CN211398400U

CN211398400U - Reducing piston shock absorber

Info

Publication number: CN211398400U
Application number: CN201922460966.4U
Authority: CN
Inventors: 万德刚
Original assignee: Yangzhou Deweier Automobile Shock Absorber Co ltd
Current assignee: Yangzhou Deweier Automobile Shock Absorber Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-09-01
Anticipated expiration: 2029-12-31

Abstract

The utility model relates to a bumper shock absorber technical field just discloses a reducing piston bumper shock absorber, including piston rod, director, reducing piston cylinder, stop collar, end position piston and working piston, be located end the interior symmetry of piston rod in the position piston and seted up the working chamber, end and be equipped with the seal groove on the position piston, be equipped with the sealing washer in the seal groove, the arc wall has been seted up to seal groove tank bottom symmetry, sliding connection has the arc clamp plate in the arc wall, the first spring of symmetry fixedly connected with on the working chamber wall, the other end fixedly connected with fly leaf of first spring, fly leaf and working chamber sliding connection, working chamber wall and arc groove tank bottom all are equipped with the through-hole. The utility model discloses be convenient for end a piston and sealing washer and piston rod dismantlement separation, be convenient for change wearing and tearing end a piston and sealing washer, avoid influencing the leakproofness of reducing piston shock absorber.

Description

Reducing piston shock absorber

Technical Field

The utility model relates to a bumper shock absorber technical field especially relates to a reducing piston bumper shock absorber.

Background

With the rapid increase of national economy, the increasingly high requirements of people on riding safety and comfort are taken as important indexes for measuring the comfort of automobiles, the comfort of the automobiles is directly influenced by the quality of the damping performance of the automobile, and the damping performance of the damper has a direct relation with the internal structure of the damper.

In the patent with the publication number of CN209164467U granted by chinese patent, a reducing piston shock absorber is disclosed, in which a stop piston is arranged in the middle of a piston rod, the stop piston moves into a piston cylinder with a reduced diameter, oil is instantly blocked, a certain damping force is additionally generated, and the impact between a guider and a stop collar is reduced, thereby reducing or eliminating the impact abnormal sound of the shock absorber. The reducing piston shock absorber in the patent has the following defects: the stop piston and the sealing ring slide from the position with larger diameter to the position with smaller diameter, so that the stop piston and the sealing ring are inevitably damaged due to friction, the stop piston and the sealing ring are not convenient to detach and separate from the piston rod, the stop piston and the sealing ring are inconvenient to replace, and the sealing performance of the reducing piston shock absorber is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the stop piston and the sealing ring are not convenient for to dismantle and separate from the piston rod in the prior art, and the stop piston and the sealing ring are inconvenient to change and wear, and providing a reducing piston shock absorber.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a reducing piston shock absorber comprises a piston rod, a guider, a reducing piston cylinder, a limiting sleeve, a stopping piston and a working piston, wherein a working cavity is symmetrically formed in the piston rod positioned in the stopping piston, a sealing groove is formed in the stopping piston, a sealing ring is arranged in the sealing groove, an arc-shaped groove is symmetrically formed in the bottom of the sealing groove, an arc-shaped pressing plate is connected in the arc-shaped groove in a sliding manner, a first spring is fixedly connected on the wall of the working cavity in a symmetrical manner, a movable plate is fixedly connected to the other end of the first spring, the movable plate is connected with the working cavity in a sliding manner, through holes are formed in the wall of the working cavity and the bottom of the arc-shaped groove, a fixed rod is fixedly connected to the side wall of the movable plate, which is close to the sealing groove, the other end of the fixed rod penetrates through, the side wall of the movable plate close to the sliding hole is fixedly connected with a movable rod, and the other end of the movable rod penetrates through the sliding hole and extends outwards.

Preferably, the opposite cavity walls of the working cavities are symmetrically provided with sliding grooves, the sliding grooves are connected with sliding blocks in a sliding mode, one opposite ends of the sliding blocks penetrate through the corresponding sliding groove notches and extend into the working cavities, and the sliding blocks are fixedly connected to the movable plate together.

Preferably, the arc-shaped side wall of the arc-shaped pressure plate, which is far away from the working cavity, is symmetrically and fixedly connected with two limiting strips, and the two limiting strips are arranged on two sides of the sealing ring.

Preferably, the bottom of the arc-shaped groove is symmetrically and fixedly connected with a second spring, and the other end of the second spring is fixedly connected to the arc-shaped pressing plate.

Preferably, the piston rod and the variable diameter piston cylinder are both made of stainless steel materials.

Preferably, one end of the movable rod, which is close to the side wall of the variable diameter piston cylinder, is fixedly connected with a push-pull plate.

Compared with the prior art, the utility model provides a reducing piston bumper shock absorber possesses following beneficial effect:

the reducing piston shock absorber comprises a piston rod, a reducing piston cylinder, a stop piston, a working cavity, a sealing groove, a sealing ring, an arc-shaped groove, an arc-shaped pressing plate, a first spring, a movable plate, a fixed rod, a sliding hole and a movable rod, when the stop piston and the sealing ring need to be replaced, the piston rod is taken out of the variable diameter piston cylinder, the movable rod is pressed downwards to drive the movable plate to move and compress the first spring, so that the fixed rod moves and is separated from the through hole to enter the working cavity, the stop piston and the piston rod can be separated, the movable rod is pulled outwards to drive the movable plate and the fixed rod to move, the fixed rod pushes the arc-shaped pressing plate outwards and extrudes the sealing ring, can push away the sealing washer with the sealing washer, with the sealing washer with end a piston separation, be convenient for end a piston and sealing washer and piston rod dismantlement separation, be convenient for change the wearing and tearing end a piston and sealing washer, avoid influencing the leakproofness of reducing piston bumper shock absorber.

The part that does not relate to among the device all is the same with prior art or can adopt prior art to realize, the utility model discloses be convenient for end position piston and sealing washer and piston rod dismantlement separation, be convenient for change wearing and tearing end position piston and sealing washer avoid influencing the leakproofness of reducing piston shock absorber.

Drawings

Fig. 1 is a schematic structural view of a variable diameter piston shock absorber provided by the present invention;

fig. 2 is an enlarged view of a portion a in fig. 1.

In the figure: the device comprises a piston rod 1, a guider 2, a variable diameter piston cylinder 3, a limiting sleeve 4, a stop piston 5, a working piston 6, a working cavity 7, a sealing groove 8, a sealing ring 9, an arc-shaped groove 10, an arc-shaped pressing plate 11, a first spring 12, a movable plate 13, a fixed rod 14, a sliding hole 15, a movable rod 16, a sliding groove 17, a sliding block 18, a limiting strip 19, a second spring 20 and a push-pull plate 21.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and 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 construed as limiting the present invention.

Referring to fig. 1-2, a reducing piston shock absorber comprises a piston rod 1, a guider 2, a reducing piston cylinder 3, a limiting sleeve 4, a stop piston 5 and a working piston 6, wherein a working cavity 7 is symmetrically arranged in the piston rod 1 positioned in the stop piston 5, a sealing groove 8 is arranged on the stop piston 5, a sealing ring 9 is arranged in the sealing groove 8, an arc-shaped groove 10 is symmetrically arranged at the bottom of the sealing groove 8, an arc-shaped pressing plate 11 is slidably connected in the arc-shaped groove 10, a first spring 12 is symmetrically and fixedly connected to the wall of the working cavity 7, the other end of the first spring 12 is fixedly connected with a movable plate 13, the movable plate 13 is slidably connected with the working cavity 7, through holes are arranged on the wall of the working cavity 7 and the bottom of the arc-shaped groove 10, a fixing rod 14 is fixedly connected to the side wall of the movable plate 13 close to the sealing groove 8, a sliding hole 15 is formed in the wall of the working cavity 7, a movable rod 16 is fixedly connected to the side wall of the movable plate 13 close to the sliding hole 15, the other end of the movable rod 16 penetrates through the sliding hole 15 and extends outwards, when the stop piston 5 and the sealing ring 9 need to be replaced, the piston rod 1 is taken out of the reducing piston cylinder 3, the movable rod 16 is pressed downwards to drive the movable plate 13 to move and compress the first spring 12, so that the fixed rod 14 moves and is separated from the through hole to enter the working cavity 7, the stop piston 5 and the piston rod 1 can be separated, the movable rod 16 is pulled outwards to drive the movable plate 13 and the fixed rod 14 to move, the fixed rod 14 pushes the arc-shaped pressing plate 11 outwards and extrudes the sealing ring 9, the sealing ring 9 can be pushed away from the sealing ring 9, the sealing ring 9 and the stop piston 5 are separated, the stop piston 5 and the sealing ring 9 are convenient to be detached from the piston rod 1, and, the influence on the sealing performance of the reducing piston shock absorber is avoided.

The spout 17 has been seted up to the symmetry on the chamber wall that working chamber 7 is in the opposite directions, and sliding connection has slider 18 in the spout 17, and the opposite direction one end of two sliders 18 passes corresponding spout 17 notch and extends to working chamber 7 in, and common fixed connection is on fly leaf 13 for fly leaf 13 is steady slip in working chamber 7.

The arc pressing plate 11 is far away from the limiting strips 19 which are symmetrically and fixedly connected to the arc side wall of the working cavity 7, the two limiting strips 19 are arranged on two sides of the sealing ring 9, the sealing ring 9 can be limited, and the sealing ring 9 is prevented from sliding in the sealing groove 8.

The groove bottom of the arc-shaped groove 10 is symmetrically and fixedly connected with a second spring 20, the other end of the second spring 20 is fixedly connected to the arc-shaped pressing plate 11, and the second spring 20 plays a role in resetting and can pull the arc-shaped pressing plate 11 back to the original position.

The piston rod 1 and the reducing piston cylinder 3 are made of stainless steel materials, so that the piston rod 1 and the reducing piston cylinder 3 are prevented from rusting, and the service life of the piston rod is prevented from being influenced.

One end of the movable rod 16 close to the side wall of the reducing piston cylinder 3 is fixedly connected with a push-pull plate 21, so that the movable rod 16 can be conveniently pressed and pulled.

The utility model discloses in, when ending position piston 5 and sealing washer 9 when needing to be changed, take out piston rod 1 from reducing piston cylinder 3, press movable rod 16 downwards, drive the motion of fly leaf 13, and compress first spring 12, make dead lever 14 motion and break away from in the through-hole gets into working chamber 7, can be with ending position piston 5 and the separation of piston rod 1, outwards stimulate movable rod 16, drive fly leaf 13 and the motion of dead lever 14, dead lever 14 is outwards ejecting with arc clamp plate 11, and extrude sealing washer 9, can push away sealing washer 9 from sealing washer 9, with sealing washer 9 and end position piston 5 separation, be convenient for end position piston 5 and sealing washer 9 and piston rod 1 dismantle the separation, be convenient for change the position piston 5 and the sealing washer 9 of wearing and tearing, avoid influencing the leakproofness of reducing piston bumper shock absorber.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A reducing piston shock absorber comprises a piston rod (1), a guider (2), a reducing piston cylinder (3), a limiting sleeve (4), a stop piston (5) and a working piston (6), and is characterized in that a working cavity (7) is symmetrically formed in the piston rod (1) in the stop piston (5), a sealing groove (8) is formed in the stop piston (5), a sealing ring (9) is arranged in the sealing groove (8), an arc-shaped groove (10) is symmetrically formed in the bottom of the sealing groove (8), an arc-shaped pressing plate (11) is slidably connected in the arc-shaped groove (10), a first spring (12) is symmetrically and fixedly connected to the wall of the working cavity (7), a movable plate (13) is fixedly connected to the other end of the first spring (12), the movable plate (13) is slidably connected with the working cavity (7), and through holes are formed in the wall of the working cavity (7) and the bottom of the arc-shaped groove (10), fixedly connected with dead lever (14) on fly leaf (13) are close to the lateral wall of seal groove (8), the other end of dead lever (14) passes two through-holes and extends to arc wall (10) in, and offsets with arc clamp plate (11) lateral wall, working chamber (7) have seted up on the chamber wall slide opening (15), fly leaf (13) are close to fixedly connected with movable rod (16) on the lateral wall of slide opening (15), the other end of movable rod (16) passes slide opening (15) and outwards extends.

2. The reducing piston shock absorber according to claim 1, wherein the opposite cavity walls of the working cavity (7) are symmetrically provided with sliding grooves (17), the sliding grooves (17) are connected with sliding blocks (18) in a sliding manner, and the opposite ends of the two sliding blocks (18) penetrate through the corresponding notches of the sliding grooves (17) and extend into the working cavity (7), and are jointly and fixedly connected to the movable plate (13).

3. The reducing piston shock absorber as claimed in claim 1, wherein the arc-shaped side wall of the arc-shaped pressure plate (11) far away from the working chamber (7) is symmetrically and fixedly connected with limiting strips (19), and the two limiting strips (19) are arranged on two sides of the sealing ring (9).

4. The reducing piston shock absorber as claimed in claim 1, wherein the bottom of the arc-shaped groove (10) is symmetrically and fixedly connected with a second spring (20), and the other end of the second spring (20) is fixedly connected with the arc-shaped pressure plate (11).

5. The reducer piston shock absorber according to claim 1, wherein the piston rod (1) and the reducer piston cylinder (3) are made of stainless steel material.

6. The reducing piston shock absorber according to claim 1, wherein a push-pull plate (21) is fixedly connected to one end of the movable rod (16) close to the side wall of the reducing piston cylinder (3).