CN106427966B - Electronic control brake booster for vehicle brake system - Google Patents
Electronic control brake booster for vehicle brake system Download PDFInfo
- Publication number
- CN106427966B CN106427966B CN201611037510.1A CN201611037510A CN106427966B CN 106427966 B CN106427966 B CN 106427966B CN 201611037510 A CN201611037510 A CN 201611037510A CN 106427966 B CN106427966 B CN 106427966B
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- Prior art keywords
- push rod
- cylindrical portion
- cylindrical part
- boosting
- booster
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Classifications
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- 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
- B60T13/741—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 an ultimate actuator
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- 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
- B60T13/746—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 and mechanical transmission of the braking action
Abstract
The invention discloses an electronic control brake booster used in a vehicle brake system, which comprises a push rod, a booster output component, a motor and a master cylinder, and is characterized in that: the boosting output assembly comprises a boosting pushing part, the boosting pushing part comprises a first cylindrical part and a second cylindrical part which are concentrically arranged, a push rod is inserted into the center of the first cylindrical part, the second cylindrical part is arranged on the outer side of the first cylindrical part, the bottom ends of the first cylindrical part and the second cylindrical part are mutually connected, a supporting part is arranged on the push rod in a radially extending mode, gaps matched with the supporting part are radially formed in the first cylindrical part and the second cylindrical part, the supporting part axially moves in the gaps, and a push rod return spring is arranged between the connecting bottom end of the first cylindrical part and the second cylindrical part and the supporting part. The push rod return spring is arranged between the power-assisted pushing piece and the push rod, so that the push rod return spring can drive the push rod to reset, the structure is more compact, and the space is saved.
Description
Technical Field
The invention relates to the field of automobile braking, in particular to an electronic control brake booster used in a vehicle braking system.
Background
Because of limited force, the operation of the vehicle often requires a power assisting device, for example, the vehicle uses a power assisting device such as compressed air, high pressure oil and the like to operate the related devices of the vehicle, so as to achieve the purpose of light use. The development of modern automobile brakes originates from original mechanical control devices, the most original brake control is that a driver operates a group of simple mechanical devices to apply force to the brakes, the automobile weight is smaller, the speed is lower, the mechanical brake can meet the requirement of automobile braking, but with the increase of the self weight of the automobile, a booster device is more and more important for the brakes, a brake booster is arranged in a limited space, the volume of the brake booster must be controlled, however, the design structure of the brake booster in the prior art, particularly in a booster output component part, is complex, and the transmission efficiency is low.
Disclosure of Invention
The invention aims to provide a brake booster which is compact in structure and high in transmission efficiency.
In order to solve the above technical problems, the present invention provides an electronically controlled brake booster for a vehicle brake system, including a push rod driven by a brake pedal to move forward in an axial direction, a booster output unit for outputting a brake booster, a motor for driving the booster output unit, and a master cylinder for outputting a braking force, characterized in that: the boosting output assembly comprises a boosting pushing piece, the boosting pushing piece comprises a first cylindrical part and a second cylindrical part which are concentrically arranged, the push rod is inserted into the center of the first cylindrical part, the second cylindrical part is arranged on the outer side of the first cylindrical part, the bottom ends of the first cylindrical part and the second cylindrical part are connected with each other, a supporting part is arranged on the push rod in a radially extending mode, notches matched with the supporting part are formed in the first cylindrical part and the second cylindrical part in the radial direction, the supporting part is movably arranged in the notches and moves axially in the notches, and a push rod return spring is arranged between the connecting bottom end of the first cylindrical part and the supporting part of the second cylindrical part and the supporting part.
The first cylindrical part and the connecting bottom end are both made of metal materials, and the second cylindrical part is made of plastic materials.
And a compression reaction disc is arranged on the outer side of the bottom end of the power-assisted pushing piece and is made of rubber.
The center of the first cylindrical part of the boosting push piece is provided with a cavity, a movable piston is arranged in the cavity, the piston is in clearance fit with the cavity, the piston is connected with the push rod, and when the brake is performed, the piston is in contact with the compression reaction disc.
The beneficial effects of the invention are: the push rod return spring is arranged between the power-assisted pushing piece and the push rod, so that the push rod return spring can drive the push rod to reset, the structure is more compact, and the space is saved; the first cylindrical part and the connecting bottom end are made of metal materials, the second cylindrical part is made of plastic materials, so that the stress part is made of metal materials and is harder and firmer, and the stress-free part is made of plastic materials, so that the weight of the stress part is reduced; the bottom end of the boosting pushing piece is provided with a compression reaction disc made of rubber, the center of the reaction disc is subjected to the pushing force of the pushing rod, the outer side of the reaction disc is subjected to boosting, and although the pushing force and the boosting pushing piece are poor, the compression reaction disc receives the same reaction pressure.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic structural view of the power-assisted pushing element of the invention.
Detailed Description
Referring to the drawings, an electronic control brake booster for a vehicle brake system comprises a housing 1, a push rod 2 driven by a brake pedal to move forwards along an axial direction, a booster output assembly 3 for outputting brake boosting, a motor 4 for driving the booster output assembly and a brake master cylinder 5 for outputting brake force are arranged in the housing 1, the booster output assembly 3 comprises a ball screw 31 and a booster 32, the ball screw 31 comprises a screw 311 and a nut 312, an external thread is arranged on the outer surface of the screw 311, an internal thread is arranged on the nut 312, balls are arranged between the external thread and the internal thread, the nut 312 is in transmission connection with a transmission assembly, the nut 312 is driven by the transmission assembly to rotate, the screw 311 moves forwards or backwards along the thread while the nut 312 rotates anticlockwise or clockwise, but the nut 312 is fixed by the transmission assembly, and can only rotate but can not move forwards or backwards. The ball screw 31 is provided with an anti-rotation member (not shown) for preventing the ball screw from rotating, and the anti-rotation member can hoop the screw 311, so that the screw 311 can only move forwards or backwards along the thread, cannot rotate, and is prevented from causing transmission failure due to rotation.
The transmission assembly comprises an auxiliary gear 61 and a transmission gear 62, a nut 312 is arranged at the center of the transmission gear 62, the transmission gear 62 tightly hoops the nut 312, and the transmission gear 62 drives the nut 312 to rotate. The transmission gear 62 and the nut 312 can be connected in an interference fit manner, and a flat key can be arranged between the nut 312 and the transmission gear 62, namely, a groove for placing the flat key is arranged at the joint of the nut 312 and the transmission gear 62, the nut and the transmission gear are mutually clamped and connected through the flat key, and the transmission gear rotates to drive the nut to rotate. The transmission gear 62, the auxiliary gear 61 and the motor gear 41 are sequentially in meshed transmission.
The power-assisted pushing piece 32 comprises a first cylindrical part 37 and a second cylindrical part 36 which are concentrically arranged, the second cylindrical part 36 is arranged on the outer side of the first cylindrical part 37, the bottom ends of the first cylindrical part 37 and the second cylindrical part 36 are connected with each other, the connecting bottom end 39 and the first cylindrical part 37 are integrally arranged and are made of metal materials, the second cylindrical part 36 is made of plastics, so that a stressed part is made of metal materials and is harder and firmer, and the unstressed part is made of plastic materials, so that the weight of the stressed part is reduced. The connecting bottom end 39 serves to connect the first cylindrical portion 37 and the second cylindrical portion 36, and the first cylindrical portion 37 and the second cylindrical portion 37 are provided with notches 38 in the radial direction.
The push rod 2 penetrates through the center of a screw 311 of the ball screw 31, the tail end of the push rod is movably arranged in the power-assisted pushing part 32, a supporting part 7 is arranged on the push rod 2 in a radial extending mode, the supporting part 7 is arranged on the middle lower part of the push rod 2, the supporting part 7 is just matched with the notch 38, namely can be transversely arranged in the notch 38 and can move axially in the notch 38, the tail end of the push rod 2 extends into a first cylindrical part 37 of the power-assisted pushing part 32, a cavity is arranged in the center of the first cylindrical part 37, the center of the connecting bottom end is arranged in a hollow mode, the cavity penetrates through the first cylindrical part, the notch 38 is communicated with the cavity, a movable piston is arranged in the cavity, the piston 51 is in clearance fit with the cavity, and the piston 51 is connected with the tail end of the push rod 2.
The outer side of the bottom end of the boosting pushing piece 32 is provided with a compression reaction disc 322, namely, the compression reaction disc is in contact with the connecting bottom end, the compression reaction disc 322 is made of rubber, when the brake is performed, the piston 51 penetrates through the center of the connecting bottom end to be in contact with the compression reaction disc 322 in a hollow mode, the bottom end of the boosting pushing piece 32 is provided with the compression reaction disc 322 made of rubber, the center of the reaction disc 322 receives the thrust of the push rod 2, the outer side of the reaction disc receives the boosting, and although the thrust and the boosting pushing piece are poor in forming, the compression reaction disc receives the same reaction pressure.
A push rod return spring 8 is arranged between the connecting bottom end 39 of the first cylindrical part 37 and the second cylindrical part 36 and the supporting part 7 of the push rod 2, and when the push rod 2 loses the thrust of the brake pedal, the push rod return spring 8 can drive the push rod 2 to move backwards to reset. The reason why the top end of the first cylindrical portion abuts against the screw of the ball screw 31 is that the power assist 32 can abut against the screw 311 when the push rod 2 moves forward by the thrust of the brake pedal, and the screw 311 is prevented from moving forward along with the push rod 2.
The boosting push piece 32 and the reaction disc are arranged on a bowl-shaped mounting seat 33 together, a middle push rod head 34 extends downwards from the bottom end of the mounting seat 33, the brake master cylinder 5 comprises a movable brake piston 51 and a fixed fixing block 52, the middle push rod head 34 is in contact with the brake piston 51, a return spring 35 is arranged between the mounting seat 33 and the fixing block 52, the boosting push piece 32 moves forwards to push the mounting seat 33 to move forwards to compress the return spring 35, and the middle push rod head 34 pushes the brake piston 51 to move forwards to perform a series of braking actions.
The working principle is as follows: the brake pedal applies forward moving thrust to the push rod 2, the push rod 2 moves forward, the supporting part 7 also moves forward, then a moving signal is transmitted to the ECU, the ECU controls the motor 4 to be started, the motor 4 drives the motor gear 41 to rotate to drive the transmission gear 62 to rotate, the transmission gear 62 drives the nut 312 to rotate, the screw 311 moves forward along threads, the screw 311 moves to push the power-assisted push piece 32 to move forward, the power-assisted push piece 32 pushes the middle push rod head 34 to move forward, the middle push rod head 34 pushes the brake piston 51 forward, and the brake piston 51 moves forward to perform a series of speed reduction and braking actions; in the process of keeping braking, the motor 4 stops driving the motor gear 41 to rotate, so that the motor gear 41 is fixed, and brake failure caused by the fact that the screw 311 backs up due to the elastic force of the return spring 35 is prevented; when the brake is abandoned, the push rod 2 loses the thrust of the brake pedal, the return spring 35 drives the boosting push piece 32 and the screw 311 to reset, the push rod return spring 8 drives the support part 7 and the push rod 2 to reset, and the brake piston 51 also resets accordingly.
Claims (4)
1. An electronically controlled brake booster for use in a vehicle braking system, comprising a push rod (2) driven by a brake pedal to move forward in an axial direction, a booster output assembly (3) for outputting a brake booster, a motor (4) for driving the booster output assembly, and a master cylinder (5) for outputting a braking force, characterized in that: the boosting output assembly (3) comprises a boosting pushing piece (32), the boosting pushing piece (32) comprises a first cylindrical portion (37) and a second cylindrical portion (36) which are concentrically arranged, the push rod (2) is inserted into the center of the first cylindrical portion (37), the second cylindrical portion (36) is arranged on the outer side of the first cylindrical portion (37), the bottom ends of the first cylindrical portion (37) and the second cylindrical portion (36) are connected with each other, a supporting portion (7) is arranged on the push rod (2) in a radially extending mode, notches (38) matched with the supporting portions are radially arranged on the first cylindrical portion (37) and the second cylindrical portion (36), the supporting portions (7) are movably arranged in the notches (38), the supporting portions (7) axially move in the notches (38), and a push rod return spring (8) is arranged between the connecting bottom ends (39) of the first cylindrical portion (37) and the second cylindrical portion (36) and the supporting portions (7).
2. An electronically controlled brake booster for use in a vehicle braking system according to claim 1, characterised in that the first cylindrical portion (37) and the connecting bottom end (39) are both of a metallic material and the second cylindrical portion (36) is of a plastics material.
3. An electronic control brake booster for vehicle braking system according to claim 1, characterized in that the outer side of the bottom end of the boosting push piece (32) is provided with a compression reaction disc (322), and the compression reaction disc (322) is made of rubber.
4. An electronically controlled brake booster for use in a vehicle braking system according to claim 3, wherein: a cavity is formed in the center of the first cylindrical part of the boosting push piece (32), a movable piston (51) is arranged in the cavity, the piston (51) is in clearance fit with the cavity, the piston (51) is connected with the push rod (2), and when the brake is performed, the piston is in contact with the compression reaction disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611037510.1A CN106427966B (en) | 2016-11-23 | 2016-11-23 | Electronic control brake booster for vehicle brake system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611037510.1A CN106427966B (en) | 2016-11-23 | 2016-11-23 | Electronic control brake booster for vehicle brake system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106427966A CN106427966A (en) | 2017-02-22 |
| CN106427966B true CN106427966B (en) | 2022-11-04 |
Family
ID=58221648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611037510.1A Active CN106427966B (en) | 2016-11-23 | 2016-11-23 | Electronic control brake booster for vehicle brake system |
Country Status (1)
| Country | Link |
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| CN (1) | CN106427966B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109204253B (en) * | 2017-06-30 | 2021-08-10 | 比亚迪股份有限公司 | Brake pedal simulator, automobile brake system and vehicle |
| CN109204264B (en) * | 2017-06-30 | 2021-01-19 | 比亚迪股份有限公司 | Brake pedal simulator, automobile brake system and vehicle |
| CN109204266B (en) * | 2017-06-30 | 2021-02-23 | 比亚迪股份有限公司 | Brake pedal simulator, automobile brake system and vehicle |
| CN107757587A (en) * | 2017-10-10 | 2018-03-06 | 浙江力邦合信智能制动系统股份有限公司 | A kind of brake booster with backstop function |
| CN111002956B (en) * | 2019-12-30 | 2021-04-06 | 陕西国力信息技术有限公司 | Asynchronous resetting method of double-support brake booster |
Citations (9)
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| CN1814484A (en) * | 2005-02-02 | 2006-08-09 | 罗伯特博世有限公司 | Pneumatic booster with shifted valve seats |
| DE102006030168A1 (en) * | 2005-06-30 | 2007-01-18 | Hitachi, Ltd. | Solenoid-driven brake booster for use in automobile brake mechanisms, has compression coil spring between drive and booster pistons to provide increased spring force against drive piston as relative deflection of both pistons occur |
| WO2011147609A1 (en) * | 2010-05-26 | 2011-12-01 | Robert Bosch Gmbh | Brake system having a coaxial-ball screw servo brake |
| CN102416943A (en) * | 2011-10-20 | 2012-04-18 | 浙江师范大学 | Electric brake boosting device |
| CN202728211U (en) * | 2012-07-30 | 2013-02-13 | 温岭市奥达机械有限公司 | Vacuum booster |
| CN104709096A (en) * | 2015-03-27 | 2015-06-17 | 吉林大学 | Electric energy assisted braking system with complete coupling function between fraction braking and regenerative braking |
| CN105667485A (en) * | 2016-01-11 | 2016-06-15 | 清华大学 | Power-assisted brake system for automobiles |
| JP2016124355A (en) * | 2014-12-26 | 2016-07-11 | 日立オートモティブシステムズ株式会社 | Electric booster |
| CN206202284U (en) * | 2016-11-23 | 2017-05-31 | 浙江力邦合信智能制动系统股份有限公司 | A kind of electronic control brake booster in motor vehicle braking system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103129546B (en) * | 2011-12-05 | 2016-11-02 | 博世汽车部件(苏州)有限公司 | Electronic control brake booster |
-
2016
- 2016-11-23 CN CN201611037510.1A patent/CN106427966B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1814484A (en) * | 2005-02-02 | 2006-08-09 | 罗伯特博世有限公司 | Pneumatic booster with shifted valve seats |
| DE102006030168A1 (en) * | 2005-06-30 | 2007-01-18 | Hitachi, Ltd. | Solenoid-driven brake booster for use in automobile brake mechanisms, has compression coil spring between drive and booster pistons to provide increased spring force against drive piston as relative deflection of both pistons occur |
| CN101817341A (en) * | 2005-06-30 | 2010-09-01 | 株式会社日立制作所 | Electric booster |
| WO2011147609A1 (en) * | 2010-05-26 | 2011-12-01 | Robert Bosch Gmbh | Brake system having a coaxial-ball screw servo brake |
| CN102416943A (en) * | 2011-10-20 | 2012-04-18 | 浙江师范大学 | Electric brake boosting device |
| CN202728211U (en) * | 2012-07-30 | 2013-02-13 | 温岭市奥达机械有限公司 | Vacuum booster |
| JP2016124355A (en) * | 2014-12-26 | 2016-07-11 | 日立オートモティブシステムズ株式会社 | Electric booster |
| CN104709096A (en) * | 2015-03-27 | 2015-06-17 | 吉林大学 | Electric energy assisted braking system with complete coupling function between fraction braking and regenerative braking |
| CN105667485A (en) * | 2016-01-11 | 2016-06-15 | 清华大学 | Power-assisted brake system for automobiles |
| CN206202284U (en) * | 2016-11-23 | 2017-05-31 | 浙江力邦合信智能制动系统股份有限公司 | A kind of electronic control brake booster in motor vehicle braking system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106427966A (en) | 2017-02-22 |
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