KR20050028502A - Device for latch/unlatch the door of car - Google Patents

Abstract

An apparatus for unlatching a vehicle door is provided to safely release a locked door by detecting a touch or an access to the door instead of manipulating a door handle. First through fourth photo sensors(22,24,26,28) are implemented inside a door. First through fourth door latch actuators(32,34,36,38) control first through fourth driving motors(42,44,46,48) to control lock/unlock status of door lock latches. A door latch/unlatch switch(50) controls status of the door latch. A gear position detector(60) detects speed positions of a gear. A brake operating switch(70) detects operation status of a brake. A controller(10) receives signals from the first through fourth photo sensors and uses the signals from the door latch/unlatch switch, gear position detector, and the brake manipulation switch to control the first through fourth door latch actuators. A power source(80) supplies power to the components.

Description

Device for latch / unlatch the door of car}

The present invention relates to a door unlatch device of a vehicle, and more particularly, to lock a door latch in a state of detecting safety by touching or approaching a door instead of manipulating an inside door handle to open a door in a vehicle compartment. The present invention relates to a door unlatch device for a vehicle that can be released from a state by pushing a door.

Most vehicle doors have an inside door handle inside the door and an outside door handle outside the door. A passenger who wants to get on or off a car opens the door by releasing the lock state of the door latch by operating a handle of a door mounted inside and outside the door to get on and off the door. The door latch is installed to prevent the vehicle door from opening and closing.

In addition, a power door locking device for forcibly locking the door is used to prevent the door from being opened during high-speed driving. When the driver operates the door locking switch by using the door locking / unlocking switch operated by the driver's manipulation, the power door locking device maintains the locked state so that the door of the vehicle cannot be opened until the unlocking switch is operated.

However, the power door locking device does not automatically release the lock state when the vehicle is parked, so that the driver has to be inconvenient to operate the unlocking switch of the power door locking device.

In order to alleviate this inconvenience, Korean Patent Laid-Open Publication No. 1999-0084432 discloses an apparatus and method for releasing a door of a vehicle. The patent discloses an "actuator for locking and unlocking a door according to a direction of application of current, while receiving a vehicle speed sensor detecting a vehicle speed, a power switch detecting a parking state, and a signal of the vehicle speed sensor and an output signal of the parking switch. And a means for controlling the motor, wherein the control means detects when the vehicle speed detected by the vehicle speed sensor is equal to or less than a predetermined speed and outputs a parking signal from the parking switch, and controls the actuator motor to lock the door. To release the unlocked state. "

Therefore, if the vehicle speed is below a certain speed while the door is locked, the parking switch is on, and the door lock manual switch is off, the door locking state is released to allow the occupant to open the door locking switch, thereby increasing the convenience of the vehicle. will be.

However, the power door unlocking device of the vehicle as described above controls the locking state of the door under certain conditions, and in order for the passenger to get off, it is inconvenient to manually operate the handle of the door even after automatically switching the locking state to the unlocked state. There was a ham.

The present invention has been made to solve the above problems, the object of the present invention is to touch the door or approach the door instead of manipulating the inside door handle to open the door in the interior of the door to detect this to maintain safety The present invention provides a door unlatch device for a vehicle that releases a latch from a locked state so that a door can be pushed open.

Another object of the present invention is to provide a door unlatch device for a vehicle that can increase the convenience of a user by upgrading the function of an ETAX mounted on a conventional vehicle.

The door unlatch device of the vehicle of the present invention for achieving the above object, the first to fourth photosensors installed inside each door of the vehicle; A first to fourth door latch driving unit for controlling a first to fourth driving motor for controlling a lock / unlock state of each door locking latch of the vehicle; A door latch / unlatch switch for forcibly controlling the state of the door latch; A gear position detecting unit for detecting a shift position of the gear; A brake operation switch for detecting an operation state of the brake; When the signal is input from the first-fourth photo sensor, the first-fourth door latch driver is controlled to lock the door latch by using signals input from the door latch / unlatch switch, the gear position detection unit and the brake operation switch. Control unit for releasing or maintaining; And a power supply unit for supplying power to the apparatus.

Hereinafter, with reference to the accompanying drawings, a door unlatch device for a vehicle of the present invention will be described in detail.

The door unlatch device of the vehicle of the present invention does not control the locking state of the door like the conventional power door locking device, but directly controls the door latch (latch) operated by the door handle 2 to lock the door. The door latch is automatically released without manipulating the door handle, and the door is opened by simply pushing the door by hand.

1 shows an installation state of the first photosensor 22 used as a detection means for opening the vehicle door 1 in the present invention. The first photosensor 22 is installed inside the vehicle door 1 and detects this when the occupant approaches the inside door handle 3 for getting off and outputs an electrical signal corresponding thereto. . In FIG. 1, only the first photosensor 22 is displayed in one vehicle door 1, but all of the vehicle doors 1 are installed in the same manner.

When the door unlatch device of the vehicle of the present invention is normally operated, the vehicle door as an operation of pushing the vehicle door 1 after approaching the front of the first photo sensor 22 to get off the occupant in the vehicle compartment ( 1) is opened. Therefore, it is not necessary to operate the inside door handle 3, and it is also possible to remove the inside door handle 3.

A block circuit diagram of the door unlatch device of the motor vehicle of the present invention operating as described above is shown in FIG. As shown, the first to fourth photosensors 22, 24, 26, 28 installed inside each door of the vehicle; First to fourth door latch driving units 32, 34, and 36 for controlling the first to fourth driving motors 42, 44, 46, and 48 for controlling the locking / unlocking state of each door locking latch of the vehicle. 38); A door latch / unlatch switch 50 for forcibly controlling the state of the door latch; A gear position detection unit 60 for detecting a shift position of the gear; A brake operating switch 70 for detecting an operating state of the brake; When a signal is input from the first to fourth photosensors 22, 24, 26, and 28, a signal input from the door latch / unlatch switch 50, the gear position detection unit 60, and the brake operation switch 70 may be input. A control unit (10) for controlling the first to fourth door latch driving units (32, 34, 36, 38) to unlock or maintain the door latch; And a power supply unit 80 for supplying power required for the apparatus.

The first to fourth photosensors 22, 24, 26, and 28 are used to detect an operation state of a passenger in a vehicle, and constitute a photosensor unit 20. Each photosensor is installed one by one adjacent to the inside door handle 3 of the vehicle as shown in FIG. The occupant may open the vehicle door 1 by manipulating the door handle 3 to get off the vehicle or by approaching a hand where the photosensor is installed. When a signal is simultaneously detected in any one or two of the first to fourth photosensors 22, 24, 26 and 28, the signals are operated simultaneously.

Signals output from the first to fourth photosensors 22, 24, 26, and 28 are input to the controller 10. The controller 10 may be configured by using a one-chip microcomputer or connected to a microcomputer for controlling the ETACS mounted on a vehicle. In the latter case, the ETACS has the advantage of contributing to the advanced vehicle by improving its function.

The control unit 10, when a signal is input from the first to fourth photosensors 22, 24, 26 and 28, the door latch / unlatch switch 50, the gear position detection unit 60 and the brake operation switch ( The first and fourth door latch driving units 32, 34, 36, and 38 are controlled by using a signal input from 70 to unlock or maintain the door latch. The operating state of the control unit 10 will be described later.

The first-fourth door latch driving units 32, 34, 36, and 38 constitute the latch driving unit 30, and the first-fourth driving motors 42, 44, 46 of the driving motor unit 40, respectively. 48) to maintain or release the locked state of the door latch.

At this time, the first to fourth driving motors 42, 44, 46 and 48 do not control the locked state of the door as in the conventional vehicle, but are mechanically connected to the latches provided in the respective vehicle doors. The lock state of the door is operated in the same way as unlocking the door using the handle. Therefore, when the driving motor is operated and the latch is released, the door rotates by pushing the door without using the door handle.

The door latch / unlatch switch 50 is forcibly controlling the driving state of the door latch. When the door latch / unlatch switch 50 is set to the door latch state by the driver, the first to fourth ports Even if a signal is detected from the sensors 22, 24, 26 and 28, the door is not released. Therefore, it is possible to prevent the door of the vehicle from being opened in the gear neutral of the vehicle or temporarily stopped while driving.

The gear position detecting unit 60 detects the position of the vehicle gear switching stick, for example, the position of parking (P), neutral (N), single stage driving (D1), two stage driving (D2), and the like. ) To enter.

In addition, the brake operation switch 70 is for detecting this when the vehicle is temporarily stopped by stepping on the brake while the engine of the vehicle is started.

The operating states of the door latch / unlatch switch 50, the gear position detection unit 60, and the brake operation switch 70 are always detected by the control unit 10 and used for latch control of the door.

Referring to the flowchart of Figure 3 the operating state of the door unlatch device of the vehicle of the present invention having the above configuration as follows.

The present invention assumes a passenger in a car. When a passenger approaches or touches the first photo sensor 22 (see FIG. 1) installed near the door handle while driving, a detection signal is generated from the first photo sensor 22 and the detection signal is transmitted. The control unit 10 detects this signal. The control unit 10 may use a control unit mounted on a conventional ETACS.

When a signal is detected from the photosensor as described above, the controller 10 determines whether the gear is in the parking P state by using the information recognized from the gear position detector 60. When the gear is in a driving state other than parking P or neutral N, the release action of the door latch is not performed.

When the gear is in the parking state, the controller 10 outputs a control signal to the first door latch driver 32, and the first door latch driver 32 controls the first drive motor 42 to lock the door latch. Release it. This is essentially the same as unlocking the latch using the door handle.

As the latch is released as described above, the occupant having the intention of getting off may open the door only by pushing the door.

However, if the position of the gear is not in the parking state, the controller 10 determines whether the gear is in the neutral (N) state. When it is determined that the gear is in a neutral state, when it is detected that an unlatch signal is input by the driver using the door latch / unlatch switch 50, the controller 10 transmits a control signal to the first door latch driver 32. The first door latch driver 32 controls the first drive motor 42 to release the door latch.

However, when the gear is located in the “Drive” while driving, not in the parking state or the neutral state, the door is not opened because the latch state of the door is maintained.

On the other hand, even when the gear is in the "Drive", if it is determined by the driver to be in the stopped state (vehicle speed = 0) in the braked state, the unlatch signal is input using the door latch / unlatch switch 50 even in this case. Is detected, the controller 10 outputs a control signal to the first door latch driver 32, and the first door latch driver 32 controls the first drive motor 42 to release the lock state of the door latch. do. The door latch / unlatch switch 50 is operated by a driver to input a signal. Therefore, the occupant can safely get off while the vehicle is stopped.

According to the present invention as described above, instead of manipulating the inside door handle to open the door in the vehicle compartment, when the door is touched, it detects this and releases the latch lock state of the door in a state of maintaining safety. There is an effect of improving the convenience of the user by upgrading the function of Etax (EACS) mounted on the vehicle.

1 is a state diagram of the first photosensor installation according to the present invention,

2 is a block circuit diagram of a door unlatch device of a vehicle of the present invention;

Figure 3 is a flow diagram of the operating state of the door latch device of the vehicle of the present invention.

※ Explanation of code for main part of drawing ※

1: vehicle door 3: inside door handle

10: control unit 20: photosensor unit

22, 24, 26, 28: 1st-4th photo sensor 30: latch drive part

32, 34, 36, 38: 1st-4th door latch drive part 40: drive motor part

42, 44, 46, 48: 1st-4th drive motor 50: door latch / unlatch switch

60: gear position detecting unit 70: brake operation switch

80: power supply

Claims (1)

First to fourth photosensors installed inside each door of the vehicle; A first to fourth door latch driving unit for controlling a first to fourth driving motor for controlling a lock / unlock state of each door locking latch of the vehicle; A door latch / unlatch switch for forcibly controlling the state of the door latch; A gear position detecting unit for detecting a shift position of the gear; A brake operation switch for detecting an operation state of the brake; When the signal is input from the first-fourth photo sensor, the first-fourth door latch driver is controlled to lock the door latch by using signals input from the door latch / unlatch switch, the gear position detection unit and the brake operation switch. Control unit for releasing or maintaining; And a power supply unit for supplying power required for the device.