Damping device and scooter

Abstract

The utility model relates to a kind of shock absorber and scooter, the shock absorber includes: damper and air spring assembly, the damper includes cylinder and piston rod, the first end of the piston rod is slidably fitted in the cylinder, the air spring assembly includes air bag and end cap component, the piston rod is set in the air bag, the first end of the air bag is connected with the cylinder, the end cap component is located at the second end of the air bag, and is connected with the second end of the piston rod, when the shock absorber is pressed, the cylinder can be moved towards the direction of the end cap component, and extrude the air bag.The utility model relates to the structure design of shock absorber is simple, the number of required parts is less, and manufacturing cost is lower.

Description

Technical Field

[0001] This utility model relates to the field of mobility scooter technology, specifically to a shock absorption device and a mobility scooter. Background Technology

[0002] When mobility scooters such as electric bikes and motorcycles travel on uneven roads, the vehicle body is prone to vibration, resulting in a poor riding experience for the user. In related technologies, mobility scooters typically have shock-absorbing devices installed at the rear fork. This shock-absorbing structure can deform upon impact to cushion the shock. However, the shock-absorbing devices in these technologies have complex structural designs, require a large number of parts, and have high manufacturing costs. Utility Model Content

[0003] This utility model aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of this utility model propose a shock-absorbing device with a simple structural design, fewer required parts, and lower manufacturing cost.

[0005] An embodiment of this utility model also proposes a mobility scooter.

[0006] The shock-absorbing device of this utility model includes: a damper, the damper including a cylinder and a piston rod, the first end of the piston rod being slidably fitted into the cylinder; and an air spring assembly, the air spring assembly including an air bladder and an end cap component, the piston rod passing through the air bladder, the first end of the air bladder being connected to the cylinder, the end cap component being disposed at the second end of the air bladder and connected to the second end of the piston rod. When the shock-absorbing device is compressed, the cylinder can move toward the end cap component and compress the air bladder.

[0007] According to an embodiment of the present invention, the piston rod of the shock-absorbing device can slide relative to the cylinder body, providing damping force to the shock-absorbing device. When the shock-absorbing device is compressed, the cylinder body can move towards the end cap component and compress the airbag, thereby providing cushioning and shock absorption for the scooter. Since the first end of the airbag is connected to the cylinder body, and the end cap component is located at the second end of the airbag and connected to the second end of the piston rod, the structural design and assembly of the shock-absorbing device are simple, requiring fewer parts and thus reducing manufacturing costs.

[0008] Optionally, the end cap component includes an end cap and an ear seat, at least one of the end cap and the piston rod being connected to the ear seat, the ear seat being used to connect to the vehicle frame, and the second end of the airbag being connected to the end cap.

[0009] Optionally, the end cap is provided with a through hole, the piston rod passes through the through hole, and the end cap component further includes a sealing element, which is disposed between the outer peripheral wall of the piston rod and the inner peripheral wall of the through hole.

[0010] Optionally, the lug is provided with a threaded hole, the second end of the piston rod is threaded into the threaded hole, and the lug abuts against the end cap.

[0011] Optionally, the ear seat has a mounting hole, and the end cap component further includes a resilient bushing disposed within the mounting hole.

[0012] Optionally, the air spring assembly includes a first pressure ring, and the first end of the airbag and the first pressure ring are both sleeved on the outer peripheral wall of the cylinder body, with the first end of the airbag clamped between the first pressure ring and the outer peripheral wall of the cylinder body.

[0013] Optionally, the air spring assembly includes a second pressure ring, and the second end of the airbag and the second pressure ring are both sleeved on the outer peripheral wall of the end cap, with the second end of the airbag being clamped between the second pressure ring and the outer peripheral wall of the end cap.

[0014] Optionally, the air spring assembly further includes a buffer block disposed within the airbag, the buffer block being connected to the piston rod and arranged close to the end cap component, the buffer block having a lower hardness than the end cap component.

[0015] Optionally, the buffer block is sleeved on the piston rod, and the buffer block is an elastic rubber block.

[0016] Optionally, the shock-absorbing device further includes a protective sleeve, which is fitted over the outside of the airbag and connected to the end cap component.

[0017] Optionally, there is an installation gap between the outer peripheral wall of the airbag and the inner peripheral wall of the protective sleeve.

[0018] Optionally, the cylinder contains hydraulic oil, and the damper further includes an oil seal and a limiting plate. The oil seal is located at one end of the cylinder near the air bladder, the piston rod passes through the oil seal, and the limiting plate is located on the side of the oil seal near the end cap component. The limiting plate is connected to the cylinder.

[0019] Optionally, the shock-absorbing device further includes an air nozzle disposed on the end cap component, the air nozzle being used to inflate the airbag.

[0020] Another embodiment of the mobility scooter of the present invention includes: a shock-absorbing device, wherein the shock-absorbing device is the shock-absorbing device described in any one of the embodiments of the present invention; a frame and a wheel, wherein the wheel is mounted on the frame and the wheel has an axle, the cylinder is connected to the axle, and the end cap component is connected to the frame.

[0021] According to an embodiment of the present invention, the piston rod of the personal mobility vehicle can slide relative to the cylinder body, providing damping force for the shock absorption device. When the shock absorption device is compressed, the cylinder body can move towards the end cap component and compress the airbag, thereby providing cushioning and shock absorption for the personal mobility vehicle. Since the first end of the airbag is connected to the cylinder body, and the end cap component is located at the second end of the airbag and connected to the second end of the piston rod, the structural design and assembly method of the shock absorption device can be simplified, requiring fewer parts and thus reducing manufacturing costs. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the shock absorption device according to an embodiment of the present invention.

[0023] Figure 2 This is an exploded view of the shock absorption device according to an embodiment of the present invention.

[0024] Figure 3 This is a top view of the shock absorption device according to an embodiment of the present invention.

[0025] Figure 4 yes Figure 3 Cross-sectional view of AA.

[0026] Figure 5 yes Figure 4 A magnified view of B in the middle.

[0027] Figure 6 yes Figure 4 A magnified view of C.

[0028] Figure label:

[0029] 1. Damper; 11. Cylinder block; 12. Piston rod; 13. Oil seal; 14. Limit plate;

[0030] 2. Air spring assembly; 21. Airbag; 22. End cap assembly; 221. End cap; 2211. Through hole; 222. Ear seat; 2221. Threaded hole; 2222. Mounting hole; 223. Bushing; 224. Fastening nut; 225. Seal; 23. First pressure ring; 24. Second pressure ring; 25. Buffer block; 26. Protective sleeve;

[0031] 3. Air valve. Detailed Implementation

[0032] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0033] The following is a reference appendix. Figures 1 to 6 This invention describes a shock-absorbing device and a mobility scooter according to embodiments of the present invention.

[0034] like Figures 1 to 6 As shown, the shock-absorbing device of this utility model embodiment includes a damper 1 and an air spring assembly 2. The damper 1 includes a cylinder 11 and a piston rod 12. The first end of the piston rod 12 is slidably fitted inside the cylinder 11. The air spring assembly 2 includes an air bladder 21 and an end cap component 22. The piston rod 12 passes through the air bladder 21. The first end of the air bladder 21 is connected to the cylinder 11. The end cap component 22 is located at the second end of the air bladder 21 and is connected to the second end of the piston rod 12. When the shock-absorbing device is compressed, the cylinder 11 can move toward the end cap component 22 and compress the air bladder 21.

[0035] like Figure 4 As shown, the first end of the piston rod 12 is the lower end of the piston rod 12, and the second end of the piston rod 12 is the upper end of the piston rod 12. The first end of the airbag 21 is the lower end of the airbag 21, and the second end of the airbag 21 is the upper end of the airbag 21.

[0036] Understandably, when the shock absorber causes the airbag 21 to be compressed by the cylinder 11 due to vibration, the air inside the airbag 21 is compressed, and the axial dimension of the airbag 21 along the cylinder 11 decreases. At this time, the overall length of the shock absorber will shorten. When the compression force of the cylinder 11 towards the airbag 21 is eliminated, the airbag 21 can return to its initial position, so that the shock absorber returns to its original size.

[0037] According to the shock-absorbing device of the present invention, the piston rod 12 can slide relative to the cylinder 11, providing damping force to the shock-absorbing device. When the shock-absorbing device is compressed, the cylinder 11 can move towards the end cap component 22 and compress the airbag 21, thereby providing cushioning and shock absorption for the scooter. Since the first end of the airbag 21 is connected to the cylinder 11, and the end cap component 22 is located at the second end of the airbag 21 and connected to the second end of the piston rod 12, the structural design and assembly method of the shock-absorbing device are simple, the number of required parts is small, and manufacturing costs are reduced.

[0038] Optionally, such as Figure 1 , Figure 2 and Figure 5As shown, the end cap component 22 includes an end cap 221 and an ear seat 222. At least one of the end cap 221 and the piston rod 12 is connected to the ear seat 222, which is used to connect to the vehicle frame. The second end of the airbag 21 is connected to the end cap 221. It is understood that the end cap 221 can seal the second end of the airbag 21, thereby forming a closed chamber within the airbag 21. Since the ear seat 222 is connected to at least one of the end cap 221 and the piston rod 12, and the ear seat 222 is used to connect to the vehicle frame, it facilitates the assembly of the shock absorber with the vehicle frame.

[0039] For example, the lug 222 is connected to the piston rod 12, or the lug 222 is connected to the end cap 221. Alternatively, the lug 222 may be connected to both the piston rod 12 and the end cap 221.

[0040] Optionally, such as Figure 5 As shown, the end cap 221 has a through hole 2211, through which the piston rod 12 passes. The end cap component 22 also includes a sealing element 225, which is located between the outer peripheral wall of the piston rod 12 and the inner peripheral wall of the through hole 2211. This prevents gas leakage from the airbag 21 through the mating position of the piston rod 12 and the through hole 2211, thus helping to ensure the stability of the airbag 21 during operation.

[0041] like Figure 5 As shown, the end cap component 22 also includes a fastening nut 224, which cooperates with the piston rod 12 and abuts against the end cap 221 to connect the piston rod 12 and the end cap 221 together.

[0042] Optionally, such as Figure 5 As shown, the ear seat 222 has a threaded hole 2221, and the second end of the piston rod 12 (as shown) Figure 5 The upper end of the piston rod 12 is threaded into the threaded hole 2221, and the lug 222 abuts against the end cap 221. This facilitates the installation and removal of the lug 222, and the connection method of the lug 222 is simple and easy to process.

[0043] Optionally, such as Figure 2 and Figure 4 As shown, the ear mount 222 has a mounting hole 2222, and the end cap component 22 also includes a flexible bushing 223, which is disposed in the mounting hole 2222. Thus, the pin on the frame can pass through the bushing 223 to avoid rigid contact between the frame and the ear mount 222, thereby reducing the probability of abnormal noise occurring at the connection point between the frame and the ear mount 222.

[0044] Optionally, such as Figure 6As shown, the air spring assembly 2 includes a first pressure ring 23. Both the first end of the airbag 21 and the first pressure ring 23 are sleeved on the outer peripheral wall of the cylinder body 11. The first end of the airbag 21 is clamped between the first pressure ring 23 and the outer peripheral wall of the cylinder body 11. It can be understood that the first pressure ring 23 provides a clamping force towards the cylinder body 11 to the first end of the airbag 21, ensuring tight contact between the first end of the airbag 21 and the outer peripheral wall of the cylinder body 11. This prevents gas leakage from the airbag 21 at the contact point between the first end of the airbag 21 and the outer peripheral wall of the cylinder body 11. Furthermore, the connection between the airbag 21 and the cylinder body 11 is simple and easy to manufacture.

[0045] Optionally, such as Figure 5 As shown, the air spring assembly 2 includes a second pressure ring 24. The second end of the airbag 21 and the second pressure ring 24 are both sleeved on the outer peripheral wall of the end cap 221. The second end of the airbag 21 is sandwiched between the second pressure ring 24 and the outer peripheral wall of the end cap 221. It can be understood that the second pressure ring 24 provides a clamping force to the second end of the airbag 21 towards the end cap 221, ensuring tight contact between the second end of the airbag 21 and the outer peripheral wall of the end cap 221. This prevents gas leakage from the airbag 21 at the contact point between the second end of the airbag 21 and the outer peripheral wall of the end cap 221. Furthermore, the connection between the airbag 21 and the end cap 221 is simple and easy to manufacture.

[0046] For example, the airbag 21 has a certain degree of elasticity. For instance, the airbag 21 is made of rubber.

[0047] like Figure 5 As shown, the air spring assembly 2 also includes a buffer block 25, which is located inside the air bladder 21. The buffer block 25 is connected to the piston rod 12 and is arranged close to the end cap component 22. The hardness of the buffer block 25 is less than that of the end cap component 22. Therefore, when the cylinder 11 moves upward to its limit position, the cylinder 11 can abut against the buffer block 25. Since the hardness of the buffer block 25 is less than that of the end cap component 22, it can prevent wear or damage to parts caused by hard contact collision between the cylinder 11 and the end cap component 22, thus helping to extend the service life of the shock absorption device.

[0048] For example, such as Figure 5 As shown, the buffer block 25 is sleeved on the piston rod 12. The buffer block 25 is an elastic rubber block, which can improve the buffering effect of the buffer block 25 and is easy to assemble.

[0049] Optionally, such as Figure 5 and Figure 6 As shown, the shock absorption device also includes a protective sleeve 26, which is fitted over the outside of the airbag 21 and connected to the end cap component 22. The protective sleeve 26 can isolate and protect the airbag 21, thereby reducing the probability of the airbag 21 being damaged by collisions with external obstacles and helping to extend the service life of the airbag 21.

[0050] Optionally, such as Figure 5 As shown, there is an installation gap L between the outer peripheral wall of the airbag 21 and the inner peripheral wall of the protective sleeve 26. When the airbag 21 deforms due to compression, the radial dimension of the airbag 21 will increase. Since there is an installation gap between the outer peripheral wall of the airbag 21 and the inner peripheral wall of the protective sleeve 26, a certain space can be provided for the deformation of the airbag 21, which is beneficial to improving the shock absorption effect of the shock absorption device.

[0051] Optionally, such as Figure 6 As shown, the cylinder body 11 contains hydraulic oil. The damper 1 also includes an oil seal 13 and a limiting plate 14. The oil seal 13 is located at the end of the cylinder body 11 near the air bladder 21. The piston rod 12 passes through the oil seal 13. The limiting plate 14 is located on the side of the oil seal 13 near the end cap component 22 and is connected to the cylinder body 11. It can be understood that the oil seal 13 can prevent the hydraulic oil in the cylinder body 11 from leaking into the air bladder 21. Since the limiting plate 14 is located on the side of the oil seal 13 near the end cap component 22 (i.e., the limiting plate 14 is located at the upper end of the oil seal 13) and is connected to the cylinder body 11, it can axially limit the oil seal 13, which is beneficial to improving the stability of the oil seal 13 after installation.

[0052] For example, the limiting plate 14 and the cylinder body 11 can be connected by threaded connection or riveting.

[0053] like Figure 5 As shown, the shock absorption device also includes an air nozzle 3, which is located on the end cap component 22. The air nozzle 3 is used to inflate the airbag 21, thereby facilitating the inflation of the airbag 21.

[0054] Another embodiment of the personal mobility vehicle of this utility model includes: a shock-absorbing device, a frame, and wheels. The shock-absorbing device is the shock-absorbing device of this utility model. The wheels are mounted on the frame and have axles. A cylinder 11 is connected to the axle, and an end cap component 22 is connected to the frame. It can be understood that the lower end of the cylinder 11 can be directly connected to the axle of the wheel, or it can be connected to the axle of the wheel through a rocker arm.

[0055] According to an embodiment of the present invention, in the personal mobility vehicle, the piston rod 12 can slide relative to the cylinder 11, providing damping force for the shock absorption device. When the shock absorption device is compressed, the cylinder 11 can move towards the end cap component 22 and compress the airbag 21, thereby providing cushioning and shock absorption for the personal mobility vehicle. Since the first end of the airbag 21 is connected to the cylinder 11, and the end cap component 22 is located at the second end of the airbag 21 and connected to the second end of the piston rod 12, the structural design and assembly method of the shock absorption device can be simplified, requiring fewer parts, which helps to reduce manufacturing costs.

[0056] In this example of the invention, the shock absorber is installed on the rear side of the frame, that is, the shock absorber works in conjunction with the rear wheel of the mobility scooter to improve the overall shock absorption effect of the mobility scooter. Exemplarily, the mobility scooter can be an electric vehicle or a motorcycle.

[0057] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0058] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0059] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0060] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0061] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0062] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A shock absorption device, characterized in that, include: The damper (1) includes a cylinder (11) and a piston rod (12), the first end of which is slidably fitted inside the cylinder (11); An air spring assembly (2) includes an air bladder (21) and an end cap component (22). A piston rod (12) passes through the air bladder (21). The first end of the air bladder (21) is connected to the cylinder (11). The end cap component (22) is located at the second end of the air bladder (21) and is connected to the second end of the piston rod (12). When the shock absorber is compressed, the cylinder (11) can move toward the end cap component (22) and squeeze the air bladder (21).

2. The shock absorption device according to claim 1, characterized in that, The end cap component (22) includes an end cap (221) and an ear seat (222), at least one of the end cap (221) and the piston rod (12) being connected to the ear seat (222), the ear seat (222) being used to connect to the vehicle frame, and the second end of the airbag (21) being connected to the end cap (221).

3. The shock absorption device according to claim 2, characterized in that, The end cap (221) is provided with a through hole (2211), the piston rod (12) passes through the through hole (2211), and the end cap component (22) also includes a sealing element (225), which is disposed between the outer peripheral wall of the piston rod (12) and the inner peripheral wall of the through hole (2211); And / or, the ear seat (222) is provided with a threaded hole (2221), the second end of the piston rod (12) is threadedly engaged with the threaded hole (2221), and the ear seat (222) abuts against the end cap (221); And / or, the ear seat (222) is provided with a mounting hole (2222), and the end cap component (22) further includes an elastic bushing (223) disposed in the mounting hole (2222).

4. The shock absorption device according to claim 2, characterized in that, The air spring assembly (2) includes a first pressure ring (23), the first end of the airbag (21) and the first pressure ring (23) are both sleeved on the outer peripheral wall of the cylinder (11), and the first end of the airbag (21) is clamped between the first pressure ring (23) and the outer peripheral wall of the cylinder (11); And / or, the air spring assembly (2) includes a second pressure ring (24), the second end of the airbag (21) and the second pressure ring (24) are both sleeved on the outer peripheral wall of the end cap (221), and the second end of the airbag (21) is clamped between the second pressure ring (24) and the outer peripheral wall of the end cap (221).

5. The shock absorption device according to claim 1, characterized in that, The air spring assembly (2) further includes a buffer block (25), which is disposed inside the airbag (21). The buffer block (25) is connected to the piston rod (12) and arranged close to the end cap component (22). The hardness of the buffer block (25) is less than that of the end cap component (22).

6. The shock absorption device according to claim 5, characterized in that, The buffer block (25) is sleeved on the piston rod (12), and the buffer block (25) is an elastic rubber block.

7. The shock absorption device according to claim 1, characterized in that, The shock absorption device also includes a protective sleeve (26), which is fitted on the outside of the airbag (21) and is connected to the end cap component (22).

8. The shock absorption device according to claim 7, characterized in that, There is an installation gap (L) between the outer peripheral wall of the airbag (21) and the inner peripheral wall of the protective sleeve (26).

9. The shock absorption device according to any one of claims 1-8, characterized in that, The cylinder (11) contains hydraulic oil. The damper (1) also includes an oil seal (13) and a limiting plate (14). The oil seal (13) is located at one end of the cylinder (11) near the airbag (21). The piston rod (12) passes through the oil seal (13). The limiting plate (14) is located on the side of the oil seal (13) near the end cap component (22). The limiting plate (14) is connected to the cylinder (11). And / or, the shock-absorbing device further includes an air nozzle (3) disposed on the end cap component (22), the air nozzle (3) being used to inflate the airbag (21).

10. A mobility scooter, characterized in that, include: The shock absorption device is the shock absorption device according to any one of claims 1-9; The frame and wheels, the wheels being mounted on the frame, the wheels having axles, the cylinder (11) being connected to the axles, and the end cap component (22) being connected to the frame.

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