DE202012102614U1 - Connecting device for windscreen wipers - Google Patents

Abstract

Connecting device for windshield wipers, which is used to connect a wiper blade to a wiper arm, characterized in that the connecting device comprises a fastening bearing (1) and a connecting element (2), the fastening bearing (1) being firmly mounted in the center of the wiper blade, with the Fastening bearing (1) two blocking disks (11) are formed, between which a cavity (12) is formed, a hollow cylinder pin (13) being arranged on the upper part of the two blocking disks (11), the connecting element (2) on the fastening bearing (1 ) is arranged, wherein the connecting element (2) is designed as a downwardly open hollow body and has a downwardly open locking recess (21), wherein on the front and the rear side of the locking recess (21) a first and a second mating surface ( 211, 212) are formed, two pivot holes (22) are provided in the middle part of the connecting element (2) with which d he cylinder pin (13) of the mounting bearing (1) fits together, with e

Description

Technical area

The invention relates to a windshield wiper, in particular a connecting device for connecting a wiper blade of a windshield wiper with a wiper arm mounted in front of a windshield of a car.

State of the art

A windshield wiper is mounted in front of a car's windscreen to remove rainwater or foreign matter from the windshield so that the driver's vision is not obstructed. The wiper blade of the windscreen wiper is connected via a connecting device with a wiper arm mounted in front of the windshield of the car, wherein the connecting device is usually designed according to the construction of the wiper arm. The connector typically includes a mounting bracket and a connector, the mounting bracket being secured in the center of the wiper blade and the connector mounted to the mounting bracket, the mounting bracket and the connector being further connected to the wiper arm after assembly. Most conventional windshield wiper connection devices provide a fixed connection wherein the mounting bracket is welded or riveted to the wiper blade and the connector is riveted to the mounting bracket by rivets.

However, in the conventional connection devices for fixed connection wipers, there is a disadvantage that the entire wiper needs to be replaced or discarded when the wiper blade or the connection device is partially damaged, causing waste. In addition, the wiper arms of cars of various makes and models are constructed differently and fit only with windshield wipers with appropriately constructed connecting devices, wherein a fixedly mounted connecting device leads to poor fit of the windscreen wiper, so that no combination of wiper arms and wiper blades is possible.

Object of the invention

The invention has for its object to provide a connecting device for windshield wipers, which are connected to differently constructed wiper arms, so that a wiper blade with wiper arms of several different structures can match.

Technical solution

This object is achieved by a connecting device for windshield wipers with the features of claim 1. Advantageous embodiments are the subject of the dependent claims.

The object is achieved by a connecting device for windshield wipers, which serves to connect a wiper blade with a wiper arm and a mounting bearing and a connecting element, wherein the mounting bearing is fixedly mounted in the middle of the wiper blade, wherein on the mounting bearing two blocking discs are formed, between which a cavity is formed, wherein a hollow cylindrical pin is arranged on the upper part of the two blocking discs. The connecting element is arranged on the mounting bearing, wherein the connecting element is designed as a downwardly open hollow body and has a downwardly open latching recess, wherein at the front and the rear side of the latching recess, a first and a second mating surface are formed, wherein in the middle part of the connecting element are provided two pivot bearing holes, with which the cylinder pin of the mounting bearing mates, starting from the bottom, a projecting edge extends to both sides, wherein at the front end of the protruding edge a first blocking surface and at the rear end thereof an oblique cut surface is formed. At the top of the connecting element, two protruding steps, an elastic locking piece and a wedge are arranged. Starting from the rear end of the connecting element, a resilient dovetail locking lug extends, which laterally forms a second and a third vertically extending blocking surface.

At the front end of the connecting element may protrude two blocking discs, which form a head part, wherein between the two blocking discs, a limiting cavity is formed at the front end of a pin is arranged, by means of which a cover is rotatably mounted.

On the side walls of the two blocking discs symmetrical detent openings may be provided, which are each provided with elastic latches. At the rear end of the two blocking discs can be formed in each case a fourth blocking surface.

The cover may be rotatably mounted on the pin in the restriction cavity, wherein at the front end of the cover, a C-shaped recess is arranged, which mates with the pin. In the middle part of the cover can two Be provided locking projections barbs. On the cover may further be provided a detent which projects downwardly, wherein a side surface of the detent is designed as an arcuate support surface. At the distal end of the cover may be formed an opening, the inner surface of which is designed as a surface with concave and convex points.

Furthermore, the connecting element can be connected to an upper cap having a downwardly open U-shaped cavity, which is made in such a size that the upper cap can cover the connecting element. At the front end of the U-shaped cavity, an arcuate support surface is formed, wherein on both side walls of the U-shaped cavity symmetrical latching hooks are provided. Near the rear end of the U-shaped cavity protrudes a step. At the top of the upper cap, an opening is provided. On the side walls of the upper cap passage openings are arranged corresponding to the pivot bearing holes of the connecting element, wherein on one side of the passage opening, a connecting surface is formed.

On the connection surface, a plurality of slip-resistant ribs may be arranged.

The mounting bearing and the connecting element can be integrally formed.

Compared with the prior art, the windshield wiper connecting device according to the invention is advantageous in that it can mate with wiper arms of several different types of construction, so that the windshield wiper is suitable for cars of different makes and models. In addition, the mounting of the connecting device to wiper arms of various structures can be easily performed, with no riveting or welding is required, so that the connecting device can be easily disassembled and replaced.

Brief description of the drawings

1 shows a perspective view of a connecting device according to the invention for windshield wipers in the disassembled state.

2 shows a perspective view of the connecting device according to the invention from a viewing angle in the disassembled state.

2A shows a bottom view of an upper cap of the connecting device according to the invention.

3 . 3A and 3B show a first embodiment of the connecting device according to the invention in a perspective view and in section.

4 . 4A and 4B show a second embodiment of the connecting device according to the invention in a perspective view and in section.

5 . 5A and 5B show a third embodiment of the connecting device according to the invention in a perspective view and in section.

6 . 6A and 6B show a fourth embodiment of the connecting device according to the invention in a perspective view and in section.

7 . 7A . 7B and 7C show a fifth embodiment of the connecting device according to the invention in a perspective view and in section.

8th . 8A . 8B and 8C show a sixth embodiment of the connecting device according to the invention in a perspective view and in section.

embodiments

In the following, objects, features and advantages of the present invention will become more apparent from the detailed description of embodiments and the accompanying drawings. However, the invention should not be limited to the description and the accompanying drawings.

1 . 2 and 2A show a connecting device according to the invention for windshield wiper, which serves to connect a wiper blade with a wiper arm and a mounting bearing 1 and a connecting element 2 includes, wherein the mounting bearing 1 and the connecting element 2 can be formed integrally or separately, in this embodiment, the mounting bearing 1 and the connecting element 2 are formed separately. The mounting camp 1 is fixedly mounted in the middle of the wiper blade, being on the mounting bracket 1 two blocking discs 11 are formed, between which a cavity 12 is formed, wherein the upper part of the two blocking discs 11 a hollow cylinder pin 13 is arranged, between the two blocking discs 11 semicircular is formed to avoid the wiper arm.

The connecting element 2 is designed as a downwardly open hollow body and has a downwardly open locking recess 21 on, wherein at the front and the rear side of the locking recess 21 a first and a second mating surface 211 . 212 are formed, wherein in the middle part of the connecting element 2 two pivot holes 22 are provided, with which the cylinder pin 13 of the mounting camp 1 mates, starting from the bottom of a projecting edge 23 runs on both sides, wherein at the front end of the protruding edge 23 a first blocking surface 231 and at the rear end thereof an oblique cut surface 232 is trained. At the top of the connecting element 2 are two protruding steps 24 , an elastic locking piece 25 and a triangular wedge 26 arranged. From the rear end of the connecting element 2 starting a elastic dovetail catch extends 27 , the side of a second and a third vertically extending blocking surface 271 . 272 forms.

At the front end of the connecting element 2 protrude two blocking discs 28 which form a head part, being between the two blocking discs 28 a boundary cavity 281 forms, at the front end of a pin 282 is arranged, by means of which a cover 29 is rotatably mounted. On the side walls of the two blocking discs 28 are detent openings 283 arranged symmetrically, each with elastic latches 284 are provided. At the rear end of the two blocking discs 28 is in each case a fourth blocking surface 285 educated. The cover 29 is rotatable on the pin 282 in the boundary cavity 281 stored, with the front end of the cover 29 a C-shaped recess 291 is arranged with the pen 282 matches. In the middle part of the cover 29 are two locking projections 292 provided with barbs. At the cover 29 is also a catch 293 provided, which projects downwards, wherein a side surface of the latch 293 as an arcuate support surface 294 is executed. At the distal end of the cover 29 is an opening 295 formed, the inner surface as a surface with concave and convex points 296 is executed. Furthermore, the connecting element 2 with an upper cap 3 be connected, which has a downwardly open U-shaped cavity 31 which is made in such a size that the upper cap 3 the connecting element 2 can cover. At the front end of the U-shaped cavity 31 is an arcuate support surface 32 formed, wherein on both side walls of the U-shaped cavity 31 symmetrical latching hooks 33 are provided. Near the rear end of the U-shaped cavity 31 protrudes a step 34 out. When connecting the upper cap 3 with the connecting element 2 fits the arcuate support surface 32 with the fourth blocking surface 285 of the connecting element 2 together and adjust the level 34 with the second blocking surface 271 of the connecting element 2 together, with the latching hook 33 in the preceding margin 23 at the bottom of the connecting element 2 engages the upper cap 3 to fix. Furthermore, at the top of the top cap 3 an opening 35 provided, from which the elastic locking piece 25 of the connecting element 2 protrudes. On the side walls of the upper cap 3 are through holes 36 according to the pivot bearing holes 22 of the connecting element 2 arranged, wherein on one side of the passage opening 36 a connection surface 37 is formed, on which a variety of slip-resistant ribs 38 is arranged.

When assembling the connecting device, the connecting element 2 on the mounting camp 1 put on and be the pivot holes 22 in the middle part of the connecting element 2 to match with the hollow cylinder pin 13 of the mounting camp 1 brought. Next, the connecting device via the mounting bracket 1 fixedly mounted in the central part of the wiper blade of the windscreen wiper, so that the connecting device is connectable with wiper arms of several different types, which helps that the windscreen wiper for cars of different makes and models is suitable. In the following several embodiments are shown.

3 . 3A and 3B show a first embodiment of the connecting device according to the invention, which with a hook-shaped wiper arm 4A is connectable. The hook-shaped wiper arm 4A is a conventional wiper arm and forms a curved hook at the front end 41A , When mounting, the at one end of the connecting element 2 rotatably mounted cover 29 lifted. After that, the curved hook 41A at the front end of the wiper arm 4A through the boundary cavity 281 of the connecting element 2 guided and to hook the cylinder pin 13 of the mounting camp 1 brought, with the first mating surface 211 and the elastic locking piece 25 of the connecting element 2 brought to mate with the wiper arm and thereby positioned. Next is the cover 29 turned down, with the locking projections 292 the cover 29 into the detent openings 283 be pressed. In addition, the arcuate support surface 294 the latch 293 at the distal end for supporting at the bent point of the bent hook 41A the wiper arm brought to the wiper arm 4A to stabilize and position. To open the cover 29 vice versa, the two at the detent openings 283 arranged elastic latches 284 pressed against the locking projections 292 so press that the detent openings 283 leave. After opening the cover 29 The wiper arm can be removed and dismantled or replaced.

4 . 4A and 4B show a second embodiment of the connecting device according to the invention, with another hook-shaped wiper arm 4B is connectable. The hook-shaped wiper arm 4B is a conventional wiper arm and forms a curved hook at the front end 41B , In the second embodiment, the connection with the connection device of the connection in the first embodiment is similar, the difference being merely that the hook-shaped wiper arm 4B thicker than the previous wiper arm 4A and the curved hook 41B is longer than the curved hook 41A so that the curved hook 41B of the wiper arm 4B after passing through the boundary cavity 281 guided and to hook the cylinder pin 13 of the mounting camp 1 is brought to mate with the second mating surface 212 and the elastic locking piece 25 of the connecting element 2 brought and thereby positioned.

5 . 5A and 5B show a third embodiment of the connecting device according to the invention, with a U-shaped wiper arm 4C is connectable. The U-shaped wiper arm 4C is a conventional wiper arm, has a downwardly open U-shaped cavity 41C on, at the front end of the wiper arm 4C a latching hook 42C protrudes. At the bottom of the two side walls is an engagement surface 43C arranged, which is beveled and with the third blocking surface 272 on the elastic dovetail catch 27 of the connecting element 2 matches. To mount the wiper arm 4C First, the locking hook 42C at the front end of the wiper arm 4C in the opening 295 the cover 29 inserted and from the surface with concave and convex points 296 on the inside of the opening 29 supported. Next is the wiper arm 4C on the connecting element 2 placed so that he is the connecting element 2 covered, with the front end of the wiper arm 4C against the first blocking surface 231 of the connecting element 2 presses and the engagement surface 43C at the lower part of the side walls against the third blocking surface 272 of the connecting element 2 suppressed. In this way, the wiper arm 4C fixed.

6 . 6A and 6B show a fourth embodiment of the connecting device according to the invention, with another U-shaped wiper arm 4D is connectable. The U-shaped wiper arm 4D is the wiper arm 4C similar to the third embodiment and also has a downwardly open U-shaped cavity 41D on, at the front end of the wiper arm 4D a latching hook 42D protrudes. At the bottom of the two side walls is a contact surface 43D arranged with the second blocking surface 271 on the elastic dovetail catch 27 of the connecting element 2 matches. In addition, at the top of the wiper arm 4D a catch recess 44D arranged. To mount the wiper arm 4D is also first the locking hook 42D at the front end of the wiper arm 4D in the opening 295 the cover 29 inserted and from the surface with concave and convex points 296 on the inside of the opening 29 supported. Next is the wiper arm 4D sliding on the connecting element 2 placed so that he is the connecting element 2 covered, with the triangular wedge 26 at the top of the connecting element 2 in the locking recess 44D at the top of the wiper arm 4D engages with the front end of the wiper arm 4D against the first blocking surface 231 of the connecting element 2 presses and the contact surface 43D at the lower part of the side walls against the second blocking surface 271 the elastic dovetail catch 27 suppressed. In this way, the wiper arm 4D fixed.

7 . 7A . 7B and 7C show a fifth embodiment of the connecting device according to the invention, which with a conventional wiper arm 4E is connectable. Laterally of the front end of the wiper arm 4E is a U-shaped cavity 41E formed, at the top of an opening 42E is trained. At the bottom of the U-shaped cavity 41E are symmetrical snap edges 43E educated. To mount the wiper arm 4E sliding on the connecting element 2 placed so that he is the connecting element 2 covered, with the front end of the U-shaped cavity 41E against the above stage 24 pushes and the curbs 43E on the ground in the protruding edge 23 of the connecting element 2 firmly intervene, wherein the elastic locking piece 25 at the top of the connecting element 2 in the opening 42E of the wiper arm 4E engages, creating a connection of the wiper arm 4E is realized with the connecting device.

8th . 8A . 8B and 8C show a sixth embodiment of the connecting device according to the invention, with another conventional, laterally insertable wiper arm 4F is connectable. Laterally of the front end of the wiper arm 4F is a U-shaped cavity 41F formed, from the side wall of a cylinder 5 protrudes. Furthermore, a latching hook protrudes 43F from a lateral side of the U-shaped cavity 41F out. For mounting, first the upper cap 3 on the connecting element 2 placed so that he is the connecting element 2 covered, wherein the latch hook 33 the upper cap 3 in the preceding margin 23 at the lower part of the connecting element 2 firmly locks into place, with the step 34 in the U-shaped cavity 31 the upper cap 3 with the second blocking surface 271 of the connecting element 2 Fits to the top cap 3 to fix. After that, the cylinder becomes 5 of the wiper arm 4F in the passage opening 36 the upper cap 3 and in the cylinder pin 13 of the mounting camp 1 plugged in. Next is the catch hook 43F of the wiper arm 4F to match with the anti-slip ribs 38 the interface 37 the upper cap 3 brought to the wiper arm 4F to connect with the connecting device.

The invention thus relates to a connecting device for windscreen wipers, which serves for connecting a wiper blade with a wiper arm and a mounting bearing 1 and a connecting element 2 includes, wherein the mounting bearing 1 is firmly mounted in the middle of the wiper blade, being on the mounting bracket 1 two blocking discs 11 are formed, between which a cavity 12 is formed, wherein the upper part of the two blocking discs 11 a hollow cylinder pin 13 is arranged. The connecting element 2 is at the mounting camp 1 arranged, wherein the connecting element 2 is designed as a downwardly open hollow body and a downwardly open locking recess 21 having, wherein at the front and the rear side of the locking recess 21 a first and a second mating surface 211 . 212 are formed, wherein in the middle part of the connecting element 2 two pivot holes 22 are provided, with which the cylinder pin 13 of the mounting camp 1 mates, starting from the bottom of a projecting edge 23 runs on both sides, wherein at the front end of the protruding edge 23 a first blocking surface 231 and at the rear end thereof an oblique cut surface 232 is trained. At the top of the connecting element 2 are two protruding steps 24 , an elastic locking piece 25 and a wedge 26 arranged. From the rear end of the connecting element 2 starting a elastic dovetail catch extends 27 , the side of a second and a third vertically extending blocking surface 271 . 272 formed.

The foregoing description represents only the preferred embodiments of the invention and is not intended to limit the scope of the claims. All equivalent changes and modifications that those skilled in the art make in accordance with the description and drawings of the invention are within the scope of the present invention.

LIST OF REFERENCE NUMBERS

1

mounting bearings

11

blocking disc

12

cavity

13

hollow cylinder pin

2

connecting element

21

engaging recess

211

first mating surface

212

second mating surface

22

Pivot hole

23

protruding edge

231

first blocking surface

232

oblique cut surface

24

previous step

25

elastic locking piece

26

triangular wedge

27

elastic dovetail catch

271

second blocking surface

272

third blocking surface

28

blocking disc

281

limiting cavity

282

pen

283

latching opening

284

elastic latch

285

fourth blocking surface

29

cover

291

C-shaped recess

292

catch projection

293

locking lug

294

arcuate support surface

295

opening

296

Area with concave and convex areas

3

upper cap

31

U-shaped cavity

32

arcuate support surface

33

latch hook

34

step

35

opening

36

Through opening

37

interface

38

non-slip rib

4A

Hook-shaped wiper arm

41A

curved hook

41B

Hook-shaped wiper arm

4C

curved hook

41C

U-shaped wiper arm

42C

latch hook

43C

engaging surface

4D

U-shaped wiper arm

41D

U-shaped cavity

42D

latch hook

43D

pressing surface

44D

engaging recess

4E

wiper

41E

U-shaped cavity

42E

opening

43E

Rest edge

4F

laterally insertable wiper arm with pin

41F

U-shaped cavity

43F

latch hook

5

cylinder

Claims (7)

Windscreen wiper connecting device for connecting a wiper blade to a wiper arm, characterized in that the connecting device is a mounting bearing ( 1 ) and a connecting element ( 2 ), wherein the mounting bearing ( 1 ) is fixedly mounted in the middle of the wiper blade, wherein at the mounting bearing ( 1 ) two blocking discs ( 11 ) are formed, between which a cavity ( 12 ) is formed, wherein at the top of the two blocking discs ( 11 ) a hollow cylinder pin ( 13 ) is arranged, wherein the connecting element ( 2 ) on the mounting bracket ( 1 ) is arranged, wherein the connecting element ( 2 ) is formed as a downwardly open hollow body and a downwardly open latching recess ( 21 ), wherein at the front and the rear side of the latching recess ( 21 ) a first and a second mating surface ( 211 . 212 ) are formed, wherein in the middle part of the connecting element ( 2 ) two pivot holes ( 22 ) are provided, with which the cylinder pin ( 13 ) of the mounting camp ( 1 ), starting from the bottom, a projecting edge ( 23 ) extends to both sides, wherein at the front end of the projecting edge ( 23 ) a first blocking surface ( 231 ) and at the rear end of the same an oblique cut surface ( 232 ) is formed, wherein at the top of the connecting element ( 2 ) two protruding steps ( 24 ), an elastic locking piece ( 25 ) and a wedge ( 26 ) are arranged, and from the rear end of the connecting element ( 2 ) starting from an elastic dovetail locking lug ( 27 ) extending laterally a second and a third vertically extending blocking surface ( 271 . 272 ) trains. Connecting device according to claim 1, characterized in that at the front end of the connecting element ( 2 ) two blocking discs ( 28 protruding, which form a head part, wherein between the two blocking discs ( 28 ) a boundary cavity ( 281 ) forms at the front end of a pen ( 282 ) is arranged, by means of which a cover ( 29 ) is rotatably mounted. Connecting device according to claim 2, characterized in that on the side walls of the two blocking discs ( 28 ) symmetrical detent openings ( 283 ) are provided, each with elastic latches ( 284 ), wherein at the rear end of the two blocking discs ( 28 ) each have a fourth blocking surface ( 285 ) is trained. Connecting device according to claim 2, characterized in that the cover ( 29 ) rotatable on the pin ( 282 ) in the boundary cavity ( 281 ) is mounted, wherein at the front end of the cover ( 29 ) a C-shaped recess ( 291 ) arranged with the pin ( 282 ), whereby in the middle part of the cover ( 29 ) two locking projections ( 292 ) are provided with barbs, wherein on the cover ( 29 ) Furthermore, a detent ( 293 ) is provided, which projects downwards, wherein a side surface of the latching lug ( 293 ) as an arcuate support surface ( 294 ) is carried out, wherein at the distal end of the cover ( 29 ) an opening ( 295 ) is formed, whose inner surface is designed as a surface with concave and convex points ( 296 ) is executed. Connecting device according to claim 1, characterized in that the connecting element ( 2 ) also with an upper cap ( 3 ) having a downwardly open U-shaped cavity ( 31 ), which is manufactured in such a size that the upper cap ( 3 ) the connecting element ( 2 ), wherein at the front end of the U-shaped cavity ( 31 ) an arcuate support surface ( 32 ) is formed, wherein on both side walls of the U-shaped cavity ( 31 ) symmetrical latching hooks ( 33 ) are provided, wherein near the rear end of the U-shaped cavity ( 31 ) a step ( 34 protruding at the top of the upper cap ( 3 ) an opening ( 35 ) is provided, wherein on the side walls of the upper cap ( 3 ) Passage openings ( 36 ) according to the pivot bearing holes ( 22 ) of the connecting element ( 2 ) are arranged, wherein on one side of the passage opening ( 36 ) a connection surface ( 37 ) is trained. Connecting device according to claim 5, characterized in that on the connecting surface ( 37 ) a variety of slip-resistant ribs ( 38 ) is arranged. Connecting device according to claim 1, characterized in that the mounting bearing ( 1 ) and the connecting element ( 2 ) can be integrally formed.

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