JP6940360B2 - Roofing material - Google Patents

Description

In the present invention, the lower goby and the upper goby provided on the widthwise edge of the roofing material are fitted to the upper goby and the lower goby of the roofing material arranged adjacent to each other, and the roofing materials are connected to each other to form a building structure. It relates to a roofing material suitable for roofing objects (general houses, offices, condominiums, welfare facilities, resort facilities, etc.).

Conventionally, as a roofing material used for roofing a building structure, a fitting having a lower goby on one of the widthwise edge of the roofing material and an upper goby on the other widthwise edge of the roofing material. A combination roofing material is used.

Most of such roofing materials have a main body portion divided by a pair of short side portions and a pair of long side portions, and have a long, flat, rectangular planar shape along the eaves or eaves-building direction. The lower goby is fitted to the upper goby of the adjacent roofing material (having the same configuration), while the upper goby is fitted to the lower goby of the other adjacent roofing material. This makes it possible to connect the roofing materials together, which realizes efficient roofing construction.

By the way, in this kind of roofing material, capillarity and smelt leak from the fitting part between the lower and upper swords (snow leak is a dam-like shape in which ice and snow accumulate on the eaves and rainwater and snowmelt water accumulate on the eaves. It is a state in which rainwater, snowmelt water, etc. easily infiltrate due to the state where the roof is partially submerged and the inside of the fitting part with the upper and lower goats is filled with rainwater and snowmelt water. doing.

As a prior art in this regard, Patent Document 1 describes a sealing material that is an elastic body that exhibits fluidity at the time of bonding and adhesiveness to other roof plate materials to be connected after bonding in the opening of the engaging female portion. A roof plate material equipped with (hot melt type sealing material) and a method for manufacturing the roof plate material have been proposed.

Further, in Patent Document 2, an elastic sealing member (sponge, rubber, urethane material, etc.) is attached along the longitudinal direction inside a fitting portion having a substantially triangular cross section provided at one end in the width direction of the face plate portion. , A roof plate and a roof thereof have been proposed in which the intrusion of rainwater is prevented by compressing and deforming this elastic sealing member with the bulging top piece of the hook-shaped bulging portion.

Further, in Patent Document 3, a groove-shaped space is provided between the upper and lower eaves, and the groove-shaped space prevents rainwater from entering due to the siphon phenomenon without using a sealing material and fits. A connection structure for roofing materials has been proposed in which even if rainwater invades the interior, it is discharged from the eaves.

Japanese Unexamined Patent Publication No. 2005-213810 Japanese Unexamined Patent Publication No. 9-256557 Japanese Unexamined Patent Publication No. 2017-25649

However, in the sealing structure proposed in Patent Documents 1 and 2, it is necessary to separately prepare a sealing material, and it is unavoidable to arrange the sealing member in addition to the usual procedure when constructing the roof. , There was a problem that the roof could not be constructed efficiently.

In particular, in the seal structure proposed in Patent Document 2, when the elastic seal material which is a water stop material is installed at a predetermined position, the water stop material may be displaced or twisted due to the influence of molding error or the like. Therefore, there was a concern that the roofing materials would not fit together normally if they were constructed as they were, and that the wind pressure resistance and waterproof performance, which are important for the roofing materials, would be significantly reduced.

Regarding the roofing material on which the sealing member is placed, an attempt has been made to attach the sealing member to the roofing material in advance at the time of manufacturing the roofing material, but in this case, a separate mounting process of the sealing member is required. It is difficult to say that efficient manufacturing can be performed, and an increase in manufacturing cost is inevitable.

The waterproof structure disclosed in Patent Document 3 has a high effect of preventing leakage, but in winter when the outside air temperature is much lower than the freezing point, the water that has entered the goby is discharged from the opening of the eaves. If the goby freezes and the opening is closed, the water in the goby may not be discharged and may infiltrate indoors.

An object of the present invention is to prevent capillarity at the fitting portion, which is a concern when fitting the upper goby and the lower goby to connect the roofing materials, or the infiltration of rainwater, snowmelt water, etc. due to leakage. We are in the process of proposing a roofing material that can be reliably prevented without requiring complicated work or going through a laborious manufacturing process.

In the present invention, a plurality of roofing materials having a lower goby at one end in the width direction of the main body portion and an upper goby at the other end in the width direction of the main body portion are arranged along the eaves direction and the eaves-building direction. At the same time, the lower goby and upper goby of each roofing material are fitted to the upper goby and lower goby of the adjacent roofing materials, respectively, and the roofing materials are connected to each other to construct a roof. The main body portion has a backing material that extends from the end of the lower goby toward the upper goby and covers the back surface of the main body portion.
The backing material is a roofing material characterized in that it covers at least a part of the upper goby and has an extension portion sandwiched between the lower goby and the adjacent roofing material.

In the roofing material having the above structure, the lower goby has at least one groove that is opened upward and continuously extends along the longitudinal direction of the main body portion on the top plate forming the crown. It is preferable to have it, and the backing material is preferably composed of an olefin resin.

According to the roofing material of the present invention, the backing material originally mainly used for preventing dew condensation on the roof is provided with an extension portion that covers at least a part of the upper capillaries, and when the roofing materials are joined, the extension portion is provided. Since it is sandwiched between the lower haze of the adjacent roofing material, this part can function as a sealing material, and it becomes possible to function as a sealing material. Etc. can be reliably prevented from entering.

Further, according to the roofing material of the present invention, the top plate forming the crown of the lower haze is provided with at least one groove that is opened upward and continuously extends along the longitudinal direction of the main body portion. Therefore, even if rainwater or snowmelt water enters the fitting portion, it can flow down toward the eaves and be discharged to the outside, and an isobaric space is formed by the groove portion, so that the fitting portion is fitted. Even if a pressure (wind pressure) that blows rainwater into the part acts, the pressure can be released to the outside (reduction of pressure), and the water blocking effect of the extended portion of the backing material is further enhanced.

By making the extension portion of the backing material function as a sealing material, the work of arranging the sealing member becomes unnecessary and the roof can be efficiently constructed. Further, in the manufacturing process of the roofing material, it is sufficient to extend the area where the backing material is provided, so that no extra process is added and the roofing material can be efficiently manufactured.

It is an external perspective view which shows typically the roofing material suitable for this invention. It is a figure which showed the front of the roofing material shown in FIG. 1 enlarged. It is a figure which showed the plane of the roofing material shown in FIG. It is a figure which showed the bottom surface of the roofing material shown in FIG. It is a figure which showed the part of the roof constructed by using the roofing material shown in FIGS. 1 to 4 about the front surface. It is the figure which showed the connection state of the roofing material about the main part. It is a figure which showed the example about the main part of the roofing material according to this invention. It is a figure which showed the main part about another example of the roofing material according to this invention. It is a figure which showed the infiltration route of rainwater. It is a figure which shows the front surface schematically another example of the roofing material according to this invention.

Hereinafter, the present invention will be described in more detail with reference to the drawings.
FIG. 1 is an external perspective view schematically showing a roofing material suitable for the present invention, FIG. 2 is an enlarged view of a front view of the roofing material shown in FIG. 1, and FIG. 3 is an enlarged view. , FIG. 1 is a plan view of the roofing material shown in FIG. 1, and FIG. 4 is a bottom view of the roofing material shown in FIG.

In the roofing materials shown in FIGS. As an example, a folded plate roofing material suitable for constructing a roof as shown in FIG. 5 in which peaks and valleys are alternately arranged by fixing and holding the roof is shown. The present invention can be applied to all fitting type roofing materials in which the upper goby is fitted to the lower goby and the roofing materials are joined to each other, and the present invention is not limited to the folded plate roofing material.

Reference numeral 1 in FIGS. 1 to 4 is a roofing material. The roofing material 1 is connected to a pair of short side portions 1a and 1b extending along the eaves direction and a pair of long side portions 1c and 1d connected to the short side portions 1a and 1b and extending along the eaves-building direction. It has a main body part (groove plate) having a flat and rectangular flat shape divided by.

Although not shown, the main body of the roofing material 1 is composed of a pair of long sides extending along the eaves direction and a pair of short sides connected to the long sides and extending along the eaves-ridge direction. It is also possible to apply one having a divided flat or rectangular plane shape, and the plane shape of the roofing material is not limited to the one shown in the figure. The length can also be changed as appropriate.

Specifically, as the roofing material 1, a galvanized steel plate having a thickness of about 0.6 to 1.0 mm, an aluminum zinc alloy plated steel plate, an aluminum plate, a stainless steel plate, a copper plate, or the like can be used. In the present invention, the "adjacently arranged roofing material" means a roofing material having the same configuration as the roofing material according to the present invention, but in the following description, the "adjacently arranged roofing material" is referred to. , The code is indicated by adding (').

Further, reference numerals 2a and 2b in the figure indicate that the lower end portion is connected to the long side portions 1c and 1d of the main body portion, respectively, and the inclined side wall 3 rising diagonally upward from that portion is in a cantilever state at the upper end of the inclined side wall 2a. It is a lower goby connected by. The lower goby 3 has the same length as the long side portion 1c, and is between the top plate 3a forming the crown portion, one end in the width direction of the top plate 3a, and the upper end portion of the inclined side wall 2a. A hanging piece 3c (coupling claw of the tight frame T) that is hung and held by the overhanging jaw portion 3b that is integrally connected and the other end of the top plate 3a in the width direction and can come into contact with the outer surface of the coordinating claw portion t1 of the tight frame T. It has an inclination along the outer surface of the portion t1).

At least one groove 3a1 which is opened upward and continuously extends along the longitudinal direction of the main body portion is formed in the central portion of the top plate 3a in the width direction. The groove portion 3a1 forms a spatial region penetrating in the flow direction (tilt direction) of the roofing material, and is formed in a fitting portion between the lower haze 3 and the upper haze (4') of the roofing material arranged adjacent to the lower haze 3. Even if rainwater may infiltrate due to capillarity or leakage, not only can it flow down toward the eaves and be discharged to the outside, but it will also be an isobaric space equal to the pressure of the outside air. Even if a pressure (wind pressure) that blows rainwater acts between the roof and the upper roof (4'), the pressure can be released to the outside (pressure reduction) (wind pressure in the fitting part). The effect of can be reduced).

Further, reference numeral 4 denotes an upper goby having the same length as the long side portion 1d and connected in a cantilever state at the upper end of the inclined side wall 2b. The upper goby 4 is shown here as an example having a dome shape, and the top plate (3a'), the overhanging jaw (3b'), and the hanging of the lower goby (3') of the roofing material arranged adjacent to each other. A head 4a having an internal space for inserting a piece (3c'), a protruding jaw portion (3b') of a lower goby (3') and a linked claw portion t1 (tight frame T) connected to the lower end of the head 4a. It is composed of inwardly convex portions 4b and 4c that can be engaged with (see FIG. 5). At the lower end of the convex portion 4b of the upper goby 4, a hanging wall 4d capable of contacting the outer surface of the inclined side wall (2b') of the roofing material (1') arranged adjacently is provided.

An opening connected to the internal space of the head 4a is formed between the convex portions 4b and 4c of the upper goby 4, and the lower goby (3') of the roofing material (1') adjacently arranged through this opening. By inserting the top plate (3a') into the internal space, the upper goby 4 and the lower goby (3') of the roofing material (1') arranged adjacent to the upper goby are fitted, and the lower goby 3 is arranged adjacent to each other. By entering the internal space of the upper goby (4') of the roofing material (1'), the two will fit together.

The fitting of the upper goby 4 and the lower goby (3') and the fitting of the lower goby 3 and the upper goby (4') are performed at the linking claw portion t1 of the tight frame T, and the upper goby 4 and the upper goby 4 are fitted together. When the lower goby (3'), the lower goby 3 and the upper goby (4') are put into a mated state, the convex portions 4b and 4c of the upper goby 4 and the overhanging jaw portion 3b of the lower goby 3 are tight frames T. The roofing material 1 is fixed and held to the tight frame T by being caught by the linking claw portion t1 of the above. Connecting bolts can also be used to firmly fix the roofing material 1 with the tight frame T.

According to the present invention, the lower goby 3 and the upper goby 4 of the roofing material 1 are both formed together with the main body portion by subjecting the plate material to be the roofing material 1 to bending (bending by roll, pressing, etc.). The shape thereof can be changed as appropriate and is not limited to the cross-sectional shape as shown in the drawing.

Reference numeral 5 denotes a backing material extending from the end of the lower goby 3 toward the upper goby 4. The backing material 5 has an extension portion 5a that covers at least a part of the upper goby 4. As shown in FIGS. 5 and 6, the extension portion 5a is sandwiched between the lower goby (3') of the roofing materials (1') arranged adjacent to each other when connecting the roofing materials to each other. Therefore, it is possible to prevent rainwater, snowmelt water, etc. from entering the fitting portion.

As the backing material 5, an olefin resin having a thickness of about 0.2 to 1.6 mm, including an extension portion 5a, and a maximum thickness of about 4.0 mm, for example, a foamed polyethylene resin may be used. can. According to the backing material 5, not only can dew condensation be prevented on the back surface of the roofing material 1, but also the extension portion 5a has a sufficient function as a sealing material.

When the extension portion 5a is provided on the backing material 5, the entire area in the width direction of the upper goby 4 can be provided, but a higher sealing can be realized while reducing the amount of the backing material 5 used as much as possible. , As shown in FIG. 7, it extends to just below the top plate 4a1 of the head 4a of the upper goby 4, or as shown in FIG. 8, the lower goby (3') of the roofing material (1') arranged adjacently. ) To the immediate vicinity of the groove (3a1') . The extension portion 5a as shown in FIGS. 6 and 7 has a particularly high water stopping effect.

Normally, for metal roofing materials, it is common to provide a backing material 5 mainly from the viewpoint of preventing the occurrence of dew condensation, etc., and in particular, the folded plate roofing material as shown in FIG. 1 above is provided with a backing material 5. It is provided at the end of the lower goby 3, that is, from the widthwise edge of the lower goby 3 to the upper goby 4 in the region corresponding to the end of the lower goby 3'of the adjacent roofing material (1'). Only. However, in the present invention, the backing material 5 is provided with an extension portion 5a that covers at least a part of the upper goby 4, and the extension portion 5a is sandwiched by the lower goby (3') of the roofing material that is adjacently arranged. Therefore, it is possible to prevent the ingress of rainwater and snowmelt water without separately providing a sealing material, and the roof can be constructed efficiently. Further, in the production of the roofing material, since it is only necessary to provide the extension portion 5a on the backing material 5, there is an advantage that no extra process is added in the production of the roofing material.

FIG. 9 is a diagram showing an infiltration route of rainwater. In particular, in the roofing material in which the groove portion 3a1 is provided on the top plate 3a of the lower haze 3, the pressure (wind pressure) for blowing rainwater acts at the fitting portion, and the rainwater infiltrates along the path shown in FIG. However, the pressure can be effectively reduced, and the water-stopping effect of the extension portion 5a of the backing material 5 can be further enhanced.

As for the groove 3a1, an inverted trapezoidal shape provided at the center of the top plate 3a of the lower goby 3 in the width direction is shown as an example. For example, the groove 3a1 having a cross-sectional shape as shown in FIG. 10 is applied. The cross-sectional shape of the groove 3a1 is not limited.

According to the present invention, a sealing material is used to prevent the infiltration of rainwater and snowmelt water due to capillarity and leakage at the fitting portion, which has been a concern when the upper and lower roofs are fitted and the roofing materials are joined to each other. It is possible to provide a roofing material that can be reliably prevented without complicated work such as installation.

1, 1'Roofing material 1a, 1b Short side 1c, 1d Long side 2a, 2b, 2a', 2b'Inclined side wall 3, 3'Lower haze 3a, 3a' Top plate 3a1, 3a1' Groove 3b, 3b' Overhanging jaw 3c, 3c'hanging piece 4, 4'upper haze 4a, 4a' head 4b, 4c, 4b', 4c' convex part 5, 5'backing material 5a, 5a'extension part T tight frame t1 linkage Claw

Claims (2)

A plurality of roofing materials having a lower goby at one end in the width direction of the main body portion and an upper goby at the other end in the width direction of the main body portion are arranged along the eaves direction and the eaves-building direction, and each of them is arranged. It is a roofing material that builds a roof by fitting the lower goby and upper goby of the roofing material to the upper goby and lower goby of the adjacent roofing materials and connecting the roofing materials to each other.
The lower goby has at least one groove that is opened upward and continuously extends along the longitudinal direction of the main body portion on the top plate forming the crown.
The main body portion has a backing material that extends from the end of the lower goby toward the upper goby and covers the back surface of the main body portion.
The backing material extends to just below the inner end in the width direction of the top plate of the head of the upper goby, or to the immediate vicinity of the outer end in the width direction of the groove of the lower goby of the roofing material arranged adjacent to the backing material. A roofing material characterized in that it covers the inner wall surface of the head of the upper goby and has an extension portion sandwiched between the lower goby and the adjacent roofing material. The roofing material according to claim 1 , wherein the backing material is made of an olefin resin.

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