JPH0357049Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Technical field] The present invention relates to a distribution board.

[Background Art] FIG. 4 shows a distribution board A, in which a large number of branch breakers 3 are arranged on one side of a case body 1. The cover 2 covers the opening surface of the case body 1, and a handle 3a of each breaker 3 projects upward from the top surface of the cover 2 through a handle hole 11. Although a predetermined number of branch breakers 3 can be provided in the distribution board A, not all of them are necessarily used, and the handle holes 11 of the cover 2 where the branch breakers 3 are not used end up being open. Therefore, a blank cap 10 is generally fitted to close the open handle hole 11. Conventionally, the thickness of the cover 2 differs depending on the material of the cover 2 (plastic or iron), and therefore two types of blank caps 10 have been prepared and used differently, which has been a problem.

[Purpose of the invention] The present invention has been provided in view of the above-mentioned points, and even if the plate thickness differs depending on the material of the cover,
To provide a power distribution board which can be used in common with different types of blank caps and which is intended to prevent an engaging piece from being damaged when inserted into a handle hole of a cover of a blank cap.

[Disclosure of the invention] Hereinafter, embodiments of the invention will be described with reference to the drawings.
First, an overview of the distribution board A will be explained. FIG. 4 shows a perspective view of the distribution board A, in which a large number of branch breakers 3 are arranged on one side of the case body 1. The cover 2 covers the opening surface of the case body 1, and a handle 3a of each breaker 3 projects upward from the top surface of the cover 2 through a handle hole 11. FIG. 5 shows a perspective view of a cover formed from a molded product. By the way, depending on the area, it may be possible to install a so-called limiter on the distribution board A to cut off the main circuit when a predetermined power capacity is used. For this purpose, a space is provided in the distribution board A to accommodate this limiter. This space section is provided on the other side of the case body 1,
A pedestal-shaped limiter cover 6 is formed integrally with the cover 2 and protrudes upward in a portion of the cover 2 above the space portion. An opening 7 is provided in the center of the limiter cover 6 to expose the operating section of the limiter, and since limiters vary in size depending on the power type and manufacturer, the area around the opening 7 is Thin pieces 8 that can be easily cut are integrally formed.

Next, the blank cap 1 which is the gist of this invention
0 will be explained. As shown in FIG. 1, an elastic blank cap 10 made of, for example, synthetic resin has elastic engaging pieces 13 integrally hung from both sides of the lower surface of a flat top plate 12. As shown in FIG. An engaging protrusion 14 in the form of a protrusion is integrally provided in the width direction from the top plate 12 on the outer surface of the engaging piece 13, and
A protrusion 15 is integrally provided at the lower end of the outer surface of the engagement piece 13 over the entire length in the width direction. Here, as will be described later, the top plate 12 of the blank cap 10 is
The periphery of the handle hole 11 is an engaging portion 16, and the lower surface of the engaging portion 16 presses or engages the upper surface of the opening edge of the handle hole 11 of the cover 2.

The thickness of the cover 2 varies depending on whether the material of the cover 2 is plastic or iron (thick or thin). If the cover 2 is made of plastic, it will be thicker. In this case, as shown in FIG. 2, an inclined surface 17 is formed on the upper surface of the opening edge of the handle hole 11 of the cover 2 for escape of the handle.
The engagement projections 14 of the flat engagement pieces 13 are brought into contact with each other to prevent transient deflection of the flat engagement pieces 13, thereby preventing the engagement pieces 13 from being damaged.

That is, when the engaging piece 13 of the blank cap 10, which is formed with a spacing slightly larger than the size of the handle hole 11, is inserted into the handle hole 11, the protrusion 15 of the engaging piece 13 will fit into the opening of the handle hole 11. It hits the edge and bends inward. This engaging piece 13 is bent considerably inward by being pushed into the handle hole 11 of the blank cap 10, but when it is pushed in to a certain extent, the engaging protrusion 14 formed on the engaging piece 13 of the blank cap 10 is bent to the side of the cover 2. It comes into contact with the surface 17, and this engaging protrusion 14 acts as a stopper,
This prevents the engagement piece 13 from being bent excessively. Then, at a position where the engagement protrusion 13 touches the inclined surface 17, the protrusion 15 passes through the handle hole 11 and returns to its original position. By this return, the opening edge of the cover 2 is held between the protrusion 15 of the engagement piece 13 and the engagement part 16,
The blank cap 10 will be held by the cover 2.

FIG. 3 shows a case in which the cover 2 is made of iron. In this case, the plate thickness is reduced, and the cover 2 is held between the engagement protrusion 14 and the engagement portion 16 of the blank cap 10.

[Effect of idea]

As described above, the present invention is a distribution board in which a plurality of branch breakers are arranged inside a case body, the operating handles of the branch breakers are inserted through the handle holes, and the case body is covered with a cover. , a blank cap is formed that closes the handle hole of the cover when a certain branch breaker is not installed, an engaging portion is formed on the peripheral edge of the blank cap to engage the upper surface of the opening edge of the handle hole, and the blank cap is closed. A flat engaging piece with elasticity is provided vertically from the lower surface of both sides, and when the cover is thick, the engaging piece engages with the lower surface of the opening edge of the handle hole on the outer surface of the lower end of the engaging piece. A protrusion is provided to hold the cover between the blank cap and the blank cap, and when the protrusion of the blank cap is inserted into the handle hole, it comes into contact with the slope formed on the upper surface of the opening edge of the handle hole, and the engagement piece moves smoothly. In addition to preventing excessive deflection, when the thickness of the cover is thin, an engaging protrusion for sandwiching the engaging part of the blank cap and the cover is provided protrudingly on the engaging piece between the engaging part and the protruding part. Therefore, when attaching a blank cap to the handle hole of a thick cover, when the engaging piece of the blank cap is pushed into the handle hole, the engaging piece will bend greatly inward due to the protrusion, but the engaging protrusion will The cover is held between the protrusion that comes into contact with the slope of the handle hole and is inserted through the handle hole, and the engagement part.In this way, the engagement protrusion acts as a stopper, and the engagement piece It is possible to prevent damage to the flat engagement piece by preventing transient deflection of the cover, and if the cover is thin, the cover can be held between the engagement protrusion and the engagement part. ,
Therefore, one type of blank cap can be used for both thick and thin plate types.

[Brief explanation of the drawing]

1A to 1C are a plan view, a side view, and a front view of a blank cap according to an embodiment of the present invention, FIG. 3 is a sectional view of the same as above when the plate thickness is thin, FIG. 4 is a perspective view of the distribution board same as the above, and FIG. 5 is a perspective view of the cover same as the above. 1 is a case body, 2 is a cover, 3 is a branch breaker, 10 is a blank cap, 11 is a handle hole, 12 is a top plate, 13 is an engagement piece, 14 is an engagement protrusion, 15 is a protrusion, 16 is an engagement Show part.

Claims (1)

[Scope of utility model registration request] In a distribution board in which multiple branch breakers are arranged in a case body, the operation handles of the branch breakers are inserted through the handle holes, and the case body is covered with a cover, some branch breakers are not installed. At the same time, a blank cap is formed to close the handle hole of the cover, and an engaging part is formed on the peripheral edge of the blank cap to engage the upper surface of the opening edge of the handle hole. An engaging piece is provided vertically on the outer surface of the lower end of the engaging piece, and when the cover is thick, it engages with the lower surface of the opening edge of the handle hole and clamps the cover with the engaging part. A protrusion is provided so that when the protrusion of the blank cap is inserted into the handle hole, it comes into contact with the slope formed on the upper surface of the opening edge of the handle hole to prevent transient deflection of the engaging piece, and also prevents the cover from bending. 1. A power distribution board characterized in that when the plate thickness of the blank cap is thin, an engaging protrusion for sandwiching the engaging part of the blank cap and the cover is provided in a protruding manner on an engaging piece between the engaging part and the protruding part.