Hearing aid with speaker unit assembly
The present disclosure relates to a hearing aid and detachable speaker unit assembly. The detachable speaker unit assembly comprises a fastening structure to provide an enhanced removal force and stable insertion into the ear canal of the user.
1 . A hearing aid comprising:
a behind-the-ear (BTE) housing comprising a housing connector, the BTE housing including an input transducer configured to convert acoustic sound into an electrical signal, the BTE housing comprising a processor configured to process the electrical signal in accordance with a hearing loss of a user, and
a detachable speaker unit having a speaker unit connector which includes a cable assembly and which is configured to snapably mate with the housing connector by interlocking of a snap arm with a snap ridge, the detachable speaker unit comprising an output transducer, wherein the detachable speaker unit connector is configured, with contact pins arranged therein, to establish electrical contact between the processor and the output transducer, when the speaker unit connector and the housing connector are in mechanical connection, the speaker unit connector including a speaker unit connector housing in which said contact pins are arranged, which contact pins are connected to said cable assembly by a printed circuit board (PCB); wherein the speaker unit connector housing, the PCB, and said cable assembly are mechanically overmolded together.
2 . The hearing aid according to claim 1 , further comprising an aperture cut out from a surface of one of the BTE housing and the speaker unit connector, and a protruding structure on an outer surface of the other of the BTE housing and the speaker unit connector, the protruding structure being configured to snap into the aperture.
3 . The hearing aid according to claim 2 , wherein
the aperture is a first aperture formed on the surface of the housing connector, and the protruding structure is a first protruding structure formed on the outer surface of the speaker unit connector,
the housing connector comprises a second aperture arranged opposite the first aperture and the speaker unit connector comprises a second protruding structure arranged opposite the first protruding structure and shaped to contact the second aperture.
4 . The hearing aid according to claim 1 ,
wherein the speaker unit connector comprises a first plurality of electrical contacts distributed at two inner surfaces of a speaker unit connector cavity, and
wherein the housing connector comprises a second plurality of electrical contacts arranged in a housing connector cavity, the second plurality of electrical contacts extending into the housing connector cavity, the first plurality of electrical contacts and the second plurality of electrical contacts configured to establish electrical contact when the speaker unit connector and the housing connector are in the mechanical connection.
5 . The hearing aid according to claim 4 , wherein the number of said first plurality of electrical contacts and the number of said second plurality of electrical contacts are not equal.
6 . The hearing aid according to claim 1 , wherein the housing connector comprises a centrally positioned part and wherein a second plurality of electrical contacts are arranged at the centrally positioned part, the centrally positioned part configured to be received in a speaker unit connector cavity.
7 . The hearing aid according to claim 1 , wherein the housing connector includes a cavity which comprises a first protrusion, and the speaker unit connector comprises a track configured to mate with the first protrusion.
8 . The hearing aid according to claim 7 , wherein the housing connector cavity comprises a second protrusion and wherein the speaker unit connector comprises a second track configured to mate with the second protrusion, the first protrusion and the second protrusion arranged at a first side of the housing connector.
9 . The hearing aid according to claim 8 , wherein the housing connector has a rectangular cross-section geometry and the first protrusion and the second protrusion are arranged at respective corners of a long side of the rectangular cross-section geometry.
10 . The hearing aid according to claim 1 , wherein the speaker unit connector is provided with a gasket or sealing arranged to contact a surface of the housing connector in a mounted state.
11 . A detachable speaker unit assembly having a speaker unit connector configured to mate with a housing connector of a behind-the-ear (BTE) hearing aid housing, the detachable speaker unit including a cable assembly and comprising:
an output transducer arranged in an in-the-ear (ITE) housing;
a first plurality of electrical contacts, in the form of contact pins, arranged within the speaker unit connector; and
one of:
a protruding structure formed on an outer surface of the plug housing of the speaker unit connector and shaped to snap into an aperture cut out from a surface of the housing connector of the BTE housing, and
an aperture cut out from a surface of a plug housing shaped to be snapped into by a protruding structure formed on an outer surface of the housing connector,
wherein the speaker unit connector includes a speaker unit connector housing in which said contact pins are arranged, which contact pins are connected to said cable assembly by a printed circuit board (PCB); wherein the speaker unit connector housing, the PCB, and said cable assembly are mechanically overmolded together.
12 . The detachable speaker unit assembly according to claim 11 , wherein the speaker unit connector is electrically connected to at least one of an acceleration sensor, a temperature sensor, a PPG sensor, or a combination thereof.
13 . The detachable speaker unit assembly according to claim 11 , wherein the first plurality of electrical contacts are distributed at two inner surfaces of a speaker unit connector cavity.
14 . The detachable speaker unit assembly according to claim 11 , wherein a multitude of electrical conductors are connected to a substrate in the speaker unit connector, and wherein the multitude of electrical conductors are assembled in a cable structure electrically and mechanically connecting the speaker unit connector with the ITE housing.
15 . The detachable speaker unit assembly according to claim 11 , wherein housing connector comprises a housing connector cavity comprising a first protrusion extending into a speaker unit connector cavity, and the speaker unit connector comprises a track configured to mate with the first protrusion.
16 . The detachable speaker unit assembly according to claim 11 , wherein the speaker unit connector is provided with a gasket or sealing arranged to contact a surface of the housing connector in a mounted state.