Anti-sinking air spring dust cover

Abstract

The utility model provides an anti-sinking air spring dust cover, relates to the technical field of air springs, and aims to solve the technical problem that an air spring dust cover in the prior art is prone to sinking when subjected to stress impact. An anti-sinking air spring dust cover comprises an aluminum pile casing buckling end, a spring plate assembling end and a corrugated section formed between the aluminum pile casing buckling end and the spring plate assembling end, wave crests and wave troughs are formed on the corrugated section, the outer contour of each wave crest is in a circular arc shape, the inner contour of each wave crest is in a trapezoid shape, and the short bottom edge of each trapezoid is arranged outwards; the dust cover is not easy to sink and move when being impacted by stress, so that abnormal sound generated by contact with a shock absorber or other parts is avoided, and the durability of the product is improved; under the influence of uncontrollable external force, after the dust cover is depressed and deformed, the anti-depressing structure of the dust cover generates restoring force for maintaining the original form, the dust cover is prevented from cracking caused by movement under the corrugated depressing working condition, the durability of the product is improved, and the service life is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to air spring technical field, specifically refers to a kind of anti-dust cover of anti-dimple air spring. BACKGROUND

[0002] Passenger car air suspension system, by air spring replace traditional coil spring, realize vehicle height adjustable, different load under suspension frequency is basically consistent and the absorption filtering effect to road high frequency impact, improve the smoothness and steering stability of car.The core component of air spring is by rubber material and curtain line layer compound air bag, and by air bag realizes the airtightness of air spring, pressure and meets the stretch and compression stroke.As air spring is a closed system under working condition, with the compression or stretch of air spring, air spring internal pressure will rise or reduce.

[0003] Air spring is usually set in dust cover to prevent mud and the like from entering the interior of air spring and causing wear to the bladder of air spring.The dust cover of air spring is connected with aluminum bushing at one end and connected with spring disc at the other end, and the middle of the dust cover of air spring is in wave shape and has wave crest.The conventional dust cover of air spring is prone to dishing when subjected to stress impact, thereby contacting shock absorber or other components to produce abnormal noise problem and durability problem, affecting the performance, service life and user experience of product. SUMMARY

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a dust cover of anti-dimple air spring to solve the technical problem that the dust cover of air spring in the prior art is prone to dishing when subjected to stress impact.

[0005] To solve the above technical problems, the utility model provides a dust cover of anti-dimple air spring, which comprises an aluminum bushing fastening end, a spring disc assembling end and a corrugated section formed between the aluminum bushing fastening end and the spring disc assembling end, and the corrugated section has wave crest and wave trough formed thereon, wherein the outer contour of the wave crest is in arc shape, the inner contour of the wave crest is in trapezoidal shape, and the shorter base of the trapezoidal shape is outwardly arranged.

[0006] With the above structure, the anti-dust cover of the air spring has the following advantages: the outer profile and the inner profile of the traditional air spring anti-dust cover are both circular, and when the anti-dust cover is subjected to stress impact, the outer part of the wave crest is deformed inwardly, and a relatively stable triangular structure is easily formed on the inner and outer profiles, which causes the anti-dust cover to be unable to recover; in the utility model, the outer profile and the inner profile of the wave crest are different in shape, and under the working condition of stress extrusion or tensile stress, the outer profile of the circular arc is deformed to generate a deformation force, while the inner profile of the trapezoid generates a restoring force to resist deformation, and the outer profile and the inner profile are both unable to form a triangular structure, and the restoring force is greater than the deformation force, so that the structure of the anti-dust cover rebounds, prevents the occurrence of depression, and maintains the working state of the wavy anti-dust cover; the anti-dust cover is not prone to depression and movement when subjected to stress impact, thereby avoiding abnormal noise caused by contact with the shock absorber or other components, improving the durability and user experience of the product; under the influence of uncontrollable external force, the anti-dust cover is deformed after depression, and the anti-dust structure of the anti-dust cover generates a restoring force to maintain the original shape, avoids the cracking problem caused by movement of the anti-dust cover under the corrugated depression working condition, improves the durability of the product, and ensures the service life.

[0007] As an improvement, the trapezoid is an isosceles trapezoid and is symmetrically arranged upward and downward about the axis of the circular arc; with this structure, the inner and outer profiles of the wave crest are symmetrically arranged, the stress is more balanced, and the anti-dust cover is further prevented from being deformed.

[0008] As an improvement, the trapezoid is an isosceles trapezoid and is symmetrically arranged upward and downward about the axis of the circular arc; with this structure, the inner and outer profiles of the wave crest are symmetrically arranged, the stress is more balanced, and the anti-dust cover is further prevented from being deformed.

[0009] As an improvement, the trapezoid is an isosceles trapezoid and is symmetrically arranged upward and downward about the axis of the circular arc; with this structure, the inner and outer profiles of the wave crest are symmetrically arranged, the stress is more balanced, and the anti-dust cover is further prevented from being deformed.

[0010] As an improvement, the trapezoid is an isosceles trapezoid and is symmetrically arranged upward and downward about the axis of the circular arc; with this structure, the inner and outer profiles of the wave crest are symmetrically arranged, the stress is more balanced, and the anti-dust cover is further prevented from being deformed.

[0011] As an improvement, the trapezoid is an isosceles trapezoid and is symmetrically arranged upward and downward about the axis of the circular arc; with this structure, the inner and outer profiles of the wave crest are symmetrically arranged, the stress is more balanced, and the anti-dust cover is further prevented from being deformed.

[0012] As an improvement, the trapezoid is an isosceles trapezoid and is symmetrically arranged upward and downward about the axis of the circular arc; with this structure, the inner and outer profiles of the wave crest are symmetrically arranged, the stress is more balanced, and the anti-dust cover is further prevented from being deformed.

[0013] As an improvement, the trapezoid is an isosceles trapezoid and is symmetrically arranged upward and downward about the axis of the circular arc; with this structure, the inner and outer profiles of the wave crest are symmetrically arranged, the stress is more balanced, and the anti-dust cover is further prevented from being deformed. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a sectional view of the utility model.

[0015] Figure 2 is Figure 1 is a local enlarged view of A part in the middle.

[0016] Figure 3 is a schematic diagram of the utility model.

[0017] Reference signs: 1, aluminum sleeve buckling end; 2, spring disc assembly end; 3, corrugated section; 4, wave crest; 5, wave trough; 6, circular arc; 7, trapezoid; 8, long straight section; 9, round corner; 10, first clamping groove; 11, clamp groove; 12, second clamping groove. DETAILED DESCRIPTION

[0018] The utility model discloses a kind of anti-dimple air spring dust covers, which will be described in detail below with reference to the accompanying drawings.

[0019] As Figures 1 to 3 shown, an anti-dimple air spring dust cover, including aluminum sleeve buckling end 1, spring disc assembly end 2 and the corrugated section 3 formed between aluminum sleeve buckling end 1 and spring disc assembly end 2, first clamping groove 10 is arranged on the inner wall of aluminum sleeve buckling end 1, clamp groove 11 is arranged on the outer wall of aluminum sleeve buckling end 1, second clamping groove 12 is arranged on the inner wall of spring disc assembly end 2, the specific connection structure and connection mode of dust cover and aluminum sleeve, spring disc are prior art, and here is not repeated.

[0020] As Figure 1 and Figure 2 shown, wave crest 4 and wave trough 5 are formed on corrugated section 3, the outer profile of wave crest 4 is circular arc 6, the inner profile of wave crest 4 is trapezoid 7, the shorter base of trapezoid 7 is outwardly arranged, and it needs to be explained that the performance of the inner profile of trapezoid 7 actually only has a shorter base and two waists, and the base is outwardly arranged and arranged along the vertical direction. Further, trapezoid 7 is isosceles trapezoid and symmetrically arranged up and down with the axis of symmetry of circular arc 6 as the axis.

[0021] As Figure 2 shown, long straight section 8 is arranged on both sides of trapezoid 7, long straight section 8 is connected to the waist of trapezoid 7 and extends inwardly, the included angle α between the waist of trapezoid 7 and long straight section 8 ranges from 168° to 172°, the included angle β between the waist of trapezoid 7 and the base ranges from 117° to 121°, and it needs to be explained that the included angle in the utility model is accurate to the inward side, that is, to the interior space of dust cover, as Figure 2 shown. In the embodiment, the included angle α between the waist of trapezoid 7 and long straight section 8 is preferably 170°, and the included angle β between the waist of trapezoid 7 and the base is preferably 119°.

[0022] AsFigure 2 As shown, the trapezoid 7 has rounded corners 9 between its waist and base. In this embodiment, as a preferred option, the dust cover is made of EPDM material, the radius of the arc 6 is 3.3mm, the maximum distance b between the base of the trapezoid 7 and the arc 6 is 2.9mm, the radius of the two rounded corners 9 is 0.5mm, and the length of the base of the trapezoid 7 is 2.2mm, ensuring sufficient local wall thickness to provide structural support.

[0023] Traditional air spring dust covers have circular outer and inner contours for the wave crest 4. When subjected to stress impact, the outer side of the wave crest 4 deforms inward, easily forming a relatively stable triangular structure on both the inner and outer contours, making the dust cover unable to recover. In this invention, the outer and inner contours of the wave crest 4 have different shapes. Under the condition of external force compression or tensile stress, the outer contour of the arc 6 deforms and generates deformation force, while the inner contour of the trapezoid 7 generates a restoring force to resist deformation. Neither the outer nor the inner contour can form a triangular structure. The restoring force is greater than the deformation force, causing the dust cover structure to rebound, preventing dents and maintaining the wave-shaped working state of the dust cover. The dust cover is less prone to denting and shifting when subjected to stress impact, thus avoiding abnormal noises caused by contact with shock absorbers or other components, improving product durability and user experience. Under the influence of uncontrollable external forces, after the dust cover dents and deforms, the anti-dent structure of the dust cover generates a restoring force to maintain its original shape, avoiding cracking caused by movement of the dust cover under corrugated dent conditions, improving product durability and ensuring service life.

[0024] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above-described embodiment. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

Claims

1. A dent-resistant air spring dust cover, comprising an aluminum sleeve fastening end (1), a spring disc assembly end (2), and a corrugated section (3) formed between the aluminum sleeve fastening end (1) and the spring disc assembly end (2), wherein the corrugated section (3) has crests (4) and troughs (5), characterized in that, The outer contour of the crest (4) is an arc (6), and the inner contour of the crest (4) is a trapezoid (7), with the shorter bottom edge of the trapezoid (7) facing outward.

2. The anti-dent air spring dust cover according to claim 1, characterized in that, The trapezoid (7) is an isosceles trapezoid and is arranged symmetrically about the axis of symmetry of the arc (6).

3. The anti-dent air spring dust cover according to claim 2, characterized in that, The trapezoid (7) has long straight sections (8) on both sides. The angle α between the waist of the trapezoid (7) and the long straight section (8) is in the range of 168°-172°. The angle β between the waist of the trapezoid (7) and the base is in the range of 117°-121°.

4. The anti-dent air spring dust cover according to claim 3, characterized in that, The angle α between the waist of the trapezoid (7) and the long straight segment (8) is 170°, and the angle β between the waist of the trapezoid (7) and the base is 119°.

5. The anti-dent air spring dust cover according to claim 2, characterized in that, The trapezoid (7) has rounded corners (9) between its waist and base.

6. The anti-dent air spring dust cover according to claim 1, characterized in that, The inner wall of the aluminum sleeve fastening end (1) is provided with a first slot (10).

7. The anti-dent air spring dust cover according to claim 6, characterized in that, The outer wall of the aluminum sleeve fastening end (1) is provided with a clamp groove (11).

8. The anti-dent air spring dust cover according to claim 1, characterized in that, The inner wall of the spring disc assembly end (2) is provided with a second slot (12).

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