Acoustic transducer having reduced thickness
First Claim
Patent Images
1. A transducer for a hearing aid, said transducer comprising:
- a housing, a membrane suspended in said housing for vibration in response to a motor having a free end, said motor comprising a coil and a magnet assembly, said coil being mounted in said housing beneath said membrane;
said magnet assembly being mounted in said housing coaxially with said coil and to one edge of said membrane,wherein said magnet assembly is laterally spaced from an end of said coil, and further including an armature extending through said coil and said magnet and a drive pin having one end coupled to said armature and extending through a space defined between said coil and said magnet assembly and having a second end coupled with said membrane, wherein said drive pin extends through said membrane and is bent at an acute angle relative to a surface of said membrane, and wherein a quantity of adhesive is introduced between said membrane surface and said drive pin.
5 Assignments
0 Petitions
Accused Products
Abstract
A transducer for a hearing aid includes a housing, a relatively thin membrane having a free end suspended in the housing for vibration in response to a motor. The motor has a coil and a magnet assembly, the coil being mounted in the housing beneath the membrane; the magnet assembly being mounted in the housing coaxially with the coil and to one edge of the membrane.
116 Citations
25 Claims
-
1. A transducer for a hearing aid, said transducer comprising:
-
a housing, a membrane suspended in said housing for vibration in response to a motor having a free end, said motor comprising a coil and a magnet assembly, said coil being mounted in said housing beneath said membrane; said magnet assembly being mounted in said housing coaxially with said coil and to one edge of said membrane, wherein said magnet assembly is laterally spaced from an end of said coil, and further including an armature extending through said coil and said magnet and a drive pin having one end coupled to said armature and extending through a space defined between said coil and said magnet assembly and having a second end coupled with said membrane, wherein said drive pin extends through said membrane and is bent at an acute angle relative to a surface of said membrane, and wherein a quantity of adhesive is introduced between said membrane surface and said drive pin. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. A transducer for a hearing aid, said transducer comprising a housing, a membrane having a free end suspended in said housing for vibration in response to a motor, said motor comprising a coil and a magnet assembly, said coil being mounted in said housing beneath said membrane;
- said magnet assembly being mounted in said housing coaxially with said coil and to one edge of said membrane, such that said membrane extends over said coil, but not over said magnet assembly.
- View Dependent Claims (19)
-
20. A dual transducer for a hearing aid, said dual transducer comprising a pair of transducers mounted in side-by-side abutting relation, each of said transducers comprising:
-
a housing, a membrane having a free end suspended in said housing for vibration in response to a motor, said motor comprising a coil and a magnet assembly, said coil being mounted in said housing beneath said membrane;
said magnet assembly being mounted in said housing coaxially with said coil and to one edge of said membrane, such that said membrane extends over said coil, but not over said magnet assembly;wherein each said housing comprises a case and a cover with said membrane being spaced beneath and parallel with said cover and wherein said transducers are mounted with said cases in congruently aligned and abutting condition. - View Dependent Claims (21)
-
-
22. A transducer for a hearing aid, said transducer comprising:
-
a housing, a membrane suspended in said housing for vibration in response to a motor having a free end, said motor comprising a coil and a magnet assembly, said coil being mounted in said housing beneath said membrane; said magnet assembly being mounted in said housing coaxially with said coil and to one edge of said membrane, wherein said housing comprises a case and a cover, and further including flanges formed at lateral edges of said membrane and a quantity of damping paste applied between said flanges and each of a pair of respective opposed inwardly facing surfaces of said case. - View Dependent Claims (23)
-
-
24. A transducer for a hearing aid, said transducer comprising:
-
a motor comprising a coil and a magnet assembly; a housing comprising a case and a cover; and a membrane having a free end, said membrane being suspended in said housing for vibration in response to said motor, said membrane further including flanges formed at lateral edges of said membrane and a quantity of damping paste applied between said flanges and each of a pair of respective opposed inwardly facing surfaces of said case, said membrane flange on one lateral edge is spaced from the facing wall of said case by a distance greater than the flange on the other edge, said flanges extend into said case and further including a cap applied over said damping paste and along both of the lateral edges of said membrane, wherein said coil of said motor is mounted in said housing beneath said membrane and said magnet assembly is mounted in said housing coaxially with said coil and to one edge of said membrane.
-
-
25. A transducer for a hearing aid, said transducer comprising:
-
a housing, a membrane suspended in said housing for vibration in response to a motor having a free end, said motor comprising a coil and a magnet assembly, said coil being mounted in said housing beneath said membrane; said magnet assembly being mounted in said housing coaxially with said coil and to one edge of said membrane, wherein said housing has a case and a cover and said membrane is suspended beneath said cover, wherein said membrane is carried on a suspension foil and said suspension foil is clamped between said cover and said case, and wherein outer edges of said suspension foil are folded back to provide a double layer of foil along said edges prior to clamping said edges between said cover and said case.
-
Specification