CN208498466U - A kind of double boosting-ratio vacuum boosters - Google Patents
A kind of double boosting-ratio vacuum boosters Download PDFInfo
- Publication number
- CN208498466U CN208498466U CN201820699442.3U CN201820699442U CN208498466U CN 208498466 U CN208498466 U CN 208498466U CN 201820699442 U CN201820699442 U CN 201820699442U CN 208498466 U CN208498466 U CN 208498466U
- Authority
- CN
- China
- Prior art keywords
- double
- ratio
- piston
- vacuum
- braking
- 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 - Fee Related
Links
- 238000006243 chemical reaction Methods 0.000 claims abstract description 22
- 230000007246 mechanism Effects 0.000 claims description 14
- 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 9
- 238000007789 sealing Methods 0.000 claims description 4
- 230000004044 response Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 8
- 230000035484 reaction time Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- 230000007423 decrease Effects 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 230000035945 sensitivity Effects 0.000 abstract description 2
- 230000009471 action Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 206010016256 fatigue Diseases 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 241000628997 Flos Species 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000881 depressing effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 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
- 230000035772 mutation Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Landscapes
- Braking Systems And Boosters (AREA)
Abstract
The utility model relates to a kind of double boosting-ratio vacuum boosters, and brake pedal force can be greatly lowered.When pedal is stepped in underfooting, with the decline of braking deceleration, the feeling of pedal force can be by lightening again.Simultaneously in the shortest time, it improves braking power output and meets braking requirement.Under the effect of double power-assisteds, pedal force is more comfortable, the vacuum booster reaction time is faster, braking efficiency is higher, the utility model is logical to improve the variation of reaction plate forced area, realizes double power-assisted effects, and improving pedal sense reduces brake reaction time, safety coefficient when vehicle braking reaction sensitivity and emergency brake of vehicle is improved, the fatigue problem occurred in frequent braking process is alleviated.
Description
Technical field
The utility model relates to brake system of car fields, and in particular to a kind of double boosting-ratio vacuum boosters.
Background technique
Vacuum booster is a kind of vacuum servo servomechanism installation, is used cooperatively with brake device for car, its working principle is that
When touch on the brake pedal when, push input lever to make to move forward, open air valve port, atmosphere enters atmosphere chamber from the external world, and lives
Shell is due to the pressure difference forward movement between vacuum chamber and atmosphere chamber beyond the Great Wall, and output rod pushes master cylinder piston, thus in master cylinder
It generates power output and realizes automobile brake.
In conventional vacuum booster, booster carries out Linear Amplifer by certain ratio to input power.In pushes pedals,
It has on a reaction force to pedal, when this power is larger, pedal force can be made excessive, lose comfort and there are safety winds
Danger.The design of double assist rates, vehicle is relatively soft in the pedal force in initial deceleration stage, by double assist rate structures, in 0.5g
(" g " herein represents acceleration of gravity, about 9.8m/s2) standardization pedal force and when braking deceleration, in shorter time
It improves braking power output and meets braking requirement, pedal force is small compared with conventional vacuum booster, has effectively evaded brake force deficiency and has stepped on
The excessive risk of plate power brings better pedal sense for driver.
Assist rate cannot be changed when conventional brake, power output cannot quickly increase when emergency braking.In frequent braking, easily
It causes personnel's fatigue risk factor to increase, seriously jeopardizes traffic safety, compared with conventional vacuum booster, double assist rate vacuum are helped
Power device, in braking, faster, braking efficiency is higher for reaction speed, effectively evades above-mentioned 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 double assist rate vacuum servos
Brake pedal force can be greatly lowered in device.When pedal is stepped in underfooting, with the decline of braking deceleration, the sense of pedal force
Feel can be by lightening again.Simultaneously in the shortest time, it improves braking power output and meets braking requirement.Under the effect of double power-assisteds, pedal
Power is more comfortable, and the vacuum booster reaction time, faster braking efficiency was higher.
The purpose of this utility model is achieved through the following technical solutions:
A kind of double boosting-ratio vacuum boosters, 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；
It further include double assist rate mechanisms in piston, and to the manipulation that double assist rate mechanisms are manipulated
The front end of bar, the control stick is connect by a stop pedestal with double assist rate mechanisms.
Wherein, double assist rate mechanisms include outer ratio disk and the interior ratio disk being provided at its inner portion, and further include being arranged
DR spring on the outside of outer ratio disk and the spring base for fixing the DR spring.
Wherein, the stop pedestal is connect with spring base.
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 double assist rate device front ends by a reaction plate and acts on adjustment bar when vacuum booster is activated
Brake response power reached on the brake pedal of vehicle by reaction plate, stop pedestal and control stick.
Preferably, the returning device is the return spring for rear end forces piston shell.
Wherein, the rear shell and piston interface are provided with sealing ring.
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:
Double boosting-ratio vacuum boosters of the utility model, can be greatly lowered brake pedal force.It steps on and tramples when underfooting
When plate, with the decline of braking deceleration, the feeling of pedal force can be by lightening again.Simultaneously in the shortest time, it is defeated to improve braking
Power output meets braking requirement.Under the effect of double power-assisteds, pedal force is more comfortable, and the vacuum booster reaction time, faster braking was imitated
Rate is higher, and the utility model is logical to improve the variation of reaction plate forced area, realizes double power-assisted effects, and improving pedal sense reduces braking
Reaction time improves safety coefficient when vehicle braking reaction sensitivity and emergency brake of vehicle, alleviates frequent braking process
The fatigue problem of middle appearance.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of double boosting-ratio vacuum boosters of the utility model.
Fig. 2 is the enlarged structure schematic diagram in Fig. 1 at C.
Fig. 3 is the performance chart of double boosting-ratio vacuum boosters of the utility model.
Specific embodiment
The utility model is described in detail below in conjunction with drawings and the specific embodiments.
Embodiment 1.
As shown in Figure 1, 2, the present embodiment provides a kind of double boosting-ratio vacuum boosters, comprising:
Shell is closed by front housing 1 and rear shell 8；
And it can be with respect to the piston 11 that shell is axially moveable in shell；
The returning device of 11 front end of piston, front housing 1 is acted on simultaneously；
Positioned at the intracorporal plate device of shell, plate device and piston 11 by enclosure interior space be separated out vacuum chamber and
Atmosphere chamber；
It further include double assist rate mechanisms in piston 11, and to the manipulation that double assist rate mechanisms are manipulated
The front end of bar 14, the control stick 14 is connect by a stop pedestal with double assist rate mechanisms.
Double boosting-ratio vacuum boosters of the utility model, can be greatly lowered brake pedal force.It steps on and tramples when underfooting
When plate, with the decline of braking deceleration, the feeling of pedal force can be by lightening again.Simultaneously in the shortest time, it is defeated to improve braking
Power output meets braking requirement.Under the effect of double power-assisteds, pedal force is more comfortable, and the vacuum booster reaction time, faster braking was imitated
Rate is higher.
As shown in Figure 1, being sealed after booster front housing 1 and rear shell 8 close riveting by sealing ring 12 and piston 11.
Booster is separated into two chambers, respectively atmosphere chamber and vacuum chamber with diaphragm plate 6 by diaphragm 7, before being provided with connection on the front housing 1
The vacuum check valve 5 of chamber and vehicle motor (not regarding out in figure), vacuum source generate when being engine start.
Wherein, double assist rate mechanisms include outer ratio disk 26 and the interior ratio disk 27 being provided at its inner portion, and further include
It is set in the DR spring 25 in outer 26 outside of ratio disk and the spring base 23 for fixing the DR spring 25, it is specific: double to help
Power is assemblied between spring base 23 and outer ratio disk 26 than the DR spring 25 of mechanism, and spring base 23 is assembled with outer ratio disk 26
Afterwards, retaining ring 24 is packed into outer ratio disk 26 and is riveted with spring base 23, and interior ratio disk 27 is packed into outer example disk.
Wherein, the stop pedestal is connect with spring base 23.
It wherein, further include interior and axially displaceable adjustment bar 3,3 one end of adjustment bar and master cylinder positioned at shell
Connection, the other end act on double assist rate device front ends by a reaction plate 10 and act on tune when vacuum booster is activated
The brake response power of whole bar 3 is reached on the brake pedal of vehicle by reaction plate 10, stop pedestal and control stick 14.
Preferably, the returning device is the return spring 4 for rear end forces piston shell 11.
Wherein, the rear shell 8 is provided with sealing ring 12 with 11 interface of piston.
Wherein, the plate device includes the template connecting with piston 11 and diaphragm 7, and diaphragm plate 6, diaphragm 7 are connected to
The periphery of piston 11.Diaphragm 7,6 riveting of diaphragm plate are fixed on piston 11 by way of riveting, by vacuum servo
Device is divided into former and later two chambers, and ante-chamber is vacuum chamber, and back cavity is atmosphere chamber.
Currently existing scheme substantially realizes that unparalleled assist rate mechanism, feel is poor, reaction plate on piston at present
It is short time set, power output leads that pedal force moment is very heavy, and then very light, the mutation of pedal sense easily causes to drive without linear
The psychology for the person of sailing is panic, and there are risks.Double boosting-ratio vacuum boosters of the utility model have assembly convenient, highly reliable
Feature, when reaction plate deforms, be it is linear, in this way early period brake when, pedal just seems that acquirement is compared than milder
Comfortable pedal sense.When this utility model assist rate in the first stage, the ratio of pedal sense performance is milder, with second-order
Smoothly, gently, pedal sense is good for the assist rate linking ratio of section.
Main operational principle is as follows:
When vacuum booster does not work, control stick 14 is pushed into the right extreme position, rubber with atmospheric valve seat 21 by spring 19
Glue valve seat 20 is then pressed on air valve base 21 by spring 13, to close air valve port, and opens vacuum valve port.At this time
The first, second chamber of gas chamber is reinforced through channel A, valve chamber is controlled and channel interconnects, and with big gas barrier.In engine operation
When, two chambers all have certain (identical) vacuum degree.
When just depressing braking springboard, pedal force is applied on control stick 14 through lever amplification and compressed spring 18, together with
The anterior displacement together of air valve base 21, through reaction plate 10 and adjustment bar 3, (adjustment bar 3 is tight with reaction plate 10 under the action of spring 4
Patch) master cylinder first piston is transferred force to, generate (master cylinder does not regard out at front housing screw 2) certain
Pressure simultaneously passes to wheel cylinder.At the same time, rubber valve seat 20 moves forward under the action of spring 13 in company with air valve base 21, with
Vacuum valve seat contacts on piston 11, and closes vacuum valve port, and the first chamber is separated with vacuum source.
As control stick 14 moves on, air valve base 21 leaves rubber valve seat 20, and ambient atmosphere is passed through by dust cover
Filter silk floss 16 and control valve chamber and channel B are filled with the first chamber, active force caused by such two chamber pressure difference of gas chamber, except sub-fraction is used
Come outside the active force of balancing spring 4, remaining major part acts on reaction plate 10 through piston 11, and passes to master cylinder, realizes
Power-assisted effect.
During pedal brake, control stick 14 moves forward, and air valve port of the air through being opened constantly enters first
Chamber, piston 11 then constantly move forward, and when brake pedal rests on a certain position, piston also moves left to air valve therewith
Stop the position that mouth is closed.Vacuum valve port and air valve port are closed at this time, and booster is in equilibrium state, i.e. gas chamber two
The draught head of chamber between the thrust three of control stick 14, maintains equilibrium state with master cylinder hydraulic pressure pressure.
After decontroling brake pedal, control stick 14 and air valve base 21 are pulled to rear immediately by spring 19, make rubber valve seat
20 leave vacuum valve seat, and vacuum booster returns to off working state.
As shown in figure 3, air valve is opened with the anterior displacement of control stick 14, atmosphere enters the first chamber and forms two chambers
Pressure, diaphragm plate 6 pushes piston 11 to move forward under the action of pressure difference, in the reaction force of output push rod, reaction plate
10 are deformed, and compress outer ratio disk 26, deposit gap a1 between outer ratio disk 26 and piston 11 and see Fig. 2, with DR spring
25 compression clearance a1 gradually disappears, and outer ratio disk 26, which moves back, to be leaned on to piston 11.(" slows down the initial stage " refer at this time
At the time of being the 0.05g that vehicle deceleration is more than coastdown degree, driver feels that vehicle " beginning " slows down at this time.) exporting
Such as the assist rate curve of Fig. 3 first segment on performance curve, according to relevant calculation theory, assist rate is I=D1 at this time2/D22。
With the continuous anterior displacement of control stick 14, the deflection of reaction plate 10 is gradually increased, and the first assist rate curve reaches
Inflection point has been arrived, as can be seen that 10 forced area of reaction plate is by the ratio with outer ratio disk 26 from Fig. 3, has been changed into and interior ratio
The ratio of disk 27.Input power is transferred on interior ratio disk 27 through air valve base 20, and under the action of input power, interior ratio disk 27 will
Input power is transferred directly on reaction plate 10, and reaction plate forced area variation at this time is the ratio with interior ratio disk 27, I=D12/
D32.Assist rate becomes larger, so that braking power output transient rise, i.e. vehicle reach maximum deceleration when institute in braking process
The brake force needed.By the variation of assist rate, so that pedal force becomes smaller on the period of second stage assist rate, improve
The comfort of brake pedal obtains higher braking efficiency, improves braking effect in the short time.Alleviate frequent braking process
The fatigue problem of middle appearance.
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 (8)
1. a kind of double boosting-ratio vacuum boosters, 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；
It is characterized in that, further including double assist rate mechanisms in piston, and double assist rate mechanisms are manipulated
Control stick, the front end of the control stick is connect by a stop pedestal with pair assist rate mechanisms.
2. double boosting-ratio vacuum boosters according to claim 1, which is characterized in that double assist rate mechanisms include outer
Ratio disk and the interior ratio disk being provided at its inner portion further include being set in DR spring on the outside of outer ratio disk and for fixing
State the spring base of DR spring.
3. double boosting-ratio vacuum boosters according to claim 2, which is characterized in that the stop pedestal and spring base connect
It connects.
4. double boosting-ratio vacuum boosters according to claim 1, which is characterized in that further include be located at shell in and can edge
The adjustment bar of axial movement, the adjustment bar one end are connect with master cylinder, and the other end acts on double assist rates by a reaction plate
Device front end, when vacuum booster is activated, the brake response power for acting on adjustment bar passes through reaction plate, stop pedestal and behaviour
Vertical pole reaches on the brake pedal of vehicle.
5. double boosting-ratio vacuum boosters according to claim 1, which is characterized in that the returning device is for backward
Side pressure compels the return spring of piston.
6. double boosting-ratio vacuum boosters according to claim 1, which is characterized in that the rear shell and piston interface
Place is provided with sealing ring.
7. double boosting-ratio vacuum boosters according to claim 1, which is characterized in that before being provided with connection on the front housing
The vacuum check valve of chamber and vehicle motor.
8. double boosting-ratio vacuum boosters according to claim 1, which is characterized in that the plate device includes and piston
The template and diaphragm of cage connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820699442.3U CN208498466U (en) | 2018-05-09 | 2018-05-09 | A kind of double boosting-ratio vacuum boosters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820699442.3U CN208498466U (en) | 2018-05-09 | 2018-05-09 | A kind of double boosting-ratio vacuum boosters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208498466U true CN208498466U (en) | 2019-02-15 |
Family
ID=65298448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820699442.3U Expired - Fee Related CN208498466U (en) | 2018-05-09 | 2018-05-09 | A kind of double boosting-ratio vacuum boosters |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208498466U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108622058A (en) * | 2018-05-09 | 2018-10-09 | 广东中博汽车零部件有限公司 | A kind of double boosting-ratio vacuum boosters |
| CN110450765A (en) * | 2019-09-02 | 2019-11-15 | 广州中博制动系统有限公司 | A kind of booster assembly improving pedal sense |
-
2018
- 2018-05-09 CN CN201820699442.3U patent/CN208498466U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108622058A (en) * | 2018-05-09 | 2018-10-09 | 广东中博汽车零部件有限公司 | A kind of double boosting-ratio vacuum boosters |
| CN110450765A (en) * | 2019-09-02 | 2019-11-15 | 广州中博制动系统有限公司 | A kind of booster assembly improving pedal sense |
| CN110450765B (en) * | 2019-09-02 | 2021-08-10 | 广州中博制动系统有限公司 | Booster assembly capable of improving pedal feel |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7921763B2 (en) | Braking control system comprising a force-control simulator | |
| CN208498466U (en) | A kind of double boosting-ratio vacuum boosters | |
| US8240780B1 (en) | Hydraulic brake booster | |
| CN108622058A (en) | A kind of double boosting-ratio vacuum boosters | |
| CN202966284U (en) | Single diaphragm type vacuum booster | |
| CN106218608B (en) | A kind of hydraulic booster | |
| CN205524219U (en) | Become helping hand than vacuum booster , braking system and vehicle | |
| CN103496364B (en) | Pre-brake type vacuum booster and having brake master cylinder assembly thereof | |
| US8210091B2 (en) | Quick booster | |
| CN201002601Y (en) | Penetration type double-diaphragm vacuum booster assembly | |
| CN108819931A (en) | A kind of electric vehicle positive-pressure type brake booster | |
| CN208498467U (en) | A kind of vacuum booster of adjustable idle stroke | |
| GB1502109A (en) | Power servomotor for a vehicle braking system | |
| CN216424375U (en) | Novel electronic hydraulic power assisting device | |
| JPH10505804A (en) | Boost type brake system with hidden stroke and increased safety | |
| CN200948792Y (en) | Vacuum booster | |
| WO2014118803A1 (en) | A vaccum booster | |
| KR20190066520A (en) | Brake Booster For Vehicle | |
| CN108501919A (en) | A kind of vacuum booster of adjustable idle stroke | |
| CN209776414U (en) | Vacuum power-assisted braking system for small-tonnage forklift | |
| CN110962823A (en) | Diaphragm device for double-diaphragm vacuum booster | |
| CN203496881U (en) | Vacuum booster assembly with BA valve | |
| GB1122601A (en) | Fluid pressure servomotor | |
| CN201380843Y (en) | Dual boosting-ratio vacuum booster | |
| JPS6114983B2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210616 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 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |