Method for controlling sliding speed of vehicle slide door

• US 20060112643A1
• Filed: 03/22/2005
• Published: 06/01/2006
• Est. Priority Date: 03/22/2004
• Status: Active Grant

• Current Assignee: Mitsui Kinzoku Act Corporation (Mitsui Mining & Smelting Co., Ltd.)
• Original Assignee: Mitsui Mining and Smelting Company Limited
• Inventors: Imai, Takuya, Yokomori, Kazuhito
• Granted Patent: US 7,530,199 B2
• Time in Patent Office: Days
• US Class Current: 49/360
• CPC Class Codes: E05F 15/603 using rotary electromotors
• CPC Class Codes: E05F 15/646 allowing or involving a secondary movement of the wing, e.g. rotational or transversal
• CPC Class Codes: E05Y 2201/216 Clutches
• CPC Class Codes: E05Y 2201/246 by motors, magnets, springs or weights
• CPC Class Codes: E05Y 2201/434 Electromotors; Details thereof
• CPC Class Codes: E05Y 2201/462 Electromagnets
• CPC Class Codes: E05Y 2201/654 Cables
• CPC Class Codes: E05Y 2201/664 Drums
• CPC Class Codes: E05Y 2400/514 of speed
• CPC Class Codes: E05Y 2600/41 Concealed
• CPC Class Codes: E05Y 2600/458 in or on a transmission member
• CPC Class Codes: E05Y 2600/46 in or on the wing
• CPC Class Codes: E05Y 2800/73 Single use of elements
• CPC Class Codes: E05Y 2900/531 Doors

Abstract

Under a method to control a sliding speed in accordance with this invention, the motor is initially accelerated for a predetermined reference speed, and then during the initial acceleration period, if a rotational speed of the wire drum is of and above a given value, a difference between a rotational speed of the wire drum and a rotational speed of the motor is of and above a given value, and a rate of acceleration of the wire drum is of and above a given value, the rotational speed of the motor is reduced temporarily judging the slide door is in a state of abnormal acceleration, and then the motor is accelerated again at a lower rate than the initial acceleration toward the reference speed.

Claims

1. A method to control a power slide device comprising a motor, a wire drum for moving a slide door slidably mounted on a vehicle body in a door-opening direction or in a door-closing direction when rotated, a clutch mechanism disposed between the motor and the wire drum, a drum speed sensor for detecting a rotational speed of the wire drum, and a motor speed sensor for detecting a rotational speed of the motor, said method comprising the steps of:

accelerating the motor initially for a predetermined reference speed;

during the initial acceleration period, judging that the slide door is in a state of abnormal acceleration when a rotational speed of the wire drum measured by the drum speed sensor is of and above a given value and a difference between a rotational speed of the wire drum and a rotational speed of the motor measured by the motor speed sensor is of and above a given value, and reducing a rotational speed of the motor temporarily; and

after that, accelerating the motor again for the reference speed.

2. The method to control a power slide device in accordance with claim 1, wherein the motor is accelerated at a lower rate in comparison with the initial acceleration employed under a normal state when the motor is accelerated again.

3. The method to control a power slide device in accordance with claim 1, wherein a condition that a rate of acceleration of the wire drum is of and above a given value is added in judging whether the slide door is in the abnormal acceleration or not.

4. The method to control a power slide device in accordance with claim 3, wherein the motor is accelerated at a lower rate in comparison with the initial acceleration employed under a normal state when the motor is accelerated again.

5. A method to control a power slide device comprising a motor, a wire drum for moving a slide door slidably mounted on a vehicle body in a door-opening direction or in a door-closing direction when rotated, a clutch mechanism disposed between the motor and the wire drum, a drum speed sensor for detecting a rotational speed of the wire drum, and a motor speed sensor for detecting a rotational speed of the motor, said method comprising the steps of:

accelerating the motor initially for a predetermined reference speed;

during the initial acceleration period, judging that the slide door is in a state of abnormal acceleration when a rotational speed of the wire drum measured by the drum speed sensor is of and above a given value and a difference between a rotational speed of the wire drum and a rotational speed of the motor measured by the motor speed sensor is of and above a given value and the difference of and above the given value has been detected consecutively, and reducing a rotational speed of the motor temporarily; and

after that, accelerating the motor again for the reference speed.

6. The method to control a power slide device in accordance with claim 5, wherein the motor is accelerated at a lower rate in comparison with the initial acceleration employed under a normal state when the motor is accelerated again.

7. A power slide device comprising:

a wire drum connected to an opening cable and a closing cable and sliding a slide door of a vehicle through winding and paying out the opening cable and the closing cable when rotated;

a motor to rotate the wire drum;

a clutch mechanism disposed between the motor and the wire drum;

a drum rotor rotated together with the wire drum all the times;

a drum speed sensor to detect rotation of the drum rotor;

a motor rotor rotated together with the motor all the times;

a motor speed sensor to detect rotation of the motor; and

a housing;

wherein the wire drum, the clutch mechanism, the drum rotor, and the motor rotor are installed in the housing;

wherein a shaft of the drum rotor and a shaft of the motor rotor are disposed in parallel relative to a support shaft of the wire drum;

wherein a control board including a control unit to perform control of the motor is attached to an outer surface of a cover plate of the housing; and

wherein the drum speed sensor and the motor speed sensor are disposed on the control board.

8. The power slide device in accordance with claim 7, wherein the drum rotor and the motor rotor are disposed so as to avoid overlap in an axial direction of the support shaft.

9. The power slide device in accordance with claim 7, wherein the drum speed sensor and the motor speed sensor are disposed in respective windows formed on the cover plate.

10. The power slide device in accordance with claim 9, wherein the drum rotor and the motor rotor are disposed so as to avoid overlap in an axial direction of the support shaft.

11. The power slide device in accordance with claim 7, wherein the drum rotor is configured to rotate together with the wire drum by way of the support shaft and the motor rotor is configured to rotate together with the motor by way of a worm wheel rotated by the motor.

12. The power slide device in accordance with claim 11, wherein the drum rotor and the motor rotor are disposed so as to avoid overlap in an axial direction of the support shaft.