Wiper motor and method for the production of a wiper motor

Patent metadata

Field	Value
Publication number	US-10960853-B2
Application number	US-201616062508-A
Country	US
Kind code	B2
Filing date	Dec 16, 2016
Priority date	Dec 17, 2015
Publication date	Mar 30, 2021
Grant date	Mar 30, 2021

Abstract

The invention relates to a wiper motor (10) with a shaft (30) for driving a wiper arm (1), wherein the shaft (30) projects through an opening (31) of a housing (15) and in the region of the opening (31) is mounted radially in a bore (55) of at least one substantially sleeve-shaped element (40), and wherein the sleeve-shaped element (40) is fixed at least axially in the region of the housing (15). According to the invention, it is provided that the sleeve-shaped element (40) has at least two different cross-sections (41, 42), a first cross-section (41) which is designed to protrude axially through the opening (31) and a second cross-section (42) which is designed to be accommodated in an axially fixed manner within said opening (31).

First claim

The invention claimed is:

1. A wiper motor, comprising:
a shaft for driving a wiper arm, wherein the shaft projects through an opening of a housing and the shaft is mounted in an at least substantially sleeve-shaped element,
wherein the sleeve-shaped element is fixed at least axially in the housing,
wherein the sleeve-shaped element has at least two different cross-sections, including a first cross-section which protrudes axially through the opening and out of the housing, a second cross-section which is axially fixed within said opening, the second cross-section defining a radially outermost surface of the sleeve-shaped element, the first cross-section having an outer surface defined by a constant outer diameter along an axial length of the first cross-section, and
wherein the housing includes a guide section extending from an axial exterior surface of the housing away from the housing, the guide section supporting a portion of the first cross-section of the sleeve-shaped element;
wherein the sleeve-shaped element has at least one sealing element for the shaft, and wherein the at least one sealing element is located at the first cross-section within a radial interior of the first cross-section.

2. The wiper motor according to claim 1 , wherein the opening in the housing is constructed as a cylindrical opening within the guide section extending along a longitudinal axis of the sleeve-shaped element.

3. The wiper motor according to claim 2 , wherein a clearance fit is formed between the sleeve-shaped element and the opening of the housing.

4. The wiper motor according to claim 1 , wherein the opening in the housing forms a fixing section for the second cross-section of the sleeve-shaped element, and wherein said fixing section has at least one recess projecting radially outwards, said at least one recess cooperates in a formfitting manner with at least one mirror-inverted projection formed on the second cross-section.

5. The wiper motor according to claim 4 , wherein the at least one recess in the opening originates from a face side of the opening.

6. The wiper motor according to claim 5 , wherein the second cross-section with the at least one projection on the sleeve-shaped element is formed on an axial end region of the sleeve-shaped element.

7. The wiper motor according to claim 1 , wherein the sleeve-shaped element is formed as a plastic injection moulded part.

8. The wiper motor according to claim 1 , wherein the at least one sealing element is arranged in a mount formed on an inner wall of the sleeve-shaped element.

9. The wiper motor according to claim 8 , wherein the at least one sealing element is axially secured in the mount by a fastening element.

10. The wiper motor according to claim 8 , wherein the at least one sealing element is injected around by the material of the sleeve-shaped element.

11. The wiper motor according to claim 1 , wherein the housing in the installed state of the sleeve-shaped element forms at least indirectly an axial stop in a direction opposed to a mounting direction of the sleeve-shaped element into the opening of the housing.

12. The wiper motor according to claim 1 , wherein the housing is a gear housing consisting of metal, and that the sleeve-shaped element is formed with a region projecting out from the housing so as to be arranged in an outer region of a vehicle.

Assignees

• Valeo Systemes Dessuyage

Inventors

• Kapitza Harald
• Stefani Siegfried

Classifications

• F16C23/02

  Sliding-contact bearings · CPC title

• B60S1/3495

  Means for mounting the drive mechanism to the wiper shaft · CPC title

• B60S1/3493 Primary

  Means for mounting the wiper shaft in the wiper bearing · CPC title

• F16C2326/09

  Windscreen wipers, e.g. pivots therefore · CPC title

• B60S1/166

  characterised by the combination of a motor-reduction unit and a mechanism for converting rotary into oscillatory movement · CPC title