Mechanical and electrical connector for artificial holiday tree poles
A locking mechanical and electrical connector for joining two sections of an artificial holiday tree includes an upper and a lower part that thread to a joined configuration from a separated configuration and locked in the joined position by a ball detent. Once completely joined, electrical contacts carried by the upper part are in electrical contact with electrical contacts carried by the lower part. The electrical wiring of the upper and lower parts is managed using harnesses and kept electrically separated from the two sections of the artificial tree. In joining of tree tubing sections, the weight of the upper section helps drive the rotation of the upper part with respect to the lower part, assisted by the low friction design of the threaded connection and the ball contact between the upper part electrical contacts and the interface surface of the lower part.
1. A connector for connecting sections of and supplying power to a lighted artificial holiday tree, said tree being made of sections joined together, each section having an upper end and an opposing lower end, said connector comprising:
(a) an upper part having a passage formed there through and a wiring chamber, said wiring chamber being electrically isolated from said passage, a lower end of a first section being insertable into said passage and securable to said upper part, said wiring chamber having at least one electrical contact; and
(b) a lower part having a passage formed there through and a wiring chamber, said wiring chamber of said lower part being electrically isolated from said passage of said lower part, and an upper end of a second section being insertable into said passage of said lower part and securable to said lower part, said wiring chamber of said lower part having at least one electrical contact, and
wherein said upper part and said lower part are threadably joinable and separable by rotating said upper part with respect to said lower part between a joined position and a separated position, and
wherein said when said upper part and said lower part are joined, said at least one contact of said upper part and said at least one contact of said lower part are in electrical contact with each other and wherein when said upper part and said lower part are rotated from said joined configuration, said at least one electrical contact is broken.
2. The connector of claim 1 , wherein said passage of said upper part is defined by an interior wall, said interior wall carrying interior threads, and wherein lower part includes an exterior wall carrying exterior threads, and wherein when said upper part and said lower part are joined, said threads on said exterior wall of said lower part thread to said threads of the interior wall of said upper part.
3. The connector of claim 2 , wherein said interior threads have a triangular cross section and said exterior threads are trapezoidal.
4. The connector of claim 1 , wherein said at least one electrical contact of said upper part is pin and said pin is movable with respect to a spring, and wherein when said upper part is rotated with respect to said lower part, said lower part compresses said spring so that said pin is urged by said spring into electrical contact with said electrical contact of said lower part.
5. The connector of claim 1 , wherein said upper part further comprises at least one wire, said wire of said at least one wire carrying a terminal electrically connected to said electrical contact of said upper part.
6. The couple of claim 5 , wherein said upper part further comprises a wiring harness to manage said at least one wire.
7. The connector of claim 1 , wherein said lower part further comprises at least one wire, said wire of said at least one wire carrying a terminal electrically connected to said electrical contact of said lower part.
8. The connector of claim 7 , wherein said lower part further comprises a wiring harness to manage said at least one wire.
9. The connector of claim 1 , wherein said lower part has an interface surface wherein, when as said upper part and said lower part are rotated to said joined position from said separated position, said interface surface of said lower part closes to said upper part.
10. The connector of claim 9 , wherein said interface surface carries locking flange preventing over-rotation of said upper part with respect to said lower part.
11. The connector of claim 9 , wherein said interface surface of said lower part carries a recess and wherein said upper part carries a ball detent, and wherein when said upper part has been rotated to said joined position, said ball detent seats in said recess.
12. The connector of claim 9 , wherein said interface surface of said lower part carries a ramp, and wherein said at least one electrical contact said upper part is a spring loadable pin, rotation of said upper part with respect moves said pin up said ramp thereby loading said pin before said upper part reaches said joined position with respect to said lower part.