JP2011026941A - Apparatus for opening/closing back door for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for opening/closing a back door, which assists an operator's operation of opening/closing the back door, so that the back door can be operated to be opened/closed, without the need for a great physical operating force. <P>SOLUTION: This apparatus for opening/closing the back door for a vehicle assists the operator's opening/closing operation, without electrically performing the whole operation of opening/closing the back door 1. When the operator operates the back door 1, the apparatus detects the amount of pull of a handle 4 for closing, and partially assists the physical operating force necessary for the closing operation by a motor, depending on the amount of pull. The apparatus enables the closing operation to be performed without the need for the great operating physical force. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a flip-up back door opening / closing device mounted on a rear portion of a vehicle main body.

  Conventionally, in order to easily open and close the back door of a vehicle, for example, as in an open / close device described in Japanese Utility Model Publication No. 59-96275, a motor driving force is transmitted to the back door to automatically A device that can be opened and closed automatically is known.

Japanese Utility Model Publication No.59-96275

  The above-described opening / closing device can eliminate the need for human operation to open and close the back door, but since all the opening / closing operations are performed electrically, the opening / closing operation takes time and is not convenient. In addition, since the large back door is opened and closed by the driving force of the motor, a large output motor is required, and there is a problem that the apparatus becomes large.

  The present invention has been made to solve the above-described problems, and provides a back door opening / closing device that assists an operator's opening / closing operation, rather than electrically performing all opening / closing operations of the back door. Objective.

  In order to solve the above-described problem, the opening / closing device for a vehicle back door according to claim 1 can be installed on the rear surface of the vehicle body and can be opened and closed, and the driving force can be transmitted to the back door in the opening and closing direction. And a control means for controlling the driving of the motor, and a switch incorporated in a closing handle for closing the back door and detecting an operation force of the operator, and starts the closing operation of the back door. The motor is driven to assist the closing operation of the operator in accordance with the operation force of the operator detected by the switch in a range from the first to the half-open state.

  The vehicle back door opening and closing device according to claim 1 detects the pulling amount (operation force) of the closing handle 4 and assists a part of the operation force necessary for the closing operation by the motor 6. Since the motor 6 assists the closing operation up to the half-open state of the back door, the time required for the operation can be shortened compared to the case where all the closing operations are performed electrically. Furthermore, since it is only necessary to provide a small output motor without requiring a large output motor, the apparatus can be miniaturized.

Vehicle perspective view with back door closed Vehicle perspective view with the back door open Motor driven timing chart

  A vehicle back door opening and closing device according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3.

  As shown in FIG. 1, an opening handle 2 for performing an opening operation is provided on the outer surface of the vehicle back door 1, and a linear switch 3 is incorporated in the opening handle 2. As shown in FIG. 2, a closing handle 4 for performing a closing operation is provided on the inner side surface of the back door 1, and a linear switch 5 is incorporated in the closing handle 4. Further, the back door 1 is provided with a motor 6 (not shown) that can transmit a driving force to the back door 1 in the opening and closing direction.

  The linear switch 3 detects an amount (operation force) of pulling the opening handle 2 when the operator pulls the opening handle 2 to open the back door 1. In accordance with the pulling amount of the opening handle 2 detected by the linear switch 3, a control device 7 (not shown) that controls the driving of the motor 6 drives the motor 6 and transmits the driving force to the back door 1 in the opening direction. Thus, the opening operation of the operator is assisted.

  As shown in FIG. 3, when the operator opens the back door 1 and the pulling amount of the opening handle 2 exceeds a predetermined threshold, the motor 6 starts driving and assists the opening operation. When time elapses, PWM driving is performed to assist the opening operation. Thereafter, when the back door 1 is opened to the half-open state, the drive of the motor 6 is stopped.

  Similarly, the linear switch 5 detects the pulling amount of the closing handle 4 when the operator pulls the closing handle 4 to close the back door 1. According to the pulling amount detected by the linear switch 5, the control device 7 that controls the driving of the motor 6 drives the motor 6 to transmit the driving force in the closing direction to the back door 1, thereby closing the operator. Assist.

  When the operator closes the back door 1 and the pulling amount of the closing handle 2 exceeds a predetermined threshold value, the driving is started to assist the closing operation. When the back door 1 is closed to the half-open state, the drive of the motor 6 is stopped.

  As described above, the opening / closing device for a vehicle back door according to the present invention detects the pulling amount of the opening handle 2 and the closing handle 4 and assists a part of the operation force necessary for the opening / closing operation by the motor 6. In addition, since the motor 6 assists the opening / closing operation up to the half-open state of the back door, the time required for the operation can be shortened compared to the case where all the closing operations are performed electrically. Furthermore, since it is sufficient to provide a small output motor without requiring a large output motor, the apparatus can be miniaturized.

1 Back Door 2 Opening Handle 3 Linear Switch 4 Closing Handle 5 Linear Switch 6 Motor

Claims (1)

A back door installed on the rear surface of the vehicle body that can be opened and closed, a motor that can transmit a driving force to the back door in the opening and closing direction, a control unit that controls driving of the motor, and a closing operation of the back door It has a switch that is built into the closing handle and detects the operator's operating force.
In the range from the start of the closing operation of the back door to the half-open state, the motor is driven to assist the closing operation of the operator according to the operating force of the operator detected by the switch. An opening / closing device for a vehicle back door.

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