JPH0242802Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is buried in a concrete building,
The present invention relates to an insert for screwing together a suspension rod member for suspending ceiling materials, etc., and particularly relates to an insert for concrete buildings that is fixed to a concrete formwork by rotating the insert.

Conventionally, inserts were fixed to concrete formwork by driving nails with a hammer. Therefore, in the present invention, instead of using nails, the threaded part is screwed into the concrete formwork by freely rotating the insert, which has a threaded part protruding in advance and a locking part and a locking part assembled together. It is easier and safer than nailing work, and furthermore, the purpose is to fix firmly without using tools.

In other words, the present invention includes a cylindrical body with an open lower end and a female thread for screwing together a hanging rod member, and a locking element that is removably inserted into the lower end of the body and is locked in a non-rotating state. The lower end of the main body has a non-circular inner circumferential surface or a concave lower end surface to provide a rotation stopper. The present invention provides an insert for a concrete building, wherein the locking portion of the fixing member is formed in a shape corresponding to the rotation preventing portion. Examples will be explained below.

First Embodiment FIG. 1 shows a perspective view, and FIG. 2 shows a central vertical sectional view of the main body. Insert 1 consists of main body 2 and fixing member 3
It is made up of. The main body 2 consists of a bulging head 4 and a cylindrical part 5, and a rotation stopper 6 having a hexagonal inner peripheral surface at the lower end of the main body, and a rotation stopper communicating with the rotation stopper 6. It has a female screw 7 having a smaller diameter than the inner circumference of the portion 6. A hanging member for suspending a ceiling material or the like is screwed into the female screw 7. The fixing member 3 is removably inserted into the rotation stopper 6, and includes a hexagonal column-shaped locking portion 8 corresponding to the inner circumferential surface of the rotation stopper 6;
A seat 9 is provided at the bottom of the seat 9, and a threaded portion 1 is inserted from the bottom surface of the seat 9.
0 is set protrudingly. The threaded portion 10 may have a sharp tip, and a metal screw may be embedded in the locking portion 8 or may be integrally formed from the seat 9. In this embodiment, the detent portion 6 and the locking portion 8 are formed in a hexagonal shape, but they are not limited to a hexagonal shape as long as they are polygonal.

Second Embodiment FIG. 3 shows a perspective view. The anti-rotation part 6 has a single recessed line 11 on the inner surface of the cylindrical part 5 whose inner peripheral surface is circular.
is formed in the axial direction of the cylindrical body 5 so that the inner circumferential surface of the lower end of the main body has a non-circular shape, and is removably inserted into the locking part 6 of the fixing member 3, Convex strip 1 corresponding to concave strip 11 of rotation stopper 6
The second embodiment is the same as the first embodiment except that a locking portion 8 in which numbers 2 and 12 are formed is provided. Two protrusions 13, 13 are provided on the head 4 at symmetrical positions to prevent rotation when the insert 1 is screwed into the mold by holding the head 4 by hand.

Third Embodiment FIG. 4 shows a perspective view. A detent portion 6 is formed by alternately continuing convex lines and concave lines on the inner circumferential surface of the lower end of the main body. The fixing member 3 is formed with a columnar locking portion 8 in which concave lines and convex lines corresponding to the above-mentioned convex lines and concave lines are alternately continuous. The other configurations are the same as in the first embodiment.

Fourth Embodiment FIG. 5 shows a perspective view. Recesses 14 cut out from the lower end surface are formed at two symmetrical positions on the lower end surface of the main body 2, and a rotation stopper 6 is formed at the lower end of the main body. The fixing member 3 has a convex portion corresponding to the concave portion, and a locking portion 8 that is inserted and locked into the rotation stopper 6 is formed. The other configurations are the same as in the first embodiment. Although the notches and protrusions are formed in two places, the present invention is not limited to this, and they may be formed in one place or three or more places.

The main body 2 shown in Fig. 6 A and B includes a head 4 and a cylindrical part 5.
are formed from separate members, and the head 4 is press-fitted into the cylindrical part 5 and assembled. As described above in the first to fourth embodiments, in the concrete building insert of the present invention, the rotation stopper provided at the lower end of the main body has a non-circular inner peripheral surface. Or, it is provided with a recess formed on the lower end surface, and the locking portion of the fixing member may be formed in a shape corresponding to the rotation stopper, and the shape of the inner peripheral surface of the lower end of the main body or the shape of the recess on the lower end surface. The shape of the locking portion of the fixing member is not limited to the shape described in the above embodiment.

The insert for concrete buildings of the present invention configured in this way has the locking part of the fixing member correspond to the rotation stopper provided at the lower end of the main body, and the locking part is removably inserted into the lower end of the main body. By doing so, the fixing member is locked to the main body in a non-rotating state, so hold the insert 1 by hand by the head 4 at the predetermined mounting position of the concrete form 11 as shown in FIG. By turning in the direction, the threaded portion 10 is rotated and screwed into the formwork 11, thereby fixing the insert 1 to the formwork 11. Next, after pouring concrete and removing the formwork, the fixing member 3 is removed from the main body 2 as shown in FIG.

In this way, with the insert for concrete buildings of the present invention, the fixing member can be removably inserted into the main body and can be locked in a non-rotating state, so it can be easily inserted by rotating the insert. It can be fixed to a screw, and it is firmly fixed because it is fixed with screws.
Further, since it can be turned by hand, no tools are required for fixing, and since no tools are used, there is no risk of injury during the fixing work, and the work can be done safely.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of the first embodiment of the present invention, Fig. 2 is a central vertical sectional view of the main body, Fig. 3 is an exploded perspective view of the second embodiment of the invention, and Fig. 4 is an exploded perspective view of the first embodiment of the invention. , an exploded perspective view of the third embodiment of the present invention, and FIG. 5 is a perspective view of the fourth embodiment of the present invention.
An exploded perspective view of the embodiment, FIGS.
Figures A and B are usage diagrams of the present invention. Explanation of symbols of main parts, 1...Insert, 2
...Main body, 3...Fixing member, 6...Stopping part,
7... Female thread, 8... Locking part, 10... Threaded part.

Claims (1)

[Scope of Claim for Utility Model Registration] A cylindrical body with an open bottom end and a female thread for screwing together a hanging rod member, and a cylindrical body that is removably inserted into the bottom end of the body through the opening and is prevented from rotating. It has a locking part that is locked in the state, and a fixing member that has a protruding screw part that is screwed into the formwork, and the lower end of the main body has a non-circular inner circumferential surface or a recess on the lower end surface. An insert for a concrete building, characterized in that the fixing member has a rotation preventing portion formed therein, and the locking portion of the fixing member is formed in a shape to be inserted and locked into the rotation prevention portion at the lower end of the main body.