JPS642022Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a joint structure for roofing materials.

Conventionally, when connecting plate-shaped roofing materials by arranging them in parallel, extremely high watertightness has been required to prevent rainwater from entering through the connection. Furthermore, since roofing materials repeatedly expand and contract due to temperature changes, a structure that can handle this thermal expansion and contraction is required. Also, during thermal expansion and contraction, the roofing material and its base material may rub against each other, causing unpleasant noise.

This idea was created in view of these conventional problems, and provides a joint structure for roofing materials that has extremely high watertightness, can cope with thermal changes in the roofing material, and is easy to install. The purpose is to

Next, the invention will be explained in detail based on the embodiment shown in the figures.

Reference numeral 1 denotes a roof base, in which a base layer 12 such as water-resistant veneer and a waterproof layer 13 such as asphalt felt are layered on a frame 11 made of concrete or the like. A strip-shaped base material 2 is fixed on the roof base part 1 vertically along the slope of the roof base part 1 with screws or the like. A plurality of base materials 2 are laid in parallel on the roof base part 1 with appropriate spacing. A screw threading groove 2 is provided in the center of the base material 2 over the entire length in the longitudinal direction.
1 is erected. A plurality of protrusions 22 are provided on both left and right sides of the screw threading groove 21, extending over the entire length in the longitudinal direction and spaced apart from each other by appropriate distances. This protrusion 2
Further than 2, upright pieces 23 are provided on both left and right sides, and their tips are bent in opposite directions.

Roofing material 3 is placed on base material 2 fixed as above.
is installed. The roofing material 3 is a strip-shaped plate portion 31
This is a member in which drainage groove portions 32 having a substantially U-shaped cross section are formed in parallel on both sides. In the drain groove section 32, a water return section 34 having an L-shaped cross section and bent toward the inside of the drain groove section 32 is formed over the entire length at the tip of a rising piece 33 at the side end. A concave portion 35 is formed by recessing the center of the side surface of the plate-like portion 31, which is the same as the groove open side of the drainage groove portion 32, over the entire length in the longitudinal direction. The purpose of the concave portion 35 is to guide rainwater flowing on the plate-like portion 31 downward, thereby preventing a large amount of rainwater from flowing into the drainage groove portion 32 and raising the water level in the groove. Drainage groove section 32
On the opposite side of the groove, a sound prevention material 36 such as a synthetic resin sheet is pasted over the entire length in the longitudinal direction. The roof material 3 has drain grooves 32, 32 on both sides placed on the protrusions 22, 22 so as to span between the adjacent base materials 2. A plurality of roofing materials 3 are arranged in parallel, and the roofing material 3 located on the left side of the base material 2 has its right drainage groove portion 32 placed on the left protrusion 22 of the base material 2, and The roofing material 3 located on the right side connects the drainage groove part 32 on the left side to the protrusion 2 on the right side of the base material 2.
It is placed on 2. Therefore, on the base material 2, the drain groove portions 32, 32 of the left and right adjacent roof materials 3, 3 are placed in parallel.

Drainage groove portions 32, 3 of these adjacent roofing materials 3, 3
A joint cover 4 is fixed to the base material 2 with screws 41 so as to span between the two. The joint cover 4 is also a band-shaped member, and has hanging pieces 42, 42 formed at both ends thereof over the entire length in the longitudinal direction. Watertight materials 43, 43 made of rubber or the like are attached to the lower surface of the joint cover 4 inside the hanging pieces 42, 42 over the entire length in the longitudinal direction. A groove 44 that opens upward is formed between the watertight materials 43 and 43 over the entire length in the longitudinal direction, and the screw 41 is passed through the lower surface of this groove 44 and screwed into the screw screw groove 21 of the base material 2. . At this time, watertight material 4 is attached to the rising pieces 33, 33 of the drain grooves 32, 32.
3 and 43 are in contact with each other. rising piece 33,
33 is only in contact with the watertight materials 43, 43,
Thermal expansion and contraction occur, and the rising pieces 33, 33 can freely move in the direction of the adjacent roofing materials 3, 3. A seat body 45 made of hard rubber or the like is interposed between the opposite surface of the groove 44 of the joint cover 4 and the screw threading groove 21. 2 on the seat body 45
A strip groove is formed and screwed into the screw threading groove 21 to position the joint cover, and the screw 41
The watertight material 43, 4 contracts due to the tightening force caused by the
3 and the rising pieces 33, 33 of the drainage groove parts 32, 32 are made more complete. Further, a sealing material 46 is interposed between the head of the screw 41 and the bottom of the groove 44. The groove 44 is covered with a joint material 47.

In the joint structure of the roofing material configured as described above, rainwater flows downward through the recessed portion of the plate-like portion 31 of the roofing material 3 and the groove of the drainage groove portion 32. The rainwater in the drain groove section 32 does not flow to the base material 2 side because the watertight material 43 of the joint cover 4 is in contact with the rising piece 33 and a water return section 34 is formed at the upper end of the rising piece 33. Does not infiltrate. Even if water intrudes into the base 2 side, the plurality of protrusions 22 abut against the lower surface of the drain groove portion 32 of the roofing material 3 to prevent water from infiltrating. Moreover, even if it goes beyond the lower surface side of the protrusion 22 and the drain groove part 32, it exits the space between the protrusions 22 and 22 through the gap, so it becomes almost impossible to cross the next protrusion 2 due to the labyrinth effect. Furthermore, rainwater that has exceeded the protrusions 22 is prevented from penetrating into the roof base portion 1 side by the rising pieces 23 of the base material 2.

Furthermore, even if the roofing material 3 expands or contracts due to temperature changes, since only the joint cover 4 is fixed with the screws 41, the roofing material 3 will be able to expand or contract freely in the width direction and longitudinal direction. It is possible. Therefore, the roofing material 3 and the joint portion will not be damaged. Further, a sound prevention material 36 is attached to the lower surface of the drainage groove portion 32 of the roofing material 3 and is in contact with the protrusion 22, thereby preventing the generation of squeaks due to thermal expansion and contraction.

This invention has the above-mentioned configuration, and the roofing material has a drainage groove portion, and the rising piece of the groove portion comes into contact with the watertight material of the joint cover, so that extremely high watertightness can be obtained.

A plurality of protrusions are provided on the base material, and the drainage groove part of the roofing material is placed on the protrusions, so that even if rainwater climbs over the rising piece of the groove part, further water is prevented from infiltrating.

Moreover, even if it crosses over a ridge, it comes out into the space between the next ridge, and due to the labyrinth effect, it is almost impossible to cross the next ridge, and water can be almost completely stopped.

In addition, only the joint cover is fixed and both sides of the roofing material are placed on the base material, making it possible to accommodate thermal expansion and contraction.

In addition, a sound-preventing material is attached to the lower surface of the drainage channel of the roofing material, which prevents unpleasant squeaking sounds even if it rubs against the ridges of the base material.

Furthermore, the installation work is extremely simple since only the joint cover is fixed with screws or the like.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a house in which this invention is implemented, and FIG. 2 is a sectional view taken along line A-A. 1... Roof base portion, 2... Base material, 3... Roofing material, 4... Joint cover, 22... Projection, 3
DESCRIPTION OF SYMBOLS 1... Plate-shaped part, 32... Drainage groove part, 33... Standing piece, 41... Screw, 43... Watertight material.

Claims (1)

[Claims for Utility Model Registration] Roofing materials 3, 3 having drain grooves 32 having a substantially U-shaped cross section on both sides are arranged in parallel, and the space between the roofing materials 3, 3 is
In connecting the roof materials 3, 3, a plurality of protrusions 22 are erected on the base material 2 fixed on the roof base portion 1, separated from each other by appropriate distances, over the entire length in the longitudinal direction. Drainage grooves 32, 32 are formed at both ends of the drain groove 32, and a sound prevention material 36 is pasted on the back side of the grooves 32, 32.
Both ends of the roofing materials 3, 3 are placed in parallel on the protrusion 22 of the base material 2, and a joint cover 4 has watertight materials 43, 43 on the lower surface for covering between both drainage grooves 32, 32. are fixed to the base materials 2, 2 in such a way that the watertight materials 43, 43 are in contact with the rising pieces 33, 33 at the side ends of the drainage groove portions 32, 32, and the rising pieces 33, 33 are connected to the adjacent roofing materials 3, A joint structure for roofing material that is movable in three directions.