JP2002289082A - Circuit breaker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a circuit breaker that avoids increase of the number of parts, integrates each electrode at the same time in case of two electrodes, and also improves an efficiency of assembling work without becoming unstable. SOLUTION: In a circuit breaker 1, a case 13 is comprised of a base 11 and a cover 12. A variety of parts are fitted into a recession 11a formed on left an right sides of the base 11. The variety of parts are fixed by covering the side face and the upper face of the base 11 with a box type cover 12. Then, the variety of parts are attached by engaging the side face of the base 11 with the inner side of the side face of the cover 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a structure for incorporating various components of a circuit breaker into a case.

[0002]

2. Description of the Related Art Conventionally, as a structure for incorporating various components into a case of a circuit breaker, as shown in FIG. 24 is screwed and fixed with a screw 25,
The circuit breaker 32 used when the case 31 is a single-pole type of a vertically split type as shown in FIG.
(FIG. 5b), and the left case 35 is attached to the right case 33.
Are held by holding various parts 34 (FIG. 5).
c) As shown in FIG. 6, the circuit breaker 42 used when the case 41 is a two-pole type of vertical three-split type has various components 44 of one pole arranged in the right case 43 (FIG. 6 b).
The various parts 44 are sandwiched between the right side of the central case 45 and the right side of the central case 45 (FIG. 6c), and the various parts 46 of the other pole are arranged on the left side of the central case 45 (FIG. 6d).
The left case 47 is abutted against the left side surface of the central case 45 to hold various components 46 therebetween. (FIG. 6e)

[0003]

However, the circuit breaker shown in FIG. 4 has a drawback that the number of parts increases and workability is poor, and the circuit breakers shown in FIGS. 5 and 6 have both sides of the parts. There is a drawback that the components are difficult to be mounted because the components are wobble and the stability is poor at the time of mounting because they are sandwiched by the case, and the circuit breaker shown in FIG. 6 has a drawback that the circuit breakers shown in FIG.

[0004]

SUMMARY OF THE INVENTION In view of the above-mentioned problems of the conventional circuit breaker, an object of the present invention is to increase the number of parts without increasing the number of parts.
In the case of two poles, each pole can be incorporated at the same time to provide a circuit breaker that can be installed easily without disturbing parts, and has a structure including at least a fixed contact having a fixed contact and a fixed contact. A movable contact having a movable contact facing and separating from the fixed contact of the contact, an opening and closing mechanism for opening and closing the movable contact and the fixed contact, an operation handle for operating the opening and closing mechanism, and an abnormal current in the electric circuit. In the circuit breaker including the abnormal current detection device for detecting the current and driving the switching mechanism, the power supply side terminal connected to the fixed contact, and the load side terminal connected to the movable contact, the left and right of the base Various components were fitted to the side surface, and the side and top surfaces of the base were covered with a box-shaped cover to fix the various components.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A circuit breaker has a case composed of a base and a cover, and various components are fitted into recesses on the left and right sides of the base, and the side and top surfaces of the base are covered with a box-shaped cover. Then, various parts are fixed, and the side surface of the base and the inner side surface of the cover are engaged and attached.

[0006]

1 is a circuit diagram showing an embodiment of a circuit breaker according to the present invention.
This will be described with reference to the attached drawing of FIG.

The circuit breaker 1 includes a fixed contact 3 having a fixed contact 2, a movable contact 5 having a movable contact 4 opposed to and separated from the fixed contact 2 of the fixed contact 3, and a movable contact 5
Opening / closing mechanism 6 for opening and closing the fixed contact 3, an operating handle 7 for operating the opening / closing mechanism 6, and an abnormal current detecting device such as a bimetal or an electromagnetic coil for detecting an abnormality in an electric circuit and driving the opening / closing mechanism 6. 8, a power supply side terminal 9 connected to the fixed contact 3, and a load side terminal 10 connected to the movable contact 5.
And a base 13 for storing these parts and a case 13 including a cover 12.

In the case of a two-pole circuit breaker, a concave portion 11a for fitting a component is formed on the left and right side surfaces of the base 11, and the fixed contact 3 of each pole is fitted into the concave portion 11a from the left and right side surfaces. In addition, the movable contact 5 of each pole and the abnormal current detecting device 8
And are fitted. The power supply terminal 9 connected to the fixed contact 3 is mounted on the upper surface on one end of the base 11, and the load terminal 10 connected to the movable contact 5 is mounted on the upper surface on the other end of the base 11. Is placed. The operation handle 7 is connected to the opening / closing mechanism section 6, and the opening / closing mechanism section 6 is attached to substantially the center of the upper surface of the base 11.

The base 11 is covered by a box-shaped cover 12.
1 to cover the side and top of the base 11 and the cover 12
It is attached by engaging with the inside of the side surface. An opening 12a is formed on the upper surface of the cover 12, and the operation handle 7 projects outside from the opening 12a. Since the cover 12 contacts the side surface of the base 11, the fixed contact 3, the movable contact 5,
And the abnormal current detecting device 8 is fixed.

[0010] In the case of a one-pole circuit breaker, a concave portion for fitting a component is formed only on one side surface of the base.

[0011]

As described above, the circuit breaker according to the present invention comprises a fixed contact having at least a fixed contact, a movable contact having a movable contact opposed to and separated from the fixed contact of the fixed contact, An open / close mechanism that opens and closes the movable contact and the fixed contact, an operation handle that operates the open / close mechanism, an abnormal current detection device that detects an abnormal current in the electric circuit and drives the open / close mechanism, and is connected to the fixed contact. In the circuit breaker having the power supply side terminal and the load side terminal connected to the movable contact, various components are fitted to the left and right side surfaces of the base, and the side and top surfaces of the base are box-shaped covers. The number of parts does not increase, and the number of parts can be increased. In the case of two poles, each pole can be incorporated at the same time. .

[Brief description of the drawings]

FIG. 1 is an internal right side view of a circuit breaker according to the present invention.

FIG. 2 is an internal bottom view of the circuit breaker according to the present invention.

FIG. 3 is a view showing a method of assembling the circuit breaker according to the present invention.

FIG. 4 is a right side view of the inside of a conventional circuit breaker of a horizontal split type.

FIG. 5 is a view showing a method of assembling a conventional circuit breaker of a vertical split type.

FIG. 6 is a view showing a method of assembling a conventional circuit breaker of a vertical three-division type.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Circuit breaker 2 Fixed contact 3 Fixed contact 4 Movable contact 5 Movable contact 6 Opening / closing mechanism part 7 Operating handle 8 Abnormal current detection device 9 Power supply side terminal 10 Load side terminal 11 Base 11a Depression 12 Cover 12a Opening 13 Case

Claims (1)

[Claims] 1. A fixed contact having at least a fixed contact, a movable contact having a movable contact facing and separating from the fixed contact of the fixed contact, and opening and closing the movable contact and the fixed contact. An opening / closing mechanism section, an operation handle for operating the opening / closing mechanism section, an abnormal current detection device that detects an abnormal current in an electric circuit and drives the opening / closing mechanism section, and a power supply side terminal connected to the fixed contact, In the circuit breaker having the load-side terminal connected to the movable contact, the various components are fitted to the left and right side surfaces of the base, and the side and top surfaces of the base are covered with a box-shaped cover. A circuit breaker, wherein the various components are fixed.