ELECTROMAGNETIC VALVE AND HIGH PRESSURE FUEL PUMP USING THE SAME

• Main Author: ONISHI KAZUHIRO
• Format: Patent
• Language: English; Japanese
• Published: 25.11.2022
• 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; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; TAPS; THERMAL INSULATION IN GENERAL; VALVES; WEAPONS

To provide a technology which can reduce collision noise of an armature when an electromagnetic valve is closed.SOLUTION: An electromagnetic valve 60 according to one embodiment of the disclosure includes a valve member 64, a fixed core 80, a coil 90, and an armature 74. The valve member reciprocates to separate from a valve seat 62a or be seated on the valve seat and thereby open or close a passage 212. The coil is energized to generate magnetic flux. The armature reciprocates with the valve member and is attracted to the fixed core side by the magnetic flux generated by the coil. A direction in which the valve member is seated on the valve seat is a direction in which the armature is separated from the valve member. A bottomed insertion hole 74a is formed at one of the armature and the valve member. An insertion part 64a which is inserted into the insertion hole so as to be movable in a reciprocating direction of the valve member and the armature is formed at the other of the armature and the valve member.SELECTED DRAWING: Figure 2 【課題】電磁弁の閉弁時においてアーマチャの衝突音を低減する技術を提供する。【解決手段】本開示の一つの態様による電磁弁６０は、弁部材６４と固定コア８０とコイル９０とアーマチャ７４とを備える。弁部材は、往復移動して弁座６２ａから離座または弁座に着座することよりに流路２１２を開閉する。コイルは、通電されることにより磁束を発生する。アーマチャは、弁部材とともに往復移動し、コイルが発生する磁束により固定コア側に吸引され、弁部材が弁座に着座する方向が弁部材から離れる方向である。アーマチャまたは弁部材の一方に有底の挿入穴７４ａが形成されており、アーマチャまたは弁部材の他方に、弁部材とアーマチャとの往復移動方向に移動可能に挿入穴に挿入される挿入部６４ａが形成されている。【選択図】図２