Ear tips and related devices and methods
An ear tip includes a body configured to be mounted onto an earbud. The body includes a first end, a second end opposite the first end, and a first wall extending between the first and second ends. The first wall defines and surrounds a hollow passage that is configured to conduct sound waves. The first wall is configured to engage a nozzle on the earbud. The first wall includes a ring that is formed of a rigid material and engages the nozzle. The ring includes at least one C-shaped member with at least one gap and a compliant material is molded around the ring and fills the gap.
1. An ear tip comprising:
a body that is configured to be mounted onto an earbud, the body comprising:
a first end,
a second end opposite the first end, and
a first wall extending between the first end and the second end, the first wall defining and surrounding a hollow passage configured to conduct sound waves,
wherein the first wall is configured to engage a nozzle on the earbud,
wherein the first wall comprises a ring, formed of a rigid material, that engages the nozzle, and
wherein the ring comprises at least one C-shaped member with at least one gap,
wherein the C-shaped member conforms to an oblong shape of the nozzle, which inhibits improper mounting of the ear tip on the nozzle and inhibits rotation of the ear tip relative to the nozzle once it is mounted on the nozzle, and
wherein a compliant material is molded around the ring and fills the gap.
2. The eartip of claim 1 , further comprising a second wall connected to the first wall at the first end and extending away from the first wall toward the second end.
3. The eartip of claim 2 , wherein the second wall is in the shape of a dome that has an oblong cross-sectional shape.
4. The eartip of claim 2 , wherein the first wall further comprises an extension that extends between the nozzle and the first end of the ear tip, and wherein the second wall and the extension are formed at least partially of a viscoelastic material with frequency stiffening behavior.
5. The eartip of claim 4 , wherein the extension and the second wall are formed of a styrenic TPE with viscoelastic attributes.
6. The ear tip of claim 4 , wherein an outer surface of the second wall is treated with a surface treatment selected from an E-beam processing and photoionization for improved sebum resistance.
7. The ear tip of claim 4 , wherein an outer surface of the second wall has a soft touch coating.
8. The ear tip of claim 7 , wherein the soft touch coating comprises a 50% poly(styrene-isobutylene-styrene) (SIBS) block copolymer/50% silicone (wt/wt) soft touch coating.
9. The ear tip of claim 4 , wherein the viscoelastic material comprises a composition including an elastomer and one or more phase change materials having a phase change ability from solid to liquid state at a predetermined phase-change temperature.
10. The ear tip of claim 9 , wherein the predetermined phase-change temperature is about 25° C. to about 35° C.
11. The ear tip of claim 9 , wherein the composition has a hardness of about 5 Shore A to about 50 Shore A, and the amount of the phase change material in the composition is about 10% to about 40% by weight.
12. The ear tip of claim 1 , wherein the compliant material is a high durometer compliant material.
13. The ear tip of claim 12 , wherein the high durometer compliant material has a durometer of 60 Shore A to 80 Shore A.
14. The ear tip of claim 12 , wherein the high durometer compliant material defines at least part of an extension that extends between the nozzle and the first end of the ear tip.
15. The ear tip of claim 14 , further comprising a second wall connected to the first wall at the first end and extending away from the first wall toward the second end, wherein the second wall is formed of a low durometer compliant material.
16. The ear tip of claim 15 , wherein the low durometer compliant material is molded around the high durometer compliant material.
17. The ear tip of claim 16 , wherein the low durometer compliant material has a durometer of 10 Shore A to 30 Shore A.
18. The ear tip of claim 15 , wherein the ring is formed of a rigid plastic.
19. The ear tip of claim 12 , wherein the ring comprises a pair of C-shaped members arranged with a pair of gaps between the members, and wherein the high durometer compliant material fills both gaps.
20. The ear tip of claim 12 , wherein the high durometer compliant material defines a retention member that is configured to engage a mating retention member on the nozzle.
21. The ear tip of claim 1 , wherein the first wall has an oblong cross-sectional shape.
22. The ear tip of claim 1 , wherein the C-shaped member extends only partially around a perimeter of the first wall.