JP2001157329A - Distribution board for housing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a distribution board for housing which assures easier inserting job for inserting a wire conductor into a body. SOLUTION: In the distribution board, a casing is constituted of a body 10 which is formed in the shape where the circumference wall 10b is projected in the forward direction for the entire part of the circumferential edge of a bottom plate 10a and a cover 11 coupled with the front surface side of the body 10. Within the body 10, an internal device block B comprising a plurality of branching switches 2, a main switch 3 and a primary feeding switch 90 or the like is accommodated. The internal device block B is provided with the main switch 3, a plurality of branching switches 2, and a mounting member to be mounted to the bottom plate 10a of the body 10. The bottom plate 10a is also provided with an opening for inserting a wire between the internal circumference edge of the wire inserting hole 70 and output terminal of each branching switch 2 under the condition where the internal device block B is mounted to the bottom plate 10a of body 10, and is also provided with a wire inserting hole 70 in such a size that the width in the parallel direction is longer than the distance between both ends of the branching switches 2 located in both sides in the parallel direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a house, an apartment,
The present invention relates to a distribution board for houses used in stores and the like.

[0002]

2. Description of the Related Art Conventionally, Japanese Patent Application Laid-Open No.
There is one disclosed in Japanese Patent Publication No. 315209. As shown in FIG. 16, this residential distribution board has a main switch 3 and a plurality of branch switches 2 disposed in a body 10 which is a part of a housing and has an opening at a front surface. It is. That is, in the residential distribution board shown in FIG. 16, the branch switches 2 are arranged in two rows in the body 10 in the upper and lower rows, and four switches are arranged side by side in each row in each row. Here, in the four branch switches 2 arranged side by side in the left and right direction, the output terminals are arranged in the left and right direction.

On the other hand, a plurality of knockout portions 119 are formed on the bottom surface 10a of the body 10 at a distance. That is, in the case where a wire conductor is connected to each output terminal 55 of the four branch switches 2 arranged in parallel in the upper row, FIG.
In the case where the wire conductor is connected through the wire insertion hole formed by punching out the knockout portion 119 at the upper right in the middle, and the wire conductor is connected to each output terminal 55 of the four branch switches 2 arranged side by side in the lower row , Knockout part 1 at the lower right in the figure
An electric wire conductor is connected through an electric wire insertion hole formed by stamping out the wire.

[0004]

In the above described distribution board for a house, the electric wire insertion holes for connecting to the output terminals 55 of the respective branch switches 2 are arranged in the lower row with the branch switches 2 arranged in the upper row. Since it differs from the side-by-side branch switch 2, for example, the wire conductor connected to the output terminal 55 of the upper (or lower) branch switch 2 is connected to the output of the lower (or upper) branch switch 2. When reconnecting to the terminal 55, it is necessary to reinsert the electric wire conductors into different electric wire insertion holes one by one.
After attaching the wire conductor to the wall of the building, the wire conductor must be inserted by groping to find the wire insertion hole, and it is difficult to insert the wire conductor into the body 10.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a residential power distribution panel that allows easy insertion of an electric wire conductor into a body.

[0006]

According to the first aspect of the present invention, in order to achieve the above object, a plurality of branch switches are juxtaposed on a mounting member such that output terminals are arranged in the juxtaposition direction of the branch switches. An inner unit block and a body having the inner unit block attached thereto and a single wire insertion hole formed in a bottom plate, wherein the electric wire insertion hole is provided with the inner unit block attached to the bottom plate. An opening through which an electric wire can be inserted is formed between the inner peripheral edge of the branch switch and the output terminal of each branch switch, and the width in the juxtaposition direction is greater than the distance between the end faces of the branch switches located on both sides in the juxtaposition direction. It is characterized in that it is formed in such a size that it is also long, which facilitates the insertion work of drawing the wire conductor into the body through the wire insertion hole, and reconnects the wire conductor to the branch switch. Easy work Ri, also, it is possible to improve the heat dissipation effect.

According to a second aspect of the present invention, in the first aspect of the present invention, the bottom plate includes a rib protruding forward from a periphery of the wire insertion hole, so that the wire conductor abuts on a periphery of the wire insertion hole. In this case, it is possible to prevent the covering of the wire conductor from being broken, and since the thickness of the peripheral edge of the wire insertion hole is thicker than other portions of the bottom plate, it is possible to form a relatively large wire insertion hole while forming the bottom plate. Rigidity can be maintained.

[0008] The invention of claim 3 is claim 1 or claim 2.
In the invention, the mounting portion for mounting one end side of the mounting member in a direction parallel to the juxtaposition direction so that the inner unit block is located on the front side with respect to the bottom plate, in the juxtaposition direction in the bottom plate Since it is provided at both ends in the parallel direction, if the length between both ends of the mounting member in the direction parallel to the juxtaposition direction is the same as the length between the mounting portions provided on the bottom plate, both ends of the mounting member If you attach each to the mounting part,
Since the inner unit block is in a state protruding to the front side from the bottom plate, the inner unit block can be attached to the bottom plate regardless of the insertion position of the wire conductor in a state where the wire conductor is passed through the wire insertion hole in advance, The work of attaching the inner unit block becomes easy.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the other end side of the mounting member is attached, and the bridge member is bridged across the wire insertion hole in the vertical direction on the front side of the bottom plate. Since a plurality of screw insertion holes for mounting the bridge member with screws on the upper and lower sides of the electric wire insertion hole are arranged side by side in the left and right direction of the bottom plate, one end of the mounting member in the left and right direction is used as the mounting portion. Attaching and fixing the inner unit block by attaching the other end of the mounting member to the bridge member, and attaching the bridge member in accordance with the length of the mounting member in the left-right direction allows the mounting member to be mounted in the left-right direction. Even if the internal unit blocks have different lengths, the body can be shared, thereby reducing costs and facilitating parts management.

According to a fifth aspect of the present invention, in the fourth aspect of the present invention, the screw insertion holes are arranged side by side in a lateral direction at an interval corresponding to a width dimension of the branch switch in the juxtaposition direction. The length of the member in the left-right direction can be manufactured according to the number of branch switches arranged side by side, and the manufacturing work of the mounting member is facilitated.

The invention of claim 6 is the invention of claim 4 or claim 5.
In the invention, a concave portion is formed on the rear surface of the bottom plate so as to surround the electric wire insertion hole over the entire circumference and the electric wire insertion hole side is opened, and the concave portion is formed up to a position exceeding the position of the screw insertion hole in the vertical direction. So
The rear cover having substantially the same thickness as the step of the concave portion can be attached to the concave portion on the rear surface of the bottom plate by using a screw that is screwed into the screw insertion hole, and the width of the rear cover that can be attached in the left-right direction can be attached. High degree of freedom.

The invention of claim 7 is the first to sixth aspects of the present invention.
In the invention of the present invention, since the electric wire insertion hole is formed in a square shape, a core of a cutter or a pencil is aligned with a peripheral edge of the electric wire insertion hole when marking a shape corresponding to the electric wire insertion hole on a wall of a building. Easier to do.

[0013]

(Embodiment 1) Hereinafter, an embodiment of the present invention will be described with reference to FIGS.

As shown in FIGS. 1 to 3, the residential power distribution panel of the present embodiment is formed in a rectangular frame shape and has a shape in which a peripheral wall 10b protrudes forward over the entire outer periphery of the bottom plate 10a. The body is formed by the formed body 10 and the cover 11 coupled to the front side of the body 10.

The cover 11 has an outer lid 8 which can be opened and closed freely.
4, a main switch window window 85 for exposing a part of the main switch 3 composed of a main circuit breaker with the outer lid 84 opened, and a branch switch 2 composed of a circuit breaker.
And a window hole 86 for exposing a part of a primary feed switch 90 composed of a circuit breaker. The inner lid 83 is provided with an outer lid 84 opened. Thus, the operation unit H of each of the switches 2, 3, 90 can be operated.

In the body 10, a plurality of branch switches 2,
An inner unit block B (see FIGS. 4 to 7) including the main switch 3 and the primary feed switch 90 is housed. The branch switch 2 has an input side electrically connected to the secondary side (output side) of the main switch 3. Primary feed switch 90
Is inserted into an emergency power supply system provided so as to secure power to emergency equipment such as a fire alarm and a fire extinguishing facility provided in each customer.
Is electrically connected to the primary side (power supply side) through feed lines 104, 105 and the like.

Here, as shown in FIG. 4, the branch switches 2 are arranged in upper and lower two rows in the body 10, and 12 switches are arranged in each row. Between these upper and lower two rows, three conductive bars 31, 32, 33 (see FIGS. 8 and 10) described later are arranged so as to extend in the direction in which the branch switches 2 are arranged. The upper row of branch switches 2 has an output terminal on the upper side, and the lower row of branch switches 2 has an output terminal on the lower side.

The inner block B has a main switch 3 and a plurality of branch switches 2 and a mounting member mounted on the bottom plate 10a of the body 10. As shown in FIG. 4 to FIG.
8, two bases 4, 4 which are made of an iron plate whose both side edges are bent upward in FIG. The two mounting bases 5 and 5 made of iron plate arranged so as to bridge between the bases 4 and the central recesses 5b of the mounting bases 5 recessed to correspond to the gaps between the bases 4 and 4 (FIG. 8)
Two conductive bar mounting bases 6 and 6 made of resin disposed therein, and side pieces 5a of the mounting base 5 disposed so as to cover the conductive bar mounting base 6 and the base 4, respectively. 4 made of resin for fixing a branch switch,
It is composed of one fixed base 7 and a fixed base 8 for a main switch made of an iron plate, the side end of which is fixed to one end of the bases 4 and 4 and which is disposed laterally.

As shown in FIG. 8, the mounting base 5 has a central recess 5b recessed in the direction of the body 10, and side pieces 5a extending laterally from both sides of the central recess 5b are bent pieces 4a on both sides of the base 4. And fixed to the screw holes 16 on the side of the base 4 through the insertion holes 14 provided in the side pieces 5a so as to bridge between the bases 4 and 4 on both sides. It is fixed, and the central concave portion 5b fits between the bases 4 and 4.

The conductive bar mounting base 6 is provided with the central recess 5.
The locking claws 60 are disposed in the center concave portion 5b, and are engaged with the locking holes 59 formed on both sides of the central concave portion 5b. It is positioned by doing. Support posts 13 for supporting the conductive bars 31 of the neutral pole N are integrally formed on one end side of each conductive bar mounting base 6.

As shown in FIGS. 9 and 10, the conductive bar 31 is provided with fixing screws 37 in the recesses 34 at the upper end of the support post 13 through insertion holes 31b formed in mounting pieces 31a formed at both ends. By fastening to a nut (not shown) which is stored and fixed, a bridge is arranged between the support posts 13.

The flat portions on both sides of the central portion connecting the support posts 13, 13 are conductive bars 32, L1 and L2 of voltage poles.
33 are disposed, and pins 19 for supporting the fixed base 7 are integrally erected at both ends in a predetermined interval on the upper surface beside these disposed portions.

A pair of leg pieces 20 extending integrally from the conductive bars 32, 33 are provided between the support posts 13, 13.
A separation wall 22 that separates each of the legs 21 and a rib 23 along the base 28 of the leg pieces 20 and 21 protrude. The leg piece 20 and the leg piece 21 constitute a branch switch connecting part which is inserted and connected to a voltage electrode terminal connecting part, which will be described later, provided on one end side of the branch switch 2.

Before the fixed base 7 is provided, the conductive bars 32 and 33 are disposed and fixed at respective positions on the conductive bar mounting base 6.

The conductive bars 32 and 33 are formed in the same shape and are symmetrically arranged. At both ends, there are provided insertion holes 25 through which fixing screws 24 are inserted. It is fixed by fastening to a nut (not shown) arranged in the concave portion 26 of the conductive bar mounting base 6 through the hole 25.

The fixed base 7 is disposed so as to extend over the conductive bar mounting base 6 and the side piece 5a of the mounting base 5 after the conductive bars 32 and 33 are disposed on the conductive bar mounting base 6. At this time, the locking claw 29 protruding from the back surface of the fixed base 7 is inserted and locked in the locking hole 30 formed in the side piece 5a, and the fixed base 7 is fixed.

On the upper surface of the fixed base 7, a branch switch 2 is provided.
A positioning projection 35 for positioning by sandwiching both side surfaces of the body, and both sides of the other end of the body opposite to the one end provided with the voltage pole terminal connection portion as shown in FIG. A hook portion 39 formed of a horizontal piece is inserted into an inverted L-shaped recess 36 having a side and a lower end opened at a lower portion of the surface through an opening on the lower surface of the recess 36. 36
Is inserted into the hooked portion 53 formed by the lateral concave portion, and the hooked portion 5 is inserted into the recess fitting portion 39a formed on the lower surface of the hooking portion 39.
The number of the branch switches 2 arranged with the inverted L-shaped projections 54 which engage with and engage with the convex fitting portions 53a formed on the bottom of the bottom 3 are integrally protruded.

The fixing base 8 for the main switch is formed by fixing a fixing piece 40 protruding from one side to one end of the bases 4, 4 with a fixing screw 6.
1 is fixed to the ends of the bases 4 and 4, and the fixing piece 40 'protruding from the other side is fixed to the body 10 with the fixing screw 61'. , The main switch 3 is screwed.

The load-side terminals of the main switch 3 are connected to the respective conductive bars 32, 33 and 31 via the conductive bars 44, 45 and 46 of the voltage poles L1 and L2 and the neutral pole N. This connection is performed by overlapping the ends of the conductive bars 44, 45, 46 on the ends of the conductive bars 32, 33, 31 on the side of the main switch 3, and being fixed by 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 branch switch 2 arranged on both sides.
8 (see FIGS. 7 and 10).

The locking member 48 is made of a synthetic resin molded product and corresponds to each of the four branch switches 2 on both sides.
The conductive bar 31 is arranged in three sets, and each locking member 48 has a projection (not shown) which is press-fitted into a round hole 56 formed in the conductive bar 31 and integrally protrudes from the lower surface. The elastic protruding pieces 4 each having one end swingably supported by the connecting piece.
7 (see FIG. 7) are integrally formed on each side, four each. Then, when attached to the conductive bar 31, the branch switch 2 in which the distal end of each elastic protruding piece 47 is arranged at a proper position.
Are projected so as to face the upper surface of the inside position of the switchgear. On both sides of the respective leading end portions, two projection-shaped locked portions 57 arranged side by side on the upper surface of the inside of the branch switch 2 are locked. A locking portion 58 is formed to protrude laterally.

The branch switch 2 is fixedly disposed on the fixed base 7 in a state where the mounting member configured as described above is mounted on the body 10.

The branch switch 2 used in this embodiment has a built-in two-pole switch mechanism therein. As shown in FIG. 7, one end of the body has an upper, middle, and lower switch. The conductive bar insertion openings 41, 42, into which the branching switch connecting portions of the conductive bar are inserted in the steps (the right side in FIG.
43, the height position of the upper conductive bar insertion port 41 corresponds to the height position of the uppermost conductive bar 31 when disposed on the fixed base 7, and the middle conductive bar insertion port Reference numeral 42 corresponds to the height position of the leg 21 of the conductive bar 32 or 33, and the lower conductive bar insertion port 43
Corresponds to the height position of the leg piece 20 of the conductive bar 32 or 33.

In this embodiment, as shown in FIG. 7, a receiving blade serving as a terminal connecting portion for inserting and connecting a branch switch connecting portion formed of a side edge of the conductive bar 33 of the neutral pole N in the upper conductive bar insertion port 41 as shown in FIG. 51, and L1 or L2 is inserted into one of the middle and lower conductive bar insertion holes 42 and 43.
Branch switch connecting portion 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 can be moved to any position of the conductive bar insertion port 42 or 43. In the branch switch 2 group arranged in upper and lower two rows, load balance is performed. , The voltage poles of L1 and L2 to be connected can be easily selected.

In arranging and fixing the branch switch 2 to the fixed base 7, the conductive bar insertion port side is located between the pair of protrusions 35 on the fixed base 7 at the position where the branch switch 2 is to be disposed. 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 (at this time, the tip of the corresponding elastic projecting piece 47 of the locking member 48 faces the upper surface of the branching switch 2), and in this state, the branching is performed. Switch 2
Is linearly moved in the direction of the conductive bar arrangement position, the branch switch connecting portion, which is the side edge of the conductive bar 31 of the neutral pole N, is inserted into the conductive bar insertion port 41 and faces the opening of the receiving blade 51,
L1 or L2 is inserted into the conductive bar insertion port 42 in the middle stage.
The leg 21 of the conductive bar 31 or 32 of the voltage pole is inserted, and the leg 20 of the conductive bar 32 or 31 of the L2 or L1 voltage electrode is inserted into the lower conductive bar insertion port 43. The leg piece 20 faces the receiving blade 52 arranged in the conductive bar insertion port 43.

On the other hand, with the linear movement of the branching switch 2, the inclined surface 58a of the lower surface of the locking portion 58 of the corresponding elastic projecting piece 47 of the locking member 48 is a locked portion formed on the upper surface of the circuit breaker 2. When the branch switch 2 is further moved from this state while being in contact with the inclined surface 57a of the locking member 57, the inclined surface 58a of the locking portion 58 is placed on the inclined surface 57a of the locked portion 57 while elastically deforming the elastic projecting piece 47. , And eventually rides over the locked portion 57, and the elastic projecting piece 47.
Is restored by elasticity. Therefore, the locked portion 57 of the branch switch 2
Is locked to the locking portion 58. This restricts the branch switch 2 from moving outward (in a direction in which the conductive bar is pulled out from the receiving blade). On the other hand, the hooking portion 39 provided on the projection 54 fitted into the recess 36 from below is inserted into the hooked portion 53 with the movement of the branching switch 2, and eventually the fitting provided on the lower surface of the hooking portion 39. The concave portion 39a is fitted into the fitting convex portion 53a provided on the lower surface of the hooked portion 53 with the concave and convex. At the time of this concave / convex fitting, a so-called click feeling is given to the operator, and the branching switch 2 is set to the fixed position, that is,
The operator is informed that the branch switch connection portion of the conductive bar 31, 32 or 33 has been completely inserted into the position 52, and the variation in the insertion amount of the branch switch connection portion with respect to the receiving blades 51, 52. Can be suppressed. Then, by the concave-convex fitting of the hooked portion 53 and the hooking portion 39, the movement of the branch switch 2 in the upward direction, that is, in the direction perpendicular to the surface of the fixed base 7, is restricted. Also hook 3
Since the projection 9 and the projection 54 are accommodated in the recess 36 and the hooked portion 53, the gap between the branch switch 2 and the adjacent switch 2 can be reduced.

In this way, the branch switch 2 can be easily mounted on the fixed base 7 in the housing of the distribution board and electrically connected.

Further, on the fixed base 8 for the main switch, a fixture 64 on which the primary feed switch 90 is disposed is provided with a fixing screw 6.
7 is attached. The attachment 64 is formed of an iron plate having a bent piece 64 a bent toward the fixed base 8, and an insertion hole through which the fixing screw 67 is inserted from the bent piece 64 a located on the main switch 3 side. A fixing piece 64b having a hole 66 is extended. On the other hand, the fixing base 8 for the main switch is provided with an insertion hole 130 through which the tip of the fixing screw 67 is inserted. In addition, the mounting fixture 64 includes:
Positioning pieces 65 that abut against both side surfaces of the primary feed switch 90 and position the primary feed switch 90 in the left-right direction in FIG. 4 are integrally provided.

Further, a hook hole 9 formed at a lower portion of one end face of the body of the primary feed switch 90 from one end of the fixture 64.
A hook claw 68 hooking the hook 4 is integrally formed with the terminal block 110 of the connection conversion device for electrically connecting the main switch 3 and the primary feed switch 90 to the other end of the fixture 64.
An insertion hole 69 through which the fixing screw 112 is inserted is formed for fixing the fixing screw 112 using the fixing screw 112. Here, the terminal block 110 is provided with mounting pieces 1 each having insertion holes 111a, 111a through which the fixing screws 112 are inserted.
11, 111 'are protruded, and the main switch 3
, And a pair of connection terminals that are electrically connected to the primary feed switch 90 are provided. This one connection terminal has a screw connection portion 107 formed with a screw hole (not shown) into which a terminal screw 106 for connecting the feed line 105 is screwed.
And insertion blades 10 to be inserted into insertion ports 91 and 92 opened on the other end side of the body of the primary feed switch 90, respectively.
1, 102 are formed continuously and integrally. The other connection terminal has a screw connection portion 109 formed with a screw hole (not shown) into which a terminal screw 106 connecting the feed line 104 is screwed.
And an insertion blade 103 inserted into an insertion opening 103 opened at the other end of the body of the primary feed switch 90 are formed continuously and integrally. In short, the height position of the upper insertion port 91 in FIG.
10 is arranged on the fixture 64, it corresponds to the height position of the uppermost insertion blade 101, the middle insertion hole 92 corresponds to the height position of the insertion blade 102, and Outlet 93
Corresponds to the height position of the insertion blade 103.

In this embodiment, a receiving blade (not shown) is disposed in one of the upper and middle insertion ports 91 and 92, and the other is a storage section in which the receiving blade is not disposed. A receiving blade (not shown) is provided in the lower insertion hole 93.
Is arranged.

In arranging and fixing the primary feed switch 90 to the fixture 64, the pair of positioning pieces 65 of the fixture 64 of the primary feed switch 90 constitute the body of the primary feed switch 90. With the hooking claws 68 of the fixture 64 hooked into the hooking holes 94 formed at the lower portion of one end face of the connector, the both sides of the body are brought into contact with the positioning pieces 65, respectively. After inserting the blades 101, 102, 103 into the corresponding insertion ports 91, 92, 93, the terminal block 110 is fixed to the fixture 64 with the fixing screw 112, so that the primary feed switch 90 and the terminal block 110 are fixed. Is fixed to the fixture 64.

A rectangular (rectangular) electric wire insertion hole 70 is formed in the center of the bottom plate 10a of the body 10. Support bases 75, 75, which are two mounting parts on the left and right sides, are provided on the bottom plate 10a so as to protrude forward.
A section L is provided around each support base 75 located on the upper side.
Guide walls 74 are formed so as to form the corners of the rectangular region, and are formed around the support bases 75 located on the lower side. Are formed to form a guide wall 73.
The retaining boss 6 adjacent to the upper support 75 below and having a projecting dimension slightly larger than that of the support 75 from the bottom plate 10a.
2 are formed. A lower half receiving piece 7 is provided on the front end side of the guide wall 73 provided around the lower support base 75.
3a is formed continuously and integrally. Here, the bottom plate 10a
From the bottom plate 10a to the support 7
5 is set to be slightly larger than the distance to the tip end surface.

The electric wire insertion hole 70 in the bottom plate 10a
A rib 71 protruding forward is formed on the entire periphery of the wire, and the rib 71 reinforces the periphery of the electric wire insertion hole 70.

The above-mentioned inner unit block B is attached to the left and right support bases 75 formed on the body 10. here,
One end of each of the bases 4 and 4 of the inner unit block B is placed on each of the support bases 75 and 75 on the right side in FIG. 1, and the body is mounted using mounting screws 12 screwed into the support bases 75 and 75. Fixed to 10. Here, at one end of each of the bases 4, 4, a part of the upper edge of a large-diameter portion having a round hole larger than the diameter of the head of the mounting screw 12 has a width smaller than the diameter of the mounting screw 12. A mounting hole 9 is formed in a keyhole shape with a continuous groove. Therefore, with the mounting screw 12 loosely screwed into the support base 75, the large-diameter portion of the mounting hole 9 is passed through the head of the mounting screw 12, and the head of the mounting screw 12 is slid to a position corresponding to the groove. The base 4 is fixed to the body 10 by tightening the mounting screw 12 later. Further, since the guide walls 74 and 73 are formed around the support bases 75 and 75 as described above, positioning is easy by matching the mounting position of the mounting member of the inner unit block B with the guide walls 74 and 73. In addition, since the receiving piece 73a is formed on the lower guide wall 73, when the mounting screw 12 is inserted into the groove of the mounting hole 9, the retaining boss is formed on the large diameter portion of the mounting hole 9. The position of the retaining boss 62 is set so that the boss 62 is inserted.

In the main switchgear fixed base 8, mounting pieces 40 'protruding from one end face are placed on the left supports 75, 75 in FIG. Is fixed to the body 10 using a mounting screw 61 ′ which is screwed into the body 10. Here, each of the mounting pieces 40 ′, 40 ′ has a part of the upper edge of a large-diameter portion having a round hole larger than the diameter of the head of the mounting screw 61 ′, and is narrower than the diameter of the mounting screw 61 ′. Mounting holes 50 ′, 5, each of which has a groove formed in a continuous keyhole shape.
0 'is formed. Therefore, with the mounting screw 61 ′ loosely screwed into the support base 75, the large diameter portion of the mounting hole 50 ′ is passed through the head of the mounting screw 61 ′, and the head of the mounting screw 61 ′ corresponds to the groove. The main switchgear fixing base 8 is fixed to the body 10 by tightening the mounting screw 61 ′ after the sliding operation. Further, since the guide walls 74 and 73 are formed around the support bases 75 and 75 as described above, positioning is easy by matching the mounting position of the mounting member of the inner unit block B with the guide walls 74 and 73. Further, since the receiving piece 73a is formed on the lower guide wall 73, when the mounting screw 61 'is inserted into the groove of the mounting hole 50', the receiving piece 73a is formed in the large diameter portion of the mounting hole 50 '. The position of the retaining boss 62 is set so that the retaining boss 62 is inserted.

In the above-described residential power distribution board of the present embodiment, the electric wire insertion hole 70 is formed so that the inner peripheral edge of the electric wire insertion hole 70 and the branch switch 2 are connected to each other with the inner unit block B attached to the body 10. An opening through which an electric wire conductor can be inserted is formed between the terminal and the output terminal, and the width in the juxtaposition direction is longer than the distance between the end faces of the branch switches 2 located on both sides in the juxtaposition direction. Therefore, the work of inserting the wire conductor into the body 10 through the wire insertion hole 70 is facilitated, the work of reconnecting the wire conductor to the branch switch 2 is facilitated, and the heat radiation effect is reduced. Can be improved. Moreover, since the bottom plate 10a is provided with the ribs 71 protruding forward from the periphery of the wire insertion hole 70, it is possible to prevent the covering of the wire conductor from being broken when the wire conductor comes into contact with the periphery of the wire insertion hole 70. In addition, since the peripheral edge of the electric wire insertion hole 70 is thicker than other portions, the rigidity of the electric wire insertion hole 70 can be increased. In addition, 76 in FIG. 6 indicates an electric wire conductor connected to the output terminal of the branch switch 2.

Further, a mounting portion for mounting one end of the mounting member in a direction parallel to the parallel mounting direction is provided on the bottom plate 10a so that the inner unit block B is located on the front side of the bottom plate 10a. Provided at both ends in a direction parallel to the mounting direction, when the length between both ends of the mounting member in the direction parallel to the juxtaposed direction is the same as the length between the mounting portions provided on the bottom plate 10a, the mounting member When both ends of the wire are attached to the mounting portions, the inner unit block B projects forward from the bottom plate 10a, so that the wire conductor is inserted into the body 10 through the wire insertion hole 70 in advance. The inner unit block B can be attached to the bottom plate 10a irrespective of the conductor insertion position, and the work of attaching the inner unit block B becomes easy. The electric wire insertion hole 70 is formed in a square shape. So the building When marking the shape corresponding to the electric wire insertion hole on the wall surface, it becomes easy to align the periphery of the electric wire insertion hole with the core of the cutter or pencil, and when the size of the bottom plate 10a is fixed, it is formed in a circular shape. The area of the electric wire insertion hole 70 can be made larger than that in the case where the heat dissipation is performed, and the heat radiation effect can be enhanced.

In this embodiment, the rib 7
In one of the upper and lower parallel portions, a plurality of screw insertion holes 72 are provided.
Are formed at a pitch corresponding to the width dimension of the branch switch 2, so that the bridge member can be bridged across the wire insertion hole 70 by using a pair of screw insertion holes 72 in the vertical direction of the bottom plate 10a. However, the rear surface of the bottom plate 10a surrounds the electric wire insertion hole
A concave portion 10c having an open side is formed, and the concave portion 10c is formed up to a position exceeding the position of the screw insertion hole 72 in the vertical direction.
The rear cover 80 having substantially the same thickness as the step of the concave portion 10c can be attached to the concave portion 10c on the rear surface of the bottom plate 10a using a screw that is screwed into the screw insertion hole 72. Here, since the screw insertion holes 72 are formed at a pitch corresponding to the width dimension of the branch switch 2 in the left-right direction of the bottom plate 10a as described above, the width of the left-right direction of the rear cover 80 that can be attached is free. High degree.

(Embodiment 2) The basic configuration of a residential distribution board of this embodiment is substantially the same as that of Embodiment 1, and as shown in FIGS. 13 to 15, a wooden board 12 on which a current limiter is provided.
The difference is that the wooden board mounting base 88 to which the “0” is mounted is disposed on the left side of the main switch 3 in FIG. Note that the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

In the present embodiment, a casing having the same size as that of the first embodiment is used, and the branch switches 2 are arranged in upper and lower rows as shown in FIG. 14, and six switches are arranged in each row. Has been established. For this reason, in this embodiment, the length of each of the bases 4 and 4 is shorter than that of the first embodiment, and only one conductive bar mounting base 6 and one mounting base 7 are used. Uses only two.

In the present embodiment, one end (the right side in FIG. 14) of the mounting member of the inner unit block B described in the first embodiment is mounted on the support bases 75, 75 of the body 10 in the same manner as in the first embodiment. The other end is fixed to a mount 77 serving as a bridge member which is bridged in the vertical direction on the front side of the bottom plate 10a so as to straddle the wire insertion hole 70. The mounting base 77 is fixed by fastening the fixing screw 100 to the screw insertion hole 72 of the bottom plate 10a via the mounting hole 98a provided in each of the mounting pieces 98 projecting from the upper end and the lower end. On the other hand, the other end of the mounting member has a fixing screw 61 ′ inserted into the groove of the mounting hole 50 ′ formed in the fixing piece 40 ′, and the fixing screw 61 is inserted into an insertion hole 97 formed on the front surface of the mounting base 40. Is attached to the mounting base 77 by fastening the '. A boss 99 that fits into the large-diameter portion of the mounting hole 50 'is protrudingly provided at a position below the insertion hole 97 positioned above the mounting table 40. 14, two hook holes 96 into which hook projections 95 protruding from the right side surface of the wooden board mounting table 88 are inserted are formed on the left side surface in FIG. In order to attach the wooden board mounting base 88 to the mounting base 40, the hooking projection 95 is inserted from the wide portion 96a of the hooking hole 96, and the wooden board mounting base 88 is moved downward in FIG.
6 may be hooked and locked by overlapping the opening periphery of the width detail 96b. Further, as shown in FIG.
A mounting piece 88a formed with a mounting groove 88b for mounting the wooden board mounting base 88 to the bottom plate 10a by using a fixing screw 89 is integrally formed from the left side surface of the mounting piece 88. Therefore, one end of the wooden board mounting base 88 can be attached to the body 10 by screwing the fixing screw 89 into the support base 63 projecting forward from the bottom plate 10a via the mounting groove 88b.

In short, in this embodiment, the inner unit block B is fixed by attaching one end of the attachment member in the left-right direction to the attachment portion, and attaching the other end of the attachment member to the attachment base 77. By attaching the mounting base 77 in accordance with the length of the mounting member in the left-right direction, the body 10 can be shared even with the internal unit blocks B having different lengths of the mounting member in the left-right direction, and low cost. And parts management becomes easier. In addition, since the screw mounting holes 72 are juxtaposed in the left-right direction at intervals corresponding to the width dimension of the branch switch 2 in the juxtaposition direction of the branch switch 2, the lengths of the mounting members in the left-right direction are juxtaposed. The number of the branch switches 2 can be made in accordance with the number of the branch switches 2 to be formed, and the work of manufacturing the mounting member becomes easy.

[0053]

According to the first aspect of the present invention, there is provided an inner unit block in which a plurality of branch switches are juxtaposed on a mounting member such that output terminals are arranged in the juxtaposition direction of the branch switches. A body in which one wire insertion hole is formed in the bottom plate, wherein the wire insertion hole has an inner peripheral edge of the wire insertion hole and an output terminal of each branch switch in a state where an inner unit block is attached to the bottom plate. An opening through which an electric wire can be inserted is formed, and is formed in such a size that the width in the juxtaposition direction is longer than the distance between the end faces of the branch switches located on both sides in the juxtaposition direction. This has the effect of facilitating the work of inserting the wire conductor into the body through the wire insertion hole, facilitating the work of reconnecting the wire conductor to the branch switch, and improving the heat dissipation effect. With There is an effect that that.

According to a second aspect of the present invention, in the first aspect of the present invention, since the bottom plate has a rib protruding forward from a periphery of the electric wire insertion hole, the electric wire conductor is in contact with the periphery of the electric wire insertion hole. In this case, there is an effect that the covering of the wire conductor can be prevented from being broken, and since the peripheral edge of the wire insertion hole is thicker than other portions of the bottom plate, a relatively large wire insertion hole is formed. However, there is an effect that the rigidity of the bottom plate can be maintained.

The third aspect of the present invention is the first or second aspect.
In the invention, the mounting portion for mounting one end side of the mounting member in a direction parallel to the juxtaposition direction so that the inner unit block is located on the front side with respect to the bottom plate, in the juxtaposition direction in the bottom plate Since it is provided at both ends in the parallel direction, if the length between both ends of the mounting member in the direction parallel to the juxtaposition direction is the same as the length between the mounting portions provided on the bottom plate, both ends of the mounting member If you attach each to the mounting part,
Since the inner unit block is in a state protruding to the front side from the bottom plate, the inner unit block can be attached to the bottom plate regardless of the insertion position of the wire conductor in a state where the wire conductor is passed through the wire insertion hole in advance, There is an effect that the work of attaching the inner unit block becomes easy.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the other end of the mounting member is attached, and the bridge member is bridged vertically across the wire insertion hole on the front side of the bottom plate. Since a plurality of screw insertion holes for mounting the bridge member with screws on the upper and lower sides of the electric wire insertion hole are arranged side by side in the left and right direction of the bottom plate, one end of the mounting member in the left and right direction is used as the mounting portion. Attaching and fixing the inner unit block by attaching the other end of the mounting member to the bridge member, and attaching the bridge member in accordance with the length of the mounting member in the left-right direction allows the mounting member to be mounted in the left-right direction. Even if the internal unit blocks have different lengths, the body can be shared, which has the effect of reducing costs and facilitating component management.

According to a fifth aspect of the present invention, in the fourth aspect of the present invention, the screw insertion holes are juxtaposed in the left-right direction at intervals corresponding to the width of the branch switch in the juxtaposition direction. The length of the member in the left-right direction can be manufactured in accordance with the number of branch switches arranged side by side, and there is an effect that the operation of manufacturing the mounting member becomes easy.

The invention of claim 6 is the invention of claim 4 or claim 5.
In the invention, a concave portion is formed on the rear surface of the bottom plate so as to surround the electric wire insertion hole over the entire circumference and the electric wire insertion hole side is opened, and the concave portion is formed up to a position exceeding the position of the screw insertion hole in the vertical direction. So
The rear cover having substantially the same thickness as the step of the concave portion can be attached to the concave portion on the rear surface of the bottom plate by using a screw that is screwed into the screw insertion hole, and the width of the rear cover that can be attached in the left-right direction can be attached. The effect is that the degree of freedom is high.

The invention of claim 7 is the invention of claims 1 to 6
In the invention of the present invention, since the electric wire insertion hole is formed in a square shape, a core of a cutter or a pencil is aligned with a peripheral edge of the electric wire insertion hole when marking a shape corresponding to the electric wire insertion hole on a wall of a building. This has the effect of making it easier to perform.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a first embodiment.

FIG. 2 is a partially broken front view showing a state where the outer door is opened.

FIG. 3 is a perspective view of the same as viewed from the rear.

FIG. 4 is a front view showing a state in which the cover is removed.

FIG. 5 is a side sectional view of the same.

FIG. 6 is a side sectional view of the same.

FIG. 7 is an enlarged sectional view of a main part of the above.

FIG. 8 is an exploded perspective view of a main part of the above.

FIG. 9 is an exploded perspective view of a main part of the above.

FIG. 10 is an exploded perspective view of a main part of the above.

FIG. 11 is an exploded perspective view of a main part of the above.

FIG. 12 is a perspective view showing a state where a back cover is attached to the back side of the above.

FIG. 13 is an exploded perspective view showing the second embodiment.

FIG. 14 is a front view showing a state where the cover is removed.

FIG. 15 is an exploded perspective view of a main part of the above.

FIG. 16 is a front view of a main part showing a conventional example.

[Explanation of symbols]

 2 branch switch 3 main switch 10 body 10a bottom plate 10b peripheral wall 11 cover 70 wire insertion hole 90 primary feed switch B inner unit block

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masahiro Kubo 55, Haruki-La part, Toriyacho, Kashima-gun, Ishikawa Pref.Hita Electric Appliance Co., Ltd. Address Hita Denki Co., Ltd.

Claims (7)

[Claims] 1. An inner unit block in which a plurality of branch switches are juxtaposed on a mounting member such that output terminals are arranged in a direction in which the branch switches are juxtaposed, and an inner unit block is attached and one electric wire insertion hole is formed in a bottom plate. Formed with a body, wherein the electric wire insertion hole allows an electric wire to be inserted between the inner peripheral edge of the electric wire insertion hole and the output terminal of each branch switch in a state where the inner unit block is attached to the bottom plate. Characterized in that the opening is formed in such a size that the width in the juxtaposition direction is longer than the distance between the end faces of the branch switches located on both sides in the juxtaposition direction. Switchboard. 2. The distribution board for housing according to claim 1, further comprising a rib protruding forward from a periphery of the electric wire insertion hole in the bottom plate. 3. A mounting portion for mounting one end of the mounting member in a direction parallel to the juxtaposition direction so that the inner unit block is located on the front side of the bottom plate in the juxtaposition direction on the bottom plate. 3. The distribution board for a house according to claim 1, wherein the distribution board is provided at both ends in a direction parallel to the direction. 4. A bridging member to which the other end of the mounting member is attached and which is bridged across the wire insertion hole in a vertical direction on the front side of the bottom plate, and a bridge is provided at each of the upper and lower sides of the wire insertion hole. The distribution board for a house according to claim 3, wherein a plurality of screw insertion holes for attaching members with screws are arranged side by side in the left-right direction of the bottom plate. 5. The distribution board according to claim 4, wherein the screw insertion holes are arranged side by side in a lateral direction at an interval corresponding to a width dimension of the branch switch in the juxtaposition direction. . 6. A concave portion is formed on the rear surface of the bottom plate so as to surround the electric wire insertion hole over the entire circumference and the electric wire insertion hole side is opened, and the concave portion is formed up to a position exceeding the position of the screw insertion hole in the vertical direction. The residential distribution board according to claim 4 or 5, wherein the distribution board is provided. 7. The distribution board for houses according to claim 1, wherein the electric wire insertion hole is formed in a square shape.