Locking threaded connection coaxial connector
View Patent ↗A coaxial connector includes a clamp nut dimensioned to fit over the outer conductor, the clamp nut having threads that mate with corresponding threads on the connector body. A clamp element is positioned between the clamp nut and a leading edge of the outer conductor. The connector body having an annular wedge surface dimensioned to mate with the leading edge of the outer conductor. The threads draw the clamp nut towards the connector body, to clamp the leading edge between the clamp element and the annular wedge surface. A surface-to-surface positive stop between the clamp nut and the connector body limits the compression force to a predetermined maximum by preventing further movement of the clamp nut towards the connector body. A thread lock is engaged as the positive stop is reached; the thread lock inhibiting unthreading of the clamp nut from the connector body.
1. A coaxial connector for use with a coaxial cable having an outer conductor, comprising:
a clamp nut dimensioned to fit over the outer conductor, the clamp nut having threads that mate with corresponding threads on a connector body;
a clamp element between the clamp nut and a leading edge of the outer conductor;
the connector body having an annular wedge surface dimensioned to mate with the leading edge of the outer conductor;
the threads drawing the clamp nut towards the connector body, driving the clamp element to exert a compression force that urges the leading edge into contact with the annular wedge surface;
a surface to surface positive stop between the clamp nut and the connector body limiting the compression force to a predetermined maximum by preventing further movement of the clamp nut towards the connector body; and
a thread lock engaged as the positive stop is reached; the thread lock inhibiting unthreading of the clamp nut from the connector body.
2. The coaxial connector of claim 1 , wherein the thread lock comprises an interference fit between a body locking surface of the connector body and a clamp nut locking surface of the clamp nut.
3. The coaxial connector of claim 2 , wherein a contact area of the interference fit is along at least one arc surface segment of at least one of the connector body locking surface and the clamp nut locking surface that is less than an entire circumference.
4. The coaxial connector of claim 2 , wherein the body locking surface is an inner diameter of the connector body and the clamp nut locking surface is an outer diameter surface of the clamp nut.
5. The coaxial connector of claim 2 , wherein the body locking surface is an outer diameter of the connector body and the clamp nut locking surface is an inner diameter surface of the clamp nut.
6. The coaxial connector of claim 2 , further including an angled guide edge on the body locking surface.
7. The coaxial connector of claim 1 , wherein the thread lock comprises corrugations between the clamp nut and the connector body at the positive stop.
8. The coaxial connector of claim 7 , further including an interference fit between a body locking surface of the connector body and a clamp nut locking surface of the clamp nut.
9. The coaxial connector of claim 1 , wherein the thread lock comprises a ramp protrusion of the connector body that interlocks with a ramp groove of the clamp nut.
10. The coaxial connector of claim 9 , further including an interference fit between a body locking surface of the connector body and a clamp nut locking surface of the clamp nut.
11. The coaxial connector of claim 1 , wherein the thread lock comprises a deflectable tab of the clamp nut that engages a socket of the connector body.
12. The coaxial connector of claim 11 , wherein the deflectable tab is manually deflectable from an exterior of the coaxial connector.
13. The coaxial connector of claim 1 , wherein the positive stop comprises an end of the connector body that contacts a shoulder of the clamp nut.
14. The coaxial connector of claim 1 , wherein the positive stop comprises an end of the clamp nut that contacts a shoulder of the connector body.
15. The coaxial connector of claim 1 , further including a visual indicia that indicates when the positive stop has been reached.
16. A method for manufacturing a coaxial connector for use with a coaxial cable having an outer conductor, comprising the steps of:
providing a connector body with an annular wedge surface dimensioned to mate with a leading edge of the outer conductor;
providing a clamp nut dimensioned to fit over the outer conductor, the clamp nut having threads that mate with corresponding threads on the connector body;
positioning a clamp element between the clamp nut and the leading edge of the outer conductor;
the threads configured to draw the clamp nut towards the connector body, driving the clamp element to exert a compression force that urges the leading edge into contact with the annular wedge surface;
the clamp nut and the connector body formed with a surface to surface positive stop between them, limiting the compression force to a predetermined maximum by preventing further movement of the clamp nut towards the connector body; and
the clamp nut and the connector body formed with a thread lock engaged as the positive stop is reached; the thread lock inhibiting unthreading of the clamp nut from the connector body.
17. The method of claim 16 , wherein the clamp nut is formed from a polymeric material.
18. The method of claim 17 , wherein the clamp nut is formed by injection molding.
19. A coaxial connector for use with a coaxial cable having an outer conductor, comprising:
a clamp nut dimensioned to fit over the outer conductor, the clamp nut having threads that mate with corresponding threads on a connector body;
a clamp element between the clamp nut and a leading edge of the outer conductor;
the connector body having an annular wedge surface dimensioned to mate with the leading edge of the outer conductor;
the threads drawing the clamp nut towards the connector body, driving the clamp element to exert a compression force that urges the leading edge into contact with the annular wedge surface;
a surface to surface positive stop between the clamp nut and the connector body limiting the compression force to a predetermined maximum by preventing further movement of the clamp nut towards the connector body;
an interference fit between a body locking surface on an inner diameter of the connector body and a clamp nut locking surface on an outer diameter surface of the clamp nut; and
an angled guide edge on the body locking surface;
wherein the interference fit engaged as the positive stop is reached; the
interference fit inhibiting unthreading of the clamp nut from the connector body.
20. The coaxial connector of claim 19 , wherein the clamp nut is a polymeric material with a limited deformation characteristic.