JP2011102056A - Cleaning device of vehicle lighting fixture - Google Patents

Cleaning device of vehicle lighting fixture Download PDF

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JP2011102056A
JP2011102056A JP2009257017A JP2009257017A JP2011102056A JP 2011102056 A JP2011102056 A JP 2011102056A JP 2009257017 A JP2009257017 A JP 2009257017A JP 2009257017 A JP2009257017 A JP 2009257017A JP 2011102056 A JP2011102056 A JP 2011102056A
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valve
cleaning liquid
cleaning
pressure
cylinder
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Hiroshi Sunaga
浩 須長
Go Asaba
剛 浅羽
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Stanley Electric Co Ltd
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Stanley Electric Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a cleaning device of a vehicle lighting fixture capable of stably injecting a predetermined quantity of cleaning liquid by always surely opening a valve while attaining miniaturization. <P>SOLUTION: This cleaning device of the vehicle lighting fixture is formed by molding a valve case 7 for storing a check valve mechanism in a flat elliptic cylindrical shape by constituting the check valve mechanism for opening-closing the valve 8 by pressure of the cleaning liquid independently of a cylinder for receiving supply of the cleaning liquid. A pressure receiving surface 8B is formed on both sides of a circular seating surface 8A of the valve 8 for constituting a check valve. A stopper part for regulating its opening by abutting on the valve 8 is arranged in a valve guide for slidably holding the valve 8. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、ヘッドランプ等の車両用灯具に洗浄液を噴射してその表面を洗浄するための洗浄装置に関するものである。   The present invention relates to a cleaning apparatus for spraying a cleaning liquid onto a vehicle lamp such as a headlamp to clean the surface thereof.

車両の例えばヘッドランプの前面が埃や泥等の付着によって汚れると光量不足を招く可能性があるため、必要に応じてヘッドランプに向かって洗浄液を噴射して該ヘッドランプの表面を洗浄する洗浄装置がフロントバンパの裏側に設置されている。この洗浄装置は、洗浄液が供給されるシリンダと、該シリンダ内に摺動可能に嵌挿されたピストンと、洗浄液の圧力によって流路を開閉するバルブと該バルブを閉じ方向に付勢するバネを有するチェックバルブ機構を備え、ポンプによって昇圧された洗浄液の圧力によって前記バルブを前記バネの付勢力に抗して押し開いて洗浄液を噴射ノズルから車両用灯具に向けて噴射するよう構成されている（例えば、特許文献１参照）。   For example, if the front surface of a headlamp of a vehicle becomes dirty due to dust, mud, or the like, the amount of light may be insufficient. Therefore, cleaning is performed by spraying a cleaning liquid toward the headlamp as necessary to clean the surface of the headlamp. The device is installed behind the front bumper. The cleaning device includes a cylinder to which cleaning liquid is supplied, a piston slidably fitted in the cylinder, a valve that opens and closes a flow path by the pressure of the cleaning liquid, and a spring that biases the valve in a closing direction. The check valve mechanism is provided, and is configured to inject the cleaning liquid from the injection nozzle toward the vehicle lamp by pushing the valve against the biasing force of the spring by the pressure of the cleaning liquid boosted by the pump ( For example, see Patent Document 1).

斯かる洗浄装置においては、非洗浄時にはノズルがフロントバンパの裏側に格納されており、ヘッドランプを洗浄する際には洗浄液の圧力によって噴射ノズルがフロントバンパに形成された開口部から車両前方へと突出し、洗浄液の圧力が所定値以上に高くなると、チェックバルブ機構のバルブが開いて洗浄液が噴射ノズルへと供給され、噴射ノズルに開口する噴射口から洗浄液がヘッドランプに向かって噴射され、ヘッドランプの前面に付着した埃や泥等が除去される。そして、ヘッドランプの洗浄が終了すると、噴射ノズルはスプリング等の付勢手段によってフロントバンパの裏側の格納位置に戻されて格納される。   In such a cleaning apparatus, the nozzle is stored behind the front bumper when not cleaning, and when the headlamp is cleaned, the injection nozzle is moved forward from the opening formed in the front bumper by the pressure of the cleaning liquid. When the pressure of the cleaning liquid rises above a predetermined value, the valve of the check valve mechanism opens and the cleaning liquid is supplied to the ejection nozzle, and the cleaning liquid is ejected from the ejection port that opens to the ejection nozzle toward the headlamp. Dust, mud, etc. adhering to the front surface are removed. When the cleaning of the headlamp is completed, the spray nozzle is returned to the storage position on the back side of the front bumper by the biasing means such as a spring and stored.

ところで、洗浄装置を車体に搭載する場合、その設置スペースが小さい方がレイアウト的に有利であるため、該洗浄装置には小型化が要求されるが、従来はチェックバルブ機構をシリンダ内に収容する構成が採用されていたため、外形が大きくなって小型化が困難であるという問題があった。   By the way, when the cleaning device is mounted on the vehicle body, the smaller installation space is advantageous in terms of layout. Therefore, the cleaning device is required to be downsized. Conventionally, the check valve mechanism is accommodated in the cylinder. Since the configuration was adopted, there was a problem that it was difficult to reduce the size because the outer shape was large.

そこで、チェックバルブ機構をシリンダに対して独立に構成する提案がなされる。ここで、従来のチェックバルブ機構を図８及び図９に示す。   Therefore, a proposal has been made to configure the check valve mechanism independently of the cylinder. A conventional check valve mechanism is shown in FIGS.

即ち、図８は従来のチェックバルブ機構要部の平断面図、図９は図８のＣ−Ｃ線断面図であり、バルブケース１０７は図９に示すように偏平な楕円筒状に形成されている。そして、図８に示すように、バルブケース１０７内にはバルブ１０８と、該バルブ１０８を摺動可能に保持するバルブガイド１０９と、バルブ１０８を閉じ方向（弁座１１４に着座する方向に付勢するバネ１１０が収容されている。   That is, FIG. 8 is a plan sectional view of the main part of a conventional check valve mechanism, FIG. 9 is a sectional view taken along the line CC of FIG. 8, and the valve case 107 is formed in a flat elliptic cylinder shape as shown in FIG. ing. Then, as shown in FIG. 8, a valve 108, a valve guide 109 for slidably holding the valve 108, and a valve 108 are urged in a closing direction (a direction in which the valve 108 is seated). The spring 110 is accommodated.

上述のように構成されたチェックバルブ機構において洗浄液の圧力はバルブ１０８の円形の着座面（受圧面）１０８Ａに作用するが、この圧力が所定値を超えてバルブ１０８に作用する押圧力がバネ１１０の付勢力（バネ力）よりも大きくなるとバルブ１０８が図８に示すように弁座１１４から離れて開くため、洗浄液が不図示の噴射ノズルへと供給されて噴射に供せられる。   In the check valve mechanism configured as described above, the pressure of the cleaning liquid acts on the circular seating surface (pressure receiving surface) 108A of the valve 108. The pressure acting on the valve 108 when this pressure exceeds a predetermined value is the spring 110. Since the valve 108 opens away from the valve seat 114 as shown in FIG. 8, the cleaning liquid is supplied to an injection nozzle (not shown) and used for injection.

特許第３０２８４５４号公報Japanese Patent No. 3028454

ところが、図８及び図９に示すような従来の洗浄装置においては、バルブケース１０７を偏平な楕円筒状としたため、該バルブケース１０７内に収容されるバルブ１０８の外径を円筒のバルブケース内に収容されるものに比して大きくすることができない。このため、バルブの１０８の受圧面積が不足し、バネ１１０のバネ力のバラツキ等によってバルブ１０８が図８に示すように開き切らず、洗浄液の噴射量が設計値に対して不足するという問題が発生する。   However, in the conventional cleaning apparatus as shown in FIGS. 8 and 9, since the valve case 107 has a flat oval cylindrical shape, the outer diameter of the valve 108 accommodated in the valve case 107 is set in the cylindrical valve case. It cannot be made larger than what is housed in the house. For this reason, there is a problem that the pressure receiving area of the valve 108 is insufficient, the valve 108 is not fully opened as shown in FIG. 8 due to variations in the spring force of the spring 110, and the injection amount of the cleaning liquid is insufficient with respect to the design value. appear.

上記問題を解決するために洗浄液の圧力を上げてバルブ１０８を強引に開けようとすると、他の箇所において洗浄液が漏れる可能性がある。   If the pressure of the cleaning liquid is raised to forcibly open the valve 108 to solve the above problem, the cleaning liquid may leak at other locations.

本発明は上記問題に鑑みてなされたもので、その目的とする処は、小型化を図りつつ、バルブを常に確実に開いて所定量の洗浄液を安定的に噴射することができる車両用灯具の洗浄装置を提供することにある。   The present invention has been made in view of the above problems, and the object of the present invention is to provide a vehicular lamp that can always be surely opened and a predetermined amount of cleaning liquid can be stably ejected while achieving downsizing. It is to provide a cleaning device.

上記目的を達成するため、請求項１記載の発明は、洗浄液の圧力によってバルブを開閉するチェックバルブ機構を、洗浄液の供給を受けるシリンダから独立して構成し、該チェックバルブ機構を収容するバルブケースを扁平な楕円筒形状に成形して成る車両用灯具の洗浄装置において、前記チェックバルブを構成するバルブの円形の着座面の両側に受圧面を形成したことを特徴とする。   In order to achieve the above object, according to the first aspect of the present invention, a check valve mechanism that opens and closes a valve by the pressure of a cleaning liquid is configured independently of a cylinder that receives supply of the cleaning liquid, and a valve case that houses the check valve mechanism In the vehicular lamp cleaning apparatus formed by forming a flat oval cylindrical shape, pressure receiving surfaces are formed on both sides of a circular seating surface of the valve constituting the check valve.

請求項２記載の発明は、請求項１記載の発明において、前記バルブを摺動可能に保持するバルブガイドに、前記バルブに当接してその開度を規制するストッパ部を設けたことを特徴とする。   The invention according to claim 2 is characterized in that, in the invention according to claim 1, the valve guide for slidably holding the valve is provided with a stopper portion that contacts the valve and regulates its opening degree. To do.

請求項１記載の発明によれば、偏平な楕円筒形状のバルブケース内に収容されたバルブの円形の着座面の両側に受圧面を形成したため、閉じ状態にあるバルブの着座面に洗浄液の圧力が作用して該バルブが開き始めると、洗浄液の圧力がバルブの着座面の両側に形成された受圧面にも作用するため、この受圧面に作用する圧力による力がバルブを押し開く力に付加される。このため、バルブは大きな力で開き切り、その開度が設計値に保たれることとなり、バルブケースを偏平な楕円筒形状として小型化を図りつつ、バルブを常に確実に開いて所定量の洗浄液を安定的に噴射して車両用灯具の表面を確実に洗浄することができる。又、バルブを確実に開けるために洗浄液の圧力を高める必要がなく、洗浄液の漏れ等の不具合の発生を防ぐことができる。   According to the first aspect of the present invention, since the pressure receiving surfaces are formed on both sides of the circular seating surface of the valve accommodated in the flat oval cylindrical valve case, the pressure of the cleaning liquid is applied to the seating surface of the valve in the closed state. When the valve starts to open, the pressure of the cleaning fluid also acts on the pressure receiving surfaces formed on both sides of the seating surface of the valve. Therefore, the force due to the pressure acting on the pressure receiving surface is added to the force that opens the valve. Is done. For this reason, the valve is fully opened and the opening degree is maintained at the designed value, and the valve case is made flat and elliptical cylindrical shape, and the valve is always opened to ensure a predetermined amount of cleaning liquid. Can be stably ejected to reliably clean the surface of the vehicular lamp. Further, it is not necessary to increase the pressure of the cleaning liquid in order to reliably open the valve, and it is possible to prevent problems such as leakage of the cleaning liquid.

請求項２記載の発明によれば、受圧面積の拡大によってバルブを強い力で押し開く場合、該バルブはバルブガイドのストッパ部に当接してその開度が規制されるため、該バルブの開度を設計値に保つことができ、所定量の洗浄液を安定的に噴射ノズルへと供給して車両用灯具に洗浄に供することができる。   According to the second aspect of the present invention, when the valve is pushed open with a strong force by expanding the pressure receiving area, the valve abuts against the stopper portion of the valve guide and its opening degree is regulated. Can be maintained at the design value, and a predetermined amount of cleaning liquid can be stably supplied to the injection nozzle and used for cleaning the vehicular lamp.

本発明に係る洗浄装置の側面図である。It is a side view of the washing | cleaning apparatus which concerns on this invention. 本発明に係る洗浄装置の平面図である。It is a top view of the washing | cleaning apparatus which concerns on this invention. 本発明に係る洗浄装置要部の分解斜視図である。It is a disassembled perspective view of the principal part of the washing | cleaning apparatus which concerns on this invention. （ａ），（ｂ）は本発明に係る洗浄装置のバルブの開閉動作を示す平断面図である。(A), (b) is a plane sectional view showing opening and closing operation of a valve of a cleaning device concerning the present invention. 図４（ａ）のＡ−Ａ線断面図である。It is the sectional view on the AA line of Fig.4 (a). 図４（ｂ）の要部拡大詳細図である。FIG. 5 is an enlarged detail view of a main part of FIG. 図６のＢ−Ｂ線断面図である。It is the BB sectional view taken on the line of FIG. 従来の洗浄装置のチェックバルブ機構要部の平断面図である。It is a top sectional view of the check valve mechanism principal part of the conventional washing device. 図８のＣ−Ｃ線断面図である。It is CC sectional view taken on the line of FIG.

以下に本発明の実施の形態を添付図面に基づいて説明する。   Embodiments of the present invention will be described below with reference to the accompanying drawings.

図１は本発明に係る洗浄装置の側面図、図２は同洗浄装置の平面図、図３は同洗浄装置要部の分解斜視図、図４（ａ），（ｂ）は同洗浄装置のバルブの開閉動作を示す平断面図、図５は図４（ａ）のＡ−Ａ線断面図，図６は図４（ｂ）の要部拡大詳細図、図７は図６のＢ−Ｂ線断面図である。   1 is a side view of a cleaning apparatus according to the present invention, FIG. 2 is a plan view of the cleaning apparatus, FIG. 3 is an exploded perspective view of the main part of the cleaning apparatus, and FIGS. 4 (a) and 4 (b) are views of the cleaning apparatus. FIG. 5 is a cross-sectional view taken along line AA in FIG. 4A, FIG. 6 is an enlarged detail view of the main part of FIG. 4B, and FIG. It is line sectional drawing.

本実施の形態に係る洗浄装置１は、不図示のヘッドランプの前面に向かって洗浄液を噴射して該前面を洗浄するための装置であって、不図示のフロントバンパの裏側に配置されている。尚、洗浄装置１は左右のヘッドランプに対してそれぞれ設置されているが、その構成及び作用は左右で同じであるため、以下、一方の洗浄装置１についてのみ図示及び説明する。   The cleaning device 1 according to the present embodiment is a device for spraying cleaning liquid toward the front surface of a headlamp (not shown) to clean the front surface, and is disposed on the back side of a front bumper (not shown). . Although the cleaning device 1 is installed for each of the left and right headlamps, the configuration and operation are the same on the left and right, and therefore, only one cleaning device 1 will be illustrated and described below.

図１及び図２に示す洗浄装置１は、円筒状のシリンダ２の内部に不図示のピストンを摺動可能に嵌挿し、該ピストンの先端部にシリンダ２とは独立して構成されたチェックバルブ機構３を介して左右一対の噴射ノズル４を取り付けて構成されている。   A cleaning apparatus 1 shown in FIGS. 1 and 2 includes a check valve that is slidably fitted into a cylindrical cylinder 2 and is configured to be independent of the cylinder 2 at the tip of the piston. A pair of left and right injection nozzles 4 are attached via a mechanism 3.

上記シリンダ２は、不図示のウォッシャタンクから洗浄液の供給を受けるものであって、その後端にはプラグ５が設けられており、シリンダ２の内部はプラグ５に接続された不図示の配管とその途中に設けられた不図示のポンプを介してウォッシャタンクに連通している。そして、シリンダ２の前端部外周にはブラケット６が取り付けられており、洗浄装置１は、ブラケット６を介して不図示のフロントバンパの裏側に取り付けられている。尚、図示しないが、シリンダ２とその内部に摺動可能に嵌挿されたピストンとの間には、ピストンをシリンダ２内に引き込む方向に付勢する付勢手段としてのリターンスプリングが介装されている。   The cylinder 2 is supplied with cleaning liquid from a washer tank (not shown), and a plug 5 is provided at the rear end thereof. The cylinder 2 has a pipe (not shown) connected to the plug 5 and its pipe. It communicates with the washer tank via a pump (not shown) provided in the middle. A bracket 6 is attached to the outer periphery of the front end of the cylinder 2, and the cleaning device 1 is attached to the back side of a front bumper (not shown) via the bracket 6. Although not shown, a return spring is interposed between the cylinder 2 and a piston that is slidably inserted in the cylinder 2 as a biasing means that biases the piston in a direction in which the piston is pulled into the cylinder 2. ing.

次に、洗浄装置１の内部構造を図３〜図７に基づいて説明する。   Next, the internal structure of the cleaning apparatus 1 will be described with reference to FIGS.

前記チェックバルブ機構３は、図３及び図４に示すように、バルブケース７の内部にバルブ８と、該バルブ８を摺動可能に保持するバルブガイド９と、バルブ８を閉じ方向に付勢するバネ１０を収容して構成されており、全体の横断面形状が横方向に扁平な楕円筒状とされている。   As shown in FIGS. 3 and 4, the check valve mechanism 3 includes a valve 8 inside the valve case 7, a valve guide 9 that slidably holds the valve 8, and biases the valve 8 in the closing direction. The spring 10 is accommodated, and the entire cross-sectional shape is an elliptical cylindrical shape that is flat in the horizontal direction.

上記バルブケース７は前後に２分割されたケース半体７Ａ, ７Ｂ同士を結合一体化して構成されており、一方のケース半体７Ａは、円筒部７ａと扁平な楕円筒部７ｂとを組み合わせて構成されており、楕円筒部７ｂの全周４箇所には矩形状の係合孔１１（図３には上の２つのみ図示）が形成され、楕円筒部７ｂの開口端面の一部（上部）にはＶ字状の嵌合溝１２が形成されている。そして、図４に示すように、ケース半体７Ａの円筒部７ａと楕円筒部７ｂとを仕切る壁１３の中心部には円筒状の弁座１４が形成されている。   The valve case 7 is configured by joining and integrating case halves 7A and 7B which are divided into two parts in the front and rear, and one case half 7A is formed by combining a cylindrical portion 7a and a flat elliptic cylinder portion 7b. The rectangular engagement holes 11 (only the upper two are shown in FIG. 3) are formed at four locations on the entire circumference of the elliptic cylinder portion 7b, and a part of the opening end surface of the elliptic cylinder portion 7b (see FIG. 3). A V-shaped fitting groove 12 is formed in the upper part). And as shown in FIG. 4, the cylindrical valve seat 14 is formed in the center part of the wall 13 which partitions off the cylindrical part 7a and the elliptical cylinder part 7b of case half 7A.

又、他方のケース半体７Ｂは、扁平な楕円筒部７ｃとその先端に連なる角柱部７ｄとで構成されており、楕円筒部７ｃは、外径が小さくて薄肉の小径部７ｃ１と外径が大きくて厚肉の大径部７ｃ２とで構成されている。そして、楕円筒部７ｃの小径部７ｃ１の外周の４箇所（他方のケース半体７Ａの楕円筒部７ｂに形成された係合孔１１に対応する箇所）には係合爪１５（図３には上の２つのみ図示）が突設されている。又、楕円筒部７ｃの大径部７ｃ２の小径部７ｃ１との境（段差部）の一部（他方のケース半体７Ａの楕円筒部７ｂに形成された嵌合溝１２に対応する部分）にはＶ字状の嵌合突起１６が形成されている。   The other case half 7B is composed of a flat oval cylindrical portion 7c and a rectangular column portion 7d connected to the tip of the oval cylindrical portion 7c. The oval cylindrical portion 7c has a small outer diameter and a thin small diameter portion 7c1. And a thick large-diameter portion 7c2. The engagement claws 15 (shown in FIG. 3) are provided at four locations on the outer periphery of the small diameter portion 7c1 of the elliptic cylinder portion 7c (locations corresponding to the engagement holes 11 formed in the elliptic cylinder portion 7b of the other case half 7A). (Only the upper two are shown) project. Further, a part of the boundary (step part) between the large diameter part 7c2 and the small diameter part 7c1 of the elliptic cylinder part 7c (part corresponding to the fitting groove 12 formed in the elliptic cylinder part 7b of the other case half body 7A). A V-shaped fitting projection 16 is formed on the.

更に、ケース半体７Ｂの先端部に形成された角柱部７ｄの左右には円筒部７ｅが角柱部７ｄに対して軸直角方向に形成されており、これらの円筒部７ｅにはノズルホルダ１７がそれぞれ圧入嵌合されている。そして、各ノズルホルダ１７には噴射ノズル４が上方から圧入嵌合されており、この噴射ノズル４には不図示のヘッドランプの前面に向かって開口する噴射口１８がそれぞれ形成されている。   Further, cylindrical portions 7e are formed on the left and right sides of the prism portion 7d formed at the tip of the case half 7B, and the nozzle holder 17 is formed in these cylindrical portions 7e. Each is press-fitted. Each nozzle holder 17 is press-fitted with an injection nozzle 4 from above, and each injection nozzle 4 has an injection port 18 that opens toward the front surface of a headlamp (not shown).

而して、一方のケース半体７Ａの楕円筒部７ｂを他方のケース半体７Ｂの楕円筒部７ｃの小径部７ｃ１の外周に嵌め込み、小径部７ｃ１の外周に形成された前記係合爪１５を楕円筒部７ｃに形成された前記係合孔１１に係合させれば、ケース半体７Ｂ側の嵌合突起１６がケース半体７Ａ側の嵌合溝１２に嵌合し、２つのケース半体７Ａ，７Ｂ同士が位置決めされつつ結合されて楕円筒状の１つのバルブケース７が組み立てられる。   Thus, the engaging claw 15 formed on the outer periphery of the small diameter portion 7c1 is formed by fitting the elliptic cylindrical portion 7b of one case half 7A into the outer periphery of the small diameter portion 7c1 of the elliptic cylindrical portion 7c of the other case half 7B. Is engaged with the engagement hole 11 formed in the oval cylindrical portion 7c, the fitting projection 16 on the case half 7B side is fitted into the fitting groove 12 on the case half 7A side, and the two cases The half bodies 7 </ b> A and 7 </ b> B are joined while being positioned to assemble one elliptical cylindrical valve case 7.

前記バルブ８は、円板状の弁体８ａと該弁体８ａの中心から軸直角方向に一体に延びる弁軸８ｂとで構成されており、図４に示すように、弁体８ａの弁座１４に着座する部分にはリング状のシール部材１９が組み付けられている。そして、本実施の形態においては、図７に示すように、バルブ８の弁体８ａの前面である円形の着座面８Ａの左右両側には、着座面８Ａに対して段差を設けて受圧面８Ｂが一体に形成されている。各受圧面８Ｂは、その上下面が着座面８Ａの外周の上下に外接するよう外側方に向かって水平に延び、その端面は垂直面ヲ構成しており、正面視で着座面８Ａと共に左右方向に長い矩形の投影面を形成している。   The valve 8 is composed of a disc-shaped valve body 8a and a valve shaft 8b integrally extending in the direction perpendicular to the axis from the center of the valve body 8a. As shown in FIG. 4, the valve seat of the valve body 8a A ring-shaped seal member 19 is assembled to a portion seated on the ring 14. In the present embodiment, as shown in FIG. 7, the pressure receiving surface 8B is provided with steps on the left and right sides of the circular seating surface 8A that is the front surface of the valve body 8a of the valve 8 with respect to the seating surface 8A. Are integrally formed. Each pressure-receiving surface 8B extends horizontally outward so that its upper and lower surfaces circumscribe the upper and lower sides of the outer periphery of the seating surface 8A, and its end surface constitutes a vertical surface. A long rectangular projection surface is formed.

又、前記バルブガイド９は、小径の円筒部９Ａとその先端に一体に形成された楕円板状のフランジ部９Ｂとで構成されており、円筒部９Ａの端面はバルブ８が開く際に図４（ｂ）に示すように当接してその位置を規制するストッパ部を構成している。そして、図５に示すように、フランジ部９Ｂの円筒部９Ａを境としてこれの左右には前記ノズル４に連通する三日月状の開口部９ａが形成されている。   The valve guide 9 is composed of a small-diameter cylindrical portion 9A and an elliptical plate-like flange portion 9B integrally formed at the tip thereof. The end surface of the cylindrical portion 9A is shown in FIG. As shown in (b), the stopper part which contacts and regulates the position is comprised. As shown in FIG. 5, a crescent-shaped opening 9a communicating with the nozzle 4 is formed on the left and right sides of the cylindrical portion 9A of the flange portion 9B.

更に、図４に示すように、バルブガイド９の円筒部９Ａ内には前記バルブ８の弁軸８ｂが摺動可能に嵌合しており、従って、バルブ８はバルブケース７内の中心部に前後方向（図４の左右方向）に移動可能に支持されており、該バルブ８は、前記バネ１０によって閉じ方向（弁座１４に着座する方向）に付勢されている。ここで、バネ１０は、バルブガイド９の円筒部９Ａの外周に挿通され、バルブ８の弁体８ａとバルブガイド９のフランジ部９Ｂ間に縮装されている。尚、バネ１０のバネ定数は前記リターンスプリング（不図示）のバネ定数よりも大きく設定されている。   Further, as shown in FIG. 4, the valve shaft 8 b of the valve 8 is slidably fitted in the cylindrical portion 9 </ b> A of the valve guide 9, so that the valve 8 is located at the center of the valve case 7. The valve 8 is supported so as to be movable in the front-rear direction (left-right direction in FIG. 4), and the valve 8 is urged by the spring 10 in the closing direction (direction in which the valve seat 14 is seated). Here, the spring 10 is inserted into the outer periphery of the cylindrical portion 9 </ b> A of the valve guide 9, and is contracted between the valve body 8 a of the valve 8 and the flange portion 9 </ b> B of the valve guide 9. The spring constant of the spring 10 is set larger than the spring constant of the return spring (not shown).

而して、バルブガイド９はスプリングガイドとしての機能も備えており、バルブケース７内においては、バルブガイド９は、図４に示すようにバネ１０の反力によってバルブケース７内の壁２２に押圧されて位置が固定されている。   Thus, the valve guide 9 also has a function as a spring guide. In the valve case 7, the valve guide 9 is applied to the wall 22 in the valve case 7 by the reaction force of the spring 10 as shown in FIG. The position is fixed by being pressed.

以上のように構成された洗浄装置１において、ヘッドランプの洗浄が行われない場合には、不図示のピストンはリターンスプリングの付勢力によって図１及び図２に示すようにシリンダ２内に引き込まれており、このとき、チェックバルブ機構３のバルブ８は図４（ａ）に示すようにバネ１０によって弁座１４に押圧されて閉じ状態にある。又、ノズル４は不図示のフロントバンパの裏側に格納されている。   In the cleaning apparatus 1 configured as described above, when the headlamp is not cleaned, a piston (not shown) is drawn into the cylinder 2 as shown in FIGS. 1 and 2 by the urging force of the return spring. At this time, the valve 8 of the check valve mechanism 3 is pressed against the valve seat 14 by the spring 10 as shown in FIG. The nozzle 4 is stored behind the front bumper (not shown).

而して、洗浄装置１によってヘッドランプの洗浄を行う場合には、不図示のウォッシャタンクからの洗浄液が不図示のポンプによって所定圧に昇圧されて洗浄装置１のシリンダ２へと供給される。すると、ピストンは洗浄液の圧力によってシリンダ２内を前方へと摺動し、その先端に設けられたノズル４をフロントバンパに形成された開口部（不図示）から車両前方へと押し出す。この場合、前述のようにバネ１０のバネ定数はリターンスプリングのバネ定数よりも大きく設定されているため、チェックバルブ機構３のバルブ８は図４（ａ）に示すように閉じたままであって、洗浄液はノズル４には供給されない。   Thus, when the headlamp is cleaned by the cleaning device 1, the cleaning liquid from a washer tank (not shown) is boosted to a predetermined pressure by a pump (not shown) and supplied to the cylinder 2 of the cleaning device 1. Then, the piston slides forward in the cylinder 2 by the pressure of the cleaning liquid, and pushes the nozzle 4 provided at the tip of the piston forward from the opening (not shown) formed in the front bumper. In this case, since the spring constant of the spring 10 is set larger than the spring constant of the return spring as described above, the valve 8 of the check valve mechanism 3 remains closed as shown in FIG. The cleaning liquid is not supplied to the nozzle 4.

上述のようにピストンが洗浄液の圧力によって前進した後、洗浄液の圧力が所定値を超えて上昇し、チェックバルブ機構３のバルブ８の着座面８Ａに作用する洗浄液の圧力に基づく力がバルブ１０のバネ力（付勢力）よりも大きくなると、バルブ８は図４（ｂ）及び図６に示すようにバルブガイド９に沿って前方へと移動して着座面８Ａが弁座１４から離れる。このようにバルブ８の着座面８Ａが弁座１４から離れると、洗浄液の圧力はバルブ８の着座面８Ａと受圧面８Ｂにも作用するため、バルブ８を押し開こうとする力が両受圧面８Ｂに作用する圧力による力分だけ増大し、バルブ８は大きな力で押し開かれ、バルブガイド９の円筒部９Ａの端面に形成されたストッパ部に当接してその開度が規制される。このようにバルブ８が開いてバルブガイド９の円筒部９Ａに先端に当接下状態では、洗浄液は、図４（ｂ）矢印にて示すようにバルブケース７内の流路を前方に向かって流れ、バルブガイド９のフランジ部９Ｂに形成された左右の開口部９ａを通過して左右に分岐し、左右のノズルホルダ１７から各噴射ノズル４へと供給される。そして、噴射ノズル４へと供給された洗浄液は、噴射口１８（図３参照）からヘッドランプに向かって噴射され、ヘッドランプの前面に付着した埃や泥等を洗い流す。   As described above, after the piston moves forward due to the pressure of the cleaning liquid, the pressure of the cleaning liquid rises above a predetermined value, and the force based on the pressure of the cleaning liquid acting on the seating surface 8A of the valve 8 of the check valve mechanism 3 is When it becomes larger than the spring force (biasing force), the valve 8 moves forward along the valve guide 9 as shown in FIGS. 4B and 6, and the seating surface 8 A is separated from the valve seat 14. When the seating surface 8A of the valve 8 is separated from the valve seat 14 in this way, the pressure of the cleaning liquid also acts on the seating surface 8A and the pressure receiving surface 8B of the valve 8, so that the force for pushing the valve 8 open is both pressure receiving surfaces. The valve 8 is pushed open by a large force, and is brought into contact with a stopper portion formed on the end surface of the cylindrical portion 9A of the valve guide 9 to regulate its opening degree. When the valve 8 is thus opened and in contact with the tip of the cylindrical portion 9A of the valve guide 9, the cleaning liquid moves forward in the flow path in the valve case 7 as shown by the arrow in FIG. The flow passes through the left and right openings 9 a formed in the flange portion 9 </ b> B of the valve guide 9, branches right and left, and is supplied from the left and right nozzle holders 17 to the injection nozzles 4. The cleaning liquid supplied to the jet nozzle 4 is jetted from the jet port 18 (see FIG. 3) toward the headlamp to wash away dust, mud and the like adhering to the front face of the headlamp.

以上のように、本実施の形態では、偏平な楕円筒形状のバルブケース７内に収容されたバルブ８の円形の着座面８Ａの左右両側に受圧面８Ｂを形成したため、図４（ａ）に示すように閉じ状態にあるバルブ８の着座面８Ａに洗浄液の圧力が作用して該バルブ８が開き始めると、洗浄液の圧力がバルブ８の着座面８Ａの両側に形成された受圧面８Ｂにも作用するため、この受圧面８Ｂに作用する圧力による力がバルブ８を押し開く力に付加される。このため、バルブ８は大きな力で開き切って図４（ｂ）及び図６に示すようにバルブケース９の円筒部９Ａ先端のストッパ部に当接するため、その開度が設計値に保たれることとなり、バルブケース７を偏平な楕円筒形状として当該洗浄装置１の小型化を図りつつ、バルブ８を常に確実に開いて所定量の洗浄液を噴射ノズル４から安定的に噴射してヘッドランプの前面を確実に洗浄することができる。そして、バルブ８を確実に開けるために洗浄液の圧力を高める必要がなく、洗浄液の漏れ等の不具合の発生を防ぐことができる。   As described above, in the present embodiment, the pressure receiving surfaces 8B are formed on the left and right sides of the circular seating surface 8A of the valve 8 accommodated in the flat oval cylindrical valve case 7, so that FIG. As shown, when the pressure of the cleaning liquid acts on the seating surface 8A of the valve 8 in the closed state and the valve 8 begins to open, the pressure of the cleaning liquid is also applied to the pressure receiving surfaces 8B formed on both sides of the seating surface 8A of the valve 8. In order to act, the force by the pressure which acts on this pressure receiving surface 8B is added to the force which pushes the valve 8 open. For this reason, the valve 8 is opened with a large force and comes into contact with the stopper portion at the tip of the cylindrical portion 9A of the valve case 9 as shown in FIGS. 4B and 6, so that the opening degree is kept at the design value. Accordingly, the bulb case 7 is formed in a flat elliptical cylinder shape, and the washing device 1 is reduced in size, while the bulb 8 is always opened reliably and a predetermined amount of the washing liquid is stably ejected from the ejection nozzle 4 to ensure that the headlamp is The front surface can be reliably cleaned. And in order to open the valve 8 reliably, it is not necessary to increase the pressure of the cleaning liquid, and the occurrence of problems such as leakage of the cleaning liquid can be prevented.

而して、以上のようにしてヘッドランプの洗浄が終了すると、不図示のピストンがリターンスプリングによってシリンダ２内に引き込まれるため、噴射ノズル４はフロントバンパの裏側の格納位置に戻されて格納され、チェックバルブ機構３のバルブ８は図４（ａ）に示すように再び閉じられる。   Thus, when the cleaning of the headlamp is completed as described above, a piston (not shown) is pulled into the cylinder 2 by the return spring, so that the injection nozzle 4 is returned to the storage position on the back side of the front bumper and stored. The valve 8 of the check valve mechanism 3 is closed again as shown in FIG.

尚、以上は本発明をヘッドライトの洗浄に供される洗浄装置に適用した形態について説明したが、本発明は、ヘッドライト以外の他の任意の車両用灯具の洗浄に供される洗浄装置に対しても同様に適用可能であることは勿論である。   In the above, the embodiment in which the present invention is applied to a cleaning device used for cleaning a headlight has been described. However, the present invention is applied to a cleaning device used for cleaning any other vehicle lamp other than a headlight. Of course, the present invention can be similarly applied.

１ 洗浄装置
２ シリンダ
３ チェックバルブ機構
４ 噴射ノズル
５ プラグ
６ ブラケット
７ バルブケース
７Ａ，７Ｂ ケース半体
７ａ ケース半体の円筒部
７ｂ，７ｃ ケース半体の楕円筒部
７ｃ１ 楕円筒部の小径部
７ｃ２ 楕円筒部の大径部
７ｄ ケース半体の角柱部
７ｅ 角柱部の円筒部
７ｆ 円筒部の凹球面状軸受
８ バルブ
８Ａ バルブの着座面
８Ｂ バルブの受圧面
８ａ バルブの弁体
８ｂ バルブの弁軸
９ バルブガイド
９Ａ バルブガイドの円筒部
９Ｂ バルブガイドのフランジ部
９ａ フランジ部の開口部
１０ バネ
１１ バルブケースの係合孔
１２ バルブケースの嵌合溝
１３ バルブケース内の壁
１４ バルブケースの弁座
１５ バルブケースの係合爪
１６ バルブケースの嵌合突起
１７ ノズルホルダ
１７ａ ノズルホルダの球面状嵌合部
１７ｂ ノズルホルダの円筒部
１８ 噴射ノズルの噴射口
１９ シール部材

DESCRIPTION OF SYMBOLS 1 Cleaning apparatus 2 Cylinder 3 Check valve mechanism 4 Injection nozzle 5 Plug 6 Bracket 7 Valve case 7A, 7B Case half 7a Case half cylindrical part 7b, 7c Case half elliptical cylinder part 7c1 Elliptical cylindrical part small diameter part 7c2 Large diameter portion of elliptical cylinder portion 7d Square column portion of case half 7e Cylindrical portion of square column portion 7f Concave spherical bearing of cylindrical portion 8 Valve 8A Valve seating surface 8B Valve pressure receiving surface 8a Valve valve body 8b Valve valve shaft DESCRIPTION OF SYMBOLS 9 Valve guide 9A Cylindrical part of valve guide 9B Flange part of valve guide 9a Opening part of flange part 10 Spring 11 Engagement hole of valve case 12 Fitting groove of valve case 13 Wall in valve case 14 Valve seat 15 of valve case Valve case engagement claw 16 Valve case fitting projection 17 Nozzle holder 17a Nozzle holder spherical shape Injection port 19 sealing member of the cylindrical portion 18 injection nozzle engagement portion 17b nozzle holder

Claims (2)

洗浄液の圧力によってバルブを開閉するチェックバルブ機構を、洗浄液の供給を受けるシリンダから独立して構成し、該チェックバルブ機構を収容するバルブケースを扁平な楕円筒形状に成形して成る車両用灯具の洗浄装置において、
前記チェックバルブを構成するバルブの円形の着座面の両側に受圧面を形成したことを特徴とする車両用灯具の洗浄装置。 A check valve mechanism that opens and closes a valve by the pressure of cleaning liquid is configured independently of a cylinder that receives supply of cleaning liquid, and a valve case that accommodates the check valve mechanism is formed into a flat elliptic cylinder shape. In the cleaning device,
A vehicular lamp cleaning apparatus, wherein pressure-receiving surfaces are formed on both sides of a circular seating surface of a valve constituting the check valve. 前記バルブを摺動可能に保持するバルブガイドに、前記バルブに当接してその開度を規制するストッパ部を設けたことを特徴とする請求項１記載の車両用灯具の洗浄装置。

2. The vehicle lamp cleaning apparatus according to claim 1, wherein a stopper that abuts on the valve and regulates the opening degree thereof is provided on a valve guide that slidably holds the valve.

JP2009257017A 2009-11-10 2009-11-10 Cleaning device of vehicle lighting fixture Pending JP2011102056A (en)

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Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014125057A (en) * 2012-12-26 2014-07-07 Koito Mfg Co Ltd Washing device for vehicle
JP2014125056A (en) * 2012-12-26 2014-07-07 Koito Mfg Co Ltd Washing device for vehicle
CN105984438A (en) * 2015-02-03 2016-10-05 上海海拉电子有限公司 Headlight cleaner

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0629959U (en) * 1992-09-24 1994-04-19 株式会社小糸製作所 Headlamp washer
JPH08133307A (en) * 1994-11-11 1996-05-28 Kikkoman Corp Check valve for preventing liquid leakage, and container for pouring employing the check valve
JP2003285723A (en) * 2002-03-28 2003-10-07 Asmo Co Ltd Headlamp cleaner device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0629959U (en) * 1992-09-24 1994-04-19 株式会社小糸製作所 Headlamp washer
JPH08133307A (en) * 1994-11-11 1996-05-28 Kikkoman Corp Check valve for preventing liquid leakage, and container for pouring employing the check valve
JP2003285723A (en) * 2002-03-28 2003-10-07 Asmo Co Ltd Headlamp cleaner device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014125057A (en) * 2012-12-26 2014-07-07 Koito Mfg Co Ltd Washing device for vehicle
JP2014125056A (en) * 2012-12-26 2014-07-07 Koito Mfg Co Ltd Washing device for vehicle
CN105984438A (en) * 2015-02-03 2016-10-05 上海海拉电子有限公司 Headlight cleaner

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