Dustproof bearing assembly and shock absorber
By setting up a hook structure along the ring cup edge of the vibration damper support, two-stage interference assembly and anti-demounting are achieved, the problem of dust cover falling off is solved, ensuring the internal cleanliness of the vibration damper and ensuring normal operation.
Patent Information
- Application Number
- CN202421786552.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-26
- Publication Date
- 2025-04-18
- Estimated Expiration
- 2034-07-26
AI Technical Summary
The dustproof sleeve of existing shock absorbers is prone to fall off when subjected to axial or non-axial forces, causing impurities such as dust to invade the inside of the shock absorber, affecting its normal operation.
By providing a hook structure along the radially retracted annular cup of the support, a two-stage interference assembly and anti-deloading structure is formed to ensure that the dustproof sleeve is stably mounted on the support and prevent impurities from invading.
Effectively prevent the dust cover from falling off from the support, ensure the stable dust cover set under various driving conditions, prevent dust and other impurities from invading the vibration absorber, and ensure the normal operation of the vibration absorber.
Smart Images
Figure CN222772571U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of shock absorbers, in particular to a dustproof support assembly and a shock absorber. Background Art
[0002] The support of the shock absorber is arranged at the end of the shock absorber, and is used to connect the shock absorber and the vehicle body, and can attenuate the vibration transmitted to the vehicle body by the ground, thereby improving the driving comfort and handling of the vehicle.
[0003] The port of the support is connected to the dust cover, which is covered outside the main part of the shock absorber to prevent the intrusion of dust and impurities. The current problems between the support and the dust cover are:
[0004] The dust cover is interference fit on the port of the support; during the operation of the shock absorber, when the dust cover is subjected to a large axial or non-axial force, the dust cover is easy to fall off from the support, causing dust and other impurities to invade the interior of the shock absorber, affecting the normal operation of the shock absorber.
[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the utility model, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content
[0006] In view of this, the utility model provides a dustproof support assembly and a shock absorber, which effectively prevent the dust cover from falling off the support member through axial and radial two-stage interference fit and an anti-drop mounting structure, ensuring that the dust cover is stably mounted on the annular cup edge of the support member under various driving conditions when the shock absorber has a swing angle, thereby preventing dust and other impurities from invading the interior of the shock absorber to ensure the normal operation of the shock absorber.
[0007] According to one aspect of the utility model, a dustproof support assembly is provided, comprising a support member and a dustproof sleeve mounted on the annular cup edge of the support member, wherein: the annular cup edge is radially retracted relative to the annular body of the support member; the annular cup edge is provided with a hook structure, a first space for interference pressing the assembly end of the dustproof sleeve is formed between the free end of the hook structure and the annular body, and a second space for the assembly end to be interference-engaged and mounted on the free end is formed between the free end and the annular cup edge.
[0008] In some embodiments, a chamfered surface is provided at the bottom of the hook structure, and the chamfered surface is used to guide the assembly of the assembly end.
[0009] In some embodiments, the angle between the chamfered surface and the axial direction is between 30° and 45°.
[0010] In some embodiments, the extending length of the chamfered surface is between 1 mm and 2 mm.
[0011] In some embodiments, an outer diameter of the hook structure is not greater than an outer diameter of the annular body.
[0012] In some embodiments, the hook structure and the support are integrally injection molded.
[0013] In some embodiments, the hook structure includes a plurality of segments evenly spaced circumferentially distributed on the annular cup edge.
[0014] In some embodiments, the hook structure includes at least three sections.
[0015] In some embodiments, the height of the annular cup along the axial direction is no greater than 5% of the height of the support along the axial direction.
[0016] According to another aspect of the utility model, a shock absorber is provided, wherein the shock absorber is equipped with the dustproof support assembly as described in any of the above embodiments.
[0017] Compared with the prior art, the beneficial effects of the present invention include at least:
[0018] The dustproof support assembly of the utility model is provided with a hook structure on the radially inwardly contracted annular cup edge of the support member, so that a suitable first space is left between the free end of the hook structure and the annular body, and a suitable second space is left between the annular cup edge. The first space is used for interference pressing the assembly end of the dustproof sleeve, and the second space is for the assembly end to be interference-engaged to be mounted on the free end. In this way, the axial and radial two-stage interference assembly of the first space and the second space and the anti-detachment mounting effect of the hook structure can effectively prevent the dustproof sleeve from falling off the support member, ensure that the dustproof sleeve is stably mounted on the annular cup edge of the support member under various driving conditions such as when the shock absorber has a swing angle, and play a role in preventing dust and other impurities from invading the interior of the shock absorber to ensure the normal operation of the shock absorber.
[0019] The dustproof support assembly of the utility model is convenient to assemble the dustproof sleeve and the support member. It only needs to put the assembly end of the dustproof sleeve on the annular cup edge of the support member and push it along the hook structure until the assembly end is pressed into the second space reserved between the free end of the hook structure and the annular cup edge, so that the assembly end is mounted on the free end. At the same time, the assembly end is pressed into the first space reserved between the free end of the hook structure and the annular body, and the assembly of the dustproof sleeve and the support member is completed.
[0020] It should be understood that the above general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present invention, and together with the specification, are used to explain the principles of the present invention. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0022] Figure 1 A schematic structural diagram of a dustproof support assembly in an embodiment of the utility model is shown;
[0023] Figure 2 A schematic diagram showing the structure of the support member of the dustproof support assembly in the embodiment of the utility model;
[0024] Figure 3 A schematic diagram showing the hook structure of the dustproof support assembly in an embodiment of the utility model. DETAILED DESCRIPTION
[0025] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein. Instead, these embodiments are provided to make the present invention more comprehensive and complete and to fully convey the concepts of the example embodiments to those skilled in the art.
[0026] The accompanying drawings are only schematic illustrations of the present invention and are not necessarily drawn to scale. The same reference numerals in the drawings represent the same or similar structures, and thus their repeated description will be omitted.
[0027] The words "first", "second" and similar words used in the specific description do not indicate any order, quantity or importance, but are only used to distinguish different components. The orientation or position relationship indicated by the terms "bottom", "top", "axial", "radial" and the like are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they cannot be understood as limitations on the present utility model. The term "plurality" means two or more, unless otherwise clearly and specifically defined. In addition, in the description of the present utility model, when it is said that a device is "connected" to another device, this includes not only direct connections, but also indirect connections through other elements.
[0028] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in different embodiments may be combined with each other.
[0029] Figure 1 The structure of the dustproof support assembly in the embodiment of the utility model is schematically shown. Figure 2The structure of the support member of the dustproof support assembly is shown schematically. Figure 3 Shows the hook structure of the dustproof support assembly; combined Figures 1 to 3 As shown, the dustproof support assembly provided by the embodiment of the utility model includes:
[0030] The support member 10 and the dust cover 20 sleeved on the annular cup edge 11 of the support member 10, wherein:
[0031] The annular cup 11 is radially inwardly contracted relative to the annular body 12 of the support 10;
[0032] The annular cup edge 11 is provided with a hook structure 30, and a first space S1 is formed between the free end 33 of the hook structure 30 and the annular body 12 for interference pressing the assembly end 22 of the dust cover 20, and a second space S2 is formed between the free end 33 and the annular cup edge 11 for the assembly end 22 to be interference-engaged and mounted on the free end 33.
[0033] The dustproof support assembly of the utility model is provided with a hook structure 30 on the radially inwardly contracted annular cup edge 11 of the support 10, so that a suitable first space S1 is reserved between the free end 33 of the hook structure 30 and the annular body 12, and a suitable second space S2 is reserved between the annular cup edge 11, the first space S1 is used for interference pressing the assembly end 22 of the dustproof sleeve 20, and the second space S2 is for the assembly end 22 to be interference-engaged to be mounted on the free end 33; in this way, through the two-stage interference assembly including the axial interference pressing of the first space S1 and the radial interference clamping of the second space S2, and in conjunction with the anti-detachment mounting function of the hook structure 30, the dustproof sleeve 20 is effectively prevented from falling off from the support 10, ensuring that the dustproof sleeve 20 is stably mounted on the annular cup edge 11 of the support 10 under various driving conditions such as when the shock absorber has a swing angle, so as to prevent dust and other impurities from invading the interior of the shock absorber, so as to ensure the normal operation of the shock absorber.
[0034] The dustproof support assembly of the utility model is convenient to assemble the dustproof sleeve 20 and the support member 10. It is only necessary to put the assembly end 22 of the dustproof sleeve 20 on the annular cup edge 11 of the support member 10 and push it along the hook structure 30 until the assembly end 22 is pressed into the second space S2 reserved between the free end 33 of the hook structure 30 and the annular cup edge 11, so that the assembly end 22 is mounted on the free end 33. At the same time, the assembly end 22 is pressed into the first space S1 reserved between the free end 33 of the hook structure 30 and the annular body 12, and the assembly of the dustproof sleeve 20 and the support member 10 is completed.
[0035] Among them, the distribution of the hook structure 30 on the annular cup edge 11, the size of the hook structure 30, and the size of the first space S1 and the second space S2 can be set as needed, as long as it can effectively prevent the dust cover 20 from falling off and facilitate the assembly of the dust cover 20 and the support 10.
[0036] In some embodiments, a chamfered surface 36 is disposed at the bottom of the hook structure 30 , and the chamfered surface 36 is used to guide the assembly end 22 so that the assembly end 22 can be easily assembled along the chamfered surface 36 .
[0037] Specifically, during assembly, the assembly end 22 is put on the annular cup edge 11 and pushed along the chamfered slope 36 of the hook structure 30 until the assembly end 22 is pressed into the second space S2 with interference, and the assembly end 22 is mounted on the free end 33. At the same time, the assembly end 22 is pressed tightly in the first space S1, and the assembly of the dust cover 20 and the support 10 is completed.
[0038] In some embodiments, the angle between the chamfered surface 36 and the axial direction "Z" is between 30° and 45°. By designing the angle between the chamfered surface 36 and the axial direction "Z", the assembly end 22 is guided along the chamfered surface 36 for convenient assembly, and a suitable second space S2 is left between the free end 33 of the hook structure 30 and the annular cup edge 11.
[0039] In some embodiments, the extension length of the chamfered surface 36 is between 1 mm and 2 mm. In this way, the chamfered surface 36 plays an effective guiding role, and the hook structure 30 is prevented from being too large in size and affecting the assembly of the dust cover 20.
[0040] In some embodiments, the outer diameter of the hook structure 30 is not greater than the outer diameter of the annular body 12. Furthermore, the hook structure 30 is integrally injection molded with the support member 10. In this way, the support member 10 with the hook structure 30 can be removed from the mold at one time, reducing costs without adding additional processing steps.
[0041] In some embodiments, the hook structure 30 includes multiple sections evenly spaced in the circumferential direction on the annular cup edge 11. In this way, with the help of the multiple sections of the hook structure 30 in the circumferential direction, the dust cover 20 is fixed in sections in the circumferential direction, so that the dust cover 20 is firmly mounted on the annular cup edge 11 of the support 10, meeting the requirements of easy assembly of the dust cover 20 and not easy to loosen.
[0042] In some embodiments, the hook structure 30 includes at least three sections, and each section of the hook structure 30 has the same shape and size, so as to achieve uniform and stable assembly of the dust cover 20 in the circumferential direction.
[0043] Of course, the number and distribution of the hook structures 30 of the present invention are not limited to the above examples, as long as the requirements of easy assembly and non-loosening of the dust cover 20 can be met.
[0044] In some embodiments, the height of the annular cup 11 along the axial direction “Z” is no greater than 5% of the height of the support 10 along the axial direction “Z”.
[0045] The main body of the support 10 is used to accommodate the rubber bushing assembly. The height of the annular cup edge 11 is designed to be no greater than 5% of the height of the support 10, which ensures that the dust cover 20 is firmly mounted on the annular cup edge 11 while avoiding affecting the structural strength of the main body of the support 10.
[0046] The embodiment of the utility model further provides a shock absorber, which is equipped with a dustproof support assembly as described in any of the above embodiments. The shock absorber can be a rear shock absorber of a vehicle, and the support member 10 can be an upper support member, but is not limited thereto.
[0047] The shock absorber is equipped with the above dustproof support assembly, which can achieve the following beneficial effects:
[0048] By arranging a hook structure 30 on the radially inwardly contracted annular cup edge 11 of the support 10, a suitable first space S1 is reserved between the free end 33 of the hook structure 30 and the annular body 12, and a suitable second space S2 is reserved between the annular cup edge 11. The first space S1 is used for interference pressing the assembly end 22 of the dust cover 20, and the second space S2 is used for interference snapping the assembly end 22 to be mounted on the free end 33. In this way, through the two-stage interference assembly including the axial interference pressing of the first space S1 and the radial interference snapping of the second space S2, and in conjunction with the anti-drop mounting function of the hook structure 30, the dust cover 20 is effectively prevented from falling off from the support 10, ensuring that the dust cover 20 is stably mounted on the annular cup edge 11 of the support 10 under various driving conditions such as when the shock absorber has a swing angle, thereby preventing dust and other impurities from invading the interior of the shock absorber to ensure the normal operation of the shock absorber.
[0049] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.
Claims
1. A dustproof support assembly, comprising a support member and a dustproof sleeve sleeved on the annular cup edge of the support member, characterized in that: The annular cup is radially inwardly contracted relative to the annular body of the support; The annular cup edge is provided with a hook structure, and a first space is formed between the free end of the hook structure and the annular body for interference pressing the assembly end of the dust cover, and a second space is formed between the free end and the annular cup edge for the assembly end to be interference-engaged and mounted on the free end.
2. The dustproof support assembly according to claim 1, characterized in that: The bottom of the hook structure is provided with a chamfered slope, and the chamfered slope is used to guide the assembly of the assembly end.
3. The dustproof support assembly according to claim 2, characterized in that: The angle between the chamfered surface and the axial direction is between 30° and 45°.
4. The dustproof support assembly according to claim 2, characterized in that: The extending length of the chamfered surface is between 1 mm and 2 mm.
5. The dustproof support assembly according to claim 1, characterized in that: The outer diameter of the hook structure is not greater than the outer diameter of the annular body.
6. The dustproof support assembly according to claim 5, characterized in that: The hook structure and the support member are integrally injection-molded.
7. The dustproof support assembly according to claim 1, characterized in that: The hook structure includes a plurality of sections which are evenly spaced and distributed around the annular cup edge.
8. The dustproof support assembly according to claim 7, characterized in that: The hook structure includes at least three sections.
9. The dustproof support assembly according to claim 1, characterized in that: The height of the annular cup edge in the axial direction is not greater than 5% of the height of the support member in the axial direction.
10. A shock absorber, characterized in that: The shock absorber is equipped with a dustproof support assembly as described in any one of claims 1-9.