CN213479027U - Piston for dead-pitch durable shock absorber - Google Patents
Piston for dead-pitch durable shock absorber Download PDFInfo
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- CN213479027U CN213479027U CN202022406390.6U CN202022406390U CN213479027U CN 213479027 U CN213479027 U CN 213479027U CN 202022406390 U CN202022406390 U CN 202022406390U CN 213479027 U CN213479027 U CN 213479027U
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- terminal surface
- hole section
- shock absorber
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Abstract
The utility model discloses a high durable piston for bumper shock absorber of silence, including the body, the body includes first terminal surface, second terminal surface, and the second terminal surface indent is equipped with the oil pocket, and the body is still including the oilhole that is used for communicateing first terminal surface and oil pocket, and the oilhole includes round hole section and taper hole section, and the round hole section is close to first terminal surface setting, and the taper hole section is close to the oil pocket setting, and the cross-sectional area of taper hole section is by first terminal surface towards oil pocket direction cross sectional area crescent. The utility model provides a noise reduction, improvement life's high durable piston of bumper shock absorber.
Description
Technical Field
The utility model relates to a vehicle bumper shock absorber technical field, in particular to high durable piston for bumper shock absorber of silence.
Background
When the automobile passes through the uneven road surface, although the shock absorption spring in the shock absorption system can filter the shock of the road surface, the spring can still do reciprocating motion, and the shock absorber is used for inhibiting the spring from jumping back and forth. The structure of the shock absorber is that a piston rod with a piston is inserted into a cylinder, and the cylinder is filled with oil. The piston is provided with a throttling hole, so that the oil in the two parts of space separated by the piston can be supplemented with each other. The working principle of the shock absorber is that when the frame and the axle or the vehicle body and the axle are vibrated to move relatively, the piston in the shock absorber moves up and down, oil in the cavity of the shock absorber repeatedly flows into the other cavity from one cavity through different pores, and at the moment, the friction between the hole wall and the oil and the internal friction between oil molecules form damping force on the vibration, so that the vibration energy of the vehicle is converted into oil heat energy, and then the oil heat energy is absorbed by the shock absorber and dissipated into the atmosphere.
Piston center sets up the oilhole, and in case oilhole inner wall has the burr, fluid will produce the noise from the oilhole backward flow during the bumper shock absorber operation, and the noise is too big when leading to the bumper shock absorber operation, also can increase the wearing and tearing of piston rod or piston simultaneously, and the influence is durable, and generally sinter behind the mould with powder die mould when piston production, and the oilhole can lead to the mould drawing of patterns inconvenient for straight round hole, just influences the life of mould.
Disclosure of Invention
The utility model discloses the technical problem that will solve is: provided is a piston for a silent high-durability shock absorber, which reduces noise and improves the service life.
The utility model provides a technical scheme that above-mentioned problem adopted does: the utility model provides a piston for high durable bumper shock absorber of silence, includes the body, the body includes first terminal surface, second terminal surface, the second terminal surface indent is equipped with the oil pocket, the body still includes the oilhole that is used for communicateing first terminal surface and oil pocket, its characterized in that: the oil hole comprises a circular hole section and a conical hole section, the circular hole section is close to the first end face, the conical hole section is close to the oil cavity, and the cross-sectional area of the conical hole section is gradually increased from the first end face to the cross-sectional area of the oil cavity.
Compared with the prior art, the technical scheme has the advantages that: fluid gets into through straight hole section, then through the oil return of the oilhole of taper hole section, increase oil return circulation prevents that the oilhole burr from producing the abnormal sound when the bumper shock absorber operation, reduces the wearing and tearing that the burr brought simultaneously, increases the life of piston, and the cross-sectional area of taper hole section is increased gradually towards oil pocket direction cross sectional area by first terminal surface, can supply the burr to remove toward the oil pocket on the one hand, and on the other hand, when the piston die mould type, the drawing of patterns of being convenient for improves the life of mould.
Preferably, the included angle between the side wall of the taper hole section and the axis of the body is 3-5 degrees.
Preferably, the body periphery wall is equipped with a plurality of package along the axial and glues the groove, the piston is still including establishing the package film of gluing groove department at the package, the inslot is glued to package film inner wall embedding package, the package film outer wall is parallel the body periphery wall sets up, the first terminal surface of body encloses the indent and is equipped with the cooperation groove, the one end of package film and the lateral wall parallel and level in cooperation groove.
Preferably, the rubber coating groove includes cooperation groove and spacing groove, the cooperation groove is a plurality of and the interval sets up the periphery wall at the body, the spacing groove is one and sets up in the department of being close to the second terminal surface, the degree of depth of spacing groove is greater than the degree of depth of cooperation groove.
Preferably, the included angle between the two side walls of the matching groove is 50-70 degrees, and the included angle between the two side walls of the limiting groove is 20-40 degrees.
Drawings
Fig. 1 is a perspective view of the body structure of the present invention.
Fig. 2 is a schematic view of the overall cross-sectional structure of the present invention.
1. A body; 1.1, a first end face; 1.2, a second end face; 1.3, an oil cavity; 1.4, oil holes; 1.4.1, a round hole section; 1.4.2, a taper hole section; 1.5, a rubber coating groove; 1.5.1, matching grooves; 1.5.2, a limit groove; 2. and (5) wrapping the film.
Detailed Description
As shown in FIGS. 1-2,
the utility model provides a high durable piston for bumper shock absorber of silence, includes body 1, body 1 includes first terminal surface 1.1, second terminal surface 1.2 indent is equipped with oil pocket 1.3, body 1 is still including the oilhole 1.4 that is used for first terminal surface 1.1 of intercommunication and oil pocket 1.3, oilhole 1.4 includes round hole section 1.4.1 and taper hole section 1.4.2, round hole section 1.4.1 is close to first terminal surface 1.1 and sets up, taper hole section 1.4.2 is close to oil pocket 1.3 and sets up, the cross-sectional area of taper hole section 1.4.2 is by first terminal surface 1.1 towards the 1.3 direction cross sectional area crescent of oil pocket.
Wherein, the included angle between the side wall of the taper hole section 1.4.2 and the axis of the body 1 is 2 degrees to 2.5 degrees, and is generally 2.5 degrees.
The outer peripheral wall of the body 1 is provided with a plurality of rubber coating grooves 1.5 along the axial direction, the piston further comprises a rubber coating sheet 2 arranged at the rubber coating groove 1.5, the inner wall of the rubber coating sheet 2 is embedded into the rubber coating groove 1.5, the outer wall of the rubber coating sheet 2 is parallel to the outer peripheral wall of the body 1, a matching groove 1.5.1 is arranged in the outer ring of the first end face 1.1 of the body 1 in an inwards concave mode, one end of the rubber coating sheet 2 is flush with the side wall of the matching groove 1.5.1, rubber coating at the matching groove 1.5.1 is the initial matching position of the piston and the piston wall, the end face of the rubber coating sheet 2 is flush with the side wall of the matching groove 1.5.1, abrasion between the piston side wall and the inner wall of the piston cylinder can.
Wherein, rubber coating groove 1.5 includes cooperation groove 1.5.1 and spacing groove 1.5.2, cooperation groove 1.5.1 is a plurality of and the interval sets up the periphery wall at body 1, spacing groove 1.5.2 is one and sets up and is being close to second terminal surface 1.2 department, spacing groove 1.5.2's degree of depth is greater than the degree of depth of cooperation groove 1.5.1, and cooperation groove 1.5.1 is used for the outer wall cooperation with rubber coating piece 2 and piston in order to be spacing with rubber coating piece 2 and piston, and spacing groove 1.5.2's degree of depth is darker than the degree of depth in cooperation groove 1.5.1 for further inject rubber coating piece 2's position, avoid rubber coating piece 2 relative piston to drop, and spacing groove 1.5.2 sets up and is being close to first terminal surface 1.2 department, for piston and piston cylinder complex farthest end, can prevent rubber coating piece 2 from dropping.
The included angle of the two side walls of the matching groove 1.5.1 is 50-70 degrees, the included angle of the two side walls of the limiting groove 1.5.2 is 20-40 degrees, the smaller the included angle of the side walls of the rubber coating groove 1.5 is, the more difficult the rubber coating piece 2 is to separate from the piston, and the matching reliability of the rubber coating piece 2 can be improved by setting the limiting groove 1.5.2 to be 20-40 degrees.
The foregoing is illustrative of the preferred embodiments of the present invention only, and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to be changed. All changes which come within the scope of the independent claims of the invention are to be embraced within their scope.
Claims (5)
1. The utility model provides a high durable piston of bumper shock absorber of silence, includes body (1), body (1) includes first terminal surface (1.1), second terminal surface (1.2) indent is equipped with oil pocket (1.3), body (1) is still including oilhole (1.4) that are used for communicateing first terminal surface (1.1) and oil pocket (1.3), its characterized in that: oilhole (1.4) include round hole section (1.4.1) and taper hole section (1.4.2), round hole section (1.4.1) are close to first terminal surface (1.1) and set up, taper hole section (1.4.2) are close to oil pocket (1.3) and set up, the cross-sectional area of taper hole section (1.4.2) is by first terminal surface (1.1) towards oil pocket (1.3) direction cross-sectional area crescent.
2. The piston for a silent high-durability shock absorber according to claim 1, wherein: the included angle between the side wall of the taper hole section (1.4.2) and the axis of the body (1) is 2-2.5 degrees.
3. The piston for a silent high-durability shock absorber according to claim 1, wherein: body (1) periphery wall is equipped with a plurality of package along the axial and glues groove (1.5), the piston is still including establishing package film (2) of gluing groove (1.5) department at the package, in package film (2) inner wall embedding package glues groove (1.5), package film (2) outer wall is parallel body (1) periphery wall sets up, the first terminal surface (1.1) the outer lane indent of body (1) is equipped with cooperation groove (1.5.1), the one end of package film (2) and the lateral wall parallel and level of cooperation groove (1.5.1).
4. The piston for a silent high-durability shock absorber according to claim 3, wherein: the glue-coating groove (1.5) comprises a matching groove (1.5.1) and a limiting groove (1.5.2), the matching groove (1.5.1) is a plurality of and is arranged on the peripheral wall of the body (1) at intervals, the limiting groove (1.5.2) is one and is arranged at the position close to the second end face (1.2), and the depth of the limiting groove (1.5.2) is greater than that of the matching groove (1.5.1).
5. The piston for a silent high-durability shock absorber according to claim 4, wherein: the included angle of the two side walls of the matching groove (1.5.1) is 50-70 degrees, and the included angle of the two side walls of the limiting groove (1.5.2) is 20-40 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022406390.6U CN213479027U (en) | 2020-10-26 | 2020-10-26 | Piston for dead-pitch durable shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022406390.6U CN213479027U (en) | 2020-10-26 | 2020-10-26 | Piston for dead-pitch durable shock absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213479027U true CN213479027U (en) | 2021-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022406390.6U Active CN213479027U (en) | 2020-10-26 | 2020-10-26 | Piston for dead-pitch durable shock absorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213479027U (en) |
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2020
- 2020-10-26 CN CN202022406390.6U patent/CN213479027U/en active Active
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