Control device for adjusting equipment elements belonging to a motor vehicle

• US 6,553,866 B1
• Filed: 04/25/2001
• Issued: 04/29/2003
• Est. Priority Date: 07/09/1999
• Status: Expired due to Fees

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Maennle, Erik, Ursel, Eckhard
• Primary Examiner(s): Parekh, Ankur
• Application Number:
  US09/786,850
• Time in Patent Office: 734 Days
• Field of Search: 297/362.11, 297/330, 248/419, 248/429, 747/24, 746/65.G, 746/65.GD, 746/65.F
• US Class Current: 74/665.00G
• CPC Class Codes: B60N 2/0224 Non-manual adjustments, e.g. with electrical operation
• CPC Class Codes: B60N 2/02246 Electric motors therefor
• CPC Class Codes: B60N 2/02253 characterised by the transmission between the electric motor and the seat or seat parts
• CPC Class Codes: B60N 2/0296 Central command actuator to selectively switch on or engage one of several special purpose circuits or mechanisms
• CPC Class Codes: H02K 7/1163 where at least two gears have non-parallel axes without having orbital motion
• CPC Class Codes: Y10T 74/19047 Worm-type gearing
• CPC Class Codes: Y10T 74/19079 Parallel

Abstract

A drive system for adjusting parts of motor vehicle equipment, in particular parts of a vehicle seat, having an electrical drive motor (10) which includes a drive motor shaft (12) and a worm (14) disposed on that shaft, also having a mechanical adjusting device, which includes at least one worm wheel (16) cooperating with the worm (14), one coupling unit, and one power takeoff unit. It is proposed that the coupling unit has at least two couplings (28), which are disposed on at least one auxiliary shaft (18) connected in a manner fixed against relative rotation to the at least one worm wheel (16), and which independently of one another couple the drive motor (10) to at least two power takeoff elements (54) of the power takeoff unit.

Claims

1. A drive system for adjusting parts of a motor vehicle, having an electrical drive motor (10) which includes a drive motor shaft (12) and a worm (14) disposed on that shaft, also having a mechanical adjusting device, which includes at least one worm wheel (16) cooperating with the worm (14), one coupling unit, and one power takeoff unit, characterized in that

the coupling unit has at least two couplings (28), which are disposed on at least one auxiliary shaft (18) connected in a manner fixed against relative rotation to the at least one worm wheel (16), and which independently of one another couple the drive motor (10) to at least two power takeoff elements (54) of the power takeoff unit which are arranged radially to the at least one auxiliary shaft (18).

2. The drive system of claim 1, characterized in that the at least two couplings (28) each have one first coupling element (30) and one second coupling element (32).

3. The drive system of claim 2, characterized in that each of the first coupling elements (30) is connected in a manner fixed against relative rotation to the at least one auxiliary shaft (18).

4. The drive system of claim 2, characterized in that each of the second coupling elements (32) is connected rotatably to the at least one auxiliary shaft (18).

5. The drive system of claims 2, characterized in that the at least two couplings (28) have coupling actuators (40) which are bringable into operative connection with the first coupling element (30) each.

6. The drive system of claim 1, characterized in that the drive motor (10) is disposed centrally.

7. The drive system of claim 1, characterized in that a supervisory control unit (68) is connected to the coupling actuators (40).

8. A drive system for adjusting parts of a motor vehicle, having an electrical drive motor (10) which includes a drive motor shaft (12) and a worm (14) disposed on that shaft, also having a mechanical adjusting device, which includes at least one worm wheel (16) cooperating with the worm (14), one coupling unit, and one power takeoff unit, characterized in that

the coupling unit has at least two couplings (28), which are disposed on at least one auxiliary shaft (18) connected in a manner fixed against relative rotation to the at least one worm wheel (16), and which independently of one another couple the drive motor (10) to at least two power takeoff elements (54) of the power takeoff unit, the at least two couplings (28) each having one coupling actuator (40) for actuating the couplings (28).

9. A drive system for adjusting parts of a motor vehicle, having an electrical drive motor (10) which includes a drive motor shaft (12) and a worm (14) disposed on that shaft, also having a mechanical adjusting device, which includes at least one worm wheel (16) cooperating with the worm (14), one coupling unit, and one power takeoff unit, characterized in that

the coupling unit has at least two couplings (28), which are disposed on at least one auxiliary shaft (18) connected in a manner fixed against relative rotation to the at least one worm wheel (16), and which independently of one another couple the drive motor (10) to at least two power takeoff elements (54) of the power takeoff unit, wherein the at least two couplings (28) are disposed on the respective two ends of the at least one auxiliary shaft (18).

10. A drive system for adjusting parts of a motor vehicle, having an electrical drive motor (10) which includes a drive motor shaft (12) and a worm (14) disposed on that shaft, also having a mechanical adjusting device, which includes at least one worm wheel (16) cooperating with the worm (14), one coupling unit, and one power takeoff unit, characterized in that

the coupling unit has at least two couplings (28), which are disposed on at least one auxiliary shaft (18) connected in a manner fixed against relative rotation to the at least one worm wheel (16), and which independently of one another couple the drive motor (10) to at least two power takeoff elements (54) of the power takeoff unit, the at least two couplings (28) each have one first coupling element (30) and one second coupling element (32), and the at least two couplings (28) have coupling actuators (40) disposed adjacent to the first coupling elements (30) on the two ends of the at least one auxiliary shaft (18).

11. A drive system for adjusting parts of a motor vehicle, having an electrical drive motor (10) which includes a drive motor shaft (12) and a worm (14) disposed on that shaft, also having a mechanical adjusting device, which includes at least one worm wheel (16) cooperating with the worm (14), one coupling unit, and one power takeoff unit, characterized in that

the coupling unit has at least two couplings (28), which are disposed on at least one auxiliary shaft (18) connected in a manner fixed against relative rotation to the at least one worm wheel (16), and which independently of one another couple the drive motor (10) to at least two power takeoff elements (54) of the power takeoff unit, and the at least two power takeoff elements (54) of the power takeoff unit are power takeoff shafts (62) connected to power takeoff worm wheels (60).

12. The drive system of claim 11, characterized in that the at least two couplings (28) each have one first coupling element (30) and one second coupling element (32) and the second coupling elements (32) each have a set of worm teeth, which are operatively connected to the power takeoff worm wheels (60).

13. The drive system of claim 11, characterized in that the power takeoff worm wheels (60) have different diameters.

14. A drive system for adjusting parts of a motor vehicle equipment, in particular parts of a vehicle seat, having an electrical drive motor (10) which includes a drive motor shaft (12) and a worm (14) disposed on that shaft, also having a mechanical adjusting device, which includes at least one worm wheel (16) cooperating with the worm (14), one coupling unit, and one power takeoff unit, characterized in that

the coupling unit has at least two couplings (28), which are disposed on at least one auxiliary shaft (18) connected in a manner fixed against relative rotation to the at least one worm wheel (16), and which independently of one another couple the drive motor (10) to at least two power takeoff elements (54) of the power takeoff unit, the at least two couplings (28) each have one coupling actuator (40) for actuating the couplings (28) and a supervisory control unit (68) is connected to the coupling actuators (40).