JPH05168129A - Bushing for wire passing part of floor panel - Google Patents

Abstract

PURPOSE:To realize simple state change between passing time of wire and non-passing time of wire without requiring an additional member. CONSTITUTION:The bushing 2 to be arranged at a wire passing part opened through a floor panel comprises a pair of flanges 21, 22 having rectangular profile matching with a rectangular wire passing part, and a support 20 for coupling them, wherein a lead out hole 23 is made through one flange 21.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bushing to be installed in an opening as a passage portion formed in a floor panel constituting a double floor.

[0002]

2. Description of the Related Art In a floor panel constituting a double floor, a portion for drawing an electric wire from under the floor is conventionally cut out by cutting a part of the floor panel 1 as shown in FIG.
0 is formed, and the cover plate 11 shown in FIG. 11 is arranged on the line portion 10. The cover plate 11 shown in FIG. 11 (a) is provided with a cutout 12 for wire passage, and the cover plate 11 shown in FIG. 11 (b) is provided with a knockout portion 13 so that the knockout portion 13 can be broken during passage. The one shown in Fig. 6 (c) is used when the line is not used.

[0003]

In this case, it is necessary to use two kinds of cover plates depending on whether the wiring is conducted or not. The one shown in FIG. 11 (b) can be dealt with by breaking the knock-out portion 13 when changing from the state where no wiring is performed to the state where wiring is performed, but when returning to the state where no wiring is performed. , Still need another cover plate. Therefore, a plurality of types of cover plates must be stored in order to respond to a change in the line state, and this is not preferable because it may result in loss during storage.

The present invention has been made in view of the above points, and an object thereof is to easily change the state between the time when a wire is running and the time when a wire is not running, without requiring a separate member. The purpose is to provide a bushing for the wiring part of the floor panel.

[0005]

DISCLOSURE OF THE INVENTION The present invention, however, is a bushing arranged in a wire passage portion opened in a floor panel, and has a pair of rectangular shapes matching the rectangular wire passage portion. Formed as connecting flanges with columns,
It is characterized in that a pull-out hole is formed in one of the flanges.

According to the present invention, the electric wire can be drawn out by arranging the flange having the drawing hole so as to be located in the passing wire portion, and by inverting the electric wire, the flange without the drawing hole is located in the passing wire portion. By arranging in this way, the passage portion can be blocked.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the illustrated embodiments. As shown in FIG. 1, a bushing 2 is provided with rectangular flanges 21 and 22 of the same shape and size on both ends of a column 20. The column 20 having both ends connected to the central portions of both the flanges 21 and 22 has a hollow inside and communicates with a lead-out hole 23 formed in the center of the flange 21 side, and further has a lead-in hole 24 on the peripheral surface. is doing.

The bushing 2 is arranged in a passage portion 10 formed as a rectangular opening in the floor panel 1 shown in FIG. 2 (a) or 2 (b). Reference numeral 15 in the figure denotes a step portion formed on the inner peripheral edge of the passage portion 10. FIG. 3 shows step 15
It shows the case where the engagement pin 16 is provided upright and the flanges 21 and 22 of the bushing 2 are provided with an engagement hole 26 into which the engagement pin 16 is fitted.

When the electric wire is pulled out from the wire passing portion 10, the wire passing portion 10 is arranged with the flange 21 side facing upward.
Insert the bushing 2 into the flange 21 and place the flange 21 on the stepped portion 15 of the wire passage portion 10 as shown in FIG.
The extraction hole 23 formed on the surface is exposed. When the wire is not pulled out, the bushing 2 is turned upside down so that the flange 22 side faces up, and the bushing 2 is inserted into the wire passage portion 10. As shown in FIG. 4 (b), the step portion of the wire passage portion 10 is inserted. 1
The flange 22 is placed on top of 5.

Here, the wire passage portion 10 has the step portion 15 at the inner peripheral edge thereof, and since the flange 21 or the flange 22 of the bushing 2 is placed on the step portion 15, when the bushing 2 is arranged on the wire passage portion 10, As it is, the flanges 22 and 21 to be positioned below correspond to the step portion 15. However, since the passage portion 10 and the flanges 21 and 22 have a rectangular shape instead of a circular shape, the rectangular passage wire is formed. By making the diagonal line of the portion 10 (which is longer than each side of the line portion) and the side of the flange 21 substantially parallel,
The flanges 22 and 21 on the lower side can be passed through the wire passage portion 10. Therefore, the change of the wire passage state after the bushing 2 is arranged can be handled by reversing and re-installing the bushing 2. be able to.

When the length of the short side of the actual opening of the passage portion 10 is X, the length of the long side is Y, and the diagonal length is Z, the maximum length of the sides of the flanges 21 and 22 of the bushing 2 is shown. L is X ≦ Y
<L <Z, but the maximum length L is the length Y of the long side.
Since it is only slightly larger, the flanges 21 and 22 are most easily passed through when the Z / Y value is set to be the largest. Since Z / Y = (X ² + Y ² ) ^1/2 / Y = (X ² + Y ² / Y ² ) ^1/2 = ((X / Y) ² +1) ^1/2 , X = Y At the time, that is, it is preferable that the opening of the passage portion 10 is square. Further, in this case, the bushing 2 is allowed to have the column 20 having a size hatched in FIG.

FIG. 6 shows the movement when the bushing 2 is pulled out from the wire passage portion 10, and as shown in FIG.
After the pillars 20 of the raised bushing 2 are brought into contact with the inner corners of the passage portion 10, if the bushing 2 is tilted, the flange 22 located below the floor panel 1 of the bushing 2 is tilted as shown in FIG. The two corners of the line 10
It can be pulled out further, and after that, as shown in (c) of the figure, by pulling the bushing 2 diagonally,
The bushing 2 can be taken out from the line portion 10.
In order to dispose the bushing 2 on the passage portion 10, the reverse operation described above may be performed. The corners of the flanges 21 and 22 are shown in FIG.
In addition to smoothing the above-mentioned work by rolling the bushing 2 as shown in FIG. 3, the work of pulling out the bushing 2 once attached from the wire passing portion 10 can be easily carried out.

FIG. 7 shows a state in which the electric wire 9 is pulled out onto the floor by using the bushing 2 having the square columnar support 20, and FIG. 8 shows the protective cover 4 at the pull-out hole 23.
The one with the attached is shown. Instead of passing the electric wire 9 through the pillar 20 by making the pillar 20 hollow, as shown in FIG. 9, the pillar 20 is only responsible for connecting the flanges 21 and 22 at both ends, and the electric wire 9 is connected along the pillar 20. It may be pulled out. In this case, since the size of the lead-out hole 23 is not restricted by the size of the column 20 whose size is limited as described above, more electric wires 9 can be drawn out.

[0014]

As described above, in the present invention, the electric wire can be drawn out by arranging the flange having the lead-out hole so as to be positioned in the wire passage portion, and by reversing the electric wire, the flange without the lead-out hole can be inserted. By arranging it so that it is located in the line part, it is possible to shield the line part, and reversibly without requiring a separate member to change between the line state and the non-line state. It is something that can be dealt with.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment.

2 (a) and 2 (b) are perspective views each showing a wire passage portion of a floor panel.

FIG. 3 is a perspective view of another example.

4 (a) and 4 (b) are perspective views showing a disposition state corresponding to a passing state and a non-passing state.

FIG. 5 is an explanatory diagram of a relationship between a wire passage portion and a bushing.

6 (a), (b) and (c) are cross-sectional views showing the operation of pulling out the bushing.

7A is a perspective view, and FIG. 7B is a cross-sectional view showing a passing state.

8A is a perspective view of another example, and FIG. 8B is a sectional view.

9A is a perspective view of still another example, and FIG. 9B is a sectional view.

FIG. 10 is a perspective view showing a wire passage portion of a conventional floor panel.

11 (a), (b) and (c) are perspective views of conventionally used cover plates, respectively.

[Explanation of symbols]

 2 Bushing 20 Strut 21 Flange 22 Flange 23 Draw-out hole

Claims (1)

[Claims] 1. A bushing arranged in a wire passage portion opened to a floor panel, wherein the bushing is formed by connecting a pair of rectangular flanges matching the rectangular wire passage portion with columns. And a bushing for a passage portion of a floor panel, characterized in that one flange has an extraction hole formed therein.