JPH0739303Y2 - Outlet mounting device for system floor - Google Patents

Description

[Detailed Description of the Invention] [Industrial application] The present invention relates to an outlet mounting device for a system floor, and more specifically, on an indoor floor surface of an office building or the like, with a space between the floor surface and the floor surface. In a so-called system floor, where a heavy floor is provided and the space between this double floor and the original floor surface is used as a wiring space for power wiring, information wiring, etc., a conventional floor duct is mounted on the double floor. The present invention relates to a mounting device for mounting an outlet such as a power outlet and a telephone outlet.

[Conventional technology]

2. Description of the Related Art Conventionally, a so-called floor duct structure has been generally adopted as an indoor wiring structure of an office building or the like.

FIG. 11 shows an example of the floor duct. A duct D made of synthetic resin or metal is embedded in a structural material C, such as concrete or mortar, that constitutes the floor surface, and floor finishing work is performed with a normal floor material F or the like.
Power supply wiring, telephone wiring, etc. are passed through the floor duct D, and an outlet O is attached on the floor surface at a wiring outlet provided on the upper surface of the floor duct D at a so-called insert I portion. As outlet O,
There are high-tension outlets for power outlets or low-tension outlets for weak current such as telephones and signals. The insert I is formed with a normal conduit internal thread portion f. Then, the male threaded portion m formed on the lower surface of the outlet O is directly screwed into the female threaded portion f of the insert I or is screwed through the joint pipe E as shown in the drawing to attach the outlet O to the duct D. It is fixed. The wiring is drawn into the inside of the outlet O from the floor duct D through the conduit female thread portion f and the male thread portion m of the outlet O.

Further, instead of the floor duct D as described above, a conduit is buried and installed, an outlet box is provided at each of the conduits, a floor plate is attached to the upper part of the outlet box, and the insert is attached to the floor plate. A so-called conduit pipe wiring structure in which the same internal thread portion f as I is formed is also employed. In the case of such a floor plate, a plurality of mounting screw holes may be formed in the floor plate in addition to the female screw portion f, and the outlet O may be screwed by using the mounting screw holes.

On the other hand, recently, a construction structure called a so-called system floor has been adopted as a floor surface structure of an office building or the like.

This system floor is a double floor by laying a floor block made of plastic or gypsum board on the floor made of concrete or the like and a floor block with carpet attached to the top of this floor block. The (system floor) is configured, and the wiring is passed through the space between the double floor and the original floor surface. With such a system floor, even after the indoor construction such as office is completed, you can freely change the indoor wiring by simply removing the double floor part and directly from the inside of the wiring equipment to the lower surface of the double floor. If you pass the wiring, the wiring will not be exposed to the outside at all and the construction structure will be extremely well-formed. Therefore, it has been widely adopted in office buildings and the like in which a large number of various electronic and electric devices are installed and the arrangement thereof is frequently changed.

[Problems to be solved by the device]

However, in the case of attaching a wiring device such as an outlet to the system floor as described above, there is a problem that the conventional outlet for the floor duct cannot be used and a connection device dedicated to the system floor must be used.

As mentioned above, in the system floor, there is no duct or insert for fixing the outlet between the double floor and the floor surface. Therefore, in the conventional system floor, the wiring equipment box is mounted on the floor surface under the double floor, and the wiring equipment is housed and mounted in this wiring equipment box. Therefore, it is necessary to manufacture a new wiring equipment box or wiring equipment having a completely different structure from the floor duct outlet. Since the specifications and structure of wiring equipment have various standards and requirements depending on the purpose of use and the type of electric wire, it is very difficult to develop and manufacture wiring equipment boxes and wiring equipment dedicated to the system floor as described above. It is time-consuming and costly to manufacture. In addition, the wiring equipment manufacturer and the contractor have to manufacture and store both the floor duct outlet and the system floor wiring equipment, which is very troublesome to store or manage. .

If the conventional outlet for floor datoku is directly attached to the double floor of the system floor, the above problems will be solved, so it would be good if the same female screw part as the insert of the floor duct could be formed on the double floor. As described above, as the material of the double floor of the floor, synthetic resin, gypsum board and the like are used, so that it is difficult to perform thread cutting, and it is not possible to form an internal thread portion similar to the insert. Therefore, in the system floor, the dedicated wiring box or wiring device as described above, which does not need to be processed with screw holes or the like in the double floor, is used.

Therefore, the problem of the present invention is to make it possible to directly install the outlets for floor ducts, which have been widely used in the past and have many types of them, directly on the double floor of the system floor, and to improve the efficiency of construction and An object of the present invention is to provide an outlet mounting device for a system floor that can reduce the construction cost.

[Means for Solving the Problems]

In order to solve the above problems, the system floor outlet mounting apparatus according to the present invention has a double floor with a space between the floor and the floor, and a system floor in which wiring is routed on the double floor. A device for mounting an outlet for a floor duct, which comprises a fixing plate for mounting the outlet and a fixing bracket for fixing and fixing the fixing plate to the double floor, and an upper surface of an electric wire outlet formed through the double floor. The fixing plate arranged at is formed with a wire lead-out hole, an outlet mounting screw portion, and a notch groove extending from the inner peripheral edge of the wire lead-out hole to the outer periphery. It is movable to the sandwiching piece that sandwiches the inner peripheral edge of it with the lower surface of the fixing plate, the mounting piece that is connected to the sandwiching piece and faces the fixing plate, and the cutout groove of the wire drawing hole. Locked threaded into mounting piece and a mounting screw for fixing by tightening the mounting piece to the fixing plate side.

As the fixing plate, one having a structure similar to that of the floor plate used in the above-described conventional conduit tube wiring structure or the like is basically used. Specifically, a wire-drawing hole is formed through a fixing plate made of a metal such as a steel plate or a synthetic resin and having a disk shape or a rectangular plate shape. Outlet mounting screws are formed at a plurality of locations outside the wire drawing hole. An internal thread similar to the insert of the floor duct is usually formed on the inner peripheral edge of the wire drawing hole.
When only the mounting screw portion is used, the female screw portion may not be formed in the wire drawing hole.

In addition, on the lower surface of the floor plate in the conventional conduit wiring structure, a tubular protrusion with a male screw for screwing and attaching to the outlet box was formed, but since the outlet box is not used on the system floor, No tubular protrusions are formed.

The fixing bracket is made of thin steel plate or other metal and is attached to the lower surface of the fixing plate so as to be movable from the inner peripheral side to the outer peripheral side. A piece is provided. Usually, the fixing plate can be securely fixed to the double floor if the fixing metal fittings and the sandwiching pieces are provided at two opposite locations, but the fixing metal fittings and the sandwiching pieces are provided at three or more locations. Good.

As a structure for movably attaching the fixing bracket from the inner peripheral side to the outer peripheral side of the fixing plate, at least from the position where the tip of the sandwiching piece is inside the outer peripheral edge of the fixing plate to the lower side of the outer peripheral edge. It is designed to move to the opposite position.

The sandwiching piece is provided in such a shape and arrangement that the inner peripheral edge of the wire outlet of the double floor to which the fixing plate is attached can be sandwiched with the lower surface of the fixing plate. In particular, the area where the sandwiching piece hits the double floor is set so that sufficient holding and fixing force can be exerted on the double floor.

As a mounting structure of the fixing bracket to the fixing plate, the fixing plate is formed with a notch groove extending from the inner peripheral edge of the wire drawing hole to the outer periphery. The fixing fitting includes the sandwiching piece, the mounting piece, and the mounting screw. The mounting piece is connected to the sandwiching piece, moves integrally with the sandwiching piece, and is arranged at a position facing the fixing plate. The mounting screw is movably locked in the cutout groove of the wire drawing hole. Specifically, if the width of the notch groove is set to be slightly wider than the diameter of the shaft part of the mounting screw and slightly smaller than the diameter of the head part of the mounting screw, the mounting screw can move freely along the notch groove. At the same time, the head of the mounting screw is locked in the notch groove. The mounting screw is screwed into the mounting piece. Therefore, a screw hole is formed in the mounting piece.
If the mounting screw locked in the cutout groove of the wire drawing hole is screwed into the mounting piece, the mounting piece will be tightened and fixed to the fixing plate side, and the sandwiching piece will also move to the fixing plate side. Will be pinched.

[Action]

If it is possible to attach and fix the fixing plate provided with the mounting screw hole for the outlet and the wire drawing hole to the wire drawing outlet formed through the double floor of the system floor,
The outlet can be mounted and fixed on the fixing plate.

Therefore, in this invention, in order to attach and fix the fixing plate to the wire outlet of the double floor, a fixing metal fitting that is movable from the inner peripheral side to the outer peripheral side is attached to the lower surface of the fixing plate. The fixing fitting is provided with a sandwiching piece for sandwiching the inner peripheral edge of the wire outlet of the double floor with the lower surface of the fixing plate.

As described above, it is difficult to screw the double floor due to problems such as material strength.However, the inner peripheral edge of the wire drawing outlet is sandwiched between the lower surface of the fixing plate and the sandwiching piece. For example, the fixing plate can be securely and firmly fixed to the double floor without screwing the double floor.

If the fixing plate is attached and fixed to the double floor with the fixing bracket attached to the bottom surface of the fixing plate, the upper surface of the fixing plate to which the outlet is attached and the wire drawing hole are not affected at all. It can be freely mounted and fixed on the upper surface of the plate, and there will be no hindrance in wiring work.

Especially, since the mounting screw of the fixing metal fitting is locked in the notch groove connected to the wire drawing hole of the fixing plate, the fixing metal fitting including the mounting screw should be integrally attached to and detached from the fixing plate. You can That is, the mounting screw can be inserted into or taken out of the notch groove from the inner peripheral edge of the wire drawing hole while the mounting screw remains screwed into the mounting piece. When removing the fixing bracket from the fixing plate, it is not necessary to completely separate the mounting screw from the mounting piece.

As a result, it is possible to mount the fixing plate after disposing the fixing plate at the wire outlet of the double floor, or remove only the fixing plate without removing the fixing plate from the double floor.

If the fixing bracket is still attached to the fixing plate, the fixing bracket protrudes from the plate-shaped fixing plate during storage or transportation, and the bulkiness increases. It is difficult to handle because the fixing bracket moves with respect to the fixing plate. The fixing bracket hits the fixing plate to generate noise. Also, if the fixing plate is still attached to the fixing plate, the fixing plate will be attached to the inner edge of the wire outlet when the fixing plate is placed in or removed from the wire outlet of the double floor. Be careful not to get caught in the work.

However, the above problem is solved in the present invention in which the fixing metal fitting in the state where the sandwiching piece and the mounting piece and the mounting screw are combined can be attached and detached from the fixing plate. If the fixing bracket and the fixing plate are separated, they can be easily transported and stored. It is easy to attach and remove the fixing plate to the wire outlet on the double floor.

〔Example〕

Next, an embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 3 shows the structure of the fixing plate in the system floor outlet mounting apparatus according to the present invention, and FIG. 4 shows the structure of the fixing bracket.

The fixing plate 10 has a flat disk shape formed of a steel plate or the like, and has an electric wire drawing hole 12 formed at its center.
At the inner peripheral edge of the wire drawing hole 12, a female screw portion 13 similar to that formed in a normal electric wire tube is cut. The diameter of the female screw portion 13 is set according to the female screw of an insert provided in a normal floor duct. A cutout groove 14 is formed diametrically outward from the inner peripheral edge of the wire drawing hole 12, and the back end of the cutout groove 14 is formed in an arc shape, and the back end of this arc shape faces the upper surface side. An open plate fir portion 15 is formed. A pair of screw holes 16, 16 are formed at positions symmetrical to each other in the diametrical direction orthogonal to the cutout groove 14. The screw holes 16 and 16 are used when attaching the outlet. Therefore, the fixing plate 10 is provided with two types of female screw portion 13 of the wire drawing hole 12 and a pair of screw holes 16 and 16 as mounting screw portions for mounting the outlet.

Next, the fixing metal fitting 20 shown in FIG. 4 is made of a thin steel plate or the like as a whole, and a rectangular plate is bent at two positions at right angles to have a substantially Z-shaped cross section. The horizontal piece on the upper side of the solid metal fitting 20 becomes the attachment piece 22 to the fixing plate 10, and the attachment piece 22
A mounting screw hole 23 is formed at the center of the. With respect to the vertical piece 24 connected to one end of the mounting piece 22, a lower horizontal piece extending to the opposite side of the mounting piece 22 becomes the sandwiching piece 26. The height of the vertical piece 24, that is, the vertical distance between the mounting piece 22 and the sandwiching piece 26, is the same as the thickness of the inner peripheral edge of the wire outlet of the double floor according to the thickness of the double floor to which the fixing plate 10 is attached. It is set to be a little narrow.

A method for attaching the floor duct outlet to the double floor of the system floor using the fixing plate 10 and the fixing bracket 20 as described above will be described.

First, as shown in FIG. 5 and FIG. 6, the mounting screw 30 having a dish-shaped head is inserted into both the notched grooves 14 of the fixing plate 10,
The lower end of the mounting screw 30 is screwed into the mounting screw hole 23 of the fixing bracket 20, and the fixing bracket 20 is temporarily mounted on the lower surface of the fixing plate 10 in a suspended state. That is, the mounting screw 30 and the fixing bracket 20 can be moved in the radial direction along the cutout groove 14 of the fixing plate 10 without strongly tightening the mounting screw 30. Then, the tip of the sandwiching piece 26 of the fixture 20 is arranged inside the outer periphery of the fixing plate 10. Note that the mounting screw 30 may be slid into the notch groove 14 from the wire drawing hole 12 in a state where the mounting screw 30 is screwed into the fixing bracket 20 partway in advance.

At the construction site, the original floor structure made of concrete, etc. 40
A double floor 42, which serves as a system floor, is installed on the upper part of the space. An electric wire outlet 44 is formed through the double floor 42. The inner diameter of the wire outlet 44 is a fixing plate
It is set to be slightly smaller than the outer diameter of 10. A step portion 46 is formed at the upper end of the wire outlet 44, and the outer diameter and depth of the upper edge step portion 46 are substantially the same as the outer diameter and thickness of the fixing plate 10.

The fixing plate 10 to which the fixing metal fitting 20 is temporarily attached is fitted into the electric wire outlet 44 of the double floor 42. Since the sandwiching piece 26 of the fixing bracket 20 is arranged inside the outer periphery of the fixing plate 10,
Can be inserted smoothly without getting caught in the wire outlet 44.

As shown in FIG. 7, the fixing plate 10 is a wire outlet.
When fitted into the upper edge step portion 44 of 44, the upper surface of the fixing plate 10 and the upper surface of the double floor 42 are in the same continuous state. With the sandwiching piece 26 of the fixing bracket 20 arranged below the double floor 42 (shown on the right side in the figure), operate the mounting screw 30 manually or with a tool such as a screwdriver 38 to fix the fixing bracket. 20
And the sandwiching piece 26 is moved to the outer peripheral side of the fixing plate 10. With the mounting screw 30 moved to the back of the notch groove 14,
Operate the screwdriver 38 and tighten the mounting screw 30.
There is no concern that the mounting screw 30 will remain protruding on the upper surface of the fixing plate 10 because the dish-shaped head of the mounting screw 30 fits tightly into the countersunk portion 15 of the cutout groove 14 and is tightened. . The mounting piece 22 of the fixing metal fitting 20 is attracted to the lower surface of the fixing plate 10, and the sandwiching piece 26 hits the back surface of the double floor 42 at a position just opposite to the outer peripheral edge of the fixing plate 10 and hits the fixing plate 10. The double floor 42 is sandwiched between the lower surface of the fixing plate 26 and the lower surface of the fixing plate 26, and the fixing plate 10 is fixed to the double floor.
It is securely and firmly attached to 42. At this time, the fixing bracket 20
The length of the vertical piece 24 of the wire outlet 44 of the double floor 42
The thickness is set to be slightly shorter than the thickness of the portion below the upper edge step portion 46 so that the double floor 42 can be sufficiently tightened and fixed by the sandwiching piece 26.

When the fixing plate 10 is fixedly attached to the double floor 42 as described above, the female screw portion 13 of the wire drawing hole 12 of the fixing plate 10 and the mounting screw hole 16 are used to fix the fixing plate 10 on the fixing plate 10. Any floor duct outlet can be attached and fixed to the.

FIGS. 1, 2, and 8 show a state in which the high tension outlet 50 is mounted and fixed using the mounting screw hole 16. High tension outlet 50 itself,
It is the same as the conventional outlet for a normal floor duct, and the outer shell 52 made of synthetic resin is used for the power outlet.
54 are decorated. In addition, usually, on the lower surface of the outlet 50 for the floor duct, a tubular member with a male screw for screwing and fixing to the conduit screw of the insert of the floor duct is detachably attached, but in this embodiment, with the male screw Since the tubular member is not used, the male threaded tubular member is removed in advance.

A carpet 48 is laid on the double floor 42 to which the fixing plate 10 is attached and fixed. Through hole 49 on carpet 48
Is formed, and the outer peripheral portion of the fixing plate 10 is carpeted.
While being covered with 48, the vicinity of the wire outlet 12 of the fixing plate 10 is not covered with the carpet 48. The outlet 50 is a fixing plate with the carpet 48 sandwiched between them.
10 is placed on the outer shell 52 of the outlet 50 through the inner lid 51 that presses the upper surface of the outlet 54 from above, and the mounting screw 56 is screwed into the screw hole 16 of the fixing plate 10 to form the outlet. The 50 is attached and fixed to the fixing plate 10. The upper portion of the mounting screw 56 is covered with the decorative plate 53 and the like. Wiring to the outlet 54 is provided through the through hole 49 of the carpet 48, the wire outlet 12 of the fixing plate 10, and the wire outlet 44 of the double floor 42.

Next, the embodiment shown in FIG. 9 is a case where a low tension outlet 51 for connecting a telephone line or the like is attached. The entire structure of the low tension outlet 51 itself is the same as the outlet for a normal floor duct. The mounting screw 56 inserted into the outlet 51 from above is screwed into the screw hole 16 of the fixing plate 10 to fix the outlet 50 to the fixing plate 10 as in the above-described embodiment.

FIG. 10 shows a case where the outlet 50 is attached using the female screw portion 13 of the fixing plate 10. In this example,
As the high-tension outlet 50, a high-tension outlet with a male threaded mounting tube member 58 attached to the center thereof is used. Then, the male threaded mounting pipe member 58 is screwed into the female screw portion 13 of the wire drawing hole of the fixing plate 10 to fix the outlet 50 to the fixing plate 10. In this case, the fixing by the mounting screw 56 does not have to be performed, but if necessary, the outlet 50 can be mounted and fixed to the fixing plate 10 by both the mounting screw 56 and the male threaded mounting pipe member 58. .

[Effect of device]

According to the floor duct outlet mounting device according to the present invention described above, the fixing plate having the mounting screw portion for mounting the floor duct outlet and the wire drawing hole is formed from the fixing bracket and the sandwiching piece. Since it can be attached and fixed to the double floor of the system floor with only a simple mechanism and operation, it is possible to use the outlet for the floor duct as it is without using the connecting equipment dedicated to the system floor as in the past. Will be possible.

Compared to the connection equipment dedicated to the system floor, there is a much wider variety of connection equipment, and because it is possible to use floor duct outlets that are inexpensive, it is possible to easily meet various requirements and conditions at the construction site, As the construction efficiency increases, it is economical in terms of construction cost.

Especially, since the mounting screw of the fixing bracket is locked in the notch groove connected to the wire drawing hole of the fixing plate, the fixing bracket can be easily attached to and detached from the fixing plate. The fixing metal fittings can be easily handled for transportation and storage, and the work of attaching and detaching the fixing plate to and from the wire drawing outlet of the double floor becomes very easy.

[Brief description of drawings]

FIG. 1 is a sectional view showing a construction state of an embodiment according to the present invention, FIG. 2 is a horizontal sectional view, FIG. 3 shows a fixing plate, FIG. 3 (a) is a plan view, and FIG. b) is a sectional view taken along the line III-III in FIG. 3 (a), and FIG.
FIG. 4 (a) is a plan view, FIG. 4 (b) is a sectional view, FIG. 5 is a plan view showing a combination state of a fixing plate and a fixing metal fitting, and FIGS. 6 and 7 are double floors. Fig. 8 is a cross-sectional view sequentially showing the mounting steps of Fig. 8, Fig. 8 is a cross-sectional view in a direction orthogonal to Fig. 1 in a construction state, and Fig. 9 is a cross-sectional view showing another embodiment,
FIG. 10 is a sectional view showing a different embodiment of the outlet mounting structure, and FIG. 11 is a sectional view of a conventional example. 10 ... Fixing plate, 12 ... Wire drawing hole, 13 ... Female screw part,
14 ... Notch groove, 16 ... Outlet mounting screw part, 17 ... Long hole, 20 ... Fixing bracket 26 ... Clamping piece, 30 ... Fixing bracket mounting screw, 42 ... Double floor, 44
… Wire outlets, 50, 51… Outlets, 56… Outlet mounting screws

Claims (1)

[Scope of utility model registration request] 1. A device for installing a double floor with a space between the floor and a floor, and installing a floor duct outlet on the double floor in a system floor in which wiring is passed through the space. The fixing plate, which consists of a fixing plate for mounting and a fixing plate for mounting and fixing the fixing plate to the double floor, is provided on the upper surface of the wire outlet formed through the double floor. And a notch groove extending from the inner peripheral edge of the electric wire outlet hole to the outer peripheral portion of the electric wire outlet hole, and the fixing metal fitting is provided between the inner peripheral edge of the electric wire outlet of the double floor and the lower surface of the fixing plate. The sandwiching piece to be sandwiched, the mounting piece that is connected to the sandwiching piece and faces the fixing plate, and the mounting piece is movably locked in the notch groove of the wire drawing hole and screwed into the mounting piece so that the mounting piece faces the fixing plate side. Tightening Outlet mounting device for the system floor, characterized by and a mounting screw for fixing.