JPH0793153B2 - Electrical equipment connection - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection part of an electric equipment .
It relates to overheat detection .

[0002]

2. Description of the Related Art Conventionally, the occurrence of overheat in a low-voltage circuit in an electric facility is often monitored by directly visually inspecting the discoloration of the circuit wiring itself or the test temperature tape. To monitor the occurrence of this overheat, for example, by removing the exterior part of the electrical equipment and exposing the interior, it is possible to directly inspect the state of the circuit wiring and the temperature test tape, so that
There is a demand for an inspection means capable of ensuring certainty without causing oversights and misjudgment and easiness not requiring the work of removing the exterior part.

There is a device utilizing a thermocouple as a device corresponding to such an inspection means.

[0004]

However, in the case of using a thermocouple, there is a problem that the cost is increased and it is necessary to insulate the electric circuit.

The present invention has been made in view of the above problems, and it is an object of the present invention to monitor the occurrence of overheating of an electric equipment by an inspection means having certainty, easiness and insulation. The purpose is to provide a connection for various electrical equipment.

[0006]

In order to achieve the above-mentioned object, the connecting portion of the electric equipment according to the present invention is for electric equipment .
Line up the terminals for connecting the cables to each other.
Corresponding to the terminal block provided in the
It is provided and detects the temperature change of the terminal part
Each temperature sensor whose resistance changes according to temperature changes
And one pair on each side of the terminals on the same side.
Connection terminal provided on one terminal block and the end face of the terminal block
Each temperature sensor is equipped with a conductive wire that connects the terminals.
Cable to both conductive wires in parallel, and a separate
It is characterized in that a connection portion into which the connection terminal of the terminal block can be fitted is provided .

[0007]

In the connection part of the electrical equipment having the above-mentioned structure , the terminal
Heat is generated due to poor contact of the cable connected to the section
And the temperature sensor at this terminal detects overheat and
Change. Each temperature sensor is connected in parallel with a conductive wire.
Change the value of the parallel resistance between the connection terminals on the terminal block.
It

As a result, the terminal block of the connection part of the electric equipment is
The overheating that occurs can be detected. Also, of the terminal block
One pair of connection terminals is fitted with the connection terminals of another terminal block.
A connection part for this electrical equipment is provided.
If you want to increase the number of
It

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of a connecting portion of an electric equipment according to the present invention will be described below with reference to the drawings.

[0010] As shown in FIGS. 1 and 2, contact the electrical equipment
The connection part 10 is a current-carrying part of an electric equipment and forms a terminal block 11 that forms an input / output part, a crimp terminal (current-carrying connection part) 12 that is connected to the terminal block 11 in a conductive state, and a temperature of the crimping terminal 12 while current is flowing. Temperature sensor (temperature detecting means) 13 for detecting, and connection
It has a connecting terminal (connecting means) 14 for continuously connecting the parts 10 to each other in a conductive manner.

In the terminal block 11, the upper surface of the base 15 is divided into a plurality of compartments in the longitudinal direction by a partition wall 16a and a partition wall 16b orthogonal to the partition wall 16a. It is divided into the terminal portions 17 of.
A crimp terminal 12 attached to the tip of a cable ( wiring ) 18 is locked onto the conductive plate 17a by a screw 19 and a plurality of cables 18 are connected to each terminal portion 17 (see FIG. 1).

The crimp terminal 12 forms an energizing path with the energizing portion via the terminal block 11, and the cable 18 and the electric equipment can be energized.

As shown in FIG. 3, the temperature sensor 13 is composed of, for example, a thermistor whose resistance value changes in accordance with a temperature change, and is mounted in a base portion 15 below the conductive plate 17a between a pair of opposing terminal portions 17. It is located and buried in the passed state (see FIG. 2A). The electrode of the temperature sensor 13 has a partition wall 16 located between a pair of opposing terminal portions 17.
It is connected in parallel to both conductive wires 20, 20 which are located below both side portions of b and arranged in parallel in the base portion 15.

Therefore, the temperature change of the crimp terminal 12 is transmitted to the temperature sensor 13 embedded in the base portion 15. That is, the resistance value of one or more temperature sensors 13 is changed.
Then , the parallel resistance value of the temperature sensor 13 connected in parallel becomes
change.

Both ends of the conductive wire 20 are connected to both end faces 1 of the base portion 15.
5a are connected to the connection terminals 14 respectively formed.

The connecting terminal 14 has a convex connecting portion (fitting portion) 2.
1 and a pair of concave connecting portions (fitted portions) 22 that enable fitting with the convex connecting portions 21 and are made of, for example, a conductive material. The convex connecting portion 21 and the concave connecting portion 22 are arranged side by side on one of the both end surfaces 15a, and the concave connecting portion 22 corresponding to the convex connecting portion 21 corresponds to the concave connecting portion 22 on the other side. The convex connection portions 21 are arranged side by side (see FIG. 1) .

Therefore, it is possible to connect the terminal block 11 in a state in which the convex connecting portions 21 and the concave connecting portions 22 are connected in a fitted state and the end faces 15a are connected to each other in series .
At the same time, when connecting the connection portions 10, the temperature sensors 13 can be continuously connected in a conductive manner (see FIG. 4).

The connection terminal 14 is formed of a conductive material, and also forms a connection means that enables the conductive wires 20 to be connected in a conductive state when the convex connection portion 21 and the concave connection portion 22 are connected. It is also possible to adopt a configuration having this connecting means.

Further, the overheat monitoring device 30 of the electric equipment can be formed by using the connecting portion 10 of the electric equipment.

The overheat monitoring device 30 of the electric equipment is such that when the temperature of the crimp terminal 12 exceeds the set temperature by inputting the detection information of the connection portion 10 of the electric equipment, the overheated state, and the temperature sensor 13. It has actuating means 32 for outputting an actuation signal to 31.

The notifying means 31 is formed by a buzzer or the like which, for example, blinks a red lamp or calls a warning sound to call attention when the connecting portion 10 of the electric equipment is overheated.

The actuating means 32 has an amplifier 33. When the temperature of the crimp terminal 12 exceeds a set temperature, the actuating signal is output to the notifying means 31 by inputting the detection information of the temperature sensor 13 and, for example, The monitoring signal i is output to a central monitoring station or the like .

Next, the operation of this embodiment will be described.

The crimp terminal 12 mounted on the terminal block 11 forms an energizing path with the energizing part through the connecting part 10 of the electric equipment, and the cable 18 and the electric equipment can be energized. If the temperature of the crimp terminal 12 during energization rises, the temperature sensor 13
The temperature change of 2 is transmitted.

At this time, the connection portion 10 of the electric equipment can be connected in either a series or a parallel state by the connection terminal 14, and at the same time, the temperature sensors 13 are continuously connected so that they can be electrically connected when connecting. To be done.

When the temperature of the crimp terminal 12 becomes overheated above the set temperature, the detection information indicating that the temperature sensor 13 is overheat is transmitted to the connection terminal 14 through the conductive wire 20, and the operating means is operated through the connection terminal 14. 32 is transmitted. The actuating means 32 receiving the detection information from the temperature sensor 13 outputs an actuating signal to the notifying means 31 and at the same time, outputs a supervisory signal i to, for example, a central monitoring station (see FIG. 4).

The notification means 31, which has received the operation signal from the operation means 32, calls attention by, for example, blinking a red lamp or operating a buzzer or the like that emits a warning sound to notify that an overheated state has occurred. .

As described above, the temperature of the crimping terminal 12 which is being energized is detected by the connection portion 10 of the electric equipment, and the blinking red lamp or the buzzer emitting a warning sound is activated, or the monitoring signal i is sent to the central monitoring station or the like. Can be output to monitor the occurrence of overheating of electrical equipment.

Therefore, the occurrence of overheating can be achieved without using a costly thermocouple and without directly inspecting the condition of the circuit wiring and the test temperature tape by removing the exterior part of the electric equipment. It is possible to monitor, and it is possible to automate the inspection that secures certainty, easiness and insulation.

[0030]

Since the connecting portion of the electric equipment according to the present invention has the above-mentioned structure, it is possible to monitor the occurrence of overheating of the electric equipment by the inspection means having certainty, easiness and insulation. Become.

Furthermore, it occurs in the terminal block of the connection part of the electric equipment.
Overheating can be detected. Also, a pair of terminal blocks
To the connection terminal of the other terminal block.
Since the connecting part is provided, the connection part of this electrical equipment can be increased.
If it is easy, the terminal blocks can be easily connected.

[Brief description of drawings]

1A and 1B show a connecting portion of an electric equipment according to the present invention, FIG. 1A is a front explanatory view, and FIG. 1B is an explanatory view of a connection state between the connecting portions .

2A and 2B show a connection part of electric equipment, in which FIG. 2A is a side view and FIG. 2B is a vertical cross-sectional view in FIG.

FIG. 3 is a schematic explanatory view of a mounted state of a temperature sensor.

FIG. 4 is a schematic explanatory view showing a configuration of an overheat monitoring device for electric equipment according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Connection part of electrical equipment 12 Crimping terminal (energized connection part) 13 Temperature sensor (temperature detection means) 14 Connection terminal (connection means) 21 Convex connection part (fitting part) 22 Concave connection part (fitted part) 30 Overheat monitoring device for electric equipment 31 Notification means 32 Actuation means

Claims (1)

[Claims] 1. Cables for electrical equipment are connected to each other
Terminal blocks that are arranged in a line in a straight line, and are provided corresponding to each terminal part.
And the resistance value changes according to the detected temperature change.
Each temperature sensor that changes and one pair each at the same position on the terminal side of both ends
Connection terminals provided on the slave board and conductive wires that connect between the connection terminals on both ends of the terminal board, respectively.
The temperature sensor is connected in parallel to both conductive wires, and the connection terminal of another terminal block can be fitted to the tip of the connection terminal.
Connection of electrical equipment, characterized by the provision of various connections
Department.