JPS5841663Y2 - Plug with 2-pole terminal and 3-pole terminal - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of an electrical connection plug, and particularly relates to an insertion plug having a structure including a two-pole terminal and a three-pole terminal.

As is well known, a plug is an electrical connection device that is inserted into a power outlet when connecting various electrical appliances to a power source.

2. Description of the Related Art Generally, electric appliances used in general households are connected to a power source through plugs with two-pole terminals.

However, some types of electrical appliances, such as washing machines, must be connected to the ground at the same time as they are connected to the power source.

Three-prong terminal plugs with a ground connection are required for these appliances.

In addition, in recent years, when connecting various electrical appliances to power, it has been recommended to connect to the power and at the same time to connect to the ground, and the development of three-prong terminal plugs and electrical outlets for them has been promoted.

Conventionally, various electrical appliances are fitted with either a two-prong terminal plug or a three-prong terminal plug, so it is not necessary to go to the trouble of replacing the plug in places that have outlets that do not support these plugs. The problem is that it cannot be used unless it is used.

This invention was made to solve the above-mentioned problems, and specifically, a pair of electrical connection insertion blades are provided on one side of the insulating base, and a pair of insert blades for electrical connection are provided on the opposite side of the insulating base. An insertion plug comprising a pair of electrical connection insertion blades and a ground connection insertion blade that are continuous with or electrically connected to the pair of electrical connection insertion blades; A plug including a two-pole terminal and a three-pole terminal, and a cap body that is detachable and selectively insulatingly covers each row of insert blades formed in opposite directions of the plug. It's a plug.

Hereinafter, an insertion plug provided with a two-pole terminal and a three-pole terminal according to this invention will be described in detail based on a specific embodiment shown in the drawings.

In the figure, an insulating substrate 1 is obtained by molding a highly insulating synthetic resin material.

In one example, the insulating base 1 may be constructed by connecting a pair of generally symmetrical casings 2, 2 with a screw 3 and a nut 4, or each insert blade and It may be integrally molded with electrical cords electrically connected to each other.

In either case, the insulating base 1 is provided with a pair of electrical connection insertion blades 5A, 5B on one side 1A, and a pair of electrical connection insertion blades 5A, 5B on the opposite side.
A pair of electrical connection insertion blades 6A, 6B and a ground connection insertion blade 7 are provided which are continuous with or electrically connected to B.

The electrical connection insert blades 5A, 6A are connected to the electrical connection cord 8.
The electrical connection plug blades 5B and 6B are connected to one pole 8A, and the ground connection plug blades 7 are connected to the other pole 8B of the electrical connection cord 8.
are electrically connected to the ground connection cord 9 inside the insulating base 1 by well-known connection means.

On the other hand, a cap body 1 suitable for insulatingly enclosing the insert blade row is attached to the edge portion of the insulating base 1 on the side where each insert blade row is formed.
Retaining parts 11 A, 11 B that can be detachably attached to 0
is the provision.

The cap body 10 is made of a highly insulating synthetic resin material, and has a retaining part 12 on one end side that engages with the engaging parts 11A and 11B provided on both ends of the insulating base 1. The other end has an opening 13 through which the ground connection insert blade 7 can be electrically connected to the outside.

Further, the cap body 10 includes a pair of electrical connection insertion blade receiving portions 14A that are open toward the side where the engaging portion 12 is formed.
, 14B and a grounding connection insertion blade receiving portion 15.

Therefore, the cap body 10
can be removably inserted and inserted into either side of the insert blade row formation side, and especially when it is engaged and inserted into the three-pole terminal formation side, the grounding connection can be made at the corresponding position of the grounding connection insert blade. It is formed in such a way that an opening for pole connection is located therein.

According to the plug of this invention having the above structure, when the plug is used as a power connection plug for an electric appliance, it can be used for either a two-prong outlet or a three-prong outlet. Power can be connected without replacing the plug.

In other words, if the compatible power outlet is a two-pole terminal outlet, it can be used as a two-pole terminal plug by simply inserting an insulating cap body into the three-pole terminal side of the two-pole plug. On the other hand, in the case of a three-pole terminal outlet, it can be used as a three-pole terminal plug by simply inserting the insulating cap into the two-pole terminal forming side.

In this way, the plug of this invention can be used for dual-pole outlets, and can be used without having to replace the plug that is already provided on the electrical appliance side according to the outlet being used, as in the past. In this respect, it can be said to be an extremely effective and practical plug.

[Brief explanation of drawings]

The drawing shows a specific embodiment of the plug equipped with a two-pole terminal and a three-pole terminal according to the invention, and shows the first embodiment of the plug.
The figure is a side sectional view showing a state in which the cap body is engaged and inserted into the three-pole terminal side, and FIG. 2 is a side view of the insulating cap body. 1...Insulating base, 5, 6...Two-pole terminal, 7...Terminal for ground connection, 10...
Insulating cap body.

Claims (1)

[Scope of utility model registration request] A pair of electrical connection insert blades are provided on one side of the insulating base, and a pair of electrical connection insert blades that are continuous with or electrically connected to the pair of electrical connection insert blades are provided on the opposite side of the insulating base. A plug including a connection plug and a ground connection plug, each row of plugs being removable from the plug and formed in a direction opposite to the plug. An insertion plug equipped with a two-pole terminal and a three-pole terminal, characterized in that the cap body is selectively insulated.