Wiper blade, in particular for a motor vehicle

Patent metadata

Field	Value
Publication number	US-12240418-B2
Application number	US-202218078139-A
Country	US
Kind code	B2
Filing date	Dec 9, 2022
Priority date	Dec 10, 2021
Publication date	Mar 4, 2025
Grant date	Mar 4, 2025

Abstract

A wiper blade ( 10 ), in particular for a motor vehicle, includes a wiper strip ( 16 ) that is held between a first spring rail portion ( 34 ) and a second spring rail portion ( 36 ) by a fastening portion ( 24 ), and includes a substantially triangular lip portion ( 18 ). A cavity portion ( 22 ) is provided between the fastening portion ( 24 ) and the lip portion ( 18 ), at the lower wall ( 44 ) of which cavity portion, on the side facing the lip portion ( 18 ), at least one guide shoulder ( 56 ) for guiding the lip portion ( 18 ) is arranged.

First claim

What is claimed is:

1. A wiper blade ( 10 ) that extends along a longitudinal axis, the wiper blade ( 10 ) comprising a wiper strip ( 16 ) that is held by a fastening portion ( 24 ), the wiper strip ( 16 ) having a substantially triangular lip portion ( 18 ), wherein a cavity portion ( 22 ) is provided between the fastening portion ( 24 ) and the lip portion ( 18 ) along a perpendicular axis (S) that is perpendicular to the longitudinal axis, wherein the cavity portion ( 22 ) includes a lower wall ( 44 ) that faces the lip portion ( 18 ) and extends perpendicular to the perpendicular axis (S), wherein the lower wall ( 44 ) includes a first guide shoulder ( 56 ) for guiding the lip portion ( 18 ) and a second guide shoulder ( 56 ) for guiding the lip portion ( 18 ), wherein the first guide shoulder ( 56 ) and the second guide shoulder ( 56 ) are each grooves or indentations located along a lower surface of the lower wall ( 44 ), wherein the cavity portion ( 22 ) includes an upper wall ( 42 ) located opposite the lower wall ( 44 ) along the perpendicular axis (S), wherein the cavity portion ( 22 ) further includes side walls ( 46 ) that each extend between, and perpendicular to, the upper wall ( 42 ) and the lower wall ( 44 ), wherein the upper wall ( 42 ), the lower wall ( 44 ), and the side walls ( 46 ) define a hollow cavity, wherein the hollow cavity is fully enclosed by the upper wall ( 42 ), the lower wall ( 44 ), and the side walls ( 46 ) along an entire longitudinal length of the wiper blade ( 10 ) when viewed along the longitudinal axis, wherein a damping portion ( 50 ) is provided between the cavity portion ( 22 ) and the fastening portion ( 24 ), wherein the damping portion ( 50 ) includes wings or tabs ( 52 ) which extend from the upper wall ( 42 ) of the cavity portion-( 22 ) and into retaining grooves ( 32 ) that are configured to receive spring rail portions ( 34 , 36 ), wherein the lip portion ( 18 ) includes a first edge ( 60 ), wherein the first edge ( 60 ) of the lip portion ( 18 ) is sized and shaped and positioned relative to the first guide shoulder ( 56 ) so as to engage into the first guide shoulder ( 56 ) and contact the lower wall ( 44 ) when the lip portion ( 18 ) is tilted relative to the cavity portion ( 22 ) in a first direction, wherein the lip portion ( 18 ) includes a second edge ( 60 ), wherein the second edge ( 60 ) of the lip portion ( 18 ) is sized and shaped and positioned relative to the second guide shoulder ( 56 ) so as to engage into the second guide shoulder ( 56 ) and contact the lower wall ( 44 ) when the lip portion ( 18 ) is tilted relative to the cavity portion ( 22 ) in a second direction that is opposite the first direction, wherein the hollow cavity has a first width that extends between the side walls ( 46 ), and wherein the first guide shoulder ( 56 ) and the second guide shoulder ( 56 ) are separated by a second width that is less than the first width.

2. The wiper blade ( 10 ) according to claim 1 , wherein the cavity portion ( 22 ) is substantially rectangular in cross-section.

3. The wiper blade ( 10 ) according to claim 1 , wherein the fastening portion ( 24 ) is substantially T-shaped.

4. The wiper blade ( 10 ) according to claim 1 , wherein a first and/or second spring rail portion ( 34 , 36 ) is/are arranged between the cavity portion ( 22 ) and an upper beam ( 26 ) of the fastening portion ( 24 ).

5. The wiper blade ( 10 ) according to claim 1 , wherein the lip portion ( 18 ) is mirror-symmetrical in cross-section and has an incision ( 38 ) on each side.

6. The wiper blade ( 10 ) according to claim 5 , further comprising a tilting connecting piece ( 30 ) between the cavity portion ( 22 ) and the lip portion ( 18 ), wherein at least one further tilting connecting piece ( 40 ) is formed by the incisions ( 38 ).

7. The wiper blade ( 10 ) according to claim 5 , wherein the incisions ( 38 ) have a cut width (SB) of less than 1 millimeter.

8. The wiper blade ( 10 ) according to claim 5 , wherein the incisions ( 38 ) have a cut width (SB) of less than 0.5 millimeter.

9. The wiper blade ( 10 ) according to claim 1 , wherein the wiper blade ( 10 ) is a motor vehicle wiper blade ( 10 ).

10. The wiper blade ( 10 ) according to claim 1 , wherein the upper wall ( 42 ) includes shoulders ( 54 ) that are spaced below at least a portion of the wings or tabs ( 52 ).

11. The wiper blade ( 10 ) according to claim 1 , wherein each of the wings or tabs ( 52 ) is thicker at a free end than at an end coupled directly to the upper wall ( 42 ).

12. The wiper blade ( 10 ) according to claim 11 , wherein a perpendicular distance between an uppermost end of one of the wings or tabs ( 52 ) and an upper beam ( 26 ) of the fastening portion ( 24 ) is configured to be smaller than a thickness of one of the spring rail portions ( 34 , 36 ), such that the spring rail is configured to be resiliently held in the retaining groove ( 32 ).

13. The wiper blade ( 10 ) according to claim 1 , wherein the fastening portion ( 24 ) includes an upper beam ( 26 ) having a width along a direction perpendicular to the perpendicular axis (S), wherein the wings or tabs ( 52 ) include a first wing or tab ( 52 ) and a second wing or tab ( 52 ), wherein a distance between the first wing or tab ( 52 ) and the second wing or tab ( 52 ) is greater than the width of the upper beam ( 26 ).

14. The wiper blade ( 10 ) according to claim 1 , further comprising a tilting connecting piece ( 30 ) between the cavity portion ( 22 ) and the lip portion ( 18 ), and wherein the lip portion ( 18 ) is positioned entirely below the cavity portion ( 22 ) along the perpendicular axis (S).

15. The wiper blade ( 10 ) according to claim 1 , wherein the cavity portion defines a rectangular cross-sectional opening.

16. The wiper blade ( 10 ) according to claim 1 , wherein the perpendicular axis (S) is an axis of symmetry.

17. The wiper blade ( 10 ) according to claim 1 , wherein the cavity is rectangular as viewed along the longitudinal axis.

Assignees

• Bosch Gmbh Robert

Inventors

• Angyal Adam
• Wilms Christian
• Ekermans Marcel
• Bubba Marcello
• Gotzen Nicolaas
• Kuypers Peter
• Belmans Thomas
• Buseyne Wim

Classifications

• B60S1/3879 Primary

  placed in side grooves in the squeegee · CPC title

• B60S2001/3836

  characterised by cross-sectional shape · CPC title

• B60S1/3875

  rectangular section · CPC title

• B60S1/38 Primary

  Wiper blades {(provided with liquid spreading means B60S1/524; provided with gas spreading means B60S1/546)} · CPC title