Wheelchair

Abstract

The utility model provides a wheelchair which comprises a backrest frame, a seat frame and a locking assembly, and the locking assembly comprises a first rotating shaft, a second rotating shaft, a locking piece, a limiting piece and an elastic piece; the seat frame is rotationally connected to the backrest frame through the first rotating shaft, the locking piece is rotationally connected to the backrest frame through the second rotating shaft, the limiting piece is arranged on the seat frame, and the elastic piece is connected with the locking piece so as to drive the locking piece to be clamped to the limiting piece. According to the wheelchair, the seat frame and the backrest frame are folded and stored in a rotating connection mode, specifically, during normal use, the elastic piece can drive the locking piece to be clamped to the limiting piece, the seat frame is prevented from rotating continuously, the seat frame is kept in a horizontal state, and when the wheelchair needs to be stored, the locking piece is shifted to be separated from the limiting piece, so that the wheelchair is folded and stored. At the moment, the seat frame can rotate to be stored, the folding effect is better, and storage is more convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to a wheelchair technical field, concretely relates to a wheelchair. BACKGROUND

[0002] The wheelchair is an important tool for assisting patients in treatment and recovery, and it is not only a tool for the disabled to walk, but also more importantly, they can exercise their bodies and participate in social activities with the help of the wheelchair. The ordinary wheelchair is generally composed of a wheelchair frame, wheels and a backrest, and has basic seating and moving functions.

[0003] The volume of the wheelchair is generally large, and the folding method is usually used to reduce the volume to facilitate storage and transportation. The existing foldable wheelchair can only fold the handle or the footboard, which can reduce the volume to a certain extent, but the folded wheelchair still occupies a large space, the folding effect is poor, and it is very troublesome to store. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a wheelchair, which aims to solve the problems of poor folding effect and inconvenience of storage of the existing wheelchair.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A wheelchair is provided, which comprises a backrest frame, a seat frame and a locking assembly, the locking assembly comprises a first rotating shaft, a second rotating shaft, a locking piece, a limiting piece and an elastic piece;

[0007] The seat frame is rotatably connected to the backrest frame through the first rotating shaft, the locking piece is rotatably connected to the backrest frame through the second rotating shaft, the limiting piece is arranged on the seat frame, and the elastic piece is connected with the locking piece to drive the locking piece to be clamped on the limiting piece.

[0008] Optionally, the wheelchair further comprises a pull rod, the number of the locking assemblies is two, the two locking assemblies are arranged on the two sides of the backrest frame respectively, and the two locking assemblies are connected through the pull rod.

[0009] Optionally, the elastic piece is a torsional spring, the elastic piece comprises a spring body and two torsional arms, the spring body is sleeved on the second rotating shaft, one of the torsional arms is connected to the first rotating shaft, the other torsional arm is connected to the pull rod, one end of the locking piece is connected to the pull rod, and the elastic piece is used to drive the other end of the locking piece to be clamped on the limiting piece.

[0010] Optionally, the limiting member comprises a limiting bolt and a limiting nut, the limiting bolt is arranged on the seat frame, the limiting nut is threadedly connected with the limiting bolt, and the limiting nut is used for limiting the limiting bolt from being separated from the seat frame, the locking member is clamped on the limiting bolt, and one end of the locking member used for clamping the limiting bolt is an arc surface.

[0011] Optionally, the locking assembly further comprises a connecting plate, the connecting plate is detachably connected with the back frame, and the first rotating shaft and the second rotating shaft are arranged on the connecting plate.

[0012] Optionally, the locking assembly further comprises a first nut, the first nut is threadedly connected with the first rotating shaft, and the first nut is used for limiting the elastic member from being separated from the first rotating shaft.

[0013] Optionally, the locking assembly further comprises a second nut, the second nut is threadedly connected with the second rotating shaft, and the second nut is used for limiting the locking member from being separated from the second rotating shaft.

[0014] Optionally, the locking assembly further comprises a connecting bolt, the connecting bolt is threadedly connected with the end of the pull rod, and the connecting bolt is used for limiting the elastic member from being separated from the pull rod.

[0015] Optionally, the wheelchair further comprises a seat cushion, a back cushion and a back cloth, the seat cushion is arranged on the seat frame, the back cushion is arranged on the back frame, one end of the back cloth is connected with the back frame, and the other end of the back cloth is connected with the seat cushion.

[0016] Optionally, the wheelchair further comprises a front frame, a rear frame, a front wheel, a rear wheel, a foot frame and a rotating connecting member, one end of the front frame is rotationally connected with the seat frame through the rotating connecting member, the rotating connecting member is used for driving the seat frame to keep a horizontal state, the other end of the front frame is connected with the front wheel, the rear frame is rotationally connected with the back frame, one end of the rear frame is rotationally connected with the front frame, the other end of the rear frame is connected with the rear wheel, and the foot frame is connected with the front frame.

[0017] Compared with the prior art, the wheelchair has the following beneficial effects:

[0018] In the wheelchair, the seat frame and the back frame are rotationally connected to be folded and stored, specifically, when in normal use, the elastic member can drive the locking member to be clamped on the limiting member, the seat frame is prevented from continuing to rotate, and the seat frame keeps a horizontal state, when storage is needed, the locking member is actuated to be separated from the limiting member, and then the seat frame can be rotated upward to be folded and stored, the folding effect is better, and the storage is more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0020] Figure 1 This is a schematic structural diagram of a wheelchair according to the present invention;

[0021] Figure 2 This is a schematic structural diagram of the wheelchair of the present invention from another angle;

[0022] Figure 3 for Figure 2 Enlarged schematic diagram of point A in the middle.

[0023] In the figure: 1. Backrest frame; 2. Seat frame; 3. Locking assembly; 31. First rotating shaft; 32. Second rotating shaft; 33. Locking member; 34. Limiting member; 341. Limiting bolt; 342. Limiting nut; 35. Elastic member; 36. Connecting plate; 37. First nut; 38. Second nut; 39. Connecting bolt; 4. Pull rod; 5. Seat cushion; 6. Backrest cushion; 7. Backrest cloth; 8. Front frame; 9. Rear frame; 10. Front wheel; 11. Rear wheel; 12. Footrest frame; 13. Rotating connecting member. DETAILED DESCRIPTION

[0024] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or to implicitly indicate the quantity of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features.

[0027] The following combination Figures 1 to 3 The present invention describes a wheelchair.

[0028] like Figures 1 to 3 As shown, the utility model provides a wheelchair, including a backrest frame 1, a seat frame 2 and a locking assembly 3, the locking assembly 3 including a first rotating shaft 31, a second rotating shaft 32, a locking member 33, a limiting member 34 and an elastic member 35; the seat frame 2 is rotatably connected to the backrest frame 1 through the first rotating shaft 31, the locking member 33 is rotatably connected to the backrest frame 1 through the second rotating shaft 32, the limiting member 34 is provided on the seat frame 2, and the elastic member 35 is connected to the locking member 33 to drive the locking member 33 to be engaged with the limiting member 34.

[0029] For the convenience of explanation, in this embodiment, each direction is as follows Figure 1 shown.

[0030] In the wheelchair provided in this embodiment, the seat frame 2 and the backrest frame 1 are folded and stored by means of a rotational connection. Specifically, during normal use, the elastic member 35 can drive the locking member 33 to engage with the limiting member 34 to prevent the seat frame 2 from continuing to rotate, so that the seat frame 2 remains in a horizontal state. When storage is required, the locking member 33 is moved to move the locking member 33 away from the limiting member 34. At this time, the seat frame 2 can be rotated upward to achieve folding and storage, which has a better folding effect and is more convenient to store.

[0031] In some embodiments, the wheelchair also includes a pull rod 4, and there are two locking assemblies 3. The two locking assemblies 3 are respectively arranged on both sides of the backrest frame 1, and the two locking assemblies 3 are connected by the pull rod 4. The two locking assemblies 3 are respectively arranged on the left and right sides of the backrest frame 1, and the two locking assemblies 3 are connected by the pull rod 4. By pulling the pull rod 4, the two locking assemblies 3 can be opened at the same time, which is more convenient to use.

[0032] In some embodiments, the elastic member 35 is a torsion spring, which includes a spring body and two torsion arms. The spring body is sleeved on the second rotating shaft 32, one torsion arm is connected to the first rotating shaft 31, and the other torsion arm is connected to the pull rod 4. One end of the locking member 33 is connected to the pull rod 4, and the elastic member 35 is used to drive the other end of the locking member 33 to be clamped to the limit member 34. By setting the torsion spring, the locking member 33 can be better provided with elastic force, so that the locking member 33 can be more firmly clamped to the limit member 34, which can improve the safety of the wheelchair during normal use.

[0033] In some embodiments, the limiting member 34 includes a limiting bolt 341 and a limiting nut 342. The limiting bolt 341 is provided on the seat frame 2. The limiting nut 342 is threadedly connected to the limiting bolt 341 to limit the limiting bolt 341 from detaching from the seat frame 2. The locking member 33 is clamped on the limiting bolt 341. One end of the locking member 33 used to clamp the limiting bolt 341 is an arc surface. The limiting bolt 341 can be tightly fixed to the seat frame 2 through the limiting nut 342 and will not loosen. The end of the locking member 33 clamped on the limiting bolt 341 is an arc surface, which can be more tightly buckled on the limiting bolt 341, resulting in a better fixing effect.

[0034] In some embodiments, the locking assembly 3 also includes a connecting plate 36, which is detachably connected to the backrest frame 1. The first rotating shaft 31 and the second rotating shaft 32 are both provided on the connecting plate 36. Specifically, the connecting plate 36 is installed on the backrest frame 1 through bolts and nuts, which can provide good support for the first rotating shaft 31 and the second rotating shaft 32.

[0035] In some embodiments, the locking assembly 3 further includes a first nut 37, which is threadedly connected to the first rotating shaft 31 and is used to limit the elastic member 35 from being separated from the first rotating shaft 31. This makes it very convenient to disassemble or install, and allows for more convenient replacement of parts.

[0036] In some embodiments, the locking assembly 3 further includes a second nut 38, which is threadedly connected to the second rotating shaft 32 and is used to limit the locking member 33 from being separated from the second rotating shaft 32. This makes it very convenient to disassemble or install, and allows for more convenient replacement of parts.

[0037] In some embodiments, the locking assembly 3 also includes a connecting bolt 39, which is threadedly connected to the end of the pull rod 4 and is used to limit the elastic member 35 from disengaging from the pull rod 4. Specifically, the torsion arm of the torsion spring can be sleeved on the connecting bolt 39 to provide better support. In addition, the use of the connecting bolt 39 for connection makes it very convenient to disassemble and install, and it is more convenient to replace parts.

[0038] In some embodiments, the wheelchair also includes a seat cushion 5, a backrest cushion 6 and a backrest cloth 7. The seat cushion 5 is arranged on the seat frame 2, the backrest cushion 6 is arranged on the backrest frame 1, one end of the backrest cloth 7 is connected to the backrest frame 1, and the other end of the backrest cloth 7 is connected to the seat cushion 5. Specifically, the seat cushion 5 is connected through the soft backrest cloth 7, which can better realize the folding and storage function, and at the same time can provide good support effect for the user.

[0039] In some embodiments, the material of the seat cushion 5 is leather, and in some other embodiments, the material of the seat cushion 5 is cloth.

[0040] In some embodiments, the wheelchair also includes a front frame 8, a rear frame 9, a front wheel 10, a rear wheel 11, a footrest frame 12 and a rotating connector 13. One end of the front frame 8 is rotatably connected to the seat frame 2 through the rotating connector 13. The rotating connector 13 is used to drive the seat frame 2 to maintain a horizontal state. The other end of the front frame 8 is connected to the front wheel 10, the rear frame 9 is rotatably connected to the backrest frame 1, one end of the rear frame 9 is rotatably connected to the front frame 8, the other end of the rear frame 9 is connected to the rear wheel 11, and the footrest frame 12 is connected to the front frame 8. All components of the wheelchair are connected by a rotating connection, which can be folded and stored more conveniently, with a better folding effect and less space occupied.

[0041] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A wheelchair, characterized in that: It comprises a backrest frame (1), a seat frame (2) and a locking assembly (3), wherein the locking assembly (3) comprises a first rotating shaft (31), a second rotating shaft (32), a locking member (33), a limiting member (34) and an elastic member (35); The seat frame (2) is rotatably connected to the backrest frame (1) via the first rotating shaft (31), the locking member (33) is rotatably connected to the backrest frame (1) via the second rotating shaft (32), the limiting member (34) is provided on the seat frame (2), and the elastic member (35) is connected to the locking member (33) to drive the locking member (33) to be engaged with the limiting member (34).

2. The wheelchair according to claim 1, characterized in that The wheelchair further comprises a pull rod (4), the number of the locking assemblies (3) is two, the two locking assemblies (3) are respectively arranged on both sides of the backrest frame (1), and the two locking assemblies (3) are connected via the pull rod (4).

3. The wheelchair according to claim 2, characterized in that The elastic member (35) is a torsion spring, and the elastic member (35) includes a spring body and two torsion arms. The spring body is sleeved on the second rotating shaft (32), one of the torsion arms is connected to the first rotating shaft (31), and the other torsion arm is connected to the pull rod (4). One end of the locking member (33) is connected to the pull rod (4), and the elastic member (35) is used to drive the other end of the locking member (33) to be clamped to the limiting member (34).

4. The wheelchair according to claim 2, characterized in that The limiting member (34) includes a limiting bolt (341) and a limiting nut (342), wherein the limiting bolt (341) is provided on the seat frame (2), and the limiting nut (342) is threadedly connected to the limiting bolt (341) for limiting the limiting bolt (341) from being separated from the seat frame (2), and the locking member (33) is clamped on the limiting bolt (341), and one end of the locking member (33) for clamping the limiting bolt (341) is an arc surface.

5. The wheelchair according to claim 2, characterized in that The locking assembly (3) further comprises a connecting piece (36), the connecting piece (36) being detachably connected to the backrest frame (1), and the first rotating shaft (31) and the second rotating shaft (32) being both arranged on the connecting piece (36).

6. The wheelchair according to claim 2, characterized in that The locking assembly (3) further comprises a first nut (37), wherein the first nut (37) is threadedly connected to the first rotating shaft (31) and is used to limit the elastic member (35) from being separated from the first rotating shaft (31).

7. The wheelchair according to claim 2, characterized in that The locking assembly (3) further comprises a second nut (38), wherein the second nut (38) is threadedly connected to the second rotating shaft (32) and is used to restrict the locking member (33) from being separated from the second rotating shaft (32).

8. The wheelchair according to claim 2, characterized in that The locking assembly (3) further comprises a connecting bolt (39), wherein the connecting bolt (39) is threadedly connected to the end of the pull rod (4) and is used to limit the elastic member (35) from being separated from the pull rod (4).

9. The wheelchair according to claim 1, characterized in that The wheelchair further comprises a seat cushion (5), a backrest cushion (6) and a backrest cloth (7); the seat cushion (5) is arranged on the seat frame (2); the backrest cushion (6) is arranged on the backrest frame (1); one end of the backrest cloth (7) is connected to the backrest frame (1); and the other end of the backrest cloth (7) is connected to the seat cushion (5).

10. The wheelchair according to claim 1, wherein: The wheelchair further comprises a front frame (8), a rear frame (9), a front wheel (10), a rear wheel (11), a pedal frame (12) and a rotating connecting member (13), one end of the front frame (8) is rotatably connected to the seat frame (2) through the rotating connecting member (13), and the rotating connecting member (13) is used to drive the seat frame (2) to maintain a horizontal state, the other end of the front frame (8) is connected to the front wheel (10), the rear frame (9) is rotatably connected to the backrest frame (1), one end of the rear frame (9) is rotatably connected to the front frame (8), the other end of the rear frame (9) is connected to the rear wheel (11), and the pedal frame (12) is connected to the front frame (8).

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