JPH09188226A - Liquid dripping and deterioration preventive wiper blade - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the wiper blade which has a water distribution groove provided in the wiper blade, thereby uniformly feeds cleaning fluid to the water retaining space of the wiper blade out of its water injection ports, thereby cleans a pane of window glass, can wipe off dirts over the pane of window glass without spraying excess cleaning fluid when the wiper blade in use, and furthermore prevents itself from being deteriorated. SOLUTION: The wiper blade is formed out of a wiper blade main body 1, a water distribution groove 7 in a hollow shape formed in the wiper blade main body 1, a water feed port 9 bored at the center part of the water distribution groove 7, a plurality of water injection holes bored in the wall part opposite to the water feed port 9, a wiping part provided for the wiper blade main body in such a way that a water retaining space 11 is formed in a place at the outlet side of the water injection ports 8 while being brought into contact with a pane of window glass, and of a water feed connection pipe 10 which is inserted into the water feed port 9 at its one end, and is communicated with a water feed tube 2 at the other end.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiper blade of a vehicle such as an automobile, and in particular, prevents stains around the window glass due to the use of the window cleaning liquid and dripping of the cleaning liquid generated after the wiper is used. The present invention relates to a wiper blade which is prevented from being deteriorated due to the distortion of the wiper blade due to the use thereof.

[0002]

In the conventional wiper blades used for vehicles such as automobiles, the jetting of the window cleaning liquid frequently contaminates the periphery of the window glass, and after the wiper stops, excess window cleaning liquid is generated. Since the surface of the window glass dripped down, it was necessary to operate the wiper again or wipe the window glass with a towel etc. to remove it. Further, if it is frequently used, when the wiper is not used, the wiper blade remains in a distorted state, which is a cause of rapidly accelerating the deterioration of the wiper blade.

The present invention has been made in view of the problems of such a conventional wiper blade, and it is possible to wipe off the dirt on the window glass without sprinkling an excessive cleaning liquid during use, and An object of the present invention is to provide a wiper blade that can prevent deterioration of the wiper blade.

[0004]

A wiper blade of the present invention comprises a wiper blade main body, a water distribution groove formed in the wiper blade main body in a hollow shape, and a water supply hole formed in a central portion of the water distribution groove. A plurality of water injection holes formed in the wall portion of the wiper blade on the opposite side of the water supply hole, and the wiper blade main body so as to form a water retaining space on the outlet side of the water injection hole and in contact with the window glass. And a water supply connection pipe having one end fitted into the water supply hole and the other end communicating with the water supply tube.

With such a structure, the window cleaning liquid flows from the water supply tube through the water supply connection pipe into the water distribution groove in the wiper blade body from the water supply hole of the wiper blade, and the plurality of injection holes communicated with the water distribution groove. It is evenly poured into the water retaining space to wash the window glass. Particularly, in the present invention, since the wiper switch is provided with a time difference so that the wiper is started in a state where the water retaining space is sufficiently filled with the cleaning liquid, the windshield is not damaged by the blank wiping. In addition, since the wiper arm is equipped with a mechanism that allows the wiper arm to return slightly when the switch is turned off, the wiper blade's wiping part and the window glass come into contact with each other at a right angle due to this reverse movement, and frequent use of the wiper blade Deterioration due to is prevented as much as possible.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a wiper blade of the present invention will be described below with reference to the accompanying drawings.

As shown in FIG. 1, a wiper blade 1 of the present invention is attached to a wiper arm 4 rotatably attached to a vehicle body (frame) 13 of an automobile or the like by a motor or the like started by a wiper switch. When used, the window glass 3 is brought into contact with it. A water reservoir 5 with a water supply pump is connected to the wiper blade 1 via a water supply tube 2. The window cleaning liquid is stored in the water storage container 5, and a water supply pump (not shown) is activated by a switch to drive the window cleaning liquid, thereby reducing the ratio of the window cleaning liquid to the water storage container 5 (in FIG. (Shown) to the wiper blade 1 via the water supply tube 2.

As shown in the longitudinal section in FIG. 2, the wiper blade 1 of the present invention is made of a predetermined hard rubber material,
A hollow water distribution groove 7 is formed substantially over the main body portion, and a water supply hole 9 communicating with the water distribution groove 7 is formed in the central portion of the water distribution groove 7 so as to face the water supply hole 9 of the water distribution groove 7. A large number (for example, 6) of water injection holes 8 are formed in the side wall portion. Further, a water retaining space 11 is formed on the outlet side of the water injection hole 8 that is in contact with the window glass 3 by leaving the wiping portion 14 around the wiper blade 1. Further, one end of an elbow-shaped water supply connection pipe is fitted into the water supply hole 9, and the other end is connected to the water supply tube 2.
It is connected to the. Further, the water retention skirt 14 is connected to a portion facing the wiping portion 14 at a right angle, and is formed in a bellows shape so as to absorb the kinking of this portion as shown in FIG. Further, as shown in FIG. 5, a minute drainage hole 15 is opened in the water retaining skirt 14 on the lower end side of the wiper blade so that the cleaning liquid is discharged to the outside from the water retaining space 11 after use.

Here, the wiper arm 4 is started and rotated by a wiper switch (not shown) similar to the one which has always been provided in a conventional automobile, and the water supply switch (not shown) of the wiper arm 4 is turned on. By
The window cleaning liquid in the water storage container 5 is pumped up by the water supply pump attached to the water storage container 5 for the cleaning liquid, and the wiper blade 1 is passed from the water supply tube 2 through the water supply connection pipe 10.
It flows into the water distribution groove 7 from the water supply hole 9. The cleaning liquid flowing into the water distribution groove 7 is supplied from the plurality of water injection holes 8 formed so as to communicate with the water distribution groove 7 of the wiper blade 1 in the water retaining space 1
It is evenly injected into 1. In this wiper blade 1, the wiper switch is provided with a time difference so as to start in a state where the water retaining space 11 is sufficiently filled with the cleaning liquid.
The window glass 3 will not be damaged by wiping without a window cleaning liquid. Furthermore, since the wiper arm is equipped with a mechanism that allows the wiper arm to retreat slightly when the wiper switch is turned off, the wiping part 14 becomes two legs when reversing, and the window glass 3 and the wiping part 14 are at right angles. Therefore, the wiper blade 1 is prevented from being deteriorated due to the distortion when not in use.

[0010]

Since the wiper blade of the present invention is constructed as described above, unlike the conventional method of directly injecting the window cleaning liquid onto the window glass, it does not consume extra cleaning liquid, and , Without scattering the window cleaning liquid around the window glass,
After use, excess cleaning liquid will not flow down the window glass surface. In addition, since the wiper blade and the windshield are in contact with each other when the wiper blade returns, the wiper blade has two legs, so that the wiper blade is less distorted, and as a result, deterioration of the wiper blade can be prevented. . Further, the wiper arm is started with a predetermined time lag after the water retaining space is sufficiently filled with the window cleaning liquid, so that the window glass is prevented from being scratched due to the blank wiping.

[Brief description of the drawings]

FIG. 1 is a partial vertical cross-sectional view of the entire configuration showing a state in which a wiper blade according to an embodiment of the present invention is attached to a window glass.

FIG. 2 is a vertical sectional view of the wiper blade shown in FIG.

FIG. 3 is a transverse cross-sectional view of the wiper blade as seen from the arrow III-III in FIG.

FIG. 4 is a plan view of the wiper blade viewed from the direction of the window glass surface.

5 is an enlarged plan view of part A of the wiper blade shown in FIG.

[Explanation of symbols]

 1 Wiper blade 2 Water supply tube 3 Window glass 4 Wiper arm 5 Window cleaning water reservoir with water supply pump 6 Bonnet hood 7 Water distribution groove 8 Water injection hole 9 Water supply hole 10 Water supply connection pipe 11 Water retention space 12 Water retention skirt 13 Body (frame) 14 Wiping part 15 Drainage hole

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[Procedure amendment]

[Submission date] January 23, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction contents]

As shown in the longitudinal section in FIG. 2, the wiper blade 1 of the present invention is made of a predetermined hard rubber material,
A hollow water distribution groove 7 is formed substantially over the main body portion, and a water supply hole 9 communicating with the water distribution groove 7 is formed in the central portion of the water distribution groove 7 so as to face the water supply hole 9 of the water distribution groove 7. A large number (for example, 6) of water injection holes 8 are formed in the side wall portion. Further, a water retaining space 11 is formed on the outlet side of the water injection hole 8 that is in contact with the window glass 3 by leaving the wiping portion 14 around the wiper blade 1. Further, one end of an elbow-shaped water supply connection pipe is fitted into the water supply hole 9, and the other end is connected to the water supply tube 2.
It is connected to the. Further, the water retention skirt 12 is connected to a portion facing the wiping portion 14 at a right angle, and is formed in a bellows shape so as to absorb the kinking of this portion as shown in FIG. Further, as shown in FIG. 5, a minute drain hole 15 is opened in the water retaining skirt 12 on the lower end side of the wiper blade so that the cleaning liquid is discharged from the water retaining space 11 to the outside after use.

Claims (2)

[Claims] 1. A wiper blade main body, a water distribution groove formed in the wiper blade main body in a hollow shape, a water supply hole formed in a central portion of the water distribution groove, and the wiper blade main body on the opposite side of the water supply hole. A plurality of water injection holes bored in the wall of the wiper blade, and a wiping portion provided in the wiper blade body so as to form a water retention space on the outlet side of the water injection hole, which is in contact with the window glass, A liquid drop / deterioration preventive wiper blade comprising: a water supply connection pipe having one end fitted into the water supply hole and the other end communicating with a water supply tube. 2. The wiper blade according to claim 1, further comprising a mechanism mounted on the wiper arm and slightly returning when stopped, and a wiper switch which is started with a predetermined time difference after the cleaning liquid fills the water retaining space.