Dustproof structure and shock absorber

Abstract

According to the dustproof structure and the shock absorber, the dustproof structure is used for being matched with the shock absorber to achieve dust prevention of the shock absorber, the shock absorber comprises the dustproof cover and the oil cylinder, the dustproof cover is partially arranged outside the oil cylinder in a sleeved mode, and the dustproof structure comprises the first bristle assembly which is used for being arranged on the dustproof cover. The first bristle assembly is used for shielding a gap between the dust cover and the oil cylinder, and the second bristle assembly is used for being arranged on the outer side wall of the oil cylinder and also used for shielding the gap between the dust cover and the oil cylinder. Under shielding of the first bristle assembly and the second bristle assembly, sand and external foreign matter cannot enter the shock absorber through the space between the dustproof cover and the oil cylinder, and compared with a rubber dustproof structure, the first bristle assembly and the second bristle assembly are more beneficial to heat dissipation; therefore, reliable dust prevention of the shock absorber can be achieved through the dustproof structure, and heat dissipation of the shock absorber is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of dustproof technology for vibration dampers, and in particular to a dustproof structure and a vibration damper. Background Technology

[0002] Currently, shock absorbers use dustproof structures to prevent the piston rod from being scratched by sand or foreign objects during operation. The usual dust cover has a gap with the cylinder, and foreign objects splash in during vehicle operation. Although the rubber dust cover has no gap, it is not conducive to heat dissipation. Utility Model Content

[0003] Therefore, the main objective of this utility model is to provide a dustproof structure and vibration damper that can reliably prevent dust and facilitate heat dissipation.

[0004] To achieve the above objectives, this utility model provides a dustproof structure for use with a vibration damper to prevent dust from entering the vibration damper. The vibration damper includes a dust cover and a hydraulic cylinder, with the dust cover partially fitted over the hydraulic cylinder. The dustproof structure includes:

[0005] A first bristle assembly is provided on the dust cover, and the first bristle assembly is used to cover the gap between the dust cover and the oil cylinder.

[0006] The second bristle assembly is used to be disposed on the outer side wall of the oil cylinder, and the second bristle assembly is also used to cover the gap between the dust cover and the oil cylinder.

[0007] Optionally, one end of the first bristle assembly is disposed on the inner side wall of the dust cover, and the other end of the first bristle assembly abuts against the outer side wall of the oil cylinder.

[0008] Optionally, the first bristle assembly includes a plurality of spaced-apart first bristles, which are arranged circumferentially on the dust cover; the second bristle assembly includes a plurality of spaced-apart second bristles, which are arranged circumferentially on the outer wall of the oil cylinder.

[0009] Optionally, the first brush bristles are perpendicular or acute to the axis of the dust cover; the first brush bristles are perpendicular or acute to the axis of the oil cylinder.

[0010] Optionally, the first brush bristles are bonded and fixed to the dust cover, and the second brush bristles are bonded and fixed to the outer wall of the oil cylinder.

[0011] Optionally, the first brush bristles are fixed to the dust cover by adhesive tape, and the second brush bristles are fixed to the outer wall of the oil cylinder by adhesive tape.

[0012] Optionally, the spacing between two adjacent first bristles is 1-2 mm, and the spacing between two adjacent second bristles is 1-2 mm.

[0013] Optionally, the first bristles are made of a flexible material and are elastic, and the second bristles are made of a flexible material and are elastic.

[0014] Optionally, the first bristles are made of nylon, pig bristles, or horsehair; the second bristles are made of nylon, pig bristles, or horsehair.

[0015] To achieve the above objectives, this utility model also provides a vibration damper, including the aforementioned dustproof structure.

[0016] The advantages of this utility model are as follows: During the use of the shock absorber, the gap between the dust cover and the oil cylinder is blocked by the first brush assembly and the second brush assembly. As a result, the piston rod of the shock absorber is blocked by sand particles and foreign objects during operation, and cannot enter the interior of the shock absorber through the gap between the dust cover and the oil cylinder. Moreover, the first brush assembly and the second brush assembly are more conducive to heat dissipation than the rubber dustproof structure. Thus, the dustproof structure can achieve reliable dust protection and facilitate heat dissipation of the shock absorber. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the devices shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a vibration damper according to one embodiment;

[0019] Among them, 100 is the first bristle assembly; 110 is the first bristle; 200 is the second bristle assembly; 210 is the second bristle; 300 is the dust cover; 400 is the hydraulic cylinder; and 500 is the piston rod.

[0020] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this utility model are only used to explain the relative positional relationship and movement of the components in a specific posture (as shown in the attached figure). If the specific posture changes, the directional indication will also change accordingly. Furthermore, the descriptions involving "first," "second," etc., in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, "and / or" throughout the text includes three solutions. Taking A and / or B as an example, it includes technical solution A, technical solution B, and a technical solution that simultaneously satisfies A and B. Furthermore, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0023] like Figure 1 As shown, a dustproof structure is used in conjunction with a shock absorber to prevent dust from entering the shock absorber. The shock absorber includes a dust cover 300 and a hydraulic cylinder 400. The dust cover 300 is partially fitted over the hydraulic cylinder 400. The dustproof structure includes a first bristle assembly for being disposed on the dust cover 300 and for blocking the gap between the dust cover 300 and the hydraulic cylinder 400. A second bristle assembly is disposed on the outer side wall of the hydraulic cylinder 400 and for blocking the gap between the dust cover 300 and the hydraulic cylinder 400.

[0024] During use, the gap between the dust cover 300 and the cylinder 400 is blocked by the first brush assembly and the second brush assembly. As a result, the piston rod 500 of the shock absorber is blocked by sand particles and foreign objects during operation, and cannot enter the interior of the shock absorber through the gap between the dust cover 300 and the cylinder 400. Moreover, the first brush assembly and the second brush assembly are more conducive to heat dissipation than the rubber dustproof structure. Thus, the dustproof structure can achieve reliable dust protection and facilitate heat dissipation of the shock absorber.

[0025] Specifically, under normal conditions, dust prevention is mainly achieved by the first bristle assembly. Only the first bristle assembly can achieve dust prevention. Since the piston rod 500 of the shock absorber can drive the dust cover 300 to move relative to the cylinder 400, the second bristle assembly is sometimes not covered by the dust cover 300. Therefore, the second bristle assembly can only cover the gap between the dust cover 300 and the cylinder 400 for part of the time.

[0026] During the operation of the shock absorber, the maximum distance between the first brush assembly and the second brush assembly is less than the stroke of the shock absorber. As a result, when the shock absorber is running at its full stroke, the first brush assembly and the second brush assembly can intersect, allowing the dust on the first brush assembly and the second brush assembly to interact with each other.

[0027] Furthermore, the maximum distance between the first brush assembly and the second brush assembly is close to the stroke of the shock absorber, specifically less than 20mm. In this way, when the shock absorber is not in its full stroke, the first brush assembly and the second brush assembly may not intersect, thereby reducing the probability of friction between the first brush assembly and the second brush assembly, and thus improving the service life of the first brush assembly and the second brush assembly.

[0028] refer to Figure 1 One end of the first bristle assembly is disposed on the inner side wall of the dust cover 300, and the other end of the first bristle assembly abuts against the outer side wall of the oil cylinder 400, thereby ensuring that the first bristle assembly covers the gap between the dust cover 300 and the oil cylinder 400.

[0029] refer to Figure 1 The first bristle assembly includes a plurality of spaced-apart first bristles 110 arranged circumferentially on the dust cover 300. The second bristle assembly includes a plurality of spaced-apart second bristles 210 arranged circumferentially on the outer wall of the hydraulic cylinder 400. Specifically, the gap between the dust cover 300 and the hydraulic cylinder 400 is an annular gap, and the circumferential arrangement of the first bristles 110 and second bristles 210 can potentially cover the gap between the dust cover 300 and the hydraulic cylinder 400. Furthermore, one end of each first bristle 110 is disposed on the inner wall of the dust cover 300, and the other end of each first bristle 110 abuts against the outer wall of the hydraulic cylinder 400.

[0030] refer to Figure 1The first bristle 110 is perpendicular or acute to the axis of the dust cover 300; the first bristle 110 is also perpendicular or acute to the axis of the hydraulic cylinder 400. In this embodiment, the first bristle 110 is acute to the axis of the dust cover 300 and the axis of the hydraulic cylinder 400. This results in less friction and wear on the free ends of the first bristle 110 and the second bristle 210, further extending the service life of the first and second bristle assemblies. Furthermore, the first bristle 110 is at a 45° angle to the axis of the dust cover 300 and the axis of the hydraulic cylinder 400.

[0031] The first bristle 110 is bonded and fixed to the dust cover 300, and the second bristle 210 is bonded and fixed to the outer wall of the oil cylinder 400.

[0032] In this embodiment, the first brush bristles 110 are fixed to the dust cover 300 by adhesive, and the second brush bristles 210 are fixed to the outer wall of the cylinder 400 by adhesive. It is understood that the first brush bristles 110 and the second brush bristles 210 can also be fixed by other means, as long as the first brush bristles 110 and the second brush bristles 210 can be reliably fixed.

[0033] refer to Figure 1 The spacing between two adjacent first bristles 110 is 1-2mm, and the spacing between two adjacent second bristles 210 is 1-2mm. This achieves both reliable dust prevention and reliable heat dissipation. Too small a spacing is not conducive to heat dissipation, and too large a spacing is not conducive to dust prevention.

[0034] Optionally, the diameter of the first bristle 110 is 0.3-0.8 mm, and the diameter of the second bristle 210 is 0.3-0.8 mm. Preferably, the diameter of the first bristle 110 is 0.5 mm, and the diameter of the second bristle 210 is 0.5 mm.

[0035] Specifically, the first bristle 110 is made of a flexible material and is elastic, and the second bristle 210 is made of a flexible material and is elastic, thus ensuring that the first bristle 110 and the second bristle 210 can reliably prevent dust without affecting the normal operation of the shock absorber within its stroke.

[0036] In this embodiment, the first bristle 110 is made of nylon, pig bristles, or horsehair; the second bristle 210 is made of nylon, pig bristles, or horsehair. It is understood that in other embodiments, the first bristle 110 and the second bristle 210 may also be made of other flexible and elastic materials that do not affect the normal operation of the shock absorber within its stroke and can achieve reliable dustproofing.

[0037] like Figure 1 As shown, a vibration damper includes the aforementioned dustproof structure.

[0038] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent device transformations made based on the contents of this utility model specification and drawings under the utility model concept, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A dustproof structure for use with a vibration damper to achieve dust protection for the vibration damper, the vibration damper comprising a dust cover and a hydraulic cylinder, the dust cover being partially sleeved outside the hydraulic cylinder, characterized in that, The dustproof structure includes: A first bristle assembly is disposed on the dust cover, and the first bristle assembly is used to cover the gap between the dust cover and the oil cylinder. The second bristle assembly is used to be disposed on the outer side wall of the oil cylinder, and the second bristle assembly is also used to cover the gap between the dust cover and the oil cylinder.

2. The dustproof structure as described in claim 1, characterized in that, One end of the first bristle assembly is disposed on the inner side wall of the dust cover, and the other end of the first bristle assembly abuts against the outer side wall of the oil cylinder.

3. The dustproof structure as described in claim 1, characterized in that, The first bristle assembly includes a plurality of spaced-apart first bristles, which are arranged circumferentially on the dust cover. The second bristle assembly includes a plurality of spaced-apart second bristles, which are arranged circumferentially on the outer wall of the oil cylinder.

4. The dustproof structure as described in claim 3, characterized in that, The first brush bristles are perpendicular or acute to the axis of the dust cover; the first brush bristles are perpendicular or acute to the axis of the oil cylinder.

5. The dustproof structure as described in claim 3, characterized in that, The first brush bristles are bonded and fixed to the dust cover, and the second brush bristles are bonded and fixed to the outer wall of the oil cylinder.

6. The dustproof structure as described in claim 5, characterized in that, The first bristles are fixed to the dust cover by adhesive, and the second bristles are fixed to the outer wall of the oil cylinder by adhesive.

7. The dustproof structure as described in claim 3, characterized in that, The spacing between two adjacent first bristles is 1-2 mm, and the spacing between two adjacent second bristles is 1-2 mm.

8. The dustproof structure as described in claim 3, characterized in that, The first bristles are made of a flexible material and are elastic, and the second bristles are also made of a flexible material and are elastic.

9. The dustproof structure as described in claim 8, characterized in that, The first bristles are made of nylon, pig bristles, or horsehair; the second bristles are made of nylon, pig bristles, or horsehair.

10. A vibration damper, characterized in that, Includes the dustproof structure as described in any one of claims 1-9.

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