JPH0427772B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a deck plate for use in which buried objects such as conduit end protectors and boxes buried in concrete can be easily fixed to the deck plate. This relates to a buried object fixing device.

[Conventional technology]

An example of a conventional buried object fixing device for a deck plate is shown in FIGS. 18 and 19.

This fixture F' has a locking plate 6 attached to one end of the threaded rod 62.
4 is attached. To fix the conduit end protector A', which is a buried object, to the deck plate D using this fixing device F', first, as shown in FIG. A long hole 66 through which it can pass is provided in the deck plate D,
Locking plate 6 of fixture F' from above deck plate D
4 is inserted into the elongated hole 66 to protrude below the deck plate D, and then the fixture F' is rotated approximately 90 degrees to lock the locking plate 64 to the deck plate D.

Next, place the conduit end protector A', which is a buried object, on the deck plate D, insert the threaded rod 62 of the fixture F' into the through hole 68 provided in this protector A', and screw the When the rod 62 and the nut 70 are screwed together, the conduit end protector A' is fixed to the deck plate D.

Furthermore, in the case of metal boxes, the boxes may be fixed to the deck plate by welding.

[Problem that the invention seeks to solve]

When the conventional fixing device F' is used, as shown in FIG. 16, after drilling several holes using a hole saw, the part shown by the two-dot chain line is cut to make an elongated hole 66 in the deck plate D. The work of providing this elongated hole 66 is time-consuming and labor-intensive. Furthermore, since the locking plate 64 of the fixture F' is exposed on the lower surface of the deck plate D, the fixture F' must be removed after concrete is poured.

Furthermore, in the case of fixing by welding, the work was difficult because it required work at high places and the welding tool had to be moved frequently on the deck plate.

In any of the fixing methods, the wire led to the conduit end protector or box must be passed through the hole provided in the deck plate, and if the hole is left open with a hole saw, the cut part around the hole may As a result, the wire is damaged, so it is necessary to cover the cut portion of the hole with a protective device 72 (see FIG. 17) to prevent damage to the wire.

The present invention was developed in view of the above-mentioned problems that occurred when fixing buried objects to a deck plate.
The object of the present invention is to provide a fixture for fixing buried objects for a deck plate that can easily fix buried objects to the deck plate and prevent damage to electric wires without having to process the cut portion of the wire passage hole. It is.

[Means for solving problems]

The first invention is a buried object fixing device for a deck plate for fixing buried objects such as conduit end protectors, boxes, etc. buried in concrete to a deck plate. A contraction part is provided to narrow the width of the fixture body, and a pair of fitting bodies that are fitted around the periphery of the wire passage hole provided in the deck plate are attached to the lower surface of the fixture body on both sides of the contraction part. A fitting protrusion corresponding to the buried object is provided on the upper surface of the fixing device body, and a fixing means is provided for fixing the buried object fitted to the fitting protrusion to the fixing device main body. It is characterized by the fact that

The second invention is a buried object for a deck plate for fixing buried objects such as conduit end protectors and boxes buried in concrete to the deck plate, and at the same time attaching devices such as sensors and fluorescent lights to the deck plate. This is a fixing device, which has the additional feature of the first invention that ``a guide protrusion is provided on the lower surface of the fixing device body to be inserted into a device mounting hole provided in the vicinity of the wire passage hole.'' .

[Action of the invention]

In the first invention, when force is applied to the fixture body to narrow the width in the direction perpendicular to the contraction part, the pair of fitting bodies provided on both sides of the contraction part approach each other. In this state, when the pair of fitting bodies are inserted into the wire passage holes provided in the deck plate and the force applied to the fixture body is released, the fixture body returns to its original shape, which allows the wire to pass through. The fitting body is fitted into the peripheral portion of the wire hole, and the fixture body is attached in close contact with the upper surface of the deck plate.

When the buried object is pushed into the fitting protrusion provided on the upper surface of the fixing device body and fitted into it, and the buried object is fixed to the fixing device body via the fixing means, the buried object is fixed to the deck plate.

Since the fitting body is fitted around almost the entire circumference of the wire passing hole provided in the deck plate, there is no need to cover the cut portion of the wire passing hole.

In addition, in the second invention, when fitting the pair of fitting bodies provided on the lower surface of the fixture main body to the peripheral part of the wire passage hole, the guide protrusion provided on the lower surface of the fixture main body is inserted. Insert the fixture into the fixture mounting hole and attach the fixture body to the deck plate. When the buried object is pushed into and fitted into the fitting protrusion of the fixture main body, the screw hole for attaching an instrument provided in the buried object is located above the instrument attachment hole. Place the device on the underside of the deck plate, insert the screw into the device mounting hole provided on the deck plate, and screw this screw into the screw hole of the buried object. A device is attached to the underside of the plate.

〔Example〕

Hereinafter, the first and second inventions will be described in detail by giving examples.

1 and 2 are perspective views of the conduit end protector _A1 seen from above and below, respectively. The main body 2 of the conduit end protector A ₁ is open at the bottom, and the inner peripheral surface of the main body 2 has a rectangular shape. Flanges 4 are provided on both sides of the main body 2, protrusions 6 each having a semicircular tip are provided at both ends of the flange 4, and elongated holes 8 are provided in the protrusions 6 to penetrate vertically. ing.

A rib 10 is provided on a side of the main body 2 that is different from the side on which the flange 4 is provided, and this rib 1
A screw hole 12 is provided at 0.

FIGS. 3 and 4 are perspective views of the fixture F ₁ seen from above and below, respectively. A slit 16 is provided in the center of the plate-shaped fixture main body 14 in the longitudinal direction, and a peripheral wall 18 is provided on the outer periphery of the fixture main body 14 over the entire circumference. 4 on the surrounding wall 18
Arcuate portions 20 are provided to protrude outward, and each arcuate portion 20 is provided at a position corresponding to each protrusion 6 provided on the conduit end protector _A1 .

The protrusion 6 and elongated hole 8 provided in the conduit end protector A ₁ are for attaching this conduit end protector A ₁ to a general formwork, and correspondingly, the protrusion 6 and the elongated hole 8 provided in the fixture body 14 are represents the arcuate portion 20 and the protrusion 34 described below.
is provided. In other words, this conduit end protector
_A1 can be attached to both a formwork and a deck plate, but if it is used exclusively for a deck plate, the protrusion 6 and elongated hole 8 are unnecessary.

Further, an undercut portion 21 is provided inside the straight portion of the peripheral wall 18.

A deck plate D is installed in the center of the fixture body 14.
A hole 24 is provided that is slightly smaller than the wire passage hole 22 provided in the hole 2 on the lower surface of the fixture body 14.
A pair of arcuate fitting bodies 26 are provided on the periphery of the slit 16, facing each other and positioned on both sides of the slit 16. The fitting body 26 has a crescent-shaped clamping plate 30 provided at the lower end of a short half-tube body 28 so as to face outward and parallel to the plate surface of the fixture body 14 .

A conduit end protector is installed on the top surface of the fixture body 14.
A fitting protrusion 32 is provided for pushing and fitting the main body 2 of _A1 . The fitting protrusion 32 of the embodiment is divided into four parts by the slit 16 and the hole 24, and the shape of the outer periphery of the divided fitting protrusion 32 is similar to that of the main body 2 of the conduit end protector _A1 . It corresponds to the shape of the inner circumference. Each of the divided fitting protrusions 32 is provided with a protrusion 34 facing the arcuate portion 20 of the peripheral wall 18, and this protrusion 34 is formed into an elongated hole provided in the protrusion 6 of the conduit end protector _A1 . 8 is fitted.

Guide protrusions 36 are provided at both ends of the slit 16 on the lower surface of the fixture body 14. This guide projection 36 is inserted into an instrument attachment hole 38 provided in the deck plate D. In addition, 40 in the figure indicates a holding plate for holding the fixture _F1 with the fingertips when applying force to the fixture body 14 to narrow the width in the direction perpendicular to the slit 16.

To attach the conduit end protector A ₁ to the deck plate D using this fixing device F ₁ , as shown in FIG. 5, use a hole saw to create a wire passage hole 22 in the deck plate D. At the same time, device mounting holes 38 are provided at a predetermined pitch on both sides of the wire passage hole 22 using a drill.

Next, as shown in FIG. 9, with one fitting body 26 fitted into the peripheral part of the wire passage hole 22, hold each holding plate 40 of the fixture _F1 with your fingertips and mutually When pressed, since the slit 16 is provided in the center of the fixture main body 14, the width of the central part of the fixture main body 14 is narrowed, and the other fitting body 26 is closed, as shown in FIG. Wire passage hole 2
2 is inserted. When the applied force is released after the other fitting body 26 is completely inserted into the wire passage hole 22, the pair of fitting bodies 26 are inserted into the wire passage hole 22, as shown in FIGS. 5 and 11. At the same time as being fitted into the peripheral part of the wire hole 22, the fixture body 14 is in close contact with the deck plate D, and the fixture is attached to the deck plate D.
F ₁ is installed.

When attaching fixture F ₁ to deck plate D,
Each guide protrusion 3 provided on the lower surface of the fixture body 14
6 into the instrument mounting holes 38, respectively.

Since the slit 16 is provided in the center of the fixture body 14, a gap is formed between the pair of fitting bodies 26. Fixture F ₁ to deck plate D
In order to prevent the deformation of the fixture F ₁ and ensure the fixation of the conduit end protector A ₁ to the fixture F ₁ after installation, as shown in FIGS. 6 and 8, The fitting pieces 42 each having a U-shaped cross section may be fitted onto the deck plate D in the gap formed between the pair of fitting bodies 26. This fitting piece 42
also plays a role in preventing damage to the wires and insulating them.

Next, when the conduit end protector A ₁ is pushed into the fitting protrusion 32 of the fixture F ₁ , the main body 2 of the conduit end protector A ₁ moves around the outer periphery of the fitting protrusion 32 of the fixture F ₁ . At the same time, the protrusion 34 provided on the fixture _F1 is fitted into the elongated hole 8 provided in the protrusion 6 of the conduit end protector _A1 , and the conduit end protector _A1 By fitting the flange 4 below the undercut portion 21 provided inside the peripheral wall 18, as shown in _FIG .
A ₁ is fixed. In this state, the screw hole 12 provided in the conduit end protector A ₁ is located above the device attachment hole 38 .

To ensure the fixation of the conduit end protector A ₁ to the fixture F ₁ , as shown in FIG.
A screw 44 is inserted between the protrusion 6 provided on the conduit end protector A ₁ and the protrusion 34 provided on the fixture F _1.
Just screw it in.

In addition, in order to attach an instrument B such as a sensor to the lower surface of the deck plate D, as shown in FIG.
When screwing the screw 46 inserted into the screw hole 12 provided in the conduit end protector _A1 , the deck plate D
Apparatus B is attached to conduit end protector A ₁ fixed to .

After fixing the conduit end protector A ₁ to the fixture F ₁ and performing the prescribed piping and wiring work, concrete is poured on the deck plate D.

Another embodiment of the first and second inventions is shown in FIGS. 15 and 16. Fixture of this example
F ₂ is for attaching the box A ₂ to the deck plate D, and except for the fact that the shape of the fixture main body 14' is rectangular, the other parts are almost the same as in the previous embodiment, so they are equivalent. The same reference numerals are appended with "'" to the parts, and detailed explanations are omitted.

Alternatively, only a wire passing hole is provided without providing a device mounting hole in the deck plate, a fixture is attached to the wire passing hole using a pair of fitting bodies, and a buried object is fixed to this fixture. You can also do it. A fixture used in this manner corresponds to the first invention.

In each of the above embodiments, the contraction part for narrowing the width of the fixing device body is composed of a slit, but the contraction part is not limited to a slit, and may be composed of a bellows, a thin plate, etc. It is possible. Also,
The shape of the fitting protrusion provided on the top surface of the fixture body is
The structure is not limited to one in which the buried object is pushed into the fitting protrusion in accordance with the shape of the inner peripheral surface of the buried object, but the fitting protrusion provided on the upper surface of the fixing body is configured with a pin. Alternatively, a pin hole corresponding to the pin may be provided in the buried object, and the two may be fitted together.

〔Effect of the invention〕

According to the first and second inventions, buried objects such as conduit end protectors and boxes can be easily attached to the deck plate via the fixing device, and buried objects such as conduit end protectors and boxes can be easily attached to the deck plate using the fixing device. Since there is no large exposed object on the lower surface of the deck plate when objects are attached, it is sufficient to leave it as is after concrete is poured, which significantly improves work efficiency. In addition, a pair of fitting bodies provided on the fixture are fitted around the wire passage hole provided in the deck plate, so there is no need to cover the cut portion of the wire passage hole. .

Moreover, according to the second invention, instruments such as a sensor and a fluorescent lamp can be easily attached to the deck plate.

[Brief explanation of drawings]

1 to 15 are diagrams for explaining embodiments of the first and second inventions, and FIGS. 1 and 2 show the upper and lower parts of the conduit end protector _A1 , respectively. FIGS. 3 and 4 are perspective views of the fixing device F ₁ seen _from above and below, respectively, and FIGS. A perspective view showing the process of installing the conduit end protector A ₁ , Figure 8 shows the fixing device F ₁
Figures 9 to 11 are perspective views of the deck plate D with the attached deck plate D viewed from below.
FIG. 12 is a cross-sectional view for explaining the order of fitting the fitting body 26 of the fixture F ₁ into the wire passage hole ₂₂ of the wire passage hole 22. FIG. 13 is a sectional view taken along the direction perpendicular to the slit 16, FIG. 13 is a sectional view taken along the slit 16 with instrument B attached to the deck plate D, and FIG. 14 is a sectional view taken along the direction perpendicular to the slit ₁₆ . ₂
FIG. 15 is a perspective view of the fixture _F2 seen from below. FIGS. 16 to 19 are diagrams for explaining the conventional fixture F', in which the first
6 is a perspective view of the deck plate D with the elongated hole 66 provided, FIG. 17 is a perspective view of the cut portion of the elongated hole 66 covered with a protective device 72, and FIG. 18 is a perspective view of the fixing device F. Figure 19 is a cross-sectional view of the conduit end protector A' fixed to the deck plate D using the
FIG. 3 is a perspective view of the fixture F'. The explanation of the symbols of the main parts is as follows.
A ₁ : Conduit end protector (buried object), A ₂ : Box (buried object), B: Appliance, D: Decking plate, F ₁ ,
F ₂ : Fixture, 14, 14': Fixture main body, 16,
16': Slit (shrinkage part), 21, 21': Undercut part (fixing means), 22, 22': Wire passage hole, 26, 26': Fitting body, 32, 32': Fitting projection body , 36, 36': Guide protrusion, 38: Instrument mounting hole, 44: Screw (fixing means).

Claims (1)

[Scope of Claims] 1. A buried object fixing device for a deck plate for fixing buried objects such as conduit end protectors and boxes buried in concrete to a deck plate, the fixing device having a plate shape. A contraction part for narrowing the width of the fixture body is provided at the bottom of the fixture body, and a pair of fitting bodies to be fitted around the wire passage holes provided in the deck plate are attached to the bottom surface of the fixture body. A fitting protrusion corresponding to the buried object is provided on the upper surface of the fixing device body, and a fixing means is provided for fixing the buried object fitted to the fitting protrusion to the fixing device main body. A buried object fixing device for a deck plate, characterized by comprising: 2. A buried object fixing device for a deck plate according to claim 1, wherein the contracted portion is constituted by a slit. 3. The fixing means for fixing the buried object to the fixture main body is composed of an undercut section provided inside the peripheral wall of the fixture main body, and the flange provided at the lower end of the buried object is connected below the undercut section. A buried object fixing device for a deck plate according to claim 1, wherein the buried object is fixed to the fixture main body by fitting into the fixing device body. 4 A buried object fixing device for deck plates that is used to fix conduit end protectors, boxes, etc. buried in concrete to the deck plate, and at the same time to attach devices such as sensors and fluorescent lights to the deck plate. A contraction part is provided in the plate-shaped fixture main body to narrow the width of the fixture main body, and a pair of fitting bodies that are fitted into the periphery of the wire passage hole provided in the deck plate are fixed. Provided on the lower surface of the fixing device body on both sides of the contraction part, and providing fitting protrusions corresponding to the buried object on the upper surface of the fixing device main body,
It is equipped with a fixing means for fixing the buried object to be fitted into the fitting protrusion to the fixture main body, and the guide protrusion to be inserted into the device mounting hole provided near the wire passage hole is fixed to the fixture main body. A buried object fixing device for a deck plate, characterized by being provided on the bottom surface.