JP2951121B2 - Showcase wiring equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiring device for a showcase, in which a raceway extending in the left-right direction is provided at a front portion of a heat insulating wall, and an electric device of the showcase is connected to a power source in the raceway. is there.

[0002]

2. Description of the Related Art Conventionally, in a showcase of this type, as shown in, for example, Japanese Utility Model Publication No. 3-44022 , a terminal plate (with electric parts and This terminal plate electrically connects an electric device such as a refrigerator to a power supply line.

This type of terminal board comprises a plurality of power supply terminals arranged side by side for connecting power supply lines and a plurality of equipment side terminals arranged side by side for connecting electric equipment of a showcase. The terminals on the device side are arranged in two rows corresponding to each other. And the terminal board has the longitudinal direction as the left and right direction,
The device side and the power supply side were mounted up and down, and the terminals were mounted on the raceway such that the respective terminals were arranged side by side.

[0004]

In such a conventional structure, the terminals on the power supply side and the equipment side of the terminal board are vertically opposed to each other. Must be connected from above or below to the terminals on the power supply side and the equipment side. However, since the raceway is long in the left-right direction and the width in the up-down direction is usually narrow, there is a problem that the connection work of the electric wires becomes very difficult.

Further, since the power supply side terminals of the terminal board are juxtaposed and juxtaposed, power supply lines of different polarities come into contact with each other at the terminal portion to which the power supply line is connected, or have different polarities due to foreign matter such as screws. The risk of an accident in which the power supply side terminal is short-circuited is extremely large, and improvements have been made.

The present invention has been made to solve the above-mentioned conventional technical problem, and an object of the present invention is to provide a wiring device for a showcase which facilitates wiring connection work on a raceway.

Another object of the present invention is to provide a wiring device for a showcase which can prevent a short circuit accident of a power supply in a terminal plate beforehand.

[0008]

That is, in the wiring device for a showcase according to the first aspect of the present invention, a raceway 2 extending in the left-right direction is provided at a front portion of the heat insulating wall 4.
In a showcase 1 for connecting an electric device to a power supply at a power line inlet 3 formed on a raceway 2 ,
It has a plurality of terminals on the power supply side and the equipment side that correspond to each other,
Provided on raceway 2 on both sides of power line entrance 3
And a pair of terminal plates 30, 31.
0 and 31 indicate the power supply side and the equipment side as the left and right directions.
Each terminal is arranged in a line in the vertical direction, and both terminal boards
The power supply side terminals 30 and 31 are set to the power supply line entrance 3 side.
It is characterized by that.

A wiring device for a showcase according to the first aspect of the present invention.
According to the above, the power supply side and the device side of the terminal plates 30 and 31 are left and right.
The terminals on the power supply side and the equipment side are lined up in the vertical direction.
So that power lines and wires from electrical equipment
The terminal plates 30 and 3 are arranged in the left-right direction, which is the longitudinal direction of the way 2.
1 can be connected.

In particular, a power line formed on raceway 2
A pair of terminal plates 30 and 31 are provided on both sides of the inlet 3,
Power supply terminals of both terminal boards 30 and 31
Is located, the power drawn from the power line entrance 3
The work of connecting the source wires to the power supply side terminals of the terminal boards 30 and 31
It becomes very easy. In addition, the terminal boards 30 and 31 are connected to the power line.
Since it becomes a shape which is separated by sandwiching the entrance 3, both terminal boards 30,
By connecting power lines of different polarities to
The occurrence of short circuit accidents of these power lines can be prevented.
Become like

The showcase arrangement according to the second aspect of the present invention.
The wire device is a lace extending in the left-right direction at the front of the heat insulating wall 4.
Way 2 is provided.
In the showcase 1 where the power is connected to the power supply
Power supply side and equipment side terminals.
A plurality of terminal boards arranged side by side in the longitudinal direction of the sway 2
And a power supply for each terminal board 30, 31
Power terminals with different polarities should be connected to the side terminals.
And features.

A wiring device for a showcase according to the second aspect of the present invention.
According to the above, the terminal plates 30, 31 are in the longitudinal direction of the raceway 2.
Power supply side of each terminal board 30, 31
Since the power lines with different polarities are connected to the terminals,
The terminals to which power lines of different polarities are connected can be separated.
To prevent electric wire contact and short circuit accidents due to foreign matter.
I will be able to.

[0013]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a showcase 1 to which the present invention is applied.
2 is a front view of the showcase 1, FIG. 3 is a vertical side view of the showcase 1, and FIG. 4 is an enlarged front view of the raceway 2 at the power line inlet 3. As shown in FIG.
2 and 3, the showcase 1 is a so-called reach-in type low-temperature showcase, in which a partition plate 6 is provided inside a box-shaped heat-insulating wall 4 opened to the front and a cold air passage 7 on the heat-insulating wall 4 side. , And a storage room 8 on the inside thereof is formed. A cooler 9 included in the refrigerating apparatus, a blower 11 and a heater 12 for defrosting are disposed in the lower cool air passage 7. It communicates with 8. Cooler 9
The cool air cooled by the blower 11 is
Inside, the cold air is discharged from the cool air discharge port 13 into the storage room 8, and the cool air circulated in the storage room 8 is sucked into the cool air passage 7 from the cool air suction port 14. Thereby, the inside of the storage room 8 is cooled to a predetermined refrigeration temperature.

A plurality of shelves 16 are provided in the storage room 8, and the front opening thereof is closed by sliding doors 17, which can be opened and closed. In addition, fluorescent lamps 18 for illumination are mounted vertically on both sides of the front opening in the storage room 8. Further, a front plate 19 is attached to the front end of the upper edge of the heat insulating wall 4 above the doors 17 and 17 across the left and right, and a raceway is located between the front plate 19 and the heat insulating wall 4. 2 is attached to the front of the heat insulating wall 4 across the left and right.

As shown in FIG. 1, the raceway 2 is a long steel plate having upper and lower edges bent forward and inward.
2. A dew-proof heater switch 23 and a defrosting indicator lamp 24 of the cooler 9 are attached, respectively, and they face forward from a display unit 26 formed on the front panel 19 of the showcase 1. In addition, an auxiliary relay 27, a control circuit board 28, and a transformer 29 are mounted on the front left side of the raceway 2, respectively.

A substantially central upper edge of the raceway 2 is cut out, and a power supply line entrance 3 is formed therein. Terminal plates 30 and 31 are attached to the front of the raceway 2 located on both left and right sides of the power line inlet 3 so as to be separated from each other in the longitudinal direction of the raceway 2, and the front of the raceway 2 outside the terminal plates 30 and 31. Are further attached with terminal plates 32, 33. The terminal plates 30, 31, and 32 are, for example, single-phase AC 1
The terminal plate 33 is, for example, a three-phase AC 2
Used for 00V power supply.

The terminal plate 30 is shown in an enlarged manner in FIG.
Three power supply side terminals 34, 35, 36 from No. 1 to No. 3
And the first to third conducting respectively corresponding to them
And three terminal-side terminals 37, 38, and 39, and the terminal board 31 also has three power-supply-side terminals 40, 41, and 42 corresponding to the first through third terminals, respectively. No. 1 to No. 3 device side terminals 4 that are conducting
3, 44, and 45. In addition, both terminal boards 30, 3
1 is the first to third power supply side terminals 34, 35, 3
6, or 40, 41, and 42 are arranged vertically, and at the same time, the first to third device-side terminals 37, 38, 39 or 43, 44, and 45 are vertically arranged vertically, and the power-supply-side terminals 34 are arranged. , 35, 36 and the device-side terminals 37, 38, 39 in the horizontal direction, and the power-supply-side terminals 40, 41, 42 and the device-side terminal 4
3, 44 and 45 are arranged side by side in the left and right direction.
35, 36 or 40, 41, 42 is the power line inlet 3
It is attached to raceway 2 so as to be on the side.
The other terminal boards 32 and 33 are similarly provided with the power supply terminals and the equipment terminals arranged vertically. Also,
The power supply side terminals 34, 35 and 36 of the terminal plates 30, 31;
Alternatively, 40, 41 and 42 are short-circuited by a short bar (not shown) in the embodiment.

In the above configuration, the power supply line 50 of the single-phase AC 100 V power supply AC shown in FIG.
0 and the power supply line 52 on the ground electrode side is connected to the first power supply side terminal 40 of the terminal plate 31. At this time, the power supply side terminals 34, 35 of both terminal plates 30, 31
Since 36, 40, 41, and 42 are arranged in the vertical direction, the fork terminals of each power supply line can be connected to each terminal from the horizontal direction, which is the longitudinal direction of the raceway 2, and the connection work is facilitated. . Also, since the power supply side terminals 34, 35, 36 or 40, 41, 42 of both terminal boards 30, 31 are located on the side of the power supply line entrance 3, the power supply line 50 is drawn in from the power supply line entrance 3. Then, since it is only necessary to divide the power supply line into the left and right sides and connect the power supply line 50, it is easy to manage the power supply line 50, which also improves the workability of connecting the power supply line.
Further, the power supply terminals 34, 35, and 36 and the power supply terminal 4
0, 41, and 42 are connected to power supply lines having different polarities (the active electrode side and the ground electrode side).
Are separated from each other, so that power lines of different polarities come into contact with each other, or the power supply side terminals 34, 35, 3
6 and the occurrence of a short circuit accident between the power supply side terminals 40, 41, 42 can be reliably prevented.

Next, one electric wire 53 from, for example, the fluorescent lamp 18 as an electric device of the showcase 1 is connected to the first device side terminal 37 of the terminal plate 30 via the fluorescent light switch 22.
The other electric wire 54 is connected to the first device side terminal 43 of the terminal plate 31.
Connect to The electric circuit in this case is shown in FIG. Also at this time, the device-side terminals 37 of both terminal boards 30 and 31
Since 38, 39, or 43, 44, 45 are arranged in the vertical direction, fork terminals of each electric wire from the fluorescent lamp 18 can be connected to each terminal from the horizontal direction, which is the longitudinal direction of the raceway 2, Connection work becomes easy. Also, the device side terminals 37, 38, 39 and the device side terminals 43, 44, 45
Is located on the opposite side of the power supply line entrance 3 of the terminal plates 30 and 31, so that occurrence of a short circuit accident on the device side due to the mutual contact of the electric wires 53 and 54 can be surely prevented. .

In the embodiment, the terminal plates 30 and 31 are used for a single-phase AC 100 power source AC.
It can be used for a three-phase AC power supply. In that case,
Any two phases of the R phase, T phase, and S phase may be used separately for the terminal plate 30 and the terminal plate 31. In the embodiment, the power supply terminals 34, 35, 36 and the power supply terminals 40, 4
Although the terminals 1 and 42 are short-circuited, each terminal may be used independently for a different power source without short-circuiting. Furthermore, in the embodiment, the terminal plate is provided on the raceway 2 provided on the upper part of the heat insulating wall 4 of the reach-in type showcase. No problem.

[0021]

As described above in detail, according to the first aspect of the present invention, the terminals on the power supply side and the equipment side of the terminal board are in the horizontal direction, and the terminals on the power supply side and the equipment side are arranged in the vertical direction. In addition, the power supply line and the electric wires from the electric equipment can be connected to the terminal plate from the left and right directions that are the longitudinal direction of the raceway, and the electric wire connection work becomes extremely easy.

In particular, the power line formed on the raceway
Terminal plates are provided on both sides of the entrance, and the power supply side terminals of both terminal plates
Is located on the power line inlet side.
Connect the power line drawn from the terminal to the power terminal on the terminal board
Work becomes extremely easy. In particular, the terminal board is
The terminal boards are separated from each other.
By connecting the power lines, the shortness of these power lines
Of electrical accidents and short-circuits of electric wires from equipment.
Prevention can be surely prevented.

According to the second aspect of the present invention, the terminal plate is
Multiple terminals are arranged in parallel along the length of the raceway.
Connect power lines of different polarities to the power side terminal of the board.
As a result, the terminals to which power lines of different polarities are connected are separated,
As a result, contact of electric wires or short-circuiting due to foreign matter such as screws
What can prevent accidents from occurring
It is.

[Brief description of the drawings]

FIG. 1 is a front view of a raceway of a showcase to which a wiring device according to the present invention is applied.

FIG. 2 is a front view of the showcase.

FIG. 3 is a vertical sectional side view of the showcase.

FIG. 4 is an enlarged front view of a raceway at a power line entrance.

FIG. 5 is an electric circuit diagram in which a fluorescent lamp is connected to a terminal plate.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Showcase 2 Raceway 3 Power inlet 30 Terminal board 31 Terminal board

Claims (2)

(57) [Claims] 1. A showcase in which a raceway extending in the left-right direction is provided at a front portion of a heat insulating wall, and an electric device is connected to a power source at the raceway.
Power supply line entrance formed in
And a plurality of terminals on the device side, both sides of the power line inlet
A pair of terminal plates provided on the raceway in
And the terminal boards are connected to the power supply side and the equipment side in the horizontal direction.
And when the terminals are arranged in the vertical direction
In both cases, the power supply side terminals of both terminal boards are
Wiring apparatus of the showcase, wherein the being. 2. A ray extending in the left-right direction at the front of the heat insulating wall.
Sway is provided, and electrical equipment is
In a showcase connected to a power source,
It has a plurality of terminals on the source side and the equipment side, respectively.
A plurality of terminal boards arranged side by side in the longitudinal direction of the sway
The power supply terminals of each terminal board have different polarities.
A wiring device for a showcase to which a power supply line is connected .