Windshield wiper system having a wiper blade capable of retraction for hidden park
First Claim
1. A windshield wiper system comprising:
- a tubular wiper post;
a wiper arm having a first end mounted to said wiper post for oscillatory movement;
a wiper blade assembly;
a link pivotally attached to said wiper blade assembly and to said wiper arm for;
(a) pivotal movement relative to said wiper arm in a first direction, and(b) pivotal movement relative to said wiper arm in a second direction opposite to the first pivotal movement direction;
drive means for imparting oscillatory movement to said wiper arm, said drive means including;
(a) a wiper motor, and(b) a drive arm driven by said wiper motor and connected to an end of said wiper post remote from said wiper arm; and
means connecting said link and said drive means comprising;
(a) a fixed pin; and
(b) a cam element, pivotally mounted to said drive arm and having a recess which engages said pin and causes said cam element to pivot upon movement of said drive arm,for;
imparting relative pivotal movement between said link and said wiper arm in the first pivotal movement direction as said wiper arm passes through a predetermined position in oscillatory movement of said wiper arm in a first oscillatory movement direction, andimparting relative pivotal movement between said link and said wiper arm in the second pivotal movement direction opposite to the first pivotal movement direction as said wiper arm passes through said predetermined position in oscillatory movement of said wiper arm in a second oscillatory movement direction opposite to said first oscillatory movement direction.
1 Assignment
0 Petitions
Accused Products
Abstract
A windshield wiper system for automotive vehicles includes a mechanism for causing a wiper blade assembly to swing, relative to the wiper arm, between an extended position of the wiper blade assembly and a retracted position of the wiper blade assembly. More specifically, the mechanism causes a link, which is attached to the wiper blade assembly, to swing as the wiper arm moves into and out of the hidden park position. A first embodiment includes a "four-bar linkage" which transfers to oscillatory movement of a drive arm of a wiper system to pivotal movement of the link over a limited range of motion of the drive arm corresponding to movement of the wiper blade assembly into and out of the hidden park position. A second embodiment includes a cam element which selectively engages a fixed pin over a range of motion of the drive arm corresponding to movement of the wiper blade assembly into and out of the hidden park position.
18 Citations
9 Claims
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1. A windshield wiper system comprising:
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a tubular wiper post; a wiper arm having a first end mounted to said wiper post for oscillatory movement; a wiper blade assembly; a link pivotally attached to said wiper blade assembly and to said wiper arm for; (a) pivotal movement relative to said wiper arm in a first direction, and (b) pivotal movement relative to said wiper arm in a second direction opposite to the first pivotal movement direction; drive means for imparting oscillatory movement to said wiper arm, said drive means including; (a) a wiper motor, and (b) a drive arm driven by said wiper motor and connected to an end of said wiper post remote from said wiper arm; and means connecting said link and said drive means comprising; (a) a fixed pin; and (b) a cam element, pivotally mounted to said drive arm and having a recess which engages said pin and causes said cam element to pivot upon movement of said drive arm, for; imparting relative pivotal movement between said link and said wiper arm in the first pivotal movement direction as said wiper arm passes through a predetermined position in oscillatory movement of said wiper arm in a first oscillatory movement direction, and imparting relative pivotal movement between said link and said wiper arm in the second pivotal movement direction opposite to the first pivotal movement direction as said wiper arm passes through said predetermined position in oscillatory movement of said wiper arm in a second oscillatory movement direction opposite to said first oscillatory movement direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification