KR19990049736A - Car parking brake device and method - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle parking brake apparatus and method, and in particular, a switch 20 for a parking brake; A switch input terminal 30b for detecting a switching signal applied from the switch 20 as a parking brake signal, a microcomputer 30c for outputting a control signal according to a signal input through the switch input terminal 30b, and the An actuator drive 30d for driving the actuator 40 under the control of the microcomputer 30c, an actuator current sensing unit 30e for detecting when the brake is turned on when the switch 20 is turned on, and the switch ( It consists of an actuator initial state detection unit 30f for monitoring the initial state of the actuator 40 at the time of the off (20), the control signal for the parking brake of the vehicle according to the parking brake switching signal input through the switch 20 An ECU 30 for outputting; An actuator 40 for transmitting a driving force for the parking brake; Characterized in that it comprises a wheel brake device for applying a brake to the wheel (50), the present invention is able to provide a system that can play a role in the development of automobile technology gradually put on the electronic trend, In special situations where the driver cannot operate the hand brake properly when stopping and stopping, simply press the button to activate the parking brake system, which is convenient for use.

Description

Car parking brake device and method

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile parking brake system, and more particularly, to a vehicle parking brake apparatus and a method in which a hand brake is held by a lever and a similar device when a hand brake is held by a vehicle during parking or stopping.

As is well known, the brake system of a vehicle is a brake system in which the driver brakes by pedaling with his feet. In addition to the accelerator pedal, this brake system is an integral part of the car.Brake driving signals are output by four wheels that move the car when the driver presses the pedal every time the driver needs it while driving, and brakes each of the four wheels. It is structured to.

In addition, there is a parking brake system as a brake system that is configured in a vehicle in addition to a general brake pedal. This parking brake system is also referred to as a hand brake, and cannot be used in general driving situations. This brake system is used to prevent rolling down when it is on a slope. Unlike a general brake pedal, this hand brake is attached to the driver's seat next to the driver's seat to move the device up and down. It is designed to turn on and off.

However, such a conventional brake braking device, in particular the parking brake device is of a lever type, occupies a certain space in the interior of the vehicle, which causes a driver's driving radius to be reduced in a narrow driver's seat. When the related products of the brake system are worn out, even if the system is operated while the vehicle is stopped and stopped, there is a problem that the vehicle slides to the slope.

The present invention has been made to solve the above-mentioned conventional problems, and an object thereof is to provide a parking brake device for driving an actuator by operating a lock and release of the parking brake by inputting a switch.

In order to achieve the above object, the vehicle parking brake apparatus of the present invention comprises: a switch for a parking brake; An ECU for outputting a control signal for the parking brake of the vehicle according to the parking brake switching signal inputted through the switch; An actuator for transmitting a driving force for the parking brake according to the driving signal output from the ECU; It characterized in that it comprises a wheel brake device for applying a brake to the wheel of the vehicle in accordance with the driving force input through the actuator.

The vehicle parking brake method may further include: detecting, by the microcomputer, whether the switch for vehicle parking is on; Checking the switch state and determining whether the input switching signal is on or off of the device; Rotating the actuator in the locking direction when the switch input is in the off state, and rotating the actuator in the unlocking direction when the switch input is in the on state; Determining whether an actuator initial state signal has been input; If it is not input, enters a ready state for driving the actuator; if an initial state signal is input, stops the rotation of the actuator and maintains the current state; And recording the on / off state of the switch.

1 is a functional block diagram showing the configuration of a vehicle parking brake apparatus according to an embodiment of the present invention,

FIG. 2 is an operation flowchart illustrating a control method for explaining the operation of the vehicle parking brake apparatus shown in FIG. 1.

<Explanation of symbols for main parts of the drawings>

10: battery 20: switch

30: ECU 30a: power supply

30b: switch input terminal 30c: microcomputer

30d: actuator drive 30e: actuator current sensing unit

30f: Actuator initial state detection unit 40: Actuator

50: wheel brake device

Hereinafter, the above-described contents will be described in detail through an embodiment according to the present invention.

As shown in FIG. 1, the present invention includes a battery 10 for supplying power according to engine ignition of an automobile; A switch 20 for parking brake; A power supply terminal 30a for supplying operating power for the operation of the microcomputer 30c and other devices by inputting power applied from the battery 10, and a switching signal applied from the switch 20 to the parking brake. According to the switch input terminal 30b for detecting a signal, the microcomputer 30c for outputting a control signal according to the parking brake signal input through the switch input terminal 30b, and the control signal input through the microcomputer 30c. An actuator drive 30d for outputting a drive signal for driving the actuator 40, and an actuator current sensing unit 30e for detecting when the brake is left on by driving the actuator 40 when the switch 20 is turned on. And an actuator initial state detecting unit 30f for monitoring the initial state of the actuator 40 when the actuator 40 operates when the switch 20 is turned off, and enters through the switch 20. ECU (30) for outputting a control signal for the parking brake of a vehicle according to the parking brake switch signal; An actuator 40 for transmitting a driving force for the parking brake according to the driving signal output from the ECU 30; This embodiment includes a wheel brake device 50 for braking the wheels of the vehicle in accordance with the driving force input through the actuator 40.

Hereinafter, an operation process of the vehicle parking brake device configured as described above will be described with reference to FIGS. 1 and 2.

After the vehicle finishes driving and executes main and stop at a predetermined place, the microcomputer 30c determines whether the driver tries to operate the parking brake system by pressing the switch 20 (ST 10), and the switch 20. Check whether the state is ON or OFF (ST 20, 90), and if the switch 20 is ON, it is determined whether the input of the switch 20 is OFF, that is, it is not turned OFF again after the switch 20 is input. If it is determined (ST 30), and in the off state, the actuator 40 is rotated in the locking direction (ST 40).

Subsequently, it is determined whether the initial state signal is input from the actuator initial state detection unit 30f that monitors the initial state when the actuator 40 is operated (ST 50), and if it is input, the rotation of the actuator 40 is performed. It stops (ST 60), maintains the present state of the actuator 40 (ST 70), and records the ON state of the switch 20 (ST 80).

In addition, from the above-described step ST 10, if the switch 20 is in the off state, after confirming the switch state, it is determined whether the switch 20 is input (ST 100), and if it is input, the actuator 40 in the release direction Rotate (ST 110), and then determine whether the brake drive actuator current output from the actuator current sensing unit 30e is greater than the operating current in the device when the brake is completely locked (ST 120), and the sense current is the operating current. If it is smaller, the actuator 40 is rotated again in the release direction, and if it is larger than the operating current, the rotation of the actuator 40 is stopped (ST 130), and the current state of the actuator 40 is continuously maintained (ST 140). Then, the off state of the switch 20 is recorded in the corresponding memory in the microcomputer 30c. (ST 150)

As described above, the vehicle parking brake apparatus and method of the present invention can provide a system that can play a role in the development of automobile technology gradually placed on the trend of electronicization, and the driver can properly brake the hand when the vehicle stops. In special situations where it is impossible to operate the vehicle, the parking brake system is activated by simply pressing a button, which is convenient to use.

Claims (4)

A parking brake switch; An ECU for outputting a control signal for the parking brake of the vehicle according to the parking brake switching signal inputted through the switch; An actuator for transmitting a driving force for the parking brake according to the driving signal output from the ECU; And a vehicle brake device configured to brake the wheels of the vehicle according to the driving force input through the actuator. The method of claim 1, wherein the ECU is input to the power supplied from the battery to supply the operating power for the operation of the microcomputer and other devices, and to detect the switching signal applied from the switch as a parking brake signal A microcomputer for outputting a control signal according to a parking brake signal input through the switch input terminal, the switch input terminal, an actuator drive for outputting a driving signal for driving an actuator according to the control signal input through the microcomputer, and the switch An automobile current sensing unit comprising an actuator current sensing unit for detecting when the actuator is driven and the brake is left on when the switch is turned on, and an actuator initial state detecting unit for monitoring the initial state of the actuator when the actuator is operated when the switch is turned off. Brake device. 2. The vehicle parking brake apparatus according to claim 1, wherein the ECU controls the actuator drive in both directions. An automobile parking brake method includes the steps of: a microcomputer detecting whether an automobile parking switch is in an on state; Checking the switch state and determining whether the input switching signal is on or off of the device; Rotating the actuator in the locking direction when the switch input is in the off state, and rotating the actuator in the unlocking direction when the switch input is in the on state; Determining whether an actuator initial state signal has been input; If it is not input, enters a ready state for driving the actuator; if an initial state signal is input, stops the rotation of the actuator and maintains the current state; A vehicle parking brake method comprising the step of recording the on / off state of the switch.