CN103764458A - Device for the articulated connection of a wiper blade of flat bar construction to a wiper arm according to the side lock principle - Google Patents

Abstract

The invention is based on a device for the articulated connection of a wiper blade (10) of flat bar construction to a wiper arm (30) according to the side lock principle, wherein a bearing pin (38) which protrudes laterally on the wiper arm (30) and runs transversely with respect to the longitudinal direction is mounted pivotably in a connecting element (16) which is fastened to the wiper blade (10) and, on the side facing the wiper arm (30), has a retaining finger (24) which, offset towards the drive-side end of the wiper blade (10), is connected to the connecting element (16) at a lateral distance therefrom via a web (28) and, from the side facing a wiper strip (12), engages in the wiper arm (30). It is proposed that the retaining finger (24) has a lug (26) which protrudes in relation to the end side thereof which faces the bearing pin (38) and has a stop surface (56) which points towards the wiper strip (12) and interacts with a further stop surface (54) which lies in the pivoting range relative to the wiper arm (30) and is provided on the wiper arm (30), wherein, in the operating position of the wiper blade (10), the two stop surfaces (54, 56) enclose a pivoting angle (a) therebetween, within the range of which removal or installation is not possible in the direction of the bearing pin (38).

Description

A device for hingedly connecting the wiper blade and the wiper arm in a flat beam structure according to the principle of side lock

technical field

The invention proceeds from a device according to the preamble of claim 1 for the articulated connection of a wiper blade in the form of a flat beam to a wiper arm according to the side-lock principle.

Background technique

From DE 100 36 135 A1 a windshield wiper for a windshield wiper device is disclosed, wherein a wiper blade in the form of a flat beam is connected to a wiper arm via a coupling element according to the side lock Principle Articulated connection. The wiper blade has a wiper strip with a wiper lip, wherein two pre-bent spring rails mounted laterally in longitudinal grooves are provided as carrier elements. In the central region, the divided coupling element is slipped onto the part of the spring rail protruding from the longitudinal groove and held together by bolts extending transversely to the wiper strip. The coupling element has a bearing bore in which a bearing pin protruding laterally from the wiper arm is pivotably mounted.

The coupling element also has a retaining finger on the side facing the wiper arm. It engages in the wiper arm from the side of the wiper arm adjacent to the wiper strip. The wiper arm has a u-shaped cross section at least in the region of the coupling element, which is open towards the wiper strip, so that the retaining finger can engage behind the wiper arm with the adjacent wings of the coupling element. The retaining fingers are offset relative to the bearing pin towards the drive end, so that due to the pivoting movement of the wiper blade relative to the wiper arm, the retaining fingers are disengaged while the retaining fingers are running In the direction of the bearing pin, a position of the wiper blade is ensured in which the end of the wiper arm extends laterally parallel to the wiper blade in the operating position.

Contents of the invention

According to the invention, the retaining finger has a nose which protrudes relative to the end face of the retaining finger facing the bearing pin and has a stop surface directed towards the wiper strip. This stop surface cooperates with a further stop surface which is arranged on the wiper arm in the region of the pivoting relative to the wiper arm, wherein the wiper blade In the operating position, the two stop surfaces enclose between them a pivot angle in the range of which the wiper blade cannot be removed or mounted in the direction of the bearing pin. If the windshield wiper for cleaning the wiper blade is removed from the motor vehicle windshield, the wiper blade cannot be accidentally pivoted into the dismounted position relative to the wiper arm and thus cannot be removed from the The bearing pins are disengaged.

According to an embodiment of the invention, in the case of a wiper arm with a U-shaped profile which is open towards the wiper strip, wherein the retaining fingers engage in the profile, an insert end face Inserted into the u-shaped cross-sectional profile, a stop surface assigned to the wiper arm is arranged on the insert. By means of the insert, which is advantageously produced from plastic in an injection molding process, the stop surface associated with the wiper arm can be adapted in a simple manner to different wiper blades. At the same time, the insert part can end-face the u-shaped profile with a front end wall in that the end wall rests with a cam on the end face of the wiper arm.

According to one refinement of the invention, the insert part rests with a transverse bore on the part of the bearing pin extending in the wiper arm. In order to be able to easily mount the insert, it is expedient if the transverse bore is open towards the nose of the retaining finger, wherein the insert rests on the bearing pin by means of the transverse bore, In this case, the opening is designed as a clip, so that the insert can be clipped onto the bearing pin from the open end face of the wiper arm. The stop surface is arranged on that part of the clip which lies on the wiper strip.

A further refinement of the invention makes it possible that the insert does not have to be removed from the wiper arm in order to remove the wiper blade. In this case, on the inwardly pointing side of the front end wall of the insert, an angled spring clip is fastened, the free wing of which points toward the drive-side end of the wiper arm and has a function as End edge of the stop surface. When the wiper blade is turned into the operating position during installation, the nose presses back against the free wings of the spring clip, which spring back to the In the starting position and with its end edges it cooperates with the stop surface of the nose. For this purpose, it is expedient for the nose to run obliquely with respect to the longitudinal direction of the coupling element on its side facing away from the wiper strip, wherein the side faces a common stop surface of the nose. meet at the edge.

In another embodiment of the present invention, the front end wall on the driven side and the end wall on the driving side of the insert connect the two side walls to each other, wherein the A transversely extending spring connection is arranged on the edge of the wiper strip, which serves as a stop surface on the wiper arm side, wherein the transverse bore is opposite the end of the edge towards the output side stagger. The flexibility and elasticity of the spring connection can be modified by means of cutouts which are provided in the side walls in the longitudinal direction towards both sides of the spring connection. In this case it is expedient if the stop surface runs obliquely on the nose with the side facing away from the wiper strip and thus forms a wedge-shaped cross section. The inclined surface makes it possible for the spring connection to be adapted to the nose with an increased actuating force during installation and removal.

Not only is a device claimed which comprises a wiper blade and a wiper arm, but also a wiper blade with a corresponding coupling element whose retaining fingers have on their driven-side end faces A nose pointing toward the opening, which has a stop surface aligned with the wiper strip, or which extends wedge-shaped towards the opening.

For the purposes of the invention, it is immaterial whether the coupling element is embodied in one piece or in multiple parts, or comprises a cover on which the retaining fingers are arranged.

Likewise, an insert is claimed as a single component, wherein its transverse bore is configured as a clip and clamped on the bearing pin in the region of the wiper arm. In this case, the stop surface is arranged on that part of the clip facing the wiper lip. In a further embodiment, the stop surface of the insert can be formed by a spring clip fastened on the front end wall, or by a spring connection between the side walls of the insert pieces formed.

Description of drawings

Further advantages emerge from the following description of the figures. Embodiments of the invention are shown in the drawings. The drawings, the description and the claims contain numerous combinations of features. Those skilled in the art can also reasonably consider these features individually or appropriately summarize other combinations.

in:

Fig. 1 shows the perspective partial view of the device according to the invention as an exploded view when installed,

Figure 2 shows a side view of the installed device according to Figure 1 in an operating position,

Figure 3 shows a perspective partial view with a longitudinally intersecting wiper arm,

Figure 4 shows a variant of Figure 1,

FIG. 5 shows the variant according to FIG. 4 with a longitudinally intersecting wiper arm in an operating position,

Figure 6 shows another variant of Figure 1,

FIG. 7 shows a side view of the variant according to FIG. 6 with a longitudinally intersecting wiper arm in an operating position, and

FIG. 8 shows a perspective partial view of the variant according to FIG. 6 with a wiper blade pivoted relative to the wiper arm.

Detailed ways

The device for the articulated connection of a wiper blade 10 in the form of a flat beam to a wiper arm 30 according to the side-lock principle essentially consists of a coupling fastened to the wiper blade 10 with a cover 18 Element 16, and a bearing pin 38 and inserts 40, 60, 74 in different embodiments. The wiper blade 10 in the form of a flat beam has a wiper strip 12 which is usually held by carrier elements in the form of one or more spring rails, which are not visible in the drawing. The coupling element 16 is fastened on the spring rail. The spoiler 14 is guided on the spring rails in the longitudinal direction towards both sides of the coupling element 16 .

The end of the wiper arm 30 facing the coupling element 16 has a U-shaped cross-sectional profile which is formed by two side walls 32 , 34 and a cover wall 36 connecting the two side walls. In the operating position ( FIG. 2 ), wiper arm 30 extends laterally approximately parallel to wiper blade 10 . The bearing pin 38 traverses the U-shaped cross-sectional profile of the wiper arm 30 and is fastened in its side walls 32 , 34 , wherein the bearing pin extends from the side wall adjacent to the coupling element 16 . 34 protrudes outwards. The protruding part of the bearing pin 38 is pushed through an opening 22 in the cover 18 into a non-visible bearing bore of the coupling element 16 . To this end, wiper arm 30 must assume an angular position relative to wiper blade 10 such that a free edge of side wall 34 adjacent to coupling element 16 passes past holding finger 24 . The end of the holding finger 24 facing the drive side of the wiper blade 10 is offset relative to the opening 22 and is connected thereto at a distance from the side wall 20 of the cover 18 via a connecting piece 28 . In the region of the connection part 28 , the side wall 34 adjacent to the coupling element 16 has a recess 58 , so that the wiper arm 30 is not hindered in its pivoting movement in the operating position. Furthermore, the retaining finger 24 has a nose 26 on its driven-side end face, which is aligned with the opening 22 of the cover 18 or the bearing pin 38 and has a nose pointing toward the wiper blade. The stop surface 56 of the strip 12.

When the wiper arm 30 is swiveled back into the operating position, the retaining finger 24 engages behind the side wall 34 adjacent to the coupling element 16 , so that the wiper blade 10 runs along the The longitudinal direction of the bearing pin 38 is held relative to the wiper arm 30 . In order that when the wiper blade 10 is removed from the vehicle window, the wiper blade cannot be disengaged from the bearing pin 38 unnoticed, the insert 40 is fitted. The insert is pushed from the end face into the U-shaped cross-section of the wiper arm 30 until its end wall 42 bears against the end face of the wiper arm 30 with a cam 44 . In this position, the insert 40 is guided with a body 46 in the u-shaped cross-sectional profile and fastened via a transverse bore 48 to the bearing pin 38 at the wiper arm 30 on the extended part. For this purpose, the transverse bore 48 is open towards the bearing pin 38 , wherein the opening is designed as a clip 50 so that the insert 40 is fastened releasably on the bearing pin 38 . On the part of the body 46 facing the wiper strip 12 , a stop surface 54 is provided which is in a pivoting position relative to the stop surface 56 on the nose 26 of the retaining finger 24 in the area. The two stop surfaces 54 and 56 permit a pivot angle α of the wiper blade 10 relative to the wiper arm 30 which is smaller than the pivot angle required for removal.

In the embodiment according to FIG. 4 , the insert 60 has an output-side end face 62 and a drive-side end wall 68 , which connect the two side walls 64 , 66 to one another. A transverse bore 70 for the bearing pin 38 is provided in the side walls 64 , 66 . The end wall 62 and the side walls 64 , 66 form a cam 44 with which the end wall 62 , like the end wall 42 in the exemplary embodiment according to FIG. 1 , bears against the wiper wiper. On the end face 52 of the arm 30 . The distance between the end walls 62 , 68 is dimensioned such that sufficient space remains for the retaining fingers 24 in the gap.

An angled spring clip 72 is fastened on the end wall 62 , the free wing of which is aligned with the end on the drive side and which covers the wiper strip 12 from the side in the installed state. Described bearing pin 38. The free edge of the free limb of the spring clip 72 in this case forms the stop surface 54 which cooperates with the stop surface 56 on the nose 26 of the retaining finger 24 . Due to the flexibility of the free limbs of the spring clip 72 , the spring clip can be pushed back via the obliquely extending side of the nose 26 facing away from the wiper strip 12 and then locked back again. live. The spring clamping plate 72 is pressed back manually during removal.

The insert part 74 of the exemplary embodiment according to FIGS. 6 to 8 is similar to the insert part 74 according to the preceding exemplary embodiment. It also has an output-side end wall 62 and a drive-side end wall 68 , which connect the two side walls 64 , 66 to one another. The difference is that instead of the spring clamping plate 72 a spring connection 76 is provided which connects the two side walls 64 , 66 offset on the drive side relative to the transverse bore 70 . Along the longitudinal direction towards both sides of the spring connection part 76 , in the edge of the side walls 64 , 66 directed toward the wiper strip 12 , a cutout 78 is arranged, through which cutout the spring connection can be modified. The spring elasticity of the part 76 , wherein the side faces form the stop surface 54 .

Claims (15)

1. for hingedly connect a swept area of wiper blade (10) and that is flat ridge structure form according to side chain principle, scrape the device of water arm (30), wherein, one sidepiece ground stretches out on water arm (30) described scraping, bearing pin (38) transverse to longitudinal extension can swingingly be bearing in a connection element (16) being fastened on described swept area of wiper blade (10), described connection element refers to (24) having a maintenance towards a described side of scraping water arm (30), described maintenance refers to stagger and be connected with described connection element with the side distance with described connection element (16) via a connection piece (28) with the end of the drive side of described swept area of wiper blade (10), and described in being embedded into, a side towards described Wiper blade bar (12) scrapes water arm (30), it is characterized in that, described maintenance refers to that (24) have a nose (26), with respect to it, the end face towards described bearing pin (38) stretches out described nose, and the stop surface (56) with a described Wiper blade bar of sensing (12), described stop surface with one other in described relative wobble area of scraping water arm (30) in stop surface (54) mating reaction, described in being arranged on, scrapes described stop surface on water arm (30), wherein, described two stop surfaces (54, 56) in the run location of described swept area of wiper blade (10), before them, cross a pivot angle (α), in the region of described pivot angle, cannot carry out along dismounting or the installation of the direction of described rest pin (38).

2. according to device claimed in claim 1, it is characterized in that, the stop surface (56) of described nose (26) or deviate from the side of described Wiper blade bar (12) and extend with respect to the fore-and-aft tilt ground of described connection element (16), wherein, described is met in a common seamed edge.

3. according to device claimed in claim 2, it is characterized in that, extend with respect to the fore-and-aft tilt ground of described connection element (16) two sides of described nose (26).

4. according to device in any one of the preceding claims wherein, it is characterized in that, the described water arm (30) of scraping has Wiper blade bar (12) cross-sectional profiles that open wide, u shape described in one day, described maintenance refers to that (24) are embedded in described cross-sectional profiles, and an insert (40,60,74) is inserted in described cross-sectional profiles end face, described stop surface (54) is set on described insert, and described stop surface is attached troops to a unit in the described water arm (30) of scraping.

5. according to device claimed in claim 4, it is characterized in that, described insert (40,60,74) has the end wall (42,62) in a front, and it is scraped on the end face (52) of water arm (30) described in abutting in a boss (44).

6. according to the device described in claim 4 or 5, it is characterized in that, described insert (40,60,74) by means of a cross drilling (48,70) sit be placed on described bearing pin (38) described scrape water arm (30) in the part of extension.

7. according to device claimed in claim 6, it is characterized in that, the cross drilling (48) of described insert (40) refers to that towards described maintenance the nose (26) of (24) opens wide, wherein, described open construction becomes clip (50) and described areal of support (54) to be arranged in the part lying low with respect to described Wiper blade bar (12) of described clip (50).

8. according to device claimed in claim 5, it is characterized in that, side in the sensing of the end wall (62) in described front tightens the spring clamping plate (72) of a knuckle, the alar part freely of described spring clamping plate point to described swept area of wiper blade (10) drive side end and there is an end seamed edge as stop surface (54).

9. according to device claimed in claim 5, it is characterized in that, the positive end wall (62) of described insert (60,74) and the end wall (68) of a drive side are connected with each other two sidewalls (64,66), wherein, on the edge of the described Wiper blade bar of sensing (12) of described sidewall (64,66), arrange a spring fastenings (76) laterally extending, it is as stop surface (54), wherein, described cross drilling (70) staggers towards the end of described drive side with respect to described edge.

10. according to device claimed in claim 9, it is characterized in that, in described sidewall (64,66), the both sides towards described spring fastenings (76) arrange otch (78) along the longitudinal.

11. are the swept area of wiper blade (10) of flat ridge structure form, there is a connection element (16), in described connection element, by the opening (22) in a sidewall (20), can support swingably a sidepiece and scrape from one the bearing pin (38) that water arm (30) stretches out, and the side that described connection element is scraped water arm (30) described in pointing to has a maintenance at the drive side of described opening (22) and refers to (24), it is characterized in that, described maintenance refers to that (24) have the described opening of a sensing (22) on the end face of its slave end, the nose stretching out with respect to described end face (26), described nose has the stop surface (56) of a described Wiper blade bar of aligning (12).

12. according to the device described in claim 11, it is characterized in that, described nose (26) extends towards described opening (22) wedge shape ground.

13. for one according to the insert of the device described in claim 4 to 10 any one (40,60,74), it is characterized in that, described insert forms a boss (44) and has a cross drilling for a bearing pin (38) (48,70) with its positive end wall (42,62,74), and along described cross drilling (48,70) circumferentially there is a stop surface (54) pointing to away from described Wiper blade bar (12), described stop surface is in described relative wobble area of scraping water arm (30) and described swept area of wiper blade (10).

14. according to the insert described in claim 13 (40), it is characterized in that, described cross drilling (48) becomes the clip (50) for described bearing pin (38) towards the open ended and described open construction of described slave end.

15. according to the insert described in claim 13 (40,60,74), it is characterized in that, described stop surface (54) forms by a spring clamping plate (72) or a spring fastenings (76).

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