JP2002067887A - Variable jet direction diffusion nozzle and liquid jet device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a diffusion nozzle provided on, e.g. a jet device diffusing and jetting washing fluid on a window screen of an automobile capable of easily changing jet angles. SOLUTION: A jet direction variable diffusion nozzle 1 includes a feed back flow pass vibrating and diffusing liquid from a nozzle jet hole in an inner flow pass of the nozzle and a spherical part 6 capable of changing a jet direction of the nozzle in a nozzle base part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, a diffusion nozzle provided in an injection device for diffusing a cleaning liquid onto a windshield of an automobile and injecting the same, and a liquid injection device equipped with the same.

[0002]

2. Description of the Related Art Conventionally, as a diffusion nozzle for injecting a liquid such as a cleaning liquid to an object to be ejected, feedback nozzles 10 are provided as shown in FIG. For example, there is known an apparatus in which a cleaning liquid is sprayed on a windshield of an automobile (Japanese Patent Publication No. 59-9).
378).

[0003] This diffusion nozzle is for preventing liquid from being wiped by a wiper or the like by reciprocatingly oscillating and ejecting a liquid in a wide-angle range and uniformly dispersing it in a fan shape.

[0004]

However, since the diffusion nozzle is provided to be fixed to a washer mounting portion of an automobile, for example, the injection range of a cleaning liquid or the like is limited to a fixed range. I will. Also,
When the diffusion nozzle is manufactured by a mold, it is difficult to integrally form the feedback flow path and the cost is increased. The jetting direction variable diffusion nozzle and the liquid jetting device according to the present invention are proposed to solve such a problem.

[0005]

SUMMARY OF THE INVENTION The gist of the present invention for solving the above-mentioned problems of the variable injection direction diffusion nozzle according to the present invention is to provide a feedback flow path for vibrating and diffusing a liquid from the nozzle orifice into the internal flow path of the nozzle. And having a spherical portion at the nozzle base that can change the jetting direction of the nozzle.

The above-mentioned nozzle is formed so as to be divided into upper and lower parts along the longitudinal direction, and one of the nozzles has no liquid flow path.

The gist of the liquid ejecting apparatus according to the present invention is that a liquid supply flow path is provided in a nozzle body and a spherical mounting portion formed on a liquid ejecting port side for mounting a spherical portion of a jetting direction variable diffusion nozzle. Is mounted with the jetting direction variable diffusion nozzle.

According to the jetting direction variable diffusion nozzle according to the present invention, the jetted liquid is self-oscillated and diffused in the lateral direction, and the direction of the nozzle itself can be changed by a direction changing device. Will be extended over a wide range.

In addition, for example, a single liquid ejecting apparatus provided with the jetting direction variable diffusion nozzle can eject the cleaning liquid onto substantially the entire surface of the windshield.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a jetting direction variable diffusion nozzle 1 and a liquid jetting device 2 according to the present invention will be described with reference to the drawings.

As shown in FIG. 1, the jetting direction variable diffusion nozzle 1 has feedback channels 4 and 5 for vibrating and diffusing liquid from a nozzle 3 of the nozzle in an internal channel 1a of the nozzle. The nozzle base 6a on the opposite side of the injection direction variable diffusion nozzle 1 port 3 has a sphere 6 that can change the injection direction of the nozzle.

The nozzle base 6a is provided with a supply port 7 through which a liquid is supplied. The injection direction variable diffusion nozzle 1 is formed of a synthetic resin nozzle divided into upper and lower parts along its longitudinal direction.
a and the lower oscillation nozzle 8b are separate bodies.

As shown in FIG. 2, the one upper lid nozzle 8a has no liquid flow path in the main body. As shown in FIGS. 3 and 4, the lower oscillation nozzle 8b has
Supply port 7, internal flow path 1a, feedback flow paths 4, 5,
The nozzle 3 is provided with a required groove depth.

By combining the upper lid nozzle 8a and the lower oscillating nozzle 8b with a joining means such as welding, the jetting direction variable diffusion nozzle 1 of the present invention is completed as shown in FIG.

The jetting direction variable diffusion nozzle 1 is mounted on a liquid jetting device 2. In the liquid ejecting apparatus 2, as shown in FIG. 6, a liquid supply flow path 2b is provided in a nozzle body 2a, and a spherical portion 6 of the jetting direction variable diffusion nozzle 1 is provided.
A spherical mounting portion 2c is formed on the liquid ejection port side for mounting the.

The liquid ejecting apparatus 2 equipped with the jetting direction variable diffusion nozzle 1 is mounted, for example, in front of a windshield 9 of an automobile as shown in FIG. The liquid ejecting apparatus 2 is connected to a cleaning liquid tank and a supply pump by a supply pipe (not shown), and the cleaning liquid is jetted to the windshield 9 and the like.

The cleaning liquid is pressure-fed from the cleaning liquid tank to the liquid supply passage 2b of the nozzle body 2a by the supply pump, and as shown in FIG.
From the supply port 7, and is ejected from the main nozzle 7a to form an attached jet along the side wall 1b, and is jetted to the outside through the throat 1c toward the side wall 1d of the injection port 3. Then, a part of the attached jet flows into the control port 1e in the side wall 1b, and is sent from the feedback channel 4 to the control nozzle 1f to be a control flow.

By the control flow from the control nozzle 1f, the main jet leaves the side wall 1b and adheres to the opposite side wall 1g to become an attached flow. The main jet is switched to the side wall 1b by the control flow from the feedback flow channel 5 due to a part of the adhesion flow, and the cleaning liquid self-oscillates by repeating this.

In this way, the spraying direction variable diffusion nozzle 1 not only uniformly diffuses and spreads the windshield or the like, but also, as shown in FIG. By changing the ejection range of the liquid ejection device 2 by changing the ejection axis 2d up, down, left, and right with a direction changing device or the like, the cleaning liquid can be ejected to substantially the entire surface of the windshield 9.

[0020]

As described above, the injection direction variable diffusion nozzle according to the present invention has a feedback flow path for vibrating and diffusing liquid from the nozzle of the nozzle in the internal flow path of the nozzle, and a nozzle base. Since it has a spherical portion that can change the jetting direction of the nozzle, it has an excellent effect that the liquid can be oscillated and diffused and jetted, and the jetting direction itself can be changed to jet the liquid over a wide range. .

In the liquid ejecting apparatus, the liquid supply flow path is provided in the nozzle body, and the ejecting direction is provided on a spherical mounting portion formed on the liquid ejecting port side for mounting the spherical portion of the ejecting direction variable diffusion nozzle. Since the variable diffusion nozzle is mounted, an excellent effect that the liquid can be jetted over a wide range is exhibited.

The jetting direction variable diffusion nozzle is formed so that the nozzle is divided into upper and lower parts along the longitudinal direction, and one of the nozzles has no liquid flow path.
In manufacturing with a mold, an excellent effect is obtained in that the design of the mold is facilitated and the jetting direction variable diffusion nozzle can be manufactured at low cost.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a jetting direction variable diffusion nozzle according to the present invention.

FIG. 2 is a plan view of an upper lid nozzle in the injection direction variable diffusion nozzle according to the present invention.

FIG. 3 is a plan view of a lower oscillation nozzle in the jetting direction variable diffusion nozzle according to the present invention.

FIG. 4 is a side view of a lower oscillation nozzle in the jetting direction variable diffusion nozzle according to the present invention.

FIG. 5 is a perspective view of a jetting direction variable diffusion nozzle according to the present invention.

FIG. 6 is a side view showing a part of the liquid ejecting apparatus according to the present invention in cross section.

FIGS. 7A and 7B are explanatory views (a) and (b) showing a use state of the liquid ejecting apparatus according to the present invention.

FIG. 8 is a sectional view of a liquid jet nozzle according to a conventional example.

[Explanation of symbols]

1 injection direction variable diffusion nozzle, 1a internal flow path, 1b,
1g Side wall, 1c Throat, 1d Side wall of spout, 1e
Control port, 1f control nozzle, 2 liquid ejector,
2a Nozzle body, 2b Liquid supply channel, 2c Spherical mounting part, 3 nozzle, 4,5 Feedback channel, 6
Spherical part, 7 supply port, 7a main nozzle, 8a upper lid nozzle, 8b lower oscillation nozzle, 9 windshield.

Claims (3)

[Claims] An internal flow path of a nozzle has a feedback flow path for vibrating and diffusing a liquid from a nozzle of the nozzle, and a spherical body capable of changing a jetting direction of the nozzle at a base of the nozzle. Spray direction variable diffusion nozzle. 2. A liquid supply flow path is provided in a nozzle body, and the injection direction variable diffusion nozzle is mounted on a spherical mounting portion formed on a liquid injection port side for mounting a spherical portion of the injection direction variable diffusion nozzle. A liquid ejecting apparatus. 3. The jetting direction variable diffusion nozzle according to claim 1, wherein the nozzle is formed so as to be vertically divided into two along the longitudinal direction, and one of the nozzles has no liquid flow path. .