Rubber spring pad with improved fatigue resistance

Abstract

The utility model relates to a rubber spring pad of promoting anti -fatigue performance relates to shock absorber technical field, the technical scheme who adopts includes body and lifting part, the body includes annular base, the inside positioning part of setting in the annular base and the outside limiting portion of setting in the annular base outside, the inside positioning part, annular base, outside limiting portion form the U type groove of cooperation with spiral spring, the annular base upper surface still is provided with the lifting part, the height of lifting part is higher than the annular base upper surface, and the lifting part upper surface includes the slope of extending to the U type groove bottom surface, the utility model utilizes the lifting part to cause the shearing stress of spring end to disperse to whole rubber spring pad to improve the anti -fatigue performance of rubber spring pad greatly.

Description

Technical Field

[0001] This utility model relates to the field of shock absorber technology, and in particular to a rubber spring pad that improves fatigue resistance. Background Technology

[0002] Traditional MacPherson strut shock absorbers consist of a coil spring and a spring plate to support it, with a rubber spring pad placed between the coil spring and the spring plate for cushioning. Typically, the overall thickness of the rubber spring pad is between 2.5 and 4 mm, and its fatigue resistance is poor. During use, due to the reciprocating motion of the coil spring, the rubber spring pad will quickly break at the contact point with the spring end, causing the spring end to directly contact the spring plate and produce abnormal noise. Utility Model Content

[0003] In view of the problem that the contact point between the rubber spring pad and the spring end is easily damaged in the existing technical solution, this utility model provides a rubber spring pad with improved fatigue resistance.

[0004] This utility model provides the following technical solution: a rubber spring pad with improved fatigue resistance, comprising: The body includes an annular base, an inner positioning part disposed inside the annular base, and an outer limiting part disposed outside the annular base. The inner positioning part, the annular base, and the outer limiting part form a U-shaped groove that cooperates with a helical spring. The lifting part is further provided on the upper surface of the annular base. The height of the lifting part is higher than the upper surface of the annular base, and the upper surface of the lifting part includes a slope extending to the bottom surface of the U-shaped groove.

[0005] Preferably, the height difference between the highest point of the lifting section and the upper surface of the annular base is 2~5 mm.

[0006] Preferably, the top of the lifting part and the connection between the lifting part and the inner positioning part, the annular base and the outer limiting part are all provided with rounded corners.

[0007] Preferably, the upper surface of the annular base is further provided with a limiting block for limiting the end of the helical spring. The limiting block is located near the lifting part, and the annular base is further provided with a through groove on the side of the limiting block away from the lifting part.

[0008] Preferably, the lower surface of the annular base is also provided with an anti-detachment pin.

[0009] The beneficial effects of this utility model are: a lifting part corresponding to the end of the helical spring is provided on the upper surface of the annular base, and the lifting part and the bottom surface of the U-shaped groove are transitioned by a slope, which disperses the shear stress caused by the end of the spring to the entire rubber spring pad, thereby greatly improving the fatigue resistance of the rubber spring pad. Attached Figure Description

[0010] Figure 1 A three-dimensional diagram of one embodiment of a rubber spring pad.

[0011] Figure 2 This is a side view of one embodiment of a rubber spring pad.

[0012] Figure 3 for Figure 2 A magnified view of a portion of the image.

[0013] Figure 4 This is a schematic diagram of a rubber spring pad after fatigue testing.

[0014] Reference numerals: 10-body, 11-ring base, 12-inner positioning part, 13-outer limiting part, 14-anti-detachment pin, 20-lifting part, 21-slope, 30-limiting block, 31-through groove. Detailed Implementation

[0015] The embodiments of this utility model will be described in more detail below with reference to the accompanying drawings and reference numerals, so that those skilled in the art can implement them after reading this specification. It should be understood that the specific embodiments described herein are only for explaining this utility model and are not intended to limit this utility model.

[0016] This invention provides a rubber spring pad that improves fatigue resistance, which is installed between the shock absorber helical spring and the spring tray.

[0017] Please refer to Figure 1 , 2 The rubber spring pad includes a body 10, a lifting part 20, and a limiting block 30. The body 10, referencing existing technology, includes an annular base 11, an inner positioning part 12 located inside the annular base 11, and an outer limiting part 13 located outside the annular base 11. The connection between these three parts is rounded, and the inner positioning part 12, the annular base 11, and the outer limiting part 13 form a U-shaped groove that mates with the helical spring. The end of the helical spring is inserted into the U-shaped groove to mate with the rubber spring pad. Since the spring end only contacts a portion of the rubber spring pad, the outer limiting part 13 is generally only provided on the outer edge of the annular base 11. The lower surface of the rubber spring pad mates with the spring tray and is fitted onto the spring tray mounting base by the inner positioning part 12. Multiple anti-detachment pins 14 are provided on the lower surface of the annular base 11, and the anti-detachment pins 14 are inserted into the corresponding through holes of the spring tray.

[0018] Please refer to Figure 1 , 23. A lifting part 20 is also provided on the upper surface of the annular base 11. The lifting part 20 is located near the outer limiting part 13, corresponding to the position of the end of the helical spring. The height of the lifting part 20 is higher than the upper surface of the annular base 11, and the height difference between its highest point and the upper surface of the annular base is preferably 2~5 mm. The upper surface of the lifting part 20 includes a slope 21 extending to the bottom surface of the U-shaped groove, so that the lifting part 20 and the bottom surface of the U-shaped groove are transitioned by the slope 21. The top of the lifting part 20, as well as the connection between the lifting part 20 and the inner positioning part 12, the annular base 11, and the outer limiting part 13, are all provided with rounded corners.

[0019] During assembly, the end of the helical spring contacts the lifting part 20, distributing the shear stress caused by the spring end to the entire rubber spring pad, thereby significantly improving the service life of the rubber spring pad. Fatigue tests were conducted on the rubber spring pad using the lifting part 20. After the test, the rubber spring pad showed only slight wear, such as… Figure 4 As shown.

[0020] Furthermore, the upper surface of the annular base 11 is also provided with a limiting block 30 for limiting the end of the helical spring. The limiting block 30 is located near the lifting part 20. During assembly, the end of the helical spring is locked by the limiting block 20 to prevent the helical spring from moving relative to the rubber spring pad during use. The annular base 11 is also provided with a through groove 31 on the side of the limiting block 30 away from the lifting part 20. A protrusion on the spring tray can protrude from the through groove 31 to support the limiting block 20 and enhance stability.

[0021] The above describes one or more embodiments of this utility model in a relatively specific and detailed manner, but it should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A rubber spring pad with improved fatigue resistance, characterized in that, include: The body includes an annular base, an inner positioning part disposed inside the annular base, and an outer limiting part disposed outside the annular base. The inner positioning part, the annular base, and the outer limiting part form a U-shaped groove that cooperates with a helical spring. The lifting part is further provided on the upper surface of the annular base. The height of the lifting part is higher than the upper surface of the annular base, and the upper surface of the lifting part includes a slope extending to the bottom surface of the U-shaped groove.

2. The rubber spring pad for improving fatigue resistance according to claim 1, characterized in that, The height difference between the highest point of the lifting section and the upper surface of the annular base is 2~5 mm.

3. The rubber spring pad for improving fatigue resistance according to claim 1, characterized in that, The top of the lifting part, as well as the connection points between the lifting part and the inner positioning part, the annular base, and the outer limiting part, are all provided with rounded corners.

4. A rubber spring pad for improving fatigue resistance according to claim 1, characterized in that, The upper surface of the annular base is also provided with a limiting block for limiting the end of the helical spring. The limiting block is located near the lifting part, and the annular base is also provided with a through groove on the side of the limiting block away from the lifting part.

5. A rubber spring pad for improving fatigue resistance according to claim 1, characterized in that, The lower surface of the annular base is also provided with anti-detachment pins.

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