Source: https://patents.google.com/patent/DE10131580A1/en
Timestamp: 2020-02-24 09:11:03
Document Index: 667420165

Matched Legal Cases: ['art 12', 'art 18', 'art 12', 'art 18', 'art 12', 'art 12', 'art 12', 'art 18', 'art 12', 'art 12', 'art 12']

DE10131580A1 - Wiper arm, in particular for a windshield wiper device of a motor vehicle and method for producing a wiper arm - Google Patents
Wiper arm, in particular for a windshield wiper device of a motor vehicle and method for producing a wiper arm
DE10131580A1
DE10131580A1 DE2001131580 DE10131580A DE10131580A1 DE 10131580 A1 DE10131580 A1 DE 10131580A1 DE 2001131580 DE2001131580 DE 2001131580 DE 10131580 A DE10131580 A DE 10131580A DE 10131580 A1 DE10131580 A1 DE 10131580A1
DE2001131580
Frans Pennc
2001-07-02 Priority to DE2001131580 priority Critical patent/DE10131580A1/en
2003-01-16 Publication of DE10131580A1 publication Critical patent/DE10131580A1/en
B60S1/3438—Manufacturing details thereof
B60S1/345—Joints between elements the elements being a link piece and a mounting head
A wiper arm (10) is proposed, in particular for a windshield wiper device of a motor vehicle, with at least one joint part (12) with a base (30), of which at least one, preferably two, lateral flanks (32) are at an angle (A), in particular approximately perpendicular, with at least one lateral flank (32) having at least one latching cam (40), which extends approximately from the edge (38) of the lateral flank (32) facing away from the base and is formed in one piece with the lateral flank (32), the Locking cam (40) is concealed in the side profile. DOLLAR A Furthermore, a method for producing such a wiper arm (10) is shown.
The invention relates to a wiper arm and a method to produce one and one Windshield wiper device according to the genus of the independent Expectations.
There are already numerous wiper arms for motor vehicles, known for example from EP 1 095 830, which from a hinge part and a fastening part, which are rotatably connected to each other via a bolt. The maximum possible angle of rotation between the two parts is limited by locking cams and stop elements.
The hinge part is elongated, in cross section in Essentially U-shaped shape and therefore has a base and two lateral flanks arranged approximately orthogonally to the base on. From the edges of the lateral flanks facing away from the base Straps punched out and bent, which serve as locking cams Serve to limit the angle of rotation.
It is also known from the same publication Locking cams inside the U-shaped cross section as to form cylindrical pegs by suitable embossing be manufactured from the outside.
Because the locking cams out of the plane through the edges of the lateral flanks facing away from the base are formed, stand out there is an unfavorable flow pattern which the wind noise on the vehicle, especially at high Speeds, negatively affected.
The wiper arm according to the invention with the features of The main claim has the advantage that through the Side profile hidden arrangement of the locking cam the same in Side profile is not visible and disturbing swirling be avoided in the inflow area of the wiper arm. Thereby the air resistance and wind noise of the Wiper arms reduced. The locking cam is also included a one-piece lateral flank of the wiper arm additional fasteners can be dispensed with.
Through the measures listed in the subclaims there are advantageous further developments and improvements of the features specified in the main claim.
It when the locking cam in the Is essentially cuboid and on an outer edge of the Lateral flank is sharp-edged, so that the The outer edge runs undisturbed. Through the cuboid Training the locking cam can this over a wide Area on the lateral flank of the wiper arm, which results in a high strength of the connection.
It is particularly advantageous if the essentially cuboid locking cam approximately parallel to the base of the Wiper arms extends and from the base-facing edge of the Lateral flank is spaced so that the locking cam in Inside the U-shaped cross section is arranged.
If the wiper arm consists of at least one joint part from Essentially elongated shape, which at one end with a fastener is connected to a Pendular drivable wiper shaft is connectable This consists of a few parts easily and inexpensively manufacture.
It when the joint part with a Fastening part is rotatably connected and that Joint part, with at least one locking cam interacting stop element to limit the angle of rotation having. In this way, the angle of rotation between Fastening part and joint part are limited without Constructions are necessary that the flow in the Disrupt the area of the wiper arm.
If the locking cam is also compressed, this will be the case Material solidified in the area of the locking cam, in which one high strength is required. Through the upsetting the locking cam also positioned exactly, which Tolerances are minimized.
The windshield wiper device according to the invention with a Wiper arm according to one of claims 1 to 6 has the advantage that they are special due to hidden cams is flow-optimized and therefore also in vehicles higher speeds can be used.
The inventive method with the features of Claim 8 is particularly advantageous since after punching the contour of the joint part with locking cams made of sheet metal with the following bending and upsetting of the locking cams then sharp-edged shaping the edge of the Lateral flank a simple procedure is available with which wiper arms can be manufactured Latch cams are concealed.
It is particularly advantageous if the joint part is rotatably connected to the fastening part, wherein at least one limit of the angle of rotation between the joint part and fastening part is limited by the locking cams.
An embodiment of the invention is in the drawings shown and in the description below explained. Show it:
Fig. 1 a wiper arm according to the prior art in a perspective representation,
Fig. 2 shows the end of a hinge part according to the prior art in a perspective representation,
Fig. 3 shows the end of a joint part of a wiper arm according to the invention in a perspective view and
Fig. 4 shows a method according to the invention in a schematic representation.
In Fig. 1, an inventive wiper arm 10 is shown in perspective with its main elements. This essentially consists of an articulated part 12 of elongated shape, which has a first end 14 and a second end 16 . The first end 14 is rotatably connected to a fastening part 18 by a joint means 20 , for example a bolt. The second end 16 can be connected to a wiper blade, not shown. The second end 16 can also carry a wiper rod to which the wiper blade is attached. In this case, the joint part 12 carries the wiper blade indirectly.
Furthermore, the fastening part 18 has a fastening means 22 to which a traction means 26 is articulated via a C-bracket 24 and which is fastened at its other end to a tab 28 on the joint part 12 . As a result, the joint part can be rotated around the joint means 20 , the force required for this being determined by the properties of the traction means 26 .
Fig. 2 shows the first end 14 of a joint part 12 according to the prior art in a perspective view. The joint part 12 has a U-shaped cross section with a base 30 and two lateral flanks 32 . The base 30 is recessed in the rotation region 34 , as a result of which the two lateral flanks 32 protrude like a flap from the U-shaped cross section. The lateral flanks 32 have a bore 36 in which the bolt 20 is seated after assembly. The lateral flanks 32 each have a detent cam 40 on their edge 38 facing away from the base, which detents serve to limit the angle of rotation via stop elements which are arranged on the fastening part 18 .
When producing such a wiper arm, a sheet is first punched in one plane, which has the base 30 , the lateral flanks 32 and the locking cams 40 .
The sheet is then bent over a core, so that the two lateral flanks 32 form an angle A with the base 30 , which is typically approximately rectangular. The base 30 itself is bent like a hump.
The core is then removed and the locking cams 40 are bent inwards, that is to say into the interior of the U-shaped profile.
Fig. 3 shows the first end 14 of a joint part 12 of a wiper arm 10 of the invention in a perspective view. The two lateral flanks 32 are connected to one another by the hunched base 30 . The cuboid locking element 40 is arranged on the edge 38 of the lateral flank 32 facing away from the base. Of course, locking cams 32 can be disposed remote from the base 40 all along the edge 38 of the lateral flank. These can also have a different shape, for example that of a half cylinder. The surface of the latching element 40 , which faces away from the base 30 of the joint part 12 , is in one plane with the edge 38 of the lateral flank 32 facing away from the base. In this way, the locking cam 40 is hidden in the side profile.
The edge of the lateral flank 32 , which faces away from the base 30 and the locking cam 40, hereinafter referred to as the outer edge 42 of the lateral flank 32 , is completely undisturbed.
The locking cam 40 can of course also be shifted somewhat towards the base 30 , so that there is a distance B between the edge 38 and the surface of the locking cam 40 facing away from the base.
In FIG. 4, the essential steps of the method according to the invention are shown.
In a first step a, the contour of the joint part 12 with the lateral flanks 32 and the locking cams 40 is punched out of a flat stamped sheet.
Subsequently, in a second step b, the detent cam 40 is bent out of the plane of the stamping plate by approximately 90 °. This locking cam 40 then protrudes beyond the edge 38 of the lateral flank 32 facing away from the base.
In the third step c, the locking cams 40 are compressed in the direction of arrow 44 by a punch 48 which has the shape of the locking cams 40 . As a result, the stamping plate is solidified in the area of the locking cam 40 and the locking cam is displaced beyond the edge 38 . With a suitable stamp 48 , this can also take place to such an extent that the locking cam 40 is spaced apart from the edge 38 by the distance B. In this step, the locking cam 40 can also be punched or cut to size again.
In a last step d, the sheet with the finished locking cams is bent into a U-shape around a tool core 46 . In the region of the latching cam 40 of the mold core 46 has corresponding recesses so that the U-shaped hinge member after bending easily from the mold core 46 is removable.
1. Wiper arm ( 10 ), in particular for a windshield wiper device of a motor vehicle, with at least one joint part ( 12 ) and / or a fastening part ( 18 ) with a base ( 30 ) from which at least one, preferably two lateral flanks ( 32 ) are at an angle (A), in particular extending approximately vertically, at least one lateral flank ( 32 ) having at least one latching cam ( 40 ) which extends approximately from the edge ( 38 ) of the lateral flank ( 32 ) facing away from the base and is formed in one piece with the lateral flank ( 32 ) , characterized in that the locking cam ( 40 ) is concealed in the side profile.
2. Wiper arm ( 10 ) according to one of the preceding claims, characterized in that the in particular cuboid locking cam ( 40 ) on an outer edge ( 42 ) of the lateral flank ( 32 ) is formed with sharp edges, so that the outer edge ( 42 ) runs undisturbed.
3. wiper arm ( 10 ) according to claim 1, characterized in that the particularly cuboid locking cam ( 40 ) extends substantially parallel to the base ( 30 ) and / or perpendicular to the lateral flank ( 32 ) and from the base-facing edge ( 38 ) of the lateral flank ( 32 ) is spaced.
4. wiper arm ( 10 ) according to any one of the preceding claims, characterized in that the hinge part ( 12 ) is of substantially elongated shape, has two ends ( 14 , 16 ) and connected at the first end ( 14 ) with a fastening part ( 18 ) which can be connected to a wiper shaft which can be driven in a pendulum manner and can be connected at least indirectly at its second end ( 16 ) to a wiper blade.
5. wiper arm ( 10 ) according to any one of the preceding claims, characterized in that the joint part ( 12 ) with a fastening part ( 18 ) is rotatably connected which has at least one, with at least one locking cam ( 40 ) cooperating stop element for limiting the angle of rotation.
6. wiper arm ( 10 ) according to any one of the preceding claims, characterized in that the latching cam ( 40 ) is compressed.
7. Windscreen wiper device, characterized in that a wiper arm ( 10 ) according to one of claims 1 to 6 is provided.
8. A method for producing a wiper arm, in particular a wiper arm ( 10 ) according to one of claims 1 to 6, with a joint part ( 12 ) and / or a fastening part ( 18 ) which comprises at least one base ( 30 ), of which at least one, preferably two lateral flanks (32) in an, in particular a right angle (a), said at least one lateral flank (32) has at least one detent cam (40) extending from the remote from the base edge (38) of the lateral flank (32), with at least the following steps:
Punching the contour of a joint part ( 32 ) with locking cams ( 40 ) from a sheet metal,
- Bending the locking cams ( 40 ) by approximately 90 ° from the sheet metal plane,
- upsetting the locking cams ( 40 ),
- Sharp-edged shaping of the edge ( 42 ) and
- Bend the lateral flank ( 32 ) by the angle (A) so that an approximately U-shaped profile is created in cross section.
9. The method according to claim 8, characterized in that the joint part ( 12 ) is rotatably connected to a fastening part ( 18 ), at least one limit of the angle of rotation between the joint part ( 12 ) and fastening part ( 18 ) being limited by the latching cams ( 40 ).
DE2001131580 2001-07-02 2001-07-02 Wiper arm, in particular for a windshield wiper device of a motor vehicle and method for producing a wiper arm Ceased DE10131580A1 (en)
DE2001131580 DE10131580A1 (en) 2001-07-02 2001-07-02 Wiper arm, in particular for a windshield wiper device of a motor vehicle and method for producing a wiper arm
BR0205693A BR0205693B1 (en) 2001-07-02 2002-06-01 wiper arm and windscreen wiper device, especially for motor vehicles and the process to produce a wiper arm.
ES02745116T ES2299583T3 (en) 2001-07-02 2002-06-01 Windshield cleaning arm and windshield cleaning device in special for a motor vehicle, and procedure to produce a windshield cleaning arm.
EP20020745116 EP1404551B1 (en) 2001-07-02 2002-06-01 Wiper arm and windshield wiper device, particularly for a motor vehicle and method for producing a wiper arm
PCT/DE2002/002019 WO2003004323A1 (en) 2001-07-02 2002-06-01 Wiper arm and windshield wiper device, particularly for a motor vehicle and method for producing a wiper arm
JP2003510309A JP4431382B2 (en) 2001-07-02 2002-06-01 Wiper arm and windshield wiper device, especially for automobiles, and method for manufacturing wiper arm
DE2002511886 DE50211886D1 (en) 2001-07-02 2002-06-01 Wiper arm and disc wiper device, in particular for a motor vehicle and method for producing a wiper arm
US10/362,608 US7272890B2 (en) 2001-07-02 2002-06-01 Method for producing a wiper arm
KR1020037002034A KR100963607B1 (en) 2001-07-02 2002-06-01 Wiper arm and windshield wiper device, particularly for a motor vehicle and method for producing a wiper arm
DE10131580A1 true DE10131580A1 (en) 2003-01-16
ID=7690037
DE2001131580 Ceased DE10131580A1 (en) 2001-07-02 2001-07-02 Wiper arm, in particular for a windshield wiper device of a motor vehicle and method for producing a wiper arm
DE2002511886 Active DE50211886D1 (en) 2001-07-02 2002-06-01 Wiper arm and disc wiper device, in particular for a motor vehicle and method for producing a wiper arm
US (1) US7272890B2 (en)
EP (1) EP1404551B1 (en)
JP (1) JP4431382B2 (en)
KR (1) KR100963607B1 (en)
BR (1) BR0205693B1 (en)
DE (2) DE10131580A1 (en)
ES (1) ES2299583T3 (en)
WO (1) WO2003004323A1 (en)
US7996952B2 (en) * 2006-10-26 2011-08-16 Federal-Mogul World Wide, Inc. Wiper arm assembly having a locking catch
US7992249B2 (en) * 2006-10-30 2011-08-09 Federal-Mogul World Wide, Inc. Wiper arm assembly having locking arms
US7971313B2 (en) * 2006-10-30 2011-07-05 Federal-Mogul World Wide, Inc. Wiper arm assembly having a locking tab
KR101276575B1 (en) * 2012-12-28 2013-06-18 동양기전 주식회사 A wiper arm apparatus improving lock back structure
US2295620A (en) * 1941-05-07 1942-09-15 Zaiger Max Arm for windshield wipers
US2353208A (en) * 1942-07-04 1944-07-11 Stewart Warner Corp Windshield wiper
US3427676A (en) * 1968-01-12 1969-02-18 Trico Products Corp Windshield wiper arm
DE4136938A1 (en) * 1991-05-15 1992-11-19 Swf Auto Electric Gmbh Windscreen wiper on vehicle - has arm made of sheet metal stamped into U=section and fitted with hinge
FR2692215B1 (en) * 1992-06-16 1998-06-12 Valeo Systemes Dessuyage Wiper device has aesthetic connection between the casing and the drive head.
FR2693693B1 (en) * 1992-07-15 1994-08-19 Valeo Systemes Dessuyage Wiper arm.
DE19951440B4 (en) 1999-10-25 2015-04-02 Robert Bosch Gmbh Wiper arm for a vehicle
DE10008644A1 (en) * 2000-02-24 2001-09-13 Bosch Gmbh Robert wiper arm
DE10100020A1 (en) * 2001-01-03 2002-07-04 Bosch Gmbh Robert Wiper arms and method for manufacturing wiper arms
2001-07-02 DE DE2001131580 patent/DE10131580A1/en not_active Ceased
2002-06-01 US US10/362,608 patent/US7272890B2/en active Active
2002-06-01 JP JP2003510309A patent/JP4431382B2/en active Active
2002-06-01 EP EP20020745116 patent/EP1404551B1/en active Active
2002-06-01 KR KR1020037002034A patent/KR100963607B1/en active IP Right Grant
2002-06-01 WO PCT/DE2002/002019 patent/WO2003004323A1/en active IP Right Grant
2002-06-01 ES ES02745116T patent/ES2299583T3/en active Active
2002-06-01 BR BR0205693A patent/BR0205693B1/en active IP Right Grant
2002-06-01 DE DE2002511886 patent/DE50211886D1/en active Active
ES2299583T3 (en) 2008-06-01
KR100963607B1 (en) 2010-06-15
WO2003004323A1 (en) 2003-01-16
BR0205693B1 (en) 2011-06-14
DE50211886D1 (en) 2008-04-24
US20040025282A1 (en) 2004-02-12
EP1404551A1 (en) 2004-04-07
JP4431382B2 (en) 2010-03-10
EP1404551B1 (en) 2008-03-12
BR0205693A (en) 2003-07-15
KR20030031150A (en) 2003-04-18
US7272890B2 (en) 2007-09-25
JP2004532771A (en) 2004-10-28
US7891044B2 (en) 2011-02-22 Device for detachably linking a wiper blade with a driven wiper arm
AU2006352372B2 (en) 2013-03-21 Anchor for handling building elements, in particular a concrete panel
WO2002066300A3 (en) 2002-12-05 Wiper device especially for the panes of motor vehicles
JP2002505227A (en) 2002-02-19 The air bag module mounting mechanism and fabrication method thereof
US20030127906A1 (en) 2003-07-10 Wheel balance weight and process for manufacturing the same