JPS6321403B2 - - Google Patents

Description

[Detailed Description of the Invention] This invention connects a unit main body that is removably housed in a unit chamber formed in a distribution box and a load cable arranged in a wiring processing chamber formed in a distribution box. The present invention relates to a closed power distribution board in which the mounting form of the connector can be changed according to the capacity of the unit. For example, as shown in FIG. 1, some closed switchboards have unit chambers 2 formed in multiple stages within a distribution box 1, and a wiring processing chamber 3 in which wiring and load cables are arranged on the side thereof. FIG. 2 shows the unit chamber 2. As shown in FIG. This unit room 2 is partitioned off at the top and bottom by shelf boards 4, respectively.
Furthermore, a vertical busbar 5 is installed at the back of this unit chamber 2.
is attached by a vertical busbar support member 6, and a disconnection member attachment plate 8 is attached to the side portion on the wiring processing chamber 3 side. This disconnection member mounting plate 8 has a control disconnection receptacle (hereinafter referred to as
A load side main circuit disconnection receptacle (hereinafter referred to as a WB type connector) 10 is attached to the front side of the unit chamber 2 of the plate 8. On the other hand, the third
The figure shows the main body 11 of the unit. The case 12 of the unit body 11 has a wiring sheath disconnector 13.
Electrical equipment such as a magnetic contactor 14 and the like are attached. Furthermore, a control disconnect plug (hereinafter referred to as MA type connector) 16 and a load side main circuit disconnect plug (hereinafter referred to as MB type connector) 17 are attached to the side plate 15 on the right side of the case 12 in the figure. ing. The above MA type connector 16 is a WA type connector 9 attached to the disconnection section mounting plate 8.
It was established in response to the The MA type connector 16 is connected to the wiring of each electrical device within the unit main body 11 . Further, the MB type connector 17 is provided corresponding to the WB type connector 10 attached to the disconnecting member mounting plate 8. Wiring different from the wiring connected to the MA type connector 16 of each electrical device in the unit main body 11 is connected to the MB type connector 17. Therefore, if the unit main body 11 is stored in the unit chamber 2 as shown in FIG.
Each of the electrical devices in the vertical busbar 5 is connected to the vertical bus bar 5 via a main circuit connector 18 on the power supply side. At the same time, by connecting the MA type connector 16 to the WA type connector 9, each of the electrical devices mentioned above is connected to the control circuit, and the MB
By connecting the type connector 17 to the WB type connector 10, each of the electrical devices described above is connected to an external circuit. By the way, in the above-mentioned closed distribution board, the connectors that connect the load cables and each unit body are all located on the same line in the width direction of the distribution box, and the distances from the frame are equal. For this reason, as shown in FIG. 5, a small capacity unit main body 20 equipped with electrical equipment such as a magnetic contactor 19 with a small electric capacity and an electromagnetic contactor 2 with a large electric capacity are installed.
When large-capacity unit main bodies 22 each equipped with electrical equipment of the first class are housed in a unit room, the following problems arise. That is, in the case of the large-capacity unit main body 22 , the load cable 28 is thicker than that of the small-capacity unit main body 20, and the space in the wiring processing chamber 3 is larger than the bending dimension (curvature radius) of the large-capacity load cable 28. This cable 28
In order to connect the cable to the WB type connector 27, its bending dimension must be larger than that of the small capacity load cable 25. Therefore, the cable 28 must be bent with great force, resulting in poor workability. Further, if the cable 28 is elastic, after the cable 28 is attached, a force in the clockwise direction as shown in the figure acts on the connecting portion A in FIG. Therefore, if this connection part A is fastened with bolts, there is a risk that the bolts may loosen and the cable 28 may come off. In addition, since the cable 28 is not bent at a sufficient bending dimension and is bent at an acute angle, the sheathing of the cable 28 may be torn.
Dielectric breakdown of the cable 28 may occur. This invention was made in consideration of the above-mentioned circumstances, and an object of the present invention is to provide a closed power distribution board that can ensure the bending dimension of the cable according to the thickness of the load cable and that can effectively utilize the space inside the panel. do. An embodiment of the present invention will be described below with reference to the drawings. 6a shows a state in which a small capacity unit main body 32 is stored in the unit chamber 31, and FIG. 6b shows a state in which a large capacity unit main body 32 is stored in the unit chamber 31.
3 is shown in a state where it is stored. The above-mentioned small capacity unit main body 32 and large capacity unit main body 33
is constructed by combining a case 34 shown in FIG. 7a and an attachment 35 shown in FIG. 7b. As shown in FIG. 7a, the case 34 has a floor plate 36 with a predetermined length cut out on the right side of the figure;
Side plate 37 on the left side of the illustration, instrument mounting plate 3 on the back side
8. It is formed from a side plate 39 on the right side in the figure, which is cut out from the bottom from approximately the center. Therefore, a substantially L-shaped opening 40 is formed in the case 34 at the lower right side in the figure. Furthermore, an opening 41 is provided approximately at the center of the side plate 39 for attaching an MC type connector to be described later. Furthermore, attachment holes 42a and 42 are provided at the edge of the side plate 39 along the opening 40.
b is provided. Similarly, the above-mentioned mounting holes 42a and 42b are provided at the edge of the floor plate 36 along the opening 40.
Attachment holes 43a and 43b are provided at positions corresponding to . On the other hand, attachment 35 is the seventh
As shown in FIG. b, a support plate 44S corresponding to the cutout of the floor plate 36 of the case 34, a mounting plate 44T corresponding to the cutout of the side plate 39, and a mounting edge 45 of the support plate 44S on the left side in the figure. , the upper mounting edge 46 of the mounting plate 44T in the illustration.
, each bent at right angles. Further, the support plate 44S is provided with a net portion 47, and the mounting plate 44T is provided with a net portion 47, which will be described later.
An opening 48 is provided for mounting an MD type connector. Furthermore, the floor plate 3 of the case 34
Mounting holes 49a, 49b are provided in the support plate 44S, and mounting holes 50a, 50b are provided in the mounting edge 46, corresponding to the mounting holes 43a, 43b of No. 6, respectively. Similarly, the side plate 3 of the case 34
Mounting holes 51a, 51b are provided in the mounting plate 44T, and mounting holes 52a, 52b are provided in the mounting edge 45 in correspondence with the mounting holes 42a, 42b of 9, respectively. Figure 8a shows the L of case 34.
This figure shows a state in which the attachment 35 is attached to the letter-shaped opening 40 so as to form a rectangular parallelepiped shape as a whole and is used in the small capacity unit main body 32. FIG. 1B shows a state in which the attachment 35 is attached to the case 34 in a rectangular parallelepiped shape with the lower right corner cut out to form a space, and is used in the large-capacity unit main body 33 . In this case, when used in the small capacity unit main body 32 , the mounting holes 43a and 43b of the floor plate 36 of the case 34 and the mounting holes 49a and 49a of the support plate 44S of the attachment 35 are
9b is attached by bolting or the like, and the attachment hole 42 of the side plate 39 of the case 34 is attached.
Mounting plate 4 for a, 42b and attachment 35
The 4T mounting holes 51a and 51b are attached by bolting or the like. When used in the large-capacity unit main body 33 , the mounting holes 43a and 43b of the floor plate 36 of the case 34 and the mounting hole 50 of the mounting edge 46 of the attachment 35 are also used.
a, 50b are attached by bolts or the like, and the attachment holes 42a, 42b of the side plate 39 of the case 34 and the attachment holes 52a, 52b of the attachment edge 45 of the attachment 35 are attached by bolts or the like. In this case, the attachment plate 44T of the attachment 35 is attached to the small capacity unit main body 32 and the large capacity unit main body 33 with the front and back sides reversed. As a result, the attachment 35 can be attached to the mounting plate 44 according to the size of the unit bodies 32, 33.
T are arranged at different positions along the width direction of the unit chamber 31, and especially in the case of a large-capacity unit main body 33, the mounting plate 44T of the attachment 35 is arranged closer to the center side in the width direction of the unit chamber 31. will be done. On the other hand, in FIG. 6a, a disconnection section attachment plate 56 as a partition plate is attached to the end of the shelf board 54 forming the unit chamber 31 formed in the distribution box 53 on the wiring processing chamber 55 side. . A control disconnector receptacle (hereinafter referred to as a WC type connector) 57 is attached to the disconnector attachment plate 56. Wiring inside the wiring processing chamber 55 is connected to this WC type connector 57. Further, in the unit chamber 31, a load side main circuit disconnection section receptacle (hereinafter referred to as a WD type connector) 58 is attached in front of the disconnection section mounting plate 56. The terminal 59 of the WD type connector 58 is connected to the wiring processing chamber 5.
5 is connected to the small capacity load cable 60. Further, a control disconnector plug (hereinafter referred to as MC type connector) 61 that can be connected to and separated from the WC type connector 57 is attached to the opening 41 of the side plate 39 of the small capacity unit main body 32, and the attachment 35 In the opening 48 of the mounting plate 44T, there is a load-side main circuit disconnection plug (hereinafter referred to as MD type connector) 62 that can be connected to and separated from the WD type connector 58.
is installed. In addition, in FIG. 6b, the disconnection part mounting plate 56 and the WC type connector 5
7 is attached at the same position as when storing the small capacity unit main body 32 . The WD type connector 63 is a WD type connector installed in the unit chamber that houses the small capacity unit body 32 , so that it is located in the space formed at the lower right side of the case 34 when the large capacity unit body 33 is housed. It is attached at a position farther away from the wiring processing chamber 55 than from the wiring processing chamber 58. A large capacity load cable 65 in the wiring processing chamber 55 is connected to the terminal 64 of this WD type connector 63. Furthermore, an MC type connector 61 is attached to the opening 41 of the case 34 of the large capacity unit main body 33 , as in the case of the small capacity, and a mounting plate for the attachment 35 (the front and back sides are different from the case of the small capacity). Opposite side) 44T opening 48
An MD type connector 62 that can be connected to and separated from a WD type connector 63 is attached to the WD type connector 63. In the closed switchboard configured as described above, the unit body is formed by appropriately combining the case 34 and the attachment 35 depending on the electric capacity of the unit body.
The mounting position of the unit chamber 31 can be changed in two stages in the width direction of the unit chamber 31. That is, in the small capacity unit main body 32 , as shown in FIG.
The MD type connector 62 can be installed at a position close to the 6th position in the large capacity unit main body 33 .
As shown in FIG. b, the MD type connector 62 can be attached at a position farther from the wiring processing chamber 55 than at the attachment position on the small capacity side (a position closer to the center in the width direction of the unit chamber 31). Therefore, on the small capacity unit main body 32 side, the WD type connector 58 can be installed at the right end of the unit chamber 31, and on the large capacity unit main body 33 side, the WD type connector 63 can be installed closer to the unit chamber 31 than on the small capacity side. It can be installed closer to the center in the width direction. Therefore, the small capacity load cable 60 can be connected to the terminal 59 of the WD type connector 58 at a position close to the wiring processing chamber 55. Further, the large capacity load cable 65 can be connected to the terminal 64 of the WD type connector 63 at a position remote from the wiring processing chamber 55. Therefore, even if the width dimension of the wiring processing chamber 55 is set based on the bending dimension of the small capacity load cable 60, a sufficient bending dimension of the large capacity load cable 65 can be ensured. Therefore, the width of the wiring processing chamber 55 in the distribution box is reduced to a small capacity load cable 6 with a small bending dimension.
Since it can be determined based on the bending dimension of 0, the space inside the panel can be used effectively. In turn, this can contribute to downsizing of the closed switchboard. Further, as shown in FIG. 6b, the large-capacity unit 33 has a space formed at the lower right side in the figure. Support plate 44 of attachment 35 forming this space
Since S is located approximately at the center of the case 34 of the large-capacity unit main body 33 , the net portion 47 of the support plate 44S acts as a vent. Therefore, the heat generated by the large-capacity electromagnetic contactor can be released to the outside through the mesh portion 47, and the heat is no longer trapped inside the case.
Therefore, each electrical device within the case can be prevented from being affected by heat. The same applies even if the case 66 of the large-capacity unit main body is enlarged as shown in FIG. If installed, the heat dissipation effect will be even more effective. Next, other embodiments of the invention will be described. In FIGS. 10a and 10b, the same parts as in FIGS. 6a and 6b are given the same symbols, and the explanation thereof will be omitted, and different parts will be explained here. Figure 10a
1 shows a state in which a small-capacity unit body 32 is housed in the unit chamber 31 , and FIG. In this embodiment, a WD type connector 71 is attached to a disconnecting section attachment plate 72 via an L-shaped attachment plate 73 as an attachment member. FIG. 11a shows a disconnection section mounting plate 72 as a partition plate, and FIG. 11b shows an L-shaped mounting plate 73. The disconnection section attachment plate 72 is a flat plate, and an opening 74 is provided at approximately the upper center of the plate 72 so that the WC type connector 57 can be attached thereto. Attachment edges 81 and 82 are provided at the rear end and lower end in the figure of this disconnection section attachment plate 72, and these attachment edges 81 and 82 are provided with attachment edges 81 and 82.
Mounting holes 80a and 8 for fixing 2
0b is provided, and this mounting hole 80a
is fixed to the above-mentioned power distribution box 53, and the mounting hole 80b is fixed to the shelf board 54 shown in FIG. Furthermore, mounting holes 75a and 75b for mounting an L-shaped mounting plate 73 are provided near the front end of the disconnection section mounting plate 72 in the drawing, respectively. On the other hand, the L-shaped mounting plate 73 has one long piece L and the other short piece S, and each has a mounting hole 75 in the disconnection part mounting plate 72.
Mounting holes are provided near the corners corresponding to the corners a and 75b. The mounting holes 76a, 76b on the bent side of the elongated hole l and the mounting holes 77a, 77b on the bent side of the short piece s are formed on this L-shaped mounting plate 7.
3 to the disconnection section attachment plate 72. Also, the mounting holes 78a, 78b on the other side of the long piece l and the mounting holes 79a, 79b on the other side of the short piece s are formed on this L-shaped mounting plate 7.
This is for attaching the WD type connector 71 to 3. FIG. 12a shows an L-shaped mounting plate 73 attached to the disconnection part mounting plate 72 for the small capacity unit main body 32 .
Figure b shows the disconnection part mounting plate 72 for the large-capacity unit main body 33 .
This figure shows the state in which the L-shaped mounting plate 73 is attached. In this case, for small capacity, the long piece 1 of the L-shaped mounting plate 73 is attached to the disconnection part mounting plate 72 by bolts, etc., and for the large capacity, the short piece s of the L-shaped mounting plate 73 is bolted to the disconnection part mounting plate 72. It can be attached with a stopper, etc. Figure 13a shows the small capacity unit main body 32 and the WD type connector 71 attached correspondingly.
Figure b shows the large capacity unit main body 33 and the corresponding WD
This shows the connection with a type connector 71. If the WD type connector 71 is installed using the above-mentioned method, the installation position of the WD type connector 71 can be adjusted appropriately depending on the thickness of the load cable (if a small capacity load cable 60 is used, it can be moved closer to the wiring processing chamber 55). , when using the large-capacity load cable 65, it is placed in the unit chamber 31 away from the wiring processing chamber 55.
can be varied in two stages (to different positions along the width direction). Therefore, even in the case of such an embodiment, effects similar to those of the above-mentioned embodiment can be obtained. Also, with this configuration, the WD type connector 71
When installing the small-capacity unit main body 32 and the large-capacity unit main body 33 , it is not necessary to perform installation work on the shelf board 54 etc. in the distribution box 53 in separate positions, and the small-capacity unit main body 32 can be stored. The unit room used to be replaced with a large-capacity unit body 33
Changes can be made easily, such as when storing. The above-mentioned opening 74 is an opening for attaching the WC type connector 57, and depending on the use of the unit, the WC type connector 57 may or may not be necessary. 13a and 13b show the state in which the WC type connector 57 is not attached. Note that this invention is not limited to the embodiments described above. For example, in the embodiment described above, MD
Although we have explained the case where the attachment having the mounting part for the connector is configured in an L-shape, it is also possible to open the entire side of the case of the unit body on the wiring processing chamber side and make it correspond to this opening. A U-shaped attachment may be detachably attached to the case. Even with this configuration, the position of the vertical plate part (the position of the mounting part of the MD type detector) can be adjusted by arranging the U-shaped attachment so that the front and back sides of the vertical plate part are switched. It can be varied in two stages along the width direction of the chamber. In this case, the mounting positions of not only the MD type connector and WD type connector but also the MC type connector and WC type connector will be changed, but the same as when installing the WD type connector, the L If you use a shaped mounting plate etc.,
There is no need to change the disconnect mounting plate. As explained above, according to the present invention, an opening is provided in the side surface of the case of the unit main body on the wiring processing chamber side, and an attachment having a mounting portion is attached to the case in a manner corresponding to the opening. The first connector to which the load cable is connected is designed so that the attachment part can be detachably attached so that it can be placed at different positions along the width direction of the unit chamber depending on the capacity of the unit main body. Since the opening can be changed according to the arrangement of the attachment part of the attachment, the bending dimension of the load cable can be secured according to the thickness of the load cable, thereby eliminating waste for connecting the load cable. Therefore, it is possible to provide a closed switchboard that can effectively utilize the space inside the panel.

[Brief explanation of the drawing]

Figure 1 is a perspective view showing a multi-tiered closed switchboard;
Figures 2 and 3 are perspective views showing the conventional unit chamber and unit main body, Figure 4 is a plan view showing the unit body shown in Figure 3 housed in the unit room shown in Figure 2, and Figure 5 is a FIGS. 6a and 6b are front views showing the state in which the small capacity unit main body and the large capacity unit main body are housed in the unit room. Figures 7a and b are perspective views showing the case and attachments; Figures 8a and b are perspective views showing the case of the small-capacity unit main body and the case of the large-capacity unit main body; FIG. 9 is a front view showing a state in which a large capacity unit main body of a large case is housed in the unit chamber, and FIGS. Front view showing the state stored indoors, 1st
Figures 1 a and b are perspective views showing the disconnect section mounting plate and the L-shaped mounting plate, and Figure 12 a and b are the L-shaped mounting plates.
A perspective view showing the attachment of the type mounting plate to the small capacity unit body and the large capacity unit body, respectively. Figures 13a and 13b show the WD type connections corresponding to the small capacity unit body and the large capacity unit body, respectively. FIG. 3 is a perspective view showing how the device is attached. 31...Unit chamber, 32...Small capacity unit body, 33...Large capacity unit body, 34, 66
...Case, 35...Attachment, 44S...
...Support plate, 44T...Mounting plate, 47,68...
... Network section, 53 ... Distribution box, 55 ... Wiring processing room,
56, 72...Disconnection section mounting plate, 57...WC
type connector, 58, 63, 71...WD type connector,
60...Small capacity load cable, 61...MC type connector, 65...Large capacity load cable, 67...Large capacity electromagnetic contactor, 73...L type mounting plate.

Claims (1)

[Scope of Claims] 1. A unit main body to which electrical equipment is attached is removably housed in a unit chamber formed in a distribution box, and a load cable is housed in a wiring processing chamber formed adjacent to the unit chamber. is connected to the unit main body through a first connector to which the load cable is connected and a second connector to which the unit main body is connected, which is detachable from the first connector. In the closed power distribution board, an opening is provided in the side surface of the case of the unit main body on the side of the wiring processing chamber, and a mounting part for attaching the second connector to the case is provided in a manner corresponding to the opening. Depending on the capacity of the unit body,
The attachment part of the attachment can be detachably attached so that it is arranged at different positions along the width direction of the unit chamber, and when the capacity of the unit main body is large, the attachment part of the attachment can be installed at different positions along the width direction of the unit chamber. The second connector attached to the mounting portion and the first connector connected to the second connector through the opening are arranged toward the center in the width direction of the unit chamber. A closed power distribution board characterized by being configured to be placed close to the side. 2. A unit main body to which electrical equipment is attached is removably housed in a unit chamber formed in a distribution box, and a load cable is connected to a wiring processing chamber formed adjacent to the unit chamber. In a closed switchboard connected to the unit body through a first connector to be connected and a second connector to which the unit body is connected, the second connector can be connected to the first connector and the unit body can be connected to the closed switchboard. An opening is provided in the side surface of the wiring processing chamber side of the case of the unit main body, and an attachment having an attachment part for attaching the second connector to the case in a manner corresponding to the opening is attached to the unit main body. Depending on the capacity of
The attachment part of the attachment can be detachably attached so that it is arranged at different positions along the width direction of the unit chamber, and when the capacity of the unit main body is large, the attachment part of the attachment can be installed at different positions along the width direction of the unit chamber. The second connector attached to the mounting portion and the first connector connected to the second connector through the opening are arranged toward the center in the width direction of the unit chamber. A partition plate is provided between the unit chamber and the wiring processing chamber, and a mounting plate having two arms of different lengths formed in an L-shape is attached to the unit body. Depending on the capacity of the unit, one arm of the mounting plate is attached to the partition plate so as to face the unit body, and the first connector is attached to the one arm of the unit. A closed power distribution board, characterized in that it is configured to be attached so that it can be connected to and separated from the second connector in response to insertion and removal of the main body.