Active noise vibration control apparatus and method for manufacturing same
AssigneesHonda Motor Co., Ltd., National University Corporation Kanazawa University
InventorsToshio Inoue, Osamu Terashima, Toshihiko Komatsuzaki
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Abstract
An engine mount control apparatus that is an active noise vibration control apparatus according to the present disclosure is characterized by being provided with a housing that has an outer core, an inner core that is disposed inside the outer core, and an electromagnetic coil that is positioned between the outer core and the inner core and by a portion between the outer core and the inner core being filled with a magneto-rheological elastomer containing magnetic particles. The present disclosure enables the maintenance of good static load support performance.
Claims9
An active noise vibration control apparatus comprising:
- a housing that has an outer core;
- an inner core that is disposed inside the outer core;
- and
- an electromagnetic coil that is positioned between the outer core and the inner core,
- wherein a space between the outer core and the inner core is filled with a magneto-rheological elastomer containing magnetic particles;
- and
- a content rate of the magnetic particles in a magnetic path-forming portion of the magneto-rheological elastomer between the outer core and the inner core is higher than a content rate of the magnetic particles in a portion other than the magnetic path-forming portion of the magneto-rheological elastomer.
A method for manufacturing an active noise vibration control apparatus, comprising:
- an arrangement step of arranging an inner core inside an outer core of a housing having the outer core and arranging an electromagnetic coil between the outer core and the inner core;
- an injection step of injecting a magnetic particle-containing uncured elastomer raw material containing magnetic particles into a separation space formed, inside the housing, between the outer core and the inner core;
- and
- a magneto-rheological-elastomer formation step of curing the elastomer raw material while forming a given magnetic path in the outer core, the inner core, and the injected elastomer raw material by applying a current to the electromagnetic coil such that a content rate of the magnetic particles in a magnetic path-forming portion of the magneto-rheological elastomer between the outer core and the inner core is higher than a content rate of the magnetic particles in a portion other than the magnetic path-forming portion of the magneto-rheological elastomer.
Dependencies are inferred from the claim text.