JPH049799Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a positioning device for determining the position of the upper end of a concrete slab. More specifically, the present invention relates to a device for elevating the upper end of a concrete slab.

(Prior art) Conventionally, this type of positioning device consists of a pedestal that is fixed to a base and a rod that is movably attached to the pedestal, and when the rod moves up and down, the tip of the rod moves into the concrete. The top end of the slab was being positioned.

The rod is usually a bolt etc. screwed into the pedestal,
The rod moved up and down due to the screw engagement.

(Problem that the invention aims to solve) However, in conventional devices, the pedestal was directly attached to the base with adhesive, or the pedestal was fixed to the base with screws, etc., making the device itself extremely unstable. However, the drawback was that it was extremely troublesome to install. Further, it was a troublesome operation to screw the bolts together and move them to position them.

SUMMARY OF THE INVENTION An object of the present invention is to provide a positioning device that is highly stable, easy to install, and easy to position.

(Means for Solving the Problems) In order to achieve the above object, the positioning device of the present invention is a positioning device for determining the position of the upper end of a concrete slab cast on a base with protruding reinforcing bars. a main body having a first end having a hole and a second end removably holding the reinforcing bar; and a main body integrally fixed to the main body near the first end, from which the first end can be attached. an elastic member extending away from the main body toward the tip thereof and having a second hole; and a rod passing through the first and second holes, the first hole and the second hole extending apart from each other. The second hole is provided to face each other, and the elastic member has a first position where the first and second holes are aligned and a second position where the first and second holes are misaligned. The rod is movable between the two positions, and is fixed when it is in the second position.

Therefore, in the positioning device of the present invention, stability is achieved because the first end of the main body holds the reinforcing bar, and the height can be easily adjusted because the rod is not screwed in.

(Embodiments) Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Identical parts are indicated by the same reference numerals.

FIG. 1 is a sectional view of an apparatus showing an embodiment of the present invention.

The positioning device 30 has a first end 3 and a second end 5.
an elastic member 7 fixed by welding between both ends of the main body 1, and a rod 9 (see Fig. 3) that engages with holes provided in the main body 1 and the elastic member 7, respectively. It is completed.

The main body 1 is made by bending a sheet steel at the second end 5, and the first end 3 is provided with a hole 3a. Similarly, the elastic member 7 is also provided with holes 7a. The holes 3a and 7a are each circular, but may have other shapes, such as squares or ellipses.

The elastic member 7 is made of a plate spring or the like, and extends from the welded portion 1a to the main body 1 toward the first end 3 so as to be separated from the main body 1. The elastic member 7 is provided with a cylindrical hole 7a that faces the cylindrical hole 3a.

As can be clearly seen from FIG. 2, in the absence of the rod 9, the shaft 3a and the hole 7a are offset from each other when viewed from above.

The second end 5 of the main body 1 has a U-shaped cross section so as to be easily attached to the reinforcing bar 10, and is slightly opened outward at the end 5b. Further, for the same reason, a gentle bending portion 5a is provided. Due to this configuration, once the main body 1 is attached to the reinforcing bar 10, it is firmly fixed and can be easily removed.

Next, the operation of the device of the present invention will be explained with reference to FIGS. 3 and 4.

A rod 9 passing through the hole 3a of the main body 1 and the hole 7a of the elastic member 7 has a head 9a for height adjustment. The head can also be provided with other marking elements made of plastic or other materials if desired.

FIG. 3 shows the elastic member 7 in the first position. In this state, the holes 3a and 7a are aligned, and the rod 9 is therefore free and movable in the direction of the holes. At this time, the distance between the main body 1 and the elastic member 7 is represented by d. To bring the state shown in FIG.
The distance between the knob elastic member 7 and the main body 1 in the direction in which they approach each other, that is, in the direction of the arrow, is defined as a distance d.

At this position, the rod 9 is moved up and down to obtain the height, that is, to determine the position. During this time, the fingers continue to press the elastic member 7 and the main body 1.

After the positioning is completed, when you release your finger, the elastic member 7 separates from the main body 1 due to its elasticity, and the distance between them becomes d'. At this time, the holes 3a and 7a are connected to the rod 9.
deviates from the Therefore, as seen in FIG. 4, the rod 9 is fixed with respect to the main body 1 at point A and with respect to the elastic member 7 at point B, receiving forces in opposite directions.

If it is desired to return the elastic member 7 shown in FIG. 4 from the second position to the first position, the above-mentioned operation may be repeated.
Therefore, by repeating the above operations, you can position it at any desired position.

In the above description, the elastic member 7 may normally take the first position and be displaced to the second position when pinched with fingers. Alternatively, the elastic member 7 may be fixed to the upper side of the main body 1 as seen in FIG.

Note that the elastic member is not fixed by welding, but other fixing methods such as riveting are also possible.

Here, when referring to FIG.
It can be seen that the positioning device of the present invention is fixed. The truss bar 30 consists of a reinforcing bar 10 and a beam 13 (other parts are omitted), and the second end of the device is attached to the part where the beam 13 forms a mountain and is fixed to the reinforcing bar 10. There is.

Of course, it is also possible to attach it to other parts. However, from the standpoint of stability, it is preferable to attach it to the above-mentioned position.

Next, FIG. 6 shows a modification of the hole 3a of the main body 1. Here, the cross section of the hole 3a is conical and becomes narrower toward the elastic member 7. The hole 7a is the same as in the previous embodiment.

In this case, the rod 9 is a bolt, and the valley of the threaded portion on the outer periphery engages with the narrowed portion of the hole 3a, so that a stable position can be reliably maintained after positioning.

Here, the hole 3a is conical, but the hole 7a of the elastic member 7 can also be conical. It is also possible for the holes in both the body 1 and the elastic member 7 to be conical. However, it is preferable that the hole 3a of the main body 1 has a conical shape due to the wall thickness and the like. Further, the hole 7a may have an elliptical shape having a long axis in the longitudinal direction of the elastic member 7.

The rod 9 can also be made of plastic or the like, and in that case, the rod 9 and the mark to be attached to the head 9a can be integrally molded, making it even more convenient.

(Effects of the invention) The positioning device of the invention described above has the following effects.

Since it is directly fixed to the reinforcing bars protruding from the concrete slab, it is highly stable and easy to install.

Furthermore, since the positioning rod can be easily moved, positioning becomes easy.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of an embodiment of the present invention, FIG. 2 is a front view of FIG. 1, and FIG. 3 is a cross-sectional view of the device of the present invention shown in a first position. 4 is a sectional view of the device of the present invention shown in the second position, FIG. 5 is a diagram showing the device of the present invention attached to a truss muscle, and FIG. FIG. 7 is a sectional view showing another embodiment of the invention. Explanation of symbols of main parts: 1...main body, 3...first end, 5...second end, 7...elastic member, 9...
...rod, 10... reinforcing bar, 3a, 7a... hole.

Claims (1)

[Claims for Utility Model Registration] 1. A positioning device that determines the position of the upper end of a concrete slab cast on a base with protruding reinforcing bars, a first end having a first hole and a removably holding the reinforcing bars. a second end integrally fixed to the main body near the first end and extending away from the main body from there toward a distal end of the first end; It consists of an elastic member having two holes, and a rod passing through the first and second holes, the first hole and the second hole are provided facing each other, and the The elastic member is movable between a first position where the first and second holes are aligned and a second position where the first and second holes are misaligned. A positioning device characterized by fixing a rod. 2. The device according to claim 1, wherein the elastic member is fixed to the main body by welding. 3. The device according to claim 1, wherein the hole is substantially circular. 4. The device according to claim 1, wherein the hole has a substantially conical cross section. 5. The device according to claim 4, wherein the rod is a bolt.