Plastic articulated arm

• US 8,060,976 B2
• Filed: 10/16/2006
• Issued: 11/22/2011
• Est. Priority Date: 11/09/2005
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Mayer, Stephan, Ritt, Jean-Marc
• Primary Examiner(s): GRAHAM, GARY K
• Application Number:
  US12/092,735
• Publication Number:
  US 20080289135A1
• Time in Patent Office: 1,863 Days
• Field of Search: 152/503.51, 152/503.2, 152/503.1, 152/504.6, 152/504.4, 152/504.3
• US Class Current: 15/250.351
• CPC Class Codes: B60S 1/40 Connections between blades and arms
• CPC Class Codes: B60S 1/4038 for arms provided with a channel-shaped end
• CPC Class Codes: B60S 1/4064 the channel-shaped end being provided with protrusions on, or holes in, the side walls to create a pivot
• CPC Class Codes: B60S 2001/409 characterised by the arm or connecting part mounted on the arm presenting a shaped opening for bearing the pivot axis

Abstract

The invention is based on a plastic articulated arm (10) with a connection part (12) for a wiper blade formed at its outer end by the side walls (14), wherein the connection part (12) can engage in a hook-in box (42) of the wiper blade and is provided in the side walls (14), which serve to guide the wiper blade laterally, with an open hub (16) for a pivot pin (44) of the wiper blade. It is proposed that a window (32) be provided at least in one side wall (14) of the connection part (12) in the longitudinal direction of the articulated arm (10), in which window is arranged a spring tongue (34) which projects outwardly beyond the side wall (14).

Claims

1. A plastic articulated arm (10) comprising a connection part (12) for a wiper blade formed at its outer end by lateral walls (14), the connection part (12) being able to engage in a mounting box (42) of the wiper blade and having, in the lateral walls (14) which serve for the lateral guiding of the wiper blade, an open hub (16) for a pivot pin (44) of the wiper blade, characterized in that in at least one lateral wall (14) of the connection part (12) in the longitudinal direction of the articulated arm (10) an aperture (32) is provided, in which a spring tongue (34) is arranged projecting outwardly beyond the lateral wall (14), an outwardly projecting lateral surface of the spring tongue (34) engaging against an inner surface of an associated lateral wall of the mounting box (42).

2. The articulated arm (10) as claimed in claim 1, characterized in that on an inner face of the spring tongue (34) a stop (30) is arranged at a short distance therefrom, in order to limit the spring path of the spring tongue (34).

3. The articulated arm (10) as claimed in claim 1, characterized in that the spring tongue (34) at its free end comprises a lateral bearing surface (38) which projects outwardly relative to the remaining lateral contour of the spring tongue (34).

4. The articulated arm (10) as claimed in claim 1, comprising an adapter (46) for the wiper blade inserted into the connection part (12), characterized in that the spring tongue (34) is provided on the adapter (46) together with a spring bar (36).

5. A plastic articulated arm (10) comprising a connection part (12) for a wiper blade formed at its outer end by lateral walls (14), the connection part (12) being able to engage in a mounting box (42) of the wiper blade and having, in the lateral walls (14) which serve for the lateral guiding of the wiper blade, an open hub (16) for a pivot pin (44) of the wiper blade, characterized in that in at least one lateral wall (14) of the connection part (12) in the longitudinal direction of the articulated arm (10) an aperture (32) is provided, in which a spring tongue (34) is arranged proiectinq outwardly beyond the lateral wall (14), and

characterized in that the open hub (16) is arranged between the aperture (32) and a front face (22) at the end of the articulated arm (10), and the aperture (32) is open at its lower boundary, the spring tongue (34) being fastened via a spring bar (36) to a boundary of the aperture (32) extending transversely to the longitudinal direction of the articulated arm (10).

6. The articulated arm (10) as claimed in claim 5, characterized in that the spring bar (36) is displaceable in a longitudinal guide relative to the boundary of the aperture (32).

7. The articulated arm (10) as claimed in claim 6, characterized in that in the longitudinal direction on both sides of the aperture (32) fixed guide faces (26) are provided on the lateral wall (14), which are connected via transverse webs (24) to fixed guide faces (26) on the other lateral wall (14).

8. The articulated arm (10) as claimed in claim 7, characterized in that on the inner face of the spring tongue (34) a stop (30) is arranged at a short distance therefrom, in order to limit the spring path of the spring tongue (34).

9. The articulated arm (10) as claimed in claim 8, characterized in that the spring tongue (34) at its free end comprises a lateral bearing surface (38) which projects outwardly relative to the remaining lateral contour of the spring tongue (34).

10. The articulated arm (10) as claimed in claim 9, comprising an adapter (46) for the wiper blade inserted into the connection part (12), characterized in that the spring tongue (34) is provided on the adapter (46) together with the spring bar (36).

11. A plastic articulated arm (10) comprising a connection part (12) for a wiper blade formed at its outer end by lateral walls (14), the connection part (12) being able to engage in a mounting box (42) of the wiper blade and having, in the lateral walls (14) which serve for the lateral guiding of the wiper blade, an open hub (16) for a pivot pin (44) of the wiper blade, characterized in that in at least one lateral wall (14) of the connection part (12) in the longitudinal direction of the articulated arm (10) an aperture (32) is provided, in which a spring tongue (34) is arranged proiectinq outwardly beyond the lateral wall (14), and

characterized in that in the longitudinal direction on both sides of the aperture (32) fixed guide faces (26) are provided on the lateral wall (14), which are connected via transverse webs (24) to fixed guide faces (26) on the other lateral wall (14).