Electromagnetic actuator, active vibration damper using the same, and method of manufacturing electromagnetic actuator

Abstract

An electromagnetic actuator including: a stator and a mover configured to have an oscillation force exerted between them, the stator and the mover being arranged in a direction orthogonal to a direction of oscillation with a space in between; and at least one plate spring connecting the stator and the mover to each other, the plate spring permitting relative displacement of the stator and the mover in the direction of oscillation while positioning the stator and the mover with respect to each other in the direction orthogonal to the direction of oscillation, wherein at least one through hole piercing the plate spring in a thickness direction is formed in a portion of the plate spring that corresponds to the space between the stator and the mover.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to Japanese Patent Application No. 2016-106774 filed on May 27, 2016, entitled "Electromagnetic Actuator, Active Vibration Absorber Using The Same, and Manufacturing Method," the entirety of which The contents are incorporated herein by reference. technical field [0003] The present invention relates to an electromagnetic actuator, an active shock absorber using the electromagnetic actuator, and a method of manufacturing the electromagnetic actuator, wherein the electromagnetic actuator has a fixing member that vibrates mutually and a movable The movable member has a structure in which the fixed member and the movable member are elastically connected to each other by a leaf spring. Background technique [0004] Conventionally, an electromagnetic actuator including a stationary element and a movable element that vibrate mutually is known. For example, as shown in Japanese Unexamined P...

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Problems solved by technology

[0006] However, if a leaf spring extending perpendicularly to the excitation direction is provided in the housing of the electromagnetic actuator as in Patent Document 1, the space in the housing will be partitioned by the leaf spring. The manufacturing of the fixed and movable parts is held in place with high precision, and high dimensional accuracy is required for parts related to the relative positions of the fixed and movable parts

Furthermore, since the leaf spring covers the fixed part and the movable part, it is also difficult to confirm the internal confirmation such as the gap between the fixed part and the movable part by visual inspection or using a measuring laser, an endoscope, etc. operate

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