WIPER DRIVE

• US 20130247323A1
• Filed: 10/25/2011
• Published: 09/26/2013
• Est. Priority Date: 12/01/2010
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Geubel, Paul, Sterns, Orlando, Seiert, Paul
• Granted Patent: US 9,254,820 B2
• Time in Patent Office: Days
• US Class Current: 15/250.31
• 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 1/58 for rear windows
• CPC Class Codes: B60S 1/583 including wiping devices

Abstract

The invention relates to a wiper drive for a rear window wiper of a motor vehicle, comprising a drive unit having a wiper shaft for the oscillating pivoting about a rotational axis, and having a protective cap surrounding the wiper shaft in an axial section, wherein the protective cap is connected to a housing of the drive unit by way of a radial press fit connection. The protective cap comprises a detent element engaging in a recess in the housing in order to absorb axial forces on the protective cap.

Claims

1. A wiper drive (100) for a rear window wiper of a motor vehicle (105), comprising:

a drive unit (110) having a wiper shaft (125) for pivoting in an oscillating manner about an axis of rotation (130);

a protective cap (135) which surrounds the wiper shaft (125) over an axial portion;

wherein the protective cap (135) is connected by means of a radial press connection to a housing (115) of the drive unit (110),

characterized in that

the protective cap (135) comprises a latching element (140) which engages in a cutout (145) in the housing (115) in order to absorb axial forces on the protective cap (135).

2. The wiper drive (100) as claimed in claim 1, characterized in that the latching element (140) is configured, after engaging in the cutout (145), to exert an axial prestress on the protective cap (135).

3. The wiper drive (100) as claimed in claim 1, characterized in that the latching element (140) has a hook portion (320) with an axial (345) and a radial (350) bearing surface in each case for bearing against a corresponding bearing surface (505, 510) in a region of the cutout (145) of the housing (115), and an angle between the axial (345) and the radial (350) bearing surface of the hook portion (320) is less than 90°

.

4. The wiper drive (100) as claimed in claim 1, characterized in that the latching element (140) comprises an elastically deformable spring portion (315), wherein the spring portion (315) comprises two webs (325, 330) which are separated from one another.

5. The wiper drive (100) as claimed in claim 1, characterized in that the latching element (140) comprises an elastically deformable spring portion (315), wherein the spring portion (315) comprises a first, radial portion (335) and a second, axial portion (340).

6. The wiper drive (100) as claimed in claim 1, characterized in that the protective cap (135) comprises a torque support (305) with a bearing surface (310), which extends in a circumferential direction of the protective cap (135), for bearing against a corresponding bearing surface (410) of the housing (115).

7. The wiper drive (100) as claimed in claim 1, characterized in that the protective cap (135) is formed in one piece with the latching element (140).

8. The wiper drive (100) as claimed in claim 6, characterized in that a plurality of latching elements (140) are provided at different radial angles on the protective cap (135).

9. The wiper drive (100) as claimed in claim 8, characterized in that the latching elements (140) and the torque support (305) are distributed uniformly over the circumference of the protective cap (135).