Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
  • B60S1/00—Cleaning of vehicles
  • B60S1/02—Cleaning windscreens, windows or optical devices
  • B60S1/04—Wipers or the like, e.g. scrapers
  • B60S1/32—Wipers or the like, e.g. scrapers characterised by constructional features of wiper blade arms or blades
  • B60S1/34—Wiper arms; Mountings therefor
  • B60S1/3425—Constructional aspects of the arm
  • B60S1/3436—Mounting heads
  • B60S1/344—Flat-type mounting heads
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
  • B60S1/00—Cleaning of vehicles
  • B60S1/02—Cleaning windscreens, windows or optical devices
  • B60S1/04—Wipers or the like, e.g. scrapers
  • B60S1/32—Wipers or the like, e.g. scrapers characterised by constructional features of wiper blade arms or blades
  • B60S1/34—Wiper arms; Mountings therefor
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
  • B60S1/00—Cleaning of vehicles
  • B60S1/02—Cleaning windscreens, windows or optical devices
  • B60S1/04—Wipers or the like, e.g. scrapers
  • B60S1/32—Wipers or the like, e.g. scrapers characterised by constructional features of wiper blade arms or blades
  • B60S1/34—Wiper arms; Mountings therefor
  • B60S1/3463—Means to press blade onto screen
  • B60S1/3475—Means to press blade onto screen with blade or leaf springs

Definitions

• the invention relates to a device for folding and folding a wiper arm of a window wiper device onto a window of a motor vehicle, the device having at least two spring elements which hold the wiper arm in a stable position which is folded away from the vehicle window, and which hold the wiper arm against the vehicle window in wiping mode to press.
• a first design has two spring elements arranged side by side. The one end of the two spring elements is arranged in a V-shape on a common one-piece connecting element. A part of a two-part connecting element is attached to the other end of one of the spring elements.
• the V-shaped spring elements are pressed against one another, and the two parts of the two-part connecting element are fastened to one another by a fastening means, for example by a rivet.
• a second design three spring elements are arranged side by side. Either the middle spring element is longer than the two outer spring elements or the two outer spring elements are longer than the middle spring element.
• the three spring elements each have a common connecting element at their two ends, one connecting element being connected in one piece to the spring elements, and the second connecting element having to be fastened to the spring elements in an extra assembly step.
• the longer spring element When attaching the longer spring element to the connecting element, the longer spring element must be bent.
• This curved spring element also results in a pivoting moment, so that a wiper arm equipped with this device can be folded away from the pane or folded towards the pane.
• This second design known from the prior art also has the disadvantage that it causes a relatively high outlay on assembly, a relatively high level of tool wear and material waste.
• the object of the invention is to improve a device of the type mentioned at the outset in such a way that assembly will be simplified in the future and tool versatility and material waste will be reduced.
• the invention achieves the stated object by a device of the type mentioned in the introduction, in which at least one of the at least two spring elements has a pinched area.
• the device can be punched out as a single part from a sheet metal, the spring elements being firmly connected at both ends to the connecting elements connecting the spring elements.
• the spring elements no longer have to be attached to the connecting element at one of their ends by the previously required E_extra assembly step.
• at least one of the at least two spring elements is squeezed in a selected area. The degree of squeezing determines the amount of the desired pivoting moment or the desired contact pressure of the wiper arm against the vehicle window.
• the pinched areas are expediently located at the end of the spring elements, since higher stresses occur due to the bending load in the middle of the spring elements. Since the device will be punched out of the sheet metal as a single part in the future and the spring elements will no longer protrude in a V-shape, less material waste will occur in the future. As a result, material waste and tool wear are significantly reduced.
• the device has two spring elements arranged next to one another, each of which is connected to one another at its end regions by means of connecting elements, at least one end region of the device and in each case a partial region of the connecting elements being crimped.
• the pinch in at least one end region of the spring elements and in a partial region of the connecting elements generates a force which tends to spread the two spring elements.
• the spring elements are firmly connected to the connecting elements at their two ends, a torsional force, which in turn generates a pivoting moment. It is thus possible to pivot a wiper arm equipped with the device into a stable position which is folded away from the vehicle window.
• the wiper arm When the wiper arm is pivoted away from the folded-away position towards the window, it is pivoted over a critical point at which the pivoting moment is reversed in the opposite direction of action. Then the wiper arm equipped with the device according to the invention is pressed against the window, whereby an optimal wiping performance is achieved.
• the wiper arm has three spring elements arranged next to one another, a middle spring element being provided with at least one squeezed end region.
• the wiper arm it is also possible for the wiper arm to have three spring elements arranged next to one another, two spring elements arranged on the outside being provided with at least one crimped end region. It is therefore also possible that the spring element having the crimped end region also has a second crimped end region in order to increase the pivoting moment or the pressing force of the wiper arm on the vehicle window.
• the device can be punched out of a sheet metal part, the spring elements being firmly connected to the connecting elements in their end regions.
• the squeezing process extends the spring elements in question, so that the squeezed or squeezed spring elements give the device the required pivoting moment in order to be able to fold the wiper arm provided with the device away from the window or to fold it onto the vehicle window.
• the squeezed or squeezed spring elements give the device the required pivoting moment in order to be able to fold the wiper arm provided with the device away from the window or to fold it onto the vehicle window.
• the device can expediently be produced from a sheet with a constant cross section.
• the device can thus be punched out of a sheet metal strip wound on a coil in a continuous production process. Consequently, it is advantageous to manufacture the device according to the invention in an automated manufacturing process in which the squeezed areas are produced after a pre-punching process or after the punching-out process.
• the invention further relates to a wiper arm for a windshield wiper device of a motor vehicle, which has a device according to one of claims 1 to 6 according to the invention.
• the invention also relates to a windshield wiper device for a motor vehicle, which according to the invention has at least one wiper arm according to claim 7.
• Figure 1 is a perspective view of a first embodiment of the device.
• FIG. 2 shows a section of the device from FIG. 1 along the line AA; 3 shows a perspective view of a second embodiment of the device;
• FIG. 4 shows a detailed view of a squeezed area of the device from FIG. 3;
• FIG. 5 shows a perspective view of a third embodiment of the device
• FIG. 6 shows a squeezed area of the device from FIG. 5.
• the device 10 shows a device 10 of a wiper arm, not shown here, of a windshield wiper device of a motor vehicle.
• the device 10 has two spring elements 11, which are each connected to one another at connecting elements 12.
• the device 10 has a pinched area 13 in its two end areas, in each of which an end area of the spring elements 11 and a partial area of the connecting elements 12 are pinched (see also FIG. 2). Due to the crushing in the end region 13, a spreading force is exerted on the spring elements 11, which tends to spread the spring elements 11 apart in the end region 13. However, since the spring elements 11 are firmly connected to the connecting elements 12, the spring elements 11 cannot spread apart, so that they twist to avoid the spreading force.
• the torsional force acting in the spring elements 11 generates a pivoting moment in the device 10, as a result of which a wiper arm provided with the device 10 can be folded away from a vehicle window or can be pressed against the vehicle window for wiping operation.
• the figures 3 and 4 show a device 30 with two spring elements 31 and one spring element 32.
• the spring elements 31 and 32 are connected to one another at a connecting element 33 and 34.
• the spring element 32 has a pinched area 35 at its ends.
• the spring element 32 is extended by the pinched area 35. Since the elongated spring element 32 is fixedly connected at both ends to the connecting elements 33 and 34, the spring element 32 is bent by the extension, and thus "gives the device 30 a pivoting moment. This pivoting moment allows a wiper arm equipped with the device 30 folded down on a vehicle window or folded onto the vehicle window for wiping.
• the figures 5 and 6 show a third embodiment of a device 50.
• the device 50 has spring elements 51 and 52, which are each connected to connecting elements 53 and 54.
• the spring elements 51 have pinched areas 55 at their ends the spring elements 51 are extended so that they are deflected and also impart a pivoting moment to the device 50.
• a wiper arm equipped with the device 50 can thus be folded away from the window or folded onto the vehicle window for wiping operation.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Springs (AREA)
• Body Structure For Vehicles (AREA)
• Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
• Transmission Devices (AREA)
• Cleaning By Liquid Or Steam (AREA)

Priority Applications (6)

Applications Claiming Priority (2)

Publications (1)

Family

ID=34223484

Family Applications (1)

Country Status (8)

Families Citing this family (22)

Citations (5)

Family Cites Families (2)

• 2003
  • 2003-09-09 DE DE10341457A patent/DE10341457A1/de not_active Ceased
• 2004
  • 2004-06-02 JP JP2006522877A patent/JP4295321B2/ja not_active Expired - Fee Related
  • 2004-06-02 BR BRPI0414204-7A patent/BRPI0414204A/pt not_active IP Right Cessation
  • 2004-06-02 US US10/571,182 patent/US7788761B2/en not_active Expired - Fee Related
  • 2004-06-02 CN CN2004800259275A patent/CN1849235B/zh not_active Expired - Fee Related
  • 2004-06-02 EP EP04735726A patent/EP1663742B1/de not_active Expired - Lifetime
  • 2004-06-02 WO PCT/DE2004/001124 patent/WO2005025955A1/de not_active Ceased
  • 2004-06-02 KR KR1020067004832A patent/KR101081761B1/ko not_active Expired - Fee Related

Patent Citations (5)

Non-Patent Citations (1)

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