JPH062537U - Earth leakage breaker - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an earth leakage breaker that makes it easy to combine the body and frame. [Structure] A body 10 having a bottom plate 13 provided with an opening 14 and a frame 20 having a housing chamber 22 inside, which is equipped to close the opening of the body 10. And a zero-phase current transformer 39 for detecting an electric leakage current, which is disposed inside the body and which is disposed in the housing chamber of the frame.
A leakage breaker comprising a substrate 40 having an amplifier circuit for amplifying the output of the zero-phase current transformer from the opening of the body via the lead wire 60, wherein one side of the heat-resistant double-sided tape 50 is attached to the substrate. The attaching part 41 to be attached was provided, and the substrate was attached to the bottom plate of the body via the double-sided tape.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an earth leakage breaker.

[0002]

[Prior art]

 Conventionally, as this type of earth leakage breaker, there is one disclosed in Japanese Patent Application No. 3-152746. In this type, a substrate having an amplifier circuit for amplifying the output of the zero-phase current transformer is housed in a housing chamber at the bottom of the body via a lead wire.

[0003]

[Problems to be solved by the device]

 In the above-mentioned earth leakage breaker, the substrate having the amplifier circuit for amplifying the output of the zero-phase current transformer is housed in the housing chamber at the bottom of the body via the lead wire, so there is no risk of being exposed to the arc generated at the contact part. However, when the body and frame are combined, the board may fluctuate and become an obstacle, and in this case, there was a problem in that it was difficult to fit the body and frame together.

The present invention has been made in view of the above problems, and an object thereof is to provide an earth leakage breaker in which a body and a frame can be easily combined.

[0005]

[Means for Solving the Problems]

 In order to solve such a problem, the earth leakage breaker of the present invention is equipped with a box-shaped body having a bottom plate having an opening at least in part and an opening hole of the body. And a zero-phase current transformer that detects a leakage current, which is formed inside the body by forming a housing with a frame having an accommodation chamber inside when the body is equipped with the housing. A leakage breaker provided in a housing chamber of the frame, the substrate having an amplification circuit for amplifying the output of the zero-phase current transformer from the opening of the body through the lead wire, The board is provided with a sticking part to which one side of the heat-resistant double-sided tape is stuck, and the board is stuck to the bottom plate of the body via the double-sided tape.

[0006]

[Action]

 According to this configuration, the board has a sticking part to which one surface of the heat-resistant double-sided tape is stuck, and the board is stuck to the bottom plate of the body through the double-sided tape, so that when the body and the frame are combined together. The board does not fluctuate.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS.

That is, as shown in FIG. 2, the housing of this type of earth leakage breaker is composed of a body 10 and a frame 20 having a housing chamber 22 inside the body 10. .

The body 10 is composed of a body body 11 having a bottom plate 13 having an opening 14 and a front cover 12 which covers an upper surface opening of the body body 11. The body body 11 has two parallel bodies. By forming various partitions 15,15, the mounting space for three poles is secured. However, the partition walls 15 and 15 here are divided not by traversing the body main body 11 but by forming a notch 16 in the middle thereof.

A terminal 32 having a fixed contact 31 is attached to one end of the body 11 and a terminal 33 is attached to the other end. As shown in FIG. 3, a movable contact 35 having a movable contact is connected to each of the terminals 33 through an electromagnetic trip element 34. Each movable contact 35 is attached to a cross bar 36 that is rotatably supported by the groove 17 formed in the partition wall 15. The shut-off opening / closing mechanism 38 provided with the handle 37 is supported between the partition wall 15 and the front cover 12 and rotates the crossbar 36 during operation. 35 turns on and off the connection with the fixed contact 31 at the same time. Here, the wiring connecting between the electromagnetic trip element 34 and the movable contact 35 is passed through the zero-phase current transformer 39, and because of this wiring, the partition wall 15 has the above-mentioned structure. A cutout 16 is formed.

The frame 20 has a groove 21 for attaching to the DIN rail on the back surface, and an accommodating chamber 22 is provided inside when the frame 20 is mounted on the body 10. A substrate 40 having a circuit for amplifying the output of the zero-phase current transformer 39 is housed in the housing chamber 22. The substrate 40 is provided with a sticking portion to which one surface of the heat resistant double sided tape 50 is stuck.

Next, a method of attaching the body 10 and the frame 20 will be described. That is, one surface of the heat-resistant double-sided tape 50 is attached to the attachment portion 41 of the substrate 40 having the amplification circuit for amplifying the output of the zero-phase current transformer 39 from the opening 14 of the body 10 through the lead wire 60. To wear. Then, the other surface of the heat-resistant double-sided tape 50 is attached to the bottom plate 13 of the body 10 to temporarily fix the substrate 40 to the body 10. In this state, the frame 20 is attached to the body 10 with the screw 70.

According to this invention, since the substrate is attached to the bottom plate of the body with the heat-resistant double-sided tape, it is possible to prevent the substrate from wobbling when the body and the frame are combined with each other, and to suppress the influence of heat of the contact portion. be able to.

According to this embodiment, the housing chamber is provided in the frame in a state of being installed in the body, but this housing chamber may be provided in the bottom plate of the body. Needless to say, the attaching portion may have any shape as long as the double-sided tape can be attached.

[0015]

[Effect of device]

 According to this configuration, the board has the sticking part to which one surface of the heat-resistant double-sided tape is stuck, and the board is attached to the bottom plate of the body via the double-sided tape, so that when the body and the frame are combined together. The board can be prevented from wobbling, and the body and frame can be easily combined.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of the present invention.

FIG. 2 is an exploded perspective view of FIG.

3 is a perspective view of the shutoff opening / closing mechanism of FIG. 1. FIG.

FIG. 4 is an explanatory view showing a method of attaching a substrate to the one shown in FIG.

[Explanation of symbols]

 10 Body 13 Bottom plate 14 Opening 20 Frame 22 Storage chamber 39 Zero-phase current transformer 40 Board 41 Adhesive part 50 Double-sided tape 60 Lead wire

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takanobu Tanaka 1048, Kadoma, Kadoma, Osaka Prefecture Matsushita Electric Works Co., Ltd. (72) Takashi Kitamura 1048, Kadoma, Kadoma City, Osaka Matsushita Electric Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A box-shaped body having a bottom plate having an opening in at least a part thereof, and a body provided so as to close the opening of the body. A housing is formed by a frame having a housing chamber, and the housing is arranged inside the body. The zero-phase current transformer detects a leakage current and the frame is housed in the housing chamber. A circuit breaker having an amplifier circuit that amplifies the output of the zero-phase current transformer from the opening of the body through the lead wire, and one side of the heat-resistant double-sided tape is attached to the circuit board. An electric leakage breaker characterized in that a board is attached to the bottom plate of the body via a double-sided tape.