CN205991127U - A kind of type variable Oil-gas Separation single drum shock absorber - Google Patents
A kind of type variable Oil-gas Separation single drum shock absorber Download PDFInfo
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- CN205991127U CN205991127U CN201620994073.1U CN201620994073U CN205991127U CN 205991127 U CN205991127 U CN 205991127U CN 201620994073 U CN201620994073 U CN 201620994073U CN 205991127 U CN205991127 U CN 205991127U
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- working cylinder
- air bag
- piston
- shock absorber
- gas separation
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Abstract
This utility model provides a kind of type variable Oil-gas Separation single drum shock absorber, including working cylinder, piston rod and piston, be marked with damping oil inside described working cylinder it is characterised in that：Also include bottom end cover, air bag and charge valve, described air bag is arranged on described working cylinder inner chamber lower end, described air bag, described working cylinder and described bottom end cover form air storing cavity, described bottom end cover is provided with through hole, described charge valve is connected through described through hole with described inflatable chamber, described air bag includes being fixed on the fixed part of described working cylinder lower end, fit with described working cylinder inner surface setting sticking part and contact site, there is annular projection on described fixed part, described contact site surface is the plane vertical with described piston axis, described bottom end cover includes main part, the sealing fitted with described working cylinder inner surface and cavity volume portion, described cavity volume portion is provided with the annular recess with described fixed part upper annular male cooperation.
Description
Technical field
This utility model is related to the amortisseur in automobile suspension system, and more particularly, to a kind of type variable Oil-gas Separation monotubular subtracts
Shake device.
Background technology
Amortisseur is widely used on automobile, to improve driving comfort.In the suspension of automobile, flexible member
Receive impact and produce vibration, the amortisseur in parallel with flexible member then can be set in suspension, with damping vibrations, improve
The ride comfort driven.Automobile absorber mostly is hydraulic damper, when when between vehicle frame and vehicle bridge due to vibration generation relative motion, subtracts
Piston up-down in shake device, damping oil up and down reciprocatingly flows between two chambeies that piston is separated into, damping oil and damping
Between device cavity wall, and the friction between damping oil forms damping force, the energy of damping vibrations.
Due to the presence of piston rod, amortisseur upper cavity is different with the damping oil mass in cavity of resorption body, when piston rod moves upwards
When dynamic, the damping oil in epicoele body has little time lower chamber is supplemented, and can cause vacuum in cavity of resorption body, causes idle running existing
As damping oil easily produces foamed under high speed operation, and final generation resistance is discontinuous.The use of air filling type shock absorber is exactly to be
Avoid these problems.But the reciprocating motion of floating piston can cause the abrasion of O-ring in Conventional pneumatic formula amortisseur, thus
Produce gap, sealing effectiveness lost efficacy, separating effect is not good, so directly on the one hand can lead to the foamed of damping oil, foamed
Damping oil through piston, damping force arises that obvious decay；On the other hand can lead to amortisseur that idle running occurs.
And for example, Patent Office of the People's Republic of China discloses a CN 204664267 U document, entitled list on the 23rd in September in 2015
Cylinder amortisseur.Including cylinder body and cylinder body activity setting piston assembly it is characterised in that：The inner chamber of described cylinder body fills and subtracts
Shake device oil, the intracavity bottom of cylinder body is provided with air bag, and air bag is the independent sealed inflatable body freely arranging, and described piston assembly includes
Piston and piston rod, piston is connected on the bottom axostylus axostyle of piston rod, and the upper surface of piston is sequentially provided with compression valve from the bottom up
Valve block, compression valve adjust pad and limiting plate, limiting plate upper surface against on the shaft shoulder of piston rod bottom axostylus axostyle, the lower end of piston
Face is sequentially provided with rebuilt valve valve block, rebuilt valve adjust pad, rebuilt valve, rebuilt valve lock washer and locking nut from top to bottom,
The tail end of piston rod bottom axostylus axostyle is provided with riveted holes to be carried out locking nut riveting tightly fixation.This utility model cannot change in air bag
Air pressure, and do not provide the concrete assembling structure of air bag.
Utility model content
The purpose of this utility model is to provide for that a kind of structure is simple, good airproof performance, the air pressure that can change in air bag
Type variable Oil-gas Separation single drum shock absorber.By the cooperation of the fixed part of air bag and bottom end cover cavity volume portion, and there is plane
The contact site of the air bag on surface is realizing this purpose.
In order to reach this purpose, this utility model adopts the following technical scheme that：Including working cylinder and through on working cylinder
The piston rod at end, one end that described piston rod is located within described working cylinder is provided with piston, is marked with damping inside described working cylinder
Oil it is characterised in that：Also include bottom end cover, air bag and charge valve, described air bag is arranged on described working cylinder inner chamber lower end, described
Air bag, described working cylinder and described bottom end cover form air storing cavity, and described bottom end cover is provided with through hole, and described charge valve passes through institute
State through hole to connect with described inflatable chamber, described air bag includes being fixed on the fixed part of described working cylinder lower end and described working cylinder
Inner surface laminating setting sticking part and contact site, described fixed part has annular projection, described contact site surface be with
The vertical plane of described piston axis, described bottom end cover includes the sealing that main part is fitted with described working cylinder inner surface
And cavity volume portion, described cavity volume portion is provided with the annular recess with described fixed part upper annular male cooperation.
Thus, sealing structure is realized in the fixed part of air bag, the cavity volume portion of bottom end cover and the cooperation of working cylinder medial surface, uses
Charge valve can change the air pressure in air bag；The load of damping oil is delivered to fixation via sticking part by the contact site of plane setting
Portion.
As a kind of preferred, between described contact site and described sticking part, it is provided with curved transition sections.
As a kind of preferred, the dead in line of the axis of described annular projection and described piston.
Thus, the vertical load that piston produces when pushing parallel to annular projection axis and stepless action is convex in this ring-type
On rising, compress and make annular projection to produce and expand, and then extrude the surface in bottom end cover cavity volume portion, prevent damping oil from entering in air bag
Portion.
As a kind of preferred, the quantity of described annular projection and annular recess respectively two.
Thus, annular projection and annular recess form separate slot plug-connection structure, can preferably completely cut off in damping oil and air bag
Gas.
As one kind preferably, described main part diameter is less than described sealing diameter, described main part and described working cylinder
Inner side is provided with sealing ring, to realize the sealing to air bag cavity volume portion.
As one kind preferably, described air bag is made up of rubber elastomeric material.
To sum up, this utility model has advantages below：Damping fluid is good with the gas-insulated property in air bag, can change gas
Pressure, and structure is simple, be readily produced assembling.
Brief description
Fig. 1 is a kind of structural representation of embodiment of the present utility model；
Fig. 2 is the partial enlarged drawing at A in Fig. 1.
The label of in figure is as follows：
1. working cylinder, 2. bottom end cover, 21. main parts, 22. sealings, 23. cavity volume portions, 3. piston rod, 4. piston, 5. gas
Capsule, 51. fixed parts, 52. sticking parts, 53. contact sites, 6. charge valve, 7. damping oil.
Specific embodiment
The utility model is described in further detail for middle embodiment below in conjunction with the accompanying drawings.
Of the present utility model a kind of embodiment as shown in Figure 1, this amortisseur includes working cylinder 1 and passes through working cylinder 1
The piston rod 3 of upper end, one end that piston rod 3 is located within described working cylinder 1 is provided with piston 4, is marked with damping oil inside working cylinder 1
7, working cylinder 1 inner chamber is divided into upper cavity and lower chamber by piston 4.Piston 4 is provided with the valve module passing through for damping oil 7, piston
Bar 3 band piston 4 moves back and forth along working cylinder 1 axial direction, and damping oil 7 passes through the valve module on piston 4 in upper and lower cavity
Flowing.
This amortisseur also includes bottom end cover 2, air bag 5 and charge valve 6.As shown in Fig. 2 air bag 5 is arranged on working cylinder 1 inner chamber
Lower end, air bag 5, working cylinder 1 and bottom end cover 2 form air storing cavity, and bottom end cover 2 is provided with through hole, and charge valve 6 passes through this through hole,
In order to change the air pressure of gas storage intracavity.
The fixed part 51 that air bag 5 includes being fixed on working cylinder 1 lower end is fitted with working cylinder 1 medial surface the sticking part of setting
52 and contact site 53, fixed part 51 has annular projection, contact site 53 surface is the plane vertical with piston 4 axis, and connects
It is provided with curved transition sections between contact portion 53 and sticking part 52.Bottom end cover 2 includes the sealing that main part 21 is fitted with cylinder body inner surface
Portion 22 and cavity volume portion 23, cavity volume portion 23 is provided with the annular recess with described fixed part 51 upper annular male cooperation.Ring-type is recessed
Slot cross-section shape is U-shaped, and the annular projection on fixed part 51 is arranged in this U-shaped annular groove.
The axis of annular projection and the dead in line of piston 4, the vertical load that piston 4 produces when pushing is convex parallel to ring-type
The axis rising and stepless action is on this annular projection, this vertical load can make annular projection produce to expand, extruding bottom end cover 2
Cavity volume portion 23 and working cylinder 1 interior side-wall surface, prevent damping oil 7 from entering inside air bag 5.
Annular projection is respectively two with the quantity of annular recess, and now annular projection and annular recess form separate slot and plug together
Structure, can preferably completely cut off the gas in damping oil 7 and air bag 5.
Main part 21 diameter of bottom end cover 2 is less than sealing 22 diameter, is provided with sealing inside main part 21 and working cylinder 1
Circle, to realize the sealing to air bag 5 cavity volume portion 23, in addition, described air bag 5 is made up of rubber elastomeric material.
Described above is only to explain so that those of ordinary skill in the art's can completely implements this to of the present utility model
Scheme, but be not to restriction of the present utility model, those skilled in the art can be as needed after reading this specification
The present embodiment is made does not have the modification of creative contribution, and these are all not creative modifications.But as long as in this practicality
All protected by Patent Law in new right.
Claims (6)
1. a kind of type variable Oil-gas Separation single drum shock absorber, including working cylinder（1）And pass through working cylinder（1）The piston rod of upper end
（3）, described piston rod（3）Positioned at described working cylinder（1）Internal one end is provided with piston（4）, described working cylinder（1）Inside is marked with and subtracts
Shake oil（7）It is characterised in that：Also include bottom end cover（2）, air bag（5）And charge valve（6）, described air bag（5）It is arranged on described work
Make cylinder（1）Inner chamber lower end, described air bag（5）, described working cylinder（1）And described bottom end cover（2）Form air storing cavity, described lower end
Lid（2）It is provided with through hole, described charge valve（6）Through described through hole, described air bag（5）Including being fixed on described working cylinder（1）
The fixed part of lower end（51）, and described working cylinder（1）The sticking part of medial surface laminating setting（52）And contact site（53）, described
Fixed part（51）On have annular projection, described contact site（53）Surface is and described piston（4）The vertical plane of axis, described under
End cap（2）Including main part（21）, and described working cylinder（1）The sealing of inner surface laminating（22）And cavity volume portion（23）,
Described cavity volume portion（23）It is provided with and described fixed part（51）The annular recess of upper annular male cooperation.
2. a kind of type variable Oil-gas Separation single drum shock absorber according to claim 1 it is characterised in that：Described contact site
（53）With described sticking part（52）Between be provided with curved transition sections.
3. a kind of type variable Oil-gas Separation single drum shock absorber according to claim 2 it is characterised in that：Described annular projection
Axis and described piston（4）Dead in line.
4. a kind of type variable Oil-gas Separation single drum shock absorber according to claim 1 it is characterised in that：Described annular projection
It is respectively two with the quantity of annular recess.
5. a kind of type variable Oil-gas Separation single drum shock absorber according to claim 1 it is characterised in that：Described main part
（21）Diameter is less than described sealing（22）Diameter, described main part（21）With described working cylinder（1）Inner side is provided with sealing ring.
6. a kind of type variable Oil-gas Separation single drum shock absorber according to claim 1 it is characterised in that：Described air bag（5）
It is made up of rubber elastomeric material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620994073.1U CN205991127U (en) | 2016-08-31 | 2016-08-31 | A kind of type variable Oil-gas Separation single drum shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620994073.1U CN205991127U (en) | 2016-08-31 | 2016-08-31 | A kind of type variable Oil-gas Separation single drum shock absorber |
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| Publication Number | Publication Date |
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| CN205991127U true CN205991127U (en) | 2017-03-01 |
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ID=58105349
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620994073.1U Active CN205991127U (en) | 2016-08-31 | 2016-08-31 | A kind of type variable Oil-gas Separation single drum shock absorber |
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| CN (1) | CN205991127U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107477129A (en) * | 2017-08-24 | 2017-12-15 | 宁波力减震器有限公司 | Damper with independent air bags |
-
2016
- 2016-08-31 CN CN201620994073.1U patent/CN205991127U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107477129A (en) * | 2017-08-24 | 2017-12-15 | 宁波力减震器有限公司 | Damper with independent air bags |
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