JPH0572618U - Wiper device - Google Patents

Abstract

(57) [Summary] [Purpose] To secure the driver's field of view when the washer fluid is ejected onto the window glass, and to enable the washer fluid once ejected to be reused. A wiper blade 3 is fixed to a wiper arm 1 that swings along a windshield 2 of a vehicle.
On the contact surface 3b of the wiper blade 3 with the window glass 2, a long groove extending substantially in the longitudinal direction is provided. A supply nozzle 4 connected to a jet pump is attached to one end of the wiper arm 1, and a water collecting nozzle 9 connected to a suction pump is attached to the other end. The washer liquid is supplied from the supply nozzle 4 only into the long groove, and the used washer liquid is collected from the water collecting nozzle 9 and reused.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a wiper device for cleaning a windshield of a vehicle using a washer fluid.

[0002]

[Prior Art]

 Usually, a wiper device is used as a means for cleaning the windshield of a vehicle, especially the windshield. Generally, in a wiper device, a wiper arm driven by a motor swings along a window glass, and a rubber wiper blade fixed to the wiper arm slides in close contact with the window glass. This is to wipe off raindrops and dust adhering to the windshield to ensure the driver's visibility.

Further, when muddy water or the like adheres to the window glass and is dried and becomes a muddy or solid matter, the matter can be completely wiped off simply by sliding the wiper blade. Since it is difficult to remove it, a method of spraying a washer liquid onto the window glass from the jet nozzle provided on the hood of the vehicle, returning the mud or solid adhered substances to a liquid state again, and then wiping with a wiper blade Is used.

[0004]

[Problems to be solved by the device]

 As described above, in the conventional wiper device, when wiping off mud or solid deposits, it is necessary to spray the washer fluid onto the window glass from the jet nozzle provided on the hood of the vehicle. The washer fluid is spread over a wide area of the windshield. Therefore, there is a drawback that the driver's view is momentarily obstructed and the safety is impaired. Further, the washer liquid ejected from the ejection nozzle is wiped off by the wiper blade together with the adhered substances adhering to the window glass, so that there is a problem that it is treated as a so-called single use and is not economical.

The present invention has been made in view of the above problems, and secures the driver's visibility when the washer fluid is ejected, and enables the ejected washer fluid to be collected and reused. It is an object.

[0006]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention relates to a wiper device including a wiper arm that swings along a windshield of a vehicle and a wiper blade that is fixed to the wiper arm and slides in close contact with the windshield. A long groove extending in a direction substantially orthogonal to the sliding direction of the wiper blade is provided on the contact surface with the window glass, and a supply device for supplying the washer liquid into the long groove and a washer liquid in the long groove are collected. A water collecting device for water is connected to the long groove.

[0007]

[Action]

 According to the above means, since the long groove is provided on the contact surface of the wiper blade with the window glass, and the supply device for supplying the washer liquid is provided in the long groove, the washer liquid ejected from the supply device is wiped by the wiper blade. It is supplied only in the long groove of the and does not spread on the wind glass surface.

Further, since the long groove of the wiper blade is provided so as to extend in a direction substantially orthogonal to the sliding direction of the wiper blade, the wiping performance such that a gap is generated on the wiping surface when the wiper blade is slid In addition, if the wiper blade is slid while the washer liquid is supplied into the long groove, the washer liquid will spread over a wide area of the window glass and wipe off mud or solid deposits. It will not be left without it. Further, since the water collecting device for collecting the washer liquid in the long groove of the wiper blade is provided, the washer liquid once jetted into the long groove can be recovered and reused.

[0009]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a side view showing a wiper device of the present invention, FIG. 2 is a sectional view taken along the line AA of FIG. 1, and FIG. 3 is an explanatory view showing the entire configuration of the wiper device of the present invention.

In FIG. 1, reference numeral 1 denotes a wiper arm which is driven by a motor (not shown) and which swings along the window glass 2 in the direction of arrows BC in FIG. 2 (perpendicular to the plane of FIG. 1). The wiper arm 1 has a support arm 1a extending from the hood side of the vehicle, a sub arm 1c rotatably attached to a support shaft 1b at the tip of the support arm 1a, and both end portions of the sub arm 1c. It is composed of rotating arms 1d and 1d that are pivotally supported by and a blade holder 1e held by the rotating arms 1d and 1d. As shown in FIG. 2, the blade holder 1e has a substantially C-shaped cross section, and has engaging sides 1f and 1f facing each other extending in the longitudinal direction (left-right direction in FIG. 1).

Reference numeral 3 in the drawing denotes a wiper blade made of an elastic material such as rubber. Engaging grooves 3a, 3a corresponding to the thickness of the engaging sides 1f, 1f of the blade holder 1e are provided on both side surfaces of the wiper blade 3 so as to extend in the longitudinal direction, and the engaging grooves 3a, 3a are formed in the engaging grooves 3a, 3a. The wiper arm 1 and the wiper blade 3 are connected by fitting the engagement sides 1f and 1f of the blade holder 1e. Further, on the contact surface 3b of the wiper blade 3 with the window glass 2, a long groove 3c having a substantially V-shaped cross section is formed so as to extend over the entire longitudinal direction (both ends are sealed).

A supply nozzle 4 having an opening connected to one end of the long groove 3c is attached to one end of the wiper arm 1 (upper end in the vehicle). The supply nozzle 4 is connected to a jet pump 6 via a supply tube 5 having elasticity as shown in FIG. 3 to form a supply device S. Further, the jet pump 6 is connected by a pipe 7 to a tank 8 filled with the washer liquid W. The open end of the pipe 7 extends to the vicinity of the bottom surface of the tank 8 so that the washer liquid W can be pumped up when the jet pump 6 is operated.

On the other hand, a water collecting nozzle 9 having an opening connected to the other end of the long groove 3c is attached to the other end of the wiper arm 1 (a lower end of the vehicle). The water collecting nozzle 9 is connected to a suction pump 11 via a water collecting tube 10 having elasticity, and a water collecting device V is formed. The suction pump 11 is connected to a filter 13 via a pipe 12, and the filter 13 is connected to the tank 8 described above via a pipe 14.

The jet pump 6, the suction pump 11, the filter 13 and the like are configured by a known mechanism, and detailed description thereof will be omitted. Further, the suction pump 11 does not necessarily have to be provided between the water collecting nozzle 9 and the filter 13, and the same operation can be performed even if it is provided between the filter 13 and the tank 8.

Next, the operation of the wiper device having the above configuration will be described. In general, when wiping off raindrops or other deposits adhering to the window glass 2, the wiper arm 1 is swung while the contact surface 3b of the wiper blade 3 is in contact with the window glass 2 as shown in FIG. The adhered matter is wiped off the both side surfaces of the wiper blade 3, and the surface of the window glass 2 is washed. At this time, since the contact surface 3b of the wiper blade 3 is largely cut out by the long groove 3c, the sliding resistance of the wiper blade 3 is not so large, and an unreasonable load is not applied to the motor as a drive source. ..

On the other hand, when muddy water or the like adheres to the surface of the window glass 2 and is dried to become a muddy or solid deposit, the window glass 2 is washed by the following operation.

By operating an ejection switch (not shown) provided on the vehicle, the ejection pump 6 shown in FIG. 3 operates, and the washer liquid W 1 is supplied to the supply nozzle 4 via the pipe 7 and the supply tube 5. The washer liquid W supplied to the supply nozzle 4 is fed into the long groove 3c from one end side of the wiper blade 3. Then, if the wiper arm 1 is swung in this state and the wiper blade 3 is slid in the direction of arrow B in FIG. 2, the washer liquid W remains in the long groove 3c as shown in FIG. The entire surface is wiped by. Therefore, the mud-like or solid adhering matter is dissolved in the washer liquid W and becomes liquid such as muddy water again, and is easily wiped off by the contact surface 3b of the wiper blade 3.

As described above, since the washer fluid W ejected by the ejection pump 6 is supplied only into the long groove 3c of the wiper blade 3, the washer fluid W does not spread on the surface of the window glass 2 and the operation is performed. The person's view is not obstructed.

When the jet switch of the vehicle is operated, the suction pump 11 is operated together with the jet pump 6. Then, the washer liquid W supplied from the one end side of the long groove 3c of the wiper blade 3 by the jet pump 6 advances to the other end side of the long groove 3c by gravity and the suction force of the suction pump 11, and the water collecting nozzle 9 Is sucked from. The washer liquid W sucked from the water collecting nozzle 9 is sent to the filter 13 via the water collecting tube 10, the suction pump 11, and the pipe 12. The washer liquid W containing foreign matter such as mud is filtered by this filter 13, and the cleaned washer liquid W is returned to the tank 8 through the pipe 14.

As described above, the washer liquid W once ejected from the supply nozzle 4 passes through the inside of the long groove 3c of the wiper blade 3 and is recovered from the water collecting nozzle 9 with almost no divergence and can be reused. it can. Therefore, the replenishment amount of the washer liquid W is drastically reduced, and the economical efficiency is significantly improved. Further, if the purpose is to reuse the washer liquid W only several times, it is possible to remove the filter 13 and use an inexpensive wiper device.

In the above-described embodiment, the supply nozzle 4 for the washer liquid W is attached to one end of the wiper arm 1. However, as shown in FIG. 4, a plurality of ejection ports 15a are provided in the wiper blade 3. It is also possible to embed the tube 15 having the above in the longitudinal direction and jet the washer liquid W from this tube 15 into the long groove 3c. Further, the long groove 3c of the wiper blade 3 may be provided not only with one line but also with a plurality of lines, and the cross-sectional shape thereof can be appropriately changed.

Further, although the suction pump 11 is provided in order to collect the washer liquid W in the above embodiment, the washer liquid W in the long groove 3c is forcibly forced by the water pressure of the jet pump 6, for example. If it is sent to the side, the suction pump 11 is not necessarily provided.

[0023]

[Effect of the device]

 As described above, according to the present invention, the wiper blade is provided with the long groove on the close contact surface with the window glass, and the supply device for supplying the washer liquid is provided in the long groove. The washer liquid is supplied into the long groove of the wiper blade and does not spread on the windshield surface. Therefore, the visibility of the driver when the washer fluid is ejected is not obstructed and safety is ensured.

Moreover, since the long groove of the wiper blade is provided so as to extend in a direction substantially orthogonal to the sliding direction of the wiper blade, the wiping performance of the wiper blade itself does not deteriorate and the washer liquid is supplied into the long groove. If the wiper blade is slid in this state, the washer liquid in the long groove will spread over a wide area of the window glass, and no mud or solid deposits will remain without being wiped off. In addition, since a water collecting device that collects the washer liquid in the long groove of the wiper blade is provided, it is possible to collect the washer liquid once jetted in the long groove and reuse it, which is highly economical. A wiper device can be provided.

[Brief description of drawings]

FIG. 1 is a side view showing a wiper device of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is an explanatory view showing the overall configuration of the wiper device of the present invention.

FIG. 4 is a sectional view showing a wiper device according to another embodiment of the present invention.

[Explanation of sign]

 1 wiper arm 2 wind glass 3 wiper blade 3b contact surface 3c long groove 4 supply nozzle 5 supply tube 6 jet pump 9 water collection nozzle 10 water collection tube 11 suction pump S supply device V water collection device W washer liquid

Claims (1)

[Scope of utility model registration request] 1. A wiper device comprising: a wiper arm that swings along a windshield of a vehicle; and a wiper blade that is fixed to the wiper arm and that slides in close contact with the windshield. A long groove extending in a direction substantially orthogonal to the sliding direction of the wiper blade is provided on the contact surface of, and a supply device for supplying the washer liquid into the long groove and a water collecting device for collecting the washer liquid in the long groove. A wiper device characterized in that the device is connected to the long groove.