JPH0320404Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to an insert for a deck plate, and more specifically, when pouring concrete into the ceiling of a building using a deck plate as a formwork.
Inserts for deck plates (hereinafter simply referred to as inserts) are fixed to this deck plate and are buried in the surface layer of the poured concrete layer to suspend specified pipes, equipment, etc. from the ceiling surface. It is related to.

(Prior Art) As an example of this type, an anchor for attaching a hanging bolt described in Japanese Utility Model Publication No. 52-16010 has been known.

In this example, a threaded bolt is provided protruding from the upper end of a cylindrical body with a female thread formed on the inner circumferential surface, and several upwardly inclined latching pieces are provided integrally with the bolt on the outer circumferential surface of the lower end of the bolt. A cap-shaped obturator with a cylindrical body protruding from the back of its center is fitted onto this bolt, and a nut is screwed into the bolt, and by tightening the nut, the lower end of the obturator's body engages the bolt. It is constructed so that the pieces can be pushed open.

(Problem to be solved by the invention) Conventionally, the situation was as described above, so when the obturator was attached to the deck plate and fixed, the body of the synthetic resin obturator pushed open the latching piece of the cylindrical body. Since the latch piece is attached with a cylindrical shape, stress is constantly applied to the latch piece, and the latch piece and obturator deteriorate over many years of use, reducing the pressing force of the latch piece to the deck plate. The adhesion force between the main body and the deck plate decreases, and the supporting force between the device attached to the cylindrical body and the deck plate decreases, increasing the risk of the device falling.

The above points were problematic.

In view of these shortcomings, the present invention has been designed to ensure that the adhesion between the insert and the deck plate does not deteriorate even after many years of use, and that the device attached to the insert can be reliably supported by the deck plate, making it easier to attach the device to the deck plate. The purpose of this invention is to provide an insert that can be inserted reliably and quickly.

(Means for Solving the Problems) In the present invention, one side of a resin cylindrical body having a hanging bolt insertion hole formed inside is closed with a female screw portion on the inside, and the central outer peripheral surface of the cylindrical body is closed. A pair of holes are provided in the cylindrical body on both sides between the other side of the cylindrical body and the male threaded part, and a pair of holes are provided in the cylindrical body on both sides to communicate with the suspension bolt insertion holes. An insert body is provided with a pair of holes and bulges facing each other in a direction perpendicular to each other, and a fixing nut with a female thread corresponding to the male thread of the insert body is screwed into the male thread of the insert body. It is made by combining them.

(Example) Embodiments of the present invention will be described based on the drawings.

Masu.

As shown in FIGS. 1 and 2, the insert according to the present invention is composed of an insert body A and a fixing nut B, which will be described later.

The insert main body A is a cylindrical body 1 made of resin. A head 2 with a larger diameter than the cylindrical body 1 is provided on one side of the cylindrical body 1, and a fixing nut B is attached to the outer peripheral surface of the central part of the cylindrical body 1. A male screw portion 3 is provided for screwing together.

A female screw portion 5 is provided on the inner peripheral surface of one side of the cylindrical body 1 to be screwed into the upper end of the suspension bolt 4.

From the other end of the cylindrical body 1 to the cylindrical body 1 of the male screw portion 3
A pair of relatively wide holes 6 are provided in the axial direction of the cylindrical body 1 to communicate with a suspension bolt insertion hole 9, which will be described later, while reaching the other formed end.

Bulging portions 7 are provided on both sides of the outer peripheral surface of the insert body A in a direction perpendicular to the pair of holes 6, respectively.

The formed end surface of the bulging portion 7 on one side of the cylindrical body 1 is horizontal, and its wall thickness gradually becomes thinner toward the other side of the cylindrical body 1.

Therefore, when an external force is applied to the pair of bulges 7 in the direction perpendicular to the axis of the insert body A, the resin cylindrical body 1
The distance between the holes 6 is reduced, and as a result, the bulging portion 7 is deformed and reduced in diameter, and when the outer portion is released, it returns to its original shape due to its own elasticity.

A hole extending from the opening on the other side of the cylindrical body 1 of the insert main body A to the stepped portion 8 in the center serves as a suspension bolt insertion hole 9, and the screw portion 5 is connected to the suspension bolt insertion hole 9.

To fix an insert with such a configuration to the deck plate P, screw the fixing nut B onto the male thread 3 of the insert body A, and attach the bulging part 7 side of the insert body A from above the deck plate P. The insert main body A is brought into contact with the hole 10 and pushed into the mounting hole 10 in that state. On this occasion,
An external force in the direction perpendicular to the axis of the insert body A is applied to the opposed bulges 7 provided on the insert body A, and the intervals between the holes 6 of the resin insert body A are reduced, and as a result, the bulges The diameter of the bulges 7 is momentarily reduced and the bulges 7 pass through the attachment holes 10, and immediately after passing, the pair of bulges 7 return to their original shapes due to their own elasticity. After that, when the fixing nut B is tightened by hand using the handle 11 provided on the fixing nut B, the deck plate P is held between the upper end surface of each bulging portion 5 and the lower end surface of the fixing nut B. In this state, the insert is firmly fixed to the deck plate P. At this time, the bulging portion 7 is in a normal state, and no stress is applied thereto.

In this embodiment, the head 2 of the cylindrical body 1 of the insert main body A has a larger diameter than the cylindrical body 1, but it may have the same diameter as the cylindrical body 1.

(Effects of the invention) Since the invention has the above configuration, it has the following effects.

(1) Insert the bulge of the insert body into the mounting hole of the deck plate that has a mounting hole, and use the restoring force of the bulge to return the bulge to its original shape on the back side of the deck plate, and the insert body By screwing the fixing nut onto the male thread,
The deck plate is sandwiched between the upper end surface of the bulge of the insert body and the lower end surface of the fixing nut, and the insert body can be fixed to the deck plate, so that no stress is applied to the bulge during fixation. Because of this, the bulge will not deteriorate even after many years of use, and the adhesion between the insert and the deck plate will not decrease, so the instrument attached to the insert will be reliably supported by the deck plate, ensuring safety. It is.

(2) During fixing work, the insert can be fixed to the deck plate simply by pushing the insert body into the mounting hole of the deck plate and tightening the fixing nut in that state, allowing the work to be done reliably and quickly.

(3) The cylindrical body is made of resin, and the cylindrical body has a simple structure in which an elastic hole and a bulging portion are integrally formed on the other side, so that productivity can be improved.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of an insert according to the present invention, and FIG. 2 is a cross-sectional view of the insert fixed to a deck plate. Explanation of symbols of main parts, A...Insert body, B...Fixing nut, 1...Fixing body, 3...Male thread part, 5...Female thread part, 6...Hole, 7...Bulging part , 9...Hanging bolt insertion hole.

Claims (1)

[Scope of utility model registration request] One side of a resin cylinder 1 having a hanging bolt insertion hole 9 formed inside is closed with a female thread 5 inside, and a male thread 3 on the central outer peripheral surface of the cylinder 1.
A pair of holes 6 are provided in the cylindrical body 1 on both sides between the other side of the cylindrical body 1 and the male screw portion 3, communicating with the hanging bolt insertion hole 9, and the cylindrical body 1
A bulging portion 7 in a direction perpendicular to the pair of holes 6 on the outer peripheral surface of the
An insert main body A is provided, each of which has a female thread corresponding to the male thread part 3 of the insert main body A, which is screwed into the male thread part 3 of the insert main body A. Insert for deck plate.