DE20321490U1 - Wiper device with flat wiper blade and wiper arm - Google Patents

Abstract

wiper device (10), in particular for wiping vehicle windows, with a drivable Wiper arm (14), with a on the wiper arm (14) can be arranged flat wiper blade (16), the support means supporting a squeegee (18), the squeegee (18) (20), which preferably in the form of band-like elongated spring rails can be trained and connecting means for connection to the free end (12) of the wiper arm (14) comprises, characterized in that the connecting means a on the support means (20) fixedly arranged carrier element (22) and a relation to the Carrier element (22) comprise conditionally pivotable connecting element (24), wherein the connecting element (24) with the free end (12) of the wiper arm (14) detachable is connectable.

Description

The The invention relates to a wiper device, in particular for wiping of vehicle windows, with a drivable wiper arm, with a flat wiper blade which can be arranged on the wiper arm and which is a squeegee, supporting the wischgumi Supporting means, which preferably in the form of band-like elongated Spring rails can be formed and connecting means for connection to the free end of the wiper arm includes. The invention also relates to a wiper blade and a wiper arm such a wiper device.

at Such wiping ensure the suspension, in particular two in longitudinal grooves the wiper strip lying, wall-like elongated spring rails, an optimum distribution of wiper blade contact pressure starting from the wiper arm the disc to be wiped. These are the support means in unloaded Condition, so if the wiper blade is not applied to the disc, bent accordingly and have a defined curvature. Such flat wiper blades Consequently, have no support and claw bracket construction, as they known from the prior art in a variety of ways has become.

From the DE 198 56 299 A1 an initially mentioned wiper device has become known. The connecting means of the flat wiper blade comprise a fixedly arranged on the flat wiper blade connecting element having laterally projecting connecting pin. The connecting pins can be inserted into pin receptacles arranged at the free end of the wiper arm, so that the flat wiper blade can be pivoted relative to the wiper arm. To release the flat wiper blade from the wiper arm, the flat wiper blade is pivoted by 90 °. In this position, the pivot pins can be led out of the unilaterally open pin shots. Such a wiper device has the disadvantage that at the free end of the wiper arm, the pivotable mounting between the wiper arm and flat wiper blade forming pin receptacles are provided. This is associated with high manufacturing complexity and thus high costs. Another disadvantage is that the swivel bearing subject to wear is part of the wiper arm.

Of the The present invention is therefore based on the object, a initially mentioned, known wiper device to the effect that realized a secure storage of the flat wiper blade on the wiper arm is, with the storage as possible should build flat, should be subject to low wear, cost-effective too should be realized and protected from environmental influences. In addition, should a cheap one Aerodynamics result.

to solution the above object is proposed according to the invention, an entrance further develop said wiper device to the effect that the connecting means a support element fixedly arranged on the carrier element and a relation to the support element comprise partially pivotally arranged connecting element, wherein the connecting element releasably connectable to the free end of the wiper arm is. In the wiper device according to the invention Consequently, the pivot bearing is realized wiper blade side. The necessary rotatable storage between flat wiper blade and wiper arm is completely integrated in the flat wiper blade. The free end the wiper arm is rigidly connected to the connecting element, the pivotable movement takes place between the connecting element and the carrier element. As a result, the height is very high kept flat. Furthermore there must be no space between the ones moving relative to the wiper arm Components of the flat wiper blade and the wiper arm are provided. Furthermore, the rotatable mounting is now less complicated ausgestaltbar, since it is part of the replaceable wear part flat wiper blade.

A advantageous embodiment The invention is characterized in that the free end of Wischarms preferably a plurality of longitudinally extending tongues in the assembled state in on the connecting element intended tongue recordings intervene. By means of such tongues and associated Tongue recordings can be a form-fitting joining of the free end of the wiper arm done with the connecting element in a simple manner.

The Tongues are advantageously formed integrally with the free end and project at least partially into the disc facing Direction. As a result, the tongues are neither unmounted nor in the mounted state of the flat wiper blade disturbing.

The Connecting the wiper arm with the connecting element takes place here advantageously in the direction of the longitudinal axis of the wiper arm, wherein the tongues when connecting the tongue receptacles at least in sections form-fitting be recorded. The tongues can be designed so that they facilitate insertion into the Allow tongue recordings and thus also as a joining aid serve.

A further embodiment of the invention is characterized in that the end face of the free end of the wiper arm rests in the assembled state at least partially positively against a supporting edge of the connecting element. As a result, a defined position of the flat wiper blade relative to the free end of the wiper arm is achieved. Preferably, the support edge is formed such that it follows the contour of the free end of the wiper arm and thus a substantially flat and aerodynamic surface is achieved.

advantageously, has the free end of the wiper arm largely transverse to the longitudinal direction the wiper arm and preferably substantially perpendicular to the disc extending holding portions, which cooperate in the assembled state with arranged on the connecting element operating portions, the at Actuate a release enable the wiper blade of the wiper arm. In assembled condition Thus, the free end of the wiper arm becomes between in particular the supporting edge and the operating sections longitudinal held. A release in the direction perpendicular to the disc is due to the in the tongue recordings existing tongues not possible. The free end of the wiper arm is therefore rigid on the connecting element arranged.

The Holding sections can be advantageously designed as holding edges, which mounted in the Condition of the operating sections be locked in such a way that moving and loosening in the longitudinal direction of the connecting element with respect to the Wiper arm is prevented. To mount the flat wiper blade on The free end of the wiper arm consequently the tabs in the Laschenaufnahmen introduced and the flat wiper blade extends so far onto the free end of the wiper arm deferred, to one the free end of the wiper arm the supporting edge form-fitting is applied and on the other hand, the operating sections engage behind the retaining edges of the free end of the wiper arm.

there protrude the operating sections advantageously not over the outer contour the free end of the wiper arm. Preferably close the operating portions flush to the outer contour of the wiper arm or back behind them. This becomes an unwanted, accidental operation the operating sections locked out.

at a preferred embodiment The invention relates to the operating sections arranged at the free ends of spring tongues, each to the opposite Side of the connecting element arranged extending in the longitudinal direction are so that they are largely parallel to the disc and in succession facing direction against a biasing force can be actuated. This has the advantage that the operating sections save space, reliable and be provided in a simple manner. advantageously, In particular, no further components are required.

A particularly preferred embodiment The invention is characterized in that the free end of Wischarms includes a U-profile section whose open side in Direction of the disk to be wiped points. This has the advantage that the connecting means of the flat wiper blade of the U-profile completely coverable and protected are. Impurities can Therefore, not readily the pivotal assembly connecting element - carrier element adversely affect.

advantageously, surrounds and / or engages behind the U-profile section in the mounted state of the Connecting element for receiving transverse forces at least partially positively. Especially the section of the U-profile section, the between the supporting edge the connecting element and the operating portions of the connecting element is located, serves to receive acting on the flat wiper blade Lateral forces.

The Tongues are preferably on the transverse web of the U-profile section and the holding sections arranged the legs of the U-profile section. This allows a relatively easy to connect the free end of the wiper blade with the connecting section.

A Development of the invention is characterized in that the free end of the wiper arm and preferably the transverse web of the U-profile section has at least one recess into which the connecting element engages at least in sections. This can be an additional stability achieved the connection between the wiper arm and connecting element become.

advantageously, the connecting element has a section which is largely U-shaped in cross-section on, whose legs in the assembled state, the support element um- and / or engage behind, where arranged between the legs and the support member pivoting means are. Such a construction has a relatively low, vertical to the disc directed height on. Nevertheless, sufficient pivotability between the support element and the connecting element possible.

there it can be provided that the connecting element or the carrier element transverse to the longitudinal direction extending, lying in a line journal, the at least conditional pivotability at least in sections in on the support element or connecting element provided engage pin receptacles. The journals and the associated Spigots therefore realize the between the thighs the connecting element and the support member provided pivoting means.

According to the invention is still conceivable that the two legs of the connecting element and the support element transverse to the longitudinal direction running, lying in a line breakthroughs, in particular in the form of Holes, which receive a pivot pin for conditional pivotability.

Around to achieve a reduction of the individual parts of the wiper device, is in a further embodiment the invention provides that the carrier element directly to the Suspension means is arranged. In this case, the carrier element, for example, receiving sections for receiving the support means in the form of the spring rails. For fixing the carrier element on the spring rails, the support element be joined for example with the spring rails, for example by Welding, Gluing, clamping or the like

The The object mentioned above is also characterized by a flat wiper blade and / or a wiper arm of a device according to the invention.

Further advantageous embodiments and details of the invention are in the following description, in which the invention with reference to of the embodiment shown in the drawing and explained is.

It demonstrate:

1 a wiper device according to the invention in a perspective plan view;

2 the flat wiper blade of the wiper device according to 1 ;

3 the bottom view of a wiper device according to the invention without squeegee and without support means;

4 a longitudinal section through the wiper device according to 1 ; and

5 a cross section through the wiper device according to 1 ,

1 shows a wiper device 10 for wiping vehicle windows. Shown is the free end 12 a drivable wiper arm 14 and the cutout of a flat wiper blade 16 that with the free end 12 of the wiper arm 14 connected is. The flat wiper blade 16 consists of a squeegee 18 , the squeegee 18 supporting suspension elements 20 , one on the suspension elements 20 arranged Tägerelement 22 and one opposite to the carrier element 22 conditionally pivotable arranged connecting element 24 , The suspension means 20 are in the form of two elongated spring rails, which are in corresponding longitudinal grooves of the squeegee 20 lie, educated.

From the 1 and the 5 it becomes clear that the free end 12 of the wiper arm 14 U-shaped profile is formed and a crossbar 26 and two thighs 28 exhibit. In the in the 1 shown mounted state surrounds the free end 12 of the wiper arm 14 the connecting element 24 largely positive fit. This can affect the flat wiper blade 16 acting transverse forces on the wiper arm 14 be transmitted.

The free end 12 of the wiper arm 14 points to the crossbar 26 two longitudinally extending tongues 30 and 32 on, which is integral with the wiper arm 14 are formed and in the disc or the squeegee 18 protrude toward the direction. The tongues 30 and 32 are in particular in 3 and 4 clearly visible. In 3 in which the bottom view of the wiper arm with connecting element arranged thereon 24 and carrier element 22 is clearly visible, as the tongues 30 and 32 in on the connecting element 24 provided tongue recordings 34 and 36 intervention.

Out 1 and 4 it becomes clear that in the mounted state the front side 38 the free end 12 of the wiper arm 14 at a supporting edge 40 of the connecting element 24 is applied. To mount the flat wiper blade 16 with the wiper arm 14 thus become the two tongues 30 and 32 in the two tongue recordings 34 and 36 introduced and the connecting element 24 so far to the free end 12 of the wiper arm 14 deferred until the front side 38 at the supporting edge 40 comes to the concern.

In the mounted position behind two operating sections 42 of the connecting element 24 on wischarmseitigen holding sections in the form of retaining edges 44 , The retaining edges 44 run largely transversely to the longitudinal direction of the wiper arm 14 and largely perpendicular to the disc. The operating sections 42 are each at the free ends of two opposite, longitudinally extending spring tongues 46 arranged. To release the flat wiper blade 16 from the wiper arm 14 can the operating sections 42 in mutually facing direction against a biasing force resulting from the elasticity of the spring tongues 46 results, be actuated. Be the operating sections 42 in the direction of the central longitudinal axis of the flat wiper blade 16 pressed, so can the flat wiper blade 16 in the longitudinal direction of the wiper arm 14 lose weight.

The distance between the front side 38 and the retaining edges 44 is essentially the same as Distance between the supporting edge 40 and the supporting edge 40 facing, the retaining edge 44 behind latching areas of the operating sections 42 , This will ensure that the free end 12 of the wiper arm 14 with the connecting element 24 securely latched.

Advantageously, the actuating portions do not protrude beyond the outer contour of the wiper arm 14 out.

As in particular from 2 and 3 becomes clear, are the operating sections 42 formed in a sub-view or in longitudinal section wedge-shaped. This will cause the connecting element to slide open 24 to the free end 12 of the wiper arm 14 simplified.

Out 1 and 4 it becomes clear that the wiper arm 14 or the crosspiece 26 a recess 48 has, in the assembled state, a section 50 of the connecting element 24 intervenes. The parallel to the longitudinal direction sides of the section 50 lie flush with the insides of the recess 48 at. This will increase the stability of the connection between the free end 12 of the wiper arm 14 and the connecting element 24 improved.

Especially the 5 clearly shows that the connecting element 24 in cross-section U-shaped profile with a crosspiece 52 and two thighs 54 is trained. The two thighs 54 surround the carrier element 24 largely positive fit. You and the support element 22 have one along an axis 56 extending bore on, within which a journals 58 is arranged. As a result, a veschwenkbare storage between the connecting element 24 and the carrier element 22 reached. The carrier element 22 also has two opposing grooves 60 for receiving the opposite longitudinal sides of the support means 20 forming spring rails. For fastening the spring rails 20 in the reception 60 For example, various means may be used, such as mounting bolts, mounting bolts, adhesives, welding or the like. Out 5 it becomes clear that the squeegee 18 one of the wiping disc facing wiper strip 62 and one of the wiper strip 62 remote spoiler-like approach 64 having.

All in the description, the following claims and the drawing Features can both individually, as well as in any combination with each other invention essential be.

Claims (18)

Wiper device ( 10 ), in particular for wiping vehicle windows, with a drivable wiper arm ( 14 ), with one on the wiper arm ( 14 ) can be arranged flat wiper blade ( 16 ), which is a squeegee ( 18 ), the squeegee ( 18 ) supporting suspension means ( 20 ), which may be preferably in the form of band-like elongated spring rails, and connecting means for connection to the free end ( 12 ) of the wiper arm ( 14 ), characterized in that the connecting means a on the support means ( 20 ) fixedly arranged carrier element ( 22 ) and a relative to the carrier element ( 22 ) conditionally pivotally arranged connecting element ( 24 ), wherein the connecting element ( 24 ) with the free end ( 12 ) of the wiper arm ( 14 ) is releasably connectable. Wiper device ( 10 ) according to claim 1, characterized in that the free end ( 12 ) of the wiper arm ( 14 ) preferably a plurality of longitudinally extending tongues ( 30 . 32 ) in the assembled state in on the connecting element ( 24 ) provided tongue receptacles ( 34 . 36 ) intervene. Wiper device ( 10 ) according to claim 2, characterized in that the tongues ( 30 . 32 ) in one piece with the free end ( 12 ) of the wiper arm ( 14 ) are formed and at least partially project in the direction of the disc facing direction. Wiper device ( 10 ) according to claim 2 or 3, characterized in that the connection of the wiper arm ( 12 ) with the connecting element ( 24 ) in the direction of the longitudinal axis of the wiper arm ( 14 ), the tongues ( 30 . 32 ) from the tongue receptacles ( 34 . 36 ). Wiper device ( 10 ) according to one of the preceding claims, characterized in that the end face ( 38 ) of the free end ( 12 ) of the wiper arm ( 14 ) in the assembled state at least partially positively against a support edge ( 40 ) of the connecting element ( 24 ) is present. Wiper device according to one of the preceding claims, characterized in that the free end ( 12 ) of the wiper arm ( 14 ) substantially transversely to the longitudinal direction of the wiper arm ( 14 ) and preferably substantially perpendicular to the disk extending holding sections ( 44 ) which cooperate in the mounted state with on the connecting element ( 24 ) arranged actuating sections ( 42 ), which in operation, a release of the wiper blade ( 16 ) from the wiper arm. Wiper device ( 10 ) according to claim 6, characterized in that the holding sections ( 44 ) are formed as holding edges, in the mounted state of the operating sections ( 42 ) are locked in such a way that a movement of the connecting element ( 24 ) opposite the wiper arm ( 14 ) is prevented. Wiper device ( 10 ) according to claim 7, characterized in that the actuating sections ( 42 ) not over the outer contour of the free end of the wiper arm ( 14 ) protrude. Wiper device ( 10 ) according to claim 6, 7 or 8, characterized in that the actuating sections ( 42 ) at the free ends of spring tongues ( 46 ) are arranged, which in each case on the opposite sides of the connecting element ( 24 ) are arranged extending in the longitudinal direction, so that they are largely parallel to the disc and in facing toward each other against a biasing force actuated. Wiper device ( 10 ) according to one of the preceding claims, that the free end of the wiper arm ( 14 ) comprises a U-profile section, the open side facing in the direction of the disk to be wiped. Wiper device ( 10 ) according to claim 12, that the U-profile section in the mounted state, the connecting element ( 24 ) for receiving transverse forces at least partially positively and / or engages behind. Wiper device ( 10 ) according to claim 11 or 12, characterized in that the tongues ( 30 . 32 ) on the crosspiece ( 26 ) and the holding sections ( 44 ) on the thighs ( 28 ) of the U-profile section are arranged. Wiper device ( 10 ) according to one of the preceding claims, characterized in that the free end of the wiper arm ( 14 ) and preferably the crosspiece ( 26 ) of the U-profile section at least one recess ( 48 ) into which the connecting element ( 50 ) intervenes at least in sections. Wiper device ( 10 ) according to one of the preceding claims, characterized in that the connecting element ( 50 ) has a cross-sectionally substantially U-shaped portion whose legs ( 54 ) in the assembled state, the carrier element ( 22 ) and / or engage behind, whereby between the thighs ( 54 ) and the carrier element ( 22 ) Pivot means are arranged. Wiper device ( 10 ) according to one of the preceding claims, characterized in that the connecting element ( 24 ) or the carrier element ( 22 ) extending transversely to the longitudinal direction, in a line ( 56 ) axle journals ( 58 ), which at least partially pivotable for at least conditional pivoting in on the support element ( 22 ) or connecting element ( 24 ) engage provided pin receptacles. Wiper device ( 10 ) according to claim 14 and 15, characterized in that the two legs ( 54 ) of the connecting element ( 24 ) and the carrier element ( 22 ) extending transversely to the longitudinal direction, in a line ( 56 ) lying through openings, which has a pivot pin ( 58 ) take up. Wiper device ( 10 ) according to one of the preceding claims, characterized in that the carrier element ( 22 ) directly on the suspension element ( 20 ) is arranged. Flat wiper blade ( 16 ) and / or wiper arm ( 14 ) for a wiper device ( 10 ) according to any one of the preceding claims.