DE102012001018A1 - Windshield wiper arm of wiper for motor car, has locking element that is displaced between release position in which swiveling of swivel bearing is enabled, and locking position in which swiveling of swivel bearing is cancelled - Google Patents

Abstract

The windshield wiper arm (10) has first partial arm (20) that is pivotally mounted on second partial arm (30) using a swivel bearing. A locking element (40) is provided between the partial arms and is displaced between release position and locking position. The swiveling of the swivel bearing is enabled during release position of the locking element, and swiveling of the swivel bearing is cancelled during locking position of the locking element. The locking element is fixed into a recess (50) formed in first or second partial arm.

Description

The invention relates to a Scheibenwischerarmarretierung and a vehicle comprising a windshield wiper with such a Scheibenwischerarmarretierung.

Motor vehicles have windshield wipers on the front windows and, depending on the model, also on the rear windows. These consist of a wiper arm, which is connected at one end with a wiper ashes and ultimately with a motor, and at the other end a wiper blade is pivotally mounted. In order to allow folding of the windshield wiper of the disc, for example, to allow free access to the disc for cleaning purposes, the windshield wiper arm usually has a pivot bearing. The disadvantage of this pivot bearing in a vehicle cleaning in an automatic car wash. The rotary brushes used there may cause a collapse of the windscreen wiper arm, which is then damaged or torn off by the rotary brushes, or in turn damage the rotary brushes themselves.

This problem has been recognized in the prior art. The DE 196 33 303 A1 suggests a hood, which is placed over a windshield wiper before a washing operation and attached with suction cups on the disc. The present invention has for its object to provide alternative solutions to the problem.

The object is achieved by a windscreen wiper arm with the features of the main claim and a motor vehicle according to the independent claim. Examples of preferred embodiments are the subject of the dependent claims.

The invention accordingly relates to a windscreen wiper arm having a first and a second arm. The first partial arm can be assigned to a wiper axis, in particular can be connected to a wiper axis, and thus allows attachment to the vehicle as well as power transmission from a motor for moving the windscreen wiper arm. The second arm is pivotally mounted on the first arm by means of a pivot bearing and allows the folding of the windshield wiper. According to one embodiment, there is a spring return, so that the windshield wiper after folding returns automatically returns to its normal position in which it rests on the disc, unless he is brought to a stable end position in which he remains permanently folded from the disc ,

One of the partial arms is assigned a locking element mechanically fixed, which is displaceable between a release position and a locking position. In the release position, the blocking element allows the pivoting of the pivot bearing and lifts it in the locked position. Thus, in a locking element in the release position, a conventional use of the windscreen wiper is secured, which can then be folded down, for example, to remove impurities. If, for example, folding into a cleaning system is to be prevented in order to prevent damage to the windscreen wipers, the blocking element is brought into the blocking position and advantageously locks the windscreen wiper arm.

The second partial arm is substantially elongate or rod-shaped. The first part of arm is also elongated or rod-shaped according to a development. According to an alternative development, the second partial arm is reduced in size relative to a rod and is essentially limited to a cap which is connected to the wiper axis. Between a substantially rod-shaped and a substantially cap-shaped form of the second partial rod, all possible transitional forms can be present.

According to one embodiment, the blocking element is fixedly assigned to one of the partial arms, while a locking recess is assigned mechanically fixed in accordance with another partial arm. If the blocking element is in the blocking position, it engages in the blocking recess. As a result, the pivoting of the pivot bearing is canceled, whereby the windshield wiper is no longer completely folded from the disc. In the release position, the locking recess is released because the locking element does not engage.

According to one embodiment, the locking recess is located directly on the pivot bearing, so that its pivotability is prevented directly upon intervention of the locking element.

An alternative embodiment provides that the locking recess is assigned directly to one of the arms mechanically fixed. By engaging the locking element in the locking recess, the arm parts are mechanically locked together, whereby the pivoting of the pivot bearing is indirectly prevented. The locking recess may be mechanically fixedly assigned to the first or the second partial arm, according to which the blocking element is assigned to the second or the first partial arm in a mechanically fixed manner.

According to a further embodiment, the blocking element is half-sleeve-shaped and slidably mounted on one of the arms. From this part of arm, it is displaced to the other part of the arm, wherein the blocking element in the release position the other partial arm not covered. In the blocking position, however, the blocking element at least partially covers one part arm and at the same time at least partially also the other part arm, whereby the pivoting of the pivot bearing is canceled.

The half-sleeve-shaped shape is particularly adapted to the cross-sectional shape of the arms and is for example U-shaped or arcuate.

A further development of the windshield wiper arm according to the invention provides that the blocking element is freely displaceable from the release position into the blocking position and back again. According to an alternative development, the blocking element in the release position, in the locked position or preferably in both latched. Accordingly, the blocking element is to be secured in the respective position and brought back into the other position only under the action of force or actuation of an unlocking mechanism, whereby advantageously an unintentional change between the two positions is made difficult or prevented.

The displacement of the locking element between the release position and the locking position is carried out manually according to a development, which advantageously provides a simple and inexpensive to implement solution. Alternatively, an actuator is provided which causes the displacement. Accordingly, the actuator is activated by means of an operating command, which moves the blocking element in the desired position. As a result, the vehicle occupants, in particular the driver before entering a car wash a comfortable locking of the wiper arm allows without having to leave the vehicle.

By wiper arm according to the invention is advantageously a lifting of the pivoting, ie a lock allows, which prevents unintentional folding of the windshield wiper arm of the disc. Since the blocking element responsible for the locking is assigned to one of the sub-arms mechanically fixed, a lock is made possible in a simple manner, for the beyond no separate part must be carried in the vehicle.

Further advantages, features and details will become apparent from the following examples, which may take reference to the drawings and in which an embodiment is described in detail. Described and / or illustrated features form the subject of the invention, or independently of the claims, either alone or in any meaningful combination, and in particular may additionally be the subject of one or more separate applications. The same, similar and / or functionally identical parts are provided with the same reference numerals. Show it:

1 a schematic side view of a section of a windshield wiper arm according to the invention

2 a schematic horizontal longitudinal section through a section of a windshield wiper arm according to the invention

3 a schematic three-dimensional view of a windshield wiper arm according to the invention in the release position

4 a schematic three-dimensional view of a windshield wiper arm according to the invention in the locked position

In 1 is a schematic plan view of a section of a windshield wiper arm according to the invention 10 shown. In the upper part figure is on the right part of a first arm 20 that is a blocking element 40 with a button accessible to an operator from the outside 42 and partially within the first sub-arm 20 extending locking bolt 44 having. Left is a part of an associated second partial arm 30 shown. This has a located below the plane and therefore drawn by a dashed line recess 50 on. A pivot bearing 60 , about which the first arm 20 opposite the second part arm 30 is pivotally mounted, is also located behind the plane and is symbolically indicated by a dotted circle. The pivoting is symbolized by a double arrow. In the lower part of the figure is the blocking element 40 in the direction of the second partial arm 30 shifts and therefore engages in the recess 50 one, creating the first part arm 20 and the second arm 30 mechanically locked together and the pivoting about the pivot bearing 50 is blocked (symbolized by a double crossed double arrow). By in the direction of the second arm 30 shifted blocking element 40 is from the outside for an operator only the button 42 visible, noticeable. The semicolon line in the upper part of the figure indicates the cutting plane that is in 2 is taken as a basis.

In 2 is a schematic section through a section of a windshield wiper arm according to the invention 10 in the in 1 designated section plane shown. In the upper part figure on the left is a part of a second arm part 30 with a recess 50 shown. To the right of it is part of a first partial arm 20 shown, which is a blocking element 40 with a button 42 and a locking bolt 44 includes. Further adjoining, behind the plane lying parts of the first partial arm 20 and the second partial arm 30 are through Jagged fault lines symbolizes. The locking bolt 44 does not reach into the recess 50 one, which is why the first arm 20 and the second arm 30 can be pivoted against each other via a non-illustrated pivot bearing, wherein the pivoting would take place in the plane of the drawing or out of the plane of the drawing. In the lower part of the figure is the blocking element 40 in the direction of the second partial arm 30 shifted, which is why the locking bolt 44 into the recess 50 engages and the pivoting of the first part arm 20 opposite the second part arm 30 is canceled.

In 3 is a schematic perspective view of a more concrete embodiment of an inventive wiper arm 10 shown, the one shown in the upper right in the illustration first arm 20 and a second lower arm shown on the left below 30 includes. At the bottom left end of the second arm 30 this is suitably shaped for the attachment of a wiper blade, not shown. The first part arm 20 is essentially designed as a cap and only a small part rod-shaped. Under the first arm 20 this is assigned to a wiper axis, not shown. At the first part arm 20 is a button accessible to a user 42 of the blocking element 40 visible and continue to be a part of the subsequent locking bolt 44 shown, wherein the blocking element 40 is in the release position. Given the release position is the second arm 30 pivotable in the direction of the double arrow about a pivot axis.

In 4 is the blocking element 40 in the direction of the second partial arm 30 displaced, causing the viewer from behind the outer wall of the second arm 30 located and therefore dashed drawn locking latch 44 in the also behind the outer wall of the second arm part 30 located and therefore dotted drawn recess 50 engages and thereby the pivoting of the second part of the arm 30 opposite the first part arm 20 picks.

LIST OF REFERENCE NUMBERS

10

wiper arm

20

first partial arm

30

second arm

40

blocking element

42

button

44

safety catch

50

recess

60

pivot bearing

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 19633303 A1 [0003]

Claims (7)

Wiper arm ( 10 ) with a wiper axis assignable first partial arm ( 20 ) and one on the first arm ( 20 ) by means of a pivot bearing ( 60 ) pivotally mounted second arm ( 30 ), characterized by one of the partial arms ( 20 . 30 ) mechanically fixed and displaceable between a release position and a blocking position blocking element ( 40 ), which in the opening position, the pivoting of the pivot bearing ( 60 ) and in the locked position, the pivoting of the pivot bearing ( 60 ) picks up. Wiper arm ( 10 ) according to claim 1 with a blocking element ( 40 ), one of the arms ( 20 . 30 ) is assigned mechanically fixed and is displaceable between a release position and a blocking position, characterized by a the other of the sub-arms ( 30 . 20 ) mechanically assigned recess ( 50 ) into which the blocking element ( 40 ) in the locked position for locking the pivot bearing ( 40 ) engages and which is released in the release position. Wiper arm ( 10 ) according to claim 1, characterized in that the blocking element ( 40 ) is half-sleeve-shaped, sliding on one of the arms ( 20 . 30 ) and to the other arm ( 30 . 20 ) is displaceable, wherein the blocking element ( 40 ) in the release position the other arm ( 30 . 20 ) not covered and in the locked position the one arm ( 20 . 30 ) and at least partially the other arm ( 30 . 20 ) covered. Wiper arm ( 10 ) according to one of the preceding claims, characterized in that the blocking element ( 40 ) in the release position and in the locked position can each be latched. Wiper arm ( 10 ) according to one of the preceding claims, characterized in that the blocking element ( 40 ) can be brought manually from the locking position to the release position and from the release position to the locked position. Wiper arm ( 10 ) according to one of claims 1 to 4, characterized in that the blocking element ( 40 ) Can be brought by means of a controllable actuator from the locking position to the release position and from the release position to the locked position. Motor vehicle comprising a windscreen wiper arm ( 10 ) according to any one of the preceding claims.

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