JP5156049B2 - Terminal block and electrical equipment storage box equipped with the terminal block - Google Patents

Description

  The present invention relates to a terminal block on which wiring work is performed at the time of construction and an electric equipment storage box including the terminal block.

  Conventionally, electrical equipment storage boxes such as distribution boards and control panels have been equipped with terminal blocks that relay electrical wires (internal wires) from electrical equipment housed inside and external wires (external wires). (For example, refer to Patent Document 1). In such a terminal block, the manufacturer of the electrical equipment storage box connects the internal electric wires from the electrical equipment in the electrical equipment storage box. On the other hand, the external electric wire is connected by the construction contractor at the site after the electrical equipment storage box is installed at the site.

JP 2005-69638 A

  The terminal block to which the internal electric wire and the external electric wire are connected as described above is shipped with the internal electric wire connected, and only the external electric wire is connected on site. However, when an on-site contractor connects an external electric wire in the electrical equipment storage box, the connection location is not known, and there is a possibility that the connection of the internal electric wire will be accidentally changed, and it is easy to cause a problem of miswiring. There was a problem.

  The present invention has been made in view of the above-mentioned reasons, and its purpose is to prevent a site contractor from changing the connection of an internal wire by mistake, and to reduce a problem of erroneous wiring. And it is providing the electrical equipment storage box provided with this terminal block.

The terminal block according to the present invention is a terminal block arranged in an electrical equipment storage box in which electrical equipment is stored, and includes an internal connection portion for connecting an electric wire from the electrical equipment, and an exterior of the electrical equipment storage box. An external connection part for connecting the electric wire from the electric connection part, a conductive part electrically connecting between the internal connection part and the external connection part, and an insulating material, the internal connection part and the external A terminal block main body having a side connection portion provided on one surface; and a terminal cover for concealing only the internal connection portion of the external connection portion and the internal connection portion on one surface of the terminal block main body. It is characterized by that.

  In the present invention, the internal side connection portion and the external side connection portion are arranged side by side along one direction on one surface of the terminal block main body, and the terminal block main body includes the internal side connection portion and the external side. A partition wall portion erected between the connection portions, a first partition wall portion erected on both sides of each of the inner side connection portions, and both sides of each of the outer side connection portions And at least one of the first and second partition walls is formed with a notch in a surface facing each other in the one direction, and the terminal cover includes the notch It is desirable that the first partition wall portion be disposed on the first partition wall.

  In this invention, the terminal cover is formed with a crease, and is opened and closed along the crease, so that a state of concealing the internal side connection portion and a state of exposing the internal side connection portion may be switched. desirable.

  In this invention, it is preferable that the terminal cover conceals the partition wall portion together with the inner side connection portion, and a space is provided between the terminal cover and the partition wall portion.

The electrical device storage box of the present invention includes an electrical device, an internal connection portion for connecting an electric wire from the electrical device, an external connection portion for connecting an external electrical wire, the internal connection portion and the external connection portion. A conductive part that is electrically connected between the terminal block body, the inner side connection part and the outer side connection part provided on one side, and the external side connection on one side of the terminal block body. And a terminal block including a terminal cover for concealing only the inner-side connecting portion among the inner-side connecting portion and the inner-side connecting portion.

  As described above, according to the present invention, there is an effect that it is possible to prevent the site contractor from changing the connection of the internal electric wire by mistake and to reduce malfunctions of erroneous wiring.

(A) (b) (c) It is a top view which shows the structure of a terminal block. It is a perspective view which shows a structure same as the above. It is a partially exploded perspective view which shows a structure same as the above. It is a top view which shows the structure of a terminal block main body same as the above. It is a perspective view which shows the structure of a terminal cover same as the above. It is a partial cross section figure which shows a terminal block main body and a terminal cover same as the above. It is a partially exploded perspective view which shows another structure same as the above. It is a top view which shows the structure of the electric equipment storage box provided with the terminal block same as the above.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment)
1 to 3 show the overall configuration of the terminal block A of the present invention. The terminal block A is arranged in an electric device storage box in which electric devices are stored, and includes an electric wire L1 (internal electric wire L1) from the electric device and an electric wire L2 (external electric wire L2) from the outside of the electric device storage box. Used to relay. The insulating terminal base body 1, the terminal fitting 2, the terminal screw 3, and the terminal cover 4 are configured.

  The terminal block main body 1 is a synthetic resin molded product of an insulating material, and mounting members 11 are respectively provided on the sides of the base 10 in both directions. On one surface of the base 10 between the pair of attachment members 11, a partition wall portion 12 that bisects both end directions (perpendicular directions in both directions) is erected, and is further divided into approximately two portions by the partition wall portion 12. In each region, partition walls 13 (13A, 13B) are provided to divide the both sides of the base 10 into approximately three equal parts. The partition wall 13 is provided adjacent to only one attachment member 11. On one surface of the base 10, six pedestal portions 14 divided by a partition wall portion 12 and a partition wall portion 13 are formed, and in each pedestal portion 14, the terminal screws 3 and the conductive members of the terminal fitting 2 are vertically moved. The insertion hole 15 (refer FIG. 4) penetrated to is formed.

  The attachment member 11 includes a side wall portion 11a formed on both side surfaces of the base 10 and fixed pieces 11b respectively extending in the both side directions from the lower end of the side wall portion 11a. The fixed piece 11b is formed with a U-shaped cutout portion 11c at substantially the center in both end directions, and the terminal block A is fixed in the electrical equipment storage box by inserting an attachment screw (not shown) through the cutout portion 11c. Is done.

  And the terminal board of the terminal metal fitting 2 is mounted in each of the six base parts 14. FIG. The terminal fitting 2 is made of a conductive metal, and a screw hole (not shown) facing the insertion hole 15 is formed in the terminal plate. The electric wire is connected to the terminal fitting 2 by tightening the terminal screw 3 into the screw hole of the terminal fitting 2. Each terminal fitting 2 placed on the pair of pedestal portions 14 facing both ends across the partition wall portion 12 extends downward from the terminal plate of the terminal fitting 2 and passes through the insertion hole 15 (not shown). They are electrically connected to each other in the base 10 via members (conductive portions). That is, the pair of terminal fittings 2 arranged along the both end directions with the partition wall 12 interposed therebetween are electrically connected to each other.

  In the terminal block A configured as described above, the internal electric wire L1 from the electric device arranged in the electric device storage box is connected by the three terminal fittings 2 and the terminal screw 3 provided on one end side of the base 10. The internal side connection part X1 which comprises is comprised. Further, the three terminal fittings 2 and the terminal screws 3 provided on the other end side of the base 10 constitute an external connection portion X2 for connecting an external electric wire L2 from the outside. Therefore, the terminal block A relays the internal electric wire L1 connected to the internal side connection portion X1 and the external electric wire L2 connected to the external side connection portion X2.

  In the following description, the partition wall portion 13 on the inner side connection portion X1 side is the partition wall portion 13A (first partition wall portion), and the partition wall portion 13 on the outer side connection portion X2 side is the partition wall portion 13B (second partition wall portion). Called.

  And in this embodiment, the terminal cover 4 which conceals the internal side connection part X1 to which the internal electric wire L1 is connected is provided. The terminal cover 4 is formed in a rectangular plate shape with an insulating material, and is attached on the partition wall portion 13A of the inner side connection portion X1 between the side wall portions 11a. The upper surface of the partition wall portion 13A protrudes from the upper surface of the partition wall portion 12, and a substantially U-shaped cutout portion 13a is formed on the end surface of the partition wall portion 12 at the protruding portion of the partition wall portion 13A. (See FIG. 3). On the other hand, the terminal cover 4 forms a hinge piece 4a that can be opened and closed in the vertical direction by forming a substantially U-shaped cut opening that opens the inner side connection portion X1 side in the vicinity of the portion facing the notch portion 13a. doing. Then, the hinge piece 4a is bent downward, and the tip edge of the hinge piece 4a is engaged with the notch 13a formed in the partition wall portion 13A on the inner side connection portion X1 side.

  Furthermore, on the upper surface of the partition wall 13A, a protrusion 13c is formed at the end of the internal electric wire L1 on the incoming line direction side, and the positional deviation in the both ends of the terminal cover 4 is restricted.

  Further, the upper surface of the partition wall portion 13B protrudes from the upper surface of the partition wall portion 12, and a substantially U-shaped cutout portion 13b is formed on the end surface of the partition wall portion 12 at the protruding portion of the partition wall portion 13B. (See FIG. 3). On the other hand, a movable piece 4c is provided on the other end side of the terminal cover 4 by a crease 4b formed along both sides, and the movable piece 4c is configured to be opened and closed in the vertical direction with the crease 4b as a fulcrum. ing. Then, the movable piece 4c is bent downward and locked to the notch 13b formed in the partition wall 13B on the external connection portion X2 side.

  Thus, the terminal cover 4 is attached on the partition wall 13A by locking the terminal cover 4 to the notches 13a and 13b provided on the end faces of the partition walls 13A and 13B. The terminal cover 4 can be intentionally removed from the terminal block body 1 and is configured to be detachable from the terminal block body 1. In addition, the structure which provides only one of the notches 13a and 13b may be sufficient.

  That is, the terminal cover 4 conceals the inner side connection portion X1 from above, and it is difficult to turn the terminal screw 3 of the inner side connection portion X1. Moreover, the terminal cover 4 clarifies the responsibility classification between the manufacturer of the electrical equipment storage box and the on-site contractor. Therefore, when the terminal block A of the present embodiment is shipped in a state where the internal electric wire L1 is connected to the internal side connection portion X1 in the electric equipment storage box, the site contractor mistakenly sets the internal side connection portion X1. Therefore, it is possible to suppress the change of the wiring, and it is possible to reduce the problem of erroneous wiring. Furthermore, by printing the terminal name for each corresponding terminal on the terminal cover 4, it is possible to further reduce erroneous wiring.

  Further, the terminal cover 4 is formed with folds 4d along both sides in the vicinity of the boundary between the inner side connection portion X1 and the partition wall portion 12, and as shown in FIG. A movable piece 4e is provided on one end side. The movable piece 4e is configured to be opened and closed in the vertical direction with the crease 4d as a fulcrum. Therefore, if the movable piece 4e is rotated upward, the inner side connection portion X1 is exposed upward, so that the manufacturer of the electrical equipment storage box has attached the terminal cover 4 to the terminal block body 1, Wiring on the inner side connection portion X1 side can be performed, and workability is improved. Furthermore, by printing the terminal name for each corresponding terminal on the terminal cover 4, it is possible to reduce erroneous wiring.

  Further, as shown in FIG. 6, since the upper surfaces of the partition walls 13 </ b> A and 13 </ b> B protrude from the upper surface of the partition wall portion 12, there is a gap space K between the lower surface of the terminal cover 4 and the upper end of the partition wall portion 12. Is formed. Therefore, as shown in FIG. 7, a temperature detection element S such as a temperature fuse or a temperature sensor can be arranged in the gap space K. Therefore, the temperature detection element for preventing the terminal block A from burning without increasing the size of the terminal block A. S can be easily incorporated. The element incorporated in the gap space K is not limited to the temperature detection element for preventing burnout.

  FIG. 8 shows the configuration of an electrical equipment storage box B that houses the terminal block A of the present embodiment.

  The electrical equipment storage box B constitutes a casing by a case main body 100a formed in a rectangular box shape with one surface opened and a cover 100b covering the opening of the case main body 100a. In the case main body 100a, a power conversion unit 101 including each circuit board of a DC / DC converter and an AC / DC converter, a backup power supply unit 102 including a battery, and a controller unit 103 for controlling the operation of the power conversion unit 101 are arranged. ing. The cover 100b is provided with an opening 100c at a position facing the operation unit 103a of the controller unit 103, and the operation unit 103a is exposed to the outside through the opening 100c.

  In the up / down / left / right directions shown in FIG. 8, the power conversion unit 101 is disposed substantially above the center of the case main body 100a, and the backup power supply unit 102 and the controller unit 103 are biased toward the left and right ends of the case main body 100a. Each is arranged.

  In the lower part of the case main body 100a, input terminals A1, A2 using the terminal block A described above, an output terminal 110, and a communication terminal 111 are arranged.

  The internal terminal L1 is wired between the input terminal A1 and the input of the DC / DC converter of the power converter 101, and the input terminal A2 is connected to the input of the AC / DC converter of the power converter 101. Is wired. The output terminal 110 is wired between the outputs of the power conversion unit 101 (DC / DC converter and AC / DC converter outputs), and the communication terminal 111 is connected to the communication terminal of the controller unit 103. Wired with.

  The wiring of the internal electric wire L1 to the input terminals A1 and A2, and the internal wiring of the output terminal 110 and the communication terminal 111 are performed by the manufacturer of the electrical equipment storage box B, and after the internal wiring including the internal electric wire L1 is completed, The electric equipment storage box B is shipped to the construction site. In the electrical equipment storage box B at the time of shipment, the inner side connection portion X1 of the input terminals A1 and A2 is concealed by the terminal cover 4. In FIG. 8, the internal wiring of the output terminal 110 and the communication terminal 111 is concealed by a cover C provided around the terminals.

  At the construction site, after the contractor installs the electric equipment storage box B on the wall surface or the like, the external electric wires are wired. An external electric wire L2 is wired between the input terminal A1 and a distributed power source such as a solar power generation device or a fuel cell power generation device, and an external electric wire L2 is wired between the input terminal A2 and a commercial power source. Further, an external electric wire L3 is wired between the output terminal 110 and a DC device operating with a DC power supply. The communication terminal 111 is connected to a signal line L4 with an external device (for example, a personal computer or a management server via a LAN) that monitors and controls power control by the controller unit 103.

  The wiring work of the external electric wire L2 at this construction site is because the internal side connection portion X1 of the input terminals A1 and A2 is concealed by the terminal cover 4, and the construction contractor at the site erroneously changes the connection of the internal electric wire L1. This can be suppressed and malfunctions of erroneous wiring can be reduced.

A Terminal block 1 Terminal block body 2 Terminal bracket 3 Terminal screw 4 Terminal cover X1 Internal connection X2 External connection L1 Internal wire L2 External wire

Claims (5)

A terminal block arranged in an electrical equipment storage box in which electrical equipment is stored,
An internal side connecting part for connecting an electric wire from the electric device;
An external connection part for connecting an electric wire from the outside of the electrical equipment storage box;
A conductive part that electrically connects the internal side connection part and the external side connection part;
A terminal block body made of an insulating material, the inner side connecting portion and the outer side connecting portion being provided on one surface;
In one surface of the terminal block main body, a terminal cover that conceals only the internal side connection part among the external side connection part and the internal side connection part ,
A terminal block comprising: The inner side connection portion and the outer side connection portion are arranged side by side along one direction on one surface of the terminal block main body,
The terminal block body includes a partition wall portion erected between the inner side connection portion and the outer side connection portion, and a first partition wall erected on both sides of each of the inner side connection portions. And a second partition wall erected on both sides across each of the external connection portions,
At least one of the first and second partition walls is formed with a notch in a surface facing each other in the one direction,
The terminal block according to claim 1, wherein the terminal cover includes an engaging portion that engages with the cutout portion and is disposed on the first partition wall portion.   The terminal cover is formed with a crease, and is opened and closed along the crease to switch between a state of concealing the internal side connection part and a state of exposing the internal side connection part. Item 1 or 2 terminal block.   4. The terminal block according to claim 1, wherein the terminal cover conceals the partition wall portion together with the inner side connection portion, and provides a space between the terminal cover and the partition wall portion. . Electrical equipment,
Internal side connection part for connecting electric wires from the electrical equipment, external side connection part for connecting electric wires from the outside, conductive part for electrically connecting the internal side connection part and the external side connection part, insulation A terminal block main body made of a conductive material, wherein the inner side connection portion and the outer side connection portion are provided on one surface, and on one surface of the terminal block main body, the outer side connection portion and the inner side connection portion, the inner side And a terminal block having a terminal cover for concealing only the side connection portion.

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