JP2018040232A - Method and device for silently driving anchor pin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and a device for silently driving an expansion plug using a push-in rod of a simple configuration, at an appropriate position.SOLUTION: In a method to drive an anchor pin, an anchor pipe 28 is inserted into a prepared hole 27 on a concrete building frame 25, an expansion plug 33 inserted inside is driven, and a tip slit 32 expands to anchor the anchor pipe 28 in the prepared hole 27. A male screw part 38 of a push-in rod 36 is screwed into a female screw part 35 inside the anchor pipe 28, and a flange part 29 at an opening edge of the anchor pipe 28 is adhered on an opening of the prepared hole 27 in a way that prevents co-rotation. The expansion plug 33 is pushed out silently by a tip rod 37 at a tip of the push-in rod 36 as the male screw part 38 penetrates while being screwed, thus expanding a tip part 31 and anchoring the anchor pipe in the prepared hole 27.SELECTED DRAWING: Figure 1

Description

  TECHNICAL FIELD The present invention relates to an anchor pin silent driving method and apparatus for fixing an outer wall material or the like to a concrete frame.

  Conventionally, a method shown in FIG. 4 (Patent Document 1) is known for this kind of anchor pin driving device.

  In the method shown in FIG. 4, a driving hole 13 reaching the concrete housing 10 from the mortar outer wall 11 is opened, a hooked anchor pin 12 is inserted into the shoulder surface, and the driving bar 15 is brought into contact with the internal expansion plug 17. In this method, the split groove 14 is expanded and pressed 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 with the hammer 16, noise and vibration are generated at a construction site requiring quietness such as a hospital or a school, and the anchor mounting method by hitting is not suitable. .
In order to solve this problem, a silent method is described in Patent Document 2 shown in FIG. In this method, the anchor pin 12 is inserted into the driving hole 13 of the concrete housing 10, 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 attached. 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, so that the expansion plug 17 is pushed in without being struck. In this method, the groove 14 is expanded and pressed into the driving hole 13.

Japanese Utility Model Publication No. 8-183 JP 2004-176303 A

The method shown in Patent Document 2 eliminates the hitting sound and can maintain quietness, but has the following problems.
(1) In order to push in the expansion plug 17 with the driving rod 15 interlocked with the pressing rod 22 of the pressurizing means 19, the pressurizing means 19 and the anchor pin 12 need to be integrated. Therefore, the anchor holder 18 is interposed between the pressurizing means 19 and the anchor pin 12 so as to be integrated. The anchor holder 18 wraps the cylindrical portion 23 formed with the male screw 20 to be screwed into the female screw 21 of the anchor pin 12, the flange portion 24 integrally connected to the pressing means 19, the pressing rod 22 and the driving rod 15. The anchor holder 18 having a complicated structure such as a hollow portion and a conduction hole portion through which the driving rod 15 passes is required.
(2) Not only are the driving rods 15 different in length depending on the length of the anchor pin 12, but the anchor holders 18 having different lengths for the portions that enclose the driving rod 15 and the pressing rod 22 are provided. 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 the proper position. I can't confirm.

  The present invention is intended to provide a method and an apparatus capable of driving the expansion plug silently with a push bar having a simple structure and capable of driving the expansion plug into an appropriate position. .

According to claim 1 of the present invention, the anchor pin is silently driven.
An anchor pipe 28 is inserted into the pilot hole 27 of the concrete casing 25, and an expansion plug 33 inserted into the anchor pipe 28 is driven in, and an uneven portion 31 provided at the tip of the anchor pipe 28 and a slip provided in the axial direction. In the silent driving method of the anchor pin that expands the split 32 and fixes the anchor pipe 28 in the pilot hole 27,
The male threaded portion 38 of the push-in rod 36 is screwed into the female threaded portion 35 provided in the vicinity of the proximal end portion inside the anchor pipe 28, and the flange portion 29 at the opening end of the anchor pipe 28 is set to the opening portion of the prepared hole 27. , In close contact with the co-rotation prevention state, by pushing out the expansion plug 33 with the tip rod 37 at the tip of the push-in rod 36 by the threaded intrusion of the male screw portion 38, the uneven portion 31 is expanded and the lower portion is expanded. The anchor pipe 28 is fixed to the hole 27.

The silent driving method of the anchor pin in claim 2 of the present invention,
A positioning ring 39 is screwed into a position of the male screw portion 38 exposed from the female screw portion 35 of the push rod 36 so that the position of the push rod 36 can be adjusted.

According to claim 3 of the present invention, a silent driving method for an anchor pin is as follows:
The clamping 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 advance and retreat.

A silent driving device for an anchor pin according to claim 4 of the present invention,
A hollow cylindrical tip inserted into the pilot hole 27 of the concrete housing 25 has an uneven portion 31 and a slit 32, and an internal thread portion 35 is formed inside the base end portion, and is provided outside the base end portion. An anchor pipe 28 having a flange 29 that closely contacts the opening of the pilot hole 27 and prevents co-rotation;
An expansion plug 33 that is inserted into the anchor pipe 28 and expands the uneven portion 31 outward;
It has a male screw portion 38 that is screwed into the female screw portion 35, and a push rod 36 having a tip rod 37 that pushes the expansion plug 33 to the tip of the male screw portion 38.

A silent driving device for an anchor pin according to claim 5 of the present invention,
4. The invention according to claim 4, wherein the push-in rod 36 includes a positioning ring 39 that is screwed to the male screw portion 38 so that the position can be adjusted, and a sandwiching portion 40 that is fixed to the rotating device 41 at the base end portion. To do.

A silent driving device for an anchor pin according to claim 6 of the present invention,
The invention according to claim 4 or 5 is characterized in that the flange portion 29 has a packing 30 for preventing co-rotation at a position in close contact with the opening portion of the pilot hole 27.

A silent driving device for an anchor pin 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 in close contact with the opening portion of the pilot hole 27 on the back surface of the flange portion 29.

A silent driving device for an anchor pin according to claim 8 of the present invention,
In the invention according to claim 4, 5, 6, or 7, the convex portion 43 that prevents crimping by crimping to the outer peripheral surface of the proximal end portion of the anchor pipe 28 to the inner peripheral surface of the opening portion of the pilot hole 27. It is characterized by having.

According to the first aspect of the present invention, the anchor pipe is inserted into the prepared hole of the concrete frame, the expansion plug inserted into the anchor pipe is driven, and the uneven portion provided at the tip of the anchor pipe and the axial direction are provided. In the method and apparatus for silently driving the anchor pin that expands the provided slit and fixes the anchor pipe in the pilot hole,
The male thread part of the push rod is screwed into the female thread part provided in the vicinity of the base end part on the inner side of the anchor pipe, and the flange part of the opening end of the anchor pipe is closely attached to the opening part of the pilot hole in a non-rotating state. By pushing out the expansion plug with the tip rod at the tip of the push-in rod by screwing in the male screw part, the uneven part is expanded and the anchor pipe is fixed to the pilot hole 7. It has the following effects.
(1) The anchor holding tool 18 is not required to integrate the pressurizing means 19 and the anchor pin 12 as described in Patent Document 2, and the collar portion at the opening end of the anchor pipe is used as the pilot hole. It is only necessary to be in close contact with the opening of the non-rotating state, and silent operation can be performed with a simple operation.
(2) It is only necessary to prepare a 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 that wraps the pressing rod.

  According to the second aspect of the present invention, since the positioning ring is screwed onto the push-in bar so that the position of the push-in bar is adjustable, the expansion plug is properly fitted. Can be inserted to the position.

  According to the invention described in claim 3, since the clamping portion of the proximal end portion of the push rod is fixed to the rotating device and the push rod is rotated to advance and retract, a tool such as an electric screwdriver is used. And can be easily silenced.

  According to invention of Claim 4, it has an uneven | corrugated | grooved part and a slot in the front-end | tip of a hollow cylinder inserted in the pilot hole of a concrete housing, forms an internal thread part inside a base end part, An anchor pipe having a collar portion that is provided on the outer side of the pilot hole and prevents co-rotation in close contact with the opening of the pilot hole, and an expansion plug that is inserted into the anchor pipe and expands the concavo-convex portion outward. And a pushing rod having a male threaded portion that is threadedly engaged with the female threaded portion and a distal end rod that pushes the expansion plug to the distal end of the male threaded portion. Therefore, a silent driving device with a simple configuration is provided. Can do.

  According to the invention of claim 5, the push rod has a positioning ring that is screwed to the male screw portion so that the position can be adjusted, and a pinching portion that is fixed to the rotating device at the base end portion. I can work. Moreover, a hand-held tool such as an electric screwdriver can be used.

  According to the sixth aspect of the present invention, since the flange has a packing for preventing co-rotation at a position in close contact with the opening of the pilot hole, silent driving can be performed while lightly pressing the anchor pipe.

  According to the seventh aspect of the present invention, since the convex portion that prevents co-rotation is provided at a position in close contact with the opening of the pilot hole on the back surface of the collar portion, it is possible to prevent co-rotation at the collar portion. it can.

  According to the invention described in claim 8, since the outer peripheral surface of the base end portion of the anchor pipe has a convex portion that presses against the inner peripheral surface of the opening of the pilot hole to prevent co-rotation, By simply press-fitting into the pilot hole, co-rotation is prevented and silence of the anchor pin can be achieved.

FIG. 3 is a cross-sectional view of the anchor pin silent driving method and apparatus according to the first embodiment of the present invention before the expansion plug 33 is driven. FIG. 3 is a cross-sectional view after driving the expansion plug 33 in FIG. 1. (A) is sectional drawing which shows the example different from FIG. 1 for the co-rotation prevention of the anchor pipe 28 in the silence driving method and apparatus of the anchor pin in this invention, (b) is the co-rotation prevention of the anchor pipe 28. It is sectional drawing seen from the bottom face which shows the further another example for. It is sectional drawing of the driving device of the anchor pin by the conventional hit | damage. It is sectional drawing of the conventional silent pinning method apparatus of an anchor pin.

According to 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 housing 25, and the expansion plug 33 inserted into the anchor pipe 28 is driven in, and provided at the tip of the anchor pipe 28. In driving the anchor pin for expanding the uneven portion 31 and the slit 32 provided in the axial direction and fixing the anchor pipe 28 in the pilot hole 27,
The male threaded portion 38 of the push-in rod 36 is screwed into the female threaded portion 35 provided in the vicinity of the proximal end portion inside the anchor pipe 28, and the flange portion 29 at the opening end of the anchor pipe 28 is set to the opening portion of the prepared hole 27. When the male threaded portion 38 is brought into close contact with the male threaded portion 38, the expansion plug 33 is silently pushed out by the distal end rod 37 at the distal end of the push-in rod 36, so that the concave-convex portion 31 is expanded and the lower portion is expanded. The anchor pipe 28 is fixed to the hole 27.

  In order to drive the expansion plug 33 to an appropriate position, a positioning ring 39 is screwed onto the push rod 36 at a position of the male screw portion 38 exposed from the female screw portion 35 of the push rod 36 so that the position can be adjusted.

  The rotation of the push-in rod 36 by screwing is performed by adhering the pinching portion 40 at the base end to a rotating device 41 such as a hand-held electric screwdriver and rotating the push-in rod 36 to advance and retreat.

  The anchor pin silent driving device of the present invention comprises an anchor pipe 28, an expansion plug 33, and a push-in rod 36, and the anchor pipe 28 has a hollow cylindrical shape inserted into the pilot hole 27 of the concrete housing 25. At the tip, there is a concavo-convex portion 31 and a slit 32, an internal thread portion 35 is formed inside the base end portion, and a flange portion 29 provided outside the base end portion and in close contact with the opening of the pilot hole 27 is provided. The expansion plug 33 is inserted into the anchor pipe 28 to expand the uneven portion 31 outward, and the push bar 36 is screwed into the female screw portion 35. It has a male screw portion 38 and a push rod 36 having a tip rod 37 that pushes the expansion plug 33 to the tip of the male screw portion 38.

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

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

  Instead of packing, a non-slip convex portion 43 can be provided at a position in close contact with the opening of the pilot hole 27 on the back surface of the flange portion 29. Further, the outer peripheral surface of the proximal 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 pilot hole 27.

Embodiment 1 of an anchor pin silent driving method and apparatus according to the present invention will be described with reference to the drawings.
In FIG. 1, it is assumed that an anchor pipe 28 is driven in order to attach a mortar wall material, tile, mesh material, or other outer wall material 26 to the wall surface of the concrete frame 25.
A pilot hole 27 is drilled from the outer wall material 26 side to a position reaching the concrete housing 25 with a drill. A concave groove 42 is formed in the wall surface of the outer wall member 26 in the opening of the lower hole 27, and the anchor pipe is formed so that the flange portion 29 at the base end is flush with the packing 30 interposed in the concave groove 42. 28 is inserted. The anchor pipe 28 is formed with a plurality of concavo-convex portions 31 projecting inward on the periphery in a direction orthogonal to the axial direction of the tip, and a plurality of slits 32 are formed from the tip to the middle. . 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 is in light contact with the inner surface of the uneven portion 31. ing. Further, a female thread portion 35 is formed on the inner surface of the anchor pipe 28 on the proximal end side.

The push-in rod 36 has a distal end rod 37 having a distal end smaller in diameter than 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 to the male threaded portion 38, and a proximal end portion And a sandwiching portion 40 such as a polygon fixed to the rotating device 41.
The female screw portion 35 and the male screw portion 38 are screwed together so that the pushing load can be sufficiently supported immediately before the expansion plug 33 is driven (state shown in FIG. 1), and after the expansion plug 33 is driven (see FIG. 2). The length is such that the positioning ring 39 does not come off the male screw portion 38 even in the state).

In such a configuration, as shown in FIG. 1, the anchor pipe 28 having the expansion plug 33 is inserted into the prepared hole 27. When the outer wall member 26 has the concave groove 42, the flange portion 29 is fitted through the packing 30, and when there is no concave groove 42, the outer wall member 26 is attached so as to be in contact with the surface of the outer wall member 26.
Next, the male screw portion 38 of the push rod 36 is screwed into the female screw portion 35 of the anchor pipe 28 and screwed in until the tip of the tip rod 37 comes into light contact with 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 where the expansion plug 33 is press-fitted to expand the slit 32 in the concavo-convex portion 31 so as to be closely fixed to the inner wall of the prepared hole 27. Adjust to

When the position of the positioning ring 39 is adjusted, the clamping portion 40 of the push rod 36 is fixed to the chuck of the rotation device 41, and the push rod 36 is rotated while pressing the rotation device 41 against the anchor pipe 28 side. This pressing is performed on the concave groove 42 or the surface of the outer wall member 26 in order to give a resistance to the extent that the anchor pipe 28 does not rotate together with the pressing rod 36 in a state where the female screw portion 35 and the male screw portion 38 are screwed together. The packing 30 and the flange 29 are brought into close contact with each other.
When the push rod 36 is rotated while applying resistance to the concave groove 42 or the surface contact portion of the outer wall material 26 to such an extent that the anchor pipe 28 does not rotate together with the push rod 36, the push rod 36 advances to expand the expansion plug. Extrude 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 closely fixed to the inner wall of the prepared hole 27.

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

In the above embodiment, the packing 30 is interposed between the flange 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 a concave portion 44 is formed on the outer wall material 26 on the surface of the concave groove 42 (the surface of the concrete housing 25 when there is no outer wall material 26). May be formed. Moreover, if the convex part 43 of the back surface of the collar part 29 bites into the concave groove 42 or the surface, the concave part 44 may be omitted.

  As shown in FIG. 3 (b), the convex portion 43 has a plurality of protrusions 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 rotates together with the pilot hole 27. You may make it press-fit so that it may not.

  DESCRIPTION OF SYMBOLS 10 ... Concrete frame, 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 ... cylindrical part, 24 ... collar part, 25 ... concrete housing, 26 ... outer wall material, 27 ... pilot hole, 28 ... anchor pipe, 29 ... collar part, DESCRIPTION OF SYMBOLS 30 ... Packing, 31 ... Uneven part, 32 ... Slot, 33 ... Expansion plug, 34 ... Tapered part, 35 ... Female thread part, 36 ... Push-in rod, 37 ... End rod, 38 ... Male thread part, 39 ... Positioning ring, 40 ... clamping part, 41 ... rotating device, 42 ... concave groove, 43 ... convex part, 44 ... concave part.

Claims (8)

Insert the anchor pipe into the pilot hole of the concrete frame, drive in the expansion plug inserted into the anchor pipe, and expand the uneven part provided at the tip of the anchor pipe and the slit provided in the axial direction. In the silent driving method of the anchor pin for fixing the anchor pipe in the pilot hole,
The male thread part of the push-in rod is screwed into the female thread part provided in the vicinity of the base end part on the inner side of the anchor pipe, and the flange part of the opening end of the anchor pipe is closely attached to the opening part of the pilot hole in a co-rotation preventing state. Then, by pushing out the expansion plug with the tip rod at the tip of the push-in rod by the threaded penetration of the male screw portion, the uneven portion is expanded and the anchor pipe is fixed to the pilot hole. A silent driving method of an anchor pin characterized by the above.   2. The silent insertion method for an anchor pin according to claim 1, wherein a positioning ring is screwed into a position of the male screw portion exposed from the female screw portion of the push rod so that the position of the push rod is adjustable.   3. A silent driving method for an anchor pin according to claim 1 or 2, wherein a clamping portion at a base end portion of the push rod is fixed to a rotating device and the push rod is rotated to advance and retreat. A hollow cylindrical tip that is inserted into the pilot hole of the concrete frame has an uneven portion and a slit, a female screw portion is formed on the inner side of the base end portion, and provided on the outer side of the base end portion. An anchor pipe having a collar portion that closely contacts the opening and prevents co-rotation;
An expansion plug that is inserted into the anchor pipe and expands the concave and convex portions outward;
A silent driving device for an anchor pin, comprising: a male screw part that is screwed into the female screw part; and a push rod having a tip rod that pushes the expansion plug at a tip of the male screw part.   The silent push-in device for an anchor pin according to claim 4, wherein the push rod has a positioning ring that is screwed to the male screw portion so that the position can be adjusted, and a clamping portion that is fixed to the rotating device at the base end portion.   The silence driving device for an anchor pin according to claim 4 or 5, further comprising a packing for preventing co-rotation at a position where the flange portion is in close contact with the opening of the pilot hole.   7. The anchor pin silent driving device according to 4, 5, or 6, wherein a convex portion for preventing co-rotation is provided at a position in close contact with the opening of the pilot hole on the back surface of the flange portion.   The anchor according to 4, 5, 6 or 7, wherein a convex portion is provided on the outer peripheral surface of the proximal end portion of the anchor pipe to prevent co-rotation by pressure bonding to the inner peripheral surface of the opening of the pilot hole. Pin silent drive device.

Images