Multifunctional actuator and mobile terminal
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.
1. 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.
2. The multifunctional actuator as described in claim 1 , wherein said sound release gap is formed by a thin part provided at the outer periphery of said housing,
a cut-out provided on an open end of said thin part, and
the side wall of said cover.
3. The multifunctional actuator as described in claim 1 , wherein there are provided a hole in the side wall of said cover and a projection on the outer periphery of said housing that fits into said hole.
4. The multifunctional actuator as described in claim 2 , wherein there are provided a hole in the side wall of said cover and a projection on the outer periphery of said housing that fits into said hole.
5. A mobile terminal equipped with the multifunctional actuator as described in claim 1 .
6. A mobile terminal equipped with the multifunctional actuator as described in claim 2 .
7. A mobile terminal equipped with the multifunctional actuator as described in claim 3 .
8. A mobile terminal equipped with the multifunctional actuator as described in claim 4 .