CN205311587U - A helping hand braking system for car - Google Patents
A helping hand braking system for car Download PDFInfo
- Publication number
- CN205311587U CN205311587U CN201620021587.9U CN201620021587U CN205311587U CN 205311587 U CN205311587 U CN 205311587U CN 201620021587 U CN201620021587 U CN 201620021587U CN 205311587 U CN205311587 U CN 205311587U
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- Prior art keywords
- piston
- master cylinder
- reinforcement room
- pedal
- room
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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
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/44—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition co-operating with a power-assist booster means associated with a master cylinder for controlling the release and reapplication of brake pressure through an interaction with the power assist device, i.e. open systems
- B60T8/441—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition co-operating with a power-assist booster means associated with a master cylinder for controlling the release and reapplication of brake pressure through an interaction with the power assist device, i.e. open systems using hydraulic boosters
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
- Braking Systems And Boosters (AREA)
Abstract
The utility model relates to a helping hand braking system for car, including brake master cylinder, hydraulic control unit and hydraulic pressure force amplifier, the master cylinder passes through the brake piping and connects hydraulic control unit, hydraulic pressure force amplifier includes reinforcement room casing, pedal push rod and master cylinder piston push rod, the inside of reinforcement room casing sets up the piston cylinder, pedal push rod's rear end is rotated with brake pedal and is connected pedal push rod's front end sets up the first piston in reinforcement room master cylinder piston push rod's rear end sets up reinforcement room second piston, first piston in reinforcement room and reinforcement room second piston all slide and set up in the piston cylinder, the first piston in reinforcement room with form the reinforcement first piston chamber in room between the second piston of reinforcement room, reinforcement room second piston with form reinforcement room second piston chamber between the blind end of piston cylinder, stretch into before the master cylinder piston push rod brake master cylinder.
Description
Technical field
This utility model relates to a kind of energy assisted braking system for automobile, belongs to automobile brake technical field.
Background technology
Along with the sustainable growth of Global Auto recoverable amount, energy crisis and environmental pollution are day by day serious. The advantages such as the new-energy automobile such as hybrid vehicle, pure electric automobile is energy-efficient with it, low emission obtain the extensive attention of countries in the world, become the effective means solving environmental pollution and shortage of resources. Countries in the world invest considerable capital to develop electric automobile one after another, meanwhile it is also proposed new requirement for the brakes of hybrid vehicle, electric automobile. In order to realize good coordinating with the regenerative braking system of hybrid vehicle, electric automobile itself, the basis of brake safe make regenerative braking system reclaim as far as possible many braking energies, first should cancel the dependence to engine vacuum, control to affect brake pedal feel secondly with regenerative braking system coordination. Existing vacuum assisted hydraulic brake system, vacuum booster depends on engine vacuum, and when coordinating to control with regenerative braking, its hydraulic control can affect master cylinder capacity and hydraulic pressure, thus affecting brake pedal feel. In order to overcome the above-mentioned deficiency of existing brakes, engineers starts to research and develop some novel braking systems from the nineties in last century, and some of which line control brake system begins at this century and uses on hybrid vehicle, electric automobile. Line control brake system becomes the indispensable part of new-energy automobile brakes.
In the utility model patent that a publication No. is CN104071142A of Tsing-Hua University's application, disclose a kind of line control brake system, it instead of the vacuum booster of traditional vacuum assisted hydraulic brake system with a motor, collaborative work by motor, planetary gear reducing mechanism and high pressure accumulator, the piston in master cylinder is promoted to produce brake fluid pressure, thus eliminating the dependence to engine vacuum;Use pedal simulator, eliminate the impact on brake pedal feel when coordinating to control with regenerative braking. But, the system increases the drive motor of a relatively high power is high pressure accumulator accumulation of energy, adds system energy consumption; High pressure accumulator is constantly in high pressure conditions, there is certain potential safety hazard; It addition, the pedal simulator of this system is simple spring, hydraulic analog device, pedal sense not easily regulates, it is impossible to provide pedal sense actively for driver.
In the utility model patent that a publication No. is CN104802777A of Tongji University's application, disclosing the brake fluid system of a kind of pedal sense actively simulation, it promotes brake master cylinder piston with a motor and ball screw framework, produces hydraulic pressure; Two electromagnetic valves lay respectively between brake piping, oil can pipeline and pedal sense simulating chamber, by two continuous open and close controlling of electromagnetic valve realize the active simulation of pedal sense during braking. But, when controlling electromagnetic valve opening and closing between brake piping and pedal sense simulating chamber, the hydraulic pressure of brake piping can be affected, and control accuracy is difficult to ensure that; It addition, between brake piping and pedal sense simulator, electromagnetic valve damages, the high-pressure brake liquid in master cylinder can be directly entered pedal sense simulating chamber so that driver cannot implement braking, and security of system has much room for improvement.
In the utility model patent that a publication No. is CN104760586A of Tongji University's application, disclosing a kind of bi-motor line control brake system, it promotes brake master cylinder piston with a motor and ball screw framework, produces hydraulic pressure; Another motor and ball screw framework are used for providing pedal sense actively for brake pedal. Owing to the system uses two set motors-ball screw framework and two master cylinders, not only structure is complicated, and adds energy consumption and the manufacturing cost of system; Mechanical connection between motor and pedal adds the control difficulty of system, and motor performance requires higher.
Summary of the invention
For the problems referred to above, the purpose of this utility model is to provide a kind of energy assisted braking system for automobile, and this brakes can cancel the dependence to engine vacuum and stable performance, safety.
For achieving the above object, this utility model is by the following technical solutions: a kind of energy assisted braking system for automobile, it is characterised in that: include master cylinder, hydraulic control unit and hydraulic boosting mechanism, described master cylinder connects described hydraulic control unit by brake piping, described hydraulic boosting mechanism includes reinforcement room housing, pedal push rod and master cylinder connecting link, in the inside of described reinforcement room housing, piston cylinder is set, the rear end of described pedal push rod and brake pedal are rotationally connected, reinforcement room first piston is set in the front end of described pedal push rod, reinforcement room the second piston is set in the rear end of described master cylinder connecting link, described reinforcement room first piston and reinforcement room the second piston are all slidably arranged in described piston cylinder, first piston chamber, reinforcement room is formed between described reinforcement room first piston and described reinforcement room the second piston, reinforcement room the second plunger shaft is formed between described reinforcement room the second piston and the blind end of described piston cylinder, described master cylinder is stretched into before described master cylinder connecting link.
Also include motor power brake mechanism and central controller; Described motor servomechanism includes assist motor, deceleration torsion increasing device, the first tooth bar and sleeve, described sleeve is set on described main cylinder piston-rod and leaves gap with described main cylinder piston-rod, is provided with baffle plate on the described main cylinder piston-rod being positioned at described sleeve front; The input of described deceleration torsion increasing device is connected with the output shaft of described assist motor, and the outfan of described deceleration torsion increasing device is gear, and described gear engages with described tooth bar, and described tooth bar is fixing with described sleeve to be connected; Between described sleeve and described reinforcement room housing, return spring is set; Described central controller electrically connects with described assist motor.
Also include pedal simulator, described pedal simulator includes simulator shell, slide in described simulator shell and an emulator piston is set, spatial separation in described simulator shell is become two cavitys by described emulator piston, wherein cavity described in arranges pinion and rack, cavity arranges simulator spring at another described;The tooth bar of described pinion and rack is fixing with described emulator piston to be connected, and the gear of described pinion and rack and the output shaft of a motor connect; The cavity at described simulator spring place is connected with described reinforcement room the second plunger shaft by brake piping, and first piston chamber, described reinforcement room is connected with the described brake piping between described pedal simulator with described reinforcement room the second plunger shaft by the first electromagnetic valve; Described motor electrically connects with described central controller.
Also including oil can, described oil can is connected with the described brake piping between described pedal simulator with described reinforcement room the second plunger shaft by the second electromagnetic valve.
Described pedal push rod arranges pedal displacement sensor, arranging pressure transducer on the brake piping between described first electromagnetic valve and first piston chamber, described reinforcement room, described pedal displacement sensor, pressure transducer all electrically connect with described central controller.
Also including an energy storing device, described energy storing device electrically connects with described motor, central controller, pressure transducer, pedal displacement sensor respectively.
Described first electromagnetic valve adopts normally closed two-position two-way solenoid valve, and described second electromagnetic valve adopts normally opened two-position two-way solenoid valve.
Described master cylinder includes master cylinder housing, in described master cylinder housing, interval arranges two master cylinder pistons, form master cylinder piston chamber respectively between master cylinder piston and between the blind end of described master cylinder piston and described master cylinder housing described in two, be respectively provided with piston reset spring at master cylinder piston intracavity described in two.
It is respectively arranged with reinforcement room spring in first piston chamber, described reinforcement room and reinforcement room the second plunger shaft.
This utility model is owing to taking above technical scheme, it has the advantage that 1, this utility model is because adopting the motor power brake mechanism including assist motor, deceleration torsion increasing device, tooth bar and sleeve, wherein, the baffle plate that sleeve can pass through to be positioned on main cylinder piston-rod drives main cylinder piston-rod to carry out translational motion, thus promoting the piston movement in master cylinder to produce brake fluid such that it is able to cancel the dependence to engine vacuum. 2, this utility model pedal simulator adopts motor to coordinate with pinion and rack, it is possible to provide pedal sense actively for driver, improves driving. 3, this utility model is owing to being provided with ability storage device, and energy storing device electrically connects with the motor of pedal simulator, therefore, the motor of pedal simulator can use as electromotor, the electric energy of generation is used for pressure transducer, pedal displacement sensor etc., more energy-conservation, even and if when brakes powers inefficacy, the sensor also can effectively be powered, in order to provides correct braking information for entire car controller in time. 4, this utility model was when power supply was lost efficacy or assist motor lost efficacy, pedal push rod, master cylinder connecting link can be utilized to push directly on the piston in master cylinder, to produce brake fluid, namely hydraulic boosting mechanism itself can be used as standby braking strategy, and therefore the reliability of brakes is high.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model.
Detailed description of the invention
Below in conjunction with drawings and Examples, this utility model is described in detail.
As it is shown in figure 1, this utility model includes master cylinder 1, hydraulic control unit 2, hydraulic boosting mechanism 3, motor power brake mechanism 4, pedal simulator 5, oil can 6 and central controller 7.
Master cylinder 1 includes master cylinder housing 11, in master cylinder housing 11, interval arranges two master cylinder pistons 12, form master cylinder piston chamber 13 respectively between two master cylinder pistons 12 and between the blind end of master cylinder piston 12 and master cylinder housing 11, in two master cylinder piston chambeies 13, be respectively provided with piston reset spring 14.
Hydraulic control unit 2 connects two master cylinder piston chambeies 13 respectively by two brake pipings, hydraulic control unit 2 can be selected for the anti-lock brake hydraulic control unit in prior art or Vehicle Stability Control hydraulic control unit, it is preferable that Vehicle Stability Control hydraulic control unit.
Hydraulic boosting mechanism 3 includes reinforcement room housing 31, pedal push rod 32 and master cylinder connecting link 33. Reinforcement room housing 31 is fixing with master cylinder housing 11 to be connected, and arranges piston cylinder 34 in the inside of reinforcement room housing 31. The rear end of pedal push rod 32 and brake pedal 8 are rotationally connected, and arrange reinforcement room first piston 35 in the front end of pedal push rod 32, and reinforcement room first piston 35 is slidably arranged in piston cylinder 34. Reinforcement room the second piston 36 is set in the rear end of master cylinder connecting link 33, reinforcement room the second piston 36 is slidably arranged in piston cylinder 34 and is positioned at the front of reinforcement room first piston 35, form first piston chamber, reinforcement room 37 between reinforcement room first piston 35 and reinforcement room the second piston 36, between reinforcement room the second piston 36 and the blind end of piston cylinder 34, form reinforcement room the second plunger shaft 38. The front end of master cylinder connecting link 33 is stretched into after passing piston cylinder 34 in master cylinder housing 11 and near master cylinder piston 12. It is respectively arranged with reinforcement room spring 39 in first piston chamber, reinforcement room 37 and reinforcement room the second plunger shaft 38.
Motor power brake mechanism 4 includes assist motor 41, deceleration torsion increasing device 42, tooth bar 43 and sleeve 44. Sleeve 44 is set on master cylinder connecting link 33 and leaves gap with master cylinder connecting link 33, is provided with baffle plate 331 on master cylinder connecting link 33, and sleeve 44 can drive master cylinder connecting link 33 to travel forward by baffle plate 331. Deceleration torsion increasing device 42 and tooth bar 43 are two, it is symmetricly set on the both sides of sleeve 44, the input of each deceleration torsion increasing device 42 is all connected with the output shaft of assist motor 41, the outfan of deceleration torsion increasing device 42 is a gear 421, gear 421 engages with tooth bar 43, and tooth bar 43 is fixing with sleeve 44 to be connected. It is provided with return spring 45 between sleeve 44 and reinforcement room housing 31.
Pedal simulator 5 includes motor 51, pinion and rack 52 and simulator shell 53. Slide in simulator shell 53 and an emulator piston 54 is set. Spatial separation in simulator shell 53 is become two cavitys by emulator piston 54, arranges pinion and rack 52 wherein, arrange simulator spring 55 in another cavity in a cavity. The output shaft of motor 51 is connected with the gear 521 in pinion and rack 52, and the tooth bar 522 in pinion and rack 52 is fixing with emulator piston 54 to be connected.
Oil can 6 is connected with master cylinder piston chamber 13 by two brake pipings, is used for providing brake fluid. Oil can 6 is connected with an interface of four-way connection 62 by electromagnetic valve 61, and other three interfaces of four-way connection 62 are connected with the cavity at simulator spring 55 place, reinforcement room the second plunger shaft 38, first piston chamber, reinforcement room 37 respectively through brake piping. Brake piping between first piston chamber, reinforcement room 37 and four-way connection 62 arranges electromagnetic valve 63.
Central controller 7 electrically connects with assist motor 41, motor 51, electromagnetic valve 61, electromagnetic valve 63 respectively.Brake piping between first piston chamber, reinforcement room 37 and electromagnetic valve 63 arranges pressure transducer 71; Pedal push rod 32 arranges pedal displacement sensor 72. Pressure transducer 71, pedal displacement sensor 72 all electrically connect with central controller 7.
This utility model also includes an energy storing device 9, and energy storing device 9 electrically connects with motor 51, central controller 7, pressure transducer 71, pedal displacement sensor 72 respectively.
In above-described embodiment, electromagnetic valve 63 adopts normally closed two-position two-way solenoid valve, and electromagnetic valve 61 adopts normally opened two-position two-way solenoid valve.
Operation principle of the present utility model and work process are as follows:
During system worked well, the effect of assist motor 41 is that instead of the driver in traditional vacuum assisted hydraulic brake system and vacuum booster, deceleration torsion increasing device 42 is driven to produce to rotate, deceleration torsion increasing device 42 is engaged by gear 421 and tooth bar 43, rotation is converted into generation translation, tooth bar 43 band moving sleeve 44 promotes master cylinder connecting link 33 to move, and master cylinder connecting link 33 promotes the master cylinder piston 12 of master cylinder 1, thus producing brake fluid pressure. specifically, when the systems are operating normally, brake pedal 8 is operated, and the degree that pedal displacement sensor 72 is operated for brake pedal 8 produces corresponding signal, passes to central controller 7. central controller 7 is by gathering the displacement signal of pedal displacement sensor 72, the pressure signal of pressure transducer 71, the brake pressure signal of hydraulic control unit 2 and pavement behavior identification signal, determine the size of assist motor 41 target output torque, and the actual output moment of torsion controlling assist motor 41 follows the target output torque of assist motor 41, assist motor 41 is connected with deceleration torsion increasing device 42, engagement again through gear 421 and tooth bar 43, the rotation of assist motor 41 is converted into tooth bar 43 and the translation of sleeve 44, sleeve 44 contacts with the baffle plate 331 on master cylinder connecting link 33, master cylinder connecting link 33 is promoted to move, thus promoting the master cylinder piston 12 of master cylinder 1, brake fluid in two master cylinder piston chambeies 13 is pushed hydraulic control unit 5 respectively through brake piping, again through each brake piping being connected with hydraulic control unit 5, push each wheel cylinder brake, thus vehicle is implemented braking.
During system worked well, electromagnetic valve 63 energising is open, and electromagnetic valve 61 energising is closed, the pipeline connection between first piston chamber, reinforcement room 37, reinforcement room the second plunger shaft 38 and pedal simulator 5 hydraulic cavities, and the pipeline being connected with oil can 6 is by blocking; First piston chamber, reinforcement room 37 connects with reinforcement room the second plunger shaft 38, brake pedal 8 is under the driving of driver's pedal force, promote pedal push rod 32, pedal push rod 32 promotes the first chamber, reinforcement room piston 35, and drive the second chamber, reinforcement room piston 36 to force the fluid into pedal simulator 5, promote emulator piston 54 and tooth bar 522 translation, tooth bar 522 engages drive motor 51 and rotates generation electric energy with gear 521, electric energy is stored in energy storing device 9, and energy storing device 9 is directly powered for pressure transducer 71 and pedal displacement sensor 72; In pedal simulator 5, liquid is subject to counteracting force, for providing braking to step on sense to driver, this counteracting force is by the characteristic curve of simulator spring 55 and the central controller 7 active control realization to motor 51, it is possible to provide actively for driver, desirably braking step on sense; When braking completes, when signal controls to terminate, electromagnetic valve 63 power-off is closed, and electromagnetic valve 61 power-off is passed through, and under the effect of reinforcement room spring 39, liquid refluxes, and hydraulic boosting mechanism 3 and each parts of pedal simulator 5 set back.
Active boost of the present utility model can be realized by assist motor 41, is used for realizing actively collision avoidance, adaptive cruise etc. and controls function. When hydraulic control unit 2 uses the Vehicle Stability Control hydraulic control unit in prior art, it is also possible to realized active boost by hydraulic control unit 2, thus implementing Vehicle Stability Control.
When described hydraulic control unit 2 uses the Vehicle Stability Control hydraulic control unit in prior art, if the motor failure of system described in the utility model, and hydraulic control unit 2 can normal operation, the then realization of the function such as now conventional brake, anti-lock brake, stability control, implements according to prior art by hydraulic control unit 2.
When system power supply described in the utility model lost efficacy or assist motor 41 lost efficacy, electromagnetic valve 63 power-off is closed, fluid pressure line between first piston chamber, reinforcement room 37 and reinforcement room the second plunger shaft 38, pedal simulator 5 is disconnected, electromagnetic valve 61 power-off is open, is connected by the fluid pressure line between reinforcement room the second plunger shaft 38 and oil can 6; Driver tramples brake pedal 8, brake pedal 8 promotes pedal push rod 32 to move, pedal push rod 32 promotes master cylinder connecting link 33 by the first chamber, reinforcement room piston 35, reinforcement room the second piston 36, master cylinder connecting link 33 promotes master cylinder piston 12, brake fluid in two master cylinder piston chambeies 13 is pushed hydraulic control unit 2 respectively through brake piping, again through each brake piping being connected with hydraulic control unit 2, push each wheel cylinder brake, thus implementing back-up hydraulic braking. There is difference in areas between the first chamber, reinforcement room piston 35 and reinforcement room the second piston 36, use hydraulic principle that the brake force of driver is amplified; Liquid in reinforcement room the second plunger shaft 38 flows back to oil can 6.
In brakes power-off failure situation, energy storing device 9 still can provide electric energy to pressure transducer 71 and pedal displacement sensor 72, and to other, correlation signal transmission is controlled system.
This utility model only illustrates with above-described embodiment; the structure of each parts, position and connecting is set all can be varied from; on the basis of technical solutions of the utility model; all improvement individual part carried out according to this utility model principle and equivalents, all should not get rid of outside protection domain of the present utility model.
Claims (9)
1. the energy assisted braking system for automobile, it is characterised in that: include master cylinder, hydraulic control unit and hydraulic boosting mechanism; Described master cylinder connects described hydraulic control unit by brake piping;
Described hydraulic boosting mechanism includes reinforcement room housing, pedal push rod and master cylinder connecting link, in the inside of described reinforcement room housing, piston cylinder is set, the rear end of described pedal push rod and brake pedal are rotationally connected, reinforcement room first piston is set in the front end of described pedal push rod, reinforcement room the second piston is set in the rear end of described master cylinder connecting link, described reinforcement room first piston and reinforcement room the second piston are all slidably arranged in described piston cylinder, first piston chamber, reinforcement room is formed between described reinforcement room first piston and described reinforcement room the second piston, reinforcement room the second plunger shaft is formed between described reinforcement room the second piston and the blind end of described piston cylinder, described master cylinder is stretched into before described master cylinder connecting link.
2. the energy assisted braking system for automobile as claimed in claim 1, it is characterised in that: also include motor power brake mechanism and central controller;
Described motor servomechanism includes assist motor, deceleration torsion increasing device, the first tooth bar and sleeve, described sleeve is set on described main cylinder piston-rod and leaves gap with described main cylinder piston-rod, is provided with baffle plate on the described main cylinder piston-rod being positioned at described sleeve front;The input of described deceleration torsion increasing device is connected with the output shaft of described assist motor, and the outfan of described deceleration torsion increasing device is gear, and described gear engages with described tooth bar, and described tooth bar is fixing with described sleeve to be connected; Between described sleeve and described reinforcement room housing, return spring is set;
Described central controller electrically connects with described assist motor.
3. the energy assisted braking system for automobile as claimed in claim 2, it is characterized in that: also include pedal simulator, described pedal simulator includes simulator shell, slide in described simulator shell and an emulator piston is set, spatial separation in described simulator shell is become two cavitys by described emulator piston, wherein cavity described in arranges pinion and rack, cavity arranges simulator spring at another described; The tooth bar of described pinion and rack is fixing with described emulator piston to be connected, and the gear of described pinion and rack and the output shaft of a motor connect; The cavity at described simulator spring place is connected with described reinforcement room the second plunger shaft by brake piping, and first piston chamber, described reinforcement room is connected with the described brake piping between described pedal simulator with described reinforcement room the second plunger shaft by the first electromagnetic valve; Described motor electrically connects with described central controller.
4. the energy assisted braking system for automobile as claimed in claim 3, it is characterised in that: also including oil can, described oil can is connected with the described brake piping between described pedal simulator with described reinforcement room the second plunger shaft by the second electromagnetic valve.
5. the energy assisted braking system for automobile as claimed in claim 3, it is characterized in that: on described pedal push rod, pedal displacement sensor is set, arranging pressure transducer on the brake piping between described first electromagnetic valve and first piston chamber, described reinforcement room, described pedal displacement sensor, pressure transducer all electrically connect with described central controller.
6. the energy assisted braking system for automobile as claimed in claim 5, it is characterised in that: also including an energy storing device, described energy storing device electrically connects with described motor, central controller, pressure transducer, pedal displacement sensor respectively.
7. the energy assisted braking system for automobile as claimed in claim 4, it is characterised in that: described first electromagnetic valve adopts normally closed two-position two-way solenoid valve, and described second electromagnetic valve adopts normally opened two-position two-way solenoid valve.
8. the energy assisted braking system for automobile as claimed in claim 1 or 2, it is characterized in that: described master cylinder includes master cylinder housing, in described master cylinder housing, interval arranges two master cylinder pistons, form master cylinder piston chamber respectively between master cylinder piston and between the blind end of described master cylinder piston and described master cylinder housing described in two, be respectively provided with piston reset spring at master cylinder piston intracavity described in two.
9. the energy assisted braking system for automobile as claimed in claim 1, it is characterised in that: in first piston chamber, described reinforcement room and reinforcement room the second plunger shaft, it is respectively arranged with reinforcement room spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620021587.9U CN205311587U (en) | 2016-01-11 | 2016-01-11 | A helping hand braking system for car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620021587.9U CN205311587U (en) | 2016-01-11 | 2016-01-11 | A helping hand braking system for car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205311587U true CN205311587U (en) | 2016-06-15 |
Family
ID=56202991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620021587.9U Withdrawn - After Issue CN205311587U (en) | 2016-01-11 | 2016-01-11 | A helping hand braking system for car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205311587U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105667485A (en) * | 2016-01-11 | 2016-06-15 | 清华大学 | Power-assisted brake system for automobiles |
| CN106218608A (en) * | 2016-07-29 | 2016-12-14 | 刘力平 | A kind of hydraulic booster |
-
2016
- 2016-01-11 CN CN201620021587.9U patent/CN205311587U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105667485A (en) * | 2016-01-11 | 2016-06-15 | 清华大学 | Power-assisted brake system for automobiles |
| CN105667485B (en) * | 2016-01-11 | 2018-01-23 | 清华大学 | A kind of energy assisted braking system for automobile |
| CN106218608A (en) * | 2016-07-29 | 2016-12-14 | 刘力平 | A kind of hydraulic booster |
| CN106218608B (en) * | 2016-07-29 | 2018-09-18 | 刘力平 | A kind of hydraulic booster |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160615 Effective date of abandoning: 20180123 |
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| AV01 | Patent right actively abandoned |