Power plug

• US 20030148643A1
• Filed: 02/06/2002
• Published: 08/07/2003
• Est. Priority Date: 02/06/2002
• Status: Active Grant

• Current Assignee: Furutech Co., Ltd.
• Original Assignee: Furutech Co., Ltd.
• Inventors: Yoji, Nishimuru
• Granted Patent: US 6,669,491 B2
• Time in Patent Office: Days
• US Class Current: 439/106
• CPC Class Codes: H01R 13/655 with earth brace
• CPC Class Codes: H01R 2103/00 Two poles
• CPC Class Codes: H01R 24/30 with additional earth or shield contacts

Abstract

A power plug is proposed, including a terminal base having at least one conductive terminal and a ground terminal; an electric wire having core wires connected to the conductive terminal and ground terminal, respectively; a cover integrally connected to the terminal base; and a ground mechanism for grounding isolated metal parts (such as screws). The ground mechanism can prevent quality of power provided through the power plug from being deteriorated by electromagnetic effect of the metal parts.

Claims

1. A power plug, comprising:

a terminal base having at least one conductive terminal and a ground terminal;

an electric wire having core wires connected to the conductive terminal and the ground terminal, respectively;

a cover integrally connected to the terminal base by a plurality of first screws; and

a ground mechanism for connecting the first screws to the ground terminal, allowing the first screws to be grounded.

2. The power plug of claim 1, wherein the ground mechanism includes a conductive member for connecting the first screws to the ground mechanism.

3. The power plug of claim 2, wherein the conductive member is a copper plate, which copper plate has one end thereof being connected to the ground terminal, and the other end thereof extending to screw holes, allowing the first screws to be respectively screwed into the screw holes and come into contact with the copper plate.

4. The power plug of claim 2, wherein two of the first screws are provided in the power plug, and the conductive member is a M-shaped copper plate, which copper plate has a central portion thereof being connected to the ground terminal, and two ends thereof respectively extending to two screw holes, allowing the two first screws to be respectively screwed into the screw holes and come into contact with the copper plate.

5. The power plug of claim 1, further comprising:

a wire fixing mechanism installed in the cover, which wire fixing mechanism includes a press board positioned at where the electric wire passes thereby, and a clamping member underneath the press board; and

two second screws respectively penetrating through the cover and screwed at two ends of the press board;

wherein the two second screws are screwed tight for making the press board move toward an inner wall of the cover, so as to press the electric wire to abut against the inner wall of the cover, and to be firmly clamped by the clamping member.

6. The power plug of claim 5, wherein the ground mechanism includes a first conductive member for connecting the first screws to the ground terminal allowing the first screws to be grounded;

a second conductive member for interconnecting the two second screws; and

a third conductive member for connecting the first screws to the second conductive member, so as to ground the second screws via the second conductive member and the first screws.

7. The power plug of claim 6, wherein two of the first screws are provided in the power plug, and the first conductive member is a M-shaped copper plate, which copper plate has a central portion thereof being connected to the ground terminal, and two ends thereof respectively extending to two first screw holes, allowing the two first screws to be respectively screwed into the first screw holes and come into contact with the copper plate.

8. The power plug of claim 7, wherein the second conductive member is a copper plate, which copper plate has two ends thereof respectively extending to two second screw holes, allowing the two second screws to be respectively screwed into the second screw holes and come into contact with the copper plate.

9. The power plug of the claim 8, wherein the second conductive member has a central portion thereof being exposed to one of the first screw holes, and the third conductive member is a metallic spring installed in this first screw hole, and is pressed when one of the first screws is screwed into the first screw hole, in a manner that one end of the metallic spring abuts against the first screw, and the other end of the metallic spring adjoins the central portion of the second conductive member.

10. A power plug, comprising:

a terminal base having at least one conductive terminal and a ground terminal;

an electric wire having core wires connected to the conductive terminal and the ground terminal, respectively;

two covers integrally connected to the terminal base by a plurality of screws, and capable of being coupled to each other for enclosing the conductive terminal and the ground terminal therein; and

a ground mechanism for connecting the screws to the ground terminal, allowing the screws to be grounded.

11. The power plug of claim 10, wherein the ground mechanism includes a conductive member for connecting the screws to the ground mechanism.

12. The power plug of claim 11, wherein the conductive member is a copper plate provided on an inner wall of one of the covers, which copper plate has one end thereof extending toward the ground terminal, and pressed to abut against the ground terminal when the two covers are coupled to each other, whereas the other end of the copper plate extends to screw holes, allowing the screws to be respectively screwed into the screw holes and come into contact with the copper plate.

13. The power plug of claim 11, wherein two of the screws are adopted in the power plug, and the conductive member is a T-shaped copper plate provided on an inner wall of one of the cover, which copper plate has a vertical end thereof extending toward the ground terminal, and pressed to abut against the ground terminal when the two covers are coupled to each other, whereas the other two ends of the copper plate respectively extend to two screw holes, allowing the two screws to be respectively screwed into the screw holes and come into contact with the copper plate.

14. A power plug, comprising:

a terminal base having at least one conductive terminal;

an electric wire having core wires connected to the conductive terminal and a ground terminal, respectively;

a cover integrally connected to the terminal base by a plurality of screws;

a ground wire having one end thereof being connected to the ground terminal, and the other end thereof extending to outside of the power plug and connected to an external ground device; and

a ground mechanism for connecting the screws to the ground terminal of the ground wire, allowing the screws to be grounded.