JP7346127B2 - plug-in breaker - Google Patents

Description

The present invention relates to a plug-in breaker which is arranged on and connected to a copper bar, with terminals connected to the copper bar at the bottom.

At the bottom there is a circuit breaker with terminals that connect to the copper bar. For example, in Patent Document 1, a terminal base including a clip-type terminal device is connected to the bottom of a circuit breaker housing to form a plug-in breaker.
By placing the terminals at the bottom of the breaker in this way, the breaker can be directly connected to the copper bar installed in the distribution board without using separate connecting fittings, which reduces the number of materials used. This made it possible to connect the copper bar and branch breaker in a space-saving manner.

Japanese Patent Application Publication No. 2005-19199

The plug-in type breaker with the above structure has a structure in which the power supply side terminal and the load side terminal are arranged perpendicular to the direction in which the copper bar is installed, and in the case of a branch breaker, the load wiring is and then pulled out laterally. Therefore, it is convenient for routing the load wiring and has a preferable structure.

However, in the case of a main breaker, unlike a branch breaker, the load side terminal is connected to a copper bar, so when a plug-in type is used, it is desirable to have a vertical arrangement parallel to the copper bar.
The reason for this is as follows. FIG. 8 is an explanatory diagram of a conventional distribution board, and description will be given with reference to FIG. 8. The power cable is usually drawn in from above and connected to the main breaker 21. Further, as shown in FIG. 8, the copper bars 23 arranged from the main breaker 21 and to which the branch breakers 22 are connected are arranged vertically. Therefore, while the branch breaker 22 is arranged horizontally with respect to the copper bar 23, the main breaker 21 is arranged vertically.

Therefore, when trying to make the main breaker a plug-in type, the branch breaker configuration, which is basically horizontally arranged, cannot be applied, and a new one must be manufactured to make it a plug-in type, which creates a cost problem. .
Note that the conventional main breaker 21 shown in FIG. 8 connects the load side terminal to the copper bar 23 using a connecting fitting 24.

Therefore, in view of these problems, the present invention provides a plug-in that has a structure that can be used in either a direction perpendicular to or parallel to the direction in which the copper bars are arranged, so that it can be applied to both branch breakers and main breakers. The purpose is to provide a type breaker.

In order to solve the above problem, the invention according to claim 1 has a power supply side terminal and a load side terminal by sandwiching a plurality of parallelly arranged copper bars with clip terminals provided on the bottom surface of a rectangular housing. This is a plug-in type breaker that connects one of the clip terminals to a copper bar, and the clip terminals are arranged in three steps in the diagonal direction of the housing and can be rotated 90 degrees with a rotation axis perpendicular to the bottom of the housing. By rotating the clip terminal, the housing can be arranged in either a perpendicular or parallel direction to the copper bar arrangement direction, and can be connected to the copper bar in either direction. Characterized by what you can do.
According to this configuration, the clip terminal for connecting to the copper bar can be rotated by 90 degrees, so the connection direction of the breaker to the copper bar can be adapted to either the orthogonal direction or the parallel direction, and the branch can be assembled in different directions. It is possible to use a common housing for both the breaker and the main breaker, thereby reducing costs.

The invention according to claim 2 is the configuration according to claim 1, in which a skirt member is disposed around the lower part of the housing and has a continuous wall on each side of the housing and covers the periphery of the clip terminal, and the skirt member Each side forming the wall is characterized in that a notch is formed in each side of the wall to enable the clip terminal to hold the copper bar in two orthogonal directions.
According to this configuration, the clip terminal protruding downward can be protected by the skirt member, and since the copper bar at the lower part of the housing is closed from the surroundings when the copper bar is attached, it is possible to prevent the attachment of dust and the like.

The invention according to claim 3 is the configuration according to claim 1, in which the housing includes a main body including an operation handle for connecting/disconnecting the electric path between the power supply side terminal and the load side terminal, and a clip terminal. The terminal base is removably disposed at the bottom of the housing.
According to this configuration, since the main body and the terminal base provided with the clip terminal can be separated from each other in the housing, it is possible to use a common terminal base for the main breaker and the branch breaker.

The invention according to claim 4 is the structure according to claim 3, in which the terminal base is provided with a skirt member that has continuous walls on each side of the terminal base and covers the periphery of the clip terminal, A feature is that each side forming the wall is formed with a notch that allows the clip terminal to hold the copper bar in two orthogonal directions .
According to this configuration, the clip terminal can be protected by the skirt member, and since the copper bar at the lower part of the housing is closed when the copper bar is attached, it is possible to prevent the attachment of dust and the like.

According to the present invention, since the clip terminal for connecting to the copper bar can be rotated by 90 degrees, the connection direction of the breaker to the copper bar can be adapted to either the orthogonal direction or the parallel direction, and the branch can be assembled in different directions. It is possible to use a common housing for both the breaker and the main breaker.

FIG. 1 is a perspective view showing an example of a plug-in breaker according to the present invention. FIG. 2 is a perspective view of the plug-in breaker of FIG. 1 viewed from below. FIG. 2 is a bottom view of the plug-in breaker of FIG. 1; FIG. 4 is a bottom view of the clip terminal rotated 90 degrees from the state shown in FIG. 3; FIG. 5 is a perspective explanatory view showing the rotating structure of the clip terminal, in which (a) shows the clip terminal in the state of FIG. 3, and (b) shows the clip terminal in the state of FIG. 4. 5(a) is an explanatory diagram corresponding to FIG. 5(a), and FIG. 5(b) is an explanatory diagram corresponding to FIG. 5(b); FIG. FIG. 2 is a front view of a distribution board in which the main breaker and branch breakers are plug-in breakers. It is a front view of a conventional distribution board in which a main breaker and a plug-in type branch breaker are assembled.

Hereinafter, embodiments embodying the present invention will be described in detail with reference to the drawings. 1 to 3 show an example of a plug-in breaker according to the present invention, with FIG. 1 being a perspective view, FIG. 2 being a perspective view seen from below, and FIG. 3 being a bottom view. A plug-in breaker 1 (hereinafter simply referred to as a "breaker") has a power supply terminal 2 at the rear end of a housing 10, a load terminal 3 at the front end, and a power supply terminal 2 and a load terminal 3 at the center of the top surface. The housing 10 has an operating handle 4 for turning on/off the electrical circuit between the housing 10 and a clip terminal 5 for connecting to a copper bar on the bottom surface 10a of the housing 10.
Further, a skirt member 6 for protecting the clip terminal 5 is provided around the bottom of the housing 10.
It should be noted that here, a configuration having three terminals corresponding to a three-wire electric circuit is shown, and for example, a breaker used for a three-phase three-wire electric circuit is shown.

The clip terminal 5 is formed in a U-shape and is configured to sandwich the copper bar, and is connected to either the power supply side terminal 2 or the load side terminal 3 inside the housing 10. Specifically, in the case of a branch breaker, the power supply side terminal 2 and the clip terminal 5 are connected, and in the case of a main breaker, the load side terminal 3 and the clip terminal 5 are connected.
The three clip terminals 5 are arranged in a stepped manner in the diagonal direction of the housing 10, and are arranged so that they can be connected to the three copper bars arranged in parallel in either the vertical direction or the horizontal direction. ing.

The skirt member 6 has continuous walls on each side of the housing 10 and is formed as a rectangular frame surrounding the three clip terminals 5. A slit-shaped notch 6a is provided on each side to allow insertion of a copper bar in accordance with the position of the clip terminal 5.

FIG. 4 shows a state in which the clip terminal 5 is rotated by 90 degrees from the state shown in FIG. 3, and the clip terminal 5 is configured to be rotatable. In the state shown in FIG. 3, the breaker 1 is attached to the copper bars arranged in the horizontal direction, which is the short side direction of the housing 10, but in FIG. A breaker 1 is attached to the breaker 1.

FIG. 5 is a perspective explanatory view showing the rotating structure of the clip terminal 5, in which (a) shows the clip terminal 5 in the state shown in FIG. 3, and (b) shows the clip terminal 5 in the state shown in FIG. Moreover, FIG. 6 is an explanatory diagram showing the relationship between the clip terminal 5 and the copper bar 11 arranged in the distribution board, (a) is an explanatory diagram corresponding to FIG. 5(a), and (b) is an explanatory diagram corresponding to FIG. It is an explanatory view corresponding to b).
As shown in FIG. 5, the clip terminal 5 has a rotating shaft 14 orthogonal to the housing bottom surface 10a, and is inserted into a fitting hole 12 provided in the housing bottom surface 10a.

As shown in FIG. 6, the fitting hole 12 has a fan-shaped enlarged diameter portion 12a formed around it, and the rotating shaft 14 is provided with a protrusion 14a that engages with this notch. By engaging the protrusion 14a with the enlarged diameter portion 12a, the rotation of the rotating shaft 14 is restricted within a range of 90 degrees.
By rotating the clip terminal 5 in this manner, it is possible to select either the orientation of the breaker 1 perpendicular to the copper bar 11 shown in FIG. 6(a) or the orientation parallel to the copper bar 11 shown in FIG. 6(b). , can be connected to the copper bar 11.

In this way, since the clip terminal 5 for connecting to the copper bar 11 can be rotated by 90 degrees, the connection direction of the breaker 1 to the copper bar 11 can be made to correspond to either the orthogonal direction or the parallel direction. Therefore, the housing 10 can be used in common for branch breakers and main breakers that are assembled in different directions, and costs can be reduced.
Further, the clip terminal 5 protruding downward can be protected by the skirt member 6, and when the housing 10 is attached to the copper bar 11, the copper bar 11 at the bottom of the housing 10 is closed from the surroundings, so that dust and the like can be prevented from adhering.

FIG. 7 shows a distribution board in which a main breaker 1a and a branch breaker 1b, which are the breaker 1 having the above structure, are assembled. On the inside back of the distribution board, a main bar consisting of three copper bars 11 is arranged in parallel in the vertical direction, and a main breaker 1a is arranged vertically with respect to this copper bar 11. connected. A plurality of branch breakers 1b are arranged laterally. As shown in FIG. 7, the main breaker 1a and the branch breaker 1b are arranged on the copper bar 11 in close contact with each other.

In this way, by using the clip terminal 5 provided on the housing bottom surface 10a, the load side terminal of the vertically arranged main breaker 1a can be connected to the copper bar 11. Further, the power supply side terminal of the horizontally arranged branch breaker 1b can be connected to the copper bar 11.
Therefore, since there is no need to use a separate connecting fitting, the main breaker 1a and the branch breaker 1b can be arranged in close contact with each other, which can also contribute to downsizing of the distribution board.

In the above embodiment, the clip terminal 5 is arranged on the bottom surface 10a of the housing 10 and the skirt member 6 is formed separately. The terminal base may be formed separately from the terminal base. In this case, for example, in the breaker 1 shown in FIG. 1, 30 is a main body and 31 is a terminal base.
In this way, the housing 10 may be separated into the main body 30 and the terminal base 31 provided with the clip terminal 5, and the terminal base 31 of the main breaker 1a and the branch breaker 1b can be shared, reducing costs. can.

1...Plug-in breaker, 1a...Main breaker, 1b...Branch breaker, 2...Power side terminal, 3...Load side terminal, 4...Operation handle, 5...Clip terminal, 6...Skirt Components, 6a...notch, 11...copper bar, 12...fitting hole, 12a...expanded diameter section, 14...rotating shaft, 14a...protrusion, 30...main body, 31...terminal base, .

Claims (4)

A plug-in type breaker that connects either the power supply side terminal or the load side terminal to the copper bars by holding multiple copper bars arranged in parallel with clip terminals provided on the bottom of the rectangular housing. There it is,
The clip terminals are arranged in three steps in a diagonal direction of the housing,
The housing has a rotation axis perpendicular to the bottom surface of the housing and is rotatably attached by 90 degrees,
By rotating the clip terminal, it is possible to select the direction in which the housing is arranged with respect to the direction in which the copper bar is arranged, either perpendicular or parallel to the direction, and the housing can be connected to the copper bar in either direction. Features a plug-in breaker. A skirt member having walls continuous to each side of the housing and surrounding the clip terminal is provided at the lower part of the housing, and each side forming the wall of the skirt member has a skirt member that is perpendicular to each other. 2. The plug-in type breaker according to claim 1, further comprising a notch that allows said copper bar to be held by a clip terminal in two directions. The housing includes a main body including an operation handle that connects/cuts off an electric path between the power supply side terminal and the load side terminal;
2. The plug-in breaker according to claim 1, further comprising a terminal base including the clip terminal and removably disposed at the bottom of the housing. The terminal base is provided with a skirt member that surrounds the clip terminal and has a continuous wall on each side of the terminal base, and each side of the skirt member that forms the wall is perpendicular to the terminal base. 4. The plug-in breaker according to claim 3, further comprising a notch that allows the clip terminal to hold the copper bar in two directions.

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