JP4611259B2 - solenoid valve - Google Patents

solenoid valve Download PDF

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Publication number
JP4611259B2
JP4611259B2 JP2006213628A JP2006213628A JP4611259B2 JP 4611259 B2 JP4611259 B2 JP 4611259B2 JP 2006213628 A JP2006213628 A JP 2006213628A JP 2006213628 A JP2006213628 A JP 2006213628A JP 4611259 B2 JP4611259 B2 JP 4611259B2
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drive unit
valve
solenoid valve
rod
valve body
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JP2008039043A (en
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雅俊 上田
済文 菅原
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Description

この発明は、電磁力を受けて摺動する駆動部と、弁座に対し接離するように前記駆動部の先端に設けられた弁体とを有する電磁弁に関するものである。   The present invention relates to an electromagnetic valve having a driving portion that slides by receiving electromagnetic force and a valve body provided at the tip of the driving portion so as to be in contact with and away from a valve seat.

従来の電磁弁は、特許文献１に示されるように、通電されたコイルにより発生する電磁力で可動子を移動させ、この可動子の先端部に設けた弁体を弁座に当接させて閉弁し、コイルへの通電を遮断することで、予め付与された付勢力で可動子を復元させて開弁させている。   As disclosed in Patent Document 1, a conventional solenoid valve moves a mover by electromagnetic force generated by an energized coil, and a valve body provided at the tip of the mover is brought into contact with a valve seat. By closing the valve and de-energizing the coil, the movable element is restored by the biasing force applied in advance, and the valve is opened.

特開２００１−２２７６７１号公報JP 2001-227671 A

従来の電磁弁は、上記のように構成されているので、弁体を弁座に押し付けてシール性を確保するため、コイルにより発生する電磁力が強く、前記電磁力により駆動部が加速されるため、前記駆動部に設けられた弁体が弁座に当接する時の音（作動音）や振動が大きいものであった。このため、このような電磁弁を車体に取り付けた場合、作動音や振動による不快感を搭乗者に与えるという課題があった。   Since the conventional solenoid valve is configured as described above, the electromagnetic force generated by the coil is strong and the drive unit is accelerated by the electromagnetic force in order to ensure the sealing performance by pressing the valve body against the valve seat. For this reason, the sound (actuation sound) and vibration when the valve body provided in the drive unit comes into contact with the valve seat are large. For this reason, when such a solenoid valve is attached to the vehicle body, there has been a problem of giving the passenger an uncomfortable feeling due to operating noise or vibration.

この発明は上記のような課題を解決するためになされたもので、弁体が弁座に当接するときの作動音を低減した電磁弁を得ることを目的とする。   The present invention has been made to solve the above-described problems, and an object of the present invention is to obtain an electromagnetic valve with reduced operating noise when the valve body comes into contact with the valve seat.

この発明に係る電磁弁は、電磁力を受けて軸方向に摺動する駆動部と、弁座に対し接離するように駆動部の先端に設けられた弁体とを有する電磁弁において、駆動部の摺動過程で駆動部に付与された軸方向駆動力により該駆動部を回動させるように、駆動部と案内部との対向面に相対的に設けた雄ねじと雌ねじからなる動作変換手段を備え、動作変換手段は、閉弁直前から閉弁直後の間で駆動部に直線的な摺動力のみを付与するよう構成されているものである。 An electromagnetic valve according to the present invention is an electromagnetic valve having a drive unit that receives an electromagnetic force and slides in an axial direction, and a valve body provided at the tip of the drive unit so as to be in contact with and away from the valve seat. Motion conversion means comprising a male screw and a female screw provided relatively to the opposing surfaces of the drive unit and the guide unit so that the drive unit is rotated by an axial driving force applied to the drive unit during the sliding process of the unit It includes a motion conversion means, Ru der those configured to grant only linear sliding force to the driving unit between the closed shortly before after closing.

この発明によれば、先端に弁体を有する駆動部を摺動過程で回動させる動作変換手段を備え、閉弁直前から閉弁直後の間で駆動部に直線的な摺動力のみを付与するよう構成されているので、前記駆動部が直線的に摺動移動する場合に比べ、弁体が弁座に当接するときの衝撃力が弱められ、弁体が弁座に当接するときの作動音を低減する効果がある。また、閉弁直前から閉弁直後の間で駆動部に直線的な摺動力のみ付与されるので、弁体は回動せずに弁座に当接し傷が発生しないという効果がある。 According to this invention, the operation conversion means for rotating the drive part having the valve body at the tip in the sliding process is provided , and only the linear sliding force is applied to the drive part immediately before the valve closing and immediately after the valve closing. which is configured as, compared to the case where the drive unit is linearly sliding movement, the impact force is weakened when the valve body contacts the valve seat, operation sound when the valve body abuts against the valve seat There is an effect of reducing. Further, since only a linear sliding force is applied to the drive unit immediately before the valve closing and immediately after the valve closing, there is an effect that the valve body does not rotate but abuts against the valve seat and does not cause any damage.

以下、この発明を実施するための最良の形態について、添付の図面に従って説明する。
実施の形態１．
図１は、本発明の実施の形態１による電磁弁の構成の一例を示した断面図である。この電磁弁は、流体の通路と弁座となるシール部１１を備えた上部筐体２２と、前記弁座に対し接離する弁体３を設けた駆動部等を収容する下部筐体２３からなる。また、上部筐体２２の内部には、その一端が弁体３ａと当接するようにスプリング８が設けられている。 The best mode for carrying out the present invention will be described below with reference to the accompanying drawings.
Embodiment 1 FIG.
FIG. 1 is a cross-sectional view showing an example of the configuration of a solenoid valve according to Embodiment 1 of the present invention. This solenoid valve includes an upper housing 22 having a fluid passage and a seal portion 11 that serves as a valve seat, and a lower housing 23 that houses a drive portion provided with a valve body 3 that contacts and separates from the valve seat. Become. Further, a spring 8 is provided inside the upper housing 22 so that one end thereof is in contact with the valve body 3a.

下部筐体２３は、鉄等の磁性体により構成されたプランジャ１と、プランジャ１と回動可能に係合されたロッド２と、ロッド２の案内部であるコア４と、前記駆動部及びコア４を収容するパイプ１２と、パイプ１２の周囲に配置され、図示しない外部の電源から供給される電流により電磁力を発生するコイル９と、プランジャ１とストッパ１３との間に介在するスプリング１１と、ストッパ１３とを収容する。また、プレート５は、その中央部にコア４を突出させる開孔部５ａを設けている。   The lower housing 23 includes a plunger 1 made of a magnetic material such as iron, a rod 2 rotatably engaged with the plunger 1, a core 4 serving as a guide portion of the rod 2, the drive unit, and the core. 4, a pipe 12 that is arranged around the pipe 12, generates a magnetic force by a current supplied from an external power source (not shown), and a spring 11 that is interposed between the plunger 1 and the stopper 13. The stopper 13 is accommodated. Further, the plate 5 is provided with an opening 5a for projecting the core 4 at the center thereof.

プランジャ１とロッド２は駆動部を構成し、ロッド２の先端には、弁体３が設けられている。弁体３はゴム等の弾性体からなる封止部３ａと、ロッド２の先端と係合する係合部３ｂから構成されている。前記駆動部とその案内部であるコア４の対向面、すなわちロッド２の外周面及びコア４の内周面には、コイル９の電磁力によりプランジャ１に付与された軸方向の駆動力によりロッド２を回動させるように、相対的に設けた傾斜の緩やかな雄ねじ部６と雌ねじ部７からなる動作変換手段が設けられている。また図１中の矢印Ａは、気体や液体等の流体の流れを示している。   The plunger 1 and the rod 2 constitute a drive unit, and a valve body 3 is provided at the tip of the rod 2. The valve body 3 includes a sealing portion 3 a made of an elastic body such as rubber and an engaging portion 3 b that engages with the tip of the rod 2. On the opposing surface of the core 4 which is the driving portion and its guide portion, that is, the outer peripheral surface of the rod 2 and the inner peripheral surface of the core 4, the rod is driven by the axial driving force applied to the plunger 1 by the electromagnetic force of the coil 9. An operation converting means comprising a male screw part 6 and a female screw part 7 which are relatively inclined and are provided so as to rotate 2 is provided. An arrow A in FIG. 1 indicates the flow of a fluid such as gas or liquid.

次に動作について説明を行う。
図示しない外部の電源から、コイル９に電流が供給されると、コイル９に発生した電磁力により、磁性体であるプランジャ１が閉弁方向の力を受けて、プランジャ１は、閉弁方向にパイプ１２の内面を摺動する。プランジャ１の摺動に伴い、ロッド２の外周面に設けた雄ねじ部６及びコア４の内周面に設けた雌ねじ部７から構成される動作変換手段により、ロッド２が回動しながら摺動する。ロッド２が回動しながら閉弁方向に摺動すると、ロッド２に設けた弁体３がロッド２と同様に回動しながら閉弁方向に移動する。そして弁体３の封止部３ａが回動しながらシール部１０に当接して流体の流れを遮断する。 Next, the operation will be described.
When a current is supplied to the coil 9 from an external power source (not shown), the plunger 1 which is a magnetic body receives a force in the valve closing direction due to the electromagnetic force generated in the coil 9, and the plunger 1 moves in the valve closing direction. The inner surface of the pipe 12 is slid. As the plunger 1 slides, the rod 2 is slid while being rotated by the motion converting means composed of the male screw portion 6 provided on the outer peripheral surface of the rod 2 and the female screw portion 7 provided on the inner peripheral surface of the core 4. To do. When the rod 2 slides in the valve closing direction while rotating, the valve body 3 provided on the rod 2 moves in the valve closing direction while rotating in the same manner as the rod 2. And the sealing part 3a of the valve body 3 is contact | abutted to the seal part 10 rotating, and the flow of the fluid is interrupted | blocked.

以上のように、実施の形態１による電磁弁は、動作変換手段を構成する雄ねじ部６及び雌ねじ部７を、それぞれロッド２の外周面及びコア４の内周面に設けたので、プランジャ１及びロッド２から構成される駆動部が、回動しながら閉弁方向へ摺動し、閉弁方向の摺動速度が低減され、封止部３ａとシール部１０が当接するときに生ずる作動音及び振動を低減できる効果がある。また、封止部３ａとシール部１０が当接するときに生ずる衝撃を低減できるため、封止部３ａの磨耗が減り、寿命が長くなる効果がある。また、ロータリー式の電磁弁やステッピングモータを使用する電磁弁に比べ、構造が非常に簡単であり、製造コストを低減できる効果がある。   As described above, in the solenoid valve according to the first embodiment, the male screw portion 6 and the female screw portion 7 constituting the motion converting means are provided on the outer peripheral surface of the rod 2 and the inner peripheral surface of the core 4, respectively. The driving portion constituted by the rod 2 slides in the valve closing direction while rotating, the sliding speed in the valve closing direction is reduced, and the operation sound generated when the sealing portion 3a and the seal portion 10 come into contact with each other. There is an effect of reducing vibration. Moreover, since the impact which arises when the sealing part 3a and the seal part 10 contact | abut can be reduced, there exists an effect which wear of the sealing part 3a reduces and a lifetime becomes long. In addition, compared with a solenoid valve using a rotary solenoid valve or a stepping motor, the structure is very simple and the manufacturing cost can be reduced.

実施の形態２．
図２は、本発明の実施の形態２による電磁弁の構成の一例を示した図であり、図２（ａ）は、断面図、図２（ｂ）は、その電磁弁のスリーブ１４及び周辺部の拡大断面図である。この場合、ロッド２はスリーブ１４の内面の雌ねじ部７に対応する位置の径を太くして雄ねじ部６を設けてもよい。また、雄ねじ部６は別に作成したのちロッド２に取り付けて一体としても良い。また、スリーブ１４は、例えばナイロン等の樹脂で形成する。なお、図１にて説明した構成と同様の構成には同一の符号を付して、重複説明を省略する。 Embodiment 2. FIG.
2A and 2B are diagrams showing an example of the configuration of the solenoid valve according to the second embodiment of the present invention. FIG. 2A is a cross-sectional view, and FIG. 2B is a sleeve 14 of the solenoid valve and its surroundings. It is an expanded sectional view of a part. In this case, the rod 2 may be provided with the male screw portion 6 by increasing the diameter of the position corresponding to the female screw portion 7 on the inner surface of the sleeve 14. Further, the male screw portion 6 may be formed separately and then attached to the rod 2 to be integrated. The sleeve 14 is formed of a resin such as nylon, for example. In addition, the same code | symbol is attached | subjected to the structure similar to the structure demonstrated in FIG. 1, and duplication description is abbreviate | omitted.

この実施の形態２では、プレート５の中央部に雌ねじ部７を形成したスリーブ１４を設け、この雌ねじ部７にねじ嵌合する雄ねじ部６をロッド２に設けているので、実施の形態１のように、動作変換手段を構成するために、コア４の内周面を加工して雌ねじ部７を設ける必要がなくなり、加工が簡単になる効果がある。その他の効果は実施の形態１による電磁弁と同様である。   In the second embodiment, the sleeve 14 having the female screw portion 7 formed at the center of the plate 5 is provided, and the male screw portion 6 that is screw-fitted to the female screw portion 7 is provided on the rod 2. Thus, in order to constitute the operation converting means, there is no need to process the inner peripheral surface of the core 4 and to provide the female screw portion 7, and there is an effect that the processing is simplified. Other effects are the same as those of the solenoid valve according to the first embodiment.

また、雄ねじ６と雌ねじ７との嵌合が閉弁直前から閉弁直後の間で外れるように構成して、プランジャ１に閉弁方向への直線的な摺動力のみを付与するように構成すれば、封止部３ａが回動せずにシール部１０へ当接し、封止部３ａにスクラッチ等の傷が発生しない。また、ロッド２を介してプランジャ１から受ける力がすべて封止部３ａをシール部１０へ押し付ける向きに働くので、封止部３ａをシール部１０へ押し付ける力が強くなるため、シール性向上が可能となる。   Further, the male screw 6 and the female screw 7 are configured so that the fitting is disengaged between immediately before the valve closing and immediately after the valve closing so that only the linear sliding force in the valve closing direction is applied to the plunger 1. In this case, the sealing portion 3a does not rotate but contacts the seal portion 10, and scratches such as scratches do not occur in the sealing portion 3a. Further, since all the force received from the plunger 1 via the rod 2 works in the direction of pressing the sealing portion 3a against the seal portion 10, the force for pressing the sealing portion 3a against the seal portion 10 becomes stronger, so that the sealing performance can be improved. It becomes.

本実施の形態２のように、雄ねじ６と雌ねじ７との嵌合を閉弁直前から閉弁直後の間で外れるように構成した場合は、開弁のときには、雄ねじ部６と雌ねじ部７を再度嵌合させる必要があるが、雄ねじ部６が雌ねじ部７と嵌合する位置（嵌合位置）からずれた状態で雌ねじ部７と当接して、雌ねじ部７に再嵌合しないことが考えられる。このため、図２（ｃ）に示すように、スリーブ１４の端面に、中心方向に向かってその径が細くなるテーパーを設けた再嵌合ガイド部２１を設ける必要がある。この再嵌合ガイド部２１により、雄ねじ６が嵌合位置からずれた状態で、雌ねじ部７と当接しても、バネ８の復元力により、雄ねじ部６は開弁方向に移動しながら嵌合位置に規制されて雌ねじ部７と再嵌合する。   As in the second embodiment, when the fitting between the male screw 6 and the female screw 7 is configured to be disengaged immediately before the valve closing and immediately after the valve closing, the male screw portion 6 and the female screw portion 7 are connected when the valve is opened. Although it is necessary to re-fit, it is considered that the male screw portion 6 is in contact with the female screw portion 7 in a state shifted from the position (fitting position) where the male screw portion 7 is fitted to the female screw portion 7 and is not re-fitted to the female screw portion 7. It is done. For this reason, as shown in FIG.2 (c), it is necessary to provide the re-fitting guide part 21 which provided the taper in which the diameter becomes small toward the center direction at the end surface of the sleeve 14. As shown in FIG. Even if the male screw 6 is in contact with the female screw 7 while the male screw 6 is displaced from the fitting position, the male screw 6 is fitted while moving in the valve opening direction due to the restoring force of the spring 8. It is regulated by the position and re-fitted with the female screw portion 7.

実施の形態３．
図３は、本発明の実施の形態３による電磁弁の構成の一例を示した図であり、図３（ａ）は、断面図、図３（ｂ）は、ロッド２に設けた突起部１６とコア４の内周面に設けたパイプ１５及びその周辺部の拡大断面図、図３（ｃ）はパイプ１５の斜視図である。この実施の形態３では、動作変換手段は、ロッド２とコア４の内周面に設けたパイプ１５とに相対的に設けた突起部１６と、突起部１６と嵌合する溝１７から構成される。この場合、図示例とは反対に、ロッド２に外周面に溝１７を設け、コア４に内周面に突起部１６を設けても良い。なお、図１にて説明した構成と同様の構成に同一の符号を付して、重複説明を省略する。 Embodiment 3 FIG.
3A and 3B are diagrams showing an example of the configuration of the solenoid valve according to Embodiment 3 of the present invention. FIG. 3A is a cross-sectional view, and FIG. 3B is a protrusion 16 provided on the rod 2. 3 is an enlarged cross-sectional view of the pipe 15 provided on the inner peripheral surface of the core 4 and its peripheral portion, and FIG. In the third embodiment, the motion converting means is composed of a protrusion 16 provided relatively to the rod 2 and the pipe 15 provided on the inner peripheral surface of the core 4, and a groove 17 fitted to the protrusion 16. The In this case, contrary to the illustrated example, the rod 2 may be provided with the groove 17 on the outer peripheral surface, and the core 4 may be provided with the protrusion 16 on the inner peripheral surface. In addition, the same code | symbol is attached | subjected to the structure similar to the structure demonstrated in FIG. 1, and duplication description is abbreviate | omitted.

図３（ｃ）の符号Ａ及び符号Ｂは、溝１７の端部を示している。パイプ１５は、溝１７のＡ端側を弁体３側にして、Ｂ端側をプランジャ１側にして、コア４の内部に組み込まれる。このパイプ１５の溝１７は、Ａ端側の曲率が大きくなり、回転角度が大きくなるので、プランジャ１とロッド２から構成される駆動部は、閉弁方向に摺動するにつれて摺動速度が低減する。また、溝１７には、ロッド２に設けられた突起部１６が嵌合しており、ロッド２の動作は、溝１７により規制され、閉弁方向に摺動しながら回動するため、摺動速度が低下し、封止部３ａがシール部１０に当接する時に摺動速度が最も遅くなる。   Symbols A and B in FIG. 3C indicate the ends of the grooves 17. The pipe 15 is incorporated in the core 4 with the A end of the groove 17 facing the valve body 3 and the B end facing the plunger 1. The groove 17 of the pipe 15 has a larger curvature on the A end side and a larger rotation angle, so that the drive speed constituted by the plunger 1 and the rod 2 decreases in sliding speed as it slides in the valve closing direction. To do. Further, the protrusion 17 provided on the rod 2 is fitted in the groove 17, and the operation of the rod 2 is regulated by the groove 17 and rotates while sliding in the valve closing direction. The speed decreases, and the sliding speed becomes the slowest when the sealing portion 3a comes into contact with the seal portion 10.

以上のように、実施の形態３による電磁弁は、ロッド２に設けた突起部１６及びコア４の内周面に設けたパイプ１５の溝１７により動作変換手段を構成し、前記溝１７のＡ端側に曲率が大きくなり、回転角度が大きくなる曲線部を設けたので、摺動速度が低減し、実施の形態１と同様の作用効果を得られる。   As described above, in the solenoid valve according to the third embodiment, the motion converting means is configured by the protrusion 16 provided on the rod 2 and the groove 17 of the pipe 15 provided on the inner peripheral surface of the core 4. Since the curved portion where the curvature is increased and the rotation angle is increased is provided on the end side, the sliding speed is reduced, and the same effect as the first embodiment can be obtained.

実施の形態４．
図４は、実施の形態４による電磁弁に使用するパイプの斜視図であり、図３にて説明した構成と同様の構成に同一の符号を付して重複説明を省略する。前記実施の形態１、実施の形態３では、駆動部を回動させながら弁体３を弁座１０に当接させているため、封止部３ａに、スクラッチ等の傷が発生する恐れがある。そこで、本実施の形態４では、曲線部のＡ端側にロッド２の軸に平行な直線部を設け閉弁直前に前記駆動部に摺動力のみを付与するようにしても良い。このように構成すれば、封止部３ａが回動せずにシール部１０へ当接するため、封止部３ａに、スクラッチ等の傷が発生しない。また、ロッド２を介してプランジャ１から受ける力がすべて封止部３ａをシール部１０へ押し付ける向きに働くので、封止部３ａをシール部１０へ押し付ける力が強くなるため、シール性向上が可能となる。その他の効果は実施の形態１と同じある。 Embodiment 4 FIG.
FIG. 4 is a perspective view of a pipe used for the electromagnetic valve according to the fourth embodiment. The same reference numerals are given to the same components as those described in FIG. In the first embodiment and the third embodiment, since the valve body 3 is brought into contact with the valve seat 10 while rotating the drive unit, scratches such as scratches may occur in the sealing unit 3a. . Therefore, in the fourth embodiment, a linear portion parallel to the axis of the rod 2 may be provided on the A end side of the curved portion so that only the sliding force is applied to the drive portion immediately before the valve is closed. If comprised in this way, since the sealing part 3a will contact | abut to the seal | sticker part 10 without rotating, the cracks, such as a scratch, will not generate | occur | produce in the sealing part 3a. In addition, since all the force received from the plunger 1 via the rod 2 works in the direction of pressing the sealing portion 3a against the seal portion 10, the force for pressing the sealing portion 3a against the seal portion 10 becomes stronger, so that the sealing performance can be improved. It becomes. Other effects are the same as those of the first embodiment.

実施の形態５．
図５は、本発明の実施の形態４による電磁弁の構成の一例を示した図であり、図５（ａ）は、断面図である。図５（ｂ）は、弁体３とロッド２との係合部及びその周辺部の拡大断面図である。なお、図１と同様の構成に同一の符号を付して、重複説明を省略する。実施の形態５による電磁弁は、ロッド２と弁体３の係合部３ｂとを分離して回動可能に構成したものである。このため、ロッド２が回動しても、スプリング８に抑えられた弁体３は回動せず、封止部３ａにスクラッチ等の傷が発生しない。また、図示していないがロッド２と係合部３ｂとの係合にブッシュやベアリング１８等を使用すれば、よりスムーズにロッド２が回動する効果がある。 Embodiment 5 FIG.
FIG. 5 is a diagram showing an example of the configuration of a solenoid valve according to Embodiment 4 of the present invention, and FIG. 5 (a) is a cross-sectional view. FIG. 5B is an enlarged cross-sectional view of the engaging portion between the valve body 3 and the rod 2 and its peripheral portion. In addition, the same code | symbol is attached | subjected to the structure similar to FIG. 1, and duplication description is abbreviate | omitted. The solenoid valve according to the fifth embodiment is configured such that the rod 2 and the engaging portion 3b of the valve body 3 are separated and turnable. For this reason, even if the rod 2 rotates, the valve body 3 held by the spring 8 does not rotate, and scratches such as scratches do not occur in the sealing portion 3a. Although not shown, if a bush, a bearing 18 or the like is used for engagement between the rod 2 and the engaging portion 3b, the rod 2 can be rotated more smoothly.

また、実施の形態５では、コア４の内周面の一部に雌ねじ部７を設け、ロッド２の雌ねじ部７に対応する部分に雄ねじ部６を設けている。このため、コア４の内周面の一部を加工すればよく、加工が簡単になる効果がある。また、実施の形態２で説明したように、ロッド２の対応する位置の径を太くして雄ねじ部６を設けてもよく、雄ねじ部６を別に作成したのちロッド２に取り付けて一体としても良い。さらに、実施の形態５では、封止部３ａに防塵手段としてダイヤフラム１９を設けたので、係合部１８へ異物が混入することがない。また、防塵手段としてダイヤフラム１９の代わりに、図６に示したようにベローズ２０等の蛇腹状のものを使用してもよい。   In the fifth embodiment, the internal thread portion 7 is provided on a part of the inner peripheral surface of the core 4, and the external thread portion 6 is provided at a portion corresponding to the internal thread portion 7 of the rod 2. For this reason, it is only necessary to process a part of the inner peripheral surface of the core 4, and there is an effect that the processing is simplified. Further, as described in the second embodiment, the male screw portion 6 may be provided by increasing the diameter of the corresponding position of the rod 2, or the male screw portion 6 may be separately formed and then attached to the rod 2 to be integrated. . Furthermore, in Embodiment 5, since the diaphragm 19 is provided as a dust-proof means in the sealing portion 3a, no foreign matter is mixed into the engaging portion 18. Further, instead of the diaphragm 19, a bellows-like member such as a bellows 20 as shown in FIG.

以上のように、実施の形態５によれば、ロッド２と弁体３の係合部１８を回動可能に構成したので、弁体３が回動せず、封止部３ａに回動によるスクラッチ等の傷が発生しない効果がある。また、コア４の内周面の一部を加工すればよいので、動作変換手段を構成するための加工が簡単になる効果がある。また、ダイヤフラム１９又はベローズ２０を封止部３ａに設けるようにしたので、係合部１８へ異物が混入しない効果がある。その他の効果については実施の形態２と同様である。なお、実施の形態５は、実施の形態１から４の全てに適用することができる。   As described above, according to the fifth embodiment, since the engaging portion 18 of the rod 2 and the valve body 3 is configured to be rotatable, the valve body 3 does not rotate and the sealing portion 3a is rotated. There is an effect that scratches such as scratches do not occur. Moreover, since a part of inner peripheral surface of the core 4 should just be processed, there exists an effect that the process for comprising a motion conversion means becomes easy. In addition, since the diaphragm 19 or the bellows 20 is provided in the sealing portion 3a, there is an effect that foreign matter is not mixed into the engaging portion 18. Other effects are the same as those of the second embodiment. The fifth embodiment can be applied to all of the first to fourth embodiments.

なお、実施の形態２と同様に閉弁直前で雄ねじ６と雌ねじ７との嵌合が外れるように構成しても良い。この場合、ロッド２を介してプランジャ１から受ける力がすべて封止部３ａをシール部１０へ押し付ける向きに働くので、封止部３ａをシール部１０へ押し付ける力が強く、確実に流体の流れを遮断できる効果がある。   As in the second embodiment, the male screw 6 and the female screw 7 may be disengaged immediately before the valve is closed. In this case, all the forces received from the plunger 1 via the rod 2 work in the direction of pressing the sealing portion 3a against the seal portion 10, so the force pressing the sealing portion 3a against the seal portion 10 is strong, and the flow of fluid is surely performed. There is an effect that can be blocked.

実施の形態１による電磁弁の構成の一例を示した断面図である。2 is a cross-sectional view showing an example of the configuration of the solenoid valve according to Embodiment 1. FIG. 実施の形態２による電磁弁の構成の一例を示した断面図である。6 is a cross-sectional view showing an example of a configuration of a solenoid valve according to Embodiment 2. FIG. 実施の形態３による電磁弁の構成の一例を示した断面図である。6 is a cross-sectional view showing an example of the configuration of a solenoid valve according to Embodiment 3. FIG. 実施の形態４による電磁弁のパイプの斜視図である。It is a perspective view of the pipe of the solenoid valve by Embodiment 4. 実施の形態５による電磁弁の構成の一例を示した断面図である。FIG. 10 is a cross-sectional view showing an example of a configuration of a solenoid valve according to a fifth embodiment. 実施の形態６による電磁弁の他の構成の一例を示した断面図である。It is sectional drawing which showed an example of the other structure of the solenoid valve by Embodiment 6.

符号の説明Explanation of symbols

１ プランジャ、２ ロッド、３ 弁体、３ａ 封止部、３ｂ 係合部、４ コア、 ５ プレート、５ａ 開孔部、６ 雄ねじ部、７ 雌ねじ部、８ スプリング、９ コイル、１０ シール部、１１ スプリング、１２ パイプ、１３ ストッパ、１４ スリーブ、１５ パイプ、１６ 突起部、１７ 溝、１８ ベアリング、１９ ダイヤフラム、２０ ベローズ、２１ 再嵌合ガイド部、２２ 上部筐体、２３ 下部筐体。   DESCRIPTION OF SYMBOLS 1 Plunger, 2 Rod, 3 Valve body, 3a Sealing part, 3b Engagement part, 4 Core, 5 Plate, 5a Opening part, 6 Male thread part, 7 Female thread part, 8 Spring, 9 Coil, 10 Seal part, 11 Spring, 12 Pipe, 13 Stopper, 14 Sleeve, 15 Pipe, 16 Projection, 17 Groove, 18 Bearing, 19 Diaphragm, 20 Bellows, 21 Re-fitting guide, 22 Upper housing, 23 Lower housing

Claims (4)

電磁力を受けて軸方向に摺動する駆動部と、弁座に対し接離するように前記駆動部の先端に設けられた弁体とを有する電磁弁において、
前記駆動部の摺動過程で前記駆動部に付与された軸方向駆動力により該駆動部を回動させるように、前記駆動部と案内部との対向面に相対的に設けた雄ねじと雌ねじからなる動作変換手段を備え、
前記動作変換手段は、閉弁直前から閉弁直後の間で前記駆動部に直線的な摺動力のみを付与するよう構成されていることを特徴とする電磁弁。 In a solenoid valve having a drive unit that receives an electromagnetic force and slides in an axial direction, and a valve body provided at the tip of the drive unit so as to be in contact with and away from the valve seat,
From a male screw and a female screw provided relatively on the opposing surfaces of the drive unit and the guide unit so that the drive unit is rotated by an axial driving force applied to the drive unit during the sliding process of the drive unit. It includes a motion conversion means comprising,
The solenoid valve according to claim 1, wherein the motion converting means is configured to apply only a linear sliding force to the drive unit between immediately before closing and immediately after closing . 前記閉弁直前から閉弁直後の間で、前記雄ねじと前記雌ねじの嵌合が外れることを特徴とする請求項１記載の電磁弁。 Wherein between the closing shortly before after closing, the solenoid valve according to claim 1, wherein the fitting of the said external thread female screw is disengaged. 前記駆動部は、前記弁体に対して回動可能に設けられていることを特徴とする請求項１または請求項２記載の電磁弁。 The drive unit according to claim 1 or claim 2 Symbol mounting solenoid valve and being provided so as to be rotatable with respect to the valve body. 前記駆動部と前記弁体との間に防塵手段を設けたことを特徴とする請求項３記載の電磁弁。 The electromagnetic valve according to claim 3 , wherein a dustproof means is provided between the drive unit and the valve body .
JP2006213628A 2006-08-04 2006-08-04 solenoid valve Expired - Fee Related JP4611259B2 (en)

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CN105370963A (en) * 2015-12-11 2016-03-02 南车株洲电机有限公司 Motor cooling ventilation controlled valve and motor cooling ventilation automatic control method

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JP5664280B2 (en) * 2011-01-26 2015-02-04 トヨタ自動車株式会社 Fuel cell system
JP7343887B2 (en) * 2019-04-12 2023-09-13 株式会社カワタ Opening/closing valve device for powder and granular materials

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JPS5771859U (en) * 1980-10-21 1982-05-01
JPS59118869U (en) * 1983-01-29 1984-08-10 株式会社東芝 electric expansion valve
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105370963A (en) * 2015-12-11 2016-03-02 南车株洲电机有限公司 Motor cooling ventilation controlled valve and motor cooling ventilation automatic control method

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