JP2002070032A - Holding tool of anchor bolt in case of placement of footing concrete - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a product suitable for a holding tool in the case that a footing concrete of an anchor bolt in connected to a hold-down hardware is placed. SOLUTION: An engaging frame 2 is set to a bearing lever 5 of a holding tool body erecting the bearing lever 5 on a pair of bearing basic frames 4 and 4 having an L-shaped section overlapping each other on the inside of a footing concrete form panel H. A set hole 7 for the anchor bolt B press- contacting the front end of a clamping screw 3 screwing and passing through the engaging frame 2 through the bearing lever 5 is formed in the engaging frame 2. One side edge 6 of a mounting piece 4b is used as a straight edge-shape making at right angles to an axis of the clamping screw 3, a clearance between an extended line of one side edge 6 and the anchor bolt B when it is set in the set hole 7 is made as (a) and a clearance between the side fixing the hold- down hardware of a column set on the side of one side edge 6 and the anchor bolt connection receiving hole provided to the hold-down hardware is made as (b), and a relation of (a)=(b) is established.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a concrete structure of a wooden building, which is buried in the lower part of the foundation concrete and connected to a hole-down hardware (pull-down hardware) fixed to a pillar through a base placed on the basic concrete. The present invention relates to an anchor bolt holding tool for holding an anchor bolt (for hole-down hardware) used for firmly fastening the column to a base or foundation concrete at the time of casting the foundation concrete.

[0002]

2. Description of the Related Art In recent years, so-called hole-down hardware (pull-down hardware) is used by being fixedly attached to a pillar and connected to an anchor bolt erected on the foundation concrete to firmly fasten the pillar to a base or foundation concrete. Although it is used for wealth, for example, it is almost standardized as listed as one of the Z mark hardware, and therefore, the arrangement relationship of the anchor bolts fixed to the column is almost constant Therefore, when anchor bolts for hole-down hardware are fixed and erected on the foundation concrete at the time of casting, when the anchor bolts are attached to the side surfaces of the pillars of the hole-down hardware, the anchor bolts with respect to the foundation concrete are assumed. It is necessary to determine the standing position and hold the concrete poured into the concrete form until it dries. The shall example JP 11
Japanese Unexamined Patent Publication No. 323952 discloses a structure.

[0003]

The above publication is suitable for holding the anchor bolts until the foundation concrete dries, but no consideration is given to the positioning of the anchor bolts with respect to the installation position. .

For example, not only the straight part of the foundation concrete but also the anchor bolts connected to the hole-down hardware fixed to the pillars arranged at the corners of the T-shaped part or the cross part correspond to the hole-down hardware at the time of concrete casting. The work of arranging (positioning) at a position is complicated, such as creating a special scale, and the workability is poor.

The present invention has been devised in order to provide a product suitable as a holder for placing anchor bolts connected to such hole-down hardware at the time of foundation concrete casting.

[0006]

SUMMARY OF THE INVENTION A cross section L consisting of a vertical engaging piece superimposed on the inner surface of a foundation concrete formwork panel and a horizontal mounting piece mounted on said formwork panel.
A support rod is constructed by bridging a support rod on the engaging piece of the pair of support base frames having a letter shape, and the support rod of the retainer body is vertically connected to the upper and lower sides of the vertical piece. An engaging frame provided with a part is positioned on one side of a pair of side edges where the vertical part is opposed via the support rod of the placing part, and the support rod is moved vertically. The mounting holes of the anchor bolts, the ends of which are screwed through the vertical pieces of the engagement frame and screwed through the support rods, are attached to the engagement frame so as to be interposed therebetween. Formed on the upper and lower pieces, the one side edge of the mounting piece was formed as a right edge perpendicular to the axis of the fastening screw, and was assembled to the extension of the one side edge and the mounting hole. When the shortest separation distance from the anchor bolt is a, the side of the column arranged on the one side edge side to which the hole down metal is fixed and the hole down Assuming that the shortest separation distance from the anchor bolt connection receiving hole provided on the object is b, a relationship of a = b is used as a basic means, and other relations to one side edge of the mounting piece are made. When one side edge is stepped, a protruding straight edge and a concave straight edge are provided, and an extension of the protruding straight edge or an extension of the recessed straight edge and the assembling hole are used. C is the shortest separation distance from the anchor bolt, d is the shortest separation distance between the extension line and the side surface on which the hole down metal is fixed, and the other side surface of the column. Assuming that the shortest separation distance from the anchor bolt connection receiving hole provided in the hole-down metal member is b, the relation of b = c + d is added to the T-shaped portion or the cross portion of the foundation concrete. A product suitable for use in a corner can be provided.

Note that the relationship of a = b or b = c + d does not mean that they are strictly equal, and the point is that when the anchor bolt is held using the holder and erected on the foundation concrete, This means that the anchor bolt and the hole-down metal-side receiving hole can be arranged at a position where there is no inconvenience.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view, FIG. 2 is a front view, FIG. 3 is a perspective view, and FIG. FIG. 5 is a plan view showing the relationship between the pillars of the corner portion of the foundation concrete, and FIG. 6 is a plan view showing the relationship between the pillars of the corner portion of the foundation concrete. FIG. 7 is a side view showing the relationship between the hole-down hardware and the anchor bolt.

[0009] The holder A of the embodiment is a base concrete c
An anchor for a hole-down metal fitting a used to connect the hole p to the hole-down metal fitting (pull-down hardware) a fixed to the pillar p through the base b placed on the base b and to firmly fasten the pillar p to the base b to the foundation concrete c. In order to previously erect the bolt B on the foundation concrete c, the foundation concrete c
It is used for holding (supporting) the lower side by inserting it into the mold frame H at the time of casting, and is composed of a holder main body 1, an engaging frame 2, and a tightening screw 3, and these are assembled with an anchor bolt B. And used as described above.

The anchor bolt B need not be limited to the hole-down metal member a, but is used only for fastening the base b to the foundation concrete c, for example (meaning that the anchor bolt is held). At).

The holder main body 1 has a pair of support base frames 4 and 4 having an L-shaped cross section, each of which comprises an engaging portion 4a arranged in a vertical direction and a mounting portion 4b arranged in a horizontal direction. , 4a, and a support rod 5 having a rectangular cylindrical shape is provided between the side frames H 'and H'. The part 4a is inserted), and the placing part 4b is placed between the side frames H 'and H' so as to be placed on the side frame H '.
H 'is provided with an engagement frame 2 attached to the support rod 5 existing between H', and one side of a pair of side edges of the mounting piece 4b of the support base frame 4 facing each other via the support rod 5 The edge 6 is formed as a straight edge perpendicular to the screwing direction of the fastening screw 3 with respect to the vertical piece 2 a of the engagement frame 2, and the other side edge 6 ′ facing the one side edge 6 is formed with the fastening screw 3. The protrusion is formed in a stepped shape in the screwing direction to have a protruding direct edge 6′A and a concave direct edge 6′B.

The engagement frame 2 is composed of the vertical piece 2a and an upper piece 2b and a lower piece 2b 'which are continuously provided on the upper and lower sides of the vertical piece 2a. The support rod 5 is attached to the holder body 1 so that the support space 5 is interposed therebetween.
The upper and lower pieces 2b, 2b '
Are provided with assembling holes 7, 7 through which the anchor bolts B are inserted. The vertical piece 2a is provided with a screw at a position orthogonal to the axis of the anchor bolt B penetrated through the assembling holes 7, 7. A hole 8 is provided.

As described above, the engaging frame 2 and the holder main body 1 are connected to each other such that the support rod 5 of the main body 1 is interposed between the upper piece 2b and the lower piece 2b 'of the engaging frame 2. The holding member A is assembled by assembling, and the vertical piece 2a (the base of the upper and lower pieces 2b, 2b ') is disposed on one side edge 6 side of the placing piece 4b, and the upper and lower pieces 2b. , 2b 'are on the other side edge 6
The holder main body 1 and the engagement frame 2 are assembled to each other so as to be located on the 'side.

In such an assembling (arrangement) relationship, the shortest separation distance between the extension line of the one side edge 6 and the (an axis of) the anchor bolt B when assembled in the assembling hole 7. A, a side surface p ′ of the column p disposed on the one side edge 6 side, to which the hole-down metal member a is fixed, and a receiving hole (substantially at the center) for connecting an anchor bolt provided in the hole-down metal member.
When the shortest separation distance from n is b, a relationship of a = b is established, and another side edge 6 ′ opposite to one side edge 6 of the mounting piece 4 is provided in a stepped manner. The shortest separation distance between the extension of the straight edge 6′A or the recessed straight edge 6′B and the (an axis of) the anchor bolt B when assembled in the assembly hole 7 is c, and the extension and the extension The shortest distance between the column p arranged on the other side edge 6 'side and the side surface p' to which the hole-down hardware a is fixed is d, and the side surface p 'of the column p and the hole-down metal a are provided. Assuming that the shortest separation distance from the (nearly the center of) the receiving hole n for connecting the anchor bolt B is b, the relationship is b = c + d.

The screw hole 8 is formed by fixing a nut material to the vertical piece 2a at a position corresponding to the through hole formed in the vertical piece 2a.

The through hole 9 provided at the center of the mounting piece 4b of the support base frame 4 is used for applying a metal form H to the wooden form in place of the metal form H of the embodiment. It is a through hole for nail attachment for fixing.

Although the tightening screw 3 has a wing bolt shape, this is for convenience in operation, and a normal hexagonal head bolt may be used.

The upper and lower pieces 2b, 2b
螺 Pull the screw rod 10 to one corner of the free end side of the
1 is screwed and assembled to maintain the assembled state of the holder main body 1 and the engagement frame 2 during transportation or storage.

It is preferable to use a mark for indicating the position of the foundation concrete c in the width direction on the surface (upper surface) of the support rod 5 by engraving means or the like.

Thus, the foundation concrete c (form H)
The holder is set at a position where the extension line of the side surface p 'of the pillar p disposed on the straight portion T of the side to which the hole-down metal piece a is fixed and the one edge (right edge) 6 of the mounting piece 4 coincides. A is placed on the side frame H ′ of the mold H in the placing pieces 4 and 4 and is fixed at the position (in the case of the embodiment, the separation distance between the placing pieces and the side frames H ′, H (The diameters between the 'are the same, so that they are fixed only by engaging the engaging piece 4a in the mold H.) The anchor bolt B is penetrated into the mounting hole 7 to tighten the tightening screw 3. When fixed (FIG. 4), the one side edge 6 and the mounting hole 7
Separation distance from the anchor bolt B engaged with the
′ And the hole n of the anchor bolt B provided on the hole-down metal member a fixed to the side surface p ′ are made to have the same separation distance, so that the anchor bolt B is positive in relation to the hole-down metal member a. It is to be erected on the foundation concrete c.

As shown in FIGS. 5 and 6, the column p disposed at the corner L of the foundation concrete c (the form H) faces the side surface p 'on the side where the hole-down hardware a is fixed. , One projecting edge 6 ′ of one edge 6 ′ of the mounting piece 4
'A (FIG. 5) or the recessed right edge 6'B (FIG. 6) is aligned with the edge H'a of the side frame A' of the mold A.
4 is placed on the side frame H ′ of the mold H, and the fastening screw 3 is tightened to fix the anchor bolt B in the same manner as shown in FIG. C + d, which is the sum of the separation distance c between the extension line of the insertion straight edge 6′B and the anchor bolt B attached to the attachment hole 7 and the separation distance d between the extension line and the side surface p ′, is the side surface p. Is set to be equal to the separation distance b between '' and the receiving hole n, so that the anchor bolt B is erected on the foundation concrete c at the normal position in relation to the hole-down hardware a.

The reason why the protruding direct edge 6'A and the protruding direct edge 6'B are selectively used so as to be coincident with the edge H'a is to selectively use them in accordance with the diameter of the column. 120
In the case of a corner, the protruding right edge 6′A is used (FIG. 5), and in the case of the pillar 105, the recessed right edge 6′B is used (FIG. 6).

[0023]

Since the present invention has the configuration as described above,
By arranging the anchor bolts at positions corresponding to the hole-down hardware, the anchor bolts can be easily erected on the foundation concrete.

[Brief description of the drawings]

FIG. 1 is a plan view.

FIG. 2 is a front view.

FIG. 3 is a perspective view.

FIG. 4 is a plan view showing the relationship between a straight part of a foundation concrete and a column.

FIG. 5 is a plan view showing the relationship between corners of a foundation concrete and columns.

FIG. 6 is a plan view showing a relationship between corners of a foundation concrete and columns.

FIG. 7 is a side view showing the relationship between the hole-down hardware and the anchor bolt.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Holder main body 2 Engagement frame 3 Tightening screw 4 Support base frame 5 Support rod 6 One side edge 6 'The other side edge 7 Assembly hole B Anchor bolt H Form panel a Hole down hardware p Column p' Side

Claims (2)

[Claims] 1. A pair of supports having an L-shaped cross section each comprising a vertical engaging piece to be superimposed on an inner surface of a foundation concrete formwork panel and a lateral mounting piece to be placed on the formwork panel. A support rod is provided by bridging a support rod on the engaging piece of the base frame, and the support rod of the retainer main body is provided with upper and lower pieces continuously connected to the upper and lower sides of the vertical piece. The engagement frame is such that the vertical piece is located on one side of a pair of side edges opposed to each other via the support rod of the placing piece, and the support rod is interposed between the upper and lower pieces. And an assembling hole for an anchor bolt, in which the tip of a tightening screw threaded through the vertical piece of the engagement frame and pressed into contact with the support rod is formed in the upper and lower pieces of the engagement frame. And forming the one side edge of the mounting piece into a straight edge shape orthogonal to the axis of the tightening screw, and extending the one side edge with the assembly. The shortest separation distance from the anchor bolt when assembled to the hole is a, and the side of the pillar arranged on the one side edge side to which the hole-down metal is fixed and the anchor bolt connection receiver provided on the hole-down metal are provided. A fixture for anchor bolts at the time of placing concrete, where a = b, where b is the shortest separation distance from the hole. 2. A protruding direct edge and a recessed direct edge are provided by making another side edge opposite to one side edge of the mounting portion piece into a step, and an extension line of the protruding direct edge or the protruding direct edge is provided. The shortest separation distance between the extension line of the recessed right edge portion and the anchor bolt when assembled in the assembling hole is c, and the hole-down hardware of the column arranged on the extension line and the other side edge is fixed. D is the shortest separation distance from the side
2. The foundation concrete casting according to claim 1, wherein a relationship of b = c + d is established, where b is the shortest separation distance between the side surface of the pillar and the anchor bolt connection receiving hole provided in the hole-down metal fitting. Anchor bolt retainer at time.