A vibration damping assembly for connecting a frame of a four-wheeled vehicle to a wheel

Abstract

This utility model relates to the field of anti-vibration technology for four-wheeled vehicles used in medical rehabilitation equipment, specifically to an anti-vibration component for connecting the frame and wheels of a four-wheeled vehicle. The component includes a frame connecting rod, a plastic connector, a wheel fork, and a wheel body. The plastic connector is located directly above the wheel fork. A connecting component is provided between the plastic connector and the wheel fork, and an anti-vibration component is located on the outside of the connecting component. This anti-vibration component for connecting the frame and wheels of the four-wheeled vehicle uses a combination of bearing one and bearing two, a shock-absorbing washer, and a flat washer to allow the double-ended screw to rotate smoothly, thereby achieving the purpose of smoothly steering the wheel. This effectively reduces the vibration caused to the frame connecting rod and the four-wheeled vehicle body during wheel steering and driving, improving the safety of the four-wheeled vehicle during propulsion. Bearing two, in close cooperation with an electroplated iron part, provides the frictional force required for steering of the double-ended screw during wheel steering, helping the wheel to turn smoothly.

Description

Technical Field

[0001] This utility model relates to the field of anti-shake technology for four-wheeled vehicles used in medical rehabilitation equipment, specifically to an anti-shake component for connecting the frame and wheels of a four-wheeled vehicle. Background Technology

[0002] Four-wheeled vehicles, also known as wheeled walking aids in medical rehabilitation, are assistive devices that help people with mobility impairments regain their ability to walk. They allow users to easily push and control the vehicle, reducing physical strain. The wheels at the bottom of the four-wheeled vehicle are one of its core functional components, serving not only to facilitate movement but also to ensure rehabilitation safety, functional adaptability, and ergonomic fit.

[0003] The connection between the existing four-wheeled vehicle frame and its wheels is usually achieved using a simple connector, screw, nut, and a single shock-absorbing pad. In use, the screw passes through the connector at the four-wheeled vehicle frame and the connector at the wheel, then the shock-absorbing pad is fitted over the outside of the screw and tightened with a nut.

[0004] During use, the screw in the aforementioned installation structure continuously rubs against the inner wall of the connector, transmitting the vibration force from the wheel connector to the four-wheeled vehicle frame. This causes vibration in the four-wheeled vehicle frame during operation, resulting in significant discomfort for the operator. Furthermore, because the screw rotates in direct contact with the inner wall of the connector, the friction between the screw and the inner wall hinders wheel rotation and can even cause the wheel to become stuck, making steering difficult. Utility Model Content

[0005] To address the aforementioned issues, a vibration damping component is provided for connecting the frame and wheels of a four-wheeled vehicle. This component utilizes bearings one and two, along with a damping washer and a flat washer, to allow the double-ended screw to rotate smoothly. This, in turn, enables the wheels to steer smoothly, effectively reducing vibrations to the frame connecting rod and the four-wheeled vehicle body during steering and driving, thus improving safety during vehicle propulsion. Bearing two, in close cooperation with an electroplated iron component, provides the necessary friction for the double-ended screw during wheel steering, facilitating smooth wheel steering.

[0006] To address the existing technical problems, this utility model provides a vibration damping component for connecting the frame and wheels of a four-wheeled vehicle, including a frame connecting rod, a plastic connector, a wheel fork, and a wheel body, wherein the plastic connector is located directly above the wheel fork;

[0007] A connecting component is provided between the plastic connector and the wheel fork. An anti-shake component is provided on the outside of the connecting component. The plastic connector and the wheel fork are respectively provided with a mounting groove and a through hole that cooperate with the connecting component.

[0008] The anti-shake component includes a bearing 1 and a bearing 2, which are horizontally sleeved on the outside of the connecting component from top to bottom. An electroplated iron part is sleeved on the outside of the bearing 2. The inner walls of the bearing 1 and the bearing 2 are in close contact with the connecting component, and the outer wall of the bearing 2 is in close contact with the inner wall of the electroplated iron part.

[0009] The bearing one is in close contact with the outer wall of the electroplated iron part and the inner wall of the mounting groove. The bearing one and bearing two are respectively located on the outside of the connecting assembly near its two ends.

[0010] A sleeve is also provided between bearing one and bearing two;

[0011] The bottom of the electroplated iron part is equipped with a shock-absorbing washer;

[0012] A planar washer is provided between the connecting component and the wheel fork.

[0013] Preferably, the sleeve is also sleeved on the outside of the connecting assembly, and the two ends of the sleeve are in contact with the surfaces of bearing one and electroplated iron parts, respectively. The connecting assembly includes a double-ended screw that is vertically arranged in the mounting groove and through hole. Bearing one, bearing two, sleeve, shock absorber and flat washer are all sleeved on the outside of the double-ended screw.

[0014] Preferably, both ends of the double-ended screw are connected to nuts, and the nut at the top of the double-ended screw is located directly above the bearing and in the mounting groove.

[0015] Preferably, the portion of the double-ended screw located at the bottom of the electroplated iron part and above the wheel fork extends laterally to form a cylindrical abutment plate. The upper and lower surfaces of the shock-absorbing washer contact the bottom of the electroplated iron part and the top of the abutment plate, respectively, and the lower surface of the abutment plate contacts the top of the wheel fork.

[0016] Preferably, the nut at the bottom of the double-ended screw is located directly below the through hole, and the flat washer is located between the nut and the inner bottom surface of the wheel fork, with both sides of the flat washer in close contact with the upper surface of the nut and the inner bottom surface of the wheel fork, respectively.

[0017] Preferably, the top of the double-ended screw is also provided with a nut cap, which is fastened to the top of the mounting groove.

[0018] Preferably, the plastic connector is sleeved on the outside of the frame connecting rod and is fixedly connected to the frame connecting rod by fastening bolts, and the bottom of the wheel fork is rotatably connected to the wheel body by bearings.

[0019] The advantages of this utility model compared to the prior art are:

[0020] 1. By using bearing one and bearing two in combination with shock absorber and flat washer, the double-ended screw can rotate smoothly, thereby achieving the purpose of smoothly steering the wheel. This effectively reduces the vibration of the frame connecting rod and the four-wheel vehicle body during wheel steering and driving, and improves the safety of the four-wheel vehicle during propulsion.

[0021] 2. The bearing 2 fits tightly with the electroplated iron part, which can provide the friction required for the double-ended screw during the wheel steering process, helping the wheel to turn smoothly. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of a frame connecting rod and wheel connection for a shock-absorbing component used to connect the frame and wheels of a four-wheeled vehicle.

[0023] Figure 2 This is a schematic diagram of the three-dimensional cross-sectional structure of a plastic connector used to connect the frame and wheels of a four-wheeled vehicle for vibration damping.

[0024] Figure 3 This is a schematic diagram of the three-dimensional cross-sectional structure of a shock-absorbing component used to connect the frame and wheels of a four-wheeled vehicle.

[0025] Figure 4 This is an exploded view of a sway-damping assembly used to connect the frame and wheels of a four-wheeled vehicle.

[0026] Figure 5 This is a schematic diagram of a bearing two-dimensional structure for a vibration damping assembly used to connect the frame and wheels of a four-wheeled vehicle.

[0027] The following components are labeled in the diagram: 1. Frame connecting rod; 2. Plastic connector; 3. Wheel fork; 4. Wheel body; 5. Connecting assembly; 5a. Double-ended screw; 5a1. Nut; 5a2. Abutment plate; 5b. Nut cap; 6. Anti-shake assembly; 6a. Bearing 1; 6b. Bearing 2; 6c. Electroplated iron part; 6d. Sleeve; 6f. Shock absorber washer; 7. Flat washer. Detailed Implementation

[0028] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0029] See Figure 1 and Figure 2 As shown, a vibration damping assembly for connecting the frame and wheels of a four-wheeled vehicle includes a frame connecting rod 1, a plastic connector 2, a wheel fork 3, and a wheel body 4, wherein the plastic connector 2 is located directly above the wheel fork 3.

[0030] The plastic connector 2 is sleeved on the outside of the frame connecting rod 1 and is fixedly connected to the frame connecting rod 1 by fastening bolts. The bottom of the wheel fork 3 is rotatably connected to the wheel body 4 by bearings.

[0031] It should be noted that the frame connecting rod 1 is a component that connects the wheel body 4 to the four-wheeled vehicle body.

[0032] During installation, the plastic connector 2 is fitted onto the frame connecting rod 1, and the positions of the plastic connector 2 and the frame connecting rod 1 are fixed by fastening bolts. At the same time, the wheel fork 3 is rotated to connect with the wheel body 4.

[0033] See Figure 2 - Figure 4 As shown, a connecting component 5 is provided between the plastic connector 2 and the wheel fork 3, and an anti-shake component 6 is provided on the outside of the connecting component 5. The plastic connector 2 and the wheel fork 3 are respectively provided with a vertical mounting groove and a through hole that cooperate with the connecting component 5.

[0034] It should be noted that during use, the wheel fork 3 and the plastic connector 2 are rotated together via the connecting component 5.

[0035] At this time, under the action of the connecting component 5, the wheel body 4 can smoothly perform steering work. Under the action of the anti-vibration component 6, the vibration during the steering process will be significantly reduced or even eliminated, so as to achieve the purpose of making the four-wheeled vehicle drive smoothly and turn smoothly.

[0036] See Figure 3 and Figure 5 As shown, the anti-shake component 6 includes a first bearing 6a and a second bearing 6b horizontally sleeved on the outside of the connecting component 5 from top to bottom. An electroplated iron part 6c is sleeved on the outside of the second bearing 6b. The inner walls of the first bearing 6a and the second bearing 6b are in close contact with the connecting component 5, and the outer wall of the second bearing 6b is in close contact with the inner wall of the electroplated iron part 6c.

[0037] It should be noted that the use of bearing 6a and bearing 6b in combination enables the connecting assembly 5 to drive the wheel body 4 to rotate smoothly, effectively reducing the vibration of the wheel body 4 to the frame connecting rod 1 and the four-wheeled vehicle body during steering and driving, and improving the safety of the four-wheeled vehicle during propulsion.

[0038] Meanwhile, bearing 6b and electroplated iron part 6c fit tightly together, providing the friction required for steering of the double-ended screw 5a during the steering process of wheel body 4, thus helping wheel body 4 to turn smoothly. Furthermore, bearing 6b is an Igus bearing.

[0039] See Figure 3As shown, the outer walls of the bearing 6a and the electroplated iron part 6c are tightly fitted to the inner wall of the mounting groove, and the bearing 6a and the bearing 6b are located on the outside of the connecting assembly near its two ends.

[0040] It should be noted that the connecting component 5 is tightly connected to the plastic connector 2 through the anti-shake component 6, which reduces the gap between the connecting component 5 and the plastic connector 2, thereby effectively preventing the wheel body 4 from shaking and the frame connecting rod 1 from shaking when the connecting component 5 is working.

[0041] See Figure 3 As shown, a sleeve 6d is also provided between the bearing 6a and the bearing 6b;

[0042] The bottom of the electroplated iron part 6c is provided with a shock-absorbing washer 6f;

[0043] A planar washer 7 is provided between the connecting component 5 and the wheel fork 3.

[0044] It should be noted that the sleeve 6d provides support for bearing 6a and bearing 6b and comes into contact with the connecting assembly 5 during use. Together with the shock absorber 6f and the flat washer 7, it absorbs the vibration force generated by the connecting assembly 5 and the wheel body 4 during use, further improving the buffering effect and the stability of the four-wheeled vehicle during operation.

[0045] See Figure 3 As shown, the sleeve 6d is also sleeved on the outside of the connecting assembly 5, and the two ends of the sleeve 6d are in contact with the surfaces of the bearing 6a and the electroplated iron part 6c, respectively. The connecting assembly 5 includes a double-ended screw 5a that is vertically arranged in the mounting groove and through hole. The bearing 6a, bearing 6b, sleeve 6d, shock absorber 6f and flat washer 7 are all sleeved on the outside of the double-ended screw 5a.

[0046] It should be noted that the double-ended screw 5a is the main component connecting the plastic connector 2 and the wheel fork 3.

[0047] See Figure 3 As shown, both ends of the double-ended screw 5a are connected to nuts 5a1. The nut 5a1 at the top of the double-ended screw 5a is located directly above the bearing 6a and in the mounting groove.

[0048] The portion of the double-headed screw 5a located at the bottom of the electroplated iron part 6c and above the wheel fork 3 extends laterally to form a cylindrical abutment plate 5a2. The upper and lower surfaces of the shock-absorbing washer 6f contact the bottom of the electroplated iron part 6c and the top of the abutment plate 5a2, respectively, and the lower surface of the abutment plate 5a2 contacts the top of the wheel fork 3.

[0049] It should be noted that the double-ended screw 5a and the nut 5a1 work together to complete the rotational connection between the plastic connector 2 and the wheel fork 3.

[0050] The abutment plate 5a2 is designed to prevent the shock absorber 6f from directly contacting the top of the wheel fork 3, effectively reducing the friction force when the wheel fork 3 rotates, and at the same time facilitating the shock absorber 6f to smoothly absorb the vibration force when the double-headed screw 5a and the electroplated iron part 6c interact.

[0051] See Figure 2 and Figure 3 As shown, the nut 5a1 at the bottom of the double-ended screw 5a is located directly below the through hole, and the flat washer 7 is located between the nut 5a1 and the inner bottom surface of the wheel fork 3, with both sides of the flat washer 7 in close contact with the upper surface of the nut 5a1 and the inner bottom surface of the wheel fork 3, respectively.

[0052] It should be noted that the flat washer 7 can absorb the vibration force on the wheel fork 3 when the wheel body 4 at the bottom of the double-ended screw 5a rotates, and provide friction and buffer force for the nut 5a1 at the bottom of the double-ended screw 5a to prevent it from rotating.

[0053] See Figure 2 As shown, the top of the double-ended screw 5a is also provided with a nut cover 5b, which is fastened to the top of the mounting groove.

[0054] It should be noted that the nut cap 5b is used to cover the mounting groove, thereby protecting the components inside the mounting groove, and also contributing to the aesthetic appearance of the connected components after installation.

[0055] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A sway-damping assembly for connecting a four-wheeled vehicle frame and wheels, comprising a frame connecting rod (1), a plastic connector (2), a wheel fork (3), and a wheel body (4), characterized in that, The plastic connector (2) is located directly above the wheel fork (3); A connecting component (5) is provided between the plastic connector (2) and the wheel fork (3). An anti-shake component (6) is provided on the outside of the connecting component (5). The plastic connector (2) and the wheel fork (3) are respectively provided with a mounting groove and a through hole that cooperate with the connecting component (5). The anti-shake component (6) includes a bearing 1 (6a) and a bearing 2 (6b) horizontally sleeved on the outside of the connecting component (5) from top to bottom. An electroplated iron part (6c) is sleeved on the outside of the bearing 2 (6b). The inner walls of the bearing 1 (6a) and the bearing 2 (6b) are in close contact with the connecting component (5), and the outer wall of the bearing 2 (6b) is in close contact with the inner wall of the electroplated iron part (6c). The outer wall of the bearing one (6a) and the electroplated iron part (6c) are closely fitted with the inner wall of the mounting groove. The bearing one (6a) and the bearing two (6b) are located on the outside of the connecting assembly near its two ends. A sleeve (6d) is also provided between the bearing one (6a) and the bearing two (6b); The bottom of the electroplated iron part (6c) is provided with a shock-absorbing washer (6f); A planar washer (7) is provided between the connecting component (5) and the wheel fork (3).

2. A sway-damping assembly for connecting a four-wheeled vehicle frame and wheels according to claim 1, characterized in that, The sleeve (6d) is also sleeved on the outside of the connecting assembly (5), and the two ends of the sleeve (6d) are in contact with the surfaces of bearing one (6a) and electroplated iron part (6c) respectively. The connecting assembly (5) includes a double-ended screw (5a) vertically arranged in the mounting groove and through hole. Bearing one (6a), bearing two (6b), sleeve (6d), shock absorber (6f) and flat washer (7) are all sleeved on the outside of the double-ended screw (5a).

3. A sway-damping assembly for connecting a four-wheeled vehicle frame and wheels according to claim 2, characterized in that, Both ends of the double-ended screw (5a) are connected to nuts (5a1), and the nut (5a1) at the top of the double-ended screw (5a) is located directly above the bearing (6a) and in the mounting groove.

4. A sway-damping assembly for connecting a four-wheeled vehicle frame and wheels according to claim 3, characterized in that, The portion of the double-headed screw (5a) located at the bottom of the electroplated iron part (6c) and above the wheel fork (3) extends laterally to form a cylindrical abutment plate (5a2). The upper and lower surfaces of the shock-absorbing washer (6f) contact the bottom of the electroplated iron part (6c) and the top of the abutment plate (5a2) respectively, and the lower surface of the abutment plate (5a2) contacts the top of the wheel fork (3).

5. A sway-damping assembly for connecting a four-wheeled vehicle frame and wheels according to claim 4, characterized in that, The nut (5a1) at the bottom of the double-ended screw (5a) is located directly below the through hole. The flat washer (7) is located between the nut (5a1) and the inner bottom surface of the wheel fork (3), and the two sides of the flat washer (7) are respectively in close contact with the upper surface of the nut (5a1) and the inner bottom surface of the wheel fork (3).

6. A sway-damping assembly for connecting a four-wheeled vehicle frame and wheels according to claim 5, characterized in that, The top of the double-ended screw (5a) is also provided with a nut cap (5b), which is fastened to the top of the mounting groove.

7. A sway-damping assembly for connecting a four-wheeled vehicle frame and wheels according to claim 5, characterized in that, The plastic connector (2) is sleeved on the outside of the frame connecting rod (1) and the plastic connector (2) is fixedly connected to the frame connecting rod (1) by fastening bolts. The bottom of the wheel fork (3) is rotatably connected to the wheel body (4) by bearing.

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