Patent ID: 9004445
Filing Date: 2015-04-14
Classification: F16K,H01F,H02K

Abstract:
1. A solenoid actuator comprising: a stator core, which has a press-fit hole that is recessed in the stator core, wherein the press-fit hole is closed by a hole end wall portion of the stator core at one axial end of the press-fit hole, which is opposite from an opening end of the press-fit hole; a movable member that is axially reciprocatable relative to the stator core; and a stopper that is press-fitted into the press-fit hole through the opening end of the press-fit hole, wherein: the stopper limits movement of the movable member on an axial side of the stopper, which is axially opposite from the hole end wall portion of the stator core; a press-fit space is formed between the hole end wall portion of the stator core and a closing end wall portion of the stopper, which are axially opposed to each other in the press-fit hole and seals the press-fit space from an outside of the press-fit space; and at least one recess is formed in the closing end wall portion of the stopper, which is axially opposed to the hole end wall portion of the stator core and axially contacts the hole end wall portion of the stator core, to increase a volume of the press-fit space formed between the hole end wall portion of the stator core and the closing end wall portion of the stopper.