CN2548869Y - Vacuum power assistor with variable force - Google Patents
Vacuum power assistor with variable force Download PDFInfo
- Publication number
- CN2548869Y CN2548869Y CN 02218141 CN02218141U CN2548869Y CN 2548869 Y CN2548869 Y CN 2548869Y CN 02218141 CN02218141 CN 02218141 CN 02218141 U CN02218141 U CN 02218141U CN 2548869 Y CN2548869 Y CN 2548869Y
- Authority
- CN
- China
- Prior art keywords
- jacking block
- piston
- counterbore
- push rod
- reaction plate
- 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 is a vacuum booster with variable power-assisted ratio of an automobile brake system, which mainly includes a shell, a piston, a control valve, a pushing bar, a carrier rod, a feedback disk and a carrier rod. The head end of the piston is provided with two step counter bores, the carrier block is clearance fit with the feedback disk. The power-assisted ratio is changed, while the input force is set, the output force is increased, and the brake efficiency is improved, therefore the rear-end accidents of automobile is reduced.
Description
Technical field
The utility model relates to the vacuum booster of brake system of car technical field, specifically is that a kind of change power-assisted compares vacuum booster.
Prior art
The existing vacuum booster that is used for automobile brake can not change the power-assisted ratio, input force and power output are linear proportional relation, the use braking that automobile is frequent, driver's operation labour intensity is big, easily tired, it two causes brake efficiency to reduce, and phenomenon very easily knocks into the back on the crowded city of running car, express highway, cause traffic accident, the threat to life property safety.
Summary of the invention
In order to reduce the traffic accident that the rear-end collision phenomenon is brought, the utility model provides a kind of vacuum booster that can change the change power-assisted ratio of output after setting input force, makes the braking of automobile point produce different power-assisted ratios with anxious braking, reaches safe driving.
The utility model realizes that the technical conceive scheme of design objective is described below: it includes housing, push rod, control cock, jacking block, reaction plate, push rod, piston, seal ring, pull back spring, housing have fore shell and back cover, and push rod connects control cock, control cock is connected with the contact of jacking block face, jacking block is connected by the pin sheet with piston, the other end of jacking block and reaction plate free-running fit, and reaction plate connects push rod, piston connects housing and pull back spring respectively, and seal ring keeps the sealing of inside and outside chamber of piston and front and rear casing inside and outside.The utility model design-calculated technical characterstic is that piston head end is equipped with two stepped counterbore, reaction plate and jacking block free-running fit.
The utility model becomes power-assisted two stepped counterbore of piston head end design than vacuum booster, jacking block and reaction plate free-running fit, make this servo-unit at same input force, different power outputs is arranged, effectively improve brake efficiency, the input of dynamic test---output characteristic curve shows, at input force between 600N～650N, power output is at 3000N～3500N, help variable force than just bigger variation, increase 30～40% power output than original design servo-unit, improve deceleration and stopping performance, the knock into the back generation of phenomenon that preventing effectively drives a vehicle.
The drawing explanation
Fig. 1 is the utility model topology view.
Fig. 2 is the stepped counterbore view of piston.
The 1-push rod, 2-seal ring, 3-locking plate, 4-rear housing, 5-front case, 6-pull back spring, 7-seal ring, 8-piston, 9-reaction plate, 10-jacking block, 11-control cock, 12-counterbore, 13-push rod, 14-jacking block hole, 15-counterbore.
The specific embodiment
Details are as follows to technology contents of the present utility model and embodiment below in conjunction with accompanying drawing:
The utility model becomes the push rod 1 external brake pedal of power-assisted than vacuum booster, its head end is connected with the axial close-fitting of control cock 11 1 ends, the head end of control cock 11 is with piston 8 pilot hole free-running fits, can move axially, its end face is with 10 contacts of jacking block, jacking block hole 14 free-running fits of jacking block 10 and piston 8, axially left, move right, one gap is arranged between the right side of other end and reaction plate 9, this gap is on stepped counterbore 12 positions of piston, reaction plate 9 can move axially in first step counterbore 13, and the other end of reaction plate 9 connects push rod 13, push rod 13 external brake master cylinder pistons.Piston 8 one ends (right-hand member) make sealing between piston 8 exocoels and the rear housing 2 with rear housing 4 junction attaching seal rings 2, and piston 8 head ends (left end) connect front case 5 by pull back spring 6.Seal ring 7 makes front case 5 and piston 8 bore seal, keeps the sealing in the housing, consults Fig. 1.Piston 8 structures of the present utility model as shown in Figure 2, its head end is processed with counterbore 15,12 and jacking block hole 14,9 movable cooperations of counterbore 15 and reaction plate, the diameter of counterbore 12 is less than counterbore 15, greater than jacking block hole 14, jacking block can be axially left and right mobile in jacking block hole 14.
This servo-unit is when operating mode, push rod 1 reach, drive control cock 11 and push jacking block 10 left, locking plate 3 connects control cock 11 and piston 8, and meanwhile, piston 8 also is moved to the left, jacking block 10 end faces move past and counterbore 12 between the space, promote reaction plate 9,, realize automobile brake up to making 13 pairs of master cylinder piston effects of push rod.During brake off, pull back spring 6 promotes piston 8 and control cock 11 moves to right, and this servo-unit recovers the initial position, and the gap between jacking block 10 and the reaction plate 9 is the height of the counterbore 12 of piston.
Claims (3)
1, a kind of change power-assisted is than vacuum booster, and it includes housing, push rod, brake activation valve, jacking block, reaction plate, push rod has piston, push rod connects brake activation valve, and brake activation valve contacts with the jacking block face, and jacking block and piston join, the other end contacts with the feedback card, reaction plate connects push rod, it is characterized in that piston head end is equipped with two stepped counterbore (15) and (12), reaction plate (9) and jacking block (10) free-running fit.
2, change power-assisted according to claim 1 is than vacuum booster, and the diameter that it is characterized in that counterbore (12) is less than counterbore (15), greater than jacking block hole (14).
3, change power-assisted according to claim 1 is characterized in that than vacuum booster the gap between jacking block (10) and the reaction plate (9) is the height of counterbore (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02218141 CN2548869Y (en) | 2002-06-11 | 2002-06-11 | Vacuum power assistor with variable force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02218141 CN2548869Y (en) | 2002-06-11 | 2002-06-11 | Vacuum power assistor with variable force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2548869Y true CN2548869Y (en) | 2003-05-07 |
Family
ID=33696839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02218141 Expired - Lifetime CN2548869Y (en) | 2002-06-11 | 2002-06-11 | Vacuum power assistor with variable force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2548869Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100404337C (en) * | 2004-02-06 | 2008-07-23 | 张文建 | Automobile hydraulic booster |
| CN101151183B (en) * | 2005-03-30 | 2010-11-03 | 博世株式会社 | Fluid pressure booster |
| CN108791255A (en) * | 2018-07-17 | 2018-11-13 | 广东中博汽车零部件有限公司 | A kind of hydraulic booster assembly apparatus |
| CN109747614A (en) * | 2017-11-07 | 2019-05-14 | 株式会社万都 | A kind of vacuum booster assembly |
-
2002
- 2002-06-11 CN CN 02218141 patent/CN2548869Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100404337C (en) * | 2004-02-06 | 2008-07-23 | 张文建 | Automobile hydraulic booster |
| CN101151183B (en) * | 2005-03-30 | 2010-11-03 | 博世株式会社 | Fluid pressure booster |
| CN109747614A (en) * | 2017-11-07 | 2019-05-14 | 株式会社万都 | A kind of vacuum booster assembly |
| CN108791255A (en) * | 2018-07-17 | 2018-11-13 | 广东中博汽车零部件有限公司 | A kind of hydraulic booster assembly apparatus |
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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 | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20120611 Granted publication date: 20030507 |