Window opening and closing controller

• US 7,411,364 B2
• Filed: 03/21/2006
• Issued: 08/12/2008
• Est. Priority Date: 06/28/2005
• Status: Expired due to Fees

• Current Assignee: Omron Automotive Electronics Company Limited (Nidec Corporation)
• Original Assignee: Omron Corporation
• Inventors: Takahashi, Tomohiro
• Primary Examiner(s): Ro; Bentsu
• Application Number:
  US11/386,052
• Publication Number:
  US 20060293821A1
• Time in Patent Office: 875 Days
• Field of Search: 318264-266, 318/283, 318/286, 318/434, 318466-470, 388/903, 49/26, 49/28
• US Class Current: 318/286
• 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: E05Y 2400/10 Electronic control
• CPC Class Codes: E05Y 2400/564 sensing motor speed
• CPC Class Codes: E05Y 2400/58 Sensitivity setting or adjustment
• CPC Class Codes: E05Y 2600/46 in or on the wing
• CPC Class Codes: E05Y 2800/40 Protection E05Y2400/50, E05Y2400/52 take precedence
• CPC Class Codes: E05Y 2900/55 Windows
• CPC Class Codes: H02H 3/006 Calibration or setting of parameters
• 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
• CPC Class Codes: H02H 7/0858 by reversing, cycling or reducing the power supply to the motor
• CPC Class Codes: H02H 7/093 against increase beyond, or decrease below, a predetermined level of rotational speed centrifugal switches H01H35/10

Abstract

A window opening and closing controller for stably detecting jamming without having any influence on jamming load even when power voltage is changed is to be provided. In a window opening and closing controller for detecting jamming of a foreign substance on the basis of a comparing result of a changing amount of the rotational speed of a motor for opening and closing a window and a predetermined threshold value, and controlling the operation of the motor so as to open the window when there is jamming, the threshold value is constructed by a first threshold value at a normal time and a second threshold value as a reference gentler than this first threshold value. The threshold value is changed from the first threshold value to the second threshold value on the basis of the detection of closing of a door. The threshold value is returned from the second threshold value to the first threshold value on the basis of the detection of the rotation of the motor by a predetermined rotating amount in a state in which the threshold value is set to the second threshold value.

Claims

1. A window opening and closing controller comprising:

detecting means for detecting rotational speed of a motor for opening and closing a window;

judging means for judging whether or not a foreign substance is jammed into the window on the basis of a comparing result of a changing amount of the rotational speed detected by said detecting means and a predetermined threshold value; and

control means for controlling operations of said motor so as not to close the window when it is judged by said judging means that the foreign substance is jammed;

wherein said threshold value is set to a first threshold value or a second threshold value;

wherein the window opening and closing controller further comprises;

threshold value changing means for changing said threshold value from the first threshold value to the second threshold value on the basis of the detection of closing of an opening and closing portion of a door;

threshold value returning means for returning said threshold value from the second threshold value to the first threshold value on the basis of the detection of the rotation of said motor by a predetermined rotating amount in a state in which said threshold value is set to the second threshold value;

wherein the closing of said opening and closing portion is detected by an acceleration sensor,

said threshold value changing means changes said threshold value from the first threshold value to the second threshold value when said acceleration sensor detects a constant acceleration or more, and

said threshold value returning means returns said threshold value from the second threshold value to the first threshold value on the basis of the detection of the rotation of said motor by the predetermined rotating amount after said acceleration sensor does not detect the constant acceleration or more.