WO2011055924A2

WO2011055924A2 - Power connector

Info

Publication number: WO2011055924A2
Application number: PCT/KR2010/007330
Authority: WO
Inventors: 이재진
Original assignee: Lee Jae-Jin
Priority date: 2009-11-05
Filing date: 2010-10-25
Publication date: 2011-05-12
Also published as: WO2011055924A3

Abstract

The present invention relates to a power connector which can disconnect an electrically operated device from a power supply even without completely separating a plug from a socket, thereby preventing the waste of stand-by power. The power connector comprises a socket and a plug. The socket includes a lower body having a plurality of connection terminals for transmitting power from a main power supply, and an upper body connected to the lower body and having a mounting groove including a plurality of connection holes aligned with the connection terminals, wherein a safety pin is arranged beneath the mounting groove, the safety pin having a blade covering the connection holes. The plug has a plurality of connection rods which pass through the connection holes to receive electric current from the connection terminals of the socket, such that the plug supplies power to the electrically operated device. One side of the surface of the blade of the safety pin is circularly recessed, and each of the connection rods has a groove portion, such that the recessed surface of the blade of the safety pin gets caught by the groove portion of the connection rod when the plug is separated from the socket and thus the plug and the socket can be electrically insulated from each other.

Description

Power connector

The present invention relates to a power connection mechanism, and more particularly, to a power connection mechanism for preventing the waste of standby power by shutting off the power source without completely removing the plug from the outlet.

Generally, the power connection mechanism consists of a combination of an outlet and a plug.

Outlets are used to connect plugs of various electronics to indoor wiring of electricity.

Such outlets can be classified into recessed and exposed type according to the installation location, and classified into 100V and 220V depending on the voltage used.

Such an outlet includes a connection hole for inserting the connection rod of the plug, and electricity is supplied by connecting the connection rod passing through the connection hole to the power supply terminal under the outlet.

On the other hand, by performing the above connection process in reverse, the power is cut off by removing the connecting rod of the plug from the connection hole of the outlet.

At this time, the plug detached from the outlet is placed on the bottom of the outlet unorganized to damage the aesthetics, the plug is detached outlet is exposed to the outside there is a risk of electric shock.

In addition, when the plug is not disconnected from the outlet when the electric appliance is not used, the plug is continuously connected to the power supply terminal of the outlet, thereby increasing the standby power.

The present invention is to solve the conventional problems, and to provide a power connection mechanism for preventing the waste of standby power by cutting off the power supply without completely removing the plug from the outlet.

A first embodiment of a power connection mechanism for achieving the object of the present invention, a lower body including a plurality of connection terminals for transmitting power from the main power source and a plurality of connections connected to the lower body, and aligned with the connection terminal A seating groove including a ball is formed, an outlet including an upper body formed with a safety pin having a wing covering the connection hole to the bottom of the seating groove, and a plurality of connection rods passing through the connection hole to conduct electricity with the connection terminal. And a plug for supplying the electric power to the electric appliance, and a wing of the safety pin has a recess recessed at one side of a surface thereof, and each of the connecting rods includes a recess in which the recess is recessed. The plug and the outlet are insulated by the engagement with the recessed surface.

The plug of the present invention includes the connecting rod which is connected to the electric wire of the electric appliance and protrudes from the bottom surface of the plug, wherein the connecting rod is long in the longitudinal direction between the bottom surface of the plug and the recess. A cylindrical columnar portion is formed, and a conical inclined portion is formed below the concave portion.

The plug of the present invention is characterized in that it further comprises a display unit for displaying the energized state and the disconnected state of the plug.

The display unit of the present invention is characterized by being displayed as a line on the surface of the plug.

In the present invention, the upper body of the outlet is formed with a recessed recess, the fixing member for enclosing a predetermined area of the inner surface of the seating groove, the fixing member is located in the predetermined region partitioned And a safety pin including a connection hole, the wing covering the connection hole at both ends and crossing the predetermined area, and a projection protruding in a vertical direction, and an elastic member coupled to the projection to rotate the safety pin. It is done.

In the present invention, the upper body of the outlet is characterized in that it further comprises a plurality of support members for supporting the connecting rod extending from the fixing member and passed through the connection hole.

In the present invention, the connection terminal of the lower body includes two metal plates in contact with the connecting rods passing through the connection hole, the two metal plates are characterized in that formed vertically from the lower body.

In the present invention, the connection terminal of the outlet is characterized in that the two metal plates in contact with the connecting rod is inclined so as to be in close contact with the inclined portion of the connecting rod.

A second embodiment of the power connection mechanism for achieving the object of the present invention, the lower main body is provided with a plurality of connection terminals for transmitting electric power from the main power supply, and includes a safety pin having a wing covering the connection terminal, and the lower main body A outlet connected to the outlet, the seating groove including a plurality of connection holes aligned with the connection terminal, the outlet including an upper body having at least two hooking holes formed on an inner circumferential surface of the seating groove; And a plug having a plurality of connecting rods passing through the connecting holes and energizing the connecting terminals, and having at least two locking wings protruding from the outer circumferential surface to be inserted into the locking holes. It features.

In the present invention, the locking blade of the plug is characterized in that it is formed to protrude in a "<" shape on both sides of the outer peripheral surface circumference.

The display portion of the present invention is characterized by a line displayed on the surface of the plug.

In the present invention, the earth portion is formed to be recessed on both sides facing the locking wing of the plug, the earth portion is characterized in that the insulating portion is further formed so that the metal piece is not exposed to the outside in a blocked state.

In the present invention, the safety pin is formed in the longitudinal direction passing through the center of a predetermined region, the wings are formed at both ends, the wing is formed in a circular shape formed inclined toward the upper one side, covering the connection terminal, the connection of the plug It is characterized by supporting the rod.

According to the present invention, it is possible to easily and conveniently insulate the plug from the outlet to reduce the standby power, it is easy to store the plug by insulating the plug in a state coupled with the outlet.

1 is a block diagram showing a plug according to a first embodiment of the present invention.

2 is a block diagram showing an outlet connected to the plug of FIG.

3 is a cross-sectional view of the plug connected to the outlet.

4 is a cross-sectional view of the standby state of the power connection mechanism according to the first embodiment of the present invention.

5 is a detailed view of the safety pin of the electrical connector according to the first embodiment of the present invention.

6 is a cross-sectional view of a power connection mechanism according to another embodiment of the first embodiment of the present invention.

7 is an exploded perspective view of a power connection mechanism according to a second embodiment of the present invention.

8 is a cross-sectional view showing a state before plugging the plug of FIG.

9 is a cross-sectional view showing a state where the plug of FIG. 8 is plugged into an outlet.

10 is a cross-sectional view illustrating a state in which power is cut off by partially pulling out the plug of FIG. 9;

(First embodiment)

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise.

Power connection mechanism of the first embodiment according to the present invention is composed of the plug 100 and the outlet 200 for applying power to the plug 100 of the electrical appliance, the outlet 200 and the plug 100 is not completely separated Without insulation.

Hereinafter, a power connection mechanism according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 3.

Referring to FIG. 1, the plug 100 is connected to an electric wire 110 connected to an electric device (not shown), has a predetermined volume to be easily gripped by a user, and has a smooth curved surface.

Such a plug 100 is made of an insulator material, such as plastic.

A flat bottom surface 120 is formed on the opposite side of the wire 110, and two connection rods 130 are formed on the bottom surface 120.

The two connecting rods 130 protrude from the bottom surface 120 and are spaced apart from each other by a predetermined distance, and each of the connecting rods 130 has the same shape as each other and is made of an electrically conductive metal material.

The connecting rod 100 has a cylindrical shape having a predetermined length, and an end portion of the connecting rod 130 is an area in contact with the connecting terminal 410 of the outlet 200, and a recess 132 is formed in the contact area. ) And the inclined portion 134.

That is, each of the connecting rods 130 protrudes from the bottom surface 120, extends in a cylindrical shape, and is formed with recesses 132 recessed inward, and the diameter of the cross section is reduced beyond the recesses 132. An inclined portion 134 having a conical shape is formed.

At this time, the inclined portion 134 has a length of about twice the length of the recess 132, and is in contact with the connection terminal 410 of the outlet 200 to a predetermined depth of the cylindrical shape over the recess 132. The contact area may be similar to the recess 132.

For example, when the height of the connection terminal 410 of the outlet 200 is 8mm, the inclined portion 134 is 4mm, the recessed portion 132 is 2mm, the remaining 2mm may be in contact with the cylindrical end portion. have.

On the other hand, the inclined portion 134 may be formed to extend to the depth in contact with the connection terminal 410 of the outlet 200, that is, the inclined portion 134 is formed above and below the concave portion 132 For example, the inclined portion 134 may be formed below the recess 132 by 4 mm, the recessed portion 132 by 2 mm, and the recessed portion 132 by 2 mm.

When the inclined portion 134 is formed above and below the concave portion 132, the transition from the energized state to the standby state can proceed quickly, thereby further reducing standby power.

The surface of the plug 100 is provided with a display unit 140 for discriminating the energized state and the insulated state from the outside.

The display unit 140 is shown as a line as shown in Figure 1 can not be observed from the outside in the energized state, may have a configuration that is observed from the outside in the insulated state, the bottom surface 120 and the wire 110 It may be a configuration having different colors on the side.

FIG. 2 is a view of the shape in which the plug 100 and the outlet 200 of FIG. 1 are combined from the inside of the upper body 300 of the outlet 200.

2 and 3, the outlet 200 is formed of the upper body 300 and the lower body 400, the upper upper body 300 has a seating groove 310, the plug 100 is seated It is formed to be recessed, the fixing member 320, the connection hole 312 and the support member 322 is formed on the bottom of the mounting groove (310).

The fixing member 320 has a predetermined height and is formed to surround a predetermined area of the bottom of the mounting groove 310 to partition the bottom surface of the mounting groove 310.

In this case, the connection hole 312 and the support member 322 are formed in a predetermined region of the fixing member 320.

Two connection holes 312 are formed at both ends of the fixing member 320 region, and the connecting rods 130 of the plug 100 pass through each connection hole 312 as shown in FIG. 2. .

At this time, the support member 322 is formed to protrude from the fixing member 320 has a predetermined height so that the connecting rod 130 passed through the connection hole 312 can be supported.

The two supporting members 322 are formed while supporting the top and bottom of the connecting rods 130 so that the two connecting rods 130 passed through are supported in different directions.

On the other hand, the safety pin 330 is formed across the predetermined area in the fixing member 320.

The safety pin 330 is formed in the longitudinal direction passing through the center 332 of the predetermined region, the wings 334 are formed at both ends of the longitudinal direction, the protrusion 336 protruding perpendicular to the middle region Is formed.

An end of the protrusion 336 of the safety pin 330 is formed with a spring-like elastic member 338, the elastic member 338 is supported by a region surrounded by the fixing member 320 and the support member 322. .

When the plug 100 and the outlet 200 are completely separated from the safety pin 330, the wing 334 of the safety pin 330 covers the connection hole 312, and thus, the outlet 200 from the outside of the outlet 200 is formed. The exposure of the connection terminal 410 of the lower body 400 is blocked.

At this time, when the pressure is applied to the connecting rod 130 from the outside to pass through the connecting rod 130 through the connection hole 312, while the safety pin 330 is rotated in the clockwise direction by the elastic member 338 connection hole 312 It exposes and passes through the connecting rod (130).

Meanwhile, referring to FIG. 3, the lower main body 400 of the outlet 200 is assembled with the upper main body 300 and includes a connection terminal 410 therein.

The connection terminal 410 is formed to be aligned with the position of the connection hole 312 of the upper body 300, and transfers power from the main power source.

The connection terminal 410 may be formed of a conductive metal, for example, an alloy such as phosphor bronze.

The connection terminal 410 may be a vertical metal plate that is in contact with both sides of the connecting rod 130, the two connection terminals 140 are supported by the support member 420 protruding from the lower body 400. .

As described above, the connecting rod 130 of the plug 100 is pushed to pass through the coupling hole 312 of the outlet 200, so that the safety pin 330 rotates in a clockwise direction to the lower body 400 of the outlet 200. In contact with the connection terminal 410 is formed to supply power to the electrical device connected to the plug 100.

Hereinafter, the standby state of the power connection mechanism of the present invention will be described with reference to FIGS. 4 and 5.

Referring to FIG. 4, when the power connection mechanism is in the standby state, the plug 100 is not completely disconnected from the outlet 200 and is pulled out, and the connecting rod 130 of the plug 100 is connected to the outlet 200. Is disconnected from the connection terminal 410 of the insulated state.

At this time, the recess 132 of the connecting rod 130 is engaged with the wing 334 of the safety pin 330 to support the plug 100 is not separated to the outside.

Therefore, the insulation of the plug 100 is not completely disconnected from the outlet 200, so that no aesthetic damage caused by the separated plug 100 is maintained, and thus the standby power is reduced.

At this time, the safety pin 330 is formed so that the contact portion of the connecting rod 130 of the plug 100 is inclined, the wing 334 of the safety pin 330 has a circular shape, the cross section is a triangle, for example It is inclined to form a right triangle, and the diameter surface which the side surface of the connecting rod 130 touches is recessed circularly.

Therefore, the connecting rod 130 may slide smoothly along the inclined surface and pass through the coupling hole 312, and when the connecting rod 130 is pulled out from the standby state, the thin bottom surface of the safety pin 330 is connected to the connecting rod 130. It is connected to the recess 132 of the 130 to prevent the plug 100 is completely separated from the outlet 200.

Hereinafter, a power connection mechanism according to another embodiment of the first embodiment of the present invention will be described with reference to FIG. 6.

The power connection mechanism of FIG. 6 has the same configuration as the power connection mechanism of FIG. 3. Specifically, the connecting rod 130 of the plug 100 includes a recess 132 and an inclined portion 134. Safety pin 330 of 200 includes a wing 334 is formed with an inclined surface as shown in FIG.

The power connection mechanism includes an inclined surface such that the connection terminal 410 is in close contact with the inclined portion 134 of the connecting rod 130 in the lower body 400 of the outlet 200.

6, when the connection terminal 410 includes an inclined surface inclined along the inclined portion 134 of the connecting rod 130, when the power is connected, the connection terminal 410 is in close contact with the inclined portion 134 of the connecting rod 130. The loss can be reduced.

(Second embodiment)

As shown in the figure, the second embodiment of the present invention comprises a plug 100A and an outlet 200A for applying power to the plug 100A of an electric appliance, and the outlet 200A and the plug 100A are connected to each other. It is possible to cut off the power without disconnecting it completely.

Referring to FIG. 7, the plug 100A includes a wire 110A, a locking blade 120A, an earth portion 130A, a display portion 140A, a bottom surface 150A, and a connecting rod 160A. .

The outlet 200A includes a seating groove 310A, an engaging body 312A, and an upper body 300A having a connection hole 314A and a lower body 400A formed of a connection terminal 410A and a safety pin 420A. It is included and formed.

The locking blade 120A of the plug 100A is formed to protrude in a "<" shape having elasticity on both sides of the outer circumference.

The earth portion 130A of the plug 100A is a metal piece 132A for contacting the earth terminal (unsigned) formed in the outlet 200A and the metal piece 132A exposed to the outside when the power supply of the plug 100A is cut off. Insulator 134A is insulated.

The insulation portion 134A is formed by a separate coating or injection molding for insulation.

A display portion 140A is formed on the surface of the plug 100A to allow discrimination of the energized state and the blocked state from the outside.

The display unit 140A may be displayed as a line as shown in FIG. 7 and may not be observed from the outside when in the energized state, and may be observed from the outside when in the cutoff state. ) May have a different color.

In addition, the plug 100A is connected to an electric wire 110A connected to an electric device (not shown), has a predetermined volume to be easily gripped by a user, has a smooth curved surface, and an insulator such as plastic. It consists of a substance.

The connecting rods 160A protrude from the bottom surface 150A and are spaced apart from each other by a predetermined distance, and each connecting rod 160A has the same shape as each other and is made of a conductive material of an electrically conductive metal. ) End is in contact with the connection terminal 410A formed in the lower body 400A of the outlet 200A.

And, the upper body 300A of the outlet 200A is formed such that at least one seating groove 310A into which the plug 100A is inserted is recessed downward, and engaging holes on both sides of the inner circumferential surface of the seating groove 310A. 312A is formed in a rectangular shape, and connection holes 314A corresponding to the connection rods 160A of the plug 100A are formed.

In addition, the lower main body 400A of the outlet has at least two connection terminals 410A which are aligned with the connection holes 314A of the upper main body 300A, and a safety pin for covering the connection terminals 410A ( 420A) is formed.

The safety pin 420A is formed in the longitudinal direction passing through the center 422A of a predetermined region, and wings 424A are formed at both ends of the longitudinal direction so that the wings 424A covers the connection terminal 410A. .

The wing 424A has a circular shape having the same size to cover the connection terminal 410, the upper portion is configured to be inclined to one side, the safety pin (420A) is pushed to the connecting rod 160A to the center 422A It is formed so that it can be rotated in one direction.

The safety pin 420A is formed to be returnable by a normal elastic spring (not shown), and the configuration and operation relationship of the protrusion 336 and the elastic member 338 described in the first embodiment according to the present invention are very similar. Since this is a simple description thereof will be omitted. However, the elastic spring is elastic enough to prevent the safety pin 420A from rotating due to the weight of the plug 100A.

In addition, the connection terminal 410A is formed to be aligned with the position of the connection hole 314A of the upper body 300A, and transfers power from the main power source.

The connection terminal 420A may be formed of a conductive metal, for example, an alloy such as phosphor bronze.

The connection terminal 420A may be a vertical metal plate contacting both sides of the connection rod 160A, and two connection terminals 410A are supported by the support member 430A protruding from the lower body 400A. .

The coupling relationship and the operation relationship between the plug 100A and the outlet 200A according to the second embodiment of the present invention configured as described above are described in detail.

As shown in FIG. 8, when the plug 100A of the present invention plugs the plug 100A into the seating groove 310A of the upper body 300A of the outlet 200A, the plug 100A is used to energize the electric appliance. The connecting rod 160A is aligned with the connecting hole 314A.

At this time, the engaging blade (120A) formed in the plug (100A) is fitted into the engaging hole (312A) formed in the seating groove (310A), the lower end of the engaging blade (312A) formed a "<" shape of the seating groove (310A) ) As it descends along the upper inner surface and is extended by the elasticity of the locking blade 120A, the plug 100A is inserted into the seating groove 310A.

And, as shown in Figure 9 when the engaging blade (120A) is located in the engaging hole (312A) formed in the seating groove (310A) is returned to its original shape by the self-elasticity of the locking blade (120A) is a locking hole (312A) Will be guided along.

In addition, the safety pin 420A provided in the lower body 400A of the outlet 200A is rotated while being pushed to one side by the connecting rod 160A along the inclined surfaces of the wings 424A on both sides, so that the connection terminal 410A is opened. The connecting rod 160A of the plug 100A and the connecting terminal 410A are connected to each other to provide power to the electric appliance.

When the plug 100A is pulled out as shown in FIG. 10 to cut off the power after the use of the electric appliance to which power is applied as described above, the locking blade 120A of the plug 100A rises along the locking hole 312A. The upper portion of the locking blade (120A) is caught in the upper portion of the locking hole (312A) is a portion of the plug 100A is pulled out.

At this time, the connection rod 160A of the plug 100A connected to the connection terminal 410A of the lower body 400A of the outlet 200A is separated from the connection terminal 410A to cut off power, and the safety pin 420A is elastic. By the elasticity of the spring (not shown), the wing 424A covers the connection terminal 410A.

Therefore, the blade 424A of the safety pin 420A maintains the connection of the connecting rod 160A and the connecting terminal 410A in a blocked state, and supports the lower connecting rod 160A of the plug 100A. .

In addition, the display unit 140A formed on the plug 100A may visually identify whether the plug 100A is in an energized state or a blocked state.

In addition, since the metal piece 132A of the earth portion 130A formed on the plug 100A is not exposed by the insulating portion 134A, a safety accident such as an electric shock that may occur may be prevented in advance.

Of course, when the user wants to completely remove the plug 100A from the outlet 200A, the user may pull out the plug 100A more, and the catching blade 120A may be caught by the elasticity of the catching blade 120A. Since it is spread along the plug 100A can be removed from the outlet 200A as shown in FIG.

In the power connection mechanism of the present invention as described above, the locking blade of the plug is caught by the locking hole formed in the upper body of the outlet after the use of the electrical appliance to prevent the plug from being detached, and the connecting rod is connected to the wing of the safety pin in a state where the power is cut off. It is supported by the power supply to reduce the standby power generated by the plug connection.

What has been described above is only one embodiment for implementing the power connection mechanism of the present invention, the present invention is not limited to the above-described embodiment, the present invention without departing from the gist of the invention claimed in the claims below Anyone with ordinary knowledge in the field of the invention will have the technical spirit of the present invention to the extent that various modifications can be made.

Claims

In the power connection mechanism formed of a plug and an outlet for supplying power to an electric appliance driven by electricity,

A plurality of connection holes 312 connected to the lower main body 400 and the lower main body 400 including a plurality of connection terminals 410 transferring electric power from a main power source, and aligned with the connection terminal 410. An outlet 300 including a seating groove 310 including an upper body 300 having a safety pin 330 having a wing 334 covering the connection hole 310 to the bottom of the seating groove 310 is formed. Wow,

And a plug 100 for supplying the electric power to the electrical appliance is formed with a plurality of connecting rods 130 to pass through the connection hole 312, the electricity to the connection terminal 410,

The wing 334 of the safety pin 330 has one side of the surface recessed in a circular shape, each of the connecting rods 130 includes a recessed portion 132, the recessed portion 132 and the And a plug (100) and the outlet (200) are insulated by the engaging connection with the recessed surface of the wing (334) of the safety pin (330).
The method of claim 1,

The plug 100 is connected to the electric wire 110 of the electric appliance, includes the connecting rod 130 protruding from the bottom surface 120 of the plug 100, the connecting rod 130 The long cylindrical columnar portion in the longitudinal direction is formed between the bottom surface 120 and the concave portion 132 of the plug 100, the conical inclined portion 134 is formed below the concave portion 132 Characterized by a power connector.
The method of claim 1,

The plug 100 further comprises a display unit 140 for displaying the energized state and the disconnected state of the plug 100.
The method of claim 3, wherein

The display unit 140 is a power connection mechanism, characterized in that indicated by a line on the surface of the plug (100).
The method of claim 1,

The upper body 300 of the outlet 200, the seating groove 310 is formed to be recessed, the fixing member 320 for partitioning and surrounding a predetermined area of the inner surface of the seating groove 310, the fixing member The connection hole 312 positioned in the predetermined area defined by the 320, the wing 334 crossing the predetermined area and covering the connection hole 312 at both ends thereof, and the protrusions protruding in the vertical direction ( And a resilient member (338) coupled with the protrusion (336) to rotate the safety pin (330).
The method of claim 5,

The upper body 300 of the outlet 200 further includes a plurality of support members 322 extending from the fixing member 320 to support the connecting rods 130 passing through the connection holes 312. Power connector included.
The method of claim 1,

The connection terminal 410 of the lower main body 400 of the outlet 200 includes two metal plates in contact with the connection rod 130 passing through the connection hole 312, the two metal plates Power connection mechanism characterized in that formed vertically from the lower body (400).
The method of claim 5,

The connection terminal 410 of the outlet 200 is inclined so that two metal plates in contact with the connecting rod 130 are in close contact with the inclined portion 134 of the connecting rod 130. .
In the power connection mechanism formed of a plug and an outlet for supplying power to an electric appliance driven by electricity,

A lower body 400A including a plurality of connection terminals 410A for transmitting electric power from a main power source, including a safety pin 420A having wings 424A covering the connection terminals 410A, and the lower body 400A. And a seating groove 310A including a plurality of connection holes 314A aligned with the connection terminal 410A, and having at least two hooking holes 312A on an inner circumferential surface of the seating groove 310A. An outlet 200 including the formed upper body 300;

A plurality of connecting rods 160A are formed to pass through the connection hole 312A and are electrically connected to the connection terminal 410A, and a locking wing 320A having elasticity for being inserted into the locking hole 312A around an outer circumferential surface thereof. And a plug (100A) protruding at least two or more).
The method of claim 9,

Hanging blade (120A) of the plug (100A), the power connection mechanism characterized in that formed to protrude in a "<" shape on both sides of the outer peripheral surface.
The method of claim 9,

The earth portion 130A is formed to be recessed on both sides of the plug 100A opposite the engaging blade 120A, and the earth portion 130A is an insulating portion for preventing the metal piece 132A from being exposed to the outside in a blocked state. 134A is further formed.
The method of claim 9,

The plug (100A) is a power connection mechanism characterized in that it further comprises a display unit (140A) for displaying the energized state and the disconnected state of the plug (100A).
The method of claim 12,

And the display portion (140A) is indicated by a line on the surface of the plug (100A).
The method of claim 9,

The safety pin 420A is formed in the longitudinal direction past the center 422A of a predetermined region, and wings 424A are formed at both ends, and the wings 424A are circularly formed to be inclined toward one side of the connection terminal ( Covering 410A, and the power supply connection mechanism characterized in that to support the connection rod (160A) of the plug (100A).