Open-close body control apparatus

• US 9,461,462 B2
• Filed: 06/24/2015
• Issued: 10/04/2016
• Est. Priority Date: 06/24/2014
• Status: Active Grant

• Current Assignee: Omron Automotive Electronics Company Limited (Nidec Corporation)
• Original Assignee: Omron Automotive Electronics Company Limited (Nidec Corporation)
• Inventors: Nagahama, Katsushige
• Primary Examiner(s): REDMAN, JERRY E
• Application Number:
  US14/748,586
• Publication Number:
  US 20150372480A1
• Time in Patent Office: 468 Days
• Field of Search: 49/26, 49/28
• US Class Current: 1/1
• CPC Class Codes: E05F 15/41 Detection by monitoring transmitted force or torque E05F15/48 takes precedence; Safety couplings with activation dependent upon torque or force, e.g. slip couplings
• CPC Class Codes: E05F 15/659 Control circuits therefor
• CPC Class Codes: E05Y 2400/336 of the angular type
• CPC Class Codes: E05Y 2400/354 End positions
• CPC Class Codes: E05Y 2400/56 by using speed sensors
• CPC Class Codes: H02H 7/0851 for motors actuating a movable member between two end positions, e.g. detecting an end position or obstruction by overload signal

Abstract

A motor is driven to rotate in a closing direction in an ordinary region other than a full close position immediately ahead region. An interposition determination unit determines whether or not interposition occurs while a windowpane is closing. If the interposition determination unit determines that interposition occurs, the motor is driven in a reverse direction to open the windowpane by a predetermined amount. The interposition determination unit continuously determines interposition after the closing windowpane enters the full close position immediately ahead region. If the determination unit determines that the interposition occurs while the windowpane is closing in the full close position immediately ahead region, the control unit stops driving the motor to stop the windowpane.

Claims

1. An open-close body control apparatus comprising:

a control unit configured to control driving an actuator configured to open and close an open-close body;

a position detection unit configured to detect an open-close position of the open-close body;

a physical quantity detection unit configured to detect a physical quantity indicating a state of the driven actuator; and

a determination unit configured to determine whether or not there is interposition of a foreign matter by the open-close body, in accordance with the physical quantity detected by the physical quantity detection unit and a predetermined interposition threshold;

wherein the determination unit determines the interposition in an ordinary region other than a full close position immediately ahead region while the open-close body is closing, and the control unit reverses a drive direction of the actuator to open the open-close body if the determination unit determines that the interposition occurs,

wherein the determination unit continuously determines the interposition after the open-close body enters the full close position immediately ahead region, and

wherein if the determination unit determines that the interposition occurs while the open-close body is closing in the full close position immediately ahead region, the control unit stops driving the actuator to stop the open-close body.

2. The open-close body control apparatus according to claim 1, wherein the full close position immediately ahead region is closed to a full close position to prevent interposition of the foreign matter by the open-close body.

3. The open-close body control apparatus according to claim 1,

wherein if the open-close position of the open-close body detected by the position detection unit is different from a preset full close position by at least a predetermined value when the determination unit determines that the interposition occurs and the open-close body stops in the full close position immediately ahead region, the control unit again controls driving the actuator to close the open-close body and the determination unit determines the interposition.

4. The open-close body control apparatus according to claim 1,

wherein the interposition threshold for a case where the open-close position of the open-close body is in the full close position immediately ahead region is set to be different from the interposition threshold for a case where the open-close position of the open-close body is in the ordinary region to hardly cause the determination unit to determine that interposition occurs.

5. The open-close body control apparatus according to claim 1,

further comprising:

a calculation unit configured to calculate a variation of the physical quantity detected by the physical quantity detection unit;

wherein the determination unit determines whether or not the interposition occurs in accordance with a result of comparison between the variation of the physical quantity calculated by the calculation unit and the interposition threshold.

6. The open-close body control apparatus according to claim 1,

wherein the actuator is a motor, and

wherein the physical quantity detection unit detects rotational speed of the motor as the physical quantity.

7. The open-close body control apparatus according to claim 1,

wherein the actuator is a motor, and

wherein the physical quantity detection unit detects current flowing to the motor as the physical quantity.

8. The open-close body control apparatus according to claim 1,

wherein the open-close body is a windowpane of a vehicle, and

wherein the open-close body control apparatus is a power window control apparatus.