Novel multi-wheelchair rapid connection flexible traction device

Abstract

The utility model provides a novel multi-wheelchair rapid connection flexible traction device. The novel multi-wheelchair rapid connection flexible traction device comprises a first connecting piece, a second connector; the third connecting piece is used for connecting the first connecting piece and the second connecting piece; the first connecting piece comprises two first connecting assemblies which are oppositely arranged; the second connecting piece comprises a wheel connecting assembly and a second connecting assembly connected to the wheel connecting assembly. The wheel connecting assembly comprises two oppositely-arranged wheel connecting modules and a distance adjusting module connected between the two wheel connecting modules and used for adjusting the distance between the two wheel connecting modules. By means of the device, a plurality of wheelchairs can be quickly and sequentially connected in series, the connected wheelchairs can be pushed at the same time only by two nurses, and the transfer speed of people with disabled legs and feet can be remarkably increased when an emergency occurs.

Description

Technical Field

[0001] This utility model relates to the field of traction connection structure technology, and in particular to a novel flexible traction device for quick connection of multiple wheelchairs. Background Art

[0002] Currently, hospitals and nursing homes have a large number of patients or elderly people with mobility impairments who require wheelchairs. However, in emergencies, such as natural disasters like earthquakes or floods, accidents like fires or electrical malfunctions, or public health emergencies, the limited number of nursing staff means that each staff member can only push one wheelchair at a time. This makes it impossible to quickly transfer multiple people with mobility impairments, severely impacting the speed of such transfers.

[0003] In patent application number CN202321759732.X, entitled "A Connecting Device for Two-Person Wheelchairs," a bending assembly, a front connecting pipe, a rear connecting pipe, a front connecting component connected to the front wheelchair, and a rear connecting component connected to the rear wheelchair are included. The bending assembly includes a first bending member, a second bending member, and a locking structure. The first bending member and the second bending member are rotatably connected, and the locking structure is used to lock the first bending member and the second bending member. The two ends of the front connecting pipe are fixedly connected to the front connecting component and the first bending member, respectively, and the two ends of the rear connecting pipe are fixedly connected to the rear connecting component and the second bending member, respectively. This patent can realize the connection of two-person wheelchairs, but during the connection, it is necessary to fix it with bolt components, which greatly reduces the connection efficiency. In case of emergency in hospitals or nursing centers, it is not possible to quickly transfer the wheelchairs, thus failing to solve the above-mentioned technical problems. Utility Model Content

[0004] The purpose of this invention is to provide a novel flexible traction device for quick connection of multiple wheelchairs, which can quickly connect multiple wheelchairs in series, allowing caregivers to push multiple wheelchairs at once, thereby significantly improving the transfer speed for people with mobility impairments.

[0005] To achieve the above objectives, this utility model provides a novel flexible traction device for quick connection of multiple wheelchairs, comprising:

[0006] First connector for attaching the front wheelchair;

[0007] A second connector for connecting a rear wheelchair; and a third connector for connecting the first connector and the second connector; wherein the first connector includes two opposing first connecting components, one end of which is used to clamp the frame of the wheelchair.

[0008] The second connector includes a wheel connection assembly and a second connection assembly connected to the wheel connection assembly. The wheel connection assembly includes two opposing wheel connection modules and a spacing adjustment module connected between the two wheel connection modules for adjusting the distance between the two wheel connection modules. The wheel connection module includes a fixing rope for connecting to the wheelchair frame, a load-bearing plate, and a plurality of casters disposed at the bottom of the load-bearing plate. The upper surface of the load-bearing plate has locking holes for locking the front wheels of the wheelchair.

[0009] The spacing adjustment module is connected between the two load-bearing plates;

[0010] One end of each of the two second connecting components is hinged to one of the two load-bearing plates;

[0011] The third connector is hinged to the other end of the first connector and the other end of the second connector.

[0012] Furthermore, the first connecting assembly includes a first link and a clamping mechanism located at one end of the first link, the clamping mechanism being used to clamp the frame of the wheelchair; the other ends of the two first links are hinged together by a longitudinally arranged first screw, the first screw being arranged axially perpendicular to the first link, and the first connector being hinged to the first screw.

[0013] Furthermore, the second connecting assembly includes two opposing second connecting rods, one end of which is hinged to the wheel connecting assembly; the other ends of the two second connecting rods are hinged together by a longitudinally arranged second screw, which is axially perpendicular to the second connecting rods; the two second connecting rods are respectively hinged to the two load-bearing plates; and the first connecting member is hinged to the second screw.

[0014] Furthermore, the clamping mechanism includes a gripper and a third screw. One end of the third screw is connected to the gripper, and the other end is radially movably inserted into the first connecting rod. The third screw can rotate axially within the first connecting rod.

[0015] Furthermore, the gripper includes two jaws hinged together at one end, and an adjusting screw for adjusting the size of the opening of the two jaws is screwed between the two jaws.

[0016] One end of the third screw is fixedly connected to one of the grippers.

[0017] Furthermore, the spacing adjustment module includes two adjustable tensioners arranged side by side, with both ends of the adjustable tensioners fixedly connected to the load-bearing plate.

[0018] Furthermore, one end of the fixing rope is connected to the load-bearing plate via a hook, and the other end is connected to the middle of one of the adjustable tensioners via a hook.

[0019] Furthermore, the third connecting member includes a third connecting rod and rod end joint bearings connected to both ends of the third connecting rod. The third connecting rod is hinged to the first screw and the second screw respectively through the rod end joint bearings at both ends.

[0020] The beneficial effects of this utility model are reflected in:

[0021] The multi-wheelchair quick-connect flexible traction device provided by this utility model can quickly connect multiple wheelchairs in sequence. Only two caregivers are needed to push the connected wheelchairs at the same time. In case of emergency, it can significantly improve the transfer speed of people with mobility impairments. Attached Figure Description

[0022] Figure 1 A schematic diagram of the structure of a novel flexible traction device for quick connection of multiple wheelchairs provided in this embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the first connector provided in an embodiment of the present utility model;

[0024] Figure 3 This is a schematic diagram of the clamping mechanism provided in an embodiment of the present utility model;

[0025] Figure 4 Schematic diagram of the structure of the second connector provided in the embodiment of this utility model Figure 1 ;

[0026] Figure 5 Schematic diagram of the structure of the second connector provided in the embodiment of this utility model Figure 2 ;

[0027] Figure 6 Schematic diagram of the wheel connection assembly provided in the embodiment of this utility model Figure 1 ;

[0028] Figure 7 Schematic diagram of the wheel connection assembly provided in the embodiment of this utility model Figure 2 ;

[0029] Figure 8 This is a structural schematic diagram of the load-bearing plate provided in an embodiment of the present utility model;

[0030] Figure 9 This is a schematic diagram of the structure of the second connecting component provided in an embodiment of the present utility model;

[0031] Figure 10This is a schematic diagram of the structure of the third connector provided in an embodiment of the present utility model;

[0032] Figure 11 A schematic diagram illustrating the usage state of the multi-wheelchair quick-connect flexible traction device provided in this embodiment of the utility model. Figure 1 ;

[0033] Figure 12 A schematic diagram illustrating the usage state of the multi-wheelchair quick-connect flexible traction device provided in this embodiment of the utility model. Figure 2 .

[0034] The components include: first connecting member 1, second connecting member 2, third connecting member 3, fixing rope 4, first connecting rod 5, clamping mechanism 6, first screw 7, wheel connecting assembly 8, second connecting rod 9, second screw 10, third screw 11, gripper 12, adjusting screw 13, load-bearing plate 14, caster wheel 15, locking hole 16, guide groove 17, guide opening 18, adjustable tensioner 19, hook 20, third connecting rod 21, rod end joint bearing 22, connecting shaft 23, buffer block 24, arc surface 25, mounting hole 26, and protrusion 27. DETAILED DESCRIPTION

[0035] The specific embodiments of this utility model will be described in more detail below with reference to the schematic diagrams. The advantages and features of this utility model will become clearer from the following description. It should be noted that the accompanying drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.

[0036] like Figure 1 As shown in the figure, this utility model provides a novel flexible traction device for quickly connecting multiple wheelchairs. This device is used to quickly connect multiple wheelchairs sequentially. After multiple wheelchairs are connected, only one caregiver needs to pull the first wheelchair from the front, and another caregiver needs to push the last wheelchair from the rear to move all the connected wheelchairs. In emergencies, this significantly improves the speed of transporting people with mobility impairments. The structure of the device when connecting two wheelchairs is as follows. Figure 11 and Figure 12 As shown.

[0037] Among them, such as Figure 2 , Figure 6 and Figure 7 As shown, the first connector 1 includes two first connecting components arranged opposite to each other. One end of the first connecting component is used to clamp the frame of the wheelchair, so that the frame of the front wheelchair can be clamped through the first connecting component.

[0038] The second connector 2 includes a wheel connection assembly 8 and a second connection assembly connected to the wheel connection assembly 8. The wheel connection assembly 8 includes two opposing wheel connection modules and a spacing adjustment module connected between the two wheel connection modules for adjusting the distance between the two wheel connection modules. The wheel connection module includes a fixing rope 4 for connecting to the wheelchair frame, a load-bearing plate 14, and a plurality of casters 15 disposed at the bottom of the load-bearing plate 14. The upper surface of the load-bearing plate 14 has locking holes 16 for locking the front wheels of the wheelchair.

[0039] The spacing adjustment module is connected between the two load-bearing plates 14;

[0040] One end of each of the two second connecting components is hinged to one of the two load-bearing plates 14;

[0041] The third connector 3 is hinged to the other end of the first connector and the other end of the second connector.

[0042] In this embodiment, as Figure 8 As shown, the locking hole 16 has a rectangular structure. The length of the locking hole 16 is smaller than the diameter of the front wheel of the wheelchair, and the width of the locking hole 16 is slightly larger than the width of the front wheel of the wheelchair, so that the front wheel of the wheelchair can be locked in the locking hole 16. In order to reduce the deformation of the front wheel of the wheelchair after being locked in the locking hole 16, both ends of the locking hole 16 have arc surfaces 25, and the wheel surface of the front wheel of the wheelchair fits against the arc surfaces 25.

[0043] Once the front wheels of the rear wheelchair are engaged in the locking holes 16, the front wheels of the rear wheelchair lift off the ground, and the casters 15 at the bottom of the load-bearing plate 14 contact the ground and move via the casters 15. In this embodiment, the casters 15 are ball-type casters. By using ball-type casters instead of the front wheels of the rear wheelchair, the load-bearing plate 14 is pulled by the second link 9, and the ball-type casters can adapt to movement in different directions.

[0044] To facilitate the quick insertion of the front wheels of the rear wheelchair into the locking holes 16, a guide groove 17 is provided at one end of the locking holes 16, with the end of the guide groove 17 away from the second screw 10 being open. To facilitate the rapid entry of the front wheels into the guide groove 17, a trapezoidal guide opening 18 is provided at the entrance end of the guide groove 17. The width of the guide opening 18 near the locking holes 16 is smaller than the width of the end away from the locking holes 16, and the bottom surface of the guide opening 18 is an inclined surface, with the end of the inclined surface near the locking holes 16 being higher than the end away from the locking holes 16.

[0045] Among them, such as Figure 2As shown, the first connecting assembly includes a first connecting rod 5 and a clamping mechanism 6 located at one end of the first connecting rod 5. The clamping mechanism 6 is used to clamp the frame of the wheelchair. The other ends of the two first connecting rods 5 are hinged together by a first screw 7 arranged longitudinally. The first screw 7 is arranged axially perpendicular to the first connecting rod 5. The third connecting member 3 is hinged to the first screw 7.

[0046] The other ends of the two first connecting rods 5 are hinged together by a longitudinally arranged first screw 7, which facilitates the adjustment of the opening angle between the two first connecting rods 5, thereby adapting to the connection requirements of wheelchairs of different widths.

[0047] The clamping mechanism 6 is used to clamp and secure the frame of the front wheelchair. Specifically, as shown... Figure 3 As shown, the clamping mechanism 6 includes a gripper and a third screw 11. One end of the third screw 11 is connected to the gripper, and the other end is radially movably inserted into the first connecting rod 5. The third screw 11 can rotate axially around the first connecting rod 5 within the first connecting rod 5, thereby allowing the tilt angle of the first connecting rod 5 to be adjusted during actual installation.

[0048] The gripper includes two jaws 12 hinged together at one end, and an adjusting screw 13 for adjusting the opening size of the two jaws 12 is screwed between them. One end of a third screw 11 is fixedly connected to one of the jaws 12.

[0049] In practice, a connecting shaft 23 is rotatably mounted in the middle of each of the two grippers 12. An adjusting screw 13 passes radially through the two connecting shafts 23 and is threadedly connected to them. By turning the adjusting screw 13, the opening size between the two grippers 12 can be adjusted to firmly grip frames of different diameters.

[0050] like Figure 4 and Figure 5 As shown, the second connecting assembly includes two opposing second connecting rods 9, one end of which is hinged to the wheel connecting assembly 8; the other ends of the two second connecting rods 9 are hinged to each other by a longitudinally arranged second screw 10, which is axially perpendicular to the second connecting rods 9; the two second connecting rods 9 are respectively hinged to two load-bearing plates 14; and the third connecting piece 3 is hinged to the second screw 10.

[0051] Furthermore, the spacing adjustment module is connected between the two load-bearing plates 14. By adjusting the spacing between the two load-bearing plates 14, it can accommodate different front wheel distances of wheelchairs. In this embodiment, as shown... Figure 6As shown, the spacing adjustment module includes two adjustable tensioners 19 arranged side by side. The two ends of the adjustable tensioners 19 are fixedly connected to the load-bearing plate 14 by bolts. The load-bearing plate 14 has mounting holes 26. The outline of the mounting holes 26 is approximately matched with the outline of the end of the adjustable tensioners 19, which can limit the degree of freedom when the adjustable tensioners 19 are engaged with the load-bearing plate 14, making the connection between the adjustable tensioners 19 and the load-bearing plate 14 more stable.

[0052] In this embodiment, as Figure 6 and Figure 7 As shown, one end of the fixing rope 4 is connected to the load-bearing plate 14 via a hook 20, and the other end is connected to the middle of one of the adjustable tensioners 19 via a hook 20. A lifting lug is attached to the side wall of the load-bearing plate 14, and the hook 20 is attached to the lifting lug. During installation, the fixing rope 4 is wound around the frame of the rear wheelchair, thereby ensuring that the front wheels of the rear wheelchair are firmly controlled within the locking holes 16.

[0053] And, as Figure 8 As shown, the end of the load-bearing plate 14 furthest from the spacing adjustment module has a protruding portion 27 extending outward. The protruding portion 27 is used for stepping on when installing the front wheel, so as to straighten the load-bearing plate 14, which was originally tilted to make it easier for the front wheel to enter.

[0054] The two second connecting rods 9 are respectively hinged to the two load-bearing plates 14. In this embodiment, as shown... Figure 9 As shown, the second link 9 is hinged to the load-bearing plate 14 through two series-connected rod end joint bearings 22, or a universal joint can be used to achieve the same hinge, so that the load-bearing plate 14 and the second link 9 can achieve a certain relative rotation and be flexibly connected.

[0055] The third connecting piece 3 is hinged to both the first screw 7 and the second screw 10. Specifically, as shown... Figure 10 As shown, the third connecting member 3 includes a third connecting rod 21 and rod end joint bearings 22 connected to both ends of the third connecting rod 21. The third connecting rod 21 is hinged to the first screw 7 and the second screw 10 respectively through the rod end joint bearings 22 at both ends, so that the first connecting member 1 and the second connecting member 2 can rotate relative to each other and swing up and down to adapt to different motion states.

[0056] At the same time, such as Figure 1 , Figure 2 , Figure 4 and Figure 9 As shown, buffer blocks 24 can be provided between the rod end spherical bearing 22 and the first connecting rod 5 and the second connecting rod 9, between the two first connecting rods 5, and between the two second connecting rods 9. These buffer blocks can effectively reduce friction between components and extend the service life of the components. The buffer blocks 24 are sleeved on the first screw 7 and the second screw 10, and the buffer blocks 24 can be made of rubber.

[0057] In summary, the multi-wheelchair quick-connect flexible traction device provided in this embodiment can quickly connect multiple wheelchairs in series. Only two caregivers are needed to push the connected wheelchairs simultaneously, which can significantly improve the transfer speed for people with mobility impairments in emergency situations.

[0058] The above are merely preferred embodiments of this utility model and do not constitute any limitation on this utility model. Any equivalent substitutions or modifications made by those skilled in the art to the technical solutions and contents disclosed in this utility model without departing from the scope of the technical solutions of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A novel flexible traction device for rapid connection of multiple wheelchairs, characterized in that, include: First connector (1) for connecting the front wheelchair; A second connector (2) for connecting the rear wheelchair; and, A third connector (3) for connecting the first connector (1) and the second connector (2); wherein, The first connector (1) includes two opposing first connecting components, one end of which is used to clamp the frame of the wheelchair; The second connector (2) includes a wheel connecting assembly (8) and a second connecting assembly connected to the wheel connecting assembly (8). The wheel connecting assembly (8) includes two opposing wheel connecting modules and a spacing adjustment module connected between the two wheel connecting modules for adjusting the distance between the two wheel connecting modules; wherein, The wheel connection module includes a fixing rope (4) for connecting to the wheelchair frame, a load-bearing plate (14) and multiple casters (15) set at the bottom of the load-bearing plate (14). The upper surface of the load-bearing plate (14) has locking holes (16) for locking the front wheels of the wheelchair. The spacing adjustment module is connected between the two load-bearing plates (14); One end of each of the two second connecting components is hinged to one of the two load-bearing plates (14); The third connector (3) is hinged to the other end of the first connector and the other end of the second connector.

2. The novel multi-wheelchair quick-connect flexible traction device as described in claim 1, characterized in that, The first connecting assembly includes a first connecting rod (5) and a clamping mechanism (6) located at one end of the first connecting rod (5), the clamping mechanism (6) being used to clamp the frame of the wheelchair; the other ends of the two first connecting rods (5) are hinged together by a longitudinally arranged first screw (7), the first screw (7) being axially perpendicular to the first connecting rod (5), and the third connecting member (3) being hinged to the first screw (7).

3. The novel multi-wheelchair quick-connect flexible traction device as described in claim 2, characterized in that, The second connecting assembly includes two opposing second connecting rods (9), one end of which is hinged to the wheel connecting assembly (8); the other ends of the two second connecting rods (9) are hinged to each other by a longitudinally arranged second screw (10), which is axially perpendicular to the second connecting rods (9); the two second connecting rods (9) are respectively hinged to the two load-bearing plates (14); and the third connecting member (3) is hinged to the second screw (10).

4. The novel multi-wheelchair quick-connect flexible traction device as described in claim 3, characterized in that, The clamping mechanism (6) includes a gripper and a third screw (11). One end of the third screw (11) is connected to the gripper, and the other end is radially movably inserted into the first connecting rod (5). The third screw (11) can rotate axially around the third screw (11) within the first connecting rod (5).

5. A novel multi-wheelchair quick-connect flexible traction device as described in claim 4, characterized in that, The gripper includes two jaws (12) hinged together at one end, and an adjusting screw (13) for adjusting the opening size of the two jaws (12) is screwed between the two jaws (12); One end of the third screw (11) is fixedly connected to one of the grippers (12).

6. The novel multi-wheelchair quick-connect flexible traction device as described in claim 5, characterized in that, The spacing adjustment module includes two adjustable tensioners (19) arranged side by side, and the two ends of the adjustable tensioners (19) are fixedly connected to the load-bearing plate (14).

7. A novel multi-wheelchair quick-connect flexible traction device as described in claim 6, characterized in that, One end of the fixed rope (4) is connected to the load-bearing plate (14) via a hook (20), and the other end is connected to the middle of one of the adjustable tensioners (19) via a hook (20).

8. A novel multi-wheelchair quick-connect flexible traction device as described in claim 7, characterized in that, The third connector (3) includes a third link (21) and rod end bearings (22) connected to both ends of the third link (21). The third link (21) is hinged to the first screw (7) and the second screw (10) respectively through the rod end bearings (22) at both ends.

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