JP3044135B2 - Terminal block - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art A conventional terminal block has been constructed by mounting a single terminal board having a plurality of terminal screws on a single base. Further, as another conventional example, an attempt has been made to divide the cabinet to obtain a desired number of connections.

[0003]

However, in the case where a single base plate is provided with a single terminal plate having a plurality of terminal screws as in the former conventional example, the number of connection portions is fixed. Therefore, if a larger number of connection parts is desired, the number of connection parts is insufficient.On the contrary, if a smaller number of connection parts is desired, the connection parts are excessive and the space occupied by the terminal block is small. There was a problem that it increased unnecessarily.

[0004] Further, as in the case of the latter conventional example described above, when the base is divided into a desired number of connections, members for connecting the divided bodies are required, and the number of parts is reduced. There was a problem of increasing. The present invention has been made in view of the above-mentioned problems of the conventional example, and has as its object to achieve a desired number of connections with a simple configuration and to reduce the number of parts and types. To provide a possible terminal block.

[0005]

In order to solve the above-mentioned problems of the prior art and achieve the object of the present invention, the terminal block of the present invention has through holes 1 formed at predetermined intervals along the longitudinal direction. Conductive bar 2 and the conductive bar 2 from the longitudinal end face.
A plurality of insulators 3 which are inserted and juxtaposed, nuts 4 provided on the respective insulators 3, and terminal screws 5 screwed to the nuts 4;
And a mounting member 7 through which the conductive bar 2 is inserted to float and mount the conductive bar 2 on a mounting plate 6. The insulator 3 is provided with a substrate portion 8 arranged side by side on the lower surface of the conductive bar 2.
And a side wall 10 having a conductive bar insertion hole 9 provided on one side of the substrate portion 8. The nut 4 is fitted into a recess 11 formed on the upper surface portion of the substrate portion 8, and The through hole 1 of the elastic bar 2 communicates up and down, 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 contacts the mounting plate 6. It is characterized by having been done.

[0006]

According to the present invention having the above-described structure, the conductive bar 2 is moved from the end face in the longitudinal direction of the conductive bar 2.
Insert the desired number of insulators 3 according to the length into the conductive bar insertion holes 9
By inserting the desired number of insulators 3 through the conductive bar
2 can be arranged side by side along the longitudinal direction, and can easily be a terminal block having a desired number of connection portions. In this case, the insulator 3 is composed of a substrate part 8 juxtaposed on the lower surface of the conductive bar 2 and a side wall 10 having a conductive bar insertion hole 9 provided on one side of the substrate part 8. The nut 4 is fitted into a recess 11 formed in the upper surface of the nut, and the nut 4 and the through hole 1 of the conductive bar 2 communicate vertically, and the terminal screw 5 inserted from the through hole 1 is used as a screw hole of the nut 4. 1
2, the terminal screws 5 are screwed into the nuts 4, whereby the respective insulators 3 are attached to predetermined positions of the conductive bar 2, and the side walls 10 are connected to the terminal screws 5. This prevents the escape of the electric wire when the electric wire is connected to the cable. Further, since the nut 4 is fitted into the recess 11, the nut 4 can be prevented from idling when the terminal screw 5 is tightened. Further, since the lower end of the insulator 3 has a length in contact with the mounting plate 6, the conductive bar 2 can be prevented from bending when the terminal screw 5 is tightened.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS The invention will be described in more detail hereinafter with reference to an embodiment shown in the accompanying drawings. The conductive bar 2 is formed of 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 the screw holes 26 at a constant pitch along the longitudinal direction of the conductive bar 2. An input 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 is formed by projecting a side wall 10 at one end of the substrate portion 8. It is continuous to form a letter. As shown in FIGS. 3 and 4, the substrate portion 8 is formed with lateral edge projections 13 at the front and rear, and the upper end of the lateral edge projection 13 projects slightly upward from the upper surface of the substrate portion 8. ing. The end of the substrate 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, which is further outward from the upper portion of the center of the fitting portion 14. The connection protrusion 15 protrudes toward the side. A recess 11 is provided at the center of the upper surface of the substrate portion 8, and the nut 4 having a square shape in a plan view is fitted into the recess 11. Here, the nut 28 is fitted into the recess 11 so as not to be shifted sideways.
Further, the upper surface of the nut 4 is flush with the upper surface of the substrate portion 8. The connection groove 1 into which the connection protrusion 15 is fitted on the side of the upper side of the recess 11 on the side wall 10 side.
6 is formed so as to communicate with the side of the recess 11, and the connection groove 16 is formed to penetrate the side wall 10. Side wall 1
0, a conductive bar insertion hole 9 is formed penetrating on both sides, and the lower end of the conductive bar insertion hole 9 is flush with the upper surface of the substrate portion 8 and communicates with the connection groove 16. I have. Vertical edge protrusions 17 thicker than the side wall 10 are formed at front and rear ends of the side wall 10, and the vertical edge protrusion 17 is continuous with the horizontal edge protrusion 13, and the distance between the vertical edge protrusions 17 is provided. Is the same as the width of the fitting portion 14. Therefore, the space between the vertical edge projections 17 is a fitted portion 20 into which the fitting portion 14 of the adjacent insulator 3 fits. A fitting projection 18 projects from one side surface of the lower portion of the side wall 10, and the fitting portion 1 into which the fitting projection 18 can fit into the other side surface of the lower portion of the side wall 10.
9 are provided.

The mounting member 7 is integrally formed of an insulating material, and has a locking projection 22 on the lower surface 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 in the mounting member 7 so as to penetrate vertically. A conductive bar insertion hole 24 through which the conductive bar 2 is inserted is formed through the mounting member 7, and a connection projection 1 is formed in the lower center of the conductive bar insertion hole 24.
5 is formed to penetrate a connection hole 25 large enough to fit therein. Here, the shape of 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 connection hole 25 is the same as that of the connection groove 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 projections 29, and the space between the pair of projections 29 is the mounting-material-side fitting portion 19.

The terminal block A of the present invention is formed by the conductive bar 2, the plurality of insulators 3, the plurality of terminal screws 5, and the mounting member 7 having the above configuration. Assembling of the terminal block A is performed as follows. That is, a number of insulators 3 corresponding to the number of required connection parts are sequentially inserted into the conductive bars 2 by using the conductive bar insertion holes 9 and are arranged side by side. 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 upper and lower sides of the nuts 4 are vertically communicated with each other so as to be aligned with each other. The nut 4 is screwed into the screw hole 12 of the nut 4.
By doing so, the plurality of insulators 3 can be provided on the conductive bar 2.
Are fixed by the terminal screws 5. in this case,
The juxtaposed insulators 3 are connected such that the connecting projections 15 of the insulator 3 fit into the connecting grooves 16 of the adjacent insulator 3 and the fitting portions 14 are covered by the adjacent insulator 3. Fitting part 20
And the tip of the fitting projection 18 fits into the fitting portion 19 of the adjacent insulator 3 and is connected thereto. As a result, the insulators 3 arranged side by side
They will be accurately positioned and will maintain a precise connection with each other. In mounting the plurality of insulators 3, the insulator 3 located at one end of the conductive bar 2 on the screw hole 26 side is mounted so that the side wall 10 is located on the screw hole 26 side.

In this manner, the number of insulators 3 corresponding to the required number of connection portions is mounted on the conductive bar 2, and the input terminal screw 27 is screwed into the screw hole 26 at one end of the conductive bar 2. 28, and the end of the conductive bar 2 on the side provided with the screw hole 26 is inserted into one of the mounting members 7.
Further, the other end of the conductive bar 2 is inserted into the other mounting member 7, and in this case, the connection hole 25 of the mounting member 7 is simultaneously formed.
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 mounting material side fitting portion 19. .

In this manner, the terminal block A having the required number of connections is formed. The conductive bar 2 may be formed to have a length corresponding to the required number of connections in advance.
Alternatively, it may be cut to a length corresponding to the number of connections required on site. As shown in FIG. 1, the terminal block A having the above configuration is positioned by fitting the locking projections 22 of the mounting member 7 into the locking holes 21 formed in the mounting plate 6 as shown in FIG. Is inserted and screwed into a screw hole (not shown) provided in the mounting plate 6, whereby the terminal block A can be mounted on the mounting plate 6.

In the present invention, when the terminal block A is mounted on the mounting plate 6, the lower end of the insulator 3 (the lower end of the side wall 10 and the lower end of the fitting projection 18 in the embodiment) is attached to the mounting plate 6. The lower end of the insulator 3 prevents the conductive bar 2 from bending downward when pressing the terminal screw 5 while tightening the terminal screw 5 when connecting the electric wire to the terminal screw 5. Is in contact with the mounting plate 6.

Although the terminal block A of the present invention can be used for various electric facilities, FIGS. 5 to 7 show examples of a distribution board B using the terminal block A of the present invention. In the drawing, reference numeral 30 denotes a thin box-shaped lower box having an open front. Inside the lower case 30, a main switch 31, a main bar 32, a branch switch 33, a neutral terminal block 34, a terminal block A according to the present invention, and the like are provided. When the main switch 31, the main bar 32, the branch switch 33, the terminal block A, the neutral terminal block 34, and the like are provided 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 neutral terminal block 34, etc. mounted on the front surface, the mounting plate 6 is put into the lower box 30, and 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 terminal block 34, and the like are mounted on the mounting plate 6 in an arrangement relationship as shown in FIG.

That is, a plurality of branching switches 33 are vertically arranged on the left and right sides of the front surface of the mounting plate 6 and mounted. A power supply terminal 35 is provided on a surface of the branch switches 33 arranged on the left and right sides with a gap therebetween, facing each other, and a load terminal 36 is provided on a surface on the opposite side of each branch switch 33. A main bar 32 is arranged in a gap between the branch switches 33 arranged on the left and right. The main bar 32 has a branch bar 37.
Are provided, and both ends of the branch bar 37 are connected to the power supply side terminals 35 of the branch switch 33 facing left and right, respectively.

A main switch 31 is disposed and mounted above one of the branch switches 33 arranged on the left and right. Above the other side of the branch switches 33 arranged on the left and right, a neutral terminal block 34 is attached with screws or the like. Here, the main switch 31 and the neutral terminal block 34 are opposed to each other with a gap 38 therebetween. The power supply side terminal 39 connected to the power supply voltage line of the main switch 31 is located on the side of the main switch 31 opposite to the neutral terminal block 34, and the load side terminal 4 of the main switch 31
Numeral 0 is located on the opposite side of the neutral terminal block 34. Further, an input terminal 41 for connecting to a power supply neutral line of the neutral terminal block 34 is located on a side of the neutral terminal block 34 facing the main switch 31. The load-side terminal 42 of the sex terminal block 34 is located on the side opposite to the main switch 31. The respective load-side terminals 40 of the two main switches 31 arranged vertically are electrically connected to the upper ends of the upper and lower main bars 32 by connecting main bars 43.

Further, a terminal block A according to the present invention is mounted on the lower front surface of the mounting plate 6. Then, the crimp terminal 45 at the other end of the connection wire 44 connecting the crimp terminal 45 at one end to the load-side terminal 42 of the terminal block 34 for neutral wire is connected to the terminal block A.
Is connected to the conductive bar 2 by an input terminal screw 27 at one end. A mounting base 46 protrudes from four corners of the front surface of the mounting plate 6 toward the front, and an inner lid 47 is mounted to the mounting base 46 with screws. An opening 54 is provided in the inner lid 47, and the handles 48 of the left and right branch switches 33 and the main switch 31 project from the opening 54.

A lid frame 49 is attached to the front opening of the lower box 30. One end of a front door 50 for closing the front opening of the lower box 30 is pivotally supported by a hinge 51 so as to be freely opened and closed. It is. A magnet 52 is provided on one of the side of the front door 50 opposite the hinge 51 or the lid frame 49 facing the hinge 51 so that the hinge 51
The end on the opposite side is magnetically attached to the lid frame 49. FIG.
Reference numeral 55 indicates a handle.

A hole (not shown) is formed in the upper central portion of the lower box 30.
The end of a conduit tube (not shown) is inserted into this hole, and attached by a nut (not shown). Two power supply voltage lines and one power supply neutral line pass through the conduit, and the ends of these two power supply voltage lines and one power supply neutral line are connected to the conduit. Is introduced into the upper part of the lower box 30,
Gap 38 between main switch 31 and neutral terminal block 34
The two power supply voltage lines are connected to the respective power supply terminals 39 of the two main switches 31 with the portions as wiring spaces,
One power supply neutral wire is connected to the input terminal 41 of the neutral wire terminal block 34.

For example, although not shown, the lower case 30 is provided with a knockout cutout portion. The knockout cutout portion is knocked out on 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. Note that a hole for leading out the wiring may be formed in a factory in advance without providing the cutout portion for knockout.

In the above-described embodiment, an example in which the terminal block A of the present invention is used for the distribution board B is shown. However, the present invention is not limited to this, and it is needless to say that the terminal block A can be used for various other electric devices.

[0022]

In the present invention, as described above, the longitudinal
A conductive bar having through holes formed at predetermined intervals along the direction, a plurality of insulators which are inserted side by side from the longitudinal end face of the conductive bar , a plurality of insulators, a nut provided on each insulator, and a nut. screwed to the terminal screw, because it is inserted conductive bar terminal block and the mounting member for mounting floated conductive bar to the mounting plate are constructed, longitudinal direction of the conductive bar
From the end face, the desired number of insulators according to the length of the conductive bar
Through the conductive bar insertion hole, the desired number of
Insulators can be juxtaposed along the length of the conductive bar
A terminal block having a desired number of connecting portions can be easily formed, and the insulator is made of a substrate portion arranged in parallel with the lower surface of the conductive bar and a conductive bar provided on one side of the substrate portion. A nut is fitted into a recess formed in the upper surface of the board portion, and the nut and the through-hole of the conductive bar communicate vertically with the terminal screw inserted from the through-hole. Screwed into the screw hole of the nut, each insulator can be easily attached to the predetermined position of the conductive bar by screwing the terminal screw to the nut. since mounted on predetermined the position of the conductive bar can parallelly in the longitudinal direction of the conductive bar insulator bodies, without the need for a separate coupling dedicated member for coupling an insulator, also common insulator, Terminal screws and nuts can be used. Varieties Results Part of al, in which it is possible to reduce the number of parts. In addition, the side walls provided on each insulator prevent the wires from escaping when the wires are connected to the terminal screws.Furthermore, since the nuts are fitted into the recesses, the nuts can be turned idle when the terminal screws are tightened. It can be prevented and the connection work can be simplified. In addition, since the lower end of the insulator is long enough to abut the mounting plate, the insulator abuts the mounting plate when the terminal block is mounted on the mounting plate, and as a result, the conductive bar is tightened when the terminal screws are tightened. Deflection can be prevented.

[Brief description of the drawings]

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

FIG. 2 is a plan view of the same.

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

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

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 distribution board according to the first embodiment.

FIG. 7 is a plan view showing a state where the mounting body is mounted on the lower box of the above.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Through hole 2 Conductive bar 3 Insulator 4 Nut 5 Terminal screw 6 Mounting plate 7 Mounting material 8 Substrate 9 Conductive bar insertion hole 10 Side wall 11 Depression 12 Screw hole

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Showa 51-156490 (JP, U) Japanese Utility Model Showa 55-148179 (JP, U) (58) Fields surveyed (Int. Cl. ⁷ , DB name) H01R 9/24 H01R 4/38

Claims (1)

(57) [Claims] 1. A conductive bar having through holes formed at predetermined intervals along a longitudinal direction, and a conductive bar formed between the conductive bar and a longitudinal end face.
A plurality of insulators inserted in parallel from each other, a nut provided on each insulator, a terminal screw screwed to the nut, and a conductive bar inserted into the mounting plate to float and mount the conductive bar. The insulator is constituted by a substrate portion arranged in parallel with the lower surface of the conductive bar and a side wall having a conductive bar insertion hole provided on one side of the substrate portion, and the upper surface of the substrate portion The nut is fitted into the recess formed in the portion, the nut and the through hole of the conductive bar communicate vertically, and the terminal screw inserted from the through hole is screwed into the screw hole of the nut, and the lower end of the insulator is A terminal block having a length in contact with a mounting plate.