Wiper blade

• US 8,839,483 B2
• Filed: 04/30/2009
• Issued: 09/23/2014
• Est. Priority Date: 06/16/2008
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Roodt, Inigo Op't, De Block, Peter, Beelen, Hans, Fatan, Bart, Windmolders, Eric
• Primary Examiner(s): GRAHAM, GARY K
• Application Number:
  US12/999,429
• Publication Number:
  US 20110247165A1
• Time in Patent Office: 1,972 Days
• Field of Search: 152/504.3, 152/503.61, 152/504.4, 152/504.6, 152/504.51, 152/502.01, 152/503.2
• US Class Current: 15/250.43
• CPC Class Codes: B60S 1/3851 Mounting of connector to blade assembly
• CPC Class Codes: B60S 1/3858 with protrusions cooperating with holes
• CPC Class Codes: B60S 1/3881 in additional element, e.g. spoiler
• CPC Class Codes: B60S 1/3884 Wire-shaped section
• CPC Class Codes: B60S 1/3887 Mounting of end caps
• CPC Class Codes: B60S 2001/3829 characterised by the material of the squeegee or coating thereof

Abstract

The invention relates to a wiper blade (10) having a support composed of a plurality of support components (12, 14, 16, 18, 20) that are joined to one another by welding, gluing, or the like and have at least one longitudinal channel (34) incorporating a pre-curved elastic support element (36) and two parallel retaining rails (28) separated by a longitudinal gap (32), for a wiper strip (38), wherein a connecting element (50) is arranged in the center region of the wiper blade (10) for the articulated connection to a wiper arm. It is proposed that at least two support elements in the form of spring bars (36) having a round cross-section are provided in corresponding separate longitudinal channels (34), between which the retaining rails (28) are arranged.

Claims

1. A wiper blade (10) with a support which is composed of a plurality of support parts (12, 14, 16, 18, 20) which have a plurality of longitudinal channels (34) each with at least one pre-curved elastic supporting element (36, 64), and have two parallel holding rails (28), which are separated by a longitudinal gap (32), for a wiper strip (38), wherein a connection element (50) for the articulated connection to a wiper arm is arranged in a central region of the wiper blade (10), wherein one of said longitudinal channels (34) is arranged on each of the outer longitudinal sides of the holding rails (28), said longitudinal channels having a common top wall (26) with the holding rails (28) and each of said longitudinal channels having, with an associated holding rail (28), a common partition (33) running parallel to an outer side wall (30), an outer boundary of the holding rails (28) lying transversely with respect to the side wall (30) within a corresponding boundary of the longitudinal channels (34) in which a respective supporting element (36, 64) is mounted, and wherein intermediate pieces (20) are provided between a central support part (14) and in each case two further support parts (12, 16) arranged on each side with respect to said central support part, said intermediate pieces likewise having longitudinal channels (34) for the supporting elements (36, 64) and having joint elements (22) for the articulated connection of the connection element (50).

2. The wiper blade (10) as claimed in claim 1, characterized in that the supporting elements are spring bars (36) with round cross sections or spring rails (64) with rectangular cross sections, the wide sides (66) of which run transversely with respect to the side walls (30) of the longitudinal channels (34).

3. The wiper blade (10) as claimed in claim 2, characterized in that one of the intermediate pieces (20) is fixedly connected to the supporting elements (36, 64).

4. The wiper blade (10) as claimed in claim 3, characterized in that an end cap (18) which is fixedly connected to the supporting elements (36, 64) is provided on the supporting elements (34) at each end of the wiper blade (10).

5. The wiper blade (10) as claimed in claim 4, characterized in that the connection element (50) sits fixedly on a bridge part (52) which, by means of lateral cheeks (54), surrounds the intermediate pieces (20) and is mounted by means of hubs (56) on the joint elements (22).

6. The wiper blade (10) as claimed in claim 5, characterized in that the wiper strip (38) has a head strip (46) with two longitudinal grooves (47) which are separated by a web (48) and in which the holding rails (28) engage, the supporting elements (34) running in the longitudinal channels (34) to a side of the head strip (46), and a wiper lip (40) being connected to the head strip (46) via a tilting web (42).

7. The wiper blade (10) as claimed in claim 6, characterized in that the wiper strip (38) is produced in a two-material extrusion process, a part surrounded by the holding rails (28) and the web (48) between the longitudinal grooves (47) being composed of a stiffer material than a remainder of the wiper strip (38).

8. The wiper blade (10) as claimed in claim 3, characterized in that the support parts (12, 14, 16, 18, 20) are connected to one another by welding or adhesive bonding.

9. The wiper blade (10) as claimed in claim 8, characterized in that the connection element (50) sits fixedly on a bridge part (52) which, by means of lateral cheeks (54), surrounds the intermediate pieces (20) and is mounted by means of hubs (56) on the joint elements (22).

10. The wiper blade (10) as claimed in claim 9, characterized in that the wiper strip (38) has a head strip (46) with two longitudinal grooves (47) which are separated by a web (48) and in which the holding rails (28) engage, the supporting elements (34) running in the longitudinal channels (34) to a side of the head strip (46), and a wiper lip (40) being connected to the head strip (46) via a tilting web (42).

11. The wiper blade (10) as claimed in claim 10, characterized in that the wiper strip (38) is produced in a two-material extrusion process, a part surrounded by the holding rails (28) and the web (48) between the longitudinal grooves (47) being composed of a stiffer material than a remainder of the wiper strip (38).

12. The wiper blade (10) as claimed in claim 1, characterized in that one of the intermediate pieces (20) is fixedly connected to the supporting elements (36, 64).

13. The wiper blade (10) as claimed in claim 1, characterized in that an end cap (18) which is fixedly connected to the supporting elements (36, 64) is provided on the supporting elements (34) at each end of the wiper blade (10).

14. The wiper blade (10) as claimed in claim 1, characterized in that the support parts (12, 14, 16, 18, 20) are connected to one another by welding, or adhesive bonding.

15. The wiper blade (10) as claimed in claim 1, characterized in that the connection element (50) sits fixedly on a bridge part (52) which, by means of lateral cheeks (54), surrounds the intermediate pieces (20) and is mounted by means of hubs (56) on the joint elements (22).

16. The wiper blade (10) as claimed in claim 1, characterized in that the wiper strip (38) has a head strip (46) with two longitudinal grooves (47) which are separated by a web (48) and in which the holding rails (28) engage, the supporting elements (34) running in the longitudinal channels (34) to a side of the head strip (46), and a wiper lip (40) being connected to the head strip (46) via a tilting web (42).

17. The wiper blade (10) as claimed in claim 16, characterized in that the wiper strip (38) is produced in a two-material extrusion process, a part surrounded by the holding rails (28) and the web (48) between the longitudinal grooves (47) being composed of a stiffer material than a remainder of the wiper strip (38).