JPH0443136B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a roof ridge expansion/contraction repair structure that can absorb expansion and contraction of roofing materials and prevent the occurrence of thermal stress and distortion.

[Conventional technology and its problems]

Recently, roofs have been developed in which roofing materials each having a rising portion at the end are connected by seam welding or the like. This 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. In particular, this roof has a joint part with a relatively large section modulus, so this expansion and contraction causes thermal stress strain on the bottom part of the roofing material, which causes disadvantages such as deformation of the board surface. It was hot. In addition, there were other drawbacks such as thermal stress and distortion, which adversely affected the watertightness and durability of the roof.

For this reason, a ridge structure has been developed in which the ridge side ends of both roofing materials are raised at the ridge position, overlapped, and seam welded to form an expansion joint at the ridge to absorb the expansion and contraction of the roofing materials. There is.

However, in this ridge structure, the ends of both roofing materials at the ridge position protrude toward each other before being formed. Therefore, it was not possible to install both roofing materials at the same time, which caused problems such as difficulty in construction.

[Means to solve the problem]

Therefore, the inventor worked diligently to solve the above problem.
As a result of repeated research, the present invention was developed by polymerizing the rising parts of the roofing material that formed the rising parts on the left and right ends,
Seam weld near the upper end to form a joint,
The ridge side of this joint part is folded back onto the bottom surface part, and the ridge side end is raised together with this folded part to form a ridge side end rising part, and this ridge side end rising part and the ridge side end rising part of other roofing materials Then, the ridge material with the ridge rising portion formed on both sides of the bottom is sandwiched, and the ridge side end rising portion of the roofing material and the ridge rising portion of the ridge material are overlapped and seam welded to form a double ridge joint, By creating a roof ridge extension/contraction repair structure in which the ridge joints are formed into an approximately inverted Y shape, it is possible to absorb the expansion/contraction of the roofing material of the tile stick roof, prevent the occurrence of thermal stress and distortion, and solve the above-mentioned problems. It is resolved.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on FIGS. 1 and 2. A is a roofing material, and is made of a metal plate material (for example, a stainless steel plate material) having a thickness that allows resistance welding such as spot welding and seam welding. This roofing material A has rising portions 2, 2 formed at the left and right ends of the bottom portion 1 in the width direction. This rising portion 2 is often not immediately raised at a right angle, but is first raised at an angle of less than 90 degrees, and then becomes perpendicular to the bottom portion 1. This rising part 2 is overlapped with the rising part 2 of another roof material A, and the vicinity of the upper end is seam welded, and the joint part
A ₁ is formed.

The ridge side of this joint part _A1 is folded back onto the bottom surface part 1, and together with this folded part, the ridge side ends of the roofing materials A, A, . . . are raised to form a ridge side end rising part 3. B is a ridge material, which is formed by appropriately bending a metal plate material. This ridge material B has the bottom 4
Both sides of the ridge are raised to form ridge rising portions 5, 5. (See Figure 3). A bent portion 4a may be formed on the bottom portion 4 of this ridge material B (see FIG. 4). The bent portion 4a has a bottom portion 4 having a mountain-shaped cross section, a convex portion or a concave portion formed in the middle of the bottom portion 4, or a bottom portion 4 having a valley-shaped cross section. If it is formed so that it is convex on the upper side, the accumulation of rainwater can be minimized. The length of the ridge material B in the width direction is formed to be sufficiently longer than the height of the ridge side end rising portion 3.

The ridge side end rising portion 3 and other roofing materials A, A,
The ridge material B is held between the ridge side end rising portion 3 of.... These ridge side end rising portions 3, 3 and both ridge rising portions 5, 5 are overlapped and seam welded near their upper ends to form ridge joints _A2 , _A2 . These ridge joints A ₂ , A ₂ are formed in an inverted Y shape, with the upper portions being closely connected and the lower portions being separated from each other (see Fig. 2).
That is, the ridge side end rising portions 3, 3 and the ridge rising portions 5, 5
are not formed to immediately stand up vertically (perpendicular to the absolute horizontal plane), but are formed by first standing up more slowly than the vertical, and then rising up to the vertical. At this time, only one of the ridge side end rising portion 3 and the ridge rising portion 5 is bent and raised in multiple stages as described above, and the other is immediately raised vertically to form a substantially inverted Y shape. Sometimes. Further, the lower end of the vertically raised portion may be formed in an arc shape, forming a substantially inverted Y shape.

In the figure, 6 indicates structural materials, and 7 indicates base materials such as roofing boards, insulation materials, and panels.

In the above explanation, the joint part _A1 of the roof is straight in the longitudinal direction, and is formed into a flat mountain shape as a whole including the ridge part, but the joint part _A1 is curved in the longitudinal direction. , the entire structure, including the ridge, may be arch-shaped.

〔Effect of the invention〕

In the present invention, the structure is such that the rising parts 2, 2 of the roofing materials A, A, _. The ridge side of this joint part A ₁ is folded back onto the bottom part 1, and the ridge side end is raised together with this folded part to form a ridge side end rising part 3, and this ridge side end rising part 3 and other Roofing material A, A,
...A ridge material B having ridge rising portions 5, 5 formed on both sides of the bottom portion 4 is sandwiched between the ridge side end rising portion, and the roofing material A,
The ridge side end rising parts 3, 3 of A, ... and the ridge rising parts 5, 5 of the ridge material B are overlapped and seam welded to form both ridge joints A ₂ , A _{2 .} , A ₂ are formed into a substantially inverted Y shape, the following effects are achieved.

That is, firstly, thermal expansion and contraction can be absorbed and the generation of stress and distortion can be prevented, secondly, rainwater can be prevented from entering from the ridge, and thirdly, the structure can be simplified.

To explain the above in detail, firstly, in the ridge expansion/contraction repair structure of the present invention, the roofing materials A, A, . . . may expand or contract in the longitudinal direction due to changes in outside temperature or the like. Due to this expansion and contraction, the double-ridge joints A ₂ , A ₂ formed near the ridge receive _a tensile or compressive force in the direction connecting the ridge and the underwater side (eaves).
A ₂ is formed in a roughly inverted Y shape, and the bent part at the bottom has a bendable structure, so the roofing materials A, A, ... expand and contract in the longitudinal direction due to changes in outside temperature, etc. Also, this thermal expansion and contraction can be absorbed, and it is possible to prevent stress and distortion from occurring in the roofing materials A, A, . . . . In this type of roof, joint parts _A1 , _A1 , . As mentioned above, by absorbing the expansion and contraction of the roofing materials A, A, etc., it is possible to prevent stress and distortion occurring in the bottom surface portion 1.

Second, in the ridge expansion/contraction repair structure of the present invention, both ridge joints A ₂ and A ₂ are formed by seam welding near their upper ends. Therefore, it is possible to reliably prevent rainwater from entering, and this part also has the effect of perfect watertightness, airtightness, etc.

Thirdly, the ridge expansion/contraction repair structure of the present invention has roofing materials A,
The ridge side ends of A... are raised to form ridge side end rising parts 3, 3, which are superimposed with both ridge rising parts 5, 5 of ridge material B, and these two ridge joints A ₂ , A ₂
It has an extremely simple structure formed into a substantially inverted Y shape. Furthermore, since the joint parts A ₁ , A ₁ are not directly superposed at the ridge ends, seam welding can be performed suitably without having to arrange the joint parts A ₁ , A ₁ , etc. in a staggered manner. That is,
During construction, variations in the arrangement of roofing materials A, A, etc. can be made freely. Therefore, there is an advantage that construction and processing can be performed relatively easily.

In particular, in this type of roof, one ridge side end rising part 3 does not get in the way, and both ridge side end rising parts 3 can be easily formed at the same time, so construction and processing can be performed easily. Furthermore, there is an advantage that the ridge side end rising portion 3 can be formed extremely easily and easily.

[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 FIG. 1, FIG. 3 is a perspective view of a ridge material, and FIG. FIG. A... Roofing material, B... Ridge material, A ₁ ... Joint part,
A ₂ ...ridge joint, 1...bottom part, 2...rising part,
3...ridge side end rising part, 4...bottom, 4a...bent part, 5...ridge rising part.

Claims (1)

[Scope of Claims] 1. The rising parts of the roofing material forming the rising parts on the left and right ends are overlapped with each other, and the vicinity of the upper end is seam welded to form a joint part, and the ridge side of this joint part is attached to the top of the bottom part. The ridge side edge is raised together with this folded point to form a ridge side edge rising part, and this ridge side edge rising part and the ridge side edge rising part of other roofing materials are used to create a ridge rising part on both sides of the bottom. The ridge materials formed with this are held together, and the rising part of the ridge side end of the roofing material and the rising part of the ridge material are overlapped and seam welded to form a joint between the two ridges. A roof ridge expansion/contraction structure characterized by being formed into a shape. 2. A roof ridge expansion/contraction repair structure as set forth in claim 1, characterized in that a bent portion is formed at the bottom of the ridge material.