JPS6355267A - Probe also used as fixing jig mounted in box - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a fixing device installed in a box for magnetically detecting a detected tool installed in the box and tightly fixing the box to a formwork. This relates to a device to be detected that also serves as a tool.

[Conventional technology]

When burying a box such as an outleft box inside a concrete wall, the opening of the box must be tightly secured against the inside surface of the formwork before concrete is poured. The pressure causes concrete to flow into the box through the opening.

Therefore, after building the formwork, we metal-detect the box position from the outside of the formwork, drill an insertion hole in the formwork in the area where the box is located, and insert a pulling tool into the formwork through this insertion hole. The box opening must be screwed into the short hole in the bottom, drawn to the formwork, and tightly fixed to the inner surface of the formwork.

[Problem that the invention seeks to solve]

Boxes buried in concrete walls are either made of metal or resin. If the box is made of metal, it should be possible to detect its position from outside the formwork with a so-called metal detector; The outside of the frame is supported vertically and horizontally by metal squares commonly known as Batakaku, and if you try to detect the box placed between the formwork using a metal detector, the metal detector will There was a frequent problem that the box between the formworks could not be detected because the metal flap corner closest to the box would react.

Furthermore, when the box is made of resin, a metal member is attached to the appropriate position of the box, and its position is detected in the same manner as with a metal box.

In view of the above-mentioned problems, the present invention makes it possible to detect a tool to be detected attached to a box from outside the formwork, and also makes it possible to tightly fix the box opening to the formwork by using the tool to be detected. This was done with the aim of improving work efficiency.

[Means for solving problems]

The present invention is a detection tool that doubles as a fixture installed inside a box to magnetically detect the position of the detection tool installed in the box from outside the formwork and tightly fix the box opening surface to the inner surface of the formwork. The base end of the main body is provided with a mounting part to be attached to the bottom plate of the box, and the tip part is provided with a hook part to be hooked to a hook bolt for drawing the box to the formwork. This is a device to be detected that doubles as a fixture installed in a box and is characterized by being equipped with a magnetic part that emits lines of magnetic force toward the formwork.

〔Example〕

1 and 2 show a detected tool A according to the present invention. This detected tool A also functions as a fixture for the box.

This detected tool A is provided with a male threaded part 4 screwed onto the bottom plate 3 of an outlet box 2 at the base end of a frame-shaped main body 1, and the tip part of the main body 1 is narrower than other parts. A hook section 6 is provided as a width and for hooking the hook portion 5a of the hook bolt 5, and this hook has a structure in which magnets M are embedded above and below the section 6. Division 6 may be located in the same city as other divisions.

A seat part 7 is provided in the center of the bottom plate 3 of the outlet box 2 to protrude outward, and a female screw part 8 provided in the seat part 7 and a male thread part provided in the proximal end of the detected tool A are connected to each other. The screw portion 4 is screwed together, and the detected tool A is thereby mounted in the out-left box 2.

Further, the device to be detected A° shown in FIG. 3 has the same structure as the device to be detected A° except that a magnet M′ is embedded in the center of the hook portion 6. By embedding a magnet M' in the center of the part 6, the part 6 can be easily detected by the part 6, so that the part 6 can be easily caught by the detection tool A' mounted in the outlet box 2 from outside the formwork 9.

In the example shown in FIG. 4, an outlet box 2 is attached to the lower end of a conduit P, and the formwork 9 is erected after the conduit P is tied to nearby reinforcing bars 10 at several locations.

In this state, as shown in FIG. 4(a), the position of the detected tool A' installed in the outleft box 2 is detected using the magnetic detector 11 for detecting the location where magnetism is generated. Then, the magnet M buried in this detected device A°
” magnetic field lines are emitted toward the formwork 9,
The tool A to be detected, which is located closest to the magnetic detector 11 and which is emitting magnetic lines of force by the magnetic detector 11, does not react to the metal flap angle (not shown) that supports the formwork 9.
′ is detected.

Then, mark the position S where the lines of magnetic force are emitted on the formwork 9, and use a drill (not shown) to drill the insertion hole 12 for the hook bolt 5 at this position S [Figure 4 (b)] .

Next, as shown in FIG. 4(c), the hook bolt 5 is inserted into the insertion hole 12 drilled in the formwork 9, and the hook portion 5a at the tip thereof is attached to the hook portion 6 of the detected tool A°. At the same time, when the nut 19 is screwed onto the hook bolt 5 and tightened, the outlet box 2 is drawn to the inner surface 9a of the formwork 9 and comes into close contact with it. The outlet box 2 is now fixed to the formwork 9.

In this state, concrete C is placed between the formwork 9, and after the concrete C has hardened, the formwork 9 is removed and the detected tool A' is removed from the outleft box 2, as shown in Fig. 4 (d). Outlet box 2 as shown
is buried within the concrete wall W.

Further, another embodiment of the present invention is shown in FIG. 5, in which the same parts as in the previous embodiment are denoted by the same reference numerals, and only the different parts will be explained.

The detected tool A'' of this embodiment is provided with a flange portion 14 that closely contacts the bottom plate 3 of the outleft box 2 at the upper and lower ends of the base end of an inverted U-shaped main body 13, and a flange portion 14 that closely contacts the bottom plate 3 of the outleft box 2. The hook has a structure in which a magnet M l + is embedded in the center of the part 6, and this detected device A'' is attached to the bottom plate 3 of the outlet box 2 using fixing screws 15.

Also, by embedding separate magnets M, M''1M'' in the main body 1.13, lines of magnetic force are emitted toward the formwork 9, as in the detection tools A, A', A'' of each of the above embodiments. It is also possible to configure the detected tool itself to be magnetized and emit lines of magnetic force without configuring a magnetic part.

〔Effect of the invention〕

In the present invention, a mounting part is provided at the base end of the main body to be attached to the bottom plate of the box, and a hook part is provided at the tip part to be hooked to a hook bolt for drawing the box to the formwork. Moreover, since the device to be detected, which has a magnetic part that emits magnetic lines of force toward the formwork, is mounted inside the box, the magnetic detector is attached to a so-called butterfly angle made of metal that supports the outside of the formwork, or The magnetic detector can accurately and quickly detect only the detected tool attached to the box without reacting to metal objects around the box, improving work efficiency.

In addition, the detection tool installed inside the box functions as a fixture to fix the box to the formwork, so after detecting the position of the detection tool, an insertion hole is drilled in the formwork. By inserting a hook bolt into this insertion hole and hooking this hook bolt to the hook of the detected tool installed inside the box, the box can be drawn to the formwork side and tightly fixed, and the box can be fixed tightly against the formwork. It can be easily and quickly fixed tightly to the frame.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a detected device A according to the present invention, FIG. 2 is a cross-sectional view of the detected device A installed in an outlet box 2, and FIG. 3 is a perspective view of a detected device A according to the present invention. The perspective view of the device to be detected A' in FIGS. 3 is a cross-sectional view showing the work process of fixing the outleft box 2 to the formwork 9, and FIG. (B) is a cross-sectional view of the state in which the insertion hole 12 for the hook bolt 5 is drilled in the formwork 9 after detection of the detection tool A'', and (C) is a cross-sectional view of the state in which the hook bolt 5 and A cross-sectional view of the outleft box 2 tightly fixed to the formwork 9 using nuts 19 and concrete C poured between the formwork 9. FIG. 5 is a cross-sectional view with the frame 9 and the detected tool A' removed.
It is a sectional view of a state in which a detected device A°" according to yet another embodiment of the present invention is attached to the bottom plate 3 of an outlet box 2. [Explanation of symbols of main parts] A, A', A": to be detected Tools M, M', M"': Magnet (magnetic part) P, P": Conduit t, 13: Main body of detected tool 2: Outlet box (box) 3 Bottom plate of near left box 4: Detected tool Male thread part (installation part) 5: Hook bolt 6: Hook part for detection tool 9: Formwork 11: M1 air detector 14: Flange part of detection tool (installation part) 15: Fixing screw 4 Figure (b) (d)

Claims (3)

[Claims] (1) A detection device that doubles as a fixture installed inside the box to magnetically detect the position of the detection device installed inside the box from outside the formwork and tightly fix the box opening surface to the inside of the formwork. The base end of the main body is provided with a mounting part that can be attached to the bottom plate of the box, and the tip part is provided with a hook part that can be hung on a hook bolt for pulling the box to the formwork. A detection device that doubles as a fixture to be mounted inside a box, characterized by having a magnetic part that emits lines of magnetic force toward the frame. (2) A device to be detected which doubles as a fixing device to be installed in a box as set forth in claim 1, wherein the magnetic part is constructed by providing a separate magnet in the main body. (3) A device to be detected which also serves as a fixture to be installed in a box as set forth in claim 1, wherein the magnetic part is formed by magnetizing the main body itself.