CN206544531U - A kind of brake booster - Google Patents
A kind of brake booster Download PDFInfo
- Publication number
- CN206544531U CN206544531U CN201720229209.4U CN201720229209U CN206544531U CN 206544531 U CN206544531 U CN 206544531U CN 201720229209 U CN201720229209 U CN 201720229209U CN 206544531 U CN206544531 U CN 206544531U
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- brake
- motor
- ecu
- brake pedal
- transmission device
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Abstract
The utility model discloses a kind of brake booster and its braking method, including：ECU；Motor and transmission device, the motor are electrically connected with the ECU, obtain power-assisted signal, one end of the transmission device and the motor connection, the other end is connected with brake actuator, for transmitting brake boost；Sensor, it is connected with brake pedal, and is electrically connected with the ECU, for that the information transmission of collection will give the ECU at the brake pedal.Vavuum pump is eliminated, brake boost source is used as by motor, the braking information of brake pedal can be gathered by sensor, and conveys electric signal to ECU；ECU generates power-assisted signal according to braking information, and power-assisted signal is sent into motor, is braked by transmission device with power brake executing agency, independent of vacuum source, shorten braking distance, improve security, indicating brake action is big, hold time length, save the energy, it is safe and reliable.
Description
Technical field
The utility model is related to technical field of automotive electronics, more particularly to a kind of brake booster.
Background technology
Traditional mechanical-hydraulic brakes, operator control pedal, what is be connected with pedal is vacuum booster, and it is responsible for
The power that driver is bestowed into pedal is amplified and promotes main pump piston to carry out brake pressure, and last brake cylinder is promoted by piston and braked
Piece clamps brake disc, so as to realize brake force.In conventional fuel oil power vehicle, brakes can be obtained very at engine
Empty source is so as to allow vacuum booster to provide auxiliary braking power-assisted for driver.The dynamical system of electric car does not possess manufacture vacuum
Ability, still provides additional braking force using vacuum booster for driver.
Technological improvement is carried out on the basis of existing brake structure, is that current most manufacturers use in new energy car
Mode of braking, original vacuum booster and related hydraulic tube rood are to retaining, and the other end of pipeline connects electronic vacuum
Boost pump, when Sensor monitoring is not enough to brake booster vacuum, electronic vacuum pump, which is started working, maintains vacuum environment, by this
The mode of sample, it is ensured that vacuum booster for driver can provide additional braking force as originally.
But, the noise of such electronic vacuum boost pump is larger, it is often more important that, the job stability of electronic vacuum pump
And the life-span all unsuitable does vacuum source supply part.Vacuum in vavuum pump is after brake or true over time
Reciprocal of duty cycle can decline, and cause braking strength small, and braking distance is long, there is potential safety hazard.
Utility model content
The purpose of this utility model is to provide a kind of brake booster and its braking method, to solve in the prior art
The braking strength of presence is small, and braking distance is long, the big technical problem of potential safety hazard.
As above conceive, the technical scheme that the utility model is used is：
A kind of brake booster, including：
ECU；
Motor and transmission device, the motor are electrically connected with the ECU, obtain power-assisted signal, the transmission device
One end and the motor connection, the other end is connected with brake actuator, for transmitting brake boost；
Sensor, it is connected with brake pedal, and is electrically connected with the ECU, for will be at the brake pedal
The information transmission of collection gives the ECU.
Wherein, the sensor is displacement transducer, the displacement for detecting the brake pedal.
Wherein, one end of the transmission device is connected with the output shaft of the motor, the other end and the braking execution machine
The master cylinder connection of structure.
Wherein, the transmission device includes the gear being arranged on the output shaft and the rack engaged with the gear,
The rack is connected with the piston in the master cylinder.
Wherein, the motor is permagnetic synchronous motor.
Wherein, flexible restoring organ is connected with the brake pedal, one end of the flexible restoring organ is fixed, another
End is connected with the brake pedal.
The utility model proposes brake booster, eliminate vavuum pump, also there is no rack displacement sensor, pass through electricity
Machine can gather the braking information of brake pedal by sensor as brake boost source, and convey electric signal to ECU；Electricity
Control unit and power-assisted signal is generated according to braking information, and power-assisted signal is sent to motor, by transmission device with power brake
Executing agency is braked, independent of vacuum source, shortens braking distance, improves security, and indicating brake action is big, length of holding time,
The energy is saved, it is safe and reliable.In the case of no rack displacement sensor, rack position is accurately calculated by motor position
Move, rack displacement is demarcated by pedal displacement, rack position is followed the stroke of brake pedal, realizes smooth braking.
Brief description of the drawings
Fig. 1 is the structural representation for the brake booster that the utility model is provided；
Fig. 2 is the electric control schematic diagram for the brake booster that the utility model is provided.
In figure：
1st, ECU；2nd, motor；3rd, sensor；4th, brake pedal；5th, output shaft；6th, rack；7th, master cylinder；8th, piston.
Embodiment
Below in conjunction with the accompanying drawings the technical solution of the utility model is further illustrated with embodiment.It is understood that this
The specific embodiment of place description is used only for explaining the utility model, rather than limits of the present utility model.Further need exist for
Illustrate, illustrate only the part related to the utility model for the ease of description, in accompanying drawing and not all.
Referring to Fig. 1 and Fig. 2, a kind of brake booster, including ECU 1, motor 2, transmission device and sensor 3.
Motor 2 is electrically connected with ECU 1, obtains power-assisted signal, one end of transmission device connects with the output shaft 5 of motor 2
Connect, the master cylinder 7 of the other end and brake actuator is connected.Transmission device includes the gear and and gear being arranged on output shaft 5
The rack 6 of engagement, rack 6 is connected with the piston 8 in master cylinder 7, for transmitting brake boost.In the present embodiment, motor 2 is forever
Magnetic-synchro motor.
Sensor 3 is connected with brake pedal 4, and is electrically connected with ECU 1, for by brake pedal 4 gather
Information transmission is to ECU 1.Sensor 3 is displacement transducer, is connected on brake pedal 4, for gathering brake pedal 4
Displacement information.
Flexible restoring organ is connected with brake pedal 4, one end of flexible restoring organ is fixed, the other end and brake pedal
4 bottom surface connection.Flexible restoring organ can be spring.After the completion of braking, pin leaves brake pedal 4, and brake pedal 4 is in elasticity
Automatically reset in the presence of resetting-mechanism.
Vavuum pump is eliminated, brake boost source is used as by motor 2, the braking of brake pedal 4 can be gathered by sensor 3
Information, and electric signal is conveyed to ECU 1；ECU 1 generates power-assisted signal according to braking information, and power-assisted signal is sent out
Motor 2 is given, is braked by transmission device with power brake executing agency, independent of vacuum source, shortens braking distance, carries
High security, indicating brake action is big, length of holding time, and saves the energy, safe and reliable.
When needing skidding, brake pedal 4 is stepped on pin, sensor 3 detects the braking information of brake pedal 4, i.e.,
The displacement of brake pedal 4, and generate electric signal and be conveyed to ECU 1, electric signal is voltage signal；ECU 1 can be obtained
The positional information of motor 2 is obtained, and corresponding assist characteristic curve can be transferred according to braking information, the displacement of rack 6 is obtained, will
The position of the displacement of rack 6 and the motor 2 of feedback makes the difference, and is adjusted by pi regulator, the reference rotation velocity of output motor 2.
ECU 1 obtains the rotary speed information of motor 2 in real time, and ECU 1 is according to the reference rotation velocity and motor 2 of motor 2
Feedback rotating speed make the difference, be adjusted by pi regulator, generate power-assisted signal, and power-assisted signal is sent to motor 2, power-assisted
Signal is moment of torsion；Motor 2 controls output shaft 5 to rotate according to power-assisted signal, and the displacement needed is moved with power brake with carry-over bar 6
Executing agency is braked.Moment of torsion is converted into the servo brake power of rack 6 by secondary gear device, rack 6 is moved and promoted
Piston 8 in master cylinder 7 exports brake fluid.
In the present embodiment, the displacement of the displacement calibrating rack 6 of brake pedal 4, the displacement of brake pedal 4 and rack are passed through
Linear between 6 displacement, by the displacement of brake pedal 4, can calculate rack 6 needs the displacement of movement.Rack 6
Need mobile displacement different every time, form braking by grades, the function such as realization is at the uniform velocity braked, brought to a halt, increase device uses the longevity
Life, saves the energy, safe and reliable.
In the case of no rack displacement sensor, the displacement of rack 6 is accurately calculated by the position of motor 2, is led to
Cross the displacement of the displacement calibrating rack 6 of brake pedal 4.Motor 2 uses position-force control mode, steps on the location following of rack 6
Plate stroke, realizes smooth braking.The position of motor 2 as Position Closed Loop for Servo System feedback position signal.
Embodiment of above is to elaborate general principle of the present utility model and characteristic, and the utility model is not by above-mentioned reality
The mode of applying is limited, and on the premise of the utility model spirit and scope are not departed from, the utility model also has various change and change,
These changes and modifications are both fallen within the range of claimed the utility model.Scope is claimed by appended in the utility model
Claims and its equivalent thereof.
Claims (6)
1. a kind of brake booster, it is characterised in that including：
ECU；
Motor and transmission device, the motor are electrically connected with the ECU, obtain power-assisted signal, the one of the transmission device
End and the motor connection, the other end is connected with brake actuator, for transmitting brake boost；
Sensor, it is connected with brake pedal, and is electrically connected with the ECU, for will be gathered at the brake pedal
Information transmission give the ECU.
2. brake booster according to claim 1, it is characterised in that the sensor is displacement transducer, is used for
Detect the displacement of the brake pedal.
3. brake booster according to claim 1, it is characterised in that one end of the transmission device and the motor
Output shaft connection, the other end is connected with the master cylinder of the brake actuator.
4. brake booster according to claim 3, it is characterised in that the transmission device is described defeated including being arranged at
Gear on shaft and the rack engaged with the gear, the rack are connected with the piston in the master cylinder.
5. brake booster according to claim 1, it is characterised in that the motor is permagnetic synchronous motor.
6. brake booster according to claim 1, it is characterised in that be connected with elastic reset on the brake pedal
Mechanism, one end of the flexible restoring organ is fixed, and the other end is connected with the brake pedal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720229209.4U CN206544531U (en) | 2017-03-09 | 2017-03-09 | A kind of brake booster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720229209.4U CN206544531U (en) | 2017-03-09 | 2017-03-09 | A kind of brake booster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206544531U true CN206544531U (en) | 2017-10-10 |
Family
ID=59995270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720229209.4U Active CN206544531U (en) | 2017-03-09 | 2017-03-09 | A kind of brake booster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206544531U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106864443A (en) * | 2017-03-09 | 2017-06-20 | 上海拿森汽车电子有限公司 | A kind of brake booster and its braking method |
| CN108061115A (en) * | 2017-11-27 | 2018-05-22 | 浙江零跑科技有限公司 | Used in new energy vehicles braking executive device and control method |
| CN111002967A (en) * | 2019-12-30 | 2020-04-14 | 上海拿森汽车电子有限公司 | Control method and device of electric power-assisted brake system and vehicle |
-
2017
- 2017-03-09 CN CN201720229209.4U patent/CN206544531U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106864443A (en) * | 2017-03-09 | 2017-06-20 | 上海拿森汽车电子有限公司 | A kind of brake booster and its braking method |
| CN108061115A (en) * | 2017-11-27 | 2018-05-22 | 浙江零跑科技有限公司 | Used in new energy vehicles braking executive device and control method |
| CN111002967A (en) * | 2019-12-30 | 2020-04-14 | 上海拿森汽车电子有限公司 | Control method and device of electric power-assisted brake system and vehicle |
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