CN202264762U - Fast air intake structure for vacuum booster - Google Patents
Fast air intake structure for vacuum booster Download PDFInfo
- Publication number
- CN202264762U CN202264762U CN2011204244806U CN201120424480U CN202264762U CN 202264762 U CN202264762 U CN 202264762U CN 2011204244806 U CN2011204244806 U CN 2011204244806U CN 201120424480 U CN201120424480 U CN 201120424480U CN 202264762 U CN202264762 U CN 202264762U
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- CN
- China
- Prior art keywords
- vacuum booster
- air
- valve
- air valve
- valve seat
- 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 - Lifetime
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- Braking Systems And Boosters (AREA)
Abstract
The utility model relates to a fast air intake structure for a vacuum booster, and belongs to the field of automobile brake technologies. A rubber valve component and an air valve seat are in spherical sealed connection with each other at the port of an air valve; and the air valve seat is riveted with a valve rod. The utility model has the advantages that the structure is novel; the sealing effect is obvious; and the cost is reduced.
Description
Technical field
The utility model belongs to the automobile brake technical field, refers in particular to 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 steps on 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, the 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.The air valve seat is important parts in the vacuum booster, and its radical function is the effect of servo-unit switch air valve port.Servo-unit work is exactly the alternation switch of air valve port and vacuum valve port basically.Realize dynamical equilibrium.
The choker relief valve valve port of conventional vacuum booster is that the plane of air valve seat planes and seal ring parts relies on the linear sealing mode to form; When brake pedal promotes the valve rod action; Air valve seat and seal ring isolation of components make outside air enter into back cavity, with the vacuum generation pressure reduction of ante-chamber.Play vacuum-assisted effect.During backhaul, the seal band of air valve seat contacts with the seal ring parts.Isolated outside air enters into back cavity.The vacuum valve port is opened simultaneously, and front/back cavity is communicated.Vacuum servo is eliminated.The aperture of atmosphere valve port was little when such vacuum booster was worked.Occur little slit between air valve seat and the rubber valve parts, air draught can produce turbulent flow through little slit, causes high inflow noise.Conventional vacuum booster, the sealing surface of air valve seat is a plane form, and the sealing surface of rubber valve parts also is the seal form on plane, and the servo-unit inflow noise of this structure is higher.Intake efficiency is low, and hysteresis power is bigger than normal.
Summary of the invention
The utility model provides a kind of quick air intake structure of vacuum booster, to solve the big and big problem of hysteresis power of present conventional servo-unit inflow noise.
The technical scheme of the utility model is: sphere is tightly connected at choker relief valve valve port place for rubber valve parts and air valve seat, air valve seat and valve rod riveted joint.
The advantage of the utility model is: novel structure is simple, and sealing effectiveness is obvious, practices thrift cost.
Description of drawings
Fig. 1 is the structural representation of the utility model.
The specific embodiment
Sphere is tightly connected at choker relief valve valve port place with air valve seat 2 for rubber valve parts 1, air valve seat 2 and valve rod 3 riveted joints.
When servo-unit was worked, the opening of air valve port was big, little slit can not occur between air valve seat and the rubber valve parts, eliminated the noise that turbulent air flow produces.
Claims (1)
1. the quick air intake structure of a vacuum booster, it is characterized in that: sphere is tightly connected at choker relief valve valve port place for rubber valve parts and air valve seat, air valve seat and valve rod riveted joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204244806U CN202264762U (en) | 2011-11-01 | 2011-11-01 | Fast air intake structure for vacuum booster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204244806U CN202264762U (en) | 2011-11-01 | 2011-11-01 | Fast air intake structure for vacuum booster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202264762U true CN202264762U (en) | 2012-06-06 |
Family
ID=46155571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204244806U Expired - Lifetime CN202264762U (en) | 2011-11-01 | 2011-11-01 | Fast air intake structure for vacuum booster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202264762U (en) |
-
2011
- 2011-11-01 CN CN2011204244806U patent/CN202264762U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120606 |
|
| CX01 | Expiry of patent term |