JPH0810128Y2 - Anchor bolt retainer - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is an anchor that holds the posture of an anchor bolt when a concrete installation base in which a part of the anchor bolt is buried is formed on a floor slab. Bolt retainer.

[Conventional technology]

Conventionally, this type of anchor bolt retainer has been a plate-shaped body having both ends with a erection portion for erection on the upper end of a concrete formwork, and an anchor bolt attachment hole is formed in the center portion. There was something I did.

[Problems to be solved by the device]

In the above-mentioned conventional technique, concrete to be cast into a mold is hardened together with a holder that is installed on the upper end of the mold and that penetrates the anchor bolt. That is, in the above-mentioned conventional technique, since the holder is installed on the formwork, for a plurality of types of formwork different in shape and size from each other,
There has been an inconvenience that it is necessary to prepare a plurality of types of holders having different shapes and dimensions so as to correspond to each of them.

Further, in the above-mentioned conventional technique, in order to hold the anchor bolt at a predetermined position on the floor slab once set, either the holder or the form moves with respect to the floor slab when concrete is placed in the form. You have to be careful not to
It was a factor that made the placement work difficult.

The object of the present invention is to eliminate the above-mentioned drawbacks found in the prior art.

[Means for solving the problem]

To achieve this purpose, the anchor bolt holder according to the present invention is characterized by a grounding portion for the floor slab,
It is provided with a connection support part for anchor bolts and is embedded in a concrete installation stand.

[Action]

In other words, when forming a concrete installation base with a part of the anchor bolts embedded on the floor slab, install a holding tool that supports the bolt on the connection support part at a predetermined position on the floor slab and hold it. A mold is installed in a form surrounding the periphery of the tool, and concrete is poured into the mold so that at least a part of the anchor bolt and the holding portion are also buried. The retainer should be used until the concrete hardens.
After holding the posture of the anchor bolt and hardening the concrete, it functions as a support member together with the concrete installation stand.

Further, it is desirable that the holder has a structure having an internal space in which the pouring concrete is prevented from flowing when the concrete installation table is formed. With this configuration, it is not necessary to pour the poured concrete to fill the volume of the formwork,
The cost can be reduced by reducing the amount of concrete. Moreover, the concrete cast between the formwork and the holder is
Since the cavity is formed inside, the time required for curing is shorter than in the case where the mold is fully filled, and the workability is improved.

Further, it is preferable that the holder is formed in a cylindrical shape having a bottom portion so that the grounding portion cooperates with the floor slab to form an internal space. According to this structure, in forming the internal space in which the inflow of concrete is blocked, by using the floor slab, it is sufficient to provide only one bottom portion on the holder, and the cost can be further reduced.

[Effect of device]

Therefore, according to the anchor bolt holder according to the present invention, when the concrete installation table in which a part of the anchor bolt is buried is formed on the floor slab, the anchor bolt until the set concrete is hardened is set. While achieving the purpose of maintaining posture, the holder is installed directly on the floor slab instead of being erected on the formwork of the concrete installation stand, so it is suitable for multiple types of formworks with different shapes and dimensions. It is possible to deal with it by preparing only one type of shape and dimension that can be used in common. Therefore, the trouble of preparing a plurality of different types of holders for each mold having different shapes and dimensions is eliminated. In order to hold the anchor bolts in place on the floor slab once set, it is sufficient to take care not to move only the holder with respect to the floor slab when placing concrete into the formwork. Work became easier.

Furthermore, the load bearing performance of the concrete installation table is not inferior as compared with the case where it is cast in a full formwork, because the tubular holder cooperates with the surrounding concrete to support it. It can be made even stronger without.

〔Example〕

 Hereinafter, embodiments of the present invention will be described.

As shown in FIG. 3, the air-conditioning pipe (1), its cover (2), etc., have their legs (4) fixed to a columnar concrete installation stand (5) provided on the floor slab (6). It is mounted and fixed on the frame (3) of the mold.

The concrete installation base (5) has a quadrangular columnar shape whose width becomes wider toward the bottom. Anchor bolts (7) suspended from the upper surface (5a) of the concrete installation base (5) have legs of the base (3). (4) is fastened by the nut (14).

As shown in FIG. 2, the concrete installation stand (5) is arranged in the center of the inside of the mold (8) made of synthetic resin and having a substantially rectangular tube shape with a larger diameter toward the lower side. Then, concrete is placed between the holding member (9) made of sheet metal, which is also in the shape of a rectangular tube, and is molded.

The holder (9) includes a grounding portion (9d) for the floor slab (6), and as shown in FIG.
Due to the cooperation of the grounding part (9d) and the floor slab (6), the internal space (S) in which the pouring concrete is prevented from flowing during the formation of the concrete installation base (5) is inserted into the holder (9). Can be formed.

As shown in FIG. 1, the bottom (9b) of the holder (9) has a hexagonal hole (10) with a bottom into which a nut (12) is fitted.
2 side-by-side, and place the bottom part (10
An anchor bolt (7) insertion hole (11) is formed in a), and thus a connection support portion (9a) for the anchor bolt (7) is formed.

That is, the holder (9) forms the concrete installation table (5) by inserting the anchor bolt (7) into the insertion hole (11) and tightening the nuts (12) and (13). In this case, the posture of the anchor bolt (7) embedded in the concrete is maintained until the concrete is hardened.

[Another embodiment]

1. In the above embodiments, the holder (9) has a rectangular tubular shape with a bottom, but the holder (9) may have any tubular shape, for example, a cylindrical shape. It can be one.

2. In the previous embodiment, the holder (9) has a cylindrical shape, but it may have a columnar shape with a narrow inside. In this case, the connection support portion (9a) can be configured by forming a screw hole for fastening the anchor bolt (7) in the columnar end portion.

3. In the previous embodiment, the holder (9) has been described as having a bottom (9b) at one end of a rectangular tubular body, but the position of the bottom (9b) is in the axial direction of the tubular body. It is optional. For example, as shown in FIG. 4, the bottom part (9b) is formed in the middle part of the tubular body.
May be provided.

4. In the previous embodiment, the holder (9) was made of sheet metal, but the holder (9) may be made of hard synthetic resin.

5. In the previous embodiment, the connecting support portion (9a) is replaced by the holder (9).
It was configured on the bottom (9b) of the, but as shown in FIG.
Separately connect the support (9a ') to the bottom (9) of the holder (9).
b), the side part (9c) and the like.

6. In addition, although reference numerals are added to the section of the claims for utility model for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by the entry.

[Brief description of drawings]

The drawings show an embodiment of a holder for an anchor bolt according to the present invention. Fig. 1 is a partially cutaway perspective view of the holder, Fig. 2 is a sectional view of the holder, and Fig. 3 is a supporting and fixing of air-conditioning piping. FIG. 4 is an overall front view of the structure, and FIGS. 4 and 5 are cross-sectional views of a holder showing another embodiment. (5) …… Concrete installation stand, (7) …… Anchor bolt, (9) …… Holder, (9a) …… Coupling support, (9
d) …… Grounding part, (S) …… Internal space.

Claims (3)

[Scope of utility model registration request] 1. An anchor for holding the posture of the anchor bolt (7) when a concrete installation table (5) in which a part of the anchor bolt (7) is buried is formed on a floor slab (6). A bolt retainer, which comprises a grounding portion (9b) for the floor slab (6) and a connection support portion (9a) for the anchor bolt (7), and is embedded in the concrete installation table (5). Anchor bolt retainer. 2. The anchor bolt holder according to claim 1, further comprising an internal space (S) in which the pouring concrete is prevented from flowing when the concrete installation table (5) is formed. 3. The grounding part (9d) is formed in a tubular shape having a bottom part (9b) so as to form the internal space (S) in cooperation with the floor slab (6). Anchor bolt holder described in 2.