CN216424375U - Novel electronic hydraulic power assisting device - Google Patents
Novel electronic hydraulic power assisting device Download PDFInfo
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- CN216424375U CN216424375U CN202121141433.0U CN202121141433U CN216424375U CN 216424375 U CN216424375 U CN 216424375U CN 202121141433 U CN202121141433 U CN 202121141433U CN 216424375 U CN216424375 U CN 216424375U
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Abstract
The utility model relates to a novel electronic hydraulic power assisting device which comprises a brake main cylinder, an electronic control unit, a motor assembly, a pedal sensation simulator assembly, a pedal displacement sensor assembly and a transmission mechanism, wherein the electronic control unit is respectively connected with the pedal displacement sensor assembly and the motor, and the motor is connected with the brake main cylinder through the transmission mechanism. The electronic control unit analyzes the braking intention of the whole vehicle according to the signal of the pedal displacement sensor assembly and other signals of the whole vehicle, generates corresponding torque by controlling the motor and pushes the brake master cylinder to establish hydraulic pressure through the transmission mechanism to realize the braking function, and the pedal feeling simulator assembly is used for providing good brake pedal feeling for a driver. The device has the advantages of small volume, light weight, convenient installation and high pressure build response speed, and the electronic hydraulic power assisting device can realize the functions of braking and brake-by-wire and provide braking assistance for a driver. Meanwhile, the problems of continuous braking and insufficient vacuum source are thoroughly solved.
Description
Technical Field
The utility model relates to the technical field of brake systems, in particular to a novel electronic hydraulic power assisting device.
Background
As a new type of brake system, the development time of the electronic hydraulic booster is not long. The development of the electronic hydraulic power assisting device is the initial stage of the development of the electronic hydraulic power assisting device from 90 years in the 20 th century to 10 years in the beginning of the 21 st century, and the device is designed, developed and tested in actual vehicles by various automobile enterprises and research institutions and is applied to mass production of automobile models in a small amount.
The traditional brake booster device utilizes a vacuum source of an engine to enable a front cavity and a rear cavity of a vacuum booster to form pressure difference, so that a boosting effect is generated, the boosting degree is limited by the vacuum degree of the engine, the larger the vacuum degree is, the better the boosting effect is, and the contrary is.
Referring to fig. 1, the operation of the conventional brake boosting device is divided into the following states:
and (3) natural state: when no braking operation is carried out, the front cavity air chamber and the rear cavity air chamber are communicated with a vacuum valve A through a front cavity channel A, if the engine works at the moment, the vacuum pump vacuumizes, and the front cavity air chamber and the rear cavity air chamber are both in a vacuum state;
the working state is as follows: when a brake pedal is stepped on, the booster inputs force to push the rod to move forwards, so that the vacuum valve A is closed, and the front cavity air chamber and the rear cavity air chamber are separated; the air valve B is opened, outside air enters the rear cavity air chamber through the rear cavity channel B, the front cavity air chamber and the rear cavity air chamber generate pressure difference, and the pressure difference and the input push rod force act on the first piston of the main cylinder together.
And (3) equilibrium state: if the brake pedal force remains unchanged, under the reaction force of the master cylinder piston and under the combined action of the feedback disc, the air valve, the valve spring and the like, the air valve B is closed. For the booster assembly, the input force and the output force are in equilibrium. Any increase in pedal force will break this balance at this time, causing the air valve to reopen, the entry of atmospheric air will further cause the vacuum in the rear chamber to decrease, increasing the differential pressure in the front and rear chambers, and the booster push rod to move forward.
The above prior art solutions have the following drawbacks: first, the conventional brake boosting device needs to rely on an engine vacuum source, which mainly includes: the negative pressure of the intake manifold and a vacuum pump (including a mechanical vacuum pump and an electronic vacuum pump) are limited, and the negative pressure of the intake manifold is unstable due to the working condition of the engine; the mechanical vacuum pump is mainly driven by an engine belt pulley, belongs to engine load, changes along with the change of the rotating speed of the engine, and provides limited vacuum degree; the electronic vacuum pump has limited vacuum pumping capacity due to the influence of the power of the motor, and cannot provide enough vacuum pump in time during continuous braking, so that the requirement of continuous emergency braking is difficult to meet; moreover, the electronic vacuum pump works for a long time, so that the service life is greatly shortened, and the braking safety of the whole vehicle is influenced.
Secondly, the conventional vacuum booster is large in size, the difficulty in arranging the whole vehicle is increased, and the whole vehicle is also required to be connected with a plurality of pipelines and air storage tanks, so that the weight of the whole vehicle is increased; the whole system is complex in connection, and air leakage risks exist, so that the braking safety is influenced.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide a novel electronic hydraulic power assisting device which is small in size, light in weight, convenient to install and high in pressure building response speed, can realize the braking and brake-by-wire functions and provides braking assistance for a driver. Meanwhile, the problems of continuous braking and insufficient vacuum source are thoroughly solved.
The above object of the present invention is achieved by the following technical solutions:
a novel electronic hydraulic power assisting device comprises a brake master cylinder, an electronic control unit, a motor assembly, a pedal sensation simulator assembly, a pedal displacement sensor assembly and a transmission mechanism, wherein the electronic control unit is respectively connected with the pedal displacement sensor assembly and a motor, and the motor is connected with the brake master cylinder through the transmission mechanism;
the electronic control unit analyzes the braking intention of the whole vehicle according to the signal of the pedal displacement sensor assembly and other signals of the whole vehicle, realizes the braking function by controlling the motor to generate corresponding torque and pushing the brake master cylinder to establish hydraulic pressure through the transmission mechanism, and the pedal feeling simulator assembly is used for providing good brake pedal feeling for a driver.
The present invention in a preferred example may be further configured to: and a liquid storage oil can is arranged above the brake master cylinder.
The present invention in a preferred example may be further configured to: the motor assembly is fixed with a connector, and the electronic control unit is fixed at one end of the motor assembly.
The present invention in a preferred example may be further configured to: the pedal displacement sensor assembly is arranged at one end, far away from the brake master cylinder, of the transmission mechanism, the pedal feeling simulator assembly is detachably and fixedly connected to one end of the pedal displacement sensor assembly, and the pedal feeling simulator assembly is fixedly connected with a U-shaped fork.
The present invention in a preferred example may be further configured to: and the vehicle control unit is connected with the electronic control unit and sends a brake-by-wire command to the electronic control unit through CAN communication to execute braking.
In summary, the utility model includes at least one of the following beneficial technical effects:
1. the utility model takes the motor as a power source, utilizes the torque of the motor, converts the rotary motion of the motor end into linear motion through the transmission mechanism, and applies the torque to the piston of the brake master cylinder, thereby building the pressure of the brake master cylinder and providing the brake pressure for the whole vehicle. The electronic hydraulic power assisting device is small in size, light in weight, convenient to install and high in pressure building response speed, can realize the functions of braking and brake-by-wire, and provides braking assistance for a driver. Meanwhile, the problems of continuous braking and insufficient vacuum source are thoroughly solved.
2. The novel electronic hydraulic power assisting device can be simply and conveniently matched with a traditional brake system for use, completely replaces a vacuum booster and accessory parts thereof, and provides a brake power assisting function. Compared with a vacuum booster, the electronic hydraulic booster device CAN realize a brake-by-wire function, and a vehicle control unit and the like CAN send out a brake-by-wire command to execute braking through CAN communication. When a driver steps on a brake pedal, the pedal displacement is detected through the pedal displacement sensor, the pedal displacement corresponds to the target brake fluid pressure, and the motor outputs appropriate torque to achieve the target fluid pressure.
3. This novel electronic hydraulic pressure booster unit uses with traditional braking system matching, can replace vacuum booster and attached spare part completely, and brake pedal and brake fluid pressure decoupling zero support the drive-by-wire braking, adopt motor drive, and hydraulic control precision is high, and the response is fast, and the integrated level is high, small, light in weight, simple to operate, has stronger economic spreading value.
Drawings
Fig. 1 is a schematic structural diagram illustrating a conventional brake booster according to the present invention.
Fig. 2 is a schematic view of the overall structure of the present invention.
Reference numerals: 1. a brake master cylinder; 2. an electronic control unit; 3. a motor assembly; 4. a pedal feel simulator assembly; 5. a pedal displacement sensor assembly; 6. a transmission mechanism; 7. a liquid storage oil can; 8. a connector assembly; 9. a U-shaped fork.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 2, the novel electronic hydraulic power assisting device disclosed by the utility model comprises a brake master cylinder 1, an electronic control unit 2, a motor assembly 3, a pedal feel simulator assembly 4, a pedal displacement sensor assembly 5 and a transmission mechanism 6, wherein the electronic control unit 2 is respectively connected with the pedal displacement sensor assembly 5 and the motor, and the motor is connected with the brake master cylinder 1 through the transmission mechanism 6.
The electronic control unit 2 analyzes the braking intention of the whole vehicle according to the signal of the pedal displacement sensor assembly 5 and other signals of the whole vehicle, generates corresponding torque by controlling a motor and pushes the brake master cylinder 1 to establish hydraulic pressure through the transmission mechanism 6 to realize the braking function, and the pedal feeling simulator assembly 4 is used for providing good brake pedal feeling for a driver.
The novel electronic hydraulic power assisting device can be simply and conveniently matched with a traditional brake system for use, completely replaces a vacuum booster and accessory parts thereof, and provides a brake power assisting function. Compared with a vacuum booster, the electronic hydraulic booster device CAN realize a brake-by-wire function, and a vehicle control unit and the like CAN send out a brake-by-wire command to execute braking through CAN communication. When a driver steps on a brake pedal, the pedal displacement is detected through the pedal displacement sensor, the pedal displacement corresponds to the target brake fluid pressure, and the motor outputs appropriate torque to achieve the target fluid pressure.
In this embodiment, a liquid storage oil can 7 is installed above the brake master cylinder 1, a connector 8 is fixed on the motor assembly 3, and the electronic control unit 2 is fixed at one end of the motor assembly 3. The pedal displacement sensor assembly 5 is installed at one end, far away from the brake master cylinder 1, of the transmission mechanism 6, the pedal feeling simulator assembly 4 is detachably and fixedly connected to one end of the pedal displacement sensor assembly 5, and the pedal feeling simulator assembly 4 is fixedly connected with the U-shaped fork 9. The vehicle control unit is connected with the electronic control unit 2, and the vehicle control unit sends a brake-by-wire command to the electronic control unit 2 through CAN communication to execute braking.
This novel electronic hydraulic pressure booster unit uses with traditional braking system matching, can replace vacuum booster and attached spare part completely, and brake pedal and brake fluid pressure decoupling zero support the drive-by-wire braking, adopt motor drive, and hydraulic control precision is high, and the response is fast, and the integrated level is high, small, light in weight, simple to operate, has stronger economic spreading value.
The implementation principle of the embodiment is as follows: the utility model takes the motor as a power source, utilizes the torque of the motor, converts the rotary motion of the motor end into linear motion through the transmission mechanism 6, and applies the torque to the piston of the brake master cylinder 1, thereby building the pressure of the brake master cylinder 1 and providing the brake pressure for the whole vehicle. The electronic hydraulic power assisting device is small in size, light in weight, convenient to install and high in pressure building response speed, can realize the functions of braking and brake-by-wire, and provides braking assistance for a driver. Meanwhile, the problems of continuous braking and insufficient vacuum source are thoroughly solved.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered by the protection scope of the utility model.
Claims (4)
1. The utility model provides a novel electron hydraulic pressure helping hand device which characterized in that: the pedal-type brake system comprises a brake master cylinder (1), an electronic control unit (2), a motor assembly (3), a pedal sensation simulator assembly (4), a pedal displacement sensor assembly (5) and a transmission mechanism (6), wherein the electronic control unit (2) is respectively connected with the pedal displacement sensor assembly (5) and the motor, and the motor is connected with the brake master cylinder (1) through the transmission mechanism (6);
the electronic control unit (2) analyzes the braking intention of the whole vehicle according to the signal of the pedal displacement sensor assembly (5) and other signals of the whole vehicle, the motor is controlled to generate corresponding torque, the brake master cylinder (1) is pushed by the transmission mechanism (6) to establish hydraulic pressure, the braking function is realized, and the pedal feeling simulator assembly (4) is used for providing good brake pedal feeling for a driver;
a connector (8) is fixed on the motor assembly (3), and the electronic control unit (2) is fixed at one end of the motor assembly (3).
2. The novel electronic hydraulic power assisting device of claim 1, characterized in that: and a liquid storage oil can (7) is arranged above the brake master cylinder (1).
3. The novel electronic hydraulic power assisting device of claim 1, characterized in that: the pedal displacement sensor assembly (5) is installed at one end, far away from the brake master cylinder (1), of the transmission mechanism (6), the pedal feeling simulator assembly (4) is detachably and fixedly connected to one end of the pedal displacement sensor assembly (5), and the pedal feeling simulator assembly (4) is fixedly connected with a U-shaped fork (9).
4. The novel electronic hydraulic power assisting device of claim 3, characterized in that: the vehicle control unit is connected with the electronic control unit (2), and the vehicle control unit sends a brake-by-wire command to the electronic control unit (2) through CAN communication to execute braking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121141433.0U CN216424375U (en) | 2021-05-26 | 2021-05-26 | Novel electronic hydraulic power assisting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121141433.0U CN216424375U (en) | 2021-05-26 | 2021-05-26 | Novel electronic hydraulic power assisting device |
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| CN216424375U true CN216424375U (en) | 2022-05-03 |
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| CN202121141433.0U Active CN216424375U (en) | 2021-05-26 | 2021-05-26 | Novel electronic hydraulic power assisting device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115071660A (en) * | 2022-07-08 | 2022-09-20 | 江苏天一航空工业股份有限公司 | Logistics luggage tractor line control brake control technology |
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2021
- 2021-05-26 CN CN202121141433.0U patent/CN216424375U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115071660A (en) * | 2022-07-08 | 2022-09-20 | 江苏天一航空工业股份有限公司 | Logistics luggage tractor line control brake control technology |
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