Brushing – scrubbing – and general cleaning – Attachments – Optical-member-attachable cleaner
Reexamination Certificate
1999-11-03
2001-07-03
Graham, Gary K. (Department: 1744)
Brushing, scrubbing, and general cleaning
Attachments
Optical-member-attachable cleaner
C015S250160, C015S250230, C015S250351
Reexamination Certificate
active
06253409
ABSTRACT:
CROSS REFERENCE TO RELATED APPLICATION
This application is based upon and claims the benefit of priority of Japanese Patent Application No. H.10-314855 filed on Nov. 5, 1998, the contents of which are incorporated herein by reference.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a wiper device for wiping a wind shield glass of a vehicle having a simple mechanism for lifting a wiper blade at a place where the wiper device is stopped and the wiper blade is concealed with less rattling noises.
2. Description of Related Art
A conventional wiper device for wiping a wind shield glass of a vehicle is provided with a mechanism for lifting a wiper blade to prevent deformation of a blade rubber of the wiper blade which is pressed against the wind shield glass by a biasing force of a wiper arm when the wiper device is stopped.
In the wiper device with the wiper blade lifting mechanism, the wiper arm holds the wiper blade so as to make the wiper blade pivot on a holding axis. The wiper arm is provided with a slider capable of running onto a lifter located at a place where the wiper device is stopped and the wiper blade is concealed. Therefore, when the wiper blade is stopped and concealed, the wiper blade is lifted not to make the blade rubber touch on any portion of a vehicle body so that the deformation of the blade rubber may be prevented.
The conventional wiper device, however, has a drawback that, during the period when the wiper blade is stopped and concealed, the wiper blade tends to pivot on the holding axis due to the vehicle body vibration generated by the vehicle running on the road, in particular, on uneven road. As a result, both ends of the wiper blade are likely to touch on the vehicle body, thus causing rattling noises.
To cope with this problem, as shown in
FIG. 14
, there is a conventional wiper device
80
in which the wiper arm
12
is provided on a leading end thereof with an E type clip
81
for holding the wiper blade
14
and a letter Z shaped plate spring stopper
82
is inserted between the E type clip
81
and the wiper blade
14
. Therefore, the pivoting movement of the wiper blade
14
is restrained by the biasing force of the plate spring stopper
82
so that the rattling noises may be prevented.
However, the conventional wiper device mentioned above needs a special structure for holding the wiper blade (the E type clip
81
, the letter Z shaped plate spring stopper
82
and so on) so that more number of component parts and more time for fabrication may become necessary, resulting in higher cost.
Further, in case of replacing a used wiper blade (or blade rubber, if easily detached from the lever of the wiper blade) which is held by the wiper arm under the special structure mentioned above, the plate spring stopper
82
has to be reset at a given position when a new wiper blade is attached to the wiper arm so that replacement work of the wiper blade may be troublesome.
SUMMARY OF THE INVENTION
The present invention has been made in view of the above mentioned problem, and an object of the present invention is to provide a wiper device for vehicles having a simple construction for lifting the wiper blade so that the wiper blade may be easily replaced and, further, the rattling noises may be suppressed.
To achieve the above object, the wiper blade having a holding axis through which the wiper blade is rotatably held by the wiper arm. A slider unit is attached to the wiper blade at a position being shifted in a direction of the wiper arm or in an opposite direction to the wiper arm from the holding axis. A lifter is disposed at the vehicle body at a position where the wiper device is stopped and the wiper blade is concealed.
According to the wiper device mentioned above, the slider unit runs onto the lifter to lift the wiper blade so that the wiper blade may be rotated on the holding axis until the wiper blade is stopped in relation to the wiper arm when the wiper device is stopped and the wiper blade is concealed.
Further, an elastic element for absorbing noise such as rubber or sponge is disposed between the wiper arm and wiper blade so that the wiper blade comes in contact with the wiper arm via the elastic element when the wiper blade is lifted.
Furthermore, the wiper blade has ventilation holes on an upper side and the slider is provided at an end in an axial direction of the wiper blade with a projecting portion clinched to a periphery of the ventilation holes and at another end in an axial direction of the wiper blade with a rivet fastened at another periphery of the ventilation holes so that the slider is tightly fixed with the wiper blade without moving in the ventilation holes.
REFERENCES:
patent: 4040141 (1977-08-01), O'Steen
patent: 2326251 (1974-12-01), None
patent: 253696 (1988-01-01), None
patent: 63-28062 (1988-02-01), None
patent: 6-67228 (1994-09-01), None
Asmo Co. Ltd.
Fish & Richardson P.C.
Graham Gary K.
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