Air damper

Abstract

The utility model relates to the technical field of automobile parts, in particular to an air damper. The air damper comprises a shell and a piston rod, the middle of the shell is in a barrel shape, a protruding base is inwards arranged at the top of the shell, a needle valve column is arranged in the middle of the protruding base, the needle valve column is hollow and connected with the inner wall of the shell through an annular base, the needle valve column, the annular base and the shell are integrally formed, a needle valve cover is arranged on the annular base, and a needle valve is arranged in the middle of the bottom of the needle valve cover. The needle valve is inserted into the needle valve column, the needle valve column is sleeved with a spring, a protruding ring body a is arranged outside the needle valve and makes contact with the spring, and a piston rod is arranged at the bottom of the annular base and extends out of the piston cover. The utility model has the beneficial effects that the common needle valve column and the shell are split, the design is relatively troublesome, and the shell, the annular seat and the needle valve column are integrally formed, so that the components are simplified, and the needle valve column is convenient to mount, dismount and maintain.

Description

TECHNICAL FIELD

[0001] The utility model relates to automobile parts technical field, especially air damper. BACKGROUND

[0002] At present, the general existing air damper is composed of shell, pull rod, valve seat, cover, sealing ring and other parts, and the assembly is more, and the structure is relatively complex. SUMMARY

[0003] In order to solve the technical problem of the above structure complexity, the utility model provides air damper.

[0004] The utility model discloses a technical scheme as follows:

[0005] Air damper, including the shell and piston rod, the shell middle is in the shape of a cylinder, the shell top is equipped with the boss inward, the boss middle is equipped with the needle valve post, the needle valve post is hollow, the needle valve post is connected with the shell inner wall through the annular seat, the needle valve post, annular seat and shell are integrally formed, the annular seat is equipped with needle valve cover, the needle valve cover bottom middle is equipped with needle valve, needle valve inserts needle valve post, needle valve post has the spring, needle valve is equipped with the boss body a outward, the boss body a is contacted with spring, the annular seat bottom is equipped with piston rod, and piston rod stretches out from piston cover.

[0006] The inner wall of the boss is provided with a clamping groove, the outer wall of the needle valve cover is provided with a sliding strip, the sliding strip is clamped in the clamping groove, the boss is provided with a buckle hole a, the outer wall of the upper part of the needle valve cover is provided with a buckle a, and the buckle a is buckled on the buckle hole a.

[0007] The outer wall of the upper part of the piston rod is provided with a sealing groove, the sealing groove is provided with a sealing ring, the top end of the piston rod is in contact with the bottom of the boss, the outer wall of the lower part of the boss is in the shape of a step, and the inner wall of the piston rod is in the shape of a step.

[0008] The annular seat is provided with an annular groove, the outer side of the boss body a is provided with a boss body b, the boss body b is inserted into the annular groove, the boss body a and the boss body b exceed the bottom wall body, the length of the boss body b is greater than the length of the boss body a, and the inner side of the boss body a is provided with a socket for inserting the needle valve post.

[0009] The middle of the piston rod is provided with a piston hole, the lower part is provided with a hollow groove, the hollow groove is in the shape of T, the bottom end is provided with a handle, and the handle is communicated with the hollow groove.

[0010] The inner wall of the lower part of the shell is provided with a buckle hole b, and the outer wall of the piston cover is provided with a buckle b, and the buckle b is buckled on the buckle hole b.

[0011] The utility model discloses a technical scheme, novel structure, ingenious and simple design, commonly used needle valve post and shell are split type, and the design is relatively troublesome, shell, annular seat and needle valve post are integrally formed, component is simple, convenient to install, and it is also convenient to disassemble and maintain. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 、 6 is a structural schematic view of the utility model;

[0013] Figure 7 is Figure 6 a structural schematic view of the utility model;

[0014] Figure 2 、 10 is a structural schematic view of the utility model shell;

[0015] Figure 3 is a structural schematic view of the utility model needle valve cover;

[0016] Figure 4 is a structural schematic view of the utility model piston cover;

[0017] Figure 5 is a structural schematic view of the utility model piston rod;

[0018] Figure 8 、 9 is a structural schematic view of the utility model part. DETAILED DESCRIPTION

[0019] The utility model will be further described below in combination with the drawings and examples. EXAMPLE

[0020] As Figure 1 、 2 , 3, 4, 5, 6, 7, 8, 9, 10 shown air damper, including shell 6 and piston rod 1, the shell 6 middle is in the shape of a cylinder, the shell 6 top is provided with the boss inward, the boss middle is provided with needle valve column, needle valve column is hollow, needle valve column is connected with the inner wall of shell 6 through annular seat, needle valve column, annular seat and shell 6 are integrally formed, annular seat is provided with needle valve cover 3, needle valve cover 3 bottom middle is provided with needle valve, needle valve is inserted into needle valve column, needle valve column is provided with spring 4, needle valve is provided with convex ring body a outward, convex ring body a is contacted with spring 4, annular seat bottom is provided with piston rod 1, piston rod 1 is from piston cover 7 and stretches out.

[0021] The inner wall of the boss is provided with clamping groove 11, the outer wall of needle valve cover 3 is provided with slide strip 8, slide strip 8 is clamped in clamping groove 11, the boss is provided with buckle hole a, the outer wall of needle valve cover 3 upper part is provided with buckle a12, buckle a12 is buckled on buckle hole a.

[0022] The outer wall of piston rod 1 upper part is provided with sealing groove, sealing ring 5 is arranged in sealing groove, the top end of piston rod 1 is contacted with the bottom of boss, the outer wall of boss lower part is in the shape of a step, the inner wall of piston rod 1 is in the shape of a step.

[0023] The annular seat is provided with an annular groove, the convex ring body b is provided outside the convex ring body a, the convex ring body b is inserted into the annular groove, the convex ring body a and the convex ring body b exceed the bottom wall body, the length of the convex ring body b is greater than the length of the convex ring body a, and the inside of the convex ring body a is provided with a socket into which the needle valve column is inserted.

[0024] The piston rod is provided with a piston hole in the middle, a hollow groove in the lower part, the hollow groove is T-shaped, a handle at the bottom end, and the handle is communicated with the hollow groove.

[0025] The lower inner wall of the shell is provided with a buckle hole b, and the outer wall of the piston cover is provided with a buckle b which is buckled on the buckle hole b.

[0026] In use, the needle valve column is provided with a convex column at the bottom, the top of the piston rod 1 is provided with a recess in the middle, the convex column is matched with the recess, the inside of the shell 6 and the piston rod 1 form a chamber, the gas pressure in and outside the chamber, the resistance of the movable sealing ring to the inner wall of the shell 6, and the depth of the needle valve inserted into the needle valve column all have certain influences on the damping effect.

[0027] It should be understood that the above description is only a preferred embodiment of the present application, and is not intended to limit the technical scheme of the present application. For those skilled in the art, according to the above description, the number, replacement, transformation or improvement of the technical scheme can be added, replaced, transformed or improved within the spirit and principle of the present application, and all these added, replaced, transformed or improved technical schemes should belong to the protection scope of the appended claims of the present application.

Claims

1. An air damper, comprising a housing (6) and a piston rod (1), characterized in that: The shell (6) is cylindrical in the middle. A protrusion is provided on the top of the shell (6) and a needle valve column is provided in the middle of the protrusion. The needle valve column is hollow and is connected to the inner wall of the shell (6) through an annular seat. The needle valve column, the annular seat and the shell (6) are integrally formed. A needle valve cover (3) is provided on the annular seat. A needle valve is provided in the middle of the bottom of the needle valve cover (3). The needle valve is inserted into the needle valve column. A spring (4) is sleeved on the needle valve column. A convex ring body a is provided outside the needle valve. The convex ring body a is in contact with the spring (4). A piston rod (1) is provided at the bottom of the annular seat. The piston rod (1) extends out from the piston cover (7).

2. The air damper according to claim 1, characterized in that: The inner wall of the protrusion is provided with a slot (11), the outer wall of the needle valve cover (3) is provided with a slide (8), the slide (8) is locked in the slot (11), the protrusion is provided with a buckle hole a, the upper outer wall of the needle valve cover (3) is provided with a buckle a (12), the buckle a (12) is fastened on the buckle hole a.

3. The air damper according to claim 1, characterized in that: The piston rod (1) has a sealing groove on its upper outer wall, and a sealing ring (5) is provided in the sealing groove. The top of the piston rod (1) contacts the bottom of the boss. The lower outer wall of the boss is stepped, and the inner wall of the piston rod (1) is stepped.

4. The air damper according to claim 1, characterized in that: The annular seat is provided with an annular groove, and a convex ring body b is provided on the outside of the convex ring body a. The convex ring body b is inserted into the annular groove. The convex ring body a and the convex ring body b extend beyond the bottom wall. The length of the convex ring body b is greater than the length of the convex ring body a. The inner side of the convex ring body a is provided with a socket for inserting a needle valve column.

5. The air damper according to claim 1, characterized in that: The piston rod (1) has a piston hole in the middle and a hollow groove at the bottom. The hollow groove is T-shaped and has a handle at the bottom. The handle and the hollow groove are connected.

6. The air damper according to claim 1, characterized in that: The lower inner wall of the housing (6) is provided with a buckle hole b, and the outer wall of the piston cover (7) is provided with a buckle b, which is fastened to the buckle hole b.

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