KR100679599B1 - Plug socket - Google Patents

Abstract

A plug socket is provided to prevent a conductor other than a plug grounding pin from being inserted into a space between pushed protrusions of a ground preventing part and prevent the generation of electric shock accidents. A plug socket(100) includes a terminal block(400) having a plug hole(401) into which a grounding pin(301) of a plug(300) is inserted and a terminal hole, an inner case(500) combined with the front side of the terminal block, and an outer case(600) combined with the front side of the inner case. The plug socket further includes a power terminal(10), a ground terminal, a cylindrical ground preventing part, and a ground terminal unit. The power terminal is combined with the terminal hole of the terminal block. The ground terminal is combined with the plug hole of the terminal block and has a plurality of insertion holes. The ground preventing part is combined with the insertion holes of the ground terminal and has pushed protrusions formed at an equal interval. The ground preventing part has a cut formed along the length direction. The ground terminal unit includes a pair of elastic members each having a combining part combined with the cut of the ground preventing part.

Description

Plug sockets installed in buildings

Figure 1a is a partial cutaway perspective view showing an example of a conventional plug socket,

Figure 1b is a cross-sectional view of the operation of the plug of Figure 1a is inserted;

2 is an exploded perspective view of a socket for a plug installed in a building according to the present invention;

3 is an exploded and coupled sequence perspective view of the ground terminal unit according to the present invention;

Figure 4a is a front and front cross-sectional view of the ground terminal unit according to the present invention,

4b is a front view and a front sectional view of a ground pin coupled to a ground terminal unit according to the present invention;

Figure 5a is a longitudinal cross-sectional view of the ground terminal and the power terminal coupled to the plug hole in accordance with the present invention,

Figure 5b is a longitudinal cross-sectional view of the ground terminal and the power terminal coupled to the plug hole in accordance with the present invention,

6A is an operation state in which an electric shock is prevented when a conductor is inclinedly inserted into a ground terminal coupled to a plug hole according to the present invention;

6b is an operating state in which an electric shock is prevented when a conductor is inserted in a straight line to a ground terminal coupled to a plug hole according to the present invention;

<Description of Symbols for Main Parts of Drawings>

10: power terminal section 11: power terminal

11a: contact groove 11b: electric wire

20: earthing terminal 21: fitting hole

30: earthing protection 31: jungle protrusion

31a: protrusion 32: body

32a: end 40: elastic member

41: coupling end 50: ground terminal

100: socket 200: fixing bracket

300: plug 301: ground pin

400: terminal block 401, 501, 601: plug hole

402: terminal groove 500: inner case

600: outer case

The present invention relates to a socket for a plug to be installed in a building, in particular to restrict the insertion of the tool except for the grounding pin of the plug and at the same time to prevent the electrical contact, and to be installed in the building that can prevent the tightening tension of the socket is lowered during long time use It relates to a socket for a plug.

In general, electricity is used as a power source for all electric and electronic products such as industrial, office equipment and home appliances, as well as night and indoor lighting throughout society, from general homes, offices, or various industrial sites. It occupies a very important position as an indispensable energy source.

Accordingly, all buildings are wired indoors to supply electricity, and for easy connection with the product, the electrical cord is connected to the wall of the building to insert power plugs into the product. It is common to install plug sockets to the outside.

However, when the plug socket is not in use of the product, that is, when the plug of the product cord is not connected to the plug socket, the coupling slot for inserting the connection terminal of the plug is exposed to the outside.

As a result, safety accidents through coupling slots of the plug sockets, particularly safety accidents caused by electric shocks caused by children inadvertently inserting a conductor such as metal chopsticks into the coupling slots, are frequent.

On the other hand, Korea's power supply policy has been changed many times, and 220V is supplied to all new buildings under the 220V supply policy in the 1980s. When an electric shock accident occurs through the coupling slot of the plug socket, There was a risk of fatality that threatened the life of the electromagnet.

1A and 1B show an example of a conventional plug socket 1 for solving these problems.

This is supported by a support lever 4 rotatably supported by a support lever 4 having a cover head 6 at both ends which blocks its coupling slot 3 from the inside of the casing 2. (6) is elastically biased in a predetermined direction by a spring (not shown in the figure) so that the coupling slot 3 is always blocked.

Then, the connecting terminal C of the plug P is connected to the coupling slot of the plug socket 1 while the cover head 6 of the blocking lever 5 is blocking the coupling slot 3 of the plug socket 1. When it is inserted into (3), the closing lever 5 is rotated as the front end of the connecting terminal C is in sliding contact with the inclined surface 6a formed in the opposite direction to each cover head 6 so that the coupling slot 3 Is opened, whereby the connection terminal C of the plug P enters into the plug socket 1 and is connected to the connection tab T. As shown in FIG.

In addition, the outer diameter of the cover head (6) is configured to be relatively smaller than the diameter of the coupling slot (3), as shown in 1b, when inserting chopsticks or the like in only one of the coupling slot (3), the blocking lever ( 5) acts as a lever around the support shaft 4 so that the cover head 6 at its other end enters into and engages the corresponding coupling slot 3, thereby preventing rotation of the blocking lever 5.

However, in the conventional plug socket 1, the outer diameter of the cover head 6 of the blocking lever 5 is smaller than the diameter of the coupling slot 3, so that a constant gap is formed between them.

Therefore, when the chopsticks or the awl are inserted into the coupling slot 3, they are easily inserted into the plug socket 1 through the gap between the coupling slot 3 and the cover head 6, and the blocking lever 5 ) Can be simply rotated to open the coupling slot (3), there was a problem that the risk of electric shock through the coupling slot (3) still lurking.

In addition, the cover head 6 of the blocking lever 5 is limited to a certain size and can be configured to be relatively small, the mechanical strength is very weak so that the cover head 6 is easily broken when forcibly opened by chopsticks or the like. In this case, there is also a problem that the broken cover head 6 remains in the casing 2 causing the plug socket 1 to malfunction.

As a solution for this problem, a method of configuring the cover head 6 of the blocking lever 5 to be larger than the diameter of the coupling slot 3 may be devised, but in this case, only one coupling slot 3 may include chopsticks. Since the cover head 6 of the other end cannot be inserted into the corresponding coupling slot 3 even when it is inserted, the blocking lever 5 is easily rotated so that the coupling slot 3 is opened. Is useless and cannot be a fundamental solution.

Therefore, in view of the conventional problems, there is a need for a plug socket that can completely and reliably block the coupling slot into which the connection terminal of the plug is inserted from the outside to thereby prevent the risk of electric shock.

Accordingly, the present invention has been made in view of the problems of the prior art as described above, by combining a grounding prevention device with the grounding terminal to prevent the insertion of conductive tools other than the plug grounding pin between the rolling protrusions and the grounding terminal and the electric shock accident. It is an object of the present invention to provide a socket for a plug that is installed in an improved structure to prevent the occurrence.

In addition, another object of the present invention is to form a grounding protection to be pushed by the restoring force of the elastic member when using the socket over a long period of time between the grounding terminal and the grounding pin of the plug is generated due to poor contact state and play It is an object of the present invention to provide a socket for a plug that is installed in a structure that is improved to prevent the departure.

In order to achieve the above object, the present invention is coupled to a fixing bracket for fixing, the terminal block and the terminal hole is formed so that the plug hole and the terminal groove is inserted in communication with the front and rear of the plug, the front surface of the terminal block In the socket for the plug is installed in the building formed of the inner case is coupled to the outer case coupled to the front surface of the inner case,

It is coupled to the terminal groove of the terminal block, a contact groove is formed at one end, the power terminal is connected to the other end is formed a power terminal portion consisting of a non-conductor coupled to the front surface of the power terminal,

A ground terminal inserted into a plug hole of a terminal block and having one end coupled to a contact groove formed in a power terminal of a power terminal unit, having a cylindrical shape, and having a plurality of fitting holes formed along an outer circumferential surface thereof;

It is fitted in the fitting hole of the ground terminal, coupled to the upper surface of the cylindrical protrusion formed with a plurality of locking projections formed at equal intervals in the body, the end is cut along the longitudinal direction formed of a cylindrical grounding prevention device,

The end of the grounding protection is inserted into the coupling, characterized in that consisting of the ground terminal portion consisting of an elastic member formed in a pair of spaced apart coupling end bent in the '' 'shape.

In addition, the locking projection of the grounding prevention device is a right-angled triangular shape toward the front side of the plug hole, the jungle projection provides a socket for the plug is installed in the building, characterized in that both ends are inclined in the longitudinal direction facing inward.

The preferred embodiment of the present invention as described above will be described in detail based on the accompanying drawings.

2 is an exploded perspective view of a socket for a plug installed in a building according to the present invention, FIG. 3 is a perspective view illustrating an exploded and coupled sequence of the ground terminal unit according to the present invention, and FIG. 4A is a front view of the ground terminal unit according to the present invention. And FIG. 4B is a front view and a front sectional view in which a ground pin is coupled to a ground terminal unit according to the present invention, and FIG. 5A is a longitudinal sectional view in which a ground terminal unit and a power terminal unit are coupled to a plug hole according to the present invention. 5B is a longitudinal cross-sectional view of the ground terminal portion and the power terminal portion coupled to the plug hole according to the present invention, and FIG. 6A is an operating state diagram in which an electric shock is prevented when the conductor is inclinedly inserted into the ground terminal coupled to the plug hole according to the present invention. 6B is an operation state diagram in which an electric shock is prevented when a conductor is inserted in a straight line portion connected to a plug hole according to the present invention.

As shown in Figure 2 to 5b, the socket for the plug to be installed in the building of the present invention is coupled to the fixing bracket 200 for fixing, the plug hole is inserted into the ground pin 301 of the plug 300 ( 401 and the terminal groove 402 is formed in communication with the front / rear direction, the inner case 500 coupled to the front surface of the terminal block 400, and the front surface of the inner case 500 It is formed of an outer case 600 coupled to.

The fixing bracket 200 is manufactured by bending a metal plate, and is fixed by a coupling method using bolts in a terminal box installed on a wall in a common house not represented in the drawing.

In addition, the terminal block 400 has a pair of plug holes 401 formed at a front surface thereof so that the ground pin 301 of the plug 300 is coupled to the front, and a terminal formed to communicate with the rear of the plug hole 401. It consists of a groove 402.

In addition, the inner case 500 is configured to serve to protect the terminal block 400, a pair of plug holes 501 are formed in communication with the plug hole 401, the bolt is fixed to the fixing bracket 200 It is fixed by the fastening method used.

In addition, the outer case 600 is formed with a pair of plug holes 601 communicating with the plug hole 501, the coupling protrusions not shown in the drawings to further protect the inner case 500, the outer case ( It is formed on the rear surface of 600, the inner case 500 is formed so that the coupling groove is coupled to the engaging projection is configured to be simply coupled / disassembled to the outer case 600 to the inner case (500).

In addition, the power supply terminal unit 10 is coupled to the terminal groove 402 of the terminal block 400, the contact groove 11a is formed at one end, the power terminal 11 to which the wire 11b is connected is formed at the other end It is composed of a non-conductor 12 is coupled to the front surface of the power supply terminal (11).

That is, the power supply terminal 11 is coupled to the terminal groove 402 in a fitting manner, and is configured in the shape of a cylinder.

In addition, the power supply terminal 11 is formed so that the electric wire 11b is connected to the welding method or the wire 11b in a contact manner so that the electric energy supplied from the outside is transferred through the electric wire 11b.

In addition, the contact groove 11a of the power supply terminal 11 is configured as a cylindrical groove having a shape of the power supply terminal 11 so that one end of the ground terminal 20 to be described later is fitted and coupled.

On the other hand, the insulator 12 is a two-stage cylindrical shape with a different diameter, can be used as a rubber material, plastic, non-conductive metal that does not transfer electrical energy, is inserted into the power supply terminal (11) and coupled, the insulator 12 Is configured not to cover the front of the contact groove (11a).

In addition, the ground terminal 20 of the ground terminal portion 50 is inserted into the plug hole 401 of the terminal block 400, one end of the contact groove (11a) formed in the power terminal 11 of the power terminal portion 10. Combined and cylindrical, but consists of a plurality of fitting holes 21 along the outer circumferential surface.

That is, the ground terminal 20 is inserted into the plug hole 401 of the terminal block 400, the plug hole 401 in the present invention is formed larger than the outer diameter of the ground terminal 20 is the ground terminal 20 In order to solve the problem that can not be fixed, one end is formed to be coupled to the contact groove (11a) formed in the power supply terminal (11).

In addition, the fitting hole 21 penetrates through the thickness direction of the ground terminal 20, and the fitting hole 21 is formed at one end of the ground terminal 20 fitted into the contact groove 11a of the power terminal 11. It is configured not to form.

In addition, the grounding prevention device 30 is fitted into the fitting hole 21 of the grounding terminal 20 and coupled to the upper surface, the projection protrusions 31 formed with a plurality of locking projections 31a on the body 32 at equal intervals. It is formed in the form, the end 32a is formed in a cylindrical shape cut along the longitudinal direction.

Here, the engaging projection 31a is formed along the longitudinal direction at the upper end of the jungle projection 31, and is configured in a right triangle shape toward the front side of the plug hole 401.

In other words, if the end is inserted through the plug hole 401 or a conductor such as a pointed screwdriver, awl, nail, chopsticks, etc., it is caught by the locking protrusion 31a and is not configured to enter the inside.

Such a grounding prevention device 30 is manufactured by using a casting method, and the upper surface of the wide plate is formed with an integral protrusion 31 formed at equal intervals.

That is, the jungle protrusions 31 are formed in a rectangular bar shape along the longitudinal direction of the grounding prevention device 30.

And, the protrusions 31 are formed so that both ends are inclined in the longitudinal direction to face inward, in further detail, the jungle protrusions 31 is formed in a trapezoidal shape with a long length in the longitudinal direction to ground the plug 300 When pushed up by the pin 301 is configured to prevent both ends of the push projection 31 is caught on both ends of the fitting hole (21).

In addition, the elastic member 40 is formed in a pair of spaced apart the coupling end 41 bent in the '' 'shape, so that the end (32a) of the grounding stopper 30 is inserted.

Here, the elastic member 40 is formed so that the end 32a of the ground stopper 30 can be slide-bonded by forming a coupling end 41 by bending the end inwardly in a cylindrical shape of a thin plate.

In addition, the elastic member 40 is a space in which the grounding stopper 30 is expanded at the same time and the grounding pin 301 can enter when pushed in a radial action by the ground pin 301 of the plug 300 The socket 100 is configured to operate to form a.

Referring to the operation of the present invention configured as described above are as follows.

2 to 5b, the power terminal 11 coupled to the front surface of the non-conductor 12 to the terminal groove 402 of the terminal block 400 is firmly coupled using an interference fit method.

Thereafter, the wire 11b for transmitting the electric energy supplied from the outside is coupled to the power supply terminal 11.

Then, the coupling protrusion 31 of the grounding prevention device 30 is inserted into the fitting hole 21 of the ground terminal 20 and coupled thereto.

At this time, the grounding prevention device 30 is used that is formed of a plastic material that can be bent along the circumference of the ground terminal (20).

Thereafter, the end 32a of the grounding prevention device 30 is inserted into and coupled to the coupling end 41 of the elastic member 40, and is pushed into the elastic member 40 to fix it.

Next, the elastic member 40 coupled with the grounding terminal 20 and the grounding prevention device 30 is inserted into the plug hole 401 of the terminal block 400, and the rear end of the grounding terminal 20 is connected to the power supply terminal. Insert into the contact groove 11a of (11) and fix it.

Next, the inner case 500 and the outer case 600 are sequentially fixed, and then the plug 300 is inserted to enable various electric appliances.

At this time, when the plug 300 is inserted through the plug holes 601 and 501 of the outer case 600 and the inner case 500, the protrusion protrusion (B) is caused by the curvature R of the ground pin 301 of the plug 300. 31) is pushed.

In detail, when the ground pin 301 pushes the jungle protrusion 31, the ground protrusion 31 comes into contact with the front surface of the jungle protrusion 31, so that the front of the earth barrier 30 is wider and the rear thereof is narrower. If the ground pin 301 is continuously entered in a state that is inclined inclined, the push protrusion 31 is pushed radially by the outer diameter of the ground pin 301.

The elastic member 40 is also expanded at the same time by the expansion action of the grounding prevention device 30, and the ground pin 301 of the plug 300 contacts the ground terminal 20 so that electrical energy is transmitted through the plug 300. To supply electrical appliances.

As shown in Figure 6a and 6b, looks at how to prevent an electric shock using the socket 100 as follows.

1. Curious children, such as the plug hole (601,501) of the inner case 600,500 using a conductor, such as a screwdriver, awl, nail, metal rod, chopsticks formed of an electrically conductive metal material, not the plug 300 When inserted into the), the projection (31) of the grounding prevention device 30 serves to prevent contact with the ground terminal 20 to prevent an electric shock accident.

2. If a conductor such as a screwdriver, awl, nail, metal rod, chopsticks, etc. enters into the grounding terminal 20, the terminal is in contact with the grounding terminal 20 as the end is impossible to enter due to the locking action 31a. It prevents electric shock and prevents electric shock.

3. Even if the insertion is made without being caught by the latching protrusion 31a in the process of inserting a conductor such as a screwdriver, awl, nail, metal rod, chopsticks, etc. between the protrusions 31 of the grounding prevention device 30, the power supply terminal As the contact with the non-conductor 12 coupled to (11) does not flow a current to prevent the electric shock accidents.

In addition, in the socket 100 of the present invention, the protrusion protrusion 31 of the grounding stopper 30 pushes the ground pin 301 of the plug 300 by the restoring force of the elastic member 40, thereby preventing the conventional socket. When the long time use, which is a problem, the diameter of the grounding terminal 20 in contact with the grounding pin 301 is widened, thereby preventing the defects of the contact and easily detached by the clearance generated.

In addition, the socket 100 of the present invention may be applicable to a plug socket of a multi-family house as well as a multi-socket for a plug used at home.

In the above, the present invention has been illustrated and described with reference to specific preferred embodiments, but the present invention is not limited to the above-described embodiments and is not limited to the spirit of the present invention. Various changes and modifications can be made by those who have

As described above, the present invention has the effect of improving the grounding terminal and the electric shock by preventing the insertion of the conductive tool other than the plug grounding pin between the protrusions by coupling the grounding protection to the grounding terminal.

In addition, when the socket is used for a long time by the restoring force of the elastic member, when the socket is used for a long time, a gap is generated between the ground terminal and the ground pin of the plug. It works.

Claims (2)

The terminal block 400 is coupled to the fixing bracket 200 for fixing, and the plug hole 401 and the terminal groove 402 into which the ground pin 301 of the plug 300 is inserted are communicated in the forward / backward direction. And, in the socket for the plug installed in the building formed of the inner case 500 coupled to the front surface of the terminal block 400, the outer case 600 coupled to the front surface of the inner case 500, It is coupled to the terminal groove 402 of the terminal block 400, the contact groove 11a is formed at one end, the power terminal 11 to which the wire 11b is connected is formed at the other end of the power terminal 11 A power supply terminal portion 10 including a non-conductor 12 coupled to a front surface thereof, Inserted into the plug hole 401 of the terminal block 400, one end is coupled to the contact groove (11a) formed in the power terminal 11 of the power supply terminal portion 10, a cylindrical shape, a plurality of fittings along the outer peripheral surface A ground terminal 20 having a hole 21 formed therein; Fitted and fitted into the fitting hole 21 of the ground terminal 20, the upper surface is formed with a plurality of locking projections 31a protrusion projection 31a is formed at equal intervals in the body 32, cut along the longitudinal direction Cylindrical grounding stopper 30 is formed with an end 32a, The end 32a of the grounding stopper 30 is inserted into and coupled to each other, and the coupling end 41 bent in a 'c' shape is spaced apart and formed in a pair, and the ground terminal part 50 made of an elastic member 40. Plugs installed in the building, characterized in that consisting of). The method of claim 1, wherein the locking projection (31a) of the grounding prevention device 30 is a right-angled triangular shape toward the front side of the plug hole 401, the push projection 31 is inclined in the longitudinal direction with both ends facing inwards. Plug socket is installed in the building, characterized in that configured.

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