Electrical plug connector with double casing

• US 9,490,573 B2
• Filed: 03/06/2015
• Issued: 11/08/2016
• Est. Priority Date: 03/07/2014
• Status: Active Grant

• Current Assignee: Chant Sincere Co., Ltd.
• Original Assignee: Chant Sincere Co., Ltd.
• Inventors: Chien, Yu Chin, Lin, Yong-Sheng, Hsu, Chun-Hsiang
• Primary Examiner(s): Patel, Tulsidas C
• Assistant Examiner(s): Leigh, Peter G
• Application Number:
  US14/640,067
• Publication Number:
  US 20150255917A1
• Time in Patent Office: 613 Days
• Field of Search: 439/320
• US Class Current: 1/1
• CPC Class Codes: H01R 13/622 Screw-ring or screw-casing H01R13/623 takes precedence

Abstract

A plug connector suitable for connecting with a socket connector including a first internal screw thread is provided. The plug connector includes an internal casing having an inside space, a set of terminals disposed in said inside space, a sleeve tube and an external casing. The sleeve tube is fixed to said internal casing and includes an external hook. The external casing is movably covered to said internal casing and includes a first external screw thread, an internal hook and a concaved slot caving in the inner surface of the external casing facing to said internal casing. The internal hook forms one of walls of said concaved slot. The external hook is movably disposed in said concaved slot. When said socket connector screws to said plug connector, said external casing is pulled toward said socket connector, and said internal hook of said external casing contact said external hook of said sleeve tube.

Claims

1. A plug connector suitable for connecting with a socket connector mainly configuring a first internal screw thread comprising:

an internal casing (110), said internal casing includes an inside space, a first end and a second end opposite to said first end;

a set of terminals (120), said set of terminals is located in said inside space;

a conductive sleeve tube (130), said sleeve tube is fixed on the second end and includes an external hook that extends toward said first end; and

a conductive external casing (140), said external casing, which is movably sleeved on said internal casing, comprises;

a third end and a fourth end that opposite to said third end, a first external screw thread located in said third end, and an internal hook located in said fourth end, and a concaved slot located neighboring to said internal hook, said concaved slot is concaved on the inner surface of the external casing facing the outer surface of said internal casing, wherein said internal hook (146) is on the walls of said concaved slot, and said external hook is movably received by said concaved slot;

when said first internal screw thread of said socket connector is screwed into said first external screw thread of said plug connector, said external casing is pulled towards said socket connector such that said internal hook of said external casing contacts with said external hook (132) of said sleeve tube;

wherein said plug connector further includes a transmission cable comprises;

a plurality of first conducting wires covered by the isolating layer, and at least one second conducting wire which is exposed to the isolating layer wherein said first conducting wires pass through said sleeve tube and connects to said set of terminals, and the second conducting wire is contacted said sleeve tube;

wherein said plug connector further includes a flexible ring that is disposed between said sleeve tube and said transmission cable; and

wherein said second conducting wire (156) which is extended from said sleeve tube and then is folded to insert into a gap (157) between the flexible ring (160) and said sleeve tube.

2. The plug connector of claim 1, wherein said plug connector further includes a retaining plug which is inserted into said second end of said internal casing, comprising a plurality of first holes and a plurality of second holes which are disposed along the extending direction of said set of terminals and are connected with each other in which said set of terminals are disposed in said first holes of said retaining plug, the diameter(D1)of each first hole is larger than the diameter (D5) of each terminal, and the diameter of each first holes is larger than the diameter (D2) of each second hole.

3. The plug connector of claim 2, wherein said retaining plug is an insulator.

4. A plug connector suitable for connecting with a socket connector mainly configuring a first internal screw thread comprising:

an internal casing (110), said internal casing includes an inside space, a first end and a second end opposite to said first end;

a set of terminals (120) said set of terminals is located in said inside space;

a sleeve tube (130), said sleeve tube is fixed on the second end and includes an external hook that extends toward said first end; and

an external casing (140), said external casing, which is movably sleeved on said internal casing, comprises;

a third end and a fourth end that opposite to said third end, a first external screw thread located in said third end, and an internal hook located in said fourth end, and a concaved slot located neighboring to said internal hook, said concaved slot is concaved on the inner surface of the external casing facing the outer surface of said internal casing, wherein said internal hook (146) is on the walls of said concaved slot, and said external hook is movably received by said concaved slot;

when said first internal screw thread of said socket connector is screwed into said first external screw thread of said plug connector, said external casing is pulled towards said socket connector such that said internal hook of said external casing contacts with said external hook (132) of said sleeve tube and;

wherein said internal casing includes an annular ring that is disposed in said first end, and said external diameter (D3) of said annular ring is larger than the internal diameter (D4) of said first screw thread of said external casing.

5. A plug connector suitable for connecting with a socket connector mainly configuring a first internal screw thread comprising:

an internal casing (110), said internal casing includes an inside space, a first end and a second end opposite to said first end;

a set of terminals (120), said set of terminals is located in said inside space;

a sleeve tube (130), said sleeve tube is fixed on the second end and includes an external hook that extends toward said first end; and

an external casing (140), said external casing, which is movably sleeved on said internal casing, comprises;

a third end and a fourth end that opposite to said third end, a first external screw thread located in said third end, and an internal hook located in said fourth end, and a concaved slot located neighboring to said internal hook, said concaved slot is concaved on the inner surface of the external casing facing the outer surface of said internal casing, wherein said internal hook (146) is on the walls of said concaved slot, and said external hook is movably received by said concaved slot;

when said first internal screw thread of said socket connector is screwed into said first external screw thread of said plug connector, said external casing is pulled towards said socket connector such that said internal hook of said external casing contacts with said external hook (132) of said sleeve tube and;

wherein said internal casing includes a second external screw thread that is located in said second end, and said sleeve tube includes a second internal screw thread that corresponds to said second external screw thread;

said sleeve tube is screwed into and fixed to said internal casing; and

wherein said internal casing includes an anti-rotation unit (119) whose external diameter(D6) is larger than the internal diameter(D7)of said second internal screw thread.