Patent ID: 9068667
Filing Date: 2015-06-30
Classification: B60K,F02D,F02M,F16K

Abstract:
1. An electromagnetic valve comprising: a flow passage through which fluid flows; a valve member that reciprocates in its axial direction to open or close the flow passage; an actuator that includes: a coil which is configured to generate magnetic force upon supply of electric power; and a movable core which is displaced in the axial direction due to the magnetic force generated by the coil so as to drive the valve member; an intermediate member that is disposed between the valve member and the movable core; a connecting member that connects together the valve member, the movable core, and the intermediate member in an integrally movable manner; a housing that accommodates the valve member, the movable core, the intermediate member, and the connecting member in a reciprocatable manner and that includes a hollow part between the housing and the actuator, the hollow part communicating with the flow passage; and a dividing unit that is provided for the valve member or the intermediate member and includes a through hole which passes through the dividing unit in its axial direction, wherein: the dividing unit divides the hollow part between a communicating chamber that is capable of communicating with the flow passage, and a cancel chamber that is cut off from an outside thereof; the intermediate member includes a communicating passage between the intermediate member and the movable core; the communicating passage communicates between the flow passage and the cancel chamber via the through hole and the communicating chamber; the valve member includes: an annular valving element that is engageable with an opening circumferential edge of the flow passage; and a cylindrical valving element supporting member that supports the valving element; the valving element is fixed to an outer periphery of the valving element supporting member; the movable core includes an axial hole that passes through the movable core in its axial direction; the axial hole communicates between a pre-movable core space from which fluid flows toward the movable core, and a post-movable core space into which fluid flows from the movable core in the axial direction; the movable core further includes a press-fitting hole which is a part of the axial hole on the intermediate member-side; the intermediate member further includes a first insertion hole that is located coaxially with the press-fitting hole and that passes through the intermediate member in an axial direction thereof; and the valving element supporting member includes a second insertion hole that is located coaxially with the press-fitting hole and the first insertion hole and that passes through the valving element supporting member in the axial direction.