JP2004238847A - Anchor pin for pinning method of construction, and pinning method of construction using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To press a finishing member in a sufficient strength in the execution, and to provide an anchor pin for not impairing design property of a finishing member and a pinning construction method using the same. <P>SOLUTION: A concrete frame body 2 is drilled down to a specified depth through the finishing member 3 and an adhesive resin 4 is injected in an insertion hole 5. The anchor pin 7 for the pinning method attached to press the finishing member 3 is provided with a body 11 inserted in a filling hole 5 and a head 12 pressing the finishing member 3 provided at one end of the body 11. The head 12 has a thin wall and formed in a diameter larger than the opening 5a of the filling hole 5. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an anchor pin for a pinning method used for repairing (pinning) an outer wall surface of a building where “floating” has occurred, and a pinning method using the same.
[0002]
[Prior art]
Conventionally, this type of pinning method is to penetrate a finishing material such as a tile and drill a hole into a concrete body to a predetermined depth, inject an adhesive resin into the hole, and insert an anchor pin into the hole. Insert. The anchor pin is formed in a rod shape, and after deeply inserted into the insertion hole, the opening of the insertion hole is closed with a putty or the like, and the opening is finished flush with the finishing material (for example, see Patent Reference 1).
An anchor pin of this type is also known to have a head. In this case, a counterbore hole is formed in the opening of the insertion hole, and the head is attached to the counterbore. It is pushed into a hole, and this part is closed with a putty or the like, or closed with a resin cap or the like, so that this part is finished flush with a finishing material (for example, see Patent Document 2).
[0003]
[Patent Document 1]
JP-A-4-64669 (page 3, FIG. 1 and FIG. 3)
[Patent Document 2]
JP-A-2001-200641 (page 5-6, FIG. 5)
[0004]
[Problems to be solved by the invention]
In the former conventional pinning method, since the anchor pin is formed in a rod shape, when the finishing material is a thin material such as a tile, there is a problem that the holding strength is insufficient. In addition, since the opening of the insertion hole is closed with a putty or the like, there is a problem that irregularities are likely to occur, and the repaired portion is conspicuous.
Also, in the latter pinning method, since a counterbore is formed at the time of drilling, for example, when the finishing material is a tile or the like, the counterbore becomes thinner, and even if the anchor pin itself has strength, However, there has been a problem that the strength of the receiving portion on the tile side is reduced. In addition, there is a problem in that the number of work steps such as filling of putty and mounting of a resin cap increases as finishing.
[0005]
An object of the present invention is to provide an anchor pin for a pinning method, which can hold a finishing material with sufficient strength and does not impair the design of the finishing material, and a pinning method using the same.
[0006]
[Means for Solving the Problems]
An anchor pin for a pinning method according to the present invention is a pinning method that is installed to penetrate a finishing material to a predetermined depth and to insert a bonding resin into an insertion hole to hold the finishing material. An anchor pin for use with a body inserted into the insertion hole, and a head provided at one end of the body for holding the finishing material, wherein the head is thin and the opening of the insertion hole is provided. It is characterized by being formed with a diameter larger than the diameter.
[0007]
According to this configuration, since the head of the anchor pin is formed to have a diameter larger than the diameter of the opening of the insertion hole, when the anchor pin is inserted into the insertion hole into which the resin is injected, the head of the anchor pin is inserted. Close the opening of the filling hole. For this reason, there is no ring-shaped gap between the head of the anchor pin and the opening of the insertion hole when viewed from the front, and since the head is formed thin, it is exposed at the insertion hole. The head of the anchor pin does not stand out. That is, since the opening is closed by the head, it is not necessary to finish the opening with a putty or the like. In this case, since it is not necessary to form a counterbore in the insertion hole, it is not necessary to increase the diameter of the head, and the holding strength can be maintained even if the head is formed thin. In addition, it is possible to prevent a decrease in the strength of the finished material due to the counterbore.
[0008]
In this case, it is preferable that the head is formed of a reinforcing central portion formed in a dish shape and connected to the trunk portion and having substantially the same diameter as the opening diameter of the insertion hole, and a pressing peripheral portion surrounding the reinforcing central portion. .
[0009]
According to this configuration, since the reinforcing central portion of the head is formed in a dish shape, the holding strength can be sufficiently maintained even if the head is formed thin. Further, since the reinforcing central portion is formed to have substantially the same diameter as the diameter of the opening of the insertion hole, this portion is inserted into the opening of the inserting hole, and the pressing peripheral edge surrounding the reinforcing central portion is formed of a finishing material. It does not rise from the surface.
[0010]
In these cases, it is preferable that the surface periphery of the head be chamfered.
[0011]
Further, in this case, it is preferable that the peripheral edge of the surface is chamfered in a rounded cross section.
[0012]
According to this configuration, the head of the anchor pin provided so as to close the insertion hole hardly causes a shadow on the surface of the finishing material, and makes the head less noticeable.
[0013]
In these cases, it is preferred that the head be colored to match the color of the finish.
[0014]
According to this configuration, the head of the anchor pin exposed on the surface of the finishing material can be made more inconspicuous.
[0015]
The pinning method of the present invention is a pinning method of repairing an outer wall using the above-described anchoring pin for a pinning method, wherein a counterbore hole of a predetermined depth penetrates the finishing material through a required repair portion of the outer wall. Punching step of forming an insertion hole without holes, resin injection step of injecting an adhesive resin into the insertion hole, and after the resin injection step, an anchor pin is inserted into the insertion hole, and the head has an opening edge of the insertion hole. And a pin inserting step of inserting the pin into contact with the portion.
[0016]
According to this configuration, the pinning operation can be completed in three steps of the drilling step, the resin injecting step, and the pin inserting step, so that the conventional counterbore hole drilling and capping to the opening of the insertion hole can be performed. Work can be omitted. Further, it is possible to prevent a decrease in the strength of the finished material due to the counterbore hole as in the related art. Moreover, the head of the anchor pin after construction can be made inconspicuous.
[0017]
Another anchoring pin for the pinning method of the present invention is mounted to penetrate the finishing material and pierce the concrete skeleton to a predetermined depth and press the finishing material into the insertion hole in which the adhesive resin is injected. An anchor pin for a pinning method, comprising: a body to be inserted into an insertion hole; and a head provided at one end of the body to hold a finishing material, wherein the head is formed in a dish shape, and is inserted. The diameter of the hole is slightly larger than the diameter of the opening.
[0018]
According to this configuration, the head of the anchor pin is formed to have a diameter slightly larger than the diameter of the opening of the insertion hole, so that the head of the anchor pin is inserted so as to close the opening of the insertion hole. Is done. Therefore, there is no ring-shaped gap in front view between the head of the anchor pin and the opening of the insertion hole, and the head is only slightly protruded from the surface of the finishing material, so that it is inconspicuous. It becomes. That is, since the opening is closed by the head, it is not necessary to finish the opening with a putty or the like. In addition, since the head is formed in a dish shape, the finishing material can be pressed with sufficient strength through the opening edge. In addition, a counterbore is not required, and a decrease in the strength of the finished material due to the counterbore can be prevented. The "dish-shaped" head means the shape of the so-called flat head screw or flat head (however, a tool groove is not required).
[0019]
Furthermore, in order to make the head less noticeable, it is preferable to color the head so as to match the color of the finishing material.
[0020]
Another pinning method according to the present invention is a pinning method for repairing an outer wall using the above-described anchor pin for the pinning method, wherein an insertion hole having a predetermined depth is formed by penetrating a finishing material into a required repair portion of the outer wall. A hole forming step, a chamfering step of chamfering the opening edge of the insertion hole according to the shape of the head of the anchor pin, a resin injection step of injecting an adhesive resin into the insertion hole, and a resin injection. After the step, a pin insertion step of inserting the anchor pin into the insertion hole such that the head thereof and the finishing material are substantially flush with each other is provided.
[0021]
According to this configuration, the pinning operation can be completed in four steps of the drilling step, the chamfering step, the resin injecting step, and the pin inserting step. Operations such as capping can be omitted. Further, it is possible to prevent a decrease in the strength of the finished material due to the counterbore as in the related art. In addition, since the head of the anchor pin can be substantially flush with the finishing material by the process of chamfering the opening edge of the insertion hole, the head can be made less noticeable, and There is no loss of design.
[0022]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an anchor pin for a pinning method according to an embodiment of the present invention and a pinning method using the same will be described with reference to the accompanying drawings. In this pinning method, an adhesive resin is injected into the insertion hole drilled at the required repair location such as the “floating part” on the outer wall, and then the anchor pin is inserted, and the outer wall is repaired with the resin and the anchor pin. Is what you do. That is, as shown by the imaginary line in FIG. 1, the outer wall 1 is obtained by attaching a finishing material 3 such as a tile or a stone material to the surface of a concrete skeleton 2 via a mortar (not shown), and In order to repair a gap (“floating”) 4 formed between the mortar 2 and the finishing material 3, an insertion hole 5 is formed, a resin 6 is injected into the insertion hole 5, and an anchor pin 7 is formed. (See FIGS. 5 and 6).
[0023]
FIG. 1 is a side view of the anchor pin according to the embodiment. As shown in the figure, the anchor pin 7 is made of stainless steel or the like, and has a body 11 inserted into the insertion hole 5 and a head for holding the finishing material 3 formed at one end of the body 11. With the part 12, it is formed integrally. The body 11 is formed to have a diameter slightly smaller than the diameter of the insertion hole 7, and a male screw 14 is engraved on the outer peripheral surface thereof to increase the pull-out strength. The body 11 may be formed with a number of annular grooves or irregularities instead of the male screw 14.
[0024]
As shown in FIGS. 1 and 2, the head 12 is thin and has a diameter slightly larger than the diameter of the opening 5 a of the insertion hole 5. In this case, the head 12 closes (caps) the opening 5a of the insertion hole 5, and is formed so as to be inconspicuous at this time. The head 12 is colored by baking paint 15 or the like so as to match the color of the surface of the finishing material 3.
[0025]
Further, the head portion 12 is connected to the body portion 11 and formed in a dish shape and has a reinforcing central portion 12a having a diameter substantially equal to the diameter of the opening 5a of the insertion hole 5, a pressing peripheral portion 12b surrounding the reinforcing central portion 12a, and The reinforcing central portion 12a is inserted into the opening 5a of the insertion hole 5, and the pressing peripheral edge 12b is brought into close contact with the opening edge 5b of the insertion hole 5. That is, the strength of the thin head 12 is maintained by the reinforcing central portion 5a. The reinforcing central portion 12a may have a round shape as shown in FIG. 2B, or may have a stepped shape as shown in FIG. 2C. Further, the surface peripheral portion 12c of the head portion 12 is chamfered so as to form an inclined surface, so that the portion of the head portion 12 exposed on the surface of the finishing material 3 is made as inconspicuous as possible.
[0026]
However, as shown in FIG. 3, the surface peripheral portion 12c of the head 12 may be chamfered in a rounded cross section. In this case, since no shadow is formed on the head 12 exposed on the surface of the finishing material 3, the head 12 can be made more inconspicuous. As a further modified example, the head 12 in FIG. 4 has an arc-shaped cross section as a whole. In this case, the thickness of the head portion 12 is less noticeable and no shadow is formed, so that the head portion 12 can be made even less noticeable. As described above, the head portion 12 of the anchor pin 7 protrudes from the surface of the finishing material 3 by the thickness thereof and is not flush with the finishing material 3, but is made inconspicuous because it is formed thin.
[0027]
When the nominal diameter of the anchor pin 7 (the diameter of the body 11) is 3 mm, the diameter of the head 12 is preferably 5 mm, and the diameter of the insertion hole 5 is preferably 4 mm. When the nominal diameter (diameter of the trunk portion 11) is 5 mm, it is preferable that the diameter of the head 12 is 8 mm and the diameter of the insertion hole 5 is 6 mm. The thickness of the head 12 is preferably about 0.3 mm to 0.5 mm. Further, depending on the thickness of the head 12, the reinforcing central portion 12a may not be formed in a dish shape.
[0028]
Here, the procedure of the pinning method for repairing the outer wall 1 using the anchor pin 7 will be described with reference to FIGS. As described above, the outer wall 1 is obtained by attaching a finishing material 3 such as a tile or a stone material to the surface of a concrete skeleton 2 via a mortar (not shown). This shows a state in which a gap (“floating”) 4 has occurred with time between the finishing material 2 and the finishing material 3.
[0029]
In this pinning method, first, an insertion hole 5 is drilled to a predetermined depth in the concrete skeleton 2 through the finishing material 3 by a drilling tool 21 such as a diamond core drill (a drilling step: FIG. 5A). The insertion hole 5 has a diameter slightly larger than the anchor pin 7 so that the anchor pin 7 can be loosely fitted. Further, no counterbore hole is formed by the pinning method of the embodiment. After piercing the insertion hole 5, the chips attached to the insertion hole 5 are suctioned and cleaned with a blower or the like.
[0030]
Next, using a pump-type resin injector 22, the injection nozzle 23 is inserted into the insertion hole 5 to inject the adhesive-based resin (epoxy resin or the like) 6 (resin injection step: FIG. )). The resin 6 is injected while pumping the resin injector 22. When the resin 6 is sufficiently injected into the gap 4 between the concrete frame 2 and the finishing material 3, the pumping becomes extremely heavy, and the injection of the resin 6 is completed. This is felt (resin injection step: FIG. 5C).
[0031]
In the injection nozzle 23 of the embodiment, the injection needle 25 is slidably provided with respect to the nozzle main body 24, and the taper portion 26 is made of fluorine rubber or the like which is in close contact with the opening 5a of the insertion hole 5. For this reason, the injection needle 25 is extended by the first pumping operation, and after reaching the deep bottom of the insertion hole 5, the discharge of the resin 6 is started, and the resin 6 can be injected from the deepest part of the insertion hole 5. Will be possible. Also, at the time of pumping, the tapered portion 26 is in close contact with the opening 5a of the insertion hole 5, so that resin dripping from the opening 5a is prevented, and the resin 6 is placed in the gap 4 between the concrete frame 2 and the finishing material 3. It will be possible to spread.
[0032]
Next, after pulling out the injection nozzle 23 from the insertion hole 5, the anchor pin 7 is inserted therein (pin insertion step: FIG. 6 (d)). At this time, the anchor pin 7 is pushed in until the head 12 of the anchor pin 7 contacts the opening edge 5b of the insertion hole 5 (pin insertion step: FIG. 6 (e)). Thereafter, curing is performed until the resin 6 is cured. Since the air is not sealed in the insertion hole 5, even if the injection nozzle 23 is pulled out from the insertion hole 5, the resin 6 does not leak out (the inside of the insertion hole 5 becomes a negative pressure). Also, since the insertion volume of the anchor pin 7 is somewhat smaller than the insertion volume of the injection nozzle 23 into the insertion hole 5, the resin R does not overflow due to the insertion of the anchor pin 7.
[0033]
FIG. 7 shows a repair completed state when the finishing material 3 is a tile. As shown in the figure, each tile (finished material 3) stuck on the potato joint is pressed by the anchor pin 7 at the center thereof, and the peeling and falling thereof is prevented. As described above, the head 12 of the anchor pin 7 is exposed on the surface of each tile (finishing material 3). However, since the head 12 is formed to be thin and colored in the same color as the tile, it is extremely It is inconspicuous. Also, in this case, since the counterbore hole is not formed in the tile itself, the strength of the tile (around the insertion hole 5) is not impaired, and the tile (finishing material 3) is firmly attached to the concrete frame 2. (Anchor).
[0034]
Next, an anchor pin for a pinning method according to a second embodiment of the present invention and a pinning method using the same will be described. However, in the following description, the description will focus on the parts that are different from the first embodiment. As shown in FIG. 8, the anchor pin 7A of the second embodiment is made of stainless steel or the like, and is integrally formed with a body 31 and a head 32 for holding the finishing material 3. A male screw 34 is engraved on the outer peripheral surface of the body 31 to increase the pull-out strength.
[0035]
On the other hand, the head 32 is formed in a dish shape, and is formed to have a diameter slightly larger than the diameter of the opening 5a of the insertion hole 5, as in the first embodiment. That is, the head 32 has the same form as that of a head such as a countersunk screw (however, there is no groove for a tool) so that it can have sufficient strength. Further, the head 32 is colored by baking paint 35 or the like so as to match the color of the surface of the finishing material 3 as in the first embodiment.
[0036]
Here, with reference to FIG. 9 and FIG. 10, the procedure of the pinning method using the above-described anchor pin 7A will be described. As in the first embodiment, first, an insertion hole 5 is drilled to a predetermined depth in the concrete skeleton 2 through the finishing material 3 by a drilling tool 21 such as a diamond core drill (a drilling process: FIG. 9A). . Next, the opening edge 5b of the insertion hole 5 is chamfered into a dished shape corresponding to the shape of the head 32 of the anchor pin 7A (chamfering step: FIG. 9B). After chamfering, the chips attached to the insertion hole 5 are suctioned and cleaned with a blower or the like.
[0037]
Here, an adhesive resin (epoxy resin or the like) 6 is injected into the insertion hole 5 (resin injection step: FIGS. 9C and 10D), and then an anchor pin is inserted into the insertion hole 5. 7A is inserted (pin insertion step: FIG. 10E). At this time, until the head 32 of the anchor pin 7A comes into contact with the opening edge 5b of the insertion hole 5, that is, the surface of the head 32 of the anchor pin 7A is flush with the surface of the finishing material 3. The pin 7A is pushed in (pin insertion step: FIG. 10 (f)). Thereafter, curing is performed until the resin 6 is cured.
[0038]
Thus, according to the second embodiment, the head 32 of the anchor pin 7A is flush with the surface of the finishing material 3, and the head 32 of the anchor pin 7A is colored according to the finishing material 3. Therefore, after construction, the anchor pin 7A is extremely inconspicuous, and the design of the finishing material 3 is not impaired. Further, since it is not necessary to form a counterbore, there is no problem such as a decrease in the strength of the finishing material 3.
[0039]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to the pinning method for the pinning method of this invention, and a pinning method using the same, there is no gap between the head of the anchor pin and the opening of the insertion hole, and the head is formed thin. As a result, the head of the anchor pin does not stand out and does not impair the design of the finished material. Further, since the counterbore is not formed in the insertion hole, and it is not necessary to form the counterbore, the finished material can be held down with sufficient strength. Moreover, the work method of the pinning work can be simplified, and the construction time can be shortened.
[0040]
According to another pinning method for a pinning method and a pinning method using the same according to the present invention, the head of the anchor pin does not stand out and does not impair the design of the finished material. Further, since the counterbore is not formed in the insertion hole, and it is not necessary to form the counterbore, the finished material can be held down with sufficient strength. Moreover, the work method of the pinning work can be simplified, and the construction time can be shortened.
[Brief description of the drawings]
FIG. 1 is a side view of an anchor pin for a pinning method according to an embodiment of the present invention.
FIG. 2 is an enlarged side view around the head of the anchor pin according to the embodiment.
FIG. 3 is an enlarged side view around the head of an anchor pin according to a first modified example.
FIG. 4 is an enlarged side view around the head of an anchor pin according to a second modification.
FIGS. 5A and 5B are views showing a construction step of the pinning method, in which FIG. 5A is a view of a drilling step, FIG. 5B is an initial view of a resin injection step, and FIG.
6A and 6B are an initial view of a pin insertion step showing a construction step of the pinning method, and FIG. 6E is a later view of the pin insertion step.
FIG. 7 is a front view of the outer wall showing a completed state of the pinning method.
FIG. 8 is a side view of an anchor pin for a pinning method according to a second embodiment of the present invention.
9A is a diagram illustrating a drilling process, FIG. 9B is a diagram illustrating a chamfering process, and FIG. 9C is an initial diagram illustrating a resin injecting process, illustrating a construction process of the pinning method according to the second embodiment.
FIGS. 10A and 10B are a late view of a resin injection step, an initial view of a pin insertion step, and a late view of a pin insertion step, respectively, showing an execution step of a pinning method according to a second embodiment.
[Explanation of symbols]
Reference Signs List 1 outer wall 2 concrete body 3 finishing material 4 gap 5 insertion hole 5a opening 5b opening edge 6 resin 7 anchor pin 11 torso 12 head 12a reinforcing central portion 12b pressing peripheral edge 12c surface peripheral edge 15 baking coating

Claims (9)

An anchor pin for a pinning method, which is mounted to press the finishing material into an insertion hole into which a concrete skeleton is pierced to a predetermined depth by penetrating the finishing material and an adhesive resin is injected,
A torso inserted into the insertion hole, a head provided at one end of the torso and holding the finishing material,
An anchor pin for a pinning method, wherein the head is thin and has a diameter larger than an opening diameter of the insertion hole. The head is connected to the body and is formed in a dish shape, and includes a reinforcing central portion having substantially the same diameter as an opening diameter of the insertion hole, and a pressing peripheral portion surrounding the reinforcing central portion. An anchor pin for a pinning method according to claim 1. The anchor pin for a pinning method according to claim 1, wherein a peripheral edge of a surface of the head is chamfered. The anchor pin for a pinning method according to claim 3, wherein the peripheral edge of the surface is chamfered in a rounded shape. The anchor pin according to any one of claims 1 to 4, wherein the head is colored so as to match a color of the finishing material. A pinning method for repairing the outer wall using the pin for the pinning method according to any one of claims 1 to 5,
A perforation step of forming an insertion hole having a predetermined depth and having no counterbore hole by penetrating the finishing material at a required repair point on the outer wall;
A resin injection step of injecting an adhesive resin into the insertion hole,
A pin insertion step of inserting the anchor pin into the insertion hole after the resin injection step so that the head comes into contact with an opening edge of the insertion hole. Construction method. An anchor pin for a pinning method, which is mounted to press the finishing material into an insertion hole into which a concrete skeleton is pierced to a predetermined depth by penetrating the finishing material and an adhesive resin is injected,
A torso inserted into the insertion hole, a head provided at one end of the torso and holding the finishing material,
An anchor pin for a pinning method, wherein the head is formed in a dish shape and has a diameter somewhat larger than an opening diameter of the insertion hole. The anchor pin according to claim 7, wherein the head is colored so as to match a color of the finishing material. A pinning method for repairing the outer wall using the pinning method anchor pin according to claim 7 or 8,
A perforation step of forming an insertion hole having a predetermined depth by penetrating the finishing material at a repair location of the outer wall,
A chamfering step of chamfering the opening edge of the insertion hole according to the shape of the head of the anchor pin,
A resin injection step of injecting an adhesive resin into the insertion hole,
After the resin injection step, a pin insertion step of inserting the anchor pin into the insertion hole such that the head and the finishing material are substantially flush with each other. .

Images