JP2003027662A - Anchoring device for reinforcement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an anchoring device for reinforcement, which can have a relatively small injection hole formed in a plug body thereof, has a relatively large installation hole formed therein, facilitates production of an anchoring device body by casting or the like, facilitates installation of the plug body in the installation hole, facilitates confirmation of a screwed state between the reinforcement and the anchorage device body, facilitates anchoring control, is easy to handle, superior in ease of operation easy of manufacture, simple in structure, suitable for mass production, low in price, and economical. SOLUTION: The anchorage device consists of the anchoring device body A which is formed of an appropriate metal and can be screwed onto an end of the reinforcement 20, and the plug body B installed in a plug body installing portion 6 of the anchorage device body A. The anchorage device body A is comprised of a cylinder portion 1 and a flange portion 2. The cylinder portion 1 has a female screw hole 3 in an internal peripheral surface thereof, whereby the cylinder portion 1 is screwed onto the reinforcement 20. The flange portion 2 is arranged on a peripheral surface of the cylinder portion 1 at one end of the same. The cylinder portion 1 includes the plug body installing portion 6 and the installation hole 4 at the one end thereof, and the plug body B is installed in the cylinder portion 1 so as to block the installation hole 4. Further, a binding agent is injected into a gap between the anchorage device body A and the reinforcement 20 from the injection hole 12 as appropriate.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is mainly to be embedded in a concrete beam or a concrete column of a reinforced concrete structure and fixed to the end of the reinforcing bar in the concrete beam or the concrete column. The present invention relates to a fixing tool for a reinforcing bar of a reinforced concrete structure that is configured to increase the fixing strength of the reinforcing bar end in a concrete column, and in particular, a fixing method for a reinforcing bar devised so that its manufacturing and fixing work can be performed more easily. It is about ingredients.

[0002]

2. Description of the Related Art Conventionally, various kinds of fixing tools for reinforcing bars of this kind have been provided, for example, a cylindrical part having a female threaded part which is screwed to the end of a threaded reinforcing bar and formed on the inner periphery thereof. A closed portion that closes one end of the tubular portion, and a radial direction from the one end of the tubular portion,
A fixing hardware or the like having a flange portion extending outward and a plate-shaped base having a grout injection port formed in the closed portion is used (for example, Japanese Patent Laid-Open No. 10-159).
Fixing hardware as described in Japanese Patent No. 257).

[0003]

However, in the fixing hardware as described above, the fixing metal itself is made of casting or the like, but since the cloud injection port is considerably small with respect to the female screw portion, There was a drawback that manufacturing was relatively troublesome. Further, since the grout injection port is small, there is a problem that it is difficult to visually recognize the screwed state of the reinforcing bars in the fixing hardware.

[0004]

Therefore, the present invention solves the above-mentioned problems and the like, the fixing tool can be easily manufactured, the screwed state with the reinforcing bar can be easily confirmed, and the handling is easy. It was created in order to be able to provide a rebar fixing device with excellent usability. Therefore, in the fixing device for a reinforcing bar according to claim 1, the fixing device is embedded in a concrete beam or a concrete column of a reinforced concrete structure and fixed to an end portion of the reinforcing bar 20 in the concrete beam or the concrete column. A fixing tool for a reinforcing bar configured to enhance the fixing strength of the end of the reinforcing bar 20 in a concrete beam or a concrete column, which is made of an appropriate metal that can be screwed to the end of the reinforcing bar 20 with a spiral ridge 21. The fixing tool main body A is composed of a fixing member main body A and a plug body B mounted on the plug body attaching portion 6 provided on the fixing tool main body A. One end of the tubular portion 1 is provided with a substantially tubular tubular portion 1 formed so as to be screwed onto the reinforcing bar 20 with the ridge 21 and a flange portion 2 circumferentially provided on one end outer peripheral surface of the tubular portion 1. The plug mounting portion 6 is provided on the A mounting hole 4 is provided in the fixing member main body A, and the plug B is mounted so as to close the mounting hole 4 of the fixing device main body A. A means for arranging so that the connecting agent can be injected into the gap between the outer surface of the reinforcing bar 20 and the outer surface of the reinforcing bar 20 is adopted.

Further, in the fixing device for reinforcing bars according to the second aspect, the plug body B is provided around the base portion 10 which matches the mounting hole 4 and the outer periphery of one end portion and the other end portion of the base portion 10, respectively. In addition, a locking step portion 11 that can be locked to the hole edge portion of the mounting hole 4 and an injection hole 12 formed in the center of the base portion 10 are provided, and the entire plug body B is integrally made of an elastic material. The means for forming the same was adopted.

Further, in the rebar fixing device according to the third aspect of the invention, the plug B is provided around the base 10 that matches the mounting hole 4 and the outer periphery of one end of the base 10, and the mounting hole is provided. The locking step portion 11 that can be locked to the hole edge portion of the mounting hole 4, and the locking projection 13 that is protrudingly provided on the outer periphery of the other end portion of the base portion 10 and that can be locked to the hole edge portion of the mounting hole 4. And an injection hole 12 formed in the center of the base portion 10, and a means for cutting the cutout portion 5 through which the locking projection 13 can pass is provided in the hole edge portion of the mounting hole 4 of the fixing device main body A. did.

Further, in the rebar fixing device according to the fourth aspect, the plug mounting portion 6 is provided with the screw portion 7, and the screw portion 7 is provided.
The means for providing the plug body B with the screw portion 14 that is screwed into is adopted.

Then, in the rebar fixing device according to the fifth aspect, a means for setting the mounting hole 4 larger than the outer diameter of the rebar 20 is adopted.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below with reference to the drawings. INDUSTRIAL APPLICABILITY The present invention can be embedded in a concrete beam of a reinforced concrete building or a concrete column, and can be fixed to the end of the reinforcing bar 20 in the concrete beam or the concrete column. It is a fixing tool for a reinforcing bar of a reinforced concrete structure configured so that the fixing strength of the end portion of the reinforcing bar 20 in a concrete beam or a concrete column can be increased.

The fixing device for a reinforcing bar comprises a fixing device main body A made of a suitable metal which can be screwed to an end of the reinforcing bar 20 having a spiral projection 21 protruding from the outer surface thereof, and the fixing device main body. A
The plug B is formed so that it can be mounted in the mounting hole 4 of the plug mounting portion 6 provided in the above. The spiral projection 21 itself may be, for example, a single spiral, a plurality of spirals, a continuous spiral, or a discontinuous spiral.

Further, the fixing device main body A has a substantially cylindrical tubular portion 1 having a female screw hole 3 which is screwed into the spiral ridge 21 of the reinforcing bar 20 and which is formed on the inner peripheral surface, and the tubular portion 1 of the tubular portion 1. One end is continuously provided on the outer peripheral surface, and the outer peripheral portion is provided with a flange portion 2 having a larger diameter than the tubular portion 1 and having a substantially pressure-disc shape.
Moreover, the plug body mounting portion 6 is provided at one end of the tubular portion 1, and the mounting hole 4 is provided in the plug body mounting portion 6.

On the other hand, the plug B has a mounting hole 4 in the main body A of the fixing device.
A small-diameter injection hole 12 formed in the center of the fixing tool main body A to inject a coupling agent into a gap provided between the inner surface of the female screw hole 3 and the outer surface of the reinforcing bar 20. It is configured to be able to. In addition, the other end surface of the plug B is provided with a plurality of radial guides so that, for example, the coupling agent injected from the injection hole 12 can smoothly move to the gap between the inner surface of the female screw hole 3 and the outer surface of the reinforcing bar 20. A groove or the like may be cut (not shown).

The tubular portion 1 of the fixing device main body A has, for example, a relatively thick, generally short tubular shape, and its outer peripheral surface is formed in a substantially polygonal shape. That is, the fixing tool main body A is rebar 20
It is formed so that the tubular portion 1 can be reliably sandwiched by a spanner or the like when screwed to the. The outer peripheral portion of the flange portion 2 projects from the outer surface of the tubular portion 1,
It is formed so that the fixing stability of the fixing device main body A itself is improved.

Further, the female screw hole 3 of the tubular portion 1 is formed so as to correspond to the spiral ridge 21 of the reinforcing bar 20, and the spiral ridge 21 is formed.
It is formed so as to be securely screwed on. Moreover, the female screw hole 3 has a spiral projection 21 so that a slight gap is formed between the female screw hole 3 and the outer surface of the reinforcing bar 20 when the female screw hole 3 is screwed onto the reinforcing bar 20.
It becomes larger. That is, the connecting agent is formed so as to be smoothly filled between the inner surface of the female screw hole 3 and the outer surface of the reinforcing bar 20.

Then, the fixing tool main body A shown in FIGS.
The mounting hole 4 is formed in a substantially circular hole shape slightly smaller than the female screw hole 3 at the center of one end of the cylindrical portion 1, and the mounting hole 4 portion serves as the plug attachment portion 6.

The mounting hole 4 of the fixing device main body A shown in FIGS. 3 and 4 is formed in a substantially circular hole shape slightly smaller than the female screw hole 3 at the center of one end of the cylindrical portion 1, and For example, a substantially fan-shaped cutout portion 5 is formed in the peripheral portion thereof, and the mounting hole 4 portion serves as a plug attachment portion 6. Then, the cutout portion 5 is provided with a locking projection 1 of the plug body B which will be described later.
3 is configured to be passable.

Further, the mounting hole 4 of the fixing tool main body A shown in FIGS. 5 and 6 has a female screw hole at the center of one end portion of the tubular portion 1 formed so that one end thereof slightly protrudes from the flange portion 2. Three
It is formed in a substantially circular hole shape slightly larger than the diameter of the valley (outer diameter of the reinforcing bar 20), and the mounting hole 4 portion serves as the plug attachment portion 6.

In addition, the fixing tool body A shown in FIGS.
The mounting hole 4 is slightly larger than the diameter of the valley of the female screw hole 3 (outer diameter of the reinforcing bar 20) at the center of one end portion of the tubular portion 1 formed so that one end thereof slightly protrudes from the flange portion 2. The mounting hole 4 is formed in a substantially circular hole shape, and a screw portion 7 (for example, a female screw) is appropriately provided on the inner peripheral surface of the mounting hole 4 portion. The mounting hole 4 portion serves as the plug attachment portion 6. That is, the plug B is attached to the plug attachment portion 6 of the fixing tool main body A by an appropriate screw portion 14 (for example, a male screw) provided on the outer peripheral surface of the plug main body B described later and the screw portion 7 of the fixing tool main body A.
It is formed so that it can be attached to. The threaded portion 7 (male screw) may be provided on the outer peripheral surface of the mounting hole 4 and the threaded portion 14 (female screw) may be provided on the inner peripheral surface of the plug body B.

Further, a plug B as shown in FIGS. 1 and 2
Is, for example, integrally formed of a material that can be elastically deformed as appropriate, forms a base 10 having a substantially short cylindrical shape that matches the mounting hole 4, and one end and the other end of the base 10 are formed. A pair of locking step portions 11 are formed by circumferentially providing substantially annular projections on the outer circumference, respectively, and a relatively small substantially circular injection hole 12 is formed at the center of the base 10. . And
In this plug B, for example, a substantially annular projecting portion (and the base portion 10) provided on the other end portion of the base portion 10 is elastically deformed, and one end is pushed into the mounting hole 4 and passed through the mounting hole 4. At the same time, the base portion 10 is fitted to the mounting hole 4, and the projecting portion at the other end is elastically restored so that the locking step portion 11 and the locking step portion 11 of the projecting portion at the one end portion form the periphery of the mounting hole 4. The plug body B is configured to be securely mounted in the mounting hole 4 by sandwiching the portion. By the way, as the plug body B as shown in FIGS. 5 and 6, the same one as shown in FIGS. 1 and 2 is used.

Further, a plug B as shown in FIGS. 3 and 4
Is integrally formed of, for example, a suitable metal material, a suitable synthetic resin material, a suitable composite material, or the like, and forms a substantially short cylindrical base portion 10 that matches the mounting hole 4. A locking stepped portion 11 is formed by providing a substantially annular protrusion around the outer periphery of one end of the base 10, and the outer periphery of the other end of the base 10 is substantially aligned with the cutout portion 5 of the fixing tool main body A. A substantially fan-plate shaped locking projection 13 that passes through is provided in a protruding manner, and a relatively small substantially circular injection hole 12 is formed in the center of the base portion 10. Then, the plug B has a base portion 10 so that the locking projection 13 is aligned with the cutout portion 5 provided at the hole edge portion of the mounting hole 4.
Is inserted into the mounting hole 4 from one end, and when the locking projection 13 passes through the notch 5, the plug B is rotated to lock the locking projection 13 in the peripheral portion of the mounting hole 4, The stopper body 11 is configured to be reliably mounted in the mounting hole 4 by sandwiching the peripheral portion of the mounting hole 4 by the locking stepped portion 11 and the locking projection 13 of the projecting portion.

Then, a plug B as shown in FIG. 7 and FIG.
Is integrally formed of, for example, a suitable metal material, a suitable synthetic resin material, a suitable composite material, or the like, and is formed into a substantially lateral short-bottomed cylindrical shape that matches the mounting hole 4 and has an outer periphery. A threaded portion 14 is provided on the surface, and a relatively small substantially circular injection hole 12 is formed in the center of the bottom plate portion. Moreover, the plug B is constructed such that the open end of the plug B can accommodate the end of the reinforcing bar 20. That is, the fixing tool main body A can be fixed to the reinforcing bar 20 in a state where one end of the fixing tool main body A slightly projects from the end of the reinforcing bar 20.

The specific construction, shape, size and material of the fixing tool for the reinforcing bar, the specific construction, shape, size and material of the fixing tool body A, the specific construction, shape, size, material and flange of the tubular portion 1 Specific configuration, shape and dimensions of the part 2, specific configuration, shape and dimensions of the female screw hole 3, specific configuration, shape and dimensions of the mounting hole 4,
Arrangement position, concrete configuration, shape, size, number, arrangement position of notch 5, concrete constitution, shape, size of plug attachment portion 6, concrete constitution, shape, size, arrangement of screw portion 7. Position, specific configuration of plug B, shape, size, material, specific configuration of base 10,
Shape, size, material, specific configuration, shape of the locking step portion 11,
Dimension, Specific Configuration, Shape, Dimension, Number, Arrangement Position of Injection Hole 12, Specific Configuration, Shape, Dimension, Number, Arrangement Position of Locking Protrusion 13, Specific Configuration, Shape, Dimension of Screw Part 14 , Arrangement position, specific configuration, shape, dimensions of the reinforcing bar 20, spiral projection 21
The specific configuration, shape, dimensions, etc. of the above are not limited to the examples shown in the drawings, and can be freely set and changed.

The reinforcing bar fixing device of the present invention is constructed as described above, and an example of its use will be described below. First, the fixing device main body A is arranged at a desired position in the beam form or the column form, and is screwed to the end portion of the reinforcing bar 20 which is arranged at the desired position in advance. At this time, whether or not the tip of the reinforcing bar 20 is at a predetermined position of the mounting hole 4 of the fixing tool main body A is visually confirmed from the mounting hole 4. Next, the plug B is mounted in the mounting hole 4, and then a connecting agent is appropriately injected from the injection hole 12 of the plug B to connect to the gap between the female screw hole 3 of the fixing tool main body A and the reinforcing bar 20. The agent is filled, and the reinforcing bar 20 and the fixing tool main body A are connected and fixed.

[0024]

Therefore, the fixing device for reinforcing bars according to claim 1 is embedded in a concrete beam or a concrete column of a reinforced concrete structure and fixed to an end portion of the reinforcing bar 20 in the concrete beam or the concrete column. A fixing tool for a reinforcing bar configured to increase the fixing strength of the reinforcing bar 20 end in a concrete beam or a concrete column, which is made of an appropriate metal that can be screwed to the end of the reinforcing bar 20 with a spiral ridge 21. Of the fixing tool main body A and a plug B attached to the plug mounting portion 6 provided on the fixing tool main body A. The fixing tool main body A has a female screw hole 3 on its inner peripheral surface. Spiral ridge 21
A cylindrical portion 1 having a substantially cylindrical shape formed so as to be screwed to the attached reinforcing bar 20 and a flange portion 2 provided around an outer peripheral surface of one end of the cylindrical portion 1 are provided, and one end of the cylindrical portion 1 has a plug. A body mounting portion 6 is provided, and a mounting hole 4 is provided in the plug mounting portion 6, and the plug B is mounted so as to close the mounting hole 4 of the fixing tool main body A, and an injection hole formed in the center thereof is provided. Since the coupling agent can be appropriately injected into the gap between the inner surface of the female screw hole 3 of the fixing device main body A and the outer surface of the reinforcing bar 20 from the hole 12, the injection hole 12 formed in a relatively small size is formed in the plug body B. Provided, plug attachment part 6
Since the mounting hole 4 can be set to be relatively large, it becomes easy to manufacture the fixing device main body A molded by casting or the like.
As a result, the fixing tool main body A and the stopper B can be easily manufactured. Moreover, the structure is simple, suitable for mass production, and an economical reinforcing bar fixing device that can be provided at low cost. In addition, according to the fixing tool for reinforcing bars, the plug body B can be easily mounted in the mounting hole 4 of the fixing tool body A. For example, after the fixing tool body A is screwed to the reinforcing bar 20, the plug body B is removed. Since it can be easily attached to the fixing tool main body A, the state of screwing the reinforcing bar 20 and the fixing tool main body A (the screwing position of the reinforcing bar 20 in the female screw hole 3 of the fixing tool main body A) can be easily performed. It becomes possible to confirm (visually check), the construction management is easy, the handling is easy, and the usability is excellent.

Further, in the fixing tool for the reinforcing bar according to the second aspect, the plug B is provided around the base 10 that matches the mounting hole 4, and the outer circumferences of one end and the other end of the base 10, respectively. The stopper body 11 is provided with a locking step portion 11 that can be locked at the hole edge portion of the mounting hole 4, and an injection hole 12 formed in the center of the base portion 10.
Since the whole body is integrally formed of an elastic material as appropriate, the elastic deformation of the plug body B can be used to easily mount the plug body B in the mounting hole 4 of the fixing tool main body A, and the plug body B is once mounted. With the locking step portions 11 provided around the outer circumferences of the one end and the other end of the base portion 10, the hole edge portion of the mounting hole 4 is sandwiched between the one end and the other end. Is the mounting hole 4
Will not easily deviate from. Moreover, the structure of the plug body B itself is simplified, the manufacture is easy, it is suitable for mass production, and it can be provided at low cost.

Further, in the rebar fixing device according to the third aspect, the plug body B is provided around the base portion 10 matching the mounting hole 4 and the outer periphery of one end portion of the base portion 10, and the hole of the mounting hole 4 is provided. A locking step portion 11 that can be locked to the edge portion, a locking protrusion 13 that is provided so as to project on the outer periphery of the other end portion of the base portion 10 and that can be locked to the hole edge portion of the mounting hole 4, and a base portion. 10 is provided at the center of the fixing tool main body A, and the notch 5 through which the locking projection 13 can pass is cut at the hole edge portion of the mounting hole 4 of the fixing tool main body A. Insert the base portion 10 of the plug body B into the mounting hole 4 so as to pass through the notch 5 provided at the hole edge portion of the mounting hole 4, and further rotate the plug body B to mount the locking projection 13. By fixing to the hole edge portion of the hole 4, the fixing device main body A
The plug body B can be easily mounted in the mounting hole 4 of the mounting hole 4 and once mounted, the locking step portion 11 and the locking projection 13 at one end of the base portion 10 allow the hole edge portion of the mounting hole 4 to be mounted. One end is sandwiched between the one end and the other end, and the plug B is attached to the mounting hole 4
Will not easily deviate from. Moreover, the structure of the plug body B itself is simplified, the manufacture is easy, it is suitable for mass production, and it can be provided at low cost.

The fixing device for reinforcing bars according to claim 4 is
Since the threaded portion 7 is provided on the plug body mounting portion 6 and the threaded portion 14 screwed to the threaded portion 7 is provided on the plug body B, the plug body B can be mounted on the plug body mounting portion 6 of the fixing tool main body A. It can be easily carried out by the screw portions 7 and 14, and the stopper B is attached to the stopper attachment portion 6.
Will not easily deviate from. Moreover, the structure of the plug B itself becomes simpler, easier to manufacture, suitable for mass production, and more inexpensive to provide.

In the rebar fixing device according to the fifth aspect, since the mounting hole 4 is set to be larger than the outer diameter of the reinforcing bar 20, the reinforcing bar 20 can be inserted through the mounting hole 4, and the end portion of the reinforcing bar 20 is fixed to the fixing device. The fixing tool main body A can be fixed to the reinforcing bar 20 in a state where one end of the main body A slightly protrudes from the bottom, and the screwed state between the reinforcing bar 20 and the fixing tool main body A can be easily confirmed (visually confirmed), and construction management can be performed. It is an easy-to-use, easy-to-use, and easy-to-use fixing device for reinforcing bars. In particular, before the fixing tool main body A is screwed to the reinforcing bar 20 and fixed with the connecting agent, the fixing tool main body A can be moved along the reinforcing bar 20 and other reinforcing bars are arranged. When making a streak, the fixing device main body A can be easily moved so as not to get in the way.

[Brief description of drawings]

FIG. 1 is an exploded perspective view illustrating a fixing tool for reinforcing bars of the present invention.

FIG. 2 is a partially cutaway plan view illustrating a fixing tool for reinforcing bars of the present invention.

FIG. 3 is an exploded perspective view illustrating another fixing device for reinforcing bars of the present invention.

FIG. 4 is a partially cutaway front view illustrating another fixing device for reinforcing bars of the present invention.

FIG. 5 is an exploded perspective view illustrating another fixing device for reinforcing bars of the present invention.

FIG. 6 is a partially cutaway front view illustrating another fixing device for reinforcing bars of the present invention.

FIG. 7 is an exploded perspective view illustrating another fixing device for reinforcing bars of the present invention.

FIG. 8 is a partially cutaway front view illustrating another fixing device for reinforcing bars of the present invention.

[Explanation of symbols]

A Fixing tool body 1 Cylindrical part 2 Flange part 3 Female screw hole 4 Mounting hole 5 Notch part 6 Plug body mounting part 7 Screw part B Plug body 10 Base part 11 Locking step part 12 Injection hole 13 Locking protrusion 14 Screw part 20 Reinforcing bar 21 spiral ridge

Claims (5)

[Claims] 1. An embedding in a concrete beam or a concrete column of a reinforced concrete structure and fixing to the end of the reinforcing bar in the concrete beam or the concrete column,
A fixing tool for a reinforcing bar configured so as to enhance the fixing strength of the reinforcing bar end portion in a concrete beam or a concrete column, the fixing member body being made of an appropriate metal capable of being screwed to the end portion of the reinforcing bar with a spiral ridge. , And a plug body attached to a plug body mounting portion provided on the fixing tool body. The fixing tool body has a female screw hole on its inner peripheral surface, and can be screwed to a rebar with a spiral ridge. And a flange portion that is provided around the outer peripheral surface of one end of the tubular portion, and a plug attachment portion is provided at one end of the tubular portion. Is provided with a mounting hole, and the plug is mounted so as to close the mounting hole of the fixing tool main body, and the injection hole formed in the center of the plug body is provided between the inner surface of the female screw hole of the fixing tool body and the outer surface of the reinforcing bar. A fixing device for reinforcing bars, characterized in that a connecting agent can be appropriately injected into the gap. 2. A stopper body is provided around a base portion that matches the mounting hole, an outer periphery of one end portion and the other end portion of the base portion, and a locking member that can be locked to a hole edge portion of the mounting hole, respectively. 2. The fixing device for a reinforcing bar according to claim 1, further comprising a step portion and an injection hole formed in the center of the base portion, wherein the entire plug body is integrally formed of an elastic material. 3. The plug body includes a base portion that matches the mounting hole, a locking step portion that is provided around the outer circumference of one end portion of the base portion, and that can be locked at the hole edge portion of the mounting hole, and a base portion. The fixing projection is provided on the outer periphery of the other end, and is provided with a locking projection that can be locked at the hole edge portion of the mounting hole, and an injection hole formed in the center of the base portion. 2. The fixing tool for a reinforcing bar according to claim 1, wherein a cutout portion through which the locking projection can pass is cut in a hole edge portion. 4. The fixing device for a reinforcing bar according to claim 1, wherein a threaded portion is provided on the plug mounting portion, and a threaded portion that is screwed into the threaded portion is provided on the plug body. 5. The fixing device for a reinforcing bar according to claim 1, 2, 3 or 4, wherein the mounting hole is set to be larger than the outer diameter of the reinforcing bar.