JPH0684556A - Terminal block - Google Patents

Abstract

PURPOSE:To form a terminal block having a desired number of connections in a simple constitution, reduce the number of parts or sorts, and prevent distortion of a conductive bar at the time of tightening a terminal screw. CONSTITUTION:A terminal block A is composed of a conductive bar 2, an insulation body 3, a nut 4 provided at each insulation body 3, a terminal screw 5 threaded with the nut 4, and an installation material 7 for installing the conductive bar 2 on an installation plate 6 to float it. The terminal block is also composed of a base plate part 8 to having the insulation body 3 in parallel on an underside surface of the conductive bar 2, and a side wall 10 having a conductive bar insertion hole 9 provided on the side of the base plate part 8. The nut 4 is engaged in a recessed place 11 formed at an upper surface part of the base plate part 8. The nut 4 and a throughhole 1 in the conductive bar 2 are set to communicate with each other, and a terminal screw 5 inserted through the throughhole 1 is threaded in a screw hole 12 of the nut 4 to install each insulation body 3 on the conductive bar 2. Its length is set so that a lower end of the insulation body 3 is abutting on the installation plate 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a terminal block having a plurality of connecting portions.

[0002]

2. Description of the Related Art A conventional terminal block is constructed by equipping a single device base with a single terminal plate having a plurality of terminal screws. Further, as another conventional example, it has been attempted to divide the device base into a desired number of connections.

[0003]

However, in the case of equipping a single base plate with a single terminal plate having a plurality of terminal screws as in the former conventional example described above, the number of connecting portions is determined. Therefore, if you want more connections than this, there is a shortage of connections, and conversely, if you want a smaller number of connections, there are extra connections and the space occupied by the terminal block is small. There was a problem that it increased unnecessarily.

Further, in the case of dividing the device base into a desired number of connections like the latter conventional example described above, a member for connecting the divided device bodies is required, and the number of parts is reduced. There was a problem of increasing. The present invention has been made in view of the problems of the above-described conventional example, and an object thereof is to achieve a desired number of connections with a simple configuration, and further to reduce the number of parts and types. To provide a possible terminal block.

[0005]

In order to solve the problems of the above-mentioned conventional examples and to achieve the object of the present invention, the terminal block of the present invention is a conductive plate having through holes 1 formed at predetermined intervals. Bars 2, insulators 3 in which a plurality of conductive bars 2 are inserted and are arranged in parallel, nuts 4 provided on each insulator 3, terminal screws 5 screwed to the nuts 4, and conductive bars 2 And a mounting member 7 for floating and mounting the conductive bar 2 on the mounting plate 6.
And a side wall 10 having a conductive bar insertion hole 9 provided on the side of the base plate portion 8 side by side, and the nut 4 is provided in a recess 11 formed in the upper surface portion of the base plate portion 8. When fitted, the nut 4 and the through hole 1 of the conductive bar 2 are vertically communicated with each other, the terminal screw 5 inserted from the through hole 1 is screwed into the screw hole 12 of the nut 4, and the lower end of the insulator 3 is attached. It is characterized in that the length is such that it contacts the plate 6.

[0006]

According to the present invention having the above-described structure, however, a desired number of insulators 3 are inserted into the conductive bar 2 through the conductive bar insertion hole 9 and are arranged in parallel, so that the desired number can be easily achieved. The terminal block can have a connecting portion of In this case, the insulator 3 is composed of the substrate portion 8 arranged in parallel on the lower surface of the conductive bar 2 and the side wall 10 having the conductive bar insertion hole 9 provided on the side of the substrate portion 8, and the upper surface of the substrate portion 8 is formed. The nut 4 is fitted into the recess 11 formed in the portion, the nut 4 and the through hole 1 of the conductive bar 2 are vertically communicated, and the terminal screw 5 inserted from the through hole 1 is inserted into the screw hole 12 of the nut 4. Since the terminal screws 5 are screwed together, the respective insulators 3 are attached to predetermined positions of the conductive bar 2 by screwing the terminal screws 5 into the nuts 4, and the side wall 10 is fixed to the terminal screws 5. This is to prevent escape of the electric wire when connecting the electric wire. Also,
By fitting the nut 4 into the recess 11, the nut 4 is prevented from idling when the terminal screw 5 is tightened. Further, since the lower end of the insulator 3 has such a length as to come into contact with the mounting plate 6, it is possible to prevent the conductive bar 2 from bending when the terminal screw 5 is tightened.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the accompanying drawings. The conductive bar 2 is made of a metal, and a screw hole 2 is formed at one end of the conductive bar 2 as shown in FIG.
6 are formed, and a plurality of through holes 1 are formed from this screw hole 26 along the longitudinal direction of the conductive bar 2 at a constant pitch. An input side terminal screw 27 is screwed into the screw hole 26 of the conductive bar 2.

The insulator 3 is integrally formed of an insulating material and has a sidewall 10 projecting from one end of the substrate portion 8. The substrate portion 8 and the sidewall 10 are oriented in a substantially lateral direction T. It is continuous in a letter shape. As shown in FIGS. 3 and 4, the board portion 8 has lateral edge projections 13 formed at the front and rear, and the upper end portions of the lateral edge projections 13 project slightly above the upper surface of the board portion 8. ing. Further, the end portion of the board portion 8 in the direction opposite to the side wall 10 projects slightly outward from the lateral edge projection 13 to form a fitting portion 14. A connecting projection 15 is provided so as to face toward the user. A recess 11 is provided at the center of the upper surface of the base plate portion 8, and the nut 4 having a quadrangular shape in plan view is fitted into the recess 11. Here, the nut 28 is fitted in the recess 11 so as not to laterally shift,
Further, the upper surface of the nut 4 is flush with the upper surface of the base plate portion 8. Then, the connection groove 1 in which the connection projection 15 is fitted laterally on the side wall 10 side above the recess 11.
6 is formed so as to communicate with the side of the recess 11, and the connecting groove portion 16 is formed so as to penetrate the side wall 10. Side wall 1
0 has conductive bar insertion holes 9 penetrating both sides thereof. The conductive bar insertion holes 9 have their lower ends flush with the upper surface of the substrate portion 8 and communicate with the connection groove portions 16. There is. Vertical edge protrusions 17 thicker than the side walls 10 are formed at the front and rear ends of the side wall 10. The vertical edge protrusions 17 are continuous with the horizontal edge protrusions 13, and the distance between the vertical edge protrusions 17 is large. Is the same as the width of the fitting portion 14, and thus the fitting portion 14 of the adjacent insulator 3 is fitted into the fitted portion 20 between the vertical edge projections 17. A fitting projection piece 18 is projectingly provided on one side surface of the lower portion of the side wall 10, and the fitting projection piece 18 can be fitted on the other side surface of the lower portion of the side wall 10.
9 is provided.

The mounting member 7 is integrally formed of an insulating material and has a lower surface provided with a locking projection 22 for fitting into the locking hole 21 of the mounting plate 6 for positioning.
A screw insertion hole 24 for inserting a screw 23 for fixing to the mounting plate 6 is formed vertically through the mounting member 7. A conductive bar insertion hole 24 for inserting the conductive bar 2 is formed through the mounting member 7, and the connecting projection 1 is formed in the lower center of the conductive bar insertion hole 24.
A connecting hole 25 having a size into which 5 can be fitted is formed so as to penetrate therethrough. Here, the conductive bar insertion hole 24 has the same shape as the conductive bar insertion hole 9 of the insulator 3,
The shape of the connecting hole 25 is the connecting groove portion 16 of the insulator 3.
It has the same shape as. As shown in FIGS. 1, 2, and 4, the mounting member 7 is provided with a pair of protrusions 29, and a space between the pair of protrusions 29 serves as a mounting member side fitting portion 19.

The terminal block A of the present invention is formed by the conductive bar 2 having the above structure, the plurality of insulators 3, the plurality of terminal screws 5, and the mounting member 7. The terminal block A is assembled as follows. That is, the number of insulators 3 according to the number of required connecting portions is sequentially inserted into the conductive bar 2 by using the conductive bar insertion holes 9 and arranged in parallel. In this case, each through hole 1 of the conductive bar 2 and the recess 11 of each insulator 3
The screw holes 12 of the nuts 4 fitted in the same are vertically communicated with each other, and in this state, the terminal screws 5 having seats 5a for sandwiching the conductor with the conductive bar 2 are respectively inserted from the through holes 1. The screw 4 is screwed into the screw hole 12 of the nut 4.
By doing so, the conductive bar 2 has a plurality of insulators 3.
Will be fixed by the terminal screw 5. in this case,
The insulators 3 arranged side by side are connected such that the connecting projections 15 of the insulators 3 are fitted into the connecting groove portions 16 of the adjacent insulators 3, and the fitting portions 14 are covered by the adjacent insulators 3. Fitting part 20
The end portions of the fitting protrusions 18 are fitted into the fitting portions 19 of the adjacent insulators 3 to be connected, and as a result, the insulators 3 arranged side by side are fitted.
The two will be accurately positioned and will maintain the correct connection with each other. When mounting the plurality of insulators 3, the insulator 3 located at one end of the conductive bar 2 at the end on the screw hole 26 side is mounted so that the side wall 10 is located on the screw hole 26 side.

In this way, a number of insulators 3 corresponding to the required number of connecting portions are attached to the conductive bar 2, and the input side terminal screw 27 is washered in the screw hole 26 at one end of the conductive bar 2. It is screwed via 28, and the end of the conductive bar 2 on the side where the screw hole 26 is provided is inserted into the one mounting member 7.
Further, the other end of the conductive bar 2 is inserted into the other attachment member 7, and in this case, at the same time, the connection hole 25 of the attachment member 7 is inserted.
The connecting projection 15 of the insulator 3 located at the end is fitted and connected, and the fitting portion 14 of the insulator 3 located at the end is fitted to the fitting-side fitting portion 19. .

In this way, the terminal block A having the required number of connections is formed. The conductive bar 2 may be one having a length corresponding to the number of connections required in advance, or
Alternatively, it may be cut to a length according to the number of connections required on site. In the terminal block A having the above-described configuration, the locking projections 22 of the mounting material 7 are fitted into the locking holes 21 formed in the mounting plate 6 as shown in FIG. 1, and the positioning is performed. The terminal block A can be attached to the mounting plate 6 by inserting and screwing into a screw hole (not shown) provided in the mounting plate 6.

Here, in the present invention, when the terminal block A is attached to the attachment plate 6, the lower end of the insulator 3 (in the embodiment, the lower end of the side wall 10 and the lower end of the fitting projection piece 18) is attached to the attachment plate 6. The lower end of the insulator 3 prevents the conductive bar 2 from bending downward when pressing the terminal screw 5 and tightening it when connecting the electric wire to the terminal screw 5. Can be prevented by contacting the mounting plate 6.

Although the terminal block A of the present invention can be used for various electric equipment, FIGS. 5 to 7 show examples of the distribution board B using the terminal block A of the present invention. Reference numeral 30 in the figure is a lower box having a thin box shape with an open front. Inside the lower case 30, a main switch 31, a main bar 32, a branch switch 33, a neutral wire terminal block 34, the terminal block A according to the present invention, etc. are installed. When the main box switch 31, the main bar 32, the branch switch 33, the terminal block A, the neutral wire terminal block 34, etc. are installed inside the lower box 30, as shown in FIGS. With the main switch 31, the main bar 32, the branch switch 33, the terminal block A, the terminal block 34 for neutral wires, etc. mounted on the front surface, the mounting plate 6 is put in the lower box 30 and is lowered by the screw 53. The mounting plate 6 is fixed to the box 30. Here, the main switch 31, the main bar 32, the branch switch 33, the terminal block A, the neutral wire terminal block 34, etc. are mounted on the mounting plate 6 in the arrangement relationship shown in FIG.

That is, a plurality of branch switches 33 are vertically installed side by side on the left and right of the front surface of the mounting plate 6. Power-supply-side terminals 35 are provided on the surface sides of the branch switches 33 that are arranged on the left and right with a gap therebetween, facing each other, and load-side terminals 36 are provided on the surfaces on the opposite side of each branch switch 33. The main bar 32 is arranged in the gap between the branch switches 33 arranged on the left and right. Branch bar 37 on the main bar 32
Is provided, and both ends of the branch bar 37 are connected to the power supply side terminals 35 of the branch switches 33 facing each other on the left and right.

The master switch 31 is arranged and attached above one side of the branch switches 33 arranged on the left and right. Further, a neutral wire terminal block 34 is attached by screws or the like above the other side of the branch switches 33 arranged on the left and right. Here, the main switch 31 and the neutral conductor terminal block 34 face each other with a gap 38 therebetween. The power supply side terminal 39 connected to the power supply voltage line of the master switch 31 is located on the side of the master switch 31 facing the neutral wire terminal block 34, and the load side terminal 4 of the master switch 31 is located.
0 is located on the opposite side of the neutral wire terminal block 34. In addition, the input side terminal 41 for connecting to the power source neutral line of the neutral line terminal block 34 is located on the side of the neutral line terminal block 34 facing the above-mentioned main switch 31. The load side terminal 42 of the sex wire terminal block 34 is located on the opposite side of the main switch 31. The load-side terminals 40 of the two main trunk switches 31 arranged in parallel vertically are electrically connected to the upper end portions of the upper and lower trunk bars 32 by connecting master bars 43, respectively.

A terminal block A according to the present invention is attached to the lower portion of the front surface of the attachment plate 6. The crimp terminal 45 at the other end of the connecting electric wire 44 in which the crimp terminal 45 at one end is connected to the load side terminal 42 of the neutral terminal block 34 is the terminal block A.
It is connected to the conductive bar 2 by an input side terminal screw 27 at one end. Mounting bases 46 project forward from the four corners of the front surface of the mounting plate 6, and an inner lid 47 is mounted on the mounting bases 46 with a screw tool. An opening 54 is provided in the inner lid 47, and the handles 48 of the left and right branch switches 33 and the master switch 31 are projected from the opening 54.

A lid frame 49 is attached to the front opening of the lower case 30, and one end of a front door 50 for closing the front opening of the lower case 30 is pivotally supported by a hinge 51 so as to be openable and closable. There is. The magnet 52 is provided on either the side of the front door 50 opposite to the hinge 51 or the lid frame 49 facing the hinge 51.
The end portion on the opposite side to the lid frame 49 is magnetically attachable. Figure 6
Reference numeral 55 indicates a handle.

A hole (not shown) is provided in the center of the upper portion of the lower box 30.
Is provided, and an end of a conduit tube (not shown) is inserted into this hole and attached by a nut (not shown). Two power supply voltage wires and one power supply neutral wire are inserted through the conduit, and the ends of these two power supply voltage wires and the one power supply neutral wire are connected to the conduit. From the upper part of the lower box 30,
Gap 38 between the main switch 31 and the neutral wire terminal block 34
Two power supply voltage lines are connected to each power supply side terminal 39 of each of the two main switchgears 31, using the portion as a wiring space.
Further, one power source neutral line is connected to the input side terminal 41 of the neutral line terminal block 34.

Although not shown, the lower box 30 is provided with a knock-out notch, and the knock-out notch is knocked out at the site to form a hole, and a load side terminal of each branch switch 33 is formed. The electric wire connected to 36 and the electric wire connected to each terminal screw 5 of the terminal block A are led out to the outside. It should be noted that the hole for leading out the wiring may be formed in advance in the factory without providing the knockout notch.

In the above embodiments, the terminal block A of the present invention is used for the distribution board B, but the present invention is not limited to this and can be used in various other electric devices.

[0022]

As described above, according to the present invention, a conductive bar having through holes formed at predetermined intervals, and a plurality of insulators having the conductive bar inserted therethrough and arranged in parallel are provided. Since the terminal block is composed of the nuts provided in each insulator, the terminal screws screwed into the nuts, and the mounting material for inserting the conductive bar into the mounting plate so that the conductive bar floats and is mounted, By inserting a desired number of insulators into the conductive bar through the conductive bar insertion holes and arranging them side by side, it is possible to easily form a terminal block having a desired number of connection parts. It is composed of a board part arranged side by side on the bottom surface of the bar and a side wall having a conductive bar insertion hole provided on the side of the board part.A nut is fitted into a recess formed in the top surface part of the board part, and the nut and the conductive material Terminal inserted through the through hole of the flexible bar that communicates vertically with the through hole. Since the screws are screwed into the screw holes of the nut, by screwing the terminal screws into the nut, it is possible to easily attach the respective insulators to the conductive bar at predetermined positions. Since the insulators can be installed side by side by attaching the wires to the conductive bar at a predetermined position, a separate member for joining the insulators is not required, and a common insulator, terminal screw, and nut are used. As a result, the types of parts and the number of parts can be reduced. In addition, the side wall provided on each insulator prevents the electric wire from escaping when connecting the electric wire to the terminal screw.Furthermore, since the nut is fitted in the recess, it prevents the nut from idling when tightening the terminal screw. It can be prevented and the connection work can be done easily. Also, since the lower end of the insulator has a length that makes contact with the mounting plate, the insulator contacts the mounting plate when the terminal block is mounted on the mounting plate, and as a result, the conductive bar is not tightened when the terminal screw is tightened. It is possible to prevent bending.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of a terminal block of the present invention.

FIG. 2 is a plan view of the above.

FIG. 3 is a partially exploded perspective view of the above.

FIG. 4 is a partially exploded perspective view seen from another direction of the above.

FIG. 5 is an overall perspective view of a distribution board using the terminal block of the present invention.

FIG. 6 is an exploded perspective view of the above distribution board.

FIG. 7 is a plan view showing a state where an attachment body is attached to the lower box of the same.

[Explanation of symbols]

 1 Through Hole 2 Conductive Bar 3 Insulator 4 Nut 5 Terminal Screw 6 Mounting Plate 7 Mounting Material 8 Board Part 9 Conductive Bar Insertion Hole 10 Side Wall 11 Recess 12 Screw Hole

Claims (1)

[Claims] 1. A conductive bar having through holes formed at predetermined intervals, an insulator in which a plurality of conductive bars are inserted and arranged in parallel, a nut provided in each insulator, and a screw attached to the nut. It is composed of a matching terminal screw and a mounting material for mounting the conductive bar by floating it on the mounting plate by inserting the conductive bar. A side wall provided with a conductive bar insertion hole provided on the side, a nut is fitted into a recess formed in the upper surface of the substrate, and the nut and the through hole of the conductive bar are vertically communicated with each other. A terminal block, wherein a terminal screw inserted from a through hole is screwed into a screw hole of a nut, and a length of a lower end of an insulator abuts a mounting plate.