JP2002223515A - Wiring box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To overcome the problem of troublesome works in which a wiring box is often used for connecting a wiring cover pipe when a building or the like is wired electrically, an insertion hole is formed to the connecting section of the wiring cover pipe in the wiring box, the wiring cover pipe in which a connector is installed at an end section is inserted into the inserting hole and a nut member is screwed and clamped on the inside of the box have been compelled. SOLUTION: Insertion sections 5, formed to the sidewalls 4 of a box body 2, are formed into a notched shape which is opened on one end sides of the side walls 4. The wiring cover pipe 111 to the box body 2 can be mounted in lateral fitting along the notched directions of the inserting sections 5. Accordingly, the connector and the nut member which have conventionally been essential are made unnecessary, and works are facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiring box.

[0002]

2. Description of the Related Art As shown in FIG. 4, a wiring box 101 may be used in a concrete structure 100 (building, condominium, etc.) to carry out electric wiring and signal line wiring. In FIG. 4, the concrete structure 100 is a multi-story building divided into a plurality of stories by a story floor 102. A suspended ceiling 104 will be provided below 102.

At the stage of constructing each floor 102, the above-mentioned wiring box 101 is embedded in the lower surface of the floor 102 in advance with the wiring cover tube 111 for inserting electric wiring or the like connected thereto. I do. FIG. 5 shows an example of a conventional wiring box 101. The wiring box 101 includes a box body 107 having a polygonal short cylindrical shape, and a lid 108 for closing at least one end of the box body 107. have. Both the box body 107 and the lid 108 are made of sheet metal.
It is detachable from the box body 107.

Also, each side wall 110 of the box body 107
Is provided with an insertion hole 112 for coupling a wiring cover tube 111 generally called a CD tube. The diameter of the insertion hole 112 is formed to a size that allows the male screw side end 114 of the connector 113 attached to the end of the wiring cover tube 111 to be inserted. Therefore, the male screw 114 of the connector 113 is inserted into the insertion hole 1 of the box body 107.
12, the nut member 115 is screwed into the male screw 114 penetrating from the insertion hole 112 inside the box main body 107 and tightened, and then the end of the pipe cover tube 111 is inserted into the connector 113. The pipe cover tube 111 is connected to the box body 107.

[0005] In the box body 107, the insertion holes 112 are provided in all the side walls 110, so that wiring can be performed in any direction.

[0006]

In the above-mentioned conventional wiring box 101, the operation of connecting the pipe cover tube 111 to the box body 107 is performed by connecting the connector 1 to the box body 107 one by one.
13 is removed in advance, and the connector 113 is inserted into the insertion hole 1 of the box body 107.
12 and screwing the nut member 115 to the male screw 114, and then attaching a connector 113 to the pipe cover tube 111 requires a complicated procedure.

[0007] Therefore, the working efficiency is very poor. In addition, since the inside of the box body 107 is narrow, it is difficult to screw the nut member 115. In particular, when one wiring box 101 is attached to a plurality of connectors, the inside of the box body 107 becomes narrower. The work becomes difficult and causes an increase in the number of work steps. Needless to say, one wiring cover tube 11
Since one connector 113 and one nut member 115 are required to connect the two, there is also a problem that the cost increases.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and enables a wiring box to be connected with a wiring cover tube easily and quickly and at a low cost. The purpose is to provide.

[0009]

In order to achieve the above object, the present invention takes the following measures. That is, the wiring box according to the present invention includes a box main body having a short cylindrical shape surrounded by a side wall, and a lid closing at least one end side of the box main body, and a wiring cover tube is provided on a side wall of the box main body. An insertion portion for attachment is provided, wherein the insertion portion is formed in a cutout shape opened to the same end so that the wiring cover tube can be inserted from one end of the side wall. It is characterized by having.

[0010] When the insertion portion is not a hole but has a cutout shape, the mounting of the wiring cover tube on the box body is performed in the cutout direction of the insertion portion (parallel to the cylinder axis direction of the box body). Along the direction perpendicular to the axis of the tube. In this case, if the opening width of the insertion portion is set to a size that can be engaged with the engagement groove provided on the outer peripheral surface of the wiring cover tube, the wiring cover tube can be prevented from falling out of the insertion portion. The connector and the nut member, which are conventional necessities, become unnecessary in the present invention.

Accordingly, the work of connecting the wiring cover tubes can be performed easily and quickly, and the cost can be reduced. In addition, in the plurality of side walls forming the box body, if the insertion portion provided in each is formed with an opening width adapted to a plurality of types of wiring cover tubes having different sizes, a general-purpose type for a plurality of types of wiring cover tubes can be used. You will be able to have sex.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 to 3, a wiring box 1 according to the present invention includes a box body 2 having a short tubular shape, and a lid 3 that closes at least one end of the box body 2. The box body 2 is made of sheet metal and has a regular octagonal planar shape, and its periphery is surrounded by a total of eight side walls 4 having the same width.

All side walls 4 are provided with insertion portions 5 for connecting the wiring cover tubes 111 respectively.
The insertion portion 5 has a cut-out shape penetrating (opening) to one end side (upper end in the illustrated example) of the side wall 4. Are provided via the runner section 7. The number, size, and strength of the runner portions 7 are appropriately set so that the blind lid 6 can be easily removed from the insertion portion 5 as needed. In the example shown in the figure, three portions are formed by spot welding.

The insertion portion 5 has an opening width corresponding to the outer diameter of the wiring cover tube 111. In particular,
C formed of a synthetic resin material as the wiring cover tube 111
In the case of what is called a D-tube, it has a substantially bellows shape in which a large number of circumferential grooves 10 are formed in the longitudinal direction with respect to the outer peripheral surface so that it can be bent at an arbitrary position in the longitudinal direction. The width of the opening of the insertion portion 5 is smaller than the diameter of the outer peripheral surface of the wiring cover tube 111 and the outer diameter at the position of the groove 10 (so that the wiring cover tube 111 can be engaged with the insertion portion 5 using the plug 10). (The inner diameter of the groove).

In the present invention, as shown in FIG. 3B, the groove 10 provided on the outer peripheral surface of the wiring cover tube 111 is positioned at an appropriate position near the end toward the wiring box 1. The groove 10 constitutes an engagement groove, and is engaged with the engagement groove so that the opening edge of the insertion portion 4 in the box body 2 is cut into the engagement groove.
1 can be made in a state in which insertion and removal in the longitudinal direction cannot be performed. That is, in the case of the prior art, since the insertion portion 5 is a hole penetrating the side wall, the hole diameter of the insertion portion 5 must necessarily be larger than the outer diameter of the wiring cover tube 111. Although the connector is indispensable to prevent the insertion of the wiring cover, since the insertion portion 5 according to the present embodiment is configured as a cutout opening to the upper end of the box main body 2, the wiring cover is formed from the upper end side of the box main body 2. Groove (engaging groove) 1 of the pipe 111 while inserting the pipe 111
By engaging the opening edge of the insertion portion 5 with 0, it is possible to prevent removal even without a connector.

It is to be noted that the provision of such a groove 10 over the entire length in the longitudinal direction in the wiring cover tube 111 is not an essential component of the present invention, and at least one groove 10 is provided on the outer peripheral surface near the end. It suffices if an engagement groove is provided. There are several types of insertion portions 5 having different opening widths, and each side wall 4 can correspond to (engage with) a wiring cover tube 111 having a different size. The side wall 4 has a cylinder inward from its lower end (not shown).
There is at least one (or all of them) provided with a mounting tongue 12 protruding outward from the cylinder.

The mounting tongue 12 is a portion used for inserting nails, screws 16 and the like when the box body 2 is fixed to the formwork 15 at the time of concrete casting. At least one (or all) tongue pieces 17 are provided on the side wall 4 and project upward from the upper end thereof. When the lid 3 is attached to the box body 2, the connecting tongue 17 is inserted into an engagement hole 22 formed in the lid 3 for positioning and preventing rattling.
It acts as a reinforcement for engagement and a stopper.

The lid 3 is also made of sheet metal, and is formed in a similar octagon, which is slightly larger than the plane shape of the box body 2, and curtain plates 21 and 23 are vertically provided on the outer peripheral portion. , And can be removably fitted to one end (upper end) of the box body 2. The curtain plates 21 and 23 of the lid body 3 are disposed at octagonal corners, and those disposed between them (corresponding to the widthwise central portion of the side wall 4; 23), of which a curtain plate 21 disposed at a corner portion is provided.
Is fitted to the outside of the corner of the box body 2 when the box body 2 is covered, and the cover plate 23 is arranged to be slightly inwardly inserted and inserted into the insertion portion 5 of the box body 2. It is disposed substantially flush with the side wall 4.

The cover plate 23 covers the insertion portion 5 together with the blind cover 6, and the lower end thereof is cut in an arc shape along the upper arc of the blind plate 6. Therefore, in the box body 2, the blind cover 6 is removed from the insertion portion 5 at the position where the pipe cover tube 111 is joined, the pipe cover tube 111 is fitted therein, and the lid 3 is then attached to the box body 2
When it is covered with the pipe cover pipe 1
The groove 10 is the same as the groove 10 (the same as the engagement groove that is cut into the insertion portion 5) (see FIG. 3).

With the cover plate 23, the pipe cover tube 1
11 does not move in the notch direction of the insertion portion 5, making it more reliable to prevent the box body 2 from being pulled out.
When concrete is poured around the wiring box 1, the concrete is prevented from entering the inside of the box body 2 from the insertion portion 5. The lid 3
In the center of the upper surface of the pipe, the pipe thread 25
Is provided, and is appropriately used when the installation of the suspension member in the box body 2 is required.

In the construction of the wiring box 1 according to the present invention having such a structure, when constructing a concrete structure (see reference numeral 100 in FIG. 4), as shown in FIG.
2 and the box body 2 is fixed at a predetermined position with respect to a formwork 15 for supporting concrete casting.
The blind cover 6 is peeled off from the insertion portion 5 at the position where is connected, and the pipe cover tube 111 is fitted into the blind cover 6. Then, the cover 3 is put on the box body 2. Then, the tongue piece 17 on the side of the box main body 2 protruding from the connecting hole 22 of the lid 3 is turned over, or the tongue 17 is twisted while standing up, so that the lid 3 is attached to the box main body 2. Is fixed.

In this state, the groove 1 of the pipe cover tube 111
0 (engaging groove) is in the engaged state by the insertion portion 5 of the box body 2 and has already been prevented from being removed, so that a conventional connector or nut member (see reference numerals 113 and 115 in FIG. 5) is necessary. Of course, there is no need for complicated work such as screwing the nut member. Therefore, after this, the concrete can be cast on the upper surface side of the formwork 15 as it is. Incidentally, the present invention is not limited to the above-described embodiment, and can be appropriately changed according to the embodiment.

For example, the planar shapes of the box body 2 and the lid 3 are not limited to regular octagons, but may be regular hexagons, squares, circles, or the like. Further, the material for forming the box body 2 and the lid 3 may be, for example, resin. The insertion portion 5 provided in the box main body 2 may be formed in a cutout shape penetrating to the lower end side of the box main body 2.

[0024]

As is clear from the above description, in the wiring box according to the present invention, the insertion portion provided on the side wall of the box body has a cutout shape open to one end of the side wall. The wiring cover tube can be inserted from one end of the side wall and attached to the box body. For this reason, it is possible to engage the outer surface of the wiring cover tube with the opening edge of the insertion portion to prevent the wiring cover tube from being pulled out without the necessity of the connector, which was a necessity in the past. It can be performed easily and quickly, and cost can be reduced.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing one embodiment of a wiring box according to the present invention.

FIG. 2 is a side view showing an operation procedure for connecting a wiring cover tube to the wiring box of FIG. 1;

FIG. 3A is a side view showing a state after the connection of the wiring cover tubes, which is the next stage of FIG. 2, and FIG.
FIG. 3 is a plan cross-sectional view of an engagement portion between a wiring box and a pipe cover tube.

FIG. 4 is a side sectional view of a concrete structure showing an example of use in a conventional wiring box.

FIG. 5 is an exploded perspective view showing a conventional wiring box.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wiring box 2 Box main body 3 Lid 4 Side wall 5 Insertion part 10 Groove (engaging groove) 111 Wiring cover tube

Continued on the front page F term (reference) 4E352 AA02 AA05 AA12 AA14 BB05 BB10 CC04 CC12 CC13 CC22 CC53 DD05 DR03 DR09 DR14 DR19 DR22 DR25 DR34 DR43 FF01 GG12 GG17 5G357 DA06 DB01 DC02 DC03 DD01 DD05 DD10 DG05 5G361 AA04 AC02

Claims (3)

[Claims] 1. A box body (2) having a short cylindrical shape surrounded by a side wall (4), and a lid (3) closing at least one end of the box body (2). Wiring cover tube (111) on the side wall (4) of the box body (2)
In the wiring box provided with the insertion part (5) for attaching the wiring box, the insertion part (5) is configured to insert the wiring cover tube (111) from one end side of the side wall (4). A wiring box characterized by being formed in a cutout shape opened to the same end side. 2. The plug-in part (5) is provided with a wiring cover tube (1).
The wiring box according to claim 1, wherein the wiring box is formed with an opening width capable of engaging with an engagement groove provided on the outer peripheral surface of the outer peripheral surface of the wiring box. 3. A plurality of side walls (4) forming the box body (2), the insertion portions (5) provided respectively are provided with a plurality of types of wiring cover tubes (11) having different sizes.
The wiring box according to claim 1 or 2, wherein the wiring box is formed to have an opening width adapted to (1).