Automatic prop-up device of windshield wiper

Details Automatic prop-up device of windshield wiper Automatic prop-up device of windshield wiper

2002-06-03

2004-02-03

Graham, Gary K. (Department: 1744)

Brushing, scrubbing, and general cleaning

Attachments

Optical-member-attachable cleaner

C015S250001

Reexamination Certificate

active

06684448

ABSTRACT:

BACKGROUND OF THE INVENTION
(1) Field of the Invention
The present invention relates to an automatic prop-up device of windshield wiper, which includes correspondingly a roller device and a wedge device at where the supporting pole of vehicle windshield wiper located, the lower rim of vehicle windshield glass, or the air ventilation panel where the windshield glass adjoining the hood. When the windshield wiper swings to the near lowest position, it brings the roller device to make opposite movement against the wedge device, so when the roller device moves upwards along the wedge device to prop up the supporting pole of windshield wiper and its scrapping rubber strip as well to separate the scrapping rubber strip from the windshield glass and not tightly against each other in order to prolong the usage life of the crapping rubber strip of windshield wiper.
(2) Description of the Prior Art
Generally, ordinary windshield wiper of a vehicle is only turned on while encounters rain or snow. In other words, for the most of the time, the windshield wiper sits idly at the lower rim of the windshield glass, so, after under a long period of sunshine and high heat or freezing weather with low temperature, the rubber strip of windshield wiper often sticks onto the windshield glass due to high heat or freeze. Especially when the vehicle is parked outdoors, the dusts in the air tend to accumulate on the lower rim of the windshield glass, and once the windshield wiper is turned on, the rubber strip of the windshield wiper can be damaged due to the reasons stated before. Therefore, the industry has developed a prop-up device of vehicle windshield wiper
6
, as shown in FIG.
5
and
FIG. 6
, mainly comprising a fixed base
61
, a rotating base
62
that is hinged onto the fixed base and rotatable, and a top pole
63
that is hinged onto the rotating base
62
and rotatable, wherein a position trough
611
is formed on the fixed base
61
to allow a clamping piece
64
locked onto the supporting pole of windshield wiper
65
. Its characteristics may include: the top of the fixed base
61
is concave and forms a accommodation trough
612
to accommodate the rotating base
62
and inside the accommodation trough
612
further includes a tenon block
613
; on top of the rotating base
62
includes an opening
621
, so when the rotating base
62
is placed inside the accommodation trough
612
, the tenon block
613
is placed precisely inside the opening
621
; there are separate twist resilient elements S
1
, S
2
at where the rotating base
62
is hinged onto the fixed base
61
and the top pole
63
is hinged onto the rotating base
62
, so the rotating base
62
can be swung by external forces and back to folded state through the twist resilient elements S
1
, S
2
when the external forces disappear; in addition, on one end of the top pole
63
further includes a stopping block
631
and the top pole
63
rotates to an upright position by the use of inserting the stopping block
631
into the opening
621
and being stopped by the stopping block
613
.
Although at the beginning of the prior vehicle windshield being turned on and starting to swing, the rotating base of the prop-up device of windshield wiper can automatically fold the top pole structure through the resilient effect generated by twist resilience, so the top pole does not support against the surface of the windshield glass
4
and the rubber strip of windshield wiper can be tightly against onto the windshield glass to perform the intended function of expelling rain. However, after the prior windshield wiper finishes swinging, it requires manual power to rotate the top pole of the prop-up device of windshield wiper to the upright state, so the top pole structure supports against the windshield glass again and props up the rubber strip of windshield wiper to separate from the surface of the windshield glass.
SUMMARY OF THE INVENTION
The present invention relates to the automatic prop-up device of windshield wiper, which includes correspondingly a roller device and a wedge device at the near lowest position of the windshield wiper swinging. By the way of the roller device making opposite movement against the wedge device to prop up the scrapping rubber strip of windshield wiper, when the windshield wiper swings to the lowest position or stops swinging, and separate from the windshield glass in order to prolong the usage life of the scrapping rubber strip of windshield wiper.
The primary objective of the present invention is to provide an automatic prop-up device of windshield wiper that is able to prop up the windshield wiper so that it is separated from the windshield glass before the windshield wiper is turned on in order to prolong the usage life of windshield wiper.


REFERENCES:
patent: 3226258 (1984-01-01), None
patent: 3325707 (1985-01-01), None
patent: 1-249549 (1989-10-01), None

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