KR20170041345A

KR20170041345A - System and method for auto open/close for vehicle trunk door

Info

Publication number: KR20170041345A
Application number: KR1020150140662A
Authority: KR
Inventors: 엄태준
Original assignee: 엄태준
Priority date: 2015-10-07
Filing date: 2015-10-07
Publication date: 2017-04-17

Abstract

According to the present invention, a system to automatically open or close a trunk door of a vehicle includes: a remote controller or card type smart key wirelessly transmitting a signal to a vehicle; a microwave sensor entering a standby state as the smart key approaches, and installed inside a rear bumper of the vehicle to sense movement by reading a change of a transceiving frequency to a moving object by generating a microwave to the ground; a control unit unlocking the trunk by operating an actuator through the reception of sensing information or locking the trunk by receiving a trunk closing signal from the remote control type smart key and then operating the actuator when the microwave sensor senses a moving foot; and a motor rotating the trunk door at a predetermined angle and then opening the door under the control of the control unit when the trunk door is unlocked by the actuator, or rotating the trunk door at a predetermined angle and then closing the door under the control of the control unit through the trunk closing signal transmitted from the smart key. As such, the present invention is capable of more stably and safely opening or closing the trunk door.

Description

TECHNICAL FIELD [0001] The present invention relates to an automatic opening and closing system for a trunk door of a vehicle,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system for automatically opening and closing a trunk door of an automobile, and more particularly, to a system for automatically opening and closing a trunk door of a car, The present invention relates to an automatic opening and closing system for a trunk door of a vehicle, which automatically closes a trunk door of a car by pressing the open button twice.

There have been many systems or devices that automatically open or close a vehicle trunk door.

The following patent document discloses a system in which a trunk is opened when a person's foot is passed by having a sensor on a rear bumper of an automobile. However, there is a problem that a used sensor is exposed to the outside of a trunk by an infrared sensor, thereby detracting aesthetics.

Korean Patent Publication No. 10-2012-0062115 (June 06, 2012)

In order to solve the above-mentioned problems, the present invention has a sensor on a rear bumper of an automobile to automatically open a trunk door of a vehicle when a person's foot is passed, and conversely, a trunk opening button of a conventional vehicle remote- The present invention aims to provide an automatic opening and closing system for a trunk door of an automobile which automatically closes a trunk door of a vehicle and a method for opening and closing the trunk door.

In order to accomplish the above object, the present invention provides an automatic opening / closing system for a trunk door of a vehicle, comprising: a remote controller or a card type smart key for wirelessly signaling a vehicle; A microwave sensor which is placed in an operation standby state according to the approach of the smart key and is built in a rear bumper of the automobile and generates a microwave in a ground direction to read a transmission / reception frequency change of a moving object to detect movement; When the microwave sensor senses a moving foot, it receives sensing information, unlocks the trunk by operating an actuator, or receives a trunk close signal transmitted from the remote control type smart key, To lock the trunk; And when the trunk door is unlocked by the actuator, the trunk door is rotated by a predetermined angle to open the trunk door under the control of the control unit, and conversely, under the control of the control unit by the trunk close signal transmitted from the smart key, And a motor that closes the trunk door by rotating the trunk door by a predetermined angle.

Preferably, in order to achieve the above-mentioned object, a method for automatically opening a trunk door of a vehicle according to the present invention comprises the steps of: (a) when a vehicle driver having a smart key approaches a vehicle, ; (b) activating an actuator after the control unit receives the frequency to switch the car door to an open state; (c) activating a microwave sensor in which the control unit is mounted on the vehicle rear bumper in the ground direction to sense motion of the foot; (d) determining whether the control unit detects motion by the microwave sensor in a standby state; (e) when the control unit detects motion by the microwave sensor, actuating the actuator to open a locked trunk door; (d) driving the motor to rotate the trunk door to open the control unit; And (e) stopping the operation of the microwave sensor when the control unit completes opening the trunk door.

In order to achieve the above object, a method for automatically closing a trunk door of a vehicle according to the present invention comprises the steps of: (A) pressing a trunk door opening button of a smart key two times in succession, Receiving a second successive push signal of a door open button; (B) driving the motor to close the trunk door when the control unit is in the open state, receiving the two successive push signals of the trunk door open button; And (C) the control unit activates the actuator in a state where the trunk door is closed to lock the trunk door.

The automatic trunk door automatic opening and closing system and the opening and closing method of a trunk door according to the present invention include a microwave sensor which automatically detects a trunk door of a vehicle when a person's foot is passed through the door, There is an effect that the aesthetics of the automobile are enhanced, and the operation principle is prevented from being exposed to other persons.

In addition, the automatic trunk door automatic opening and closing system and opening / closing method according to the present invention have the effect of opening and closing the trunk door more stably and safely.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a system diagram of a vehicle trunk door automatic opening /
FIG. 2 is a flowchart of a method for automatically opening a trunk door of a vehicle according to the present invention,
3 is a flow chart of a method for automatically closing a trunk door of a vehicle according to the present invention, and
4 is a view for explaining a control mode when the trunk door is opened and closed by the automatic trunk door automatic opening and closing system according to the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concept of the term appropriately in order to describe its own invention in the best way. The present invention should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

1 is a system diagram of a system for automatically opening and closing a trunk door of an automobile according to the present invention.

1, the automatic trunk door automatic opening and closing system according to the present invention includes a remote control type or card type smart key 100, a microwave sensor 200, a control unit 300, and a motor 400, .

The smart key 100 is held by the driver to open or close the door of the vehicle or to turn on / off the vehicle. When the user presses the door open button in the remote control type, the door of the vehicle is opened and the microwave sensor 200 is operated And put them in a standby state.

The microwave sensor 200 is installed inside the rear bumper of the automobile and generates a microwave in the direction of the ground to read a transmission / reception frequency change to a moving object to determine whether or not to detect it.

When the microwave sensor 200 senses the foot of the microwave sensor 200, the upper-level control unit 300 receives the sensing information and operates the actuator to release the lock of the trunk, Lt; RTI ID = 0.0 > trunk < / RTI >

When the lock of the trunk is released by the actuator, the motor 400 rotates the trunk door by a predetermined angle to open the trunk door under the control of the control unit 300, Under the control of the control unit 300, and closes the trunk door by turning it by a predetermined angle.

In particular, when the motor 400 is over-current or over-torque is generated more than necessary, the motor 400 is stopped by the control unit 300 judging that a person's body or object is stuck in the trunk door.

A method of opening and closing the vehicle trunk door automatic opening and closing system according to the present invention having the above-described configuration will be described in detail with reference to FIGS. 2 and 3. FIG.

FIG. 2 is a flowchart illustrating a method for automatically opening a trunk door of a vehicle according to the present invention, and FIG. 3 is a flowchart illustrating a method for automatically closing a trunk door of a vehicle according to the present invention.

First, a method for automatically opening a trunk door of a vehicle according to the present invention will be described with reference to FIG.

When the vehicle driver having the smart key 100 approaches the vehicle, the control unit 300 receives the frequency generated by the smart key 100 (S100).

At this time, if the smart key 100 is of the remote control type in step S100`, when the door open button is pressed by the user, a step of receiving the door open signal by the control unit 300 may be performed.

The control unit 300 receives the frequency generated in the smart key 100 in operation S100 and then activates the actuator at the same time as the welcome operation to convert the locked door to the open state (S200).

Likewise, when the control unit 300 receives a door open signal from the remote control type smart key 100, the control unit 300 may perform a step of blinking the emergency light twice and then converting the locked door into an open state have.

The control unit 300 performs a step S300 of converting the locked door to an open state and activating the microwave sensor 200 with a short time difference.

Meanwhile, the step of operating the microwave sensor 200 may be performed even when the ACC is turned off.

When the microwave sensor 200 is being driven, the control unit 300 controls the microwave sensor 200 for a predetermined time (for example, 20 seconds (S400). &Lt; / RTI >

When the microwave sensor 200 senses movement, the control unit 300 performs a step of opening a trunk door in a locked state (S500).

If the control unit 300 fails to detect movement of the microwave sensor 200 during a predetermined period of time, the control unit 300 stops the operation of the microwave sensor 200 by performing the following step S700 .

After step S500, the motor 400 performs a step of completely opening the trunk by rotating the trunk door by a predetermined angle under the control of the control unit 300 (S600).

In step S600, the motor 400 opens the trunk door by a predetermined angle, stops the trunk door for one second, rotates the trunk door again as shown in FIG. 4, and once again stops for one second before fully opening the trunk door So that the opening is completed.

That is, the control unit 300 interlocks with the hall sensor having the current magnetic effect, in which the output changes when the magnetic field is applied perpendicularly to the direction of the current with the motor 400, so that the rotation direction, It is preferable to open and close the trunk door as shown in Fig.

The door can be opened step by step as described above and the trunk door can be prevented from being damaged due to the acceleration due to the opening of the trunk door or by the swinging of the trunk door in the section where the opening is completed.

When the trunk is opened and opened, the control unit 300 performs a step of stopping the operation of the microwave sensor 200 (S700).

Meanwhile, the step of stopping the operation of the microwave sensor 200 may be performed even when the ACC is turned ON.

Next, a method of automatically closing a trunk door of a vehicle according to the present invention will be described with reference to FIG.

When the user presses the trunk door opening button of the smart key 100 twice in succession, the control unit 300 performs a step of receiving the two consecutive pressing signals of the trunk door opening button of the smart key 100 S10).

In order to close the trunk door, in addition to depressing the smart key 100, if a trunk is to be closed and a door is to be closed immediately, a closure button provided in the trunk or a trunk door, Closed signal may be generated.

The control unit 300, which has received the two consecutive pushing signals of the trunk door opening button, performs the step of driving the motor 400 to close the trunk door in the open state (S20).

At this time, the motor 400 closes the trunk door by a predetermined angle as shown in FIG. 4, stops the trunk door for about one second, rotates the trunk door again, It is preferable to complete the closure by stopping for one second.

At this time, the control unit 300 detects an overcurrent in the motor 400 or a torque value due to the over-rotation of the motor 400, It is preferable that the rotation of the motor 400 is stopped and the closing operation of the trunk door is stopped.

The control unit 300 performs a step of locking the trunk door by operating the actuator in a state in which the trunk door is closed (S30)

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It is to be understood that various modifications and changes may be made without departing from the scope of the appended claims.

100: smart key
200: Microwave sensor
300: control unit
400: motor

Claims

A remote controller or a card-type smart key 100 that wirelessly signals a vehicle;
A microwave is installed in the rear bumper of the automobile to generate a microwave in a ground direction and is read by a change in transmission and reception frequency of a moving object to detect movement, A sensor 200;
When the microwave sensor 200 senses the moving foot, it receives the sensing information and operates the actuator to unlock the trunk, or receives the trunk closure signal transmitted from the remote control type smart key 100 A control unit 300 for actuating the actuator to lock the trunk; And
When the lock of the trunk is released by the actuator, the trunk door is rotated by a predetermined angle to open the trunk door under the control of the control unit 300. On the contrary, by the trunk close signal transmitted from the smart key 100, And a motor (400) which is controlled by the controller (300) and rotates the trunk door by a predetermined angle to close the trunk door.

The method according to claim 1,
The microwave sensor (200)
Wherein the operation is automatically stopped when motion is not detected for a predetermined time in a waiting state.

The method according to claim 1,
The microwave sensor (200)
Wherein the automatic trunk door opening / closing system can be operated when the ACC is turned OFF when the vehicle starts to be started, and can be stopped when the ACC is ON when the vehicle is started.

The method according to claim 1,
The motor (400)
Wherein the trunk door is first rotated to stop, the trunk door is rotated secondarily, and then the trunk door is thirdly rotated to complete the opening or closing of the trunk door.

5. The method of claim 4,
The motor (400)
The rotational direction, the rotational angle, and the rotational speed of the rotational shaft are controlled by the control unit 300 in conjunction with the Hall sensor having a current magnetic effect whose output changes when a magnetic field perpendicular to the direction of the current is applied Automatic trunk door automatic opening and closing system.

6. The method according to any one of claims 1 to 5,
The control unit (300)
Wherein the rotation of the motor (400) is stopped when an overcurrent or an excessive torque is generated in the motor (400) in the closing operation of the trunk door.

(a) receiving a frequency generated by the smart key (100) when the control unit (300) approaches a vehicle driver having a smart key (100);
(b) activating an actuator after the control unit (300) receives the frequency to switch the car door to an open state;
(c) operating the microwave sensor (200), wherein the control unit (300) is installed on the vehicle rear bumper in the ground direction to sense the motion of the foot;
(d) determining whether the control unit (300) senses movement by the microwave sensor (200) waiting to be sensed;
(e) when the control unit (300) senses movement by the microwave sensor (200), actuating an actuator to open a locked trunk door;
(d) driving the motor (400) by the control unit (300) to rotate the trunk door to open the trunk door; And
(e) stopping the operation of the microwave sensor (200) when the control unit (300) completes opening of the trunk door (200).

8. The method of claim 7,
In the above steps (a) and (b)
Wherein the door is opened when the user presses the door open button provided on the smart key (100) of the remote controller type.

8. The method of claim 7,
In the step (d)
Wherein the control unit (300) carries out the step (e) when the microwave sensor (200) is not detecting motion for a predetermined time by the microwave sensor (200).

8. The method of claim 7,
The microwave sensor (200)
Wherein the operation of the automobile trunk door can be stopped when the ACC is turned off when the vehicle starts to be turned on and the operation can be stopped when the ACC is turned on when the automobile is turned on.

8. The method of claim 7,
The motor (400)
The trunk door is first rotated to stop, the trunk door is secondarily rotated and stopped again, and then the trunk door is rotated three times to complete the opening of the trunk door.

12. The method of claim 11,
The motor (400)
The rotational direction, the rotational angle, and the rotational speed of the rotational shaft are controlled by the control unit 300 in conjunction with the Hall sensor having a current magnetic effect whose output changes when a magnetic field perpendicular to the direction of the current is applied Automatically opening the trunk door of a car.

(A) when the trunk door opening button of the smart key 100 is pressed twice in succession, the control unit 300 receives the two successive pressing signals of the trunk door opening button of the smart key 100;
(B) driving the motor (400) to close the trunk door when the control unit (300) is in the open state, receiving the two successive push signals of the trunk door open button; And
(C) The control unit (300) activates the actuator in a state where the trunk door is closed to lock the trunk door.

14. The method of claim 13,
The motor (400)
Closing the trunk door by first rotating the trunk door, stopping the trunk door by turning the trunk door for a second time, and then turning the trunk door by a third time to complete the closing of the trunk door.

The method according to claim 13 or 14,
The control unit (300)
Wherein the rotation of the motor (400) is stopped when an overcurrent or an excessive torque is generated in the motor (400) in the closing operation of the trunk door.