CN106627549A - Electric boost braking device - Google Patents
Electric boost braking device Download PDFInfo
- Publication number
- CN106627549A CN106627549A CN201611085450.0A CN201611085450A CN106627549A CN 106627549 A CN106627549 A CN 106627549A CN 201611085450 A CN201611085450 A CN 201611085450A CN 106627549 A CN106627549 A CN 106627549A
- Authority
- CN
- China
- Prior art keywords
- treadle
- sliding sleeve
- power
- brake pump
- assembly
- 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.)
- Granted
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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
- B60T13/74—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 electrical assistance or drive
- B60T13/745—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 electrical assistance or drive acting on a hydraulic system, e.g. a master cylinder
-
- 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
- B60T7/00—Brake-action initiating means
- B60T7/02—Brake-action initiating means for personal initiation
- B60T7/04—Brake-action initiating means for personal initiation foot actuated
- B60T7/06—Disposition of pedal
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Braking Elements And Transmission Devices (AREA)
- Braking Systems And Boosters (AREA)
Abstract
The invention discloses an electric boost braking device which comprises a boost cylinder body, a foot bar assembly, a foot bar reset spring, an electric booster and a brake pump assembly. A brake pump ejector rod used for receiving braking force is arranged on the brake pump assembly. The electric booster comprises an electric power assembly and a boost sliding sleeve, wherein the boost sliding sleeve is slidably arranged in the boost cylinder body, and sliding driving force of the boost sliding sleeve is provided by the electric power assembly. The boost sliding sleeve is in ejection fit with the brake pump ejector rod. The foot bar reset spring is arranged in an axial through hole and elastically connected with the head end of the foot bar assembly in a resettable mode. In the process that the head end of the foot bar assembly slides towards the brake pump ejector rod in the axial direction, the head end of the foot bar assembly sequentially penetrates through a positioning pin through hole and the outer end of the axial through hole in the boost sliding sleeve and acts on the brake pump ejector rod in an ejecting mode. The electric boost braking device has the advantages that the structure arrangement is reasonable, and the foot car braking force and the electric boost braking force are decoupled by each other.
Description
Technical field
The present invention relates to a kind of automobile fitting brake component, specifically refers to electric booster braking device, can be used for electric automobile, mix
Close the fields such as power vehicle, pilotless automobile or intelligent driving automobile.
Background technology
The brakes of traditional combustion engine automobile assists driver to produce enough systems using vacuum booster unit mostly
Power, and vacuum source comes from engine or oil-sealed rotary pump.For new-energy automobile（Fuel cell car and pure electric vehicle）
For, brake boost is provided to provide vacuum power source without engine, the brake force only by produced by manpower is to expire
The demand of sufficient service brake.Electric booster braking device can be very good to meet this demand.
In recent years, Ge great automobile and parts manufacturer had released one after another similar EHB.By retrieval,
Company of German Bosch is proposed brand-new EHB on the basis of ESP HEV brakes, referring to Chinese special
Sharp publication number CN103818371A.The structure of the EHB includes pedal simulator, Electric booster, braking
The mechanisms such as pump assembly, but there is problems with it：
Non-decoupling between pedal simulator and Electric booster, i.e. the driving force and Electric booster of pedal simulator treadle
Driving force intercouple, while acting on the brake pump push rod of brake pump assembly.In the motor or motor of Electric booster
During the mechanisms fail of output transmission, the power-assisted failure of Electric booster, driver can only pass through pushes pedals simulator
The mode of treadle is braked come the brake pump push rod for driving brake pump assembly.And due to pedal simulator and Electric booster
Between be non-decoupling, the pedal force of driver also needs to drive the mechanisms such as motor of Electric booster to be rotated simultaneously, and by
In Electric booster motor in order to realize higher power-assisted effect, it is all the setting of high transmission output ratio, and back through
The pedal force reverse drive motor of driver, will be extremely difficult, therefore, cause in Electric booster failure, using driver
Pedal force go braking not only response speed be low, and it is big to brake difficulty, reduces vehicle safety.
The content of the invention
The invention aims to overcome the shortcoming and defect that prior art is present, and a kind of structure setting is provided and is closed
The electric booster braking device that reason, treadle brake force and electric booster braking power are mutually decoupled.
For achieving the above object, the technical scheme is that and include power-assisted cylinder body, treadle assembly, treadle reset bullet
Spring, Electric booster and brake pump assembly, are provided with the brake pump push rod for receiving brake force on described brake pump assembly,
Electric booster includes that electric-powered assembly, sliding are arranged in servo-cylinder body and provide sliding driving force by electric-powered assembly
Power-assisted sliding sleeve, power-assisted sliding sleeve and the ejection of brake pump push rod coordinate,
Axially extending bore is provided with power-assisted sliding sleeve, guiding slot port is provided with the outer wall of power-assisted sliding sleeve, described treadle assembly is slided
Shifting is arranged in the axially extending bore in power-assisted sliding sleeve, treadle back-moving spring be arranged in axially extending bore and with the head end of treadle assembly
Elastic reset couples, and the back-moving spring being inserted into by guiding slot port in axially extending bore is further fixedly arranged on the power-assisted cylinder body
Alignment pin, the outer end elastic spacing of described treadle back-moving spring is supported on back-moving spring alignment pin, and power-assisted sliding sleeve passes through
Its guiding slot port does axial slip cooperation with back-moving spring alignment pin, is provided with back-moving spring alignment pin and is available for treadle assembly
Head end axially across alignment pin through hole, the head end of described treadle assembly is axially to brake pump push rod direction slipping
In sequentially pass through the outer end of axially extending bore in alignment pin through hole and power-assisted sliding sleeve and ejection is acted on brake pump push rod.
By this setting, treadle assembly is acted on into the transmission process of brake pump push rod and Electric booster is slided by power-assisted
Set acts on the transmission process of brake pump push rod and mutually decouples in setting, and the structure setting, thus, in braking, it is electronic
Booster first applies brake force in brake pump push rod by power-assisted sliding sleeve first, and promotes brake pump push rod to make piston movement, makes
Brake pump assembly output brake pressure oil is rotated, when there is Electric booster failure, then the head end of treadle assembly
The outer end and ejection for sequentially passing through the axially extending bore in alignment pin through hole and power-assisted sliding sleeve is acted on brake pump push rod, is carried out
Pedal brake, and because its pedal brake and electric booster braking are mutually decoupled, pedal brake dynamic braking response is fast, brake force will
Ask low, improve the security of vehicle braking.
Further arrange is that described electric-powered assembly includes motor and the few teeth difference with motor output shaft linkage
Reductor.By this setting, dynamic retarding output is carried out preferably by few teeth difference reductor, the reductor can obtain bigger
Output gearratio.And because the above-mentioned decoupling of the application is arranged, the few teeth difference that can arrange this big output gearratio is slowed down
Machine, is braked power output, and without the need for considering that treadle assembly cannot carry out asking for footbrake because of its electric boosted failure
Topic.
It is that gear shaft is linkedly set with the output shaft of described few teeth difference reductor further to arrange, and described power-assisted is slided
The outer wall side of set is provided with the driving rack being connected with gear spindle drive, and the outer wall of described power-assisted sliding sleeve is relative to driving cog
It is smooth spigot surface on the opposite side of bar side, rotates in described servo-cylinder body and be provided with roller bearing, the roller bearing and power-assisted
The smooth spigot surface of sliding sleeve rolls connection and coordinates.
By this setting, few teeth difference reductor only needs to be driven power-assisted sliding sleeve by gear shaft, and opposite side is by rolling
Axle carries out rolling support, compared to two gear shaft driving structures of prior art, for assembly precision requires low, stable transmission
Property is good, and reduces processing cost.
It is that described treadle back-moving spring is variable rate spring further to arrange, and the stiffness coefficient of the variable rate spring is from stepping on
One end of bar back-moving spring correspondence treadle assembly to corresponding one end of back-moving spring alignment pin is gradually incremented by setting.By originally setting
Put, treadle back-moving spring for providing the analog feedback power of footbrake to driver, and leads to when treadle assembly carries out foot-operated
This setting variable rate spring is crossed, foot-operated feedback force can be preferably provided, simulate the validity of orthodox car footbrake.
Further setting is that the side of described treadle back-moving spring correspondence back-moving spring alignment pin is provided with spring housing, should
The outer end limited support of spring housing is positioned at the inner of back-moving spring alignment pin, the centrally disposed confession treadle assembly head of the spring housing
Hold through spring housing centre bore.By this setting, the convenient outer end to treadle back-moving spring is positioned and is supported, and structure sets
Meter is reasonable.
It is that described brake pump assembly includes twin-stage Cylinder for Parallel Connection further to arrange, and brake pump top rod driving is arranged at
The input of twin-stage Cylinder for Parallel Connection.
Further setting is that the input of described brake pump push rod is linkedly set with brake pump push rod input linkage board, institute
The axial outer end face ejection of the power-assisted sliding sleeve stated is supported on brake pump push rod input linkage board, and the input linkage of brake pump push rod
The center of plate is fixedly installed the cushion pad coordinated with the head end ejection of treadle assembly.By this setting so that power-assisted sliding sleeve
The head end of the drive mechanism and pedal assembly that act on brake pump push rod acts on the drive mechanism of brake pump push rod and is mutually arranged
Without interruption, it is rationally distributed, stable transmission.
Further arrange is that described treadle assembly includes treadle, treadle linkage set and treadle set, described treadle linkage
Set is fixedly installed in the input that treadle covers, and treadle is fixed and is inserted in treadle linkage set, the outer wall that described treadle covers
On be arranged with the damping sleeve coordinated with the axially extending bore sliding of power-assisted sliding sleeve.By this setting so that treadle assembly is slided in power-assisted
Sliding in set has more preferable damping force, improves foot-operated feedback force-responsive.
In sum, it is an advantage of the invention that：Reasonable in design, stable transmission reliability, and treadle brake force and electricity
Dynamic power brake power is mutually decoupled, and pedal brake dynamic braking response is fast, and required braking force is low, improves the safety of vehicle braking
Property.
The present invention is described further with reference to specification drawings and specific embodiments.
Description of the drawings
Fig. 1 specific embodiment of the invention structural representations；
Fig. 2 is the A-A sectional views of Fig. 1；
Fig. 3 is the B-B sectional views of Fig. 1；
Fig. 4 is the side view of power-assisted sliding sleeve；
Fig. 5 is the top view of power-assisted sliding sleeve；
Fig. 6 is partial structural diagram of the present invention；
Fig. 7 is the decomposing schematic representation of Fig. 6；
Fig. 8 is the view sub-anatomy of Fig. 6.
Specific embodiment
The present invention is specifically described below by embodiment, is served only for being further described the present invention, no
It is understood that for limiting the scope of the present invention, the technician in the field can be according to the content of foregoing invention to the present invention
Make some nonessential modifications and adaptations.
The specific embodiment of the invention as shown in figures 1-8, include power-assisted cylinder body 1, treadle assembly 2, treadle reset bullet
Spring 3, Electric booster 4 and brake pump assembly 5, are provided with the brake pump for receiving brake force on described brake pump assembly 5
Push rod 51, Electric booster 4 includes that electric-powered assembly, sliding are arranged in power-assisted cylinder body 1 and are provided by electric-powered assembly
The power-assisted sliding sleeve 41 of sliding driving force, the electric-powered assembly described in the present embodiment includes motor 42 and exports with motor
The few teeth difference reductor 43 of axle linkage, few teeth difference reductor 43 is the ripe gear drive of this area, and the present embodiment is no longer
It is described in detail, in addition, power-assisted sliding sleeve 41 coordinates with the ejection of brake pump push rod 51, is provided with described power-assisted sliding sleeve 41 axially logical
Hole 411, is provided with guiding slot port 412 on the outer wall of power-assisted sliding sleeve 41, the front end sliding of described treadle assembly 2 is arranged at power-assisted
In axially extending bore 411 in sliding sleeve 41, treadle back-moving spring 3 be arranged in axially extending bore 411 and with the head end 21 of treadle assembly 2
Elastic reset couples, and the reset being inserted into by guiding slot port 412 in axially extending bore is further fixedly arranged on the power-assisted cylinder body 1
Spring holder 11, the outer end elastic spacing of described treadle back-moving spring 3 is supported on back-moving spring alignment pin 11, and power-assisted
Sliding sleeve 41 does axial slip cooperation by its guiding slot port 412 and back-moving spring alignment pin 11, sets on back-moving spring alignment pin 11
Be equipped be available for the head end of treadle assembly axially across alignment pin through hole 111, the head end of described treadle assembly 2 axially to
Axially extending bore 411 in alignment pin through hole 111 and power-assisted sliding sleeve 41 is sequentially passed through in the direction slipping of brake pump push rod 51
Simultaneously ejection is acted on brake pump push rod 51 for outer end.
Gear shaft 44 is linkedly set with the output shaft of the few teeth difference reductor 43 described in the present embodiment, described power-assisted is slided
The outer wall side of set 41 is provided with the driving rack 413 being connected with gear spindle drive, and the outer wall of described power-assisted sliding sleeve 41 is relative
It is smooth spigot surface 414 on the opposite side of driving rack side, rotates in described power-assisted cylinder body 1 and be provided with roller bearing
12, the roller bearing 12 is rolled with the smooth spigot surface 414 of power-assisted sliding sleeve and couples cooperation.
Treadle back-moving spring 3 described in the present embodiment is variable rate spring, and the stiffness coefficient of the variable rate spring is from treadle
One end of back-moving spring correspondence treadle assembly to corresponding one end of back-moving spring alignment pin is gradually incremented by setting.
In addition, the side of the corresponding back-moving spring alignment pin 11 of described treadle back-moving spring 3 is provided with spring housing 12, the bullet
The outer end limited support of spring set 12 is positioned at the inner of back-moving spring alignment pin 11, and the centrally disposed confession treadle of the spring housing 12 is total
Into the spring housing centre bore 121 that head end is passed through.
Preferably, the brake pump assembly 5 described in the present embodiment includes twin-stage Cylinder for Parallel Connection 52, brake pump push rod
51 drive the input for being arranged at twin-stage Cylinder for Parallel Connection.Twin-stage Cylinder for Parallel Connection 52 for this area ripe accessory, this enforcement
Example is no longer described in detail.
In addition, the input of described brake pump push rod 51 is linkedly set with brake pump push rod input linkage board 53, it is described
Power-assisted sliding sleeve 41 the ejection of axial outer end face be supported in brake pump push rod input linkage board 53 on, and brake pump push rod input connection
The center of dynamic plate 53 is fixedly installed the cushion pad 531 coordinated with the head end ejection of treadle assembly.
Additionally, preferably, described treadle assembly 2 includes treadle 22, treadle linkage set 23 and treadle set 24, described
Treadle linkage set 23 be fixedly installed on treadle set 24 input in, and treadle 22 fix be inserted in treadle linkage set 23 in,
The damping sleeve 241 coordinated with the axially extending bore sliding of power-assisted sliding sleeve is arranged with the outer wall of described treadle set 24.
Claims (7)
1. a kind of electric booster braking device, include power-assisted cylinder body, treadle assembly, treadle back-moving spring, Electric booster and
Brake pump assembly, is provided with the brake pump push rod for receiving brake force on described brake pump assembly, Electric booster includes
Electric-powered assembly, sliding are arranged in servo-cylinder body and provide the power-assisted sliding sleeve of sliding driving force by electric-powered assembly, help
Power sliding sleeve coordinates with the ejection of brake pump push rod, it is characterised in that：
Axially extending bore is provided with power-assisted sliding sleeve, guiding slot port is provided with the outer wall of power-assisted sliding sleeve, described treadle assembly is slided
Shifting is arranged in the axially extending bore in power-assisted sliding sleeve, treadle back-moving spring be arranged in axially extending bore and with the head end of treadle assembly
Elastic reset couples, and the back-moving spring being inserted into by guiding slot port in axially extending bore is further fixedly arranged on the power-assisted cylinder body
Alignment pin, the outer end elastic spacing of described treadle back-moving spring is supported on back-moving spring alignment pin, and power-assisted sliding sleeve passes through
Its guiding slot port does axial slip cooperation with back-moving spring alignment pin, is provided with back-moving spring alignment pin and is available for treadle assembly
Head end axially across alignment pin through hole, the head end of described treadle assembly is axially to brake pump push rod direction slipping
In sequentially pass through the outer end of axially extending bore in alignment pin through hole and power-assisted sliding sleeve and ejection is acted on brake pump push rod.
2. a kind of electric booster braking device according to claim 1, it is characterised in that：Described electric-powered assembly bag
Include motor and the few teeth difference reductor with motor output shaft linkage.
3. a kind of electric booster braking device according to claim 2, it is characterised in that：Described few teeth difference reductor
Gear shaft is linkedly set with output shaft, the outer wall side of described power-assisted sliding sleeve is provided with the transmission being connected with gear spindle drive
Tooth bar, the outer wall of described power-assisted sliding sleeve is smooth spigot surface on the opposite side relative to driving rack side, described
Rotate in servo-cylinder body and be provided with roller bearing, the roller bearing is rolled with the smooth spigot surface of power-assisted sliding sleeve and couples cooperation.
4. a kind of electric booster braking device according to claim 1, it is characterised in that：Described treadle back-moving spring pair
The side for answering back-moving spring alignment pin is provided with spring housing, and the outer end limited support of the spring housing is positioned at back-moving spring alignment pin
The inner, the spring housing centre bore that the centrally disposed confession treadle assembly head end of the spring housing is passed through.
5. a kind of electric booster braking device according to claim 1, it is characterised in that：Described brake pump assembly includes
There is twin-stage Cylinder for Parallel Connection, brake pump top rod driving is arranged at the input of twin-stage Cylinder for Parallel Connection.
6. a kind of electric booster braking device according to claim 1, it is characterised in that：Described brake pump push rod it is defeated
Enter end and be linkedly set with brake pump push rod input linkage board, the axial outer end face ejection of described power-assisted sliding sleeve is supported in brake pump
On push rod input linkage board, and the center of brake pump push rod input linkage board is fixedly installed and matches somebody with somebody with the head end ejection of treadle assembly
The cushion pad of conjunction.
7. a kind of electric booster braking device according to claim 1, it is characterised in that：Described treadle assembly includes stepping on
Bar, treadle linkage set and treadle set, described treadle linkage set is fixedly installed in the input of treadle set, and treadle is fixed and inserted
In treadle linkage set, the damping coordinated with the axially extending bore sliding of power-assisted sliding sleeve is arranged with the outer wall that described treadle covers
Set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611085450.0A CN106627549B (en) | 2016-11-30 | 2016-11-30 | Electric booster brake device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611085450.0A CN106627549B (en) | 2016-11-30 | 2016-11-30 | Electric booster brake device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106627549A true CN106627549A (en) | 2017-05-10 |
| CN106627549B CN106627549B (en) | 2023-03-10 |
Family
ID=58813487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611085450.0A Active CN106627549B (en) | 2016-11-30 | 2016-11-30 | Electric booster brake device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106627549B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108422990A (en) * | 2018-05-18 | 2018-08-21 | 浙江三星机电股份有限公司 | Electric booster braking device with treadle assembly travel feedback mechanism |
| CN109204270A (en) * | 2017-06-30 | 2019-01-15 | 比亚迪股份有限公司 | Brake pedal simulator, brake system of car and vehicle |
| CN109204266A (en) * | 2017-06-30 | 2019-01-15 | 比亚迪股份有限公司 | Brake pedal simulator, brake system of car and vehicle |
| CN109204253A (en) * | 2017-06-30 | 2019-01-15 | 比亚迪股份有限公司 | Brake pedal simulator, brake system of car and vehicle |
| CN109204264A (en) * | 2017-06-30 | 2019-01-15 | 比亚迪股份有限公司 | Brake pedal simulator, brake system of car and vehicle |
| CN109204263A (en) * | 2017-06-30 | 2019-01-15 | 比亚迪股份有限公司 | Brake pedal simulator, brake system of car and vehicle |
| CN114701468A (en) * | 2022-03-29 | 2022-07-05 | 淄博爱科工矿机械有限公司 | Stall intelligent protection system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109204270A (en) * | 2017-06-30 | 2019-01-15 | 比亚迪股份有限公司 | Brake pedal simulator, brake system of car and vehicle |
| CN109204266A (en) * | 2017-06-30 | 2019-01-15 | 比亚迪股份有限公司 | Brake pedal simulator, brake system of car and vehicle |
| CN109204253A (en) * | 2017-06-30 | 2019-01-15 | 比亚迪股份有限公司 | Brake pedal simulator, brake system of car and vehicle |
| CN109204264A (en) * | 2017-06-30 | 2019-01-15 | 比亚迪股份有限公司 | Brake pedal simulator, brake system of car and vehicle |
| CN109204263A (en) * | 2017-06-30 | 2019-01-15 | 比亚迪股份有限公司 | Brake pedal simulator, brake system of car and vehicle |
| CN108422990A (en) * | 2018-05-18 | 2018-08-21 | 浙江三星机电股份有限公司 | Electric booster braking device with treadle assembly travel feedback mechanism |
| CN114701468A (en) * | 2022-03-29 | 2022-07-05 | 淄博爱科工矿机械有限公司 | Stall intelligent protection system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106627549B (en) | 2023-03-10 |
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