JPH0424788A - Power source connection system for vending machine - Google Patents

Abstract

PURPOSE:To prevent an accident by an abnormal temperature at the power source plug by incorporating a temperature detector in the power source plug, providing a notification device which operates by the signal of this temperature detector, and putting on a thermolabel on the surface of the power source plug. CONSTITUTION:A temperature detector 13 is incorporated into a power source plug 12, a device 14 which sounds an alarm by that signal and a thermolabel 15 on the surface of the power source plug 12 are provided, and is constituted to monitor the abnormal increase of temperature. Thus, the abnormal temperature of the power source plug 12 can be detected and the occurrence of abnormality can be notified by hearing, the fact that the power source plug 12 has elevated to a warning temperature can be notified by sight, and the accident can be prevented by both sound and sight.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a power supply connection for a vending machine that safely supplies electricity to a device that constantly requires a high current value, such as a vending machine. It is related to the device.

(Prior Art) In recent years, many power supply connection devices for vending machines have been used in cup-type vending machines and the like. Hereinafter, an example of the above-mentioned conventional power supply connection device for a vending machine will be described with reference to the drawings. FIG. 4 shows the wiring of a conventional vending machine. 1 is the outer box of a vending machine, and from a part of it,
Power cord 2 is out. A power plug 3 is attached to the tip of the power cord 2 and inserted into a power outlet 4. Reference numeral 5 denotes an earth leakage breaker, which is connected to the other end of the power cord 2. Reference numeral 6 indicates a control unit, which includes a drive unit 7, an ice making unit 8.
Cooling section 9. It is connected to the heating section IO.

Figure 5 is a cross-sectional view of the power plug 3.
1 is connected to a power cord 2.

The operation of the power supply connection device for a vending machine configured as described above will be explained below.

First, the power plug 3 provided at the tip of the power coat 2 protruding from the outer box 1 of the vending machine is inserted into the power outlet 4. As a result, electricity flows to the earth leakage circuit breaker 5, and under the operation control of the control section 6, the drive section 7. Ice making section 8 that makes ice
, a cooling section 9 for cooling the beverage. Alternatively, electricity is supplied to the heating unit 10 that heats the ice. All the electricity at this time flows through the blade 11 which is in contact with the power outlet 4. This is a common sense thing that we experience on a daily basis.

(Problem to be Solved by the Invention) However, in the above configuration, in places where the contact between the power outlet 4 and the blade 11 of the power plug 3 is poor and the holding force is weak, the current close to the allowable current value of the power outlet 4 is always flowing. When this happens, the contact portion between the blade 11 of the power plug 3 and the power outlet 4 generates heat, which has the drawback of causing smoke and ignition in the worst case.

An object of the present invention is to eliminate the above-mentioned drawbacks and prevent accidents caused by poor contact between a power plug and a power outlet. The present invention provides a power connection device for a vending machine.

(Means for Solving the Problems) The power supply connection device for a vending machine of the present invention has a built-in temperature detector in the power plug, a device that issues an alarm based on the signal, and a thermolabel on the surface of the power plug. It is equipped with a configuration that monitors temperature rise.

(Function) The present invention uses the above-described configuration to detect an abnormal temperature of a power plug, and not only audibly informs that an abnormality has occurred, but also visually indicates that the temperature has risen to a warning level using a thermo label attached to the power plug. This will prevent accidents both visually and audibly.

(Embodiment) A power connection device for a vending machine according to an embodiment of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 show the cross section and appearance of a power supply connection device for a vending machine according to an embodiment of the present invention. Components that are the same as those of the prior art are given the same numbers and detailed explanations thereof will be omitted. In FIG. 1, reference numeral 12 denotes a power plug, which has two built-in temperature detectors 13.

Reference numeral 14 denotes an alarm, which is connected to the temperature detector I3 by an electric wire. 15 is a thermo label pasted on the surface of the power plug 12. For example, thermolabels may be ones that change color or display depending on the temperature, and may be already well-known ones.

The operation of the power supply connection device for a vending machine constructed as described above will be explained below with reference to FIGS. 1, 2, and 3. First, Figure 2 is an external view of the power plug.
The temperature of the power plug 12 rises due to the blade 11 of the power plug, and when the temperature reaches a warning temperature, the color tone of the thermo label 15 changes. In this way, first, a visual warning is issued. Next, the temperature sensor I3 built into the power plug 12
works.

The alarm 14 works. This alerts you to an abnormality through your hearing.

As described above, according to this embodiment, the temperature sensor 13 is built into the power plug 12 and the thermo label 15 is pasted on the surface of the power plug 12.

Since heat generation due to poor contact between the blade 11 of the power plug 12 and the power outlet can be detected and reported, accidents can be more reliably prevented.

(Effects of the Invention) According to the present invention, a temperature sensor is built into the power plug,
Providing an alarm that operates on the signal of this temperature sensor,
By pasting a thermo label on the surface of the power plug,
It can prevent accidents caused by abnormal temperatures at the power plug, and its practical effect is a dog.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a power supply connection device for a vending machine according to an embodiment of the present invention, Fig. 2 is an external view thereof, Fig. 3 is a wiring diagram of the device shown in Fig. 1, and Fig. 4 is a conventional vending machine. The electrical wiring diagram of the machine, FIG. 5, is a sectional view of a conventional power supply connection device of a vending machine. 11. Power plug blade, 12. Power plug, 13. Temperature detector, 14. - Alarm, 15 Thermo label.

Claims (1)

[Claims] A power cord coming out of a vending machine, a power plug provided at the tip of the power cord, a temperature detector built into the power plug, and an alarm that operates based on a signal from the temperature detector. and a thermolabel for detecting the surface temperature of the power plug.