ELECTROMAGNETIC VALVE

• Main Authors: YASUDA TOMOHIRO, KAI FUMIO
• Format: Patent
• Language: English; Japanese
• Published: 08.12.2016
• Subjects: ACTUATING-FLOATS; BLASTING; COCKS; DEVICES FOR VENTING OR AERATING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; TAPS; THERMAL INSULATION IN GENERAL; VALVES; WEAPONS

PROBLEM TO BE SOLVED: To provide an electromagnetic valve having a structure which can inhibit adhesion of foreign matter to a permanent magnet and so forth while suppressing increase in size.SOLUTION: One aspect of an electromagnetic valve of the present invention comprises: a solenoid having a cylindrical guide part 30 which is centered on the central axis extending in the axial direction; a movable element 50 which has a magnetic body part and moves in the axial direction radially inside the guide part; a cover 40 which houses the solenoid and the movable element and has a hole part; a pin 70 which is positioned in the hole part and moves with movement of the movable element; a cylindrical pin guide member 31 which movably holds the pin and is supported by the cover; and a valve part 60 which is provided outside of the cover and is opened and closed with movement of the movable element and the pin. The cover has a cylindrical part 43 made of magnetic material which encloses the radial outside of the solenoid, and the movable element is provided with a through hole 51 which penetrates the movable element in the axial direction.SELECTED DRAWING: Figure 1 【課題】大型化することを抑制しつつ、永久磁石等への異物の付着を抑制できる構造を有する電磁弁を提供する。【解決手段】本発明の電磁弁の一つの態様は、軸方向に延びる中心軸を中心とする筒状のガイド部３０を有するソレノイドと、磁性体部を有し、ガイド部の径方向内側を軸方向に移動する可動子５０と、ソレノイド及び可動子を収容し、孔部を有するカバー４０と、孔部に位置し、可動子の移動に伴って移動するピン７０と、ピンを移動可能に保持し、カバーに支持された筒状のピンガイド部材３１と、カバーの外部に設けられ、可動子及びピンの移動とともに開閉される弁部６０と、を備え、カバーは、ソレノイドの径方向外側を囲む磁性体製の筒状部４３を有し、可動子には、可動子を軸方向に貫通する貫通孔５１が設けられている。【選択図】図１