WIPER ARM DEVICE

Abstract

A wiper arm device with at least one wiper arm (12), with at least one hose unit (14) which is arranged at least partially on the wiper arm (12) and comprises at least one fluid feed hose (16) and at least one wiper arm (18). The wiper arm device has at least one connecting unit (20) which fluidically connects the at least one fluid feed hose (16) and the at least one wiper arm hose (18) and which connects the at least one fluid feed hose (16) and the at least one wiper arm hose (18) to the at least one wiper arm (12), in particular is fixed thereon.

Claims

1. A wiper arm device comprising at least one wiper arm (12), at least one hose unit (14) which is arranged at least partially on the wiper arm (12) and comprises at least one fluid feed hose (16) and at least one wiper arm hose (18), and at least one connecting unit (20) which fluidically connects the at least one fluid feed hose (16) and the at least one wiper arm hose (18) and which connects the at least one fluid feed hose (16) and the at least one wiper arm hose (18) to the at least one wiper arm (12).

2. The wiper arm device according to claim 1, characterized in that the at least one connecting unit (20) is arranged on the at least one wiper arm (12) in a region (66, 68) close to a movement axis (46, 48) of the at least one wiper arm (12).

3. The wiper arm device according to claim 1, characterized in that the at least one connecting unit (20) has at least two connecting pieces (24, 24) which delimit at least one fluid duct (26) of the at least one connecting unit (20), the fluid duct being configured for connection to the at least one fluid feed hose (16) and the at least one wiper arm hose (18).

4. The wiper arm device according to claim 1, characterized in that the at least one connecting unit (20) forms a snap-fit connection to the at least one wiper arm (12) in at least one operating state.

5. The wiper arm device according to claim 1, characterized in that the at least one connecting unit (20) has at least two fixing elements (28, 28) on which at least one fixing projection (30, 30) is arranged in each case and which, in at least one operating state, form a snap-fit connection to the at least one wiper arm (12).

6. The wiper arm device according to claim 1, characterized in that the at least one connecting unit (20) has at least two fixing elements (28, 28) which are arranged on different sides of at least one connection nozzle (24, 24) of the connecting unit (20).

7. The wiper arm device according to claim 1, characterized in that the at least one connecting unit (20) delimits at least one fluid duct (26) which has a minimum flow cross-section which is at least as great as a smallest flow cross-section of the hose unit (14).

8. The wiper arm device according to claim 1, wherein the at least one connecting unit (20) is fixed on the at least one wiper arm (12).

9. The wiper arm device according to claim 8, characterized in that the at least one connecting unit (20) is fastened on the at least one wiper arm (12) in a region (66, 68) close to a movement axis (46, 48) of the at least one wiper arm (12).

10. A wiper system with at least one wiper blade (22) and with at least one wiper arm device (10) according to claim 1.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Further advantages result from the following description of the drawings. An exemplary embodiment of the invention is shown in the drawings. The drawings, the description, and the claims contain numerous features in combination. A person skilled in the art will expediently both consider the features individually and combine them to make appropriate further combinations.

[0018] In the drawings:

[0019] FIG. 1 shows a wiper system according to the invention in a schematic view,

[0020] FIG. 2 shows a connecting unit of a wiper arm device according to the invention in a schematic view,

[0021] FIGS. 3a and 3b show a wiper arm and a connecting unit of a wiper arm device according to the invention in a schematic view, and

[0022] FIG. 4 shows a wiper arm and a connecting unit of a wiper arm device according to the invention in a schematic view.

DETAILED DESCRIPTION

[0023] FIG. 1 shows a wiper system 40. The wiper system 40 comprises at least one wiper arm device 10. The wiper arm device 10 comprises at least one wiper arm 12. The wiper arm device 10 comprises at least one hose unit 14 arranged at least partially on the wiper arm 12. The wiper system 40 comprises at least one wiper blade 22. The wiper blade 22 is connected, in particular rigidly, to a wiper arm 12 of the wiper arm device 10. A hose unit 14 is arranged on the wiper arm 12, in particular a wiper side 44 of the wiper arm 12 (FIG. 4). The hose unit 14 comprises at least one fluid feed hose 16. The hose unit 14 comprises at least one wiper arm hose 18.

[0024] FIG. 2 shows a connecting unit 20. The at least one connecting unit 20 has at least two connecting pieces 24, 24. The at least one connecting unit 20 has at least two fixing elements 28, 28. At least one fixing projection 30, 30 is arranged on each of the fixing elements 28, 28. The at least two connecting pieces 24, 24 are arranged opposite each other. The at least two connecting pieces 24, 24 are situated opposite each other along a fluid connection axis 38. The fluid connection axis 38 is in particular oriented parallel to a shortest distance between the connecting pieces 24, 24. The at least one connecting unit 20 has at least two fixing elements 28, 28 which are arranged on different sides of at least one connection nozzle 24, 24 of the connecting unit 20. The at least two fixing projections 30, 30 are arranged opposite each other. The fixing projections 30, 30 have fixing insertion chamfers. The at least two fixing elements 28, 28 are situated opposite each other along an arm connection axis 42. The arm connection axis 42 is oriented in particular parallel to a shortest distance between the fixing elements 28, 28, in particular perpendicular to the fluid connection axis 38. The connecting unit 20 is designed in a mirror-symmetrical fashion. The connecting pieces 24, 24 are in particular arranged on the connecting unit 20 in a mirror-symmetrical fashion, in particular with respect to a mirror plane 32 which is oriented parallel to a shortest distance between the fixing elements 28, 28. The fixing elements 28, 28 are in particular arranged on the connecting unit 20 in a mirror-symmetrical fashion, in particular with respect to a mirror plane 34 which is oriented parallel to a shortest distance between the connecting pieces 24, 24. The connecting unit 20 has a central element 36 to which the fixing elements 28, 28 and the at least two connecting pieces 24, 24 are connected, in particular integrally. The central element 36 at least partially encloses the at least two connecting pieces 24, 24 to form a connection to the at least two connecting pieces 24, 24. The at least two fixing elements 28, 28 are designed so that they at least essentially have a curved shape.

[0025] The at least two connecting pieces 24, 24 delimit at least one fluid duct 26 of the at least one connecting unit 20. The at least one connecting unit 20 delimits at least one fluid duct 26 which has a minimum flow cross-section which is at least as great as a smallest flow cross-section of the hose unit 14. The fluid duct 26 is provided in order to be connected to the at least one fluid feed hose 16 and to the at least one wiper arm hose 18.

[0026] FIG. 3a shows that the at least one wiper arm 12 comprises at least one holding unit 56. The holding unit 56 is provided in particular for holding and/or connection to the at least one connecting unit 20. The holding unit 56 is arranged on the wiper side 44 of the wiper arm 12. The at least one holding unit 56 has two recesses 58, 58. The recesses 58, 58 each have a round part-recess 60 with insertion chamfers 62, 62, 62, 62 leading to the round part-recess 60. The recesses 58, 58 are provided in order to hold the at least one connecting unit 20 in precisely one position (FIG. 3b). The at least one wiper arm 12 has two rib elements 64, 64. The rib elements 64, 64 are arranged laterally offset on the wiper arm 12, in particular in the direction of the main axis of extent of the wiper arm 12. The at least two rib elements 64, 64 are arranged on different sides, in particular opposite sides of the wiper arm 12. The at least two rib elements 64, 64 are arranged on edges of the two recesses 58, 58. One rib element 64, 64 is in each case arranged on each recess 58, 58. The rib elements 64, 64 are arranged on different sides of the recesses 58, 58 in the direction of the main axis of extent of the wiper arm 12.

[0027] FIG. 4 shows that the wiper arm device 10 comprises at least one connecting unit 20 which fluidically connects the fluid feed hose 16 and the at least one wiper arm hose 18. The connecting unit 20 connects the at least one fluid feed hose 16 and the at least one wiper arm hose 18 to the at least one wiper arm 12. The connecting unit 20 fixes the at least one fluid feed hose 16 and the at least one wiper arm hose 18 to the at least one wiper arm 12.

[0028] The wiper arm 12 has at least two movement axes 46, 48. The at least two movement axes 46, 48 are arranged perpendicularly to each other. A first movement axis 46 is arranged at one end of a maximum extent of the at least one wiper arm 12 along its main axis of extent. A close region 66, in particular of the wiper arm 12, is arranged about the first movement axis 46. The at least one wiper arm 12 is mounted, so that it can pivot at the at least one first movement axis 46, on a further object, preferably a vehicle. A further movement axis 48 of the at least one wiper arm 12 is arranged in a region, preferably a central region 50, of the at least one wiper arm 12, which region is spaced apart from one end of a maximum extent of the at least one wiper arm 12 along the main axis of extent by at least 5 cm. A close region 68, in particular of the wiper arm 12, is arranged about the further movement axis 48. A wiper arm part 52 of the at least one wiper arm 12 is mounted so that it can pivot at the at least one further movement axis 48 with respect to a wiper arm part 54 of the at least one wiper arm 12. The at least one connecting unit 20 is arranged on the at least one wiper arm 12, in a region 66, 68 close to a movement axis 46, 48 of the at least one wiper arm 12. The at least one connecting unit 20 is fastened to the at least one wiper arm 12 in a region 66, 68 close to a movement axis 46, 48 of the at least one wiper arm 12. The at least one connecting unit 20 is arranged and/or fastened on the at least one wiper arm 12 in a close region 66, 68 of two movement axes 46, 48 of the at least one wiper arm 12.

[0029] The at least one connecting unit 20 forms a snap-fit connection to the at least one wiper arm 12 in at least one operating state. The at least two fixing elements 30, 30 form a snap-fit connection to the at least one wiper arm 12 in at least one operating state. The at least one hose unit 14 is connected to the at least one connecting unit 20 along the fluid connection axis 38 of the at least one connecting unit 20. The at least one wiper arm 12 is connected to the at least one connecting unit 20 along the arm connection axis 42 of the at least one connecting unit 20.