Wheelchair movable pedal assembly

Abstract

The utility model relates to the technical field of wheelchair pedals, in particular to a wheelchair movable pedal assembly which comprises an inserting pipe, a leg detaching pipe which telescopically moves in the axis direction of the inserting pipe is sleeved outside the upper end of the inserting pipe, a front pipe is connected to the lower end of the inserting pipe, a pedal is rotatably connected to the front pipe, and a sleeve frame is sleeved outside the leg detaching pipe. A rotating groove located on one side of the leg detaching pipe is formed in the sleeve frame, a rotating shaft is rotationally connected into the rotating groove and is perpendicular to the inserting pipe, the lower end of the rotating shaft is fixedly connected with a shifting handle extending out of the rotating groove, and an extending opening communicated with the rotating groove is formed in the side, opposite to the rotating groove, of the inserting pipe. The side wall of the rotating shaft is provided with an abutting protrusion extending into the extending opening, the shifting handle is shifted, the rotating shaft rotates anticlockwise, and the abutting state of the abutting protrusion and the outer side wall of the cannula is changed into the non-contact state of the abutting protrusion and the outer side wall of the cannula. According to the utility model, the fixity between the leg dismounting pipe and the insertion pipe is enhanced, and the stability of the pedal is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wheelchair pedals, in particular to a movable pedal assembly for a wheelchair. Background Art

[0002] The front end of the wheelchair is usually provided with a pedal for the patient to step on, which makes it convenient for family members to support the patient or for the patient to get on and off the wheelchair by themselves.

[0003] For example, on November 20, 2020, a patent with publication number CN211962403U, entitled "A wheelchair pedal lifting mechanism", was disclosed, including a pedal and a lifting mechanism. The lifting mechanism includes a pivot part, a connecting rod, a ball joint, a threaded rod, and a threaded sleeve threadedly connected to the outside of the threaded rod. The patent uses the cooperation of the threaded rod and the threaded sleeve to adjust the rise and fall of the wheelchair pedal, and the user can adjust the pedal to a suitable height according to his or her own situation; however, the applicant found that although the pedal height can be adjusted, after the pedal has been adjusted for a period of time, the user will often touch the threaded rod and the threaded sleeve, which can easily cause the threaded rod and the threaded sleeve to rotate relative to each other, and the height stability of the pedal adjustment is poor, thereby affecting the use effect of the pedal. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide a movable pedal assembly for a wheelchair to solve the problem of poor pedal stability.

[0005] Based on the above purpose, the utility model provides a wheelchair movable pedal assembly, including an intubation tube, the upper end of the intubation tube is covered with a leg-detaching tube that can be telescopically moved along the axial direction of the intubation tube, the lower end of the intubation tube is connected to a front tube, and a foot pedal is rotatably connected to the front tube, and at least one group of relatively arranged assembly holes is opened on the intubation tube, and copper beads are arranged in the assembly holes, and two of the copper beads are connected by a spring sheet, and the spring sheet is arranged in the intubation tube, and the leg-detaching tube is provided with a plurality of adjustment holes arranged in a row and inserted in cooperation with the copper beads. A hole is provided on the outer sleeve of the leg-detaching tube, and a sleeve frame is provided in the sleeve frame, and a rotating groove located on one side of the leg-detaching tube is provided in the sleeve frame, and a rotating shaft is rotatably connected in the rotating groove, and a toggle handle extending out of the rotating groove is fixedly connected to the lower end of the rotating shaft, and an insertion opening connected to the rotating groove is provided on the side of the insertion tube that is arranged opposite to the rotating groove, and a convexity extending into the insertion opening is provided on the side wall of the rotating shaft, and the toggle handle is toggled and the rotating shaft rotates counterclockwise, so that the state in which the convexity abuts against the outer wall of the insertion tube is changed to a state in which the convexity does not contact the outer wall of the insertion tube.

[0006] Optionally, a side of the insertion tube opposite to the rotation axis is provided with a plurality of protrusions that cooperate with the abutting protrusion.

[0007] Optionally, a torsion spring is disposed on the outer sleeve of the rotating shaft, and two ends of the torsion spring are respectively connected to the rotating shaft and the inner side wall of the rotating groove.

[0008] Optionally, a rubber pad is provided on the outer side of the abutment.

[0009] Optionally, a bayonet is provided on the leg-detachable tube, and a latch protrusion cooperating with the bayonet is provided on the inner side wall of the sleeve.

[0010] The beneficial effects of the utility model: the utility model provides a wheelchair movable pedal assembly. When the height of the foot pedal needs to be adjusted, the copper bead extending out of the adjustment hole is pressed to make the leg-detachable tube and the insertion tube move toward each other, so that the foot pedal can be adjusted to rise and fall. The user can adjust the foot pedal to a suitable height according to his or her own situation, thereby improving the user's comfort. In addition, by turning the toggle handle and rotating the shaft clockwise, the non-abutment state of the abutment protrusion and the outer wall of the insertion tube is changed to the abutment state of the abutment protrusion and the outer wall of the insertion tube, thereby strengthening the fixation between the leg-detachable tube and the insertion tube, thereby improving the stability of the foot pedal. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 It is a schematic diagram of the explosion structure of the utility model;

[0014] Figure 3 for Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0015] Figure 4 This is a schematic diagram of the internal structure of the sleeve of the utility model;

[0016] In the figure: 1. Remove the leg tube; 2. Insert the tube; 3. Foot pedal; 4. Front tube; 5. Shrapnel; 6. Copper bead; 7. Assembly hole; 8. Adjustment hole; 9. Sleeve; 10. Rotating shaft; 11. Toggle handle; 12. Abutment bulge; 13. Clamping bulge; 14. Bayonet. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0018] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0019] like Figures 1 to 4 As shown, a movable pedal assembly of a wheelchair comprises an insert tube 2, the upper end of the insert tube 2 is covered with a leg-detaching tube 1 which can be telescopically moved along the axial direction of the insert tube 2, the lower end of the insert tube 2 is connected to a front tube 4, a foot pedal 3 is rotatably connected to the front tube 4, at least one group of relatively arranged assembly holes 7 is opened on the insert tube 2, copper beads 6 are arranged in the assembly holes 7, two of the copper beads 6 are connected by a spring piece 5, the spring piece 5 is arranged in the insert tube 2, a plurality of adjustment holes 8 arranged in a row which are inserted and arranged in cooperation with the copper beads 6 are arranged on the leg-detaching tube 1, and the lifting and lowering of the foot pedal 3 can be controlled by pressing the copper beads 6 extending out of the adjustment holes 8 and then making the insert tube 2 and the leg-detaching tube 1 move relatively. The structure is simple and easy to use. A sleeve frame 9 is provided on the outer surface of the leg-detaching tube 1. A rotating groove located on one side of the leg-detaching tube 1 is provided in the sleeve frame 9. A rotating shaft 10 is rotatably connected in the rotating groove. The rotating shaft 10 is vertically arranged with the insert tube 2. A toggle handle 11 extending out of the rotating groove is fixedly connected to the lower end of the rotating shaft 10. An insertion port connected to the rotating groove is provided on the side of the insert tube 2 facing the rotating groove. A protrusion 12 extending into the insertion port is provided on the side wall of the rotating shaft 10. The toggle handle 11 is toggled and the rotating shaft 10 rotates counterclockwise, so that the state in which the protrusion 12 abuts against the outer wall of the insert tube 2 is changed to a state in which the protrusion 12 does not contact the outer wall of the insert tube 2.

[0020] When it is necessary to adjust the height of the foot pedal 3, press the copper bead 6 extending out of the adjustment hole 8 to move the leg-detaching tube 1 and the insertion tube 2 toward each other, so that the foot pedal 3 can be adjusted to rise and fall. The user can adjust the foot pedal 3 to a suitable height according to his own situation to improve the user's comfort. At this time, there is still a little looseness between the leg-detaching tube 1 and the insertion tube 2, and the stability of the foot pedal 3 is not high. By turning the toggle handle 11, the rotating shaft 10 rotates clockwise, so that the state in which the convex 12 and the outer wall of the insertion tube 2 are not in contact is changed to the state in which the convex 12 and the outer wall of the insertion tube 2 are in contact, thereby strengthening the fixity between the leg-detaching tube 1 and the insertion tube 2, thereby improving the stability of the foot pedal 3.

[0021] A plurality of protrusions cooperating with the abutting protrusion 12 are arranged on one side of the inserting tube 2 opposite to the rotating shaft 10. When the abutting protrusion 12 abuts against the inserting tube 2, the abutting protrusion 12 is located between two adjacent protrusions, thereby improving the stability between the leg removing tube 1 and the inserting tube 2.

[0022] The rotating shaft 10 is provided with a torsion spring on its outer sleeve, and the two ends of the torsion spring are respectively abutted, fixedly connected or detachably connected to the rotating shaft 10 and the inner wall of the rotating groove. The setting of the torsion spring facilitates the rapid resetting of the toggle handle 11, so that the abutting protrusion 12 and the cannula 2 remain in an abutting state, thereby improving the stability between the leg removal tube 1 and the cannula 2.

[0023] The lower end of the toggle handle 11 is rotatably connected to a limiting plate via a rotating shaft, and the rotating shaft is arranged parallel to the rotating shaft 10. When it is necessary to keep the abutting protrusion 12 and the cannula 2 in a non-contact state for a long time, the rotating shaft and the limiting plate are rotated counterclockwise so that the lower end of the limiting plate abuts against the sleeve frame 9. At this time, the angle between the limiting plate and the toggle handle 11 changes from about one hundred and eighty degrees to about ninety degrees, thereby achieving the non-contact state between the abutting protrusion 12 and the cannula 2 for a longer time. In addition, a card groove is provided on the outer wall of the sleeve frame 9 to cooperate with the lower end of the limiting plate.

[0024] A rubber pad is arranged on the outer side of the abutting protrusion 12 , and the arrangement of the rubber pad is convenient for increasing the friction between the abutting protrusion 12 and the inserting tube 2 , thereby reducing the possibility of relative sliding between the leg removal tube 1 and the inserting tube 2 .

[0025] The leg-detaching tube 1 is provided with a bayonet 14 , and the inner side wall of the sleeve frame 9 is provided with a clamping protrusion 13 that cooperates with the bayonet 14 , so as to facilitate fixing the sleeve frame 9 on the leg-detaching tube 1 .

[0026] A person skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0027] The embodiments of the present invention are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A wheelchair movable pedal assembly, comprising an insert tube (2), the upper end of the insert tube (2) is covered with a leg-detaching tube (1) that can be telescopically moved along the axial direction of the insert tube (2), the lower end of the insert tube (2) is connected to a front tube (4), and a foot pedal (3) is rotatably connected to the front tube (4), characterized in that: The insert tube (2) is provided with at least one group of assembly holes (7) arranged opposite to each other, a copper bead (6) is arranged in the assembly hole (7), two copper beads (6) are connected by a spring sheet (5), the spring sheet (5) is arranged in the insert tube (2), a plurality of adjustment holes (8) arranged in a row and arranged to cooperate with the copper beads (6) for insertion are arranged on the leg removal tube (1), a sleeve frame (9) is arranged on the outer surface of the leg removal tube (1), a rotation groove is arranged in the sleeve frame (9) and is located on one side of the leg removal tube (1), and the rotation groove is arranged to rotate. The rotating shaft (10) is movably connected to the rotating shaft (10), and a toggle handle (11) extending out of the rotating groove is fixedly connected to the lower end of the rotating shaft (10). An insertion opening connected to the rotating groove is provided on the side of the inserting tube (2) facing the rotating groove, and a protrusion (12) extending into the insertion opening is provided on the side wall of the rotating shaft (10). When the toggle handle (11) is toggled, the rotating shaft (10) rotates counterclockwise, so that the state in which the protrusion (12) abuts against the outer wall of the inserting tube (2) changes to a state in which the protrusion (12) and the outer wall of the inserting tube (2) do not contact each other.

2. A wheelchair movable pedal assembly according to claim 1, characterized in that: A plurality of protrusions cooperating with the abutting protrusion (12) are arranged on one side of the insertion tube (2) opposite to the rotating shaft (10).

3. The wheelchair movable pedal assembly according to claim 1, characterized in that: The rotating shaft (10) is provided with a torsion spring on its outer sleeve, and the two ends of the torsion spring are respectively connected to the rotating shaft (10) and the inner side wall of the rotating groove.

4. The wheelchair movable pedal assembly according to claim 1, characterized in that: A rubber pad is arranged on the outer side of the abutting protrusion (12).

5. The wheelchair movable pedal assembly according to claim 1, characterized in that: The leg-detaching tube (1) is provided with a bayonet (14), and the inner side wall of the sleeve frame (9) is provided with a bayonet protrusion (13) that cooperates with the bayonet (14).

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