Electrical connector with multiple seals inhibiting liquid ingress
An apparatus includes a first element and a second element configured to be repeatedly mechanically coupled to and decoupled from one another, a first seal between the first element and the second element, and a second seal between the first element and the second element. The first seal is configured to inhibit moisture ingress from an environment surrounding the first and second elements to a first region enclosed at least partially by the first seal and the second seal is configured to inhibit moisture ingress from the first region to a second region enclosed at least partially by the second seal. One of the first and second seals includes two first surfaces of the first and second elements in contact with one another, and another one of the first and second seals includes a second surface and a resiliently bendable protrusion of the first and second elements in contact with one another.
1 . An apparatus comprising:
a first element and a second element configured to be repeatedly mechanically coupled to and decoupled from one another;
a first seal between the first element and the second element, the first seal configured to inhibit moisture ingress from an environment surrounding the first and second elements to a first region enclosed at least partially by the first seal; and
a second seal between the first element and the second element, the second seal configured to inhibit moisture ingress from the first region to a second region enclosed at least partially by the second seal, one of the first and second seals comprising two first surfaces of the first and second elements in contact with one another, another one of the first and second seals comprising a second surface and a resiliently bendable protrusion of the first and second elements in contact with one another.
2 . The apparatus of claim 1 , wherein the first element comprises a socket comprising a first set of electrical connectors and the second element comprises a plug comprising a second set of electrical connectors, the first and second sets of electrical connectors at least partially within the second region and configured to be in electrical communication with one another.
3 . The apparatus of claim 1 , wherein the first seal comprises a snap seal comprising the two first surfaces of the first and second elements in contact with one another and the second seal comprises a lip seal comprising the second surface and the resiliently bendable protrusion of the first and second elements in contact with one another.
4 . The apparatus of claim 3 , wherein one of the two first surfaces comprises a thermoplastic elastomer or silicone material configured to be sufficiently soft such that the other one of the two first surfaces indents the thermoplastic elastomer or silicone material.
5 . The apparatus of claim 1 , wherein the resiliently bendable protrusion is configured to be bent by the second surface upon the second element being mechanically coupled to the first element.
6 . The apparatus of claim 1 , wherein the first element and the second element are configured to snap together and the two first surfaces are configured to contact and press against one another upon the first and second elements being snapped together.
7 . The apparatus of claim 1 , wherein the second element comprises an outer molding and the first element comprises an elongate portion configured to snap into the outer molding, the two first surfaces comprising an inner surface of the outer molding and an outer surface of the elongate portion.
8 . The apparatus of claim 7 , wherein the second element comprises the resiliently bendable protrusion and the second surface comprises an inner surface of the elongate portion.
9 . The apparatus of claim 8 , wherein the inner surface of the outer molding presses the elongate portion against the resiliently bendable protrusion such that forces applied to the elongate portion by the inner surface of the outer molding and by the protrusion are in substantially opposite and substantially colinear directions.
10 . The apparatus of claim 1 , wherein one of the two first surfaces has a first hardness and the other of the two first surfaces has a second hardness greater than the first hardness.
11 . The apparatus of claim 1 , wherein the first element comprises at least one first interlock portion and the second element comprises at least one second interlock portion configured to engage with and disengage from the at least one first interlock portion, the at least one first interlock portion and the at least one second interlock portion configured to inhibit relative rotation between the first element and the second element about a center axis extending through the first and second elements.
12 . The apparatus of claim 1 , wherein the apparatus is an external portion of an acoustic prosthesis system.
13 . An apparatus comprising:
an elastic protrusion;
a first surface facing the elastic protrusion; and
a first region between the elastic protrusion and the first surface, the first region configured to receive two oppositely facing second surfaces such that the first surface engages one of the two second surfaces to form a first moisture seal and the elastic protrusion engages and is bent by another of the two second surfaces to form a second moisture seal.
14 . The apparatus of claim 13 , wherein the apparatus is configured to be repeatedly mechanically coupled to and decoupled from the two second surfaces.
15 . The apparatus of claim 13 , wherein the elastic protrusion and the first surface are substantially circular and concentric with one another with the first region therebetween, and the two second surfaces are substantially circular and concentric with one another.
16 . The apparatus of claim 13 , wherein, upon the first region receiving the two second surfaces, the first moisture seal is configured to inhibit moisture ingress into the first region from an environment surrounding the apparatus and the second moisture seal is configured to inhibit moisture ingress into a second region from the first region.
17 . The apparatus of claim 13 , further comprising a first set of electrically conductive conduits configured to, upon the first region receiving the two second surfaces, mate with a second set of electrically conductive conduits, the mated first and second sets of electrically conductive conduits within the second region.
18 . The apparatus of claim 13 , wherein the first moisture seal and the second moisture seal are each substantially circular.
19 . The apparatus of claim 18 , further comprising a beveled surface and a recess configured to form a snap fit with a protrusion comprising the two second surfaces, the protrusion having a substantially D-shaped cross-section in a plane substantially perpendicular to the first and second moisture seals.
20 . A method comprising:
providing a first mating portion comprising a first plurality of electrical conduits and a second mating portion comprising a second plurality of electrical conduits configured to engage and be in electrical communication with the first plurality of electrical conduits;
pressing a first surface of the first mating portion against a second surface of the second mating portion, the first and second surfaces forming a first moisture barrier between the first and second mating portions; and
pressing and bending an elastic protrusion of the second mating portion using a third surface of the first mating portion, the elastic protrusion and the third surface forming a second moisture barrier between the first and second mating portions.
21 . The method of claim 20 , wherein the first mating portion comprises a socket of an electrical connector and the second mating portion comprises a plug of the electrical connector.
22 . The method of claim 20 , wherein the first moisture barrier and the second moisture barrier inhibit moisture ingress from an environment outside the first and second mating portions into an inner region bounded by the first and second mating portions.