JPS6311255Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a device for pre-installing an embedded plate for mounting equipment on the wall surface of a reinforced concrete structure.

Conventionally, when attaching an embedded plate to a concrete wall surface first, the embedded plate is nailed to the inner surface of the formwork to temporarily secure it, and then concrete is poured into the formwork. However, although demolding is easy with the conventional method described above, the embedded plate may come off or shift during concrete pouring.
It is also difficult to check the installation status unless the nails are visible on the surface of the formwork.

This invention was devised in view of the above circumstances, and its details will be explained below with reference to illustrated embodiments. The embedded plate 1 is made of a rectangular thick steel plate, and bolt insertion holes 2 are bored at the four corners. Furthermore, an anchor metal fitting 3 such as a stud bolt is provided protruding from the inner surface of the embedded plate 1.

The bolt 4 is relatively long and has a sharp tip. This bolt 4 is inserted into the bolt insertion hole 2 of the embedded plate 1 from the inside, and the head of this bolt 4 is spot welded to the embedded plate 1.

During assembly, the embedded plate 1 is temporarily attached to the reinforcing bar 5 using a binding wire, the formwork 6 made of plywood is temporarily erected, and when tapped lightly with a hammer, the tip of the bolt 4 becomes sharp. A shallow recess is formed in the formwork 6 at the position of the bolt 4. Then, a drill is applied to the recessed part to make a hole, and then it is built in a predetermined position, the bolt 4 is inserted through the hole in the formwork, the embedded plate 1 is stacked on the inner surface of the formwork 6, and the formwork 6 is It is attached by screwing a nut 7 onto a bolt 4 protruding from the outside.

Next, concrete is poured inside the formwork 6,
After the concrete has hardened, the nuts 7 are removed and the formwork 6 is demolded leaving the embedding plate 1 behind.

This invention has the above-mentioned configuration, and since the embedded plate is temporarily fixed to the formwork with bolts and nuts, it will not come off during concrete pouring or other work. Also, since the bolts protrude outside the formwork, it is possible to prevent forgetting to tighten them. Further, since the tip of the bolt is sharp, the position of the bolt insertion hole can be easily determined.

Further, since bolt insertion holes are drilled at the four corners of the embedded plate, the joint of the formwork can be installed at any position on the embedded plate without any problem.

A further advantage is that the tip of the bolt protruding from the embedded plate attached to the wall surface can be used as it is or by cutting it off and using it together with a nut to attach the device.

[Brief explanation of the drawing]

Figure 1 is a front view seen from the inside of the embedded plate.
FIG. 2 is a sectional view of the installed state. 1...Embedded plate, 2...Bolt insertion hole, 3
...... Anchor hardware, 4... Bolt, 5... Rebar, 6... Formwork, 7... Nut.

Claims (1)

[Scope of utility model registration request] Bolt insertion holes are drilled in the four corners of a rectangular embedded plate with anchor metal fittings protruding from the inner surface.A bolt with a sharp tip is inserted into the embedded plate bolt insertion hole from the inside, and the bolt is inserted into the formwork. An embedded plate mounting device characterized in that the embedded plate is inserted into the mold, the embedded plate is stacked on the inner surface of the form, and a nut is screwed onto the bolt from the outer surface of the form.