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Washer fluid spraying apparatus

A technology of spraying device and cleaning fluid, which is applied in the direction of valve device, measuring device, vehicle cleaning, etc., can solve the problem of high manufacturing cost and achieve the effect of suppressing manufacturing cost

Inactive Publication Date: 2010-03-24
NISSAN MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that the manufacturing cost becomes high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] according to Figure 1 ~ Figure 4 The cleaning liquid spraying device A of Example 1 which is the best embodiment of the present invention will be described.

[0022] First, its structure will be described.

[0023] Such as figure 1 As shown, the washer liquid injection device A of Embodiment 1 includes a liquid tank 1 , a washer liquid pump 2 , a hose 3 , a washer liquid nozzle 4 , and a spray amount control device (residual amount notification device) 5 .

[0024] The tank 1 is used to store the washer fluid W, and is installed in an engine room (Japanese: Engineering Luim) or the like not shown in the figure.

[0025] Cleaning liquid pump 2 is installed in the bottom of liquid tank 1, utilizes motor 23 (referring to Figure 4 ) is driven to suck the cleaning liquid W from the suction pipe 21 and discharge it from the discharge pipe 22. In addition, a suction port 21 a at the tip of the suction pipe 21 opens near the bottom 1 a of the liquid tank 1 . Also, the wa...

Embodiment 2

[0045] The following is based on Figure 5 and Figure 6 A cleaning liquid spraying device according to Example 2 of the embodiment of the present invention will be described.

[0046] In addition, the same code|symbol is attached|subjected to the part which is the same as or equivalent to the said Example 1, and it demonstrates centering on a different part.

[0047] In the washer liquid spraying device of Embodiment 2, an elbow 251 is provided as suction amount limiting means (remaining amount notifying means).

[0048] The curved pipe 251 is arranged such that the opening 251a at one end thereof is disposed in the suction pipe 21, and the opening 251b at the other end is exposed on the liquid surface w of the cleaning liquid W when the remaining amount of the liquid tank is reduced to less than the set remaining amount. Roughly L-shaped.

[0049] In this second embodiment, the structure other than the inhalation amount limiting device is the same as that of the first emb...

Embodiment 3

[0059] The following is based on Figure 7 The cleaning liquid spraying device C of Example 3 of the embodiment of the present invention will be described.

[0060] In addition, the same code|symbol is attached|subjected to the part which is the same as or equivalent to other Example, and it demonstrates centering on a different part.

[0061] This Embodiment 3 is an example of an injection amount limiting device which employs the circulation switching device 330 as one form of the remaining amount notifying device.

[0062] The circulation switching device 330 has a return flow path 331 and a float valve (on-off valve) 332 .

[0063] The return path 331 is a pipe connecting the discharge pipe 322 on the discharge side of the cleaning liquid pump 302 and the liquid tank 301 , and a discharge nozzle for discharging the cleaning liquid W into the liquid tank 301 is provided at the opening end of the liquid tank side of the return path 331 . 333.

[0064] The float valve 332 i...

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PUM

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Abstract

In the present washer fluid spraying apparatus, when the amount of the remaining washer fluid in the tank is reduced, the buoyant force of the float does not have an effect to the valve member, and therefore the cross-sectional area of the flow passage of the valve member is reduced. Consequently spraying amount is limited compared to a case where there is a plenty of amount of remaining washer fluid. Therefore, compared to the structure that controls the washer pump driving status by detecting the remaining amount by a sensor, the driver of the vehicle can know that the amount of the remaining washer fluid in the tank is reduced while limiting the manufacturing costs.

Description

technical field [0001] The present invention relates to a washer fluid spraying device for spraying washer fluid to a window glass in a vehicle. Background technique [0002] Conventionally, in automobiles and the like, there is known a washer fluid spraying device that sprays the washer fluid in the tank to the window glass by using a washer fluid pump. [0003] Also, in such a cleaning liquid spraying device, it is well known that the following devices are included: when the remaining amount of cleaning liquid in the liquid tank has decreased, a device that warns the user through a warning light or the like; When the remaining amount of liquid becomes small, the motor for driving the cleaning liquid pump is intermittently driven to make the spraying state of the cleaning liquid different from the normal time, etc. ); and when the remaining amount of cleaning liquid in the liquid tank becomes less, a control device (for example, refer to Patent Document 2: Japanese Patent ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60S1/48
CPCF16K31/22F04D15/0022G01F23/0015G01F23/32B60S1/50B60S1/481G01F23/56G01F23/0038F04D15/005G01F23/0023G01F23/40Y10T137/7303
Inventor 山口一之
Owner NISSAN MOTOR CO LTD
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