JP3038069B2 - Bushings for floor panel wiring - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bushing disposed at an opening serving as a wire section formed on 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 out electric wires from under the floor is conventionally cut off a part of the floor panel 1 as shown in FIG.
0 as well as a cover plate 11 shown in FIG. The cover plate 11 shown in FIG. 11 (a) has a cutout 12 for a wire, and the cover plate shown in FIG. 11 (b) has a knockout portion 13 so that the knockout portion 13 is broken at the time of a wire. FIG. 3 (c) is used when no traffic is made.

[0003]

In this case, two types of cover plates must be used depending on whether or not a wire is to be connected. In the case shown in FIG. 11 (b), when changing from a state in which no traffic is performed to a state in which traffic is performed, the knockout portion 13 can be dealt with, but when returning to a state in which no traffic is performed, , Again requiring another cover plate. Therefore, a plurality of types of cover plates must be stored in order to respond to the change in the line connection state, which is not preferable because the cover plates may be lost during storage.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to make it possible to easily change the state between a line and a non-line without requiring a separate member. The present invention provides a bushing for a wiring part of a floor panel.

[0005]

According to the present invention, there is provided a bushing disposed on a wire passing through an opening in a floor panel, the bushing comprising a pair of rectangular shaped wires matching the rectangular wire. It is formed as connecting the flange with a pillar,
It is characterized in that a drawing hole is formed in one flange.

According to the present invention, the electric wire can be drawn out by arranging the flange having the draw-out hole so as to be located in the wire portion, and the flange without the draw-out hole is located in the wire portion by inverting. With such an arrangement, the wire section can be shielded.

[0007]

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

[0008] The bushing 2 is disposed in a wire section 10 formed as a rectangular opening in the floor panel 1 shown in FIG. 2 (a) or 2 (b). In the figure, reference numeral 15 denotes a step formed on the inner peripheral edge of the wire section 10. FIG.
2 shows a case where the engaging pin 16 is provided upright, and an engaging hole 26 in which the engaging pin 16 is fitted is provided in the flanges 21 and 22 of the bushing 2.

Now, when the electric wire is drawn out from the wire section 10, the flange 21 is turned upward so that the wire section 10
4A, the flange 21 is placed on the step 15 of the wire section 10 so that the
The extraction hole 23 formed on the surface is exposed. When the electric wire is not drawn out, the bushing 2 is turned upside down so that the flange 22 side is upward, and the bushing 2 is inserted into the wire section 10, and as shown in FIG. 1
5. Flange 22 is placed on 5.

[0010] Here, the passage portion 10 has a step portion 15 at its inner peripheral edge, and the flange 21 or the flange 22 of the bushing 2 is placed on the step portion 15. The flanges 22 and 21 positioned below as they are correspond to the step portion 15. However, since the wire portion 10 and the flanges 21 and 22 are not circular but have a rectangular shape, a rectangular wire is provided. By making the diagonal line of the part 10 (which is longer than each side of the wire section) and the side of the flange 21 substantially parallel,
The flanges 22 and 21 located on the lower side can pass through the wire section 10, so that a change in the wire state after the bushing 2 is arranged can be handled by reversing the bushing 2 and reattaching it. be able to.

When the length of the short side of the actual opening of the wire section 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, when the value of Z / Y is maximized, the flange 21 and 22 are most easily passed. Then, 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 wire section 10 is square. Further, in this case, the bushing 2 is allowed to have the pillar 20 having a size hatched in FIG.

FIG. 6 shows the movement when the bushing 2 is pulled out from the wire section 10, and as shown in FIG.
After the column 20 of the bushing 2 is brought into contact with the inner corner of the wire section 10 and the bushing 2 is tilted as shown in FIG. Two corners of the line 10
By pulling up the bushing 2 diagonally, as shown in FIG.
The bushing 2 can be taken out from the wire section 10.
In order to arrange the bushing 2 in the wire section 10, the above operation may be performed in reverse. The corners of the flanges 21 and 22 are shown in FIG.
The above operation can be performed more smoothly by rolling the bushing as shown in FIG. 1B, and the operation of drawing out the bushing 2 once attached from the wire section 10 can be easily performed.

FIG. 7 shows a state in which the electric wire 9 is drawn out on the floor by using the bushing 2 having the prismatic column 20. FIG.
Is shown. As shown in FIG. 9, the post 20 serves only to connect the flanges 21 and 22 at both ends, instead of passing the electric wire 9 through the post 20 with the post 20 being hollow. You may make it draw out. In this case, since the size of the drawing hole 23 is not restricted by the size of the column 20 whose size is limited as described above, more wires 9 can be drawn out.

[0014]

As described above, according to the present invention, the electric wire can be pulled out by arranging the flange having the draw-out hole so as to be located at the communication line portion. By arranging it so that it is located in the line part, it is possible to shield the line part, and it is reversible without requiring a separate member to change between the line state and the non-line state. It can respond.

[Brief description of the drawings]

FIG. 1 is a perspective view of one embodiment.

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

FIG. 3 is a perspective view of another example.

4 (a) and 4 (b) are perspective views showing an arrangement state corresponding to a wired state and a non-wired state.

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

FIGS. 6A, 6B, and 6C are cross-sectional views showing the operation of pulling out a bushing.

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

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

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

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

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

[Explanation of symbols]

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

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) H02G 3/00

Claims (1)

(57) [Claims] 1. A bushing disposed on a wire section opened to a floor panel, wherein the bushing is formed by connecting a pair of rectangular flanges that match the rectangular wire section with a support. A bushing for a wire section of a floor panel, wherein a drawer hole is formed in one flange.