Locking device and wheelchair thereof

Abstract

The utility model provides a locking device and a wheelchair, relates to wheelchair equipment technical field, including fixing rod and locking frame, said fixing rod is provided with fixing component, locking frame is provided with locking component, fixing component is provided with fixing column, locking component is rotatingly connected with locking piece, locking piece is provided with clamping position, and the locking piece is provided with clamping position. When the locking piece rotates upwards, the clamping position is clamped to the fixing column, and rotation of the locking frame relative to the fixing rod is limited. The locking assembly comprises a first mounting base, and a locking piece is rotationally connected with a mounting column. The folding wheelchair has the advantages that the locking assembly and the fixing assembly are matched with each other, the wheelchair in the unfolded state can be locked, the phenomenon that the stability is poor when a user sits on the wheelchair is effectively prevented, when the wheelchair is not used, the locking assembly and the fixing assembly are unlocked, and therefore the wheelchair is folded, and the wheelchair is convenient to use. The locking mode is suitable for a wheelchair adopting an up-down folding mode, the structure is simple, locking is fast and convenient, and the wheelchair folding efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wheelchair equipment, in particular to a locking device and a wheelchair thereof. Background Art

[0002] Folding wheelchairs are a means of transportation for special groups of people, such as the disabled, the elderly and the weak, as well as patients undergoing medical clinical rehabilitation. They are widely used because they can be folded, are easy to carry and take up little space.

[0003] In the prior art, the technical solution of the Chinese patent document (Announcement No.: CN216091113U, Patent Name: Folding Wheelchair) discloses "a wheelchair frame; a rear wheel assembly, wherein the rear wheel assembly is coupled to the rear end of the wheelchair frame; and a front wheel assembly, wherein the front wheel assembly includes two front wheels, the front wheels are detachably arranged at the front end of the wheelchair frame, the front wheels include a front wheel unit and a front wheel support shaft, the front wheel unit is coupled to the front wheel support shaft, and the front wheel support shaft is detachably arranged at the lower end of the wheelchair frame."

[0004] Combined with the description and drawings of the patent document, the wheelchair adopts a left-right folding method, and locking devices are provided at both ends of the folding mechanism. The folding mechanism and the frame bracket are connected by the locking device, so that the folding wheelchair can remain in the unfolded state. However, the left-right locking method is not quick and convenient enough, which results in the wheelchair not being folded quickly enough. Utility Model Content

[0005] The utility model overcomes the shortcomings of the prior art and provides a locking device and a wheelchair thereof, wherein the unfolded wheelchair is locked by the cooperation of a fixing component and a locking component, thereby improving the folding efficiency of the wheelchair.

[0006] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0007] A locking device comprises a fixed rod and a locking frame, wherein the fixed rod is provided with a fixed component, the locking frame is provided with a locking component, the fixed component is provided with a fixed column, the locking component is rotatably connected with a locking piece, the locking piece is provided with a snap-in position, when the locking piece is rotated upward, the snap-in position is snapped on the fixed column, limiting the rotation of the locking frame relative to the fixed rod.

[0008] Furthermore, the locking assembly includes a first mounting seat, the locking piece is rotatably connected to a mounting column, the mounting column is arranged on the first mounting seat, and the first mounting seat is arranged on the locking frame.

[0009] Furthermore, the fixing assembly includes a second mounting seat, the fixing column is arranged on the second mounting seat, and the second mounting seat is arranged in the middle of the fixing rod.

[0010] Furthermore, the upper end of the clamping position extends outward to form a footrest position, and the lower end of the clamping position is provided with a connecting hole, and the mounting column is plugged into the connecting hole.

[0011] Furthermore, a plurality of reinforcing ribs are arranged at the junction of the footrest and the clamping position, and a plurality of dark patterns are arranged on the surface of the footrest.

[0012] Furthermore, connecting plug-ins are arranged on both sides of the first mounting seat, the middle part of the connecting plug-in surrounds a concave position, and the shape of the fixing rod matches the shape of the concave position.

[0013] Furthermore, the mounting column is sleeved with a torsion spring, one end of the torsion spring is arranged on the locking plate, and the other end of the torsion spring is against the first mounting seat.

[0014] A wheelchair comprises a locking device as described in any one of the above; the fixing rod is arranged on the backrest frame of the wheelchair.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The locking component and the fixing component cooperate with each other to lock the wheelchair in the unfolded state, effectively preventing the user from having poor stability when riding. When the wheelchair is not in use, the locking component and the fixing component are unlocked to allow the wheelchair to be folded. This locking method is suitable for wheelchairs that adopt the up and down folding method. It has a simple structure, is quick and convenient to lock, and improves the folding efficiency of the wheelchair. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 It is a schematic diagram of a locking device according to an embodiment of the utility model;

[0019] Figure 2 It is a schematic diagram of a locking frame and a locking assembly of an embodiment of the utility model;

[0020] Figure 3 It is a partial schematic diagram of the locking assembly of an embodiment of the utility model;

[0021] Figure 4 It is a schematic diagram of a locking piece in an embodiment of the utility model;

[0022] Figure 5 This is a schematic diagram of a wheelchair in an embodiment of the utility model;

[0023] Figure 6 It is a schematic diagram of folding a wheelchair according to an embodiment of the utility model.

[0024] In the figure: 1-fixing rod, 2-locking frame, 3-fixing assembly, 301-fixing column, 302-second mounting seat, 4-locking assembly, 401-first mounting seat, 402-locking plate, 4021-clamping position, 4022-foot position, 4023-reinforcement rib, 4024-dark pattern, 4025-connecting hole, 403-connecting plug-in, 4031-recessed position, 404-mounting column, 405-torsion spring, 5-backrest frame. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0026] like Figures 1 to 6 As shown, a locking device includes a fixing rod 1 and a locking frame 2, the fixing rod 1 is provided with a fixing component 3, the locking frame 2 is provided with a locking component 4, the fixing component 3 is provided with a fixing column 301, the locking component 4 is rotatably connected to be provided with a locking piece 402, the locking piece 402 is provided with a clamping position 4021, when the locking piece 402 rotates upward, the clamping position 4021 is clamped on the fixing column 301, restricting the rotation of the locking frame 2 relative to the fixing rod 1, thereby locking the wheelchair in the unfolded state, effectively preventing the user from having poor stability when riding, and the locking method is suitable for wheelchairs that adopt an up and down folding method, with a simple structure, quick and convenient locking, and improved wheelchair folding efficiency.

[0027] The locking assembly 4 includes a first mounting seat 401, a locking piece 402 is rotatably connected to a mounting column 404, the mounting column 404 is arranged on the first mounting seat 401, the first mounting seat 401 is arranged on the locking frame 2, the fixing assembly 3 includes a second mounting seat 302, the fixing column 301 is arranged on the second mounting seat 302, the second mounting seat 302 is arranged in the middle of the fixing rod 1, the upper end of the clamping position 4021 extends outward to form a footrest position 4022, the lower end of the clamping position 4021 is provided with a connecting hole 4024, and the mounting column 404 is inserted into the connecting hole 4025.

[0028] Connecting plug-ins 403 are provided on both sides of the first mounting seat 401, and the middle part of the connecting plug-in 403 is surrounded to form a recessed position 4031. The shape of the fixing rod 1 matches the shape of the recessed position 4031. A plurality of reinforcing ribs 4023 are provided at the junction of the footrest position 4022 and the clamping position 4021. The reinforcing ribs 4023 effectively enhance the strength of the locking piece 402 and extend the service life of the locking piece 402. A plurality of dark patterns 4024 are provided on the surface of the footrest position 4022. The dark patterns 4024 increase the friction force. The locking piece 402 can be rotated by stepping on the footrest position 4022, and it is not easy to slip.

[0029] The mounting post 404 is sleeved with a torsion spring 405, one end of which is arranged on the locking piece 402, and the other end of the torsion spring 405 is against the first mounting seat 401. The torsion spring 405 makes the locking piece 402 elastic, and in the absence of external force, the engaging position 4021 and the fixing post 301 remain in an engaged state. When the locking piece 402 is rotated downward to disengage the engaging position 4021 from the fixing post 301, when the applied force disappears, the torsion spring 405 drives the locking piece 402 to return to its original position, thereby not affecting the folding of the wheelchair.

[0030] A wheelchair, wherein a fixing rod 1 is arranged on a backrest frame 5 of the wheelchair, Figure 5 The wheelchair is in the unfolded state. When the wheelchair is in the unfolded state, the engaging position 4021 is engaged with the fixing column 301, and the concave position 4031 is wrapped and connected with the fixing rod 1. This double fixing method makes the wheelchair structure more solid.

[0031] Figure 6 When the wheelchair is in the folded state, the footrest 4022 is pressed to rotate the locking piece 402 downward, and the engaging position 4021 is disengaged from the fixing column 301, so that the locking frame 2 is rotated relative to the backrest frame 5, thereby realizing the folding of the wheelchair, facilitating storage, and achieving the effect of saving space.

[0032] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. However, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A locking device, characterized in that: The invention comprises a fixing rod (1) and a locking frame (2), wherein the fixing rod (1) is provided with a fixing assembly (3), the locking frame (2) is provided with a locking assembly (4), the fixing assembly (3) is provided with a fixing column (301), the locking assembly (4) is rotatably connected with a locking piece (402), the locking piece (402) is provided with a locking position (4021), and when the locking piece (402) is rotated upward, the locking position (4021) is engaged with the fixing column (301), thereby limiting the rotation of the locking frame (2) relative to the fixing rod (1).

2. A locking device according to claim 1, characterized in that: The locking assembly (4) comprises a first mounting seat (401), a locking piece (402) rotatably connected to a mounting post (404), the mounting post (404) being arranged on the first mounting seat (401), and the first mounting seat (401) being arranged on the locking frame (2).

3. A locking device according to claim 2, characterized in that: The fixing assembly (3) comprises a second mounting seat (302), the fixing column (301) is arranged on the second mounting seat (302), and the second mounting seat (302) is arranged in the middle of the fixing rod (1).

4. A locking device according to claim 3, characterized in that: The upper end of the clamping position (4021) extends outward to form a pedal position (4022), and the lower end of the clamping position (4021) is provided with a connecting hole (4025), and the mounting column (404) is plugged into the connecting hole (4025).

5. A locking device according to claim 4, characterized in that: A plurality of reinforcing ribs (4023) are provided at the junction of the footrest position (4022) and the clamping position (4021), and a plurality of dark patterns (4024) are provided on the surface of the footrest position (4022).

6. A locking device according to claim 2, characterized in that: Connecting plug-ins (403) are arranged on both sides of the first mounting seat (401), the middle part of the connecting plug-in (403) surrounds a concave position (4031), and the shape of the fixing rod (1) matches the shape of the concave position (4031).

7. A locking device according to claim 2, characterized in that: The mounting column (404) is sleeved with a torsion spring (405), one end of the torsion spring (405) is arranged on the locking plate (402), and the other end of the torsion spring (405) is against the first mounting seat (401).

8. A wheelchair, characterized in that: A locking device comprising any one of claims 1 to 7; the fixing rod (1) is arranged on a backrest frame (5) of a wheelchair.

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