Wiper

• US 8,096,013 B2
• Filed: 11/15/2006
• Issued: 01/17/2012
• Est. Priority Date: 12/28/2005
• Status: Expired due to Fees

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Eschenbrenner, Nicolas, Kraus, Achim
• Primary Examiner(s): GRAHAM, GARY K
• Application Number:
  US12/159,055
• Publication Number:
  US 20080313842A1
• Time in Patent Office: 1,889 Days
• Field of Search: 152/503.1, 152/503.4, 152/503.51, 152/503.52, 403/359, 403/298, 403/3, 403/4, 403/93, 745/22, 745/19, 294/28
• US Class Current: 15/250.34
• CPC Class Codes: B60S 1/3418 with means for additionally adjusting the wiper arm working position with respect to the surface to be wiped
• CPC Class Codes: B60S 1/3459 the element being a mounting head and a shaft
• CPC Class Codes: Y10T 29/49718 Repairing
• CPC Class Codes: Y10T 29/49826 Assembling or joining
• CPC Class Codes: Y10T 403/559 Fluted or splined section
• CPC Class Codes: Y10T 403/7026 Longitudinally splined or fluted rod
• CPC Class Codes: Y10T 74/206 Adjustable

Abstract

The present invention relates to a wiper having a wiper arm (1) and a fastening element (3), the fastening element (3) being fastened on the wiper arm (1), and the fastening element (3) having a hub (4) which can be plugged onto a drive shaft (5). Precision alignment of the wiper relative to the drive shaft (5) is made possible in that the fastening element (3) is plugged into a cutout (2) in the wiper arm (1) in a form-fitting manner in one of at least two possible alignments. A wiper constructed in this way is, in addition, compact.

Claims

1. A wiper having a wiper arm (1) and having a fastening element (3), with the fastening element (3) being fastened to the wiper arm (1), and with the fastening element (3) having a hub (4) configured to be plugged onto a drive shaft (5) that merges into a screw which can be screwed into a nut for securing the fastening element and the wiper arm to the drive shaft, characterized in that the fastening element (3) is inserted in a form-fitting manner, in one of at least two possible alignments, into a cutout (2) in the wiper arm (1), in that the fastening element (3) has, at an outer edge, a knurling (8, 9) which engages into a corresponding knurling (10, 11) on an edge of the cutout (2), the outer edge of the fastening element (3) being positioned in facing relation with the edge of the cutout (2), the outer edge of the fastening element (3) having a portion with the knurling (8, 9) and another portion without a knurling, the portion with the knurling (8, 9) projecting from the portion without the knurling, the edge of the cutout (2) having a portion with the corresponding knurling (10, 11) and another portion without a corresponding knurling, the portion with the corresponding knurling (10, 11) being recessed into the portion without the corresponding knurling, and in that, in at least one alignment of the fastening element (3) in the cutout (2), a portion of the knurling (8, 9) on the fastening element (3) being disengaged from the corresponding knurling (10, 11) on the cutout (2).

2. The wiper as claimed in claim 1, characterized in that the fastening element (3) has, at the outer edge, two opposite knurlings (8, 9) which engage into two corresponding knurlings (10, 11) on an edge of the cutout (2).

3. The wiper as claimed in claim 2, characterized in that an edge of the hub (4) has a knurling (6) which can engage into a corresponding knurling (7) of the drive shaft (5).

4. The wiper as claimed in claim 1, characterized in that an edge of the hub (4) has a knurling (6) which can engage into a corresponding knurling (7) of the drive shaft (5).

5. The wiper as claimed in claim 1, characterized in that the fastening element (3) is pivotable about an axis, in that the knurling (8, 9) of the fastening element extends along an arc, and in that the portion of the outer edge of the fastening element (3) without a knurling extends substantially linearly from an end of the knurling (8,9) of the fastening element.

6. The wiper arm as claimed in claim 5, characterized in that the outer edge of the fastening element (3) has a first portion without a knurling extending substantially linearly from one end of the knurling (8,9) of the fastening element and a second portion without a knurling extending substantially linearly from another end of the knurling (8,9) of the fastening element.

7. The wiper as claimed in claim 1, characterized in that the fastening element (3) is pivotable about an axis, in that the corresponding knurling (10, 11) of the cutout extends along an arc, and in that the portion of the edge of the cutout (2) without a corresponding knurling extends substantially linearly from an end of the corresponding knurling (10,11) of the cutout.

8. The wiper as claimed in claim 7, characterized in that the edge of the cutout (2) has a first portion without a knurling extending substantially linearly from one end of the corresponding knurling (10,11) of the cutout, and a second portion without a corresponding knurling extending substantially linearly from another end of the corresponding knurling (10,11) of the cutout, the first portion and the second portion being substantially parallel.

9. The wiper as claimed in claim 8, characterized in that the knurling (8, 9) of the fastening element, extends along an arc, and in that the portion of the edge of the fastening element (3) without a knurling extends substantially linearly from an end of the of the knurling (8, 9) of the fastening element.

10. The wiper as claimed in claim 9, characterized in that the edge of the fastening element (3) has a first portion without a knurling extending substantially linearly from one end of the knurling (8,9) of the fastening element and a second portion without a knurling extending substantially linearly from another end of the knurling (8,9) of the fastening element, the first portion and the second portion being non-parallel.

11. The wiper as claimed in claim 1, characterized in that the portion of the outer edge of the fastening element (3) without the knurling and the portion of the edge of the cutout (2) without a corresponding knurling are positioned in spaced apart relation.

12. The wiper as claimed in claim 1, characterized in that the cutout (2) has a substantially rectangular shape.

13. A method for aligning a wiper having a wiper arm (1) and a fastening element (3), with the fastening element (3) being fastened to the wiper arm (1), and with the fastening element (3) having a hub (4) which is plugged in a form-fitting manner onto a drive shaft (5) that merges into a screw, the method comprising inserting the fastening element (3) in a form-fitting manner, in one of at least two possible alignments, into a cutout (2) in the wiper arm (1), and fastening the wiper arm to the drive shaft with a nut threaded onto the screw, in that the fastening element (3) has, at an outer edge, a knurling (8, 9) which engages into a corresponding knurling (10, 11) on an edge of the cutout (2), the outer edge of the fastening element (3) having a portion with the knurling (8, 9) and another portion without a knurling, the portion with the knurling (8, 9) projecting from the portion without the knurling, the edge of the cutout (2) having a portion with the corresponding knurling (10, 11) and another portion without a corresponding knurling, the portion with the corresponding knurling (10, 11) being recessed into the portion without the corresponding knurling, and in that inserting the fastening element (3) includes inserting the fastening element (3) with the outer edge of the fastening element (3) positioned in facing relation with the edge of the cutout (2) and in at least one alignment of the fastening element (3) in the cutout (2) with a portion of the knurling (8, 9) on the fastening element (3) disengaged from the corresponding knurling (10, 11) on the cutout (2).

14. The method for aligning a wiper as claimed in claim 13, characterized in that the fastening element (3) has, at the outer edge, two opposite knurlings (8, 9) which engage into two corresponding knurlings (10, 11) on the edge of the cutout (2).

15. The method for aligning a wiper as claimed in claim 14, characterized in that an edge of the hub (4) has a knurling (6) which engages into a corresponding knurling (7) of the drive shaft (5).

16. The method for aligning a wiper as claimed in claim 13, characterized in that an edge of the hub (4) has a knurling (6) which engages into a corresponding knurling (7) of the drive shaft (5).

17. A wiper assembly comprising a wiper arm (1), a drive shaft (5) and a fastening element (3), with the fastening element (3) being fastened to the wiper arm (1), and with the fastening element (3) having a hub (4) plugged onto the drive shaft (5), the drive shaft merging into a screw which can be screwed into a nut for securing the fastening element and the wiper arm to the drive shaft, wherein the fastening element (3) is inserted in a form-fitting manner, in one of at least two possible alignments, into a cutout (2) in the wiper arm (1), in that the fastening element (3) has, at an outer edge, a knurling (8, 9) which engages into a corresponding knurling (10, 11) on an edge of the cutout (2), the outer edge of the fastening element (3) being positioned in facing relation with the edge of the cutout (2), the outer edge of the fastening element (3) having a portion with the knurling (8, 9) and another portion without a knurling, the portion with the knurling (8, 9) projecting from the portion without the knurling, the edge of the cutout (2) having a portion with the corresponding knurling (10, 11) and another portion without a corresponding knurling, the portion with the corresponding knurling (10, 11) being recessed into the portion without the corresponding knurling, and in that, in at least one alignment of the fastening element (3) in the cutout (2), a portion of the knurling (8, 9) on the fastening element (3) being disengaged from the corresponding knurling (10, 11) on the cutout (2).

18. The wiper assembly as claimed in claim 17, characterized in that the fastening element (3) has, at the outer edge, two opposite knurlings (8, 9) which engage into two corresponding knurlings (10, 11) on the edge of the cutout (2).

19. The wiper assembly as claimed in claim 17, characterized in that an edge of the hub (4) has a knurling (6) which can engage into a corresponding knurling (7) of the drive shaft (5).

20. The wiper assembly as claimed in claim 17, and further comprising a nut threaded onto the screw for securing the fastening element and the wiper arm to the drive shaft.