JPH09242544A - Oil injection valve - Google Patents
Oil injection valveInfo
- Publication number
- JPH09242544A JPH09242544A JP5153196A JP5153196A JPH09242544A JP H09242544 A JPH09242544 A JP H09242544A JP 5153196 A JP5153196 A JP 5153196A JP 5153196 A JP5153196 A JP 5153196A JP H09242544 A JPH09242544 A JP H09242544A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- oil injection
- valve body
- injection valve
- threaded portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000002347 injection Methods 0.000 title claims abstract description 35
- 239000007924 injection Substances 0.000 title claims abstract description 35
- 230000002093 peripheral effect Effects 0.000 claims abstract description 10
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 7
- 239000000057 synthetic resin Substances 0.000 claims abstract description 7
- 230000013011 mating Effects 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 2
- 239000002184 metal Substances 0.000 abstract description 3
- 239000000243 solution Substances 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 21
- 239000010705 motor oil Substances 0.000 description 5
- 238000003466 welding Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
Landscapes
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、自動車エンジンの
シリンダーブロックに取り付けられるオイル噴射バルブ
に関する。TECHNICAL FIELD The present invention relates to an oil injection valve mounted on a cylinder block of an automobile engine.
【０００２】[0002]
【従来の技術】図３は従来のこの種のオイル噴射バルブ
を示している。図３において、オイル噴射バルブ１は、
各シリンダー２に１つずつ使用され、油路３を通って供
給されたエンジンオイルをピストン４の内側に噴射し
て、ピストン４を冷却し、ピストン４の温度上昇による
焼き付きやノッキングを防止する。また、噴射されたエ
ンジンオイルは、シリンダー２の内面にも飛散するの
で、ピストン４とシリンダー２間の潤滑を補助する役割
を併せ持つ。2. Description of the Related Art FIG. 3 shows a conventional oil injection valve of this type. In FIG. 3, the oil injection valve 1 is
The engine oil, which is used for each cylinder 2 and is supplied through the oil passage 3, is injected into the inside of the piston 4 to cool the piston 4 and prevent seizure and knocking due to the temperature rise of the piston 4. Further, the injected engine oil also scatters on the inner surface of the cylinder 2, so that it also has a role of assisting lubrication between the piston 4 and the cylinder 2.
【０００３】オイル噴射バルブ１は、図４に示すよう
に、金属製のバルブ本体５を有する。バルブ本体５は、
内部に貫通孔５ａを備えるとともに、外周面にシリンダ
ーに固定するためのねじ部５ｂが設けられている。貫通
孔５ａの内部には、ボールバルブ６およびスプリング７
が配置され、バルブ本体５の先端部には、噴射ノズル８
が加締められている。ボールバルブ６は、例えばエンジ
ン回転数が２０００から３０００ｒｐｍまでは開弁しな
いように開弁圧が設定されており、それ以上の高速回転
では、油圧によりスプリング７が押されて開弁し、噴射
ノズル８からエンジンオイルを噴射するようになってい
る。The oil injection valve 1 has a valve body 5 made of metal, as shown in FIG. The valve body 5 is
A through hole 5a is provided inside, and a screw portion 5b for fixing to the cylinder is provided on the outer peripheral surface. A ball valve 6 and a spring 7 are provided inside the through hole 5a.
Is disposed, and the injection nozzle 8 is provided at the tip of the valve body 5.
Is crimped. The ball valve 6 has a valve opening pressure set so as not to be opened, for example, from an engine speed of 2000 to 3000 rpm, and at a higher rotation speed than that, the spring 7 is pressed by hydraulic pressure to open the valve, and the injection nozzle is opened. It is designed to inject engine oil from 8.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記従
来のオイル噴射バルブでは、バルブ本体が金属の削り加
工品であるため、重量が重く、また削り加工や加締め等
の加工作業のためにコストが高くなるという問題があっ
た。However, in the above-mentioned conventional oil injection valve, since the valve body is a metal shaving product, the weight is heavy and the cost for shaving and caulking is low. There was the problem of becoming expensive.
【０００５】本発明は、このような従来の問題を解決す
るものであり、軽量で低コストのオイル噴射バルブを提
供することを目的とする。The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to provide a lightweight and low-cost oil injection valve.
【０００６】[0006]
【課題を解決するための手段】本発明は、上記目的を達
成するために、オイル噴射バルブのバルブ本体および噴
射ノズルを合成樹脂製として軽量化および低コスト化を
図るとともに、相手部材であるシリンダーに対する固定
を補強するために、バルブ本体外周面のねじ部よりも軸
方向外側に不連続または連続する突起を設けたものであ
る。バルブ本体のねじ部をシリンダーのねじ部に螺合す
るときに、この突起がシリンダーのねじ部に食い込むの
で、シリンダーに対する取り付けを確実にすることがで
きる。In order to achieve the above object, the present invention aims to reduce the weight and cost by making the valve main body and the injection nozzle of the oil injection valve from synthetic resin, and at the same time, to provide a cylinder as a counterpart member. In order to reinforce fixing to the valve body, a discontinuous or continuous protrusion is provided on the outer side in the axial direction of the threaded portion of the outer peripheral surface of the valve body. When the threaded portion of the valve body is screwed into the threaded portion of the cylinder, this projection bites into the threaded portion of the cylinder, so that the attachment to the cylinder can be ensured.
【０００７】[0007]
【発明の実施の形態】本発明は、先端部に噴射ノズル、
内部に貫通孔を備えるとともに外周面にねじ部が設けら
れた合成樹脂製のバルブ本体と、このバルブ本体の貫通
孔内に設けられたバルブ素子とを備え、バルブ本体のね
じ部よりも軸方向外側に相手部材のねじ部に食い込む突
起を不連続にまたは連続して設けたものであり、軽量で
低コストのオイル噴射バルブを実現することができる。BEST MODE FOR CARRYING OUT THE INVENTION The present invention relates to a jet nozzle,
A valve body made of synthetic resin, which has a through hole inside and a threaded portion on the outer peripheral surface, and a valve element provided in the through hole of the valve body. Since the protrusion that bites into the threaded portion of the mating member is provided discontinuously or continuously on the outer side, a lightweight and low-cost oil injection valve can be realized.
【０００８】本発明はまた、バルブ素子が、ボールバル
ブとこれを押圧するスプリングとからなるものであり、
構造が簡単で、より低コストのオイル噴射バルブを実現
することができる。In the present invention, the valve element comprises a ball valve and a spring for pressing the ball valve.
It is possible to realize a lower cost oil injection valve with a simple structure.
【０００９】[0009]
【実施例】図１は本発明の一実施例を示している。図１
（ａ）において、オイル噴射バルブ１１は、合成樹脂製
のバルブ本体１２を有する。バルブ本体１２は、内部に
貫通孔１２ａが形成されるとともに、外周面にねじ部１
２ｂおよびその軸方向外側に突起１２ｃが形成されてい
る。貫通孔１２ａの途中には斜面状のバルブシート１２
ｄが形成され、軸方向外側の端部には六角穴１２ｅが形
成されている。バルブ本体１２は、ＰＰＳ樹脂を使用し
た射出成形法により形成され、突起１２ｃは、図１
（ｂ）に示すように、外周面の１８０度方向に２ヵ所形
成されている。バルブ本体１２の貫通孔１２ａ内には、
スチール製のボールバルブ１３が配置され、スチール製
のコイルスプリング１４によりバルブシート１２ｄに押
圧されている。バルブ本体１２の先端部には、ボールバ
ルブ１３およびコイルスプリング１４を収容した後、合
成樹脂製の噴射ノズル１５が固定される。噴射ノズル１
５は、ＰＰＳ樹脂で射出成形法により形成され、バルブ
本体１２に対し、振動溶着、超音波溶着等の溶着、また
はスナップフィットや接着剤により接合される。FIG. 1 shows an embodiment of the present invention. FIG.
In (a), the oil injection valve 11 has a valve body 12 made of synthetic resin. The valve body 12 has a through hole 12a formed therein and a threaded portion 1 on the outer peripheral surface.
A protrusion 12c is formed on the outer peripheral portion 2b and its axial outside. A sloped valve seat 12 is provided in the middle of the through hole 12a.
d is formed, and a hexagonal hole 12e is formed at the outer end in the axial direction. The valve body 12 is formed by an injection molding method using PPS resin, and the protrusion 12c is formed as shown in FIG.
As shown in (b), it is formed at two places in the 180 ° direction on the outer peripheral surface. In the through hole 12a of the valve body 12,
A steel ball valve 13 is arranged and pressed against the valve seat 12d by a steel coil spring 14. After the ball valve 13 and the coil spring 14 are housed in the tip portion of the valve body 12, a synthetic resin injection nozzle 15 is fixed. Injection nozzle 1
5 is made of PPS resin by an injection molding method, and is joined to the valve body 12 by welding such as vibration welding, ultrasonic welding, or snap fit or an adhesive.
【００１０】図２は上記オイル噴射バルブ１１をシリン
ダーブロック１６に取り付けた状態を示している。シリ
ンダーブロック１６のねじ部１６ａに、オイル噴射バル
ブ１１のバルブ本体１２を挿入して回転させ、ねじ部１
６ａにねじ部１２ｂを噛み合せ、基礎部の六角穴１２ｅ
に六角棒スパナを挿入してさらに締め込むと、突起１２
ｃが潰れてねじ部１６ａに食い込む。そして、噴射ノズ
ル１５の肩部１５ａが、シリンダーブロック１６の肩部
１６ｂに当たることにより、締め付けが完了する。そし
て、供給されたエンジンオイルの油圧Ｐが、オイル噴射
バルブ１１に設定された開弁圧を越えると、ボールバル
ブ１３がバルブシート１２ｄから離れ、エンジンオイル
が貫通孔１２ａを通って噴射ノズル１５の開口からシリ
ンダーブロック１６の中に噴射される。FIG. 2 shows a state in which the oil injection valve 11 is attached to the cylinder block 16. Insert the valve body 12 of the oil injection valve 11 into the threaded portion 16a of the cylinder block 16 and rotate the threaded portion 1a.
The hexagonal hole 12e of the base part is engaged with the screw part 12b in 6a.
Insert the hexagon wrench into
c is crushed and bites into the screw portion 16a. Then, the shoulder portion 15a of the injection nozzle 15 hits the shoulder portion 16b of the cylinder block 16, whereby the tightening is completed. When the hydraulic pressure P of the supplied engine oil exceeds the valve opening pressure set for the oil injection valve 11, the ball valve 13 separates from the valve seat 12d, and the engine oil passes through the through hole 12a and the injection nozzle 15 flows. It is injected into the cylinder block 16 through the opening.
【００１１】上記実施例において、バルブ本体１２の外
周面に設けた突起１２ｃは、１８０度方向に２ヵ所とし
たが、１つ以上何ヶ所でもよく、またこのような不連続
状態ではなく、連続した１つの突起でもよい。また突起
１２ｃは、軸方向にずらした位置に複数個設けてもよ
い。In the above embodiment, the protrusions 12c provided on the outer peripheral surface of the valve body 12 are provided at two places in the direction of 180 degrees, but there may be one or more places, and there is no such a discontinuous state, but a continuous state. It may be one protrusion. A plurality of protrusions 12c may be provided at positions shifted in the axial direction.
【００１２】さらに、噴射ノズル１５をバルブ本体１２
と一体としてもよい。この場合には、バルブ素子を貫通
孔１２ａ内に装着するため、バルブシートを別体とする
か、バルブ本体を分割することが好ましい。Further, the injection nozzle 15 is connected to the valve body 12
May be integrated with. In this case, since the valve element is mounted in the through hole 12a, it is preferable to separate the valve seat or divide the valve body.
【００１３】[0013]
【発明の効果】以上のように、本発明によれば、オイル
噴射バルブのバルブ本体および噴射ノズルを合成樹脂製
としたので、軽量化を図ることができるとともに、削り
加工等の加工作業が不要になるので、低コスト化を図る
ことができる。また、相手部材であるシリンダーに対す
る固定を補強するために、バルブ本体外周面のねじ部よ
りも軸方向外側に不連続または連続する突起を設けて、
相手部材のねじ部に食い込ませるようにしたので、シリ
ンダーに対する取り付けを確実にすることができる。As described above, according to the present invention, since the valve body and the injection nozzle of the oil injection valve are made of synthetic resin, the weight can be reduced and the machining work such as shaving is unnecessary. Therefore, cost reduction can be achieved. Further, in order to reinforce the fixation to the cylinder which is the mating member, a discontinuous or continuous protrusion is provided on the outer peripheral surface of the valve main body in the axial direction outside of the threaded portion,
Since it is designed to bite into the threaded portion of the mating member, the attachment to the cylinder can be ensured.
【図１】（ａ）本発明の一実施例におけるオイル噴射バ
ルブの部分断面正面図。 （ｂ）本発明の一実施例におけるオイル噴射バルブの右
側面図。FIG. 1A is a partial sectional front view of an oil injection valve according to an embodiment of the present invention. (B) The right view of the oil injection valve in one Example of this invention.
【図２】本発明の一実施例におけるオイル噴射バルブを
シリンダーブロックに取り付けた状態の部分断面正面
図。FIG. 2 is a partial cross-sectional front view showing a state where the oil injection valve according to the embodiment of the present invention is attached to the cylinder block.
【図３】オイル噴射バルブを取り付けたエンジンの概略
断面図。FIG. 3 is a schematic cross-sectional view of an engine equipped with an oil injection valve.
【図４】従来のオイル噴射バルブの断面正面図。FIG. 4 is a sectional front view of a conventional oil injection valve.
１１ オイル噴射バルブ １２ バルブ本体 １２ａ 貫通孔 １２ｂ ねじ部 １２ｃ 突起 １２ｄ バルブシート １２ｅ 六角穴 １３ ボールバルブ １４ コイルスプリング １５ 噴射ノズル １５ａ 肩部 １６ シリンダーブロック １６ａ ねじ部 １６ｂ 肩部 11 Oil Injection Valve 12 Valve Body 12a Through Hole 12b Threaded Part 12c Protrusion 12d Valve Seat 12e Hexagonal Hole 13 Ball Valve 14 Coil Spring 15 Injection Nozzle 15a Shoulder 16 Cylinder Block 16a Screw 16b Shoulder
Claims (2)
えるとともに外周面にねじ部が設けられた合成樹脂製の
バルブ本体と、前記バルブ本体の貫通孔内に設けられた
バルブ素子とを備え、前記バルブ本体のねじ部よりも軸
方向外側に相手部材のねじ部に食い込む突起を不連続に
または連続して設けたオイル噴射バルブ。1. A valve body made of synthetic resin, which has an injection nozzle at its tip, a through hole inside and a threaded portion on the outer peripheral surface, and a valve element provided in the through hole of the valve body. An oil injection valve, comprising: a projection that bites into a threaded portion of a mating member discontinuously or continuously outside the threaded portion of the valve body in the axial direction.
圧するスプリングとからなる請求項１記載のオイル噴射
バルブ。2. The oil injection valve according to claim 1, wherein the valve element comprises a ball valve and a spring for pressing the ball valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05153196A JP3688051B2 (en) | 1996-03-08 | 1996-03-08 | Oil injection valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05153196A JP3688051B2 (en) | 1996-03-08 | 1996-03-08 | Oil injection valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09242544A true JPH09242544A (en) | 1997-09-16 |
| JP3688051B2 JP3688051B2 (en) | 2005-08-24 |
Family
ID=12889614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05153196A Expired - Fee Related JP3688051B2 (en) | 1996-03-08 | 1996-03-08 | Oil injection valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3688051B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010281244A (en) * | 2009-06-03 | 2010-12-16 | Matsumoto Jukogyo Kk | Oil jet and manufacturing method thereof |
| JP2011094519A (en) * | 2009-10-28 | 2011-05-12 | Daiwa Can Co Ltd | Piston cooling oil jet and method for manufacturing the same |
| CN101265833B (en) | 2007-03-16 | 2012-04-25 | 邦达中心 | Cooling sprayer with valve |
-
1996
- 1996-03-08 JP JP05153196A patent/JP3688051B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101265833B (en) | 2007-03-16 | 2012-04-25 | 邦达中心 | Cooling sprayer with valve |
| JP2010281244A (en) * | 2009-06-03 | 2010-12-16 | Matsumoto Jukogyo Kk | Oil jet and manufacturing method thereof |
| JP2011094519A (en) * | 2009-10-28 | 2011-05-12 | Daiwa Can Co Ltd | Piston cooling oil jet and method for manufacturing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3688051B2 (en) | 2005-08-24 |
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