CN201914240U - Driving part for 7+8 penetration type double-membrane mechanical active vacuum booster - Google Patents
Driving part for 7+8 penetration type double-membrane mechanical active vacuum booster Download PDFInfo
- Publication number
- CN201914240U CN201914240U CN2010206415265U CN201020641526U CN201914240U CN 201914240 U CN201914240 U CN 201914240U CN 2010206415265 U CN2010206415265 U CN 2010206415265U CN 201020641526 U CN201020641526 U CN 201020641526U CN 201914240 U CN201914240 U CN 201914240U
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- ball
- sleeve
- cover
- spherical
- vacuum booster
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- Expired - Fee Related
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Abstract
The utility model relates to a driving part for a 7+8 penetration type double-membrane mechanical active vacuum booster and belongs to the field of automobile brakes. A spherical cage is connected with a locking sleeve in a sliding manner; a bearing sleeve is sleeved outside the locking sleeve; the inside of the spherical cage is connected with a spherical sleeve in a sliding manner; a bearing plate is riveted and fixedly connected with the spherical cage; a pressure block spring is positioned in the spherical sleeve; a driving spring is sleeved outside the locking sleeve; a pressure block is connected with the bearing plate in a sliding manner; the spherical sleeve is in gap connection with the pressure block; and a steel ball is positioned between the locking sleeve and the spherical sleeve. The driving part has the advantages of novel and simple structure and low cost, and can be directly embedded in the valve body for fulfilling the driving function.
Description
Technical field
The utility model belongs to the automobile brake field, is the improvement to conventional vacuum booster.
Background technology
Vacuum booster is the critical component in the brake system of car, and it mainly is to make servo-unit produce the power-assisted effect by the driving engine vacuum source.The cardinal principle of vacuum booster is that servo-unit has two chambeies: vacuum chamber and atmosphere chamber, thereby two chambeies produce draught head and realize the power-assisted effect when servo-unit is worked, and by valve body, power-assisted dish, diaphragm, spacer, the second power-assisted dish, secondary diaphragm, middle shell two chambeies are separated.Active vacuum booster itself and conventional vacuum booster difference mainly are to increase a driving mechanism on the basis of conventional vacuum booster structure, when the chaufeur apply the emergency brake, but this mechanism's perception chaufeur depresses the speed of pedal, and the effect by mechanical device respectively, increase the power-assisted effect of vacuum booster rapidly, make and only apply under the situation of less treadle effort at chaufeur, vacuum booster can be exported bigger application force to master brake cylinder, thereby shortens the stopping distance of car load.
Because the product structure of the two diaphragm penetration type servo-units of 7+8 is tight, complicated, the restriction that the adapted space between related components is narrow and small can't be directly embedded into driving mechanism and realize active functions in the valve body as other active product.
Summary of the invention
The utility model provides the driving part of the active vacuum booster of the two diaphragm machineries of a kind of 7+8 penetration type, driving mechanism can't be directly embedded into the problem that realizes active functions in the valve body as other active product to solve.
The technical scheme that the utility model is taked is: ball cage and locking cover sliding block joint, it is outside that supporting sleeve is socketed in the locking cover, the sliding block joint of ball cage inside and ball cover, bearing plate is connected with the riveted and fixed of ball cage, the briquetting spring is positioned at ball cover, and it is outside that drive spring is socketed in the locking cover, briquetting and bearing plate sliding block joint, ball cover is connected with the briquetting gap, and steel ball is between locking cover and ball cover.
The utility model has the advantages that novel structure, simple, cost is low, can be directly embedded into to realize active functions in the valve body.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the utility model conventional brake view;
Fig. 3 is the utility model working state schematic representation;
Fig. 4 is the utility model backhaul view.
The specific embodiment
Ball cage 7 and locking cover 3 sliding block joints, supporting sleeve 1 is socketed in locking cover 3 outsides, the sliding block joint of ball cage 7 inside and ball cover 5, bearing plate 6 is connected with the riveted and fixed of ball cage 7, briquetting spring 9 is positioned at ball cover 5, and drive spring 2 is socketed in locking cover 3 outsides, briquetting 8 and bearing plate 6 sliding block joints, ball cover 5 is connected with briquetting 8 gaps, and steel ball 4 is between locking cover 3 and ball cover 5.
Principle of work
1, conventional brake is seen Fig. 2.
Driving mechanism is inoperative during conventional brake, pedal speed is slow, treadle effort is delivered to the air valve seat by valve rod, making the vacuum valve port close the air valve port opens, the servo-unit back cavity is steadily built and is pressed and produce servo force, the antagonistic force of master cylinder push rod makes reaction plate produce distortion, thus the gap that briquetting is moved right eliminated briquetting and ball cover.Air valve seat application force is delivered to briquetting by ball cover, briquetting and reaction plate effect produce retroactive effect, because the ball cover section of having is faced the reaction plate antagonistic force directly and is directly passed to the sealing valve port coil component by briquetting, ball cover, choker relief valve valve, the locking cover is inoperative to ball cover by the power of steel ball, this has just caused the air valve port to be in all the time under the servo-actuated state of open and close, and the servo-unit back cavity is steadily built pressure.This moment, ball cover moved slowly, and steel ball and ball cover have only very little displacement, and steel ball is subjected to be subjected in the ball cage coupling mechanism force effect of drive spring inoperative, and the BA structure is inoperative.
2, emergency braking is seen Fig. 3.
Driving mechanism works during emergency braking, because of treadle effort speed fast, the servo force that the servo-unit back cavity produces is smaller, it is little that this moment, reaction plate was compressed distortion, move soon because of ball cover again, miles of relative movement is big, thereby ball cover is moved to the left the gap of having eliminated ball cover and briquetting fast, steel ball steel ball under drive spring is done moves down in the ball cage, lock under the effect that is enclosed within drive spring and move right, ball cover can not be moved to right by the steel ball locking, no retroactive effect makes the air valve port can not close and often open, it is very fast that the non-dynamical equilibrium of two valve ports servo-unit back cavity this moment is built pressure, the servo-unit servo force, power output increases fast, makes servo-unit produce big braking force automatically, and does not need chaufeur control just can play the purpose of emergency braking.
3, return is seen Fig. 4.
When the servo-unit backhaul, because the effect of valve rod return spring makes choker relief valve close the vacuum valve port and opens, servo-unit descends backhaul fast in the effect of return spring, locking plate contacts the location and plays effect with the rear housing end face, the locking cover contacts with locking plate because servo-unit returning quickly locking cover bump locking plate causes the locking cover to be moved to the left, thereby steel ball moves up and causes ball cover to return at briquetting upspringing under the spring effect and get back to reference position, drive spring guarantees that steel ball is locked in the ball cage, and the briquetting spring guarantees that ball cover can return.
Claims (1)
1. the driving part of the active vacuum booster of the two diaphragms machineries of a 7+8 penetration type, it is characterized in that: ball cage and locking cover sliding block joint, it is outside that supporting sleeve is socketed in the locking cover, the sliding block joint of ball cage inside and ball cover, bearing plate is connected with the riveted and fixed of ball cage, and the briquetting spring is positioned at ball cover, it is outside that drive spring is socketed in the locking cover, briquetting and bearing plate sliding block joint, ball cover is connected with the briquetting gap, and steel ball is between locking cover and ball cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206415265U CN201914240U (en) | 2010-12-05 | 2010-12-05 | Driving part for 7+8 penetration type double-membrane mechanical active vacuum booster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206415265U CN201914240U (en) | 2010-12-05 | 2010-12-05 | Driving part for 7+8 penetration type double-membrane mechanical active vacuum booster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201914240U true CN201914240U (en) | 2011-08-03 |
Family
ID=44414050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206415265U Expired - Fee Related CN201914240U (en) | 2010-12-05 | 2010-12-05 | Driving part for 7+8 penetration type double-membrane mechanical active vacuum booster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201914240U (en) |
-
2010
- 2010-12-05 CN CN2010206415265U patent/CN201914240U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110803 Termination date: 20161205 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |