Spring assemblies with spring energized seal members and related methods
View Patent ↗Seal assemblies in which a seal member having an energizer located in a seal body groove is positioned inside a housing cavity of a housing are disclosed. The sealing member and the energizer, which can be an O-ring or a spring energizer, can be retained inside the housing cavity by positioning a portion of the energizer in a groove in the housing cavity in a locking or latching engagement. Methods of making and using seal assemblies are also disclosed.
1. A seal assembly having a bore comprising:
a sealing member, an energizer, and a housing having sidewalls defining, at least in part, a housing cavity;
the sealing member is retained in the housing cavity and the sealing member comprises a seal cavity in which the energizer is located;
a groove formed in the housing cavity having a portion of the energizer located in the groove to retain the sealing member in the housing cavity; and
wherein the sealing member has a seal body comprising a bore, and the sealing member is a face seal comprising an inside flange and an outside flange pointing in a direction of the bore of the seal body or in a direction away from the bore of the seal body.
2. The seal assembly according to claim 1 , wherein the groove is formed on one of the sidewalls and is a V-bottom groove.
3. The seal assembly according to claim 1 , wherein the energizer is an annular helical spring, a garter spring, a ribbon spring, a canted coil spring or an O-ring.
4. The seal assembly according to claim 1 , wherein the sealing member provides EMI shielding.
5. The seal assembly according to claim 1 , wherein the groove is located on an inside sidewall defining at least part of the bore of the seal assembly.
6. The seal assembly according to claim 1 , wherein the groove forms a latch or a lock with the energizer.
7. The seal assembly according to claim 1 , wherein at least a portion of the sealing member is loaded by the energizer against a surface of the housing cavity.
8. The seal assembly according to claim 1 , wherein the sealing member comprises a seal lip that is energized by the energizer.
9. The seal assembly according to claim 1 , wherein the sidewall with the groove comprises an entry chamfer for the energizer to rotate.
10. The seal assembly according to claim 9 , whereby rotation of the energizer moves the energizer deeper into the spring cavity of the sealing member to allow for full insertion of the sealing member into the housing cavity.
11. The seal assembly according to claim 1 , further comprising a second sealing member having a second energizer located in a seal body cavity and wherein the energizer engages a second groove in the housing cavity.
12. A method of assembling a face seal assembly having a bore comprising:
providing a sealing member having a seal body cavity cooperatively defined by an inside flange, an outside flange, and a center channel section extending therebetween, an energizer, and a housing having sidewalls defining, at least in part, a housing cavity;
retaining the energizer against the inside flange and the outside flange;
inserting the sealing member with the energizer into the housing cavity; and
retaining the sealing member in the housing cavity by positioning a portion of the energizer within a groove formed in the housing cavity.
13. The method according to claim 12 , wherein the sealing member is a face seal, and the inside flange points in a direction of a bore or in a direction away from the bore.
14. The method according to claim 12 , wherein the groove is a V-bottom groove.
15. The method according to claim 12 , wherein the energizer is an annular helical spring, a garter spring, a ribbon spring, an O-ring, or a canted coil spring.
16. The method according to claim 12 , wherein the energizer is an axially or a radially oriented canted coil spring.
17. The method according to claim 12 , wherein the groove is on a sidewall of the housing cavity closer to a bore than a sidewall further away from the bore.
18. The method according to claim 12 , wherein the energizer is held in the groove in a latch or lock configuration.
19. The method according to claim 12 , wherein at least a portion of the sealing member is loaded by the energizer against a housing cavity surface.
20. The method according to claim 12 , wherein the sealing member comprises a seal lip that is energized by the energizer.
21. The method according to claim 12 , further comprising providing a second sealing member having a second energizer located in a seal body groove of the second sealing member and wherein the second energizer engages a second groove in the housing cavity.
22. The method according to claim 12 , further comprising rotating the energizer to move the energizer deeper into the seal body cavity.
23. The method according to claim 22 , wherein the housing cavity comprises an entry chamfer to allow the energizer to rotate, deflect, and move deeper into the seal body cavity.
24. The method according to claim 23 , wherein the sealing member provides EMI shielding.