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:
an outer wall configured to contact an ear canal of a user to form a seal therebetween; and
an inner wall connected to the outer wall and configured to be coupled to a nozzle of an earbud,
the inner wall comprising: (i) a ring comprising at least one C-shaped member that is formed of a rigid material and extends only partially around a perimeter of the inner wall so as to form at least one gap; and (ii) a compliant material that fills the gap;
wherein the ring and the compliant material together form the inner wall, and the compliant material defines a retention feature in the form of a protrusion that extends around an inner surface of the inner wall and is configured to engage a complimentary retention feature in the form of a recess that is defined by and extends around an outer surface of the nozzle, wherein the protrusion and the recess help to retain the ear tip on the nozzle and provide a good acoustic seal between the earbud and the ear tip.
2 . The ear tip of claim 1 , wherein the inner wall has an oblong cross-sectional shape that is configured to engage and conform to a corresponding oblong shape of the nozzle.
3 . The eartip of claim 1 , wherein the outer wall is in the shape of a dome that has an oblong cross-sectional shape.
4 . The ear tip of claim 1 , wherein the compliant material is a high durometer compliant material.
5 . The ear tip of claim 4 , wherein the high durometer compliant material has a durometer of 60 Shore A to 80 Shore A.
6 . The ear tip of claim 4 , wherein the high durometer compliant material defines at least part of an extension that extends between the nozzle and the outer wall.
7 . The ear tip of claim 6 , wherein the outer wall is formed of a low durometer compliant material.
8 . The ear tip of claim 7 , wherein the low durometer compliant material is molded around the high durometer compliant material.
9 . The ear tip of claim 8 , wherein the low durometer compliant material has a durometer of 10 Shore A to 30 Shore A.
10 . The ear tip of claim 9 , wherein the at least one C-shaped member is formed of a rigid plastic.
11 . The ear tip of claim 4 , wherein the at least C-shaped member 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.
12 . The ear tip of claim 1 , wherein the inner wall has a first end connected to the outer wall and a second end opposite the first end, and
wherein the at least one C-shaped member is arranged at the second end of the inner wall.
13 . The ear tip of claim 1 , wherein the perimeter of the inner wall is oblong in shape.