Device for connecting a wiper blade to a wiper arm

• US 6,434,780 B1
• Filed: 06/16/2000
• Issued: 08/20/2002
• Est. Priority Date: 08/27/1998
• Status: Expired due to Fees

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Kotlarski, Thomas
• Primary Examiner(s): Graham, Gary K.
• Application Number:
  US09/530,195
• Time in Patent Office: 795 Days
• Field of Search: 152/503.2, 152/503.1, 152/503.61, 152/504.3, 152/504.4, 403/324, 403/325, 403/327
• US Class Current: 15/250.32
• CPC Class Codes: B60S 1/38 Wiper blades provided with liquid spreading means B60S1/524; provided with gas spreading means B60S1/546
• CPC Class Codes: B60S 1/3868 pin formed on the exterior of side walls
• CPC Class Codes: B60S 1/40 Connections between blades and arms
• CPC Class Codes: B60S 1/4064 the channel-shaped end being provided with protrusions on, or holes in, the side walls to create a pivot

Abstract

A device serves as a wiper blade for motor vehicle windows to a wiper arm, which is guided on the wiper blade, is movable between turning point positions, and is provided with a device element (24), with whose device element (24). The elongated wiper blade (10), which can be pressed again the window with a wiper strip (22), is pivotably connected via a connection piece (20) belonging to the wiper blade, wherein one pivot peg (58 and 146, respectively) disposed on the connection piece protrudes from each long side of the wiper blade, the common longitudinal axis of the two pivot pegs is located transversely to the length of the wiper blade in a plane spaced apart from the window, and each of the pivot pegs engages a gearing recess, associated with it, of the connecting element, which gearing recess forms the pivoting means of the wiper arm, it is proposed that at least one pivot peg (58 and 146, respectively) is movable at least in some portions by at least its peg length toward the other pivot peg counter to spring force and can be introduced into the gearing recess (48 and 138, respectively) associated with it.

Claims

1. A device for connecting an elongated wiper blade for motor vehicle windows to a wiper arm guided on the wiper blade, is movable between turning point positions, and is provided with a device element, with whose device element (24) the elongated wiper blade (10) pressable against the window with a wiper strip (22), is pivotably connected via a connection piece (20) belonging to the wiper blade, wherein one pivot peg (58, 146) disposed on the connection piece protrudes from each long side of the wiper blade, a common longitudinal axis of the two pivot pegs is located transversely to a length of the wiper blade in a plane spaced apart from the window, and each of the pivot pegs engages a gearing recess, associated with it, of the device element, which gearing recess forms pivoting means of the wiper arm, characterized in that at least one pivot peg is movable at least in some portions by at least its peg length toward the other pivot peg counter to spring force and can be introduced into the gearing recess (48, 138) associated with it.

2. The device of claim 1, that the at least one pivot peg (58) is longitudinally divided;

that one peg part (60) of the at least one pivot peg is solidly joined to the connection piece (20);

that the other peg part (62) of the at least one pivot peg is movable counter to spring force by at least an amount of an effective peg length (94) toward the other pivot peg; and

that the pivot peg part (60) solidly joined to the connection piece can be introduced, via a mounting channel (84) that is open and discharges into the gearing recess (48) associated with this pivot peg part, and a width (86) of the mounting channel is adapted to a width (90) of that pivot peg part (60).

3. The device of claim 2, characterized in that when the wiper arm (16) is in an operating position, a dividing seam (82) existing between the first pivot peg part (60) and the second pivot peg part (62) is disposed upright toward the window.

4. The device of one of claim 2, characterized in that a dividing seam (82) is disposed between the peg parts and lies outside a longitudinal axis (88) of the pivot peg;

that the pivot peg part (60) having a larger cross section is solidlyjoined to the connection piece (20), and the pivot peg part (62) having a smaller cross section is disposed in at least approximately resiliently yielding fashion in a direction of the longitudinal axes (88) of the pegs.

5. The device of claim 4, characterized in that the connection piece (20) is made from a spring-elastic plastic;

and that spring means (66, 68) are disposed on an end (64), which when the wiper blade is connected to the wiper arm is remote from the wiper arm (16), of a base part that belongs to the connection piece (20) and has the pivot peg parts (60) having the larger cross section.

6. The device of claim 5, characterized in that the spring means for each of the smaller pivot peg parts (62) are formed each by one hairpin shaped extension (60, 68) of the connection piece (20);

that two extensions (60, 68) are located in a common plane spaced apart from and approximately parallel to the window;

that inner hairpin legs (74, 76), adjacent to one another, of the two extensions (60, 68) are joined solidly, by their ends remote from respective apex region (80) of the hairpin, to an end of the base part of the connection piece; and

that the pivot peg parts (62) having the smaller cross section are each disposed on one of two outer legs (72, 78) of the hairpin of the two extensions, which legs are freely movable counter to spring force.

7. The device of claim 2, characterized in that the device element (24) of the wiper (16) has a U-shaped cross section, a base (32) of which U, when the wiper blade has been connected, is located on a side of the connection piece (20) remote from the window;

that two legs (34, 36) of the device element (24) fit tightly over two long sides of the connection piece (20) of the wiper blade; and

that each leg of the U has one gearing recess (48) for one pivot peg (58).

8. The device of claim 7, characterized in that a mounting channel (84) of each gearing recess (48) is open toward the window.

9. The device of claim 8, characterized in that when the wiper blade (10) has been connected, walls of the gearing recess that are each remote from the wiper arm (16) fit in hook fashion under the pivot pegs (58).

10. The device of claim 7, characterized in that the base of the U of the device element (24) is provided with a widened portion (38) of L-shaped cross section, one leg (40) of which L is formed by a continuation of the base (32) of the U, while the other leg (42) of the L is disposed spaced apart from and parallel to the first leg (34) of the U of the device element (24).