JPH0240654Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is a method for expanding and contracting the underwater side of a tile-stick roof that can absorb the expansion and contraction of the roofing material of the tile-stick roof and prevent the occurrence of thermal stress and distortion. Regarding structure.

[Conventional technology and its problems]

BACKGROUND ART Recently, so-called tile-stick roofs have been developed in which roofing materials with stepped rising edges are connected by seam welding or the like. This tile stick roof has excellent watertightness and airtightness.

This type of roof is often manufactured by resistance welding, such as seam welding. For this reason, stainless steel, which is a material suitable for resistance welding, is often used.

However, since rustless steel has a very large coefficient of thermal expansion, the roofing material expands and contracts depending on the outside temperature, and this tendency is particularly noticeable when the roofing material is long.

As the roofing material expands and contracts, thermal stress and distortion occur in the roofing material. Especially for tiled roofs,
Because the tile bar part has a large section modulus,
Due to this expansion and contraction, thermal stress strain occurs at the bottom of the roofing material, which causes the board surface to deform. In addition, as a result of thermal stress and distortion, the watertightness and durability of the roof with tile rods are adversely affected.

[Means to solve the problem]

Therefore, in order to solve the above-mentioned drawbacks, the inventor conducted extensive research, and as a result, the present invention was developed by bending the bottom end of the bottom surface of the roofing material for a tile-stick roof downwards. The other side edge of the horizontal part of the eaves reinforcing material, which has a flat gutter-shaped part formed on one side edge of the horizontal part, is held between the bent parts, and a front hanging edge and a rear hanging edge are formed in front and behind the top. A tile rod in which the front hanging edge of the eaves gutter forming each side hanging part is present in the flat gutter-shaped part of the eaves reinforcement material, and the rear hanging part is fixed to the structural member at the lowest position below the water. By adopting an expansion/contraction repair structure on the underwater side of the thatched roof, it can respond well to the expansion and contraction of the roofing material.
This solves the above problem.

〔Example〕

An embodiment of the present invention will be explained based on FIGS. 1 to 3. A is a roofing material for a roof with tile sticks, and is made of a plate material (such as a stainless steel plate material) having a thickness that allows resistance welding such as spot welding and seam welding. This roofing material A has step-like rising portions formed on both side edges in the width direction. This rising portion is overlapped with the rising portion of the edge of another roof material A and seam welded to form a joint portion 1. A tile bar portion _A1 having a substantially trapezoidal chevron cross section is formed by the two rising portions at one joint portion.

Further, the bottom end 2 of the roofing material A is folded back downward to form a bent portion 2a.

B is a long eave reinforcement material, and like the roof material A, it is made of a plate material (such as a stainless steel plate material) having a thickness that allows resistance welding such as spot welding and seam welding. The eaves reinforcement material B is constructed by bending a plate material and forming a flat gutter-like part 4 on one side edge of a horizontal part 3 (on the right side in FIG. 2). The cross-sectional shape of the flat gutter-like portion 4 may be semicircular or the like, and is not limited to that of this embodiment. The other side of the horizontal portion 3 (the left side in FIG. 2) is inserted into a bent portion 2a formed in the roofing material A, and is held between the bent portions 2a.
At this time, they are often fixed by spot welding.

C is an eave-edge draining material, which is formed by bending a plate material. The eaves cutter C is configured such that a front hanging edge 6 and a rear hanging part 7 are formed on the front and rear edges of the top part 5, respectively. The front hanging edge 6 and the rear hanging portion 7 are formed by being bent substantially perpendicularly downward from the substantially horizontal top portion 5. In addition, the front hanging edge 6 and the rear hanging part 7 may be connected at a gently arched top 5. The lower edge of the rear hanging portion 7 is often formed to have an L-shaped cross section.

While the front hanging edge 6 exists within the flat gutter-shaped part 4 of the eaves reinforcement material B, the rear hanging part 7 is superimposed on the structural member 8 such as a purlin at the position closest to the water, and the fixing tool 9 It is fixed at. The rear hanging portion 7 is provided with a through hole for a fixing member 9, if necessary.

In the figure, 5a is a heater locking piece, 10 is a heat insulating material, a base material such as a board, 11 is a roof heater, 12 is a movable hanger, 12a is a movable hanger main body, 12b is a movable tongue piece, and 12c is a fixing tool.

[Effect of idea]

In the present invention, the structure is such that the bottom end of the bottom part 2 of the roofing material A of the tile stick roof is bent downward to form the bent part 2a, and one side edge of the horizontal part 3 is bent downward. The other side edge of the horizontal part 3 of the eaves reinforcement material B on which the flat gutter part 4 was formed is held between the bent parts 2a, and a front hanging edge 6 and a rear hanging part 7 are formed before and after the top part 5. While the front hanging edge 6 of each formed eave gutter C was made to exist within the flat gutter-shaped part 4 of the eave-edge reinforcing material B, the rear hanging part 7 was fixed to the structural member 8 at the position closest to the water. By doing so, the following effects are achieved. That is,
Firstly, it can absorb the expansion and contraction of roofing material A and prevent the occurrence of thermal stress and distortion, and secondly, it can strengthen the underwater part.
Thirdly, the durability of the underwater portion can be improved, and fourthly, water leakage can be prevented.

To explain the above in detail, first, in the underwater expansion/contraction repair structure of the present invention, when the roofing material A expands and contracts due to changes in outside temperature, etc., and the underwater edge moves back and forth (left and right in Fig. 2). There is. At this time, as the water lower end moves, the eaves reinforcement material B also moves back and forth. However, the eaves reinforcement material B can freely move with respect to the eaves drainage material C fixed to the structural member 8. Therefore, even if the roofing material A expands and contracts, the structure of the eaves reinforcement material B and the eaves drainage material C can absorb the expansion and contraction. Therefore, it is possible to prevent thermal stress and distortion from occurring in the roofing material A and the like.

In particular, the tile rod part _A1 in a tile rod roof is formed to be equivalent to a square timber with a large section modulus.
Thermal stress caused by the expansion and contraction occurs particularly on the bottom surface 2 of the roofing material A, which causes thermal distortion and deforms the board surface. This has the advantage of reliably preventing the occurrence of distortion.

Secondly, according to the configuration of the present invention, the presence of the eaves reinforcement material B increases the section modulus of the underwater side portion. This also has the effect of making the underwater side part extremely strong against wind pressure loads. Furthermore, since this eaves reinforcement material B is secured to the eave cutout material C fixed to the structural member 8 located at the position closest to the water, the water-side repaired portion of the present invention is attached to the structure attached to the structural member 8. It can be done almost in the same way as , and it can be configured robustly.

Thirdly, in the underwater expansion and contraction structure of the present invention,
Although there are parts that move in response to the expansion and contraction of the roofing material A, there are no parts that could cause fatigue of the material due to sliding or expansion and contraction. In other words, while absorbing expansion and contraction,
In addition, since there is no fatigue part, there is also the effect that the durability of the underwater part can be improved.

Fourthly, in the configuration of the present invention, the combination of the eaves reinforcement material B and the eaves cutout material C is such that the tip of the front hanging edge 6 of the eave cutout material C is located near the lower surface of the flat gutter-like part 4 of the eaveage reinforcement material B. The edge of the flat gutter-like portion 4 of the eaves reinforcement material B is present near the lower surface of the top portion 5 of the eaves cut material C. Therefore, since the gap is small, it is possible to prevent rainwater, etc. from entering, and even if rainwater, etc. should enter, capillary action can be prevented by the air space in the flat gutter-like portion 4. Therefore, it has the effect of being able to accommodate expansion and contraction while reliably preventing infiltration of rainwater and the like.

In addition, if the roof heater 11 is inserted between the bottom surface part 2 of the roofing material A and the eaves drainage material C, the snow melting effect will be produced on the underwater side. Conventionally, snow on roofs tends to melt from the water side (ridge side) due to indoor warm air. On the other hand, since the area below the water is exposed to the outside air, the snow remains as it is without melting, and the snow that is falling down from the side below the water is dammed up and the leakage phenomenon is prevented. This could result in water leaking into the room, or a large amount of snow would be present only below the water, leading to damage to the roofing material. Therefore, if the roof heater 11 is inserted, the snow melting effect will be exerted on the underwater side,
It prevents leakage and is extremely effective in improving the durability of the roof. At this time, if the heater locking piece 5a is formed by partially bending upward from the front end of the top 5 of the eave sill C, a simple structure can be achieved.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention,
Fig. 1 is a perspective view of the present invention, Fig. 2 is a sectional view of the main part of Fig. 1, Fig. 3 is a front view of Fig. 2, and Fig. 4 is a sectional view of the main part showing another embodiment. FIG. 5 is a perspective view showing the mounting structure of the tile rod portion. A... Roofing material, B... Eave reinforcement material, C... Eave draining material, 2... Bottom part, 2a... Bent part, 3...
Horizontal part, 4...Flat gutter-shaped part, 5...Top part, 6...
... Front hanging edge, 7... Back hanging part, 8... Structural material.

Claims (1)

[Scope of utility model registration request] Horizontal shape of eaves reinforcement material in which the bottom end of the roofing material for a tile stick roof is bent downward to form a bent part, and a flat gutter-like part is formed on one side edge of the horizontal part. The other side edge of the eaves gutter is held between the bent parts, and a front hanging edge and a rear hanging edge are formed at the front and back of the top. A structure for expanding and contracting the underwater side of a roof with tile sticks, characterized in that the hanging part on the rear side is fixed to the structural member at the position closest to the water side, while the hanging part is fixed to the structural member at the position closest to the water.