DE102012103962A1 - Connection structure for connecting wiping leaf with wiper arm of vehicle, has boundary edges that are formed rectilinearly, and spacing between boundary edges that are set similar to height of holding element - Google Patents

Abstract

The connection structure (10) has a holding element (23) that is positioned apart from inserting opening (27) in operational position of wiping leaf (50) along wiping lengthwise direction of blade (52). The parallel partial sections (25,26) of retainer (21) are arranged parallel to wiping lengthwise direction of blade. The boundary edges (31,32) are formed rectilinearly, and spacing (a) between boundary edges are set similar to height of the holding element.

Description

State of the art

The invention relates to a wiper arm / wiper blade connection according to the preamble of claim 1. Furthermore, the invention relates to a wiper blade for use in a wiper arm / wiper blade connection according to the invention.

A wiper arm / wiper blade connection according to the preamble of claim 1 is known from WO 03/084789 known. The known wiper arm / wiper blade connection has on a wiper blade-side adapter element on in each case one side face of the adapter element a pin which is round in cross-section and which is insertable into a respective slot-shaped receptacle formed on a side face of a wiper arm. The receptacle in the wiper arm has on the wiper blade side facing an insertion, into which the pin is inserted. Furthermore, the inclusion of arcuate boundary walls is limited, along which the pins are guided along. In the end position of the wiper blade or of the wiper blade-side adapter element on the wiper arm, additional detent connections between the wiper blade-side adapter element and the wiper arm ensure that the wiper blade is fixed in the wiper arm in a direction parallel to the wiper blade longitudinal axis. The wiper arm / wiper blade connection known from the cited document is characterized in that the receptacles in the region of the wiper arm are recognizable from the outside, so that a relatively simple insertion of the retaining elements into the receptacles is made possible for an operator, as this enables both the receptacles, as well as the holding elements can visually perceive. Basically desirable is a possible simple and intuitive for an operator recognizable mounting and dismounting possibility of a wiper blade on a wiper arm. The arcuate design of the recording on the wiper arm, however, the intuitive perception is difficult because the operator must also perform an arcuate movement so that the wiper blade-side adapter element can assume its final position in which this is locked to the wiper arm.

Disclosure of the invention

Based on the illustrated prior art, the invention has the object, a wiper arm / wiper blade connection according to the preamble of claim 1 such that a particularly simple assembly and disassembly of a wiper blade on the wiper arm is made possible. This object is achieved in a wiper arm / wiper blade connection with the features of claim 1, characterized in that the receptacle (the wiper arm) in the region of the insertion opening has a first portion which is arranged perpendicular to the wiper blade longitudinal direction, and that adjoins the first portion second section of the receptacle extends parallel to the wiper blade longitudinal direction and has two mutually parallel boundary edges or walls, which are formed in a straight line and have a distance from one another, which corresponds to the height of the holding element. By such a configuration according to the invention of the receptacle and the retaining element, the advantage is achieved that the wiper blade-side adapter element is inserted into the receptacle in the manner of a positive guide up to its final position, wherein the movement takes place by two adjoining partial movements, wherein the one (first) movement direction perpendicular to the wiper blade longitudinal axis, and the second, subsequent movement direction parallel to the wiper blade longitudinal axis. Such a movement is intuitively particularly easy for an operator to detect or corresponds to a natural movement sequence, so that a particularly simple and unambiguous assembly or disassembly of the wiper blade on the wiper arm is made possible.

Advantageous developments of the wiper arm / wiper blade connection according to the invention are listed in the subclaims. All combinations of at least two of the features disclosed in the claims, the description and / or the figures fall within the scope of the invention.

Particularly preferred is a geometrical configuration of the receptacle, in which the receptacle in the first subsection narrows as viewed from the direction of the insertion opening. By this kind of the shape of the receptacle, the advantage is achieved that the insertion of the retaining element is facilitated in the insertion opening for the operator, since he can introduce this with a relatively large tolerance in the insertion, and that then in the movement of the wiper blade-side adapter element vertically led to the wiper blade longitudinal axis, the holding element in the recording aligns.

The effect of such positive guidance or a particularly simple insertion of the holding element into the insertion opening can be assisted if the holding element has a decreasing towards the insertion opening width, and if the narrowest cross section of the first section in a plane parallel to the wiper blade longitudinal direction of the maximum Width of the retaining element corresponds.

In a further constructive embodiment of the connection, it is provided that the second section in extension of the first section, that is, on the side facing the first section, a perpendicular to Has wiper blade longitudinal axis extending boundary surface. As a result, the advantage is achieved that when breaking a latching tongue of the latching connection, which is usually used to lock the wiper blade in the wiper arm in its operating position in wiper blade longitudinal direction, although a movement of the wiper blade in the region of the second section in demounting is made possible that when striking or tarnishing of the retaining element to the boundary surface but not perpendicular to the wiper blade longitudinal direction, that is, in the disassembly direction acting force is achieved. As a result, the reliability of the wiper device is increased, since even with a breakage of the latching tongue, a release of the wiper blade from the wiper arm is at least difficult.

In a further advantageous embodiment of the invention, it is provided that in the operating position of the wiper blade in the receptacle, the holding element is arranged vertically below a pivot axis of the adapter element and thus of the wiper blade on the wiper arm. Such a configuration has the advantage that when lifting off a wiper blade which may have been frozen on a disk, the force is introduced centrally and thus damage to the wiper blade is prevented.

In order to mechanically protect the wiper arm on its side facing away from the vehicle and to allow a flat outer contour together with the adapter element, it is also proposed that the adapter element on the side facing away from the wiper arm a the end face of the wiper arm and the recording of the wiper arm covering end cap having.

A particularly secure and mechanically strong connection between the wiper arm and the wiper blade is achieved if two receptacles are arranged on each side of the wiper arm having a U-shaped cross section in the region of the adapter element, and if the adapter element has two holding elements on each side surface.

In order to enable disassembly of the wiper blade, in which this is moved in the direction of the wiper arm, moreover, it is proposed that the width of the adapter element is adapted to the width of the opening cross-section of the wiper arm and corresponds thereto. As a result, the wiper blade adapter in the opening cross section of the wiper arm in the connection region in the wiper blade longitudinal direction can be moved in both directions.

The invention also includes a wiper blade for use in a wiper arm / wiper blade connection according to the invention. Such a wiper blade has the advantage that it can be easily mounted or dismounted by an operator on the wiper blade.

Further advantages, features and details of the invention will become apparent from the following description of preferred embodiments and from the drawing.

This shows in:

1 to 3 in each case in longitudinal section different wiper arm / wiper blade connections according to the invention,

4 a cross-section in the plane IV-IV of 3 .

5 and 6 compared to the 1 to 3 modified wiper arm / wiper blade connections using in each case two retaining elements on both sides of a wiper blade-side adapter element and two receptacles on a side surface of the wiper arm,

7 and 8th a further modified wiper arm / wiper blade connection in longitudinal section and in cross section and

9 a plan view of a wiper arm / wiper blade connection according to the 1 to 3 ,

The same elements or elements with the same function are provided in the figures with the same reference numerals.

In the 1 is a first wiper arm / wiper blade connection according to the invention, hereinafter only as a connection 10 designated, shown. The connection 10 serves to form a detachable connection 10 between one in the 3 partially wiper blade shown 50 with a wiper arm 1 , The wiper arm 1 is formed in a conventional manner as a punched / bent part and has according to a synopsis of 3 and 4 a U-shaped receiving area in cross section 2 for receiving a wiper blade-side adapter element 11 on. The recording area 2 is formed by a the top of the wiper arm 1 training section 3 , two of which, perpendicular to the wiper blade 50 protruding side legs 4 . 5 out. In the area of the section 3 is beyond a through hole 6 formed, which together with one on the adapter element 11 molded detent tongue 12 with mounted wiper blade 50 a locking connection 15 formed. The wiper blade-side adapter element 11 is in a known manner with a in the 3 illustrated wiper blade body 51 connected, which is designed in particular as a squeegee and has at least one spring rail for stiffening. In the operating position of the wiper blade 50 on the wiper arm 1 runs in the 3 shown wiper blade longitudinal direction or wiper blade longitudinal axis 52 at least approximately parallel to the wiper arm longitudinal axis 53 , As in particular on the basis of 4 can be seen, there is the wischarmseitige adapter element 11 from one with the wiper blade body 51 connected first element 16 that in a swivel axis 17 in a second element 18 is pivotally mounted. The second element 18 encompasses the first element 16 on its side surfaces. The second element 18 the wiper blade side adapter element 11 is in turn with the wiper arm 1 connected. Based on 1 and 9 It can also be seen that the second element 18 on the wiper arm 1 facing away from an end cap 19 carries the (open) receiving area 2 of the wiper arm 1 completely covered on the front side, so that when mounted wiper blade 50 between the wiper blade 50 or the adapter element 11 and the wiper arm 1 a closed outer contour is created. Further carries the second element 18 still the catch tongue 12 for the formation of the locking connection 15 with the wiper arm 1 ,

In the area of the two side legs 4 . 5 of the wiper arm 1 is in each case a trained as a breakthrough recording 21 . 22 for receiving one on the adapter element 11 or on the second element 18 of the adapter element 11 integrally formed retaining element 23 . 24 educated. The pictures 21 . 22 are in two sections 25 . 26 divided up. The first section 25 each extends in a direction perpendicular to the wiper arm longitudinal axis 53 or to the wiper blade longitudinal axis 52 and points to the adapter element 11 facing side an insertion 27 on. The opening width w of the insertion opening 27 decreases with increasing distance from the insertion opening 27 , In the in the 1 and 2 illustrated embodiment, the first section 25 each obliquely arranged boundary edges 28 . 29 on, so the first subsection 25 Trapezoidal is formed.

The first section 25 subsequent, rectilinear second section 26 is parallel to the wiper blade longitudinal axis 52 or to the wiper arm longitudinal axis 53 aligned. It includes a lower boundary edge 31 and an upper boundary edge 32 , The mutual distance a of the two boundary edges 31 . 32 is the height h of the holding element 23 . 24 adapted, such that the height h the distance a of the two boundary edges 31 . 32 corresponds to each other. In the in the 1 illustrated embodiment, the second section 26 beyond lateral boundary edges 33 . 34 on, the shape or orientation of the corresponding side surfaces of the holding elements 23 . 24 are adjusted.

The installation of the wiper blade 50 with the adapter element 11 on the wiper arm 1 takes place at the in the 1 illustrated embodiment of the connection 10 in that the two retaining elements 23 . 24 first in the insertion opening 27 are introduced, and from there the adapter element 11 further up, ie perpendicular to the wiper blade longitudinal axis 52 in the direction of the second subsection 26 the recording 21 . 22 is moved. It finds a centering of the wiper blade 50 or the adapter element 11 in wiper blade longitudinal direction to the wiper arm 1 instead of. Once the tops of the retaining elements 23 . 24 in contact with the upper boundary edges 32 the recordings 21 . 22 Guess is a movement of the wiper blade adapter 11 only in the direction of the arrow 35 , ie parallel to the wiper arm longitudinal axis 53 , possible. In the end position, ie in the operating position of the wiper blade 50 on the wiper arm 1 , lies the holding element 23 . 24 with its corresponding boundary surface at the lateral boundary edge 33 the recording 21 . 22 at, while the locking connection 15 between the latching tongue 12 and the through hole 6 on the wiper arm 1 is trained. For loosening or disassembling the wiper blade 50 from the wiper arm 1 must be the catch tongue 12 in the passage opening 6 be pressed in, leaving the wiper blade 50 against the direction of the arrow 35 can be moved.

The in the 2 illustrated modified compound 10a is different from the connection 10 according to 1 in that the one lateral boundary edge 33 of the second subsection 26 perpendicular to the wiper blade longitudinal axis 52 or to the wiper arm longitudinal axis 53 is arranged. This is due to a disassembly of the wiper blade 50 from the wiper arm 1 , or if the catch tongue 12 is broken, the one boundary edge 36 of the holding element 23 . 24 at the lateral boundary edge 33 the recording 21 . 22 such that no perpendicular to the wiper blade longitudinal direction 52 , ie force component acting in the dismounting direction on the wiper blade 50 is produced.

At the connection 10b according to the 3 is the second section 26 the recording 21 . 22 arranged such that in the in 3 shown operating position of the wiper blade 50 the holding element 23 . 24 vertically below the swivel axis 17 runs.

In the 5 and 6 is a connection 10c shown in which on each side surface of the adapter element 11 two holding elements each 23 . 24 are formed or arranged in a side view rectangular cross-sectional area. Furthermore, the two subsections are also 25c . 26c each rectangular in shape and arranged perpendicular to each other.

Last is in the 7 and 8th a connection 10d shown in which the adapter element 11d , with the exception of the retaining elements 23 . 24 , a width b, which is the width of the opening cross-section of the receiving area 2 is adjusted and corresponds to this. Furthermore, the arrangement of the second sections 26d or the holding elements 23 . 24 according to the 3 also such that in the in the 7 illustrated operating position of the wiper blade 50 on the wiper arm 1 the holding elements 23 . 24 vertically below the pivot axis 17 are arranged. The connection 10d allows the wiper blade 10 in the direction of the arrow 37 from the wiper arm 1 to disassemble, ie, the wiper blade 50 towards the wiper arm 1 can be postponed.

The compounds described so far 10 . 10a to 10d can be modified or modified in many ways without departing from the spirit of the invention. In particular, the compounds 10 . 10a to 10d in principle with all wiper blades known from the prior art 50 usable.

LIST OF REFERENCE NUMBERS

1

wiper arm

2

reception area

3

section

4

side leg

5

side leg

6

Through opening

10, 10a to 10d

connection

11, 11d

adapter element

12

catch tongue

15

locking connection

16

first element

17

swivel axis

18

second element

19

end cap

21

admission

22

admission

23

retaining element

24

retaining element

25, 25c

part Of

26, 26c, 26d

part Of

27

insertion

28

boundary edge

29

boundary edge

31

lower boundary edge

32

upper boundary edge

33

boundary edge

34

boundary edge

35

arrow

36

boundary edge

37

arrow

50

wiper blade

51

Wiper blade body

52

Wiper blade longitudinal axis

53

Wischarmlängsachse

a

distance

w

opening width

H

height

b

width

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

• WO 03/084789 [0002]

Claims (10)

Wiper arm / wiper blade connection ( 10 ; 10a to 10d ), with a wiper blade ( 50 ), which is a wiper blade-side adapter element ( 11 ; 11d ), with at least one wischarmseitigen recording ( 21 . 22 ), which are attached to a side wall ( 4 . 5 ) of a wiper arm ( 1 ) is formed as a breakthrough, wherein the recording ( 21 . 22 ) to the wiper blade-side adapter element ( 11 ; 11d ) in the region of an insertion opening ( 27 ) is open and with an on the wiper blade side adapter element ( 11 ; 11d ) towards the recording ( 21 . 22 ) protruding holding element ( 23 . 24 ), which is included in the 21 . 22 ) is insertable, and wherein the retaining element ( 23 . 24 ) in the operating position of the wiper blade ( 50 ) in one of the insertion opening ( 27 ) in wiper blade longitudinal direction ( 52 ) spaced position is arranged, such that the holding element ( 23 . 24 ) in a direction perpendicular to the wiper blade longitudinal direction ( 52 ) extending direction in the recording ( 21 . 22 ), characterized in that the receptacle ( 21 . 22 ) in the region of the insertion opening ( 27 ) a first subsection ( 25 ), which is perpendicular to the wiper blade longitudinal direction ( 52 ), and that a to the first subsection ( 25 ) Subsequent second subparagraph ( 26 ) of the recording ( 21 . 22 ) parallel to the wiper blade longitudinal direction ( 52 ) and two mutually parallel boundary edges ( 31 . 32 ), which are rectilinear and have a distance (a) to each other, the height (h) of the holding element ( 23 . 24 ) corresponds. Wiper arm / wiper blade connection according to claim 1, characterized in that the receptacle ( 21 . 22 ) in the first subsection ( 25 ) has an opening width (w), which, starting from the insertion opening ( 27 ), narrowed. Wiper arm / wiper blade connection according to claim 2, characterized in that the retaining element ( 23 . 24 ), relative to the wiper blade longitudinal direction ( 52 ), one towards the insertion opening ( 27 ) and that the narrowest cross-section of the first section ( 25 ) in a plane parallel to the wiper blade longitudinal direction ( 52 ) of the maximum width of the retaining element ( 23 . 24 ) corresponds. Wiper arm / wiper blade connection according to claim 3, characterized in that the shape of the first section ( 25 ) and the retaining element ( 23 . 24 ) is approximately trapezoidal in each case. Wiper arm / wiper blade connection according to one of claims 1 to 4, characterized in that the second section ( 26 ) in extension of the first part ( 25 ) one perpendicular to the wiper blade longitudinal direction ( 52 ) extending boundary surface ( 33 ) having. Wiper arm / wiper blade connection according to one of claims 1 to 5, characterized in that in the operating position of the wiper blade ( 50 ) the adapter element ( 11 ; 11d ) in the recording ( 21 . 22 ) the retaining element ( 23 . 24 ) vertically below a pivot axis ( 17 ) of the adapter element ( 11 ; 11d ) is arranged. Wiper arm / wiper blade connection according to one of claims 1 to 6, characterized in that the adapter element ( 11 ) on the wiper arm ( 1 ) facing away from the end face of the wiper arm ( 1 ) covering end cap ( 19 ) having. Wiper arm / wiper blade connection according to one of claims 1 to 7, characterized in that on each side of the in the region of the adapter element ( 11 ) has a U-shaped cross-section wiper arm ( 1 ) two shots ( 21 . 22 ) are arranged, and that the adapter element ( 11 ) on each side surface two holding elements ( 23 . 24 ) having. Wiper arm / wiper blade connection according to one of claims 1 to 8, characterized in that the width (b) of the adapter element ( 11d ) the width of the opening cross-section of the wiper arm ( 1 ) is adjusted and corresponds to this. Wiper blade ( 50 ) for use with a wiper arm / wiper blade connection ( 10 ; 10a to 10d ) according to one of claims 1 to 9.

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