JP6868752B2 - Silent driving method and equipment for anchor pins - Google Patents

Description

The present invention relates to a silent driving method and an apparatus for anchor pins for fixing an outer wall material or the like to a concrete skeleton.

The method shown in FIG. 4 (Patent Document 1) has been conventionally known for this type of anchor pin driving device.

In the method shown in FIG. 4, a driving hole 13 reaching the concrete skeleton 10 is opened from the mortar outer wall 11, an anchor pin 12 with a flange is inserted into the shoulder surface, and the driving rod 15 is brought into contact with the internal expansion plug 17. This is a method of expanding the split groove 14 and crimping it into the driving hole 13 by driving with a hammer 16.

In the method shown in FIG. 4, since the expansion plug 17 is driven by the hammer 16, noise and vibration are generated at construction sites where quietness is required such as hospitals and schools, and the anchor mounting method by impact is not suitable. ..
In order to solve this problem, Patent Document 2 shown in FIG. 5 describes a silent method. In this method, the anchor pin 12 is inserted into the driving hole 13 of the concrete skeleton 10, and the male screw 20 at the tip of the anchor holder 18 is screwed into the female screw 21 inside the anchor pin 12, and the anchor holder 18 is inserted. It is connected to the pressurizing means 19, and the driving rod 15 is slowly pushed out by the pressing rod 22 of the pressurizing means 19 to push in the expansion plug 17 without hitting it, and the expansion plug 17 splits the tip of the anchor pin 12. This is a method of expanding the groove 14 and crimping it into the driving hole 13.

Jikkenhei 8-183 Gazette Japanese Unexamined Patent Publication No. 2004-176303

The method shown in Patent Document 2 eliminates the striking sound and can maintain quietness, but has the following problems.
(1) In order to push the expansion plug 17 with the driving rod 15 interlocked with the pressing rod 22 of the pressurizing means 19, it is necessary to integrate the pressurizing means 19 and the anchor pin 12. Therefore, the anchor holder 18 is interposed and integrated between the pressurizing means 19 and the anchor pin 12. The anchor holder 18 encloses a tubular portion 23 having a male screw 20 screwed into the female screw 21 of the anchor pin 12, a flange portion 24 integrally connected to the pressurizing means 19, a pressing rod 22, and a driving rod 15. An anchor holder 18 having a complicated structure such as a cavity portion and a conduction hole portion through which the driving rod 15 penetrates is required.
(2) Not only is it necessary to have different lengths of the driving rod 15 according to the length of the anchor pin 12, but also anchor holders 18 having different lengths of the portions that wrap the driving rod 15 and the pressing rod 22 are used. It is necessary to prepare a plurality of types of tools having different sizes as the anchor holder 18.
(3) Since the portion where the driving rod 15 and the pressing rod 22 are in contact with each other is surrounded by the anchor holder 18, the insertion distance of the driving rod 15 is unknown, and the expansion plug 17 has been inserted to an appropriate position. I can't confirm.

The present invention is to provide a method and a device thereof capable of driving the expansion plug silently with a push rod having a simple structure and driving the expansion plug at an appropriate position. ..

The silent driving method of the anchor pin according to claim 1 of the present invention is
An anchor pipe 28 is inserted into a pilot hole 27 of a concrete skeleton 25, an expansion plug 33 inserted into the anchor pipe 28 is driven into the hole 27, and a scraping portion 31 provided at the tip of the anchor pipe 28 and provided in the axial direction. In the silent driving method of the anchor pin in which the split 32 is expanded and the anchor pipe 28 is fixed in the prepared hole 27.
The male threaded portion 38 of the push rod 36 is screwed into the female threaded portion 35 provided near the base end portion inside the anchor pipe 28, and the flange portion 29 at the open end of the anchor pipe 28 is inserted into the opening of the prepared hole 27. By pushing the expansion plug 33 with the tip rod 37 at the tip of the push rod 36 by screwing the male screw portion 38 into close contact with the co-rotation prevention state, the uneven portion 31 is expanded and the lower portion 31 is expanded. The anchor pipe 28 is fixed to the hole 27.

The silent driving method of the anchor pin according to claim 2 of the present invention is
A positioning ring 39 is screwed onto the push rod 36 at a position of a male screw portion 38 exposed from the female screw portion 35 of the push rod 36 so as to be adjustable in position.

The silent driving method of the anchor pin according to claim 3 of the present invention is
The pinching portion 40 at the base end of the push rod 36 is fixed to a rotating device 41 which is a hand-held tool such as an electric screwdriver, and the push rod 36 is rotated to move forward and backward.

The silent driving device for anchor pins according to claim 4 of the present invention
A hollow cylindrical tip to be inserted into a pilot hole 27 of a concrete skeleton 25 has an uneven portion 31 and a ground portion 32, a female screw portion 35 is formed inside the base end portion, and is provided outside the base end portion. An anchor pipe 28 having a flange portion 29 that is in close contact with the opening of the prepared hole 27 to prevent co-rotation.
An expansion plug 33 that is inserted inside the anchor pipe 28 and expands the uneven portion 31 outward.
It is characterized by having a male threaded portion 38 screwed into the female threaded portion 35, and a push rod 36 having a tip rod 37 for pushing out the expansion plug 33 at the tip of the male threaded portion 38.

The silent driving device for anchor pins according to claim 5 of the present invention
The invention according to claim 4 is characterized in that the push rod 36 has a positioning ring 39 that is screwed into a male screw portion 38 so as to be adjustable in position, and a sandwiching portion 40 that is fixed to a rotating device 41 at a base end portion. To do.

The silent driving device for anchor pins according to claim 6 of the present invention
The invention according to claim 4 or 5, characterized in that the flange portion 29 has a packing 30 that is positioned in close contact with the opening of the prepared hole 27 to prevent co-rotation.

The silent driving device for anchor pins according to claim 7 of the present invention
The invention according to claim 4, 5 or 6 is characterized in that a convex portion 43 for preventing co-rotation is provided at a position close to the opening of the prepared hole 27 on the back surface of the flange portion 29.

The silent driving device for anchor pins according to claim 8 of the present invention
In the invention according to claim 4, 5, 6 or 7, a convex portion 43 is formed by crimping the outer peripheral surface of the base end portion of the anchor pipe 28 to the inner peripheral surface of the opening of the prepared hole 27 to prevent co-rotation. It is characterized by having.

According to the invention of claim 1,
The process of making a pilot hole in the concrete skeleton by penetrating the exterior material attached to the outer wall surface of the concrete skeleton.
In the anchor pipe to be inserted into the prepared hole, a plurality of uneven portions are formed around the direction orthogonal to the axial direction of the tip of the hollow cylinder, and a plurality of grinds are formed from the tip to the middle, so that the hollow is formed. A female threaded portion is formed inside the cylindrical base end portion, and a flange portion projecting to the outside of the base end portion is provided, and this collar portion is co-located with the concave groove of the exterior material in the opening of the prepared hole. The process of inserting this anchor pipe into the prepared hole in close contact to prevent rotation, and
The process of inserting the expansion plug inside the anchor pipe and
A step of said screwed the externally threaded portion of the rod pushing the female screw portion provided in the vicinity of the proximal end of the inner anchor pipe, it abuts the distal end of the tip rod of said push rod to said expansion plug,
A step of screwing a positioning ring into a portion of the male screw portion exposed from the female screw portion of the push rod to adjust the push position of the tip rod of the push rod.
A step of fixing the sandwiching portion of the base end portion of the push rod to the rotating device in order to rotate the push rod and move it forward and backward.
The convex portion on the back surface of the flange portion is fitted and pressed into the concave portion of the concave groove of the exterior material by screwing intrusion of the male screw portion by the rotating device to prevent co-rotation, and the tip rod at the tip of the push rod. The step of extruding the expansion plug, expanding the uneven portion, and fixing the anchor pipe to the prepared hole.
From the step of advancing the push rod until the positioning ring comes into contact with the flange portion, and when the driving of the anchor pipe into the pilot hole is completed, the rotating device is rotated in the reverse direction to remove the push rod from the anchor pipe. Since the method of silently driving the anchor pin is characterized by the above, it has the following effects.
(1) An anchor holder 18 is not required to integrate the pressurizing means 19 and the anchor pin 12 as described in Patent Document 2, and the flange portion at the open end of the anchor pipe is formed into the prepared hole. All you have to do is to stick to the opening of the pipe in a non-rotating state, and you can drive silently with a simple operation.
(2) It is sufficient to prepare only the driving rod according to the length of the anchor pin, and it is not necessary to prepare anchor holders having different lengths of the portion wrapping the pressing rod.
(3) Since the step of adjusting the position of the tip rod of the push rod by screwing the positioning ring into the position of the male screw portion exposed from the female screw portion of the push rod, the expansion plug is inserted to an appropriate position. can do.
(4) Since the step of fixing the sandwiching portion at the base end of the push rod to the rotating device in order to rotate the push rod and move it forward and backward, it is easy to use a tool such as an electric screwdriver to make silence. You can type in.
(5) Since a convex portion for preventing co-rotation is provided at a position close to the opening of the pilot hole on the back surface of the brim, the collar can prevent co-rotation.
(6) A convex portion is formed on the back surface of the flange portion, a concave portion is formed in the concave groove of the exterior material, and the convex portion and the concave portion are fitted and pressure-welded to prevent co-rotation and the tip of the push rod. Since the expansion plug is pushed out by the tip rod of the above, it is possible to further ensure the prevention of co-rotation at the collar.

According to the invention of claim 2,
A hollow cylindrical anchor pipe that penetrates an exterior material attached to the outer wall surface of a concrete skeleton and is inserted into a pilot hole formed in the concrete skeleton. A plurality of uneven portions are formed around the orthogonal direction, and a plurality of grinds are formed from the tip to the middle, and a female screw portion is formed inside the base end portion of the hollow cylinder, and the base end portion is formed. An anchor pipe that is provided so as to project to the outside of the prepared hole and has a flange portion that is in close contact with the concave groove of the exterior material at the opening of the prepared hole to prevent co-rotation.
An expansion plug that is inserted inside the anchor pipe and expands the uneven portion to the outside,
A push rod having a male screw portion to be screwed into the female screw portion and having a tip rod for pushing out the expansion plug at the tip of the male screw portion.
It consists of a rotating device that is connected to the sandwiching portion of the base end portion of the push rod and pushes the push rod while rotating.
The push rod has a positioning ring that is adjustablely screwed into the male thread portion exposed from the female thread portion side.
A convex portion is formed on the back surface of the flange portion, a concave portion is formed in the concave groove of the exterior material, and the convex portion and the concave portion are fitted and pressed to prevent co-rotation while preventing the tip rod at the tip of the push rod. Since the anchor pin silent driving device is characterized in that the expansion plug is pushed out in the above, it has the following effects.
(1) It is possible to provide a silent driving device having a simple configuration. Since the push rod has a positioning ring that is screwed into the male screw portion so as to be adjustable in position and a sandwiching portion that is fixed to the rotating device at the base end portion, the work at the driving position can be performed accurately. In addition, a hand-held tool such as an electric screwdriver can be used.
(2) A convex portion is formed on the back surface of the flange portion, a concave portion is formed in the concave groove of the exterior material, and the convex portion and the concave portion are fitted and pressure-welded to prevent co-rotation and the tip of the push rod. Since the expansion plug is pushed out by the tip rod of the above, it is possible to further ensure the prevention of co-rotation at the collar.

It shows Example 1 of the silent driving method and apparatus of the anchor pin by this invention, and is the sectional view before driving of the expansion plug 33. It is sectional drawing after driving of the expansion plug 33 in FIG. (A) is a cross-sectional view showing an example different from FIG. 1 for preventing co-rotation of the anchor pipe 28 in the silent driving method and device of the anchor pin in the present invention, and (b) is the co-rotation prevention of the anchor pipe 28. It is a cross-sectional view seen from the bottom which shows still another example for. It is sectional drawing of the anchor pin driving device by a conventional striking. It is sectional drawing of the conventional silent driving method apparatus of an anchor pin.

In the silent driving method of the anchor pin of the present invention, the anchor pipe 28 is inserted into the pilot hole 27 of the concrete skeleton 25, the expansion plug 33 inserted into the anchor pipe 28 is driven, and the anchor pipe 28 is provided at the tip of the anchor pipe 28. In driving an anchor pin for fixing the anchor pipe 28 in the prepared hole 27 by expanding the uneven portion 31 and the slit 32 provided in the axial direction.
The male screw portion 38 of the push rod 36 is screwed into the female screw portion 35 provided near the base end portion inside the anchor pipe 28, and the flange portion 29 at the opening end of the anchor pipe 28 is inserted into the opening of the pilot hole 27. The concave-convex portion 31 is expanded and the lower portion 31 is expanded by silently pushing out the expansion plug 33 with the tip rod 37 at the tip of the push rod 36 by the screw intrusion of the male screw portion 38 in close contact with the detent state. The anchor pipe 28 is fixed to the hole 27.

In order to drive the expansion plug 33 to an appropriate position, the positioning ring 39 is screwed into the push rod 36 so as to be adjustable in position at the position of the male screw portion 38 exposed from the female screw portion 35 of the push rod 36.

In the rotation of the push rod 36 by screwing, the sandwiching portion 40 at the base end is fixed to a rotating device 41 such as an electric screwdriver on hand, and the push rod 36 is rotated to move forward and backward.

The silent driving device for the anchor pin of the present invention includes an anchor pipe 28, an expansion plug 33, and a push rod 36, and the anchor pipe 28 is a hollow cylindrical shape inserted into a pilot hole 27 of a concrete skeleton 25. A flange portion 29 having a concavo-convex portion 31 and a ground portion 32 at the tip, forming a female screw portion 35 inside the base end portion, and being provided on the outside of the base end portion and in close contact with the opening of the prepared hole 27. The expansion plug 33 is inserted into the anchor pipe 28 to expand the uneven portion 31 to the outside, and the push rod 36 is screwed into the female screw portion 35. It is composed of a push rod 36 having a male screw portion 38 and a tip rod 37 for pushing out the expansion plug 33 at the tip of the male screw portion 38.

The push rod 36 has a positioning ring 39 that is screwed into the male screw portion 38 so as to be adjustable in position, and a sandwiching portion 40 that is fixed to the rotating device 41 at the base end portion.

The packing 30 is interposed at a position where the flange portion 29 is in close contact with the opening of the pilot hole 27.

Instead of the packing, a non-slip convex portion 43 may be provided at a position close to the opening of the prepared hole 27 on the back surface of the flange portion 29. Further, the outer peripheral surface of the base end portion of the anchor pipe 28 may have a convex portion 43 that is crimped to the inner peripheral surface of the opening of the prepared hole 27.

The silent driving method of the anchor pin and the first embodiment of the apparatus according to the present invention will be described with reference to the drawings.
In FIG. 1, it is assumed that the anchor pipe 28 is driven into the wall surface of the concrete skeleton 25 in order to attach the mortar wall surface material, the tile, the mesh material, and the other outer wall material 26.
A pilot hole 27 is drilled from the outer wall material 26 side to a position reaching the concrete skeleton 25. A concave groove 42 is formed on the wall surface of the outer wall material 26 at the opening of the prepared hole 27, and an anchor pipe is provided so that the flange portion 29 at the base end is flush with the concave groove 42 with the packing 30 interposed therebetween. 28 is inserted. In the anchor pipe 28, a plurality of uneven portions 31 are formed so as to project toward the inner peripheral side around a direction orthogonal to the axial direction of the tip, and a plurality of grinds 32 are formed from the tip to the middle. .. Further, an expansion plug 33 having a diameter slightly smaller than the inner diameter of the anchor pipe 28 is inserted into the anchor pipe 28, and the tapered portion 34 at the tip of the expansion plug 33 lightly contacts the inner surface of the uneven portion 31. ing. Further, a female threaded portion 35 is formed on the inner surface of the anchor pipe 28 on the base end side.

The push rod 36 includes a tip rod 37 whose tip has a diameter smaller than that of the anchor pipe 28, a male threaded portion 38 screwed into the female threaded portion 35, a positioning ring 39 whose position can be adjusted on the male threaded portion 38, and a base end portion. It is composed of a sandwiching portion 40 such as a polygon fixed to the rotating device 41 of the above.
The female screw portion 35 and the male screw portion 38 are screwed so as to sufficiently support the pushing load immediately before the expansion plug 33 is driven (the state shown in FIG. 1), and after the expansion plug 33 is driven (FIG. 2). The length is set so that the positioning ring 39 does not come off from the male threaded portion 38 even in the state).

In such a configuration, as shown in FIG. 1, an anchor pipe 28 having an expansion plug 33 is inserted into the prepared hole 27. When the outer wall material 26 has a concave groove 42, the flange portion 29 is fitted via the packing 30, and when there is no concave groove 42, the outer wall material 26 is attached so as to be in contact with the surface of the outer wall material 26.
Next, the male threaded portion 38 portion of the push rod 36 is screwed into the female threaded portion 35 of the anchor pipe 28, and is screwed in until the tip of the tip rod 37 lightly abuts on the end face of the expansion plug 33. In this state, the distance d1 from the positioning ring 39 to the flange portion 29 coincides with the position d2 in which the expansion plug 33 is press-fitted to expand the slit 32 in the uneven portion 31 and firmly fix it to the inner wall of the prepared hole 27. Adjust to do.

After adjusting the position of the positioning ring 39, the sandwiching portion 40 of the push rod 36 is fixed to the chuck of the rotating device 41, and the pushing rod 36 is rotated while pressing the rotating device 41 against the anchor pipe 28 side. This pressing is performed on the concave groove 42 or the surface of the outer wall material 26 in order to provide resistance so that the anchor pipe 28 does not rotate together with the pushing rod 36 while the female threaded portion 35 and the male threaded portion 38 are screwed together. The packing 30 and the flange portion 29 are brought into close contact with each other.
When the push rod 36 is rotated while giving resistance to the concave groove 42 of the outer wall material 26 or the contact portion on the surface to the extent that the anchor pipe 28 does not rotate together with the push rod 36, the push rod 36 advances and the expansion plug is expanded. Push out 33. When the positioning ring 39 is pushed in until it comes into contact with the flange portion 29, the expansion plug 33 reaches the appropriate position of the uneven portion 31, and the slit 32 in the uneven portion 31 is expanded and firmly fixed to the inner wall of the prepared hole 27.

When the driving of the expansion plug 33 is completed, the rotating device 41 is rotated in the reverse direction to remove only the pushing rod 36 from the outer wall material 26. At this time, since the anchor pipe 28 is fixed to the prepared hole 27, the push rod 36 can be easily rotated in the reverse direction and removed.

In the above embodiment, the packing 30 is interposed between the flange portion 29 and the concave groove 42 in order to prevent the push rod 36 and the anchor pipe 28 from rotating together, but the present invention is not limited to this.
As shown in FIG. 3A, a convex portion 43 is formed on the back surface of the flange portion 29, and the concave portion 44 is formed in the outer wall material 26 (the surface of the concrete skeleton 25 when there is no outer wall material 26) on the surface of the concave groove 42. May be formed. Further, if the convex portion 43 on the back surface of the flange portion 29 has a good bite to the concave groove 42 or the front surface, the concave portion 44 may be omitted.

As shown in FIG. 3B, the convex portion 43 is formed into a plurality of ridges extending in the axial direction from the back surface of the flange portion 29 to the outer peripheral surface of the anchor pipe 28, and is co-rotated with the prepared hole 27. It may be press-fitted so as not to.

10 ... concrete skeleton, 11 ... mortar outer wall, 12 ... anchor pin, 13 ... driving hole, 14 ... split groove, 15 ... driving rod, 16 ... hammer, 17 ... expansion plug, 18 ... anchor holder, 19 ... pressurization Means, 20 ... male screw, 21 ... female screw, 22 ... pressing rod, 23 ... cylinder part, 24 ... collar part, 25 ... concrete skeleton, 26 ... outer wall material, 27 ... pilot hole, 28 ... anchor pipe, 29 ... collar part, 30 ... Packing, 31 ... Concavo-convex part, 32 ... Grinding, 33 ... Expansion plug, 34 ... Tapered part, 35 ... Female thread part, 36 ... Push rod, 37 ... Tip rod, 38 ... Male thread part, 39 ... Positioning ring, 40 ... sandwiching portion, 41 ... rotating device, 42 ... concave groove, 43 ... convex portion, 44 ... concave portion.

Claims (2)

The process of making a pilot hole in the concrete skeleton by penetrating the exterior material attached to the outer wall surface of the concrete skeleton.
In the anchor pipe to be inserted into the prepared hole, a plurality of uneven portions are formed around the direction orthogonal to the axial direction of the tip of the hollow cylinder, and a plurality of grinds are formed from the tip to the middle, so that the hollow is formed. A female threaded portion is formed inside the cylindrical base end portion, and a flange portion projecting to the outside of the base end portion is provided, and this collar portion is co-located with the concave groove of the exterior material in the opening of the prepared hole. The process of inserting this anchor pipe into the prepared hole in close contact to prevent rotation, and
The process of inserting the expansion plug inside the anchor pipe and
A step of screwing a male screw portion of a push rod into a female screw portion provided near the base end portion inside the anchor pipe and abutting the tip rod at the tip of the push rod with the expansion plug.
A step of screwing a positioning ring into a portion of the male screw portion exposed from the female screw portion of the push rod to adjust the push position of the tip rod of the push rod.
A step of fixing the sandwiching portion of the base end portion of the push rod to the rotating device in order to rotate the push rod and move it forward and backward.
The convex portion on the back surface of the flange portion is fitted and pressed into the concave portion of the concave groove of the exterior material by screwing intrusion of the male screw portion by the rotating device to prevent co-rotation, and the tip rod at the tip of the push rod. The step of extruding the expansion plug, expanding the uneven portion, and fixing the anchor pipe to the prepared hole.
From the step of advancing the push rod until the positioning ring comes into contact with the flange portion, and when the driving of the anchor pipe into the pilot hole is completed, the rotating device is rotated in the reverse direction to remove the push rod from the anchor pipe. Anchor pin silent driving method characterized by becoming. A hollow cylindrical anchor pipe that penetrates an exterior material attached to the outer wall surface of a concrete skeleton and is inserted into a pilot hole formed in the concrete skeleton. A plurality of uneven portions are formed around the orthogonal direction, and a plurality of grinds are formed from the tip to the middle, and a female screw portion is formed inside the base end portion of the hollow cylinder, and the base end portion is formed. An anchor pipe that is provided so as to project to the outside of the prepared hole and has a flange portion that is in close contact with the concave groove of the exterior material at the opening of the prepared hole to prevent co-rotation.
An expansion plug that is inserted inside the anchor pipe and expands the uneven portion to the outside,
A push rod having a male screw portion to be screwed into the female screw portion and having a tip rod for pushing out the expansion plug at the tip of the male screw portion.
It consists of a rotating device that is connected to the sandwiching portion of the base end portion of the push rod and pushes the push rod while rotating.
The push rod has a positioning ring that is adjustablely screwed into the male thread portion exposed from the female thread portion side.
A convex portion is formed on the back surface of the flange portion, a concave portion is formed in the concave groove of the exterior material, and the convex portion and the concave portion are fitted and pressed to prevent co-rotation while preventing the tip rod at the tip of the push rod. An anchor pin silent driving device characterized in that the expansion plug is pushed out in the above.

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