JPH0241250B2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a wiring pit provided on a floor surface and equipped with a wiring structure used for connecting cables housed inside the pit to various external communication terminal devices. Conventionally, in offices, factories, etc., gutters (pits) have been installed under floors and used primarily for drainage. However, in recent years, the computerization of work content in offices, factories, etc. has been promoted, and computers and other communication terminal devices have come into use, and the cables used to operate such communication terminal devices are often stored in pits under the floor. The cable is now connected to the device. However, when pulling out such a cable from a wiring pit, there has been a demand for a wiring pit that allows the cable to be easily pulled out without spoiling the appearance of the pulled-out portion.

[Conventional technology]

Conventionally, this type of wiring pit 1, as shown in FIG. A wire passage hole 4' is formed in the side edge of the pit body 1' surrounded by the edge frame 3, and the wire passage hole body 4 is fitted and fixed into the wire passage hole 4'.
The boundary portion 5 between the floor portion 2 and the wiring hole main body 4 is generally made at a specified interval so that the wiring pit 1 can be easily inserted and removed from the floor portion 2, and without creating any unnecessary gaps. ing. As shown in FIG. 2, the conventional wire hole main body 4 is composed of a pedestal 6 molded by die-casting or the like, and a cover 7 that is fitted and attached to the pedestal 6 from above. A flange 8 was formed protruding from its outer periphery. Furthermore, this flange 8 was attached to the bottom plate 10 below the finishing material 9 with fasteners such as bolts 11.

[Problem to be solved by the invention]

However, the wire passage hole main body 4 according to the conventional example
The wiring pit having the above-mentioned structure had the following drawbacks. In other words, because fasteners such as bolts 11 were used when attaching the wire hole body 4 to the pit body 1', the fitting position of the edge frame 3 and the wire hole body 4 may be distorted due to stress during tightening. It has the disadvantage that it is easily misaligned and the wire passage hole main body 4 crosses the boundary portion 5 and protrudes toward the floor portion 2 side. The pit body 1' is formed by laying a finishing material 9 on the bottom plate 10 supported by the edge frame 3, but the finishing material 9 is generally plastic tiles (hereinafter referred to as "P tiles"), carpet, or There are various materials such as wood plywood, and these boards have different thicknesses. Therefore, depending on the type of finishing material 9, it is necessary to manufacture a plurality of separate wire passing welding pin insertion holes, or to prepare wire passing holes in advance. The dimensions of the main body 4 are made deep to suit the finishing material 9 having the largest thickness, and the dimensions are adjusted by interposing a spacer between the flange 8 and the bottom plate 10 depending on the type of the finishing material 9. I had to. The present invention has been made in order to eliminate the above-mentioned drawbacks, and makes it possible to accurately fix the wire passage hole main body 4 without the need for special fasteners such as bolts, and to It is an object of the present invention to provide a wiring pit that improves the versatility of a main body 4 and reduces manufacturing costs.

[Means to solve the problem]

The above purpose is to connect various cables Q to the outside through wire passage holes 12a opened at the side edge of the pit body 12', which is formed by laying the floor finishing material 15 on the bottom plate 16 supported by the edge frame 13. In the wiring pit formed by fitting and fixing the wire passage hole body 14 to be pulled out, the pit body 1 is provided on both outer sides of the front end of the wire passage hole body 14.
A plurality of mooring protrusions 33 are provided in the thickness direction to protrude from the edge frame 13 of 2' and are placed on the central flange 13b that supports the four circumferences of the bottom plate 16. A plurality of steps are formed in contact with the peripheral edge of the opening 17 of the wire passage hole body 14, and the wire passage hole body 14 is fitted and held in the wire passage hole 12a by the mooring protrusion 33 and the steps.
This is achieved by providing a wiring pit which is fixed to the bottom plate 16 by a welding pin 32 which is vertically disposed from the bottom plate and penetrates the welding pin insertion hole 34 of the bottom plate 16.

[Effect]

Based on the above structure, the wire passage main body 14 of the present invention is held by placing the mooring protrusion 33 on the center flange 13b of the edge frame 13 and placing the step on the periphery of the opening 17 of the bottom plate 16. Ru. The installation height of the wiring hole body 14 depends on the position of the mooring protrusion 33,
It is uniquely determined by the height of the center flange 13b of the edge frame 13, and the installation height of the bottom plate 16 is also determined by the height position of the center flange 13b. Therefore, edge frames 13 with different heights of the center flanges 13b are used, and the center flanges 13b of the edge frames 13 are
By placing any one of a plurality of mooring protrusions 33 formed on the top, the installation height of the bottom plate 16 can be changed even if the same wire hole main body 14 is used. As a result, one type of wire passage main body 14 can be used for a plurality of finishing materials 15 having different thicknesses. Further, the wire passage hole main body 14 is fixed to the bottom plate 16 by passing the welding pin 32 of the wire passage hole main body 14 into the welding pin insertion hole 34 of the bottom plate 16 and welding the tip. By passing the welding pin 32 through the welding pin insertion hole 34, displacement of the wire passage hole body 14 is effectively prevented, and the mooring protrusion 33 is inserted into the wire passage hole body 1.
4 is formed at the front end of the edge frame 13.
Since the wiring hole body 14 comes into contact with the back surface of the wiring pit 12, it is completely prevented that the wiring hole body 14 crosses the boundary of the wiring pit 12 and protrudes toward the floor side. Furthermore, as described above, when fixing the wire passage main body 14, which is held at different installation heights depending on the thickness of the finishing material 15, the welding pin can be used by easily cutting off unnecessary parts. Since it is possible to do this, the versatility of the wire passage main body 14 is further improved.

【Example】

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 3 is a partially cutaway external perspective view of the wiring pit according to the present invention. A groove-shaped pit is dug in the floor of the room, and a plurality of wiring pits 12 are provided therein.
The wire passage hole body 14 is fitted and fixed into a wire passage hole 12a opened at the side edge of the pit body 12' surrounded by the pit body 12'. This wiring hole body 14
The opening end is attached to the edge frame 13, the rear end is fitted and supported in an opening 17 provided in the bottom plate 16, and the cable Q stored inside the wiring pit 12 is inserted into the wiring hole body 14. is pulled out from an insertion hole provided on the surface of the Figure 4 shows this wiring hole body 1.
FIG. 4 is an external perspective view of No. 4. The wiring hole main body 14 is the pedestal 1
8 and a cover 19, and the cover 19 can be fitted onto and removed from the base 18. A side wall 21 is formed on the outer circumferential surface of the pedestal 18, excluding the front end, and extending vertically from the lower surface 20' of the flat plate section 20 on the upper surface. That is, step-like steps 22a, 22b, 22c are provided at the rear end of this side wall 21, and steps 23a, 23b,
23c are provided, and these steps 22a and 23a, 22b and 23b, and 22c and 23c are formed on the same plane. Next, Figure 5 shows the wiring hole body 14.
FIG. 2 is a perspective view of the exterior in a state in which it is disassembled into a pedestal 18 and a cover 19. The pedestal 18 is cut out in a U-shape in plan view with a cutout opening 24 that is open at the front end, and a cover 19 is fitted into the cutout opening 24 so that the covers 19 can be fitted into and removed from each other. A locking piece 25 is formed on the left and right inner walls of the notch opening 24, and a front end wall 26 of the flat plate portion 20 of the base 18 is provided on the front side. A plurality of circular recesses P are provided in the upper part of the front end wall 26 integrally with the cover 19, and a step 27 is provided in the lower part. The circular recess P indicates a reference position when drilling into the recess P with a drill or the like, and the cable Q is led out from here. Further, the step 27 serves to prevent dirt from entering when the cover 19 is fitted into the front end wall 26. A fixed shaft 28 is provided at the lower portions of both left and right sides of the front end wall 26 . This fixed shaft 2
8 and the locking piece 25 are used when the pedestal 18 and the cover 19 are fitted while being engaged with each other. Next, the cover 19 is provided with hook portions 30 on the lower left and right sides of the contact surface 29 that contacts the front end wall 26 of the pedestal 18, and is provided with engagement recesses 31 on the left and right sides of the front end. The locking portion 30 engages with the fixed shaft 28 of the base 18, the locking piece 25 of the base 18 is received in the engagement recess 31, and the cover 19 is fitted and locked into the base 18. Here, in the present invention, as shown in FIG.
Welding pins 32, 32 are integrally hung from the lower surface 20' of the flat plate part 20 at the rear end of the base 18, and mooring protrusions 33, 33, . . . are provided on both outer sides of the front end of the base 18. The welding pins 32, 32 are for locking the bottom plate 16. The lengths of the welding pins 32, 32 extend to near the side wall 21 of the pedestal 18, and are inserted into welding pin insertion holes 34, 34 drilled in the bottom plate 16, as shown in FIGS. 7 and 8. , bottom plate 16
It is cut by a soldering iron or the like at a height approximately equal to the lower surface of the board. A head 35 is formed at the tip to prevent the wire passage main body 14 from popping out upward. Further, the mooring protrusions 33, 33, . . . are projected along the longitudinal direction of the edge frame 13 as shown in FIG.
That is, the wire passage main body 14 is positioned by this edge frame 13 and is prevented from moving left and right. Further, a plurality of these mooring protrusions 33, 33, ... are provided in the vertical direction, and these are connected to the slits 37, 37.
It is separated by. This slit 37, 37
The center flange 13b of the edge frame 13, which will be described later, is protruded inward from the wiring pit 12 to form the bottom plate 1.
I support 6. The edge frame 13 has an E-shaped cross section, and has an upper flange 13a, a center flange 1
3b, and a lower flange 13c is formed to protrude laterally. The upper flange 13a and the lower flange 13c fit into the mooring protrusions 33, 33,...,
The central flange 13b supports the bottom plate 16. In this case, since the height of the bottom plate 16 changes depending on the thickness of the finishing material 15, various heights of the central flange 13b are made accordingly. The central flange 13b is allowed to protrude laterally from either 37 or 37. Furthermore, the edge frame 13
As shown in FIG. 6, the web portion thereof is slightly inclined with respect to the lower flange 13c. This is so that the wiring pit 12 can be easily inserted and removed from the floor, and to prevent dust from entering the inside. FIG. 10 shows a partial sectional view when the lower surface 20' of the flat plate portion 20 of the base 18 is supported by the bottom plate 16. This is a case where a thin finishing material, for example, a P tile of about 3 mm, is used as the finishing material 15, and at this time, the top surface of the bottom plate 16 is supported by being in contact with the top step of the pedestal 18. In this state, the edge frame 13 is fitted into the mooring protrusions 33, 33, . . . , and its central flange 13a supports the bottom plate 16. Therefore, by welding the welding pins 32, 32 and forming the head 31 at the tip, no unreasonable stress is applied to the base 18, and positioning in the vertical direction can be performed. 1st
FIG. 1 shows a case where a finishing material with the largest thickness, for example, wood plywood, is used as the finishing material 11b. In this case, as described above, the height of the central flange 13b is reduced by the increased thickness of the finishing material 15b. At this time, since the thickness of the finishing material 15b is not uniform, the finishing material 1
5b surface is slightly lower than the flat plate part 20 of the base 14, the lower surface of the bottom plate 16 and the center flange 13b or the upper surface of the bottom plate 16 and the finishing material 15
Adjustment can be made by interposing a spacer between the lower surface and the lower surface of b. Furthermore, as is clear from the drawing, the pedestal 18
A hollow part 36 is formed between the lower surface 20' of the flat plate part 20 at the rear end and the bottom plate 16, but even in this case, the head part 35 can be welded by heat without applying excessive stress to the pedestal 18.
can be formed, so the whole will not be distorted.

【Effect of the invention】

As is clear from the above explanation, according to the wiring pit according to the present invention, one type of wiring hole body can be used with a plurality of finishing materials of different thicknesses, thereby increasing the versatility of the wiring hole body. can be improved and manufacturing costs reduced. Moreover, since no special fastener is required when fixing the wire passage hole main body, work efficiency can be improved.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing the installation state of a conventional wiring pit, FIG. 2 is an enlarged perspective view of main parts, and FIG. 3 is a partially cutaway external perspective view of a wiring pit equipped with the wiring structure of the present invention. Figure 4 is a perspective view of the main body of the wiring hole, and Figure 5 is
The figure is a perspective view when the main body of the wire passage hole is disassembled, Figure 6 is a sectional view taken along line A-A in Figure 3, and Figure 7 is a cross-sectional view taken along line B-- in Figure 3.
B sectional view, FIG. 8 is a plan view showing the opening of the bottom plate,
Figure 9 is a perspective view showing the fitted state of the mooring protrusion and the edge frame, Figure 10 is a partial sectional view showing the case where a thin finishing material is used, and Figure 11 is a diagram showing the case where a thick finishing material is used. FIG. 12... Wiring pit, 12'... Pit body,
12a...Wiring hole, 13...Edge frame, 14...Wire hole body, 15...Finishing material, 16...Bottom plate, 32...
...Welding pin, 33...Mooring projection.

Claims (1)

[Scope of Claims] 1 Wiring holes for various cables to be drawn out to the outside of the pit body, which is formed by laying floor covering material on the bottom plate supported by the edge frame. In a wiring pit formed by fitting and fixing the main body, mooring protrusions are provided on both outer sides of the front end of the wiring hole main body to protrude from the edge frame of the pit main body and are placed on a central flange that supports the four circumferences of the bottom plate. A plurality of steps are provided protruding in the thickness direction, and a plurality of step-like steps are formed on the side wall, one of which abuts on the periphery of the opening of the bottom plate, and the mooring protrusion and the step fit into the wire passage hole. The wire passage hole body to be held is vertically disposed from the wire passage hole body,
A wiring pit fixed to the bottom plate with a welding pin that penetrates the welding pin insertion hole in the bottom plate.