CN216975646U

CN216975646U - Detachable automobile shock absorber ware piston rod

Info

Publication number: CN216975646U
Application number: CN202220405649.1U
Authority: CN
Inventors: 范志文; 武杰; 荀杰
Original assignee: Changzhou Deweisheng Auto Parts Co ltd
Current assignee: Changzhou Deweisheng Auto Parts Co ltd
Priority date: 2022-02-28
Filing date: 2022-02-28
Publication date: 2022-07-15
Anticipated expiration: 2032-02-28

Abstract

The utility model provides a detachable piston rod of an automobile shock absorber, which comprises a piston cylinder and a piston column, wherein the piston cylinder consists of two cylinder shells which are installed in half, connecting lugs are arranged at the upper and lower splicing edges of two sides of the two cylinder shells, and the two cylinder shells are connected through threads at the connecting lugs; the piston column comprises a movable column and a telescopic column, the movable column is vertically stretched in the piston cylinder through a return spring, the telescopic column is fixedly installed at the upper end of the movable column, a damping spring is fixedly installed at the upper end of the piston cylinder, the damping spring is sleeved on the outer side of the telescopic column, an integrally formed threaded column is arranged in the middle of the lower end of the piston cylinder, the piston cylinder is installed in the shock absorber through the threaded column, the damping spring is installed in the shock absorber, and the upper end of the piston column penetrates through the shock absorber and is vertically stretched through the damping spring; the piston rod is integrally arranged into a detachable structure, and the piston rod of the shock absorber is composed of the movable column, the telescopic column, the return spring and the two half-and-half mounted cylinder shells, so that the replaceability of components is realized, and the cost of integral scrapping is reduced.

Description

Detachable automobile shock absorber ware piston rod

Technical Field

The utility model belongs to the technical field of automobile shock absorbers, particularly relates to a piston rod for an automobile shock absorber, and particularly relates to a detachable piston rod for an automobile shock absorber.

Background

The term "shock absorber" is a general term used in the automotive chassis industry, and an automotive shock absorber is actually a vibration damper, and a shock absorber is used not only in a suspension but also in other locations in an automobile, such as a cab, a seat, a steering wheel, and the like, and also as a bumper for a vehicle. The piston rod is a connecting component for supporting the piston to do work, most of the piston rod is applied to an oil cylinder and an air cylinder movement executing component, and the piston rod is a moving component with frequent movement and high technical requirement, taking the hydraulic oil cylinder as an example, and comprises the following components in parts by weight: the cylinder barrel, the piston rod (oil cylinder rod), the piston and the end cover.

In order to ensure that a piston rod and a pressure system can be used for a long time during damping, a buffering and resetting spring part is usually sleeved outside the piston rod, so that the existing damper is used for protecting and buffering the piston column from retracting downwards under rapid pressure, and has an auxiliary resetting effect when the piston column rises, thereby ensuring the quality and the service life of the piston rod; however, the existing piston rod structure is usually an integral structure, a damping spring is sleeved outside the piston rod structure, and when the piston rod is worn or deformed, the piston rod structure can only be integrally replaced, so that the maintenance cost and the scrapping cost of the shock absorber are increased.

SUMMERY OF THE UTILITY MODEL

The utility model provides the following technical scheme aiming at the problems brought forward by the background technology:

a detachable automobile shock absorber piston rod comprises a piston cylinder and a piston column, wherein the piston cylinder is composed of two cylinder shells which are installed in half, connecting lugs are arranged at the upper and lower splicing edges of the two sides of the two cylinder shells, and the two cylinder shells are connected through the connecting lugs in a threaded mode; the piston post is including activity post and flexible post, the activity post is flexible from top to bottom in the piston cylinder through reset spring, flexible post fixed mounting is in activity post upper end, piston cylinder upper end fixed mounting has damping spring, the damping spring cover is in flexible post outside, be provided with integrated into one piece's screw thread post in the middle of the piston cylinder lower extreme, the piston cylinder passes through the screw thread post and installs in the bumper shock absorber, damping spring installs in the bumper shock absorber, piston post upper end is passed the bumper shock absorber and is passed through damping spring and stretch out and draw back from top to bottom.

Preferably, the upper part of the piston column is provided with a limiting ring, the limiting ring and the piston column are integrally formed, and the damping spring is arranged below the limiting ring.

Preferably, the surface of the upper end of the piston cylinder is provided with a spring groove, the spring groove is an annular groove, and a spring ring at the lower end of the damping spring is arranged in the spring groove.

Preferably, a screw hole is formed in the spring groove, and a spring head at the lower end of the damping spring is fixed at the screw hole through a screw.

Preferably, the diameter of the movable column is larger than that of the piston column, and the diameters of the inner cavity of the piston cylinder and the upper end opening are matched with the diameters of the movable column and the piston column.

Preferably, the axis of the spring slot and the axis of the piston post are collinear.

Compared with the prior art, the utility model has the beneficial effects that:

1. the piston rod is integrally arranged into a detachable structure, the movable column is installed in the piston cylinder through the threaded fixation of the connecting lug, the reset spring can reduce the vibration pressure of the piston rod of the shock absorber, the service life of the piston rod of the shock absorber is prolonged, meanwhile, the replaceability of parts is realized, and the cost of integral scrapping is reduced;

2. according to the utility model, the spring groove and the screw hole for mounting the damping spring are arranged at the upper end of the cylinder shell, so that the accuracy of the mounting position of the damping spring is ensured, the adaptability and the stability of the damping spring and the telescopic column are improved, and the noise caused by friction during damping is reduced.

Drawings

The utility model is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a cross-sectional view of an embodiment of the present invention;

FIG. 3 is an elongated schematic view of an embodiment of the present invention;

the embodiment of the utility model mainly comprises the following component symbols:

the piston cylinder-1, the cylinder shell-101, the connecting lug-102, the spring groove-103, the screw hole-104, the threaded column-105, the piston column-2, the movable column-201, the telescopic column-202, the limiting ring-203, the reset spring-3 and the damping spring-4.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the present invention.

As shown in fig. 1 and 3, a detachable piston rod of an automobile shock absorber comprises a piston cylinder 1 and a piston column 2, wherein the piston cylinder 1 is composed of two cylinder shells 101 which are installed in half, connecting lugs 102 are arranged at the upper and lower splicing edges of the two sides of the two cylinder shells 101, and the two cylinder shells 101 are in threaded connection through the connecting lugs 102; piston post 2 is including activity post 201 and flexible post 202, activity post 201 is flexible from top to bottom in piston cylinder 1 through reset spring 3, flexible post 202 fixed mounting is in activity post 201 upper end, 1 upper end fixed mounting of piston cylinder has damping spring 4, damping spring 4 cover is in the flexible post 202 outside, be provided with integrated into one piece's screw thread post 105 in the middle of 1 lower extreme of piston cylinder, piston cylinder 1 passes through screw thread post 105 and installs in the bumper shock absorber, damping spring 4 installs in the bumper shock absorber, 2 upper ends of piston post are passed the bumper shock absorber and are passed through damping spring 4 and stretch out and draw back from top to bottom.

The upper portion of the piston column 2 is provided with a limiting ring 203, the limiting ring 203 and the piston column 2 are integrally formed, and the damping spring 4 is installed below the limiting ring 203.

The piston rod is integrally arranged into a detachable structure, the movable column 201 is installed in the piston cylinder 1 through the threaded fixation of the connecting lug 102, the return spring 3 can slow down the vibration pressure of the piston rod of the shock absorber, the service life of the piston rod of the shock absorber is prolonged, meanwhile, the replaceability of parts is realized, and the integral scrapping cost is reduced.

The upper end surface of the piston cylinder 1 is provided with a spring groove 103, the spring groove 103 is a circular groove, and a spring ring at the lower end of the damping spring 4 is arranged in the spring groove 103; a screw hole 104 is formed in the spring groove 103, and a spring head at the lower end of the damping spring 4 is fixed at the screw hole 104 through a screw.

According to the utility model, the spring groove 103 and the screw hole 104 for mounting the damping spring 4 are arranged at the upper end of the cylinder shell 101, so that the accuracy of the mounting position of the damping spring 4 is ensured, the adaptability and stability of the damping spring 4 and the telescopic column 202 are improved, and the noise caused by friction during damping is reduced.

The diameter of the movable column 201 is larger than that of the piston column 2, and the diameters of the inner cavity and the upper end opening of the piston cylinder 1 are matched with the diameters of the movable column 201 and the piston column 2.

The axial lead of the spring groove 103 and the axial lead of the piston post 2 are collinear, so that the telescopic coaxiality stability of the damping spring 4 is ensured, and the telescopic post 202 is prevented from being abraded.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations can be made by the worker in the light of the above teachings without departing from the spirit of the utility model. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a detachable automobile shock absorber ware piston rod which characterized in that: the piston cylinder is composed of two cylinder shells which are installed in half, connecting lugs are arranged at the upper and lower splicing edges of the two sides of the two cylinder shells, and the two cylinder shells are connected through the connecting lugs in a threaded mode; the piston post is including activity post and flexible post, the activity post is flexible from top to bottom in the piston cylinder through reset spring, flexible post fixed mounting is in activity post upper end, piston cylinder upper end fixed mounting has damping spring, the damping spring cover is in flexible post outside, be provided with integrated into one piece's screw thread post in the middle of the piston cylinder lower extreme, the piston cylinder passes through the screw thread post and installs in the bumper shock absorber, damping spring installs in the bumper shock absorber, piston post upper end is passed the bumper shock absorber and is passed through damping spring and stretch out and draw back from top to bottom.

2. The automotive shock absorber piston rod of claim 1, wherein: piston post upper portion is provided with the spacing collar, spacing collar and piston post integrated into one piece, damping spring installs in the spacing collar below.

3. The automotive shock absorber piston rod of claim 2, wherein: the surface of the upper end of the piston cylinder is provided with a spring groove which is an annular groove, and a spring ring at the lower end of the damping spring is arranged in the spring groove.

4. The automotive shock absorber piston rod of claim 3, wherein: and a screw hole is formed in the spring groove, and a spring head at the lower end of the damping spring is fixed at the screw hole through a screw.

5. The automotive shock absorber piston rod of claim 4, wherein: the diameter of the movable column is larger than that of the piston column, and the diameters of the inner cavity of the piston cylinder and the upper end opening are matched with the diameters of the movable column and the piston column.

6. The automotive shock absorber piston rod of claim 5, wherein: the axial lead of the spring groove and the axial lead of the piston column are collinear.