JPH0421260Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention is designed to branch the so-called operating line to the operating power supply in order to supply power to equipment such as alarms and protective relays in a power control panel, for example. This invention relates to an improvement of a multistage terminal block for connection.

(Prior Art) Conventionally, as this type of multi-stage terminal block, a pyramid-shaped one in which terminal seats are provided in a stepped manner on both left and right sides is known. This multistage terminal block is used by connecting input line terminals and output line terminals to the left and right terminal seats of each stage so as to face each other.

(Problem to be solved by the invention) In the conventional multi-stage terminal block described above, when the input/output wires are connected to each terminal seat, the input/output wires connected to the upper terminal seat pass above the lower terminal seat. It has a structure that extends laterally. Therefore, when connecting the input/output line terminals to this terminal block, it is necessary to perform the connection work in order from the lower terminal base to the upper terminal base, and then After connecting the input/output line terminals to the seats, there is an inconvenience that the wires get in the way and it is not possible to retighten the lower terminals.

Therefore, the present invention provides a compact multi-stage terminal block that is not restricted by the procedure of connection work and that can retighten the terminals on the lower stage after connecting the input/output line terminals on the upper terminal block. The challenge is to provide this.

(Means for solving the problem) In the present invention, in order to solve the above problem,
A plurality of pairs of terminal seats 4, 4, for screwing the terminals of the input line 20 and the terminals of the output line 21 facing each other.
5, 5, 6, 6, 7, 7 are provided on the insulating member 1 at intervals vertically, and each pair of terminal seats 4, 4,
5, 5, 6, 6, 7, 7 between conductor plates 11, 12,
In the multi-stage terminal block formed by short-circuiting terminals 13 and 14, the insulating member 1 is made of synthetic resin, and a pair of parallel insulating plates 2 and 3 whose lower parts can be screwed to a support member such as a switchboard are provided, and the terminal Seats 4, 5, 6,
7 extends integrally from at least one of the insulating plates 2 and 3, and is installed between the insulating plates 2 and 3 so as to face each other, and connects the upper and lower input/output lines 20 and 2 in pairs, respectively.
The space between each pair of terminal seats 4, 4, 5, 5, 6 is arranged such that the distance between each pair of terminal seats becomes narrower from the upper one to the lower one. , 6, 7, 7, the upper ones 11, 12, 13 are connected to terminals from above to any of the lower terminal seats 12, 13, 14. Openings 11a, 12a, and 13a for driver insertion are provided to allow a driver D for connection work to be brought close.

(Function) In the terminal block of the present invention, each pair of terminal seats 4, 4, 5, 5, 6, 6, 7, 7 has an input line 20
The terminal of the output line 21 and the terminal of the output line 21 are screwed so as to face each other. When screwing terminals, if the terminals of the input/output lines 20, 21 are connected to the upper terminal seats 4, 5, 6 first, then the terminals of the input/output lines 20, 21 are connected to the lower terminal seats 5, 6.
When connecting the terminals of the input/output lines 20, 21 of 6, 7, the openings 11 of the upper conductor plates 11, 12, 13
A, 12a, and 13a are inserted into the driver D to approach the lower terminal seats 5, 6, and 7, and the screws can be tightened without difficulty. Further, even when it is necessary to retighten the terminals connected to the lower terminal seats 5, 6, 7, the same operation can be performed by inserting the driver D through the openings 11a, 12a, 13a.

(Example) An example of the present invention will be described with reference to the drawings. 1st
The figure is an exploded perspective view of a multi-stage terminal block, and Figure 2 is a cross-sectional view.
FIG. 3 is a wiring diagram of an example of use.

In the figure, an insulating member 1 made of synthetic resin is joined by a pair of half parts 1a and 1b of the same shape butted against each other. The insulating member 1 is screwed onto a parallel pair of insulating plates 2, 3, a plurality of pairs of terminal seats 4, 5, 6, 7 installed between the insulating plates 2, 3, and a mounting plate of the panel. It is equipped with a pedestal 8 for use.

Each pair of terminal seats 4, 4, 5, 5, 6, 6, 7,
7 are provided at the same height position facing each other between the insulating plates 2 and 3, and the upper and lower terminal seats 4, 5, 6, 7
There is a sufficient gap between them to allow input/output lines 20 and 21 to be inserted, and the distance between each pair becomes narrower from the higher level to the lower level. Each terminal seat 4, 5, 6,
7 extends integrally from the insulating plates 2 and 3, is installed between the insulating plates 2 and 3, and has holes 4a, 5a, 6a, and 7a for holding the nut 9 in the center.

Each pair of terminal seats 4, 4, 5, 5, 6, 6, 7,
7, there is a conductive plate 11 for short-circuiting between the two,
12, 13, and 14 are installed. Among these conductor plates 11, 12, 13, 14, the upper one 1
1, 12, and 13 are provided with driver insertion openings 11a, 12a, and 13a that allow a driver D for terminal connection work to approach any of the lower terminal seats 5, 6, and 7 from above. There is.

FIG. 3 shows an example of how the multistage terminal block A of this embodiment is used. Here, in the power control panel, a multi-stage terminal block A is used to branch-connect a so-called operation panel for supplying power to devices such as an alarm AL and an auxiliary contact Aux to an operation power source.

In the terminal block of this embodiment, an input line 2 is connected to each pair of terminal seats 4, 4, 5, 5, 6, 6, 7, 7.
0 terminal and the output line 21 terminal are facing each other and screwed together. When screwing terminals, if the terminals of the input/output lines 20, 21 are connected to the upper terminal seats 4, 5, 6 first, then the terminals of the input/output lines 20, 21 are connected to the lower terminal seats 5, 6.
When connecting the terminals of the input/output lines 20, 21 of 6, 7, the openings 11 of the upper conductor plates 11, 12, 13
A, 12a, and 13a are inserted into the driver D to approach the lower terminal seats 5, 6, and 7, and the screws can be tightened without difficulty. Further, even when it is necessary to retighten the terminals connected to the lower terminal seats 5, 6, 7, the same operation can be performed by inserting the driver D through the openings 11a, 12a, 13a.

(Effect of the invention) As described above, in the present invention, the input line 20
a plurality of pairs of terminal seats 4, 4, 5, 5, for screwing the terminals of the output line 21 and the terminals of the output line 21 facing each other;
6, 6, 7, 7 are provided vertically at intervals on the insulating member 1, and each pair of terminal seats 4, 4, 5, 5,
Conductor plates 11, 12, 13, 1 between 6, 6, 7, 7
4, the insulating member 1 is made of synthetic resin, and a pair of parallel insulating plates 2 and 3 whose lower portions can be screwed to a support member such as a switchboard are provided, and the terminal base 4 is short-circuited. , 5, 6, and 7 extend integrally from at least one of the insulating plates 2 and 3, and are installed between the insulating plates 2 and 3 to face each other, and connect the input/output lines 20 to the upper and lower sides in pairs. .
Among the conductor plates 11, 12, 13, 14 installed on 4, 5, 5, 6, 6, 7, 7, the upper one 11,
12 and 13, any lower terminal seat 1
Since driver insertion openings 11a, 12a, and 13a are provided so that the driver D for terminal connection work can be approached from above to 2, 13, and 14,
When connecting the terminals of the input/output lines 20, 21 to the terminal block, there is no need to be particular about the work procedure, and the work is easy. This has the advantage that the lower terminals can be further tightened after this.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; Fig. 1 is an exploded perspective view of a multi-stage terminal block, Fig. 2 is a perspective view of a conductor plate, Fig. 3 is a cross-sectional view, and Fig. 4 shows wiring in an example of use. It is a diagram. 1... Insulating member, 2, 3... Insulating plate, 4... Terminal seat, 5... Terminal seat, 6... Terminal seat, 7... Terminal seat, 8... Pedestal, 11... Conductor plate, 11a ...Opening, 12...Conductor plate, 12a...Opening, 13...
Conductor plate, 13a... Opening, 14... Conductor plate, 20
...Input line, 21...Output line.

Claims (1)

[Scope of Claim for Utility Model Registration] A plurality of pairs of terminal seats are provided on an insulating member at intervals vertically for screwing input line terminals and output line terminals facing each other, and each of these pairs is In a multi-stage terminal block in which the terminal seats are short-circuited by a conductor plate, the insulating member is made of synthetic resin and has a pair of parallel insulating plates whose lower portions can be screwed to a support member such as a switchboard; The terminal base extends integrally from at least one of the insulating plates, is installed between the insulating plates so as to face each other, and is spaced apart so that the input/output wires can be inserted into the top and bottom of each pair. The conductor plates are arranged so that they become narrower from the top to the bottom, and the upper one of the conductor plates installed between each pair of terminal seats is connected to any of the lower terminal seats. A multi-stage terminal block characterized by having a driver insertion opening that allows a driver for terminal connection work to be approached from above.