JPH0674647A - Wiring system for display case - Google Patents

Abstract

PURPOSE:To render splicing operation easy and prevent short-circuit accidents of a power supply by arranging power supply sides and equipment sides of terminal boards right and left, and vertically arranging respective terminals on the terminal boards. CONSTITUTION:A raceway 2 is. provided in front of an insulating wall 4 of a display case 1 to extend right and left, and is provided with terminal boards 30, 31. Vertically arranged on the both terminal boards 30, 31 are power supply side terminals 34 to 36 and 40 to 42 and equipment side terminals 37 to 39 and 40 to 45. Also, the power supply side terminals 34 to 36 and the equipment side terminals 37 to 39 are arranged right and left, and the power supply side terminals 40 to 42 and the equipment side terminals 43 to 45 are arranged right and left. In addition, the both terminal boards 30, 31 are mounted to the raceway 2 such that the power supply side terminals 34 to 36 or 40 to 42 are positioned on a side of a power supply wiring service entrance 3. With this arrangement, electric wires can be connected to the respective terminals laterally of the raceway 2 to render splicing operation easy. Connected to the power supply side terminals 34 to 36 and 40 to 42 are power wires of different electrodes, and the power supply side terminals 34 to 36 and 40 to 42 are spaced from each other with the power supply wiring service entrance 3 therebetween, so that short-circuit accidents can be prevented.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art Conventionally, in this type of showcase, for example, Japanese Utility Model Publication No. 3-44022 (A47F3 / 04).
As shown in Fig. 6, a terminal board (called electric component) is installed on the raceway that is installed in the lower part of the front wall of the heat insulation wall in the left-right direction. It is electrically connected to the wire.

This kind of terminal board is composed of a plurality of power supply side terminals arranged in parallel for connecting power supply lines and a plurality of equipment side terminals arranged for connecting electric devices of a showcase. The terminals on the device side are arranged in two rows corresponding to each other. And the terminal board has its longitudinal direction as the left-right direction,
The equipment side and the power supply side were on the top and bottom, and their terminals were attached to the raceway so that they were arranged side by side.

[0004]

With such a conventional structure, since the terminals on the power supply side and the equipment side of the terminal board face each other in the vertical direction, the power supply wire and the electric wire from the electric equipment are racewayed. Must be connected to the terminals on the power supply side and the equipment side from below or from above. 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 work of connecting the electric wires becomes very difficult.

Further, since the power source side terminals of the terminal board are arranged in close proximity to each other, the power source lines of different polarities are brought into contact with each other at the terminal portion to which the power source lines are connected, or foreign substances such as screws cause different polarities. The danger of an accident in which the power supply side terminals were short-circuited was extremely high, and improvements were expected.

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

Another object of the present invention is to provide a showcase wiring device capable of preventing a power source short circuit accident in a terminal board.

[0008]

That is, the wiring device for a showcase according to the invention of claim 1 is provided with a raceway 2 extending in the left-right direction at the front part of the heat insulating wall 4, and the raceway 2 is provided.
In a showcase 1 for connecting an electric device to a power source, a terminal board 3 provided on a raceway 2 having a plurality of mutually corresponding terminals on the power source side and the device side, respectively.
0 and 31 are provided, and the terminal boards 30 and 31 are characterized in that the power supply side and the device side are in the left-right direction and the respective terminals are arranged in the vertical direction.

In the wiring device for a showcase according to a second aspect of the present invention, the power line lead-in port 3 is formed in the raceway 2, and the pair of terminal plates 30, 31 are provided on both sides of the power line lead-in port 3. And the power supply side terminals of both terminal plates 30 and 31 are set to the power supply line lead-in port side 3.

Further, in the wiring device for a showcase according to a third aspect of the present invention, a raceway 2 extending in the left-right direction is provided in the front portion of the heat insulating wall 4, and in this raceway 2, the electric equipment is connected to a power source. The case 1 has a plurality of terminals on the power supply side and a device side corresponding to each other, and is provided with a plurality of terminal plates 30 and 31 arranged side by side in the longitudinal direction of the raceway 2. Power supply lines of different polarities are connected to the power supply side terminals of 30 and 31, respectively.

[0011]

According to the wiring device for a showcase of the invention of claim 1, since the power source side and the device side of the terminal plates 30 and 31 are in the left-right direction, and the terminals on the power source side and the device side are arranged in the vertical direction, Power lines and electric wires from electric devices can be connected to the terminal boards 30 and 31 from the left-right direction which is the longitudinal direction of the raceway 2.

According to the wiring device for a showcase of the invention of claim 2, a pair of terminal plates 30 and 31 are provided on both sides of the power line lead-in port 3 formed in the raceway 2 in the above, and both terminal plates 30 are provided. , 31 on the power supply side is the power supply line entry port 3
Since it is located on the side, the work of connecting the power supply line drawn from the power supply line drawing port 3 to the power supply side terminals of the terminal plates 30 and 31 becomes extremely easy. In addition, since the terminal plates 30 and 31 are separated from each other with the power supply line inlet 3 interposed therebetween, both terminal plates 3
By connecting the power supply lines of different polarities to 0 and 31, it becomes possible to prevent the occurrence of a short circuit accident of these power supply lines.

Furthermore, according to the wiring device for a showcase of the third aspect of the present invention, a plurality of terminal plates 30 and 31 are arranged side by side in the longitudinal direction of the raceway 2, and the power source side terminals of the terminal plates 30 and 31 are arranged. Since the power supply lines having different polarities are connected to the terminals, the terminals to which the power supply lines having different polarities are connected can be separated from each other, and it is possible to prevent contact between electric wires and a short-circuit accident due to foreign matter.

[0014]

Embodiments of the present invention will now be described with reference to the drawings. 1 is a front view of a raceway 2 of a showcase 1 to which the present invention is applied, FIG. 2 is a front view of the showcase 1, and FIG.
Is a vertical side view of the showcase 1, and FIG.
It is an enlarged front view of the raceway 2 of a part. 2 and 3, the showcase 1 is a low-temperature showcase of a so-called reach-in type, and a partition plate 6 is provided inside a box-shaped heat insulating wall 4 having an opening at the front to form a cool air passage 7 on the heat insulating wall 4 side. , And the storage chamber 8 inside thereof is partitioned and formed. A cooler 9 included in the refrigerating device, a blower 11 and a defrosting heater 12 are arranged in the lower cool air passage 7, and the upper and lower front ends of the cool air passage 7 are a cold air discharge port 13 and a cold air suction port 1.
4 communicates with the storage room 8. The cool air cooled by the cooler 9 is raised in the cool air passage 7 by the blower 11 and discharged from the cool air discharge port 13 into the storage chamber 8, and the cool air circulated in the storage chamber 8 is discharged from the cool air suction port 14. It is sucked into the cold air passage 7. Thereby, the inside of the storage chamber 8 is cooled to a predetermined refrigerating temperature.

A plurality of shelves 16 are erected in the storage chamber 8 and a front opening of the shelves 16 is openably and closably closed by sliding doors 17, 17. In addition, fluorescent lamps 18 for illumination are vertically installed on both sides of the front opening in the storage chamber 8. Further, a front plate 19 is mounted on the front edge of the upper edge of the heat insulating wall 4 above the doors 17 and 17 so as to extend across the left and right, and is positioned between the front plate 19 and the heat insulating wall 4 to form a raceway. 2 are 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 whose upper and lower edges are bent forward and inward, and a temperature control knob 21 and a fluorescent lamp switch 2 are provided on the right side of the front surface.
2, the dew-proof heater switch 23 and the defrosting indicator lamp 24 of the cooler 9 are attached, respectively, and these face the front of the display portion 26 formed on the front plate 19 of the showcase 1. An auxiliary relay 27, a control circuit board 28, and a transformer 29 are mounted on the left side of the front surface of the raceway 2.

The upper edge of the center of the raceway 2 is cut out, and a power line lead-in port 3 is formed therein. Terminal plates 30 and 31 are attached to the front surface of the raceway 2 located on the left and right sides of the power supply line inlet 3 so as to be spaced apart from each other in the longitudinal direction of the raceway 2, and the front surface of the raceway 2 outside the terminal plates 30 and 31. Further, terminal plates 32 and 33 are attached to the. The terminal boards 30, 31, and 32 are, for example, single-phase alternating current 1
The terminal board 33 is, for example, a three-phase alternating current 2
Used for 00V power supply.

The terminal board 30 is, as shown in FIG.
Three power source side terminals 34, 35, 36 from No. 1 to No. 3
And the corresponding numbers 1 to 3 that correspond to them
It has three device side terminals 37, 38, 39 up to No. 3, and the terminal board 31 similarly corresponds to three power side terminals 40, 41, 42 from No. 1 to No. 3 respectively. 3 terminals 1 to 3 that are connected to each other on the device side 4
It has 3, 44 and 45. Also, both terminal boards 30, 3
1 is the power supply side terminals 34, 35, 3 from the first to the third
6, or 40, 41, 42 are vertically arranged, and at the same time, the device-side terminals 37, 38, 39 or 43, 44, 45 of the first to third thereof are vertically arranged vertically, and the power-side terminal 34 , 35, 36 and the device side terminals 37, 38, 39 in the left-right direction, the power supply side terminals 40, 41, 42 and the device side terminal 4
3, 44, 45 are arranged side by side in the left-right direction, and further, both terminal boards 30, 31 are connected to the power supply side terminals 34,
35, 36 or 40, 41, 42 is the power supply line inlet 3
It is attached to Raceway 2 so that it is on the side.
Similarly, the other terminal boards 32 and 33 also have the power supply side terminals and the device side terminals arranged side by side in the vertical direction. Also,
The power supply side terminals 34, 35 and 36 of the terminal boards 30 and 31,
Alternatively, 40, 41 and 42 are used by being short-circuited by a short bar (not shown) in the embodiment.

In the above structure, the power supply line 50 of the single-phase AC 100V power supply AC shown in FIG. 5 is drawn from the power supply line inlet 3, and the power supply line 51 on the active electrode side thereof is connected to, for example, the terminal board 3.
The power source line 52 on the side of the ground electrode is connected to the first power source side terminal 40 of the terminal plate 31. At this time, the power supply side terminals 34 and 35 of both terminal boards 30 and 31,
Since 36, or 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 lateral direction which is the longitudinal direction of the raceway 2, and the connection work becomes easy. . Further, since the power supply side terminals 34, 35, 36 or 40, 41, 42 of both terminal boards 30, 31 are located on the power supply line inlet port 3 side, the power supply line 50 is drawn from the power source wire inlet port 3. After that, since it suffices to just divide the connection into the left and right parts and connect them, the power supply line 50 can be easily routed, and this also improves the workability of connecting the power supply lines.
Further, the power supply side terminals 34, 35, 36 and the power supply side terminal 4
0, 41, 42 are connected to power supply lines having different polarities (active electrode side and ground electrode side), and these are connected to the power supply line inlet 3
Since they are separated with the power supply terminals of different polarities in contact with each other and the screws or the like falling, the power supply side terminals 34, 35, 3
6 and the power supply side terminals 40, 41, 42 can be reliably prevented from occurring.

Next, for example, one electric wire 53 from 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 lamp switch 22.
In addition, the other electric wire 54 is connected to the first device-side terminal 43 of the terminal board 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, the fork terminal of each electric wire from the fluorescent lamp 18 can be connected to each terminal from the lateral direction which is the longitudinal direction of the raceway 2. Connection work becomes easy. Further, the device side terminals 37, 38, 39 and the device side terminals 43, 44, 45
Is located on the opposite side of the terminal plates 30 and 31 from the power supply line inlet 3, so that it is possible to reliably prevent occurrence of a short circuit accident on the device side due to the electric wires 53 and 54 contacting each other. .

In the embodiment, the terminal plates 30 and 31 are used for the single-phase AC 100 power supply AC, but the invention is not limited thereto.
It can be used for a three-phase AC power supply. In that case,
Any two phases of the R phase, the T phase, and the S phase may be used separately for the terminal plate 30 and the terminal plate 31. Further, in the embodiment, the power supply side terminals 34, 35, 36 and the power supply side terminals 40, 4
Although 1 and 42 are short-circuited and used, the terminals may be independently used for different power supplies without short-circuiting. Further, in the embodiment, the terminal plate is provided on the raceway 2 provided on the heat insulating wall 4 of the reach-in type showcase, but the present invention is not limited to this, and is applied to a raceway provided on the lower portion of the heat insulating wall of a so-called open showcase. It doesn't matter.

[0022]

As described above in detail, according to the invention of claim 1, the terminals on the power supply side and the device side of the terminal board are in the left-right direction, and the terminals on the power supply side and the device side are arranged in the vertical direction. It becomes possible to connect the power line and the electric wire from the electric device to the terminal board from the left-right direction which is the longitudinal direction of the raceway, and the electric wire connection work becomes extremely easy.

According to the second aspect of the present invention, the terminal plates are provided on both sides of the power supply line inlet formed in the raceway, and the power source side terminals of both terminal plates are located on the power source line inlet side. Therefore, the work for connecting the power supply line drawn from the power supply line inlet to the power supply side terminal of the terminal board becomes extremely easy. Especially, since the terminal boards are separated from each other with the power supply line inlets in between, by connecting power supply wires of different polarities to both terminal boards, the occurrence of a short circuit accident of these power supply wires,
Also, it becomes possible to reliably prevent the occurrence of a short circuit accident of the electric wire from the device.

Further, according to the invention of claim 3, a plurality of terminal boards are arranged side by side in the longitudinal direction of the raceway, and power supply lines of different polarities are connected to the power supply side terminals of each terminal board. , The terminals to which the power lines of different polarities are connected are separated,
As a result, it is possible to prevent contact of electric wires and occurrence of a short-circuit accident due to foreign matter such as screws.

[Brief description of drawings]

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

FIG. 2 is a front view of a 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 lead-in port.

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

[Explanation of symbols]

 1 Showcase 2 Raceway 3 Power line inlet 30 Terminal board 31 Terminal board

Claims (3)

[Claims] 1. A plurality of terminals on a power supply side and a device side corresponding to each other in a showcase in which a raceway extending in the left-right direction is provided in a front portion of a heat insulating wall and electric equipment is connected to a power supply in the raceway. And a terminal board provided on the raceway, the terminal board having a power supply side and a device side in a left-right direction, and the respective terminals are arranged in a vertical direction. Wiring device for showcases. 2. A raceway is provided with a power supply line inlet, a pair of terminal plates are provided on both sides of the power supply line inlet, and the power supply side terminals of both terminal plates are on the side of the power supply line inlet. The wiring device for a showcase according to claim 1. 3. A plurality of terminals on a power source side and a device side corresponding to each other in a showcase in which a raceway extending in the left-right direction is provided in a front portion of a heat insulating wall and electric equipment is connected to a power source in the raceway. And a plurality of terminal boards arranged in parallel along the longitudinal direction of the raceway, and power supply lines of different polarities are connected to the power supply side terminals of each terminal board. Case wiring device.