JP2005337475A - Electromagnetic valve device - Google Patents

Electromagnetic valve device Download PDF

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JP2005337475A
JP2005337475A JP2004161077A JP2004161077A JP2005337475A JP 2005337475 A JP2005337475 A JP 2005337475A JP 2004161077 A JP2004161077 A JP 2004161077A JP 2004161077 A JP2004161077 A JP 2004161077A JP 2005337475 A JP2005337475 A JP 2005337475A
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fixed core
housing
fitting hole
core
side wall
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JP4126557B2 (en
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Tatsumi Oguri
立己 小栗
Mitsuaki Sakai
充秋 酒井
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Denso Corp
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Denso Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an electromagnetic valve device which enables the easy machining of a housing and a fixed core, and a suitable interval between the fixed core and a movable core can be obtained. <P>SOLUTION: The housing 12 is made of a magnetic substance, and has a disk 13 and a leg 16. A circular fitting hole 15 is formed in the center of the disk 13. The fixed core 20 is made of the same substance as the housing 12. A small-diameter part 21 formed at the end of the fixed core 20 is pressed in the fitting hole 15 of the housing 12 to be fitted into the fitting hole 15 at the fixed core 20. Since a side wall 21a of the small-diameter part 21 is subjected to shot blasting, the side wall 21a of the small-diameter part 21 is higher than the side wall 15a of the fitting hole 15 in hardness. A non-magnetic member 32 is formed in a thin-walled cylindrical shape, and installed between the fixed core 20 and a flange 18 to cover the periphery of the fixed core 20 and the movable core 30. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は電磁弁装置に関する。   The present invention relates to a solenoid valve device.

磁性材で形成されたハウジングに嵌合孔を形成し、この嵌合孔に固定コアの軸方向の一端を嵌合させている電磁弁装置が知られている（例えば、特許文献１参照）。このような構成の電磁弁装置を図２に示す。
図２に示す電磁弁装置２００では、ハウジング２０２に形成された嵌合孔２０３に固定コア２０６の一端を圧入して嵌合させ、ハウジング２０２の端部を外側に曲げた曲部２０４とフランジ部材２１２とを溶接している。ハウジング２０２に形成された嵌合孔２０３および固定コア２０６の一端は円形である。また、固定コア２０６の一端の外径は、ハウジング２０２に形成された嵌合孔２０３に圧入するため、嵌合孔２０３の内径よりも大きく形成されている。
特開２００１−３０４４４６号公報 There is known an electromagnetic valve device in which a fitting hole is formed in a housing made of a magnetic material, and one end in the axial direction of a fixed core is fitted into the fitting hole (for example, see Patent Document 1). FIG. 2 shows an electromagnetic valve device having such a configuration.
In the electromagnetic valve device 200 shown in FIG. 2, a bent portion 204 and a flange member in which one end of a fixed core 206 is press-fitted into a fitting hole 203 formed in the housing 202 and the end portion of the housing 202 is bent outward. 212 is welded. One end of the fitting hole 203 and the fixed core 206 formed in the housing 202 is circular. The outer diameter of one end of the fixed core 206 is larger than the inner diameter of the fitting hole 203 in order to press fit into the fitting hole 203 formed in the housing 202.
JP 2001-304446 A

しかしながら、一般に２つの金属面に荷重をかけて接触させると、接触部分で金属が凝着しあう。特に同一または同種金属による凝着力は大きくなる傾向がある。そのため、ハウジング２０２および固定コア２０６を同一または同種の磁性材で形成すると、嵌合孔２０３に固定コア２０６の一端を圧入するときの圧入荷重（以下、単に圧入荷重という）は大きくなる。圧入荷重が大きいと、円筒状の非磁性部材２１０が変形して固定コア２０６が可動コア２０８側に移動する恐れがある。この固定コア２０６の移動によって固定コア２０６と可動コア２０８とのギャップが小さくなると、可動コア２０８とともに往復移動する弁部材２０９の動特性がばらつくという問題がある。
一方、嵌合孔２０３の内径と固定コア２０６の一端の外径との公差を厳しく管理することにより、圧入荷重を低減することができる。しかし、ハウジング２０２および固定コア２０６の加工コストが増加する。また嵌合孔２０３に固定コア２０６の一端を圧入しているときに互いが凝着しあうので、圧入前の嵌合孔２０３の内径と固定コア２０６の一端の外径との公差を管理しても、圧入荷重を適正な大きさに保つことは容易ではない。
また、嵌合孔２０３の側壁２０５または固定コア２０６の一端の側壁２０７に潤滑油等を塗布することにより圧入荷重を低減できる。しかしながら、溶接する部位に塗布した潤滑油が例えばハウジング２０２とフランジ部材２１２との溶接箇所に付着すると、その溶接箇所にブローホールが発生するため、ハウジング２０２とフランジ部材２１２との溶接品質が低下するという問題がある。 However, generally, when two metal surfaces are brought into contact with each other with a load, the metals adhere to each other at the contact portion. In particular, the adhesion force due to the same or similar metal tends to increase. Therefore, if the housing 202 and the fixed core 206 are formed of the same or the same kind of magnetic material, a press-fit load (hereinafter simply referred to as a press-fit load) when one end of the fixed core 206 is press-fitted into the fitting hole 203 is increased. If the press-fit load is large, the cylindrical nonmagnetic member 210 may be deformed and the fixed core 206 may move to the movable core 208 side. When the gap between the fixed core 206 and the movable core 208 is reduced by the movement of the fixed core 206, there is a problem that the dynamic characteristics of the valve member 209 that reciprocates together with the movable core 208 varies.
On the other hand, by strictly managing the tolerance between the inner diameter of the fitting hole 203 and the outer diameter of one end of the fixed core 206, the press-fit load can be reduced. However, the processing cost of the housing 202 and the fixed core 206 increases. Since one end of the fixed core 206 is press-fitted into the fitting hole 203, the tolerance between the inner diameter of the fitting hole 203 before the press-fitting and the outer diameter of one end of the fixed core 206 is managed. However, it is not easy to keep the press-fit load at an appropriate size.
In addition, the press-fitting load can be reduced by applying lubricating oil or the like to the side wall 205 of the fitting hole 203 or the side wall 207 at one end of the fixed core 206. However, if the lubricating oil applied to the part to be welded adheres to, for example, a welded part between the housing 202 and the flange member 212, a blowhole is generated at the welded part, so that the welding quality between the housing 202 and the flange member 212 is deteriorated. There is a problem.

本発明は上記問題点を解決するためになされたものであり、ハウジングおよび固定コアを容易に加工でき、固定コアと可動コアとの間に適正な間隔を確保可能な電磁弁装置を提供することを目的とする。   The present invention has been made to solve the above-described problems, and provides an electromagnetic valve device that can easily process a housing and a fixed core and can secure an appropriate interval between the fixed core and the movable core. With the goal.

請求項１から３に記載の発明によれば、ハウジングに形成された嵌合孔の側壁と固定コアの一端部の側壁とに硬度差を設けているので、嵌合孔に固定コアの一端部を圧入するときに生じる凝着力を低減できる。そのため、嵌合孔に固定コアの一端部を圧入するときに生じる圧入荷重の大きさを適正に保つことができる。したがって、薄肉部材は圧入荷重により変形することがなく、固定コアが可動コア側に移動することがないため、固定コアと可動コアとの間に適正なギャップを確保できる。また嵌合孔の内径と固定コアの一端部の外径との公差を厳しく管理する必要がないので、ハウジングおよび固定コアを容易に加工できる。
請求項３に記載の発明によれば、ショットブラスト加工により、嵌合孔の側壁と固定コアの一端部の側壁とに硬度差を設けることができる。 According to the invention described in claims 1 to 3, since the hardness difference is provided between the side wall of the fitting hole formed in the housing and the side wall of the one end portion of the fixed core, the one end portion of the fixed core is provided in the fitting hole. The adhesive force generated when press-fitting can be reduced. Therefore, the magnitude of the press-fitting load generated when the one end of the fixed core is press-fitted into the fitting hole can be appropriately maintained. Therefore, the thin member is not deformed by the press-fitting load, and the fixed core does not move to the movable core side, so that an appropriate gap can be secured between the fixed core and the movable core. Moreover, since it is not necessary to strictly manage the tolerance between the inner diameter of the fitting hole and the outer diameter of one end of the fixed core, the housing and the fixed core can be easily processed.
According to the third aspect of the present invention, the hardness difference can be provided between the side wall of the fitting hole and the side wall of the one end portion of the fixed core by shot blasting.

以下、本発明の実施形態を図に基づいて説明する。
図１に、本発明の一実施形態による電磁弁装置１０を示す。電磁弁装置１０は、例えばガソリン気筒内直接噴射エンジン用の高圧サプライポンプの燃料調量弁として用いられる。
電磁弁装置１０は、ハウジング１２、フランジ部材１８、固定コア２０、可動コア３０、非磁性部材３２、コイル４０、弁部材５０および弁ボディ６０を有している。ハウジング１２、フランジ部材１８、固定コア２０および可動コア３０は磁性材で形成されており、磁気回路を構成している。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a solenoid valve device 10 according to an embodiment of the present invention. The solenoid valve device 10 is used as a fuel metering valve of a high-pressure supply pump for a gasoline cylinder direct injection engine, for example.
The electromagnetic valve device 10 includes a housing 12, a flange member 18, a fixed core 20, a movable core 30, a nonmagnetic member 32, a coil 40, a valve member 50, and a valve body 60. The housing 12, the flange member 18, the fixed core 20, and the movable core 30 are made of a magnetic material and constitute a magnetic circuit.

ハウジング１２はフェライト系ステンレス鋼等の磁性材で形成されている。ハウジング１２は、円板部１３と脚部１６とを有している。円板部１３は脚部１６が形成されている位置と径方向反対側の外周に切り欠き１４を形成している。切り欠き１４に後述する樹脂カバー４４の突部４８が嵌合している。円板部１３の中央部に円形の嵌合孔１５が形成されており、この嵌合孔１５に固定コア２０の軸方向の一端側が嵌合されている。脚部１６は断面円弧状であり、円板部１３から円板部１３と直角にフランジ部材１８側に延びている。脚部１６のフランジ部材１８側の端部１６ａは磁性部材としてのフランジ部材１８に当接している。   The housing 12 is made of a magnetic material such as ferritic stainless steel. The housing 12 has a disc portion 13 and leg portions 16. The disc portion 13 has a notch 14 formed on the outer periphery on the opposite side of the radial direction from the position where the leg portion 16 is formed. A protrusion 48 of a resin cover 44 described later is fitted in the notch 14. A circular fitting hole 15 is formed at the center of the disc portion 13, and one end side of the fixed core 20 in the axial direction is fitted into the fitting hole 15. The leg portion 16 has an arc shape in cross section, and extends from the disc portion 13 to the flange member 18 side at a right angle to the disc portion 13. The end 16a of the leg 16 on the flange member 18 side is in contact with the flange member 18 as a magnetic member.

固定コア２０は、ハウジング１２と同一の磁性材で形成されている。固定コア２０は、ハウジング１２の嵌合孔１５から露出している軸方向の一端側から、小径部２１、大径部２２、小径部２３をこの順に有している。小径部２１と小径部２３の外径はほぼ等しく、嵌合孔１５の内径よりも僅かに大きい。固定コア２０の一端部としての小径部２１がハウジング１２の嵌合孔１５に圧入されて、固定コア２０は嵌合孔１５に嵌合されている。固定コア２０の小径部２１の側壁２１ａには、ショットブラスト加工が施されている。そのため小径部２１の側壁２１ａの硬度は、ショットブラスト加工にともなう加工硬化により、嵌合孔１５の側壁１５ａの硬度と比較して高くなっている。   The fixed core 20 is formed of the same magnetic material as the housing 12. The fixed core 20 has a small diameter portion 21, a large diameter portion 22, and a small diameter portion 23 in this order from one end side in the axial direction exposed from the fitting hole 15 of the housing 12. The outer diameters of the small diameter portion 21 and the small diameter portion 23 are substantially equal and slightly larger than the inner diameter of the fitting hole 15. A small diameter portion 21 as one end portion of the fixed core 20 is press-fitted into the fitting hole 15 of the housing 12, and the fixed core 20 is fitted into the fitting hole 15. Shot blasting is applied to the side wall 21 a of the small diameter portion 21 of the fixed core 20. Therefore, the hardness of the side wall 21a of the small-diameter portion 21 is higher than the hardness of the side wall 15a of the fitting hole 15 due to work hardening accompanying shot blasting.

可動コア３０は、固定コアの他端部としての小径部２３と向き合っている。薄肉部としての非磁性部材３２は、非磁性材により薄肉の円筒状に形成されており、固定コア２０および可動コア３０の周囲を覆っている。非磁性部材３２は、固定コア２０の大径部２２の小径部２３側とフランジ部材１８との間に挟持されている。非磁性部材３２は、フランジ部材１８と固定コア２０との間で磁束が短絡することを防止する。コイルスプリング３４は固定コア２０から可動コア３０が離れる方向、つまり後述する弁座６２から弁部材５０の当接部５２が離れる方向に可動コア３０を付勢している。   The movable core 30 faces the small diameter portion 23 as the other end portion of the fixed core. The nonmagnetic member 32 as a thin portion is formed in a thin cylindrical shape by a nonmagnetic material and covers the periphery of the fixed core 20 and the movable core 30. The nonmagnetic member 32 is sandwiched between the flange member 18 and the small diameter portion 23 side of the large diameter portion 22 of the fixed core 20. The nonmagnetic member 32 prevents the magnetic flux from being short-circuited between the flange member 18 and the fixed core 20. The coil spring 34 biases the movable core 30 in a direction in which the movable core 30 is separated from the fixed core 20, that is, in a direction in which a contact portion 52 of the valve member 50 is separated from a valve seat 62 described later.

コイル４０は、ボビン４２に巻回されており、固定コア２０および非磁性部材３２の外周を覆っている。樹脂カバー４４はコイル４０およびボビン４２を覆っており、樹脂カバー４４にターミナル４６がインサート成形されている。ターミナル４６とコイル４０とは電気的に接続している。
弁部材５０は可動コア３０と結合しており可動コア３０とともに往復移動する。弁部材５０は弁ボディ６０内に往復移動可能に収容されている。弁部材５０の当接部５２は弁ボディ６０に形成されている弁座６２に着座可能である。 The coil 40 is wound around a bobbin 42 and covers the outer periphery of the fixed core 20 and the nonmagnetic member 32. The resin cover 44 covers the coil 40 and the bobbin 42, and a terminal 46 is insert-molded on the resin cover 44. The terminal 46 and the coil 40 are electrically connected.
The valve member 50 is coupled to the movable core 30 and reciprocates together with the movable core 30. The valve member 50 is accommodated in the valve body 60 so as to be reciprocally movable. The contact portion 52 of the valve member 50 can be seated on a valve seat 62 formed on the valve body 60.

弁ボディ６０は、軸方向に開口する流入口６４と、軸と直交する方向に開口する流出口６６とを有している。弁部材５０の当接部５２が弁座６２に着座すると、流入口６４と流出口６６との連通は遮断される。弁部材５０の当接部５２が弁座６２から離座すると、流入口６４と流出口６６とは連通する。   The valve body 60 has an inflow port 64 that opens in the axial direction, and an outflow port 66 that opens in a direction orthogonal to the axis. When the contact portion 52 of the valve member 50 is seated on the valve seat 62, the communication between the inlet 64 and the outlet 66 is blocked. When the contact portion 52 of the valve member 50 is separated from the valve seat 62, the inflow port 64 and the outflow port 66 communicate with each other.

ストッパプレート７０は弁ボディ６０に組み付けられており、弁部材５０のリフト量を規定する。ストッパプレート７０の外周縁部の一部は切り欠かれており、この切り欠きにより連通路７２が形成されている。弁部材５０の当接部５２が弁座６２から離座すると、連通路７２を介し、流入口６４と流出口６６とが連通する。   The stopper plate 70 is assembled to the valve body 60 and defines the lift amount of the valve member 50. A part of the outer peripheral edge portion of the stopper plate 70 is notched, and the communication path 72 is formed by this notch. When the contact portion 52 of the valve member 50 is separated from the valve seat 62, the inflow port 64 and the outflow port 66 communicate with each other through the communication path 72.

コイル４０への通電が遮断されると、可動コア３０が固定コア２０から離れる方向に受けるコイルスプリング３４の付勢力により、弁部材５０の当接部５２は弁座６２から離れるので、流入口６４と流出口６６とは連通路７２を介し連通する。
コイル４０に通電されると、コイルスプリング３４の付勢力に抗して可動コア３０は固定コア２０側に吸引され、弁部材５０の当接部５２は弁座６２に着座する。これにより、流入口６４と流出口６６との連通は遮断される。 When the energization of the coil 40 is interrupted, the contact portion 52 of the valve member 50 is separated from the valve seat 62 by the urging force of the coil spring 34 received in the direction in which the movable core 30 is separated from the fixed core 20. And the outlet 66 communicate with each other via a communication path 72.
When the coil 40 is energized, the movable core 30 is attracted toward the fixed core 20 against the biasing force of the coil spring 34, and the contact portion 52 of the valve member 50 is seated on the valve seat 62. Thereby, the communication between the inflow port 64 and the outflow port 66 is blocked.

次に、電磁弁装置１０の製造工程について説明する。
まず、非磁性部材３２の内周に固定コア２０の小径部２３を嵌め込むように、非磁性部材３２に固定コア２０を組み付ける。
次に、非磁性部材３２の上端面３２ａで固定コア２０と非磁性部材３２とを溶接などにより接合する。固定コア２０と非磁性部材３２との接合箇所および接合方法はこれに限定されない。この工程によって固定コア２０と非磁性部材３２とを接合することが、特許請求の範囲に記載の「固定コアの外周に薄肉部材を一体的に設ける」ことに相当する。 Next, the manufacturing process of the electromagnetic valve device 10 will be described.
First, the fixed core 20 is assembled to the nonmagnetic member 32 so that the small diameter portion 23 of the fixed core 20 is fitted into the inner periphery of the nonmagnetic member 32.
Next, the fixed core 20 and the nonmagnetic member 32 are joined to each other at the upper end surface 32a of the nonmagnetic member 32 by welding or the like. The joining location and joining method of the fixed core 20 and the nonmagnetic member 32 are not limited to this. Joining the fixed core 20 and the nonmagnetic member 32 by this step corresponds to “providing a thin member integrally on the outer periphery of the fixed core” recited in the claims.

次に、非磁性部材３２、樹脂カバー４４、固定コア２０、およびハウジング１２を除く部材を組み付けた状態で、可動コア３０の外周に非磁性部材３２を嵌め込むように、フランジ１８に固定コア２０および非磁性部材３２を組み付ける。
次に、非磁性部材３２の下端面３２ｂでフランジ１８と非磁性部材３２とを溶接などにより接合する。フランジ１８と非磁性部材３２との接合箇所および接合方法はこれに限定されない。 Next, in a state where the members excluding the nonmagnetic member 32, the resin cover 44, the fixed core 20, and the housing 12 are assembled, the fixed core 20 is fixed to the flange 18 so that the nonmagnetic member 32 is fitted to the outer periphery of the movable core 30. Then, the nonmagnetic member 32 is assembled.
Next, the flange 18 and the nonmagnetic member 32 are joined to each other at the lower end surface 32b of the nonmagnetic member 32 by welding or the like. The joining location and joining method of the flange 18 and the nonmagnetic member 32 are not limited to this.

次に、固定コア２０および非磁性部材３２の外周に樹脂カバー４４を嵌め込む。
次に、ハウジング１２の嵌合孔１５から固定コア２０の小径部２１が露出し、樹脂カバー４４の突部４８とハウジング１２の切り欠き１４とが嵌合する姿勢で、脚部１６の端部１６ａがフランジ部材１８に当接するまで、ハウジング１２を固定コア２０の方向に押し込む。これにより、ハウジング１２の嵌合孔１５に固定コア２０の小径部２１が圧入される。このとき小径部２１の側壁２１ａの硬度は、嵌合孔１５の側壁１５ａの硬度と比較して高くなっているため、ハウジング１２の嵌合孔１５に固定コア２０の小径部２１を圧入するときに生じる凝着力は小さい。
次に、ハウジング１２とフランジ部材１８とを端部１６ａで溶接などにより接合する。 Next, the resin cover 44 is fitted on the outer periphery of the fixed core 20 and the nonmagnetic member 32.
Next, the end portion of the leg portion 16 is positioned so that the small diameter portion 21 of the fixed core 20 is exposed from the fitting hole 15 of the housing 12 and the protrusion 48 of the resin cover 44 and the notch 14 of the housing 12 are fitted. The housing 12 is pushed in the direction of the fixed core 20 until 16a contacts the flange member 18. As a result, the small diameter portion 21 of the fixed core 20 is press-fitted into the fitting hole 15 of the housing 12. At this time, since the hardness of the side wall 21 a of the small diameter portion 21 is higher than the hardness of the side wall 15 a of the fitting hole 15, the small diameter portion 21 of the fixed core 20 is press-fitted into the fitting hole 15 of the housing 12. The adhesion force that occurs is small.
Next, the housing 12 and the flange member 18 are joined by welding or the like at the end 16a.

以上説明した本発明の一実施形態では、ハウジング１２の嵌合孔１５の側壁１５ａと小径部２１の側壁２１ａとに硬度差を設けているので、嵌合孔１５に固定コア２０の小径部２１を圧入する際に生じる凝着力を低減できる。そのため、嵌合孔１５に固定コア２０の小径部２１を圧入する際の圧入荷重を適正に保つことができる。したがって、非磁性部材３２は圧入荷重により変形することがなく、固定コア２０が可動コア３０側に大きく移動することがないため、固定コア２０と可動コア３０との間に適正なギャップを確保することができる。また嵌合孔１５の内径と固定コア２０の小径部２１の外径との公差を厳しく管理する必要がないので、ハウジング１２および固定コア２０を容易に加工することができる。
また、本発明の一実施形態では、固定コア２０の小径部２１の側壁２１ａに対してショットブラスト加工を施して、小径部２１の側壁２１ａの硬度をハウジング１２の嵌合孔１５の側壁１５ａの硬度と比較して高くすることにより、嵌合孔１５の側壁１５ａと小径部２１の側壁２１ａとに硬度差を設けることができる。 In the embodiment of the present invention described above, since the hardness difference is provided between the side wall 15a of the fitting hole 15 of the housing 12 and the side wall 21a of the small diameter part 21, the small diameter part 21 of the fixed core 20 is provided in the fitting hole 15. It is possible to reduce the adhesive force generated when press-fitting. Therefore, the press-fitting load when the small-diameter portion 21 of the fixed core 20 is press-fitted into the fitting hole 15 can be properly maintained. Therefore, the nonmagnetic member 32 is not deformed by the press-fit load, and the fixed core 20 does not move greatly toward the movable core 30, so that an appropriate gap is secured between the fixed core 20 and the movable core 30. be able to. Further, since it is not necessary to strictly manage the tolerance between the inner diameter of the fitting hole 15 and the outer diameter of the small diameter portion 21 of the fixed core 20, the housing 12 and the fixed core 20 can be easily processed.
In one embodiment of the present invention, the side wall 21 a of the small diameter portion 21 of the fixed core 20 is shot blasted so that the hardness of the side wall 21 a of the small diameter portion 21 is the same as that of the side wall 15 a of the fitting hole 15 of the housing 12. By making it higher than the hardness, a hardness difference can be provided between the side wall 15 a of the fitting hole 15 and the side wall 21 a of the small diameter portion 21.

（他の実施形態）
上記の一実施形態では、ハウジング１２および固定コア２０は同一の磁性材で形成されているとして説明したが、同種の磁性材でもよい。具体的には例えば、ハウジング１２および固定コア２０は異なるフェライト系のステンレス鋼で形成してもよい。
また、上記の一実施形態では、薄肉部材としての非磁性部材３２を非磁性材で形成するとして説明したが、薄肉部材を磁性材で形成してもよい。そのときは、固定コア２０と薄肉部材とを一体成形してもよい。 (Other embodiments)
In the above embodiment, the housing 12 and the fixed core 20 have been described as being formed of the same magnetic material, but the same kind of magnetic material may be used. Specifically, for example, the housing 12 and the fixed core 20 may be formed of different ferritic stainless steels.
In the above embodiment, the nonmagnetic member 32 as a thin member is described as being formed of a nonmagnetic material. However, the thin member may be formed of a magnetic material. At that time, the fixed core 20 and the thin member may be integrally formed.

また、上記の一実施形態では、固定コア２０の小径部２１の側壁２１ａの硬度を嵌合孔１５の側壁１５ａの硬度と比較して高くするとして説明したが、嵌合孔１５の側壁１５ａの硬度を固定コア２０の小径部２１の側壁２１ａの硬度と比較して高くしてもよい。そのときは、嵌合孔１５の側壁１５ａに対してショットブラスト加工を施せばよい。またハウジング１２または固定コア２０に対して熱処理等を施して、ハウジング１２または固定コア２０の全体の硬度を高くすることにより、固定コア２０の小径部２１の側壁２１ａと嵌合孔１５の側壁１５ａとに硬度差を設けてもよい。またハウジング１２と固定コア２０とを異なる硬度の磁性材で形成することにより、硬度差を設けてもよい。   In the above embodiment, the hardness of the side wall 21a of the small diameter portion 21 of the fixed core 20 has been described as being higher than the hardness of the side wall 15a of the fitting hole 15, but The hardness may be higher than the hardness of the side wall 21 a of the small diameter portion 21 of the fixed core 20. At that time, the shot blasting may be performed on the side wall 15a of the fitting hole 15. Further, the housing 12 or the fixed core 20 is subjected to a heat treatment or the like to increase the overall hardness of the housing 12 or the fixed core 20, whereby the side wall 21 a of the small diameter portion 21 of the fixed core 20 and the side wall 15 a of the fitting hole 15. And a hardness difference may be provided. Further, a hardness difference may be provided by forming the housing 12 and the fixed core 20 with magnetic materials having different hardnesses.

また、上記の一実施形態では、固定コア２０に非磁性部材３２を接合した後にフランジ部材１８に固定コア２０および非磁性部材３２を接合したが、フランジ部材１８に非磁性部材３２のみを接合した後に、フランジ部材１８および非磁性部材３２に固定コア２０を接合してもよい。
また、上記の一実施形態では、ショットブラスト加工を施すことにより嵌合孔１５の側壁１５ａと固定コア２０の小径部２１の側壁２１ａとに硬度差を設けたが、切削加工にともなう加工硬化によって硬度差を設けてもよいし、加工対象を塑性変形させる加工にともなう加工硬化によって硬度差を設けてもよい。 In the above embodiment, the non-magnetic member 32 is joined to the fixed core 20 and then the fixed core 20 and the non-magnetic member 32 are joined to the flange member 18. However, only the non-magnetic member 32 is joined to the flange member 18. The fixed core 20 may be joined to the flange member 18 and the nonmagnetic member 32 later.
In the above embodiment, the shot blasting process is used to provide a difference in hardness between the side wall 15a of the fitting hole 15 and the side wall 21a of the small-diameter portion 21 of the fixed core 20, but by work hardening accompanying the cutting process. A difference in hardness may be provided, or a difference in hardness may be provided by work hardening accompanying a process of plastically deforming the object to be processed.

本発明の一実施形態による電磁弁装置を示す模式的断面図である。It is typical sectional drawing which shows the solenoid valve apparatus by one Embodiment of this invention. 従来の電磁弁装置を示す模式的断面図である。It is typical sectional drawing which shows the conventional solenoid valve apparatus.

符号の説明Explanation of symbols

１０ 電磁弁装置、１２ ハウジング、１５ 嵌合孔、１５ａ 側壁、１８ フランジ部材（磁性部材）、２０ 固定コア、２１ 小径部（一端部）、２１ａ 側壁（一端部の側壁）、２３ 小径部２３（他端部）、３０ 可動コア、３２ 非磁性部材（薄肉部材）、４０ コイル DESCRIPTION OF SYMBOLS 10 Solenoid valve apparatus, 12 Housing, 15 Fitting hole, 15a Side wall, 18 Flange member (magnetic member), 20 Fixed core, 21 Small diameter part (one end part), 21a Side wall (one end side wall), 23 Small diameter part 23 ( Other end), 30 movable core, 32 non-magnetic member (thin member), 40 coil

Claims (3)

ハウジングと、
前記ハウジングに形成している嵌合孔に軸方向の一端部を圧入される固定コアと、
前記固定コアの前記軸方向の他端部と向き合う可動コアと、
前記可動コアの外周を覆い前記固定コア、前記可動コアおよび前記ハウジングと磁気回路を構成する磁性部材と、
前記固定コアおよび前記可動コアの外周を覆い、前記固定コアと前記磁性部材との間に設けられている薄肉部材と、
前記固定コア、前記可動コアおよび前記薄肉部材の外周側、かつ前記ハウジングの内周側に設置され、前記可動コアを駆動する磁力を発生するコイルとを備え、
前記ハウジングおよび前記固定コアは、同種の磁性材で形成され、
前記嵌合孔の側壁の硬度と、前記固定コアの前記一端部の側壁の硬度とが異なることを特徴とする電磁弁装置 A housing;
A fixed core that is press-fitted in an axial end into a fitting hole formed in the housing;
A movable core facing the other axial end of the fixed core;
A magnetic member that covers an outer periphery of the movable core and forms a magnetic circuit with the fixed core, the movable core, and the housing;
Covering the outer periphery of the fixed core and the movable core, and a thin-walled member provided between the fixed core and the magnetic member;
A coil that is installed on the outer peripheral side of the fixed core, the movable core and the thin-walled member, and on the inner peripheral side of the housing, and generates a magnetic force for driving the movable core;
The housing and the fixed core are formed of the same kind of magnetic material,
The solenoid valve device characterized in that the hardness of the side wall of the fitting hole is different from the hardness of the side wall of the one end of the fixed core. 前記固定コアの外周に前記薄肉部材を一体的に設けることを特徴とする請求項１に記載の電磁弁装置。   The electromagnetic valve device according to claim 1, wherein the thin member is integrally provided on an outer periphery of the fixed core. 前記嵌合孔の前記側壁または前記一端部の前記側壁をショットブラストにより表面加工することを特徴とする請求項１または２に記載の電磁弁装置。   The electromagnetic valve device according to claim 1 or 2, wherein the side wall of the fitting hole or the side wall of the one end portion is subjected to surface processing by shot blasting.
JP2004161077A 2004-05-31 2004-05-31 Solenoid valve device Expired - Lifetime JP4126557B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015128974A (en) * 2014-01-09 2015-07-16 株式会社ダイセル gas generator

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015128974A (en) * 2014-01-09 2015-07-16 株式会社ダイセル gas generator
WO2015105067A1 (en) * 2014-01-09 2015-07-16 株式会社ダイセル Gas generator
CN105873800A (en) * 2014-01-09 2016-08-17 株式会社大赛璐 Gas generator
KR20160106592A (en) * 2014-01-09 2016-09-12 주식회사 다이셀 Gas generator
US9944249B2 (en) 2014-01-09 2018-04-17 Daicel Corporation Gas generator
CN105873800B (en) * 2014-01-09 2019-06-21 株式会社大赛璐 Gas generator
KR102204062B1 (en) 2014-01-09 2021-01-18 주식회사 다이셀 Gas generator

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