JP2006339081A - Circuit breaker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a circuit breaker wherein a load side terminal can be easily connected even if its thickness is reduced. <P>SOLUTION: A power supply side terminal 2 arranged in a back face of a case 4 and the load side terminal 3 arranged in a front surface are arranged in a vertical direction of the case 4. All the terminals of the power supply side terminal 2 and the load side terminal 3 are arranged on a centerline M including an operating lever 1 in a plane view. The load side terminal 3 is arranged on an inclined face 4a formed in the front surface of the case 4 so that the load side terminal 3 can be easily visually recognized from above. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a circuit breaker that is installed in a distribution board and connects a load wiring connected to an outlet or the like of each room.

  Conventionally, the power supply side terminal and the load side terminal of the circuit breaker for wiring are both arranged side by side so that the conductor bar or the load side wiring can be easily connected. However, in recent homes, the amount of electric equipment used has increased as the amount of electric equipment used has increased, and the number of circuit breakers installed in the distribution board has also been increasing. As a result, a large space is required for the storage, and a circuit breaker for wiring having a smaller width and a smaller size than the conventional one has been developed and spread (for example, see Patent Document 1). In this thin circuit breaker, the load-side terminal is composed of a quick-connect terminal that does not use screws. For example, the width of the circuit breaker is 16 mm, which is half the width of the conventional circuit breaker. Is possible.

Japanese Patent Laid-Open No. 11-16479 JP 2003-217426 A

  In the circuit breaker disclosed in Patent Document 1, the load-side terminal is a quick-connect terminal and the power-side terminal is screw-tightened. However, the power-side terminal does not use a screw as shown in Patent Document 2, for example. If the plug type is vertically arranged, and the load-side terminals of the quick connection terminals are also vertically arranged, the thickness can be further reduced. However, in that case, since the power supply side terminal is inserted into a conductor bar pre-assembled in the distribution board, the load side terminals are individually connected compared to the case where the terminal connection operation is not hindered even if it is arranged vertically. Since the wires are inserted and connected, there is a problem that the connection holes of the wires become difficult to see when it is arranged vertically, and the connection operation becomes difficult.

  Therefore, in view of such problems, the present invention has an object to provide a circuit breaker for wiring that can be easily connected even when the load side terminals are arranged vertically.

In order to solve the above-mentioned problem, the invention according to claim 1 is provided with an operation lever for opening and closing the electric circuit on the upper surface of the circuit breaker case, the power supply side terminal is arranged on the back surface, the load side terminal is arranged on the front surface, Is a circuit breaker composed of fast connection terminals, in which all terminals of the power supply side terminal and the load side terminal are arranged in the vertical direction of the case, and at least the load side terminal forming part on the front surface of the case is inclined. The load side terminal can be visually recognized from above.
With this configuration, even if the terminals are arranged in the vertical direction, the load-side terminals can be seen from above, so that it is easy to connect the wiring from the front in the state where it is assembled to the distribution board, and the connection work can be done even if the width is reduced. It does not become difficult, and the connection status is easy to see, so connection failure is unlikely to occur. Further, since the load side terminal is slightly upward, the amount of protrusion of the case forward is small compared to the conventional vertical surface formation.

The invention according to claim 2 is the invention according to claim 1, wherein all terminals of the power supply side terminal and the load side terminal are arranged on substantially the same straight line including the operation lever in plan view. .
With this configuration, the case width of the circuit breaker for wiring can be minimized.

A third aspect of the invention is characterized in that, in the invention of the first or second aspect, the load side terminal is formed on one inclined surface.
With this configuration, it is only necessary to provide one inclined surface on the front surface of the case, and it is possible to eliminate unevenness and stepped portions from the load side terminal forming surface, making it easy to visually recognize the load side terminal and making the breaker case easy. Become.

  According to the present invention, since the load-side terminal can be visually recognized from above the circuit breaker case, the load-side terminal can be visually recognized from the front in a state where it is assembled to the distribution board, and the connection operation of the wiring is easy and the connection state is easy to see. Is unlikely to occur.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, embodiments of the invention will be described in detail with reference to the drawings. FIG. 1 shows an example of a circuit breaker according to the present invention, (a) is a perspective explanatory view, (b) is a plan explanatory view, 1 is an operating lever for opening and closing an electric circuit, and 2 is in a distribution board The power supply side terminal 3 connected to the conductor bar constituting the power supply line disposed in the load line 3 is connected to the load wiring connected to the outlet or the like. Reference numeral 7 denotes a branch bar branched from the conductor bar for connection to the power supply side terminal 2, and 8 denotes a load wiring to be inserted and connected to the load side terminal 3.

  The operation lever 1 is installed at the approximate center of the upper surface of the case 4 made of synthetic resin, and the unillustrated shut-off mechanism incorporated in the case 4 is operated by rotating in the front-rear direction. And the load side terminal 3 are connected / released. Note that an overcurrent detection mechanism (not shown) is incorporated in the case 4, and when the overcurrent is detected, the interruption mechanism opens.

  The power source side terminal 2 is provided on the back surface of the case 4, and two terminals are formed on the top and bottom of the back surface of the case 4 formed by a flat vertical surface. The power supply side terminal 2 is formed by penetrating in the horizontal direction and notched in a U-shape so that a wide branch bar 7 can be easily inserted and connected, and a conductor bar disposed in a distribution board can be directly inserted. It is also possible to connect.

The load side terminal 3 is provided on the front surface of the case 4. The front surface of the case 4 has a rising surface that is perpendicular to the lower portion, and has a uniform inclined surface 4a formed by inclining from the middle toward the rear. The load side terminal 3 is formed by vertically arranging two terminals on the inclined surface 4a, and all the terminals of the power source side terminal 2 and the load side terminal 3 and the operation lever 1 are as shown in FIG. Are arranged in a straight line on a center line M in plan view, and the case 4 is formed with a slight width.
Further, the load side terminal 3 is formed of a quick connection terminal, has a wire insertion space 5 toward the inside of the case 4 orthogonal to the inclined surface 4a, and a locking metal fitting for locking the inserted load wiring 8 (see FIG. (Not shown) inside. Reference numeral 9 denotes a release button that is operated when the connected load wiring 8 is pulled out. The lock button 9 is released to facilitate removal of the load wiring 8.

  The circuit breaker configured as described above is used by being assembled to a distribution board as follows. A power supply line formed of a conductor bar is arranged in the distribution board, and a branch bar 7 for insertion into the power supply side terminal 2 of the circuit breaker is arranged in accordance with the installation position of each circuit breaker. By arranging the circuit breaker for wiring, the power source side terminal 2 is connected to the power source by connecting the branch bar 7. And the load side terminal 3 is connected by inserting the electric wire of the load wiring 8 from the diagonal front orthogonal to the inclined surface 4a of the assembled circuit breaker front surface.

In this way, by making the front of the case an inclined surface, even if the terminals are arranged vertically and the case width is reduced, the load side terminals can be seen from the front in the assembled state on the distribution board, and wiring connection operations can be performed. It is easy to see, the connection state is easy to see, and poor connection is unlikely to occur. In addition, since the load side terminal is slightly upward, the amount of protrusion to the front of the case is small as compared with the case of the conventional vertical formation, and it is easy to reduce not only the width but also the longitudinal direction.
Moreover, the case width | variety of the circuit breaker for wiring can be minimized by arrange | positioning each terminal on the same straight line containing an operation lever by planar view.
Furthermore, since only one inclined surface is provided on the front surface of the case, there are no irregularities or stepped portions from the load side terminal forming surface, so that the load side terminal can be easily seen and the breaker case can be easily manufactured.

  In addition, the electric wire insertion space 5 of the load side terminal 3 does not have to insert the electric wire in the direction orthogonal to the inclined surface 4a, and is formed vertically as shown in FIG. May be connected. By doing so, the terminals are easy to see and the load wiring insertion operation is further facilitated. Moreover, as shown in FIG.2 (b), it forms laterally and you may make it insert and connect a load wiring from the front. By doing so, the protruding amount of the connected load wiring to the front of the distribution board can be reduced.

FIG. 3 shows another example of the circuit breaker according to the present invention. The shape of the front surface provided with the load side terminal 3 is different from that of FIG. As shown in the figure, the inclined surface 4a is formed in two steps, and each terminal is provided on each of the independent inclined surfaces 4a and 4a, and the inclined surfaces are connected by a vertical surface. In addition, the same code | symbol is provided to the component same as the structure of the said FIG. 1, and description is abbreviate | omitted. Further, the power supply side terminals are omitted.
In this way, only the terminal forming portion may be an inclined surface, and visibility from above can be maintained, and the amount of protrusion of the case forward can be minimized by increasing the vertical surface.

  In the above embodiment, a pair of power supply side terminals 2 are provided on the back surface of the case 4. However, in the case of a single-phase three-wire system, it is disclosed in Patent Document 2 as a three-terminal input. A switching mechanism may be provided to switch and input. Further, the two terminals of the load side terminal 3 do not have to be arranged in a straight line up and down, and may be slightly shifted left and right. By doing so, the visibility from above the load side terminal can be further improved while the case width is narrowed.

An example of embodiment of the circuit breaker for wiring which concerns on this invention is shown, (a) is a perspective explanatory drawing, (b) is a plane explanatory drawing. It is a figure which shows the example of a change of the load side terminal of FIG. It is an isometric view explanatory drawing which shows the other example of the circuit breaker for wiring which concerns on this invention.

Explanation of symbols

  1 .... Control lever 2 .... Power supply side terminal 3 .... Load side terminal 4 .... Case 4a .... Inclined surface.

Claims (3)

The circuit breaker case is equipped with an operation lever that opens and closes the electrical circuit, the power supply side terminal is arranged on the back, the load side terminal is arranged on the front, and the load side terminal is a quick connection terminal.
All terminals of the power supply side terminal and the load side terminal are arranged in the vertical direction of the case, and at least the load side terminal forming part on the front surface of the case is inclined and inclined upward, so that the load side terminal can be visually recognized from above. A circuit breaker for wiring. 2. The circuit breaker according to claim 1, wherein all terminals of the power supply side terminal and the load side terminal are arranged on substantially the same straight line including the operation lever in a plan view. The circuit breaker according to claim 1 or 2, wherein the load side terminal is formed on one inclined surface.

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