JP2005179927A - Fixture and installation structure of building material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fixture causing little reduction in installation strength of a building material. <P>SOLUTION: This fixture 8 fixes the building material 31 to a backing 30 of a building, and is provided with a drill part 10, a screw part 25 and a tapered part 27 over a head part 26 from a tip part, and is constituted so that projection strips 8a can be brought into pressure contact with a peripheral surface of a hole part 32 formed in the building material 31 by a bored hole of the drill part 10, by arranging a plurality of projection strips 8a in the substantially parallel direction to the screwing-in direction of the fixture 8 in the tapered part 27. Thus, the projection strips 8a can be brought into pressure contact with the peripheral surface of the hole part 32 by pushing the tapered part 27 in the hole part 32 of the building material 31. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a fixture used when a building material such as an exterior material is attached to the foundation of a building, and a mounting structure of the building material using the fixture, and in particular, a roof material is laid on a roof foundation such as a field board. In this case, it can be suitably used.

  Conventionally, a roof of a building is formed by spreading a roofing material as a building material on a roof base of a building formed by placing a field plate made of plywood or the like on a roof structure material. When attaching the roofing material to the main plate, a screw or the like is screwed into the base plate from the surface of the roofing material (for example, see Patent Document 1).

However, with conventional screws, there is a case where the roof material is screwed into the roof material and then loosened by reverse rotation. This may cause the roof material to be insufficiently fixed by the screw, which may reduce the mounting strength of the roof material. .
JP 2003-268933 A

  The present invention has been made in view of the above points, and an object of the present invention is to provide a fixture and a building material mounting structure in which the mounting strength of the building material is unlikely to decrease.

  The fixing tool 8 according to the present invention is a fixing tool 8 for fixing a building material 31 to a foundation 30 of a building, and is provided with a drill part 10, a screw part 25, and a taper part 27 from a tip part to a head part 26. The taper portion 27 is provided with a plurality of ridges 8a in a direction substantially parallel to the screwing direction of the fixture 8, and the ridges 8a are formed in the building material 31 by the drilling of the drill portion 10 and the peripheral surface of the hole portion 32. It is characterized in that it can be pressed against.

  In the present invention, by pressing the tapered portion 27 into the hole 32 of the building material 31, the protrusion 8 a can be pressed against the peripheral surface of the hole 32, and the friction between the building material 31 and the fixture 8 is projected. It can be enlarged by 8a, and the rotation opposite to the rotation at the time of screwing is less likely to occur in the fixture 8, whereby the fixture 8 is less likely to loosen and the building material 31 is attached. The strength is difficult to decrease.

  The mounting structure of the building material 31 according to the present invention is formed by drilling the building material 31 with the drill portion 10 of the fixture 8 according to claim 1 to form the hole portion 32, and the tapered portion 27 is pushed into the hole portion 32 of the building material 31. The fixing member 8 is screwed in, and the building material 31 is attached to the foundation 30 by pressing the protrusions 8a of the taper portion 27 on the peripheral surface of the hole portion 32 of the building material 31.

  In the present invention, the friction between the building material 31 and the fixture 8 can be increased by the protrusion 8a, and rotation in the direction opposite to the rotation at the time of screwing is less likely to occur in the fixture 8. As a result, the fixture 8 is less likely to loosen, and the mounting strength of the building material 31 is less likely to decrease.

  The present invention can prevent loosening of the fixture, makes it difficult for the mounting strength of the building material to decrease, and allows the building material to be firmly attached.

  Hereinafter, the best mode for carrying out the present invention will be described.

  The fixture 8 of the present invention is made of a metal such as stainless steel or brass, and is formed in a shape such as a screw or a screw as shown in FIGS. 10, a screw portion 25 at a rear portion of the drill portion 10, a tapered portion 27 at a rear portion of the screw portion 25, and a head portion 26 at a rear end portion.

  The drill portion 10 is sharply pointed and formed in a drill-like shape, so that the drill portion 10 can be drilled in the building material 31 and the base 30. The screw portion 25 is formed by providing a screw groove 11 (male screw) on the outer surface thereof. The taper portion 27 is formed in a substantially truncated cone shape such that the outer diameter gradually decreases as it approaches the distal end side (closer to the screw portion 25). A plurality of protrusions 8 a are provided on the surface of the tapered portion 27. The protrusion 8a is formed in a long line shape in the front-rear direction (a direction substantially parallel to the longitudinal direction of the fixture) along the surface of the taper portion 27, and the protrusion dimension from the surface of the taper portion 27 is 0. 1 to 0.5 mm, the dimension between adjacent protrusions 8a and 8a gradually spreads from the lower part toward the upper part, and the dimension between adjacent protrusions 8a and 8a at the lower part of the tapered portion 27 is 0.2 to 0.5 mm. The dimension between the adjacent protrusions 8a and 8a in the upper portion of the tapered portion 27 can be processed to 0.5 to 1.0 mm, but is not limited thereto. The head portion 26 has a larger outer diameter than the maximum outer diameter of the tapered portion 27 and is formed in a disk shape.

  FIG. 1 shows an example of a mounting structure for a building material 31 according to the present invention. In this example, the roof base is used as the base 30 of the building, and the roof material 7 is used as the building material 31. The foundation 30 is composed of a field plate 5 and a structural member 6 of a building such as a beam. Although the field board 5 is formed with the panel 4, this panel 4 is conventionally used as building materials, such as a wall panel, a roof panel, and a floor panel. The panel 4 may be formed by providing the metal plate 1 on at least one side of the core material 3. For example, the core material 3 is filled between the two metal plates 1 and 2 including the building material and the back plate. A sandwich panel formed by bonding can be used. The metal plates 1 and 2 can be formed of stainless steel plate, galvanized steel plate, painted steel plate, galvalume steel plate (zinc-aluminum alloy plated steel plate), and the core material 3 is a resin foam such as phenol foam or urethane foam. Although it can form with inorganic fiber bodies, such as glass wool and rock wool, it is not limited to these. Moreover, although the thickness of the metal plates 1 and 2 can be 0.2-1.6 mm and the thickness of the core material 3 can be 15-200 mm, it is not limited to these. Furthermore, as the panel 4, a panel connected by concavo-convex fitting may be used.

  In the present invention, conventionally used roofing material 7 can be used as it is. The roofing material 7 shown in FIG. 3 is formed in a substantially plate shape by bending a metal plate similar to the above, and the eaves side end of the roofing material 7 (below the roof gradient). A fitting recess 20 is formed on the side of the roof material 7 and the surface side of the roof material 7 (upper surface side) is located near the ridge side end of the roof material 7 (upward with respect to the slope of the roof). The fitting convex part 21 which protrudes is provided. Furthermore, the ridge side end of the roof material 7 is formed as a fixed piece 23, and is extended to the ridge side from the fitting convex portion 21. Note that the roofing material 7 shown in FIG. 3 is an example, and may be formed of other materials and shapes.

  Here, the groove width L of the screw groove 11 of the fixture 8 is formed smaller than the thickness of the metal plate 1 of the panel 4. The outer diameter (the outer diameter of the thread 12) D of the screw portion 25 is formed to be approximately 0.5 to 2.0 mm larger than the outer diameter d of the drill portion 10, and the screw portion 25 is a fixture. When the screw 8 is screwed into the base plate 5, the metal plate 1 of the base plate 5 in the peripheral portion of the fixture 8 is pressed downward so as to be bent so as to be bent.

  And in attaching the roofing material 7 in this invention, it carries out as follows. First, the panel 4 is placed in a state where the core material 3 is lower than the metal plate 1 by mounting and fixing the panel 4 on the structural material 6 of the building composed of a purlin, rafters, and the like. A base 30 is formed as the base plate 5. At this time, the panel 4 can be fixed to the structural member 6 by inserting a text. Further, a plurality of panels 4 can be arranged on the structural material 6 to form a roof base, but if the panels 4 can be connected by uneven fitting, adjacent panels 4 are connected by uneven fitting. To do. Next, the roof material 7 is placed on the panel 4 fixed to the structural material 6. At this time, the fixing piece 23 provided on the roof material 7 is brought into contact with the metal plate (upper surface plate) 1 on the surface side of the panel 4. Next, the roofing material 7 is fixed onto the panel 4 by screwing (screwing) the fixing tool 8 into the fixing piece 23 from the surface side of the roofing material 7. That is, the screwing direction of the fixing tool 8 is substantially parallel to the longitudinal direction of the fixing tool 8 and is substantially perpendicular to the fixing piece 23 of the roofing material 7 and the surface of the metal plate 1 of the panel 4. Further, although the fixture 8 passes through the fixing piece 23 and the metal plate 1 of the panel 4 and reaches the core member 3, it is not necessary to penetrate the core member 3 or the metal plate (lower surface plate) 2 on the back surface side. However, it does not deny that the fixture 8 penetrates the core material 3 or the metal plate 2 on the back surface side.

  After fixing one roofing material 7 as described above, another roofing material 7 is fixed to the surface of the panel 4 in the same manner as described above. At this time, the roof materials 7 and 7 adjacent to each other in the eave building direction are connected so that the fitting concave portion 20 of the roof material 7 on the ridge side is fitted to the fitting convex portion 21 of the roof material 7 on the eave side. It is. By sequentially constructing the roof material 7 from the eave side to the building side in this way, a plurality of roof materials 7 can be attached to the surface of the panel 4 to form a roof.

  In this invention, the attachment strength of the roofing material 7 becomes difficult to fall by attaching the roofing material 7 to the field board 5 as mentioned above. That is, when the fixing tool 8 is screwed into the fixing piece 23 of the roofing material 7, the drilling portion 10 at the tip portion drills the fixing piece 23, the metal plate 1 on the surface side of the panel 4, and the core material 3. Although the fixing tool 8 is screwed, the outer diameter of the drill portion 10 is smaller than the outer diameter of the screw portion 25 of the fixing tool 8, so that the drilling portion of the fixing piece 23 by the drill portion 10 is formed. The screw portion 25 is pressed downward to bend, and when the fixing device 8 is screwed in, the drilling portion of the fixing piece 23 by the drill portion 10 is pressed from the upper side by the taper portion 27 and bent downward. As a result, a hole 32 into which the tapered portion 27 is pushed is formed in the roof material 7. Then, as shown in FIG. 4, the peripheral surface of the hole portion 32 and the protrusion 8 a of the tapered portion 27 come into pressure contact with each other. Therefore, the peripheral surface of the hole portion 32 of the roof material 7 and the fixture 8 Friction is increased by the protrusions 8a, and rotation in the direction opposite to the rotation at the time of screwing can be made difficult to occur in the fixture 8. As a result, the fixture 8 can be prevented from loosening and the roofing material can be prevented. The attachment strength of 7 becomes difficult to fall.

  Further, since the outer diameter of the drill portion 10 is smaller than the outer diameter of the screw portion 25 of the fixture 8, the hole formed in the metal plate 1 on the surface side by the drill portion 10 is outside the screw portion 25. Further, the groove width L of the screw groove 11 formed in the screw portion 25 is smaller than the thickness of the metal plate 1 on the surface side, and the perforation formed by the drill portion 10 is smaller than the diameter. It is possible to prevent the partial metal plate 1 from entering the screw groove 11. Accordingly, when the fixing tool 8 is screwed into the fixing piece 23 of the roofing material 7, the drilled portion of the metal plate 1 by the drill portion 10 is pressed from the upper side (surface side) by the screw portion 25 (the driving portion 28). As a result, as shown in FIG. 1, the metal plate 1 is bent downward (inward of the panel 4) in the vicinity of the periphery of the screw portion 25 of the fixture 8. A locking portion 9 is formed. Further, the tip of the locking portion 9 formed in this way is engaged in a state where a part (corner portion) thereof is inserted into the screw groove 11 formed on the peripheral surface of the screw portion 25 of the fixture 8. The locking portion 13 is locked to the thread 12 formed as the locking portion 13, whereby the locked portion 13 of the fixing tool 8 is locked to the locking portion 9, and the fixing tool 8 is removed from the base plate 5. It becomes difficult. And since it becomes difficult to remove the fixture 8 from the field board 5 in this way, the roof material 7 can be firmly fixed to the field board 5 by the fixture 8, and the attachment strength of the roof material 7 becomes difficult to fall. Is.

  FIG. 5 shows another embodiment of the present invention. In this embodiment, a roof slate such as a fiber-reinforced cement tile is used as the roof material 7. As shown in FIG. 6, such a roofing material 7 is formed in a pentagonal shape in plan view having a top portion 7 a and a shoulder portion 7 b, and has a waterproof groove 7 c in the lateral direction, having a width dimension of 910 mm, from the front end Although the dimension to the top part 7a can be 414 mm, the dimension from the front end to the shoulder part 7b is 332 mm, and the thickness is 4.5 mm, the shape and dimensions of the roofing material 7 are not limited to the above.

  Also in this embodiment, the roofing material 7 can be constructed in the same manner as described above. That is, after placing the roofing material 7 on the panel 4 fixed to the structural material 6, the fixing tool 8 is screwed into the roofing material 7 and the panel 4 from the surface side of the roofing material 7. As shown in FIG. 4, the roof material 7 is fixed on the panel 4, and when the screwing of the fixing tool 8 is completed, the hole portion 32 into which the tapered portion 27 is pushed is formed by the drill portion 10 in the same manner as described above. When the fixing tool 8 is screwed into the roofing material 7, the inner surface of the hole drilled by the drill portion 10 can be screwed in while being shaved with the projection 8 a, and the fixing tool 8 and the hole portion 32 are formed. It is possible to attach the roofing material 7 without shakiness by making it difficult for gaps to occur between them. As shown in FIG. 7, the peripheral surface of the hole portion 32 and the protrusion 8 a of the tapered portion 27 come into pressure contact with each other, so that the friction between the peripheral surface of the hole portion 32 of the roof material 7 and the fixture 8 is achieved. Is increased by the protrusion 8a, and rotation in the opposite direction to the rotation at the time of screwing can be made difficult to occur in the fixture 8. As a result, the fixture 8 can be prevented from loosening and the roofing material 7 can be prevented. The attachment strength is less likely to decrease.

  In addition, the metal plate 1 is curved downward (inward of the panel 4) in the vicinity of the periphery of the screw portion 25 of the fixture 8, and the latching portion 9 is formed at the curved portion. The tip of 9 is locked to a screw thread 12 formed as a locked portion 13 with a part (corner portion) inserted into a screw groove 11 formed on the peripheral surface of the screw portion 25 of the fixture 8. As a result, the locked portion 13 of the fixing tool 8 is locked to the locking portion 9, and the fixing tool 8 is not easily removed from the field plate 5. And since it becomes difficult to remove the fixture 8 from the field board 5 in this way, the roof material 7 can be firmly fixed to the field board 5 by the fixture 8, and the attachment strength of the roof material 7 becomes difficult to fall. Is. In addition, as shown in FIG. 5, in the several roof material 7 attached on the panel 4, the roof materials 7 and 7 adjacent to an eaves-ridge direction are constructed, overlapping a part.

  Hereinafter, the present invention will be described specifically by way of examples.

  As the roofing material 7, a roof slate having a shape shown in FIG. 6 and having a thickness of 5 mm, a width of 910 mm, a length of 414 mm, a working width of 910 mm, and a working length of 182 mm was used.

As the panel 4 for the base plate 5, a sandwich panel having a thickness of 35 mm, a width of 600 mm, a length of 1000 mm, metal plates 1 and 2 having a thickness of 0.35 mm, and a core material ³ of urethane foam having a density of 35 kg / m ³ is used. Using.

  The fixture 8 is as shown in FIG. 1 and has a diameter of 4 mm, a length of 27 mm, a protrusion dimension of the protrusion 8 a of 0.1 mm, and the distance between the protrusions 8 a and 8 a is 0.5 mm at the lower part of the taper part 27 and the upper part. 1.0 mm and made of stainless steel.

  And the roof material 7 was attached to the panel 4 by the method similar to actual construction using the fixture 8, and it was set as the sample.

  Next, using this sample, the strength of the roof material 7 attached to the panel 4 was tested. This test was conducted in accordance with the “Guidelines for Design and Construction of Wind Resistant Roofs” of the Housing Exterior Technical Center. That is, the roofing material 7 was lifted evenly with respect to the working surface by pulling up the jig holding the holding position between the two steel pipes and holding the force applied to the roofing material 7 fixed to the panel 4 with a force device. The set load for lifting at this time was 40 kg. Further, the raising and releasing of the roof material 7 were repeated 150 times. In addition, the negative pressure concerning the roofing material 7 at the time of a strong wind can be assumed by acting repeatedly raising and cancellation | release of the roofing material 7. FIG.

  As a result of the above test, there was no abnormality such as the roof material 7 being detached from the panel 4 even when the roof material 7 was repeatedly lifted and lifted and released. Moreover, after repeating the lifting and lifting cancellation of the roofing material 7, no abnormality was observed even when a lifting load of 70 kg was applied. Further, the panel 4 showed a mountain-shaped deformation of about 1 mm in height at the threaded portion of the fixture 8, but there was no practical problem.

  As described above, the present invention has a resistance to a negative pressure during a strong wind.

It is a partial sectional view showing an example of the attachment structure of the roofing material of the present invention. An example of embodiment of a fixing tool same as the above is shown, (a) is a perspective view, (b) is a front view. It is a perspective view which shows an example of the roof material same as the above. It is a partial expanded sectional view same as the above. It is a partial cross section figure which shows the other example of the attachment structure of the building materials same as the above. It is a top view which shows the other example of the roofing material same as the above. It is a partial expanded sectional view same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 8 Fixing tool 8a Projection 10 Drill part 25 Screw part 27 Tapered part 30 Base 31 Construction material 32 Hole

Claims (2)

  A fixture for fixing building materials to the foundation of a building. A drill, screw, and taper are provided from the tip to the head, and a plurality of protrusions are screwed into the taper. A fixing tool provided in a direction substantially parallel to the direction and capable of being pressed against a peripheral surface of a hole portion formed by drilling a drill portion in a building material.   The building material is drilled by the drill portion of the fixture according to claim 1 to form a hole portion, and the fixture is screwed in until the tapered portion is pushed into the hole portion of the building material, and the peripheral surface of the hole portion of the building material is tapered. A construction material mounting structure, characterized in that the construction material is attached to the ground by pressing the ridges of the part.

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