JP2009029330A - Washer nozzle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain oscillation type diffusing washing liquid from a diffusing injection opening and straight injection type washing liquid from a diffusion restricted injection opening at low costs in regard to a washer nozzle. <P>SOLUTION: In this washer nozzle 1, a chip 6 having an oscillating circuit 6a for washing liquid is arranged in an injection flow path 4a so as to inject the washing liquid from an injection opening to a glass of a vehicle in the state of oscillating the washing liquid right and left. The injection opening 2 of a nozzle body 4 formed in an end of the injection flow path so as to inject the washing liquid to the glass, is structured of a plurality of injection openings of: a diffusion type injection opening 8 for oscillated washing liquid; and a diffusion restricted injection opening 7 for injecting the washing liquid, while restricting oscillation of the washing liquid. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a washer nozzle that injects a cleaning liquid onto, for example, a windshield of an automobile.

2. Description of the Related Art Conventionally, there is known a washer nozzle that includes an oscillation circuit in a cleaning liquid injection flow path and injects a cleaning liquid oscillated left and right onto a glass of a vehicle (see Patent Document 1).
JP 2004-291748 A

  The washer nozzle is provided with a diffusion injection port and a diffusion suppression injection port for improving the spray pattern of the cleaning liquid, and the diffusion suppression injection port has a jet flow having a directivity different from that of the basic injection diffusion flow. It is provided and the jet flow is auxiliary injected. The jet flow is provided with a branch flow path that leads a part thereof from the cleaning liquid supply port, and is a flow path that is separate from the oscillation flow path that is fundamentally jetted. And by jetting the cleaning liquid from this jet flow path, it solves the disadvantages of the conventional cleaning liquid injection mode and prevents the impediment to driving visibility due to water landing while supplying a sufficient amount of liquid and rotating the wiper multiple times. It is a washer nozzle that ensures a driving view quickly in a short time without being activated.

However, in the conventional washer nozzle, in order to obtain the jet flow having directivity, a branch flow path is formed in the nozzle tip separately from the oscillation flow path. Thereby, the die of the nozzle tip becomes complicated, the cost increases, and the branch channel is formed, so that water leaks from the gap between the nozzle body and the nozzle tip.
The washer nozzle according to the present invention has been proposed in order to solve such problems.

  The gist for solving the above-mentioned problems of the washer nozzle according to the present invention and achieving the object is to spray the cleaning liquid on the vehicle glass in a state of oscillating from side to side, and to provide a cleaning liquid supply channel. And a nozzle body having an injection channel communicating with the supply channel, and a chip having an oscillation circuit for cleaning liquid is fixed to the internal space of the nozzle body in the injection channel. In the washer nozzle, the nozzle body nozzle at the end of the spray channel for spraying the cleaning liquid toward the glass has a diffusion spray port for the oscillated cleaning liquid and the cleaning liquid. It is comprised with the several injection opening with the diffusion suppression injection opening made to suppress and oscillate.

  Moreover, the said diffusion suppression injection hole contains that the cross-sectional shape is a round shape or a rectangle.

  According to the washer nozzle of the present invention, the cleaning liquid is oscillated in the injection flow path, the main part of the oscillated cleaning liquid is injected from the diffusion injection port, and a part of the oscillated cleaning liquid is supplied from the diffusion suppression injection port. Oscillation is suppressed and injected. In this diffusion suppression injection port, the oscillating property of the cleaning liquid is suppressed, and it becomes a highly straight injection and reaches the glass surface. As a result, as shown in FIG. 8, the central portion in the width direction with a small amount of liquid compared to both end portions of the diffusion flow is intensively auxiliary-injected by the straight traveling injection, and the shortage of the liquid amount is solved. You can try not to disturb the view as much as possible.

  In addition, when the cross-sectional shape of the diffusion suppressing injection port is round or rectangular, it is possible to perform straight-ahead injection with strong directivity.

  As shown in FIG. 1, a washer nozzle 1 according to the present invention sprays a cleaning liquid on a glass of a vehicle from an injection port 2 in a state of oscillating left and right, and is provided with a cleaning liquid supply channel 3a. 3, a spherical nozzle main body 4 having an injection flow path 4 a communicating with the supply flow path 3 a, and a head 5 that rotatably supports the nozzle main body 4 within a desired range by a spherical seat support portion. Become.

  A chip 6 having an oscillation circuit 6 a for cleaning liquid is fixedly disposed in the inner space of the nozzle body 4 in the ejection flow path 4 a. As shown in FIG. 3, the oscillation circuit 6a has an intermediate portion between islands 6c and 6d provided so that the cleaning liquid from the injection channel 4a enters the channel inlet 6b of the chip 6 to form the oscillation circuit 6a. The cleaning liquid flows in.

  A part of the cleaning liquid collides with the wall of the nozzle body 4 and turns around to the back side of the islands 6c and 6d to form a feedback flow path that returns to the flow path inlet 6b, and flows into the intermediate part of the islands 6c and 6d Is oscillated by being excited by the cleaning liquid in the feedback flow path. This feedback flow path is formed by the back side walls of the islands 6 c and 6 d and the inner side wall 4 b of the nozzle body 4.

  And in this washer nozzle 1, as shown in FIG. 2, in order to inject the washing | cleaning liquid which passed the said oscillation circuit 6a toward the said glass, the injection port of the nozzle main body 4 in the edge part of the said injection flow path 4a Reference numeral 2 is composed of a plurality of injection ports including a diffusion suppression injection port 7 that suppresses the oscillation property of the cleaning liquid and imparts a straight traveling property for injection, and a diffusion injection port 8 for the oscillated cleaning liquid.

  As shown in FIGS. 3 to 6, the diffusion suppression injection port 7 is a hole having a uniform cross-sectional shape that communicates with the internal space of the nozzle body 4 and the outside, or a shape that expands toward the outside. It is. As shown in FIGS. 7A and 7B, the straightness varies depending on the ratio (b / a) of the dimension a in the horizontal direction and the dimension b in the axial direction in the cross section of the hole, and the setting is arbitrary. Set to The cross-sectional shape of the hole is round or rectangular (see FIG. 2).

  The diffusion suppression injection port 7 causes the cleaning liquid excited and oscillated by the oscillation circuit 6a to have a directivity injection with strong directivity with its oscillation property being suppressed. For example, diffusion having a uniform diameter as shown in FIG. As shown in FIG. 8 (B), the suppression spray port 7 is landed on the glass surface as a linear spray in which the oscillation of the cleaning liquid is lost. Further, as shown in FIG. 7 (B), the diffusion suppressing injection port 7 whose diameter is increased outwardly becomes a slightly diffused cleaning liquid as shown in FIG. 8 (A).

  In this manner, the washer nozzle 1 according to the present invention has a large amount of liquid at both ends in the left and right direction by the oscillation cleaning liquid from the diffusion injection port 8 by the conventional oscillation circuit, and a thin amount of liquid at the center portion. The field of view is not obstructed, and the cleaning liquid is supplemented to the central portion by the diffusion suppressing injection port, so that the shortage of the liquid amount is solved without operating the wiper a plurality of times, and the entire liquid is distributed substantially uniformly. In addition, it is easy to change the mold in which the nozzles 7 and 8 of the nozzle body 4 are provided. Furthermore, it is possible to inject straightly without increasing the number of parts.

They are an exploded assembly perspective view (A) and a sectional view (B) of the washer nozzle 1 according to the present invention. It is the longitudinal cross-sectional view of the washer nozzle 1 of the same invention, and the end elevation (B) seen from the front. It is sectional drawing along the AA line in FIG. 2 (A) of the chip | tip 6 and the nozzle main body 4. FIG. It is sectional drawing along the AA line of FIG. 2 (A). It is sectional drawing along the BB line in FIG. 2 (A) of the chip | tip 6 and the nozzle main body 4. FIG. It is sectional drawing along the BB line in FIG. 2 (A). It is sectional drawing (A), (B) of the spreading | diffusion suppression injection port 7 in the same washer nozzle 1, and front view (C), (D) which shows the modification of a hole shape. It is the schematic (A) and (B) which show the example of the washing | cleaning-liquid injection by the same washer nozzle.

Explanation of symbols

1 washer nozzle,
2 injection port,
3 supply section, 3a supply flow path,
4 nozzle body, 4a injection flow path,
4b inner wall,
5 heads,
6 chips, 6a oscillator circuit,
6b channel inlet,
6c, 6d island,
7 Diffusion suppression jet,
8 Diffusion jet.

Claims (2)

A cleaning liquid is jetted from an injection port in a state where the cleaning liquid oscillates left and right on a glass of a vehicle, and includes a supply unit provided with a cleaning liquid supply channel, and a nozzle body having an injection channel communicating with the supply channel In the washer nozzle in which the tip having the oscillation circuit for the cleaning liquid is fixedly disposed in the internal space of the nozzle body,
In order to inject the cleaning liquid toward the glass, the injection port of the nozzle body at the end of the injection flow path is a diffusion injection port for the oscillated cleaning liquid, and diffusion suppression in which the cleaning liquid is injected while suppressing the oscillation property It is composed of multiple injection ports with the injection port,
Washer nozzle characterized by The diffusion suppressing injection port has a round or rectangular cross-sectional shape,
The washer nozzle according to claim 1.

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