Dust cover in conjunction with structure, air spring assembly and vehicle

Abstract

This utility model discloses a dust cover fitting structure, an air spring assembly, and a vehicle. The dust cover fitting structure includes: a first dust cover, one end of which has an annular first mounting portion, the inner circumferential surface of which forms a first mating surface; a mounting base, on which an annular second mounting portion is provided, the outer circumferential surface of which forms a second mating surface, and the first mounting portion is fitted onto the second mounting portion; one of the first and second mating surfaces is formed as an improved surface, and multiple grooves are formed on the improved surface. The grooves extend along a first extension line in the circumferential direction of the improved surface, and the first extension line is a wavy line. According to the dust cover fitting structure of this utility model, when the mounting base and the first dust cover undergo relative torsion, the one of the first and second mounting portions with grooves can undergo torsional deformation, thereby reducing the relative displacement between the first dust cover and the mounting base, and thus reducing the frictional noise between the first dust cover and the mounting base.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to a dust cover assembly, an air spring assembly, and a vehicle. Background Technology

[0002] Air spring assemblies are installed on some vehicles to dampen vibrations. Because they are located under the vehicle body and close to the ground, the working environment is relatively dirty. Dust covers are installed on the air spring assemblies to protect the moving parts. The dust cover is connected to the mounting bracket of the air spring assembly at one end. During vehicle operation, the air spring assembly is constantly subjected to impacts, which inevitably causes relative torsion between the dust cover and the mounting bracket, resulting in friction noise. In related technologies, the friction noise between the dust cover and the mounting bracket is relatively large. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention provides a dust cover assembly structure that can reduce noise during the operation of the air spring assembly.

[0004] This utility model also proposes an air spring assembly with the above-mentioned dust cover cooperation structure.

[0005] This utility model also proposes a vehicle having the above-mentioned air spring assembly.

[0006] According to the dust cover mating structure of the first aspect of this utility model, it includes: a first dust cover, one end of which is provided with an annular first mounting portion, the inner circumferential surface of which forms a first mating surface; a mounting base, on which is provided an annular second mounting portion, the outer circumferential surface of which forms a second mating surface, the first mounting portion being sleeved on the second mounting portion, the first mating surface and the second mating surface being arranged opposite to each other; one of the first mating surface and the second mating surface is formed as an improved surface, a plurality of grooves are formed on the improved surface, the grooves extending along a first extension line in the circumferential direction of the improved surface, the first extension line being a wavy line, and the plurality of grooves being arranged sequentially in the axial direction of the first mounting portion.

[0007] According to the dust cover mating structure of the first aspect of the present invention, by providing a wavy groove at the mating point of the first dust cover and the mounting base, when the mounting base and the first dust cover are relatively twisted, the one of the first mounting part and the second mounting part with the groove can generate torsional deformation, thereby reducing the relative displacement between the first dust cover and the mounting base, and thus reducing the friction noise between the first dust cover and the mounting base.

[0008] According to some embodiments of the present invention, the groove is arranged around the axis of the improved surface.

[0009] According to some embodiments of the present invention, the first extension line is a sinusoidal wavy line.

[0010] According to some embodiments of the present invention, the wavelength of the first extension line is greater than or equal to 1 mm and less than or equal to 2 mm; and / or, the wave height of the first extension line is greater than or equal to 0.4 mm and less than or equal to 0.5 mm.

[0011] According to some embodiments of the present invention, the roughness Ra of the improved surface is greater than or equal to 0.8 μm and less than or equal to 2 μm.

[0012] According to some embodiments of this utility model, the groove is filled with lubricating material.

[0013] According to some embodiments of the present invention, the dust cover mating structure further includes: a clamp, which is sleeved on the radially outer side of the first mounting part.

[0014] The air spring assembly according to the second aspect of the present invention includes: the dust cover mating structure according to the first aspect of the present invention.

[0015] According to the second aspect of the present invention, by providing the dust cover matching structure according to the first aspect of the present invention, the noise during the operation of the air spring assembly can be reduced.

[0016] According to some embodiments of the present invention, the air spring assembly further includes: a liner and a second dust cover, the liner being connected between one end of the second dust cover and one end of the first dust cover away from the first mounting portion, the first dust cover, the liner and the second dust cover cooperating to define a receiving cavity; an air bladder and a piston, the air bladder and the piston being disposed in the receiving cavity.

[0017] The vehicle according to the third aspect of the present invention includes: the air spring assembly according to the second aspect of the present invention.

[0018] According to the third aspect of the present invention, by providing the air spring assembly according to the second aspect of the present invention, the noise during vehicle operation can be reduced.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] Figure 1This is a schematic diagram of an air spring assembly according to an embodiment of the present utility model;

[0021] Figure 2 yes Figure 1 A cross-sectional view of a portion of the air spring assembly shown;

[0022] Figure 3 yes Figure 2 The enlarged view of point A shown in the image.

[0023] Figure label:

[0024] 100. Air spring assembly;

[0025] 10. First dust cover; 11. First mounting part; 12. First mating surface;

[0026] 20. Mounting base; 21. Second mounting part; 22. Second mating surface; 23. Groove;

[0027] 30. Clamps;

[0028] 40. Padding;

[0029] 50. Second dust cover;

[0030] 60. Airbag;

[0031] 70. Piston. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0033] The following is for reference. Figures 1-3 The dust cover assembly structure according to the first aspect of the present invention is described.

[0034] like Figures 1-3 As shown, the dust cover mating structure according to the first aspect embodiment of the present utility model includes: a first dust cover 10 and a mounting base 20.

[0035] Specifically, one end of the first dust cover 10 is provided with an annular first mounting portion 11, the inner circumferential surface of the first mounting portion 11 is formed as a first mating surface 12, and the mounting base 20 is provided with an annular second mounting portion 21, the outer circumferential surface of the second mounting portion 21 is formed as a second mating surface 22, the first mounting portion 11 is fitted onto the second mounting portion 21, the first mating surface 12 and the second mating surface 22 are arranged opposite to each other, one of the first mating surface 12 and the second mating surface 22 is formed as an improved surface, and a plurality of grooves 23 are formed on the improved surface. The grooves 23 extend along a first extension line in the circumferential direction of the improved surface. The first extension line is a wavy line, and the plurality of grooves 23 are arranged sequentially in the axial direction of the first mounting portion 11. For example, there can be two, three, five, ten, thirty or fifty grooves 23.

[0036] In other words, the wavy groove 23 can be provided on the first mounting part 11 or on the second mounting part 21.

[0037] The mounting bracket 20 is used to connect the air spring assembly 100 to the vehicle body. During vehicle operation, when the air spring assembly 100 is subjected to impact, torque will inevitably be generated at the connection between the mounting bracket 20 and the first dust cover 10, causing relative displacement between the first dust cover 10 and the mounting bracket 20. To improve the sealing performance of the dust cover, the fixing force between the dust cover and the mounting bracket 20 is usually relatively large. Thus, when the mounting bracket 20 and the first dust cover 10 undergo relative displacement, noise may be generated. In particular, the dust cover is usually made of materials such as vulcanized rubber. In low-temperature environments, the hardness of the first dust cover 10 will increase, and the noise will be even greater when the first dust cover 10 and the mounting bracket 20 undergo relative displacement.

[0038] In this embodiment, a wavy groove 23 is provided on the first mounting portion 11 or the second mounting portion 21 at the mating point of the first dust cover 10 and the mounting base 20. As those skilled in the art will understand, the structure with the groove 23 is thinner and the structural strength at the groove 23 is weaker than that at the location without the groove 23.

[0039] During vehicle operation, when the wheel is impacted, causing the air spring assembly 100 to twist, which in turn causes the first dust cover 10 and the mounting base 20 to twist relative to each other, the structure around the groove 23 will deform toward the groove 23. Therefore, the first mounting part 11 and the second mounting part 21 with the groove 23 will undergo torsional deformation. This can offset part of the torque between the first dust cover 10 and the mounting base 20, thereby reducing the relative displacement between the first dust cover 10 and the mounting base 20. When the relative displacement between the first dust cover 10 and the mounting base 20 is reduced, the noise generated by the relative displacement between the first dust cover 10 and the mounting base 20 will also be reduced. Thus, the noise during the operation of the air spring assembly 100 can be reduced.

[0040] According to the dust cover mating structure of the first aspect of the present invention, by providing a wavy groove 23 at the mating point of the first dust cover 10 and the mounting base 20, when the mounting base 20 and the first dust cover 10 are relatively twisted, the one of the first mounting part 11 and the second mounting part 21 provided with the groove 23 can generate torsional deformation, thereby reducing the relative displacement between the first dust cover 10 and the mounting base 20, and thus reducing the friction noise between the first dust cover 10 and the mounting base 20.

[0041] In some embodiments of this utility model, the groove 23 is arranged around the axis of the improved surface.

[0042] Thus, a groove 23 is provided around the first mounting part 11 or the second mounting part 21. When the first dust cover 10 and the mounting base 20 are relatively twisted, the circumference of the first mounting part 11 or the second mounting part 21 can be deformed, thereby offsetting part of the relative twist between the first dust cover 10 and the mounting base 20, further reducing the frictional noise between the first dust cover 10 and the mounting base 20. Furthermore, when the first mounting part 11 or the second mounting part 21 undergoes torsional deformation, the force distribution is more uniform, which can reduce the stress integration degree on the first mounting part 11 or the second mounting part 21 and improve the reliability of the connection between the mounting base 20 and the first dust cover 10.

[0043] In some embodiments of this utility model, the first extension line is a sinusoidal wavy line.

[0044] In this way, the concentration of grooves 23 on the improved surface can be reduced, thereby reducing the degree of structural damage to the one of the first mounting part 11 and the second mounting part 21 in which grooves 23 are provided, and further improving the connection reliability between the mounting base 20 and the first dust cover 10.

[0045] In some embodiments of this utility model, the wavelength of the first extension line is greater than or equal to 1 mm and less than or equal to 2 mm.

[0046] For example, the wavelength of the first extension line can be 1 mm, 1.1 mm, 1.3 mm, 1.8 mm, or 2 mm. This ensures that the connection strength at the first mounting portion 11 and the second mounting portion 21 meets the usage requirements, and that the noise level generated by the relative displacement between the mounting base 20 and the first dust cover 10 meets the usage requirements.

[0047] During the product design process, the wavelength of the first extension line can be adjusted within the above range to meet more product design needs.

[0048] In some embodiments of this utility model, the wave height of the first extension line is greater than or equal to 0.4 mm and less than or equal to 0.5 mm.

[0049] For example, the wave height of the first extension line can be 0.4mm, 0.41mm, 0.43mm, 0.46mm, 0.49mm or 0.5mm.

[0050] Therefore, the connection strength at the first mounting part 11 and the second mounting part 21 can meet the usage requirements, and the noise level generated by the relative displacement between the mounting base 20 and the first dust cover 10 can meet the usage requirements.

[0051] During the product design process, the wave height of the first extension line can be adjusted within the above range to meet more product design needs.

[0052] In some embodiments of this invention, the roughness Ra of the improved surface is greater than or equal to 0.8 μm and less than or equal to 2 μm.

[0053] For example, the roughness Ra of the improved surface can be 0.8 μm, 0.9 μm, 1.1 μm, 1.2 μm, 1.7 μm, 1.8 μm or 2 μm.

[0054] Therefore, the coefficient of friction between the first mating surface 12 and the second mating surface 22 can meet the usage requirements, and the adhesion ability of the lubricating material between the first mating surface 12 and the second mating surface 22 can meet the usage requirements.

[0055] Preferably, the improved surface is treated using a sandblasting process.

[0056] In some embodiments of this utility model, the groove 23 is filled with lubricating material.

[0057] By filling the groove 23 with lubricating material, on the one hand, when the mounting base 20 and the first dust cover 10 undergo relative torsion, the lubricating material can further reduce the frictional noise between the mounting base 20 and the first dust cover 10; on the other hand, the lubricating material can provide sealing performance between the first mating surface 12 and the second mating surface 22.

[0058] Preferably, the lubricating material is a silicone-based grease.

[0059] In some embodiments of this utility model, such as Figure 1 and Figure 3 As shown, the dust cover assembly structure also includes: a clamp 30, which is fitted on the radial outer side of the first mounting part 11.

[0060] By setting clamp 30, the reliability of the connection between the first dustproof cover and the mounting base 20 can be improved, and clamp 30 is easy to operate, which can reduce the assembly difficulty during the assembly process.

[0061] The following is for reference. Figures 1-3 The air spring assembly 100 according to a second aspect embodiment of the present invention is described.

[0062] like Figures 1-3 As shown, the air spring assembly 100 according to the second aspect of the present invention includes: the dust cover mating structure described above according to the first aspect of the present invention.

[0063] According to the second aspect embodiment of the present invention, the noise of the air spring assembly 100 can be reduced by providing the dust cover cooperation structure according to the first aspect embodiment of the present invention.

[0064] In some embodiments of this utility model, such as Figure 2 As shown, the air spring assembly 100 also includes: a gasket 40, a second dust cover 50, an airbag 60, and a piston 70.

[0065] Specifically, the pad 40 is connected between one end of the second dust cover 50 and the end of the first dust cover 10 away from the first mounting part 11. The first dust cover 10, the pad 40 and the second dust cover 50 cooperate to define a receiving cavity, and the airbag 60 and the piston 70 are disposed in the receiving cavity.

[0066] The first dust cover 10, the pad 40, and the second dust cover 50 can protect the airbag 60 and the piston 70. The airbag 60 and the piston 70 enable the air spring assembly 100 to perform its function. The air spring assembly 100 has a high vibration damping effect, which can improve the driving experience of the occupants.

[0067] During the operation of the air spring assembly 100, when the mounting base 20 and the first dust cover 10 are relatively twisted, the one of the first mounting part 11 and the second mounting part 21 with the groove 23 can generate torsional deformation, thereby reducing the relative displacement between the first dust cover 10 and the mounting base 20, and thus reducing the frictional noise between the first dust cover 10 and the mounting base 20.

[0068] The vehicle according to a third aspect of the present invention includes: the air spring assembly 100 according to the second aspect of the present invention.

[0069] According to the third aspect of the present invention, the vehicle can reduce noise during vehicle operation.

[0070] 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.

[0071] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0072] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," 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 communication connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0073] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. 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.

[0074] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A dust cover fitting structure characterized by comprising: include: A first dust cover (10) is provided at one end of a first annular mounting part (11), and the inner circumferential surface of the first mounting part (11) is formed as a first mating surface (12). Mounting base (20), the mounting base (20) is provided with an annular second mounting part (21), the outer peripheral surface of the second mounting part (21) is formed as a second mating surface (22), the first mounting part (11) is sleeved on the second mounting part (21), and the first mating surface (12) and the second mating surface (22) are arranged opposite to each other; One of the first mating surface (12) and the second mating surface (22) is formed as an improved surface. A plurality of grooves (23) are formed on the improved surface. The grooves (23) extend along a first extension line in the circumferential direction of the improved surface. The first extension line is a wavy line. The plurality of grooves (23) are arranged sequentially in the axial direction of the first mounting part (11).

2. The dust cover fitting structure according to claim 1, characterized by The groove (23) is arranged around the axis of the improved surface.

3. The dust cover fitting structure according to claim 1, characterized by The first extension line is a sinusoidal wavy line.

4. The dust cover fitting structure according to claim 3, characterized by The wavelength of the first extension line is greater than or equal to 1 mm and less than or equal to 2 mm; And / or, the wave height of the first extension line is greater than or equal to 0.4 mm and less than or equal to 0.5 mm.

5. The dust cover fitting structure according to claim 1, wherein The roughness Ra of the improved surface is greater than or equal to 0.8 μm and less than or equal to 2 μm.

6. The grommet fitting structure according to any one of claims 1 to 5, characterized by The groove (23) is filled with lubricating material.

7. The dust cover fitting structure according to claim 1, wherein The dust cover assembly structure further includes a clamp (30), which is fitted on the radial outer side of the first mounting part (11).

8. An air spring assembly (100), characterized in that, include: The dust cover assembly structure according to any one of claims 1-7.

9. The air spring assembly (100) of claim 8, wherein, Also includes: A liner (40) and a second dust cover (50) are provided, wherein the liner (40) is connected between one end of the second dust cover (50) and one end of the first dust cover (10) away from the first mounting part (11), and the first dust cover (10), the liner (40) and the second dust cover (50) cooperate to define a receiving cavity. An airbag (60) and a piston (70) are disposed in the receiving cavity.

10. A vehicle characterized by comprising: include: The air spring assembly (100) according to claim 8 or 9.

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