KR0138314Y1 - Plug socket - Google Patents

Abstract

The present invention discloses an improved plug socket.

Conventionally, a coupling slot pair of a plug socket into which a connection terminal of a plug is inserted is cut off from the outside by a blocking lever rotatably supported inside the casing, and a gap is generated between the cover head of the blocking lever and the pair of coupling slots. There was a problem that the risk of electric shock accidents.

In the present invention, the casing is provided with a spring for moving the blocking plate formed with a through-hole pair through which the connection terminal of the plug penetrates, and elastically biasing the through-hole to deviate from the coupling slot pair of the casing. Make sure the pair is isolated from the outside.

Description

Plug socket

1 is a partial ablation perspective view showing an example of a conventional plug socket.

Figure 2 (a) to (d) is an excerpt showing the action.

Figure 3 is a partial ablation exploded perspective view showing a plug socket according to the present invention.

4 is an excerpt binding cross section.

5 is a cross-sectional view taken along the line V-V of FIG.

Figure 6 (a) to (c) is a cross-sectional view showing the operation of the present invention.

* Explanation of symbols for main parts of the drawings

12 Casing 16 Combination slot pair

17: (casing) guide builder 18: (casing) guide home

20: blocking plate 21: through-hole pair (of blocking plate)

22: coupling head (of blocking plate) 24: fixing piece

25: spring P: plug

C: Connection terminal (plug)

The present invention relates to an electrical connection mechanism, and more particularly to a plug socket for inserting a plug of the product cord when connecting the wiring cord in the indoor wiring.

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 the society, from general homes, offices or various industrial sites. It occupies a very important place as an indispensable source of energy in today's daily life. As a result, all buildings are wired indoors to supply electricity, and plugs are connected to the electrical cords on the wall of the building for easy connection with the product. It is common to install sockets to the outside.

However, when the plug socket is not used, that is, when the plug of the product cord is not connected to the plug socket, the coupling slot for inserting the plug connection terminal is exposed to the outside. As a result, safety accidents through coupling slots of the plug sockets, especially 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 in accordance with the 220V supply policy in the 1980s. When an electric shock accident occurs through the coupling slot of the plug socket, There was a fear of fatality that threatened the life of the former.

1 and 2 show an example of a conventional plug socket 1 for solving these problems. This allows the support lever 4 to be rotatable on the support shaft 4 having a cover head 6 at both ends which blocks its coupling slot 3 from the outside inside the casing 2. It is supported, and the cover head 6 is elastically biased in the predetermined direction by the spring 7 so that the coupling slot 3 is always blocked. Accordingly, the plug P is connected as in (b) while the cover head 6 of the blocking lever 5 is blocking the coupling slot 3 of the plug socket 1 as shown in FIG. When the terminal C is inserted into the coupling slot 3 of the plug socket 1, 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 (c). As shown in FIG. 6, the coupling lever 3 is opened to open the coupling slot 3. Accordingly, the connection terminal C of the plug P enters into the plug socket 1 and its connection tab (接續 tab: T). Is connected to. 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 Fig. 2 (d) in the case of inserting chopsticks or the like only in any one of the coupling slot (3), blocking The lever 5 acts like a lever around the support shaft 4 so that the cover head 6 at its other end enters into and engages the corresponding engaging slot 3 to prevent rotation of the blocking lever 5. .

However, since the outer diameter of the cover head 6 of the blocking lever 5 is smaller than the diameter of the coupling slot 3, the plug socket 1 is formed with a constant gap G therebetween. As a result, when the chopsticks or the awl are inserted into the coupling slot 3, they can easily enter the plug socket 1 through the gap G between the coupling slot 3 and the cover head 6, as well as the blocking lever. Since the coupling slot 3 can be opened by simply rotating (5), there is a problem that the risk of electric shock accident through the coupling slot 3 still lurks. In addition, the cover head 6 of the blocking lever 5 is limited to a certain size to be configured relatively small bar, the mechanical strength is very weak, the cover head 6 is easily broken when forcibly opened by chopsticks, etc. In this case, there is also a problem that the broken cover head 6 remains in the casing 2 causing a malfunction of the plug socket 1.

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 is provided with a chopstick or the like. 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.

It is an object of the present invention to provide a plug socket which can prevent the risk of electric shock through the above by completely and reliably blocking a coupling slot for inserting a connection terminal of a plug in consideration of the above-mentioned conventional problems. .

In order to achieve the above object, the plug socket according to the present invention includes a casing in which a pair of coupling slots for inserting connection terminals of a plug are formed, and a connection tab provided inside the casing and electrically connected to the connection terminal of the plug. A plug socket for forming a through-hole pair corresponding to a pair of coupling slots of a casing, and is provided in the casing so as to be movable in a predetermined direction to block the coupling slot pair from the outside. And a spring for elastically biasing the blocking plate in a predetermined direction so that the through-hole pair is shifted from the coupling slot pair so as to block.

According to a preferred feature of the present invention, the coupling of the blocking plate to the casing, the coupling head is fixed to the blocking plate and movably coupled to the guide hole formed in the casing in a predetermined direction, inserting the circumference of the coupling head to the blocking plate It comprises a fixing piece for supporting the casing.

In this invention, the plug is connected to the plug socket by inserting the terminal end of the plug into the through-hole pair of the blocking plate and moving the blocking plate in the moving direction to match the through-hole pair with the coupling slot pair of the casing. Therefore, the coupling slot pairs of the casing can be reliably shut off from the outside, which greatly improves the safety and reliability of the plug socket.

Such specific features and other advantages of the present invention will become more apparent from the following description of the preferred embodiments with reference to the attached drawings.

3 and 5, the plug socket 11 according to the present invention has an external electric cord (not shown) in the lower casing 14 of the cube casing 12 consisting of the upper and lower casings 13,14. A connection tab T connected to the is installed. On the upper surface of the upper casing 13, a plurality of seating grooves 15 in which the plugs P are seated are formed to an appropriate depth, and the connection terminal C of the plug P is formed on the bottom surface of each seating groove 15. A pair of coupling slots 16 to be inserted are formed to correspond to the connection terminals C of the plug P.

Meanwhile, according to the characteristics of the present invention, the guide holes 17 having a predetermined length are formed in the middle of the bottom of each seating groove 15 of the upper casing 13 in a direction orthogonal to the direction passing through the centers of the pair of coupling slots 16. In each of the guide holes 17, a substantially elliptical blocking plate 20 for blocking the pair of coupling slots 16 of the upper casing 13 from the outside is installed to be movable. The blocking plate 20 has a pair of through holes 21 corresponding to the pair of coupling slots 16 of the casing 12 so that the connection factor C of the plug P passes through one side of the body, that is, the direction of movement thereof. It is formed to be biased to one side, and the coupling head 22 of the cube which is movably coupled to the guide hole 17 of the upper casing 13 is fixedly installed at a predetermined position of the lower surface. Accordingly, the blocking plate 20 couples the coupling head 22 to the guide hole 17, and the approximately C-shaped fixing piece 24 is formed on the inner side of the upper casing 13 around the coupling head 22. When it is coupled to the formed insertion groove 22a, the fixing piece 24 contacts the edge of the guide hole 17 on the lower surface of the upper casing 13, thereby preventing the separation from the casing 12 and preventing the fixing of the upper casing 13. Seating groove 15 is installed in close contact with the bottom surface is movable. The blocking plate 20 of the present invention is preferably configured to be of sufficient size to completely cover the pair of coupling slots 16 of the casing 12 and to block the outside even between the movement stroke.

Meanwhile, a support protrusion 23 is formed at one side of the coupling head 22 of the blocking plate 20 in the moving direction, and a lower surface of the upper casing 13 faces the support protrusion 23 of the coupling head 22. A pocket 29 is formed to elastically bias the blocking plate 20 between the supporting protrusions 23 and the pocket 19 in a predetermined direction so that the through holes 21 deviate from the pair of coupling slots 16. The spring 25 is installed. As a result, the blocking plate 20 reliably blocks the pair of coupling slots 16 of the casing 12 from the outside. In addition, the connection terminal (C) of the plug (P) is preferably easily inserted into the coupling slot (16) pair of the casing (12) on the bottom surface of the seating groove (15) located on both sides of the guide hole (17). A pair of guide grooves 18 for guiding the guide grooves 18 are formed in parallel with each other in the longitudinal direction of the guide slot 17. More preferably, the pair of guide grooves 18 is inclined appropriately toward the corresponding pair of coupling slots 16. Is formed.

The operation of the plug socket according to the present invention configured as described above will be described with reference to FIG.

In the plug socket 11 of the present invention, when the product is not used, that is, when the plug P is not inserted, the blocking plate 20 is elastically biased in a predetermined direction by the spring 25 so that the casing 12 The coupling slot 16 pair is blocked from the outside. When the product is to be used in such a state, first, as shown in FIG. 6 (a), the distal end of the connection terminal C of the plug P installed in the cord of the product as shown by the white arrow 20 is shown. The plug P is moved in the direction indicated by the black arrow (rightward in the drawing) after being inserted into the through hole 21 pair. Then, as shown in (b) and (c), the engaging head 22 of the blocking plate 20 compresses the spring 25 along the guide slot 17 of the casing 12 to its engaging slot 16. When the blocking plate 20 is moved together by being moved to the pair side, and the pair of through holes 21 of the blocking plate 20 coincides with the pair of coupling slots 16 of the casing 12, the connection terminal C of the plug P Is inserted into the pair of coupling slots 16 to be connected to the connection tab T fixed to the lower casing 14, whereby the plug P and the plug socket 11 are connected. At this time, the connection terminal C of the plug P is easily moved by the pair of corresponding guide grooves 18 of the casing 12 which is inclined toward the pair of the coupling slots 16, as well as the insertion into the pair of the coupling slots 16. Very easy.

When the use of the following products is to be stopped, disconnect the connection terminal C of the plug P from the plug socket 11 in the state of (b) and (c). Then, the blocking plate 20 is moved in the initial position direction along the guide hole 17 of the casing 12 by the elastic restoring force of the spring 25, whereby the pair of through holes 21 of the blocking plate 20 moves through the casing. The coupling slot 16 of the pair (12) is shifted so that the blocking plate 20 blocks the coupling slot 16 pair from the outside.

As described above, the blocking plate 20 of the plug socket 11 of the present invention is configured to linearly move along the guide hole 17 of the casing 12 by the coupling head 22, so that any one of the blocking plates 20 penetrates. Only by inserting the chopsticks and the like into the holes 21, the blocking plate 20 is not moved at all, so that the coupling slot 16 can be completely and reliably blocked from the outside. That is, when the chopsticks are inserted and pulled only in one of the through holes 21, the rotational force acts about the coupling head 22 to the blocker plate 20 of the present invention. Coupling head 22 of the) is to interfere with the guide hole 17 of the casing 12 is to prevent the movement of the blocking plate 20. Therefore, the plug socket 11 of the present invention can reliably block the pair of coupling slots 16 from the outside, thereby preventing the risk of safety accidents due to electric shocks on the coupling slots 16 as in the related art. . In addition, the present invention is because the blocking plate 20 is completely configured to cover the coupling slot 16 pair of the casing 12 from the outside close contact there is no gap between the blocking plate 20 and the coupling slot 16 pair at all. Even if a sharp object such as an awl, the blocking plate 20 can be inserted into the plug socket 11 in a state in which the coupling slot 16 pair is blocked from the outside, thereby significantly reducing the risk of electric shock. .

As described above, according to the present invention, when the product is not used, the coupling slot pair of the plug socket for inserting the connection terminal of the plug can be reliably cut off from the outside, so that safety accidents through the coupling slot pair, especially children's electric shock The accident can be prevented as much as possible. Therefore, the present invention has an effect of greatly improving the safety and reliability of the use of the plug socket.

Claims (4)

A coupling slot of the casing 12, comprising: a casing in which a pair of coupling slots for inserting connection terminals of a plug are formed; and a connection tab provided inside the casing and electrically connected to the connection terminal of the plug. A pair of through-holes 21 corresponding to the pairs of 16 are formed and installed in the casing 12 so as to be movable in a predetermined direction to block the pair of coupling slots 16 from the outside; A spring 25 for elastically biasing the blocking plate 20 in a predetermined direction so that the pair of through holes 21 are offset from the pair of coupling slots 16 so that the plate 20 blocks the pair of coupling slots 16 from the outside. Plug socket comprising a. The method according to claim 1, wherein the coupling of the blocking plate 20 to the casing 12 is fixed to the blocking plate 20 and movable to the guide hole 17 formed in the casing 12 in a predetermined direction. And a fixing piece 24 for inserting the coupling head 22 to be coupled to each other and the periphery of the coupling head 22 to support the blocking plate 20 to the casing 12. Plug socket. The plug socket according to any one of claims 1 to 3, wherein the blocking plate (20) is installed in contact with an outer surface of the casing (12). The guide groove (18) according to any one of claims 1 and 2, wherein the guide groove (18) guides the insertion of the plug (P) connection terminal (C) into the coupling slot (16) pair on the upper surface of the casing (12). Plug socket, characterized in that the pair is formed inclined toward the pair of the corresponding coupling slot (16).