JP4607306B2 - Circuit breaker - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a circuit breaker, and in particular, the connection method differs between the power supply side connection terminal and the load side connection terminal, and the power supply side connection terminals are connected to both sides of the copper bar provided on the distribution board. The present invention relates to a circuit breaker.
[0002]
[Prior art]
When the connection method is different between the power supply side connection terminal and the load side connection terminal, the conventional circuit breaker is attached to the copper bar provided on the distribution board so that the power supply side connection terminal side faces each other. In that case, as shown in FIG. 7, the turning-on operation of the handle is performed by tilting the handle to the copper bar side.
[0003]
[Problems to be solved by the invention]
Therefore, the on / off operation direction of the circuit breaker handle is opposite to each other with the copper bar as the boundary, and the on / off operation direction differs depending on which side of the copper bar the circuit breaker is located. May cause confusion in operation and recognition, and as a result, it may cause an electric shock by accidentally touching the electric wire of the circuit where the circuit breaker is turned on, or turn off the circuit breaker even though it wants to apply voltage to the circuit There was inconvenience such as there.
[0004]
Therefore, the object of the present invention is that the connection method is different between the power supply side connection terminal and the load side connection terminal of the circuit breaker so that the power supply side connection terminal faces the copper bar provided on the distribution board. Even when the circuit breakers are attached to each other, the handle operating directions of the circuit breakers can be made the same, and a low-cost circuit breaker is provided without the user being confused or misidentified by the operation.
[0005]
[Means for solving problems]
According to a first aspect of the present invention, there is provided a handle member that is rotatably disposed in the case and switches between an on state and an off state of the circuit breaker, and a rotation operation of the handle member that is attached to a handle link attachment portion of the handle member. A link that operates in conjunction with the other end of the link, a pressing member that operates in conjunction with the pivoting operation of the handle member via the link, and an operation of the handle via the pressing member Including a contact device that turns on and off, and the contact holding is performed by using a line connecting the pressing member, the link mounting portion, and the rotation center of the handle member as a dead line, the handle link mounting portion exceeding the dead line, and in the circuit breaker to be made to regulate the movement in the direction of more than, it toward the bottom of the case from the rotation axis of the handle member as the mounting surface to the distribution board of the circuit breaker As vertical, the with the regardless on-off operation of the handle member slant-lined is fixed to the vertical direction, the movement locus of the mounting portion of the pressing member and the link to regulate to be secured to the vertical direction The guide portion is linearly arranged vertically below the rotation axis of the handle member and on both sides of the movement trajectory, and the opening edge that projects the operation portion of the handle member from the case is centered on the dead line. provided a rotational angle due to on-off operation of the handle member as a rotation angle regulating portion for uniformly regulating, the handle member, by mounting isosamples turned over with respect to the link, the power supply side of the circuit breaker load side The on / off operation direction of the handle member is reversed in the connecting direction, and the power supply side connection terminal is opposed to the copper bar provided on the distribution board of the circuit breaker. In the case of mounting as well, it is obtained by providing a circuit breaker as a feature to be able to equal the steering direction of the circuit breaker of one another.
[0007]
As a result, when the same handle is attached upside down with respect to the link, the on-operation direction of the handle can be reversed, so that two types of circuit breakers with different on-operation directions can be created using the same parts. Become. Therefore, even if the power supply side terminal of the circuit breaker is connected to the copper bar side of the distribution board, the circuit breakers attached to the opposite side of the copper bar are when the operating direction of the handle is viewed from the distribution board It is possible to make them the same, and the person who operates does not get confused about the operation direction and the on / off state. In addition, since the two types of circuit breakers in which the operation direction of the handle is changed can share components, the cost is reduced.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 shows an example of the internal structure when the circuit breaker is on. FIG. 2 shows the internal structure when the circuit breaker is off. FIG. 3 shows an example of the internal structure of the circuit breaker in the ON state when the handle member is provided upside down from the state of FIG. FIG. 4 shows an example of the internal structure in the OFF state of the circuit breaker when the handle member is provided upside down from the state of FIG. FIG. 5 shows an operation diagram in an on-off state when the handle member of the circuit breaker is normally provided and when it is turned upside down. FIG. 6 shows an example of an operation diagram in a conventional circuit breaker. FIG. 8 shows an explanatory view of the handle operation direction of the distribution board using the circuit breaker of the present invention.
[0009]
In FIG. 1, a circuit breaker is rotatably disposed in a case 6, and a handle member 1 for switching between an on state and an off state of the circuit breaker, a power supply side connection terminal 4 provided in the case 6, a case 6, a load-side connection terminal 5 provided at 6, a link 7 having one end attached to the handle link attaching portion 14 of the handle member 1 and operating in conjunction with a turning operation of the handle member 1, the handle member 1 and the link 7 includes a pressing member 8 provided with a link attachment portion 10 connected via a contact member 7 and a contact device that is turned on / off in conjunction with the operation of the handle 1 via the pressing member 8. Using the line connecting the member 8 and the attachment part 10 of the link 7 and the center of rotation of the handle 1 as a dead line, the dead line so that the handle link attachment part 14 exceeds the dead line and restricts the movement in the further direction. Handle rotation angle restricting portions 12 and 13 for uniformly restricting the rotation angle of the handle 1 as a center, and a guide 11 for restricting the movement locus of the pressing member 8 and the attachment portion 10 of the link 7 on the deadline. Has been.
[0010]
The handle member 1 pivots between an on position and an off position about the handle member pivot shaft 3, and the operation unit 2 projects from an opening 9 provided in the case 6.
[0011]
In the present embodiment, the power supply side connection terminal 4 and the load side connection terminal 5 have a plug-in terminal structure, and the load side connection terminal has a structure suitable for connection to a copper bar of a distribution board. Reference numeral 5 denotes a quick-connect terminal structure, which is a structure suitable for connecting a load electric wire, and is different in connection method.
[0012]
The guide 11 regulates the movement locus of the link mounting portion 10 that connects the pressing member 8 and the link 7 by rotating the handle member 1, and the restriction coincides with the dead line. I am doing so.
[0013]
When the handle member 1 is biased to the on position, the rotation angle restricting portions 12 and 13 rotate the handle member link mounting portion 14 from the initial position so that the handle member rotating shaft 3 and the link mounting portion are rotated. The movement of the handle member 1 is restricted so that the rotation angle of the handle member 1 is uniform around the dead line.
[0014]
The rotation angle restricting portions 12 and 13 use the edge of the case opening 9 that projects the operation portion 2 of the handle member 1. The link mounting portion 10 linearly operates downward in the figure by a guide 11 that is linearly disposed below the rotation shaft 3 of the handle member 1.
[0015]
To change the circuit breaker from the on state to the off state, the handle operating unit 2 is rotated in the direction of the load side terminal 5 in FIG. When the handle link mounting portion 14 is rotated from the initial position and exceeds the dead line connecting the handle member rotating shaft 3 and the link mounting portion 10, the balance of the link is lost, and as shown in FIG. Part 2 is biased to the off position.
[0016]
At this time, the link mounting portion 10 is linearly moved upward in the drawing on the dead line by a guide 11 linearly disposed below the rotation shaft 3 of the handle member 1. Further, the handle member 1 is restricted by the rotation angle restricting portion 13 so as to stop at an appropriate position.
[0017]
Next, FIG. 3 shows a case where the circuit breaker is in an on state when the handle member 1 is reversed and attached to the case 6 and the link 7 with respect to FIG.
[0018]
In this case, as described above with reference to FIG. 1, the position of the handle operating portion 2 is reversed on the left and right in the figure when the circuit breaker is on, as compared with the case where the handle member 1 is disposed on the case 6 as shown in FIG. is doing. Further, the handle rotation angle restricting portion 13 restricts the turning operation of the handle member 1 to the on side so that the turning operation of the handle member 1 and the link 7 is stopped at an appropriate position.
[0019]
Next, FIG. 4 shows a case where the circuit breaker is in an OFF state when the handle member 1 is reversed and disposed in the case 6 with respect to FIG.
[0020]
In this case, as described above, the position of the handle operating portion 2 is reversed when the circuit breaker is in an off state, as compared with FIG. 2 in which the handle member 1 is disposed in the case 6 as before. Further, the handle rotation angle restricting portion 12 restricts the rotation operation so that the handle member 1 stops at an appropriate position.
[0021]
In the state of FIG. 4, when the circuit breaker is switched from the off state to the on state, the handle operating unit 2 is rotated in the direction of the load side terminal 5. When the handle link mounting portion 14 rotates from the initial position and exceeds the dead line connecting the handle member rotating shaft 3 and the link mounting portion 10, the balance of the link is lost, and the handle operating portion 2 is biased to the on position. Is done.
[0022]
At this time, the link mounting portion 10 is linearly moved downward in the figure by a guide 11 that is linearly disposed vertically below the rotation shaft 3 of the handle member 1. Further, the rotation operation is restricted by the handle rotation angle restricting portion 13 so that the handle member 1 stops at an appropriate position.
[0023]
Next, when the circuit breaker shown in FIG. 3 is changed from the on state to the off state, the handle operating unit 2 is rotated in the direction of the power supply side terminal 4. When the handle link mounting portion 14 rotates from the initial position and exceeds the line connecting the handle member rotating shaft 3 and the link mounting portion 10, the balance of the link is lost, and the handle operating portion 2 is biased to the off position. Is done.
[0024]
At this time, the link mounting portion 10 is linearly moved upward in the figure by a guide 11 that is linearly disposed vertically below the rotation shaft 3 of the handle member 1. Further, the handle rotation angle restricting portion 12 restricts the rotation operation so that the handle member 1 stops at an appropriate position.
[0025]
FIGS. 5 (a) and 5 (b) show operation diagrams in the on-off state when the handle member 1 of the circuit breaker is normally provided and when it is inverted, in either case. The movement locus of the link mounting portion 10 when changing from the on state to the off state and from the off state to the on state is reciprocated up and down in the figure along the guide 11, and the link mounting portion 10 is turned on and off. (The height in the figure) and the rotation angle a of the handle member 1 between on and off do not change.
[0026]
FIG. 6A is an example of an operation diagram of a conventional circuit breaker. In the conventional example, there is a restricting portion 801 for restricting the movement of the link attaching portion 14 in order to restrict the movement after the handle link attaching portion 14 exceeds the dead line. The restricting portion 801 is disposed between the handle rotating shaft 3 and the link attaching portion 10, and the guide 802 is formed so as to draw a circular arc obliquely. When the handle is reversed and disposed in the case 6 as shown in FIG. 6B, the restricting portion 801 interferes with the operation locus of the handle member 1 and the link 7 and cannot be rotated. The movement restricting portion of the handle link attaching portion 14 when it is set to the side is lost and cannot be kept on. In the off position, the rotation angle of the handle is a ′, which is different from the case of (a), which is inconvenient. Therefore, when the handle is reversed and disposed in the case 6, the circuit breaker cannot be turned on and off. However, in the circuit breaker shown in the present embodiment, the guide 11 for restricting the movement locus of the link mounting portion on the dead line, and the handle rotation angle restricting portion for uniformly restricting the rotation angle of the handle around the dead line. 12 and 13, and the movement trajectory of the pressing member 8 and the link mounting portion 10 is the same even when the handle member is reversed and mounted, and the on-holding of the contact device determines the rotation angle of the handle. Since the rotation angle restricting portion restricts the holding member and the link attaching portion so as to be equal to the movement locus (dead line) of the link attaching portion, the operation of the mechanism can be the same even if the handle is reversed. .
[0027]
As a result, even if the power supply side terminals are mounted facing the copper bar of the distribution board, the on / off operation direction of the handle is reversed by the circuit breakers on both sides of the copper bar as shown in FIG. There are two types of circuit breakers that can be operated in the same direction with respect to the distribution board as shown in FIG. It can be obtained simply by grouping at the time of manufacture.
[0028]
In addition, although the handle rotation angle restricting portion is the handle operating portion opening edge in claim 2, it can also be formed by making the side surface of the handle member 1 concave and protruding from the case 6, for example. is there. Further, the guide 11 does not have to be completely coincident with the dead line connecting the rotating shaft 3 of the handle member and the link mounting portion 10, and some deviation is forgiven.
[0029]
【The invention's effect】
As described above, according to the first and second aspects of the present invention, when the connection method differs between the power supply side connection terminal and the load side connection terminal, the power supply side connection terminal side faces the mounting bus bar provided on the distribution board. Even if the circuit breaker is mounted in such a manner, the handle operation direction for changing the circuit breaker from the on state to the off state is the same as that of the distribution board. Can be provided.
[Brief description of the drawings]
FIG. 1 shows an internal structure in an ON state when a handle member of a circuit breaker is normally provided.
FIG. 2 shows an internal structure in an off state when a handle member of a circuit breaker is normally provided.
FIG. 3 shows an internal structure in an ON state when a handle member of a circuit breaker is provided by being inverted.
FIG. 4 shows an internal structure in an off state when a handle member of a circuit breaker is provided by being inverted.
FIG. 5 shows an operation diagram in an on-off state when the handle member of the circuit breaker is normally provided and when it is inverted.
FIG. 6 shows an example of an operation diagram in a conventional circuit breaker.
FIG. 7 is an explanatory view of a handle operating direction of a distribution board using a conventional circuit breaker.
FIG. 8 is an explanatory diagram of a handle operating direction of a distribution board using the circuit breaker of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Handle member 2 Handle operation part 3 Handle member rotating shaft 4 Power supply side terminal 5 Load side terminal 6 Case 7 Link 8 Holding member 9 Opening edge part 10 Link attachment part 11 Guide 12 Handle rotation angle restriction part 13 Handle rotation angle restriction part 14 Link mounting portion 801 Restricting portion 802 Guide

Claims (1)

A handle member that is rotatably disposed in the case and switches between an on state and an off state of the circuit breaker;
One end is attached to the handle link attaching portion of the handle member, and the link operates in conjunction with the turning operation of the handle member.
The other end of the link is connected, and a pressing member that operates in conjunction with the rotation of the handle member via the link;
Including a contact device that turns on and off in conjunction with the operation of the handle via the pressing member,
The on-holding of the contact is performed by setting a line connecting the pressing member and the link mounting portion and the rotation center of the handle member as a dead line, and restricting the movement of the handle link mounting portion beyond the dead line and beyond. Circuit breakers
The direction from the rotating shaft of the handle member toward the bottom of the case, which is the mounting surface to the distribution board of the circuit breaker, is the vertical direction,
Regardless of the on / off operation of the handle member, the dead line is fixed in the vertical direction,
A guide portion for restricting the movement trajectory of the pressing member and the link attachment portion to be fixed in the vertical direction;
While arranged vertically below the rotation axis of the handle member and on both sides of the movement locus ,
An opening edge portion that projects the operation portion of the handle member from the case is provided as a rotation angle restricting portion that uniformly restricts a rotation angle associated with an on / off operation of the handle member around the deadline,
Said handle member, by mounting isosamples turned over with respect to the link, it is to reverse the on-off operation direction of said handle member in a direction connecting the power supply side of the circuit breaker load side,
Circuit breakers characterized in that even when the circuit breakers are attached to the copper bars provided on the distribution board so that the power supply side connection terminals face each other, the handle operating directions of the circuit breakers can be the same . .

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