CN213270817U

CN213270817U - Shock absorber with end cover and built-in return spring

Info

Publication number: CN213270817U
Application number: CN202022003900.5U
Authority: CN
Inventors: 龚斌
Original assignee: Shanghai Sachs Huizhong Shock Absorber Co Ltd
Current assignee: Shanghai Sachs Huizhong Shock Absorber Co Ltd
Priority date: 2020-09-15
Filing date: 2020-09-15
Publication date: 2021-05-25
Anticipated expiration: 2030-09-15

Abstract

The utility model relates to a shock absorber spare part field, specific saying is the shock absorber of the built-in reset spring who is equipped with the end cover, the connecting rod, stifle, the oil blanket, the director, the bush, reset buffer spring, the buffing pad, the piston valve, the inner tube, the urceolus, the bottom valve, the bottom, the upper end cover, the lower end cover, the urceolus cover is established outside the inner tube including the urceolus cover, the connecting rod is equipped with the bush outward, the connecting rod passes in the director inserts the inner tube, the entrance of urceolus is equipped with stifle, reset the buffer spring cover and establish at the connecting rod lower extreme, reset buffer spring's both ends and be equipped with the end cover, the piston valve passes through threaded connection and installs the bottom at the connecting rod. Compared with the prior art, the original plastic restoring buffer block is replaced by the restoring spring with the spring seat, so that the noise is reduced, and the comfort is improved; the upper spring seat and the lower spring seat can avoid the noise risk caused by the fact that the spring scratches the connecting rod during reciprocating motion, and avoid the noise caused by the fact that the metal spring impacts the guider during working.

Description

Shock absorber with end cover and built-in return spring

Technical Field

The utility model relates to a shock absorber spare part field, specific saying is the shock absorber of the built-in reset spring who is equipped with the end cover.

Background

With the development of the automobile industry, customers have higher and higher requirements on the running stability and controllability of vehicles. As the most important part on the chassis, the design of the shock absorber directly influences the driving property of the vehicle, and shock absorber manufacturers can continuously develop the shock absorber according to market demands to perfect the performance of the shock absorber.

At present, although the metal impact sound generated between the support ring and the guider under the limit stretching working condition of the shock absorber can be relieved by the plastic recovery buffer block in the traditional shock absorber, the impact sound and the collision sense can not be completely eliminated because the compression space of the plastic recovery buffer block is limited.

It is therefore necessary to design a shock absorber with an end cap and a built-in return spring.

Disclosure of Invention

The utility model discloses broken through prior art's a difficult problem, designed the shock absorber of the built-in reset spring who is equipped with the end cover.

In order to achieve the purpose, the utility model discloses a shock absorber of built-in reset spring with end cover, including the connecting rod, the stifle, the oil blanket, the director, the bush, reset buffer spring, the buffing pad, the piston valve, the inner tube, the urceolus, the bottom valve, the bottom, the upper end cover, the lower end cover, the urceolus cover is established outside the inner tube, the connecting rod is equipped with the bush outward, the inner tube entrance is equipped with the director, the connecting rod passes in the director inserts the inner tube, the entrance of urceolus is equipped with the stifle, reset buffer spring overlaps and establishes at the connecting rod lower extreme, reset buffer spring's upper end is equipped with the upper end cover, reset buffer spring's lower extreme is equipped with the lower end cover, the bottom of connecting rod is threaded, the piston valve passes through threaded connection and installs the bottom at the connecting rod.

The upper end of the outer side of the outer barrel is provided with a spring disc, and the lower part of the spring disc is provided with a support.

The lower end of the connecting rod is provided with a groove, and the buffer seat is arranged in the groove.

The upper end cover is in clearance fit with the connecting rod, and the lower end cover is in interference fit with the connecting rod.

The upper end cover, the lower end cover and the restoring buffer spring are in interference fit.

Compared with the prior art, the utility model adopts the restoring spring with the spring seat to replace the original plastic restoring buffer block, thereby reducing noise and improving comfort; the upper spring seat and the lower spring seat can avoid the noise risk caused by the fact that the spring scratches the connecting rod during reciprocating motion, and avoid the noise caused by the fact that the metal spring impacts the guider during working.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the restoring spring of the present invention.

Fig. 3 is an enlarged view of the position a of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

With reference to fig. 1 to 3, the present invention provides a shock absorber with an end cover and a built-in restoring spring, which comprises a connecting rod 1, a blank cap 2, an oil seal 3, a guider 4, a bushing 5, a restoring buffer spring 8, a buffer seat 9, a piston valve 10, an inner cylinder 11, an outer cylinder 12, a bottom valve 13, a bottom cover 14, an upper end cover 15 and a lower end cover 16, wherein the outer cylinder 12 is sleeved outside the inner cylinder 11, and the outer cylinder 12 is used for installing the shock absorber of an automobile at a corresponding position of an automobile chassis; the upper end of the outer side of the outer cylinder 12 is provided with a spring disc 6 for installing a large damping spring, the lower part of the spring disc 6 is provided with a support 7, a bush 5 is arranged outside the connecting rod 1, a guider 4 is arranged at the inlet of the inner cylinder 11, the connecting rod 1 penetrates through the guider 4 and is inserted into the inner cylinder 11, and a blank cap 2 is arranged at the inlet of the outer cylinder 12 to prevent dust from entering an oil seal and scratching the connecting rod 1; the lower end of the connecting rod 1 is sleeved with the restoring buffer spring 8, the upper end of the restoring buffer spring 8 is provided with the upper end cover 15, the lower end of the restoring buffer spring 8 is provided with the lower end cover 16, the lower end of the connecting rod 1 is provided with a groove, the buffer seat 9 is installed in the groove, the bottom end of the connecting rod 1 is provided with threads, the piston valve 10 is installed at the bottom end of the connecting rod 1 through threaded connection, the bottom of the inner barrel 11 is provided with the bottom valve 13, the bottom valve (13) is attached to the bottom cover (14), and the bottom of.

In the utility model, the restoring buffer spring 8 is a metal piece, and the upper end cover 15 and the lower end cover 16 are made of plastic; the upper end cover 15 and the lower end cover 16 are respectively pressed on the restoring buffer spring 8, the upper end cover 15 and the lower end cover 16 are in interference fit with the restoring buffer spring 8, and the minimum pulling-out force of the upper cover and the lower cover and the restoring buffer spring 6 is 80N, so that the upper end cover and the lower end cover cannot fall off in work of the restoring buffer spring 8, and the effect of fixing the spring is achieved.

The inner diameter of the lower end cover 16 is in interference fit with the connecting rod 1, and the minimum pulling-out force of the lower end cover and the connecting rod 1 is ensured to be 50N, so that the restoring buffer spring 8 is always attached to the buffer seat 9 in the working process of the shock absorber, and the impact noise of the shock absorber during the up-and-down reciprocating motion is reduced; the inner diameter of the upper end cover 15 is in clearance fit with the connecting rod 1, so that the restoring buffer spring 8 cannot be clamped on the connecting rod 1 when being pressed.

Claims

1. The utility model provides a shock absorber of built-in resilience spring with end cover, includes connecting rod (1), stifle (2), oil blanket (3), director (4), bush (5), restores buffer spring (8), cushion socket (9), piston valve (10), inner tube (11), urceolus (12), bottom valve (13), bottom (14), upper end cover (15), lower end cover (16), its characterized in that: the cover of urceolus (12) is established outside inner tube (11), connecting rod (1) is equipped with bush (5) outward, inner tube (11) entrance is equipped with director (4), connecting rod (1) passes director (4) and inserts in inner tube (11), the entrance of urceolus (12) is equipped with stifle (2), it establishes at connecting rod (1) lower extreme to recover buffer spring (8) cover, the upper end that recovers buffer spring (8) is equipped with upper end cover (15), the lower extreme that recovers buffer spring (8) is equipped with lower end cover (16), the bottom of connecting rod (1) has the screw thread, piston valve (10) pass through threaded connection and install the bottom in connecting rod (1), inner tube (11) bottom is equipped with bottom valve (13), bottom valve (13) and bottom cover (14) laminating, the bottom of urceolus (12) is sealed through bottom cover (14).

2. The damper with built-in restoring spring of end cap as set forth in claim 1, wherein: the spring disc (6) is arranged at the upper end of the outer side of the outer barrel (12), and the support (7) is arranged at the lower part of the spring disc (6).

3. The damper with built-in restoring spring of end cap as set forth in claim 1, wherein: the lower end of the connecting rod (1) is provided with a groove, and the buffer seat (9) is arranged in the groove.

4. The damper with built-in restoring spring of end cap as set forth in claim 1, wherein: the upper end cover (15) is in clearance fit with the connecting rod (1), and the lower end cover (16) is in interference fit with the connecting rod (1).

5. The damper with built-in restoring spring of end cap as set forth in claim 1, wherein: the upper end cover (15), the lower end cover (16) and the restoring buffer spring (8) are in interference fit.