Shinko Electric Company, Ltd.

Sinfonia Technology Co., Ltd.

Takashi Onoue

Takayoshi Fujii

Hiroshi Nakagawa

Takashi Fukunaga

Hideaki Moriya

Katsuyoshi Nakano

Yushi Sato

Yasushi Muragishi

Masaaki Narihisa

Yasuhiro Sakai

Takeo Ito

Takeshi Tomizaki

Hidetoshi Katada

Yaushi Muragishi

The linear actuator includes an inner core (), and an outer core () provided outside the inner core in a radial direction while being supported by a pair of flat springs (and). Permanent magnets (and) are formed at one of the inner core and the outer core, and magnetic pole portions (and) are formed at the other of the inner core and the outer core to face the permanent magnet with predetermined gaps formed therebetween. Spacers (and) are respectively provided between the inner core and the flat springs, abutting portions are respectively configured by abutting facing surfaces of the spacers and the inner core and facing surfaces of the spacers and the flat springs adjacent to the spacers in the axial direction, and at least an engagement portion including a recess and a protrusion are arranged at the abutting portions.

Linear actuator

A linear actuator includes an inner core, and an outer core that is provided outside the inner core in a radial direction while being supported by a pair of flat springs. Permanent magnets are formed at one of the inner core and the outer core, and magnetic pole portions are formed at the other of the inner core and the outer core to face the permanent magnet with predetermined gaps formed therebetween. Spacers are respectively provided between the inner core and the flat springs, abutting portions are respectively configured by abutting facing surfaces of the spacers and the inner core and facing surfaces of the spacers and the flat springs adjacent to the spacers in the axial direction, and a plurality of engagement portions including recesses and protrusions are arranged at the abutting portions.

A damping apparatus for an automobile is provided, capable of ensuring a high level of reliability while obtaining excellent damping effect with simple configuration. The damping apparatus for an automobile that reduces vibrations of an automobile body may include an actuator that is attached to the automobile body and drives an auxiliary mass; a current detector that detects a current flowing through an armature of the actuator; a section that detects a terminal voltage applied to the actuator; a calculation circuit that calculates an induced voltage of the actuator, and further calculates at least one of the relative velocity, relative displacement, and relative acceleration of the actuator, based on a current detected by the current detector and the terminal voltage; and a control circuit that drive-controls the actuator based on at least one of the relative velocity, relative displacement, and relative acceleration of the actuator calculated by the calculation circuit.

Damping apparatus for reducing vibration of automobile body

Damping apparatus for reducing vibrations

A linear actuator includes a linear actuator body (), a casing () for housing the linear actuator body (), and insulating oil (L) that fills the casing () with a coil () of the linear actuator body () submerged therein. In such a configuration, heat generated by the coil () is quickly released to the oil (L) and is then conducted to the casing (). The oil (L) fully spreads into gaps in the coil (), of course. Therefore, heat is released very efficiently. Thus, by improving the heat-releasing characteristic, a linear actuator having a reduced size and a reduced weight is provided.

Linear actuator and method of manufacturing linear actuator including a deaerating step

The present invention provides a vibration damping device which can enhance a vibration damping effect even in a case where a vibration damping target position and a vibration damping force generation position are different from each other. The vibration damping device includes a vibration detecting unit for detecting a vibration which is caused by a vibration generating source and is transmitted to a position at which the vibration is to be damped; a vibration application unit which generates a vibration damping force to cancel the vibration, and is provided at a position different from the position at which the vibration is to be damped; a vibration application command generating unit for outputting a vibration application command to generate the vibration damping force in the vibration application unit, based on the vibration detected by the vibration detecting unit; and a vibration application command correcting unit which imparts to the vibration application command, a reverse property of a vibration damping force transmission path including a vibration transmission property from a position at which the vibration application unit is mounted to the position at which the vibration is to be damped, and then outputs the vibration application command to the vibration application unit.

Vibration damping device and vehicle

Growing community of inventors

Ise, Japan

Takashi Onoue