JPH08236189A - Power plug - Google Patents

Abstract

PURPOSE: To prevent the adhesion of dust, etc., to a contact terminal member and the occurrence of backlash of a power plug by forming a gap filling part consisting of insulating material, at the base section of the contact terminal member projecting from a plug body. CONSTITUTION: Gap filling parts 6A and 6B are made at the bump face 3A on the side of being plugged into a power outlet 2 of plug body 3. When a power plug 1 is plugged in the power plug connection ports 9A and 9B of the outlet 2, the filling parts 6A and 6B are filled into the gaps 10A and 10B generated between the peripheral walls of the connector terminals 4A and 4B and the inwalls of the connection ports 9A and 9B. Hereby, the short circuit caused by the adhesion of dust to members 4A and 4B can be prevented, and also the members 4A and 4B are connected firmly to the connection ports 9A and 9B.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power plug which is plugged into a power outlet to supply electric power to electric equipment.

[0002]

2. Description of the Related Art For electrical equipment such as electric appliances and office automation equipment,
It has a power plug that plugs into a power outlet. The power plug 101 is shown in FIGS.
As shown in 0, the plug main body 103, a pair of connection terminal members 104A and 104B inserted into the power plug connection port 106 of the power outlet 102, and a power cord 105 connected to an electric device are provided.

The plug body 103 is made of an insulating material having an insulating property, such as plastic or synthetic rubber, and is formed into a substantially rectangular shape. The connection terminal members 104 </ b> A and 104 </ b> B are formed of a slightly elongated metal plate, the base end side is supported inside the plug body 103, and the tip end portion is attached to the plug body 103 in a state of protruding from the plug body 103. . The tip ends of the connection terminal members 104A and 104B are inserted into the power outlet 102.

The power cord 105 has a plug body 1 at one end.
03 is attached inside the plug body 103 from the other side surface 103B that faces the abutting surface 103A on which the connection terminal members 104A and 104B are provided, and the other end is connected to an electric device such as an electric appliance (not shown).

The power plug 101 configured as described above
When the connection terminal members 104A and 104B are inserted into the pair of power plug connection ports 106A and 106B of the power outlet 102, electric power is supplied to electric equipment such as an electric appliance to which the power cord 105 is connected.

[0006]

By the way, in the above-mentioned conventional power plug 101, the connection terminal member 104 is used.
In order to allow the plugs A and 104B to be inserted into the power plug connection ports 106A and 106B of the power outlet 102, the outer dimensions are slightly smaller than the internal dimensions of the power plug connection ports 106A and 106B. Therefore, when the power plug 101 is inserted into the power outlet 102, gaps 107A and 107B are formed between the outer peripheral walls of the connection terminal members 104A and 104B and the inner peripheral wall of the power plug connection port 106A of the power outlet 102. Power plug 1
In No. 01, dust or the like may adhere to the gaps 107A and 107B, causing a problem such as a short circuit.

In addition, since the power plug 101 has gaps 107A and 107B between the outer peripheral walls of the connection terminal members 104A and 104B and the inner peripheral walls of the power plug connection ports 106A and 106B of the power outlet 102, rattling occurs. It is likely to occur, and the plug body 103 is inclined with respect to the power outlet so that the plug body 103 is easily removed from the power plug connection ports 106A and 106B. Therefore, the conventional power plug 101
Then, when the user accidentally hooks his / her foot on the power cord 105, the power cord is easily disconnected from the power outlet 102. Especially, in the case of an OA device or the like which always needs to supply electric power, the internal data is cut off by cutting off the electric power. There is a problem such as damage.

Therefore, according to the present invention, a gap is not substantially formed between the outer peripheral wall of the connection terminal member and the inner peripheral wall of the power plug connection port of the power outlet to prevent the occurrence of a short circuit, and The purpose is to provide a power plug that is firmly connected to a power outlet.

[0009]

SUMMARY OF THE INVENTION A power plug according to the present invention, which achieves this object, comprises a plug body formed of an insulating material, and a pair of connection terminal members whose base ends are supported inside the plug body. And the connection terminal member is provided at the root of the portion projecting from the plug body, and the connection terminal member is inserted into the power plug connection port of the power outlet, the outer peripheral wall of these connection terminal members is connected to the power plug. And a gap filling means formed of an insulating material that fills a gap formed between the inner peripheral wall of the mouth and the inner peripheral wall of the mouth.

Further, the power supply plug according to the present invention is constructed such that the gap filling means is formed integrally with the plug body so as to project therefrom.

Further, in the power plug according to the present invention, the gap filling means is formed in a tubular shape with a connection terminal insertion hole through which the connection terminal member is inserted, and is detachably attached to the connection terminal member. Consists of

[0012]

With the power plug according to the present invention having the above-described structure, when the connection terminal member is inserted into the power plug connection port of the power outlet, the outer peripheral walls of these connection terminal members are connected to the power plug of the power outlet. A gap filling means is filled in the gap formed between the inner peripheral wall of the mouth and the inner peripheral wall. The gap filling means prevents dust and the like from adhering between the connection terminal member and the power plug connection port, and also prevents rattling.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described in detail below with reference to the drawings.

A power plug 1 shown as a first embodiment of the present invention includes a plug body 3 and a plug body 3 as shown in FIGS.
It is provided with a pair of connection terminal members 4A and 4B to be inserted into the power plug connection ports 9A and 9B of the power outlet 2 and a power cord 5 connected to an electric device.

The plug body 3 has a rectangular outer shape made of an insulating material having an insulating property such as plastic and synthetic rubber. The plug body 3 has a pair of gap filling portions 6A and 6B on the abutting surface 3A on the side to be inserted into the power outlet 2.
Are formed integrally with each other.

The gap filling portions 6A and 6B are formed in a rectangular tube shape, and the external dimensions are the power plug connection port 9 of the power outlet 2.
It is formed to have a size substantially equal to the internal dimensions of A and 9B. Further, the connection terminal member 4 is provided in the gap filling portions 6A and 6B.
Connection terminal insertion holes 7A and 7B having internal dimensions substantially equal to the external dimensions of A and 4B are provided. Further, chamfered portions 8A and 8B are formed at the tips of the gap filling portions 6A and 6B, respectively.

The connection terminal members 4A and 4B are formed of a metal plate, the base end side is supported inside the plug body 3, and the tip end portion on the side to be inserted into the power outlet 2 is the plug body 3.
It is attached to the plug body 3 so as to project from the connection terminal insertion holes 7A and 7B. Therefore, in the connection terminal members 4 </ b> A and 4 </ b> B, the outer peripheral wall of the root portion of the portion protruding from the plug body 3 has the gap filling portion 6 of the plug body 3.
It is covered by the inner peripheral walls of A and 6B.

The power cord 5 has one end attached to the inside of the plug body 3 from the other side surface 3B facing the abutting surface 3A on which the connection terminal members 4A and 4B of the plug body 3 are provided, and the other end of an electric appliance or the like not shown. It is connected to electrical equipment.

In the power plug 1 of the first embodiment constructed as described above, the connection terminal members 4A and 4B are inserted into the power plug connection ports 9A and 9B of the power outlet 2. In the power plug 1, the chamfered portions 8A and 8B are the power outlets 2
Hit the inner peripheral wall of the power plug connection ports 9A, 9B of
The gap filling portions 6A and 6B are easily inserted from the power plug connection ports 9A and 9B.

The power plug 1 has connection terminal members 4A, 4B of the power plug 1 when the gap filling portions 6A, 6B are inserted into the power plug connection ports 9A, 9B of the power outlet 2.
Outer peripheral wall and the power plug connection port 9A of the power outlet 2
The gap filling portions 6A and 6B are filled in the gaps 10A and 10B generated between the inner circumferential wall 9B and the inner peripheral wall of the inner wall 9B.

Therefore, the power plug 1 prevents dust and the like from entering the gaps 10A and 10B in the state of being plugged into the power outlet 2 and prevents rattling. Therefore, the power plug 1 is extremely safe, the connection state to the power outlet 2 is reliably maintained, and the power plug 1 does not easily come off from the power plug connection ports 9A and 9B. Therefore, the power plug 1 reliably supplies electric power to an electric device such as an electric appliance to which one end of the power cord 5 is connected.

In the power plug 1 of the first embodiment constructed as described above, when the connection terminal members 4A and 4B are inserted into the power plug connection ports 9A and 9B of the power outlet 2, the gap filling portion 6A is inserted. , 6B for connecting terminal member 4
Since the gaps 10A and 10B are not formed between the outer peripheral walls of A and 4B and the inner peripheral walls of the power plug connection ports 9A and 9B, a short circuit is prevented and the connection terminal member 4 is formed.
A and 4B are firmly connected to the power plug connection ports 9A and 9B.

The power plug 1 has a gap filling portion 6A,
Since the chamfered portions 8A and 8B are formed on 6B, respectively, the power plug connection ports 9A and 9B of the power outlet 2 are formed.
Can be easily plugged into.

FIGS. 4 to 7 show a second embodiment of the power plug according to the present invention. This second embodiment power plug 2
1 has the same basic structure as that of the first embodiment described above, except that the gap filling portions 6A and 6B are replaced by the gap filling cap 2
It is characterized in that 3A and 23B are attached to the plug body 22.

The first gap-filling cap 23A is formed in a rectangular tube shape, and has an outer size substantially equal to the inner size of the power plug connection port 9A of the power outlet 2. Further, the first gap filling cap 23A is provided with a connection terminal insertion hole 24A having an inner size substantially equal to the outer size of the connection terminal member 4A. Further, a chamfered portion 25A is formed on the first gap filling cap 23A.

Further, the second gap filling cap 23B is
It is formed in the same shape as the first gap filling cap 23A.

In the power source plug 21 of the second embodiment constructed as described above, the connection terminal insertion holes 24A and 24B of the gap filling caps 23A and 23B are connected to the connection terminal members 4A and 4B.
And is attached to the abutting surface 22A of the plug body 22 through the respective tip sides.

The power plug 21 includes the connection terminal members 4A and 4A.
B is inserted into the power plug connection ports 9A and 9B of the power outlet 2. The power plug 21 has chamfered portions 25A and 2A.
5B is a power plug connection port 9A, 9B of the power outlet 2.
Collide with the inner peripheral wall of the gap filling cap 23A, 23A
B is easily inserted from the power plug connection ports 9A and 9B.

The power plug 21 has a gap filling cap 23.
A and 23B are power plug connection ports 9 of the power outlet 2.
A gap 10 formed between the outer peripheral walls of the connection terminal members 4A and 4B of the power plug 21 and the inner peripheral walls of the power plug connection ports 9A and 9B of the power outlet 2 when inserted into the power plugs A and 9B.
A and 10B are filled with the gap filling caps 23A and 23B.

Therefore, the power plug 21 prevents dust and the like from entering the gaps 10A and 10B in the state of being plugged into the power outlet 2 and prevents rattling. Therefore, the power plug 21 is extremely safe, the connection state to the power outlet 2 is reliably maintained, and the power plug 21 does not easily come off from the power plug connection ports 9A and 9B. Therefore, the power plug 21
Reliably supplies electric power to electric equipment such as electric appliances to which one end of the power cord 5 is connected.

In the power plug 21 of the second embodiment constructed as described above, when the connection terminal members 4A and 4B are inserted into the power plug connection ports 9A and 9B of the power outlet 2, the gap filling cap 23A is formed. , 23B and the outer peripheral wall of the connection terminal members 4A, 4B and the power plug connection port 9
Since the gaps 10A and 10B are not formed between the inner peripheral walls of A and 9B, the occurrence of short circuit is prevented, and the connection terminal members 4A and 4B are firmly connected to the power plug connection ports 9A and 9B.

The power plug 21 has chamfered portions 25A and 25B on the gap filling caps 23A and 23B, respectively.
Since it is formed, it can be easily inserted into the power plug connection ports 9A and 9B of the power outlet 2.

Further, in the power plug 21, the gap filling caps 23A, 23B are provided separately from the plug body 22, so that the gap filling caps 23A, 23B can be attached and detached. Therefore, the gap filling cap 23A,
The outer dimension of 23B is the gap filling caps 23A and 23B.
It is possible to correspond to other connection terminal members having substantially the same internal dimension as.

The power plug 21 of the second embodiment has two gap filling caps 23A and 23B and two connecting terminal members 4
It is formed so as to correspond to each of A and 4B, but it is also possible to form the gap filling cap in which two connection terminal insertion holes are formed corresponding to two connection terminal members, from one insulating material. It is possible.

The power plug 1 of the first embodiment described above
And the second embodiment power plug 21 are both AC / D
It may be applied to a power plug provided with a connection terminal member such as a C adapter.

[0036]

As described above in detail, according to the power plug of the present invention, the connection terminal member is provided with the gap filling means at the root portion of the portion of the connection terminal member protruding from the plug body. When the plug is inserted into the power plug connection port of the power outlet, the gap between the outer peripheral wall of the connection terminal member and the inner peripheral wall of the power plug connection port is filled with the gap filling means, so that the connection terminal member is dusted or the like. Is prevented from being attached and the short circuit is prevented, and the connection terminal member is firmly connected to the power plug connection port.

[Brief description of drawings]

FIG. 1 is a perspective view showing a power plug of a first embodiment according to the present invention.

FIG. 2 is a front view showing the power plug.

FIG. 3 is a longitudinal sectional view of an essential part showing a state in which the power plug is inserted into a power outlet.

FIG. 4 is a perspective view showing a power plug of a second embodiment according to the present invention.

FIG. 5 is a front view showing a gap filling cap forming the power plug.

FIG. 6 is a vertical cross-sectional view showing a gap filling cap that constitutes the power plug.

FIG. 7 is a longitudinal sectional view of an essential part showing a state in which the power plug is inserted into a power outlet.

FIG. 8 is a perspective view showing a conventional power plug.

FIG. 9 is a front view showing a conventional power plug.

FIG. 10 is a perspective view showing a state in which a conventional power plug is inserted into a power outlet.

[Explanation of symbols]

 1 power plug 3 plug body 4A, 4B connection terminal member 5 power outlet 6A, 6B gap filling means

Claims (3)

[Claims] 1. A plug body formed of an insulating material, a pair of connection terminal members whose base ends are supported inside the plug body, and a root portion of a portion of these connection terminal members protruding from the plug body. And a gap filling means formed of an insulating material. The gap filling means is provided with the outer peripheral wall of the connection terminal member and the power plug when the connection terminal member is inserted into the power plug connection port of the power outlet. A power plug characterized by being filled in a gap formed between the inner peripheral wall of the connection port and the inner wall. 2. The power plug according to claim 1, wherein the gap filling means is integrally formed on the plug body so as to project therefrom. 3. The gap filling means is formed in a tubular shape having a connection terminal insertion hole through which the connection terminal member is inserted, and is provided detachably with respect to the connection terminal member. The power plug shown.