Transmission drive unit

• US 20030177854A1
• Filed: 12/16/2002
• Published: 09/25/2003
• Est. Priority Date: 01/12/2001
• Status: Abandoned Application

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Haussecker, Walter, Krauth, Marco
• Application Number:
  US10/221,297
• Publication Number:
  US 20030177854A1
• Time in Patent Office: Days
• US Class Current: 74/425
• 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: F16H 2057/02034 Gearboxes combined or connected with electric machines structural association with electric machines H02K7/116
• CPC Class Codes: F16H 57/029 characterised by means for sealing the gearboxes, e.g. to improve airtightness
• CPC Class Codes: F16H 57/031 characterised by covers or lids for gearboxes
• CPC Class Codes: F16H 57/039 Gearboxes for accommodating worm gears
• CPC Class Codes: H02K 5/08 Insulating casings
• 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

The invention relates to a transmission-drive unit (10), which has a housing (14) with an opening (26) and with a cap (34); at least two guide lugs (36) are disposed on the cap (34) and for closing the housing (14) are thrust under ribs (29) formed on the housing.

Claims

1. A transmission-drive unit (10), which has a housing (14) with an opening (26) and with a cap (34), characterized in that disposed on the cap (34) are at least two guide lugs (36), which for closing the housing (14) are thrust under ribs (29) formed on the housing.

2. The transmission-drive unit (10) of claim 1, characterized in that formed onto the housing (14) is a sealing face (30), against which the cap (34) is pressed via the ribs (29) and the guide lugs (36).

3. The transmission-drive unit (10) of one of claims 1 or 2, characterized in that the sealing face (30) on the housing (14) and/or the cap (34) on its inside is coated, at least in the outer circumferential region, with a rubberlike material (48).

4. The transmission-drive unit (10) of one of claims 1-3, characterized in that the cap (34) on its inside, at least in the outer circumferential region, is spray-coated with a rubberlike material (48), in particular a thermoplastic (48).

5. The transmission-drive unit (10) of one of claims 1-4, characterized in that the guide lugs (36) center the cap (34) relative to the sealing face (30) of the housing (14).

6. The transmission-drive unit (10) of one of claims 1-5, characterized in that the material thickness (50) of the guide lugs (36) and/or of the ribs (29) varies over their width (38, 62).

7. The transmission-drive unit (10) of one of claims 1-6, characterized in that the cap (34), after the closure, is fixed relative to the housing (14), in particular by means of detent lugs (56) or the like.

8. The transmission-drive unit (10) of one of claims 1-7, characterized in that the cap (34), after the closure, can be detached again without being destroyed, and at least the housing (14) is reusable.

9. The transmission-drive unit (10) of one of claims 1-8, characterized in that the cap (34) closes the housing (14) in watertight fashion.

10. The transmission-drive unit (10) of one of claims 1-9, characterized in that the housing (14), between the ribs (29), has recesses (32) into which the cap (34) can be inserted by the guide lugs (36) before the displacement.

11. The transmission-drive unit (10) of one of claims 1-10, characterized in that the cap (34) and the opening (26) are approximately circular, and the guide lugs (36) can be thrust under the ribs (29) by means of a rotation, in order to close the housing (14).

12. The transmission-drive unit (10) of claim 11, characterized in that the housing (14) has from 6 to 16 and in particular 12 ribs (29), and the cap (34) has from 6 to 16 and in particular 12 guide lugs (36).

13. The transmission-drive unit (10) of one of claims 1-12, characterized in that disposed perpendicular to the cap (34) is a shaft (16), on which a worm wheel (18) and a slaving element (22) are disposed, which are supported axially and/or radially by means of the cap (34).

14. The transmission-drive unit (10) of one of claims 1-13, characterized in that the shaft (16) is supported axially and/or radially by means of the cap (34).

15. The transmission-drive unit (10) of one of claims 1-14, characterized in that the cap (34) has a circular hole (42), which is sealed off from the slaving element (22) by means of the rubberlike material (48).

16. The transmission-drive unit (10) of one of claims 11-15, characterized in that the ratio of the length (39) of the guide lug (36) to the diameter (37) of the cap (34), and the ratio of the length (59) of the ribs (29) to the diameter (60) of the housing opening (26), are between 1:

50 and 5;

50, in particular approximately 3;

50.

17. The transmission-drive unit (10) of one of claims 1-16, characterized in that the transmission-drive unit (10) is a power window or sunroof drive (10).