Vibration transducer
First Claim
1. A vibration transducer comprising:
- a housing composed of an airtight material and having a through-hole;
a vibration conversion die which is attached to an interior surface of the housing in an airtight manner at a first position embracing the through-hole in plan view; and
a barrier diaphragm whose external periphery is attached to an exterior surface of the housing at a second position vertically matching the first position for embracing the through-hole in plan view, wherein the barrier diaphragm composed of an airtight material has a vibration area which is larger than a sectional area of the through-hole,wherein a space allowing the barrier diaphragm to vibrate is formed between the barrier diaphragm and the exterior surface of the housing.
1 Assignment
0 Petitions
Accused Products
Abstract
A vibration transducer (e.g. a condenser microphone) having a high sensitivity is constituted of a housing composed of an airtight material having a through-hole, a vibration conversion die (e.g. a microphone die) which is attached to the interior surface of the housing at the prescribed position embracing the through-hole in plan view, and a barrier diaphragm composed of an airtight material whose external periphery is attached to the exterior surface of the housing in an airtight manner oppositely to the prescribed position. The barrier diaphragm has a vibration area which is larger than the sectional area of the through-hole. A space allowing the barrier diaphragm to vibrate is formed between the barrier diaphragm and the exterior surface of the housing, wherein the distance between the barrier diaphragm and the exterior surface of the housing can be gradually reduced from the vibration axis to the external periphery.
66 Citations
10 Claims
-
1. A vibration transducer comprising:
-
a housing composed of an airtight material and having a through-hole; a vibration conversion die which is attached to an interior surface of the housing in an airtight manner at a first position embracing the through-hole in plan view; and a barrier diaphragm whose external periphery is attached to an exterior surface of the housing at a second position vertically matching the first position for embracing the through-hole in plan view, wherein the barrier diaphragm composed of an airtight material has a vibration area which is larger than a sectional area of the through-hole, wherein a space allowing the barrier diaphragm to vibrate is formed between the barrier diaphragm and the exterior surface of the housing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
Specification