KR20120025697A - Electronic parking brake system - Google Patents

Electronic parking brake system Download PDF

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Publication number
KR20120025697A
KR20120025697A KR1020100087747A KR20100087747A KR20120025697A KR 20120025697 A KR20120025697 A KR 20120025697A KR 1020100087747 A KR1020100087747 A KR 1020100087747A KR 20100087747 A KR20100087747 A KR 20100087747A KR 20120025697 A KR20120025697 A KR 20120025697A
Authority
KR
South Korea
Prior art keywords
parking brake
brake system
electronic
electronic parking
motor
Prior art date
Application number
KR1020100087747A
Other languages
Korean (ko)
Inventor
김광연
Original Assignee
주식회사 만도
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 만도 filed Critical 주식회사 만도
Priority to KR1020100087747A priority Critical patent/KR20120025697A/en
Publication of KR20120025697A publication Critical patent/KR20120025697A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
    • B60T13/746—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
    • 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
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/18—Safety devices; Monitoring
    • B60T17/22—Devices for monitoring or checking brake systems; Signal devices
    • B60T17/221—Procedure or apparatus for checking or keeping in a correct functioning condition of brake systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
    • F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
    • F16D65/18—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/81—Braking systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2121/00—Type of actuator operation force
    • F16D2121/18—Electric or magnetic
    • F16D2121/24—Electric or magnetic using motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/44—Mechanical mechanisms transmitting rotation
    • F16D2125/46—Rotating members in mutual engagement

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • General Engineering & Computer Science (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Braking Elements And Transmission Devices (AREA)

Abstract

The present invention relates to an electronic parking brake system for controlling the actuation or deactivation of the electronic parking brake.
To this end, the present invention is to provide a circuit so that the motor and the motor of the actuator can be directly connected by using an emergency switch and relay when a failure such as a parking switch or an electronic control unit (ECU) occurs in the state of the electronic parking brake system (Apply). By releasing the electronic parking brake system by emergency switch operation, the vehicle can be easily moved.

Description

Electronic parking brake system {ELECTRONIC PARKING BRAKE SYSTEM}

The present invention relates to an electronic parking brake system for controlling the actuation or deactivation of the electronic parking brake.

BACKGROUND In general, a brake device includes a parking brake called a normal hand brake or a side brake that keeps a vehicle stationary. The parking brake is operated by a driver operating a parking lever provided at one side of a driver's seat inside a vehicle. When the driver pulls the parking lever and the cable connected thereto is pulled, the rear brake assembly connected to the cable is operated to secure the braking force. On the contrary, the driver releases the parking lever to release the braking force when the cable is released.

However, since the operation of the parking brake according to the operation of the parking lever is operated only by the driver's will, if the vehicle is parked on a ramp without the driver's careless pulling, the vehicle will roll down and cause an unexpected accident. Can be. In addition, since the driver must operate the parking lever at the time of parking or starting driving, the use thereof is very cumbersome, and the use is particularly troublesome for women or the elderly who are weak.

Therefore, in recent years, an electronic parking brake (EPB) system for electronically controlling the driving of the parking brake is used, and is mounted on a conventional disk brake to perform the function of the parking brake.

The electronic parking brake system enables the driver to automatically activate or deactivate the parking brake according to the control judgment of the electronic control unit which manages a simple switch operation or overall control even if the driver does not manually operate the parking brake.

The electronic parking brake system is composed of an actuator having a motor for generating a braking force, and an electronic control unit for driving the actuator. Therefore, the electronic control unit drives the actuator according to the operation state of the switch to apply (Apply) or release (Release) the electronic parking brake system.

However, if a failure of the switch or the electronic control unit occurs in the applied state of the electronic parking brake system, the vehicle cannot be moved. Accordingly, in order to move the vehicle, the vehicle may be moved when a person manually releases the electronic parking brake system by using a device after removing the mounting portion of the electronic parking brake system.

The present invention is to propose an electronic parking brake system that can facilitate the movement of the vehicle by releasing the operation of the electronic parking brake system by the emergency switch operation in the event of a failure of the electronic parking brake system.

To this end, the electronic parking brake system according to an embodiment of the present invention, a parking switch for manipulating the parking of the vehicle, an electronic control unit for controlling the operation or deactivation of the electronic parking brake according to the operating state of the parking switch, and electronic An electronic parking brake system having a motor for generating a braking force according to a control of a control unit, the electronic parking brake system comprising: an emergency switch for emergency operation for movement of a vehicle when a parking switch or an electronic control unit fails; And an actuator drive relay operable to apply a battery voltage directly to the motor in response to an operation signal of the emergency switch.

In addition, the actuator driving relay is characterized in that for applying the battery voltage in the release direction (Release) direction of the actuator with a motor.

In addition, the actuator driving relay is characterized in that the operation of the motor and the motor of the actuator is directly connected when the parking switch or the electronic control unit failure occurs in the operating state of the electronic parking brake.

As described above, when a failure of the parking switch or the electronic control unit occurs in the applied state of the electronic parking brake system, a circuit is configured so that the battery and the motor of the actuator can be directly connected by using an emergency switch and a relay. By deactivating the electronic parking brake system by the emergency switch operation to facilitate the movement of the vehicle.

1 is a diagram illustrating a disc brake to which the electronic parking brake system according to an embodiment of the present invention is applied.
2 is a control block diagram of an electronic parking brake system according to an embodiment of the present invention.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

The electronic parking brake system has a cable puller type, a motor-on-caliper type, and a hydraulic parking brake type depending on the operating method.The driver manually operates the parking brake. Even if not, the vehicle is automatically parked or stopped when the vehicle is stopped or when the vehicle may be pushed back at the start of the hill.

1 is a diagram illustrating a disc brake to which the electronic parking brake system according to an embodiment of the present invention is applied. In an embodiment of the present invention will be described taking an electronic parking brake system of the motor-on-caliper type as an example.

In FIG. 1, a disc brake having a function of an electronic parking brake system is coupled to a vehicle body and has a pair of friction pads 11 installed therein and spaced apart from each other by a predetermined distance, and the vehicle 10 can move forward and backward. And a cylinder portion 20a in which the piston 21 is installed to move forward and backward so as to press the two friction pads 11 to the disk D, and a caliper housing having a finger portion 20b provided on the other side thereof. 20).

This disc brake also includes an electronic parking brake system 30 for enabling the function of the parking brake. The electronic parking brake system 30 pressurizes the piston 21 while moving forward and backward by the rotation of the operating shaft 31 and the operating shaft 31 rotatably installed in the cylinder portion 20a of the caliper housing 20. The motor 33 including a pressure sleeve 32 installed inside the piston 21, a motor 33 for rotating the operating shaft 31, and a plurality of gears 34a and 34b. EPG Electronic Control Unit (ECU), which controls the overall control, and the reduction gear assembly 34 which transmits power generated from the rotating shaft 33a of the rotating shaft 33a to the operating shaft 31 and reduces the number of revolutions thereof. It includes.

2 is a control block diagram of an electronic parking brake system according to an embodiment of the present invention.

In FIG. 2, the electronic parking brake system 30 according to an embodiment of the present invention includes an actuator 35 having a motor 33 for generating a braking force, and a motor driving circuit 37 for driving the actuator 35. And an electronic control unit 36 having a parking switch 38 that is turned on or off by the driver for manipulating the parking of the vehicle.

The parking switch 38 transmits a parking operation signal for application of the electronic parking brake system 30 to the electronic control unit 36 when operated by the driver, and electronic parking when operated by the driver. The parking release signal for releasing the brake system 30 is transmitted to the electronic control unit 36.

That is, the electronic parking brake system 30 is changed to an applied or released state according to the operating state of the parking switch 38.

Therefore, the electronic control unit 36 operates the electronic parking brake system 30 when the parking operation signal is input from the parking switch 38 and applies the parking parking signal when the parking release signal is input from the parking switch 38. Release the system 30.

The braking operation of the electronic parking brake system 30 is performed as follows.

When the driver turns on the parking switch 38 for parking, the parking operation signal is input from the parking switch 38 to the electronic control unit 36. Therefore, the electronic control unit 38 drives the actuator 35 through the motor driving circuit 37 to rotate the motor 33. Rotation of the motor 33 is reduced while passing through the reduction gear assembly 34 to rotate the operating shaft 31 with a large force. When the operating shaft 31 rotates, the axial movement of the pressure sleeve 32 is achieved, and the pressure sleeve 32 applies the piston 21 to apply the electronic parking brake system 30.

If a failure of the parking switch 38 or a failure of the electronic control unit 36 or the like occurs in the operating state of the electronic parking brake system 30, the vehicle becomes impossible to move. Therefore, in order to move the vehicle, the vehicle can be moved only when a person directly releases the electronic parking brake system 30 by using a device after removing the mounting portion of the electronic parking brake system 30.

In order to eliminate such inconvenience, the electronic parking brake system 30 according to the embodiment of the present invention drives the emergency switch 39 and the actuator so that the battery 50 and the motor 33 of the actuator 35 can be directly connected. It further comprises a relay 40.

The emergency switch 39 is turned on or off by the driver to release the electronic parking brake system 30 to facilitate movement of the vehicle in the event of a failure of the electronic parking brake system 30. When the emergency switch 39 is operated on by the driver, the emergency switch 39 transmits a deactivation signal for releasing the electronic parking brake system 30 to the actuator driving relay 40.

Accordingly, the actuator driving relay 40 is turned on so that the voltage supplied from the battery 50 is directly applied to the motor 33 of the actuator 35 when the operation release signal is input from the emergency switch 39.

Meanwhile, reference numeral 60 is a connector for connecting the electronic parking brake system 30 to the vehicle wiring 70 or the actuator drive relay 40.

When a failure of the electronic parking brake system 30 occurs, an operation of releasing the electronic parking brake system 30 for moving the vehicle is performed as follows.

When the driver turns on the emergency switch 39 for movement of the vehicle, an operation deactivation signal is input from the emergency switch 39 to the actuator drive relay 40. Accordingly, the actuator driving relay 40 is turned on so that the voltage supplied from the battery 50 is applied in the direction of release of the actuator 35 through the actuator driving relay 40.

When the voltage of the battery 50 is applied to the motor 33 in the release direction of the actuator 35, the motor 33 rotates in the release direction to operate the electronic parking brake system 30. Release

Therefore, the electronic parking brake system 30 is in a release state regardless of a failure thereof, thereby facilitating the movement of the vehicle.

30: electronic parking brake system 33: motor
35: actuator 36: electronic control unit (ECU)
37: motor drive circuit 39: emergency switch
40: actuator drive relay 50: battery

Claims (3)

And a parking switch for manipulating the parking of the vehicle, an electronic control unit for controlling the operation or releasing of the electronic parking brake according to the operating state of the parking switch, and a motor for generating a braking force under the control of the electronic control unit. In the electronic parking brake system,
An emergency switch which is emergency operated for movement of the vehicle when a failure of the parking switch or the electronic control unit occurs;
And an actuator driving relay operable to directly apply a battery voltage to the motor according to an operation signal of the emergency switch. The method of claim 1,
And the actuator driving relay applies the battery voltage in a release direction of an actuator having the motor. The method of claim 1,
And the actuator driving relay operates to directly connect the battery and the motor of the actuator when a failure of the parking switch or the electronic control unit occurs in the operation state of the electronic parking brake.
KR1020100087747A 2010-09-08 2010-09-08 Electronic parking brake system KR20120025697A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020100087747A KR20120025697A (en) 2010-09-08 2010-09-08 Electronic parking brake system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020100087747A KR20120025697A (en) 2010-09-08 2010-09-08 Electronic parking brake system

Publications (1)

Publication Number Publication Date
KR20120025697A true KR20120025697A (en) 2012-03-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020100087747A KR20120025697A (en) 2010-09-08 2010-09-08 Electronic parking brake system

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KR (1) KR20120025697A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101493608B1 (en) * 2013-09-12 2015-02-23 주식회사 만도 Parking state lifting device and parking state lifting method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101493608B1 (en) * 2013-09-12 2015-02-23 주식회사 만도 Parking state lifting device and parking state lifting method

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E601 Decision to refuse application