JPS60183250A - Wiper unit - Google Patents

Abstract

PURPOSE:To uniformly diffuse cleaning liquid on the whole surface of a cleaned surface and improve a cleaning effect by comprising two blades, stretching them in parallel, and providing a liquid sending means that supplies the cleaning liquid to a gap consisting of both blades. CONSTITUTION:The entire of a blade member 7 is made of a rubber elastic body. In addition, two blades 7k are connected to a blade main body 7B through a head section 7N so as to be bent. Then, a top section 7M with a cross-sectional triangular shape is formed integratedly on the upper part of the blade main body 7B and the blade member 7 is held by an equalizing pressure mechanism so that this top section 7M can be inserted in an elastic yoke member 6. Furthermore, the upper tip of a liquid sending pipe 8 is bent sharply and inserted between the two blades 7k. As a result, when cleaning liquid is supplied from the liquid sending pipe 8 while these two blades 7k are being made to touch elastically and oscillating, the cleaning liquid can uniformly be diffused on the whole surface of a glass surface.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a wiper device for cleaning raindrops and dirt.

In general, wiper devices that clean the window surface in front of the driver's seat of automobiles, etc. have conventionally brought a play 14 formed of a rubber elastic body, that is, a cleaning blade, into elastic contact (elastic contact) via a pressure equalizing mechanism or the like. This is a method that allows you to slide this on the window surface.

To date, various improvements have been made to the pressure equalization mechanism, and attempts have been made to bring the blade into uniform elastic contact with the curved window surface. Water, soapy water, etc.) are only provided by injection method. Moreover, the wiper blade is formed of only one piece of rubber elastic material, and its tip is in contact with the window surface.

Therefore, for example, when spraying cleaning liquid while driving on a highway, etc., the cleaning liquid will scatter in the -L direction of the window surface (windshield surface) due to wind pressure, and will not spread uniformly over the entire window surface. , second side/71? IJ #Chang1s■Other Questions-9--Soup If you keep the cleaning fluid delivery pressure low in case you run into trouble, the cleaning fluid will only reach the lower part of the window surface when driving at low speeds. It disappears. In addition, with conventional wiper devices, when the cleaning liquid is sprayed on the window surface, the front can not be seen until the water film is wiped off with the blade.
The object of this invention is to provide a wiper device that can completely eliminate these conventional drawbacks.

That is, the wiper device provided by the present invention is configured to have two blades that come into elastic contact with the surface to be cleaned, extend them in parallel, and supply cleaning liquid to the gap created by both blades. be.

The present invention will be described below with reference to embodiments shown in the drawings.

FIG. 1 is a perspective view showing the overall appearance of a wiper device embodying the present invention. The arm is disposed along the window surface and swings left and right by the swing drive section. 3.4 is a lever member attached to the tip of this swing arm 1 via the support shaft 2;
It is pivoted so that it can rotate freely around the center, so that it follows the window surface. Furthermore, 5.6 is an elastic yoke member that holds the blade member 7 for cleaning, the elastic yoke member 5 is rotatably held with respect to the support shaft 2, and the elastic yoke member 6 is a curved piece of the elastic yoke member 5; In addition, the lever member 4 is held by a curved piece. A combination of the lever member 3.4 and the elastic yoke members 5, 6 constitutes a pressure equalizing mechanism for the window surface of the blade member 7. The above configuration is a conventionally known technique, and detailed explanation will be omitted.

Now, in the above configuration, one feature of the present invention is the shape of the blade member 7. That is, the blade member, especially the blade that comes into elastic contact with the window surface, is characterized by being composed of two blades, and a specific example thereof is shown in FIG. 3. FIG. 3 shows an enlarged cross-section of the blade member 7, and 7K is a characteristic of the present invention.
The blades are integrally formed on the blade main body 7B with constant intervals.

The entire blade member 7 is made of a rubber elastic body, and the two blades 7 are bendably connected to the main body 7B via a neck portion 7N. Further, a top portion 7M having a triangular cross section is integrally formed above, and this top portion forms the elastic yoke member 6.
The blade member 7 is held by the pressure equalizing mechanism in such a manner that it is surrounded and held by the pressure equalizing mechanism.

Furthermore, a major feature of the present invention is that the cleaning liquid is sent to the gap between the two blades with such a special shape. That is, in FIG. 1, 8 is a liquid feeding pipe for cleaning liquid, the lower part of which is not shown, but is connected to a cleaning liquid tank etc. via a liquid feeding pump, etc., and the upper side is connected to a cleaning liquid tank etc. is fixed to the lever member 3 via a stopper 9, and its tip extends to the upper end of the blade member 7. As is clear from FIG.
It is inserted between two blades 7. Liquid sending pipe 8
is inserted only slightly between both blades 7,
Therefore, the opening is opened at the upper end of the blade member 7, and the cleaning liquid is supplied between the two blades 7 at the upper end of the blade member 7.

Since this invention is constructed as described above, the swing arm 1 is moved with the two blades 7K in elastic contact with the glass surface.
When the cleaning liquid is supplied from the liquid sending pipe 8 while swinging the blade member 7 , the cleaning liquid is supplied to the upper end of the blade member 7 and flows downward between the two blades 7 . At the same time, since the blade 7 slides from side to side on the glass surface, the cleaning liquid is evenly spread over the entire glass surface, and the glass surface is reliably cleaned. In addition, when supplying the cleaning liquid, the blade member 7 does not receive wind pressure, and the supply to the parts is ensured. It will be.

Although the features of the wiper device provided by the present invention are as described above, the embodiments of the present invention are not limited to the above description and illustrated examples, but include various modified embodiments. Hereinafter, some modified embodiments will be listed and explained.

First, regarding the configuration of two blades, in the illustrated example, two blades are integrally formed in one part of one play, or one blade is formed in each part of separate parts. It is also possible to assemble both members and hold them in the lever 4 so that both blades are in row contact with the cleaning surface with a constant spacing between them. Therefore, there is no limitation as to whether both plates are configured integrally or as separate parts. However, integrally forming both blades from one member has the advantage of simplifying the holding mechanism for combination and ensuring reliable holding. It is advantageous for the plate member to be made of a rubber elastic material because it ensures elastic contact with the cleaning surface of the plate, but the material of this member is not directly related to the gist of the present invention and may be made of an elastic synthetic resin material. Alternatively, it may be a member that does not have elasticity.

Even when both blades are integrally formed like the blade member shown in FIG. 3, it goes without saying that the shape of the blade portion and the shapes of other parts are not limited to the illustrated example. In the illustrated example, a liquid sending vibrator is used as a means for sending cleaning liquid between both blades, and a structure in which this liquid sending pipe is disposed up to one end of the blade member is shown. This is not limited to the illustrated example; for example, it may be buried inside the swinging y-t\ and lever member to improve the appearance. It is preferable to open the oil feed vibrator on one side of the blade member, but it may also be located at the middle position in the longitudinal direction of the blade member, that is, at the pivot portion of the lever member in FIG. It is possible. Alternatively, a liquid sending pipe may be extended from one end to the position of the support shaft, and openings may be formed at regular intervals in the liquid sending pipe. Instead of extending this liquid sending pipe between both blades, add part + A to play 1] 2. Add shape to the blade member itself, and also form a vibrator by positioning it between both blades. YovX.

The configuration of the pressure equalization mechanism is not limited to the illustrated example, and the pressure equalization mechanism is not necessarily required.

The wiper device provided by the present invention is as described in detail below.
It can be sprayed evenly over the entire surface, making cleaning easier. In particular, even when the surface to be cleaned is subjected to considerable wind pressure, the cleaning liquid can be uniformly sprayed over the entire surface, and is not affected by the level of liquid feeding pressure at all. Even when spraying the washing liquid, it is safe because the water does not interfere with the field of vision in the 1) η direction.

[BRIEF DESCRIPTION OF THE DRAWINGS] Figure 1 is a diagram showing an embodiment of the present invention; FIG. 3 is an enlarged perspective view of the first part; FIG. It is. 1. Swing arm, 2. Support shaft. 3.4... Lever part, 5.6 ・Elastic yoke part +4
゜7...Brate member, 7N...Portrait part. 7B Blade body, 7 to 1 frame. 7M, top, 8...liquid pipe, 9 stopper, 1
, Agent: Takeo Mamiya, Patent Attorney. (Procedural amendment (method) June 28, 1980 Patent Application No. 039339 2 Name of the invention Wiper device 3 Relationship with the case of the person making the amendment Patent applicant address Goin Renge, Sakyo Ward, Kyoto City 9 Kuramachi Name Jun Miyagawa - 4 Agent 5 Date of amendment order May 29, 1980 (shipment date)
6 Subject of amendment

Claims (1)

[Scope of Claims] 1. In a wiper device that performs cleaning by bringing blades into elastic contact with the surface to be cleaned, the blades are composed of two blades, four of which are extended in parallel, and a wiper device is used to clean the surface to be cleaned. A wiper device characterized by being provided with a liquid feeding means for supplying a cleaning liquid. 2. The wiper device according to claim 1, wherein the two blades are integrally formed of a rubber elastic body. :3. 3. The wiper device according to claim 1, wherein the liquid sending means includes a liquid sending vibrator disposed at two ends of the blade.