Wiper blade

• US 8,370,987 B2
• Filed: 09/23/2008
• Issued: 02/12/2013
• Est. Priority Date: 11/22/2007
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Ritt, Jean-Marc
• Primary Examiner(s): Glessner, Brian
• Assistant Examiner(s): MATTEI, BRIAN DAVID
• Application Number:
  US12/680,866
• Publication Number:
  US 20100218333A1
• Time in Patent Office: 1,603 Days
• Field of Search: 152/502.01, 152/504.3, 152/504.4, 152/503.61, 152/503.2, 152/504.51, 152/504.8
• US Class Current: 15/250.201
• CPC Class Codes: B60S 1/381 Spoilers mounted on the squeegee or on the vertebra
• CPC Class Codes: B60S 1/3855 by welding, gluing or the like
• CPC Class Codes: B60S 1/3877 embedded in the squeegee
• CPC Class Codes: B60S 2001/3836 characterised by cross-sectional shape

Abstract

The invention relates to a wiper blade (10) in a flat beam construction, having a wiper strip (12) and a single spring rail (20, 64, 68) serving as the carrier element, and a spoiler (22) connected to the head strip (18) of the wiper strip (12), wherein a connecting element (24) having a joint part (30) is disposed in the center region of the wiper blade (10). The invention proposes that the head strip (18) have a hollow profile that is open in the direction of the spoiler (22), on the longitudinal sides of which guide profiles (40) are disposed having open grooves (42) facing each other, in which the spring rail (20, 64, 68) is embedded.

Claims

1. A wiper blade (10) of flat bar construction having a wiper strip (12) and a single spring rail (20, 64, 68) serving as carrier element, together with a spoiler (22), which is connected to a head strip (18) of the wiper strip (12), a connecting element (24) having an articulation part (30) being arranged in a central area of the wiper blade (10), characterized in that the head strip (18) has a portion defining a hollow profile which is open towards the spoiler (22) and on each longitudinal side of which a guide profile (40) is connected, each guide profile (40) having an open groove (42) facing one another, and in which the spring rail (20, 64, 68) is embedded, the portion of the head strip (18) and the guide profiles (40) being formed of different materials.

2. The wiper blade (10) as claimed in claim 1, characterized in that the guide profiles (40) have outer longitudinal sides having thereon ribs (44), on which the spoiler (22) is guided and retained by mating profiles (58).

3. The wiper blade (10) as claimed in claim 2, characterized in that the ribs (44) have outer edges and thickenings (46) at their outer edges, which fit in grooves (60) of the mating profiles (58) having undercuts (62).

4. The wiper blade (10) as claimed in claim 3, characterized in that the mating profiles (58) are composed of a different material from the spoiler (22) on which the mating profiles (58) are mounted.

5. The wiper blade (10) as claimed in claim 4, characterized in that the head strip (18) comprises a connecting part (48) of U-shaped cross section open towards the spring rail (20, 64, 68) between the guide profiles (40) on the one hand and a tipping web (16) on the other.

6. The wiper blade (10) as claimed in claim 5, characterized in that the spoiler (22) has an inner reinforcing wall (56), which connects an area on the outflow side (54) in proximity to the mating profile (58) to an area in proximity to the opposite mating profile (58).

7. The wiper blade (10) as claimed in claim 6, characterized in that the connecting element (24) has a base (28) with two side walls (26) with which to accommodate the articulation part (30), the base (28) having a flat area (38), which runs approximately centrally between the side walls (26) and projects towards the spring rail (20, 64, 68), to which it is connected by one of beveled insetting, riveting, screwing, welding and adhesive bonding.

8. The wiper blade (10) as claimed in claim 7, characterized in that the spring rail (64), at least in the area of the connecting element (24) has lateral edges (66), which are angled transversely to the remaining part.

9. The wiper blade (10) as claimed in claim 7, characterized in that the spring rail (68) has two side parts (70), which lie in one plane parallel to the articulation part (30), whilst a flat central part (72) projects from the side parts.

10. The wiper blade (10) as claimed in claim 2, characterized in that the guide profiles (40) or the mating profiles (58) are composed of a different material from the associated components (12, 22) on which the guide profiles (40) or the mating profiles (58) are mounted.

11. The wiper blade (10) as claimed in claim 10, characterized in that the wiper strip (12) and the spoiler (22) are produced together with the guide profiles (40) and the mating profiles (58), respectively, in one extrusion process.

12. The wiper blade (10) as claimed in claim 2, characterized in that the spoiler (22) has an inner reinforcing wall (56), which connects an area on the outflow side (54) in proximity to the mating profile (58) to an area in proximity to the opposite mating profile (58).

13. The wiper blade (10) as claimed in claim 1, characterized in that the head strip (18) comprises a connecting part (48) of U-shaped cross section open towards the spring rail (20, 64, 68) between the guide profiles (40) on the one hand and a tipping web (16) on the other.

14. The wiper blade (10) as claimed in claim 1, characterized in that the connecting element (24) has a base (28) with two side walls (26) with which to accommodate the articulation part (30), the base (28) having a flat area (38), which runs approximately centrally between the side walls (26) and projects towards the spring rail (20, 64, 68), to which it is connected by beveled insetting, riveting, screwing, welding or adhesive bonding.

15. The wiper blade (10) as claimed in claim 1, characterized in that the spring rail (64), at least in the area of the connecting element (24) has lateral edges (66), which are angled transversely to the remaining part.

16. The wiper blade (10) as claimed in claim 1, characterized in that the spring rail (68) has two side parts (70), which lie in one plane parallel to the articulation part (30), whilst a flat central part (72) projects from the side parts.

17. The wiper blade (10) as claimed in claim 16, characterized in that the flat central part (72) projects towards the connecting element (24).

18. The wiper blade (10) as claimed in claim 1, characterized in that the spring rail (20) has a width, and in that, along the width of the spring rail (20), a first portion of the head strip (18) abuts the spring rail (20) and a second portion of the head strip (18) is spaced from the spring rail (20).

19. The wiper blade (10) as claimed in claim 18, characterized in that the spoiler (22) has an inner reinforcing wall (56) spaced from the spring rail (20).