Wiper arm device, wiper arm, and screen wiper system

Patent metadata

Field	Value
Publication number	US-11577698-B2
Application number	US-202016904736-A
Country	US
Kind code	B2
Filing date	Jun 18, 2020
Priority date	Jun 18, 2019
Publication date	Feb 14, 2023
Grant date	Feb 14, 2023

Abstract

A wiper arm device for a wiper arm (20), having at least one fastening part (44) which is provided for connecting at least one articulation part (38) of the wiper arm (20) to a drive shaft (24) of a wiper drive (16), wherein the fastening part (44) has at least one fastening boss (46) for fastening the fastening part (44) to the drive shaft (24) and at least one articulation boss (48) for fastening the articulation part (38) to the fastening part (44).

First claim

The invention claimed is:

1. A wiper arm device for a wiper arm ( 20 ), the wiper arm device comprising at least one fastening part ( 44 ) which is configured to connect at least one articulation part ( 38 ) of the wiper arm ( 20 ) to a drive shaft ( 24 ) of a wiper drive ( 16 ), wherein the fastening part ( 44 ) has at least one fastening boss ( 46 ) for fastening the fastening part ( 44 ) to the drive shaft ( 24 ) and at least one articulation boss ( 48 ) for fastening the articulation part ( 38 ) to the fastening part ( 44 ), characterized in that the fastening part ( 44 ) has at least one line receptacle ( 52 ), wherein the wiper arm device includes a line unit ( 36 ) disposed within the line receptacle ( 52 ), wherein the line receptacle ( 52 ) includes a first force-fit or form-fit element ( 64 ) which is disposed within an interior of the fastening part ( 44 ) and is configured to at least partially fix or hold the line unit ( 36 ) on the fastening part ( 44 ), wherein the line receptacle ( 52 ) includes a second force-fit or form-fit element ( 64 ) which is disposed within an interior of the fastening part ( 44 ) and is configured to at least partially fix or hold the line unit ( 36 ) on the fastening part, wherein the line unit ( 36 ) includes two line elements ( 60 , 62 ), and has a connection element ( 84 , 86 ) for connecting in a releasable manner the two line elements ( 60 , 62 ), wherein the connection element ( 84 , 86 ) is disposed in the line receptacle ( 52 ) and is a separate element from the first force-fit or form-fit element ( 64 ) and the second force-fit or form-fit element ( 64 ), wherein the connection element ( 84 , 86 ) is disposed longitudinally between the first force-fit or form-fit element ( 64 ) and the second force-fit or form-fit element ( 64 ) along a longitudinal direction, wherein each of the first force-fit or form-fit element ( 64 ), the second force-fit or form-fit element ( 64 ), and the connection element ( 84 , 86 ) is spaced longitudinally from the fastening boss ( 46 ), wherein the first force-fit or form-fit element ( 64 ) includes a first set of walls that extend at oblique angles relative to the longitudinal direction and define a first conduit opening ( 76 ) within the interior of the fastening part ( 44 ) for guiding the line conduit ( 36 ), and wherein the second force-fit or form-fit element ( 64 ) includes a second set of walls that extend at oblique angles relative to the longitudinal direction and define a second conduit opening ( 78 ) within the interior of the fastening part ( 44 ) for guiding the line conduit ( 36 ).

2. The wiper arm device according to claim 1 , characterized in that the line receptacle ( 52 ) is configured to guide the line unit ( 36 ) in a state disposed on the line receptacle ( 52 ) at least from an end region ( 72 ) of the fastening part ( 44 ) that comprises the articulation boss ( 48 ) to an end region ( 74 ) of the fastening part ( 44 ) that comprises the fastening boss ( 46 ), wherein the line unit ( 36 ) is enclosed by the fastening part ( 44 ) on at least two sides.

3. The wiper arm device according to claim 1 , characterized in that the line receptacle ( 52 ) at least largely encloses the line unit ( 36 ), wherein the fastening part ( 44 ) has at least one service opening ( 80 ) which is disposed on at least one side of the line receptacle ( 52 ).

4. The wiper arm device according to claim 3 , characterized in that the service opening ( 80 ) and the first and second conduit openings ( 76 , 78 ) are disposed on mutually dissimilar sides of the fastening part ( 44 ).

5. The wiper arm device according to claim 3 , characterized in that the service opening ( 80 ) and the first and second conduit openings ( 76 , 78 ) are disposed on mutually dissimilar sides of the fastening part ( 44 ), wherein the dissimilar sides face away from one another.

6. A wiper arm comprising
at least one articulation part ( 38 ),
at least one line unit ( 36 ), and
the wiper arm device according to claim 1 ,
wherein the articulation boss ( 48 ) defines an axis ( 58 ), wherein the fastening part ( 44 ) has at least one service opening ( 80 ) which is disposed on at least one side of the line receptacle ( 52 ); and
wherein the wiper arm device includes a cover cap ( 88 ) which at least in a closed state is configured to completely cover the service opening ( 80 ) of the line receptacle ( 52 ), wherein the cover cap ( 88 ) is pivotally coupled to the articulation boss ( 48 ) and is rotatable relative to the fastening part ( 44 ) about the axis ( 58 ).

7. A screen wiper system comprising
at least one wiper blade ( 22 ),
at least one wiper drive ( 16 ),
at least one wiper arm ( 20 ) comprising
at least one articulation part ( 38 ),
at least one line unit ( 36 ), and
the wiper arm device according to claim 1 , wherein the articulation boss ( 48 ) defines an axis ( 58 ), wherein the fastening part ( 44 ) has at least one service opening ( 80 ) which is disposed on at least one side of the line receptacle ( 52 );

at least one supply unit ( 18 ) which by way of the line unit ( 36 ) of the wiper arm ( 20 ) is configured to supply the wiper blade ( 22 ) with at least one of a fluid or an electric voltage; and
a cover cap ( 88 ) which at least in a closed state is configured to completely cover the service opening ( 80 ) of the line receptacle ( 52 ), wherein the cover cap ( 88 ) is pivotally coupled to the articulation boss ( 48 ) and is rotatable relative to the fastening part ( 44 ) about the axis ( 58 ).

8. The screen wiper system according to claim 7 , wherein the at least one supply unit ( 18 ) is at least one of a fluid container or an electronics unit.

9. The screen wiper system according to claim 7 , further comprising at least one bearing or guiding unit ( 92 ) which in a movement of the fastening part ( 44 ) about a central axis ( 56 ) of the fastening boss ( 46 ) is configured to bear the line unit ( 36 ) so as to be at least partially movable about the central axis ( 56 ).

10. The screen wiper system according to claim 9 , wherein the least one bearing or guiding unit ( 92 ) is configured to guide the line unit ( 36 ) at least partially along or about the drive shaft ( 24 ), proceeding from the fastening part ( 44 ).

11. The screen wiper system according to claim 7 , wherein the at least one supply unit ( 18 ), by way of the line unit ( 36 ) of the wiper arm ( 20 ), is configured to supply the wiper blade ( 22 ) with at least one of a fluid or an electric voltage.

12. The wiper arm device according to claim 1 , wherein the fastening part ( 44 ) has the at least one line receptacle ( 52 ) along an axis of main extent ( 50 ) of the fastening part ( 44 ).

Assignees

• Bosch Gmbh Robert

Inventors

• Goeller Alexander
• Biank Andreas
• Formisano Salvatore
• Koehn Swen

Classifications

• B60S1/50

  Arrangement of reservoir · CPC title

• B60S1/3481

  for mounting head · CPC title

• B60S1/3495

  Means for mounting the drive mechanism to the wiper shaft · CPC title

• B60S1/48

  Liquid supply therefor · CPC title

• A47L1/02 Primary

  Power-driven machines or devices · CPC title