Hearing aid with speaker unit assembly

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,

a detachable speaker unit having a speaker unit connector configured to mate with the housing connector, the detachable speaker unit comprising an output transducer arranged in an in-the-ear (ITE) housing,

wherein the speaker unit connector comprises a first plurality of electrical contacts distributed at two inner surfaces of a speaker unit connector cavity,

wherein the housing connector comprises a second plurality of housing connector contacts arranged in a housing connector cavity, the housing connector contacts extending into the housing connector cavity, the housing connector cavity and speaker unit connector electrical contacts configured to establish electrical contact when the speaker unit connector and the housing connector are in mechanical connection, and

a hole 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 hole,

wherein one or more of the first plurality of electrical contacts in the speaker unit connector is electrically connected to a corresponding sensor arranged in the ITE housing, said sensor being configured as an acceleration sensor, a temperature sensor, a PPG sensor, or a combination thereof.

2. The hearing aid according to claim 1 , wherein housing connector comprises a centrally positioned part extending into the housing connector cavity and wherein the second plurality of housing connector contacts are arranged at the centrally positioned part, the centrally positioned part configured to be received in the speaker unit connector cavity.

3. The hearing aid according to claim 1 , wherein the housing connector cavity comprises a first protrusion extending into the housing connector cavity, and the speaker unit connector comprises a track mating the first protrusion.

4. The hearing aid according to claim 3 , wherein the housing connector cavity comprises a second protrusion extending into the housing connector cavity and the speaker unit connector comprises a second track mating the second protrusion, the first protrusion and the second protrusion arranged at a first side of the housing connector cavity.

5. The hearing aid according to claim 4 , wherein the housing connector cavity 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.

6. 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.

7. The hearing aid according to claim 1 , wherein the first plurality and the second plurality are equal or, alternatively, wherein the first plurality and the second plurality are not equal.

8. The hearing aid according to claim 1 , wherein the first plurality and the second plurality is an even number or, alternatively, wherein the first plurality and the second plurality is an uneven number.

9. The hearing aid according to claim 1 , wherein the speaker unit connector comprises an electrical component.

10. The hearing aid according to claim 1 , wherein the in-the-ear housing comprises a second input transducer.

11. The hearing aid according to claim 1 , wherein

the hole is a first hole 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 hole arranged at an opposite side of the first loop structure and the speaker unit connector comprises a second protruding structure arranged opposite the first protruding structure and shaped to contact the second hole.

12. 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 comprising:

an output transducer arranged in an in-the-ear (ITE) housing;

a first plurality of electrical contacts arranged within the speaker unit connector, the first plurality of electrical contacts being distributed at two inner surfaces of a speaker unit connector cavity; 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 a hole cut out from a surface of the housing connector of the BTE housing, and

a hole cut out from a surface of the plug housing shaped to be snapped into by a protruding structure formed on an outer surface of the housing connector,

wherein one or more of the first plurality of electrical contacts in the speaker unit connector is electrically connected to a corresponding sensor arranged in the ITE housing, the sensor being configured as an acceleration sensor, a temperature sensor, a PPG sensor, or a combination thereof.

13. The detachable speaker unit assembly according to claim 12 , 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.

14. The hearing aid according to claim 2 , 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.

15. The hearing aid according to claim 3 , 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.

16. The hearing aid according to claim 4 , 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.

17. The hearing aid according to claim 5 , 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.

18. The detachable speaker unit assembly according to claim 12 , wherein the housing connector cavity comprises a first protrusion extending into the speaker unit connector cavity, and the speaker unit connector comprises a track mating the first protrusion.

19. The detachable speaker unit assembly according to claim 12 , 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.