JP2003301562A - Tool for mounting reinforcement joint mold - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently fix an annular sleeve to a mold. <P>SOLUTION: A mounting piece 2 is fitted to the fitting hole selected from a plurality of fitting holes 11 in a seat plate 1. A cap 3 is threaded to the female thread part 41a of a hole part 41 in the sleeve 4 beforehand. The seat plate 1 is fixedly placed on the mold 6. The sleeve 4 having the cap 3 fitted to the lower end thereof is lowered, and the cap is fitted to the engagement part 22 of the mounting piece 2 to mount the sleeve at a specified position. When concrete 7 is placed, deformed bars 5 and the sleeve 4 are buried in the concrete. The mold 6 is removed after the placed concrete 7 is solidified. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jig for attaching a form of a reinforcing bar joint used for fixing a metal annular sleeve of a joint member to which a tip end of a deformed bar is attached to a form.

[0002]

As is well known, at a reinforced concrete construction site, a large number of deformed reinforcing bars are arranged vertically or horizontally or vertically, and then a formwork is attached to each predetermined section before placing concrete. . When the concrete solidifies, these formworks are removed, the next deformed bar is added to the end of the deformed bar exposed on the concrete wall, and new concrete is placed in the section following the section where the concrete has solidified. I am doing it. In many cases, joint means are used as connecting means for the deformed reinforcing bars at this time, but if concrete connections are made after the concrete is placed in order to reinforce the sections that follow it, the joint means The tip of the sleeve, which is a member, abuts on the inside of the mold and is fixed in a positioned state. The tip of the sleeve is exposed by removing the mold after placing the concrete. In this way, the sleeve of the other deformed reinforcing bar is aligned with the tip of the sleeve exposed at the boundary of the concrete after removing the formwork, and both are connected via the connecting bolt.

In order to align deformed rebars with each other,
Attach the sleeve at the tip of the reinforcing bar to the prescribed position of the form,
The form frame is provided with a through hole through which a bolt that can be screwed into the female thread portion of the sleeve can be inserted, and the bolt is screwed and fixed to the female thread portion of the sleeve from the outside of the plate frame through the through hole.

As described above, in order to fix the tip of the deformed bar to the predetermined position of the form, the form must be provided with a through hole through which a bolt can be inserted. The inner diameter of the through hole is considerably large because it needs to be equal to or larger than the outer diameter of the connecting bolt for connecting the deformed bar. Therefore, in order to reuse the formwork, it is often necessary to repair the formwork, and there is a problem in that costs are required. In particular, modern formwork is often used by leasing contracts, and in many cases, the above-mentioned through holes must be completely repaired when returned. For this reason, there is an increasing demand for avoiding the provision of a through hole through which such a large bolt can be inserted in the mold. Even if it is impossible to completely avoid the perforation, it has been desired to make the size of the hole as small as possible so as to endure reuse as it is, or to make repair only by making a small hole.

Therefore, the inventor of the present application does not need to provide a through hole for damaging the form frame or only needs a small mounting hole to fix the end of the deformed bar to the form frame. A jig for attaching the deformed rebar to the wire has been proposed (JP-A-8-354).
626). The structure of this jig is such that the tubular portion is fitted into the female thread portion of the joint sleeve, the collar portion is in contact with the end portion of the sleeve, and the mounting piece is formed so that it can be fitted into the cap. The mounting piece is configured by a mounting screw that directly or indirectly fixes the mounting piece at a predetermined position of the mold.

In the joint sleeve, a length of about half from one end is fixed in advance to the tip of the deformed bar, and a female screw portion capable of screwing a connection bolt from the other end to the length of about half is formed. The cap is a plastic molded product, and by inserting the cap into the female screw portion of the sleeve, the mounting piece can be easily inserted and the female screw portion of the sleeve can be protected. Further, the mounting piece is formed into a cylindrical body that can be fitted into the cylindrical portion of the cap, and has a center hole formed with an insertion hole into which a mounting screw can be inserted.

When the above-mentioned mounting piece is fixed to a predetermined position of the form via a mounting screw, a cap is fitted to the female thread portion of the sleeve, and the tip of the sleeve is aligned and inserted into the mounting piece. The sleeve located at the tip of the deformed bar is fixed at a desired position. When using a steel plate mold and avoiding providing a screw hole in the mold, it is preferable to fix it through a seat plate having a female screw hole in the center of which a mounting screw can be screwed. This seat plate is attached to a form via an adhesive with the attachment piece attached, and after removing the form, this is removed. When the mold is made of wood such as a control panel, wood screws are used as the mounting screws, and the mounting piece is directly fixed to the mold via the wood screws.

[0008]

According to the above-mentioned conventional technique, in order to fix the mounting piece at a predetermined position of the mold with a mounting screw, a scoring line is drawn on the mold and a hole is made at this predetermined position. It is positioned. However, such pre-work is extremely complicated because it is necessary to position each of the joint sleeves fixed to the lower end of many rebars at predetermined positions, and therefore, it is strongly desired to improve the efficiency of the fixing work. ing.

Therefore, an object of the present invention is to provide a jig for attaching a deformed rebar to a formwork, which is used for efficiently fixing the metal annular joint sleeve fixed to the tip of the rebar to the formwork. To provide.

[0010]

A first feature of a jig for mounting a formwork of a reinforcing bar joint according to the present invention is that it comprises a seat plate, a mounting piece and a cap, and the seat plate is a long member having a predetermined length. -Like shape, with a plurality of fitting holes formed at predetermined intervals, the fitting piece can be fitted into the fitting hole, and the engaging portion of the fitting piece has a predetermined length from the upper surface of the seat plate. Protruding, the cap is engageable with the engaging portion of the mounting piece,
In addition, it can be fitted into the hole at the lower end of the joint sleeve.

A second aspect of the invention is characterized in that the seat plate is made of synthetic resin.

A third aspect of the present invention is characterized in that both end portions of the seat plate along the longitudinal direction are tapered surfaces that spread downward.

A fourth aspect of the present invention is characterized in that both ends of the seat plate in the longitudinal direction have a joint structure for connecting a plurality of seat plates to each other in the longitudinal direction.

A fifth aspect of the present invention is characterized in that the fitting hole has an inner shape of an expanded portion having an opening on a bottom surface and a contracted portion having an opening on an upper surface and communicating with the expanded portion. The mounting piece is composed of a base portion and an engaging portion standing upright from the base portion, and the mounting piece can be fitted in the fitting hole. In this fitted state, the base portion of the mounting piece is It fits into the expanded portion of the fitting hole, and the engaging portion of the mounting piece penetrates the reduced portion of the fitting hole and projects from the upper surface of the seat plate for a predetermined length. The tip of the engaging portion of the piece can be engaged with the hole of the lower end of the joint sleeve.

According to a sixth aspect of the present invention, the cap includes a tubular portion and a collar portion, and the tubular portion is fitted in a hole portion at a lower end of the sleeve, and the collar portion is a tip portion of the sleeve. It is possible to abut.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. A jig for attaching deformed rebar to a formwork according to the present invention, as shown in FIGS. Metal joint sleeve 4 fixed to the tip of 5
Is fixed to a predetermined position of the mold 6 via this jig, and this structure can be roughly classified into a seat plate 1, a mounting piece 2 and a cap 3.

To explain each structure, first, the seat plate 1 is integrally formed of synthetic resin, and its shape is a predetermined length, for example, 510 mm in the longitudinal direction, as shown in FIG. In the width direction, it is one long piece of 50 mm, and a plurality of fitting holes 11 are formed at predetermined intervals, for example, 25 mm intervals on the center line in the longitudinal direction of this seat plate. Both ends along the longitudinal direction of the seat plate 1 are shown in FIGS.
As shown in FIG. 5, the tapered surfaces 12 and 12 spread downward.

Further, at both ends of the seat plate 1 in the longitudinal direction, a joint structure for connecting the plurality of seat plates 1 to each other in the longitudinal direction, for example, dovetail joints 13 and 14 as shown in FIG. 1, is formed. Of course, a sickle joint may be used instead of the dovetail joint.

The internal shape of the fitting hole 11 is, as shown in FIG. 2, an expanded portion 11a which is opened on the bottom surface of the seat plate 1 and an open portion which is opened on the upper surface of the seat plate and communicates with this expanded portion. Reduced part 1
1b, the expanded portion 11a has a diameter of 20 mm and a depth (height) of 3 mm.
The inner diameter of 1b is 6.5 mm and the height is 3 mm.

A fitting piece 2 can be fitted into the fitting hole 11, and the fitting piece is made of metal or plastic, and its shape is a base portion 21 as shown in FIG.
And the engaging portion 22 provided upright from the base portion. The base portion has a diameter of 20 mm and a thickness of 3 mm in this embodiment, and the size of the engaging portion 22 is Its diameter is 6 mm and its height is 7 mm. Then, the engaging portion 22
A screw portion 22a is engraved on the upper half of the outer periphery of the.

When the mounting piece 2 is fitted in the fitting hole 11, as shown in FIG. 3, the base portion 21 of the fitting piece is fitted in the expanded portion 11a of the fitting hole, and The engaging portion 22 penetrates through the reduced portion 11b of the fitting hole,
Further, a predetermined length from the upper surface of the seat plate 1, 4 mm in this embodiment
Is protruding by the length of.

The cap 3 is made of plastic (polyethylene), and has a tubular portion 31 and a collar portion 32 integrally formed with each other. A female screw portion 31a is formed on the inner and outer peripheral surfaces of the tubular portion. A male thread portion 31b is formed. Then, as shown in FIG. 5, the tubular portion 31 of the cap 3 can be fitted into the tip end portion of the engaging portion 22 of the mounting piece 2, and as shown in FIG. It can be fitted from the lower end opening. One of the specific examples is that the internal thread portion 31a of the cylindrical portion 31 of the cap 3 can be engaged with the thread portion 22a of the mounting piece 2, that is, without being screwed, it is a so-called snap fit patching stop. And the threaded portion 31b on the outer periphery of the cap is screwed into the female threaded portion 41a of the hole portion 41 of the joint sleeve 4, and in this screwed state, the collar portion 32 forms the flange portion 32.
Can contact the lower end surface of the.

Next, the operation of fixing the joint sleeve 4 to the form 6 will be described with reference to FIGS.

As shown in FIG. 3, the lower end of the deformed reinforcing bar 5 is located at the upper end of the hole 41 of the metal annular joint sleeve 4 which is an element of the reinforcing bar joint within a predetermined length range.
Is attached to the sleeve 4 by pressure bonding. The sleeve 4 is obtained by cutting a cylindrical steel pipe into a predetermined length, and an internal thread portion 41a is engraved in a range of a predetermined length of the hole 41 from the lower end of the sleeve.

Based on the design drawing, a plurality of fitting holes 11 of the seat plate 1
The mounting piece 2 is inserted from the lower surface into each of the fitting holes selected from and fitted. Next, the cap 3 is fitted to the engaging portion 22 of the mounting piece 2 protruding from the upper surface of the seat plate 1. Further, as shown in FIGS. 2 and 4, in the case where the screw portion 31b is formed on the tubular portion 31 of the cap 3, this screw portion 31b is screwed into the female screw portion 41a of the hole portion 41 of the sleeve 4 in advance. You may let me. The tubular portion 31 of the cap 3 is screwed onto the female screw portion 41a of the sleeve 4 to cover the inner peripheral portion thereof, and the collar portion 32 is in contact with the tip end surface of the sleeve 4. The cap 3 may be screwed into the joint sleeve 4 first, and then the engaging portion 22 of the mounting piece 2 may be fitted into the cap.

As shown in FIG. 4, the seat plate 1 is placed and fixed on the form frame 6. This fixing method is used when the formwork 6 is made of wood such as plywood (control panel).
Can be fixed directly to this form via wood screws. However, when the mold 6 is made of steel and it is unfavorable to provide a screw hole or the like in the mold, the seat plate 1 is temporarily fixed to the mold 6 with an adhesive for positioning. In addition, a plurality of seat plates 1 are arranged in the longitudinal direction with respect to each other, and dovetail joints 13 having a joint structure,
By 14, the connection is made and the length with respect to the form 6 is dealt with.

The joint sleeve 4 with the cap 3 fitted to the lower end is lowered from the state shown in FIG. 4, and the cap is fitted to the engaging portion 22 of the mounting piece 2 to bring the sleeve into a predetermined position. Install.

In the same manner, when the joint sleeves 4 of the other deformed reinforcing bars 5 are all attached to the seat plate 1 and then concrete 7 is placed as shown in FIG. 5, the deformed reinforcing bars 5 and the joint sleeve 4 are It is buried in concrete. Since the sleeve 4 is attached to the seat plate 1 by the attachment piece 2 and the cap 3, the sleeve is not displaced during the concrete pouring. Then, when the formwork 6 is removed after the cast concrete 7 is solidified, the seat plate 1 and the mounting piece 2 are removed together with the formwork 6, as shown in FIG. At this time, since the seat plate 1 has the tapered surfaces 12 and 12, the seat plate can be easily separated from the concrete 7. Further, even if the cap 3 remains in the hole portion 41 of the sleeve 4, the flange 32 is utilized by utilizing the flange portion 32.
taken out from a.

Since the seat plate 1 is fixed to the mold 6, it is easy to peel the seat plate from the mold. The mold 6 can be reused for the next construction without repair, and each element of the seat plate 1, the attachment piece 2, and the jig of the cap 3 can be reused.

As a joint for deformed rebar, a joint sleeve that is crimped to the rebar is used. Instead of this sleeve, the female thread portion of the sleeve is screwed onto the male thread portion engraved at the tip of the rebar. Even when a combined nut is adopted, the same effect can be obtained by the application of the present invention, so the sleeve also includes such a nut.

[0031]

According to the present invention, the seat plate is an elongated member having a predetermined length, and a plurality of fitting holes are formed at predetermined intervals, and the fitting pieces can be fitted into the fitting holes. The engaging portion of the mounting piece projects a predetermined length from the upper surface of the seat plate, and the cap is engageable with the engaging portion of the mounting piece and is fitted into the hole at the lower end of the joint sleeve. This is possible and facilitates and speeds up the work of fixing the sleeve to which the reinforcing bars are fixed to the positioned position of the mold.

Also, since it is not necessary to make a large hole in the mold as in the prior art, the damage to the mold can be remarkably reduced, so that no repair or easy repair is possible, and the mold can be reused. It can be reduced.

When the seat plate is fixed to the steel frame with an adhesive, it is not necessary to make a hole in the frame, so that it can be returned without repair in the case of a leased product.

Further, if the seat plate is fixed to the form frame with a small screw such as a wood screw or a nail, when the form frame is made of wood, only a small hole such as a small screw hole is left, so that the minimum number is required. It can be reused with no or only minor repairs.

Further, since the seat plate is made of synthetic resin, it bends when it is removed, and it is easy to remove. In particular, this removal operation is further facilitated when both end portions along the longitudinal direction of the seat plate have tapered surfaces that spread downward. Further, if both ends of the seat plate in the longitudinal direction have a joint structure that connects a plurality of seat plates to each other in the longitudinal direction, it is easy to adapt the length of the form by joining the seat plates.

[Brief description of drawings]

FIG. 1 is a plan view of a seat plate.

FIG. 2 is a development view of a seat plate, a mounting piece, and a cap, which is enlarged along the line aa in FIG.

FIG. 3 is a development view of a seat plate, a mounting piece, a sleeve to which a cap and a reinforcing bar are fixed.

FIG. 4 is a cross-sectional view showing a first step of the process of fixing the sleeve to the mold.

FIG. 5 is a cross-sectional view showing a second stage of the step of fixing the sleeve to the mold.

FIG. 6 is a cross-sectional view showing a third stage of the step of fixing the sleeve to the mold.

[Explanation of symbols] 1 seat plate 11 Fitting hole 11a Expanded section 11b Reduced part 12 Tapered surface 13,14 Joining structure (dove joint) 2 mounting pieces 21 base 22 Engagement part 22a screw part 3 caps 31 tube 31a Female thread 31b screw part 32 brim 4 Sleeve for joint 41 hole 41a female thread 5 rebar 6 formwork 7 concrete

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] April 3, 2003 (2003.4.3)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Claims

[Correction method] Change

[Correction content]

[Claims]

Claims (6)

[Claims] 1. A jig for mounting a formwork for fixing a joint sleeve fixed to a tip end of a deformed bar to a predetermined position of a formwork, comprising a seat plate, a mounting piece and a cap. The plate is a long piece having a predetermined length, and a plurality of fitting holes are formed at predetermined intervals. The fitting piece can be fitted into the fitting hole, and the engaging portion of the fitting piece is The cap projects from the upper surface of the seat plate by a predetermined length, the cap is engageable with the engaging portion of the mounting piece, and is insertable into the hole at the lower end of the joint sleeve. Jig for mounting formwork of reinforcing bar joint. 2. The jig for mounting a frame for a reinforcing bar joint according to claim 1, wherein the seat plate is made of synthetic resin. 3. The jig for mounting a frame for a reinforcing bar joint according to claim 1, wherein both end portions of the seat plate along the longitudinal direction are tapered surfaces that spread downward. 4. The frame mounting jig for a reinforcing bar joint according to claim 1, wherein both end portions in the longitudinal direction of the seat plate have a joint structure for connecting a plurality of seat plates to each other in the longitudinal direction. Ingredient 5. The internal shape of the fitting hole according to claim 1, wherein the fitting hole has an expanded portion that is open on the bottom surface and a contracted portion that is open on the upper surface and communicates with the expanded portion. The mounting piece consists of a base part and an engaging part standing upright from this base part,
The fitting piece can be fitted in the fitting hole, and in this fitted state, the base portion of the fitting piece fits into the expanded portion of the fitting hole, and the engaging portion of the fitting piece fits into the fitting portion. The cap protrudes from the upper surface of the seat plate by a predetermined length through the contracted portion of the hole, the cap is engageable with the tip of the engaging portion of the mounting piece, and the lower end of the joint sleeve is provided. A jig for attaching a frame for a reinforcing bar joint, which can be fitted into a hole. 6. The cap according to claim 1, wherein the cap comprises a tubular portion and a collar portion, and the tubular portion is fitted into a hole portion at a lower end of the sleeve, and the collar portion is capable of abutting on a tip portion of the sleeve. A jig for mounting a formwork for a reinforcing bar joint, characterized by: