JP3107168U - Extension wire device with neutral wire switching function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an extension line device having a neutral line switching function.
An extension wire device is connected to a live wire and a neutral wire of a wall outlet by a plug. The extension device 100 includes at least a light emitter 108, a protection element 110, and a switch 112. One end of the light emitter 108 is connected to the measurement point 114, and the other end is connected to one end of the resistor 116. The protection element 110 has one end connected to the measurement point 114 and the other end connected to the main plate 118. When the switch 112 is switched to the first position 120, the switch 112 switches the live line 104 to the measuring point 114, and when the switch 112 is switched to the second position 122, the switch 112 is neutral. 106 is switched to the measurement point 114. Thus, the extension wire device 100 can connect the neutral guide plate 130 to the neutral wire 106 by using the switch 112 without inserting or removing the plug 102.
[Selection] Figure 1

Description

  The present invention relates to an extension line device, and more particularly to an extension line device that inspects a live line and a neutral line and switches a ground plane to a neutral line.

  A general extension line is provided with three insertion holes, and is used for an electric product having a ground pin. For example, a screen pin of a general computer and a plug of a main body are provided with a ground pin. The ground pin removes electric leakage and radiation of electromagnetic waves, and can prevent the live and neutral wires from being connected in reverse.

  However, since a general wall outlet was provided with only a single-phase and two-hole outlet, an extension line having three insertion holes could not be connected. For this reason, ordinary people have removed the ground pin from the plug of the extension wire and adapted it to the two holes of the wall outlet. In this way, the ground pin loses its function, and the user has a possibility that the neutral wire and the live wire of the plug are inserted in the opposite direction, causing leakage and sensitive current (electromagnetic radiation).

  Therefore, it is possible to inspect live wires and neutral wires without repeatedly inserting and removing the plugs, and it is possible to accurately ground the ground plane by simple switching. There is a need for an extension line device that can flow to the ground of a wall outlet to protect the health of the human body and prevent electric shock.

A first object of the present invention is to provide an extension line device capable of inspecting a live line and a neutral line without repeatedly inserting and removing a plug.
A second object of the present invention is to provide an extension device that protects the health of the human body and prevents electric shock by flowing a sensitive current (electromagnetic wave) and electric leakage generated in an electrical product to the ground of a wall outlet.
A third object of the present invention is to provide an extension device that can accurately ground the ground plane by simple switching.

  In order to achieve the above-mentioned object, the present invention provides an extension line device having a neutral line switching function. According to a preferred embodiment of the present invention, the extension line device connects a live wire of a wall outlet and a neutral wire by a plug. The extension device comprises at least a light emitter, a protective element and a switch. One end of the light emitter is connected to the measurement point, and the other end is connected to one end of the resistor. One end of the protection element is connected to the measurement point, and the other end is connected to the main plate. The protective element prevents the passage of power surges and instantaneous high currents. When the switch is switched to the first position, the switch switches the live line to the measurement point, and when the switch is switched to the second position, the switch switches the neutral line to the measurement point. Therefore, this extension line device can connect the neutral guide plate to the neutral line only by using the switch without inserting or removing the plug.

  The switch is, for example, a slide switch. The protective element is, for example, a fuse, a low resistance body or a self-resetting fuse. The light emitter is, for example, a neon lamp. Resistors, light emitters and switches can be applied to any electrical product and can detect live and neutral wires.

The present invention has at least the following advantages.
Since this invention is equipped with the switch, it can inspect a live line and a neutral line, without inserting and removing a plug repeatedly. When the switch is switched to a different position, accurate data on the live and neutral lines can be provided according to the light emission results of the light emitter. When there is a problem with the indoor wiring, the present invention can detect an abnormality in the indoor wiring. When the light emitter emits light, it is possible to accurately connect the ground plane to the neutral wire of the wall outlet simply by switching the switch to the other position without turning off the electrical product. There is no need to insert or remove. By accurately connecting the ground planes, the sensitive current (electromagnetic wave) and electric leakage generated in the electrical product can be passed to the neutral wire of the wall outlet to protect the health of the human body and prevent electric shock.

  FIG. 1 is a view showing a preferred embodiment of the extension device of the present invention. FIG. 2 is a perspective view showing a preferred embodiment of FIG. As shown in FIGS. 1 and 2, the extension line device 100 is connected to a live wall 104 and a neutral line 106 of a wall outlet by a plug 102. The extension line device 100 includes a light emitter 108, a protection element 110, and a switch 112.

  One end of the light emitter 108 is connected to the measurement point 114, and the other end is connected to one end of the resistor 116. The protection element 110 has one end connected to the measurement point 114 and the other end connected to the main plate 118. The protective element 110 prevents power surges and instantaneous high currents from passing. When the switch 112 is switched to the first position 120, the switch 112 switches the live line 104 to the measurement point 114. When the switch 112 is switched to the second position 122, the switch 112 switches the neutral line 106 to the measurement point 114. Accordingly, the extension line device 100 can test by switching between the live wire 104 and the neutral wire 106 by the switch 112 without inserting or removing the plug 102, and the ground plate 118 can be switched to the neutral wire 106 by the switch 112. It can also be connected accurately.

  When the switch 112 is switched to the first position 120, the live line 104 is electrically connected to the measurement point 114. When the user touches one end 124 of the resistor 116 with a finger, the light emitter 108 emits light. When the switch 112 is switched to the second position 122, the neutral wire 106 is electrically connected to the measurement point 114. When the user touches one end 124 of the resistor 116 with a finger, the light emitter 108 does not emit light. Thereby, the light emitter 108 can detect the live line 104 and the neutral line 106.

  If the plug 102 is already inserted into the outlet, it is not necessary to remove the plug 102 and change the direction and insert it again. The switch 112 simply switches between the live line 104 and the neutral line 106 by the light emitter 108. The convenience of the detection operation can be enhanced. When the light emitter 108 emits light, the user simply switches the switch 112 to the other position, and accurately connects the ground plane 118 to the neutral wall 106 of the wall outlet without turning off the power to the electrical product. Therefore, there is no need to insert and remove the plug 102 again, which is very convenient.

  The switch 112 is a slide-type switch as shown in FIG. The extension device 100 includes a plurality of three insertion holes 126. The extension line device 100 includes a live guide plate 128 and a neutral guide plate 130. The hot wire guide plate 128, the neutral guide plate 130, and the ground plane 118 correspond to these three insertion holes 126. Next to each of the three insertion holes 126, a ground screw hole 132 is provided, which is used for an electrical product having a ground wire. The protection element 110 is, for example, a fuse, a low resistance body, or a self-resetting fuse (resettable fuse). The protection element 110 can prevent a power surge or an instantaneous large current from passing therethrough. The light emitter 108 is, for example, a neon lamp.

  The extension line device 100 includes an overload protection switch 134. The overload protection switch 134 has one end connected to the live wire 104 and the other end connected to the live wire guide plate 128. When the current passing through the overload protection switch 134 becomes excessive, the overload protection switch 134 automatically disconnects the hot wire 104 and the hot wire guide plate 128.

  When the plug is inserted into the outlet in the opposite direction, the live line 104 and the neutral line 106 shown in FIG. 1 are reversed, but the function of the switch 112 is not affected. The switch 112 can still switch between the live line 104 and the neutral line 106. At this time, one end of the overload protection switch 134 is connected to the neutral wire 104 (originally the live wire 104), and the other end is connected to the neutral guide plate 128 (originally the hot wire guide plate 128). Connected). When the current passing through the overload protection switch 134 becomes excessive, the overload protection switch 134 disconnects the connection between the neutral wire 104 and the neutral wire guide plate 128.

  As shown in FIG. 1, the power supply line detection device 136 includes a resistor 116, a light emitter 108, and a switch 112. The power supply line detection device 136 is not limited to use only in the extension line device 100, and can be used for any household electric appliance. And an electrical product can be correctly earth | grounded by detecting a live wire and a neutral wire.

  As can be seen from the above-described preferred embodiment of the present invention, the embodiment to which the present invention is applied has at least the following advantages. As shown in FIGS. 1 and 2, since the switch 112 is provided, the live line 104 and the neutral line 106 can be inspected without repeatedly inserting and removing the plug. When the switch 112 is switched to a different position, accurate data of the live line 104 and the neutral line 106 can be provided according to the light emission result of the light emitter 108.

  When the user notices the light emitted from the light emitter 108, the user can accurately connect the ground plate 118 to the neutral wire 106 of the wall outlet without turning off the power of the electric product only by switching the switch 112 to the other position. Therefore, there is no need to insert and remove the plug 102 again, which is very convenient. By accurately connecting the ground plane 118, a sensitive current (electromagnetic wave) and electric leakage generated in an electrical product can be passed to the neutral wire 106 of the wall outlet to protect the health of the human body and prevent electric shock.

  In the present invention, preferred embodiments have been disclosed as described above, but these are not intended to limit the present invention in any way. Fluctuations and hydration can be added. Therefore, the scope of protection of the present invention is based on the contents specified in the claims.

It is a figure showing one suitable example of an extension line device by the present invention. FIG. 2 is a perspective view showing a preferred embodiment of FIG. 1.

Explanation of symbols

  100 extension line device, 102 plug, 104 live line, 106 neutral line, 108 light emitter, 110 protective element, 112 switch, 114 measuring point, 116 resistance, 118 ground plane, 120 first position, 122 second position, 124 One end of resistor, 126 Three insertion holes, 128 Hot wire guide plate, 130 Neutral guide plate, 132 Ground screw hole, 134 Overload protection switch, 136 Power line detection device

Claims (21)

An extension line device comprising a light emitter, a protective element and a switch, and having a neutral wire switching function connected to a live wire and a neutral wire of a wall outlet by a plug,
The light emitter has one end connected to a measurement point, the other end connected to a resistor,
The protective element has one end connected to the measurement point and the other end connected to the ground plate to prevent a power surge or instantaneous large current from passing through,
When the switch is switched to the first position, the switch switches the live line to the measurement point;
When the switch is switched to the second position, the switch switches the neutral line to the measurement point;
An extension line device having a neutral line switching function, wherein the neutral line is switched using the switch to accurately ground without inserting or removing the plug.   2. The extension line device having a neutral line switching function according to claim 1, wherein the switch is a slide type switch.   2. The extension device having a neutral wire switching function according to claim 1, wherein the protection element is a fuse.   2. The extension wire device having a neutral wire switching function according to claim 1, wherein the protective element is a low resistance body.   2. The extension line device having a neutral line switching function according to claim 1, wherein the protection element is a self-resetting fuse.   The extension device having a neutral line switching function according to claim 1, wherein the light emitter is a neon lamp. It further comprises a plurality of three insertion holes, a live guide plate and a neutral guide plate,
The live wire guide plate, the neutral guide plate, and the ground plate correspond to the three insertion holes, and ground screw holes are provided beside each of the three insertion holes, and are applied to an electrical product including a ground wire. 2. An extension line device having a neutral line switching function according to claim 1. An overload protection switch
The overload protection switch has one end connected to a live wire and the other end connected to a live guide plate.
2. The overload protection switch automatically disconnects the hot wire and the hot wire guide plate when a current passing through the overload protection switch becomes excessive. Extension line device with a sex line switching function. An overload protection switch
The overload protection switch has one end connected to the neutral wire and the other end connected to a neutral guide plate.
2. The overload protection switch automatically disconnects the neutral wire and the neutral guide plate when a current passing through the overload protection switch becomes excessive. Extension wire device with neutral wire switching function. An extension line device having a light emitting device, a resistor and a switch, and having a neutral wire switching function for connecting to a live wire and a neutral wire of a wall outlet by a plug,
The light emitter has one end connected to a measurement point, the other end connected to one end of the resistor,
When the switch is switched to the first position, the switch switches the live line to the measurement point;
When the switch is switched to the second position, the switch switches the neutral line to the measurement point;
An extension wire device having a neutral wire switching function, wherein the neutral wire is switched by the switching device and grounded accurately without inserting or removing the plug. Further comprising a protective element,
11. The neutral of the protective element according to claim 10, wherein one end of the protective element is connected to the measurement point, and the other end is connected to the ground plate to prevent a power surge or an instantaneous large current from passing therethrough. Extension line device with line switching function.   The extension device having a neutral wire switching function according to claim 11, wherein the protection element is a fuse.   The extension device having a neutral wire switching function according to claim 11, wherein the protection element is a low resistance body.   The extension device having a neutral wire switching function according to claim 11, wherein the protection element is a self-resetting fuse.   11. The extension line device having a neutral line switching function according to claim 10, wherein the switch is a slide type switch.   The extension device having a neutral line switching function according to claim 10, wherein the light emitter is a neon lamp.   The extension line device includes a plurality of three insertion holes, the extension line device further includes a live line guide plate, a neutral guide plate, and a ground plane, and the live line guide plate, the neutral guide plate, and the ground plane include the three insertion holes. 11. The neutral wire switching function according to claim 10, wherein a ground screw hole is provided next to each of the three insertion holes and is used for an electrical product having a ground wire. Extension line device. An overload protection switch
The overload protection switch has one end connected to the live wire and the other end connected to a live wire guide plate,
11. The overload protection switch automatically disconnects the live wire and the live wire guide plate when the current passing through the overload protection switch becomes excessive. Extension line device with a sex line switching function An overload protection switch
The overload protection switch has one end connected to the neutral wire and the other end connected to a neutral guide plate.
11. The overload protection switch automatically disconnects the neutral wire and the neutral guide plate when a current passing through the overload protection switch becomes excessive. Extension wire device with neutral wire switching function. A switching device between a power line and a neutral line, which includes a light emitter, a resistor and a switch, and is connected to a live line and a neutral line of a wall outlet by a plug,
The light emitter has one end connected to a measurement point, the other end connected to one end of the resistor,
When the switch is switched to the first position, the switch switches the live line to the measurement point;
When the switch is switched to the second position, the switch switches the neutral line to the measurement point;
A switching device between a power supply line and a neutral line, wherein the neutral line is switched using the switch to accurately ground without inserting or removing the plug.   21. The switching device between a power line and a neutral line according to claim 20, which is installed in an electrical product.

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