Cap and seal for windshield wiper drive for vehicles

• US 7,989,995 B2
• Filed: 10/29/2007
• Issued: 08/02/2011
• Est. Priority Date: 12/29/2006
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: De Dias, Orlando Gabriel, Geubel, Paul, Reith, Michael
• Primary Examiner(s): Leung; Quyen
• Assistant Examiner(s): Andrews; Michael
• Application Number:
  US12/307,148
• Publication Number:
  US 20100001593A1
• Time in Patent Office: 1,373 Days
• Field of Search: 310/37, 310/36, 310/38, 310/75.R, 310/80, 310/85, 310/89, 180/53.8, 296/96.15
• US Class Current: 310/37
• CPC Class Codes: B60S 1/349 Means for mounting the wiper bearing to the vehicle body
• CPC Class Codes: B60S 1/3493 Means for mounting the wiper shaft in the wiper bearing
• CPC Class Codes: B60S 1/583 including wiping devices

Abstract

A windshield wiper drive (1) is provided for the output shaft (4) with a protective cap (15) across a longitudinal region. The protective cap (15) is supported between the terminal supports thereof against the drive shaft (4) and the drive housing (2) of the windshield wiper drive (1) in relation to the output shaft (4) via a supporting bearing (20).

Claims

1. A windshield wiper drive (1) for vehicles, comprising an output shaft (4) supported relative to a drive housing (2), the output shaft penetrating a protective cap (15) which is supported relative to the drive housing (2) and which has an end that is remote from the drive housing (2) and that sealingly bears against the output shaft (4), characterized in that the protective cap (15) is radially supported between its support relative to the drive housing (2) and its sealed connection (25) relative to the output shaft (4) via a support bearing (20);

and in that the support bearing (20) is formed by a supporting sleeve (21), the supporting sleeve (21) having an axially-extending sleeve portion with a sleeve outer surface and an annular collar (22) projecting radially beyond the sleeve portion and with a collar outer surface, the sleeve outer surface and the collar outer surface engaging an inner surface of the protective cap (15);

characterized in that the protective cap (15) in the region radially adjacent to the support bearing (20) is supported against an encompassing component relative to the protective cap (15).

2. The windshield wiper drive as claimed in claim 1, characterized in that the protective cap (15) is radially inwardly supported via the support bearing (20) on the output shaft (4).

3. The windshield wiper drive as claimed in claim 1, characterized in that the protective cap (15) is supported relative to the drive housing (2) on a housing neck (12) penetrated by the output shaft (4).

4. The windshield wiper drive as claimed in claim 1, characterized in that the support bearing (20) is axially secured by the protective cap (15).

5. The windshield wiper drive as claimed in claim 4, characterized in that the annular collar (22) is axially secured by the protective cap (15).

6. The windshield wiper drive as claimed in claim 5, characterized in that the annular collar (22) is secured between a shoulder (23) and a latching bead (24) of the protective cap (15).

7. The windshield wiper drive as claimed in claim 1, characterized in that one of a cover and a windshield, in particular rear windshield (18), is provided as an encompassing component.

8. The windshield wiper drive as claimed in claim 1, characterized in that a seal (19) located between the rear windshield (18) and the protective cap (15) is provided as an encompassing component.

9. The windshield wiper drive as claimed in claim 2, characterized in that the protective cap (15) is supported relative to the drive housing (2) on a housing neck (12) penetrated by the output shaft (4).

10. The windshield wiper drive as claimed in claim 9, characterized in that the support bearing (20) is axially secured by the protective cap (15).

11. The windshield wiper drive as claimed in claim 10, characterized in that the annular collar (22) is axially secured by the protective cap (15).

12. The windshield wiper drive as claimed in claim 11, characterized in that the annular collar (22) is secured between a shoulder (23) and a latching bead (24) of the protective cap (15).

13. The windshield wiper drive as claimed in claim 12, characterized in that one of a cover and a windshield, in particular rear windshield (18), is provided as an encompassing component.

14. The windshield wiper drive as claimed in claim 12, characterized in that a seal (19) located between the rear windshield (18) and the protective cap (15) is provided as an encompassing component.

15. A windshield wiper drive (1) for vehicles, comprising an output shaft (4) supported relative to a drive housing (2), the output shaft penetrating a protective cap (15) which is supported relative to the drive housing (2) and which has an end that is remote from the drive housing (2) and that sealingly bears against the output shaft (4), characterized in that the protective cap (15) is radially supported between its support relative to the drive housing (2) and its sealed connection (25) relative to the output shaft (4) via a support bearing (20) and characterized in that the protective cap (15), in the region radially adjacent to the support bearing (20), is supported against an encompassing component relative to the protective cap (15).

16. The windshield wiper drive as claimed in claim 15, characterized in that the support bearing (20) is axially secured by the protective cap (15).

17. The windshield wiper drive as claimed in claim 15, characterized in that the support bearing (20) is formed by an axially-extending supporting sleeve (21), the supporting sleeve (21) having an axially-extending sleeve portion and an annular collar (22) projecting radially beyond the sleeve portion.

18. The windshield wiper drive as claimed in claim 17, characterized in that the annular collar (22) axially secured by the protective cap (15) between a shoulder (23) and a latching bead (24) of the protective cap (15).