JPH0565071U - Connection structure of plug jack - Google Patents

Abstract

(57) [Abstract] [Purpose] Concerning the connection structure of the plug jack, the purpose is to prevent electric shock from the plug in the middle of connection, and [Structure] Slide all the side surfaces of the plug exposed and protruding from the plug case by being biased by spring means. It is equipped with an insulating tube that covers freely and retracts inside the plug case when the tip is pressed.When the plug is inserted into the jack, the tip of the insulating tube hits the end surface of the jack case and It is configured to gradually retract inside.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a connecting structure of a plug jack.

[0002]

[Prior Art]

 In order to supply AC power to the device and equipment, a plug 2 provided at the tip of the cable 1 is used as shown in the perspective view of FIG. 3, and a jack 3 for external power supply is provided as shown in the side view of FIG. Insert and combine with.

The plug 3 is held in the plug case 8, and the jack 3 is held in the jack case 7.

[0004]

[Problems to be solved by the device]

 There are many types of plugs such as 2P, parallel 2P and 3P twists, but most of the plugs are projected and exposed from the plug case.

Therefore, in the transient period of inserting the plug into the jack, the live part is momentarily exposed in a conductive state where the plug is in contact with the jack. If a person comes into contact with this live part directly or through a conductive material, there is a problem that it is extremely dangerous because of electric shock.

The present invention aims to prevent electric shock from a plug that is being connected.

[0007]

[Means for Solving the Problems]

 In the present invention, as shown in the side view of FIG. 1, the entire side surface 2a of the plug 2 which is biased by the spring means 4 and protrudes from the plug case 5 and is exposed is slidably covered and the spring means 4 of the spring means 4 is provided. When the tip 6a is pressed against the urging force, an insulating cylinder 6 that retracts inside the plug case 5 is provided, and when the plug 2 is inserted into the jack 3, the tip 6a of the insulating cylinder 6 becomes the jack case 7. The end surface 7a of the plug is abutted and gradually retracted inside the plug case 5.

[0008]

[Action]

 The entire side surface of the plug protruding and exposed from the plug case is covered with an insulating tube, and the structure is such that the insulating tube gradually retracts inside the plug case as it is inserted into the jack, so the plug will not be exposed. There is no risk of electric shock from direct contact with the plug.

[0009]

【Example】

 In the present invention, as shown in the side view of FIG. 1 and the perspective view of the plug of FIG. A slidable cylinder 6 made of synthetic resin, which slidably covers the inner wall of the plug case 5 and operates so as to retract into the plug case 5 when the tip 6a is pressed against the bias of the spring means 4. When the plug 2 is inserted into the jack 3, the tip portion 6a of the insulating cylinder 6 abuts against the end surface 7a of the jack case 7 holding the jack 3 and gradually retracts inside the plug case 5.

The insulating cylinder 6 is slidably inserted in a long hole 5 a provided in the plug case 5, and has a projection at its end so as not to jump out to the outside when it is urged by the spring means 4 to project. 6b is provided and is fitted into the groove 5b provided along the long hole 5a to cope with the problem.

As a result, the plug 2 is not exposed between the jack 3 and the risk of electric shock from a person coming into contact with the plug 2 directly or via a conductive material.

[0012]

[Effect of the device]

 According to the present invention, it is possible to prevent a person from being directly or indirectly contacted with a live plug to receive an electric shock, and a great effect can be exerted on safety when the AC cord of a home electric appliance or an OA device is inserted. ..

[Brief description of drawings]

FIG. 1 is a side view of a connection structure of a plug jack of the present invention,

2 is a perspective view of the plug of FIG. 1,

FIG. 3 is a perspective view of a conventional plug,

FIG. 4 is a side view of a conventional plug jack coupling structure,

[Explanation of symbols]

2 plugs, 2a all sides, 3
Jack, 4 spring means, 5, 8
Plug case, 5a long hole, 5b groove,
6 insulating tube, 6a tip,
6b protrusion, 7 jack case,
7a end face,

Claims (1)

[Scope of utility model registration request] 1. A plug case biased by spring means (4).
All sides (2a) of the plug (2) protruding and exposed from (5) are slidably covered, and when the tip portion (6a) is pressed against the bias of the spring means (4), It is equipped with an insulating cylinder (6) that retracts inside the plug case (5), and when the plug (2) is inserted into the jack (3), the insulating cylinder (6)
The connecting structure of the plug jack characterized in that the tip portion (6a) of (6) hits the end surface (7a) of the jack case (7) and is gradually retracted into the inside of the plug case (5). ..