JPH0728760U - Vehicle wiper device - Google Patents

Abstract

(57) [Summary] [Object] To provide a vehicle wiper device capable of uniformly supplying a cleaning liquid over the entire wiping motion range of a wiper blade, facilitating the manufacture and assembly of parts, and having excellent strength. [Structure] An arm base rod part (1) and a hollow attached to extend from the outer end of the arm base part, the tip part (22) of which is curved, and a plurality of cleaning liquid ejection holes (23, 23) are opened at important points. The tubular extension arm (2), the connecting block (4) fitted in the distal end curved portion (22) of the extension arm (2), and the connecting block (4) sandwiched by the shaft support of the wiper blade (3). Pair of shaft support plates (31, 31) formed as
And a pin hole (42) of the connecting block (4) and a shaft support pin (5) inserted through the pin holes (32, 32) of the pair of shaft support plates (31, 31) of the wiper blade (3). ,
It is characterized by having.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a wiper device for wiping a windshield of a vehicle such as a passenger car, a truck, and a train.

[0002]

[Prior art]

 A conventionally known vehicle is provided with a wiper device for wiping the windshield and ensuring a view when traveling in bad weather such as rain.

This vehicle wiper device includes an arm attached to a shaft for driving the wiper, a wiper blade attached to a free end of the arm via a clip, and a spring and other auxiliary parts.

In addition, a conventionally known vehicle wiper device is provided with a washer for injecting a cleaning liquid, and the cleaning liquid can be sprayed from the washer at any time to move the wiper to wipe the front glass.

However, in this conventionally known washer, the cleaning liquid injection nozzle is fixed, and the cleaning liquid can be sprayed only in the central portion of the moving region of the blade rubber, so that the cleaning liquid is sufficiently contained in the peripheral portion. Since there was no supply, the windshield was not wiped sufficiently, visibility was poor, and traffic safety was hindered.

In view of such a problem, the present inventor previously disclosed in Japanese Patent Application No. 4-31414 a vehicle wiper device in which a cleaning liquid is ejected from a clip portion for attaching a wiper blade at a tip of a wiper arm. Disclosed. According to this device, the cleaning liquid is sprayed and supplied over the entire wiping motion area of the blade rubber, and a sufficient cleaning effect is obtained, but it takes some time to manufacture and assemble parts, and the wiper blade There is a problem that the strength of the mounting portion is not always sufficient.

[0007]

[Problems to be solved by the device]

 The present invention has been made to solve these problems, and the purpose thereof is to be able to uniformly supply the cleaning liquid over the entire wiping motion region of the blade rubber, and thus to always maintain the best view. Another object of the present invention is to provide a vehicle wiper device that is easy to manufacture and assemble parts and has excellent strength.

[0008]

[Means for Solving the Problems]

 The purpose of the above is to mount the arm base rod part attached to the wiper drive shaft and the arm base rod part so as to extend from the outer end of the arm base rod part. A hollow tubular extension arm that is curved and has a plurality of cleaning solution ejection holes formed in the key points, and a groove that is fitted into the curved end of the extension arm and that holds the curved end of the extension arm. In addition, the connecting block has a pin hole for attaching the wiper blade, and the pin hole that matches the pin hole of the connecting block is formed so as to sandwich the connecting block at the pivotal support portion of the wiper blade. The pair of shaft support plates, the pin holes of the connecting block and the pair of shaft support plate pins of the wiper blade. This can be achieved by a vehicle wiper device characterized in that it has a shaft support pin that is inserted into the hole.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION

 Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. 1 is a front view of an embodiment of a vehicle wiper device according to the present invention, FIG. 2 is a side sectional view thereof, FIG. 3 is an enlarged view of a portion surrounded by a dashed line in FIG. 2, and FIG. 4 is a wiper blade. FIG. 5 is an exploded perspective view of the mounting portion, and FIG. 5 is an explanatory view of an operating state of the vehicle wiper device according to the present invention.

In the figure, 1 is a wiper arm base rod, 2 is a hollow tubular extension arm, 3 is a wiper blade, 4 is a connecting block, 5 is a pin, 6 is a cleaning liquid supply tube, 7 is a cleaning liquid, and 8 is a cleaning liquid. It is a windshield.

The arm base rod portion 1 is attached to a wiper drive shaft and is reciprocally rotated along the windshield surface during operation. A hollow tubular extension arm 2 is fitted to the outer end of the arm base 1 so as to extend therefrom, and a cleaning liquid supply tube 6 is connected to the inner end 21 of the extension arm.

The cleaning liquid supplied from the tube 6 is guided to the tip curved portion 22 through the conduit 20 in the extension arm, and is ejected from the plurality of ejection holes 23 and 23 opened at the key points of the tip curved portion 22. It is like this.

Then, the shaft support 31 of the wiper blade 3 is attached to the tip of the extension arm 2 via the connecting block 4. That is, on the outer surface of the connecting block 4, a groove portion 41 for stably holding the tip curved portion 22 of the extension arm 2 is formed, and a pin hole 42 is formed so that the pin 5 supports the shaft support portion 31 of the wiper blade 3. The wiper blade 3 can be attached to the tip of the extension arm 2 by inserting it into the holes 32, 32 and the pin hole 42.

As described above, the connecting block 4 is fitted inside the distal end curved portion 22 of the extension arm, and these are fitted between the shaft supporting portions 31, 31 of the wiper blade 3 and pinned by the pin 5. This makes it possible to stably attach the extension arm 2 and the wiper blade 3 with sufficient strength.

When the wiper device according to the present invention configured as described above is used, as shown in FIG. 5, the cleaning liquid 7 is sprayed in four directions from the tip of the extension arm 2 and is accompanied by the movement of the wiper blade 3. Then, the injection source of the cleaning liquid 7 also moves, so that the sufficient cleaning liquid is supplied over the entire surface of the wiping operation area of the blade rubber 33.

[0016]

[Effect of device]

 Since the present invention is configured as described above, according to the present invention, since the sufficient cleaning liquid is supplied over the entire wiping operation area of the wiper blade 3, the front glass can be completely wiped. Since the visibility is always good, it has a great effect on traffic safety. Further, it is possible to provide a wiper device which is easy to manufacture and assemble parts and has excellent strength.

The configuration of the present invention is not limited to the above-described embodiment, and for example, the present invention can be applied to any type of wiper other than the above, such as the shape of the connecting block and the pin fixing. The method can also be modified in design as appropriate, and therefore, the present invention covers all modified embodiments that can be easily conceived by those skilled in the art from the above description.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of a vehicle wiper device according to the present invention.

FIG. 2 is a side sectional view thereof.

FIG. 3 is an enlarged view of a portion surrounded by a dashed line in FIG.

FIG. 4 is an exploded perspective view of a wiper blade mounting portion.

FIG. 5 is an explanatory view of an operating state of the vehicle wiper device according to the present invention.

[Explanation of symbols]

 1 Arm base rod part 2 Extension arm 20 Pipe line 21 Inner end 22 Tip curved part 23,23 Cleaning liquid ejection hole 3 Wiper blade 31,31 Shaft support plate 32,32 Pin hole 33 Blade rubber 4 Connecting block 41 Groove 42 Pin hole 5 Shaft support pin 6 Cleaning liquid supply tube 7 Cleaning liquid 8 Windshield

Claims (1)

[Scope of utility model registration request] 1. An arm base rod part (1) attached to a wiper drive shaft, and an arm base rod part (1) attached so as to extend from an outer end of the arm base rod part (1), and a cleaning liquid supply tube () at an inner end (21) thereof. 6) is connected, and a distal end portion (22) thereof is curved and a plurality of cleaning liquid ejection holes (23, 23) are opened at a required position, and a hollow tubular extension arm (2), and an extension arm (2). ) Is fitted into the tip curved part (22) of the extension arm (2), and a groove (41) for holding the tip curved part (22) of the extension arm (2) is formed on the outer surface thereof, and for attaching the wiper blade (3). Connecting block (4) having pin holes (42)
And a pair of pin holes (32, 32) that match the pin holes (42) of the connecting block (4) and are formed so as to sandwich the connecting block (4) in the pivotal support portion of the wiper blade (3). Of the shaft support plate (31, 31), the pin hole (42) of the connecting block (4) and the pin hole (32, 32) of the pair of shaft support plates (31, 31) of the wiper blade (3). A wiper device for a vehicle, comprising: