Oscillation device and electronic apparatus
View Patent ↗An oscillation device (electro-acoustic transducer ( 100 )) includes an oscillation element ( 110 ) that has a vibrating member ( 120 ) and a piezoelectric element ( 111 ) that is attached to one surface of the vibrating member ( 120 ). The oscillation device includes a sheet-shaped waterproof member ( 140 ) that is constituted by a waterproof material. The oscillation device includes a frame-shaped supporting member ( 130 ) that holds an outer peripheral portion of the vibrating member ( 120 ) and an outer peripheral portion of the waterproof member ( 140 ) so that the waterproof member ( 140 ) and the oscillation element ( 110 ) face each other. The oscillation device includes a connection member ( 150 ) that partially connects mutual opposed surfaces of the oscillation element ( 110 ) and the waterproof member ( 140 ).
1. An oscillation device comprising:
an oscillation element that has a vibrating member and a piezoelectric element that is attached to one surface of the vibrating member;
a sheet-shaped waterproof member that is constituted by a waterproof material;
a frame-shaped supporting member that holds an outer peripheral portion of the vibrating member and an outer peripheral portion of the sheet-shaped waterproof member so that the sheet-shaped waterproof member and the oscillation element face each other; and
a connection member that partially connects mutually opposed surfaces of the oscillation element and the sheet-shaped waterproof member,
wherein the entirety of the outer peripheral portion of the sheet-shaped waterproof member is bonded to an inner peripheral surface of the frame-shaped supporting member.
2. The oscillation device according to claim 1 , wherein the vibrating member and the sheet-shaped waterproof member face each other, and the connection member connects the vibrating member and the sheet-shaped waterproof member to each other.
3. The oscillation device according to claim 2 , further comprising a second vibrating member that is positioned on the opposite side of the vibrating member with the piezoelectric element interposed therebetween and that is attached to the piezoelectric element.
4. The oscillation device according to claim 1 , wherein the piezoelectric element and the sheet-shaped waterproof member face each other, and the connection member connects the piezoelectric element and the sheet-shaped waterproof member to each other.
5. An oscillation device comprising:
an oscillation element that has a vibrating member and a piezoelectric element that is attached to one surface of the vibrating member;
a sheet-shaped waterproof member that is constituted by a waterproof material;
a frame-shaped supporting member that holds an outer peripheral portion of the vibrating member and an outer peripheral portion of the sheet-shaped waterproof member so that the sheet-shaped waterproof member and the oscillation element face each other;
a connection member that partially connects mutual opposed surfaces of the oscillation element and the sheet-shaped waterproof member; and
a second piezoelectric element that is attached to the other surface of the vibrating member,
wherein the piezoelectric element and the sheet-shaped waterproof member face each other, and the connection member connects the piezoelectric element and the sheet-shaped waterproof member to each other.
6. The oscillation device according to claim 1 , wherein the frame-shaped supporting member protrudes in a direction opposite to the vibrating member based on the sheet-shaped waterproof member.
7. The oscillation device according to claim 1 , wherein a plurality of the connection members are provided so as to be spaced apart from each other.
8. An electronic apparatus comprising:
a housing;
a sound hole that is provided in the housing; and
an oscillation device that is provided inside the housing,
wherein the oscillation device includes:
an oscillation element that includes a vibrating member, and a piezoelectric element that is attached to one surface of the vibrating member;
a sheet-shaped waterproof member that is constituted by a waterproof material;
a frame-shaped supporting member that holds an outer peripheral portion of the vibrating member and an outer peripheral portion of the sheet-shaped waterproof member so that the sheet-shaped waterproof member and the oscillation element face each other; and
a connection member that partially connects mutual opposed surfaces of the oscillation element and the sheet-shaped waterproof member, and
wherein the frame-shaped supporting member is bonded to an inner surface of the housing so as to surround the sound hole in a direction in which the sheet-shaped waterproof member faces the sound hole.
9. The electronic apparatus according to claim 8 , further comprising an oscillation driving unit that inputs a modulation signal for driving the oscillation device as a parametric speaker to the piezoelectric element.