Connectors with a pin, a housing, and one or more springs
View Patent ↗The present application relates to connectors that use canted coil springs to retain a pin to a housing. The connectors have increased disconnect to connect force ratios. Dual concentric spring configuration allows for an initial locking configuration that can be overcome with higher force and deflection of the second spring. Dual springs in series in a constrained groove can require a high force for connector disconnect, since force vectors may be in a direction relatively close to being along the spring major axis. A curved groove wall can offer resistance to a spring that is required to slide first into the groove in order to allow disconnect.
1. A latching connector comprising:
a housing comprising a bore, a pin comprising a tapered insertion end, a first spring comprising a plurality of first coils and a first coil axis passing through the plurality of first coils, and a second spring comprising a plurality of second coils and a second coil axis passing through the plurality of second coils, wherein at least one of the first spring and the second spring is a canted coil spring;
a first groove comprising two sidewalls and a bottom wall located between the two sidewalls formed in the bore of the housing having the first spring and the second spring positioned in the first groove, said first spring and said second spring being positioned beside each other so that the first coil axis is located outside of the second spring, the second coil axis is located outside of the first spring, and a portion of the first spring protrudes out of said first groove;
a second groove formed on an exterior of the pin;
a connected state in which the pin is latched to the housing, both the first spring and the second spring are biased, and at least one of the first spring and the second spring are deflected to a first deflected position; and
wherein the first spring or the second spring has a second deflected position, which is further deflected from the first deflected position, when the pin is disconnected from the housing.
2. The connector according to claim 1 , wherein the first spring or the second spring is an axial canted coil spring.
3. The connector according to claim 1 , wherein the first spring or the second spring is a radial canted coil spring.
4. The connector according to claim 1 , wherein the first spring that protrudes out the first groove deflects at a lower deflection force than a deflection force to deflect the second spring.
5. The connector according to claim 1 , further comprising a dividing member located between the first spring and the second spring.
6. The connector according to claim 5 , wherein the dividing member comprises a slanted surface and is disposed between the first spring and the second spring.
7. The connector according to claim 5 , wherein the dividing member is movable radially or axially within the first groove and is disposed between the first spring and the second spring.
8. The connector according to claim 5 , wherein the first spring, the second spring, and the dividing member are positioned side-by-side-by-side within the first groove.
9. The connector according to claim 5 , wherein a contact point between the dividing member and the first spring or the second spring is along an arc of the first coil of the first spring or the second coil of the second spring, and the contact point is less than 20 degrees from a major axis of the first coil of the first spring or a major axis of the second coil of the second spring.
10. The connector according to claim 1 , wherein the first spring is canted one way and the second spring is canted another way, which differs from the one way.
11. The connector according to claim 1 , wherein both the first spring and the second spring are deflected during connection of the pin to the housing but prior to either the first spring or the second spring protruding into the second groove.
12. The connector according to claim 1 , wherein the first spring or the second spring is turned during connection of the pin to the housing and unturned during disconnection of the pin from the housing.
13. The connector of claim 1 , wherein the pin comprises a second pin groove, which is spaced from the second groove and is larger than the second groove.
14. The connector of claim 1 , wherein the second spring surrounds the first spring, or the first spring and the second spring are positioned side-by-side within the first groove.
15. The connector of claim 1 , wherein the first spring and the second spring each contact the first groove.
16. A connector comprising:
a housing comprising a bore and a housing groove comprising two sidewalls and a bottom wall located between the two sidewalls;
a pin comprising a pin groove and a tapered insertion end;
a first coil spring and a second coil spring retained in the housing groove with a portion of the first coil spring protruding out said housing groove;
wherein the pin is positioned in the housing bore and latched to the housing with the first coil spring captured by a common groove defined by the housing groove and the pin groove and the first coil spring and the second coil spring each directly contacting the housing groove; and
wherein deflection of the first coil spring or the second coil spring is required for unlatching and separating the pin from the housing.
17. The connector according to claim 16 , wherein the first coil spring or the second coil spring is a canted coil spring comprising a plurality of interconnected canted coils.
18. The connector according to claim 17 , wherein the first coil spring or the second coil spring is a radial canted coil spring.
19. The connector according to claim 17 , wherein the first coil spring has a ring inside diameter that is smaller than a ring inside diameter of the second coil spring.
20. The connector according to claim 17 , further comprising a dividing member located between the first coil spring and the second coil spring.
21. The connector according to claim 20 , wherein the dividing member comprises a slanted surface.
22. The connector according to claim 20 , wherein the dividing member is movable radially or axially within the housing groove.
23. The connector according to claim 20 , wherein the first spring, the second spring, and the dividing member are positioned side-by-side-by-side within the housing groove.
24. The connector according to claim 20 , wherein a contact point between the dividing member and the first spring or the second spring is along an arc of a canted coil of the first spring or the second spring that is less than 20 degrees from a major axis of the canted coil.
25. The connector according to claim 20 , wherein the first coil spring deflects at a lower deflection force than a deflection force to deflect the second coil spring.
26. The connector according to claim 17 , wherein the first coil spring or the second coil spring is an axial canted coil spring.
27. The connector according to claim 16 , wherein the first spring is canted one way and the second spring is canted another way, different from the one way.
28. The connector according to claim 16 , wherein the first coil spring or the second coil spring is turned during connection of the pin to the housing and unturned during disconnection of the pin from the housing.
29. The connector according to claim 16 , wherein the first coil spring comprises a plurality of first coils and a first coil axis passing through the plurality of coils and the second coil spring comprises a plurality of second coils and a second coil axis passing through the plurality of coils, and wherein the first coil axis is located outside of the second coil spring and the second coil axis is located outside of the first coil spring.