Quickly-assembled tractor for wheelchair

Abstract

A rapidly-assembled tractor for a wheelchair comprises a frame (1), a hub motor (2) and a battery (3) for providing electric energy for the hub motor (2) are arranged on the frame (1), a pair of handles (4) for controlling the direction of a hub are arranged at one end of the top of the frame (1), and a connecting sleeve (5) is arranged on the frame (1). And the connecting sleeve (5) is respectively provided with a headstock support frame (6), a headstock traction rod (7) and a traction seat (8) which is arranged on the wheelchair frame and is matched with the headstock traction rod (7). The electric wheelchair has the advantages that the tractor and the wheelchair are connected in a split mode, installation is convenient, and independent long-distance traveling is facilitated; the tractor can be independently placed after being detached, the tractor head traction rod and the traction base can be rapidly connected and separated, and use is convenient and rapid.

Description

Technical Field

[0001] The utility model relates to the technical field of wheelchair auxiliary equipment, in particular to a quick-assembly tractor for a wheelchair. Background Art

[0002] Manual wheelchairs have been widely used as a means of transportation for the sick, disabled, elderly and weak, but the user's range of movement is limited and long-distance travel is impossible. The integrated electric wheelchair has certain restrictions on the use environment and is not flexible enough. Utility Model Content

[0003] The purpose of the present utility model is to provide a quick assembly tractor for a wheelchair in order to overcome the above-mentioned deficiencies.

[0004] The utility model includes a wheel frame, on which wheel hub motors and batteries for providing electrical energy to the wheel hub motors are respectively provided, a pair of handles for controlling the direction of the wheel hubs are provided at one end of the top of the frame, a connecting sleeve is provided on the frame, and a front support frame, a front traction rod and a traction seat installed on the wheelchair frame and matched with the front traction rod are respectively provided on the connecting sleeve.

[0005] A connecting seat is provided on the connecting sleeve, and one end of the front support frame and the front traction rod are respectively hinged on the connecting seat through a rotating shaft. The front support frame and the front traction rod are both provided with pin shaft mounting holes, and the connecting seat is provided with a group of adjustment positioning holes that match the pin shaft mounting holes of the front support frame and the front traction rod respectively.

[0006] The front support frame is assembled from a fixed section and a telescopic section. The telescopic section is movably inserted into the fixed section. A limiting screw is provided on the fixed section, and a group of locking holes that cooperate with the limiting screw are provided on the telescopic section. A transverse support rod is provided at one end of the bottom of the telescopic section, and anti-slip rubber sleeves are provided at both ends of the transverse support rod.

[0007] The traction seat includes a crossbeam, a connecting rod is provided in the middle of the crossbeam, and the ends of the connecting rod are provided with a fixed hook, a movable hook and a locking hook from front to back. The opening of the fixed hook is provided with a limiting locking rod for limiting the bottom of the front traction rod. The front traction rod is provided with a pair of positioning shafts that cooperate with the fixed hook and the movable hook respectively.

[0008] The movable hook and the locking hook are both rotatably mounted on the connecting rod through a pin shaft, and one end of the top of the movable hook and the locking hook is tightened by a spring; both ends of the crossbeam are respectively provided with fixed pipe clamps connected to the wheelchair frame.

[0009] The crossbeam is a hollow tube with a transverse adjustment rod inside. The transverse adjustment rod is movably inserted into the crossbeam. Locking screws are respectively provided in the middle and both ends of the crossbeam. The fixed pipe clamp is detachably installed on the transverse adjustment rod.

[0010] The fixed pipe clamp is a cross pipe clamp. Both ends of the beam are provided with movable pipe sleeves. The movable pipe sleeves are sleeved on the beam and locked by screws. One end of the cross pipe clamp is fixedly connected to the movable pipe sleeve.

[0011] The frame is assembled from a wheel hub mounting part and a handle mounting part. The wheel hub motor and the connecting sleeve are both mounted on the wheel hub mounting part. The handle is mounted on the handle mounting part. The handle mounting part is movably plugged into the wheel hub mounting part and locked by a locking piece.

[0012] The advantages of the utility model are that the tractor and the wheelchair are connected in a split type, which is easy to install and convenient for long-distance travel alone; the tractor can be placed independently after being disassembled, and the front traction rod and the traction seat can be quickly connected and separated, which is convenient and quick to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic structural diagram of the utility model.

[0014] Figure 2 It is a schematic diagram of the front support frame and the front traction rod structure.

[0015] Figure 3 It is a schematic diagram of the fifth wheel structure.

[0016] Figure 4 It is a structural schematic diagram of the utility model in use state. DETAILED DESCRIPTION

[0017] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention. It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0019] In the description of the embodiments of the present invention, it should be noted that if the terms "upper", "lower", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the product of the utility model is usually placed when in use. This is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it should not be understood as limiting the present invention. In addition, if the terms "first", "second", etc. appear in the description of the present invention, they are only used to distinguish the description and should not be understood as indicating or implying relative importance.

[0020] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0021] As shown in the accompanying drawings, the utility model includes a frame 1, on which are provided wheel hub motors 2 and batteries 3 for providing electrical energy to the wheel hub motors 2. A pair of handles 4 for controlling the direction of the wheel hubs are provided at one end of the top of the frame 1. A connecting sleeve 5 is provided on the frame 1, and a front support frame 6, a front traction rod 7 and a traction seat 8 mounted on the wheelchair frame and cooperating with the front traction rod 7 are provided on the connecting sleeve 5.

[0022] The bottom of the frame 1 is a fork structure for mounting the hub motor 2. The fork is equipped with a fender, and the front end of the fender is equipped with a headlight electrically connected to the battery 3. The right handlebar 4 is equipped with a power switch and a throttle and accelerator handle. The left handlebar 4 is equipped with a light switch and a horn switch, similar to the handlebar structure of existing electric bicycles.

[0023] The connecting sleeve 5 is movably connected to the frame 1, that is, when the frame 1 rotates, the connecting sleeve 5 is relatively fixed. When the tractor is not connected to the wheelchair, the front support frame 6 can support the tractor.

[0024] Furthermore, in this case, both handles 4 are provided with a brake handbrake for braking the hub of the hub motor 2.

[0025] The battery 3 is detachably mounted on the vehicle frame 1 for easy replacement. The battery 3 is used to power various electronic devices on the tractor.

[0026] Furthermore, a connecting seat 9 is provided on the connecting sleeve 5, and one end of the front support frame 6 and the front traction rod 7 are respectively hinged on the connecting seat 9 through a rotating shaft. The front support frame 6 and the front traction rod 7 are both provided with pin shaft mounting holes, and the connecting seat 9 is provided with a group of adjustment positioning holes that match the pin shaft mounting holes of the front support frame 6 and the front traction rod 7 respectively.

[0027] That is, the front support frame 6 and the front traction rod 7 can both be adjusted in angle on the connecting seat 9. After the front traction rod 7 is connected to the traction seat 8, the frame 1 is pushed forward by the handle 4. After adjusting to the appropriate angle, it can be fixed with the pin. After the handle 4 is pushed forward, the front support frame 6 will maintain a certain distance from the ground. The distance between the front support frame 6 and the ground should be maintained at least 100 mm to prevent the front support frame 6 from scraping against the ground during use.

[0028] Furthermore, the front support frame 6 is assembled from a fixed section 10 and a telescopic section 11. The telescopic section 11 is movably inserted into the fixed section 10. A limiting screw is provided on the fixed section 10. A group of locking holes that cooperate with the limiting screw are provided on the telescopic section 11. A transverse support rod 12 is provided at one end of the bottom of the telescopic section 11, and anti-slip rubber sleeves are provided at both ends of the transverse support rod 12.

[0029] That is, the front support frame 6 is a telescopic rod structure that can be adjusted in length. The transverse support rod 12 and the hub motor 2 form a three-point support structure, which makes the front of the vehicle stable and the anti-skid rubber sleeve can effectively prevent the vehicle from sliding and tipping over after parking.

[0030] Specifically, the traction seat 8 includes a crossbeam 15, a connecting rod 16 is provided in the middle of the crossbeam 15, and the ends of the connecting rod 16 are respectively provided with a fixed hook 17, a movable hook 18 and a locking hook 19 from front to back. The opening of the fixed hook 17 is provided with a limiting locking rod 20 for limiting the bottom of the front traction rod 7. The front traction rod 7 is provided with a pair of positioning shafts 21 respectively cooperating with the fixed hook 17 and the movable hook 18.

[0031] The movable hook head 18 and the locking hook head 19 are both rotatably mounted on the connecting rod 16 through a pin shaft, and the top end of the movable hook head 18 and the locking hook head 19 are tightened by a spring; both ends of the crossbeam 15 are respectively provided with fixed pipe clamps 22 connected to the wheelchair frame.

[0032] One end of the connecting rod 16 is welded to the crossbeam 15, and the traction seat 8 is fixed to the wheelchair frame through the fixed pipe clamp 22. When the front of the vehicle is installed, the front traction rod 7 is inserted under the connecting rod 16, and the two positioning shafts 21 are aligned with the corresponding fixed hook head 17 and movable hook head 18 respectively.

[0033] In this case, there are two fixed hooks 17, two movable hooks 18, and two locking hooks 19, which are symmetrically located on both sides of the connecting rod 16. The hooks are located at the bottom, and the corresponding positioning shafts 21 also extend to both sides of the vehicle head traction rod 7 to cooperate with the corresponding hooks. The locking hook 19 is located on the outside of the movable hook 18, that is, the positioning shaft 21 at the front end enters the locking hook 19 and the movable hook 18 at the same time. Under the action of the spring, the movable hook 18 and the locking hook 19 have a pulling force in opposite directions, which is used to push the entered positioning shaft 21 upward so that the vehicle head traction rod 7 can be tightly attached to the connecting rod 16. After the connection is completed, the limit locking rod 20 is inserted to limit the bottom of the vehicle head traction rod 7, and the entire vehicle head assembly is completed. On the contrary, when disassembling, you only need to pull out the limit locking rod 20, pull the locking hook 19 forward, and then push the vehicle head forward to quickly pull the vehicle head traction rod 7 out of the traction seat 8.

[0034] Furthermore, the crossbeam 15 is a hollow tube, and a transverse adjustment rod 24 is provided in the crossbeam 15 , which is movably inserted in the crossbeam 15 , and locking screws are provided in the middle and both ends of the crossbeam 15 , respectively, and the fixed pipe clamp 22 is detachably mounted on the transverse adjustment rod 24 .

[0035] The fixed pipe clamp 22 is a cross pipe clamp. Both ends of the cross beam 15 are provided with movable pipe sleeves 25. The movable pipe sleeves 25 are sleeved on the cross beam 15 and locked by screws. One end of the cross pipe clamp is fixedly connected to the movable pipe sleeve 25.

[0036] The crossbeam 15 and the transverse adjustment rod 24 are both hollow square tubes, and can be quickly installed and fixed according to the width of the wheelchair frame in combination with the movable tube sleeve 25.

[0037] Furthermore, the frame 1 is assembled from a wheel hub mounting portion and a handlebar mounting portion, on which the wheel hub motor 2 and connecting sleeve 5 are mounted. The handlebar 4 is mounted on the handlebar mounting portion. The handlebar mounting portion is movably plugged into the wheel hub mounting portion and locked by a locking member. The locking member is a lever that allows the height of the handlebar 4 to be adjusted according to the user's preference.

Claims

1. A quick assembly tractor for a wheelchair, characterized in that The wheelchair comprises a frame (1), the frame (1) is provided with wheel hub motors (2) and batteries (3) for providing electric energy to the wheel hub motors (2), a pair of handles (4) for controlling the direction of the wheel hubs are provided at one end of the top of the frame (1), the frame (1) is provided with a connecting sleeve (5), and the connecting sleeve (5) is provided with a front support frame (6), a front traction rod (7), and a traction seat (8) mounted on the wheelchair frame and matched with the front traction rod (7); The traction seat (8) comprises a crossbeam (15), a connecting rod (16) is provided in the middle of the crossbeam (15), and the ends of the connecting rod (16) are respectively provided with a fixed hook (17), a movable hook (18) and a locking hook (19) from front to rear, and the opening of the fixed hook (17) is provided with a limiting locking rod (20) for limiting the bottom of the front traction rod (7), and the front traction rod (7) is provided with a pair of positioning shafts (21) respectively matched with the fixed hook (17) and the movable hook (18), and the movable hook (18) and the locking hook (19) are both rotatably mounted on the connecting rod (16) through a pin shaft, and the top ends of the movable hook (18) and the locking hook (19) are tightened by a spring; and fixed pipe clamps (22) connected to the wheelchair frame are respectively provided at both ends of the crossbeam (15).

2. A wheelchair quick assembly tractor according to claim 1, characterized in that A connecting seat (9) is provided on the connecting sleeve (5), one end of the front support frame (6) and the front traction rod (7) are respectively hinged on the connecting seat (9) through a rotating shaft, the front support frame (6) and the front traction rod (7) are both provided with a pin shaft mounting hole, and the connecting seat (9) is provided with a group of adjustment positioning holes respectively matched with the pin shaft mounting holes of the front support frame (6) and the front traction rod (7).

3. A wheelchair quick assembly tractor according to claim 2, characterized in that The front support frame (6) is assembled from a fixed section (10) and a telescopic section (11). The telescopic section (11) is movably inserted into the fixed section (10). A limit screw is provided on the fixed section (10). A group of locking holes matching the limit screw are provided on the telescopic section (11). A transverse support rod (12) is provided at one end of the bottom of the telescopic section (11). Anti-slip rubber sleeves are provided at both ends of the transverse support rod (12).

4. The wheelchair quick assembly tractor according to claim 1, characterized in that The cross beam (15) is a hollow tube. A transverse adjustment rod (24) is provided inside the cross beam (15). The transverse adjustment rod (24) is movably inserted into the cross beam (15). Locking screws are provided at the middle and both ends of the cross beam (15). The fixed pipe clamp (22) is detachably mounted on the transverse adjustment rod (24).

5. A wheelchair quick assembly tractor according to claim 4, characterized in that The fixed pipe clamp (22) is a cross pipe clamp. The two ends of the cross beam (15) are respectively provided with movable pipe sleeves (25). The movable pipe sleeves (25) are sleeved on the cross beam (15) and locked by screws. One end of the cross pipe clamp is fixedly connected to the movable pipe sleeve (25).

6. The wheelchair quick assembly tractor according to claim 1, characterized in that The frame (1) is assembled from a wheel hub mounting portion and a handlebar mounting portion, the wheel hub motor (2) and the connecting sleeve (5) are both mounted on the wheel hub mounting portion, the handlebar (4) is mounted on the handlebar mounting portion, and the handlebar mounting portion is movably plugged into the wheel hub mounting portion and locked by a locking member.

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