CN201015992Y - Diaphragm radial packing vehicle vacuum booster - Google Patents
Diaphragm radial packing vehicle vacuum booster Download PDFInfo
- Publication number
- CN201015992Y CN201015992Y CNU2006201730303U CN200620173030U CN201015992Y CN 201015992 Y CN201015992 Y CN 201015992Y CN U2006201730303 U CNU2006201730303 U CN U2006201730303U CN 200620173030 U CN200620173030 U CN 200620173030U CN 201015992 Y CN201015992 Y CN 201015992Y
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- CN
- China
- Prior art keywords
- diaphragm
- annular projection
- front case
- rear housing
- utility
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Braking Systems And Boosters (AREA)
Abstract
The utility model relates to a vehicle vacuum augmenter whose membrane is sealed along the radial direction and belongs to the field of vehicle braking. The utility model comprises a front casing, a back casing, a control valve component and a master cylinder push rod inside. The utility model is characterized in that: the contacting position of the outer circle of the membrane and the inner surface of the back casing has a circle bulge 1 and a circle bulge 2 along the assembling direction. The inner surface contacted with the outer circle of the front casing is provided with a circle bulge 3 which is arranged between the circle bulge 1 and the circle bulge 2. The front casing is riveted with the back casing. The membrane is arranged between the front casing and the back casing. The utility model has the advantages of novel and simple structure, convenient installation and good sealing effect, enough connecting intensity and long service life of products.
Description
Technical field
The utility model belongs to the automobile brake technical field, especially to the improvement of automobile vacuum booster.
Background technology
Vacuum booster is the brake power assist unit in light, the car brake system, is the critical component in the brake system of car.Its principle of work is the vacuum that is produced when utilizing engine petrol work, or the vacuum that vacuum pump produced that diesel motor installed additional, when chaufeur depresses brake pedal, borrow the different thrust that difference of pressure produced of two epitrochoidal chambers in the vacuum booster, amplify brake pedal force by design proportion and promote brake master cylinder piston, braking liquid in the compression brake master cylinder produces hydraulic pressure, and is delivered to the wheel drg and makes brake shoe brake cheek contact and then produce the deceleration of friction drag control vehicle with wheel nave or brake.
Most now vacuum boosters are riveted joint types, and this series products is to connect into an integral body by former and later two housings by the outer rim riveted way, and the treadle effort that chaufeur applies passes to master cylinder by housing.As Fig. 3, Fig. 4, outer rim riveted joint place is by two housings the axial compression of rubber diaphragm to be formed sealing, is separated into two epitrochoidal chambers of ante-chamber and back cavity.Must there be enough gripping powers housing riveted joint back to rubber diaphragm, because rubber diaphragm is subjected to very big pulling force when servo-unit is worked.Diaphragm should guarantee not deviate from also to guarantee sealing from riveted joint.Because axial compression amount can not be too big, too conference makes the diaphragm early failure, the too little impossible again enough big gripping power that produces.Especially rubber diaphragm deliquescing or when following the string when high temperature, low temperature may cause vacuum booster gas leakage.
Summary of the invention
The utility model provides a kind of automobile vacuum booster of diaphragm radial seal, to solve the not good and low problem of Joint strenght of sealing effectiveness between present servo-unit diaphragm and housing.The technical scheme that the utility model is taked is: comprise front case, rear housing, there are control cock parts and master cylinder push rod in inside, it is characterized in that: there are two annular projections one along assembly direction outer garden of diaphragm and rear housing inside face contact position, annular projection two, contacting with the front case cylindrical has an annular projection three on the inside face, the position of annular projection three is at annular projection one, the centre of annular projection two, front case and rear housing riveted joint, diaphragm is positioned between front case and rear housing, and respectively with both leak-tight joints, to the radially generation compression that makes front case and rear housing to diaphragm.
During application, diaphragm is compressed by front case, and the internal protrusion pressurized outwards is out of shape, and replenishes the part between two projectioies in outside, guarantees that two projectioies of outside are identical tightly with the rear housing inside face behind the pressurized.
The utility model has the advantages that: novel structure is simple, because this structure is not to guarantee sealing with the axial compression diaphragm, so the space that forms in the axial direction after the riveted joint of forward and backward housing is very little, diaphragm also can't be deviate from from riveted joint under high temperature or cryogenic conditions.Such structure not only is beneficial to assembling but also good sealing effectiveness is arranged.And also have enough Joint strenghts, the long service life of product.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the structural representation of the utility model diaphragm and forward and backward housing junction.
Fig. 3 is the structure partial scheme drawing of existing servo-unit diaphragm riveted joint place.
Fig. 4 is the structural representation of existing servo-unit diaphragm and forward and backward housing junction.
The specific embodiment
Comprise front case, rear housing, there are control cock parts and master cylinder push rod in inside, it is characterized in that: there are two annular projections 1 along assembly direction, annular projection 2 202 in diaphragm 2 outer gardens and rear housing 1 inside face contact position, contact with front case 3 cylindricals an annular projection 3 203 is arranged on the inside face, the position of annular projection three is in the centre of annular projection one, annular projection two, front case 3 and rear housing 1 riveted joint, diaphragm is positioned between front case and rear housing, and respectively with both leak-tight joints, to making front case and rear housing to the radially generation of diaphragm compression; Just diaphragm 2 is compressed by front case 3, inner annular projection 3 203 pressurizeds outwards are out of shape, replenish the annular projection 1 of outside, the part between the annular projection 2 202, the annular projection 1 of outside, annular projection 2 202 coincide tightly with the rear housing inside face behind the assurance pressurized.
Claims (1)
1. the automobile vacuum booster of a diaphragm radial seal, comprise front case, rear housing, there are control cock parts and master cylinder push rod in inside, it is characterized in that: there are two annular projections one along assembly direction outer garden of diaphragm and rear housing inside face contact position, annular projection two, contacting with the front case cylindrical has an annular projection three on the inside face, the position of annular projection three is at annular projection one, the centre of annular projection two, front case and rear housing riveted joint, diaphragm is positioned between front case and rear housing, and respectively with both leak-tight joints, to the radially generation compression that makes front case and rear housing to diaphragm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201730303U CN201015992Y (en) | 2006-12-27 | 2006-12-27 | Diaphragm radial packing vehicle vacuum booster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201730303U CN201015992Y (en) | 2006-12-27 | 2006-12-27 | Diaphragm radial packing vehicle vacuum booster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201015992Y true CN201015992Y (en) | 2008-02-06 |
Family
ID=39056472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201730303U Expired - Fee Related CN201015992Y (en) | 2006-12-27 | 2006-12-27 | Diaphragm radial packing vehicle vacuum booster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201015992Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111824102A (en) * | 2020-07-24 | 2020-10-27 | 北京汽车集团越野车有限公司 | Vacuum booster and car |
-
2006
- 2006-12-27 CN CNU2006201730303U patent/CN201015992Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111824102A (en) * | 2020-07-24 | 2020-10-27 | 北京汽车集团越野车有限公司 | Vacuum booster and car |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080206 Termination date: 20100127 |