Wiper device

• US 7,748,076 B2
• Filed: 01/27/2004
• Issued: 07/06/2010
• Est. Priority Date: 02/28/2003
• Status: Expired due to Fees

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Weiler, Michael, Zimmer, Joachim
• Primary Examiner(s): Graham; Gary K
• Application Number:
  US10/547,203
• Publication Number:
  US 20060143849A1
• Time in Patent Office: 2,352 Days
• Field of Search: 152/502.01, 152/503.51, 152/503.52, 152/504.8, 152/504.4, 152/504.3, 152/503.61
• US Class Current: 15/250.201
• CPC Class Codes: B60S 1/0411 the windscreens, windows or optical devices being movable with respect to fixed wipers
• CPC Class Codes: B60S 1/32 characterised by constructional features of wiper blade arms or blades
• CPC Class Codes: B60S 1/3429 Arm pieces
• CPC Class Codes: B60S 1/344 Flat-type mounting heads
• CPC Class Codes: B60S 1/3475 with blade or leaf springs

Abstract

The invention starts with a wiper device, in particular for a motor vehicle, which includes a wiper arm (10a-10j), which features a wiper rod (12a-12j) and a fastening part (14a-14j) connected in a non-articulated manner with the wiper rod (12a-12j).

It is proposed that the wiper device have at least one spoiler element (16a-16j) to generate a flow-induced bearing force.

Claims

1. Wiper device comprising:

a wiper arm (10a-10j) with at least one elastic section, which features a wiper rod (12a-12j) and a fastening part (14a-14j) connected especially in a non-articulated manner with said wiper rod (12a-12j);

and at least one spoiler element (16a-16j) to generate a flow-induced bearing force;

wherein said at least one spoiler element (16a-16j) substantially abuts over its entire length on said wiper rod (12a-12j) in at least a stressed state of said wiper rod (12a-12j) when said spoiler element (16a-16j) is mounted on said wiper rod (12a-12j), wherein said fastening part (14a-14j) is provided to accommodate a drive shaft, and wherein said fastening part (14a-14j) is connected with said wiper rod (12a-12j) via said at least one elastic section of said wiper arm (10a-10j);

wherein the spoiler element (16a-16d, 16i) features a changing cross-sectional shape in the longitudinal direction;

wherein said spoiler element (16a) is designed to be a single piece with said wiper rod (12a), and wherein on one end of said wiper rod (12a) facing away from said fastening part (14a) said wiper rod (12a) has a U-shaped cross-section which changes into a S-shaped cross-section along said longitudinal direction.

2. Wiper device according to claim 1, characterized in that the spoiler element (16a-16i) is designed at least partially as a single piece with the wiper arm (10a-10i).

3. Wiper device according to claim 1, wherein said S-shaped cross-section has a forward wing element pointing diagonally downward against a flow direction (20a) and has a rear wing element pointing diagonally upwards in said flow direction (20a).

4. Wiper device according to claim 3, wherein said wing elements have a length diminishing to zero in said longitudinal direction when starting from said end of the wiper rod (12a) facing away from said fastening part (14a).

5. Wiper device according to claim 1, wherein said wiper rod (12a-12j) is held by means of an overlapping of said fastening part (14a-14j) via a clamped connection in said fastening part (14a-14j).

6. Wiper device comprising:

a wiper arm (10a-10j) with at least one elastic section, which features a wiper rod (12a-12j) and a fastening part (14a-14j) connected especially in a non-articulated manner with said wiper rod (12a-12j);

and at least one spoiler element (16a-16j) to generate a flow-induced bearing force;

wherein said at least one spoiler element (16a-16j) extends along substantially an entire length on said wiper rod (12a-12j) in at least a stressed state of said wiper rod (12a-12j) when said spoiler element (16a-16j) is mounted on said wiper rod (12a-12j), wherein said fastening part (14a-14j) is provided to accommodate a drive shaft, and wherein said fastening part (14a-14j) is connected with said wiper rod (12a-12j) via said at least one elastic section of said wiper arm (10a-10j);

wherein said spoiler element (16b) is designed to be a single piece with said wiper rod (12b),

wherein said wiper rod (12b) has an substantially linear profile ascending in a flow direction (20b) that is inclined by approximately 40°

to said flow direction (20b) at its end facing away from said fastening part (14b), and

wherein said even profile forms said spoiler element (16b) via a diagonal inclination, and wherein said diagonal inclination diminishes from said end facing away from said fastening part (14b) in said longitudinal direction toward said fastening part (14b) from 40°

to 0°

.

7. Wiper device according to claim 6, characterized in that the spoiler element (16a-16i) is designed at least partially as a single piece with the wiper arm (10a-10i).

8. Wiper device according to claim 6, characterized in that the spoiler element (16a-16d, 16i) features a changing cross-sectional shape in the longitudinal direction.

9. Wiper device according to claim 6, wherein said wiper rod (12a-12j) is held by means of an overlapping of said fastening part (14a-14j) via a clamped connection in said fastening part (14a-14j).

10. Wiper device comprising:

a wiper arm (10a-10j) with at least one elastic section, which features a wiper rod (12a-12j) and a fastening part (14a-14j) connected especially in a non-articulated manner with said wiper rod (12a-12j);

and at least one spoiler element (16a-16j) to generate a flow-induced bearing force;

wherein said at least one spoiler element (16a-16j) substantially abuts over its entire length on said wiper rod (12a-12j) in at least a stressed state of said wiper rod (12a-12j) when said spoiler element (16a-16j) is mounted on said wiper rod (12a-12j), wherein said fastening part (14a-14j) is provided to accommodate a drive shaft, wherein said fastening part (14a-14j) is connected with said wiper rod (12a-12j) via said at least one elastic section of said wiper arm (10a-10j),

wherein said spoiler element (16c) is designed to be a single piece with said wiper rod (12c), and wherein said wiper rod (12c) has a U-profile with a base part that ascends diagonally in a flow direction (20c) to form said spoiler element (16c).

11. Wiper device according to claim 10, characterized in that the spoiler element (16a-16i) is designed at least partially as a single piece with the wiper arm (10a-10i).

12. Wiper device according to claim 10, characterized in that the spoiler element (16a-16d, 16i) features a changing cross-sectional shape in the longitudinal direction.

13. Wiper device according to claim 10, wherein said wiper rod (12a-12j) is held by means of an overlapping of said fastening part (14a-14j) via a clamped connection in said fastening part (14a-14j).

14. Wiper device comprising:

a wiper arm with at least one elastic section, which features a wiper rod and a fastening part connected especially in a non-articulated manner with said wiper rod; and

at least one spoiler element to generate a flow-induced bearing force;

wherein said fastening part is provided to accommodate a drive shaft, wherein said fastening part is connected with said wiper rod via said at least one elastic section of said wiper arm, wherein said spoiler element is designed to be slipped over said wiper rod, wherein said spoiler element is secured to the wiper rod via a locking connection, wherein said locking connection consists of hook-like elements which engage into corresponding recesses when said spoiler element is mounted on said wiper rod.

15. Wiper device according to claim 14, characterized in that the spoiler element (16e-16j) is formed by at least one component separate from a wiper rod component (24e-24i) of the wiper rod (12e-12j).

16. Wiper device according to claim 15, characterized in that at least one wiper rod component (24e-24i) of the wiper rod (12e-12j) is arranged at least partially in a receptacle area of the spoiler element (16e-16j).

17. Wiper device according to claim 16, characterized in that the spoiler element (16e-16i) is fastened via at least one locking connection (18e-18i).

18. Wiper device according to claim 15, characterized in that the spoiler element (16e-16i) is fastened via at least one locking connection (18e-18i).

19. Wiper device according to claim 15, characterized in that the spoiler element (16e-16i) is recessed in at least one bending area of at least one wiper rod component (24e-24i) of the wiper rod (12e-12i) in order to make a stroke movement possible.

20. Wiper device according to claim 19, characterized in that the spoiler element (16i) is recessed on an underside of the wiper rod component (24i) of the wiper rod (12i) in the bending area and is designed to be at least partially overlapping on an upper side of the bending area.

21. Wiper device according to claim 14, characterized in that the spoiler element (16j) is designed to be flexible in at least one area.

22. Wiper device according to claim 14, characterized in that the spoiler element (16a-16i) is designed to be at least largely deflection resistant in at least one area.

23. Wiper device according to claim 22, characterized in that the spoiler element (16e-16i) is recessed in at least one bending area of at least one wiper rod component (24e-24i) of the wiper rod (12e-12i) in order to make a stroke movement possible.

24. Wiper device according to claim 23 characterized in that the spoiler element (16i) is recessed on an underside of the wiper rod component (24i) of the wiper rod (12i) in the bending area and is designed to be at least partially overlapping on an upper side of the bending area.

25. Wiper device according to claim 14, wherein said spoiler element (16e-16j) has a receptacle area to accommodate said wiper rod (12e-12j).