JP2007154471A - Bracket mounting method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bracket mounting method for correcting inclination without causing breakage or the like of a skeleton wall even when the mounting direction of an anchor part inclines. <P>SOLUTION: The anchor part has an anchor pin 14 having an external thread part 11 mounted to a bracket body 1 at one end and a diameter enlarged head 12 at the other end, and an anchor ring 16 having a slit 15 axially slit from the diameter enlarged head side edge and mounted to the anchor pin 14 in an axially slidable manner. The anchor part is mounted into a borehole 18 formed in the skeleton wall 17, and the external thread part 11 of the anchor pin is screwed with an internal thread part 5 of the bracket body 1 to drive the whole into the borehole 18 until a collar part 8 abuts on the outer surface of the skeleton wall 17. Further, the bracket body 1 is tightened to draw the anchor pin 14 toward the bracket body 1 side to thereby correct the mounting direction of the anchor pin 14. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a bracket building bracket such as a rim mounting bracket used when mounting a rim on a building wall of a concrete building such as reinforced concrete (RC), precast concrete (PC), lightweight cellular concrete (ALC), or the like. It relates to the mounting method.

  Conventionally, as a bracket, a hook-shaped bracket body provided with a hook-shaped member provided at one end, a male screw portion provided at the outer periphery of the other end, and a female screw portion provided through the central portion in the axial direction And an anchor portion screwed and connected to the flange-shaped member side of the female screw portion of the bracket body, and a heat insulating material pressing plate and a trunk edge receiving plate that are sequentially screwed to the male screw portion. A bracket is known (see, for example, Patent Document 1).

  As a process of attaching such a bracket to the building wall of the building, the anchor portion is first driven into and fixed to the housing wall, and then the bracket body is attached and fixed to the anchor portion. FIG. 5 shows a specific process example. 6 is a schematic cross-sectional view in the axial direction of the bracket, in which 17 is a housing wall, 18 is a drilling hole, 23 is an adhesive, 50 is an anchor portion, 51 is a through hole, 52 is a driving pin, and 54 is an anchor. Pins, 55 are slits, 56 is an enlarged portion, 58 is a male screw portion, 61 is a bracket body, and 68 is a collar portion.

  FIG. 6A shows an anchor portion 50 before being driven into the housing wall 17, and an anchor pin 54 having a male screw portion 58 for attachment to the bracket body 61 and an enlarged portion 56 in which a slit 55 is cut from the end edge. And a driving pin 52 fitted into a through hole 51 formed inside the anchor pin 54 and having a ball 53 attached to one end thereof. Further, the through hole 51 has an inner diameter smaller than the diameter of the ball 53 toward the edge of the enlarged portion.

  As shown in FIG. 6 (b), when the hole 18 is formed in the housing wall 17, the anchor pin 54 of (a) is driven into the hole 18, and the driving pin 52 is further driven, FIG. As shown in b), the ball 53 attached to the tip of the driving pin 52 expands the through hole 51 in the vicinity of the edge of the enlarged portion 55 where the inner diameter in the enlarged portion 55 is reduced. The outer diameter expands and bites into the housing wall 17, and the anchor pin 54 is fixed to the housing wall 17.

  A female screw (not shown) is cut at one end of the bracket main body 1 in order to screw the male screw portion 58 of the anchor pin 54 until the flange portion 68 attached to the bracket main body 61 comes into contact with the housing wall 17. By screwing the male screw portion 58 of the anchor pin 54 into the female screw [FIG. 5C], the anchor portion 50 is attached to the bracket main body 61 and the bracket main body 61 is fixed to the housing wall 17.

JP 2004-251031 A

  As shown in FIG. 6, the conventional bracket is fixed to the housing wall 17 before the anchor portion 50 is attached to the bracket body 61. Therefore, when the excavation direction of the hole 18 formed in the housing wall 17 or the driving direction of the anchor portion 50 is inclined (inclined from the direction perpendicular to the surface of the housing wall 17), the bracket body 61 The bracket body 61 is also tilted when the is attached to the anchor portion 50, and there is a problem that the surface of the base for fixing the trunk edge is not constant when the trunk edge is attached.

  Further, if a force is applied to adjust the angle of the anchor part 50 once fixed, the frame wall 17 may be broken by the anchor part 50 and the strength may be reduced.

  An object of the present invention is to solve the above-described problem and provide a bracket mounting method capable of correcting the inclination without causing destruction of the housing wall even when the anchoring direction is inclined. It is in.

The present invention is a mounting method of a bracket having a bowl-shaped bracket body and an anchor portion fixed to a building wall of a building,
The bracket body has a collar part that abuts the building wall of the building in the middle part, and an anchor fixing part that is screwed to one end of the anchor part at one end,
The anchor portion has a bracket fixing portion to be attached to the bracket main body on one end side, an anchor pin having a diameter-expanded head portion gradually expanding toward the end portion on the other end side, and the anchor pin It is attached so as to be slidable in the axial direction so as to surround the shaft, and is formed with an anchor ring having a slit cut in the axial direction from the edge on the enlarged diameter head side and having a convex portion on the edge on the bracket fixing part side ,
Attach the anchor part in the drilling hole formed in the building wall of the building,
The bracket body is inserted into the drilling hole until the collar part comes into contact with the outer surface of the housing wall with the anchor fixing part of the bracket body screwed to the bracket fixing part of the anchor part,
Further, by tightening the bracket body, the bracket pin is fixed to the housing wall by correcting the anchor pin so as to be perpendicular to the outer surface of the housing wall while pulling the anchor pin toward the bracket body side. It is an attachment method.

  According to the present invention, even when the anchor portion attached to the housing wall is inclined from the vertical with respect to the outer surface of the housing wall, the anchor portion is screwed into the bracket body without affecting the housing wall. At this time, the inclination can be corrected and the bracket body can be fixed to the housing wall at an original angle. Therefore, even if the anchor portion is attached with an inclination, the bracket body can be attached as it is without the need to redo the work. Therefore, when the anchor portion is attached, the accuracy of the operation of attaching the anchor portion perpendicularly to the surface of the housing wall can be relaxed, and the attachment operation of the bracket can be performed efficiently.

  Furthermore, since the anchor part used in the present invention has no through hole inside, the strength of the anchor part itself is improved.

  Based on FIGS. 1-4, an example of the bracket for body edge attachment which concerns on an example of this invention and an outer wall structure of the building using this bracket is demonstrated.

  1 is a side view showing an example of a bracket for mounting a trunk edge used in the present invention, FIG. 2 is a perspective view showing a part of an outer wall structure of a building under construction using the bracket of FIG. FIG. 4 is a cross-sectional view showing a part of the outer wall structure of the building, and FIGS. 4 and 5 are cross-sectional views showing a mounting process of the bracket of FIG.

  First, the trunk edge mounting bracket will be described. In FIG. 1, 1 is a bracket body, 2 is an anchor portion, 3 is a heat insulating material pressing plate, and 4 is a trunk edge receiving plate.

  The bracket body 1 may be made of plastic when heat insulation is important, but is generally made of a metal bowl such as steel or stainless steel, and has a female anchor as an anchor fixing portion at one end side central portion. A screw portion 5 is provided, and a male screw portion 6 for attaching the trunk edge receiving plate 4 is provided on the outer peripheral surface on the other end side. Moreover, the tool receiving part 7 which makes the shape of the head part of a volt | bolt is provided in the other end side edge part in which the external thread part 6 was provided. The tool receiving portion 7 can be provided as a concave portion in which a male hex wrench or the like is fitted, for example, at a location where a tool such as a wrench used for screw tightening is connected.

  A flange portion 8 projecting outward is provided at an intermediate portion of the bracket body 1, and the female screw portion 5 is formed by opening at one end face of the bracket body 1 protruding from the flange portion 8. The male screw portion 6 is formed on the other end side of the bracket body 1 protruding in the direction opposite to the one end side. Even if the depth of the female screw portion 5 is deep, it does not exceed the position of the flange portion 8 and is preferably in front of it so that the strength of the bracket is improved.

  The flange 8 is pressed against the wall 17 when the bracket of this example is attached to the wall 17 of the building as shown in FIGS. 2 and 3, and is pressed against the wall 17 ( A recessed portion 9 is formed at a position surrounding the bracket body 1 on the inner peripheral portion of the female screw portion 5 side. In addition, one or a plurality of adhesive filling confirmation through holes 10 are formed at positions corresponding to the depressions 9. The role of the recess 9 and the through hole 10 will be described later.

  When the bracket body 1 is fixed to the anchor portion 2 in a state in which the flange portion 8 is in contact with the outer surface of the housing wall 17, the flange portion 8 is subjected to external force in the direction perpendicular to the axis such as the weight of the exterior member 24. It has the effect of improving the degree of fixation and making it difficult for the bracket base to rotate. Further, by providing the flange portion 8, it is possible to easily attach the bracket body 1 with a certain length protruding from the housing wall 17.

  The anchor portion 2 includes an anchor pin 14 and an anchor ring 16 attached so as to be slidable in the axial direction so as to surround the anchor pin 14. One end side of the anchor pin 14 is a bracket fixing portion, which is a male screw portion 11. Further, the other end side has an enlarged head portion 12 that gradually increases in diameter toward the end portion on the other end side, and is near the base of the male screw portion 11 (on the enlarged head portion 12 side of the male screw portion 11). A stopper 13 is provided in the vicinity of the end portion. The anchor ring 16 has a slit 15 cut in the axial direction from the edge on the enlarged diameter head 12 side, and has a convex portion 16a on the edge on the bracket fixing portion side.

  The heat insulating material pressing plate 3 is a plate-like material having a female screw portion 19 penetrating in the center, and is projected around the bracket main body 1 by screwing the female screw portion 19 into the male screw portion 6 of the bracket main body 1. It is to be attached in the state. As shown in FIG. 2 and FIG. 3, the heat insulating material retainer plate 3 is provided with a heat insulating material 20 that is pressed against the outer surface of the housing wall 17 through the bracket body 1 fixed to the housing wall 17 by the anchor portion 2. 17 between them. The heat insulating material pressing plate 3 can be made of metal, but is preferably made of synthetic resin in order to suppress heat loss. Moreover, the heat insulating material pressing plate 3 can be omitted depending on the mounting form of the heat insulating material 20 as well as the case where the heat insulating material 20 is not provided.

  The trunk edge receiving plate 4 is a plate-like material having a female threaded portion 21 penetrating in the center, and by screwing the female threaded portion 20 into the male threaded portion 6 of the bracket body 1 from the rear side of the heat insulating presser plate 3, The bracket body 1 is attached so as to protrude around the periphery. As shown in FIG. 2 and FIG. 3, the trunk edge receiving plate 4 serves as an attachment portion of the trunk edge 22 and is usually made of metal. Further, the attachment position of the trunk edge receiving plate 4 can be adjusted by adjusting the screwing position of the bracket body 1 to the male screw portion 6.

  The distance between the surface of the bracket body 1 that contacts the housing wall 17 and the trunk edge receiving plate 4 is generally 20 to 150 mm, and 40 to 150 mm when the heat insulating material 20 is attached to the surface of the housing wall 17. Generally, 20-100 and 40-100 mm are used, respectively. The outer diameter of the bracket body 1 is determined by the distance between the surface in contact with the housing wall 17 and the trunk edge receiving plate 4, the weight of the assumed exterior member 24, seismic force, vibration load, and the like. 8-24 mm, more generally 10-20 mm is used.

  The bracket mounting method of the present invention will be described in detail with reference to FIGS. 4 and 5 by taking the case of using the bracket of FIG. 1 as an example. In the figure, 17 is a housing wall, 18 is a hole, 23 is an adhesive, and the same members as those in FIGS.

  As shown in FIG. 4A, a hole 18 having a shape in which a large diameter portion and a small diameter portion are continuous from the opening to the inside is formed on the outer surface side of the housing wall 17. The part 2 is inserted and driven until the rear end side of the anchor part 2 fits into the small diameter part of the hole 18, and the adhesive 23 such as resin mortar is filled in the hole 18.

  Next, as shown in FIG. 4 (b), the male screw part 11 of the anchor part 2 is screwed halfway into the female screw part 5 of the bracket main body 1 to connect the bracket main body 1. As described above, the bracket body 1 is driven until the flange 8 abuts against the outer surface of the casing wall 17.

  Furthermore, when the bracket body 1 is further tightened after tightening with a tightening tool connected to the tool receiving portion 7 and the collar portion 8 abuts against the outer surface of the housing wall 17, the anchor pin 14 is gradually drawn toward the bracket body 1. At this time, the anchor ring 16 is fixed to the housing wall 17 because the convex portion 16a bites into the inner wall of the drilling hole 18 and is caught, so that the enlarged-diameter head 12 formed at the end of the anchor ring 16 is anchored. Entering into the ring 16 and expanding the slit 15, the edge of the expanded anchor ring 16 bites into the inner wall of the hole 18, and the anchor ring 16 is firmly fixed to the housing wall 17. The convex portion 16a has a structure in which the resistance is small in the driving direction but the resistance is large in the exit direction.

  When the enlarged-diameter head 12 is pulled to a position where it cannot enter the anchor ring 16, the force required for tightening the bracket body 1 suddenly increases there. FIG. 5 (b)].

  In the present invention, in the step of attaching the bracket main body 1 to the anchor portion 2, the bracket main body 1 is driven until the collar portion 8 comes into contact with the housing wall 17, and then the anchor pin 14 stops being pulled and the bracket main body 1 is tightened. The anchor pin 14 moves a predetermined distance between FIG. 5A and FIG. Therefore, even when the direction of the drilling hole 18 or the direction in which the anchor pin 14 is driven into the drilling hole 18 is inclined, the flange 8 abuts on the surface of the casing wall 17 and this direction is brought into contact with the surface of the casing wall 17. Since the anchor pin 14 is attracted while being corrected to be vertical, the inclination of the anchor pin 14 is absorbed and corrected between FIGS. 5 (a) to 5 (b). At this time, since the anchor ring 16 fixed to the housing wall 17 does not move, there is no fear of destroying the housing wall 17.

  In the above process, the structure in which the small diameter portion and the large diameter portion are continuous as the hole 18 is illustrated. However, the present invention is not limited to this, and the same effect can be obtained by drilling only the small diameter portion. can get. Moreover, what is necessary is just to select use of the adhesive agent 23 as needed. Further, the relationship between the male screw portion and the female screw portion can also be reversed.

  Next, the outer wall structure of a building will be described with reference to FIGS.

  As shown in FIG. 3, a hole 18 is formed on the outer surface side of the building wall 17 of the building, and the anchor portion 2 is driven into the hole 18 from the enlarged head 12 side.

  The hole 18 may have a diameter that is slightly larger than the diameter-expanded head 12 of the anchor portion 2 and has a diameter that allows the convex portion 16a to properly contact. However, for example, resin mortar is formed in the hole 18 into which the anchor portion 2 is driven. When injecting the adhesive 23 such as, it is preferable to make the diameter of the rear end side (opening side) of the drilling hole 18 larger than the diameter of the tip side (bottom side) so that the adhesive 23 can be easily injected. .

  A female screw portion 5 (see FIG. 1) of the bracket body 1 is screwed into the male screw portion 11 of the anchor portion 2. As described above, this screwing is performed by further tightening the bracket body 1 even after the flange portion 8 of the bracket body 1 abuts against the outer surface of the housing wall 17 with a wrench connected to the tool receiving portion 7. ing. As a result of this tightening, the anchor pin 14 is gradually drawn, the enlarged diameter head portion 12 enters the anchor ring 16 and expands the diameter, and the anchor ring 16 strongly engages the inner wall of the hole 18 so that the anchor portion 2 is The bracket body 1 is attached to the anchor portion 2 while being fixed in the hole 18.

  When injecting the adhesive 23 into the drilling hole 18, it is preferable to inject a sufficient amount of the adhesive 23, but when an excessive amount of the adhesive 23 is injected, the bracket body is inserted into the male screw portion 11 of the anchor portion 2. When one female screw part 5 (see FIG. 1) is screwed, excessive adhesive 23 overflows from the hole 18 and the close contact of the flange part 8 with the casing wall 17 may be prevented. Arise. The depression 9 provided in the flange 8 is for preventing this, and the adhesive 23 overflowing from the hole 18 is accommodated in the depression 9, and the surplus adhesive 23 passes through. It will be pushed out of the hole 10. Therefore, by confirming that the adhesive 23 is pushed out from the through hole 10, it can be known whether or not the adhesive 23 is sufficiently filled.

The bracket body 1 is fixed to the housing wall 17 in a large number as described above, and the heat insulating material 20 is pressed through the bracket body 1 on the outer surface of the housing wall 17 to which the bracket body 1 is fixed. ing. This heat insulating material 20 is sandwiched between the housing wall 17 by a heat insulating material pressing plate 3 screwed into the male screw portion 6 of each bracket body 1. As the heat insulating material 20, synthetic resin heat insulating materials such as phenol foam, polystyrene foam, and rigid urethane foam, and fiber heat insulating materials such as glass wool can be used. Of these 5% compression strength of the distortion at the 50 N / cm ² or less, preferably 10 to 30 N / cm ² of about phenolic foam based insulation material, which polyester nonwoven fabric is used for the surface material is most suitable. When the heat insulating material 20 penetrates the bracket main body 1, it can be pierced without drilling a hole in the heat insulating material 20, and is easily stable with the heat insulating material pressing plate 3 having a diameter of about 3 to 10 cm. Can be fixed to. If the heat insulating material 20 or the surface material is harder, it is necessary to process a pilot hole. If the heat insulating material 20 is softer, the peripheral portion is greatly collapsed when pierced, and repair is required, or between the heat insulating material pressing plate 3 and the heat insulating material 20 Therefore, it is difficult to generate an appropriate repulsive force, so that the insulation of the heat insulating material 20 is unstable and misalignment is likely to occur. In order to prevent displacement of the heat insulating material retainer plate 3, special means are required such as fixing the heat insulating material retainer plate 3 and the bracket body 1 with screws and further preventing loosening such as a double nut.

  A barrel edge receiving plate 4 is further screwed onto the male threaded portion 6 of each bracket body 1, and a trunk edge 22 spanning between the plurality of trunk edge receiving plates 4 is connected to the trunk edge receiving plate 4. Are attached by screws 25 or the like. As the trunk edge 22, a hat-type material in which both ends of a long metal material having a downward U-shaped cross section are bent outwardly to form a hook-shaped protrusion can be used. The trunk edge 22 in this example is made of this hat-type material, and is attached by fixing the hook-shaped protrusion to the trunk edge receiving plate 4 with a screw or the like. Further, an exterior material 24 is attached to the top edge of the hat-shaped material body edge 22 with screws or the like.

  The trunk edge receiving plate 4 is preferably attached at a position away from the heat insulating material 20 in order to secure a sufficient ventilation space between the heat insulating material 20 and the exterior material 22. Moreover, although the trunk | rim edge 22 is normally attached to the vertical direction, it can also be attached to a horizontal direction. Further, instead of attaching the exterior material 22 to the body edge 22, a secondary body edge (not shown) is attached in a direction intersecting the body edge 22, and the exterior material 22 is attached to the secondary body edge. it can.

It is a side view which shows an example of the bracket used for this invention. It is a perspective view which shows a part of outer wall structure of the building under construction using the bracket of FIG. It is sectional drawing which shows a part of building outer wall structure using the bracket of FIG. It is sectional drawing which shows preferable embodiment of the attachment method of the bracket of this invention. It is sectional drawing which shows preferable embodiment of the attachment method of the bracket of this invention. It is sectional drawing which shows an example of the attachment method of the conventional bracket.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bracket main body 2 Anchor part 3 Insulation material pressing plate 4 Trunk edge receiving plate 5 Female thread part (anchor fixing part)
6 male screw portion 7 tool receiving portion 8 flange portion 9 hollow portion 10 through hole 11 male screw portion 12 enlarged diameter head 13 stopper 14 anchor pin 15 slit 16 anchor ring 16a convex portion 17 housing wall 18 drilling hole 20 heat insulating material 22 trunk Edge 23 Adhesive 24 Exterior material 50 Anchor part 51 Through hole 52 Driving pin 53 Ball 54 Anchor pin 55 Slit 56 Enlarged part 58 Male thread part 61 Bracket main body 68 Gutter part

Claims (1)

A bracket mounting method having a hook-shaped bracket body and an anchor portion fixed to a building wall of a building,
The bracket body has a collar part that abuts the building wall of the building in the middle part, and an anchor fixing part that is screwed to one end of the anchor part at one end,
The anchor portion has a bracket fixing portion to be attached to the bracket main body on one end side, an anchor pin having a diameter-expanded head portion gradually expanding toward the end portion on the other end side, and the anchor pin It is attached so as to be slidable in the axial direction so as to surround the shaft, and is formed with an anchor ring having a slit cut in the axial direction from the edge on the enlarged diameter head side and having a convex portion on the edge on the bracket fixing part side ,
Attach the anchor part in the drilling hole formed in the building wall of the building,
The bracket body is inserted into the drilling hole until the collar part comes into contact with the outer surface of the housing wall with the anchor fixing part of the bracket body screwed to the bracket fixing part of the anchor part,
Further, by tightening the bracket body, the bracket pin is fixed to the housing wall by correcting the anchor pin so as to be perpendicular to the outer surface of the housing wall while pulling the anchor pin toward the bracket body side. Mounting method.

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