Control method of sliding a vehicle door by a powered sliding device

• US 6,359,762 B1
• Filed: 11/09/1999
• Issued: 03/19/2002
• Est. Priority Date: 11/09/1998
• Status: Expired due to Term

• Current Assignee: Mitsui Kinzoku Act Corporation (Mitsui Mining & Smelting Co., Ltd.)
• Original Assignee: Mitsui Kinzoku Kogyo Kabushiki Kaisha
• Inventors: Yokomori, Kazuhito
• Primary Examiner(s): Jackson, Stephen W.
• Application Number:
  US09/436,625
• Time in Patent Office: 861 Days
• Field of Search: 361/51, 361/90, 361/18, 361/115, 361/1, 361/23, 361/24
• US Class Current: 361/51
• CPC Class Codes: E05B 81/20 for assisting final closing or for initiating opening
• CPC Class Codes: E05F 15/40 Safety devices, e.g. detection of obstructions or end positions
• CPC Class Codes: E05F 15/646 allowing or involving a secondary movement of the wing, e.g. rotational or transversal
• CPC Class Codes: E05Y 2201/654 Cables
• CPC Class Codes: E05Y 2201/664 Drums
• CPC Class Codes: E05Y 2800/00 Details, accessories and auxiliary operations not otherwise provided for
• CPC Class Codes: E05Y 2900/531 Doors

Abstract

A control method of a powered sliding device having a wire drum coupled through a wire cable with a sliding door slidably attached to a vehicle body, a motor for rotating the wire drum by the electric power from a battery, a voltmeter for measuring the battery voltage of the battery, and a sensor for detecting the sliding speed of the sliding door, comprises the steps of: measuring the sliding speed SS by the sensor when a predetermined time has elapsed from an actuation of the motor; comparing the measured sliding speed SS with the lower limited speed LLS of the sliding door determined according to the degree of the battery voltage BV measured by the voltmeter; and stopping or reversing the motor when the sliding speed SS is slower than the lower limited speed LLS.

Claims

1. A control method of a powered sliding device having a wire drum coupled through a wire cable with a sliding door slidably attached to a vehicle body, a motor for rotating the wire drum by electric power from a battery, a voltmeter for measuring battery voltage of the battery, and a sensor for detecting a sliding speed of the sliding door, comprising the steps of:

measuring said sliding speed (SS) by said sensor when a predetermined time has elapsed from an actuation of said motor;

comparing said measured sliding speed (SS) with a lower limited speed (LLS) of said sliding door which is determined according to a degree of said battery voltage (BV) measured by said voltmeter; and

stopping or reversing said motor when said sliding speed (SS) is slower than said lower limited speed (LLS).

2. A control method of a powered sliding device having a wire drum coupled through a wire cable with a sliding door slidably attached to a vehicle body, a motor for rotating the wire drum by electric power from a battery, a voltmeter for measuring battery voltage of the battery, and a sensor for detecting a sliding speed of the sliding door, comprising the steps of:

measuring said sliding speed (SS) by said sensor when a predetermined time has elapsed from an actuation of said motor;

storing said measured sliding speed (SS) as a main basic speed (MBS);

after that, newly measuring a sliding speed (SS) by said sensor (76);

comparing said newly measured sliding speed (SS) with said main basic speed (MBS); and

stopping or reversing said motor when said newly measured sliding speed (SS) is slower than said main basic speed (MBS) by a difference exceeding a comparative variable (CV).

3. The control method of a powered sliding device according to claim 2, wherein said comparative variable (CV) is set small when said main basic speed (MBS) is fast and said comparative variable (CV) is set large when said main basic speed (MBS) is slow.

4. The control method of a powered sliding device according to claim 2, wherein said main basic speed (MBS) is renewed to said newly measured sliding speed (SS) when said newly measured sliding speed (SS) becomes faster than said main basic speed (MBS).

5. A control method of a powered sliding device having a wire drum coupled through a wire cable with a sliding door slidably attached to a vehicle body, a motor for rotating said wire drum by electric power from a battery, a voltmeter for measuring battery voltage of said battery, a sensor for detecting a sliding speed of said sliding door, and a transformer circuit provided between said battery and said motor, wherein

when said sliding door is displaced, by a closing rotation of said motor, to a closing speed decreasing point (CDP) which is set at a point apart from a half-latched position in an opening direction by a desired distance, a motor voltage (MV) of said motor is decreased by using said transformer circuit to a minimum voltage necessary for said sliding door to move to said half-latched position from said closing speed decelerating point (CDP).

6. The control method of a powered sliding device according to claim 5, wherein said minimum voltage is determined from said battery voltage (BV) measured by said voltmeter, said sliding speed (SS) measured by said sensor, a previously supposed mechanical resistance (MR) of said sliding door, and an external door-decelerating force (EDF) found from said measured battery voltage (BV) and said measured sliding speed (SS).

7. A control method of a powered sliding device having a wire drum coupled through a wire cable with a sliding door slidably attached to a vehicle body, a motor for rotating said wire drum by electric power from a battery, a voltmeter for measuring battery voltage of said battery, a sensor for detecting a sliding speed of said sliding door, and a transformer circuit provided between said battery and said motor, wherein

when said sliding door is displaced, by an opening rotation of said motor, to an opening speed decreasing point (ODP) which is set at a point apart from a full-open holder in a closing direction by a desired distance, a motor voltage (MV) of said motor is decreased by using said transformer circuit to a minimum voltage necessary for said sliding door to move to a full-open position from said opening speed decelerating point (ODP) by running over said full-open stopper.

8. The control method of a powered sliding device according to claim 7, wherein said minimum voltage is determined from said battery voltage (BV) measured by said voltmeter, said sliding speed (SS) measured by said sensor, a previously supposed mechanical resistance (MR) of said sliding door, and an external door-decelerating force (EDF) found from said measured battery voltage (BV) and said measured sliding speed (SS).