Modular tree with rotation-lock electrical connectors

• US 9,648,919 B2
• Filed: 06/04/2015
• Issued: 05/16/2017
• Est. Priority Date: 05/08/2012
• Status: Active Grant

• Current Assignee: Willis Electric Company Limited
• Original Assignee: Willis Electric Company Limited
• Inventors: Chen, Johnny
• Primary Examiner(s): DZIERZYNSKI, EVAN P
• Application Number:
  US14/730,649
• Publication Number:
  US 20160021958A1
• Time in Patent Office: 712 Days
• CPC Class Codes: A41G 1/005 luminous or luminescent
• CPC Class Codes: A41G 1/007 Artificial trees
• CPC Class Codes: A47G 2033/0827 illuminated
• CPC Class Codes: A47G 33/06 Artificial Christmas trees
• CPC Class Codes: A47G 33/08 Christmas tree decorations
• CPC Class Codes: F21V 23/06 the elements being coupling devices , e.g. connectors
• CPC Class Codes: F21W 2121/00 Use or application of lighting devices or systems for decorative purposes, not provided for in codes F21W2102/00 – F21W2107/00
• CPC Class Codes: F21W 2121/04 for Christmas trees
• CPC Class Codes: H01R 13/502 composed of different pieces H01R13/514 takes precedence
• CPC Class Codes: H01R 24/38 having concentrically or coaxially arranged contacts
• CPC Class Codes: H01R 31/00 Coupling parts supported only by co-operation with counterpart
• CPC Class Codes: H01R 43/26 for engaging or disengaging the two parts of a coupling device structural association with two-part coupling device H01R13/629
• CPC Class Codes: Y10T 29/49117 Conductor or circuit manufacturing

Abstract

A rotation-locking lighted artificial tree that includes a first and second portion. The first portion includes a trunk, first electrical connector, and first wiring harness. The first electrical connector includes a first body portion and a first electrical contact set. The first body portion includes multiple projections electrically isolated from the first electrical contact set. The second tree portion includes a second electrical connector and a second wiring harness. The second electrical connector includes a second body portion and a second electrical contact set, the second body portion including multiple recesses. When the first tree portion couples to the second, the first and second electrical contact sets form an electrical connection and the recesses of the second body portion receive the projections of the first body portion, thereby electrically connecting and mechanically coupling the first tree portion to the second tree portion.

Claims

1. A tree electrical connection system for a multi-section artificial lighted tree, comprising:

a first electrical connector, including;

a first connector body comprising a generally non-conductive plastic material and including an insulating portion projecting outwardly from a surface of the first connector body;

a first set of electrical contacts, the first set of electrical contacts comprising four electrical contacts for conducting electricity, each of the four electrical contacts secured to the first connector body, the four electrical contacts positioned relative to the insulating portion projecting outwardly from the surface of the first connector body such that the insulating portion projecting outwardly from the surface of the first connector body is between a portion of at least one of the four electrical contacts and a portion of another of the four electrical contacts, thereby separating and at least partially electrically insulating the at least one of the four electrical contacts from the other of the four electrical contacts, thereby reducing the possibility of arcing between the at least one of the four electrical contacts and the other of the four electrical contacts;

a second electrical connector, including;

a second connector body comprising a generally non-conductive plastic material;

a second set of electrical contacts, the second set of electrical contacts comprising four electrical contacts for conducting electricity, each of the four electrical contacts secured to the second connector body;

wherein the first electrical connector is configured to couple to the second electrical connector such that the first set of electrical contacts engages the second set of electrical contacts.

2. The tree electrical connection system of claim 1, wherein the first connector body includes rotation-locking structure.

3. The tree electrical connection system of claim 2, wherein the rotation-locking structure comprises a plurality of projections, and the plurality of projections define a plurality of recesses between the projections, the plurality of projections and the plurality of first recesses forming a sawtooth pattern.

4. The tree electrical connection system of claim 3, wherein the plurality of projections are distributed circumferentially about the surface of the first connector body.

5. The tree electrical connection system of claim 2, wherein the second connector body includes rotation-locking structure configured to engage the rotation locking structure of the first connector body.

6. The tree electrical connection system of claim 1, wherein the insulating portion projecting outwardly from the surface of the first connector body comprises a cylindrical portion defining an inside cavity, and the portion of the at least one of the four electrical contacts is inside the cavity and the portion of the other of the four electrical contacts is outside the cavity, such that the cylindrical portion is between the portion of the at least one of the four electrical contacts and the portion of the other of the four electrical contacts.

7. The tree electrical connection system of claim 1, wherein the insulating portion projecting outwardly from the surface of the first connector body projects further away from the surface than one or more of the four electrical contacts of the first set of electrical contacts.

8. The tree electrical connection system of claim 1, wherein at least two electrical contacts of the first set of electrical contacts comprise a cylindrical shape.

9. The tree electrical connection system of claim 1, wherein a height of one of the four electrical terminals is greater than a height of another one of the four electrical terminals such that an end of the one of the four electrical terminals is further from the surface of the first connector body as compared to an end of the other one of the four electrical terminals.

10. The tree electrical connection system of claim 1, further comprising a fuse connected in electrical series with an electrical contact of the first set of electrical contacts and an electrical contact of the second set of electrical contacts.

11. A lighted artificial tree, comprising:

a first tree portion, including;

a first trunk portion;

a first plurality of wires, each of the first plurality of wires comprising an insulated conductor;

a first electrical connector positioned at least partially within the first trunk portion, the first electrical connector including a first connector body and four electrical terminals secured to the first connector body, the first connector body including first rotation-locking structure, and the four electrical terminals of the first electrical connector mechanically and electrically connecting to the first plurality of wires inside the first trunk portion;

a second tree portion, including;

a second trunk portion;

a second plurality of wires, each of the second plurality of wires comprising an insulated conductor;

a second electrical connector positioned at least partially within the second trunk portion, the second electrical connector including a second connector body and four electrical terminals secured to the second connector body, the second connector body including second rotation-locking structure, and the four electrical terminals of the second electrical connector mechanically and electrically connecting to the second plurality of wires;

wherein the first rotation-locking structure of the first connector body is configured to engage the second rotation-locking structure of the second connector body.

12. The lighted artificial tree of claim 11, wherein the first rotation-locking structure comprises a plurality of projections distributed about a surface of the first connector body, and the plurality of projections define a plurality of recesses between the projections, the plurality of projections and the plurality of first recesses forming a sawtooth pattern.

13. The lighted artificial tree of claim 12, wherein the plurality of projections are distributed circumferentially about the surface of the first connector body.

14. The lighted artificial tree of claim 11, wherein the first connector body includes an insulating portion projecting outwardly from a surface of the first connector body.

15. The lighted artificial tree of claim 14, wherein the insulating portion projecting outwardly from the surface of the first connector body comprises a cylindrical portion defining an inside cavity, and a portion of at least one of the four electrical contacts of the first electrical connector is inside the cavity and a portion of another of the four electrical contacts of the first electrical connector is outside the inside cavity, such that the cylindrical portion separates the portion of the at least one of the four electrical contacts of the first electrical connector and the portion of the other of the four electrical contacts of the first electrical connector.

16. The lighted artificial tree of claim 14, wherein the insulating portion projecting outwardly from the surface of the first connector body projects further away from the surface than one or more of the four electrical contacts of the first electrical connector.

17. The lighted artificial tree of claim 14, wherein at least two of the four electrical terminals of the first electrical connector comprise a cylindrical shape.

18. The lighted artificial tree of claim 11, wherein a height of one of the four electrical terminals of the first electrical connector is greater than a height of another one of the four electrical terminals of the first electrical connector such that an end of the one of the four electrical terminals of the first electrical connector is further from a top surface of the first connector body as compared to an end of the other one of the four electrical terminals of the first electrical connector, the top surface being a planar surface perpendicular to a direction of the height of the one of the four electrical terminals of the first electrical connector.

19. The lighted artificial tree of claim 11, further comprising a fuse connected in electrical series with an electrical contact of the first electrical connector and an electrical c terminal of the second electrical connector.

20. The lighted artificial tree of claim 11, further comprising a first light string in electrical connection with the first electrical connector, and a second light string in electrical connection with the second electrical connector.