Source: https://patents.google.com/patent/DE10227781B4/en
Timestamp: 2020-08-15 18:22:23
Document Index: 178569450

Matched Legal Cases: ['art 54', 'art 55', 'art 55', 'art 54', 'art 55', 'art 64', 'art 66']

DE10227781B4 - Windshield wiper device - Google Patents
DE10227781B4
DE10227781B4 DE10227781A DE10227781A DE10227781B4 DE 10227781 B4 DE10227781 B4 DE 10227781B4 DE 10227781 A DE10227781 A DE 10227781A DE 10227781 A DE10227781 A DE 10227781A DE 10227781 B4 DE10227781 B4 DE 10227781B4
DE10227781A
DE10227781A1 (en
2002-06-21 Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
2002-06-21 Priority to DE10227781A priority Critical patent/DE10227781B4/en
2004-01-08 Publication of DE10227781A1 publication Critical patent/DE10227781A1/en
2013-11-28 Publication of DE10227781B4 publication Critical patent/DE10227781B4/en
B60S1/344—Flat-type mounting heads
Windscreen wiper device, in particular for a motor vehicle, having a wiper arm (10, 30) drivable by a drive, which can be folded onto a pulley and folded away from a pulley and on which a wiper blade can be arranged, wherein the wiper arm (10, 30) forms a drive facing portion (11) and a wiper blade facing region (12), wherein the drive facing portion (11) and the wiper blade facing portion (12) of the wiper arm (10, 30) with two torsion spring elements (13, 14, 21 , 22, 41, 42, 51, 52, 61, 62, 71, 72), wherein the torsion spring elements (13, 14, 21, 22, 41, 42, 51, 52, 61, 62, 71, 72) are provided with mutually opposed torsion angles and the Torsionsfederelemente (13, 14, 21, 22, 41, 42, 51, 52, 61, 62, 71, 72) have a rectangular cross-section whose width is greater than its thickness, so that the Torsion spring elements (13, 14, 21, 22, 41, 42, 51, 52, 61, 62, 71, 72) in the longitudinal direction to the disc out gek curved or curved away from the disc, wherein the two torsion spring elements (13, 14, 21, 22, 41, 42, 51, 52, 61, 62, 71, 72) at their end regions in each case by a connecting element (23, 43, 44, 53, 54, 55, 63, 64, 66, 73, 74) are interconnected so that the torsion spring elements (13, 14, 21, 22, 41, 42, 51, 52, 61, 62, 71, 72 ) and the connecting elements (23, 43, 44, 53, 54, 55, 63, 64, 66, 73, 74) form a single spring element (20, 40, 50, 60, 70), characterized in that the drive facing region (11) and the wiper blade facing region (12) of the wiper arm (10, 30) each having an opening for receiving the spring element (20, 40, 50, 60, 70).
The invention relates to a windshield wiper device, in particular for a motor vehicle, according to the preamble of claim 1.
Previously known windscreen wiper devices have a wiper arm which can be folded away from the window by means of a joint and can be folded onto the window. So that the wiper arm is pressed as firmly as possible against the disc in the folded state on the disc and thus the wiper arm remains stable in the folded away position of the disc in this folded-away position, the previously known wiper arms on a tension spring. A disadvantage of these conventional wiper arms is that they require a certain installation effort, which thus increases the cost of the windscreen wiper device. In addition, the wiper arms of the previously known windscreen wiper devices have a relatively large distance to the windshield in the folded-over state on the windscreen, which is why the wiper arms can be sunk invisible badly in the switched-off state of the windscreen wiper device.
The EP 0 299 708 A2 describes a wiper arm for a windshield wiper device having a portion which is foldable between two stable positions. The section is formed by two legs, between which an opening is arranged. The two legs are twisted in opposite directions.
The DE 100 52 616 A1 describes a wiper arm for a wiper device having a leaf spring-like formed portion which is formed by two legs which are biased against each other. The leaf-spring-like section allows a folding between two stable layers of the wiper arm.
The invention has the object to improve a windshield wiper device of the type mentioned in that the number of components required for the wiper arm is reduced.
The invention achieves the stated object in a generic windshield wiper device with the characterizing features of claim 1.
Thus, in the future, the number of components required for the wiper arm is reduced to a minimum. The wiper arm thus has in the future only the area facing the drive and the area facing the wiper blade and the two torsion spring elements. The hitherto required hinge for folding away the wiper arm of the disc or for folding the wiper arm to the disc can thus account for the same as the previously required tension spring. A wear of the wiper arm by frequently over time folding back and forth of the wiper arm to the disc and away from the disc is excluded in the future, since the joint friction is eliminated. The assembly work of the wiper arm is thus reduced to a very few assembly steps, which can be automated very inexpensively with the simplest means. Furthermore, the wiper arm of the windshield wiper device according to the invention can be designed as a relatively flat structural unit, so that it can also be concealed, for example, in the A-pillar of a vehicle, whereby the overall aesthetic impression of the vehicle is upgraded.
When the two torsion spring elements are spaced from each other, the wiper blade is optimally pressed against the disc in the folded state on the disc, and in the folded state of the disc, the wiper arm is held away from the disc with a maximum holding force.
The two torsion spring elements can be connected to each other at their end regions by a connecting element, so that the Torsionsfederelemente and the connecting elements form a single spring element, whereby the number of required components of the wiper arm and thus the assembly steps for its production are further reduced.
A connecting element of the single spring element may be in one piece and the other connecting element in two parts. In this case, the two torsion spring elements can be arranged with its one end in a V-shaped manner on the one-part connecting element and in each case a part of the two-part connecting element can be attached to the other end of one of the torsion spring elements. In this structural design of the torsion spring elements and the connecting elements, it is not necessary that the torsion spring elements which generate the contact force of the wiper arm in the folded state of the wiper arm and stabilize the folded-away position of the wiper arm in the folded-away state of the wiper arm, twisted in an extra manufacturing step Need to become. The torsion of the torsion spring elements is achieved in this structural embodiment by pressing against each other of the V-shaped apart torsion spring elements, since the width of the Torsionsfederelemente is greater than the thickness thereof. The torsion spring elements naturally tend to bend in the direction of least resistance moment. The smallest moment of resistance, the torsion spring elements have over their thickness, so that they, when pressed against each other across their thickness, to bend their thickness center line, which corresponds to a bending line in the longitudinal direction of the torsion spring elements.
If the two-part connecting element has fastening means, the ends of the V-shaped apart torsion spring elements can be held together without much effort after they have been pressed against each other.
If a connecting element is provided with a crank in its central region, the generation of the offset makes it possible to manufacture the opposite torsion angles from a manufacturing point of view very easily.
It is also very cost-effective if the torsion spring elements and / or the spring element are produced as a stamped part or alternatively as a fiber-reinforced plastic part.
The connecting elements of the spring element may be in one piece, and the spring element may be designed as a longitudinally bent component with torsion spring elements twisted about its longitudinal axis (US Pat. 41 . 42 ). A spring element with these features can be produced, for example, in a punch press as a stamped and bent part in one work step.
If the region facing the drive and the wiper blade facing region of the wiper arm in each case has an opening for receiving the spring element, or these areas are each provided with two openings for receiving the two Torsionsfederelemente, the entire wiper arm by simply mating the spring element with the Drive facing region and the wiper blade facing area or by simply mating the Torsionsfederelemente with the drive area facing and the wiper blade facing area are mounted quickly.
In order to prevent the spring element or the torsion spring elements from slipping out of the receiving openings of the area facing the drive and the area facing the wiper blade, the spring element or the torsion spring elements in the openings for receiving the spring element or the Torsionsfederelemente in the area facing the drive and / or clipped into the wiper blade facing area.
Below, various embodiments are explained in detail with reference to the accompanying drawings.
1A a perspective view of a folded away from the disc wiper arm;
1B a perspective view of the wiper arm 1A in the folded state to the disc;
1C a perspective sectional view through the wiper arm 1A ;
2A a plan view of a punched spring element;
2 B a front view of the spring element 2A ;
2C a plan view of the spring element 2 A with mutually pressed torsion spring elements;
2D a front view of the spring element 2C ;
3A a cross section through the torsion spring elements of the spring element 2C in the folded state to the disc;
3B a longitudinal section through the spring element 2C in the folded state to the disc;
3C a cross section through the torsion spring elements 2C in the folded away from the disc state;
3D a longitudinal section through the spring element 2C in the folded away from the disc state;
4A a perspective view of a second embodiment of a spring element;
4B a perspective view of the provided with a longitudinal deflection spring element 4A ;
4C a perspective sectional view through the in 4B illustrated spring element;
5A a perspective view of a third embodiment of a spring element;
5B a perspective view of the provided with a longitudinal deflection spring element 5A ;
6A a plan view of a fourth embodiment of a spring element;
6B a perspective view of the longitudinally curved spring element 6A ;
7A a plan view of a fifth embodiment of a spring element;
7B a perspective view of the longitudinally curved spring element 7A ,
1A shows a wiper arm 10 in the folded away from the disc state, the disc is not shown here in detail. The wiper arm 10 has a likewise not shown here drive facing area 11 and a region also not shown here wiper blade facing 12 on. Between the areas 11 and 12 There are two spaced Torsionsfederelemente 13 , The torsion spring elements 13 have mutually opposite torsion angle, so that the Torsionsfederelemente 13 are twisted about their longitudinal axis (see 1C ). By the two opposite torsion angle of the torsion spring elements 13 experience the torsion spring elements 13 a bending moment in its longitudinal direction, so that the wiper arm 10 in the 1A or in 1B shown longitudinal bend receives. If you fold the wiper arm that has been folded away from the window 10 (please refer 1A ) against the disc (see 1B ), the mutually opposite torsion angle of the torsion spring elements 13 and 14 interchanged, that is, the torsion spring element 13 has in the folded away from the disc state the same torsion angle as the torsion spring element 14 in the folded state on the disc and vice versa (see 3A and 3C ). The torsion spring elements 13 and 14 are in the areas 11 and 12 plugged in. For this purpose, the areas indicate 11 and 12 openings 15 . 16 . 17 and 18 on (see 1B and 1C ). By not shown here clip connections, the torsion spring elements 13 and 14 on slipping out of the fields 11 and 12 be prevented.
2A shows a spring element 20 with torsion spring elements 21 and 22 passing through a connecting element 23 connected to each other. Be the torsion spring elements 21 and 22 pressed against each other by a force F (see 2C ), the torsion spring elements twist (see 2D . 3A and 3C ). The torsion of the torsion spring elements 21 and 22 results from the fact that the torsion spring elements 21 and 22 have a rectangular cross section ( 3A ) whose width is greater than its thickness. Thus, the torsion spring elements have a smaller moment of resistance in the thickness direction than in the direction of their width, so that the force F is the torsion spring elements 21 and 22 from its non-twisted position, which becomes unstable when the force F is attacked, deformed into the twisted position. Due to the torsional deformation of the torsion spring elements 21 and 22 experience the torsion spring elements 21 and 22 by a perpendicular to the Torsionsfederelemente 21 and 22 acting force component F B bending in the longitudinal direction ( 3B . 3D ). If the wiper arm folded onto the window ( 3B ) folded away from the disc ( 3D ), so the torsion angle of the torsion spring elements 21 and 22 interchanged (see 3A and 3C ), so that the perpendicular to the torsion spring elements 21 and 22 acting force component F B now the wiper arm 30 bends upward in its longitudinal direction and this can remain stable in the folded away from the disc position. The larger the force component F B , the stronger the wiper arm becomes 30 pressed against the disc, whereby the wiping performance of the windshield wiper device is increased. The greater the force component F B , the more stable the wiper arm remains 30 in its folded away from the disc position.
4A shows a spring element 40 with two torsion spring elements 41 and 42 attached to their end areas by fasteners 43 and 44 connected to each other. The spring element 40 can be made very easily as a stamped and bent part. In the manufacturing process, the torsion spring elements 41 and 42 after punching out the spring element 40 twisted about opposite to each other torsion angle about its longitudinal axis ( 4C ) and the spring element 40 bent along its length ( 4B ).
5A shows a spring element 50 with torsion spring elements 51 and 52 , The torsion spring elements 51 and 52 are at their one end portion V-shaped by a connecting element 53 connected with each other. The torsion spring element 51 is at its other end with a fastener part 54 and the torsion spring element 52 is at its other end a connector part 55 connected. The connecting element part 55 has hook elements 56 , so that after the pressing together of the Torsionsfederelemente 51 and 52 the connector element part 54 in the connecting element part 55 can be hung, which by the pressing together of the Torsionsfederelemente 51 and 52 resulting torsion of the torsion spring elements 51 and 52 and the resulting longitudinal bending of the spring element 50 is preserved (see 5B ).
6A shows a spring element 60 with torsion spring elements 61 and 62 , which at its one end region is V-shaped with a connecting element 63 are connected. The torsion spring element 61 has at its other end a connector element part 64 on, with a hole 65 is provided. The torsion spring element 62 has at its other end a connecting element part 66 on, with a hole 67 connected is. By pushing the torsion spring elements against each other 61 and 62 can the holes 65 and 67 be brought to cover, so that a connecting means 68 , For example, a rivet, a screw or other fasteners known in the art through the overlapping holes 65 and 67 can be inserted through it. In this way, by the pressing together of the Torsionsfederelemente 61 and 62 generated torsion of the torsion spring elements 61 and 62 and the resulting longitudinal bending of the spring element 60 maintain (see 6B ).
7A shows a spring element 70 with two torsion spring elements 71 and 72 passing through fasteners 73 and 74 connected to each other. The connecting element 74 is used in the manufacture of the spring element 70 in its middle area with a bend 75 ( 7B ), whereby the V-shaped on the connecting element 73 arranged torsion spring element 71 and 72 pressed against each other, so that the Torsionsfederelemente 71 and 72 experience a twist and the spring element 70 is bent in its longitudinal direction ( 7B ). Because the spring element 70 can be inexpensively manufactured as a stamped part, it makes sense to the offset 75 also produce in the punch, whereby the production of the spring element 70 considerably simplified.
Windscreen wiper device, in particular for a motor vehicle, having a wiper arm which can be driven by a drive ( 10 . 30 ), which is hinged to a disc and can be folded away from a disc and to which a wiper blade can be arranged, wherein the wiper arm ( 10 . 30 ) a drive-facing area ( 11 ) and a wiper blade facing area ( 12 ), wherein the area facing the drive ( 11 ) and the wiper blade facing area ( 12 ) of the wiper arm ( 10 . 30 ) with two torsion spring elements ( 13 . 14 . 21 . 22 . 41 . 42 . 51 . 52 . 61 . 62 . 71 . 72 ), wherein the Torsionsfederelemente ( 13 . 14 . 21 . 22 . 41 . 42 . 51 . 52 . 61 . 62 . 71 . 72 ) are provided with mutually opposite Torsionswinkeln and the Torsionsfederelemente ( 13 . 14 . 21 . 22 . 41 . 42 . 51 . 52 . 61 . 62 . 71 . 72 ) have a rectangular cross-section whose width is greater than its thickness, so that the Torsionsfederelemente ( 13 . 14 . 21 . 22 . 41 . 42 . 51 . 52 . 61 . 62 . 71 . 72 ) are curved in the longitudinal direction towards the disk or curved away from the disk, wherein the two torsion spring elements ( 13 . 14 . 21 . 22 . 41 . 42 . 51 . 52 . 61 . 62 . 71 . 72 ) at their end regions in each case by a connecting element ( 23 . 43 . 44 . 53 . 54 . 55 . 63 . 64 . 66 . 73 . 74 ) are interconnected so that the torsion spring elements ( 13 . 14 . 21 . 22 . 41 . 42 . 51 . 52 . 61 . 62 . 71 . 72 ) and the connecting elements ( 23 . 43 . 44 . 53 . 54 . 55 . 63 . 64 . 66 . 73 . 74 ) a single spring element ( 20 . 40 . 50 . 60 . 70 ), characterized in that the area facing the drive ( 11 ) and the wiper blade facing area ( 12 ) of the wiper arm ( 10 . 30 ) each have an opening for receiving the spring element ( 20 . 40 . 50 . 60 . 70 ) having.
Windscreen wiper device according to claim 1, characterized in that the two torsion spring elements ( 13 . 14 . 21 . 22 . 41 . 42 . 51 . 52 . 61 . 62 . 71 . 72 ) are spaced from each other.
Windscreen wiper device according to claim 1 or 2, characterized in that a connecting element ( 53 . 63 ) in one piece and the other connecting element ( 54 . 55 . 64 . 66 ) is in two parts and the two torsion spring elements ( 51 . 52 . 61 . 62 ) with its one end V-shaped on the one-piece connecting element ( 53 . 63 ) are arranged and in each case a part of the two-part connecting element ( 54 . 55 . 64 . 66 ) at the other end of the torsion spring elements ( 51 . 52 . 61 . 62 ) is attached.
Windscreen wiper device according to claim 3, characterized in that the two-part connecting element ( 54 . 55 . 64 . 66 ) Fastening means ( 56 . 68 ), to the ends of the V-shaped apart torsion spring elements ( 51 . 52 . 61 . 62 ) after being pressed against each other.
Windscreen wiper device according to one of claims 1 to 4, characterized in that a connecting element ( 74 ) in its middle region with a bend ( 75 ) is provided.
Windscreen wiper device according to claim 1 or 2, characterized in that the connecting elements ( 43 . 44 ) of the spring element ( 40 ) are one-piece and the spring element ( 40 ) as a longitudinally bent component with twisted around its longitudinal axis Torsionsfederelementen ( 41 . 42 ) is made.
Windscreen wiper device according to one of claims 1 to 6, characterized in that the torsion spring elements ( 13 . 14 ) and / or the spring element ( 20 . 40 . 50 . 60 . 70 ) can be produced as a stamped part.
Windscreen wiper device according to one of claims 1 to 6, characterized in that the Torsion spring elements ( 13 . 14 ) and / or the spring element ( 20 . 40 . 50 . 60 . 70 ) are produced as a fiber reinforced plastic part.
Windscreen wiper device according to one of claims 1 to 8, characterized in that the spring element ( 20 . 40 . 50 . 60 . 70 ) or the torsion spring elements ( 13 . 14 ) in openings ( 15 . 16 . 17 . 18 ) for receiving the spring element ( 20 . 40 . 50 . 60 . 70 ) or the torsion spring elements ( 13 . 14 ) in the area facing the drive ( 11 ) and / or in the area facing the wiper blade ( 12 ) are clipped.
DE10227781A 2002-06-21 2002-06-21 Windshield wiper device Expired - Fee Related DE10227781B4 (en)
DE10227781A DE10227781B4 (en) 2002-06-21 2002-06-21 Windshield wiper device
ES03002359T ES2301719T3 (en) 2002-06-21 2003-02-04 Windshield cleaning device.
DE2003509667 DE50309667D1 (en) 2002-06-21 2003-02-04 Windshield wiper device
EP20030002359 EP1375273B1 (en) 2002-06-21 2003-02-04 Windscreen wiper device
US10/391,996 US6857160B2 (en) 2002-06-21 2003-03-19 Windshield wiper device
DE10227781A1 DE10227781A1 (en) 2004-01-08
DE10227781B4 true DE10227781B4 (en) 2013-11-28
ID=29716583
DE10227781A Expired - Fee Related DE10227781B4 (en) 2002-06-21 2002-06-21 Windshield wiper device
DE2003509667 Active DE50309667D1 (en) 2002-06-21 2003-02-04 Windshield wiper device
US (1) US6857160B2 (en)
EP (1) EP1375273B1 (en)
DE (2) DE10227781B4 (en)
ES (1) ES2301719T3 (en)
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2002-06-21 DE DE10227781A patent/DE10227781B4/en not_active Expired - Fee Related
2003-02-04 DE DE2003509667 patent/DE50309667D1/en active Active
2003-02-04 EP EP20030002359 patent/EP1375273B1/en not_active Expired - Fee Related
2003-02-04 ES ES03002359T patent/ES2301719T3/en active Active
2003-03-19 US US10/391,996 patent/US6857160B2/en not_active Expired - Fee Related
EP1375273A3 (en) 2005-08-10
US6857160B2 (en) 2005-02-22
DE50309667D1 (en) 2008-06-05
US20030233724A1 (en) 2003-12-25
DE10227781A1 (en) 2004-01-08
EP1375273A2 (en) 2004-01-02
EP1375273B1 (en) 2008-04-23
ES2301719T3 (en) 2008-07-01
KR100875218B1 (en) 2008-12-19 Clamps for holding tubular or hose shaped objects
JP2013047096A (en) 2013-03-07 Windscreen wiper device
US7055208B2 (en) 2006-06-06 Joint part for a windshield wiper
DE602004007326T2 (en) 2008-03-06 Spring-loaded connector for attaching two parts to each other
US7921504B1 (en) 2011-04-12 Frame coupling structure of windshield wiper
EP1403968A2 (en) 2004-03-31 Connection terminal
JP4131913B2 (en) 2008-08-13 Connecting member for wiper blade
DE10101778C1 (en) 2002-06-20 Carrier belt for bodywork seals has wedge-shaped cutouts in short and long form