Integrated actuator

• US 6,927,514 B2
• Filed: 08/18/2003
• Issued: 08/09/2005
• Est. Priority Date: 08/18/2003
• Status: Expired due to Fees

• Current Assignee: Flextronics Automotive Inc
• Original Assignee: C-Mac Invotronics Inc.
• Inventors: Nesic, Zoran
• Primary Examiner(s): LE, DANG D
• Application Number:
  US10/642,304
• Publication Number:
  US 20050040715A1
• Time in Patent Office: 722 Days
• Field of Search: 310/71, 310/89, 310/83
• US Class Current: 310/89
• CPC Class Codes: H02K 11/38 Control circuits or drive circuits associated with geared commutator motors of the worm-and-wheel type
• CPC Class Codes: H02K 5/225 Terminal boxes or connection arrangements specially adapted for submersible motors H02K5/132
• CPC Class Codes: H02K 7/1166 comprising worm and worm-wheel structural association with bearings specially adapted for worm gear drives H02K7/081
• CPC Class Codes: Y10T 74/19828 Worm

Abstract

An integrated, unitary actuator formed of a frame having structure for connecting an actuator motor, a structure for supporting a power translation member, and a structure for enclosing a control circuit. Optionally, a clearance structure of the frame receives a shaft of the actuator motor, and a passage from the control circuit enclosure to the clearance structure provides access for electrical power and sensor information between the control circuit to the actuator motor. Further optional, a cover plate over the structure for enclosing the control circuit secures the control circuit and provides a single-receptacle connection to the vehicle.

Claims

1. An integral actuator, comprising:

a frame having a first at least partially closed chamber a second at least partially enclosed chamber, and a passage connecting said first chamber with said second chamber;

an actuator motor with a power output shaft, secured to said frame such that said power output shaft extends into said first chamber;

a control circuit mounted in said second chamber, said control circuit having circuitry to transfer an externally supplied electrical power from within said second chamber to within said first chamber, said control circuit having circuitry to receive a sensor signal transferred from within said first chamber to within said second chamber; and

a power translation member connected to said output shaft.

2. An integral actuator according to claim 1, further comprising a cover secured to said frame such that said second chamber is substantially fully enclosed.

3. An integral actuator according to claim 2, further including a plurality of conductors extending through said cover, arranged such that when said cover is secured to said frame at least one of said plurality of conductors makes electrical contact with said control circuit.

4. An integral actuator according to claim 3 wherein said cover is removably secured.

5. An integral actuator according to claim 2 wherein said cover is removably secured.

6. An integral actuator according to claim 5 wherein a structure of said frame associated with said second chamber includes at least one flexible clip receptacle, said cover includes at least one flexible clip, and wherein said cover is secured to said frame to form said substantially enclosed second chamber by said at least one flexible clip engaging with said at least one flexible clip receptacle.

7. An integral actuator according to claim 2, wherein said second chamber includes a support structure, and further comprises a control circuit supported by said support structure, wherein said control circuit is secured by a surface of said second chamber and by said cover.

8. An integral actuator according to claim 2, wherein said cover includes a receptacle support for receiving an external connector, and a plurality of pins extending through said cover in alignment with said receptacle support, and wherein said control circuit includes electrical contacts, constructed and arranged such that when said cover is secured to said frame said pins contact said electrical contacts.

9. An integral actuator according to claim 8, wherein said second chamber includes a support structure, and further comprises a control circuit supported by said support structure, wherein said control circuit is secured by a surface of said second chamber and by said cover.

10. An integral actuator according to claim 2, wherein said cover includes a receptacle support for receiving an external connector, and a terminal clearance hole extending through said cover in alignment with said receptacle support, and wherein said control circuit includes electrical conducting members extending in direction such that when said cover is secured to said frame said electrical conducting members extend through said terminal clearance hole.

11. An integral actuator according to claim 10, wherein said second chamber includes a support structure, and further comprises a control circuit supported by said support structure, wherein said control circuit is secured by a surface of said second chamber and by said cover.

12. An integral actuator according to claim 2, wherein said cover includes a connector through hole, and further comprising a connects extending through said through hole, said connector including a receptacle support for receiving an external connector, and a plurality of pins extending, each having an external connection terminal above a surface of said cover and an internal connection below said surface, said wherein said control circuit includes electrical contacts, constructed and arranged such that when said cover is secured to said frame said internal connection points contact respective ones of said electrical contacts electrical.

13. An integral actuator according to claim 12, wherein said second chamber includes a support structure, and further comprises a control circuit supported by said support structure, wherein said control circuit is secured by a surface of said second chamber and by said cover.

14. An integral actuator according to claim 1, wherein the control circuit is contained on a printed circuit board that is mounted substantially perpendicular to the output shaft of the actuator motor.

15. An integral actuator according to claim 1 further comprising:

a pair of rails formed on the frame within the second chamber; and

wherein the control circuit is contained on a printed circuit board that is received by the pair of rails such that the printed circuit board is mounted substantially perpendicular to the output shaft of the actuator motor.

16. An integral actuator according to claim 1 further comprising:

a printed circuit board on which is contained the control circuit;

a sensor mounted on the printed circuit board;

a power connector mounted to the printed circuit board; and

wherein the printed circuit board is mounted within the second chamber such that the printed circuit board at least partially passes through the passage and into the first chamber and such that the sensor and the power connector are disposed within the first chamber.

17. An integral actuator according to claim 16, wherein the sensor is a position sensor that detects the alternating magnetic field generated by a ring magnet attached to the output shaft.