JP2002135914A - Panel board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a panel board which can achieve a sured connecting work when branch switches are connected to bus bars by confirming whether or not the bus bars are properly inserted into connecting terminals of the branch switches. SOLUTION: A panel board is equipped with plural bus bars 1 electrically connected to a main switch 200 and branch switches 100 which are laid out longitudinally along with and at least on one side of the bus bars 1 and possess cutter-shaped connecting terminals 3 connected with at least one bus bar. The panel board is equipped with an indicating means capable of visually recognizing whether or not the degree of insertion of the connecting terminals 3 is equal to or larger than a specified value by viewing the branch switches 3 from front when the bus bars 1 and the branch switches 100 are connected by pushing the branch switches 100 in a way that the bus bars 1 are inserted into the branch switches 100.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a distribution board in which a connection terminal of a branch switch is fitted and connected to a conductive bar connected to a main switch. More specifically, the connection terminal is securely connected to the conductive bar. It is provided with a display means for recognizing whether or not it has been performed.

[0002]

2. Description of the Related Art FIG. 16 shows a conventional structure of a distribution board in which a connection terminal 3 of a branch switch 100 is fitted and connected to a conductive bar 1 connected to a main switch 200. (A) of FIG.
Is a front view, and FIG. 16 (b) is a side view. FIG. 17 shows a detailed configuration diagram of the branch switch 100.
The conductive bar 1 has a substantially strip shape and is connected to the main switch 200 by screws or the like. The connection terminal 3 has two opposing pieces, and the shortest distance between the two pieces is smaller than the thickness of the conductive bar 1. The connection terminal 3 and the conductive bar 1 are fitted and connected in a state where the two pieces of the connection terminal 3 sandwich the conductive bar 1. The fixing of the branch switch 100 is performed by, for example, (b) of FIG.
As shown in FIG.
A groove 1 is formed in the frame surface opposite to the frame surface having
01 is provided, one end of the fixing member 8 is inserted into the groove 101, and the fixing member 8 is fixed to the lower plate 300 of the distribution board with screws or the like. In addition, an electric wire is connected to the load-side connection portion 9 shown in FIG. 17, and the power supply on the load side is turned on and off by operating the handle 2 for opening and closing the contacts.

[0003]

In the above-mentioned distribution board, when the branch switch 100 is connected to the conductive bar 1, both opposing pieces of the connection terminal 3 form the longitudinal direction of the conductive bar 1. Fitting and connection are performed so that the ends enter. At this time, if the amount of pushing the branch switch 100 into the conductive bar 1 is small, as shown in FIG.
Insertion of the connection terminal 3 into the connector becomes insufficient. The contact portion 13 between the conductive bar 1 and the connection terminal 3 exists at or near the longitudinal end 11 of the conductive bar 1. Contact part 13
Is the end 11 of the conductive bar 1, the contact load between the connection terminal 3 and the conductive bar 1 is small, the contact resistance is large,
May cause abnormal heat generation. In addition, as shown in FIG. 19, when the contact portion 13 is near the end of the conductive bar 1,
The connection portion 13 may move under the influence of mechanical vibration or expansion or contraction due to a temperature change, resulting in the state shown in FIG.

[0004] The present invention has been made in view of the above circumstances, and a purpose thereof is to determine whether or not insertion of a connection terminal into a conductive bar is sufficient when a branch switch is connected to the conductive bar. It is an object of the present invention to provide a distribution board capable of confirming the connection and performing a reliable connection work.

[0005]

In order to solve the above-mentioned problems, the invention according to claim 1 comprises a plurality of conductive bars electrically connected to a main switch, and a plurality of conductive bars extending along the longitudinal direction of the conductive bars. A branch switch having a receiving blade-shaped connection terminal which is arranged side by side on at least one side and is fitted and connected to at least one conductive bar, wherein the branch switch is connected so that the conductive bar enters the connection terminal. By pushing the container,
In the configuration in which the conductive bar and the branch switch are connected, when the branch switch is viewed from the front, there is provided a display unit capable of visually recognizing whether the pushing amount of the connection terminal is a predetermined amount or more. It is characterized by having. Therefore, when the connection terminal is not sufficiently inserted into the conductive bar, the fact can be displayed.

According to a second aspect of the present invention, in the first aspect of the present invention, the display means protrudes from a frame of the branch switch when the pushing amount of the connection terminal is a predetermined amount or more. A member is provided. Therefore, when the connection terminal is not sufficiently inserted into the conductive bar, the fact can be displayed in a more easily understood manner.

According to a third aspect of the present invention, in the second aspect of the present invention, the display member is made of an insulating material, so that safety during connection work and operation is increased.

According to a fourth aspect of the present invention, in the second or third aspect, when the display member is pushed toward the frame of the branch switch, the connection between the connection terminal and the conductive bar is released. The branch switch can be easily removed from the conductive bar when it is necessary to replace the branch switch.

According to a fifth aspect of the present invention, in the first aspect of the present invention, the display means protrudes from the frame of the branch switch at the time of non-fitting connection, and the pressing amount of the connection terminal is limited. When the amount is equal to or more than the fixed amount, a display member to be housed inside the frame is provided. Therefore, when the connection terminal is inserted into the conductive bar in a sufficiently connected state, there is no portion protruding from the frame, and the volume of the branch switch can be reduced.

According to a sixth aspect of the present invention, in the fifth aspect of the present invention, the display member is made of an insulating material, so that safety during connection work and operation is increased.

According to a seventh aspect of the present invention, in the fifth or sixth aspect, when the display member is pushed out of the frame of the branch switch, the connection between the connection terminal and the conductive bar is established. It is characterized in that the branch switch is easily released from the conductive bar when it is necessary to replace the branch switch.

According to an eighth aspect of the present invention, in the first aspect of the present invention, the display means is placed at the center of the conductive bar in the width direction orthogonal to the longitudinal direction, and the pressing amount of the connection terminal is limited. When the amount is equal to or more than the fixed amount, a positioning member is provided so as to overlap the front surface of the frame of the branch switch. Therefore, when the connection terminal is not sufficiently inserted into the conductive bar, the fact can be displayed.

According to a ninth aspect of the present invention, in the eighth aspect of the present invention, the positioning member is placed via a spacer piece, and a gap is provided between the positioning member and the conductive bar. Since there is a gap between the positioning member and the conductive bar, the amount of heat released from the conductive bar increases, and the temperature rise of the branch switch and the conductive bar can be suppressed.

According to a tenth aspect of the present invention, in the eighth or ninth aspect, a plurality of holes are provided in the positioning member, and a plurality of holes are formed in the positioning member. Therefore, the heat radiation amount of the conductive bar increases, and the temperature rise of the branch switch and the conductive bar can be suppressed.

According to an eleventh aspect of the present invention, in any one of the eighth to tenth aspects, the positioning member is made of an insulator. Since the positioned positioning member covers the conductive bar, which is a portion where charging is performed, safety during connection work and operation is increased.

According to a twelfth aspect of the present invention, in the first aspect of the present invention, the display means indicates at the conductive bar a boundary indicating whether or not the connection terminal has reached at least a predetermined amount to be pushed. Is provided with a display mark. Therefore, since it is not necessary to add a component for display, it can be manufactured at low cost.

According to a thirteenth aspect of the present invention, in the twelfth aspect of the present invention, the display mark is colored by applying an insulating paint to the conductive bar, and the pressing amount of the connection terminal is a predetermined amount. Wherein the exposed portion of the conductive bar is covered with the insulating paint. Therefore, the conductive bar, which is a part for charging, is covered with the insulating paint, so that safety during connection work and operation is increased.

According to a fourteenth aspect of the present invention, in the first aspect of the present invention, as the display means, a boundary on the lower plate of the distribution board as to whether or not the connection terminal has reached at least a predetermined amount to be pushed. Are provided with a display mark. Therefore, since it is not necessary to add a component for display, it can be manufactured at low cost.

According to a fifteenth aspect of the present invention, in the first aspect of the present invention, as the display means, a confirmation hole extending from the front of the frame of the branching switch to the rear of the frame is provided. When the amount is equal to or more than a predetermined amount, the conductive bar is provided at a position where the conductive bar can be viewed through the confirmation hole. Therefore,
Since it is not necessary to add a component for display, it can be manufactured at low cost.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A distribution board according to an embodiment of the present invention has a configuration as shown in FIG.
This will be described below.

FIG. 1 is a connection configuration diagram of a branch switch and a conductive bar according to a first embodiment of the present invention. FIG. 1A is a configuration diagram in which a branch switch is fitted and connected to a conductive bar, and FIG. 1B is a stable connection state diagram of the conductive bar and a connection terminal, and FIG. c) is an exploded view of (a),
FIG. 1D is an enlarged view of the connection terminal and the display member.

A first embodiment of the present invention will be described with reference to FIG. As shown in FIG. 16, this distribution board is electrically connected to a single-phase three-wire main switch 200 having three-pole contacts and three load-side terminals inside the housing. A plurality of substantially rectangular conductive bars 1 and a branch switch 100 connected via the conductive bars 1 are provided. The branching switch 100 has a receiving blade-shaped connection terminal 3 fitted and connected to the conductive bar 1, a handle 2 for opening and closing a contact, and a pushing amount of the connection terminal 3 not less than a predetermined amount. And a display member 4 that protrudes from the frame of the branch switch 100 in such a case. In this embodiment, the display member 4 is formed of a substantially U-shaped member, and has a configuration in which the display member 4 is folded around a shaft 41. When viewed from the central axis direction of the shaft 41, the end 43 of the display member 4 is sandwiched between two opposing pieces of the connection terminal 3. When the connection terminal 3 is not connected to the conductive bar 1, the display member 4 is housed in the branch switch 100. When the conductive bar 1 is inserted between two opposing pieces of the connection terminal 3 and the branching switch 100 is moved to the conductive bar 1 side, the end 43 of the display member 4 becomes the end 1 of the conductive bar 1.
Touch 1. When the movement is further advanced, the display member 4 slides between the shaft 41 and the display unit support 42, and the display unit 44 protrudes from the frame surface including the connection terminal 3 of the branch switch 100. At this time, the contact portion 13 between the conductive bar 1 and the connection terminal 3 is sufficiently separated from the end 11 of the conductive bar 1 and is in a stable connection state. Further, when the branch switch 100 is viewed from the handle 2 side, it is possible to confirm whether or not the display member 4 protrudes from the branch switch 100. Therefore, the insertion of the connection terminal 3 into the conductive bar 1 is sufficient. You can check whether there is.

Further, if an insulating material such as a flame-retardant fiber or a polyethylene film is used as the material of the display member 4, in this embodiment, when a stable connection state is obtained, the display made of the insulating material is used. Since the member 4 is located on the front side of the conductive bar 1 and covers the conductive bar 1 which is a part to be charged, it is possible to prevent a finger or the like from entering the conductive bar 1 from the front side of the panel. Increased safety during operation.

FIG. 2 is a connection configuration diagram of a branch switch and a conductive bar according to a second embodiment of the present invention. 2A is a configuration diagram in which a branch switch is fitted and connected to a conductive bar, FIG. 2B is an exploded view of FIG. 2A, and FIG. 2C is a connection terminal. It is an enlarged view of a display member.

A second embodiment of the present invention will be described with reference to FIG. In this embodiment, the display member 4 is formed of a hollow, substantially rectangular frame, and one end 43 of the display member 4 is sandwiched between two opposing pieces of the connection terminal 3. This is different from the first embodiment in the point. When the connection terminal 3 is not connected to the conductive bar 1, the display member 4 is housed in the branch switch 100. When the conductive bar 1 is inserted between two opposing pieces of the connection terminal 3 and the branch switch 100 is moved to the conductive bar 1 side, the end 43 of the display member 4 comes into contact with the end 11 of the conductive bar 1. . When the movement is further advanced, the display member 4 slides and the display unit 4
Reference numeral 4 protrudes from the frame surface of the branch switch 100 opposite to the frame surface provided with the connection terminals 3.

FIG. 3 is a connection configuration diagram of a branch switch and a conductive bar according to a third embodiment of the present invention. 3A is a configuration diagram in which a branch switch is fitted and connected to a conductive bar, FIG. 3B is an exploded view of FIG. 3A, and FIG. 3C is a connection terminal. It is an enlarged view of a display member.

A third embodiment of the present invention will be described with reference to FIG. This embodiment is different from the first embodiment in that the display member 4 has a substantially rectangular parallelepiped shape and is close to the connection terminal 3, and a slope is provided at an end 43 of the conductive bar 1 that is in contact with the end 11 during fitting connection. This is different from the embodiment. When the connection terminal 3 is not connected to the conductive bar 1, the display member 4 is housed in the branch switch 100. The conductive bar 1 is inserted between two opposing pieces of the connection terminal 3, and the branch switch 100 is inserted.
Is moved to the conductive bar 1 side, the end 43 of the display member 4 is moved.
Contacts the end 11 of the conductive bar 1. When the movement is further advanced, the display member 4 slides, and the display unit 44 protrudes from the mounting surface of the handle 2 of the branch switch 100 or a surface substantially parallel thereto in such a manner as to be pushed up. In the present embodiment, the color of the side surface of the display member 4 and the color of the surface of the display unit 44 may be different from each other to make the display easier to understand.

In the first to third embodiments, when the branch switch 100 must be replaced with a new one, the frame of the branch switch 100 is connected to the conductive bar 1.
And the display unit 44 is turned to the opposite side.
Pushing it to the 0 side, the conductive bar 1 and the connection terminal 3
Can be easily dissociated.

FIG. 4 is a connection configuration diagram of a branch switch and a conductive bar according to a fourth embodiment of the present invention. 4A is a configuration diagram in which a branch switch is fitted and connected to a conductive bar, FIG. 4B is an exploded view of FIG. 4A, and FIG. 4C is a connection terminal. It is an enlarged view of a display member.

A fourth embodiment of the present invention will be described with reference to FIG. In the present embodiment, the display member 4 protrudes from the frame of the branch switch 100 at the time of non-fitting connection, and is inserted into the frame when the pushing amount of the connection terminal 3 is a predetermined amount or more at the time of fitting connection. It differs from the first embodiment in that it is stored. In this embodiment, the display member 4 is connected to the end 1 of the conductive bar 1 at the time of fitting connection.
A portion having an end 43 on the side in contact with 1 and a portion forming a display portion 44 are connected by a shaft 41. When the connection terminal 3 is not connected to the conductive bar 1, the display unit 44 projects from the front of the frame of the branch switch 100 by a spring 45 attached to a portion having the end 43 of the display member 4. Has become.
The conductive bar 1 is inserted between two opposing pieces of the connection terminal 3,
When the branch switch 100 is moved toward the conductive bar 1, the end 43 of the display member 4 comes into contact with the end 11 of the conductive bar 1.
When the movement is further advanced, the display member 4 rotates about the shaft 41, and the display unit 44 is stored in the front of the frame of the branch switch 100.

In this embodiment, when replacing the branch switch 100 with a new one, the branch switch 1
00 frame on the opposite side of the conductive bar 1
By rotating the display unit 44 so as to protrude from the front of the frame of the branch switch 100, the conductive bar 1 and the connection terminal 3 can be easily dissociated.

Further, when the connection terminal 3 is sufficiently inserted into the conductive bar 1, the display unit 44 displays the branch switch 1.
Since it does not protrude from the frame No. 00, a more compact configuration can be achieved.

In the second to fourth embodiments, similarly to the first embodiment, if the display member 4 is made of an insulating material such as a flame-retardant fiber, a polyethylene film, or the like, the display member 4 can be used for connection work and Increased safety during operation.

FIG. 5 is a connection diagram of a branch switch and a conductive bar according to a fifth embodiment of the present invention. 5 (a) is a perspective view of a positioning member, FIG. 5 (b) is a configuration diagram of a front face of a distribution board, and FIG. 5 (c) is a fitting of a branch switch to a conductive bar. FIG. 5D is a configuration diagram in which connection is made, and FIG.
FIG. 4 is a stable connection state diagram of the conductive bar and the connection terminal.

A fifth embodiment of the present invention will be described with reference to FIG. The present embodiment is different from the first embodiment in that a positioning member 5 placed on the front side of the conductive bar 1 is provided as a display unit instead of the display member 4. The positioning member 5 has a substantially rectangular shape, and when the branching switch 100 is viewed from the front when the pushing amount of the connection terminal 3 is a predetermined amount, the positioning member 5 and the end 102 of the frame front of the branching switch 100 are positioned. 5 is fixed to the conductive bar 1 at a position where one of the ends in the longitudinal direction coincides with and overlaps, for example, by screwing, bonding, or the like. Connection terminal 3
When the conductive bar 1 is inserted between the two opposing pieces and the branch switch 100 is moved to the conductive bar 1 side, the branch switch 10
0, the front end 102 of the frame approaches the positioning member 5, and when viewed from the handle 2 side of the branch switch 100, the end 1 of the frame front of the branch switch 100 is eventually formed.
The conductive bar 1 cannot be seen from a gap between the positioning member 5 and the positioning member 5. That is, the end 102 of the branch switch 100 on the front of the frame and the end of the positioning member 5 in the longitudinal direction are in contact with each other. At this time, the contact portion 13 between the conductive bar 1 and the connection terminal 3 is sufficiently separated from the end 11 of the conductive bar 1 and is in a stable connection state. As described above, when the branch switch 100 is viewed from the handle 2 side, the gap between the end 102 on the front surface of the frame of the branch switch 100 and the positioning member 5 is confirmed, so that the connection terminal 3 is inserted into the conductive bar 1. It can be confirmed whether or not is sufficient.

FIG. 6 is a diagram showing the connection between a branch switch and a conductive bar according to a sixth embodiment of the present invention. FIG. 6A is a perspective view of a positioning member, and FIG. 6B is a configuration diagram in which a branch switch is fitted and connected to a conductive bar.

A sixth embodiment of the present invention will be described with reference to FIG. This embodiment is different from the fifth embodiment in that the positioning member 5 has a shape having concave portions 51 at both ends in the longitudinal direction. In this embodiment, when viewed from the handle 2 side of the branch switch 100, the end 102 of the frame front of the branch switch 100 and one end in the longitudinal direction of the positioning member 5 coincide with each other, and overlap. After the conductive bar 1 becomes invisible from these gaps, the end 10 of the branch switch 100 at the front of the frame is further moved.
2 can enter the concave portion 51 of the positioning member 5, so that a gap is hardly generated between the end portion 102 of the branch switch 100 on the front surface of the frame and the positioning member 5, and the connection terminal 3 is more securely inserted into the conductive bar 1. Can be confirmed whether or not is sufficient.

FIG. 7 is a connection diagram of a branch switch and a conductive bar according to a seventh embodiment of the present invention. Seventh of the present invention
An embodiment will be described with reference to FIG. In this embodiment, the end 102 of the frame front of the branch switch 100 is
The fifth embodiment is different from the fifth embodiment in that a concave portion 103 for allowing the positioning member 5 to be inserted is provided. In this embodiment, when viewed from the handle 2 side of the branch switch 100,
Eventually, the end 102 on the front of the frame of the branching switch 100 and one end forming the longitudinal direction of the positioning member 5 coincide with each other and overlap, and after the conductive bar 1 cannot be seen from these gaps, the positioning member 5 is further moved. Since the recess 103 is inserted into the concave portion 103 at the end 102 on the front of the frame of the branch switch 100, a gap is hardly formed between the end 102 on the front of the frame of the branch switch 100 and the positioning member 5, and the connection terminal to the conductive bar 1 is more reliably formed. 3 can be confirmed whether the insertion is sufficient.

It should be noted that the term “overlap” in claim 8 of the present invention means that the end 102 on the front of the frame of the branching switch 100 in the fifth embodiment coincides with one end forming the longitudinal direction of the positioning member 5. The overlapping state, the state in which the end 102 of the frame front of the branching switch 100 in the sixth embodiment overlaps with the recess 51 of the positioning member 5 and the state in which the positioning member 5 in the seventh embodiment is the branching switch 100 Frame front end 102
In the concave portion 103 in FIG.

FIG. 8 is a connection configuration diagram of a branch switch and a conductive bar according to an eighth embodiment of the present invention. FIG. 8A is a perspective view of a positioning member, and FIG. 8B is a configuration diagram in which a branch switch is fitted and connected to a conductive bar.

An eighth embodiment of the present invention will be described with reference to FIG. This embodiment is different from the fifth embodiment in that a foot 52 is provided at a corner of the positioning member 5. When the foot 52 provided on the positioning member 5 is fixed to the conductive bar 1 by, for example, screwing, bonding, or the like, a gap is generated between the positioning member 5 excluding the foot 52 and the conductive bar 1. By releasing heat from this gap, the amount of heat radiation from the conductive bar 1 is increased, and the branch switch 100 and the conductive bar 1
Temperature rise can be suppressed.

In this embodiment, the positioning member 5 is provided with a concave portion 61, and the branching switch 100 is provided with a concave portion 103 at the end 102 on the front surface of the frame, in which the positioning member 5 can be inserted. It may be configured in combination with the seventh embodiment.

FIG. 9 is a configuration diagram of a distribution board front according to a ninth embodiment of the present invention. A ninth embodiment of the present invention will be described with reference to FIG. This embodiment is different from the fifth embodiment in that a plurality of holes 53 penetrating from the front to the back of the positioning member 5 are provided. By releasing heat from the plurality of holes 53 provided in the positioning member 5, the amount of heat radiation from the conductive bar 1 is increased, and the branch switch 1
00 and the temperature rise of the conductive bar 1 can be suppressed.

In this embodiment, the positioning member 5 is provided with a concave portion 61, and the branching switch 100 is provided with a concave portion 103 at an end portion 102 on the front surface of the frame. It may be configured in combination with the seventh embodiment.

In the fifth to ninth embodiments, when the positioning member 5 is made of an insulating material such as urea or phenol, a stable connection state is obtained. Of the conductive bar 1, which is a part for performing the above, can be prevented from touching the conductive bar 1 from the front side of the panel with a finger or the like, and the safety at the time of connection work and operation is increased.

FIG. 10 is a configuration diagram of a distribution board front according to a tenth embodiment of the present invention. A tenth embodiment of the present invention will be described with reference to FIG. In the present embodiment, as a display means, instead of the display member 4, a linear display mark 6 is formed on the conductive bar 1 along the longitudinal direction of the conductive bar 1.
Is different from the first embodiment. When the branch switch 100 is viewed from the front when the pushing amount of the connection terminal 3 (not shown) is equal to or more than a predetermined amount, the display mark 6 indicates the end 1 of the front of the frame of the branch switch 100.
02 is provided at a position that overlaps with 02. The display mark 6 may be painted with oil-based ink, or may be formed by cutting out the conductive bar 1. Further, the display mark 6 may be, for example, a round one as shown in FIG. 11 or a hole provided in the conductive bar 1 as shown in FIG. The conductive bar 1 is inserted between two opposing pieces of the connection terminal 3 (not shown), and the branch switch 10 is inserted.
0 is moved to the conductive bar 1 side, and when viewed from the handle 2 side of the branch switch 100, the branch switch 100
The front end 102 of the frame covers the display mark 6, and the display mark 6 becomes invisible. At this time, as shown in FIG. 1B, the contact portion 13 between the conductive bar 1 and the connection terminal 3 is sufficiently separated from the end 11 of the conductive bar 1 and is in a stable connection state. As described above, when the branch switch 100 is viewed from the handle 2 side, it is confirmed whether or not the display mark 6 can be seen, so that the connection terminal 3 to the conductive bar 1 can be confirmed.
It is possible to confirm whether or not the insertion (not shown) is sufficient.

FIG. 13 is a structural view of a distribution board front according to an eleventh embodiment of the present invention. An eleventh embodiment of the present invention will be described with reference to FIG. This embodiment is different from the tenth embodiment in that the display mark 6 is a color boundary formed by color-coding the surface of the conductive bar 1 and is colored with a paint or the like which is an insulating material. In this embodiment, when a stable connection state is obtained, the exposed portion of the conductive bar 1 which is a portion to be charged is covered with an insulating paint or the like.
Can be prevented from being touched by a finger or the like, and safety during connection work and operation is increased.

FIG. 14 is a structural view of a distribution board front according to a twelfth embodiment of the present invention. A twelfth embodiment of the present invention will be described with reference to FIG. In the present embodiment, the lower plate 30 of the distribution board is used as the display means instead of the display member 4.
0 is different from the first embodiment in that a linear display mark 6 is provided in parallel with the longitudinal direction of the conductive bar 1.
When the branch switch 100 is viewed from the front when the pushing amount of the connection terminal 3 (not shown) is a predetermined amount, the display mark 6 is opposite to the end 102 on the front of the frame of the branch switch 100. It is provided in a position that coincides with and overlaps the end on the side. The display mark 6 may be painted with an oil-based ink, or may be formed by cutting out the conductive bar 1. In addition, display mark 6
May be, for example, a round shape, a hole provided in the lower plate 300, or a color boundary formed by color-coding the surface of the lower plate 300. When the conductive bar 1 is inserted between two opposing pieces of the connection terminal 3 (not shown) and the branch switch 100 is moved to the conductive bar 1 side, when the branch switch 100 is viewed from the handle 2 side, At first, the display mark 6 of the lower plate 300, which is covered and hidden by the lower surface of the branch switch 100, can be visually confirmed. At this time,
As shown in FIG. 1B, the contact portion 13 between the conductive bar 1 and the connection terminal 3 is sufficiently separated from the end 11 of the conductive bar 1 and is in a stable connection state. As described above, when the branch switch 100 is viewed from the handle 2 side, by checking whether or not the display mark 6 is visible, the insertion of the connection terminal 3 (not shown) into the conductive bar 1 is sufficient. You can check whether there is.

FIG. 15 is a configuration diagram of a distribution board front according to a thirteenth embodiment of the present invention. A thirteenth embodiment of the present invention will be described with reference to FIG. In this embodiment, a branch switch 100 is used as a display unit instead of the display member 4.
This embodiment differs from the first embodiment in that a confirmation hole 104 is provided on the end portion 102 side of the front side of the frame from the front side of the frame of the branch switch 100 to the rear side. The confirmation hole 104 is provided so that the connection terminal 3 cannot be seen through the confirmation hole 104 when the branch switch 100 is viewed from the handle 2 side. Connection terminal 3
When the conductive bar 1 is inserted between two opposing pieces (not shown) and the branch switch 100 is moved to the conductive bar 1 side,
When viewed from the handle 2 side of the branching switch 100, the surface of the conductive bar 1, which was initially invisible through the confirmation hole 104, can be visually confirmed through the confirmation hole 104. At this time, as shown in FIG. 1B, the contact portion 13 between the conductive bar 1 and the connection terminal 3 is connected to the end 1 of the conductive bar 1.
1 and is in a stable connection state. As described above, when the branch switch 100 is viewed from the handle 2 side, it is confirmed whether or not the conductive bar 1 can be visually confirmed through the confirmation hole 104 provided on the front surface of the frame of the branch switch 100. Connection terminal 3 to
It is possible to confirm whether or not the insertion (not shown) is sufficient.

Further, by coloring the front side of the conductive bar 1, it is possible to more easily confirm whether or not the conductive bar 1 is visible through the confirmation hole 104.

[0051]

As described above, according to the present invention, when a branch switch is connected to a conductive bar, whether or not the connection terminal of the branch switch is sufficiently connected to the conductive bar is displayed. By viewing this display, a person can confirm whether or not the connection state is appropriate,
A reliable connection operation can be performed.

[Brief description of the drawings]

FIG. 1 is a connection configuration diagram of a branch switch and a conductive bar according to a first embodiment of the present invention.

FIG. 2 is a connection configuration diagram of a branch switch and a conductive bar according to a second embodiment of the present invention.

FIG. 3 is a connection configuration diagram of a branch switch and a conductive bar according to a third embodiment of the present invention.

FIG. 4 is a connection configuration diagram of a branch switch and a conductive bar according to a fourth embodiment of the present invention.

FIG. 5 is a connection configuration diagram of a branch switch and a conductive bar according to a fifth embodiment of the present invention.

FIG. 6 is a connection configuration diagram of a branch switch and a conductive bar according to a sixth embodiment of the present invention.

FIG. 7 is a connection configuration diagram of a branch switch and a conductive bar according to a seventh embodiment of the present invention.

FIG. 8 is a connection configuration diagram of a branch switch and a conductive bar according to an eighth embodiment of the present invention.

FIG. 9 is a configuration diagram of a distribution board front according to a ninth embodiment of the present invention.

FIG. 10 is a configuration diagram of a distribution board front according to a tenth embodiment of the present invention.

FIG. 11 is a configuration diagram of a distribution board front showing a different example according to the tenth embodiment of the present invention.

FIG. 12 is a configuration diagram of a distribution board front showing a different example according to the tenth embodiment of the present invention.

FIG. 13 is a configuration diagram of a distribution board front according to an eleventh embodiment of the present invention.

FIG. 14 is a configuration diagram of a distribution board front according to a twelfth embodiment of the present invention.

FIG. 15 is a configuration diagram of a distribution board front according to a thirteenth embodiment of the present invention.

FIG. 16 is a configuration diagram of the front of a conventional distribution board.

FIG. 17 is a configuration diagram of a conventional branch switch.

FIG. 18 is a connection configuration diagram when a contact portion is an end of a conductive bar.

FIG. 19 is a connection configuration diagram when a contact portion is near an end of a conductive bar.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 conductive bar 3 connection terminal 4 display member 5 positioning member 53 hole 6 display mark 100 branch switch 104 confirmation hole 200 main switch 300 lower plate

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takuya Kagawa 1048 Kadoma Kadoma, Osaka Pref. Matsushita Electric Works, Ltd. Terms (reference) 5G030 BA01 FA01 FB03 XX12 YY03

Claims (15)

[Claims] 1. A plurality of conductive bars electrically connected to a main switch, and are connected to at least one of the conductive bars in parallel with at least one side along the longitudinal direction of the conductive bars. A branch switch having a blade-shaped connection terminal, such that the conductive bar enters the connection terminal,
In the configuration in which the conductive switch and the branch switch are connected by pushing the branch switch, when the branch switch is viewed from the front, it is visually determined whether the pushing amount of the connection terminal is a predetermined amount or more. A distribution board comprising a display means that can be visually recognized. 2. The display device according to claim 1, wherein a display member protruding from a frame of the branching switch is provided as the display means when a pushing amount of the connection terminal is a predetermined amount or more. Switchboard. 3. The distribution board according to claim 2, wherein the display member is made of an insulating material. 4. The connection between the connection terminal and the conductive bar when the display member is pushed toward the frame of the branch switch.
Distribution board described. 5. The display means protrudes from the frame of the branch switch when not fitted and connected, and is accommodated in the frame when the pushing amount of the connection terminal is a predetermined amount or more. The distribution board according to claim 1, further comprising a display member that is provided. 6. The distribution board according to claim 5, wherein said display member is made of an insulating material. 7. The connection according to claim 5, wherein the connection between the connection terminal and the conductive bar is released when the display member is pushed out of the frame of the branch switch. Electric board. 8. The frame of the branch switch, wherein the display means is placed at the center in the width direction orthogonal to the longitudinal direction of the conductive bar, and when the pushing amount of the connection terminal is a predetermined amount or more. The distribution board according to claim 1, further comprising a positioning member that overlaps the front surface. 9. The distribution board according to claim 8, wherein the positioning member is placed via a spacer piece, and a gap is provided between the positioning member and the conductive bar. 10. The distribution board according to claim 8, wherein a plurality of holes are provided in the positioning member. 11. The distribution board according to claim 8, wherein the positioning member is made of an insulating material. 12. The display means according to claim 1, wherein a display mark is provided on the conductive bar at a position indicating a boundary of whether or not the connection terminal has reached at least a predetermined amount to be pushed. Distribution board described. 13. The display mark is colored by applying an insulating paint to the conductive bar, and when a pressing amount of the connection terminal is a predetermined amount, an exposed portion of the conductive bar is connected to the insulating bar. The distribution board according to claim 12, wherein the distribution board is covered with a paint. 14. The display means is provided with a display mark on a lower plate of the distribution board at a position indicating a boundary as to whether or not the connection terminal has reached at least a predetermined amount to be pushed in. The distribution board according to claim 1. 15. A confirmation hole extending from the front of the frame of the branch switch to the back of the frame as the display means, and when the pushing amount of the connection terminal is a predetermined amount or more, the conductive hole passes through the confirmation hole. The distribution board according to claim 1, wherein the bar is provided at a position where the bar can be viewed.