SOLENOID DEVICE AND MANUFACTURING METHOD OF THE SAME

• Main Authors: SUZUKI KENGO, ANDO MOTOYOSHI, ISHIDA TAKAO
• Format: Patent
• Language: English; Japanese
• Published: 16.08.2018
• Subjects: ACTUATING-FLOATS; BASIC ELECTRIC ELEMENTS; BLASTING; COCKS; DEVICES FOR VENTING OR AERATING; ELECTRICITY; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; INDUCTANCES; LIGHTING; MAGNETS; MECHANICAL ENGINEERING; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; TAPS; THERMAL INSULATION IN GENERAL; TRANSFORMERS; VALVES; WEAPONS

PROBLEM TO BE SOLVED: To suppress a foreign matter from entering a solenoid device due to breathing, which results from plunger movement.SOLUTION: A solenoid device 1 includes a breathing hole cover 50 that covers an opening 42a of a breathing hole 42 from outside a volume changeable chamber 41, also forms a space 51 communicating with the breathing hole 42, and allows communication between the space 51 and an outside space 52. In this configuration, exchange of oil with the outside space 52, resulting from breathing, is conducted by the space 51. Therefore, even if a foreign matter is sucked into the space during a sucking step, the foreign matter can be discharged outside the space in a discharge step. Accordingly, a risk of sucking the foreign matter into the volume changeable chamber 41 via the breathing hole 42 can be reduced, compared to a case where exchange of oil with the outside space 52, resulting from breathing, is conducted by the breathing hole 42 without the space 51.SELECTED DRAWING: Figure 2 【課題】プランジャの移動に伴う呼吸によって異物がソレノイド装置内に侵入するのを抑制する。【解決手段】ソレノイド装置１は、呼吸孔４２の開口４２ａを容積変動室４１の外側から覆うとともに、呼吸孔４２に連通する空間５１と、この空間５１と外部空間５２とを連通する開口５１ａとを形成する呼吸孔カバー５０を備える。これによれば、呼吸に伴う外部空間５２とのオイルのやり取りをするのは空間５１となるため、吸い込み行程で空間内に異物を吸い込んでしまったとしても、吐出行程で異物を空間外に吐き出すことができる。このため、呼吸に伴う外部空間５２とのオイルのやりとりを空間５１を介さずに呼吸孔４２で実施する場合と比較して、呼吸孔４２を介する容積変動室４１への異物吸い込みリスクを低減できる。【選択図】図２