Power adapter

• US 7,632,119 B1
• Filed: 08/11/2008
• Issued: 12/15/2009
• Est. Priority Date: 08/11/2008
• Status: Active Grant

• Current Assignee: Cheng UEI Precision Industry Company Limited
• Original Assignee: Cheng UEI Precision Industry Company Limited
• Inventors: Yang, Hai Yan, Ma, Jian Rong
• Primary Examiner(s): Abrams; Neil
• Assistant Examiner(s): NGUYEN, PHUONGCHI T
• Application Number:
  US12/222,468
• Time in Patent Office: 491 Days
• Field of Search: 439/131, 439/132, 439/172, 439/171, 439/176, 439/518, 439/332, 439/333
• US Class Current: 439/172
• CPC Class Codes: H01R 13/625 Casing or ring with bayonet engagement
• CPC Class Codes: H01R 13/639 Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap
• CPC Class Codes: H01R 27/00 Coupling parts adapted for co-operation with two or more dissimilar counterparts for dissimilar contact members H01R13/35; supported only by co-operation with a counterpart H01R31/00; with a holder adapted for supporting apparatus to which its counterpart is attached H01R33/90
• CPC Class Codes: H01R 31/06 Intermediate parts for linking two coupling parts, e.g. adapter with a holder adapted for supporting apparatus to which its counterpart is attached H01R33/94

Abstract

A power adapter has a main body. A top of the main body defines a recess and an annular sidewall enclosing the recess. The recess has a locating depression arranged at a bottom thereof to be deviated from the center of the bottom. A plug is rotatably and detachably mounted in the recess. An elastic component mounted in the plug defines a contacting portion elastically protruding out of a bottom of the plug. The plug is locked in the recess by rotation so that the contacting portion is pressed against the bottom surface of the recess and compressed back elastically and then the contacting portion engages the locating depression under resilience action of the elastic component for preventing the plug from rotating with respect to the main body.

Claims

1. A power adapter comprising:

a main body, a top of the main body defining a recess and an annular sidewall enclosing the recess, the recess having a locating depression arranged at a bottom surface thereof so that the locating depression is deviated from a center of the bottom;

a plug rotatably and detachably mounted in the recess; and

an elastic component mounted in a plug body of the plug and defining a contacting portion elastically protruding out of a bottom of the plug body,

wherein the plug is locked in the recess by rotation with the contacting portion being elastically pressed against the bottom surface of the recess and then the contacting portion is located in the locating depression under resilience action of the elastic component for preventing the plug from being rotated with respect to the main body.

2. The power adapter as claimed in claim 1, wherein the plug has a conducting terminal received in the plug body, the conducting terminal defines a basic plate, one end of which connects with a conducting piece parallel to the basic plate, and the other end of the basic plate bends opposite to the conducting piece to form a conducting end.

3. The power adapter as claimed in claim 1, wherein the plug body has a conducting recess formed in a top thereof for receiving a conducting terminal, the plug body has a receiving recess defined in a side thereof and an ending recess communicating with the receiving recess and the conducting recess, a main terminal received in the main body defines a connecting portion, the connecting portion is placed in the receiving recess and then slid into the ending recess for electrically connecting with the conducting terminal.

4. The power adapter as claimed in claim 1, wherein the plug body defines a positioning hole passing therethrough, the elastic component has a containing shell received in the positioning hole and a spring received in the containing shell, and one end of the containing shell defines the contacting portion passing through the positioning hole.

5. The power adapter as claimed in claim 4, wherein the contacting portion has a free end of a dome shape for sliding in or out of the locating depression smoothly.

6. The power adapter as claimed in claim 4, wherein the containing shell has a receiving portion and the contacting portion is connected with one end of the receiving portion, the receiving portion and the contacting portion are all cylindrical and communicate with each other, and the diameter of the receiving portion is bigger than that of the contacting portion.