JP7260710B1 - outlet device - Google Patents

Abstract

An object of the present invention is to provide an outlet device that can use a fuse containing an arc-extinguishing agent of a size capable of reliably coping with a strong lightning surge. A receptacle device (1) includes a receptacle body (6) having a blade receiving part (5), and a receptacle cover (7) detachably attached to the receptacle body (6). The outlet cover 7 has a fuse box 12 fixed to its back surface and having a protruding electrode 13 for connecting the arc-extinguishing agent-containing fuse 11 to the distribution line portion 4 . The socket main body 6 has a box insertion portion 15 into which the fuse box 12 is inserted when the socket cover 7 is attached, and a receiving metal fitting 16 into which the projecting electrode 13 is inserted by the insertion and connected to the distribution line portion 4. . [Selection drawing] Fig. 1

Description

The present invention relates to an outlet device in which a fuse box is provided on an outlet cover.

2. Description of the Related Art Conventionally, an outlet device provided with a fuse is known (see Patent Document 1, for example). The outlet device of Patent Literature 1 includes a seat body, a lid body, and a protection device. A plurality of pairs of socket conductive strips are installed on the base, and one socket conductive strip is connected to one protective device conductive strip, and the protective device conductive strips are connected to each other.

In addition, a cover with a rectangular hole corresponding to the conductive piece of the protection device is installed on the seat body, a display lamp is installed on the circuit board of the protection device, and two conductive springs are installed. The electrical circuit of the receptacle assembly is then formed by bringing both conductive springs into contact with the conductive portions at the ends of the fuse.

In normal use, the power source of the electrical equipment is ensured by inserting the power plug of the electrical equipment into the pair of conductive pieces of the socket. On the other hand, if an overload current flows, the fuse will burn out, the electrical circuit will be interrupted, and the indicator lamp will light.

Accordingly, the user can eliminate the cause of the failure and replace the fuse. To replace the fuse, grab the protrusions of the protective device with two fingers from the cuts on both sides of the flat hole in the lid, pull out the protective device, and remove the fuse whose both ends are in contact with each conductive spring of the protective device. , by replacing it with a new one and contacting each conductive spring at both ends thereof.

Utility Model Registration No. 3075125

However, according to the socket device of Patent Document 1, the fuse does not have the same length as the interval between the pair of conductive pieces of the socket. For this reason, when a strong lightning surge occurs, the fuse element melts and arc discharge occurs, causing damage to electrical equipment because the overvoltage or overcurrent cannot be interrupted, or even breaking the fuse tube and causing an arc. It is not sufficient to protect electrical equipment from lightning surges, such as discharge blowing out to the outside.

Moreover, even if a fuse containing an arc-extinguishing agent (silica sand) is used as the fuse, it is not possible to ensure sufficient breaking capacity against a strong lightning surge.

SUMMARY OF THE INVENTION An object of the present invention is to provide an outlet device that can use a fuse containing an arc-extinguishing agent that is large enough to reliably withstand a strong lightning surge.

The outlet device of the present invention includes:
an outlet main body having a blade receiving portion interposed in a distribution line portion from a power supply and into which the blade of the plug is inserted;
an outlet cover detachably attached to the outlet main body and covering a portion of the front surface of the outlet main body other than the blade receiving portion;
A fuse containing an arc-extinguishing agent is fixed to the back surface of the outlet cover to detachably hold a fuse containing an arc-extinguishing agent for blocking a lightning surge, and both ends of the fuse containing an arc-extinguishing agent protrude backward for connecting to the distribution line portion respectively. a fuse box having a pair of projecting electrodes;
a box insertion portion provided in the outlet main body and into which the fuse box is inserted by attaching the outlet cover to the outlet main body;
a pair of receiving metal fittings provided in the box insertion portion, into which the pair of protruding electrodes are fitted when the fuse box is inserted into the box insertion portion, and which connects the pair of protruding electrodes to the distribution line portion; It is characterized by having

In the present invention, the fuse box detachably holds a fuse containing an arc-extinguishing agent that cuts off a lightning surge, and is fixed to the back of the outlet cover. It can be configured to have a size large enough to accommodate a fuse containing an arc-extinguishing agent that can reliably withstand even a strong lightning surge. As a result, lightning surge countermeasures, which were conventionally inadequate, can be made perfect.

In addition, since the fuse box is fixed to the back of the outlet cover, when the outlet cover is removed from the outlet when replacing the fuse containing the arc-extinguishing agent, it can be removed from the box insertion part of the outlet at the same time, and the fuse box can be removed. At the same time, each protruding electrode is also separated from each receiving metal fitting of the box insertion portion, and the connection with the distribution line portion is released. Therefore, the arc-extinguishing agent-containing fuse can be safely attached to and detached from the fuse box.

In the present invention, the fuse box has an opening for attaching and detaching the arc-extinguishing agent-containing fuse to and from the fuse box on the side surface of the outlet cover facing in the direction along the back surface of the fuse box. You may According to this, the fuse containing the arc extinguishing agent can be easily attached to and detached from the fuse box on the back surface of the outlet cover.

In the present invention, the outlet main body has a energization lamp that lights when the arc-extinguishing agent-containing fuse is in an energized state, and the outlet cover has a window portion for confirming whether or not the energization lamp is lit. may be provided. According to this, when the arc-extinguishing agent-containing fuse is cut off, the energization lamp is extinguished, so that the cut-off state can be easily recognized.

In the present invention, the outlet body includes a plurality of the blade receiving portions arranged linearly, and the blade receiving portions are arranged so that the direction of the arrangement coincides with the longitudinal direction of the fuse box. Fuse boxes may be arranged along the sides. According to this, it is possible to compactly configure an outlet device having a fuse box corresponding to a fuse containing an arc-extinguishing agent of sufficient size for realizing a perfect lightning surge countermeasure.

1 is an exploded perspective view showing the configuration of an outlet device according to an embodiment of the present invention; FIG. 2 is a perspective view showing the back side of the outlet cover of the outlet device of FIG. 1; FIG. 2 is a perspective view showing the front side of the outlet body of the outlet device of FIG. 1; FIG. 4 is a perspective view showing the back side of the outlet body of FIG. 3; FIG. 2 is an exploded view of a fuse box of the outlet device of FIG. 1; FIG. FIG. 2 is an exploded view of a box insertion portion of the outlet device of FIG. 1;

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows the configuration of an outlet device according to one embodiment of the present invention. As shown in FIG. 1, the socket device 1 includes a socket body 6 interposed in a distribution line portion 4 of a distribution line 3 from a power source 2 and having two blade receiving portions 5 into which plug blades are inserted; A receptacle cover 7 is detachably attached to the main body 6 and covers the front surface of the receptacle main body 6 except for the blade receiving part 5.例文帳に追加

The outlet cover 7 has opening windows 8 at portions corresponding to the respective blade receiving portions 5 . Each blade receiving portion 5 is provided with two receiving metal fittings 9 for inserting a plug. The outlet device 1 is attached to an attachment portion 10 such as a wall, and is used by being supplied with power from a power supply 2 via a distribution line portion 4 .

FIG. 2 shows the back side of the outlet cover 7 . As shown in FIG. 2, a fuse box 12 that detachably holds a fuse 11 containing an arc extinguishing agent that cuts off a lightning surge is fixed to the back surface of the outlet cover 7 . The fuse box 12 has a pair of protruding electrodes 13 protruding rearward for connecting both ends of the arc-extinguishing agent-containing fuse 11 to the distribution line portion 4 .

As the arc-extinguishing agent-containing fuse 11, one capable of extinguishing arc discharge due to a lightning surge in as short a time as possible is used.

The fuse box 12 is arranged beside two opening windows 8 vertically spaced apart and extends vertically. Thus, the fuse box 12 is large enough to accommodate the fuse 11 containing an arc-extinguishing agent that perfectly blocks lightning surges.

Further, the fuse box 12 has an opening 14 for attaching and detaching a fuse containing an arc-extinguishing agent to and from the fuse box 12 on a side surface of the fuse box 12 on the back surface of the outlet cover 7 facing in the direction along the back surface of the fuse box 12 .

FIG. 3 shows the front side of the outlet body 6 . As shown in FIG. 3 , the outlet body 6 is provided with a box insertion portion 15 into which the fuse box 12 is inserted by attaching the outlet cover 7 to the outlet body 6 . A pair of protruding electrodes 13 of the fuse box 12 are inserted into the box inserting portion 15 by inserting the fuse box 12 into the box inserting portion 15, and the distribution line portion 4 connected to each protruding electrode 13 is connected 1. A pair of brackets 16 are provided.

Further, the outlet main body 6 has an energization lamp 17 which is lit when the arc-extinguishing agent-containing fuse 11 is in an energized state. The outlet cover 7 has a window portion 18 for checking whether or not the energization lamp 17 is lit (see FIG. 1).

FIG. 4 shows the back side of the outlet body 6 . As shown in FIG. 4, a distribution line portion 4 (illustrated by a broken line in the figure) formed by one distribution line 3 from the power source 2 is inserted into the lower wire insertion portion 19 of the box insertion portion 15, and It is connected to the bracket 16 .

The distribution line portion 4 connected to the upper receiving metal fitting 16 and pulled out from the upper wire insertion portion 19 is connected to one receiving metal fitting 9 of the lower blade receiving portion 5, and further connected to one of the upper blade receiving portions 5. It is connected to the receiving metal fitting 9 and connected to the energization lamp 17 .

On the other hand, a distribution line portion 4 (illustrated by a dashed line in the figure) by the other distribution line 3 from the power supply 2 is connected to the other receiving metal fitting 9 of the lower blade receiving portion 5, and furthermore, the upper blade receiving portion 5 is connected to the receiving metal fitting 9 on the other side, and is connected to the energizing lamp 17 .

FIG. 5 is an exploded view of the fuse box 12. As shown in FIG. As shown in FIG. 5, the fuse box 12 has upper and lower insertion metal fittings 21 and upper and lower fuse fixing metal fittings 22 fixed to the box 20, and the arc-extinguishing agent-containing fuse 11 is fitted into the upper and lower fuse fixing metal fittings 22 to provide insulation. It is constructed by attaching a rubber cover 23 .

The insert 21 has the protruding electrodes 13 described above. The connection between the fuse fixing fitting 22 and the insertion fitting 21 may be made by a bolt and nut connection or by a caulking pin.

FIG. 6 is an exploded view of the box insertion portion 15. As shown in FIG. As shown in FIG. 6, the box insertion portion 15 includes an insertion portion 24 into which the fuse box 12 is inserted, a wiring portion 25 provided with upper and lower wire insertion portions 19, and upper and lower insertion fittings 21 of the fuse box 12. It is provided with the above-mentioned receiving metal fitting 16 which is inserted.

The upper and lower receiving metal fittings 16 are attached to the upper and lower metal fitting mounting portions 26 of the partition separating the insertion portion 24 and the wiring portion 25 . The distribution line portions 4 inserted into the upper and lower wire insertion portions 19 are connected to the upper and lower receiving metal fittings 16, respectively.

In this configuration, the fuse box 12 of the outlet cover 7 holds the fuse 11 containing the arc-extinguishing agent, and the outlet device 1 can be used by attaching the outlet cover 7 to the outlet main body 6 . In this state, the arc-extinguishing agent-containing fuse 11 in the fuse box 12 is energized, so the energization lamp 17 is lit. This allows the user to know that the outlet device 1 is ready for use.

In this state, the user inserts the blade of the plug connected to the electrical device into the blade receiving portion 5 of the outlet body 6 to supply power from the power supply 2 to the electrical device and use the electrical device. can be done.

If a momentary high voltage (lightning surge) is applied to the power supply 2 due to a lightning strike while the electrical equipment is in use, assuming that the fuse in the fuse box 12 is a normal current fuse, Although the fuse element melts, there is a risk that the electrical equipment will be damaged because the distribution line portion 4 cannot be interrupted due to arc generation, or that the fuse tube will break and the arc will blow out to the outside.

In this regard, in this embodiment, since the arc-extinguishing agent-containing fuse 11 is held in the fuse box 12, even if a lightning surge is applied to it, the fuse element is rapidly melted by Joule heat, generating a The heat of the arc evaporates silica sand (arc-extinguishing agent), cooling the arc, increasing the arc resistance and restricting the current. Then, the vaporized silica sand (arc-extinguishing agent) is solidified to obtain high insulation, and the disconnection of the distribution line portion 4 is completed instantaneously.

When the arc-extinguishing agent-containing fuse 11 is cut off in this manner and the arc-extinguishing agent-containing fuse 11 is to be replaced with a new one, the outlet cover 7 is removed. At the same time, the fuse box 12 fixed to the back surface of the outlet cover 7 is also removed from the box insertion portion 15 of the outlet main body 6, and the protruding electrodes 13 of the fuse box 12 are also removed from the respective receptacles at the bottom of the box insertion portion 15. It is separated from the fitting 16 .

Then, the arc-extinguishing agent-containing fuse 11 in the open state is taken out from the opening 14 of the fuse box 12, and a new arc-extinguishing agent-containing fuse 11 is set in the fuse box 12 instead. After that, by reattaching the outlet cover 7 to the outlet main body 6, the replacement of the arc-extinguishing agent-containing fuse 11 is completed, and the outlet device 1 can be used again.

When the fuse 11 containing arc-extinguishing agent is replaced, the fuse box 12 is disconnected from the distribution line portion 4 and connected to the distribution line portion 4 while the outlet cover 7 is removed from the outlet body 6 . Since the brackets 16 of the box insertion part 15 are positioned at the bottom of the insertion part 24 of the box insertion part 15, the user can safely replace the arc-extinguishing agent-containing fuse 11 without fear of electric shock. be able to.

As described above, according to this embodiment, since the fuse box 12 is fixed to the back surface of the outlet cover 7, it can reliably withstand a strong lightning surge that cannot be dealt with by ordinary current fuses or small fuses. can be configured to have a size sufficient to accommodate the arc-extinguishing agent-containing fuse 11 having a size corresponding to . As a result, lightning surge countermeasures, which were conventionally inadequate, can be made perfect.

In addition, since the fuse box 12 is fixed to the back surface of the outlet cover 7, when the outlet cover 7 is removed from the outlet main body 6 in order to replace the arc-extinguishing agent-containing fuse 11, the protruding electrode 13 of the fuse box 12 is removed. At the same time, the box insert 15 is separated from the bracket 16 positioned at the bottom of the insert 24 of the box insert 15 . This allows the user to safely replace the arc-extinguishing agent-containing fuse 11 .

In addition, the fuse box 12 has an opening 14 for attaching and detaching the arc-extinguishing agent-containing fuse 11 to and from the fuse box 12 on the side surface of the fuse box 12 on the back surface of the outlet cover 7 facing in the direction along the back surface of the fuse box 12 . Therefore, the arc-extinguishing agent-containing fuse 11 can be easily attached to and detached from the fuse box 12 on the back surface of the outlet cover 7 .

Further, the outlet body 6 has a energization lamp 17 that lights when the fuse 11 containing the arc-extinguishing agent is in an energized state. , the user can easily ascertain whether or not the outlet device 1 is functioning normally.

Although the embodiments of the present invention have been described above, the present invention is not limited thereto. For example, the number of blade receiving portions 5 is not limited to two, and one or three or more may be provided.

In addition, a plurality of blade receiving portions 5 are arranged in a straight line. A fuse box 12 may be arranged along. According to this, it is possible to compactly configure an outlet device having a fuse box 12 large enough to realize a perfect lightning surge countermeasure.

DESCRIPTION OF SYMBOLS 1... Outlet apparatus, 2... Power supply, 3... Distribution line, 4... Distribution line part, 5... Blade receiving part, 6... Outlet main body, 7... Outlet cover, 8... Opening window, 9... Receiving metal fitting, 10... Mounting part , 11 Fuse containing arc-extinguishing agent 12 Fuse box 13 Projecting electrode 14 Opening 15 Box insertion portion 16 Receiving metal fitting 17 Energizing lamp 18 Window 19 Wire insertion portion , 20...Box, 21...Insert metal fitting, 22...Fuse fixing metal fitting, 23...Cover, 24...Insertion portion, 25...Wiring portion, 26...Metal attachment portion.

Claims (4)

an outlet main body having a blade receiving portion interposed in a distribution line portion from a power supply and into which the blade of the plug is inserted;
an outlet cover detachably attached to the outlet main body and covering a portion of the front surface of the outlet main body other than the blade receiving portion;
1 which is fixed to the back surface of the outlet cover, detachably holds a fuse containing an arc-extinguishing agent for blocking a lightning surge, and protrudes backward 1 for connecting both ends of the fuse containing an arc-extinguishing agent to the distribution line portion; a fuse box having a pair of protruding electrodes;
a box insertion portion provided in the outlet main body and into which the fuse box is inserted by attaching the outlet cover to the outlet main body;
a pair of receiving metal fittings provided in the box insertion portion, into which the pair of protruding electrodes are fitted when the fuse box is inserted into the box insertion portion, and which connects the pair of protruding electrodes to the distribution line portion; an outlet device, comprising: The fuse box has an opening for attaching and detaching a fuse containing an arc-extinguishing agent to and from the fuse box on a side surface of the back surface of the outlet cover facing in a direction along the back surface of the fuse box. The outlet device according to claim 1. The outlet main body has a energization lamp that lights when the arc-extinguishing agent-containing fuse is in an energized state, and the outlet cover has a window for checking whether or not the energization lamp is lit. 2. The outlet device according to claim 1. The socket main body includes a plurality of the blade receiving portions arranged in a straight line, and the direction of the arrangement is aligned with the length direction of the fuse box, along the side of the arrangement of the blade receiving portions. The outlet device according to any one of claims 1 to 3, further comprising a fuse box.

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