JPH06174134A - Linear solenoid valve - Google Patents

Abstract

PURPOSE:To prevent the expansion of a weld strain range to a magnetic path, ensure freedom from a drop in magnetic flux density, allow a yoke or the like to be jointed with weld, and reduce manhours for manufacture by welding and jointing a spacer ring, a yoke and a valve sleeve along the periphery of edges in contact with one another. CONSTITUTION:A ring spacer 1 is formed to have both upper and lower ends 11 and 12 of small thickness, and the outer diameter thereof is formed to be small in step. On the other hand, a yoke 2 and a valve spring 3 are formed to be thin at the lower end 21 and upper end 31 opposite to each other, and the inner diameter thereof is enlarged in step. Then, both upper and lower ends 11 and 12 are pressed into the opposite lower end 21 and upper end 31, thereby positioning three members 1 to 3. Thereafter, the three members 1 to 3 are welded and jointed to one another at the outer contact sections 211 and 311 thereof. In this case, the outer contact sections 211 and 311 are substantially away from each inner contact section where a magnetic path passes. Thus, the range A of weld strain does not expand to the magnetic path. As a result, sufficient magnetic flux density can be maintained.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明はリニアソレノイドバルブ
に関し、特に製造簡易でかつ充分な電磁操作力を発揮す
るリニアソレノイドバルブに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a linear solenoid valve, and more particularly to a linear solenoid valve which is easy to manufacture and exhibits a sufficient electromagnetic operation force.

【０００２】[0002]

【従来の技術】図２，図３には従来のリニアソレノイド
バルブの一例を示す。機器Ｍ内を水平より下方へ屈曲し
て延びる流路Ｆには屈曲部の空間内に、対向する側壁に
流通孔４１を設けた筒状のエンドスリーブ４が嵌装さ
れ、その筒内には上方よりスプールバルブ５の下半部が
挿入してある。2 and 3 show an example of a conventional linear solenoid valve. A tubular end sleeve 4 having a through hole 41 in the opposite side wall is fitted in the space of the bent portion in the flow path F that extends by bending downward in the device M from the horizontal. The lower half of the spool valve 5 is inserted from above.

【０００３】スプールバルブ５はエンドスリーブ４内を
上下動自在で、これがエンドスリーブ４下端に結合した
筒状ストッパ６から離れて上方へ移動すると、スプール
バルブ５下端に形成した切欠き５１がエンドスリーブ４
の内周から露出して上記流通孔４１に通じる。そして、
スプールバルブ５の上昇量が大きくなるほど、流路Ｆの
開口面積は増大する（図２の右半部）。The spool valve 5 is movable up and down in the end sleeve 4. When the spool valve 5 moves upward away from the cylindrical stopper 6 connected to the lower end of the end sleeve 4, the notch 51 formed at the lower end of the spool valve 5 becomes an end sleeve. Four
It is exposed from the inner periphery of and communicates with the flow hole 41. And
As the amount of rise of the spool valve 5 increases, the opening area of the flow path F increases (right half of FIG. 2).

【０００４】エンドスリーブ４は、流路Ｆの屈曲部空間
の開口に結合したリング状バルブスリーブ３により保持
されており、該バルブスリーブ３の内周筒壁端面上にス
ペーサリング１が当接している。スペーサリング１には
さらに上方より筒状ヨーク２が当接せしめてあり、これ
らバルブスリーブ３、スペーサリング１およびヨーク２
下端部の各内周面が同一面に位置して筒内空間を形成
し、上記スプールバルブ５の上半部が、この筒内空間に
摺動自在に位置している。なお、上記バルブスリーブ３
およびヨーク２は炭素鋼等の磁性材により構成し、上記
スペーサリング１はステンレス鋼等の非磁性材により構
成してある。The end sleeve 4 is held by a ring-shaped valve sleeve 3 connected to the opening of the space of the bent portion of the flow path F, and the spacer ring 1 abuts on the end surface of the inner peripheral cylinder wall of the valve sleeve 3. There is. A cylindrical yoke 2 is further brought into contact with the spacer ring 1 from above, and these valve sleeve 3, spacer ring 1 and yoke 2 are attached.
The inner peripheral surfaces of the lower end portions are located on the same plane to form a cylinder interior space, and the upper half of the spool valve 5 is slidably located in the cylinder interior space. The above valve sleeve 3
The yoke 2 is made of a magnetic material such as carbon steel, and the spacer ring 1 is made of a non-magnetic material such as stainless steel.

【０００５】スペーサリング１等の外周には、側方へ突
出する給電コネクタ７を経て通電励磁されるソレノイド
８が設けてあり、ソレノイド８が励磁されると、図の矢
印で示す磁路に磁束を生じる。すなわち、この場合の磁
路は、ヨーク２の下端内周部より、スプールバルブ５の
上端部を経て、バルブスリーブ３の上端内周部に至るも
のである。On the outer periphery of the spacer ring 1 and the like, a solenoid 8 is provided which is energized and excited via a power feeding connector 7 protruding laterally. When the solenoid 8 is energized, a magnetic flux is generated in a magnetic path indicated by an arrow in the figure. Cause That is, the magnetic path in this case extends from the inner peripheral portion of the lower end of the yoke 2 to the inner peripheral portion of the upper end of the valve sleeve 3 through the upper end portion of the spool valve 5.

【０００６】磁束を生じるとスプールバルブ５は、これ
の上端とヨーク２筒内にねじ込み固定された栓部材９と
の間に配したコイルバネ９のバネ力に抗して上方へ吸引
移動せしめられる。When a magnetic flux is generated, the spool valve 5 is moved upward by suction against the spring force of the coil spring 9 arranged between the upper end of the spool valve 5 and the plug member 9 screwed and fixed in the yoke 2 cylinder.

【０００７】[0007]

【発明が解決しようとする課題】ところで、スペーサリ
ング１とこれの上下に接するヨーク２およびバルブスリ
ーブ３との結合は、当接する端面間を銅ロー付けするこ
とにより行っており、ロー付け作業は、ロー材が必要
で、かつ工程が複雑なため作業性が悪い。かかる銅ロー
付けを行う理由は、温度変化の激しい溶接を使用する
と、溶接する端面の近傍域（図２のＡ部）でヨーク２等
を構成する材料に歪みや組織変化を生じ、磁束密度が低
下して電磁吸引力が小さくなるからである。By the way, the spacer ring 1 and the yoke 2 and the valve sleeve 3 which are in contact with the upper and lower sides of the spacer ring 1 are connected by copper brazing between the abutting end faces. The workability is poor because the brazing material is required and the process is complicated. The reason for performing such copper brazing is that when welding with drastic temperature changes is used, distortion or microstructure change occurs in the material forming the yoke 2 and the like in the region near the end face to be welded (A part in FIG. 2), and the magnetic flux density This is because the magnetic attraction force decreases and the electromagnetic attraction force decreases.

【０００８】また、上記結合作業を行う際に、スペーサ
リング１等の位置決めのために、これらの筒内空間に治
具を挿入しているが、この治具の挿入、取出し作業に手
間を要する。Further, when the above-mentioned joining work is performed, jigs are inserted into these in-cylinder spaces for positioning the spacer ring 1 and the like, but it takes time and effort to insert and take out the jigs. .

【０００９】本発明はかかる課題を解決するもので、磁
束密度を低下せしめることなくヨーク等の溶接固定が可
能であり、溶接時の治具も不要で、製造簡易かつ充分な
電磁操作力を発揮するリニアソレノイドバルブを提供す
ることを目的とする。The present invention solves the above-mentioned problems. It is possible to weld and fix a yoke or the like without lowering the magnetic flux density, and a jig for welding is not required, and the production is simple and sufficient electromagnetic operating force is exerted. An object of the present invention is to provide a linear solenoid valve that operates.

【００１０】[0010]

【課題を解決するための手段】本発明の構成を説明する
と、非磁性材よりなるスペーサリング１を上下より挟
み、互いの端面を当接せしめて磁性材よりなる筒状ヨー
ク２と筒状バルブスリーブ３を設けて、これらで同一面
の内周空間を形成し、該内周空間内に摺動自在に配設し
たスプールバルブ４を上記ヨーク２に吸引作動せしめる
ようになしたリニアソレノイドバルブにおいて、上記ス
ペーサリング１は上下端部１１，１２の外周径を小さく
なして、内周径を大きくした上記ヨーク２とバルブスリ
ーブ３の端部２１，３１内にそれぞれ圧入位置決めし、
かつスペーサリング１と、ヨーク２およびバルブスリー
ブ３とを、当接する端面の外周部２１１，３１１で溶接
結合したものである。The structure of the present invention will be described. A spacer ring 1 made of a non-magnetic material is sandwiched from above and below, and end faces of the spacer rings are brought into contact with each other to make a cylindrical yoke 2 made of a magnetic material and a cylindrical valve. A linear solenoid valve in which a sleeve 3 is provided, and an inner peripheral space on the same plane is formed by these, and a spool valve 4 slidably disposed in the inner peripheral space is made to suction-operate on the yoke 2. The spacer ring 1 is press-fitted and positioned in the ends 21 and 31 of the yoke 2 and the valve sleeve 3, respectively, in which the outer peripheral diameters of the upper and lower end portions 11 and 12 are reduced and the inner peripheral diameter is increased.
In addition, the spacer ring 1, the yoke 2 and the valve sleeve 3 are welded together at the outer peripheral portions 211 and 311 of the abutting end faces.

【００１１】[0011]

【作用】上記構成において、スペーサリング１の上下の
端部をそれぞれヨーク２およびバルブスリーブ３の端部
に圧入して位置決めするから、従来の如き位置決め用の
治具を使用することなく、溶接が可能である。In the above structure, since the upper and lower ends of the spacer ring 1 are press-fitted into the ends of the yoke 2 and the valve sleeve 3 respectively for positioning, welding can be performed without using a conventional positioning jig. It is possible.

【００１２】銅ロー付けに代えて簡易な溶接によりヨー
ク２等の結合がなされる。また、溶接結合される端面の
外周部２１１，３１１は磁路から離れているから、溶接
による材料の歪みが磁路に及ぶことはなく、磁束密度の
低下は生じない。The yoke 2 and the like are joined by simple welding instead of copper brazing. Further, since the outer peripheral portions 211 and 311 of the end faces to be welded are separated from the magnetic path, the distortion of the material due to welding does not extend to the magnetic path, and the magnetic flux density does not decrease.

【００１３】[0013]

【実施例】図１に本発明の一実施例を示す。全体構造は
既に説明した従来例と同一であるから、以下、相違点を
中心に説明する。FIG. 1 shows an embodiment of the present invention. Since the entire structure is the same as that of the conventional example described above, the difference will be mainly described below.

【００１４】図において、リングスペーサ１は上下端部
１１，１２を薄肉として、その外周径を段付きに小さく
してある。一方、その上下に位置するヨーク２およびバ
ルブスリーブ３は、それぞれ下端部２１および上端部３
１を薄肉として、その内周径を段付きに大きくしてあ
る。しかして、リングスペーサ１はその上下の端部１
１，１２をそれぞれヨーク２およびバルブスリーブ３の
端部２１，３１内に圧入し、位置決め固定してある。こ
の状態で、上記三者の内周面は同一面となり、スプール
バルブ５は外周面が接して上下に摺動自在である。In the figure, the ring spacer 1 has upper and lower end portions 11 and 12 which are thin and whose outer diameter is stepwise reduced. On the other hand, the yoke 2 and the valve sleeve 3 located above and below the lower end portion 21 and the upper end portion 3, respectively.
1 has a thin wall, and its inner peripheral diameter is increased stepwise. Then, the ring spacer 1 has the upper and lower end portions 1
1 and 12 are press-fitted into the ends 21 and 31 of the yoke 2 and the valve sleeve 3, respectively, and are positioned and fixed. In this state, the inner peripheral surfaces of the three members are the same surface, and the outer peripheral surface of the spool valve 5 is in contact with and slidable up and down.

【００１５】上記リングスペーサ１とヨーク２およびリ
ングスペーサ１とバルブスリーブ３は、外周側の当接部
２１１，３１１で溶接により結合されており、溶接歪み
が図のＡで示す略半円形の範囲に及んでいる。The ring spacer 1 and the yoke 2 and the ring spacer 1 and the valve sleeve 3 are welded to each other by abutting portions 211 and 311 on the outer peripheral side, and the welding distortion is in a substantially semicircular range shown by A in the figure. It extends to.

【００１６】ソレノイド８に通電した時の磁路は、図の
矢印で示す如く、ヨーク２を経てその内周側よりスプー
ルバルブ５へ至り、これよりバルブスリーブ３の内周側
に至る。溶接された外周側の各当接部２１１，３１１
は、内周側の各当接部とは上下方向へ充分離れていて、
外周側の各当接部２１１，３１１は、磁路が通る内周側
の各当接部から大きく離れているから、溶接歪みの範囲
が磁路に及ぶことはなく、充分な磁束密度が確保され
る。The magnetic path when the solenoid 8 is energized passes through the yoke 2 from the inner peripheral side thereof to the spool valve 5 as shown by the arrow in the figure, and from this to the inner peripheral side of the valve sleeve 3. Welded outer peripheral side contact portions 211 and 311
Is sufficiently separated in the vertical direction from the inner peripheral contacting parts,
Since the outer peripheral contact portions 211 and 311 are largely separated from the inner peripheral contact portions through which the magnetic path passes, the range of welding strain does not extend to the magnetic path, and a sufficient magnetic flux density is secured. To be done.

【００１７】かくして、ヨーク２等の溶接による結合が
可能であるから製造の手間が大きく削減され、かつ充分
な電磁吸引力も確保される。また、溶接時の位置決め治
具が不要であるから、この点でも製造工数の削減が実現
される。Thus, since the yoke 2 and the like can be joined by welding, the labor required for manufacturing can be greatly reduced, and a sufficient electromagnetic attraction force can be secured. Further, since a positioning jig for welding is unnecessary, the number of manufacturing steps can be reduced in this respect as well.

【００１８】[0018]

【発明の効果】以上の如く、本発明のリニアソレノイド
バルブによれば、製造工数の削減と充分な電磁操作力の
確保とを併せて図ることができる。As described above, according to the linear solenoid valve of the present invention, it is possible to reduce the number of manufacturing steps and secure a sufficient electromagnetic operation force.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の一実施例を示すリニアソレノイドバル
ブの全体断面図である。FIG. 1 is an overall sectional view of a linear solenoid valve showing an embodiment of the present invention.

【図２】従来例を示すリニアソレノイドバルブの全体断
面図である。FIG. 2 is an overall sectional view of a linear solenoid valve showing a conventional example.

【図３】リニアソレノイドバルブの全体平面図である。FIG. 3 is an overall plan view of a linear solenoid valve.

【符号の説明】[Explanation of symbols]

１ スペーサリング １１ 上端部 １２ 下端部 ２ ヨーク ２１ 下端部 ２１１ 当接部（端面外周部） ３ バルブスリーブ ３１ 上端部 ３１１ 当接部（端面外周部） 1 Spacer Ring 11 Upper End 12 Lower End 2 Yoke 21 Lower End 211 Contact Part (End Face Outer Perimeter) 3 Valve Sleeve 31 Upper End 311 Contact Part (End Face Outer Part)

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 非磁性材よりなるスペーサリングを上下
より挟み、互いの端面を当接せしめて磁性体材よりなる
筒状ヨークと筒状バルブスリーブを設けて、これらで同
一面の内周空間を形成し、該内周空間内に摺動自在に配
設したスプールバルブを上記ヨークに吸引作動せしめる
ようになしたリニアソレノイドバルブにおいて、上記ス
ペーサリングは上下端部の外周径を小さくなして、内周
径を大きくした上記ヨークとバルブスリーブの端部内に
それぞれ圧入位置決めし、かつスペーサリングと、ヨー
クおよびバルブスリーブとを、当接する端面の外周部で
溶接結合したことを特徴とするリニアソレノイドバル
ブ。1. A cylindrical yoke and a cylindrical valve sleeve made of a magnetic material are provided by sandwiching a spacer ring made of a non-magnetic material from above and below, and abutting the end faces of each other, and an inner peripheral space of the same plane is formed by these. In the linear solenoid valve in which the spool valve slidably arranged in the inner peripheral space is suction-operated by the yoke, the spacer ring reduces the outer peripheral diameter of the upper and lower ends, A linear solenoid valve characterized in that the yoke having a large inner diameter and the valve sleeve are press-fitted into the ends of the sleeve and the spacer ring, and the yoke and the valve sleeve are welded to each other at the outer periphery of the abutting end surface. .