JPH02210141A - Roof structure for building - Google Patents

Abstract

PURPOSE:To improve sound insulating and thermal insulating capacities of a roof by installing rafters in the height allowable to bending of a backing material over purlins at prescribed intervals, also installing the backing material between the adjoining rafters with its both edges laid thereon, and by placing a metal roof sheet over the surface of the backing material. CONSTITUTION:Rafters 30 are laid over purlins 10 at prescribed intervals and relatively thin backing materials 40 are installed between the adjoining rafters 30. Then a metal roof sheet 50 is laid over the backing material 40 with its middle part downwardly curved so that the backing material 40 is downwardly repressed thereby and the both are made stuck each other, not allowing a gap to exist in between. A thermal insulating underlaying material 20 is then laid over the purlin 10. Thereby capacities for thermal and sound insulation are greatly increased and properties and external appearance of the roof can be improved as well.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a roof structure for a building, and more specifically, to improving the performance such as sound insulation properties and the appearance of a roof of a building using metal roof plates. This relates to the roof structure that was designed.

[Prior Art] Conventionally, when roofing a building using metal roofing sheets, rafters are fixed at predetermined intervals on the roof structure of a building such as a main building, and hard material is inserted between the rafters. Both edges of a base material were erected, and metal roofing plates were laid on top of this base material.

Adjacent roof panels are generally connected by the means shown in Figure 8 (a). In other words, the predetermined width dimension (J)) is measured from above the side edge rising portions (la), (la) of the adjacent roof panels (1), (1), which are laid at a predetermined interval (Ω). Both layers of root plates (1) were connected by covering them with a long connecting plate (2).

[Problems to be Solved by the Invention] However, when a metal roofing board is laid using a base material made of a hard material as described above, the gap between the roof board and the base material may be damaged due to slight deformation of the roofing board. There were times when gaps appeared.

Also, as mentioned above (adjacent roof panels (1), cover the connecting panels (2) from above between the roof panels (1)).

When (1) is connected, as shown in Figure 8 (b), the force when attaching the connecting plate (2) is applied as a force that presses the side edge of the roof plate (ratio (1) downward). , the force acts on the center portion (1b) of the roof panel (1) in a direction that causes the roof panel (1) to curve upward.

Therefore, this may also cause a gap between the roof shingles and the base material, and also due to changes in the roof shingles due to thermal expansion of metal roof shingles, gaps between the roof shingles and the base material. may occur or increase.

When a gap occurs between the roof shingles and the base material, the roof shingles become irregularly curved, deteriorating the overall appearance of the roof and adversely affecting the overall appearance of the building. In addition, gaps caused the sound of rain to echo through the roof panels, creating a source of noise.

If the gaps between the two roof boards were to become excessively large, the watertightness of the connections would deteriorate, leading to leaks and other fatal defects in the building.

Therefore, the present invention eliminates the drawbacks of these conventional techniques, prevents the occurrence of gaps between metal roofing sheets and the base material, and creates a roof that has excellent appearance and sound insulation properties. The purpose is to provide a roof structure for buildings that can

[Means for Solving the Problems] In order to achieve the above object, the present invention includes a metal roof plate, a relatively thin base material, a structure that supports the base material, and extends the base material downward. The rafters are arranged at a predetermined interval on the main roof, and both edges of the base material are constructed between adjacent rafters, and on the top surface of the base material, The object of the present invention is to provide a roof structure for a building, characterized in that the metal roof plate is laid down in a proportion of 10%, and in particular, the main building comprises:
The present invention includes a roof structure for a building, which has a lower layer material such as a wood wool board on the upper surface thereof, and the rafters are fixedly installed at predetermined intervals on the upper surface of the lower layer material.

[Function] As mentioned above, a relatively thin base material is erected between the rafters having a predetermined height, and the metal roof plate laid on top of this base material is curved downward in the center. By laying it like this, the base material is pressed by the metal roof board and curves downward together with the metal roof board, so the metal roof board and the base material can be brought into close contact.

Furthermore, by placing a lower layer of heat-insulating material such as wood wool board on the top of the main building, it is possible to significantly improve heat-insulating and sound-insulating properties.

[Example] Hereinafter, the present invention will be roughly described in detail based on an example shown in the drawings.

First, Fig. 1 is a cross-sectional perspective view showing one embodiment of the building roof structure of the present invention, Fig. 2 is a cross-sectional front view thereof, Fig. 3 is a cross-sectional view showing an enlarged mounting part, and Fig. 4 is a roof structure. It is a front view of a roof board explaining the laying state of a board.

The roof structure of the present invention is a main building (10
) and an underlayer material such as wood wool board provided as necessary (2
0), a plurality of rafters (30), (30) fixed at predetermined intervals on its upper surface, and these rafters (30), (30
) A base material (40) that can be supported between.

(40) and metal roof panels (50), (50) and connection members (50) for connecting the roof panels (50), (50).
60) and a cover member (70).

The base material (40) is made of a relatively thin material, which is flexible enough to be curved, and rigid enough to be installed between the rafters (30), (30).
For example, plywood is used.

Roof plate (50) laid on top of this base material (40)
For example, copper, stainless steel.

This roof plate (50) is made of aluminum or other metal thin plates that have the necessary properties such as corrosion resistance and strength as roofing materials for buildings, and is processed into a predetermined shape.
Connecting parts (51), (51) used when laying the roof board (50) are bent on both side edges of the roof board.

That is, as shown in an enlarged view in FIG. 3, the jIf61 edge of the roof board (50) has a rising part (52) with both side edges bent diagonally upward, and a section from the tip of this rising part (52). The engaging portion (5) bulges inwardly toward the center of the roof plate (50).
3), and a contact portion (54) extending roughly upward and outward from the engaging portion (53) and folding the tip inward in an arc shape.
) are fully formed.

The rafters (30) that connect and support these base materials (40) and roof plates (50) have a shape called a so-called two-tiered rafter, and are attached to the upper surface (31) of a shape with a hat-shaped cross section. Steps (32) and (32) are formed to make the center part one step higher.

That is, on the upper surface of the rafter (30), step portions (32), (32) are formed in parallel and have heights approximately corresponding to the thickness of the base material (40), and the step portions (32) , (32)
A mounting surface (33) for a connecting member (60) for connecting the roof plate (50) is formed between the stepped portions (32), (32).
Base material support surfaces (34), (34) with sufficient radius to support the side edges of the base material (40) are formed on both sides of the base material.

In addition, the leg sides (35), (35) on both sides of the rafter (30) are bent approximately vertically downward from both sides of the base material support surfaces (34), (34), and the roof plates (to be described later) 50)
The base material (40) is formed to have a height sufficient to allow the center portion of the base material (40) to bend downward during installation.

Roughly at the lower ends of the leg sides (35), there is a mounting side (36) bent outward approximately parallel to the upper surface (31).

(36) is formed.

Next, the connecting member (60) attached to the upper surface of the rafter (30) is perpendicular to the base plate (61) that is fixed by contacting the mounting surface (33) and the center of the base plate (61). A rising side (62) that rises upright, and a top plate portion (8
3), and roof plate engaging sides (64), (64) protruding downward on both sides from the middle part of the upright side (62).

Furthermore, the cover member (70) provided so as to cover the connection parts (51), (51) between the connection member (60) and the roof plate (50) is made of an elastic material, A top plate part (71) that comes into contact with the top surface of the top plate part (63) of the connection member (80), and mounting side parts (72) bent downward from both sides of the top plate part (71), (72) The lower end of the mounting side (72) has the connecting member (
Engagement protrusions (73), (73) that bend inward and upward are formed corresponding to the roof plate engagement sides (64) of 60).

When roofing a building using the members formed in this way, first the lower layer material (20) and the rafters (30) are fixed to the upper part of the main building (10) by the usual method, and the rafters ( A connecting member (60) is attached to the upper surface (31) of the device (30).

Next, the side edge of the base material (40) is placed on the base material support surface (34) of the rafter (30) to attach the base material (30), and then the connections installed on the rafter (30) are Element(
60) and the engaging portion (53) of the roof sheet (50), and the abutting portion (54) of the roof sheet end on the connecting member (60). It is brought into contact with the lower surface of the top plate part (63). After the roof plate (50) is laid in this way, the cover member (70) is attached from above, and the engaging protrusion (73) is inserted through the engaging part (53) of the roof plate (50). to engage the roof plate engaging side (64).

It is possible to roof a building in this way, but in the present invention, the base material (40), the roof board (50),
In particular, the width of the roof plate (50) is slightly wider than the spacing between the rafters (30) or connecting members (60) to which they are attached.

That is, the roof plate (50) has connection parts (51) on both sides.

The width dimension between the retaining part (53) and (53) of (51) is
The spacing is wider than the interval between the roof plate engaging sides (64) of the connecting member (60) provided on the rafter (30).

However, when both side edges of the flexible base material (40) made of a relatively thin material are placed on the base material support surface (34) of the rafter (30), the base material (40) is made of a relatively thin material and has flexibility. ) due to its own weight or its side lines are rafters (30)
By being completely pressed by the stepped part (32), the rafter (
30) Attached between.

Roughly, on the upper surface of the base material (40) attached in this way, a roof plate (5
0), the engaging part (53) of the roof plate (50) is pressed by the roof plate engaging side (64) of the connecting member (60), and the connecting part (51) of the roof plate (50) is pushed upward. This reaction force is applied to the roof plate (50) by bending the connection part (51) toward the center of the connection member (60) by the ply plate engaging side (64) of the connection member (60). The central part of the roof board (50) is curved toward the main building (10) below, and the roof board (50) is curved as shown in FIG.

At this time, due to the curvature of the roof board (50), the base material (40
) is pushed downward and bends, curving downward together with the roof board (50). Therefore, the restoring force of the base material (40) and
Due to the pressing force of the roof and the plate (50), the two can be brought into close contact with each other, and a gap can be prevented from forming between the two.
It is possible to improve sound insulation and appearance.

In addition, as shown in this example, a lower layer material (20) such as a wood wool board is placed on the main building (10), and an air layer is formed between the lower layer material (20) and the base material (40). By doing so,
It is possible to significantly improve the insulation and sound insulation properties of the roof.

FIG. 5 shows another configuration of the connection part of the roof plate (50), in which a connection member (60) is provided on the rafter (30) by bolts (37), and two upright sides ( 62
), (62) and both standing sides (62)
, (62), respectively, the connection part of the roof board (50) (
The roof plate engaging side (64) that engages with the engaging portion (53) of
), (64) are provided protrudingly. In addition, the cover part (
70) has a top plate portion (
71) and a mounting side portion (72) are respectively formed.

6 and 7 show other examples of the shape of the rafter (30), and the rafter (30) shown in FIG. A bulging groove (38) is formed, and the rafter (30) shown in FIG.
4) is formed with a high step (32).

Note that these rafters and connecting members are used as appropriate depending on the shape of the connecting part of the roof plate, etc., and the present invention is not limited to these examples. This can be done by raising the roof, directly connecting roof plates without using a connecting member, or by using any other suitable shape and combination depending on the roof shape and roof area of the building.

[Effects of the Invention] As explained above, in the building roof structure of the present invention, rafters are arranged on the main roof at predetermined intervals, and both side edges of a relatively thin base material are constructed between adjacent rafters. At the same time, a metal roofing board is laid on the top surface of the base material so that its central part curves downward, so the roofing board presses the base material downward, causing both to curve downward, causing both of them to curve downward. is in close contact. Therefore, the occurrence of a gap between the two can be prevented, and the appearance and performance of the roof of the building can be improved.

Roughly speaking, by placing a lower layer material with heat insulating properties such as wood wool board on the top of the main building, the heat insulation and sound insulation properties can be greatly improved. The formation of this material can further improve thermal and sound insulation properties.

[Brief explanation of the drawing]

1 to 4 show embodiments of the roof structure of the present invention, in which FIG. 1 is a sectional perspective view, FIG. 2 is a sectional front view, and FIG. 31 is a sectional perspective view. I is an enlarged cross-sectional view of the main part, FIG. 4 is a front view of the roof shingle explaining the installation state of the roof shingle, FIG. 5 is a cross-sectional front view of the main part showing another example of the connection part, and FIG. 6 7 is a cross-sectional front view showing another example of the shape of the rafters, and FIG. 8 is an explanatory diagram of a conventional roof board connection state. (10)...Main building (30)...Rafters (32)...Steps (34)...Substrate support surface (36)...Mounting side (40)...Substrate (50) )... Roof plate (52)... Rising part (54)... Contact part (60)... Connection member (62)... Standing side (64)... Roof plate engaging side (61) ... Board part (51) ... Connection part (53) ... Engagement part (63) ... Top plate part (20) ... Lower layer material (31) ... Top surface ( 33)...Mounting surface (35)...Leg side (70)...Cover part (72)...Mounting side (71)...Top plate part (73)...Engagement Projection Figure 5

Claims (2)

[Claims] (1) Consists of a metal roof board, a relatively thin base material, and rafters that support the base material and have a height that allows the base material to deflect downward, and the rafters are attached to the main roof. A roof structure for a building, characterized in that both edges of the base material are placed at a predetermined interval between adjacent rafters, and the metal roof plate is laid on the top surface of the base material. . (2) The building roof structure according to claim 1, wherein the main building has a lower layer material such as a wood wool board on its upper surface, and the rafters are fixed at predetermined intervals on the upper surface of this lower layer material. A building roof structure characterized by: