Patent Application
20070266515
1. Field of the Invention
This invention relates to a wiper for an automobile rear-view mirror, particularly to one able to wipe out water drops on the surface of a rear-view mirror of an automobile to enable a driver to clearly watch the traffic conditions reflected in the rear-view mirror.
2. Description of the Prior Art
In reality, it is important for a driver to watch the moving conditions of the automobiles coming from behind seen in the left and the right rear-view mirror before making a turn, overtaking a car, changing lanes or parking. Since the rear-view mirrors of an automobile are respectively positioned at the opposite outer sides of an automobile; therefore, in raining days, rainwater will remain on the surface of the rear-view mirrors of an automobile, rendering the rear-view mirrors unable to reflect images clearly. In consequence, the driver of an automobile cannot clearly watch the moving conditions of the automobiles coming from behind, thus likely to cause an accident.
The objective of the invention is to offer a wiper for an automobile rear-view mirror, able to wipe out rainwater on the surface of a rear-view mirror to enable a driver to clearly watch the images reflected in the rear-view mirrors.
The wiper for an automobile rear-view mirror includes a rear-view mirror, a wiper transmission device and a wiper unit. The rear-view mirror has its front side formed with a mirror surface. The wiper transmission device is installed at the rear side of the rear-view mirror, provided with a transmission motor having its shaft fixed with a worm extending upward. The worm is engaged with a worm gear having its shaft fixed thereon with a driven gear engaged with a driving gear, which is provided with a driving rod fixed sidewise from the center of the driving gear and having its outer rectangular end inserted through the surface of the rear-view mirror. The wiper unit assembled with the driving rod of the wiper transmission device is provided with a fixing strip and a soft wiper secured on the fixing strip. The fixing strip has its inner end portion bored with an elongate slot for the rectangular end of the driving rod to fit movably therein. The wiper has its wiping surface closely contacting with the surface of the rear-view mirror. Then when the transmission motor is rotated, the worm, the worm gear, the driven gear, and the driving gear are orderly rotated to let the driving rod to move the fixing strip to sway right and left to let the wiper to wipe off rainwater on the surface of the rearview mirror.
This invention will be better understood by referring to the accompanying drawings, wherein:
A preferred embodiment of a wiper for an automobile rear-view mirror in the present invention, as shown in
The rear-view mirror 1 has its front side formed with a mirror surface 11 and its upper portion formed with an accommodating chamber 12 having its lower side pivotally connected with a protecting cover 120. The rear-view mirror 1 has its peripheral edge provided with a projecting bar 13 protruding backward.
The wiper transmission device 2 is installed at the rear side of the rear-view mirror 1 and composed of a transmission motor 20, a worm gear 21, a driven gear 22 and a driving gear 23. The transmission motor 20 has its shaft fixed with a worm 200 extending upward and engaged with the worm gear 21. The driven gear 22 is fixed on the shaft 210 of the worm gear 21, and the driving gear 23 is engaged with the driven gear 22 and provided with a driving rod 230 extending sidewise from a center of the driving gear 23 and having an outer rectangular end inserted through the surface 11 of the rear-view mirror 1.
The wiper unit 3 is assembled with the driving rod 230 of the driving gear 23 of the wiper transmission device 2, able to be received in the accommodating chamber 12 of the rear-view mirror 1. The wiper unit 3 consists of a fixing strip 31 and a wiper 30 made of a soft material and secured on the fixing strip 31. The wiper 30 of the wiper unit 3 has its wiping surface 300 at the front side closely contacting with the surface 11 of the rear-view mirror 1. The fixing strip 31 of the wiper unit 3 has its inner end portion bored with an elongate slide slot 310 for the outer rectangular end 231 of the driving rod 230 to fit movably therein and its outer end provided with a hook 311 for clasping the projecting bar 13 of the rear-view mirror 1.
To wipe out rain water on the surface 11 of the rear-view mirror 1, as shown in
When the wiper unit 3 is not used, it can be swayed in the accommodating chamber 12, and then the protecting cover 120 is covered on the lower side of the accommodating chamber 12, lefting the wiper unit 3 completely protected in the accommodating chamber 12.
While the preferred embodiment of the invention has been described above, it will be recognized and understood that various modifications may be made therein and the appended claims are intended to cover all such modifications that may fall within the spirit and scope of the invention.
