In-ear earphone with articulating nozzle and integrated boot
Intra-canal earphones and methods of manufacturing intra-canal earphones are disclosed. In an embodiment, an intra-canal earphone includes a rigid housing in which a driver is located, a rigid nozzle, and a resilient joint that physically couples the housing with the nozzle and acoustically couples the driver with the nozzle. Other embodiments are also described and claimed.
1. An intra-canal earphone, comprising:
a housing having a chamber, wherein the housing is rigid;
a nozzle having a nozzle lumen, wherein the nozzle is rigid;
a driver located in the chamber and having a driver port, the driver being configured to receive an electrical audio signal and to emit sound from the driver port; and
a resilient joint having an elastomeric body and a joint channel, wherein the nozzle is pivotally coupled with the housing through the elastomeric body, wherein the elastomeric body is elastomeric to allow the nozzle to pivot relative to the housing from an initial state when an external load is applied to the nozzle and to return to the initial state when the external load is removed, wherein the resilient joint is attached to a housing inner surface of the housing, wherein the resilient joint is attached to the nozzle, and wherein the nozzle lumen is acoustically coupled with the driver port through the joint channel.
2. The intra-canal earphone of claim 1 , wherein the resilient joint fills a space between the housing inner surface and the nozzle.
3. The intra-canal earphone of claim 2 , wherein the resilient joint is frictionally held by the housing inner surface, and wherein the nozzle is frictionally held by the resilient joint.
4. The intra-canal earphone of claim 3 , wherein the housing includes a protrusion extending radially inward from the housing inner surface, and wherein the resilient joint covers the protrusion.
5. The intra-canal earphone of claim 3 , wherein the nozzle includes one or more nozzle holes extending through a nozzle wall, and wherein the resilient joint fills the one or more nozzle holes.
6. The intra-canal earphone of claim 5 , wherein the nozzle wall spreads outward along a flared portion of the nozzle from the nozzle lumen toward the housing, and wherein the one or more nozzle holes are located in the flared portion.
7. The intra-canal earphone of claim 6 , wherein the one or more nozzle holes define a rib of the nozzle, and wherein the resilient joint surrounds at least a portion of the rib.
8. The intra-canal earphone of claim 1 , wherein the resilient joint includes a driver receptacle, and wherein a driver outer surface of the driver is located within the driver receptacle.
9. The intra-canal earphone of claim 8 , wherein the resilient joint seals against the driver outer surface at a proximal end of the joint channel and the resilient joint seals against the nozzle at a distal end of the joint channel such that the driver port is acoustically coupled with the nozzle lumen through the joint channel.
10. The intra-canal earphone of claim 9 , wherein the resilient joint fills a space between a housing inner surface and the driver outer surface between the driver port and the chamber such that the driver port is acoustically isolated from the chamber.
11. The intra-canal earphone of claim 1 , wherein the elastomeric body comprises a thermoplastic elastomer.
12. The intra-canal earphone of claim 11 , wherein the driver includes a balanced armature transducer.
13. The intra-canal earphone of claim 12 further comprising a compliant tip having a tip lumen acoustically coupled with the driver port through the nozzle lumen, wherein a tip outer surface is configured to seal against an ear canal.
14. The intra-canal earphone of claim 13 further comprising:
an audio jack; and
a cable electrically connected to the audio jack and to the driver, the cable being configured to transmit the electrical audio signal from the audio jack to the driver.
15. A method, comprising:
forming a housing having a chamber, wherein the housing is rigid;
forming a nozzle having a nozzle lumen, wherein the nozzle is rigid; and
molding a resilient joint having an elastomeric body and a joint channel over at least a portion of the housing and the nozzle, such that the nozzle is pivotally coupled with the housing through the elastomeric body and the nozzle lumen is acoustically coupled with the chamber through the joint channel, wherein the resilient joint includes a driver receptacle in fluid communication with the joint channel; and
installing a driver in the driver receptacle such that a driver port of the driver is acoustically coupled with the nozzle lumen through the joint channel.
16. The method of claim 15 , wherein the resilient joint fills a portion of the chamber between a housing inner surface and a driver outer surface axially between the driver port and the chamber such that the driver port is acoustically isolated from the chamber.
17. The method of claim 16 further comprising disposing a compliant tip over a nozzle outer surface such that a tip lumen is acoustically coupled with the driver port through the nozzle lumen, wherein a tip outer surface is configured to seal against an ear canal.
18. An intra-canal earphone, comprising:
a housing having a chamber and a housing inner surface, wherein the housing is rigid;
a nozzle having a nozzle lumen, wherein the nozzle is rigid;
a driver located in the chamber and having a driver port, the driver being configured to receive an electrical audio signal and to emit sound from the driver port; and
a resilient joint having an elastomeric body and a joint channel, wherein the nozzle is pivotally coupled with the housing through the elastomeric body, wherein the resilient joint fills a space between the housing inner surface and the nozzle, and wherein the nozzle lumen is acoustically coupled with the driver port through the joint channel.
19. The intra-canal earphone of claim 18 , wherein the resilient joint includes a driver receptacle, and wherein a driver outer surface of the driver is located within the driver receptacle.