JP2001136611A - Distribution board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a distribution board in which a receiver blade of a circuit breaker is hard to be deformed and heat generation can be suppressed when a conducting bar is inserted and connected. SOLUTION: In this circuit breaker 2, an engaging part 58 at a tip of an elastic protruding segment 47 of an engaging member 48 gets over a part 57 to be engaged, and is arranged on a fixing base 7 in the state that the part 57 to be engaged is engaged with the engaging part 58. Consequently, it is regulated that the breaker 2 moves in the outward direction. In the circuit breaker 2, an anchoring part 39 installed in a protrusion 54 fitted in a recess 36 on the breaker side surface from below is inserted in a part 53 to be anchored. A fitting recessed part 39a on the lower surface of the anchoring part 39 is fitted in a fitting protruding part 53a installed on the lower surface of the part 53 to be anchored. As a result, movement in the upper direction is regulated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a distribution board to which circuit breakers are plugged in.

[0002]

2. Description of the Related Art Japanese Patent Laid-Open Publication No.
There is one which is found in JP 69530. The conventional distribution board has a feature that the insertion force can be reduced because the circuit breaker is inserted into the conductive bar from an oblique direction.

[0003]

Although the above-described conventional distribution board has an advantage in that the insertion force when the circuit breaker is inserted is reduced, the circuit breaker is also inserted into the conductive bar from an oblique direction. Therefore, the receiving blade may be deformed.
In this case, the insertion connection force with the conductive bar is weakened, which may cause heat generation.

The present invention has been made in view of the above circumstances, and an object of the present invention is to suppress the generation of heat when a conductive bar is inserted and connected, since a receiving blade of a circuit breaker is hardly deformed. It is to provide a distribution board that can do it.

[0005]

In order to achieve the above object, according to the first aspect of the present invention, a plurality of conductive bars vertically arranged in parallel, a bar mounting member for supporting the conductive bars, and one side are provided. A plurality of circuit breakers arranged side by side on at least one side in the short direction of the conductive bar by providing a receiving blade for inserting and connecting the conductive bar from the short direction and forming a hook on the other side, A base having a hooked portion for hooking a hooking portion of the circuit breaker and attaching the circuit breaker to the bar mounting member or the uppermost conductive bar. A mounting member having a locking portion facing the upper surface on one side of the circuit breaker is attached, and the receiving member is locked to the locking portion with the conductive bar inserted into the receiving blade on the upper surface on one side of the circuit breaker. A locked part is provided to prevent the blade from moving away from the conductive bar. The hook portion and the hook portion are formed at positions where the conductive bar is engaged when the circuit breaker is moved in a linear direction to be inserted into the receiving blade to prevent the circuit breaker from moving upward. It is characterized by the following.

According to a second aspect of the present invention, in the first aspect of the present invention, the hooking portion and the hooked portion move the circuit breaker in the direction of the conductive bar so that the hooked portion is hooked on the hooking portion. It is characterized in that it is formed at a position where it engages before being performed.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the hooked portion is formed so as to protrude outward from a side surface of the circuit breaker. It is characterized by being connected to the recessed recess.

According to a fourth aspect of the present invention, in any one of the first to third aspects of the present invention, the concave and convex fits into the hook portion and the hooked portion when the receiving blade is completely connected to the conductive bar. It is characterized in that a joining portion is provided.

According to a fifth aspect of the present invention, in any one of the first to fourth aspects of the present invention, a positioning projection for sandwiching a side surface of each circuit breaker is provided on one side of each circuit breaker of the base. It is characterized by having.

According to a sixth aspect of the present invention, in any one of the first to fifth aspects of the present invention, the locking member is provided with an elastic projecting piece projecting toward each circuit breaker, and the elastic projecting piece is provided with the elastic projecting piece. A locking portion is formed.

According to a seventh aspect of the present invention, in the sixth aspect of the present invention, the locking member has a base end connected to a rotation fulcrum portion having a base end of the elastic protruding piece connected thereto. Is provided with an operation piece extending to the opposite side.

According to an eighth aspect of the present invention, in the invention of the seventh aspect, the locking member is connected to an operation piece, and a locked portion of the circuit breaker is locked to the locking portion of the locking member. In this state, an extruded piece that abuts on one end surface of the circuit breaker is provided.

According to a ninth aspect of the present invention, in the invention of the seventh or eighth aspect, a positioning portion for a tip end of a pressing jig is formed on the operation piece.

According to a tenth aspect of the present invention, in any one of the first to ninth aspects of the present invention, the locked portion has an inclined shape that gradually protrudes upward from the most distal end in contact with the locking portion. It is characterized by being formed.

According to an eleventh aspect of the present invention, in any one of the first to tenth aspects of the present invention, the locking member has connecting portions formed on both sides in the direction in which the circuit breakers are arranged. I do.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments. (Embodiment 1) FIGS. 2 and 3 show an example of a distribution board 1 of the present embodiment. FIG. 1 shows a state in which a circuit breaker 2 is arranged on a fixed base 7 arranged on the distribution board 1. The main part of is shown.

The distribution board 1 of this embodiment comprises a box-shaped body 10 and a cover 11 attached to the opening of the body 10 so as to be openable and closable. As shown in FIG. A circuit breaker 3 and a plurality of branch circuit breakers 2 are provided. The operation handles H of the circuit breakers 3 and 2 are exposed to the outside through a window of the cover 11.

The circuit breaker 2 shown in FIG.
On one side of the inside, two units are arranged in upper and lower rows, and six units are arranged in each row. The three conductive bars 31 to 33 are arranged between the upper and lower two rows so as to extend in the direction in which the circuit breakers 2 are arranged.

FIG. 4 shows a mounting portion for mounting the circuit breakers 2 and 3 to the bottom of the body 10. This mounting portion has two side edges bent upward in FIGS. 4 and 5. Bases 4, which are arranged side by side on the bottom of the body 10 with a vertical interval in FIG.
4, a mounting base 5 made of an iron plate disposed so as to bridge between the bases 4 and 4, and a central recess of the mounting base 5 recessed to correspond to a gap between the bases 4 and 4. 5B, the resin conductive bar mounting base 6 and the side pieces 5A of the mounting base 5 disposed so as to cover the mounting base 6 and the base 4, respectively. A fixed base 7 made of resin for fixing the circuit breaker to be provided, and a fixed base 8 for a main circuit breaker made of an iron plate and having a side end fixed to one end of the bases 4 and 4 and arranged on the side. Consists of

More specifically, as shown in FIG. 3, the base 4 is fixed to the bottom of the body 10 by a fixing screw 12 inserted through a long hole 9 provided at one end.

As shown in FIG. 5, the mounting base 5 has a central portion recessed in the direction of the body 10 and side pieces 5A extending laterally from both sides of the central recess 5B to bend the bent pieces 4A on both sides of the base 4. It is mounted on the end face, and fixed so that the fixing screw 15 is fastened to the screw hole 16 on the side of the base 4 through the insertion hole 14 provided in each side piece 5A so as to bridge between the bases 4 and 4 on both sides. And
The central concave portion 5B fits between the bases 4 and 4.

The mounting base 6 is disposed in the central recess 5B. The bottom of the mounting base 6 has a round hole 1 formed in the central recess 5B.
A group of cylindrical portions 18 that fit into the group 7 is projected, and the cylindrical portion 18 is positioned by fitting the cylindrical portion 18 into the round hole 17. Support posts 13 for supporting the conductive bars 31 of the neutral pole N are integrally provided at the upper center of the portions protruding from both ends of the central recess 5B.

The conductive bar 31 is provided with mounting pieces 3 formed at both ends.
By fastening a fixing screw 37 to a nut 38 housed and fixed in the concave portion 34 at the upper end of the support post 13 through an insertion hole 31b formed in 1a, a bridge is arranged between the support posts 13 at both ends. .

The flat portions on both sides of the central portion connecting between the support posts 13 at both ends are arrangement portions for arranging the conductive bars 32.33 of the voltage poles of L1 and L2. , Pins 19 for supporting the fixed base 7 are integrally provided upright at predetermined intervals in both end directions.

Between the support posts 13 at both ends, leg pieces 20 integrally formed from the conductive bars 32, 33 are formed.
A support rib 22 for the leg 21 at a higher position inside a circuit breaker connecting portion, which will be described later, and a rib 23 along the base 28 of the leg 20, 21 protrude.

The conductive bars 32, 33 are arranged and fixed at respective positions on the mounting base 6 before the fixing bases 7, 7 are arranged.

The conductive bars 32 and 33 are formed in the same shape and are arranged symmetrically. At both ends, there are provided insertion holes 25 through which fixing screws 24 are inserted. It is configured to be fixed by being fastened to a nut 27 arranged in a concave portion 26 of the mounting base 6 through the hole 25.

When the conductive bars 32 and 33 are arranged, the base 28 is bent up at regular intervals from the side edge which is on the inside so as to correspond to the number of the circuit breakers 2, and one side of the upper end of the base 28 is provided. Then, the leg piece 20 is further horizontally extended toward the outside direction, and an extension piece bent in an inverted L shape so that the horizontal piece faces inward is provided at the upper end of the base 28 adjacent to the leg piece 20. It is formed. The leg piece 20 and the leg piece 21, which is a horizontal piece of the extension piece, constitute a circuit breaker connection portion which is inserted and connected to a voltage electrode terminal connection portion described later provided on one end side of the circuit breaker 2.

The fixed base 7 is disposed so as to extend over the mounting base 6 and the side pieces 5A of the mounting base 5 after the conductive bars 32, 33 are disposed on the mounting base 6. At this time, the fixed base 7
The locking claws 29 projecting and locking at four places from the back surface of the side piece 5
The fixed base 7 is fixed by being inserted and locked in the locking hole 30 formed in A.

As shown in FIG. 11, on the upper surface of the fixed base 7, a positioning projection 35 for positioning the both sides of the body of the circuit breaker 2 is sandwiched, and one end provided with the terminal connection portion. Is inserted into an inverted L-shaped recess 36 having a side and a lower end opened at the lower part of both side surfaces of the other end of the opposite body from the lower surface opening of the recess 36, and the circuit breaker 2 is moved by The hook 39 formed by the horizontal piece is inserted into the hooked portion 53 formed by the lateral concave portion of the recess 36 so that the hook 39
The number of the circuit breakers 2 is arranged such that the convex fitting portion 53a formed on the bottom of the hooked portion 53 is fitted into the concave fitting portion 39a formed on the lower surface of the hooked portion 53 and the inverted L-shaped projection 54 is hooked and locked. Correspondingly, they protrude integrally.

The fixing base 8 is formed by fixing a fixing piece 40 protruding from one end to one end of the bases 4, 4 with fixing screws 61.
4 and a fixing piece 40 'protruding from the other side.
Is fixed to the bottom of the body 10 with a fixing screw 61 ′, and is disposed in the body 10.
Is fixed with a screw.

The load side terminals of the main circuit breaker 3 are L1 and L
2 and the conductive bars 44, 45 and 46 of the neutral pole N
Are connected to the respective conductive bars 32, 33 and 31.
This connection is made by the conductive bars 32, 3 on the main circuit breaker 3 side.
This is performed by overlapping the ends of the conductive bars 44, 45, 46 on the ends of the base plates 3, 31 and fixing them with fixing screws 24, 24, 37.

On the upper surface of the conductive bar 31 bridged between the support posts 13, 13, a locking member 4 having an elastic protruding piece 47 facing the upper surface of the circuit breaker 2 disposed on both sides.
8 (see FIGS. 6 and 7).

The locking member 48 is made of a synthetic resin molded product, and corresponds to each of the three circuit breakers 2 on both sides.
The conductive bar 31 is arranged in two sets, and each locking member 48 is provided on both sides of the lower surface as shown in FIG.
A support table 49 placed on the upper surface of the first base plate 1 is integrally locked, and two columnar projections 50 are press-fitted into a round hole 56 formed in the conductive bar 31 between the support tables 49. One elastic protruding piece 47, one end of which is supported by a connecting piece so as to be swingable, is provided on each side of the support table 49 and between the adjacent projections 50, and between the two projections 50, 50. It is integrally formed. When attached to the conductive bar 31, the distal end of each elastic projecting piece 47 projects so as to face the upper surface of the inside position of the circuit breaker 2 arranged at the regular position. On both sides of the distal end portion, locking portions 58 for locking to two projecting locked portions 57 arranged in parallel on the upper surface at the inner position of the circuit breaker 2 are formed to protrude to the side.

The circuit breaker 2 is fixedly arranged on the fixed base 7 in a state where the mounting portion constructed as described above is arranged on the bottom of the body 10.

Here, the circuit breaker 2 used in the present embodiment has a built-in two-pole opening / closing mechanism therein, and as shown in FIG. The conductive bar insertion ports 41, 42, 43 into which the circuit breaker connection portions of the conductive bars are inserted are opened in the steps, and the height position of the conductive bar insertion ports 41 in the upper stage is set when the fixed base 7 is disposed. It corresponds to the height position of the uppermost conductive bar 31, and the middle conductive bar insertion port 42 is the conductive bar 32 or 33.
Of the conductive bar 32 or 33 corresponds to the height position of the leg 20 of the conductive bar 32 or 33.

In this embodiment, as shown in FIG. 1, a receiving blade serving as a terminal connecting portion for inserting and connecting a circuit breaker connecting portion formed of a side edge of the conductive bar 33 of the neutral pole N in the upper conductive bar insertion opening 41. 51, and L1 or L2 is inserted into one of the middle and lower conductive bar insertion holes 42 and 43.
Circuit breaker connection 21 of conductive bars 32 and 33 of
Alternatively, a receiving blade 52 into which the receiving blade 20 is inserted is provided, and the other receiving portion is provided with no receiving blade.

The receiving blade 52 corresponding to the voltage pole is moved to the position of the conductive bar insertion port 42 or 43 by moving the slide lever 60 exposed on the side of the body as shown in FIG. 1 up or down. In two groups of circuit breakers arranged in upper and lower rows,
The voltage poles of L1 and L2 to be connected so as to balance the load can be easily selected.

In arranging and fixing the circuit breaker 2 to the fixed base 7, the conductive bar insertion port side is located between the pair of projections 35 on the fixed base 7 at the position where the circuit breaker 2 is to be arranged. The lower part of the body at one end is fitted, and the projection 5 is formed from the lower opening of the recess 36 on both sides of the body at the other end.
4 is fitted in the recess 36 and placed on the fixed base 7 as shown in FIG. At this time, the tip of the corresponding elastic projecting piece 47 of the locking member 48 faces the upper surface of the circuit breaker 2.

In this state, when the circuit breaker 2 is linearly moved in the direction of the conductive bar arrangement position as shown in FIG. 10, the circuit breaker connection which is the side edge of the conductive bar 31 of the neutral pole N is connected to the conductive bar insertion port 41. Is inserted to face the opening of the receiving blade 51, and the leg 21 of the conductive bar 31 or 32 of the voltage electrode of L1 or L2 is inserted into the conductive bar insertion port 42 in the middle stage, and the conductive bar insertion port in the lower stage is further inserted. 43 is L2
Alternatively, the leg 2 of the conductive bar 32 or 31 of the voltage electrode of L1
0 is inserted, and the leg piece 20 faces the receiving blade 52 arranged in the conductive bar insertion port 43 in the figure.

On the other hand, with the linear movement of the circuit breaker 2, the inclined surface 58 a of the lower surface of the locking portion 58 of the corresponding elastic protruding piece 47 of the locking member 48 forms the locked portion 57 formed on the upper surface of the circuit breaker 2. As shown in the figure.

When the circuit breaker 2 is further moved from this state, the locking portion 5
8, the inclined surface 58a slides on the inclined surface 57a of the locked portion 57 and climbs over, and eventually gets over the locked portion 57, and the elastic projecting piece 47 returns to its original position due to elasticity.
Therefore, the locked portion 57 of the circuit breaker 2 is locked by the locking portion 58. This restricts the movement of the circuit breaker 2 in the outward direction (the direction in which the conductive bar is pulled out from the receiving blade). On the other hand, the projection 5 fitted into the recess 36 from below.
The hook 39 provided on the hook 4 is inserted into the hook 53 with the movement of the circuit breaker 2, and a fitting recess 39 a provided on the lower surface of the hook 39 is provided on the lower surface of the hook 53. As shown in FIG. 1, the fitting projections 53a are fitted into the projections 53a. At the time of the concave and convex fitting, a so-called click feeling is given to the operator, and the circuit breaker 2 is in the fixed position, that is, the receiving blades 51, 52
Then, the operator is informed that the circuit breaker connection portion of the conductive bar 31, 32 or 33 has been completely inserted. It can be suppressed. Then, the upward and downward movement of the circuit breaker 2, that is, the movement in the direction perpendicular to the surface of the fixed base 7, is restricted by the concave-convex fitting of the hooked portion 53 and the hooking portion 39. Further, since the hook portion 39 and the projection 54 are accommodated in the recess 36 and the hooked portion 53, the gap between the adjacent circuit breaker 2 can be reduced.

In this manner, the circuit breaker 2 can be easily mounted on the fixed base in the distribution board and electrically connected.

When the circuit breaker 2 disposed on the fixed base 7 is to be removed as shown in FIG. 1 or FIG. 11, the operation provided on the base end of the elastic projecting piece 47 of the locking member 48 is performed. The piece 62 is pushed downward by the driver 63 as shown in FIG. 12, and the connecting piece to which the base end of the elastic protruding piece 47 is connected is used as a pivot point, and the elastic projecting piece 47 is turned around the pivot point. The circuit breaker 2 is moved to move the distal end thereof upward, and the locking portion 58 at the distal end is disengaged from the locked portion 57 of the circuit breaker 2.
As a result, the circuit breaker 2 can be moved in the tripping direction. If the circuit breaker 2 is linearly moved in the tripping direction in this state, the fitting of the hooked portion 53 and the hooking portion 39 becomes disengaged. Then, the circuit breaker 2 is moved until the hook 39 moves above the lower surface opening position of the recess 36, and then the circuit breaker 2 can be removed by lifting it upward.

In the present embodiment, the engaging member 48 is attached to the conductive bar 31. However, the engaging member 48 may be attached to the support post 13 which is a bar attaching member. (Embodiment 2) FIG.
As shown in FIG.

Since the basic configuration of this embodiment is the same as that of the first embodiment, the same reference numerals are given to the same components as those of the first embodiment, and the configurations other than the characteristic portions are the same as those of the first embodiment. The description is omitted here with reference to the drawings.

Next, the configuration of the present embodiment will be described in detail.

First, the locking member 48 of this embodiment is connected to the back surface of the operation piece 62, and the locked portion 57 of the circuit breaker 2 is locked to the locking portion 58 of the locking member 48. In this state, an extruded piece 64 is provided to abut on one end face of the circuit breaker 2. Further, a hole-shaped positioning portion 65 for positioning the jig by inserting a tip of a jig such as a screwdriver to be pressed is formed at a front end portion of the surface of the operation piece 62. When pressing, the tip of the jig is positioned by the positioning portion 6.
5 makes it difficult for the tip of the jig to come off, and the circuit breaker 2 can be easily removed.

The locking member 48 is provided as a connecting portion for connecting with another adjacent locking member 48 on one end surface of support tables 49, 49 provided at both ends corresponding to the juxtaposition direction of the circuit breaker 2. A dovetail groove 66 for joining is provided on the other end face.
Is formed, and the adjacent locking members 48 are connected to each other by fitting the dovetail 67 of the other locking member 48 into the dovetail groove 66 of one locking member 48. Then, the locking member 48 is firmly attached by this connection.

In this embodiment, when removing the circuit breaker 2 mounted on the fixed base 7 as shown in FIG. With the operation piece 6 fitted in the positioning portion 65,
2 is pressed downward in the same manner as in the first embodiment. By this pressing, the connecting piece to which the base end of the elastic protruding piece 47 is connected is used as a rotation fulcrum, and the elastic protruding piece 47 is rotated around the rotation fulcrum to move the distal end thereof upward. The locking portion 58 of the circuit breaker 2
As shown in FIG. During this operation, the tip of the pushing piece 64 abuts on the side end face of the circuit breaker 2 as shown in the figure, accumulating the directional force for detaching the circuit breaker 2, that is, the force for removing the circuit breaker 2, and pressing the operating piece 62 as it is. When the locked portion 57 is disengaged from the stop portion 58, the circuit breaker 2 is pushed and moved in the removing direction, that is, rightward in the drawing by the accumulated force, so that the engagement between the hooked portion 53 and the hooking portion 39 is released. In this state, the hook 3 is moved upward above the opening position of the lower surface of the recess 36.
The circuit breaker 2 is moved until the 9 moves, and then the circuit breaker 2 can be removed if it is lifted upward.

[0051]

According to the first aspect of the present invention, a plurality of conductive bars arranged in a vertical direction, a bar mounting member for supporting these conductive bars, and a conductive bar inserted and connected to one side from the short side direction. A plurality of circuit breakers arranged in parallel with at least one side in the short direction of the conductive bar by disposing a receiving blade and forming a hook on the other side, and a cover for hooking the hooks of these circuit breakers. A base having a hook portion for mounting the circuit breaker,
In the distribution board provided with, a locking member having a locking portion facing the upper surface on one side of the circuit breaker is attached to the bar mounting member or the uppermost conductive bar, and the upper surface on one side of the circuit breaker is provided. A locking portion that is locked to the locking portion in a state where the conductive bar is inserted into the receiving blade and prevents the receiving blade from moving in a direction in which the receiving blade is disengaged from the conductive bar; When the circuit breaker is moved in the linear direction to be inserted into the receiving blade, the circuit breaker is formed at a position where it is engaged to prevent the movement of the circuit breaker in the upward direction, so that the circuit breaker is moved with respect to the conductive bar. The receiving blade can be connected to the conductive bar only by linearly moving the receiving blade, and the deformation of the receiving blade due to the positional deviation between the receiving blade and the conductive bar can be easily prevented. Also,
Since the circuit breaker can be attached to the base by linearly moving the circuit breaker, there is an effect that the work of attaching the circuit breaker to the base becomes easy.

According to a second aspect of the present invention, in the first aspect of the present invention, the hooking portion and the hooked portion move the circuit breaker in the direction of the conductive bar so that the hooked portion is locked by the hooking portion. Since it is formed at a position where it engages before the connection, the receiving blade of the circuit breaker cannot be connected to the conductive bar from an oblique direction and the deformation of the receiving blade can be completely prevented.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the hooked portion is formed so as to protrude outward from a side surface of the circuit breaker. Can be easily connected, so that the conductive bar can be connected to the receiving blade of each circuit breaker with high precision. Also, the hooking portions are adjacent to each other because the hooks are continuously provided in the recesses formed by recessing the lower side surface of the circuit breaker. The gap between the circuit breakers can be reduced.

The invention according to claim 4 is the invention according to claims 1 to 3.
In any one of the inventions described above, the hooking portion and the hooked portion include:
Since the concave and convex fitting portions are fitted when the receiving blade is completely connected to the conductive bar, if the concave and convex fitting portions are fitted to each other,
It is easy to see that the receiving blade is completely connected to the conductive bar, and it is possible to suppress variations in the insertion amount of the receiving blade.

The invention of claim 5 is the invention of claims 1 to 4
In any one of the inventions described above, the positioning protrusions which sandwich the side surface of each circuit breaker are provided on one side of each circuit breaker of the base, so that one side surface of each circuit breaker is aligned with the positioning protrusion. If the circuit breaker is moved in the direction of the conductive bar in this way, the conductive bar can be further accurately connected to the receiving blade of each circuit breaker.

The invention of claim 6 is the invention of claims 1 to 5
In any one of the inventions, the locking member is provided with an elastic protruding piece projecting toward each circuit breaker, and the elastic protruding piece is formed with the locking portion. When moved, the protected portion of each circuit breaker abuts the locking portion, whereby the elastic protruding piece is deformed upward, and when the protected portion exceeds the locking portion, the elastic protruding piece is Returning to the original position, the protected portion is locked by the locking portion, which facilitates the work of locking the circuit breaker to the locking member. Further, since the elastic protruding piece is formed for each circuit breaker, the elasticity can be easily obtained, and the work of mounting each circuit breaker becomes easy.

According to a seventh aspect of the present invention, in the invention of the sixth aspect, the locking member has a base end connected to a rotation fulcrum where the base end of the elastic projecting piece is connected. Is provided with an operation piece extending to the opposite side, so if the operation piece is suppressed, the elastic protruding piece is deformed upward around the rotation fulcrum, and the locking part and the protected part are locked. Can be released, and the work of removing the circuit breaker from the locking member becomes easy.

According to an eighth aspect of the present invention, in the invention of the seventh aspect, the locking member is connected to an operation piece, and a locked portion of the circuit breaker is locked to the locking portion of the locking member. In the state, the extruded piece was provided to abut on one end face of the circuit breaker,
As the operating piece is pressed, the pushing piece comes into contact with one end surface of the circuit breaker to accumulate the force in the direction to remove the circuit breaker, and then presses the operating piece as it is to move the locked section from the locked section to the locked section. When it is removed, the circuit breaker can be easily removed with the accumulated force, thereby facilitating the work of removing the circuit breaker.

The ninth aspect of the present invention is the seventh or eighth aspect.
In the invention of the above, since the positioning portion of the tip of the jig to be pressed is formed on the operation piece, the tip of the jig is hardly disengaged when the operation piece is pressed by the jig, and the work of removing the circuit breaker can be performed. It will be easier.

According to a tenth aspect of the present invention, in any one of the first to ninth aspects of the present invention, the locked portion has an inclined shape that gradually protrudes upward from the most distal end in contact with the locking portion. Since it is formed, the protected portion can be easily locked to the locking portion, and the work of mounting the circuit breaker becomes easy.

According to an eleventh aspect of the present invention, in any one of the first to tenth aspects of the present invention, the locking member has connecting portions formed on both sides in the direction in which the circuit breakers are arranged. The provided adjacent locking members can be connected, and the locking members can be firmly attached.

[Brief description of the drawings]

FIG. 1 is a partially cut-away side view of a main part showing an arrangement state of a circuit breaker according to an embodiment of the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a front view showing a state in which the cover is removed.

FIG. 4 is an exploded perspective view of the mounting portion according to the first embodiment.

FIG. 5 is an exploded perspective view of a main part of the mounting unit according to the first embodiment.

FIG. 6 is an exploded perspective view showing a relationship between the locking member and the conductive bar according to the first embodiment.

FIG. 7 is an exploded perspective view illustrating a relationship between the locking member and the circuit breaker according to the embodiment.

FIG. 8 is an exploded perspective view showing the relationship between the conductive bar group and the circuit breaker according to the embodiment.

FIG. 9 is a partially omitted and broken side view for explaining the arrangement of the circuit breaker according to the embodiment.

FIG. 10 is a partially omitted and cutaway side view for explaining the arrangement of the circuit breaker of the above.

FIG. 11 is a perspective view showing an arrangement relationship between the fixed base and the circuit breaker according to the third embodiment.

FIG. 12 is a partially omitted and cutaway side view for explaining the removal of the circuit breaker of the above.

FIG. 13 is an exploded perspective view showing a relationship between a locking member and a conductive bar used in Embodiment 2 of the present invention.

FIG. 14 is an exploded perspective view showing a relationship between the locking member and the circuit breaker according to the third embodiment.

FIG. 15 is an exploded perspective view of the mounting part according to the third embodiment.

FIG. 16 is a side view in which part of a main part showing the arrangement state of the circuit breaker according to the embodiment is partially omitted and broken.

FIG. 17 is a partially omitted and cutaway side view for explaining the removal of the circuit breaker of the above.

[Explanation of symbols]

 2 Circuit Breaker 7 Fixed Base 35 Positioning Protrusion 36 Concave 39 Hook 39a Fitting Recess 53 Locked Part 53a Fitting Convex 54 Projection

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yoshizo Kanehira 1048 Kazuma Kadoma, Osaka Prefecture Matsushita Electric Works Co., Ltd. (72) Inventor Tomoyuki Sawada 1048 Kazuma Kazuma Kadoma City Osaka Prefecture Matsushita Electric Works Co., Ltd. (72 Inventor Takashi Inashi 1048 Kazuma Kadoma, Kadoma City, Osaka Prefecture, Japan Matsushita Electric Works, Ltd. (72) Inventor Hatsune Mizuno 1048 Kadoma Kadoma, Kadoma City, Osaka Prefecture Inside Matsushita Electric Works, Ltd. (72) Wataru Nagano Kadoma, Osaka Prefecture 1048, Kazumasa Kadoma, Matsushita Electric Works Co., Ltd. (72) Inventor Tetsuyasu Kawamoto 1048, Kadoma Kadoma, Kadoma, Osaka Prefecture Inside, Matsushita Electric Works, Ltd. (72) Akihiko Hirao 1048, Kadoma Kadoma, Kadoma, Osaka Prefecture Matsushita Electric Works, Ltd. (72) Inventor Takanobu Tanaka 1048 Kadoma, Kadoma, Osaka Prefecture Inside Matsushita Electric Works, Ltd. (72) Inventor Masayoshi Kubo River Prefecture Kashima-gun, chicken coop-cho Haruki La 55 address fertile fields Electric Appliance Co., Ltd. in the (72) inventor Hideki Yoshida Ishikawa Prefecture Kashima-gun, chicken coop-cho Haruki La 55 address fertile fields Electric Appliance Co., Ltd. in

Claims (11)

[Claims] A plurality of conductive bars arranged vertically in a vertical direction, a bar mounting member for supporting the conductive bars, and a receiving blade for inserting and connecting the conductive bars from one side in a short direction; A circuit having a plurality of circuit breakers formed in parallel on at least one side in the short direction of the conductive bar by forming a hook portion on the other side, and a hooked portion for hooking the hook portions of these circuit breakers A base on which a circuit breaker is mounted, wherein the bar mounting member or the uppermost conductive bar has a locking member having a locking portion facing the upper surface on one side of the circuit breaker. At the same time, a locked portion is provided on the upper surface of one side of the circuit breaker, the locked portion being locked to the locking portion in a state where the conductive bar is inserted into the receiving blade to prevent the receiving blade from moving in the direction away from the conductive bar, The hooking portion and the hooked portion rotate in a linear direction in which the conductive bar is inserted into the receiving blade. A distribution board, wherein the switchboard is formed at a position where the circuit breaker is engaged when the circuit breaker is moved to prevent the circuit breaker from moving upward. 2. The hooking portion and the hooked portion are formed at positions where the hooked portion and the hooked portion are engaged with each other before moving the circuit breaker in the direction of the conductive bar and the hooked portion is locked by the locking portion. The distribution board according to claim 1, wherein: 3. The circuit according to claim 1, wherein the hooked portion is formed so as to protrude outward from a side surface of the circuit breaker, and the hooking portion is connected to a recess formed by recessing a lower side surface of the circuit breaker. Claim 1
Or the distribution board according to claim 2. 4. The engaging portion according to claim 1, wherein said engaging portion and said engaged portion are provided with concave and convex fitting portions which are fitted when said receiving blade is completely connected to said conductive bar. Or distribution board described. 5. The circuit as claimed in claim 1, wherein a positioning projection for sandwiching a side surface of each circuit breaker is provided on one side of each circuit breaker of the base. Electric board. 6. The locking member according to claim 1, wherein an elastic protruding piece is provided on each of the circuit breakers, the elastic protruding piece being provided on each of the circuit breakers, and the locking portion is formed on the elastic protruding piece. A distribution board according to any of the above. 7. An operation piece having a base end connected to a rotation fulcrum portion formed by connecting a base end of an elastic projecting piece to the locking member and extending to a side opposite to the elastic projecting piece. The distribution board according to claim 6, characterized in that: 8. A circuit breaker is provided on one end surface of the circuit breaker in a state in which the operating member is connected to the locking member and a locked portion of the circuit breaker is locked to the locking portion of the locking member. The distribution board according to claim 7, further comprising an extruded piece that abuts. 9. The distribution board according to claim 7, wherein a positioning portion for a tip of a jig to be pressed is formed on the operation piece. 10. The locking device according to claim 1, wherein the locked portion is formed in an inclined shape that gradually protrudes upward from a leading end side in contact with the locking portion. Distribution board. 11. The distribution board according to claim 1, wherein the locking member has connection portions formed on both sides in a direction in which the circuit breakers are juxtaposed.