Anti-loosening fastening mechanism for end cover of oil damper

Abstract

The utility model discloses an oil damper end cover anti-loosening fastening mechanism, which comprises a damper body, an upper end cover is arranged above the damper body, a locking structure is arranged between the damper body and the upper end cover, the locking structure comprises six fastening bolts which are in threaded connection with the interior of the upper end cover, and the upper end cover is connected with the damper body. The bottom of the fastening bolt is connected with the upper end of the shock absorber body, the outer wall of the fastening bolt is in threaded connection with a nylon insert nut, a spring washer is arranged below the nylon insert nut, a lock washer is arranged at one end of the bottom of the spring washer, and a sealing structure is arranged at the upper end of the shock absorber body. The spring washer is arranged on the outer wall of the fastening bolt in a sleeving mode, the bottom of the spring washer is fixedly connected with the lock washer, the nylon insert nut is arranged to be in a hexagonal shape, the lock washer is fixedly installed at the upper end of the upper end cover, and the end cover and the shock absorber can be installed and fastened relatively to prevent loosening and falling off. And the installation sealing performance of the end cover and the shock absorber is improved.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic vibration damper technology, and in particular to a hydraulic vibration damper end cap anti-loosening fastening mechanism. Background Technology

[0002] A hydraulic vibration damper is a device that uses the viscous resistance of a liquid (usually oil) to achieve vibration reduction. Its working principle is based on the resistance generated when a liquid flows; by controlling the flow of oil inside the damper, vibration energy is dissipated, thereby reducing vibration and impact.

[0003] Existing hydraulic vibration dampers have some shortcomings in use. When the hydraulic vibration damper is working, it generates periodic vibration and impact force, which can easily cause the end cap to vibrate too much and fall off. This leads to rapid leakage of hydraulic oil, which not only causes the vibration damper to fail to work properly due to lack of hydraulic oil and lose its vibration damping function, but may also pollute the surrounding environment and reduce the service life of the vibration damper. In order to address the above problems, an improved and upgraded end cap anti-loosening fastening mechanism for hydraulic vibration dampers is proposed. Utility Model Content

[0004] The purpose of this utility model is to provide a hydraulic shock absorber end cap anti-loosening fastening mechanism to solve the problems mentioned in the background art.

[0005] To solve the above problems, the following technical solution is provided: a hydraulic shock absorber end cap anti-loosening fastening mechanism, including a shock absorber body, an upper end cap provided on the top of the shock absorber body, a locking structure provided between the shock absorber body and the upper end cap, the locking structure including six fastening bolts threaded inside the upper end cap, the bottom of the fastening bolts being connected to the upper end of the shock absorber body, a nylon insert nut being threaded to the outer wall of the fastening bolt, and a spring washer being provided below the nylon insert nut, a stop washer being provided at one bottom end of the spring washer, and a sealing structure being provided at the upper end of the shock absorber body.

[0006] As a preferred embodiment of the above technical solution, the spring washer is sleeved on the outer wall of the fastening bolt, and the bottom of the spring washer is fixedly connected to the stop washer, and the nylon insert nut is configured in a hexagonal shape.

[0007] As a preferred embodiment of the above technical solution, the locking washer is fixedly installed on the upper end of the upper cover, and multiple protrusions are fixedly provided on the outer wall of the locking washer, and the outer side of the nylon insert nut is adapted to the protrusions.

[0008] As a preferred embodiment of the above technical solution, the sealing structure includes a fixed plate that is fixedly installed on the upper end of the shock absorber body, and a sealing groove is provided inside the fixed plate and a sealing gasket is fixedly installed inside the sealing groove.

[0009] As a preferred embodiment of the above technical solution, a sealing gasket is fitted on the inner wall of the six fastening bolts at the bottom of the upper cover, and the sealing gasket and sealing washer are adapted to the size of the sealing groove.

[0010] As a preferred embodiment of the above technical solution, both the sealing gasket and the sealing washer have snap-fit ​​grooves inside, and one end of the fastening bolt passes through the sealing washer and the extended end is connected inside the sealing groove.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model device includes components such as a nylon insert nut, bolt, spring washer, locking washer, and upper end cap. Tightening the nylon insert nut compresses the spring washer, causing it to press against the locking washer. This aligns the protrusions of the nylon insert nut and the locking washer, facilitating effective fastening of the end cap and shock absorber during installation. This prevents the shock absorber from loosening and leaking due to prolonged vibration during end cap installation, greatly improving the reliability of the end cap's anti-loosening function, reducing the risk of shock absorber failure due to end cap loosening, and extending the service life of the shock absorber.

[0013] 2. The device of this utility model is equipped with sealing gaskets, sealing washers, fixing plates and other components, which are conducive to effective sealing when the end cover is installed and fixed to the shock absorber, avoiding hydraulic oil leakage into the external environment and causing resource waste. The sealing structure can prevent external moisture, dust and other impurities from entering the shock absorber, avoiding corrosion and other problems, and ensuring the stable operation of the shock absorber.

[0014] Specific embodiments of the present invention are disclosed in detail with reference to the following description and accompanying drawings, indicating how the principles of the present invention can be employed. It should be understood that the embodiments of the present invention are not limited in scope. Within the spirit and scope of the appended claims, the embodiments of the present invention include many changes, modifications, and equivalents. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the overall structure of the anti-loosening fastening mechanism for the end cap of a hydraulic shock absorber according to this utility model;

[0017] Figure 2 This is a partially disassembled structural diagram of an anti-loosening fastening mechanism for the end cap of a hydraulic shock absorber according to the present invention;

[0018] Figure 3 for Figure 2A partial enlarged diagram of the split structure;

[0019] Figure 4 for Figure 2 A magnified schematic diagram of the localized explosion structure.

[0020] In the diagram: 1. Shock absorber body; 2. Upper end cover; 3. Locking structure; 31. Nylon insert nut; 32. Spring washer; 33. Fastening bolt; 34. Locking washer; 35. Protrusion; 4. Sealing structure; 40. Fixing plate; 41. Sealing groove; 42. Sealing washer; 43. Sealing gasket; 44. Snap-fit ​​groove. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] like Figures 1 to 4 As shown in the figure, this embodiment provides a hydraulic shock absorber end cap anti-loosening fastening mechanism, including a shock absorber body 1, an upper end cap 2 provided on the top of the shock absorber body 1, a locking structure 3 provided between the shock absorber body 1 and the upper end cap 2, the locking structure 3 including six fastening bolts 33 threadedly connected inside the upper end cap 2, the bottom of the fastening bolts 33 being connected to the upper end of the shock absorber body 1, a nylon insert nut 31 threadedly connected to the outer wall of the fastening bolts 33, and a spring washer 32 provided below the nylon insert nut 31, a stop washer 34 provided at one bottom end of the spring washer 32, and a sealing structure 4 provided at the upper end of the shock absorber body 1.

[0023] like Figures 2 to 3 As shown, the spring washer 32 is sleeved on the outer wall of the fastening bolt 33, and the bottom of the spring washer 32 is fixedly connected to the stop washer 34. The nylon insert nut 31 is set in a hexagonal shape. The stop washer 34 is fixedly installed on the upper end of the upper cover 2, and multiple protrusions 35 are fixedly provided on the outer wall of the stop washer 34. The outer side of the nylon insert nut 31 is adapted to the protrusions 35.

[0024] The elastic force provided by the spring washer 32 ensures that the connection between the end cover and the damper body 1 always maintains a certain preload, which can reduce the relative displacement between the end cover and the body even during vibration. The stop washer 34 restricts the rotation of the nut by mechanical locking, thereby effectively preventing the end cover from loosening due to vibration, ensuring the sealing and operational reliability of the hydraulic damper. The fastening bolt 33 is made of high-strength alloy steel to ensure sufficient fastening force and fatigue resistance.

[0025] like Figure 4As shown, the sealing structure 4 includes a fixed plate 40 fixedly installed on the upper end of the shock absorber body 1. The fixed plate 40 has a sealing groove 41 inside, and a sealing gasket 42 is fixedly installed inside the sealing groove 41. The bottom of the upper cover 2 is fitted with a sealing gasket 43 on the inner wall of the six fastening bolts 33. The sealing gasket 43 and the sealing gasket 42 are adapted to the size of the sealing groove 41. Both the sealing gasket 43 and the sealing gasket 42 have a snap-fit ​​groove 44 inside. One end of the fastening bolt 33 passes through the sealing gasket 42 and the extended end is connected to the inside of the sealing groove 41.

[0026] By positioning the upper end cover 2 relative to the fixed plate 40, the sealing gasket 43 below the upper end cover 2 is forced to press the sealing gasket 42 in the sealing groove 41, which facilitates relative sealing when the upper end cover 2 is installed and tightened, and prevents lubricating oil leakage.

[0027] The working principle and operation process of this utility model are as follows: Before using the hydraulic shock absorber, the operator first fixes the upper end cover 2 to the shock absorber by passing six fastening bolts 33 through the corresponding mounting holes of the upper end cover 2 and the upper end fixing plate 40 of the shock absorber body 1. Then, using a tool, the nylon insert nuts 31 on the outer wall of the six fastening bolts 33 inside the upper end cover 2 are rotated. When the nylon insert nuts 31 are tightened, the nylon rings and bolt threads are tightly fitted together, generating friction. This causes the nylon insert nuts 31 to squeeze the spring washer 32 on the stop washer 34 when rotating, causing the spring washer 32 to undergo elastic deformation and provide continuous elastic force. This ensures that the upper end cover 2 and the shock absorber body 1 remain tightly fitted, preventing the end cover from loosening due to vibration. When the nylon insert nut 31 rotates to be aligned with the retaining washer 34, the multiple protrusions 35 on the outer wall of the retaining washer 34 bend to the side edge of the nut, preventing the nut from rotating and thus preventing loosening. This facilitates the relative tightening of the end cover and vibrator during installation. At the same time, when installing the upper end cover 2 and the vibrator, the sealing gaskets 43 on the outer wall of the six fastening bolts 33 are pressed against the sealing grooves 41 on the fixed plate 40, causing the sealing gaskets 43 and the sealing washer 42 to press against each other. The six fastening bolts 33 limit the sealing gaskets 43 and the sealing washer 42, facilitating a relative seal between the cover plate and the vibrator during installation, and also playing a role in buffering vibration to a certain extent.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within 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.

[0029] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

Claims

1. A hydraulic damper end cap anti-loosening fastening mechanism, characterized in that, The device includes a shock absorber body (1), an upper end cover (2) is provided on the top of the shock absorber body (1), a locking structure (3) is provided between the shock absorber body (1) and the upper end cover (2), the locking structure (3) includes six fastening bolts (33) threaded inside the upper end cover (2), the bottom of the fastening bolts (33) is connected to the upper end of the shock absorber body (1), the outer wall of the fastening bolts (33) is threaded with a nylon insert nut (31), and a spring washer (32) is provided below the nylon insert nut (31), a stop washer (34) is provided at one end of the bottom of the spring washer (32), and a sealing structure (4) is provided at the upper end of the shock absorber body (1).

2. The anti-loosening fastening mechanism for the end cover of a hydraulic vibration damper according to claim 1, characterized in that, The spring washer (32) is sleeved on the outer wall of the fastening bolt (33), and the bottom of the spring washer (32) is fixedly connected to the stop washer (34). The nylon insert nut (31) is set in a hexagonal shape.

3. The anti-loosening fastening mechanism for the end cover of a hydraulic vibration damper according to claim 2, characterized in that, The stop washer (34) is fixedly installed on the upper end of the upper cover (2), and multiple protrusions (35) are fixedly provided on the outer wall of the stop washer (34). The outer side of the nylon insert nut (31) is adapted to the protrusions (35).

4. The anti-loosening fastening mechanism for the end cover of a hydraulic vibration damper according to claim 1, characterized in that, The sealing structure (4) includes a fixed plate (40) fixedly installed on the upper end of the damper body (1). The fixed plate (40) has a sealing groove (41) inside and a sealing gasket (42) is fixedly installed inside the sealing groove (41).

5. The anti-loosening fastening mechanism for the end cover of a hydraulic vibration damper according to claim 4, characterized in that, The bottom of the upper cover (2) is fitted with a sealing gasket (43) on the inner wall of the six fastening bolts (33), and the sealing gasket (43) and the sealing washer (42) are adapted to the size of the sealing groove (41).

6. The anti-loosening fastening mechanism for the end cover of a hydraulic vibration damper according to claim 5, characterized in that, Both the sealing gasket (43) and the sealing washer (42) have snap-fit ​​grooves (44) inside. One end of the fastening bolt (33) passes through the sealing washer (42) and the extended end is connected to the inside of the sealing groove (41).

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