JPS59180981A - Cord connecting device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a cord connecting device that prevents the plug of an electrical device from being unplugged while the device is in use.

Conventional configurations and their problems Conventionally, there has been a connoset with a energization display function that allows you to determine with the naked eye whether or not the cord plug of an electrical device connected to an outlet is being used. This is the first
This will be explained using FIG. Reference numeral 1 denotes a power outlet main body, which has a power outlet 2 and a power indicator lamp 3 on its surface. Figure 2 is a circuit diagram of this power outlet with power display function. The device body 04 is an AC power source, and a galvanometric transformer 5 is arranged in series, and a light emitting diode 6 for indicating energization is connected to the secondary coil 5a side of the galvanic transformer 6.

Reference numeral 7 is provided with a switch 8 that operates the operation according to the load of the electrical equipment. When this switch 8 is closed, the circuit is energized, and the light-emitting diode 6 for indicating energization lights up via the galvanometric transformer 5. In this way, conventional power outlets exist that can determine the energized state. was. However, there are some electric appliances, such as air conditioners, in particular, where unplugging the compressor while it is in operation may cause problems with the compressor. The purpose is to provide a structure that prevents the plug from being accidentally pulled out while the main body is in operation.

SUMMARY OF THE INVENTION In order to achieve the second object, the present invention provides a cord connecting device including a locking means that is provided near a blade holder and can be removably fitted to a plug terminal, and a locking means that connects the locking means to the plug terminal. The device includes an electromagnetic device that is fitted into or separated from the device, and a means for exciting the electromagnetic device when the main body of the device is energized.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. FIG. 3 is a circuit diagram of the same. In the figure, a indicates the power outlet side, and b indicates the main body of the electrical equipment. In FIG. 3, the same parts as in FIG. 2 are given the same numbers and explained.

A transformer 9 is provided in series with a circuit formed when an electric device is connected to an outlet, and a resistor 1o, a diode 11, and a capacitor 12 are provided in series with a secondary coil 9a of the transformer 9. At L7, both ends of the capacitor 12 and the electromagnetic device 13 are connected, and the electromagnetic device 13 and the locking mechanism 14 are connected. Figure 4 shows this power supply connection part 07.
Reference numeral 01 indicates a power supply connector body, and blade holders 15 and 16 are installed inside so as to be fitted with plug terminals 18 of a plug 17. The pawls 19.20 are provided rotatably about the pins 21.22, respectively, and the electromagnetic plates 23.24 are connected to the pawls 19.20. ．． One end of 20 190.20
It is provided to attract C when the circuit is energized. 26
13 is a power cord, and 13 is an electromagnetic device that magnetizes electromagnetic plates 23 and 24 when energized.

Next, the operation will be explained. Switch 8 on the electrical equipment body
When the is closed, a current flows through the electromagnetic device 13 through the transformer 9, magnetizing the electromagnetic plate 23.24, and the pawl 19.20
One end of 19C, 2QQ is adsorbed. That is, claw 19.
20 rotates with pins 21 and 22 as fulcrums, and pawl 19.
20 other end 19? L20a presses so as to narrow the plug terminal insertion gap of the blade holder 15.16. At this time, the protrusions 19b and 20b provided on the catch 19° 2Q are fitted into holes provided in the plug terminal 18 through holes provided in the blade holder. However, considering the size of the hole in the plug terminal 18, these protrusions 19b, 20b cannot necessarily be fitted, and therefore, the protrusions 19b, 20b are not necessarily fitted in the hole in the plug terminal 18. Also, install it in a place close to the outlet side,
When trying to pull out the plug, plug terminal 1
It is designed to fit into hole 8.

As described above, according to this embodiment, when the switch 8 of the electrical device main body is in the closed state, the outlet will not be pulled out due to the pressure of the claws 19 and 20. The projections 19b and 20b make it impossible to pull out the outlet. Furthermore, since there is no need to make the plug terminal insertion gap extremely narrow in order to eliminate poor contact at the joint, there is an effect that the plug can be easily inserted and removed.

Effects of the Invention As described above, the present invention provides an electromagnetic device for fitting or separating a locking means provided in the vicinity of the blade holder and capable of being removably fitted to the plug terminal into the plug terminal, and By including a means for exciting the electromagnetic device when energized, it is possible to prevent the plug from being accidentally pulled out while the electrical equipment is in operation, thereby causing trouble to the electrical equipment.
Further, by being locked, it is possible to prevent heat generation in the outlet portion due to poor contact, which is an excellent effect.

[Brief explanation of the drawing]

Fig. 1 is an external perspective view of a conventional power outlet 1, Fig. 2 is a circuit diagram thereof, Fig. 3 is a circuit diagram of a cord connecting device according to an embodiment of the present invention, and Fig. 4 is a plan view showing the locking mechanism. FIG. 1...Power outlet main unit, 4...AC power supply, 7...Load of electrical equipment, 8...
Switch, 9...Transformer, 13...
Electromagnetic device, 14...Lock mechanism, 16.16.
...Blade holder, 19,20...Tlaw, 2
3.24... Electromagnetic board. □1. ” 3 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] A plug having a plug terminal, a blade holder into which the plug terminal is removably inserted, a locking means provided near the blade holder and capable of removably fitting into the plug terminal, and a locking means. A cord connecting device comprising: an electromagnetic device that fits into or separates from the plug terminal; and means for exciting the electromagnetic device when the device main body is energized.