Express window lift motor shutdown

• US 4,962,337 A
• Filed: 02/23/1990
• Issued: 10/09/1990
• Est. Priority Date: 03/31/1988
• Status: Expired due to Term

• Current Assignee: Delphi Technologies, Inc. (BorgWarner Incorporated)
• Original Assignee: Eaton Corp. (Wisconsin) (Eaton Corporation PLC.)
• Inventors: Creed, Brian T.
• Primary Examiner(s): Ro, Bentsu
• Application Number:
  US07/485,809
• Time in Patent Office: 228 Days
• Field of Search: 318/256, 318/264, 318/265, 318/266, 318/280, 318/282, 318/286, 318/430, 318/434, 318/466, 318/467, 318/468, 318/469, 318/470, 318/267, 49/26, 49/28, 307/9.1, 307/10.1
• US Class Current: 318/280
• CPC Class Codes: E05F 15/00 Power-operated mechanisms for wings motor-operated accessories in locks for completing closing or initiating opening of a wing E05B17/00
• 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 15/695 Control circuits therefor
• CPC Class Codes: E05Y 2400/45 Control modes
• CPC Class Codes: E05Y 2400/854 Switches
• CPC Class Codes: E05Y 2400/856 Actuation thereof
• CPC Class Codes: E05Y 2400/86 by hand
• CPC Class Codes: E05Y 2800/73 Single use of elements
• CPC Class Codes: E05Y 2900/55 Windows
• 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 7/093 against increase beyond, or decrease below, a predetermined level of rotational speed centrifugal switches H01H35/10
• CPC Class Codes: H02P 7/05 by means of electronic switching

Abstract

A circuit for controlling bi-directional operation of a vehicle window lift motor having a toroidal coil sensing counter-emf perturbations in the motor current line. An EXPRESS mode switch, upon momentary actuation, latches an electronic switch to operate a relay to provide continuous motor rotation for lowering the window. Subsequent momentary switch actuation unlatches the electronic switch to cut interrupt window motor current. Window lift motor stall is detected by a toroidal coil which senses loss of motor line perturbations and unlatches the electronic switch to open circuit the motor relay.

Claims

1. A control system for an electrically lifted vehicle door window comprising:

(a) motor means operable for forward and reverse rotation and adapted for raising and ldowering a door window in a vehicle;

(b) coil means disposed adjacent a power lead of said motor means and operative to sense motor current;

(c) first circuit means receiving a signal from said coil means and operative in response thereto for switching off said motor means when said coil means senses a motor current stall condition;

(d) first switch means operable upon user actuation in one direction to a first tactilely senses position to switch power to said motor means only so long as said first switch means is held in said first position, said first switch means further actuatable in said one direction to a second tactilely sensed position;

(e) second switch means user actuatable in a direction opposite said one direction to a third position;

(f) second circuit means responsive to instantaneous actuation of said first switch means to said second position and operative thereupon to provide continuous energization of said motor means for down limit lowering of said window upon release of said instantaneous second position actuation; and

,

(g) actuation of said second switch means to said third position thereupon to reverse polarity to said second circuit means to disable said continuous motor energization.

2. The control system defined in claim 1, wherein said first circuit means includes comparator means.

3. The control system defined in claim 2, wherein said second circuit means includes relay means.

4. The control system defined in claim 2, therein said second circuit means includes relay means and comparator means.

5. The control system defined in claim 1, wherein said third circuit means includes relay means, solid state switch means and comparator means.