KR20070027421A - Electric power supply structure - Google Patents

Abstract

A power supply connecting structure is provided to easily connect a power jack to a connector and easily separate the power jack from the connector by forming at least one of components of the connector using a magnetic material. A power supply connecting structure includes a first connector(110) and a second connector(120). The first connector includes a first central terminal(111), a first insulator(112) enveloping the first central terminal, and a first outer terminal(113) surrounding the first insulator. The second connector includes a second central terminal(121) connected and separated to and from the first central terminal of the first connector, a second insulator(122) enveloping the second central terminal, and a second outer terminal(123) surrounding the second insulator. At least one of the first central terminal, the first outer terminal of the first connector, the second central terminal and the second outer terminal of the second connector is formed of a magnetic substance.

Description

Electric power supply structure

1 is a cross-sectional view showing a power connection structure of a conventional rod for permanent.

Figure 2a is a cross-sectional view showing a power connection structure according to an embodiment of the present invention, Figure 2b is an enlarged cross-sectional view of the main portion of Figure 2a, Figure 2c is an enlarged cross-sectional view of the main portion.

3A and 3B are top plan views of the main part of FIG. 2A.

4A is a cross-sectional view illustrating a power connection structure according to another embodiment of the present invention, and FIG. 4B is a cross-sectional view of a coupling.

5A is a cross-sectional view illustrating a power connection structure according to another embodiment of the present invention, FIG. 5B is a plan view of a main part, and FIG. 5C is a combined cross-sectional view.

6 is a partially broken perspective view showing a power connection structure according to another embodiment of the present invention, Figure 6a is a state before the connection Figure 6b is a state diagram showing a connection state.

<Description of Symbols for Main Parts of Drawings>

100, 200, 300, 400; Power connection structure according to the present invention

110, 210, 310, 410; First connector 111, 211, 411; 1st center terminal

112, 212, 412; First insulators 113, 213, 413; First outer terminal

114; Cylindrical cover 115,116; wire

120, 220, 320, 420; Second connectors 121, 221, and 421; 2nd center terminal

122, 322, 422; Second insulators 123, 223, 423; 2nd outer terminal

125, 126, 215, 315, 316, 325, 326, 415, 416; wire

130; Lots 140, 340; Power jack

225; Space 226; spring

311; First terminal 312; Auxiliary terminal

313; First insulator 321; Terminal 2

427; Tapered face

φ ₁ ; Outer diameter φ ₂ of the first center terminal; Inner diameter of 2nd center terminal

π; An inclination angle L of each of the first and second outer terminals; Length of first center terminal

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power connection structure, and more particularly, to a power connection structure that simplifies a connection work between power jacks used in a device for supplying power by detachment, such as a permanent rod.

Most automated devices are powered by power sources. Smaller devices, such as permanent rods, typically do not have separate switches that connect / short their own power supply, so they have male and female jacks. It is operated to turn on / off the power by plugging in or unplugging).

By the way, the perm rod widely used to give a wave of hair when doing a perm is composed of a generally cylindrical body, but a plurality of protrusions that can be circumferentially elastic on both side ends of the body, respectively Formed.

When using such a rod, wrap a bundle of hair with a perm or cloth and wrap it around the outer periphery of the rod, and then fix the hair with a rubber band using both protrusions. Perm was done.

However, the general rod structure used in this way has a disadvantage in that it takes a long time because it only has a function of winding the hair, and the wave is not uniform and there is a problem in that it is difficult to produce a variety of waves.

Therefore, in recent years, a rod has been proposed that has a heater that generates heat by supplying power to the inside of the rod so that the perm and the dry may be simultaneously performed, thereby shortening the perm time and enabling the production of various waves.

The rod for perm forms a cylindrical shape is formed on both sides end of the rubber hooks, the heater is installed inside the heater is supplied by the power supply, the one end is connected to the heater, the +,-connection terminal is connected By being configured to be exposed to the outside when used in conjunction with the power supply jack connected to a separate perm and wire to the connection terminal.

1, there is shown a power connection structure 1 of a conventional permanent rod.

As shown, the power connection structure 1 of the rod for perm is a heater (2) coiled with a heater coil on a cylindrical support, and wraps the heater (2) in a substantially cylindrical shape from the outside and a plurality of projections at both ends The formed case 3 and the first connection terminal 5, the second connection terminal 6, and an insulator between the heater 3 and the wire 4 are installed on one side of the case 3. The first connector 8 formed with 7) and the cover 9 which fixes the first connector 8 to the inside of the case at the same time as the outside of the heater.

Here, the first connector 8 has a substantially cylindrical pipe shape, the first connection terminal 5 is formed on the innermost side, and the insulator 7 surrounds the outer circumference of the first connection terminal 5. The second connecting terminal 6 surrounds the outer circumference of the insulator 7 again. Of course, the first connecting terminal 5 and the second connecting terminal 7 are connected to the heater 2 through the wires 4, respectively.

On the other hand, the power jack 10 is the first connection terminal 11 formed in the form of a projection to supply power to the first connector 8, the first formed in a substantially cylindrical pipe shape outside the first connection terminal (5) It consists of a second connection port (14) consisting of an insulating cover (13) surrounding the second connection terminal (12), the second connection terminal 12, and a body (15) formed at the rear end of the second connection port (14). . Of course, the wire 16 is connected to the first connection terminal 11 and the second connection terminal 12 through the body 15.

With this structure, the first connection terminal 11 of the power jack 10 is conventionally coupled to the first connection terminal 5 of the rod, and the second connection terminal 12 of the power jack 10 is the rod. By being coupled to the second connection terminal 6 of the power supply, the power supply jack 10 is supplied to the heater 2 of the rod.

However, when performing a perm in a beauty salon, the hair 1 is provided with about 30 to about 40 rods as described above, and then the power jack 10 must be coupled to each rod 1.

However, in the conventional power connection structure 1, the user must align the first connection port 8 of the rod and the second connection port 14 of the power jack 10 one by one, and then pick up a certain force to be coupled to each other. Not only does it take a long time, but the connection work is also difficult and inconvenient. In addition, as the power connection operation is not easy as described above, the hair already wound during the connection operation between the rod 1 and the power jack 10 is often pulled out or matted.

And, in addition to the problems described above, the conventional rod has a disadvantage that the configuration is complicated and the number of parts is large, the manufacturing and assembly is not good and expensive.

The present invention is to overcome the above-mentioned conventional problems, an object of the present invention is to provide a power connection structure for convenient connection work therebetween as a power jack of a small electric appliance.

In order to achieve the above object, the power connection structure according to the present invention is provided with a first center terminal of a predetermined length, the first insulator is formed on the outer periphery of the first center terminal, the outside of the first insulator A first connector having a first outer terminal is provided at the periphery, and a second center terminal connectable to and detachable from the first center terminal of the first connector, and a second insulator is provided at the outer periphery of the second center terminal. And a second connector having a second outer terminal connected to and detachable from the first outer terminal at a peripheral edge of the second insulator, wherein the first center terminal, the first outer terminal, At least one of the second center terminal and the second outer terminal of the second connector may be a magnetic material.

In addition, a predetermined space is formed at the rear end of the first center terminal or the first outer terminal of the first connector, and both, and the first center terminal or the first space is formed at the predetermined space of the first insulator. Each of the first outer terminals or both of them are further provided with a spring that holds them forward, so that the first center terminal and / or the first terminal when the second center terminal and / or the second outer terminal are coupled to each other. As the outer terminal retracts, the spring can be compressed.

In addition, although not claimed, an electric wire may be connected to the first center terminal through the spring or through the spring.

In addition, at least one of the first outer terminal of the first connector and the second outer terminal of the second connector may be formed in a circular ring shape.

In addition, the first connector is further formed with an insulating cylindrical cover so that the second outer terminal of the second connector is coupled to the outer periphery of the first outer terminal, the cylindrical cover that the tip of the second connector is located when connected Magnetic material may be installed at the proximal end of the.

In addition, the first connector may be installed at one side of the rod case, and the first center terminal and the second outer terminal may be respectively connected to the heater mounted inside the rod case by an electric wire.

In addition, the power connection structure according to the present invention is provided with a pair of hollow first terminals, an auxiliary terminal is coupled to the inside of each of the first terminal, to achieve the above object, the pair of first As long as the first terminal is coupled to the first terminal having a first insulator formed on its outer circumference and the pair of first terminals provided at the first terminal so that the center terminals are spaced apart from each other by a predetermined distance from each other. A second connector having a pair of second terminals, and having a second insulator formed on an outer circumference thereof so that the pair of second terminals are spaced apart from each other by a predetermined distance; and an auxiliary terminal or a second terminal of the first connector At least one of the second terminals of the connector may be a magnetic material.

In addition, the first connector may be installed at one side of the rod case, and the first terminal may be connected to the heater mounted inside the rod case by a wire.

In addition, the second connector may be installed at one side of the power jack so as to be coupled to the first connector so as to energize power.

In addition, in order to achieve the above object, the power connection structure according to the present invention includes a first center terminal having a predetermined length, a first insulator is formed at the root side outer periphery of the first center terminal, and the first insulator The outer periphery of the first connector is provided with a first outer terminal, and the first center terminal of the first connector is inserted into the second center terminal which can be electrically connected, the outer periphery of the second center terminal A second insulator is formed, and the outer periphery of the second insulator includes a second connector provided with a second outer terminal connectable to and detachable from the first outer terminal, and includes a first outer terminal or a first outer terminal of the first connector. Either or both of the second outer terminals of the two connectors may be magnetic materials.

Further, the inner diameter φ ₂ of the second center terminal is slightly larger than the outer diameter φ _{1 of} the first center terminal, and the inclination angle π is applied to any one of the first outer terminal or the second outer terminal. A tapered surface of? Tan- ¹ ((? _2- ? ₁ ) / 2L} can be formed.

As described above, when the power connection structure according to the present invention is applied to a rod for a permanent, for example, by installing a magnetic material in at least one of the first connection port of the rod or the second connection port of the power jack, the power jack can be connected with a small force. It can be easily combined / detached.

Of course, the connection operation is easy as described above, it is also possible to prevent the phenomenon that the excessive force is applied to the hair that is already wound during the coupling operation of the rod and the power jack is pulled out or matted.

In addition, the power connection structure according to the present invention has the advantages of a simple internal configuration and a small number of parts, a low manufacturing cost, and easy assembly.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings such that those skilled in the art may easily implement the present invention.

Figure 2a is an exemplary view showing a power connection structure according to an embodiment of the present invention in which the basic structure of the present invention is applied to a perm rod, Figure 2b is an enlarged cross-sectional view of the main portion of Figure 2a, Figure 2c Is an enlarged cross-sectional view of the main portion.

3A and 3B, a plan view of the main part of FIG. 2A is shown.

In addition, although the state connected to the rod for permanents 130 is demonstrated for the convenience of description for example, it is clear that the application object of this invention is not limited to this.

As shown, the power connection structure 100 according to the present invention includes a first connector 110 and a second connector 120. The first connector 110 is installed on one side of the case 131 of the rod 130 for an electric device, and is connected to the heater 132 by wires 115 and 116, and the second connector 120 is Is installed on one side of the body 141 of the power jack 140, the wires (125, 126) are connected.

The first connector 110 includes a first center terminal 111, a first insulator 112, and a first outer terminal 113. The first center terminal 111 has a predetermined length, and the diameter of one end is slightly larger than the diameter of the other region. Of course, an electric wire 115 connected to the heater 132 is connected to an end of the first center terminal 111. The first insulator 112 substantially surrounds the first center terminal 111. However, the front end and the end of the first center terminal 111 are exposed to the outside of the first insulator 112. The first outer terminal 113 is formed in a substantially circular ring shape on the outer circumference of the first insulator 112. The first outer terminal 113 may be a conductor and a magnetic material. Of course, a wire 116 connected to the heater 132 is connected to the first outer terminal 113. In addition, an insulating cylindrical cover 114 is further formed on an outer circumference of the first outer terminal 113, and the cylindrical cover 114 is located at one side of the case 131 of the rod 130 as shown. By being coupled or integrally installed, the first connector 110 as a whole is fixed to the case 131 of the rod 130 and serves to completely insulate.

The second connector 120 includes a second center terminal 121, a second insulator 122, and a second outer terminal 123. The second center terminal 121 is formed to have a predetermined length and can be connected to and disconnected from the first center terminal 111. Of course, the diameter of the second center terminal 121 is formed to be substantially similar to the diameter of the first center terminal 111, and the wire 125 is connected to the end. The second insulator 122 substantially surrounds the second center terminal 121. However, the front end and the end of the second center terminal 121 are exposed to the outside of the second insulator 122. The second outer terminal 123 is formed in a substantially circular ring shape on the outer circumference of the second insulator 122. In addition, the second outer terminal 123 may be a conductor and a magnetic material. Here, if the first outer terminal 113 is a conductive magnetic material, the second outer terminal 123 may be a conductive nonmagnetic material. On the contrary, if the second outer terminal 123 is a conductive magnetic material, the first outer terminal 113 may be a conductive nonmagnetic material. In addition, the first outer terminal 113 and the second outer terminal 123 may be magnetic materials having different polarities with respect to each other.

Here, as shown in FIG. 2C, the first center terminal 111 of the first connector 110 may be connected to the second center terminal 121 of the second connector 120. In addition, the first insulator 112 of the first connector 110 may be in contact with the second insulator 122 of the second connector 120. In addition, the first outer terminal 113 of the first connector 110 may be connected to the second outer terminal 123 of the second connector 120. Therefore, when the first connector 110 installed in the case 131 of the rod 130 is close to the second connector 120 installed in the body 141 of the power jack 140, the first connector 110 is automatically bonded by magnetic force and electrically. The rod 130 is applied with a predetermined power through the power jack 140.

Meanwhile, the second outer terminal 123 of the second connector 120 is coupled to the inner side of the cylindrical cover 114 of the first connector 110 so that each terminal 121 and 123 of the second connector 120 is coupled. Guide them to be matched with the terminals 111 and 113 of the first connector 110 corresponding thereto, and also prevent the second connector 120 from being easily separated from the first connector 110. . Of course, since the first outer terminal 113 of the first connector 110 and / or the second outer terminal 123 of the second connector 120 is a magnetic material, once bonded due to its own properties, a predetermined bonding force is achieved. It is not easily separated from each other by keeping the. In addition, since the first outer terminal 113 of the first connector 110 and / or the second outer terminal 123 of the second connector 120 is a magnetic material, there is no force required for coupling work between them. can do. In addition, each terminal (111, 113, 121, 123) is a whole body, when the magnetic force can be reduced by magnetic interference, in particular, when the spark generated during energization can be easily deteriorated magnetic force, cylindrical cover ( A magnetic body is provided at the proximal end of 114), and when connected, the end of the second connector can be drawn in and kept in energized state to perform the same function.

In addition, as illustrated in FIGS. 3A and 3B, the first outer terminal 113 (or the second outer terminal 123) may have a substantially circular ring shape or may have a substantially rectangular shape, that is, a magnetic material only partially. Here, the shape of the first outer terminal 113 (or the second outer terminal 123) is not limited to a specific form.

Referring to FIG. 4A, a power connection structure according to another embodiment of the present invention is shown as a cross-sectional view, and referring to FIG. 4B, a combined cross-sectional view is shown.

As shown, since the power connection structure 200 is similar to the power connection structure 100 described above, the same elements are denoted by the same reference numerals and the details thereof are omitted, and the differences will be described here.

As illustrated, a predetermined space 225 is further formed at the rear end of the first center terminal 211 of the first connector 210 by the first insulator 212. In addition, a spring 226 is further provided in the predetermined space 225 of the first insulator 212. Of course, the first center terminal 211 and / or the first outer terminal 213 may be located at one side of the spring 226, so that the first center terminal 211 is located in FIGS. 4A and 4B. Shown. In addition, an electric wire 215 is connected to the first center terminal 211 through the spring 226. The first center terminal 211 may protrude slightly more than the second outer terminal 223.

In this way, when the second connector 220 is coupled to the first connector 210, first, the second center terminal 221 of the second connector 220 is the first center of the first connector 210. The terminal 211 is pushed to one side. At this time, when the spring 226 is installed on the rear of the first center terminal 211 as shown, the first center terminal 211 is retracted by a predetermined distance while compressing the spring 226, and also the second The second outer terminal 223 of the connector 220 is connected to the first outer terminal 213 of the first connector 210. By this action, the second center terminal 221 of the second connector 220 is first connected to the first center terminal 211 of the first connector 210, and then the second outer terminal 223 is first connected. It is connected to the outer terminal 213, which narrows the width so that the first center terminal 211, which may have a small contact area, is connected first and finally short-circuited, thereby effectively preventing electrical spark during connection while ensuring certainty of energization. You can do it. In addition, when the first outer terminal 213 and the second outer terminal 223 are -polarized, an electrical spark phenomenon can be effectively prevented at the time of mutual connection.

5A is a cross-sectional view illustrating a power connection structure according to another embodiment of the present invention, FIG. 5B is a plan view of a main part, and FIG. 5C is a combined cross-sectional view.

As shown in FIG. 5A, the power connection structure 300 according to another embodiment of the present invention also includes a first connector 310 and a second connector 320.

The first connector 310 includes a pair of hollow first terminals 311, an auxiliary terminal 312 provided inside each of the first terminals 311, and the pair of first center terminals 3. 311 includes a first insulator 313 formed at an outer circumference thereof so as to be spaced apart from each other by a predetermined distance.

In addition, the second connector 320 is coupled to a pair of first terminals 311 provided in the first connector 310, respectively, and a pair of second terminals contacting and separating the auxiliary terminal 312 ( 321 and a second insulator 322 formed on an outer circumference thereof so that the pair of second terminals 321 are spaced apart from each other by a predetermined distance.

Here, the auxiliary terminal 312 of the first connector 310 or the second terminal 321 of the second connector 320 may be a conductor and at least one of them may be a magnetic material. In the drawings, reference numerals 315,316 and 325,326 are wires.

In addition, when the present invention is applied to a rod for perm, the first connector 310 is installed at one side of the case of the rod, and the first terminal 311 is each wired to a heater mounted inside the case of the rod. 315, 116). In addition, the second connector 320 may be installed at one side of the power jack 340 and connected to the wires 325 and 126 at the same time so as to be coupled to the first connector 310 so as to energize power. It is shown empirically that it can be used as it is.

Subsequently, as illustrated in FIG. 5B, the second terminal 321 may be coupled to the first terminal 311 of the first connector 310. At this time, since the auxiliary terminal 312 provided inside the first terminal 311 is a magnetic material, the second terminal 321 is strongly connected to the auxiliary terminal 312 by magnetic force. That is, even if a user only slightly couples the second connector 320 to the first connector 310, the second terminal 321 of the second connector 320 is connected to the first terminal by the magnetic force of the auxiliary terminal 312. Strongly coupled to the inside of the terminal 311.

6 is a partially broken perspective view showing a power connection structure according to another embodiment of the present invention, Figure 6a is a state before the connection Figure 6b is a state diagram showing a connection state.

The power connection structure 400 according to another embodiment of the present invention also includes a first connector 410 and a second connector 420.

The first connector 410 has a first center terminal 411 protruding from the root side by a predetermined length (L), a first insulator 412 surrounding the outer periphery of the first center terminal 411, and The first insulator 412 includes an annular first outer terminal 413 inserted to expose only a front end surface of the first insulator 412.

In addition, the second connector 420 forms a second center terminal 421 having a hole into which the first center terminal 411 provided in the first connector 410 is inserted, so that the first center terminal 411 is formed. The electrical connection is made by being inserted into the second center terminal 421. The taper is formed in one or both of the protrusions of the first center terminal 411 or the holes of the second center terminal 421 to form an electrical connection. Before the first center terminal 411 enters the second center terminal 421, the first portion of the first terminal 411 becomes narrower as the first entry terminal 411 becomes narrower even if a little distance (smaller diameter than the inner diameter) is left. When in close contact with the front end surface of the center terminal 421, the outer diameter of the first center terminal 411 and the inner diameter of the second center terminal 421 coincide or slightly increase the outer diameter, thereby ensuring electrical contact. Ensuring some areas of coincidence increases the conduction area to reduce impedance It is essential as a zoom, and the second outer terminal 423 is provided on the outer circumference of the second center terminal 421 via the second insulator 422 to be in contact with the first outer terminal 413 to be energized.

In addition, any one of the first outer terminal 413 of the first connector 410 or the second outer terminal 423 of the second connector 420 is a magnetic material and the other is a conductor. Alternatively, one of the N poles and the other of the magnetic poles are S poles, so that the outer terminals 413 and 423 are in contact with each other by magnetic force.

Here, the inner diameter φ ₂ of the second center terminal 421 is slightly larger than the outer diameter φ ₁ of the first center terminal 411, and the first outer terminal 413 or the second outer terminal is formed. On the contact surface of any one of the terminals 423, a tapered surface 427 having an inclination angle π≥tan ^-1 {(φ ₂ -φ ₁ ) / 2L} is formed so as to form a tapered surface on the first center terminal side (not shown). can do.

That is, the first center terminal 411 is protruding to protrude, and the second center terminal 421 has a hole so that the first center terminal to be inserted well in consideration of the processing error occurs during mass production Preferably, the inner diameter of the second center terminal 421 is slightly larger than the outer diameter of 411, and in this case, the distance between the center terminals 411 and 421 is separated by (φ ₂ -φ ₁ ) / 2L. The tapered surface 427 is also connected while the first center terminal 411 is inclined in the second center terminal 421 so that the tip is brought into contact with one of the contact surfaces as the tapered surface 427 to secure the To keep it going. At this time, the tapered surface 427 may all have a tapered surface, but preferably, as shown in the drawing, a portion of the tapered surface 427 may be prepared to prepare for a processing tolerance.

As described above, the power connection structure according to the present invention, by installing a magnetic material in at least one of the first connection port or the second connection port of the power jack, effortlessly and automatically easily coupled to the power jack easily and easily separated by a small force It can be effected.

Of course, the connection / disconnection operation as described above, when applied to the rod for perm, there is an effect to prevent the phenomenon of being pulled out or matted by applying excessive force to the hair already wound during the coupling operation of the power jack.

In addition, the power connection structure according to the present invention has a simple internal configuration and a small number of parts, the manufacturing cost is low, and there is an effect that it is easy to assemble.

What has been described above is only one embodiment for implementing the power connection structure according to the present invention, the present invention is not limited to the above-described embodiment, the subject matter of the present invention as claimed in the following utility model claims Without departing from the technical spirit of the present invention to the extent that any person of ordinary skill in the art to which the present invention pertains various modifications can be made.

Claims (10)

A first connector provided with a first center terminal having a predetermined length, a first insulator formed on an outer circumference of the first center terminal, and a first outer terminal provided on an outer circumference of the first insulator; And, A second center terminal which is connectable to and detachable from a first center terminal of the first connector is provided, and a second insulator is formed on an outer circumference of the second center terminal, and a first outer edge is formed on an outer circumference of the second insulator. Second connection port with a second outer terminal connectable to and disconnected from the terminal Including; At least one of the first center terminal, the first outer terminal of the first connector, the second center terminal of the second connector, and the second outer terminal are magnetic bodies. The method of claim 1, A predetermined space is formed at the rear end of the first center terminal or the first outer terminal of the first connector, and both, and the first center terminal or the first outer terminal is formed at the predetermined space of the first insulator. Power supply structure, characterized in that each of the terminals or both of them are further provided with a spring which holds them forward. The method of claim 1, At least one of the first outer terminal of the first connector and the second outer terminal of the second connector is formed in a circular ring shape. The method according to any one of claims 1 to 3, The first connector is further formed with an insulating cylindrical cover so that the second outer terminal of the second connector is coupled to the outer periphery of the first outer terminal, the base end of the cylindrical cover where the front end of the second connector is located Power connection structure, characterized in that the magnetic material is installed on. The method according to any one of claims 1 to 3, The first connection port is installed on one side of the rod case, and the power connection structure, characterized in that the first center terminal and the second outer terminal is connected to the heater mounted inside the rod case, respectively, by wires. A pair of hollow first terminals is provided, and an auxiliary terminal is coupled to the inside of each of the first terminals, and a first insulator is disposed at an outer circumference thereof so that the pair of first center terminals are positioned at a predetermined distance from each other. A first connector formed; And, A pair of second terminals respectively coupled to the pair of first terminals provided in the first connection port and contacted and separated from the auxiliary terminal are provided, and the pair of second terminals are positioned to be spaced apart from each other by a predetermined distance. Second connector formed with a second insulator on the outer circumference Including; At least one of the auxiliary terminal of the first connector or the second terminal of the second connector is a magnetic material. The method of claim 6, The first connection port is installed on one side of the rod case, and at the same time, the first terminal is connected to the heater mounted inside the rod case, respectively, characterized in that the power connection structure. The method according to claim 6 or 7, The second connector is coupled to the first connector, the power supply structure, characterized in that installed on one side of the power jack to enable the power supply. A first connector provided with a first center terminal having a predetermined length, a first insulator formed at a root side outer periphery of the first center terminal, and a first outer terminal provided at an outer periphery of the first insulator; And, A second center terminal is inserted into the first center terminal of the first connector and is electrically connected. A second insulator is formed on an outer circumference of the second center terminal, and a second insulator is formed on an outer circumference of the second insulator. Second connection port provided with a second outer terminal connectable to and disconnectable from the first outer terminal Including; Any one or both of the first outer terminal of the first connector or the second outer terminal of the second connector is a magnetic material. The method of claim 9, The inner diameter φ ₂ of the second center terminal is slightly larger than the outer diameter φ ₁ of the first center terminal, and the inclination angle π≥tan on the contact surface of either the first outer terminal or the second outer terminal. A power connection structure, characterized by forming a tapered surface of ^-1 {(φ ₂ -φ ₁ ) / 2L}.

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