JP6757511B2 - Terminal block - Google Patents

Description

The present invention relates to a terminal block arranged in a housing in which a switchboard or an electric device is incorporated.

This type of terminal block is described in, for example, Patent Document 1 below. The terminal block 100 of Patent Document 1 is housed in a housing (electronic device) and used. Then, as shown in FIG. 3, a flat plate-shaped base 101 and a plurality of conductors 102 arranged on the surface of the base 101 in an insulated state are provided. Since these conductors 102 are mounting portions 103 and 104 for connecting terminals of electric wires, they are hereinafter referred to as mounting portions. Each of the mounting portions 103 and 104 is formed in a flat plate shape (strip shape), and one side portion in the width direction is used as the one mounting portion 103, and a primary electric wire (input side electric wire) is electrically connected to this by a set screw B in the width direction. The other side portion is used as the other mounting portion 104, and the secondary electric wire (output side electric wire) is electrically connected to the other mounting portion 104 by the set screw B. Reference numeral 105 in the drawing is a partition wall for partitioning a plurality of conductors 102 with an insulating member.

In the terminal block 100 of Patent Document 1, the base 101 is configured to be rotatable around the vertical axis arranged at the center in the width direction for the purpose of improving workability on the mounting portions 103 and 104. The set screw B can be kept at a desired position around the vertical axis by rotating the set screw B around the vertical axis by a predetermined angle.

By the way, in recent years, with the miniaturization of electronic components, the terminal block and the housing itself in which the terminal block is housed (for example, a switchboard or the like in a power supply facility) have also been miniaturized. In such a recent situation, like the terminal block 100 described in Patent Document 1, the base 101 is rotated by a predetermined angle around the vertical axis, and the set screw B is kept at a desired position around the vertical axis. Even so, it is difficult to secure a work space for connecting the electric wires to the mounting portions 103 and 104 and inspecting the connection state.

In that case, for example, a misidentification such as connecting an electric wire to an erroneous mounting portion (conductor) may occur. In order to secure a work space in order to solve such a problem, it is conceivable to further reduce the size of the terminal block without changing the size of the housing such as the switchboard.

Jikkai Sho 57-198882

However, if the terminal block, which has been miniaturized in recent years, is further miniaturized, the work on the mounting portions 103 and 104 becomes more difficult, and the mounting portions include the one mounting portion 103 and the other mounting portion 104. There is a limit to miniaturization because it is necessary to secure an insulation distance between them.

Therefore, an object of the present invention is to provide a terminal block capable of securing a working space for the mounting portion in the housing while ensuring an insulation distance in the mounting portion.

The terminal block according to the present invention is a terminal block installed in a housing, has conductivity, is rotatable around a support shaft, and has a width in a direction orthogonal to the axis of the support shaft. It has a mounting part that extends in the direction, and the mounting part has a one-sided mounting part that allows the connection terminal of the primary wire to be detachably attached to one end in the width direction, and a connection terminal for the secondary wire at the other end in the width direction. Is integrally provided with the other mounting portion that can be detachably mounted, and at least one of the one mounting portion and the other mounting portion is inclined or orthogonal to the direction along the width direction. It is characterized by.

According to such a configuration, in the mounting portion, at least one of the one mounting portion and the other mounting portion is provided in a direction inclined or orthogonal to the width direction, so that the one mounting portion and the other mounting portion are provided. On the other hand, even if the mounting parts are not on the same plane, the mounting part can be miniaturized in the width direction while ensuring the insulation distance from each other, and the mounting part can rotate around the support shaft, so that the mounting part can be rotated in the housing. Then, around the support shaft, keep one mounting part or the other mounting part in a position where it is easy for the operator to work, and use a work space that can be secured in the housing by the amount of the miniaturized mounting part, and use one mounting part or the other. Work on the primary side wire or the secondary side wire for the mounting part.

As one aspect of the terminal block according to the present invention, the width is substantially the same as or smaller than that of the mounting portion, a base for mounting the mounting portion is provided, and the base is rotatable around the support shaft. Is preferable.

According to this configuration, even if the mounting portion is mounted on the base, the base has the same width as the mounting portion and the diameter of the rotation locus around the support shaft is not increased, so that the work space is reduced. It won't end up.

As another aspect of the terminal block according to the present invention, a plurality of the bases are arranged in a row in the direction in which the support shaft extends, and one of the facing surfaces of the two adjacent bases facing each other. The support shaft is formed so as to project toward the other facing surface, and a shaft hole that allows the support shaft to be inserted and removed and rotated is formed inward on the facing surface of the other base. Is preferable.

According to such a configuration, the plurality of bases are connected in the extending direction of the support shaft, and can rotate individually in the connected state. Therefore, by rotating only the base to be worked on, it is possible to reliably perform the work on the mounting portion of the rotated base.

As another aspect of the terminal block according to the present invention, it is preferable that the support shaft and the shaft hole are formed at the central portion in the width direction of the facing surface of the base.

According to this configuration, since the base rotates with the support shaft passing through the center of the base as the rotation axis, the base rotates around the support shaft with the width dimension of the base as the diameter, and rotates with the minimum rotation locus. It can be done and does not reduce the work space.

As another aspect of the terminal block according to the present invention, the base is used when the connection terminal of the primary electric wire is superposed on the one mounting portion and the connection terminal of the secondary electric wire is superposed on the other mounting portion. It is preferable to provide a guide for guiding the connection terminals in the overlapping direction.

According to such a configuration, the connection terminals of the primary side electric wire can be superposed on one mounting portion and the connection terminals of the secondary side electric wire can be superposed on the other mounting portion so that each connection terminal is aligned with the guide.

As another aspect of the terminal block according to the present invention, it is preferable that the connection terminal superposed on the one mounting portion and the connecting terminal superposed on the other mounting portion are covered with an insulating cover.

According to such a configuration, by superimposing the insulating cover on the connection terminal, the connection terminal can be insulated and protected by the insulating cover. Therefore, the work of attaching / detaching the connection terminal to the set screw can be safely performed.

As described above, according to the present invention, it is possible to obtain an excellent effect that a working space for the mounting portion can be secured in the housing while ensuring the insulation distance in the mounting portion.

FIG. 1 is a diagram showing a terminal block according to an embodiment of the present invention. FIG. 2 is an exploded perspective view of the terminal block according to the same embodiment, and is an exploded perspective view showing only the uppermost terminal block and the lowermost terminal block. FIG. 3 is a diagram showing a conventional terminal block.

An example in which the terminal block according to the embodiment of the present invention is installed on a switchboard provided in a power distribution facility will be described with reference to the drawings. As shown in FIGS. 1 and 2, the terminal block 1 according to the present embodiment is provided on the upper side and the lower side of a plurality of terminal blocks T connected in the vertical direction and a terminal block group in which the terminal blocks T are connected. It is provided with a pair of upper and lower supports 5 and 5 that rotatably support around the axis A, which is the vertical axis.

Each terminal block T includes a base 10 that is rotatable around the axis A, and a plurality of mounting portions 11 that are supported by the base 10 and to which the primary side electric wire C1 and the secondary side electric wire C2 are connected. ..

The mounting portion 11 is a metal conductor, and is formed by bending a portion closer to one side in the longitudinal direction in the middle portion of the plate-shaped (belt-shaped) conductor in the longitudinal direction. In the mounting portion 11, the bent short piece on one side (one side end in the width direction) is the one mounting portion 110, and the long piece on the other side (the other end in the width direction) is the other mounting portion 111. That is, both the one mounting portion 110 and the other mounting portion 111 are integrally formed in a plate shape, and the connection terminal Y of the primary side electric wire C1 is detachably stacked on the surface of the one mounting portion 110 by a superposition means. The connection terminal Y of the secondary side electric wire C2 is detachably overlapped and attached to the surface of the other attachment portion 111 by a superposition means.

The superposition means includes an insulating cover 7, a washer W, and a set screw B. An insertion hole 12 through which a set screw B is inserted is formed in each of the one mounting portion 110 and the other mounting portion 111. That is, the connection terminal Y of the primary side electric wire C1 is superposed on the surface of the one mounting portion 110 via the insulating cover 7, the washer W, and the set screw B through which the insulating cover 7 and the washer W are inserted, and the one mounting portion. It is electrically connected to 110. The connection terminal Y of the secondary side electric wire C2 is superposed on the surface of the other mounting portion 111 via the insulating cover 7, the washer W, and the set screw B through which the insulating cover 7 and the washer W are inserted, and the other mounting portion 111. Is electrically connected to.

Further, since the two mounting portions 110 and 111 are in a relationship in which the center lines a and a intersect each other on the same plane and are not located on the same straight line, they are in a positional relationship in which a sufficient insulation distance can be obtained. Therefore, the base 10 can be miniaturized. That is, the rotation locus of the base 10 can be reduced, and the rotation is not hindered by other terminal blocks 1 in the vicinity.

The base 10 supports the mounting portion 11 described above, and is configured to be rotatable around three support shafts, which will be described later, arranged on the axis A. The base 10 includes a base main body 10a and an auxiliary base portion 10b. In the base body 10a, one direction (front-back direction) orthogonal to the axis A direction (vertical direction) is the longitudinal direction, the direction along the axis A direction is the width direction, and the other direction orthogonal to the axis A direction is the thickness direction. It is formed in a rectangular shape. One of the surfaces facing each other in the thickness direction is a mounting surface 14 on which the mounting portion 11 is overlapped.

On the mounting surface 14, a partition wall 20 is erected at one end in the width direction thereof. The partition wall 20 is formed in a flat plate shape, and is formed to have a slightly longer length in the longitudinal direction than the base body 10a. An auxiliary base portion 10b is integrally provided on the plate surface of the partition wall 20. The auxiliary base portion 10b is formed in a rectangular parallelepiped shape in which the longitudinal dimension and the width direction dimension are shorter than those of the base body 10a and the height from the mounting surface 14 is lower than that of the partition wall 20. The auxiliary base portion 10b is arranged to face the mounting surface 14 with a gap.

A screw hole 13 for the set screw B is formed on the other side of the mounting surface 14 in the longitudinal direction. One of the surfaces of the auxiliary base portion 10b facing in the longitudinal direction is the contact surface 15 with which the one mounting portion 110 abuts, and the screw hole 13 of the set screw B is formed on the contact surface 15. Has been done.

The other mounting portion 111 of the mounting portion 11 is inserted between the auxiliary base portion 10b and the mounting surface 14 with the longitudinal direction thereof as the longitudinal direction of the base main body 10a.

Further, the width dimension of the base body 10a and the width dimension of the other mounting portion 111 of the mounting portion 11 are the same. As a result, the terminal block T can be miniaturized and the rotation locus can be made small.

Further, among the plurality of bases 10 connected in the extending direction (vertical direction) of the axis A, on the facing surface of the base main bodies 10a adjacent to each other in the vertical direction, the upper surface (opposing surface) of the lower base main body 10a. A support shaft 3 projecting upward (toward the facing surface of the upper base body 10a) along the axis A in the central portion in the width direction, and a lower surface of the other (upper) base body 10a ( A shaft hole 4 formed along the axis A inward in the central portion in the width direction of the facing surface) is provided so that the support shaft 3 can be inserted and removed and can be rotated.

Then, a plurality of bases 10 (five in this embodiment) are connected to the shaft hole 4 of the upper base body 10a, and the support shaft 3 of the lower base body 10a is inserted, which is the same as this. By repeating the connection, the plurality of bases 10 are connected in a row in the vertical direction, and the plurality of bases 10 are individually rotatably connected around the axis of the support shaft 3, and both mounting portions 110, Each of the 111s is configured to be repositionable to a desired position (position facing the operator).

A concave bearing portion 52 into which the support shaft 3 of the uppermost base 10 can be inserted is provided on the lower surface of the upper support 50. Further, although not shown, the number of the terminal block 1 is displayed on the upper support 50. The operator confirms this number and inspects the terminal block T, which is the work target.

At the center of the upper surface of the lower support 50 in the width direction, a rotating shaft 53 inserted into the shaft hole 4 of the lowermost base body 10a, and a rotating shaft 53 for rotating the base 10 protrudes. It is installed.

A partition wall 20 is formed so as to project along the width direction (front-back direction) at the upper end of the left side surface of the base body 10a. The partition wall 20 has a flat plate shape and serves as a guide for guiding the insertion direction and the overlapping direction of the connection terminal Y with respect to the one mounting portion 110 and the other mounting portion 111. That is, the direction in which the primary side electric wire and C1 and the secondary side electric wire C2 are connected (inserted direction) is determined for the partition wall 20.

The insulating cover 7 has an area that can cover the connection terminal Y, and a through hole 70 through which the set screw B is inserted is formed in the central portion thereof to insulate the connection terminal Y and make surface contact with the connection terminal Y. It also has the function of a holding plate. Further, in the present embodiment, the insulating cover 7 is formed in, for example, a quadrangular shape, and is overlapped in the same direction as the direction in which the connection terminals Y are overlapped.

Further, fluorescent paint is applied to the contact surface 15, the one mounting portion 110 of the mounting portion 11, and the insulating cover 7 on the side to which the primary side electric wire C1 is connected, and the primary side electric wire C1 is connected. Is displayed.

Next, a usage mode of the terminal block according to the present embodiment will be described. It is assumed that one mounting portion 110 of the base 10 is located on the front side so as to face the operator, and the other mounting portion 111 is located on the back side (back side).

When the operator opens the door of the switchboard (not shown), one mounting portion 110 of the terminal block 1 faces the operator. In this state, visually confirm which terminal block T of the terminal block 1 is to be inspected, and base the terminal block T (in this embodiment, the uppermost terminal block T) to be inspected. The base 10 is rotated 90 degrees, and the other mounting portion 111 located on the back side is arranged on the front side.

At this time, since the primary side electric wire C1 connected to the one mounting portion 110 and the secondary side electric wire C2 connected to the other mounting portion 111 are in an intersecting positional relationship, the base 10 is placed around the axis of the support shaft 3. Even if it is rotated, the rotation locus of the entire terminal block 1 becomes smaller than that of the terminal block 100 of FIG. The reason for this will be explained below. However, it is assumed that the terminal block 100 of FIG. 3 and the terminal block of the present embodiment are attached to a switchboard having the same width.

In the case of the terminal block 100 of FIG. 3, one mounting portion 103 and the other mounting portion 104 are provided at both ends of the flat plate-shaped mounting portion 102. Further, the connection direction of the primary side electric wire C1 and the secondary side electric wire C2 with respect to both the attachment portions 103 and 104 is determined by the pair of partition walls 105 arranged so as to sandwich the both attachment portions 103 and 104. Specifically, when the primary side electric wire C1 and the secondary side electric wire C2 are connected to the one mounting portion 103 and the other mounting portion 104, respectively, the primary side electric wire C1 and the secondary side electric wire C2 are on the same straight line (width of the mounting portion 102). It is located on the center line extending in the direction), and the primary side electric wire C1 and the secondary side electric wire C2 project outward from both ends of the mounting portion 102. That is, the base 101 rotates with the primary side electric wire C1 and the secondary side electric wire C2 as the diameters, and the rotation locus becomes larger by that amount, and the rotation of the base 101 is restricted by hitting the other terminal block 1. ..

On the other hand, in the case of the terminal block 1 of the present embodiment, the primary side electric wire C1 and the secondary side electric wire C2 are not located on the same straight line but are in an intersecting positional relationship. Therefore, the base 10 does not rotate with the primary side electric wire C1 and the secondary side electric wire C2 as the diameters, and the rotation locus of the entire terminal block 1 becomes smaller by that amount, and the pair of mounting portions 11 and 12, respectively. The connected primary side electric wire C1 and secondary side electric wire C2 hit the other terminal block 1 and the rotation of the base 10 is not restricted, so that the work space for each of the primary side electric wire C1 and the secondary side electric wire C2 is provided. Can be secured.

With the other mounting portion 111 arranged in the front, the operator loosens the set screw B of the other mounting portion 111 and pulls out the secondary side electric wire C2 connected to the other mounting portion 111 in the direction of the arrow. After completing the required work, such as inserting the secondary side electric wire C2 into the loosened set screw B in the opposite direction and replacing it, or inspecting the continuity state of the secondary side electric wire C2, one mounting part The base 10 of the terminal block T is rotated 90 degrees in the opposite direction so that the 110 faces the front (the position facing the operator).

Therefore, the operator can face any of the mounting portions 110 and 111, and can easily secure a work space for wire replacement and inspection at the position facing the mounting portions 110 and 111. Therefore, it becomes easy to tighten and loosen the set screw with the screwdriver. Further, since the plurality of connected bases 10 can be individually rotated, only the base 10 to be rotated, which is the work target, can be rotated, and the base 10 which is not the work target can be rotated. There is no. Therefore, it is possible to prevent a work error on the terminal block 1.

As described above, according to the terminal block 1 according to the present embodiment, it is possible to secure a working space for the mounting portion in the housing while securing the insulation distance in the mounting portion 11.

The terminal block according to the present invention can be variously modified without being limited to the above embodiment.

For example, in the case of the above embodiment, both mounting portions 110 and 111 are arranged so that the center lines a and a are orthogonal to each other on the same plane, but the center lines intersect each other at an obtuse angle on the same plane. Both mounting portions 110 and 111 may be arranged.

Further, in the case of the above embodiment, the short piece of the mounting portion 11 bent at a right angle to the width direction is designated as one mounting portion 110, and the long piece of the mounting portion along the width direction is designated as the other mounting portion 111. Both ends may be bent at right angles to the same direction with respect to the width direction, and the bent one end may be used as one mounting portion and the bent other end may be used as the other mounting portion. In this case, since both ends of the mounting portion are bent, the width dimension of the mounting portion becomes smaller than that of the above embodiment. That is, it becomes easier to secure a work space. However, when any of the mounting portions is to be arranged at a position facing the operator, the rotation angle (180 degrees) of the base is larger than the rotation angle (90 degrees) of the base 10 in FIG.

Further, in the case of the above embodiment, the rotation center of the base 10 is set on a straight line passing through the center of the base 10, but it is set at a position deviated from the base 10 and both mounting portions 110 and 111. Each of the above may be moved to a position facing the operator.

Further, in the case of the above embodiment, the partition wall 20 is provided, but when there is no need to specify the connection direction of the electric wire to both the mounting portions 110 and 111 and to protect the insulation of both mounting portions 110 and 111, It is not necessary to provide the partition wall 20.

Further, in the case of the above embodiment, the set screw B is used as a connection member for electrically connecting the connection terminals Y to both the mounting portions 110 and 111, but the present invention is not limited to this, and the connection terminal Y is attached. It may be a clip that is sandwiched by the urging force of the urging member.

1,100 ... Terminal block, 10,101 ... Base, 10a ... Base body, 10b ... Auxiliary base, 11,102 ... Mounting, 110, 103 ... One mounting, 111, 104 ... Other mounting, 20, 105 ... Partition wall, 3 ... Rotating shaft, 7 ... Insulation cover, A ... Axis line, a ... Center line of one mounting part and the other mounting part, B ... Set screw, C1 ... Primary wire, C2 ... Secondary side Electric wire, T ... terminal block, Y ... connection terminal

Claims (4)

A terminal block installed inside the housing
A mounting portion that has conductivity, is rotatable around a support shaft, and extends in a width direction that is orthogonal to the axis of the support shaft .
It is provided with a plurality of bases having substantially the same width or a small width as the mounting portion and for mounting the mounting portion .
The mounting portion has a one mounting portion to which the connection terminal of the primary side electric wire can be detachably attached to one end in the width direction and the other to which the connection terminal of the secondary side electric wire can be detachably attached to the other end in the width direction. Equipped with a mounting part integrally
At least one of the one mounting portion and the other mounting portion is inclined or orthogonal to the direction along the width direction .
The plurality of bases are rotatable around the support shaft and are arranged in a row in the direction in which the support shaft extends, so that one of the two opposing surfaces of the two bases adjacent to each other can be rotated. The support shaft is formed on the facing surface so as to project toward the other facing surface, and a shaft hole that enables the support shaft to be inserted / removed and rotated is provided inward on the facing surface of the other base. A terminal block characterized by being formed . The support shaft and the shaft hole is, the terminal block according to claim 1, characterized in that formed in the widthwise central portion of the respective opposing surfaces of said plurality of base. Each of the plurality of bases superimposes the connection terminals of the primary side electric wire on the one mounting portion, and superimposes the connection terminals of the secondary side electric wire on the other mounting portion. The terminal block according to claim 1 or 2 , further comprising a guide for guiding in a direction. One of claims 1 to 3 , wherein the connection terminal superposed on the one mounting portion and the connecting terminal superposed on the other mounting portion are covered with an insulating cover. The terminal block described in.

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