Rotary and linear translation actuator performing multi-functions in an automobile

• US 6,075,298 A
• Filed: 10/09/1997
• Issued: 06/13/2000
• Est. Priority Date: 10/09/1997
• Status: Expired due to Fees

• Current Assignee: Lear Automotive Dearborn, Incorporated (Lear Corporation)
• Original Assignee: Lear Automotive Dearborn, Incorporated (Lear Corporation)
• Inventors: Maue, H. Winston, Miller, Robin Mihekun, Tilli, Christopher R.
• Primary Examiner(s): Ramirez, Nestor
• Assistant Examiner(s): TAMAI, KARL I
• Application Number:
  US08/947,972
• Time in Patent Office: 978 Days
• Field of Search: 310/12, 310/20, 310/80, 310/83, 310/78, 310/112, 310/209, 49/72, 74/89.14, 74/425, 15/205.16, 318/466
• US Class Current: 310/12.14
• CPC Class Codes: B60S 1/0491 Additional elements being fixed on wipers or parts of wipers not otherwise provided for, e.g. covers, antennae or lights
• CPC Class Codes: B60S 1/166 characterised by the combination of a motor-reduction unit and a mechanism for converting rotary into oscillatory movement
• CPC Class Codes: B60S 1/583 including wiping devices
• CPC Class Codes: E05B 81/13 a single actuator for driving a lock and additional vehicle components, e.g. window wipers or window lifters
• CPC Class Codes: E05B 81/25 Actuators mounted separately from the lock and controlling the lock functions through mechanical connections
• 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: H02K 7/125 magnetically influenced

Abstract

A multi-functional electronic actuator for actuating multiple independent systems on an automotive vehicle includes a magnet assembly, a rotor mounted within the magnet assembly having an armature and a shaft that rotates when the armature is energized, a device for translating the rotor with respect to the magnet assembly, and devices for actuating a first independent system on the automotive vehicle utilizing the rotational motion of the shaft and for actuating a second independent system on the automotive vehicle utilizing the translation of the rotor shaft with respect to the magnet assembly. Two methods for translating the rotor with respect to the magnet assembly are described as well as various linkages that may be used to actuate the independent systems on the automotive vehicle.

Claims

1. An automotive device comprising:

a first independent automotive system having a rotatable input member;

a second independent automotive system;

a third independent automotive system;

a housing adapted to be mounted in an automobile;

a magnet assembly disposed in said housing;

a rotor rotatably mounted adjacent said magnet assembly, said rotor having an armature fixed to a shaft for rotation therewith, said shaft engaging said rotatable input member of said first independent automotive system;

a first set of brushes electrically coupled with said armature, said first set of brushes being selectively energized to rotate said armature and said shaft about a rotation axis to rotatably drive said first independent automotive system;

a second set of brushes electrically coupled with said armature, said second set of brushes being selectively energized to linearly drive said shaft of said rotor to linearly actuate said second independent automotive system; and

a coupling member coupled to said shaft of said rotor for rotation and translation therewith, said coupling member linearly engagable to rotatably actuate said third independent automotive system upon energization of one of said sets of brushes.

2. The automotive device according to claim 1 wherein said input member of said first independent automotive system is a gear and said shaft includes a threaded portion driving said gear when said rotor rotates in said forward direction.

3. The automotive device according to claim 1, further comprising:

a cam disposed on a surface of said coupling member, said cam actuating said third independent automotive system in response to rotation of said rotor.

4. The automotive device according to claim 1 wherein said first independent automotive system is a winshield wiper mechanism.

5. The automotive device according to claim 1 wherein said second independent automotive system is a window lock mechanism.

6. The automotice device according to claim 1 wherein said third independent automotive system is a latch.

7. An automotive device for actuating at least two independent systems of a vehicle, said automotive device comprising:

a housing;

a magnet assembly disposed in said housing;

a rotor rotatably mounted adjacent said magnet assembly, said rotor having an armature fixed to a shaft for rotation therewith;

a first set of brushes electrically coupled with said armature, said first set of brushes being selectively energized to rotate said armature and said shaft about a rotation axis, said rotation of said shaft adapted to rotatably drive a component of a first of the independent automotive systems;

a second set of brushes electrically coupled with said armature, said second set of brushes being selectively energized to linearly translate said shaft of said rotor relative to said magnet assembly to linearly actuate a component of a second of the independent automotive systems; and

a retainer positionable in an engaged and a disengaged position, said retainer being operable in said engaged position to retain said rotor in a predetermined axial position, said retainer being operable in said disengaged position to enable said rotor to linearly translate relative to said magnet assembly in response to energization of one of said sets of brushes.

8. The automotive device according to claim 7 wherein said retainer comprises:

a pin engagable with said shaft of said rotor; and

an electrical actuation device coupled with said pin, said electrical actuation device selectively engaging said pin with said shaft to prevent said rotor from linearly translating.

9. The automotive device according to claim 8 wherein said electrical actuation device is a solenoid.

10. The automotive device according to claim 7 wherein said component of said first of the independent automotive systems is a gear and said shaft includes a threaded portion adapted to drivingly engage said gear such that rotation of said shaft rotates said gear to drive said first of the independent automotive systems.

11. The automotive device according to claim 7, further comprising:

a spring being disposed in said housing, said spring biasing said shaft in an untranslated position.

12. The automotive device according to claim 11, further comprising:

a collar being mounted to an end of said shaft, said collar being slidably disposed in said housing adjacent said spring.