JP3947124B2 - Wiring connection structure in electrical equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a connection structure between wiring connected to a case body side of an apparatus in an electric device such as a refrigerated showcase and wiring connected to a power source outside the case body.
[0002]
[Prior art]
For example, as shown in FIG. 4, a freezer / refrigerated showcase as an electrical device has an opening 2 for putting in and out a product on the upper surface as shown in FIG. The product storage 4 and the cold air circulation duct 5 are partitioned, and the cooler 6 and the blower 7 are disposed in the cold air circulation duct 5. In the figure, 12 indicates a defrost heater for defrosting the cooler 6, and 8 indicates a drain hole for discharging drain water.
[0003]
A machine room 9 is provided at the bottom of the showcase body 1, and a compressor 10 and a blower 11 are disposed in the machine room 9.
[0004]
In order to operate the refrigerated showcase as described above, the cooler 6 is operated, the air taken into the cold air circulation duct 5 is cooled by the blower 7, and the product is discharged from the cold air outlet at the upper end of the cold air circulation duct 5. The product is supplied into the storage 4 to cool the product in the storage, and the cold air after heat exchange is sucked again from the suction port at the lower end and cooled by the cooler 6.
[0005]
And the frost adhering to the cooler 6 heats the cooler 6 by energizing the defrost heater 12, and the drain water is discharged from the drain hole 8 to the outside of the showcase.
[0006]
By the way, in the product storage 4, scraps from the products displayed in the store, toothpicks for tasting, and the like have fallen, and when these wastes are discharged together with the drain water, the drain hole 8 can be seen. Clogging occurs.
[0007]
Therefore, the inside of the showcase main body 1 is cleaned. This cleaning is performed by using the automatic cleaning machine to perform the entire interior of the cabinet. For this reason, if water adheres, there is a risk of insulation failure and the blower 7 that dislikes water removes it from the showcase body 1 during cleaning.
[0008]
And the arrangement | positioning which connected the air blower 7 to a power supply etc. so that removal of the air blower 7 is possible is connected to the wiring 13 connected to the air blower 7 side, and the power supply etc. side, as shown in FIG. The wiring 14 is connected with a waterproof connector 15 in the showcase body 1, and the waterproof connector 15 is configured by, for example, a combination of a male part 15 a attached to the blower 7 side and a female part 15 b attached to the power source side. The
[0009]
In order to remove the blower 7 from the showcase body 1, the male portion 15a and the female portion 15b of the waterproof connector 15 are separated, and the blower 7 is attached to the showcase body 1 with the wiring 13 and the male portion 15a attached. Remove the fan guide 17 from each.
[0010]
On the other hand, on the showcase body 1 side, the wiring 14 connected to the power source side and the female portion 15b attached to the tip of the wiring remain, but when cleaning the inside of the cabinet, the wiring 14 has water from the location of the female portion 15b. 7, a waterproof connector insulation cap 16 having the same structure as the male portion 15b as shown in FIG. 7 is prepared separately, and this waterproof connector insulation cap 16 is connected to the tip of the wiring 14 as shown in FIG. It couple | bonds with the female part 15b attached to.
[0011]
This prevents water from being applied to the tip of the wiring 14 when cleaning the inside of the cabinet, thereby preventing poor insulation.
[0012]
The prior art is generally performed by those skilled in the art, and does not relate to a known literature.
[0013]
[Problems to be solved by the invention]
As described above, since the waterproof connector insulation cap 16 is conventionally used as means for preventing water from being applied to the wiring 14 left on the showcase body 1 side, it is necessary to prepare the waterproof connector insulation cap 16 separately. In addition to increasing the number of parts, a storage place for these parts is also required.
[0014]
Further, if the location of the waterproof connector insulating cap 16 becomes unknown due to the storage location becoming unknown or the waterproof connector insulating cap 16 being lost, the wiring 14 may not be waterproofed. If stored in the cabinet, the risk of loss is reduced, but there is a risk of water splashing during storage.
[0015]
The object of the present invention is to eliminate the inconvenience of the conventional example, and in the case of taking a refrigerator-freezer showcase as an example of an electric appliance, when the fan is removed from the fan guide and the interior is cleaned, it is left on the showcase body side. The waterproof connector wiring can be prevented from getting wet without the need for a separate waterproof connector insulation cap. An object of the present invention is to provide a wiring connection structure in an electrical apparatus that can improve the above.
[0016]
[Means for Solving the Problems]
In order to achieve the above object, according to the present invention, firstly, the wiring connected to the electric equipment side and the wiring connected to the power supply side are separated, and both wirings are waterproof connectors in the case main body of the electric equipment. In the wiring connection structure to be connected, the number of waterproof connector connecting portions is an even number, and two of them are waterproof connectors as a combination of male and female of the same type. A half is attached, and the remaining half of the male part and the female part are attached to the wiring on the power source side. In addition, three types of waterproof connectors, one pole, two poles, and three poles, are currently generally used.
[0017]
Thus, if the wiring connected to the electrical equipment side and the wiring connected to the power supply side are separated at the waterproof connector connection portion at the time of cleaning the inside of the cabinet, it is attached to the wiring left on the case body side of the electrical equipment There are an even number of waterproof connectors, and half of the male and female parts of the same type exist, so if these male and female parts are combined and combined, the waterproof connector insulation cap can be used as before. The wiring can be reliably waterproofed without being prepared separately.
[0018]
Second, an even number of waterproof connector connection portions are provided for an odd number of wires.
[0019]
As a result, even if there are an odd number of wires left on the showcase body side when cleaning the inside of the cabinet, the waterproof connector will be an even number with the addition of dummy parts, so there must be half the male part and the female part. The male part and the female part can be combined and combined.
[0020]
Third, at least twice as many waterproof connector connection portions are provided for an even number of wires. As a result, when combining male and female parts so that the different phases do not come into contact with each other, even if power is accidentally turned on with the wiring remaining in the cabinet waterproofed, a short circuit accident or the like may occur. The occurrence of defects can be avoided.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is an explanatory view of a blower which is a main part showing an embodiment of a wiring connection structure in an electric device of the present invention and a wiring portion to the blower. In the figure, the same configuration as the conventional example shown in FIGS. Elements are given the same reference numerals.
[0022]
Since the entire structure of the freezer / refrigeration showcase which is an example of the electric apparatus in which the present invention is implemented is as already described with reference to FIG. 5, detailed description thereof will be omitted here. In the present invention, as in the prior art, the blower 7 is connected to a power source or the like so that the blower 7 disposed in the cold air circulation duct 5 can be removed when the showcase body 1 is cleaned in the cabinet. In the showcase body 1, the wiring 13 connected to the blower 7 side and the wiring 14 connected to the power source side are connected by a waterproof connector 15.
[0023]
In this case, in the present invention, the number of the wirings 13 and 14 is set to an even number, and two waterproof connectors 15 attached to the tips of the respective wirings 13 and 14 are the same type, and a combination of the male part 15a and the female part 15b. For example, half of the male part 15a and female part 15b are attached to the blower 7 side, and the remaining half of the male part 15a and female part 15b is attached to the power source side.
[0024]
In the example shown in the figure, the wiring 13 and the wiring 14 are two even numbers, and the waterproof connectors 15 on the wiring 13 and wiring 14 side are one male part 15a and one female part 15b, respectively, and the male part on the wiring 13 side. 15a and the female part 15b are connected to the female part 15b and the male part 15a on the wiring 14 side, respectively.
[0025]
At the time of cleaning in the cabinet, as shown in FIG. 2, the male part 15a and the female part 15b of the waterproof connector 15 are disconnected, the wiring 13 and the wiring 14 are separated, and the blower 7 is removed from the showcase body 1 for each fan guide 17. Remove. At this time, the wiring 13 is removed together with the blower 7.
[0026]
Two even-numbered wires 14 remain on the showcase body 1 side, and a male portion 15a and a female portion 15b of a waterproof connector 15 are attached to the tip thereof. Therefore, as shown in FIG. 2, the male part 15a and the female part 15b at the tip of the wiring 14 are connected, and the wirings 14 are connected to make the wiring 14 waterproof. It should be understood by those skilled in the art that the power is turned off during maintenance and service such as cleaning inside the cabinet.
[0027]
When the number of wirings 13 and 14 is an odd number (three in the illustrated example), two waterproof connectors 15 for a plurality of wires (two wires) are used as shown in FIG. , 14 are divided into two and one, the two wirings 13 and 14 are connected by one waterproof connector 15, and the remaining one wiring 13 and 14 is connected to another multiple-line (two-wire) waterproof connector. Connect at 15.
[0028]
In this case, the waterproof connector 15 to which the remaining one of the wirings 13 and 14 is connected has an empty male part and female part where no wiring is connected, so this is used as a dummy. In addition, the dummy part has been waterproofed in advance.
[0029]
Further, if one set of two wires 13 on the blower 7 side is connected to the male portion 15a, the remaining one wire 13 is connected to the female portion 15b, and two wires 14 on the power source side are one. If the pair of members is connected to the female portion 15b, the remaining one wiring 14 is connected to the male portion 15a.
[0030]
At the time of cleaning the inside of the cabinet, as shown in FIG. 3B, the male part 15a and the female part 15b of the two waterproof connectors 15 are disconnected, the wiring 13 and the wiring 14 are separated, and the blower 7 is replaced for each fan guide 17. Remove from the showcase body 1. At this time, the wiring 13 is removed together with the blower 7.
[0031]
Three odd-numbered wires 14 remain on the showcase body 1 side, and two female portions 15b of the waterproof connector 15 are attached to the ends of the two wires 14, and the remaining one wire Although there is one wiring 14 at the tip of the wiring 14, two male portions 15a including a dummy are attached.
[0032]
Therefore, the two male portions 15a and the female portions 15b at the tip of the wiring 14 are connected, and the wiring 14 is connected to make the wiring 14 waterproof. In this way, even if the number of the wirings 13 and 14 is an odd number, the wirings 14 on the showcase body 1 side can be connected to each other by providing a dummy portion.
[0033]
FIG. 4 shows the third embodiment. Like the first embodiment, the wiring 13 and the wiring 14 are two even numbers, but the two wirings 13 and 14 are the same as those in the first embodiment. Instead of connecting each one to the one-pole waterproof connector 15 as in the case, it is connected to the two-pole waterproof connector 15 having twice the number of poles, and the empty poles that are not connected are used as dummy parts. Apply waterproof insulation.
[0034]
At the time of cleaning the inside of the cabinet, the two wires 14 remaining on the showcase body 1 side are connected as shown in FIG. 4B, but the wires 14 are connected so that the phases of the wires 14 do not contact each other. The opposite side is connected so that a dummy portion is arranged. As a result, it is possible to prevent problems such as a short-circuit accident from occurring when the power supply is mistakenly turned on with the wiring 14 left in the cabinet being waterproofed.
[0035]
【The invention's effect】
As described above, the wiring connection of the electrical equipment of the present invention is, for example, a freezer / refrigeration showcase as an electrical equipment. Since the waterproof connector of the waterproof connector-attached wiring is attached so that the male part and the female part are combined, by connecting these male part and female part, the waterproof connector insulation cap Can be prevented without having to prepare separately, and it is possible to avoid the situation where water splashing cannot be prevented due to the loss of the waterproof connector insulation cap, etc., thereby preventing the occurrence of poor insulation and improving safety. .
[Brief description of the drawings]
FIG. 1 is an explanatory view on the plane side of a connection state of a waterproof connector in a blower installation state showing a first embodiment of a wiring connection structure in an electric apparatus of the present invention.
FIG. 2 is an explanatory view on the plane side of the connected state of the waterproof connector in the blower removed state, showing the first embodiment of the wiring connection structure in the electric apparatus of the present invention.
FIG. 3 is an explanatory view on the plane side showing a second embodiment of the wiring connection structure in the electric apparatus of the present invention.
FIG. 4 is an explanatory view on the plane side showing a third embodiment of a wiring connection structure in an electric apparatus of the present invention.
FIG. 5 is a vertical side view of a freezer / refrigerated showcase.
FIG. 6 is an explanatory view on the plane side of a connection state of a waterproof connector in a blower installation state showing a wiring connection structure in a conventional electric device.
FIG. 7 is an explanatory view on the plane side of a connection state of a waterproof connector in a blower removed state showing a wiring connection structure in a conventional electric device.
FIG. 8 is a front view of a waterproof connector insulating cap used in a wiring connection structure in a conventional electric device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Showcase body 2 Opening 3 Duct plate 4 Commodity storage 5 Cold air circulation duct 6 Cooler 7 Blower 8 Drain hole 9 Machine room 10 Compressor 11 Blower 12 Defrost heater 13 Wiring 14 Wiring 15 Waterproof connector 15a Male part 15b Female part 16 Waterproof connector insulation cap 17 Fan guide

Claims (3)

In the wiring connection structure in which the wiring connected to the electric equipment side and the wiring connected to the power supply side are separated and both wirings are connected by a waterproof connector in the case body of the electric equipment, an even number of waterproof connector connection portions are provided. And two of them are waterproof connectors as a combination of male and female of the same type, half of male and female parts are attached to the electrical equipment side wiring, and male and female parts are attached to the power supply side wiring. A wiring connection structure in an electrical device, wherein the remaining half of each of the above is attached. 2. The wiring connection structure in an electric device according to claim 1, wherein an even number of waterproof connector connection portions are provided for an odd number of wires. 2. The wiring connection structure in an electric apparatus according to claim 1, wherein at least twice as many waterproof connector connection portions are provided for an even number of wires.

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