CN108501919A - A kind of vacuum booster of adjustable idle stroke - Google Patents
A kind of vacuum booster of adjustable idle stroke Download PDFInfo
- Publication number
- CN108501919A CN108501919A CN201810439634.5A CN201810439634A CN108501919A CN 108501919 A CN108501919 A CN 108501919A CN 201810439634 A CN201810439634 A CN 201810439634A CN 108501919 A CN108501919 A CN 108501919A
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- Prior art keywords
- vacuum
- valve
- piston
- shell
- idle stroke
- Prior art date
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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
- 230000004044 response Effects 0.000 claims description 2
- 230000035945 sensitivity Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 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
- 230000001276 controlling effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000006073 displacement reaction 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
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
- B60T13/46—Vacuum systems
- B60T13/52—Vacuum systems indirect, i.e. vacuum booster units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
- B60T13/46—Vacuum systems
- B60T13/52—Vacuum systems indirect, i.e. vacuum booster units
- B60T13/567—Vacuum systems indirect, i.e. vacuum booster units characterised by constructional features of the casing or by its strengthening or mounting arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
- B60T13/46—Vacuum systems
- B60T13/52—Vacuum systems indirect, i.e. vacuum booster units
- B60T13/569—Vacuum systems indirect, i.e. vacuum booster units characterised by piston details, e.g. construction, mounting of diaphragm
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
- B60T13/46—Vacuum systems
- B60T13/52—Vacuum systems indirect, i.e. vacuum booster units
- B60T13/573—Vacuum systems indirect, i.e. vacuum booster units characterised by reaction devices
- B60T13/577—Vacuum systems indirect, i.e. vacuum booster units characterised by reaction devices using levers
Abstract
The present invention relates to brake device for car technical fields, more particularly to a kind of vacuum booster of adjustable idle stroke, the present invention 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, simultaneously according to the demand of different vehicle user, it can adjust and meet them to vehicle in the process of moving to the requirement of sensitivity.
Description
Technical field
The present invention relates to a kind of vacuum booster assemblies applied to brake device for car, and in particular to a kind of adjustable row
The vacuum booster of journey.
Background technology
Vacuum booster is a kind of vacuum servo servomechanism installation, is used cooperatively with the brake apparatus of automobile.Traditional vacuum
When being stepped under braking footrest on booster vehicle, one section of empty stroke is had before generating braking.If this trip is too long, can induce
There are two kinds of misjudgments in vehicle user of service：The first：Vehicle braking failure is takeed for, touches on the brake under acceleration and causes promptly to make
It is dynamic, unnecessary injury is caused to passenger on vehicle；Second：It takes for not stepping down in braking footrest, throttle is stepped down in 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 prodigious security risk.
Invention content
It is an object of the invention to be directed to problems of the prior art, a kind of vacuum servo of adjustable stroke is provided
Device can adjust the opening degree distance of vacuum booster vacuum valve port, so as to by the process control of vehicle braking null at one
In reasonable range, while according to the demand of different vehicle user, it can adjust and meet them to vehicle in driving process
In requirement to sensitivity.
The purpose of the present invention is achieved through the following technical solutions：
A kind of vacuum booster of adjustable idle stroke, including：
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；
Simultaneously act on piston front end, front housing returning device；
Enclosure interior space is separated out vacuum chamber and big by the plate device in shell, 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 includes：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 is always shaped as atmos-valve mouth with valve circle, and vacuum valve seat is always shaped as vacuum valve mouth with valve circle；It is arranged in piston
The key adjusting apparatus of the opening degree distance for adjusting vacuum valve port on inside groove；When vacuum valve port is closed, vacuum chamber with it is big
Air cavity completely cuts off；When vacuum valve port is opened, vacuum chamber is communicated with atmosphere chamber；When air valve port is opened, atmosphere chamber is communicated with the external world.
Wherein, the key adjusting apparatus 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 of vacuum valve port is adjusted, thus by the process control of vacuum booster null in a reasonable range.
Wherein, the rear shell is provided with guide ring and sealing ring with piston interface, and sealing ring is filled with key adjustment
The contact surface set is the zero-base level for adjusting idle stroke.
Wherein, further include in shell and axially displaceable adjustment bar, which connects with master cylinder
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 by reaction plate, stop pedestal and control stick on the brake pedal of vehicle.
Further, it is provided on the annular groove of the piston outer wall for key adjusting apparatus to be fixed
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 being connect with piston and diaphragm.
Compared with the existing technology, beneficial effects of the present invention are：
The vacuum booster of the adjustable idle stroke of the present invention, can adjust the opening degree of vacuum booster vacuum valve port away from
From, so as to by the process control of vehicle braking null in a reasonable range, while according to the need of different vehicle user
It asks, can adjust and meets them to vehicle in the process of moving to the requirement of sensitivity.
Description of the drawings
Fig. 1 is the structural schematic diagram of the vacuum booster of the adjustable idle stroke of the present invention.
Fig. 2 is the enlarged diagram of the part A of 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 implementation mode
Below in conjunction with drawings and the specific embodiments, the present invention will be described in detail.
Embodiment 1.
As shown in Figs. 1-5, the present embodiment provides a kind of vacuum boosters of adjustable idle stroke, including：
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；
Simultaneously act on 13 front end of piston, front housing 30 returning device；
Enclosure interior space is separated out vacuum chamber 19 by the plate device in shell, plate device with piston 13
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 includes：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 forms air valve port 24 with valve circle assembly 10, and vacuum valve seat forms vacuum valve port with valve circle assembly 10
16；The key adjusting apparatus for the opening degree distance for adjusting vacuum valve port 16 being arranged on 13 inside groove of piston；Vacuum
When valve port 16 is closed, vacuum chamber 19 completely cuts off with atmosphere chamber 20；When vacuum valve port 16 is opened, vacuum chamber 19 is communicated with atmosphere chamber 20；
When air valve port 24 is opened, atmosphere chamber 20 is communicated with the external world.
By the control valve system, the connection between atmosphere chamber 20 and air can be controlled, makes 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 rational model
In enclosing.
The vacuum booster of the adjustable idle stroke of the present invention, can adjust the opening degree of vacuum booster vacuum valve port 16
Distance, so as to by the process control of vehicle braking null in a reasonable range, while according to different vehicle user's
Demand can adjust and meet them to vehicle in the process of moving to the requirement of sensitivity.
Wherein, the key adjusting apparatus 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 adjusting apparatus is the zero-base level for adjusting idle stroke.
Wherein, further include in shell and axially displaceable adjustment bar 21, which leads with braking
Cylinder (not depending on going out in figure) connects, and 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 reached the braking of vehicle by reaction plate 22, stop pedestal 4 and control stick 17 and steps on
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 transmission, 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 the piston for key adjusting apparatus 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 depending on going 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 air enters air, 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
Go out, be 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 being connect 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 depending on going out in figure) connect sealing with the interface of front housing 30；Master cylinder first piston with it is true
The adjustment bar 21 of empty booster connects, and power output is transmitted 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.If this segment distance is too big, it will be one section of very long distance to be multiplied by pedal ratio, this
Segment distance is partial birth life power output, and will result in when stepping on brake pedal, which has a trip not brake, to cause vehicle not have
There is the false judgment of braking to induce, violent pedal or take for steps on wrong braking springboard and changes the mistake stepped in gas pedal
Sentence.
The structure of the vacuum booster of the adjustable idle stroke of the present invention designs in order to avoid such situation,
Structure is to use two keys, a kind of a kind of regulating mechanism for adjusting key 8, fixed key 9 and a kind of tight loop 29 and forming, fastening
Circle 29 mainly plays fixed function to two kinds of keys, prevents 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 key 8 head rubber position 8a tight against the drag of return spring 2 is balanced on sealing ring 14, to piston 13
It is limited, it is made not move backward.
The rubber position on adjustment key 8 head due to transmitted by sealing ring 14 reaction pressed forwards when, tail portion
9a is withstood on 9 tail portion of fixed key, and fixed key 9 plays it at fulcrum 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
It is moved to vacuum valve port 16 under the action of 25 drags, the distance of idle stroke 11 is just reduced, and allows for braking to depress in this way stepping on
Stroke is stepped on under when generating braking to reduce, and generates more sensitive braking effect.
The design of this structure improve vacuum booster sensitivity controllability, and according to actual conditions 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 is knocked into the back, and there are one prevent in advance well for grade traffic accidents.
Those of ordinary skills in the art should understand 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 present invention, above example
Or can also be combined between the technical characteristic in different embodiments, and there are different aspects present invention as described above
Many other variations, in order to it is concise they do not provided in details.Therefore, all within the spirits and principles of the present invention,
Any omission, modification, equivalent replacement, improvement for being made etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of vacuum booster of adjustable idle stroke, including：
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；
Simultaneously act on piston front end, front housing returning device；
Enclosure interior space is separated out vacuum chamber and air by the plate device in shell, plate device with 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 includes：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 is always shaped as atmos-valve mouth with valve circle, and vacuum valve seat is always shaped as vacuum valve mouth with valve circle；It is arranged outside piston
The key adjusting apparatus of the opening degree distance for adjusting vacuum valve port on shell inside groove；Vacuum valve port close when, vacuum chamber with
Atmosphere chamber completely cuts off；When vacuum valve port is opened, vacuum chamber is communicated with atmosphere chamber；When air valve port is opened, atmosphere chamber is communicated with the external world.
2. the vacuum booster of adjustable idle stroke according to claim 1, which is characterized in that the key adjusting apparatus
Include 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, to
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 of sealing ring and key adjusting apparatus be the zero reference of adjustment 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 tight loop for key adjusting apparatus to be fixed.
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 and the valve bowl of valve circle spring
Front end groove abut, the other end is abutted 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 being connect with piston and diaphragm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810439634.5A CN108501919A (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 |
|---|---|---|---|
| CN201810439634.5A CN108501919A (en) | 2018-05-09 | 2018-05-09 | A kind of vacuum booster of adjustable idle stroke |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108501919A true CN108501919A (en) | 2018-09-07 |
Family
ID=63400192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810439634.5A Pending CN108501919A (en) | 2018-05-09 | 2018-05-09 | A kind of vacuum booster of adjustable idle stroke |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108501919A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109173961A (en) * | 2018-09-21 | 2019-01-11 | 浙江工业职业技术学院 | A kind of hydrogen car power standby reactor |
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| US5787788A (en) * | 1994-12-09 | 1998-08-04 | Bosch Systems De Freinage | Booster equipped with an alterable-flowrate additional air intake |
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| CN103496364A (en) * | 2013-09-03 | 2014-01-08 | 广东中博汽车零部件有限公司 | Pre-brake type vacuum booster and belt brake master cylinder assembly thereof |
| CN208498467U (en) * | 2018-05-09 | 2019-02-15 | 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 CN201810439634.5A patent/CN108501919A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5305606A (en) * | 1991-08-16 | 1994-04-26 | Alfred Teves Gmbh | Actuating unit for hydraulic brake systems |
| WO1994007723A1 (en) * | 1992-09-30 | 1994-04-14 | Alliedsignal Europe Services Techniques | Power braking system with a shortened stroke |
| FR2700513A1 (en) * | 1993-01-21 | 1994-07-22 | Alliedsignal Europ Services | Vehicle brake servo with composite reaction |
| US5518305A (en) * | 1993-05-26 | 1996-05-21 | Itt Automotive Europe Gmbh | Vacuum brake power booster |
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