JP2004103524A - Alarm display safety outlet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technology for an alarm display safety outlet which recognizes over-current state by visual observation of a user of an electric appliance and eliminates the causes of fire of a building or the like. <P>SOLUTION: A housing 9 is installed on the bottom surface of a plate 3 of the alarm display safety outlet A, and a circuit board 10 on the bottom surface of the housing 9 is mounted with an electric, electronic element group on the top surface 10e, comprising a transformer 5; reverse flow preventing diodes 6a, 6b, and a capacitor 6c as an AC/DC converter; a variable resistor 7a as a current regulator; an overcurrent detecting switch means 7b, and a battery 7c. An alarm display means such as red light emitting lamp or a red light emitting diode is mounted on the top surface of the plate 3. A space is formed on the inside of the housing 9, and when an opening of the bottom of the housing 9 is blocked with the circuit board 10, the electric, electronic element group mounted on the top surface 10e of the circuit board 10 is housed in the space. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a warning display safety outlet characterized in that when the total power consumption of an electric appliance to be used is equal to or more than a predetermined value, a warning is provided by a display means provided in the outlet.
[0002]
[Prior art]
Conventionally, in homes of each home, or in each office, each factory or each business place, outlets are arranged on wall portions of these houses and the like, and various electric appliances and the like used in each home and each factory are installed. The plug was used. In addition, as the number of electric appliances to be used increases, a table tap is connected to the outlet of the outlet, and a person using the electric appliance or the like does not recognize the electric outlet. And plugs of various electric appliances are used, and a large number of electric appliances are inadvertently connected to the outlets on the wall surface of the house or so-called octopus wiring.
[0003]
[Problems to be solved by the invention]
Some conventional outlets are provided with multiple plug holes and a power switch, etc., and the power consumption of the connected electrical appliances varies, so when using various electrical appliances, the There was a dangerous problem that the power consumption exceeded the allowable value, leading to a sudden power failure or fire accident.
[0004]
On the other hand, electric shocks and fires are two major causes of disasters.Electrical line fires account for a high percentage of the occurrence of fires, and the main cause is improper use of electrical equipment, resulting in excessive current in wiring circuits. That is, it is impossible to disconnect the circuit by sensing it in a timely manner, or an outside person cannot recognize the overcurrent state. At present, an extension-only outlet is provided with a device that cuts off power when an excessive current flows. However, it is a mechanical operation system, the sensitivity and effect of the reaction are not ideal, and when using the outlet, consumers may be injured due to carelessness or ignorance, and the load on the outlet For example, a motor, a heater, a cooler, a ventilation fan, a freezer, and the like do not have a protection function of automatically turning off a power supply when leakage occurs due to insulation breakdown.
In addition, when consumers use many electric facilities at the same time, if the current flowing through the circuit increases due to overload or short circuit, for example, if the fuseless switch on the switchboard cannot operate immediately due to poor quality or aging, There was a fear that the power supply jumped off and a fire broke out due to the electric wire igniting.
[0005]
[Means for Solving the Problems]
The present invention includes an outlet plate with warning display means disposed on a wall or the like in a house of each household, and an overcurrent detection unit for detecting an overload connection to the outlet or an overcurrent state is mounted on a lower surface of the outlet plate. A warning display safety outlet characterized by promptly recognizing the overload connection or overcurrent condition to a user of the appliance and prompting the user to remove the appliance from the outlet plate. It is intended to provide, and is constituted by the following configuration and means.
[0006]
According to the first aspect of the present invention, there is provided a plate with a warning display means provided with a desired number of plug holes having an outlet and a plug-in contact, and a load mounted on the lower surface of the plate and connected to the embedded contact. A warning display safety outlet comprising a detection circuit for detecting the presence or absence of an overload and an overcurrent detection unit embedded in a wall of a building.
[0007]
According to the invention of claim 2, a plate with warning display means provided with a desired number of plug holes having outlet plug contacts, a circuit board mounted on the lower surface of the plate, and wiring on the circuit board A warning display safety outlet, comprising: a detection circuit configured to detect the presence or absence of an overload of a load connected to the embedded contact, and an overcurrent detection unit embedded in a wall of a building. .
[0008]
According to the third aspect of the present invention, there is provided the warning display safety outlet according to the second aspect, wherein the overcurrent detection unit forms a case body, and the case body includes a circuit board.
[0009]
According to the fourth aspect of the present invention, in an AC power supply circuit connected through a variety of loads to an outlet plug contact provided in an outlet, a primary winding of a transformer is connected to the AC power supply circuit, and A warning display safety outlet characterized in that a warning display means is provided on a surface of the outlet so that an overcurrent detection means is wired to the secondary winding via an AC / DC converter and a warning is displayed by a signal from the current detection means. It is.
[0010]
According to a fifth aspect of the present invention, the warning display safety outlet according to the fourth aspect, wherein the AC / DC converter is a rectifier circuit and is configured by a connection circuit of a diode and a capacitor.
[0011]
According to a sixth aspect of the present invention, the overcurrent detecting means includes a battery and is constituted by a variable resistor and / or a bimetal type overcurrent detecting switch. Display safety outlet.
[0012]
According to a seventh aspect of the present invention, there is provided the warning display safety outlet according to the fourth aspect, wherein the overcurrent detecting means comprises an overcurrent responsive relay.
[0013]
According to the invention of claim 8, the overcurrent detection means comprises a red warning lamp or a red light-emitting diode, the warning display safety outlet according to claim 1, 2 or 4.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of a warning display safety outlet according to the present invention will be described with reference to the accompanying drawings.
An embodiment of a warning display safety outlet according to the present invention will be described based on the configuration of an electric circuit shown in FIG.
[0015]
As shown in FIG. 1, reference numerals 1a and 1b denote wirings installed around buildings such as homes or offices or factories of each home. For example, a 125 V AC (AC) power supply is provided between the wirings 1a and 1b. Voltage is applied. As shown in FIG. 2, a warning display safety outlet A according to the present invention is connected between the wires 1a and 1b. The warning display safety outlet A is provided with a plate 3, which in FIG. 2 is provided with six plug holes, ie, buried contact holes 3a to 3f, by way of example, in the surface thereof, and the plug holes, ie, the buried holes. Six outlet insertion contacts 4a to 4f corresponding to the contact holes 3a to 3f are embedded in the contact holes 3a to 3f, respectively. One side of the outlet plug contact, that is, the outlet plug contacts 4d to 4f, is used to connect various electrical appliances used in the home or office connected to the wiring 1a, for example, a plug of a vacuum cleaner or the like to the plug contact. When inserted into the holes 3a and 4d, an alternating current (AC) power supply voltage of 125 V is applied to the electric appliance or the cleaner through the plug hole, that is, between the outlet insertion contacts 4a and 4d.
Thus, the vacuum cleaner starts operating. When various electric appliances are connected to the plate 3, the plug holes 3a and 3d, 3b and 3e, and 3c and 3f are integrated, and plugs (not shown) of these electric appliances are inserted. It is a thing.
[0016]
The other side of the outlet plug contact, that is, the outlet plug contacts 4a to 4c, is connected to the wiring 1b via a transformer 5. The transformer 5 comprises a primary winding 5a and a secondary winding 5b wound around an iron core. Specifically, the primary winding 5a having a relatively small number of turns is interposed in the wiring 1b. Let me. The secondary winding 5b having a relatively large number of turns is connected to an AC / DC converter 6 described later.
[0017]
The overcurrent detection unit B includes an AC / DC converter 6, that is, a rectifier circuit, and an overcurrent detection circuit 7 connected to the output side of the AC / DC converter 6. The AC / DC converter 6 comprises a connection circuit of backflow prevention diodes 6a and 6b and a capacitor 6c, and has a function of converting an AC electric signal generated from the secondary winding 5b of the transformer 5 into DC, that is, a function of converting AC. It has the function of converting to direct current and rectifying. The AC / DC converter 6 can also be configured with electronic elements other than the diodes 6a and 6b and the capacitor 6c, for example, a reactance element and the like.
[0018]
The overcurrent detection circuit 7 has a variable resistor 7a as a current regulator, and an overcurrent detection switch 7b and a battery 7c connected thereto. The overcurrent detection switch means 7b is, for example, a bimetal type overcurrent detection switch or an overcurrent responsive relay. Then, when an overcurrent of a predetermined value, that is, 15 (A) or more is supplied to the overcurrent detection circuit 7, the overcurrent detection means 7b turns on.
[0019]
Warning output means 8 is connected to the output side of the overcurrent detection circuit 7, and when an overcurrent of a predetermined value or more flows through the overcurrent detection circuit 7, the overcurrent detection switch means 7b is turned on, The warning display means 8 provided on the surface of the plate 3 is turned on to display a warning indicating that an overcurrent has been applied. The warning display means 8 is composed of, for example, a red indicator light or a red light-emitting diode, and when a user who plugs in the electric appliance into the outlet uses the warning display safety outlet A according to the present invention in an overloaded state. Can be immediately recognized.
[0020]
Next, the operation of the warning display safety outlet according to the embodiment of the present invention will be described.
The user of the various electric appliances inserts the plug of the electric appliance into one of the plug holes provided in the plate 3 of the warning display safety outlet A, that is, one of the embedded contact holes 3a and 3d, if necessary. Thus, the electric appliance, for example, a vacuum cleaner is energized to perform an appropriate operation, thereby completing the cleaning operation. In this case, since the primary winding 5a of the transformer 5 flows a normal current, that is, a current of a predetermined value, for example, 15 (A) or less, the overcurrent circuit 7 does not operate, and the overcurrent detection switch means 7b is turned off. Therefore, the warning display means 8 does not emit light or emit light in the inactive state. Therefore, the person using the electric appliance visually recognizes that the warning display safety outlet is being used within an allowable value.
[0021]
On the other hand, a person using another electric appliance other than the user or the person himself / herself carelessly performs additional use of various electric appliances. 3b and 3e or other embedded contact holes, particularly when using an electric appliance having large power consumption, an excessive current, for example, 15 (A) or more, is applied to the primary winding 5a of the transformer 5. A current having a value flows.
Thus, a large AC current also flows through the secondary winding 5b of the transformer 5, and the AC / DC converter 6 converts the current into a DC current. At this time, the current flowing in the AC / DC converter 6 is smoothed by the capacitor 6c, and the current is flowed in one direction from the positive pole to the negative pole by the backflow prevention diodes 6a and 6b. Then, the current is adjusted by the variable resistor 7a distributed to the output side of the AC / DC converter 6, and the detection switch means 7b at the subsequent stage is energized.
For example, when the detection switch means 7b is a bimetal type overcurrent detection switch, the detection switch means 7b detects an overcurrent signal and extends or bends the bimetal by an energizing operation to perform a switch-on operation and, in the case of an overcurrent detection relay, a relay-on operation. Do.
[0022]
Thus, the warning display means 8 is operated to emit red light by emitting a red lamp or the red light emitting diode, and a person using the electric appliance can use the warning light emitting operation to connect the warning display safety outlet. By visual inspection, the user can immediately recognize the overload connection state, and pull out the plug of the electric appliance from the plug hole, that is, any one of the embedded contact holes 3a and 3d, 3b and 3e, and 3c and 3d of the outlet. It is possible to prevent a fire or the like of a building caused by connection.
[0023]
Next, a specific embodiment of the warning display safety outlet according to the present invention will be described.
[0024]
Embodiment 1
FIG. 2 is a perspective view showing the first embodiment in a case where the configuration shown in the electric circuit of the present invention described above is specifically implemented. In particular, the housing 9 is installed on the lower surface of the plate 3 of the warning display safety outlet A. 2 shows a structure in which a circuit board 10 is mounted on the bottom surface of the housing 9. This will be described, and Example 1 of the present invention will be clarified.
The circuit board 10 is provided on its upper surface 10e with the transformer 5, the backflow prevention diodes 6a and 6b and the capacitor 6c as the AC / DC converter 6, the variable resistor 7a as a current regulator, the overcurrent detection switch means 7b, and the battery. 7c (not shown in FIG. 2) are mounted. Reference numeral 8 in the drawing denotes warning display means such as a red light emitting lamp or a red light emitting diode mounted on the upper surface of the plate 3. The interior of the housing 9 forms a space, and when the circuit board 10 closes an opening at the bottom of the housing 9, a structure for accommodating various electric and electronic element groups mounted on the upper surface 10 e of the circuit board 10. It has become.
[0025]
Engagement holes 9a and 9b (the right side surfaces 9c and 9d are not shown) are formed on the left side surface and the right side surface of the housing 9, and the left and right edges of the circuit board 10 are provided with the holes 9a and 9d. It has protruding edges 10a and 10b engaging with the engaging holes 9a and 9b, and 10c and 10d (not shown). When the circuit board 10 is mounted on the bottom opening of the housing 9, the protruding edges 10a, 10b, 10c and 10d of the circuit board 10 are fitted to the engagement holes 9a, 9b, 9c and 10d by a so-called one-touch method. Push-engage and engage.
FIG. 11 shows screws and the like for fixing the plate 3 of the outlet A to the wall of the building.
As described above, according to the first embodiment, when the detection unit constituted by the electric or electronic element breaks down, it can be easily removed or replaced with a new one.
Another feature is that mass production is possible by standardizing the design of outlets to be attached to houses and other buildings.
[0026]
The other components, operations and functions of the first embodiment of the present invention have been described in the section of the embodiment of the present invention.
[0027]
Embodiment 2
FIG. 3 is a vertical sectional view showing a second embodiment in the case where the above-described configuration showing the electric circuit of the present invention is specifically implemented. In particular, the circuit board 10 is mounted on the lower surface of the plate 3 of the warning display safety outlet A. FIG. 2 shows a structure in which an overcurrent detection unit B composed of a group of electric and electronic elements is mounted directly on the circuit board 10. This will be described in further detail to clarify Embodiment 2 of the present invention.
In the second embodiment of the present invention, a closed casing 9 is provided on the lower surface of the circuit board 10, and a group of electric and electronic elements mounted on the circuit board 10 is accommodated in the casing 9. In the drawing, reference numeral 12 denotes a wall surface of a house, a building, or the like. After the housing 9 is inserted into the recess 12a of the wall surface 12, the plate 3 and / or the circuit board 10 are joined and fixed.
In the second embodiment, the circuit board 10 is directly joined to the lower surface of the plate 3 of the warning display safety outlet A. However, the plate 3 is omitted, and the circuit board 10 itself is used as an outlet plate. It is also possible to reduce the number of parts and man-hours.
[0028]
The other components of the second embodiment of the present invention, and the operations and functions thereof, have been described in the section of the embodiment of the present invention, and thus are denoted by the same reference numerals and symbols, and description thereof will be omitted.
【The invention's effect】
The warning display safety outlet according to the present invention has the following effects since it has the above-described configuration and operation.
In other words, the warning sign on the plate of the outlet left on the wall of the house or office of each household can immediately determine visually whether or not the outlet has been overloaded. This has the effect of preventing fire accidents in advance.
[0029]
In addition, since the overload detection device or the overpower detection device is unitized and detachably attached to the outlet plate, space can be saved, the number of installation steps can be extremely reduced, and electric and electronic components in the unit can be reduced. In the event of a failure of an element or the like, there is an effect that the entire unit can be replaced and the number of repair steps is greatly reduced.
[0030]
In addition, the overcurrent detection unit can have a standard design structure for warning display safety outlets in various buildings, and can be installed and shared with outlets in various factories and offices. This has the effect of facilitating production and realizing mass production.
[0031]
Further, by forming the lower surface of the plate of the outlet or the plate itself on the circuit board, the number of parts and the number of assembling steps can be significantly reduced, and a small and lightweight warning display safety outlet can be provided.
[0032]
In addition, various kinds of miniature red lamps and red light-emitting diodes are configured as the warning display means, which has the effect of improving the visibility and facilitating the operation.
[0033]
Further, since the housing or the unit structure is mounted on the lower surface of the plate, and the housing or the unit structure is fitted into the recess in the wall of the building and the safety outlet is mounted, the outlet and the housing portion protrude. The finish is beautiful, the dust is not mixed, and the mounting is extremely simple.
[0034]
In addition, since the circuit board on which the currents and the electron groups constituting the overcurrent unit are mounted is detachably mounted in the bottom opening of the housing on the lower surface of the outlet by a so-called one-touch method, assembly is easy, and the circuit is easily mounted. There is an effect that the replacement of the substrate itself is facilitated.
[Brief description of the drawings]
FIG. 1 is an electric circuit configuration diagram showing an embodiment of a warning display safety outlet according to the present invention.
FIG. 2 is a perspective view showing Embodiment 1 as a specific example of the warning display safety outlet according to the present invention.
FIG. 3 is a vertical sectional view showing a second embodiment as a specific example of the warning display safety outlet according to the present invention.
[Explanation of symbols]
1a, 1b Wiring 2 Alternating current (AC) power supply voltage 3 Plates 3a to 3f Plug holes 4a to 4f Outlet plug contact 5 Transformer 5a Transformer primary winding 5a Transformer secondary winding 6 AC / DC converters 6a, 6b Backflow Prevention diode 6c Capacitor 7 Overcurrent detection circuit 7a Variable resistor 7b Overcurrent detection switch means 7c Battery 8 Warning means 9 Housing 9a, 9b, 9c, 9d Engagement hole 10 Circuit board 10a, 10b, 10c, 10d Projecting edge 10e Projecting edge upper surface 11 Screw 12 Building wall surface 12a Building wall recess A Warning display safety outlet B Overcurrent detection unit

Claims (8)

An outlet is provided with a desired number of plug holes having plug holes having contact points, and a detection circuit for detecting presence or absence of an overload of a load attached to the lower surface of the plate and connected to the embedded contact. And an overcurrent detection unit embedded in the wall of the building. A plate with warning display means provided with a desired number of plug holes having an outlet plug-in contact, a circuit board mounted on the lower surface of the plate, and a load wired on the circuit board and connected to the embedded contact; A warning display safety outlet comprising a detection circuit for detecting the presence or absence of overload, and an overcurrent detection unit embedded in a wall of a building. The warning display safety outlet according to claim 2, wherein the overcurrent detection unit forms a case body, and the case body includes a circuit board. In an AC power supply circuit connected to an outlet plug contact provided in an outlet via various loads, a primary winding of a transformer is connected to the AC power supply circuit, and an AC / DC converter is connected to a secondary winding of the transformer. A warning display safety outlet, comprising: a warning display unit on the surface of the outlet, which is provided with an overcurrent detection unit via an interface and a warning display unit for displaying a warning by a signal from the current detection unit. The warning display safety outlet according to claim 4, wherein the AC / DC converter is a rectifier circuit, and is configured by a connection circuit of a diode and a capacitor. 5. The warning display safety outlet according to claim 4, wherein said overcurrent detecting means includes a battery and is constituted by a variable resistor and / or a bimetal type overcurrent detecting switch. 5. A warning display safety outlet according to claim 4, wherein said overcurrent detecting means comprises an overcurrent responsive relay. 5. The warning display safety outlet according to claim 1, wherein the overcurrent detecting means comprises a red warning lamp or a red light emitting diode.

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