JP2008018847A

JP2008018847A - Vehicular washer nozzle

Info

Publication number: JP2008018847A
Application number: JP2006192589A
Authority: JP
Inventors: Hideki Mukai; 英樹向井; Kentaro Tada; 健太郎多田
Original assignee: TADA SEISAKUSHO KK
Current assignee: TADA SEISAKUSHO KK
Priority date: 2006-07-13
Filing date: 2006-07-13
Publication date: 2008-01-31

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular washer nozzle with a simple structure and less pressure loss, capable of self-oscillating a washing liquid similarly to a conventional screen disc type nozzle to jet it as a fan-like diffusion flow and enlarging a diffusion range. <P>SOLUTION: The vehicular nozzle is constituted by a feeding port 12 fed with the washing liquid from a tank (not shown) for storing the washing liquid by a pump; an oscillation chamber 13 of an approximately U shape cross section left from the feeding port and having an enlarged opening; flowing passages 14, 14 branched from the feeding port 12 to right and left sides, extending to both sides of the oscillation chamber 13, connected to the opening of the oscillation chamber 13 and flowing-in the washing liquid from the feeding port 12 to the oscillation chamber 13; a diffusion jetting port 15 continuously formed on the oscillation chamber 13 and enlarged toward an outlet; and a splitter 16 arranged on a central part of the diffusion jetting outlet 15 and forming a tapered shape of cross section toward a downstream. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、車両のウインドシールド・ウォッシャー装置に設けられるウォッシャノズルに関する。 The present invention relates to a washer nozzle provided in a windshield washer device of a vehicle.

車両のフロントガラス等のウインドガラスに洗浄液を噴射するウォッシャー装置のウォッシャノズルに関しては、下記特許文献１に開示されるフルイディスク式ノズルがよく知られている。このノズルは、図１に示されるように、流路１に連続して形成される発振室２と、該発振室２から左右に分岐して形成されるフィードバック流路３、３と、発振室２に連続して形成される拡散噴射口４とからなり、流路１から発振室２に供給された洗浄液の一部をフィードバック流路３、３を経て発振室２に戻し、これにより発振室２を流れる洗浄液を自励発振させて拡散噴射口４より扇状の拡散流として噴射させることができるようにしている。
特公昭６３−５７６４１号 As a washer nozzle of a washer device for injecting a cleaning liquid onto a windshield such as a windshield of a vehicle, a fluid disk type nozzle disclosed in the following Patent Document 1 is well known. As shown in FIG. 1, the nozzle includes an oscillation chamber 2 formed continuously with the flow channel 1, feedback flow channels 3 and 3 formed by branching left and right from the oscillation chamber 2, and an oscillation chamber. 2, a part of the cleaning liquid supplied from the flow path 1 to the oscillation chamber 2 is returned to the oscillation chamber 2 via the feedback flow paths 3 and 3. The cleaning liquid flowing through the nozzle 2 is self-excited and can be ejected as a fan-shaped diffusion flow from the diffusion injection port 4.
JP-B 63-57641

本発明は、図１に示す従来のフルイディスク式ノズルと同様に洗浄液を自励発振させて扇状の拡散流として噴射させることができ、構造が簡単で、圧力損失の少ない車両用ウォッシャノズルを提供することを目的とする。 The present invention provides a vehicle washer nozzle having a simple structure and low pressure loss, which can oscillate the cleaning liquid in a self-oscillation manner and spray it as a fan-like diffused flow in the same manner as the conventional fluid disk type nozzle shown in FIG. The purpose is to do.

本発明者らは、実験により図１に示すフルイディスク式ノズルにおいて、発振室２を流路１に連続して形成しなくても発振室内の洗浄液が自励発振して拡散噴射口４より扇状の拡散流として噴射すること、更に拡散噴射口にスプリッタを配置すると、拡散流が分離されて拡散範囲が拡がること等を見出した。 In the fluid disk type nozzle shown in FIG. 1, the inventors of the present invention conducted a self-excited oscillation of the cleaning liquid in the oscillation chamber and formed a fan shape from the diffusion injection port 4 without forming the oscillation chamber 2 continuously with the flow path 1. It has been found that when a splitter is disposed at the diffusion injection port, the diffusion flow is separated and the diffusion range is expanded.

本発明は、この知見に基づいてなされたもので、請求項１に係わる発明は、タンクから洗浄液が供給される供給口と、発振室と、前記供給口から左右に分岐して発振室の両側に延び、発振室に接続されて、洗浄液を供給口から発振室に流入させる流路と、前記発振室に連続して形成され、出口に向って拡開する拡散噴射口とを有し、前記各流路からそれぞれ発振室に個別に流入した洗浄液を発振室内で自励発振させて拡散噴射口より拡散流として噴射することを特徴とする。 The present invention has been made based on this finding. The invention according to claim 1 is directed to a supply port to which a cleaning liquid is supplied from a tank, an oscillation chamber, and both sides of the oscillation chamber by branching left and right from the supply port. Extending to the oscillation chamber, having a flow path for allowing the cleaning liquid to flow into the oscillation chamber from the supply port, and a diffusion injection port formed continuously from the oscillation chamber and expanding toward the outlet, The cleaning liquid individually flowing into the oscillation chamber from each flow path is self-excited in the oscillation chamber and is ejected as a diffusion flow from the diffusion ejection port.

請求項２に係わる発明は、請求項１に係わる発明において、拡散噴射口に拡散流を分離させるスプリッタを配置したことを特徴とし、
請求項３に係わる発明は、請求項２に係わる発明において、スプリッタが下流に向って断面先細り状をなすことを特徴とする。 The invention according to claim 2 is characterized in that, in the invention according to claim 1, a splitter for separating the diffusion flow is arranged at the diffusion injection port,
The invention according to claim 3 is the invention according to claim 2, characterized in that the splitter has a tapering cross section toward the downstream.

請求項１に係わる発明によると、供給口と発振室を直接接続しなくても、両流路から個別に発振室に流入する洗浄液がそれぞれ発振室内で渦流を発生して自励発振するようになり、拡散噴射口から扇状の拡散流として噴射されるが、洗浄液を自励発振させるのに、供給口と発振室を接続する流路を有しない分、図１に示す従来のフルイディスク式ノズルに比べ構成が簡単となり、また構成が簡単となることにより圧力損失が少なくなり、噴出流が増大する。 According to the first aspect of the present invention, even if the supply port and the oscillation chamber are not directly connected, the cleaning liquid individually flowing into the oscillation chamber from both flow paths generates a vortex in the oscillation chamber and self-oscillates. 1 is ejected as a fan-like diffusion flow from the diffusion ejection port, but the conventional fluid disk type nozzle shown in FIG. 1 is not provided for the self-oscillation of the cleaning liquid because it does not have a flow path connecting the supply port and the oscillation chamber. Compared to the above, the configuration is simple, and the simple configuration reduces pressure loss and increases the jet flow.

請求項２に係わる発明によると、拡散噴射口より噴射する洗浄液の拡散範囲を更に広げることができる。 According to the second aspect of the present invention, the diffusion range of the cleaning liquid sprayed from the diffusion spray port can be further expanded.

図２に示すような断面形状のスプリッタ６を拡散噴射口７に配置した場合、拡散流が分離してそれぞれの拡散範囲はθ_１及びθ_２となり、その和θ_１+θ_２は、スプリッタ６を設けない場合の図１に示す拡散範囲γに比べ大きくなるが、中央部の拡散範囲θ_１とθ_２の間に洗浄液が噴射されない範囲θ_３が生ずる。これに対し請求項３に係わる発明のように、スプリッタが下流に向って断面先細り状をなしていると、図３に示すように分離した拡散範囲が接するか、或いは部分的に重なるようになり、中央部に洗浄液が噴射されない範囲が生じなくなる。なお、この場合でも、洗浄液の拡散範囲θは、スプリッタ１６を設けない場合の拡散範囲γに比べ、θ＞γとなる。 When the splitter 6 having a cross-sectional shape as shown in FIG. 2 is disposed at the diffusion injection port 7, the diffusion flow is separated and the respective diffusion ranges become θ ₁ and θ ₂ , and the sum θ ₁ + θ ₂ is the splitter 6. 1 is larger than the diffusion range γ shown in FIG. 1, but a range θ ₃ in which the cleaning liquid is not sprayed is generated between the diffusion ranges θ ₁ and θ _{2 in} the central portion. On the other hand, when the splitter has a tapered cross section toward the downstream as in the invention according to claim 3, the separated diffusion ranges contact or partially overlap as shown in FIG. A range in which the cleaning liquid is not sprayed in the central portion does not occur. Even in this case, the diffusion range θ of the cleaning liquid is θ> γ compared to the diffusion range γ when the splitter 16 is not provided.

以下、本発明の実施形態のウォッシャノズルについて図面により説明する。
図面に示すウォッシャノズル１１は、洗浄液を入れたタンク（図示しない）から洗浄液がポンプにより供給される供給口１２と、該供給口１２より離間し、開口を広げた略Ｕ形断面の発振室１３と、前記供給口１２から左右に分岐して発振室１３の両側に延び、発振室１３の開口に接続されて、供給口１２から洗浄液を発振室１３に流入させる流路１４、１４と、前記発振室１３に連続して形成され、出口に向って拡開する拡散噴出口１５と、拡散噴射出口１５の中央部に配置され、下流に向って断面先細り状をなすスプリッタ１６とからなっている。 Hereinafter, a washer nozzle according to an embodiment of the present invention will be described with reference to the drawings.
The washer nozzle 11 shown in the drawing includes a supply port 12 through which a cleaning liquid is supplied from a tank (not shown) containing a cleaning liquid by a pump, and an oscillation chamber 13 having a substantially U-shaped cross section spaced apart from the supply port 12 and having an enlarged opening. Flow paths 14 and 14 that branch from the supply port 12 to the left and right, extend to both sides of the oscillation chamber 13, are connected to openings of the oscillation chamber 13, and allow the cleaning liquid to flow into the oscillation chamber 13 from the supply port 12; A diffusion jet 15 formed continuously in the oscillation chamber 13 and expanding toward the outlet, and a splitter 16 disposed at the center of the diffusion jet 15 and having a tapered cross section toward the downstream. .

本実施形態のウォッシャノズル１１によると、拡散噴出口１５から洗浄液の拡散流がスプリッタ１６で分離されてそれぞれ扇状に噴出し、ウインドガラスに部分的に重なって吹き付けられるようになる。 According to the washer nozzle 11 of the present embodiment, the diffusing flow of the cleaning liquid is separated from the diffusion jet outlet 15 by the splitter 16 and ejected in a fan shape, and is blown partially overlapping the wind glass.

実験例１
東レ株式会社製のポリブチレンテレフタレートＰＢＴ、５２０１×１０Ｂにより成形し、噴射口１５の角度αが６０°、幅Ｄ＝２．９８ｍｍ、スプリッタ１６の厚みｄが０．４ｍｍ、角度βが５°、ａ＝２．５ｍｍ、ｂ＝０．８ｍｍ、ｃ＝０．６ｍｍの図４に示すウォッシャブルノズル１１を用い、マツダ株式会社製のウォッシャー用洗浄液をポンプで１１８ｋｐａに加圧して１８５ｃｃ／１０ｓｅｃで噴射した。その結果、図３に示すように拡散噴射口１５から洗浄液が自励発振して蛇行しながら拡散し、スプリッタ１６により分離して拡散される拡散流の拡散角度の和は６５°となった。 Experimental example 1
Molded with polybutylene terephthalate PBT, 5201 × 10B manufactured by Toray Industries, Inc., the angle α of the injection port 15 is 60 °, the width D = 2.98 mm, the thickness d of the splitter 16 is 0.4 mm, and the angle β is 5 °. Using the washerable nozzle 11 shown in FIG. 4 with a = 2.5 mm, b = 0.8 mm, and c = 0.6 mm, a washer cleaning solution manufactured by Mazda Co., Ltd. was pressurized to 118 kpa with a pump and sprayed at 185 cc / 10 sec. . As a result, as shown in FIG. 3, the cleaning liquid self-oscillates from the diffusion injection port 15 and diffuses while meandering, and the sum of the diffusion angles of the diffusion flows separated and diffused by the splitter 16 is 65 °.

実験例２
実験例１のスプリッタ１６の角度βを１０°とする以外は実験例１と同じウォッシャノズル１１を用い、実験例１と同じ条件で洗浄液を噴射した。その結果、拡散角度の和θ_１＋θ_２＝５５°となったが、実験例１では噴射口から４００ｍｍ離れた着水面で拡散流が重ならなかったのに対し、実験例２では重合した。 Experimental example 2
The cleaning liquid was sprayed under the same conditions as in Experimental Example 1, using the same washer nozzle 11 as in Experimental Example 1 except that the angle β of the splitter 16 in Experimental Example 1 was set to 10 °. As a result, the sum of the diffusion angles was θ ₁ + θ ₂ = 55 °. In Experimental Example 1, the diffusion flow did not overlap on the landing surface 400 mm away from the injection port, whereas in Experimental Example 2, polymerization occurred.

実験例３
実験例１のスプリッタ１６を省く以外は実験例１と同じウォッシャノズル１１を用い、実験例１と同じ条件で洗浄液を噴射した。その結果、蛇行しながら拡散することに変わりはなかったが、拡散角度は３０°となった。 Experimental example 3
The washing liquid was sprayed under the same conditions as in Experimental Example 1 using the same washer nozzle 11 as in Experimental Example 1 except that the splitter 16 of Experimental Example 1 was omitted. As a result, there was no change in diffusion while meandering, but the diffusion angle was 30 °.

本発明のウォッシャノズルは、車両、とくに自動車のウィンドシールド装置に用いられる。 The washer nozzle of the present invention is used in a windshield device of a vehicle, particularly an automobile.

従来のウォッシャー装置のウォッシャノズルの平面図。The top view of the washer nozzle of the conventional washer apparatus. スプリッタを備えた噴出口の拡大平面図。The enlarged plan view of the jet nozzle provided with the splitter. 本発明に係わるスプリッタ噴出口の拡大平面図。The enlarged plan view of the splitter outlet concerning this invention. 本発明に係わるウォッシャノズルの平面図。The top view of the washer nozzle concerning this invention.

符号の説明Explanation of symbols

１１・・ウォッシャノズル
１２・・供給口
１３・・発振室
１４・・流路
１５・・拡散噴出口
１６・・スプリッタ 11. Washer nozzle 12 Supply port 13 Oscillation chamber 14 Flow path 15 Diffusion outlet 16 Splitter

Claims

タンクから洗浄液が供給される供給口と、発振室と、前記供給口から左右に分岐して発振室の両側に延び、発振室に接続されて、洗浄液を供給口から発振室に流入させる流路と、前記発振室に連続して形成され、出口に向って拡開する拡散噴射口とを有し、前記各流路からそれぞれ発振室に個別に流入した洗浄液を発振室内で自励発振させて拡散噴射口より拡散流として噴射することを特徴とする車両用ウォッシャノズル。 A supply port for supplying the cleaning liquid from the tank, an oscillation chamber, a flow path branched from the supply port to the left and right, extending to both sides of the oscillation chamber, connected to the oscillation chamber, and flowing into the oscillation chamber from the supply port And a diffusion jet formed continuously in the oscillation chamber and expanding toward the outlet, and the cleaning liquid individually flowing into the oscillation chamber from each flow path is caused to self-oscillate in the oscillation chamber. A washer nozzle for a vehicle, which is jetted as a diffused flow from a diffusion jet port.

拡散噴射口に拡散流を分離させるスプリッタを配置したことを特徴とする請求項１記載の車両用ウォッシャノズル。 The vehicle washer nozzle according to claim 1, wherein a splitter for separating the diffusion flow is disposed at the diffusion injection port.

前記スプリッタが下流に向って断面先細り状をなすことを特徴とする請求項２記載の車両用ウォッシャノズル。 The vehicle washer nozzle according to claim 2, wherein the splitter has a tapered cross section toward the downstream.