JP4548321B2 - Eaves mounting structure - Google Patents

Description

  The present invention relates to an eaves ridge attached to the eaves of a building, and more particularly, to an eave ridge mounting structure for preventing the occurrence of cracks in an attachment portion in a support device fixed to the eaves.

  Conventionally, in order to attach an eave ridge composed of an eave ridge body and a supporting device to the eaves of a building, the supporting device is directly fixed to the nose plate of the building with a fixing tool such as a nail or a screw.

  The material of the support device is generally a synthetic resin material such as polycarbonate, from the viewpoint of excellent weather resistance and little change with time, and the material of the nose plate is cement-based material or PVC-based material (soft polyvinyl chloride) A vinyl chloride steel sheet with vinyl laminated on the surface thereof is used.

  However, since the mounting portion of the synthetic resin support device comes into contact with the nose plate made of an alkaline material or a vinyl chloride material, the plasticizer contained in the polyvinyl chloride of the vinyl chloride steel plate or the alkaline component of the cement material is aged over time. Due to the change, the mounting portion of the support device may be moved to deteriorate the mounting portion. In addition, when the critical stress is exceeded due to a synergistic effect with the local stress concentration generated by the tightening force of a fixture such as a nail or a screw, there is a problem that a stress corrosive crack is generated in the mounting portion.

  A method for solving this problem is disclosed in Patent Document 1. As shown in FIGS. 4A and 4B, the eaves bowl 9 of Patent Document 1 includes a support device 3 and an eaves bowl body 4, and the nose board 5 is formed by laminating a PVC steel plate 6 on the outer surface of the decorative board 7. Thus, a soft polyvinyl chloride layer is laminated on the outer surface of the PVC steel plate 6.

  The support device 3 is made of polycarbonate, and the mounting portion 1 formed on the support device 3 has irregularities, and the mounting portion 1 is fixed to the nose plate 5 by a fixing tool such as a nail or a screw (not shown). At this time, the convex portion as the contact portion 2 comes into contact with the soft polyvinyl chloride layer on the outer surface of the PVC steel plate 6.

As described above, since the contact area of the attachment portion 1 with which the soft polyvinyl chloride layer of the decorative board 7 abuts is reduced by the unevenness, the influence of the plasticizer that moves from the soft polyvinyl chloride to the attachment portion 1 can be reduced, and the time The occurrence of cracks in the mounting portion 1 due to the change can be reduced.
Japanese Patent No. 3651822

  However, in the configuration of Patent Document 1, the contact area between the decorative plate 7 and the mounting portion 1 can be reduced by unevenness, but since it is not completely non-contact, it is possible to completely prevent the occurrence of cracks in the mounting portion 1 due to changes over time. It was difficult.

  Moreover, since an alkali component or a plasticizer is transferred to the mounting portion 1 through rainwater into the insertion hole of a fixing tool such as a nail or a screw, the material of the mounting portion 1 becomes brittle and cracks are likely to occur. .

  Therefore, the present invention has been made in view of the above facts, and its purpose is to prevent stress-corrosion cracks by preventing the migration of alkali components in cementitious materials or plasticizers in PVC steel sheets. Provided is an eave ridge mounting structure comprising a support device for a synthetic resin material such as polycarbonate.

The invention of claim 1 is an eaves wall mounting structure composed of an eaves main body and a synthetic resin support device fixed to a nose plate of a building, wherein the eaves main body has a concave groove shape in cross section. A front member and a rear ear part which are long materials, are folded back at the upper end part which is far from the respective building of the concave groove shape to form a front ear part and a rear ear part, and lock the front ear part. When the supporting device formed by connecting a rear member that locks with a connecting member is fixed to the nose plate via a plate-shaped mounting portion provided in the rear member or the connecting member, the mounting portion wherein the insertion hole of the fastener, the sleeve to isolate said mounting portion from said nose plate and said fastener, with provided with a flange portion along the front and back surfaces of the mounting portion is inserted into the insertion hole The tube section is divided into two at the middle position of the tube section. Abutment faces is characterized in that it is fixed by an adhesive.

  According to a second aspect of the present invention, there is provided an eaves-mounting structure according to the first aspect, wherein the sleeve is formed of an alkali-resistant material or a plasticizer-resistant material.

  According to the first aspect of the present invention, there is an eaves wall mounting structure comprising an eaves wall main body fixed to a nose plate of a building and a synthetic resin material support device, wherein the mounting portion includes the nose plate and the Since there is no contact with the fixture, the chemical composition of the nose plate can be prevented from transferring to the mounting portion of the support device, so that the strength can be prevented from being lowered, and the stress corrosion resistance of the mounting portion of the support device can be prevented. Crack generation can be prevented.

  In addition, since the fastening force of the fixture is handled by the area of the flange portion, the fastening stress due to the fixture is reduced and the concentrated stress in the vicinity of the insertion hole of the mounting portion is greatly reduced. Occurrence can be prevented.

  According to invention of Claim 2, since the said sleeve is an alkali-proof material or a plasticizer-proof material, it can prevent the transition to the support apparatus of the alkali component of the cement-type material of a nose board, or the plasticizer of a PVC steel plate. Therefore, it is possible to prevent the occurrence of stress corrosive cracks in the mounting portion of the support device, which is a synthetic resin material.

<Structure of eaves>
Embodiments of the present invention will be described below with reference to FIGS.

  As shown in FIGS. 1, 2, and 3, the eaves 10 of this embodiment includes an eaves main body 12 and a support device 13. .

  The eaves main body 12 is a long material having a concave groove shape in cross section composed of a front wall 14, a bottom portion 15 and a rear wall 16, respectively, and an upper end portion 14a of the front wall 14 far from the building and a rear wall 16 near the building. The front ear portion 17 and the rear ear portion 18 are formed by folding the upper end portion 16a.

  The support device 13 has a configuration in which a front member 20 that locks the front ear portion 17 and a rear member 21 that locks the rear ear portion 17 are connected by a connection member 22. A fixed attachment portion 23 is fixed to the nose plate 11 via a fixture 24.

  The fixing tool 24 is a screw composed of a screw part 24a and a head part 24b, and is preferably used by applying a waterproof caulking material to the fixing tool 24.

  Here, a sleeve 25 is mounted to the insertion hole 26 for the fixture 24 of the mounting portion 23 with flanges 25a and 25d at both ends thereof, and the flanges 25a and 25d extend along both side surfaces 23a of the mounting portion 23, respectively. Abut.

  More specifically, the tube portion 25b of the sleeve 25 inserted into the insertion hole 26 has a cylindrical shape having an inner diameter S1 and a thickness T1, and the inner length L1 between the pair of flanges 25a and 25d is equal to the thickness L1 of the mounting portion 23. Are formed to the same dimensions. The flanges 25a and 25d have a disk shape with a diameter S and a thickness T, and an insertion hole 26 with a diameter S1 is formed at the center. For this reason, the outer length L of the flanges 25a and 25d is L = L1 + 2 × T.

  In addition, after the sleeve 25 is manufactured in the state of being divided into two at the position 25c of the intermediate portion of the tube portion 25b, the sleeve 25 is inserted into the insertion holes 26 from both side surfaces 23a of the mounting portion 23, respectively. At this time, the position 25c where the tube portion 25b in the two-divided state comes into contact with each other by the tightening force of the fixing tool 24 is pressed and the gap disappears. However, preferably, the gap is surely provided by applying an adhesive to the position 25c in advance. It can be fixed in a state without any.

  When the support device 13 is a synthetic resin material such as polycarbonate and the nose plate 11 is a cement-based material, the sleeve 25 is formed of a synthetic resin made of an alkali resistant material such as hard PVC, polypropylene, polystyrene, or neoprene. .

  Further, when the support device 13 is made of a synthetic resin material such as polycarbonate and the nose plate 11 is formed by laminating a vinyl chloride steel plate having a surface laminated with soft polyvinyl chloride on the outer surface of the decorative plate, the sleeve 25 is resistant to damage. The plasticizer material is formed of a compatible resin to which a plasticizer such as a hard vinyl chloride resin is not added, an acrylic polymer, silicon rubber, or a metal material.

<Action of eaves>
As described above, the sleeve 25 has a structure in which a pair of circular flanges 25a and 25d are connected to both ends of the circular tube portion 25b, and an insertion hole 26 having a diameter S1 is formed at the center, and the pair of flanges 25a and 25d. The inner length L1 between them and the thickness L1 of the mounting portion 23 have the same dimensions.

  For this reason, when the attachment portion 23 of the support device 13 is fixed to the nose plate 11 by the fixture 24, the one flange 25d and the attachment portion 23 are fixed to the nose plate 11 in close contact with no gap. Similarly, the other flange 25a and the attachment portion 23 are fixed to the head 24b of the fixture 24 in a closely contacted state with no gap.

  Thus, even if the alkali component or plasticizer of the nasal plate 11 is melted due to aging, the alkali component or plasticizer is transferred from the inside of the tube portion 25b sealed by the head 24b of the fixture 24 to the outside. There is no.

  Furthermore, even if an alkali component or plasticizer contacts the sleeve 25, the sleeve 25 is made of an alkali-resistant material or plasticizer material so that the mounting portion 23 does not change and does not become brittle. As a result, the occurrence of stress-corrosive cracks can be prevented.

  Since the fastening pressure of the fixture 24 is received by the area of the flanges 25a and 25d, the surface pressure is reduced, and local stress concentration on the mounting portion 23 can be relaxed, and stress corrosive cracks can be prevented.

  As mentioned above, although embodiment of this invention was described based on drawing, all of these Examples showed an example of this invention, and it cannot be overemphasized that this invention should not be limited to these.

  For example, the support device 13 may have a composite material structure other than the synthetic resin material such as polycarbonate except for the attachment portion 23. Instead of dividing the sleeve 25 into two at the position 25c in the middle of the tube portion 25b, the sleeve 25 is divided at the portion where the sleeve 25 intersects with the flanges 25a and 25d (both flanges) or at the portion where either the flange 25a or the flange 25d intersects. Also good.

It is a side view which shows the state in which the eaves bowl was attached to the nose board of the building in embodiment of this invention. It is an AA arrow line view of FIG. 1 in embodiment of this invention. FIG. 2 is a detailed cross-sectional view of FIG. 1B (showing a set of a fixture 24 and a sleeve 25) in the embodiment of the present invention. FIG. 5A is a side sectional view showing a state of attachment of a conventional eaves bowl, and FIG. 5B is a detailed perspective view of the attachment portion 1 and the contact surface 2 of FIG.

Explanation of symbols

10 eaves 11 nose plate 12 eaves main body 13 support device 14 front wall 14a upper end 15 bottom 16 rear wall 16a upper end 17 front ear 18 rear ear 20 front member 21 rear member 22 connecting member 23 attachment 23a side 24 Fixing tool 24a Screw portion 24b Head 25 Insertion hole 25 Sleeve 25a Flange 25d Flange 26 Insertion hole

Claims (2)

An eaves wall mounting structure consisting of an eaves body body and a synthetic resin support device fixed to the nose plate of the building,
The eaves main body is a long material having a concave groove shape in cross section, and the upper ear portion and the upper ear portion near the upper end portion far from the respective buildings of the concave groove shape are folded back to form a front ear portion and a rear ear portion,
Via the plate-shaped attachment part which equips the said rear member or a connection member with the said support apparatus formed by connecting the front member which latches the said front ear part, and the rear member which latches the said back ear part with a connection member. When fixing to the nose plate with a fixing tool,
The insertion hole for the fastener of the mounting portion, the sleeve to isolate said mounting portion from said nose plate and said fastener, with provided with a flange portion along the front and back surfaces of the mounting portion, the insertion hole An eaves wall mounting structure characterized in that it is divided into two at the position of the intermediate part of the tube part inserted into the tube part, and the contact surfaces of the two divided tube parts are fixed together with an adhesive .   2. The eaves ridge mounting structure according to claim 1, wherein the sleeve is formed of an alkali-resistant material or a plasticizer-resistant material.

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