KR20080072166A - Terminal block - Google Patents

Abstract

A terminal block is provided to reduce the number of parts, to reduce assembly processes, and to cut costs of the products by fitting units and cover blocks vertically, combining common lead wire pieces with the unit blocks, and preventing the unit and cover blocks from separating horizontally by catching grooves and protrusions. A terminal block(1) comprises unit blocks(100), common lead wire pieces, short bolts(400), and a pair of cover blocks(500,550). The unit blocks have pressing terminal pieces which are installed in first screw holes by fixing bolts. The common lead wire pieces have through holes. The short bolts forms a common circuit or turns off the common circuit. The cover blocks cover the outside of the unit blocks. Combining grooves(600) and combining projections(650) are formed on the surface where the cover blocks face the unit blocks. The combined unit and cover blocks are prevented from separating horizontally by catching grooves and protrusions which are formed on two sides of the combining grooves and the combining projections. Combining holes(590) are vertically formed on ends of the cover blocks to fix the terminal blocks to a fixed object by combining bolts. Mounting grooves(450) are formed on two vertical sides of the unit blocks to fix stripped name plates(3).

Description

Terminal Block

1 is an exploded perspective view of a conventional terminal block

Figure 2 is a front cross-sectional view of a conventional terminal block

Figure 3 is a side cross-sectional view of a conventional terminal block

4 is a top perspective view of a terminal block according to the present invention;

5 is an exploded perspective view of a terminal block according to the present invention;

6 is a bottom perspective view of a terminal block according to the present invention;

7 is a cross-sectional view taken along the line A-A of FIG.

8 is a cross-sectional view taken along the line B-B of FIG.

Figure 9 is a unit block side cross-sectional view of a terminal block according to the present invention

10 is a side cross-sectional view of a cover block of the terminal block according to the present invention.

<Explanation of symbols for the main parts of the drawings>

  1. Terminal Block 2. Support Rail

100. Unit Block 200. Terminal Terminal

250. Pressurized Terminal Piece 290. Fixing Bolt

300. Common conductive plate 320. Through hole

400. Fixed bolt 500,550. Cover block

600. Coupling groove 610. Hanging groove

650. Coupling protrusion 660. Hanging jaw

700. First groove 750. Second groove

800. Fixed bracket 900,950. Rail Coupling Groove

The present invention relates to a terminal block, and more particularly, to a terminal block used for electrically connecting or branching a power source or a signal line.

In general, a terminal block for electrically connecting or branching a power supply or a signal line is installed in a control panel of a switchgear, various mechanical devices, or a terminal box of a building. 1 to 3 illustrate a terminal block for a common terminal that connects and assembles a plurality of unit blocks of an example of a conventional terminal block, and which may configure or turn off a common circuit of the terminal terminal piece of the unit block.

Referring to this, the terminal block 1 is continuously disposed in the transverse direction, the terminal terminal piece 20 is horizontally installed in the longitudinal direction in the center and the pressing terminal piece 25 on the upper surface of both ends of the terminal terminal piece 20 A plurality of unit blocks 10 each having a fitting groove 15 and a fitting protrusion 17 interlocked with each other so as to be seated and fixed by the fixing bolt 29 to be disposed in a line with each other, and the terminal terminal piece 20 A common conductor plate 30 having a through hole 32 formed at a position facing the terminal terminal piece 20 in a transverse direction to the center of the upper side of the unit block 10 so as to be positioned directly on the upper side of the unit block 10; Short bolts 40 which are coupled to or separated from the terminal terminal pieces 20 of the respective unit blocks 10 through the through holes 32 of the common wire plate 30 to form or turn off a common circuit. And a pair of coverables covering both ends of the plurality of unit blocks 10. (50,55) and a pair of fixing brackets (60) arranged on both sides of the pair of cover blocks (50,55) to fix the terminal block to the fixed object, and the fixing bracket (60) Fixing bracket 60, cover block 50, 55, unit block 10, screw 80, nut 85, etc. to integrate cover block 50, 55 and unit block 10 together It consists of.

At this time, the fitting grooves 7 which are opened in opposite directions so as to be hooked on both sides of the bottom of the unit block 10 and the cover blocks 50 and 55 are fitted to the support rails 2 fixed to the switchboard or the terminal box. Each is formed. Therefore, the unit block 10 and the cover block 50, 55 through the fitting grooves 7 of the support rail 2 can be fitted in the longitudinal direction of the support rail 2 can be fixedly mounted.

Description number 3 is a name plate installed in the transverse direction detachably long on one side of the unit block 10, the number 4 is a safety cover that is detachably coupled to cover the upper portion of the unit block 10.

However, such a conventional terminal block forms a through hole (not supported) to unite the unit block 10, the cover blocks 50 and 55, and the fixing bracket 60, respectively, and the screw 80 and the nut 85. ), And the unit block 10 and the cover block (50, 55) and the fixing bracket (60) to be fastened one by one with the screw 80 and the nut (85), the number of parts and assembly is very cumbersome and inconvenient Of course, there is a problem in that the productivity is lowered and the cost of the product is increased, such as the assembly takes a lot of time.

In addition, when the terminal block is fixed to the support rails 2, the unit blocks 10 and the cover blocks 50 and 55 are sandwiched at the longitudinal ends of the support rails 2 in the longitudinal direction of the support rails 2. The slide must be transported, and in order to separate, the slide must be transported in the longitudinal direction of the support rail 2 so that the support rail 2 is very cumbersome and inconvenient.

In addition, the terminal block should be fitted at one end in the longitudinal direction of the support rail (2) when fixed to the support rail (2), and when fixing the terminal to the terminal terminal piece 20, the fixing bolt 29 to the terminal terminal Since the fixing bolts 29 are completely fixed to the terminal terminal piece 20 again after being completely removed from the piece 20 and separated, the work is very troublesome and inconvenient.

Therefore, the present invention has been proposed to solve the fundamental problems of the prior art as described above, the object of the present invention is to reduce the number of parts, easy assembly, as well as to reduce the assembly process to improve the productivity and cost of the product It provides a new configuration of terminal blocks that can be lowered and easily detached from the support rail.

In order to achieve the above object, the present invention has a plurality of unit blocks which are continuously disposed in the transverse direction and the terminal terminal piece is horizontally installed in the center in the longitudinal direction, the pressing terminal piece is seated and fixed to the upper surface of both ends of the terminal terminal piece; A common conductor plate horizontally fitted in a horizontal state at the center of the upper side of each unit block so as to intersect the upper portion of each terminal terminal piece, and penetrates the common conductor plate at regular intervals to each terminal terminal piece; In the terminal block consisting of a short bolt that is fastened or separated to form or turn off a common circuit, and a pair of cover blocks covering the outer side of the unit block located at both ends of the transverse direction of the plurality of unit blocks In the longitudinal direction so that the plurality of unit blocks and the pair of cover blocks facing each other are fitted to each other The coupling groove and the coupling protrusion are respectively formed, the upper and lower inner wall surface of the coupling groove and the upper and lower outer wall surface of the coupling protrusion is formed in the longitudinal direction to engage with each other in the longitudinal direction, the cover block One end of the coupling hole is formed to penetrate vertically, characterized in that the fastening bolt is fixed to the fixed object through the coupling hole.

At this time, a slot is formed at one side in the width direction of both ends of the terminal terminal piece in a long direction, and the pressing terminal piece is vertically bent at the upper end of the guide portion and the slide is elevated in the slot, and fixed to the terminal terminal piece A terminal part seated or spaced by a bolt, and a locking part that is bent at a right angle in the direction of the terminal part from the lower end of the guide part and is caught or spaced from the bottom of the terminal terminal piece, and a spring which supports the locking part upwardly under the locking part of the pressing terminal piece. Is provided, and both ends of the terminal terminal piece and the center of the terminal portion of the pressing terminal piece is formed with a first screw hole and a coupling hole so that the fixing bolt is screwed, respectively, the upper end of the screw portion of the fixing bolt is not formed of the screw inner diameter of the coupling hole It is characterized in that the more reduced shaft diameter portion is formed.

And a pair of rail coupling grooves concave inward in the longitudinal direction of the terminal block is formed on the front and rear sides of the unit block and the cover block of the terminal block, the outer inner wall surface of one rail coupling groove of the pair of rail coupling grooves A locking groove is formed in the longitudinal direction of the terminal block, and an outer wall surface of the other rail coupling groove is provided with a locking member which is recessed in the direction of the rail coupling groove, and the center of the bottom of the unit block is opened inwards to open to both sides in the longitudinal direction of the terminal block. A concave first groove is formed, and first catching jaws protruding inward in a direction facing each other are formed on both inner wall surfaces of the first groove, and a unit block side is formed at the center of the bottom surface of the cover block so as to communicate with the first groove. A second groove is formed to be opened, but second engaging jaws are formed on both inner wall surfaces of the second groove to protrude inward in a direction facing each other. One end of the first and second grooves is provided with a fixing hole through which a fixing hole is formed so that the fixing bracket is slidably mounted to the outside of the terminal block.

In this case, the fixing bracket is slidably coupled to the first and second grooves, and a plate-shaped sliding portion having a locking hole formed at a central portion thereof to be caught by the locking projection, and bent stepwise to be parallel to each other at an end of the sliding portion, and the fixing hole is formed. It is made of a horizontal fixed portion, the locking projections are formed to protrude downward in the center of the bottom surface of the first and second grooves of the unit block, respectively, the locking hole is formed in the center of the sliding portion of the fixing bracket so that the locking projection is caught, Both ends of the engaging projection is characterized in that the inclined portion is formed inclined toward the end.

<Example>

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. 4 is a top perspective view of the terminal block according to the present invention, FIG. 5 is an exploded perspective view of the terminal block according to the present invention, FIG. 6 is a bottom perspective view of the terminal block according to the present invention, and FIG. A section view. 8 is a cross-sectional view taken along line B-B of FIG. 4, FIG. 9 is a side cross-sectional view of a unit block of a terminal block according to the present invention, and FIG. 10 is a side cross-sectional view of a cover block of a terminal block according to the present invention.

As shown, the terminal block 1 according to the present invention is continuously arranged in the transverse direction and the terminal terminal piece 200 having first and second screw holes 202 and 205 formed at both ends and at the center thereof is horizontally installed in the longitudinal direction. And a plurality of unit blocks 100 which are fixed to the first screw hole 202 by fixing bolts 290 and are arranged in a row on the upper surface of both ends of the terminal terminal piece 200, A position penetrating in the transverse direction at the center of the upper side of each unit block 100 so as to intersect the upper portion of each terminal terminal piece 200 and faces the second threaded hole 205 of the terminal terminal piece 200. The common wire plate 300 is formed in the through hole 320 and through the through hole 320 of the common wire plate 300 through the terminal block 200 of each unit block 100, or is separated and common A short bolt 400 capable of constituting or turning off the circuit; Consisting of a pair of cover blocks (500, 550) covering the outer side of the unit block 100, which is located at both ends in the transverse direction of the unit block 100 is similar to the conventional.

At this time, the plurality of unit blocks 100 and the pair of cover blocks (500,550) arranged in series facing each other in the longitudinal direction of each other, but when coupled to each other coupling groove 600 to prevent separation in the transverse direction and Coupling protrusions 650 are respectively formed in the longitudinal direction. That is, the coupling groove 600 is formed in the longitudinal direction on the surface of the unit block 100 in contact with each other and the surface of the unit block 100 in contact with the unit block 100 in the longitudinal direction, the contact of each other of the unit block 100 The engaging projection 650 is fitted to the coupling groove 600 in the longitudinal direction to the surface in contact with the unit block 100 of the other side and the other cover block 550 is formed protruding.

The coupling groove 600 is formed long in the longitudinal direction, the engaging groove 610 is inclined in opposite directions so that the width of the coupling groove 600 is wider toward the inner side of the coupling groove 600 on the upper and lower sides of the coupling groove ( It is formed long in the 600) direction. In addition, the coupling protrusion 650 is formed to protrude in a shape corresponding to the coupling groove 600 on both sides in a longitudinal direction facing the coupling groove 600 of the unit block 100 and the cover block 550. That is, the upper and lower side surfaces of the coupling protrusion 650 is widened toward the end side so that the outer surface is inclined in the opposite direction so that the locking groove 610 of the coupling groove 600 can be caught in the opposite direction 660 It is formed in the longitudinal direction.

Accordingly, the plurality of unit blocks 100 and the cover blocks 500 and 550 are fitted to each other only in the longitudinal direction through the coupling groove 600 and the coupling protrusion 650, and then the common wire plate 300 is coupled to the plurality of units. When coupled to the block 100 to prevent the plurality of unit blocks 100 fall into each other in the longitudinal direction, the engaging groove 600 and the engaging projection 660 formed on both sides of the coupling groove 600 and the engaging projection 650. By this, the plurality of unit blocks 100 and the cover blocks 500 and 550 are prevented from being separated in the lateral direction.

At this time, the coupling holes 590 are vertically formed in one end portion of the cover blocks 500 and 550 in the longitudinal direction, respectively. Therefore, the integrated terminal block 1 can be fastened and fixed to the fixed object by the fastening bolts 595 through the coupling holes 590. At this time, the mounting groove 450 for fixing the strip-shaped name plate 3 on both sides of the upper longitudinal direction of the unit block 100 is formed. At this time, protruding jaws (not instructed) are formed on both sides of the inlet of the seating groove 450 to protrude in a direction facing each other so as to be caught on the upper side of the name plate 3. Accordingly, when the name plate 3 is seated in the seating groove 450, the name plate is prevented from being arbitrarily separated by the protruding jaw.

At this time, a plurality of fixing grooves 580 concave inwardly along the longitudinal direction are formed on upper surfaces of the cover blocks 500 and 500. Accordingly, the short bolt 400 is separated from the terminal terminal piece 200 so that the short bolt 400 can be inserted into the fixing groove 580 and stored therein to prevent the short bolt 400 from being lost. And on the surface facing each other on the top of the cover block (500,500) is formed a locking groove (not indicated) long in the longitudinal direction so that both ends of the safety cover (4), the safety cover (4) removable in the locking groove Will be combined.

At this time, one side of the first screw hole 202 of the terminal terminal piece 200, that is, a slot 210 that is opened outwardly in the width direction on one side of the side where the pair of first screw holes 202 face. ) Is formed. Therefore, the pressurizing terminal piece 250 can slide up and down through the slot 210.

In this case, the pressing terminal piece 250 is made of a cross-sectional design of the vertical terminal is mounted so as to be elevated in the slot 210 of the terminal terminal piece 200, the vertical guide coupled to the slot 210 to be slideable. Part 254 and the upper portion of the guide portion 254 is bent at a right angle to surround the upper portion of the first screw hole 202, the center portion is in communication with the first screw hole 202, the coupling formed with a screw on the inner wall surface The terminal 256 through which the ball 257 is formed, and the engaging portion 252 is bent at a right angle in the direction of the terminal portion 256 from the lower end of the guide portion 254 to be caught or spaced on the bottom surface of the terminal terminal piece 200. Is made of. At this time, immediately below the locking portion 252 of the pressing terminal piece 250 is provided with a spring 260 for holding the locking portion 252 upward, that is, supporting the pressing terminal piece 250 upwardly elastically. do.

In addition, the upper end of the screw portion (not indicated) of the fixing bolt 290 is provided with a shaft diameter portion 295 is not formed a screw shaft diameter smaller than the diameter of the screw portion. That is, the upper end of the screw portion of the fixing bolt 290 is provided with a shaft diameter portion 295 that is relatively reduced in diameter than the inner diameter of the coupling hole 257. Accordingly, when the terminal portion 256 of the pressing terminal piece 250 is tightened to be pressed by the terminal terminal piece 200 using the fixing bolt 290, the terminal portion 256 is formed on the upper end diameter portion 295 of the screw portion of the fixing bolt 290. Coupling hole 257 of the position is located, and in this state, when the fixing bolt 290 is released, the screw shaft diameter portion 295 of the fixing bolt 290 is idle in the coupling hole 257 of the terminal portion 256, the first Only the screw hole 202 is released and the pressure terminal piece 250 is spaced apart from the terminal terminal piece 200.

Accordingly, when the pressing terminal piece 250 is fastened and fixed to the first screw hole 202 of the terminal terminal piece 200, that is, the coupling hole 257 of the terminal portion 256 of the pressing terminal piece 250 is fixed. Tightening the fixing bolt 290 to the first screw hole 202 through, as shown in Figure 9a, the terminal portion 256 of the pressing terminal piece 250 is in close contact with the upper surface of the terminal terminal piece 200, the When the fixing bolt 290 is released from the first screw hole 202, as shown in FIG. 9B, the fixing bolt 290 is idle in the coupling hole 257 of the terminal part 256, and then, in the first screw hole 202. At the same time as the release, the engaging portion 252 of the pressing terminal piece 250 supported by the spring 260 upwardly is caught on the bottom surface of the terminal terminal piece 200.

Accordingly, when the fixing bolt 290 is released, the terminal part 256 of the pressing terminal piece 250 is rotated idle in the coupling hole 257 and is always in a coupled state, and the locking portion 252 of the pressing terminal piece 250 is Since the spring 260 is held in a state of being caught by the bottom surface of the terminal terminal piece 200, that is, the fixing bolt 290 and the pressing terminal piece 250 are fixed to one side of the terminal terminal piece 200. As it can be always maintained as it is possible to prevent the pressurized terminal piece 250, as well as the fixing bolt 290 is lost, as well as a very easy and simple terminal coupling.

At this time, both sides of the bottom surface of the terminal block 1, that is, the front and rear sides of the unit block 100 and the cover block (500, 550) of the terminal block 1 in the longitudinal direction (the unit block and the cover block of the terminal block 1) A pair of rail coupling grooves 900 and 950 concave inwardly in the thickness direction) are formed. At this time, one of the pair of rail coupling groove (900,950) of one side of the rail coupling groove 900, that is, on one side of the inner wall surface located on the outer side of the block engaging groove 910 of the terminal block (1) It is formed in the longitudinal direction (thickness direction of the unit block and the cover block).

And on one inner wall surface of the other rail coupling groove 950 of the pair of rail coupling grooves (900,950), that is, in the center of one inner wall located on the outer side of the rail coupling groove 950 of the cover block (500,550) position A locking member 960 protruding from the outer side of the cover blocks 500 and 550 toward the rail coupling groove 950 is provided.

Therefore, the two sides of the support rail 2 in the width direction is seated on the pair of rail coupling grooves (900,950), as shown in Figure 10, one side of the support rail (2) is formed in one side rail coupling groove (900) When the locking member 960 is mounted in the direction of the rail coupling groove 950 in the state of being seated in the rail coupling grooves 900 and 950 so as to be caught by the locking groove 910, the terminal block is connected to the other side of the support rail 2. The unit block 100 and the cover blocks 500 and 550 of (1) can be fixed to the support rails 2.

Therefore, the unit blocks 100 and the cover blocks 500 and 550 of the terminal block 1 according to the present invention are not inserted or removed from one end of the support rail 2 as in the prior art, Since it can be fixed by walking on one side, the terminal block (1) can be easily and easily fixed and detached from the support rail (2).

Meanwhile, although the locking member 960 is provided in the cover blocks 500 and 550 in the illustrated embodiment, the locking member 960 may be provided on the unit block 100 side.

At this time, both sides of the thickness direction of the unit block 100 are opened at the center of the bottom surface of the unit block 100 of the terminal block 1, that is, the sides of the terminal block 1 are opened at both sides in the longitudinal direction of the terminal block 1 but are downward at the bottom surface center. A first groove 700 formed with a protruding locking protrusion 720 is formed, and a first locking jaw 710 protruding inward in a direction facing each other is formed at the centers of both inner wall surfaces of the first groove 700. . At this time, both ends of the locking projection 720 is inclined toward the end is formed inclined portion (not indicated) so that the engaging hole 812 of the fixing bracket 800 to be described later easily caught on the locking projection 720 In addition, it can be easily released.

In addition, a second groove 750 is formed in the center of the bottom surfaces of the cover blocks 500 and 550 of the terminal block 1 so as to communicate with the first groove 700. A second catching jaw 760 protruding inwardly in a direction facing each other is formed at the centers of both inner wall surfaces of the 750, and the first groove is also formed at the center of the bottom surface of the second grooves 750. Like the groove 700, the locking projection 720 is formed.

In this case, the first and second grooves 700 and 750 are provided with fixing brackets 800 which are mounted on both ends of the terminal block 1 according to the operation to fix the terminal block 1 to the fixed object. The fixing bracket 800 is bent in a stepped manner and is slidably coupled to the first and second grooves 700 and 750, but is separated from the lower side of the terminal block 1 by the first and second locking jaws 710 and 760. The prevented plate-shaped sliding portion 810 and the horizontal fixing portion 830 is bent stepwise parallel to each other at the end of the sliding portion 810.

In this case, the fixing part 830 is formed so as not to protrude downward of the terminal block 1 when the slide position is moved into the terminal block 1. That is, the first and second grooves 700 and 750 are bent so as not to protrude outward. At this time, the locking hole 812 is formed in the center of the sliding part 810 so that the locking protrusion 720 formed in the first and second grooves 700 and 750 is caught, and the fixing screw 830 is provided with a fixing screw ( Fixing hole 832 is formed to be fixed to the object to be fixed (not shown). At this time, even if the fixing bracket 800 is raised to both sides of the terminal block 1, the sliding part 810 is located in the first and second grooves 700 and 750 so that the unit block 100 is before and after the terminal block 1. This prevents the side from being separated.

Accordingly, when the fixing bracket 800 is pushed into the terminal block 1, the locking protrusion 720 of the first groove 700 is inserted into the locking hole 810 of the sliding part 810 of the fixing bracket 800. It is caught and maintained in a fixed state of the fixing bracket 800, and used to slide out and out of the terminal block (1) if necessary.

According to this configuration, the terminal block 1 is coupled to the coupling groove 600 in the longitudinal direction to the unit block 100 and the cover block (500,550) to be fitted in the width direction rather than the longitudinal direction of the terminal block (1). The protrusions 650 are formed, respectively, and the unit blocks 100 and the cover blocks 500 and 550 are fitted to each other only in the longitudinal direction, and then the assembly of the common wire plate 300 and the fixing bracket 800 is completed. Since it is possible to install a separate fixing bracket as well as a screw and nut as in the related art, the number of parts is small and the assembly is very easy and simple as compared to fastening the fixing bracket as well as the unit block and the cover block through the screw and nut. This has the advantage of improving productivity and lowering the cost of the product.

In addition, the pressing terminal piece 250 is maintained idle at all times by being idle in the coupling hole 257 of the terminal portion 256 when the fixing bolt 290 is released, the locking portion 252 of the pressing terminal piece 250 Since the spring 260 is held in the state of being caught on the bottom surface of the terminal terminal piece 200, that is, even if the fixing bolt 290 is released, the pressing terminal piece 250 is connected to the terminal terminal piece 200. Since the fixing bolt 290 is maintained in a state coupled to the pressing terminal piece 250, the pressing terminal piece 250 can be easily brought into close contact with the terminal terminal piece 200, as well as the pressing terminal piece 250 and the fixing bolt. The 290 can be prevented from being lost, as well as having the advantage of easily and conveniently fixing and removing the terminal.

Then, the terminal block 1 is seated in the rail coupling grooves 900 and 950 on one side of the support rail 2, and then the latching member 960 is mounted in the direction of the rail coupling groove 950 to support the rail 2. The terminal block 1 is easily fixed to the support rail 2 when the other side of the terminal block 1 is pulled out, and the terminal block 1 is pulled out of the terminal block 1 by the support rail 2. Can be easily removed from

As described above, according to the present invention, the terminal block is fitted with the unit block and the cover block in the longitudinal direction, and the terminal block is integrated when the common conductor plate and the fixing bracket are fitted, so that a separate fixing bracket and screw as in the prior art And a nut, and the number of parts is small, as well as easy and simple to assemble, thereby improving productivity and lowering the cost of the product. As well as the pressurized terminal piece, the fixing bolt can be kept in a state provided on one side without being completely separated from the terminal terminal piece, which is very convenient to use and has the advantage of preventing the fixing terminal piece and the fixing bolt from being lost. .

In the above, the features of the present invention have been shown and described with reference to preferred embodiments, but the present invention is not limited to the above-described embodiments, and the present invention belongs to the scope of the present invention without departing from the objects, configurations, and effects thereof. Various modifications may be made by those skilled in the art.

Claims (9)

The terminal terminal piece 200 is horizontally disposed in the horizontal direction and is disposed in the horizontal direction in the center, but a plurality of press terminal pieces 250 are seated and fixed by fixing bolts 290 on the upper surfaces of both ends of the terminal terminal piece 200. A unit wire 100 and a common wire plate 300 which is horizontally fitted in a horizontal state at an upper center of each unit block 100 so as to intersect the upper portion of each terminal terminal piece 200; Short bolt 400 which penetrates the common lead plate 300 at a predetermined interval and is coupled to or separated from each terminal terminal piece 200 to form or turn off a common circuit, and the plurality of units In the terminal block (1) consisting of a pair of cover blocks (500, 550) covering the outside of the unit block 100 located at both ends of the block 100, The plurality of unit blocks 100 and the pair of cover blocks 500 and 550 face each other, and the coupling groove 600 and the coupling protrusion 650 are formed in the longitudinal direction so as to be fitted to each other, respectively, the coupling groove ( The upper and lower inner wall surface of the 600 and the upper and lower outer wall surface of the coupling protrusion 650, the terminal block, characterized in that the engaging groove 610 and the locking jaw 660 is formed in the longitudinal direction to be engaged with each other in the longitudinal direction. The method of claim 1, wherein one end of the cover block (500,550) is formed with a coupling hole 590 penetrating vertically, through which the fastening bolt (595) to be fixed to the fixed object through the coupling hole (590) Characterized by a terminal block. According to claim 1, Slot terminal 210 is formed long in one direction on one side in the width direction of both ends of the terminal terminal piece 200, The pressurized terminal piece 250 is vertically bent at the upper end of the guide part 254 and the guide part 254 slides up and down in the slot 210, and fixed to the terminal terminal piece 200, bolt 290 Terminal portion 256 that is seated or spaced apart from the lower end of the guide portion 254 and bent at right angles to the terminal portion 256 toward the locking portion 252 that is hung or spaced on the bottom surface of the terminal terminal piece 200. Done, Directly below the locking portion 252 of the pressing terminal piece 250, the terminal block, characterized in that the spring 260 for holding the locking portion 252 upward. The method of claim 3, wherein both ends of the terminal terminal piece 200 and the center of the terminal portion 256 of the pressing terminal piece 250, the fixing bolt 290 is screwed to the first screw hole 202 and the coupling hole ( 257) each formed, The upper end of the screw portion of the fixing bolt 290 is a terminal block characterized in that the shaft diameter portion (295) is smaller than the inner diameter of the coupling hole 257 is not formed. According to claim 1, wherein the pair of rail coupling grooves 900 and 950 concave inward in the longitudinal direction of the terminal block (1) on the front and rear sides of the bottom of the unit block 100 and the cover blocks (500, 550) of the terminal block (1) Formed, A locking groove 910 is formed in the longitudinal direction of the terminal block 1 on an outer inner wall surface of one of the pair of rail coupling grooves 900 and 950, Terminal block, characterized in that the outer wall surface of the other rail coupling groove (950) is provided with a locking member (960) in the direction of the rail coupling groove (950). According to claim 1, wherein the center of the bottom surface of the unit block 100 is formed inwardly concave first grooves 700 to be opened to both sides in the longitudinal direction of the terminal block 1, both inner wall surfaces of the first grooves 700 The first engaging jaw 710 is formed to protrude inward in a direction facing each other, In the center of the bottom surface of the cover block (500,550) is formed a second groove 750 opening the side of the unit block 100 so as to communicate with the first groove 700 is formed on both inner wall surfaces of the second groove (750) A second catching jaw 760 protruding inwardly in a direction facing each other is formed, Terminal blocks, characterized in that the first and second grooves 700 and 750 are provided with fixing brackets 800 formed at one end thereof so that fixing holes 832 penetrate through the first and second grooves 700 and 750 so as to slide in and out of the terminal block 1. . The plate-shaped sliding part of claim 6, wherein the fixing bracket 800 is slidably coupled to the first and second grooves 700 and 750, and the locking hole 812 is formed at the center thereof so as to be caught by the locking protrusion 720. 810 and the terminal block is bent to be parallel to each other at the end of the sliding portion 810, the terminal block, characterized in that consisting of a horizontal fixing portion 830 is formed with the fixing hole (832). According to claim 7, wherein the locking projections 720 are formed in the center of the bottom surface of the first and second grooves 700 and 750 of the unit block 100, respectively, The terminal block, characterized in that the locking hole 812 is formed through the center of the sliding portion 810 of the fixing bracket 800 so that the locking projection 720 is caught. The terminal block of claim 8, wherein both ends of the locking protrusion 720 are inclined toward the end.

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