Folding structure of wheelchair

Abstract

The utility model relates to the technical field of wheelchairs, in particular to a wheelchair folding structure which comprises two wheelchair frames arranged at intervals. The folding module comprises a first folding mechanism and a second folding mechanism, and the first folding mechanism and the second folding mechanism are both arranged between the two wheelchair frames; the connecting rod module is arranged between the first folding mechanism and the second folding mechanism and enables the first folding mechanism and the second folding mechanism to be unfolded or folded synchronously. The locking module is slidably arranged outside the connecting rod module, and a supporting mechanism is hinged between the locking module and the first folding mechanism; the unlocking module is slidably arranged in the connecting rod module. The two wheelchair frames can get close to each other and be compressed to reduce the overall size of the wheelchair, and therefore overall packaging, transportation and daily carrying of the wheelchair are facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wheelchairs, in particular to a folding structure of a wheelchair. BACKGROUND

[0002] A wheelchair is a chair with wheels that can help replace walking. According to the walking mode of the wheelchair, it can be divided into a manual wheelchair and an electric wheelchair. The wheelchair is mainly used to meet the needs of the disabled and the disabled for walking, and to facilitate the movement and care of family members.

[0003] The existing wheelchair usually includes a frame module, a seat module arranged on the top of the frame module and used for the user to sit, a wheel module arranged at the bottom of the frame module and used to drive the frame module to move, and a foot pedal module arranged on the front side of the frame module and used for the user to step on. The frame module is usually arranged as a foldable scissor structure, so that the frame module can be folded and reduced in size, thereby facilitating the packaging, transportation and daily carrying of the wheelchair.

[0004] The present application provides another frame module and wheelchair capable of being folded and reduced in size, so as to facilitate the packaging, transportation and daily carrying of the wheelchair. CONTENT OF THE UTILITY MODEL

[0005] In order to facilitate the packaging, transportation and daily carrying of the wheelchair as a whole, the present application provides a folding structure of a wheelchair.

[0006] The above-mentioned purpose of the present application is realized by the following technical scheme:

[0007] A folding structure of a wheelchair includes a wheelchair frame, the wheelchair frame is configured with two groups, and the two groups of wheelchair frames are arranged at intervals; a folding module, the folding module includes a first folding mechanism and a second folding mechanism, the first folding mechanism and the second folding mechanism are arranged between the two groups of wheelchair frames; a connecting rod module, the connecting rod module is arranged between the first folding mechanism and the second folding mechanism, and the first folding mechanism and the second folding mechanism are synchronously unfolded or contracted; a locking module, the locking module is slidingly arranged outside the connecting rod module, a supporting mechanism is hingedly arranged between the locking module and the first folding mechanism, and when the locking module slides to a predetermined position of the connecting rod module, the locking module and the connecting rod module are mutually clamped and locked, so that the locking module pushes the first folding mechanism to keep the unfolded state through the supporting mechanism; an unlocking module, the unlocking module is slidingly arranged inside the connecting rod module and is used to release the clamping and locking relationship between the locking module and the connecting rod module.

[0008] Optionally, the first folding mechanism and the second folding mechanism each comprise two groups of folding plates and a connecting plate, the two groups of folding plates are respectively hingedly arranged on two groups of wheelchair frames at sides away from each other, the connecting plate is respectively hingedly arranged on the two groups of folding plates at sides close to each other, and the connecting rod module is respectively fixedly arranged at two ends of the connecting plate of the first folding mechanism and the connecting plate of the second folding mechanism.

[0009] Optionally, the locking module comprises a sliding seat, a movable bolt and an elastic member, the sliding seat is slidingly arranged outside the connecting rod module, the movable bolt is slidingly arranged inside the sliding seat, the elastic member is arranged between the sliding seat and the movable bolt and is used to push the movable bolt to slidingly abut against the outside of the connecting rod module, the connecting rod module is provided with a locking hole matched with the movable bolt, and when the sliding seat slides to a predetermined position of the connecting rod module, the movable bolt is inserted into the locking hole.

[0010] Optionally, the unlocking module comprises an unlocking push rod, an unlocking head and an unlocking handle, the unlocking push rod is slidingly arranged inside the connecting rod module, the unlocking head is fixedly arranged at one end of the unlocking push rod and is provided with a wedge surface, and the unlocking handle is fixedly arranged at the other end of the unlocking push rod and is used to push the unlocking push rod to slide so that the wedge surface pushes the movable bolt out of the locking hole.

[0011] Optionally, the unlocking handle is threadedly connected to the other end of the unlocking push rod away from the unlocking head.

[0012] Optionally, the connecting plate of the second folding mechanism is fixedly provided with a boss, and the boss surrounds the outside of the unlocking handle.

[0013] Optionally, the unlocking head is slidingly arranged at the end of the unlocking push rod away from the unlocking handle, and the unlocking push rod is threadedly connected with a locking nut used to lock the unlocking head.

[0014] Optionally, the sliding seat is provided with a mounting groove with an opening arranged upward, the mounting groove is covered with a connecting sleeve, and the elastic member is arranged inside the mounting groove.

[0015] In summary, the present application has at least one of the following beneficial technical effects:

[0016] When the wheelchair needs to be packaged and transported or carried daily, the unlocking handle pushes the unlocking head to slide through the unlocking push rod, the wedge surface of the unlocking head pushes the movable bolt out of the locking hole, thereby releasing the clamping and locking relationship between the locking module and the connecting rod module, so that the first folding mechanism and the second folding mechanism can be folded and contracted, thereby making the two groups of wheelchair frames close to each other to reduce the overall volume of the wheelchair, thereby facilitating the packaging, transportation and daily carrying of the overall wheelchair. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 is the overall structural perspective view of the present application.

[0018] Fig. 2 is the structural perspective view of the folding module in the unfolded state in the present application.

[0019] Fig. 3 is the structural perspective view of the folding module in the condensed state in the present application.

[0020] Fig. 4 is the sectional view of the folding module in the present application.

[0021] BRIEF DESCRIPTION OF REFERENCE NUMERALS: 1, wheelchair frame; 2, folding module; 21, first folding mechanism; 22, second folding mechanism; 3, connecting rod module; 31, locking hole; 4, locking module; 41, sliding seat; 42, movable bolt; 43, elastic member; 44, mounting groove; 45, connecting sleeve; 5, unlocking module; 51, unlocking push rod; 52, unlocking head; 53, unlocking handle; 54, inclined wedge surface; 6, supporting mechanism; 71, folding plate; 72, connecting plate; 8, boss; 9, locking nut. DETAILED DESCRIPTION

[0022] The following will be described in detail below in combination with the accompanying Figs. 1 to 4 The present application will be further described in detail.

[0023] The present application discloses a folding structure of a wheelchair.

[0024] Reference will be made to Figs. 1-4 The folding structure of the wheelchair comprises a wheelchair frame 1 for providing a mounting base, a folding module 2, a connecting rod module 3, a locking module 4, and an unlocking module 5; wherein the wheelchair frame 1 is configured in two groups, the two groups of wheelchair frames 1 are symmetrically and spacedly arranged, and the two groups of wheelchair frames 1 are integrally designed by using carbon fiber material respectively, so that the wheelchair frame 1 has the performance of light weight and high strength; the folding structure composed of the folding module 2, the connecting rod module 3, the locking module 4, and the unlocking module 5 is connected between the two groups of wheelchair frames 1 and has the functions of unfolding or condensing, which not only can drive the two groups of wheelchair frames 1 to unfold each other for use, but also can drive the two groups of wheelchair frames 1 to condense each other to reduce the overall volume of the wheelchair, thereby facilitating the packaging, transportation, and daily carrying of the whole wheelchair.

[0025] The folding module 2 specifically comprises a first folding mechanism 21 and a second folding mechanism 22; wherein the first folding mechanism 21 and the second folding mechanism 22 have the same overall structure, and are both arranged between the two groups of wheelchair frames 1 and are arranged at intervals, and both have the functions of unfolding and shrinking; the first folding mechanism 21 and the second folding mechanism 22 both comprise two groups of folding plates 71 and a connecting plate 72, the two groups of folding plates 71 are symmetrically and intervaliy arranged, and the two groups of folding plates 71 are respectively hingedly arranged on the two groups of wheelchair frames 1 away from each other, and the connecting plate 72 is respectively hingedly arranged on the two groups of folding plates 71 close to each other on both sides, by controlling the two groups of folding plates 71 to be unfolded or shrunk synchronously relative to the connecting plate 72, the folding functions of the first folding mechanism 21 and the second folding mechanism 22 can be realized, and the two groups of wheelchair frames 1 are driven to shrink each other to reduce the overall volume of the wheelchair.

[0026] The connecting rod module 3 is a metal circular tube structure, the two ends of the connecting rod module 3 are respectively vertically and fixedly arranged on the connecting plates 72 of the first folding mechanism 21 and the second folding mechanism 22, and the two ends of the connecting rod module 3 are both throughly arranged on the two groups of connecting plates 72, so that in the process of the connecting rod module 3 driving the two connecting plates 72 to move synchronously, the two groups of folding plates 71 of the first folding mechanism 21 and the two groups of folding plates 71 of the second folding mechanism 22 are unfolded or shrunk synchronously, so as to realize the unfolding or shrinking of the first folding mechanism 21 and the second folding mechanism 22 synchronously.

[0027] The locking module 4 is slidingly arranged outside the connecting rod module 3, the support mechanism 6 is hingedly arranged between the locking module 4 and the first folding mechanism 21, and when the locking module 4 slides to a predetermined position of the connecting rod module 3, the locking module 4 and the connecting rod module 3 are mutually clamped and locked, so that the locking module 4 pushes the first folding mechanism 21 to keep an unfolded state through the support mechanism 6. Specifically, the locking module 4 comprises a sliding seat 41, a movable bolt 42 and an elastic piece 43, the sliding seat 41 is slidingly arranged outside the connecting rod module 3, the support mechanism 6 is a metal supporting rod structure and is provided with two groups, one end of the two groups of support mechanisms 6 is hingedly arranged on both sides of the sliding seat 41 respectively, the other end of the two groups of support mechanisms 6 is hingedly arranged on the two groups of folding plates 71 of the first folding mechanism 21 respectively, the sliding seat 41 is internally provided with a mounting groove 44 arranged with an upward opening, the groove opening of the mounting groove 44 is covered by a connecting sleeve 45 from top to bottom by interference fit, and the elastic piece 43 is arranged inside the mounting groove 44 in advance, the movable bolt 42 is slidingly arranged in the mounting groove 44 inside the sliding seat 41, the elastic piece 43 adopts a compression spring structure, the elastic piece 43 is arranged in the mounting groove 44 inside the sliding seat 41, and the elastic piece 43 abuts against the movable bolt 42 to push the movable bolt 42 to slide to abut against the outside of the connecting rod module 3, the connecting rod module 3 is provided with a locking hole 31 matched with the movable bolt 42, and when the sliding seat 41 slides to a predetermined position of the connecting rod module 3, the movable bolt 42 is inserted into the locking hole 31. When the sliding seat 41 slides to a predetermined position of the connecting rod module 3, the sliding seat 41 is locked by the clamping and matching of the movable bolt 42 and the locking hole 31, at this time, the sliding seat 41 supports and expands the two groups of folding plates 71 of the first folding mechanism 21 through the support mechanism 6, so that the first folding mechanism 21, the support mechanism 6 and the connecting rod module 3 form a stable triangular structure, thereby realizing the effect that the locking module 4 pushes the first folding mechanism 21 to keep an unfolded state through the support mechanism 6.

[0028] The unlocking module 5 is slidingly arranged in the connecting rod module 3, and is used to release the clamping and locking relationship between the locking module 4 and the connecting rod module 3, so as to restore the sliding freedom of the locking module 4 relative to the connecting rod module 3; the unlocking module 5 specifically comprises an unlocking push rod 51, an unlocking head 52 and an unlocking handle 53, the unlocking push rod 51 is slidingly arranged in the connecting rod module 3 through a preset sliding support, the unlocking head 52 is located near the position of the locking hole 31, the unlocking head 52 is fixedly arranged at one end of the unlocking push rod 51, and the unlocking head 52 is provided with a wedge surface 54, the wedge surface 54 can push the movable bolt 42 to slide against the elastic force of the elastic piece 43, so that the wedge surface 54 can push the movable bolt 42 to exit the locking hole 31, and the unlocking handle 53 is arranged at the end of the unlocking push rod 51 away from the unlocking head 52, and is used to push the unlocking push rod 51 to slide relative to the connecting rod module 3. When the unlocking handle 53 pushes the unlocking head 52 to slide through the unlocking push rod 51, the wedge surface 54 of the unlocking head 52 pushes the movable bolt 42 to exit the locking hole 31, thereby releasing the clamping and locking relationship between the locking module 4 and the connecting rod module 3, so that the first folding mechanism 21 and the second folding mechanism 22 can be folded and contracted.

[0029] In the embodiment, one end of the unlocking handle 53 is provided with a threaded hole, and one end of the unlocking push rod 51 is provided with an external thread, so that the unlocking handle 53 is threadedly connected to the end of the unlocking push rod 51 away from the unlocking head 52, thereby facilitating replacement of the unlocking handle 53 after damage.

[0030] In the embodiment, the unlocking head 52 is provided with a through hole in the middle, so that the unlocking head 52 can be slidingly arranged at the end of the unlocking push rod 51 away from the unlocking handle 53, and the end of the unlocking push rod 51 away from the unlocking handle 53 is threadedly connected with a locking nut 9 used to lock the unlocking head 52, thereby facilitating replacement of the unlocking head 52 after damage.

[0031] In the embodiment, the connecting plate 72 of the second folding mechanism 22 is fixedly provided with a boss 8, the boss 8 surrounds the outside of the unlocking handle 53, and the boss 8 can shield the unlocking handle 53, so as to prevent the clamping and locking relationship between the locking module 4 and the connecting rod module 3 from being released due to accidental touch of the unlocking handle 53.

[0032] Principle of implementation: when the wheelchair is needed, the sliding seat 41 is manually pushed to slide the connecting rod module 3 in the direction of approaching the first folding mechanism 21, when the sliding seat 41 slides to the predetermined position of the connecting rod module 3, the movable bolt 42 and the locking hole 31 are aligned, and the movable bolt 42 is pushed into the locking hole 31 by the elastic member 43, at this time the sliding seat 41 supports the two sets of folding plates 71 of the first folding mechanism 21 through the supporting mechanism 6 to form the supporting and unfolding effect, so that the first folding mechanism 21, the supporting mechanism 6 and the connecting rod module 3 form a stable triangular structure, thereby realizing the effect that the locking module 4 pushes the first folding mechanism 21 to keep the unfolded state through the supporting mechanism 6, at the same time, the connecting rod module 3 pushes the second folding mechanism 22 to keep the unfolded state in the opposite direction, so that the two sets of wheelchair frames 1 keep the unfolded state to provide the seat between the two sets of wheelchair frames 1 for the user to sit on;

[0033] When the wheelchair needs to be packaged and transported / daily carried, the unlocking handle 53 pushes the unlocking head 52 to slide through the unlocking push rod 51, the inclined wedge surface 54 of the unlocking head 52 pushes the movable bolt 42 out of the locking hole 31, thereby releasing the clamping and locking relationship between the locking module 4 and the connecting rod module 3, so that the first folding mechanism 21 and the second folding mechanism 22 can be folded and contracted, thereby making the two sets of wheelchair frames 1 approach each other to reduce the overall volume of the wheelchair, thereby facilitating the packaging, transportation and daily carrying of the overall wheelchair.

[0034] The embodiments of the specific implementation are the preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A folding structure of a wheelchair, characterized by: The utility model provides a wheelchair frame, which comprises a folding module, a connecting rod module, a locking module and an unlocking module. The folding module comprises a first folding mechanism and a second folding mechanism. The connecting rod module is arranged between the first folding mechanism and the second folding mechanism and is used for synchronously unfolding or folding the first folding mechanism and the second folding mechanism. The locking module is slidably arranged outside the connecting rod module. The unlocking module is slidably arranged inside the connecting rod module and is used for releasing the clamping and locking relationship between the locking module and the connecting rod module. The first folding mechanism and the second folding mechanism each comprise two sets of folding plates and a connecting plate.

2. The folding structure of a wheelchair according to claim 1, wherein: The locking module comprises a sliding seat, a movable bolt and an elastic member.

3. The folding structure of a wheelchair according to claim 1, wherein: The unlocking module comprises an unlocking push rod, an unlocking head and an unlocking handle.

4. The folding structure of a wheelchair according to claim 3, wherein: The unlocking head is arranged at one end of the unlocking push rod. The unlocking handle is arranged at the other end of the unlocking push rod. The unlocking handle is used for sliding the unlocking push rod, so that the inclined wedge surface pushes the movable bolt out of the locking hole.

5. The folding structure of a wheelchair according to claim 4, wherein: The unlocking handle (53) is threadedly connected to the unlocking push rod (51) at an end away from the unlocking head (52).

6. The folding structure of a wheelchair according to claim 4, wherein: The connecting plate (72) of the second folding mechanism (22) is fixedly provided with a boss (8) surrounding the outer side of the unlocking handle (53).

7. The folding structure of a wheelchair according to claim 4, wherein: The unlocking head (52) is slidingly arranged at an end of the unlocking push rod (51) away from the unlocking handle (53), and the unlocking push rod (51) is threadedly connected with a locking nut (9) for locking the unlocking head (52).

8. The folding structure of a wheelchair according to claim 3, wherein: The sliding seat (41) is provided with a mounting groove (44) with an opening arranged upwards, the mounting groove (44) is covered with a connecting sleeve (45), and the elastic member (43) is arranged inside the mounting groove (44).

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