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Structural unit consisting of a holding element and a windscreen-wiping device

Imported: 24 Feb '17 | Published: 06 Jan '04

Thomas Kotlarski

USPTO - Utility Patents

Abstract

The structural unit (

12) is comprised of a securing element (

11) and a wiper device (

10) and the wiper device

10 is detachably fastened to the securing element (

11). In this instance, the detachable connection is embodied as a detent connection. A detent element (

14) is embodied on the securing element (

11) and elastically engages in detent fashion in a detent seat (

13) embodied on a wiper bearing (

15) of the wiper device (

10).

Description

DRAWINGS

An exemplary embodiment of the invention will be explained in detail below in conjunction with the accompanying drawings.

FIG. 1 shows a schematic, perspective view of a partially depicted wiper device;

FIG. 2 shows a schematic, perspective view of a structural unit according to the invention, in an enlarged scale, and

FIG. 3 shows a schematic, perspective representation of an alternative embodiment of a securing element of the structural unit according to the invention.

Claims

1. A structural unit comprised of a securing element and a wiper device, in which the wiper device is detachably fastened to the securing element, wherein the detachable connection is embodied as a detent connection, wherein the detent connection (

14) is embodied on the securing element (

11) and elastically engages in a detent fashion in a detent seat (

13) on a wiper bearing (

15) of the wiper device (

10), wherein the detent seat (

13) is a circumferential groove (

16), wherein said circumferential groove (

16) describes a circle that is closed in a longitudinal direction, said detent connection (

14) having at least one elastically mobile spring element (

17), wherein said at least one spring element (

17) has at least one detent edge (

19) that is geometrically fitted to the circumferential groove (

16), wherein the securing element (

11) is a securing plate and the at least one spring element (

17) is comprised of two elastically mobile opposing sheet metal parts (

18) of the securing plate, wherein said at least one detent edge of said sheet metal parts (

18) are substantially oriented toward each other in a detent position, wherein in said detent position of the two elastically mobile opposing sheet metal parts (

18), respective end surfaces of the at least one detent edge (

19) contact a bottom surface of the circumferential groove (

16) and completely encompass the circumferential groove (

16), and wherein at least one parameter selected from the group consisting of a depth of said circumferential groove (

16), a wall thickness of said sheet metal parts, a length of said sheet metal parts, and a form of said sheet metal parts is selected to adjust an outward pressing force that must be exerted to release the detent connection (

14) and thereby the wiper device with possible plastic deformation of an element selected from the group consisting of said sheet metal parts, said circumferential groove and both said metal parts and said circumferential groove, such that a safety requirement is fulfilled that said wiper device be sufficiently flexible and/or released in the event of a collision when colliding with a human body.

2. The structural unit according to claim 1, characterized in that in their detent position, the sheet metal parts (

18) protrude from a plane (

20) of the securing plate.

3. The structural unit according to claim 1, characterized in that the wiper device (

10) is mounted to the securing element (

11) of the vehicle by means of a respective detent connection at three fastening points that are spaced apart from one another.

4. The structural unit according to claim 1, characterized in that the sheet metal parts (

18) can be pivoted elastically out of the detent position, around a pivot axis of each said sheet metal parts, in a direction away from a plane (

20) of the securing element and with a corresponding pivoting toward the plane (

20), are subjected to a plastic deformation due to a compressive force produced among the sheet metal parts (

18) and/or between each respective sheet metal part (

18) and the circumferential groove (

16) of the wiper bearing (

15).

5. The structural unit according to claim 1, characterized in that the structural unit (

12) for attaching the wiper device (

10) to the securing element (

11) has an additional fastening device after the production of the detent connection.

6. A structural unit comprised of a securing element and a wiper device, in which the wiper device is detachably fastened to the securing element, wherein the detachable connection is embodied as a detent connection, wherein the detent connection (

14) is embodied on the securing element (

11) and elastically engages in a detent fashion in a detent seat (

13) on a wiper bearing (

15) of the wiper device (

10), wherein the detent seat (

13) is a circumferential groove (

16) on a cylindrical pin (

25), wherein said circumferential groove (

16) describes a circle that is closed in a longitudinal direction, said detent connection (

14) having at least one elastically mobile spring element (

17), wherein said at least one spring element (

17) has at least one detent edge (

19) that is geometrically fitted to the circumferential groove (

16), wherein the securing element (

11) is a securing plate and the at least one spring element (

17) is comprised of two elastically mobile opposing sheet metal parts (

18) of the securing plate, wherein said at least one detent edge of said sheet metal parts (

18) are substantially oriented toward each other in a detent position, and wherein in said detent position of the two elastically mobile opposing sheet metal parts (

18), respective end surfaces of the at least one detent edge (

19) contact a bottom surface of the circumferential groove (

16), the end surfaces of the detent edges (

19) of the sheet metal parts (

18) are circumferential surfaces corresponding to the circumferential groove (

16) of the detent seat (

13) to extend along at least a part of the circumferential grooves (

16) in a continuous contact therewith, and wherein at least one parameter selected from the group consisting of a depth of said circumferential groove (

16), a wall thickness of said sheet metal parts, a length of said sheet metal parts, and a form of said sheet metal parts is selected to adjust an outward pressing force that must be exerted to release the detent connection (

14) and thereby the wiper device with possible plastic deformation of an element selected from the group consisting of said sheet metal parts, said circumferential groove and both said metal parts and said circumferential groove, such that a safety requirement is fulfilled that said wiper device be sufficiently flexible and/or released in the event of a collision when colliding with a human body, wherein the detent edges (

19) are circular and together form a through opening (

24) with a diameter which is smaller than an outer diameter of said cylindrical pin (

25) in a rest position, but in the detent position the diameter of the through opening (

24) reduces for providing automatic engagement of the detent edges (

19) into the circumferential groove (

16) due to elastic restoring forces.

7. A structural unit comprised of a securing element and a wiper device, in which the wiper device is detachably fastened to the securing element, wherein the detachable connection is embodied as a detent connection, wherein the detent connection (

14) is embodied on the securing element (

11) and elastically engages in a detent fashion in a detent seat (

13) on a wiper bearing (

15) of the wiper device (

10), wherein the detent seat (

13) is a circumferential groove (

16), wherein said circumferential groove (

16) describes a circle that is closed in a longitudinal direction, said detent connection (

14) having at least one elastically mobile spring element (

17), wherein said at least one spring element (

17) has at least one detent edge (

19) that is geometrically fitted to the circumferential groove (

16), wherein the securing element (

11) is a securing plate and the at least one spring element (

17) is comprised of two elastically mobile opposing sheet metal parts (

18) of the securing plate, wherein said at least one detent edge of said sheet metal parts (

18) are substantially oriented toward each other in a detent position, and wherein in said detent position of the two elastically mobile opposing sheet metal parts (

18), respective end surfaces of the at least one detent edge (

19) contact a bottom surface of the circumferential groove (

16), and the end surfaces of the detent edges (

19) of the sheet metal parts (

18) are circumferential surfaces corresponding to the circumferential groove (

16) of the detent seat (

13) to extend along at least a part of the circumferential grooves (

16) in a continuous contact therewith and completely encompass the circumferential groove, and wherein at least one parameter selected from the group consisting of a depth of said circumferential groove (

16), a wall thickness of said sheet metal parts, a length of said sheet metal parts, and a form of said sheet metal parts is selected to adjust an outward pressing force that must be exerted to release the detent connection (

14) and thereby the wiper device with possible plastic deformation of an element selected from the group consisting of said sheet metal parts, said circumferential groove and both said metal parts and said circumferential groove, such that a safety requirement is fulfilled that said wiper device be sufficienty flexible and/or released in the event of a collision when colliding with a human body.