Wiper blade

Patent metadata

Field	Value
Publication number	US-9511747-B2
Application number	US-201514815089-A
Country	US
Kind code	B2
Filing date	Jul 31, 2015
Priority date	Oct 9, 2009
Publication date	Dec 6, 2016
Grant date	Dec 6, 2016

Abstract

The invention is based on a wiper blade ( 12 ) with an elongate, spring-elastic carrying element ( 36 ) which is precurved in a concave fashion with respect to a vehicle window ( 22 ) and has two spring rails ( 52, 66 ) which run parallel to one another in a plane, and having a wiper strip ( 24 ) which is held with a web ( 34 ) of its head strip ( 30 ) between the spring rails ( 52, 66 ) via the carrier element ( 36 ), said spring rails ( 52, 66 ) being inserted in longitudinal grooves ( 32 ) on both sides of the web ( 34 ), wherein the wiper strip ( 24 ) is secured in the longitudinal direction ( 20 ) relative to the carrier element ( 36 ) at least close to one of the ends of said wiper strip ( 24 ). It is proposed that the spring rails ( 52, 66 ) have, at the longitudinal sides facing one another in their end regions, clips ( 60, 74 ) with cutters ( 62, 76 ) which, in the mounted state, cut into adjoining walls of the longitudinal grooves ( 32 ).

First claim

What is claimed is:

1. A wiper blade ( 12 ) having an elongate, spring-elastic carrying element ( 36 ), which is pre-curved in a concave fashion with respect to a vehicle window ( 22 ) and has two spring rails ( 52 , 66 ) which run parallel to one another in a plane, and having a wiper strip ( 24 ) which is held with a web ( 34 ) of a head strip ( 30 ) between the spring rails ( 52 , 66 ) via the carrying element ( 36 ), said spring rails being inserted in longitudinal grooves ( 32 ) on both sides of the web ( 34 ), wherein the wiper strip ( 24 ) has ends and is secured in the longitudinal direction ( 20 ) relative to the carrying element ( 36 ) at least close to one of the ends of said wiper strip, characterized in that the spring rails ( 52 , 66 ) have, at inner longitudinal sides facing one another in end regions, clips ( 60 , 74 ) with cutters ( 62 , 76 ), which, in a mounted state, cut into adjoining walls of the longitudinal grooves ( 32 ), wherein the two spring rails ( 52 , 66 ) include recesses ( 54 , 68 ) along outer longitudinal sides of the spring rails ( 52 , 66 ), the recesses ( 54 , 58 ) being exposed laterally outwardly along the longitudinal sides such that the recesses are not fully enclosed by the spring rails ( 52 , 66 ), wherein the wiper blade ( 12 ) further includes a bracket ( 116 ) with a planar top portion that extends between the two spring rails ( 52 , 66 ), wherein the bracket ( 116 ) includes two claws ( 120 ) that extend from opposite ends of the planar top portion, wherein the two claws ( 120 ) press and hold the spring rails ( 52 , 66 ) together, wherein the two claws ( 120 ) extend into the recesses ( 54 , 68 ) in the spring rails ( 52 , 66 ) and interlock with the spring rails ( 52 , 66 ), and wherein portions ( 122 ) of the claws ( 120 ) extend underneath the spring rails ( 52 , 66 ) and directly contact lower surfaces of the spring rails ( 52 , 66 ).

2. The wiper blade ( 12 ) according to claim 1 , characterized in that a connecting piece ( 102 ) comprising lateral guide profiles ( 104 ) is guided on the spring rails ( 52 , 66 ) and presses said spring rails together, wherein centering blocks ( 106 ) on the guide profiles ( 104 ) engage in recesses ( 54 , 68 ) on outer longitudinal sides of the spring rails ( 52 , 66 ) in the mounted state.

3. The wiper blade ( 12 ) according to claim 2 , characterized in that the guide profiles ( 104 ) are connected to one another by means of a top wall ( 108 ), which has a longitudinal channel for the head strip ( 30 ) of the wiper strip ( 24 ), wherein a window ( 110 ) is provided in the top wall ( 108 ) and wherein a spring tongue ( 112 ) originating at a delimitation projects in said window, said spring tongue comprising a wedge shaped piece ( 114 ) on a free end thereof and in the mounted state being pressed by the end cap ( 44 ) against the head strip ( 30 ).

4. The wiper blade ( 12 ) according to claim 2 , characterized in that the inner edges on an end face of the guide profiles ( 104 ) are chamfered.

5. The wiper blade ( 12 ) according to claim 1 , characterized in that the portions ( 122 ) of the claws ( 120 ) that extend underneath the spring rails ( 52 , 66 ) are elongate noses ( 122 ) oriented along a longitudinal direction ( 20 ), and wherein the planar top portion extends in an elongate manner along a direction that is perpendicular to the longitudinal direction ( 20 ).

6. The wiper blade ( 12 ) according to claim 5 , wherein the two claws ( 120 ) include arms that extend alongside the spring rails ( 52 , 66 ) within the recesses ( 54 , 68 ), and wherein the elongate noses ( 122 ) extend perpendicularly from the arms.

7. The wiper blade ( 12 ) according to claim 6 , wherein the bracket ( 116 ) comprises additional claws ( 118 ) which are located on end faces thereof and are oriented in a longitudinal direction ( 20 ) and which in the mounted state penetrate into a side of the head strip ( 30 ) facing said additional claws ( 118 ).

8. The wiper blade ( 12 ) according to claim 6 , wherein one of the arms and one of the elongate noses ( 122 ) forms an L-shaped structure that is received in part underneath a portion of one of the spring rails ( 52 , 66 ).

9. The wiper blade ( 12 ) according to claim 1 , characterized in that the bracket ( 116 ) comprises additional claws ( 118 ) which are located on end faces thereof and are oriented in a longitudinal direction ( 20 ) and which in the mounted state penetrate into a side of the head strip ( 30 ) facing said additional claws ( 118 ).

10. The wiper blade ( 12 ) according to claim 1 , characterized in that a holding clip ( 124 ) encompasses ends of the spring rails ( 52 , 66 ) outside of recesses ( 54 , 68 ) on outer longitudinal sides of the spring rails with inwardly bent limbs ( 126 ) thereof, wherein a gudgeon ( 128 ) penetrates the head strip ( 30 ) in the mounted state.

11. The wiper blade ( 12 ) according to claim 1 , characterized in that limbs ( 126 ) of a holding clip ( 124 ) are guided through apertures ( 130 ) and ends of said limbs are bent towards an outside.

12. The wiper blade ( 12 ) according to claim 1 , characterized in that limbs ( 136 ) of a bracket clip ( 134 ) are guided through apertures ( 130 ) on ends of the spring rails ( 52 , 66 ) and fir tree shaped profiles ( 38 ) interlock with the apertures ( 130 ).

13. The wiper blade ( 12 ) according to claim 1 , characterized in that the spring rails ( 52 , 66 ) are braced by a bridge shaped connecting part ( 140 ) having a low material thickness, wherein feet ( 144 ) are adhesively bonded or welded to the spring rails ( 52 , 66 ) and noses ( 146 ) are integrally formed on a center section ( 142 ) of the connecting part ( 140 ), said noses engaging with the head strip ( 30 ) in the mounted state.

14. The wiper blade ( 12 ) according to claim 1 , characterized in that an arrow-shaped connecting part ( 148 ) is guided transversely to the web ( 34 ) and through the same between a part of the head strip ( 30 ) projecting over the spring rails ( 52 , 66 ) and the spring rails ( 52 , 66 ) and is connected to said spring rails ( 52 , 66 ) by means of adhesive bonding or welding.

15. The wiper blade ( 12 ) according to claim 1 , further comprising a connecting element ( 14 ) that couples the wiper blade ( 12 ) to a wiper arm.

16. The wiper blade ( 12 ) according to claim 15 , wherein the bracket ( 116 ) is disposed adjacent an end of the wiper blade, and wherein the connecting element ( 14 ) is disposed in a central region of the wiper blade.

Assignees

• Bosch Gmbh Robert

Inventors

• Criel Paul
• Beelen Hans
• De Block Peter
• Saevels Peter
• Aznag Mohamed
• Windmolders Eric
• Bonroy Jan

Classifications

• B60S1/3881

  in additional element, e.g. spoiler · CPC title

• B60S1/3886

  End caps · CPC title

• B60S2001/382

  the backing strip being an essentially planar reinforcing strip, e.g. vertebra · CPC title

• B60S2001/3822

  characterised by additional means to prevent longitudinal sliding of squeegee in support, e.g. clips · CPC title

• B60S1/3891 Primary

  with locking device · CPC title