Multifunctional actuator and mobile terminal
AssigneeNamiki Seimitsu Houseki Kabushiki Kaisha
InventorsMinoru Ueda, Shoichi Kaneda, Etsuo Ohno
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Abstract
The present invention is a multifunctional actuator including a magnetic circuit, a suspension that supports the magnetic circuit, a diaphragm positioned facing the magnetic circuit, and a voice coil that is mounted on the diaphragm and inserted in a circular air gap of the magnetic circuit, comprising a housing to accommodate the magnetic circuit, and a cover to cover an open end of the housing, wherein a sound release gap is formed between an outer periphery of the housing and a side wall of the cover for communication between the inside and outside of said housing. Thereby, it can prevent the infiltration of foreign matter into the housing without attaching a dust mesh or non-woven fabric over the sound release hole.
Claims8
A multifunctional actuator including a magnetic circuit, a suspension that supports the magnetic circuit, a diaphragm positioned facing the magnetic circuit, and a voice coil that is mounted on the diaphragm and inserted in a circular air gap of the magnetic circuit, comprising:
- a housing to accommodate said magnetic circuit;
- a cover to cover an open end of said housing;
- and
- a sound release gap formed between an outer periphery of said housing and a side wall of said cover for communication between the inside and outside of said housing,
- wherein the sound release gap formed is a communication path having a bend portion so as to prevent infiltration of foreign matter.
Dependencies are inferred from the claim text.