is formed in the peripheral side wall of the second cylindrical cam 73, and the locus of the second curved groove 731 is wound around the central axis of the second cylindrical cam 73. On the outer side wall of the fourth transmission shaft 71, a fitting roller 711 is mounted, the fitting roller 711 is embedded in the second curved groove 731, and the fitting roller 711 is in rolling fit with the second curved groove 731. The third control handle 72 is fixedly mounted on the fourth transmission shaft 71 by welding, and the bottom of the fourth transmission shaft 71 is fixedly connected with the top of the rotating shaft 32 by coaxial welding.
The worker rotates the fourth transmission shaft lever 71 through the third manipulation knob 72 and makes the fourth transmission shaft lever 71 perform lifting movement along the axial direction of the second cylindrical cam 73 while rotating by the cooperation of the second curved groove 731 and the cooperation roller 711, thereby realizing the rotation and swing of the foot board 2 between the bottom of the frame 1 and the front of the frame 1 along the horizontal direction and the lifting movement up and down. The user can put the foot when running-board 2 low, along with running-board 2 upwards moves, and the position of foot progressively promotes, has solved running-board 2 too high inconvenient problem of putting the foot, has improved the convenience that the user took.
Variation 4
As shown in fig. 9, the driving assembly 4 drives the pedal structure 15 to move up and down while driving the pedal structure 15 to horizontally rotate. The driving assembly 4 comprises a threaded sleeve 81, a fifth transmission shaft rod 82 and a fourth control handle 83, wherein the threaded sleeve 81 is vertically arranged between the mounting seat 13 and the fixed seat 14, and the threaded sleeve 81 is clamped and fixed by the mounting seat 13 and the fixed seat 14 in a matching manner.
The fifth transmission shaft 82 coaxially penetrates through the threaded sleeve 81, a threaded portion 821 is integrally formed on the fifth transmission shaft 82, and the threaded portion 821 is in threaded fit with the threaded sleeve 81. The fourth control handle 83 is welded and fixed on the top of the fifth transmission shaft 82, and the bottom of the fifth transmission shaft 82 is welded and fixed coaxially with the rotating shaft 32.
The staff drives the fifth transmission shaft rod 82 to rotate by rotating the fourth control handle 83, and the external threads of the threaded part 821 are meshed with the internal threads of the threaded sleeve 81 to be matched and rotated, so that the fifth transmission shaft rod 82 can perform up-and-down lifting movement while rotating, and further the foot pedal 2 can rotate and swing along the horizontal direction between the bottom of the frame 1 and the front part of the frame 1 and perform up-and-down lifting movement. The user can put the foot when running-board 2 low, along with running-board 2 upwards moves, and the position of foot progressively promotes, has solved running-board 2 too high inconvenient problem of putting the foot, has improved the convenience that the user took.
Principle of operation
In operation, the driving component 4 drives the transmission shaft rod, and drives the pedal plate 2 to rotate and swing between the bottom of the frame 1 and the front part of the frame 1 through the rotating shaft 32 and the connecting swing rod 31, so that when the pedal plate 2 is opened forwards, an interference space formed by universal wheels can be bypassed, and the pedal plate 2 with larger left and right widths can be designed, so that a user can put feet more comfortably; and the foot pedal 2 is folded backwards to the bottom of the frame 1, so that the problem of difficulty in riding caused by the obstruction of the foot pedal 2 when a user gets on or off the wheelchair is solved, and the convenience of riding the wheelchair by the user is improved.
In the description of the present application, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a specific orientation, be configured and operated in a specific orientation, and are not to be construed as limiting the present application.
The foregoing describes specific embodiments of the present utility model. It is to be understood that the utility model is not limited to the particular embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without affecting the spirit of the utility model. The embodiments of the present application and features in the embodiments may be combined with each other arbitrarily without conflict.
Claims (3)
1. The wheelchair with the adjustable pedal is characterized by comprising a frame (1), a seat (11), wheels (12) and a pedal structure (15), wherein the seat (11) is installed on the frame (1), the wheels (12) are installed at the bottom of the frame (1), the pedal structure (15) is rotatably arranged at the front part of the frame (1), and a driving assembly (4) for driving the pedal structure (15) to rotate is arranged on the frame (1);
in a normal state, the foot pedal structure (15) is horizontally hung at the bottom of the frame (1);
the front end of the frame (1) is fixedly provided with a mounting seat (13), one side, far away from the frame (1), of the mounting seat (13) is fixedly provided with a fixing seat (14), the foot pedal structure (15) comprises a foot pedal (2) and a connecting component (3), the connecting component (3) comprises a connecting swing rod (31) and a rotating shaft (32), any one end of the connecting swing rod (31) is fixedly connected with the foot pedal (2), the other end of the connecting swing rod (31) is fixedly connected with the rotating shaft (32), the rotating shaft (32) is vertically arranged between the mounting seat (13) and the fixing seat (14) and is respectively in running fit with the mounting seat and the fixing seat, and the upper end of the rotating shaft (32) is also connected with a driving component (4);
the driving assembly (4) drives the pedal structure (15) to rotate and simultaneously drives the pedal structure (15) to do lifting motion, the driving assembly (4) comprises a fourth transmission shaft rod (71), a third control handle (72) and a second cylindrical cam (73), the second cylindrical cam (73) is vertically and fixedly arranged between the mounting seat (13) and the fixing seat (14), and a second curved groove (731) which winds around the central axis of the second cylindrical cam (73) is formed in the peripheral side wall of the second cylindrical cam (73);
the fourth transmission shaft lever (71) is coaxially penetrated in the second cylindrical cam (73) and is matched with the second cylindrical cam in a rotating sliding way, a matching roller (711) is arranged on the outer side wall of the fourth transmission shaft lever (71), the matching roller (711) is embedded in the second curved groove (731) and is matched with the second curved groove in a rolling way, the third control handle (72) is fixedly connected with the top end of the fourth transmission shaft lever (71), and the lower end of the fourth transmission shaft lever (71) is coaxially and fixedly connected with the upper end of the rotating shaft (32).
2. The wheelchair with the adjustable pedal according to claim 1, characterized in that a groove (131) is formed in the lower side of the mounting seat (13), the groove (131) is semicircular in shape, a protruding rib (321) is arranged on the rotating shaft (32), and the protruding rib (321) is embedded in the groove (131) and is in sliding fit with the groove.
3. A wheelchair with an adjustable foot pedal according to claim 1, characterized in that the foot pedal (2) is provided with a bending part (21) at the side of the foot pedal (2) remote from the centre axis of the frame (1) when the foot pedal (2) is located in front of the frame (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110169416.6A CN113952129B (en) | 2021-02-07 | 2021-02-07 | Wheelchair with adjustable footrest |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN113952129B true CN113952129B (en) | 2024-04-09 |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN113952129A (en) | 2022-01-21 |
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