JP2005194767A - Method of controlling opening/closing body for vehicle - Google Patents

Method of controlling opening/closing body for vehicle Download PDF

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Publication number
JP2005194767A
JP2005194767A JP2004001656A JP2004001656A JP2005194767A JP 2005194767 A JP2005194767 A JP 2005194767A JP 2004001656 A JP2004001656 A JP 2004001656A JP 2004001656 A JP2004001656 A JP 2004001656A JP 2005194767 A JP2005194767 A JP 2005194767A
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Japan
Prior art keywords
opening
closing body
clutch
vehicle
sliding door
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
JP2004001656A
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Japanese (ja)
Inventor
Masami Sayama
雅美 佐山
Original Assignee
Mitsuba Corp
株式会社ミツバ
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.)
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Publication date
Application filed by Mitsuba Corp, 株式会社ミツバ filed Critical Mitsuba Corp
Priority to JP2004001656A priority Critical patent/JP2005194767A/en
Publication of JP2005194767A publication Critical patent/JP2005194767A/en
Application status is Granted legal-status Critical

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of controlling an opening/closing body for a vehicle, which can suppress high-speed movement of the opening/closing body at the time of slant parking of the vehicle, and prevents a battery from running out. <P>SOLUTION: According to the method, an electromagnetic clutch is arranged between a motor and a sliding door, and the sliding door is set immovable by a motor-side worm gear mechanism with the clutch assuming a connected state at the time of halting opening/closing operation of the door, followed by disconnecting the clutch after the lapse of a predetermined time period. When the sliding door is moved, the clutch is set in a connected state and its connection force is decreased. In this manner the clutch can slide by maintaining its connection force in a low level, and therefore the sliding door can be moved at a low speed. Thus even if the sliding door is moved in a self-weight falling direction at the time of parking on a slope, its moving speed is low, which brings the feel of safety to the user. Further an inconvenience of running out of the battery due to long-time application of current to the clutch during engine stoppage, can be prevented. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a control method for a vehicle opening / closing body provided with an electromagnetic clutch.

Conventionally, in a sliding door provided in a vehicle such as an automobile, there is a sliding door that can be automatically opened and closed by a motor.For example, an annular endless cable is connected to the sliding door and the cable is wound around a pulley. The pulley is driven by a motor. Further, by providing an electromagnetic clutch between the pulley and the motor, when the motor is not driven, the electromagnetic clutch is disengaged so that the sliding door can be manually opened and closed lightly (see, for example, Patent Document 1). ).
JP-A-10-280805 (page 4-5, FIG. 5)

  In the above-described vehicle sliding door device, it is conceivable that a worm gear is provided between the motor and the electromagnetic clutch, the clutch is brought into a contact state by excitation, and the clutch is turned off in a non-excitation state. As a result, if the electromagnetic clutch is energized while the motor is stopped, the brake action for the sliding door is generated by the worm gear, so the sliding door's own weight drop direction when stopping on a slope and stopping automatic driving Can prevent sliding.

  However, since the electromagnetic clutch consumes a large amount of excitation current, there is a problem that if the engine is stopped and left in the above state for a long time, the battery will be raised. In order to prevent the battery from running out in such a case, it can be considered that the electromagnetic clutch is de-energized after a certain period of time has passed in the above-described state. However, when it is on a slope, the brake action by the worm gear disappears when the electromagnetic clutch is disengaged, so the sliding door starts to slide naturally in the direction of falling its own weight when de-energized, and if the slope is large, the sliding speed increases. There is a problem that it ends up.

  As a countermeasure, for example, as described in JP-A-10-193978, it is conceivable to intermittently repeat the connection / disconnection of the electromagnetic clutch. Thereby, the sliding speed of the sliding door in its own weight falling direction can be suppressed. However, in this case, the sliding operation of the sliding door becomes intermittent, and there is a possibility that the user misunderstands that the user is malfunctioning due to the repeated sliding / stopping movement. Since it acts on the electromagnetic clutch, there is a problem that an expensive electromagnetic clutch considering durability is required.

  Solving such problems, when the sliding door is stopped halfway when the engine is stopped on a sloping ground, it prevents the battery from running out due to the current flowing through the electromagnetic clutch for a long time and increases the sliding speed of the sliding door in the direction of falling its own weight. In order to achieve prevention, in the present invention, a drive source, a clutch provided between an opening / closing body provided in a vehicle and the drive source, and a control device for controlling the drive source and the clutch A vehicle opening / closing body that automatically controls opening / closing of the opening / closing body and that can be stopped halfway. The clutch is disengaged after a predetermined time has elapsed when the opening / closing body is stopped, and the opening / closing body is opened / closed by means for detecting movement of the opening / closing body. The case of detecting that it has moved Re of the direction, while the clutch to contact state, and shall reduce the moving speed by adjusting the bonding force.

  In particular, the stop position of the opening / closing body may be an intermediate position between the fully open position and the fully closed position of the opening / closing body or the fully open position of the opening / closing body. Further, the clutch is a friction type electromagnetic clutch in which PWM control is performed, and the adjustment of the low joining force may be controlled with the duty ratio of the PWM control.

  As described above, according to the present invention, when the vehicle stops on the slope and opens and closes the opening / closing body, the clutch is kept in contact until a predetermined time elapses, and the opening / closing body is fixed by the braking action on the drive source side. When the opening and closing body starts moving in either direction of opening and closing, the clutch can be brought into the engaged state and the clutch can be slid by reducing the engagement force of the clutch. Can move at low speed. As a result, even if the opening / closing body moves in the direction of falling by its own weight when the vehicle stops on a sloping ground, the speed of movement of the opening / closing body is low, which can give the user a sense of security and keep the current flowing through the clutch for a long time when the engine is stopped. It is possible to prevent the rise.

  In particular, the above control may be performed when the stop position is an intermediate position between the fully closed position and the fully open position, and the above control may be performed also at the fully open position. In addition, by using a friction-type electromagnetic clutch that is PWM-controlled, it is possible to easily perform high-precision control according to the degree of inclination by controlling the adjustment of the low bonding force with the duty ratio of PWM control. Regardless of the difference in inclination, the movement of the opening / closing body in the direction of its own weight drop can be controlled at a constant movement speed, and the user can feel at ease by checking the movement speed of the opening / closing body to control when inclining. Is obtained.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an overall view showing an outline of an open / close structure of a vehicle slide door to which the present invention is applied. The slide door 1 is slidable in the vehicle front-rear direction for getting on and off a rear seat of a vehicle not shown. Is provided. The sliding door 1 is guided and supported by a rail provided on a door sash (not shown) at a part of its upper and lower ends. A guide rail 2 is provided on the vehicle body so as to extend in the vehicle front-rear direction, and a wire 5 is wound around the pulley 4 disposed in the vicinity of both ends of the guide rail 2 so as to form an annular shape. It has been. The wire 5 includes an open side wire 5 a and a closed side wire 5 b, and one end side of each wire 5 is coupled to a slider 3 provided integrally with the slide door 1.

  The other end sides of the wires 5a and 5b are wound in opposite directions around a drive drum 6a provided in the casing of the drive unit 6, and are similarly driven by a motor 7 as a drive source provided in the casing of the drive unit 6. The drive drum 6a is driven to rotate. The motor 7 is driven and controlled by the control device 8. The drive drum 6a is rotated forward and backward in accordance with forward and reverse rotation of the motor 7, and the wire 5 reciprocates in the longitudinal direction thereof, whereby the slider 3 is reciprocated in the vehicle front-rear direction (left and right in the figure) while being guided by the guide rail 2. The sliding door 1 can move to open and close by sliding.

  A rotation pulse signal P of the motor 7 is input to the motor control device 8, and a forward / reverse drive signal D is output from the motor control device 8 to the motor 7. In the motor control device 8, a CPU and a motor drive circuit (not shown) for calculating the slide speed based on the rotation pulse signal P and performing duty control to match the slide speed with a preset target speed, etc. Is provided. The motor control device 8 is connected to an inclination sensor 12 that detects the inclination state of the vehicle, and outputs an output signal CL to an electromagnetic clutch 10 described later.

  In the drive unit 6, as shown in FIG. 2, a worm 7 a is formed on the drive shaft of the motor 7, and a worm gear is configured by meshing the disc-like gear 9 with the worm 7 a, The gear 9 and the pulley 6a are connected via an electromagnetic clutch 10. The electromagnetic clutch 10 is also controlled by a joining / cutting signal CL from the motor control device 8, and is put into a joined state when excited and is brought into a disconnected state when not excited. In order to measure the slide position of the slide door 1, for example, a non-contact type rotation sensor 11 that detects the number of rotations (angle) of the pulley 6 a as a pulse is provided, and the detection signal is input to the motor control device 8. Has been. For example, the position of the slide door 1 can be measured by setting the count number of pulses at the fully closed position to 0, adding pulses in the fully open direction, and subtracting pulses in the fully closed direction.

  In the vehicular slide door device configured as described above, the electromagnetic clutch 10 can be engaged and the slide door 1 can be driven to open and close by the motor 7, and the worm gear mechanism can be driven when the motor 7 stops driving. The sliding door 1 can be fixed at the stop position by the braking action. Thus, even when the sliding door 1 is tilted in the sliding direction, the sliding door 1 can be kept in a half-opened state. For example, when it is not desired to fully open the baggage when it is raining. It is valid. Although the brake mechanism of the worm gear is used, when the signal is not output from the control device 8 due to some failure, the electromagnetic clutch 10 is in a disconnected state, so that the worm gear mechanism and the pulley 6a are separated. Thus, the sliding door 1 can be easily opened and closed manually.

  Next, the control procedure when the slide door 1 is stopped halfway while the engine is stopped will be described below with reference to the flowchart of FIG. This flow is executed when it is determined in the main routine that the sliding door 1 has been stopped halfway. In determining whether the sliding door 1 is stopped halfway, when the motor 7 stops driving, the count number of the fully open position stored in advance (for example, the count number stored when the fully open position is last opened) and the fully closed position are set. If it is a count number (intermediate position) between the count number (0), it may be determined that the operation is stopped halfway. Further, the halfway stop may include the fully open position.

  When it is determined that the vehicle is stopped halfway as described above, in step ST1 of FIG. 3, the electromagnetic clutch 10 is de-energized and put into a clutch disengaged state after a predetermined time has elapsed from the time of the halfway stop determination. The length of the predetermined time may be arbitrary, but is set to an appropriate time for preventing the battery from running up when the exciting current is continuously supplied to the electromagnetic clutch 10.

  In the next step ST2, it is determined whether or not the sliding door 1 is in an inclined state. In the determination of the inclined state, the movement of the slide door 1 due to its own weight (self-weight drop) can be determined by the number of pulses of the rotation sensor 11. For example, the change in the number of pulses within a predetermined time is monitored, converted into a slide speed, and a threshold value of the slide speed in a state where it is tilted to some extent is set. It is possible to determine the presence or absence of an inclined state. In addition, the tilt sensor 12 can be used to determine the degree of tilt.

  If it is determined in step ST2 that the vehicle is not in the inclined state, this flow is terminated and the process returns to the main routine. If it is determined that the vehicle is tilted, the process proceeds to the next step ST3.

  In step ST3, the electromagnetic clutch 10 is subjected to PWM (pulse width modulation) control according to the inclination. Thereby, since the excitation voltage of the electromagnetic clutch 10 can be variably controlled, the clutch engagement force can be reduced with respect to the completely connected state according to the voltage. As the clutch engagement force is reduced, slip torque can be generated between the input and output members of the electromagnetic clutch 10. Therefore, the slip torque is used to gently slide the slide door 1 in the direction of falling its own weight. Can be made.

  Since the slip torque can be easily controlled with high accuracy by PWM control, the moving speed in the falling direction of the own weight can always be controlled to be the same by determining the degree of inclination even if the degree of inclination is different. Accordingly, when the sliding door 1 starts moving after a predetermined time has passed after stopping on the slope, it can be determined that the control by the slip torque is performed by visually confirming that the movement is performed gently. A sense of security of the user can be obtained even when the sliding door 1 moves suddenly.

  In the next step ST4, a timer is started from the time when the process proceeds to step ST4 for the first time from step ST3, and it is determined whether or not the time is up (a certain time has elapsed). The setting of this time-up time is equal to or longer than the time required for the sliding door 1 to slide through the full sliding distance (fully closed position to fully opened position) at the sliding speed at the inclination determination threshold. Leave as time. In step ST4, if it is determined that the time is not up, the process returns to step ST3 to continue the clutch slip control. If it is determined that the time is up, this flow is ended and the process returns to the main routine. .

  Although the sliding door is shown in the illustrated example, the present invention is applicable to a vehicle opening / closing body that is provided in a vehicle and can move by its own weight falling in the downward direction when the vehicle stops on an inclined ground. For example, it can be applied to sunroofs and swing-type doors.

  The control method for a vehicle opening / closing body according to the present invention is effective as an automatic opening / closing device for a vehicle opening / closing body and the like, which has an effect of suppressing an increase in the moving speed of the opening / closing body due to an inclination and preventing the battery from running out.

1 is an overall view showing an outline of an opening / closing structure of a vehicle sliding door to which the present invention is applied. It is a perspective view which shows the outline of a drive unit. FIG. 3 is a flow diagram according to the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sliding door 6 Drive unit 7 Motor, 7a Worm 8 Control apparatus 9 Gear 10 Electromagnetic clutch 11 Rotation sensor 12 Inclination sensor

Claims (4)

  1. A drive source, a clutch provided between the opening / closing body provided in the vehicle and the drive source, and a control device for controlling the drive source and the clutch,
    The drive source has a braking action on the input from the opening / closing body, and is a control method for the vehicle opening / closing body that automatically controls opening / closing of the opening / closing body and is capable of stopping halfway.
    When the clutch is disengaged after a predetermined time has elapsed when the opening / closing body is stopped, and the opening / closing body is detected to have moved in either the opening / closing direction by means for detecting the movement of the opening / closing body, A control method for an opening / closing member for a vehicle, wherein the clutch is brought into a contact state and a moving speed is reduced by adjusting a joint force thereof.
  2.   The vehicle opening / closing body control method according to claim 1, wherein the stop position of the opening / closing body is an intermediate position between a fully opened position and a fully closed position of the opening / closing body.
  3.   The vehicle opening / closing body control method according to claim 1, wherein the stop position of the opening / closing body is a fully open position of the opening / closing body.
  4. 4. The friction type electromagnetic clutch in which the clutch is PWM-controlled, and the adjustment of the low joining force is controlled with the duty ratio of the PWM control. A method for controlling a vehicle opening / closing body.
JP2004001656A 2004-01-07 2004-01-07 Method of controlling opening/closing body for vehicle Granted JP2005194767A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004001656A JP2005194767A (en) 2004-01-07 2004-01-07 Method of controlling opening/closing body for vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004001656A JP2005194767A (en) 2004-01-07 2004-01-07 Method of controlling opening/closing body for vehicle

Publications (1)

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JP2005194767A true JP2005194767A (en) 2005-07-21

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JP2004001656A Granted JP2005194767A (en) 2004-01-07 2004-01-07 Method of controlling opening/closing body for vehicle

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006348700A (en) * 2005-06-20 2006-12-28 Aisin Seiki Co Ltd Opening/closing control device for vehicle door
JP2007023720A (en) * 2005-07-21 2007-02-01 Nissan Motor Co Ltd Vehicle door control device and control method
RU2444599C2 (en) * 2006-08-22 2012-03-10 Роберт Бош Гмбх Control device and method of position of movable part of car body
JP2014194151A (en) * 2013-02-28 2014-10-09 Mitsuba Corp Motor controller

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006348700A (en) * 2005-06-20 2006-12-28 Aisin Seiki Co Ltd Opening/closing control device for vehicle door
JP2007023720A (en) * 2005-07-21 2007-02-01 Nissan Motor Co Ltd Vehicle door control device and control method
RU2444599C2 (en) * 2006-08-22 2012-03-10 Роберт Бош Гмбх Control device and method of position of movable part of car body
US8297682B2 (en) 2006-08-22 2012-10-30 Robert Bosch Gmbh Adjustment device for a movable body part of a motor vehicle and method for adjusting the movable body part
JP2014194151A (en) * 2013-02-28 2014-10-09 Mitsuba Corp Motor controller

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