JPH0215954Y2 - - Google Patents

Description

[Detailed explanation of the invention] Threaded reinforcing bars with threads extending over both outer peripheral surfaces of the long diameter side of a flat round bar are long, heavy, and difficult to move. If the pitches of the two threaded reinforcing bars do not match when connecting those threaded reinforcing bars, it will take time and effort to move the threaded reinforcing bars to match the pitch and screw the coupler together, and it will also take time and effort to screw the coupler together. It is possible that the gap between the screw reinforcing bars is larger than the specified value.

Therefore, in order to eliminate the above-mentioned defects, the present invention installs a coupler and a coupler nut on the threaded reinforcing bar, and utilizes the flat shape of the threaded reinforcing bar to attach the connecting end of one threaded reinforcing bar from the side. Screw the threaded reinforcing bars so that they protrude, and then screw the connecting end of the other threaded reinforcing bar into the protruding part to ensure the pitch of the two threaded reinforcing bars is aligned when the gap between the two threaded reinforcing bars is the smallest, and then remove it. This invention relates to a pitch adjustment gauge for threaded reinforcing bars in which a coupler is threaded across two threaded reinforcing bars to connect the threaded reinforcing bars easily, quickly and accurately, thereby improving work efficiency.

To explain the structure of one embodiment of the present invention shown in the drawings, reference numerals 1 and 1' are threaded reinforcing bars that are connected to each other and used for concrete construction, and screws 2 are installed across both outer peripheries of the long diameter side of the flat round bar. It will be set up.

3 is a coupler, and 4 and 4' are coupler nuts.

a indicates the pitch adjustment gauge of the threaded reinforcing bar, and 5
is the main body of the pitch adjustment gauge a, which is formed into a U-shape that fits on the flat side of the threaded reinforcing bar 1 and has a hexagonal outer peripheral surface, and has a protruding piece 6 on one of the intermediate parts of one side leg. A pitch adjustment gauge a is constructed by extending the female screw 7 and installing it inside the main body 5 with the projecting piece 6 to be screwed into the screws 2 and 2 of the threaded reinforcing bars 1 and 1'.

Next, its effect will be explained. As shown in FIG. 6, a coupler nut 4 and a coupler 3 are screwed into appropriate positions on the connecting end of the threaded reinforcing bar 1, and a coupler nut 4' is screwed into an appropriate position on the connecting end of the threaded reinforcing bar 1'.

At the connecting end of the threaded reinforcing bar 1, the projecting piece 6 of the pitch adjustment gauge a is made to protrude from the threaded reinforcing bar 1, and as shown in FIG. At the same time, the female screw 7 of the main body 5 is screwed into one side of the screw 2 of the threaded reinforcing bar 1. Therefore, if the pitch adjustment gauge a is rotated 90 degrees to the side, the female threads 7 of the pitch adjustment gauge a will be screwed into both sides of the screw 2 of the threaded reinforcing bar 1, as shown in FIG. a is screwed onto and held by the threaded reinforcing bar 1.

Next, the threaded reinforcing bar 1' is moved back and forth, and the threaded reinforcing bar 1 and the threaded reinforcing bar 1' are
As shown by the chain line in FIG. 6, the threaded reinforcing bar 1' is moved to the protruding piece 6 side of the pitch alignment gauge a, minimizing the gap between the connecting end faces of the threaded reinforcing bar 1,
At the minimum gap between 1', thread 1 side of thread 2 of threaded reinforcing bar 1' into female thread 7 of protruding piece 6 of pitch alignment gauge a, and place threaded reinforcing bar 1' concentrically with threaded reinforcing bar 1. Then, threaded reinforcing bars 1, 1'
The gap between them is the smallest, and the pitches of the screws 2 and 2 match.

Then, contrary to the above, use the pitch adjustment gauge a.
is rotated 90 degrees to the side, and as shown in FIG. 4, the main body 5 is fitted onto the flat side of the threaded reinforcing bar 1, and the pitch adjustment gauge a is removed by pulling it outward. Therefore, after rotating and moving the coupler 3 and threading its two halves onto the threaded reinforcing bars 1 and 1', the coupler nuts 4 and 4' are rotated and tightened to the coupler 3. ' are connected by coupler 3 and coupler nuts 4, 4' with the minimum gap therebetween.

In addition, instead of the above threaded reinforcing bars 1 and 1', pitch adjustment gauge a can also be used for flat threaded reinforcing bars, such as threaded reinforcing bars with an elliptical cross section and screws provided across both outer circumferences on the long diameter side. It can be used in the same way as .

On the other hand, the pitch adjustment gauge a may be manufactured by forging or casting, or by bending a T-shaped flat metal plate with screws on one side into a U-shape toward the screw side. Good too.

In the present invention, since the pitch adjustment gauge for threaded reinforcing bars is configured as described above, the projecting piece is made to protrude from the connection side end face of one of the threaded reinforcing bars, and the main body is placed on the flat side of the connection side end of the threaded reinforcing bars. Fit from the side
If you rotate it 90 degrees, it will screw into the threaded reinforcing bar and fix it.
If you operate in the opposite direction to the above, it will be removed from the threaded reinforcing bar.
The pitch adjustment gauge can be attached to and removed from the threaded reinforcing bar very easily and quickly from the side of the threaded reinforcing bar.

Furthermore, after attaching a pitch alignment gauge to one of the threaded reinforcing bars, place the other threaded reinforcing bar to be connected on the connection side of one threaded reinforcing bar, and connect the other threaded reinforcing bar when the gap between them is the smallest. Screw the side end onto the protruding piece of the pitch alignment gauge and
If you make it concentric with the threaded reinforcing bar on both sides, the gap between them will be minimal and the pitch of those threads will match.After that, remove the pitch adjustment gauge, pass the coupler over the reinforcing bar on both sides, and screw them together. This makes it possible to connect both threaded reinforcing bars with a coupler with the minimum gap between them, and to easily and quickly and accurately connect threaded reinforcing bars with a coupler.
Improve work efficiency by saving time and effort.

Moreover, the structure is extremely simple and can be manufactured easily and inexpensively.

[Brief explanation of the drawing]

Fig. 1 is a front view of a pitch adjustment gauge for threaded reinforcing bars according to an embodiment of the present invention, Fig. 2 is a side view, Fig. 3 is a sectional view taken along the line - - of Fig. 1, and Figs. FIG. 4 is a front view illustrating the operation of attaching the pitch adjustment gauge to the threaded reinforcing bar; FIG. 4 shows the pitch alignment gauge fitted to the threaded reinforcing bar, and FIG. 5 shows the pitch alignment gauge screwed to the threaded reinforcing bar. FIG. 6 is a side view illustrating the operation of connecting threaded reinforcing bars. 1, 1'...Threaded reinforcing bar, 2...Screw, 5...Main body, 6...Protruding piece, 7...Female thread.

Claims (1)

[Scope of utility model registration request] The main body is formed into a U-shape that fits on the flat side of a threaded reinforcing bar with threads provided on both outer peripheries of the long diameter side of a flat round rod, and a protruding piece is installed on one of the legs on one side of the main body. and a pitch adjustment gauge for threaded reinforcing bars, wherein a female thread is installed inside the main body with the projecting piece and is threaded across the threaded reinforcing bars and the threads at the connecting end of the threaded reinforcing bars connected thereto.