CN208498467U - A kind of vacuum booster of adjustable idle stroke - Google Patents
A kind of vacuum booster of adjustable idle stroke Download PDFInfo
- Publication number
- CN208498467U CN208498467U CN201820699477.7U CN201820699477U CN208498467U CN 208498467 U CN208498467 U CN 208498467U CN 201820699477 U CN201820699477 U CN 201820699477U CN 208498467 U CN208498467 U CN 208498467U
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- China
- Prior art keywords
- vacuum
- valve
- piston
- shell
- idle stroke
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- 238000004886 process control Methods 0.000 claims abstract description 8
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 17
- 238000007789 sealing Methods 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 6
- 239000004636 vulcanized rubber Substances 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 2
- 230000004044 response Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 5
- 230000035945 sensitivity Effects 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 4
- 230000000712 assembly Effects 0.000 abstract description 2
- 238000000429 assembly Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 206010039203 Road traffic accident Diseases 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Abstract
The utility model relates to a kind of vacuum booster assemblies applied to brake device for car, more particularly to a kind of vacuum booster of adjustable stroke, the utility model can adjust the opening degree distance of vacuum booster vacuum valve port, so as to by the process control of vehicle braking null in a reasonable range, it is adjustable and meet them to vehicle in the process of moving to the requirement of sensitivity simultaneously according to the demand of different vehicle user.
Description
Technical field
The utility model relates to a kind of vacuum booster assemblies applied to brake device for car, and in particular to a kind of adjustable
Save the vacuum booster of stroke.
Background technique
Vacuum booster is a kind of vacuum servo servomechanism installation, is used cooperatively with the brake apparatus of automobile.Traditional vacuum
When stepping under braking footrest on booster vehicle, one section of empty stroke is had before generating braking.If this trip is too long, can induce
Two kinds of misjudgments occurs in vehicle user of service: the first: takeing for vehicle braking failure, touches on the brake under acceleration and causes promptly to make
It is dynamic, unnecessary injury is caused to passenger on vehicle；Second: takeing for not stepping down in braking footrest, step down in throttle to change
On, cause severe traffic accidents.At the same time, braking idle stroke is grown under the shorter environment of braking distance, is particularly easy to occur
Rear-end collision causes very big security risk.
Utility model content
The purpose of this utility model is that aiming at the problems existing in the prior art, providing a kind of vacuum of adjustable stroke
Booster can adjust the opening degree distance of vacuum booster vacuum valve port, so as to which vehicle braking null process control exists
It is adjustable and meet them vehicle is being travelled in one reasonable range, while according to the demand of different vehicle user
In the process to the requirement of sensitivity.
The purpose of this utility model is achieved through the following technical solutions:
A kind of vacuum booster of adjustable idle stroke, comprising:
Shell is closed by front housing and rear shell；
And it can be with respect to the piston that shell is axially moveable in shell；
The returning device of piston front end, front housing is acted on simultaneously；
Positioned at the intracorporal plate device of shell, enclosure interior space is separated out vacuum chamber and big by plate device and piston
Air cavity；
Control valve system in piston, control valve system enter atmosphere chamber for controlling gas,
The control stick that control valve system is manipulated；
Wherein, control valve system include: connect with control stick and can the stop pedestal that is axially moveable of opposite shell, stop
The rear end of pedestal is atmospheric valve seat；The vacuum valve seat of piston；It can be resisted against the valve circle assembly of atmospheric valve seat and vacuum valve seat,
Atmospheric valve seat and valve circle are always shaped to atmos-valve mouth, and vacuum valve seat and valve circle are always shaped to vacuum valve mouth；It is arranged in piston
The key adjustment device of the opening degree distance for adjusting vacuum valve port on inside groove；When vacuum valve port is closed, vacuum chamber and big
Air cavity isolation；When vacuum valve port is opened, vacuum chamber is communicated with atmosphere chamber；When atmosphere valve port is opened, atmosphere chamber is communicated with the outside world.
Wherein, the key adjustment device includes the adjustment key abutted with the front end of stop pedestal, and for fixing
With the fixation key for supporting the adjustment key, the adjustment key can be come by changing the height of its root vulcanized rubber part
The opening degree distance for adjusting vacuum valve port, thus by the process control of vacuum booster null in a reasonable range.
Wherein, the rear shell and piston interface are provided with guide ring and sealing ring, and sealing ring and key adjustment fill
The contact surface set is the zero-base level for adjusting idle stroke.
It wherein, further include that interior and axially displaceable adjustment bar, the adjustment bar one end and master cylinder connect positioned at shell
It connects, the other end acts on stop pan frontward end by a reaction plate, when vacuum booster is activated, acts on the system of adjustment bar
Dynamic reagency is reached on the brake pedal of vehicle by reaction plate, stop pedestal and control stick.
Further, it is provided on the annular groove of the piston outer wall for adjusting what device was fixed to key
Tight loop.
Preferably, the returning device is the return spring for rear end forces piston shell.
Wherein, the valve circle general assembly is in the axial direction of control stick, be continuously provided with to the back-end valve circle spring, valve bowl,
Support spring and filtering sponge, one end of support spring are abutted with the flange rear end of control stick, the rear end stand of the other end and valve bowl
Terrace abuts, and one end of valve circle spring is abutted with the front end groove of valve bowl, and the other end is abutted with valve circle assembly.
Wherein, the flange of the control stick is provided with the filtering sponge for filling entire piston opening.
Wherein, the vacuum check valve of connection ante-chamber and vehicle motor is provided on the front housing.
Wherein, the plate device includes the template connecting with piston and diaphragm.
Compared with the existing technology, the utility model has the following beneficial effects:
The vacuum booster of the adjustable idle stroke of the utility model, can adjust the opening of vacuum booster vacuum valve port
Spend distance, so as to by the process control of vehicle braking null in a reasonable range, while according to different vehicle user
Demand, it is adjustable and meet them to vehicle in the process of moving to the requirement of sensitivity.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the vacuum booster of the adjustable idle stroke of the utility model.
Fig. 2 is the enlarged diagram of the part A of this Fig. 1.
Fig. 3 is the structural schematic diagram of fixed key.
Fig. 4 is the structural schematic diagram for adjusting key.
Fig. 5 is the structural schematic diagram of tight loop.
Specific embodiment
The utility model is described in detail below in conjunction with drawings and the specific embodiments.
Embodiment 1.
As shown in Figs. 1-5, the present embodiment provides a kind of vacuum boosters of adjustable idle stroke, comprising:
Shell is closed by front housing 30 and rear shell 18；
And it can be with respect to the piston 13 that shell is axially moveable in shell；
The returning device of 13 front end of piston, front housing 30 is acted on simultaneously；
Positioned at the intracorporal plate device of shell, enclosure interior space is separated out vacuum chamber 19 with piston 13 by plate device
And atmosphere chamber 20；
Control valve system in piston 13, control valve system enter atmosphere chamber 20 for controlling gas,
The control stick 17 that control valve system is manipulated；
Wherein, control valve system include: connect with control stick 17 and can the stop pedestal 4 that is axially moveable of opposite shell,
The rear end of stop pedestal 4 is atmospheric valve seat；The vacuum valve seat of piston 13；The valve of atmospheric valve seat and vacuum valve seat can be resisted against
Assembly 10 is enclosed, atmospheric valve seat and valve circle assembly 10 form atmosphere valve port 24, and vacuum valve seat and valve circle assembly 10 form vacuum valve port
16；The key adjustment device of the opening degree distance for adjusting vacuum valve port 16 on 13 inside groove of piston is set；Vacuum
When valve port 16 is closed, vacuum chamber 19 and atmosphere chamber 20 completely cut off；When vacuum valve port 16 is opened, vacuum chamber 19 is communicated with atmosphere chamber 20；
When atmosphere valve port 24 is opened, atmosphere chamber 20 is communicated with the outside world.
By the control valve system, the connection between atmosphere chamber 20 and atmosphere can control, make atmosphere chamber 20 and vacuum chamber
19 two chamber pressure differences change under unbalance and balance two states, and then by the process control of vehicle braking null in a reasonable model
In enclosing.
The vacuum booster of the adjustable idle stroke of the utility model can adjust opening for vacuum booster vacuum valve port 16
Mouth degree distance, so as in a reasonable range, while use the process control of vehicle braking null according to different vehicle
The demand of person, it is adjustable and meet them to vehicle in the process of moving to the requirement of sensitivity.
Wherein, the key adjustment device includes the adjustment key 8 abutted with the front end of stop pedestal 4, and for solid
Fixation key 9 that is fixed and supporting the adjustment key 8, the adjustment key 8 can be by changing the height of its root vulcanized rubber part
Degree, to adjust the opening degree distance of vacuum valve port 16, thus by the process control of vacuum booster null in a reasonable range.
Wherein, the rear shell 18 is provided with guide ring 15 and sealing ring 14 with 13 interface of piston, makes piston
13 peripheries are formed with rear shell 18 to be sealed, and the contact surface of sealing ring 14 and key adjustment device is the zero-base level for adjusting idle stroke.
It wherein, further include that interior and axially displaceable adjustment bar 21,21 one end of adjustment bar and braking are led positioned at shell
Cylinder (not regarding out in figure) connection, the other end acts on 4 front end of stop pedestal by a reaction plate 22, when vacuum booster is activated
When, the brake response power for acting on adjustment bar 21 is stepped on by the braking that reaction plate 22, stop pedestal 4 and control stick 17 reach vehicle
On plate.
Reaction plate 22, adjustment bar 21 are continuously packed into the annular groove on the annular protrusion periphery of 13 front end of piston.
Adjustment bar 21 connects the first piston of unillustrated master cylinder, carries out power output transmitting, under the action of return spring 2, protects
It demonstrate,proves above-mentioned part and is integrally formed with piston 13 and do not fallen off.
Further, it is provided on the annular groove of 13 outer wall of piston for key adjustment device to be fixed
Tight loop 29.
Preferably, the returning device is the return spring 2 for rear end forces piston shell 13, return spring
2 are assemblied in vacuum chamber 19, keep the state of forces piston shell 13 backward, under the limit of adjustment key 8, are maintained at Fig. 1
Shown on off-position, in master cylinder (not regarded out in figure) and booster general assembly, in master cylinder pretightning force
Using under, the first piston of master cylinder starts compressing adjustment bar 21, adjustment bar 21 relative to 13 rearward displacement of piston,
It forces 22 compressive deformation of reaction plate and is formed with the outer surface of boss in piston 13 and sealed.
Wherein, the valve circle assembly 10 is assemblied in the axial direction of control stick 17, to the back-end be continuously provided with valve circle spring 25,
Valve bowl 27, support spring 26 and filtering sponge 28, one end of support spring 26 are abutted with the flange rear end of control stick 17, the other end
It is abutted with the rear end step face of valve bowl 27, one end of valve circle spring 25 is abutted with the front end groove of valve bowl 27, the other end and valve
Assembly 10 is enclosed to abut.
Specifically, when the bulb part of control stick 17 is riveted in the groove of stop pedestal 4, so that support spring 26 is pressed
Contracting, and have the power for making 10 opposing pistons shell 13 of valve circle assembly travel forward；Vacuum valve port 16 is closed at this time, air valve
Mouth 24 is opened, and atmosphere enters atmosphere, and two chamber pressure differences are formed, and vacuum booster starts to launch into working condition.
Wherein, the flange of the control stick 17, which is provided with, fills the filtering sponge 28 that entire piston 13 is open.
Wherein, the vacuum check valve that connection vacuum chamber 19 and vehicle motor are provided on the front housing 30 (does not regard in figure
Out, it is arranged at connector 1), vehicle motor generates vacuum source when starting, and negative pressure is introduced from vacuum check valve.
Wherein, the plate device includes the template 6 connecting with piston 13 and diaphragm 5, and diaphragm plate 6, diaphragm 5 are connected to
The periphery of piston 13.Diaphragm 5,6 riveting of diaphragm plate are fixed on piston 13 by way of riveting, by vacuum servo
Device is divided into former and later two chambers, and ante-chamber is vacuum chamber 19, and back cavity is atmosphere chamber 20；Front housing 30 passes through 5 radial outer edge of diaphragm and rear shell
18 riveting sealings；Master cylinder (not regarding out in figure) connect sealing with the interface of front housing 30；Master cylinder first piston and true
The adjustment bar 21 of empty booster connects, and transmits power output by master cylinder.
When vacuum booster carries out working condition, valve circle assembly 10, which moves forward at vacuum valve port 16, one section of very little
Stroke, that is, vacuum booster idle stroke 11.It will be one section of very long distance multiplied by pedal ratio if this section of distance is too big, this
Section distance is the raw power output of partial birth, and will result in when stepping on brake pedal, which has a trip not brake, will cause vehicle and do not have
There is the false judgment of braking to induce, violent pedal or takes for stepping on wrong braking springboard and changing the mistake stepped in gas pedal
Sentence.
The structure of the vacuum booster of the adjustable idle stroke of the utility model is exactly to design in order to avoid such situation
, structure is using two keys, a kind of a kind of adjusting machine for adjusting key 8, fixed key 9 and a kind of tight loop 29 and forming
Structure, tight loop 29 mainly play fixed function to two kinds of keys, prevent it from falling off from piston 13.
Main operational principle is as follows: piston 13 under the effect of elastic resistance of return spring 2 to 18 mouth movements of rear shell, this
When adjustment 8 head of key rubber position 8a tight against the drag for balancing return spring 2 on sealing ring 14, to piston 13
It is limited, is moving it backward.
Adjust 8 head of key rubber position due to transmitted by sealing ring 14 reaction pressed forwards when, tail portion
9a is withstood on fixed 9 tail portion of key, and fixed key 9 plays a fulcrum to it and uses, and adjustment key 8 is to oppress stop pedestal
4 flange face, so that stop pedestal 4 travels forward.Stop pedestal 4 travels forward, so that valve circle assembly 10 is in valve circle spring 25
It is moved under the action of drag to vacuum valve port 16, the distance of idle stroke 11 is just reduced, and allows for braking to depress in this way stepping on
Stroke reduction is stepped under when generating braking, generates more sensitive braking effect.
The design of this structure improves vacuum booster in the controllability of sensitivity, and according to the actual situation into
Row statistics can lead to the height of change adjustment key 8 to meet the needs of number autoist big absolutely is to automobile brake.To vehicle
Appearance, which is knocked into the back, waits traffic accidents to have one to prevent in advance well.
It should be understood by those ordinary skilled in the art that: the discussion of any of the above embodiment is exemplary only, not
It is intended to imply that the scope of the present disclosure (including claim) is limited to these examples；Under the thinking of the utility model, the above reality
Applying can also be combined between the technical characteristic in example or different embodiments, and there are the utility model as described above
Many other variations of different aspect, for simplicity, they are not provided in details.Therefore, all spirit in the utility model
Within principle, any omission, modification, equivalent replacement, improvement for being made etc. should be included in the protection scope of the utility model
Within.
Claims (10)
1. a kind of vacuum booster of adjustable idle stroke, comprising:
Shell is closed by front housing and rear shell；
And it can be with respect to the piston that shell is axially moveable in shell；
The returning device of piston front end, front housing is acted on simultaneously；
Positioned at the intracorporal plate device of shell, enclosure interior space is separated out vacuum chamber and atmosphere by plate device and piston
Chamber；
Control valve system in piston, control valve system enter atmosphere chamber for controlling gas；
The control stick that control valve system is manipulated；
It is characterized in that, control valve system include: connect with control stick and can the stop pedestal that is axially moveable of opposite shell, only
The rear end of dynamic pedestal is atmospheric valve seat；The vacuum valve seat of piston；The valve circle that atmospheric valve seat and vacuum valve seat can be resisted against is total
At atmospheric valve seat and valve circle are always shaped to atmos-valve mouth, and vacuum valve seat and valve circle are always shaped to vacuum valve mouth；It is arranged outside piston
The key adjustment device of the opening degree distance for adjusting vacuum valve port on shell inside groove；Vacuum valve port close when, vacuum chamber with
Atmosphere chamber isolation；When vacuum valve port is opened, vacuum chamber is communicated with atmosphere chamber；When atmosphere valve port is opened, atmosphere chamber is communicated with the outside world.
2. the vacuum booster of adjustable idle stroke according to claim 1, which is characterized in that the key adjusts device
Including the adjustment key abutted with the front end of stop pedestal, and the fixation key for fixing and supporting the adjustment key,
The adjustment key can by changing the height of its root vulcanized rubber part, to adjust the opening degree distance of vacuum valve port, thus
By the process control of vacuum booster null in a reasonable range.
3. the vacuum booster of adjustable idle stroke according to claim 2, which is characterized in that outside the rear shell and piston
Shell interface is provided with guide ring and sealing ring, and the contact surface that sealing ring and key adjust device is the zero reference for adjusting idle stroke
Position.
4. the vacuum booster of adjustable idle stroke according to claim 1, which is characterized in that further include being located in shell
And axially displaceable adjustment bar, the adjustment bar one end are connect with master cylinder, the other end is acted on only by a reaction plate
Dynamic pan frontward end, when vacuum booster is activated, act on the brake response power of adjustment bar by reaction plate, stop pedestal and
Control stick reaches on the brake pedal of vehicle.
5. the vacuum booster of adjustable idle stroke according to claim 1, which is characterized in that the piston outer wall
Annular groove on be provided with for the tight loop that is fixed of key adjustment device.
6. the vacuum booster of adjustable idle stroke according to claim 1, which is characterized in that the returning device is to use
In the return spring of rear end forces piston shell.
7. the vacuum booster of adjustable idle stroke according to claim 1, which is characterized in that the valve circle general assembly
In the axial direction of control stick, it is continuously provided with valve circle spring, valve bowl, support spring and filtering sponge to the back-end, support spring
One end is abutted with the flange rear end of control stick, and the other end is abutted with the rear end step face of valve bowl, one end of valve circle spring and valve bowl
Front end groove abut, the other end abuts with valve circle assembly.
8. the vacuum booster of adjustable idle stroke according to claim 7, which is characterized in that the flange of the control stick
Place is provided with the filtering sponge for filling entire piston opening.
9. the vacuum booster of adjustable idle stroke according to claim 1, which is characterized in that be provided on the front housing
Connect the vacuum check valve of ante-chamber and vehicle motor.
10. the vacuum booster of adjustable idle stroke according to claim 1, which is characterized in that the plate device packet
Include the template connecting with piston and diaphragm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820699477.7U CN208498467U (en) | 2018-05-09 | 2018-05-09 | A kind of vacuum booster of adjustable idle stroke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820699477.7U CN208498467U (en) | 2018-05-09 | 2018-05-09 | A kind of vacuum booster of adjustable idle stroke |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208498467U true CN208498467U (en) | 2019-02-15 |
Family
ID=65298457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820699477.7U Expired - Fee Related CN208498467U (en) | 2018-05-09 | 2018-05-09 | A kind of vacuum booster of adjustable idle stroke |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208498467U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108501919A (en) * | 2018-05-09 | 2018-09-07 | 广东中博汽车零部件有限公司 | A kind of vacuum booster of adjustable idle stroke |
-
2018
- 2018-05-09 CN CN201820699477.7U patent/CN208498467U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108501919A (en) * | 2018-05-09 | 2018-09-07 | 广东中博汽车零部件有限公司 | A kind of vacuum booster of adjustable idle stroke |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210608 Address after: 510000 No. 10, 108 Hefeng street, Yonghe Economic Zone, Guangzhou economic and Technological Development Zone, Guangzhou, Guangdong Patentee after: GUANGZHOU ZHONGBO BRAKE SYSTEM Co.,Ltd. Address before: 510000 No.10, Hefeng 1st Street, Yonghe Economic Zone, Guangzhou Economic and Technological Development Zone, Guangzhou City, Guangdong Province Patentee before: GUANGDONG ZHONGBO AUTOMOBILE PARTS Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190215 |