JP2003224906A - Distribution board - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a distribution board capable of improving appearance and safety at points missing a branch switch, and also capable of improving the overall assemblability. <P>SOLUTION: A distribution board 1 comprises a master switch 3, a plurality of branch switches 4 connected together lengthwise on both sides of a master bar 9, a box 2 comprising an opening on one surface, where the open/close operation surfaces 3a and 4a are housed as an opening side, and an intermediate lid 6 comprising a first window hole 6a opposed to the open/close operation surface of the master switch and a second window hole 6b which the open/close operation surfaces of the branch switches face, where a part of the second window hole corresponding to where no branch switch 4 is allocated is stopped with a window hole stopping member 5. The window hole stopping member 5 comprises a protruding part 12, which having similar shape and size to the open/close operation surface 4a of the branch switch 4, faces from inside of the box 2, a part of the second window hole 6b, a fixing member 16 attachable to a fixing member which fixes the branch switch 4 with the protruding part 12 made to face a part of the second window hole 6b, and a cover piece 14 which covers with an opening side, almost half of the width of the master bar in the minor direction. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention accommodates a main switch and a plurality of branch switches so that the opening / closing operation surfaces of the main and branch switches are exposed to the respective window holes of the inner lid. Regarding the electric panel, in detail, the main switch and the branch switch have their opening / closing operation surfaces facing the respective window holes of the inner lid, and the branch switch of each branch switch removed from the branch bar is not arranged. The present invention relates to a distribution board in which a part of a window hole at a position is closed by a window hole closing member.

[0002]

2. Description of the Related Art Generally, in a distribution board, a main box switch and a plurality of branch switches are housed inside a box, and the branch switches are electrically connected to each other via a main bar. Is
An inner lid is attached to the opening surface of the box. The inner lid is formed with a first window hole that faces the opening / closing operation surface of the main switch and a second window hole that collectively faces the opening / closing operation surface of the branch switch, which is the maximum number of storages in the box. The main switch and each branch switch can be opened and closed without opening the inner lid.

By the way, the number of branch switches varies depending on the number of circuits at each demand place, and when the maximum number of branch switches to be accommodated in the box is to be accommodated, the switching operation surface of each branch switch is the second. The second window hole is closed by facing the second window hole. However, if the number of branch switches is less than the maximum number that can be accommodated, a part of the second window hole corresponding to the non-arranged part of the branch switches will not be closed, resulting in poor appearance. Therefore, when the number of branch switches is small, a window hole closing member as shown in FIG. 8 is formed so that the projection of the window hole closing member faces the second window hole (for example, see Japanese Patent Laid-Open No. 10-75509). 1
It is covered with 00.

This window hole closing member 100 has substantially the same shape as the branch switch, and has a projection 101 facing a part of the second window opening facing the opening / closing operation surface of the branch switch, and the branch switch. With the legs 102, 102 that can be detachably fixed between the hooking claw and the elastic hooking piece of the fixing bracket for fixing the branch bar and the branch bar as it is connected to the main bar when the branch switch is removed. And an isolating unit 103 for isolating adjacent branch bars (that is, isolating two branch bars when the adjacent branch switches are removed).

The leg portions (fixed portions) 102 and 102 are the protrusions 1.
The first recess 102a is formed so as to hang down from the end of the longitudinal direction surface of 01, and further protrudes outward from each other. Two
It has a recess 102b.

Usually, when performing maintenance, the inner lid is removed from the box, but at the time of this maintenance,
Although the cover of the plug-in connection portion of each branch switch covers the surface of the charging portion of the main bar, the surface of the charging portion of the main bar is exposed in the portion where the window hole cooling member is provided.
Therefore, as shown in FIG. 9, for example, when three layers are stacked, the insulating cap 105 may be attached to the uppermost main bar 104 closest to the opening of the box body.

In some cases, the modules of the main switch and the branch switch are unified, and the first window hole and the second window hole are continuously connected to form one window hole. Is almost the same as the case where two window holes are formed.

[0008]

In the distribution board as described above, a large force is required for the attaching operation when attaching the window hole closing member to the fixing metal fitting for attaching each branch switch. there were. Further, in the case of the distribution board using the two parts of the window hole closing member and the insulating cap at the position where the branch switch is missing, the cost becomes higher and the assembling is troublesome. Further, since the insulating cap is attached to the main bar, heat dissipation is deteriorated, and it is hard to say that it is preferable in terms of tracking resistance through the surface of the insulating cap.
In addition, between the window hole closing member attached to the fixing bracket for attaching each branch switch and the insulating cap attached to the main bar,
It could not be said that there was no risk of electric shock by touching the trunk bar of the other pole below the top trunk bar at the top, in which case there was a gap in which the fingers of the hand might get in. The present invention is
The present invention has been made in view of the above circumstances, and an object thereof is to provide a distribution board that can improve the appearance and safety of a missing part of a branch switch and improve the overall assemblability.

[0009]

In order to achieve the above object, in the distribution board of the invention according to claim 1, a main switch and a main bar electrically connected to the main switch are provided. Multiple branch switches are installed side by side in the longitudinal direction on both sides of the, and the plug-in connection part of each branch switch is plugged in to the main bar, and each branch switch is attached via the fixing member. A box body having an opening on one side that accommodates the opening / closing operation surfaces of the master switch and each branch switch, the first window hole facing the opening / closing operation surface of the master switch, and the opening / closing operation surface of each branch switch And a middle lid having a second window hole which collectively faces the distribution switchboard, in which a part of the second window hole corresponding to the non-arranged position of the branch switch is closed by the window hole closing member. In the above, the window hole closing member has substantially the same shape and size as the opening / closing operation surface of the branch switch. A projecting part facing a part of the window hole from the inside of the box body, and a fixing part attachable to a fixing member for fixing the branch switch with the projecting part facing a part of the second window hole, It has a cover piece that covers approximately half of the width in the short direction of the main bar on the opening side, and is fixed to the box body in a state of being attached to each branch switch.

As a result, the window hole closing member itself has a cover piece that covers approximately half of the width in the short direction of the main bar on the opening side, so that a separate insulating cap is attached to the main bar as in the prior art. There is no need to do so, just by attaching the window hole closing member to the fixing member, even if the inner lid is removed, the surface of the main bar of the charging part is covered with a covering piece from the opening side of the box, Can be prevented from being exposed to the opening side of the box, and electric shock can be prevented.

In the distribution board of the invention according to claim 2,
A rib projecting portion is provided on a bottom surface of the window hole closing member, and a fitting portion into which the rib projecting portion is fitted is provided on the fixing member.

With this configuration, the rib extending portion on the bottom surface of the window hole closing member and the fitting portion of the fixing member can be used for positioning when the window hole closing member is attached to the fixing member, and the window hole closing member is combined. It is possible to form an inexpensive metal mold for molding with a resin without a side core of a split mold only in the lateral direction of the window closing member. Moreover, it is possible to prevent the displacement of the window closing member in the longitudinal direction of the main bar.

In the distribution board of the invention according to claim 3,
When the fixing portion of the window hole closing member is attached to the fixing member, the main body portion of the window hole closing member and the cover piece of the window hole closing member are separated from the main bar with a space. It is characterized by that.

As a result, since the window hole closing member does not come into contact with the main bar that is the charging section, it is less susceptible to the heat generated by the main bar and has excellent tracking resistance, and the window hole closing member is attached to the fixing member. It is possible to avoid the tip of the cover piece from interfering with the main bar when wearing.

In the distribution board of the invention according to claim 4,
The fixing member includes an engaging portion located on the side of the main bar and a leaf spring with a locking portion located on a side distant from the main bar, and the window hole closing member is the main bar of the window hole closing member. The attachment operating portion that extends almost directly above the locking portion of the leaf spring with the locking portion as an extension of the inner lid abutting step portion that is slightly lower than the opening / closing operation surface of each branch switch on the side farther from It is characterized by having.

As a result, since the attachment operation portion of the window hole closing member has reached a position almost directly above the engaging portion of the leaf spring with the engaging portion, the attachment of the window hole closing member to the fixing member is performed. The operation force is small, the window hole closing member is easy to attach, and the assembling property is excellent.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to FIGS. 1 is a front view of the distribution board, FIG. 2 is a front view showing a state in which the inner lid is removed, and FIG. 3 is a state in which the branch switch and the window hole closing member are arranged in parallel and attached to a fixing member. FIG. 4 is a perspective view of the window hole closing member as seen obliquely from above, FIG. 5 is a perspective view of the window hole closing member as seen from an oblique bottom surface side, and FIG. 6 is a mounting member for attaching the window hole closing member. FIG. 7 is a partial cross-sectional view showing a mounting state of the window hole closing member.

As shown in FIG. 1, the distribution board 1 includes a box body 2 having an opening on one side, a main switch 3 and a branch switch 4.
Etc., the window hole closing member 5 arranged in the non-arrangement part of the branch switch 4, and the opening / closing operation surfaces 3a, 4a of the electric device.
It is composed of an inner lid 6 that closes the opening of the box body 2 in a state where the inside is exposed (visible from the outside), and a door (outer lid) 7 rotatably attached to the outside of the inner lid 6. Has been done. A demand place display tag 19 is provided near the exposed portion of each branch switch 4.

The box body 2 is formed by bending an iron plate into a shape having an opening on one side, and inside the box body 2, as shown in FIG. A main bar 9 connected to the main board, a first board (fixing member) 10 on which the main switch 3 and the branch switch 4 are mounted, and a second board.
Substrate (fixing member) 11 is stored.

The main switch 3 and the branch switch 4 are provided with opening / closing operation surfaces 3a and 4 with protruding handles 3b and 4b, respectively.
It is housed in the box body 2 so that a is on the opening side. In FIG. 2, the main switch 3 is arranged on the upper part of the box body 2 so that the input / output terminals are in the vertical direction of the box body 2 and is attached to the fixing member 10 so that the opening / closing operation surface 3 a of the main cover 6 is the first one. 1 window hole 6a
Facing.

A plurality of branch switches 4 are arranged in parallel on both sides of the main bar 9 and on the lower side of the box body 2 in a direction orthogonal to the longitudinal direction of the main bar 9. Then, the opening / closing operation surface 4a from which the handle 4b is projected is attached to the fixing member 11 so that the opening side is located, and the opening / closing operation surface 4a faces the second window hole 6b of the inner lid 6. The plug-in connection portion of the branch switch 4 is plug-in connected to the master bar 9 and is electrically connected to the master switch 3 via the master bar 9.
The main bar 9 is supported at its end by a main bar strut 20, the feed bar 8 is covered with an insulating sheet 21, and the branch switch 4 of the main bar 9 on the side opposite to the feed bar 8 side is not connected. The part is covered with the window hole closing member 5.

The window hole closing member 5 is formed of an insulating material such as synthetic resin, and has a shape and size substantially the same as the opening / closing operation surface 4a of the branch switch 4, as shown in FIGS. A protrusion 12 facing the inside of the box body 2 is formed in the main body portion 5a in a part of the second window hole 6b of the lid 6. Also, this protrusion 12
The inner lid abutting step portion 13 is formed in the longitudinal direction of the main body portion 5a on the surface side where the is formed, and the covering piece 14 is projected from the main body portion 5a in the longitudinal direction following the inner lid abutting step portion 13. Is forming. Furthermore, an attachment operation portion 15 is formed at a corner of the main body portion 5a on the side opposite to the side where the cover piece 14 protrudes with the protrusion 12 interposed therebetween. Between the hook claw (engaging portion) 11a of the fixing member 11 for fixing the branch switch 4 and the leaf spring 11b with the engaging portion in a state where the protrusion 12 faces a part of the second window hole 6b. Fixing portions 16, 16 are projected in the longitudinal direction at the bottom of the branch switch 4 so that they can be detachably fixed.

Further, at the end portion of the bottom surface of the window hole closing member 5 in the longitudinal direction, the first rib extending portion 17a and the second rib extending portion 17 are formed.
By forming b, the window hole closing member 5 can be positioned when it is attached to the fixing member 11, and the positional deviation of the window hole closing member 5 is prevented even in the longitudinal direction of the main bar 9. Since the window hole closing member 5 of the present embodiment does not have the bag-shaped concave portion formed therein, the mold can be a split mold only in the short side direction of the window hole closing member without a side core. It can be an inexpensive mold.

The projecting portion 12 of the window hole closing member 5 is formed to have substantially the same shape as the opening / closing operation surface 4a of the branch switch 4, and when the inner lid 6 is closed as shown in FIG. It is visible from the outside of the box body 2 through the two window holes 4a, and is designed to close the gap (a part) of the second window hole 4a generated when the branch switch 4 is removed.

The inner lid abutting step portion 13 of the window hole closing member 5 is formed with a step lower than this in the longitudinal direction following the protrusion 12, and when the protrusion 12 faces the window hole 4a, It is arranged to be located on the back surface of the lid 6.

The cover piece 14 is an extension of the inner lid contact step 13 slightly lower than the opening / closing operation surface 4a of each branch switch 4 on the side of the main bar 9 of the window hole closing member 5, and is a main body 5a. Is formed so as to project like an eaves from the upper side of the main bar 9 (opening side)
It covers almost half of the width in the lateral direction.

The attachment operation section 15 is provided on the side of the window hole closing member 5 remote from the main bar 9 and the opening / closing operation surface 4 of the branch switch 4.
It is formed as an extension of the inner lid contact step 13 slightly lower than a. When the window hole closing member 5 is attached to the second fixing member 11, the attaching operation portion 15 is made to reach substantially directly above the engaging portion 11c of the leaf spring 11b with the engaging portion of the fixing member 11. ing.

As shown in FIGS. 6 and 7, the receiving portion for attaching the window hole closing member 5 of the second fixing member 11 includes the engaging portion 11a located on the side of the main bar 9 and the main bar 9. And a leaf spring 11b with a locking portion located on the distant side. The leaf spring 11b with the engaging portion has an engaging portion 11
c is formed, the fixing portion 16 of the window hole closing member 5 is engaged with the engaging portion 1
When it is fitted between 1a and the leaf spring 11b with the engaging portion against the biasing force of the spring of the leaf spring 11b with the engaging portion, the window hole closing member 5 is firmly attached so that it cannot be easily removed. Has been done. Further, on the engagement portion 11a side of the fixing member 11, a first rib fitting portion 18a is provided in a size larger in the longitudinal direction at a portion corresponding to the first rib protruding portion 17a on the bottom surface of the window hole closing member 5. Further, a second rib fitting portion 18b is provided at a portion corresponding to the second rib projecting portion 17b on the side of the leaf spring 11b with the locking portion.

As a result, the rib extending portions 17a and 17b on the bottom surface of the window closing member 5 and the fitting portion 18 of the fixing member 11 are formed.
a and 18b can be used for positioning when attaching the window hole closing member 5 to the fixing member 11.

The inner lid 6 is formed by bending a single iron plate like the box 2, and as shown in FIG. 1, the opening / closing operation surfaces 3a, 4a of the main switch 3 and the branch switch 4 are externally connected. Each of the opening and closing operation surfaces 3 has first and second window holes 6a and 6b exposed to the outside.
The opening of the box body 2 can be closed with a and 4a exposed to the outside. Therefore, the handles 3b, 4b of the main switch 3 and the branch switch 4 can be opened and closed without opening the inner lid 6. First window 6
The size a is formed so as to face the opening / closing operation surface 3a of the main switch 3, and when there are two or more main switches 3, a is formed for each main switch. As shown in FIG. 1, the second window holes 6b collectively face the opening / closing operation surface 4a of the branch switch 4 on the left side of the main bar 9 and the opening / closing operation surface 4a of the branch switch 4 on the right side of the main bar 9. Are formed so as to face together.

The outer lid 7 is formed by bending one iron plate similarly to the box body 2 and the inner lid 6, and is rotatably supported on one side of the box body 2 as shown in FIG. And the other side of the box body 2 is locked in a closed state.

In the present embodiment, a plurality of branch switches are juxtaposed on both sides of the main bar, but a plurality of branch switches may be juxtaposed only on one side of the main bar. In this case, there is only one second window hole. Further, the branch switch is not limited to a two-pole type switch that is electrically connected only to the main bar on the power supply side, and may be a one-pole type switch provided in parallel. Further, in the present embodiment, two second window holes are formed, but when a plurality of branch switch blocks arranged in parallel are separated by a predetermined distance, two or more may be provided. Furthermore, the modules of the main switch and the branch switch may be unified to make the first window hole and the second window hole continuous to form one window hole. In this case, a part of one window hole Corresponds to the first window hole, and the rest corresponds to the second window hole.

[0033]

In the distribution board according to the first aspect of the present invention, since the window hole closing member itself has the covering piece that covers approximately half of the width in the widthwise direction of the main bar on the opening side, There is no need to attach a separate insulating cap to the main bar, just attach the window closing member to the fixing member, assembly can be done easily and reliably, and cost can be reduced.
Even if the inner lid is removed, the main bar surface of the charging part is covered with a cover piece from the opening side of the box, and the charging part is not exposed to the opening side of the box to prevent electric shock. Therefore, it is possible to improve the appearance and safety of the missing part of the branch switch, and to improve the overall assemblability.

In the distribution board according to claim 2, in addition to the effect according to claim 1, the rib closing portion of the bottom surface of the window hole closing member and the fitting portion of the fixing member fix the window hole closing member. It can be used for positioning when attaching to a member, and the mold for molding the window closing member with a synthetic resin is an inexpensive mold without a side core that is a split mold only in the lateral direction of the window closing member. be able to. Moreover, it is possible to prevent the positional deviation of the window hole closing member in the longitudinal direction of the main bar.

In the distribution board according to the third aspect, in addition to the effect according to the first or second aspect, the window hole closing member does not come into contact with the main bar serving as the charging portion, so that the influence of the heat generation of the main bar is exerted. In addition, it is difficult to receive, and has excellent tracking resistance, and it is possible to avoid interference such that the tip of the cover piece comes into contact with the main bar when the window hole closing member is attached to the fixing member.

In the distribution board according to the fourth aspect, since the attachment operation portion of the window hole closing member reaches the position almost directly above the locking portion of the leaf spring with the locking portion, In addition to the effects described in any one of Items 1 to 3, the operation force for attaching the window hole closing member to the fixing member may be small, the window hole closing member can be easily attached, and the assembling property is excellent.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a distribution board of the present invention.

FIG. 2 is a front view showing a state in which an inner lid is removed.

FIG. 3 is a perspective view showing a state in which the branch switch and the window hole closing member are arranged in parallel and attached to a fixed portion.

FIG. 4 is a perspective view showing the window hole closing member as viewed obliquely from above.

FIG. 5 is a perspective view showing the window hole closing member as seen from the diagonal bottom surface side.

6A and 6B are views for explaining a mounting member for attaching a window hole closing member, wherein FIG. 6A is a plan view of a mounting portion of a fixing member, and FIG. 6B is AA of FIG. It is sectional drawing which follows the line.

FIG. 7 is a cross-sectional view showing a mounting state of a window hole closing member.

FIG. 8 is a perspective view showing a window hole closing member of a distribution board of a conventional example.

9A and 9B are views showing a state in which a main bar of a distribution board of a conventional example is insulated with an insulating cap. FIG. 9A is a plan view and FIG. 9B is a line AA in FIG. 9A. FIG.

[Explanation of symbols]

1 distribution board 2 boxes 3 Main switch 4 branch switches 5 Window hole closing member 6 Inner lid 6a First window hole 6b Second window hole 7 outer lid 8 feed bar 9 Master bar 10 First substrate (fixing member) 11 Second substrate (fixing member) 11a Claw (engagement part) 11b Leaf spring with locking part 11c Locking part 12 Projection 13 Inner lid contact step 14 Cover piece 15 Attachment operation part 16 Fixed part 17a First rib extending portion 17b Second rib extension part 18a First fitting portion 18b Second fitting portion

Claims (4)

[Claims] 1. A plurality of branch switches are provided in the longitudinal direction on both sides of a main switch and a main bar electrically connected to the main switch, and a plug-in connection portion of each branch switch is provided as a main bar. A box body having an opening on one side that accommodates the main switch and the opening / closing operation surface of each branch switch as the opening side in a state in which each branch switch is attached via a fixing member. A first window hole facing the opening / closing operation surface of the switch and a second opening facing the opening / closing operation surface of each branch switch
And an inner lid having a window hole, and a part of the second window hole corresponding to the non-arranged position of the branch switch is closed by the window hole closing member. The member has a size substantially the same as that of the opening / closing operation surface of the branch switch and has a protrusion that faces a part of the second window hole from the inside of the box, and the protrusion faces a part of the second window hole. With the fixed part that can be attached to the fixing member that fixes the branch switch in the closed state, and the cover piece that covers approximately half of the width in the short direction of the main bar with the opening side, and is installed side by side with each branch switch A distribution board characterized by being fixed to the box with. 2. The distribution board according to claim 1, wherein a rib projecting portion is provided on a bottom surface of the window hole closing member, and a fitting portion into which the rib projecting portion is fitted is provided on the fixing member. . 3. The main body of the window hole closing member and the cover piece of the window hole closing member have a space from the main bar when the fixing portion of the window hole closing member is attached to the fixing member. The device is characterized in that it is separated.
Alternatively, the distribution board according to claim 2. 4. The fixing member includes an engaging portion located on the side of the main bar and a leaf spring with a locking portion located on the side distant from the main bar, and the window hole closing member is the window hole. On the side farther from the main bar of the closing member, as an extension of the inner lid abutting step slightly lower than the opening / closing operation surface of each branch switch, approximately just above the engaging portion of the leaf spring with an engaging portion. The distribution board according to any one of claims 1 to 3, further comprising a mounting operation unit that reaches.