JPH055656Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a collective terminal block for connecting a large number of branch conductors connected to breakers, etc. to a main conductor connected to a power source in a switchboard.

(Prior art) In conventional switchboards, a conductor plate with bolt insertion holes for connecting a large number of terminals is installed on an insulating stand as a collective terminal block for connecting branch conductors to the main conductor. something is known. This consists of three input terminals and three branching conductors that are electrically connected to the input terminals fixed on an insulating stand, and terminals of a plurality of branching lines are connected to the branching conductors.

(Problems to be solved by the invention) In the above conventional collective terminal block for control panels,
Since the branching conductors extend planarly from the insulating base at insulating intervals, they occupy a large installation area, which is an obstacle to downsizing the panel. On the other hand, there is one in which the insulating stand is shaped like steps and three-dimensional conductor plates are installed above and below. (Utility Model Application No. 60-15768), since the conductor plate and the insulating stand are secured only by the connecting bolt, if the connecting bolt loosens, the conductor plate can easily come off and cause a contact failure. Also, since the branch conductor wires are connected from the front of the conductor plate, connecting from the upper conductor plate will hinder the connection work to the lower conductor plate. Furthermore, there is a problem in that adjacent branch conductors are easily short-circuited.

This invention solves the above-mentioned problems with conventional collective terminal blocks for switchboards, and connects as many branch lines as possible without requiring a large installation space and while ensuring sufficient insulation distance. It is an object of the present invention to provide a collective terminal block for a power distribution board that can be easily connected.

(Means for solving the problem) In this invention, in order to solve the above problem,
A main terminal block 1, a desired number of branch terminal blocks 2 arranged adjacent to the main terminal block 1, and branch terminal blocks 2.
A collective terminal block is constituted by a terminal support block 3 provided adjacent to the terminal support block 3 and a conductor plate 4 supported by these,
The main terminal block 1 is made of electrically insulating synthetic resin, and a mounting seat 5 is provided at the bottom for fixing it on the mounting plate P of the switchboard. 6, a plurality of horizontal through holes 6a are bored in the partition plate 6 at stepped positions in order to pass the conductor plates 4 of each phase, and further along the lower edge of each through hole 6a. The main terminal receiving parts 7 are made to protrude horizontally from the partition plate 6 in the right angle direction, and the main terminal receiving parts 7 are formed with insertion holes 7a for the terminal connection bolts 8, and the branch terminal block 2 is also electrically insulated. The insulating plate 9 is made of a plastic synthetic resin, extends parallel to the partition plate 6, and has a plurality of through holes 9a facing the through holes 6a of the partition plate 6 for passing the conductor plate 4 therethrough. Insulating plate 9 along the lower edge of each insertion hole 9a of insulating plate 9
A branch terminal receiving part 10 is made to protrude horizontally at right angles from the branch terminal receiving part 10, and an insertion hole 10a for the terminal connecting bolt 11 is formed in this branch terminal receiving part 10, and the tip thereof is brought into contact with the partition plate 6, The terminal support stand 3 is also made of electrically insulating synthetic resin, and has a mounting seat 12 at the bottom for fixing it on the mounting plate P of the switchboard. A termination plate 13 is provided to extend parallel to the plate 9, and a conductor plate receiving portion 14 is horizontally protruded from the termination plate 13 at a position corresponding to the branch terminal receiving portion 14 of the insulating plate 9. The portion 14 is provided with an insertion hole 14a for the conductor plate fixing bolt 15, and its tip is brought into contact with the insulating plate 9.The conductor plate 4 has a main terminal receiving portion 7, a branch terminal receiving portion 10, and Bolt insertion holes 4a, 4b, 4c are provided corresponding to each bolt insertion hole 7a, 10a, 14a of the conductor plate receiving portion 14,
Each through hole 6a of the main terminal block 1 and branch terminal block 2,
9a, and screw the terminal A1 of the main conductor A in the extending direction of the conductor plate 4 on the main terminal receiving part 7, and also screw the terminal A1 of the main conductor A in the direction perpendicular to the conductor plate 4 on the branch terminal receiving part 10. Terminal B1 of B is screwed.

(Function) In the terminal block of the present invention, the main terminal receiving part 7
The terminal A1 of the main conductor A is screwed on the top along the extension direction of the conductor plate 4, and the terminals B1 of the plurality of branch conductors B are screwed on the branch terminal receiving part 10 in the direction orthogonal to the conductor plate 4. . The branch conductive wire B connected to the lower conductive plate 4 is led out through a space between the lower conductive plate 4 and the upper conductive plate 4. When connecting the terminal B1 of the branch conductor B to the conductor plate 4, even if the branch line terminal B1 is connected to the upper conductor plate 4 first, the driver D approaches the lower conductor plate 4 from above. Therefore, there is no influence on the connection work of the branch line terminal B1 to the lower conductor plate 4. Therefore, the connection work of the branch line terminal B1 is not restricted by any procedure, and the connected terminal B1 can be retightened at any time.

(Embodiment) An embodiment of the present invention will be described with reference to FIGS. 1 to 3. The terminal blocks of this embodiment include a main terminal block 1 for supporting a terminal A1 of a main conductor A connected to a power supply, and a branch terminal block 2 for supporting a terminal B1 of a branch conductor B connected to a device such as a breaker.
and an end support stand 3 that supports the end of the conductor plate 4;
It is provided with a conductor plate 4 that passes through the main terminal block 1 and the branch terminal block 2 and is connected at its terminal end to the terminal terminal block 3.

The main terminal block 1 is made of electrically insulating synthetic resin, and includes a mounting seat 5 provided at the bottom for screwing onto the mounting board P of the switchboard, and this mounting seat 5.
The main terminal receiving part 7 is provided with a partition plate 6 that stands up at right angles from the partition plate 6 and a main terminal receiving part 7 that projects horizontally from the partition plate 6 in the direction at right angles.

The partition plate 6 includes a plurality of horizontal through-holes 6a bored at staggered positions in order to penetrate the conductor plates 4 of each phase. Main terminal receiving part 7
project horizontally from the partition plate 6 along the lower edge of each through hole 6a, and the terminal connection bolt 8
It has an insertion hole 7a.

A desired number of branch terminal blocks 2 are arranged adjacent to and adjacent to the side opposite to the main terminal receiving portion 7 of the main terminal block 1, and are also made of electrically insulating synthetic resin.
The branch terminal block 2 includes an insulating plate 9 extending parallel to the partition plate 6 and a branch terminal receiving portion 10 horizontally protruding from the insulating plate 9 at right angles.

The insulating plate 9 has a plurality of through holes 9a that face the through holes 6a of the partition plate 6 and allow the conductor plate 4 to pass therethrough. The branch terminal receiving portion 10 protrudes horizontally from the insulating plate 9 at right angles along the lower edge of each through hole 9a of the insulating plate 9, and has its tip abutted against the partition plate 6, and has a terminal connection in the center. It has an insertion hole 10a for the bolt 11.

The terminal support 3 is also made of electrically insulating synthetic resin, and includes a mounting seat 12 provided at the bottom for fixing on the mounting plate P of the switchboard, and a mounting seat 12 that stands up at right angles from this mounting seat 12 and is insulated. It includes an end plate 13 extending parallel to the plate 9, and a conductor plate receiving portion 14 projecting horizontally from the end plate 13 at right angles. The conductor plate receiving part 14 protrudes horizontally from the termination plate 13 at right angles at a position corresponding to the branch terminal receiving part 10 of the insulating plate 9, and has its tip abutted against the insulating plate 9, and has a conductor plate in the center. It has an insertion hole 14a for the fixing bolt 15.

The conductive plate 4 has bolt insertion holes 7 in the main terminal receiving part 7, the branch terminal receiving part 10, and the conductive plate receiving part 14.
Bolt insertion holes 4 corresponding to a, 10a, 14a
It is equipped with a, 4b, and 4c. And conductor plate 4
is each through hole 6 of main terminal block 1 and branch terminal block 2
conductor plate receiving part 1 at the terminal end by penetrating through a and 9a.
4, and is screwed onto the main terminal receiving portion 7, branch terminal receiving portion 10, and conductor plate receiving portion 14 using bolts 8, 11, and 6.

16 is an insulating cover that is placed over the terminal block.

In the terminal block of this embodiment, the terminal A1 of the main conductor A is screwed on the main terminal receiving part 7 along the extension direction of the conductor plate 4, and the terminal A1 of the main conductor A is fixed with screws on the branch terminal receiving part 10 perpendicular to the conductor plate 4. Terminals B1 of the plurality of branch conductors B are screwed in the direction.
The branch conductive wire B connected to the lower conductive plate 4 is led out through a space between the lower conductive plate 4 and the upper conductive plate 4. Branch conductor B
When connecting the terminal B1 to the conductor plate 4, even if the branch line terminal B1 is connected to the upper conductor plate 4 first, the driver D can approach the lower conductor plate 4 from above. Therefore, there is no influence on the connection work of the branch line terminal B1 to the lower conductor plate 4. Therefore, the connection work of the branch line terminal B1 is not restricted by any procedure, and once the terminal B1 has been connected, it can be retightened at any time.

(Effects of the invention) As described above, in the present invention, a main terminal block 1, a desired number of branch terminal blocks 2 arranged adjacent to the main terminal block 1, and a branch terminal block 2 arranged adjacent to the branch terminal block 2 are provided. The main terminal block 1 is made of electrically insulating synthetic resin, and the mounting plate P of the distribution board is installed at the bottom of the main terminal block 1. A mounting seat 5 for fixing is provided on the top, and a partition plate 6 is provided to stand up at right angles from this mounting seat 5.A partition plate 6 is provided with stepped positions in order to pass the conductor plate 4 of each phase through the partition plate 6. A plurality of horizontal through-holes 6a are bored by shifting the through-holes 6a, and the partition plate 6 is drilled along the lower edge of each through-hole 6a.
The main terminal receiving parts 7 are made to protrude horizontally in the right angle direction from the main terminal receiving part 7, and the insertion holes 7a for the terminal connection bolts 8 are formed in these main terminal receiving parts 7.
An insulating plate 9 is also made of an electrically insulating synthetic resin and has a plurality of through holes 9a extending parallel to the partition plate 6 and facing the through holes 6a of the partition plate 6 to allow the conductor plate 4 to pass through. A branch terminal receiving part 10 is made to protrude horizontally at right angles from the insulating plate 9 along the lower edge of each insertion hole 9a of this insulating plate 9, and a terminal connecting bolt 11 is inserted into this branch terminal receiving part 10. A hole 10a is formed and its tip is brought into contact with the partition plate 6, and the terminal support 3 is also made of electrically insulating synthetic resin, and the lower part is for fixing on the mounting plate P of the switchboard. mounting seat 1
2, and an end plate 13 rising up from the mounting seat 12 at right angles and extending parallel to the insulating plate 9.
The terminal plate 13 has a conductive plate receiving part 14 projecting horizontally at a position corresponding to the branch terminal receiving part 14 of the insulating plate 9.
is provided with an insertion hole 14a for the conductor plate fixing bolt 15, and its tip is brought into contact with the insulating plate 9.The conductor plate 4 has a main terminal receiving part 7, a branch terminal receiving part 10, and a conductor plate. Bolt insertion holes 4a, 4b, 4c corresponding to the bolt insertion holes 7a, 10a, 14a of the receiving part 14 are provided, and the through holes 6a, 9a of the main terminal block 1 and the branch terminal block 2 are penetrated to form the main terminal receiver. The terminal A1 of the main conductor A is screwed on the part 7 in the extending direction of the conductor plate 4, and the terminals B1 of the plurality of branch conductors B are screwed on the branch terminal receiving part 10 in the direction perpendicular to the conductor plate 4. This makes it possible to connect a large number of branch conductors in a compact manner, and in addition, branch conductor B
When connecting the terminal B1 to the conductor plate 4, even if the branch line terminal B1 is connected to the upper conductor plate 4 first, the driver D can be approached from above to the lower conductor plate 4. , does not affect the connection work of the branch line terminal B1 to the lower conductor plate 4 in any way.
Therefore, the connection work of the branch line terminal B1 is not restricted by the procedure, and once the terminal B1 is connected,
can be retightened at any time. Furthermore, since the conductor plate 4 passes through the through holes 6a and 7a of the main terminal block 1 and the branch terminal block 2, even if the terminal connection bolt 11 comes off, the main terminal block 1 and the branch terminal block The conductor plate does not come off from the stand 2 and does not cause failure due to contact with the surroundings.
Furthermore, the front and back adjacent branch conductors B and B are reliably insulated by the terminal receiving part 10 of the branch terminal block 2, and the left and right adjacent branch conductors B and B are reliably insulated by the insulating plate 9 of the branch terminal block 2. It has the effect of being able to

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is an exploded perspective view of a collective terminal block, FIG. 2 is a plan view of the collective terminal block, and FIG. 3 is a sectional view of FIG. 2. 1... Main terminal block, 2... Branch terminal block, 3...
End support stand, 4... Conductor plate, 5... Mounting seat, 6
...Dividing plate, 6a... Through hole, 7... Main terminal receiving part, 7a... Insertion hole, 8... Terminal connection bolt, 9... Insulating plate, 9a... Through hole, 10... Branch terminal Receiving part, 10a...Insertion hole, 11...Terminal connection bolt, 12...Mounting seat, 13...Terminal plate, 14...Branch terminal receiving part, 14a...Insertion hole, 15...For fixing conductor plate Bolt, A...main conductor, A1...terminal, B...branch conductor, B1...terminal.

Claims (1)

[Scope of claim for utility model registration] A collective terminal block for connecting branch conductors connected to various devices to the main conductor connected to the power supply side, made of electrically insulating synthetic resin, fixed on the mounting plate of a switchboard. It is equipped with a mounting seat provided at the bottom for the purpose of connecting the power supply, and a plurality of horizontal through-holes that rise perpendicularly from the mounting seat and are bored at staggered positions in order to pass through the conductor plates of each phase. A main terminal block comprising a partition plate, and a main terminal receiving part that projects horizontally from the partition plate in a perpendicular direction along the lower edge of each of the through holes and has an insertion hole for a terminal connection bolt; An insulating plate made of insulating synthetic resin, extending parallel to the partition plate, and having a plurality of through holes for passing conductor plates through, facing the through holes of the partition plate, and each insertion hole of this insulating plate. a branch terminal receiving part that protrudes horizontally at right angles from the insulating plate along the lower edge of the main terminal block, the tip of which is in contact with the partition plate, and has an insertion hole for a terminal connection bolt; A branch terminal block, which is arranged in a desired number in order so that terminals of branch conductors adjacent in the extension direction are separated by an insulating plate adjacent to the side opposite to the receiving part, and which is also made of electrically insulating synthetic resin and is connected to the switchboard. A mounting seat provided at the bottom for fixing on the mounting plate, a termination plate rising at right angles from the mounting seat and extending parallel to the insulating plate, and a position corresponding to the branch terminal receiving portion of the insulating plate. a conductor plate receiving part that protrudes horizontally at right angles from the termination plate, has a tip abutting the insulating plate, and has an insertion hole for a bolt for fixing the conductor plate, and is adjacent to the branch terminal block disposed at the termination. a terminal support block that is attached to the main terminal block, and bolt insertion holes that are inserted into the respective insertion holes of the main terminal block and the branch terminal block, and that correspond to the respective bolt insertion holes of the main terminal receiving part, the branch terminal receiving part, and the conductor plate receiving part. a plurality of conductor plates provided with holes, and a terminal of the main conductor wire is screwed onto the main terminal receiving part in a direction along the conductor plate;
1. A collective terminal block for a power distribution board, characterized in that terminals of a plurality of branch conductors are screwed onto the branch terminal receiving part from the rear in a direction orthogonal to the conductor plate.