JPH088194Y2 - Anchor bolt that can be fixed to the formwork - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention relates to an anchor bolt used when placing concrete in a building, which is used as a foundation of a building or the like and is used as an anchor when placing concrete. The present invention relates to an anchor bolt that can be fixed to a mold that holds the bolt at a predetermined position.

(Prior Art) Conventionally, a reinforcing bar is put into the foundation concrete of a building or the concrete of a floor or a ceiling, and as shown in FIG. An anchor bolt (A ') provided with a screw groove (5) and a nut (6) is provided on the upper side to fix the foundation or the like to the foundation concrete or the like. Then, the anchor bolt (A ') is attached to the reinforcing bar by a wire or the like, and then concrete is poured into the form and placed. However, the anchor bolt (A ') was pushed by the flow when pouring concrete and was displaced from a predetermined position.

(Problems to be Solved by the Invention) As described above, the conventional anchor bolt (A ') shown in FIG.
Is unstable with its tip bent only a short length,
In addition, since it is not fixed to the formwork because it is attached to the rebar with wire and is not fixed to the form, it was displaced from the predetermined place due to the flow of the concrete when it was placed.
For this reason, the anchor bolt has to be returned to a predetermined position and adjusted so as to fit the base, which is troublesome and complicated, resulting in a reduction in work efficiency.

The present invention eliminates the above-mentioned drawbacks, and in a stable state on a formwork, firmly fixed to it, so as to maintain a predetermined state when pouring concrete and placing it,
It is intended to provide an anchor bolt that can be fixed to a formwork.

(Means for Solving the Problems) The present invention intends to solve the above-mentioned problems by the following configurations. That is, the anchor bolt that can be fixed to the formwork is composed of an embedding part that is embedded in the concrete when pouring concrete, a projecting part that projects from the concrete surface, and a fixing part that connects the fixing tool of the formwork. Is substantially L-shaped and is composed of a vertical portion and a horizontal portion, a protrusion is provided on the vertical portion, and the fixing portion is provided so as to protrude downward from the horizontal portion. .

In the above, the embedded portion embedded in the concrete floor or ceiling is formed in a substantially L shape. This is to increase the stability and strength of the anchor bolt. It is sufficient that the lateral length of the embedded portion has a length sufficient to maintain stability. For that purpose, the length in the horizontal direction is close to or more than half of the length in the vertical direction, and stability and strength at the time of placing concrete are greatly increased as compared with the conventional one.

There is a protruding part that fixes the base above the embedded part,
A screw groove is engraved and it is designed to be tightened with a nut.

The fixing portion projects below the embedded portion from the lower side of an arbitrary portion downward (toward the mold side). In this case, it is common to attach to the lower side of the vertical portion. Further, the lower part of the fixing portion is integrally fixed in the order of the cap, the cap fastener, the mold, and the mold fastener.

The thickness of the fixing portion may be slightly thinner than the embedded portion that is the body of the anchor bolt or the protruding portion.

(Operation) In the anchor bolt of the present invention, the protruding portion and the embedded portion are substantially L-shaped, the fixing portion projects downward, and the cap, the cap fastener, the mold, and the Since the mold fixtures and molds such as mold clamps are provided, even when concrete is flowed and placed, the anchor bolts are held in place without being washed by the concrete. .

(Embodiment) An embodiment of the present invention will be described with reference to the drawings.

1 to 5 show the first embodiment.

FIG. 1 is a side view of a first embodiment of the present invention, which is composed of a vertical vertical portion (1A) and a horizontal horizontal portion (1B), and a protruding portion (2) above it, A screw groove (5) is engraved around it and a nut (6) is screwed.

Below the vertical part (1A) of the embedding part (1), a fixing part (3), which is slightly thinner than the embedding part (1), is fixed by welding, and there are two welding points (4). Fixed part (3)
In the portion protruding below the embedded portion (1) of
A screw groove (5) is engraved on the periphery.

This is the anchor bolt (A) of the present invention.
When pouring concrete using, the cap (7) is fitted to the fixing portion (3) of the anchor bolt (A) as shown in FIGS. A cap fastener (8) having an inner screw groove on the upper side, a rod shape on the lower side, and a screw groove (5) on the outer side is screwed. Next, the rod-shaped portion of the cap fastener (8) and the screw groove (5)
The part with the mark is passed through the insertion hole (10) of the form (9) to penetrate, and a part thereof is projected.

Next, there is a mold support tool (12) on the upper side, and an inner screw groove (5 ') inside the cylindrical portion below it, which is screwed with the screw groove (5) of the cap fastener (8). When worn, it looks like Figure 3.

FIG. 4 shows the use of the anchor bolt (A) of the present invention.
It is a perspective view in the case of pouring concrete on a ceiling and a floor just before pouring. Anchor bolt (A) is rebar (15)
It is installed in any of the above.

Next, as shown in Fig. 5 (a), concrete (13) is placed slightly above half of the anchor bolt (A), and when the concrete (13) is solidified, the form clamp (1
1), the form (9), the cap fastener (8), and the cap (7) are sequentially removed, and the nut (6) is tightened and fixed by passing through the insertion hole of the base above the anchor bolt (A). Incidentally, it is the same as the conventional method that the place where the cap (7) was present is filled with concrete later for repair. In the figure (b), reference numeral 13a is a cloth foundation, 13b is a foundation, and the construction method for constructing the foundation higher than the ground (GL) in this way has been generally performed in the Hokkaido region.
The inner space of the foundation 13b is often used as a garage or the like.

In this way, the anchor bolt (A) is firmly influenced by the flow of the concrete (13) because the fixing portion (3) of the anchor bolt (A) is firmly fixed to the formwork (9) when the concrete (13) is poured. Instead, it is what is retained.

FIG. 6 is a perspective view of an anchor bolt (A) according to a second embodiment of the present invention. In this embodiment, the fixing portion (3) is welded to the lateral side (1B) of the anchor bolt (A) by welding at approximately half thereof. This point is different from the first embodiment, and the other points are the same. Thereafter, concrete is poured in the same manner as in the first embodiment.

This may be necessary depending on the location of the concrete or foundation.

FIG. 7 is a perspective view of an anchor bolt according to a third embodiment of the present invention. In this embodiment, the fixing portion (3) is welded to the side surface of the anchor bolt (A) by welding at the tip of the lateral portion (1B). This point is different from the first and second embodiments. Hereinafter, the first
Concrete is poured in the same manner as in the embodiment.

This may be necessary depending on the location of the concrete or foundation.

Although the fixing portion (3) is welded later in the above embodiment, it may be integrally formed in advance at the same time as the embedded portion (1) of the anchor bolt (A).

(Effects of the Invention) An anchor bolt that can be fixed to a formwork according to the present invention is an embedded part that is embedded in concrete when pouring concrete, a protruding part that protrudes from the concrete surface, and a fixing part that protrudes to the formwork side. Since the embedded part has a substantially L shape and consists of vertical and horizontal parts, it is stable when pouring concrete and afterwards, and since there are more horizontal parts than before, it is an anchor The strength of the bolt is getting stronger.

Further, since the fixed portion of the mold is provided so as to project downward from the lateral portion, and the lower portion of the fixed portion is integrally fixed in the order of the cap, the cap fastener, the mold and the mold fastener,
The anchor bolt holds its predetermined position even when pouring concrete.

Therefore, there is no need to tie the anchor bolt to the reinforcing bar or return it to a predetermined position as in the conventional method, labor is not complicated, work efficiency is good and economical, and it is particularly useful in a construction method for constructing a foundation higher than the ground. Is.

The fixing portion of the anchor bolt is also extremely convenient because it can be provided at an arbitrary position below the lateral portion of the anchor bolt, depending on the place where the anchor bolt is used.

[Brief description of drawings]

The drawings are embodiments of the present invention, FIGS. 1 to 5 are the first embodiments of the present invention, FIG. 1 is a perspective view of the first embodiment of the present invention, and FIG. It is a partial longitudinal disassembly side view at the time of using the thing of a figure, FIG. 3 is a combination side view of FIG. 2, FIG. 4 is a perspective view before pouring concrete using this Example. Fig. 5 (a) is a partial vertical perspective view of the case where concrete is poured, the mold fixture is removed and the base is fixed, and Fig. 5 (b) is the case where concrete is poured. FIG. 6 is a cross-sectional view showing the whole, and FIG. 6 shows a second part in which a fixing portion is provided at approximately half of a lateral portion.
FIG. 7 is a perspective view of an embodiment, FIG. 7 is a third embodiment in which a fixing portion is provided at a tip of a lateral portion, and FIG. 8 is a side view of a conventional anchor bolt. A: Anchor bolt A '... Conventional anchor bolt 1 ... Embedded part 1' ... Tip bending part 1A ... Vertical part 1B ... Horizontal part 2 ... Projection part 3 ... Fixed part 4 ... Welding part 5 ... Screw groove 5 '... Inner screw groove 6 ... Nut 7 ... Cap 8 ... Cap clamp 9 ... Formwork 10 ... Insert hole 11 ... Formwork clamp 12 ... Formwork support 13 …… Concrete 14 …… Base 15 …… Reinforcing bar

Claims (1)

[Scope of utility model registration request] 1. An embedding part that is embedded in concrete when pouring concrete, a projecting part that projects from the concrete surface, and a fixing part that projects to the formwork side. The embedding part is substantially L-shaped from a vertical part and a horizontal part. Shaped like a protrusion, the upper portion of the vertical portion is a protruding portion, the fixing portion is protruded downward from the horizontal portion, and a cap is fitted, and a cap fastener is screwed to the lower portion thereof, and a rod-shaped lower portion of the cap fastener is formed. An anchor bolt that can be fixed to a mold, wherein the anchor bolt penetrates the mold and is screwed with a mold clamp.