JP5705554B2 - Roof panel and manufacturing method thereof - Google Patents

Description

  The present invention relates to a roof panel attached to an upper part of a building such as a unit building and a manufacturing method thereof.

Conventionally, a roof panel member including a rafter receiving beam, a rafter, a field board, and the like on an upper part of a building unit is known (see, for example, Patent Document 1).
In the conventional roof panel described in Patent Document 1, roof panel support brackets having different heights are attached to rafter beams provided at both ends in the direction along the drainage gradient in the roof panel, and both ends of the rafters are attached. Are supported by these roof panel brackets having different heights, so that the rafters are inclined with respect to the horizontal. And the base plate is supported by this inclined rafter, and the drainage gradient is given to the roof panel surface.

  In addition, as a conventional technique described in Patent Document 1, two types of rafter receiving beams having different heights are used as rafter receiving beams, and the rafters are supported by being inclined by the rafter receiving beams having these heights. It also describes providing a drainage gradient on the panel surface.

JP 2002-322756 A

  However, in the conventional roof panel as described above, when supporting the rafter by tilting it, a roof panel receiving bracket having a different height is interposed between the rafter receiving beam and the rafter, Since rafter receiving beams having different heights are used as beams, there are problems in that the number of parts used is large and the number of parts used is increased, resulting in an increase in cost.

  The object of the present invention is to solve the above-described problems, and to provide a roof panel capable of reducing the number of parts and types of parts to be used, and a method for manufacturing the same.

In order to achieve the above object, the invention according to claim 1 is a pair of rafter beams arranged in parallel at the positions of two opposite sides of a square roof panel in a plan view, and A roof panel comprising a plurality of rafters bridged in a direction perpendicular to both rafters and a panel material that is supported by these rafters and forms a roof surface that is inclined along a drainage gradient, The rafter has both longitudinal ends fixed directly to the rafter receiving beam, and the portion arranged on the water upper side of the drainage gradient is more to the rafter receiving beam than the portion arranged below the water. The panel material is inclined along the drainage gradient due to the height difference formed by the rafters fixed at a high position, and the rafters are screws inserted into the rafter screw holes provided in the rafter receiving beams. Fastened to the rafter receiving beam, The number of screw holes for the rafter is larger than the number of screws that are inserted when the rafter is fixed, and the rafters for the rafter receiving beam are selected by selecting the rafter screw holes through which the screws are inserted. The roof panel is characterized by a fixed height .
In order to achieve the above object, the invention according to claim 2 includes a pair of rafter beams arranged in parallel at the positions of two opposite sides of a square roof panel in plan view, and the rafter receivers. A roof panel comprising a plurality of rafters bridged between the beams in a direction perpendicular to both rafters and a panel member supported by these rafters and forming a roof surface inclined along a drainage gradient. The rafter has both ends in the longitudinal direction directly fixed to the rafter receiving beam, and the rafter receiving beam is located at the location on the water upper side of the drainage gradient rather than the location on the underwater side. The panel material is inclined along a drainage gradient due to the height difference formed between the rafters, which are fixed at a high position, and the rafters are inserted through the rafter screw holes provided in the rafter receiving beam. Tighten the screw to the screw receiving hole formed in the rafter. The screw receiving hole is fixed to the rafter receiving beam, and the screw receiving hole is provided in a vertical direction with a number larger than the number of screws to be fastened at the time of fixing, and by selecting the position of the screw receiving hole for fastening the screw The roof panel is characterized in that a fixed height of the rafter relative to the rafter receiving beam is set.

According to a third aspect of the present invention, in the roof panel according to the first or second aspect , each of the pair of rafter receiving beams includes a bottom piece extending in a horizontal direction and one horizontal end of the bottom piece. And the bottom piece is arranged symmetrically in the direction between the rafters, and the bottom surface of the rafter has a bottom piece. The roof panel is characterized in that both ends of the roof panel are fixed to the upright support piece in a state of being opposed to the upper surface.
According to a fourth aspect of the present invention, in the roof panel according to any one of the first to third aspects, the drainage gradient is set in a direction orthogonal to the rafter receiving beam, and each rafter is arranged at both ends thereof. One end is fixed at a relatively high position on the water side, and the other end is fixed at a relatively low position on the water side, so that each rafter is inclined along the drainage gradient. The roof panel is characterized by being made.
In invention of Claim 5, in the roof panel of any one of Claims 1-3 , the said drainage gradient is set to the direction along the said rafter receiving beam, and each rafter is each both ends. The portion is fixed at the same height with respect to the rafter receiving beam and is disposed horizontally, and the plurality of rafters are disposed on the water upper side than those disposed on the water side along the drainage gradient. The roof panel is characterized in that the roof is fixed at a relatively high position.
In invention of Claim 6 , in the roof panel of any one of Claims 1-5 , the rafter is made of steel, and end plates facing the rafter receiving beam are provided at both ends. The roof panel is characterized in that the end plate is provided with a screw receiving hole for fastening the screw .
In the invention described in 請 Motomeko 7, in the roof panel according to any one of claims 1 to 6, wherein the rafter receiving beam is a bolt for fixing the carrying bracket used to secure during transportation The roof panel is characterized in that a plurality of bolt insertion holes for fastening are formed at predetermined intervals along the longitudinal direction.

Invention of Claim 8 is a manufacturing method of the roof panel of any one of Claims 1-7, Comprising: The said screw hole for rafters is opened previously in the said rafter receiving beam, The said rafter is The end plate is fixed in advance, and a screw receiving hole is provided in the end plate in advance, and when the roof panel is assembled, a screw is inserted into the rafter screw hole of the rafter receiving beam. The method of manufacturing a roof panel is characterized in that the rafter is fixed by being fastened to a screw receiving hole of the rafter.
The invention according to claim 9 is a pair of rafter receiving beams arranged in parallel at the positions of two opposing sides of a rectangular roof panel in plan view, and a direction perpendicular to both rafter receiving beams between these rafter receiving beams A roof panel comprising a plurality of rafters spanned over and a panel member that is supported by these rafters and forms a roof surface that is inclined along a drainage gradient, wherein the rafters have longitudinal end portions. The rafters are fixed directly to the rafter receiving beam, and the rafters are fixed at a higher position with respect to the rafter receiving beam than at the portion arranged below the drainage slope in the place arranged on the water upper side of the drainage gradient. The panel material is inclined along a drainage gradient due to the height difference formed by the above, and the pair of rafter receiving beams are respectively raised from a bottom piece extending in the horizontal direction and one horizontal end of the bottom piece. L-shaped cross section with vertical support piece The bottom piece is arranged symmetrically with respect to the direction between the two rafters. The bottom of the rafter is opposed to the top surface of the bottom piece, and both ends thereof are The roof panel is characterized by being fixed to the upper support piece.

In the present invention, both ends of the rafter in the longitudinal direction are directly fixed to a pair of rafters, and the fixed height of both ends of the rafter is the fixed height on the upper side of the drainage gradient, and the fixed height on the lower side of the drainage gradient. It was higher than that.
Therefore, the number of parts can be reduced as compared with the case where parts are interposed between the rafter receiving beam and the rafter in the height direction, and the shape of the rafter receiving beam is also a shape corresponding to the drainage gradient. This is unnecessary and is advantageous in terms of cost.
According to the first aspect of the present invention, in each rafter receiving beam, rafter screw holes provided at locations where both ends of the rafter are fixed are formed in a number larger than the number of screws inserted when fixed in the vertical direction. did. As a result, according to the fixed height of both ends of the rafter, the position where the fixing screw is inserted into the rafter screw hole is set higher than the low position at the fixed height, and the both ends of the rafter are fixed. The height can be varied.
Therefore, it is easy to set the fixed height at both ends of the rafter, and the workability is excellent. Further, in the rafter receiving beam, it is not necessary to open the rafter screw holes one by one at positions corresponding to the fixed heights at both ends of the rafter, which is excellent in workability.
In the invention according to claim 2, the screw receiving holes formed in the rafter are formed in a number larger than the number of screws to be fastened when fixed in the vertical direction. As a result, according to the fixed height of both ends of the rafter, the fastening position to the screw receiving hole of the fixing screw is set higher than the low position at the position where the fixed height is high. Can be different.
Therefore, it is easy to set the fixed height at both ends of the rafter, and the workability is excellent. Further, in the rafter, it is not necessary to perform the operation of opening the screw receiving holes at positions corresponding to the fixed heights at both ends of the rafter, which is excellent in workability.
Further, as in the inventions according to claim 3 and claim 9, by using symmetrically arranged ones of the same shape as both rafter receiving beams, different rafter receiving beams are used. Compared to the above, the number of parts can be reduced and the manufacturing cost can be reduced.
Furthermore, in the invention according to claim 3 and claim 9 , each rafter receiving beam is formed in an L-shaped cross-sectional shape, and the bottom piece and the lower surface of the rafter are arranged to face each other. It is easy to maintain a rafter at a predetermined height by arranging a spacer or the like between the rafter and the bottom piece, and the workability is excellent.

In the invention according to claim 4 , in each rafter, the fixed height with respect to the rafter receiving beam at both ends is made different, and the rafter is inclined so that the drainage gradient in the direction perpendicular to the rafter receiving beam is provided on the panel material supported by the rafter. Can be given.
In the invention according to claim 5 , each rafter is supported horizontally by the rafters by making the fixed heights at both ends coincide with each other and arranging the rafters horizontally along the drainage gradient. The panel material can be given a drainage gradient in the direction along the rafter receiving beam.
As described above, in the present invention, the drainage gradient can be arbitrarily set in the direction along the rafter receiving beam or in the direction perpendicular to the rafter receiving beam by arbitrarily setting the fixed height of both ends of each rafter.
In the invention described in claim 6 , an end plate is provided in a rafter made of steel, and a screw receiving hole for screw fastening is provided in the end plate.
Therefore, by tightening the screw inserted into the rafter receiving beam into the screw receiving hole, the steel rafter can be fixed to the rafter receiving beam, and compared with fastening the screw directly to the wooden rafter. work is easy, and, even in steel made rafters, Ru excellent workability can easily conclude the screw at its end.

In the invention according to claim 7 , since the bolt holes for fixing the transportation bracket are provided at regular intervals in each rafter receiving beam, the dimension adjustment of the roof panel and each rafter receiving beam is performed according to the dimensions of the building to be installed. Even if it performs, it is not necessary to make a hole for fixing the carrying bracket each time, and the workability is excellent.

In the invention according to claim 8 , since the drainage gradient can be changed by the position of the rafter screw hole or the screw receiving hole of the rafter receiving beam, a common beam can be used as a pair of rafter receiving beams and the number of parts is reduced. it can. In addition, if the screws are fastened with the positions of the rafter screw receiving holes and rafter receiving beam rafter screw holes aligned, both ends of the rafters can be fixed at the predetermined height of the rafter receiving beam, respectively. Excellent.

1A and 1B are diagrams showing a roof panel YP according to Embodiment 1 of the present invention, where FIG. 1A is a plan view, and FIG. 1B is a cross-sectional view taken along the line Sb-Sb in FIG. is there. FIG. 2 is a perspective view showing a state in which the roof panel YP of the first embodiment is installed in the building unit TU. FIG. 3 is a side view showing the rafter receiving beam 21 (22) of the roof panel YP of the first embodiment. FIG. 4 is a cross-sectional view showing a state in which the roof panel YP of the first embodiment is installed in the building unit TU. FIG. 5 is a perspective view showing the rafter 23 used for the roof panel YP of the first embodiment. 6A and 6B are views showing the roof panel YP of the second embodiment, where FIG. 6A is a plan view, FIG. 6B is a side view of the rafter receiving beam 221, and FIG. 6C is a Sc-Sc line in FIG. It is sectional drawing which shows the state cut | disconnected. FIG. 7 is a diagram illustrating a main part of another example of the roof panel according to the embodiment, and is a cross-sectional view illustrating a state in which the rafter 323 is attached to the rafter receiving beams 21 and 22.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
First, the roof panel according to the first embodiment of the present invention will be described with reference to FIGS.
FIG. 2 is a perspective view showing a process of installing the roof panel YP of the first embodiment in the building unit TU.
As shown in FIG. 2, the roof panel YP is installed on the upper part of the building unit TU.

Here, the building unit TU will be briefly described.
The building unit TU includes a frame structure 10 in which pillars 11 formed of metal frames are erected at four corners, and upper and lower parts of the pillars 11 are joined in a frame shape by beams 12. In the frame structure 10, a plurality of ceiling joists 13 are bridged between the long beams 12 and the beams 12 in a direction orthogonal to the extending direction of the beams 12.

  In the building unit TU, the roof panel YP is placed on the horizontal upper end faces 11a and 12a of the pillar 11 and the beam 12, and the bolt 42 erected on the beam 12 is used for the rafter receiving beam 21 described later of the roof panel YP. , 22, and nuts 43 are fastened and fixed to the bolts 42 (see FIG. 4).

The roof panel YP is assembled in advance at the factory and fixed to the building unit TU at the construction site.
The roof panel YP includes a pair of rafter receivers 21 and 22, a plurality of rafters 23, and a field plate roof panel (panel material) NP.

  This roof panel YP is a ridge when the depth span (length) of a unit building (not shown) composed of a plurality of building units TU is equal to or less than the transport limit length (for example, 10 m). On the other hand, when the depth span of the unit building exceeds the transport limit length, it is divided into a plurality of parts and combined at the upper part of the unit building. In the first embodiment, a case where one roof panel YP is attached to the upper part of one building unit TU is illustrated.

  The rafter receiving beams 21 and 22 are made of metal and, as shown in FIG. 1, are each formed in a substantially L-shaped cross section by a bottom piece 21b and an upright support piece 21a erected from one end thereof. Further, as shown in FIG. 3, rafter screw holes 25 and bolt holes 26 are formed in the upright support piece 21 a. The rafter receiving beams 21 and 22 have different signs for the explanation of the drainage gradient described later, but the same members are arranged symmetrically.

  The rafter screw holes 25 are provided at a plurality of locations at predetermined intervals in the longitudinal direction in the rafter receiving beams 21 and 22. The installation positions of the rafter screw holes 25 correspond to the installation positions of the rafters 23. For example, the rafter screw holes 25 are provided at intervals according to modules set in advance to constitute a unit building. Furthermore, as shown in the drawing in an enlarged manner, the rafter screw holes 25 are provided in one place at a fixed interval in the vertical direction (four in the first embodiment).

  A plurality of bolt holes 26 are also provided along the longitudinal direction of the rafter receiving beam 21 at regular intervals according to the module serving as a reference for the building unit TU. The installation interval of the bolt holes 26 and the installation interval of the rafter screw holes 25 may be matched according to a predetermined module as described above, but may be different regardless of the module.

As shown in FIG. 1B, the rafter 23 has both longitudinal ends thereof in contact with or close to the upright support piece 21a of the rafter receiving beam 21, and both longitudinal ends thereof are rafter screws. The rafter receiving beam 21 is fastened by a screw 27 penetrating the hole 25.
As the rafter 23, either a wooden or a metal may be used, but in the first embodiment, a metal is used. That is, as shown in FIG. 5, the rafter 23 is formed by joining end panels 23c, 23c to the longitudinal ends of the C-shaped steel material by welding. Each end panel 23c has screw receiving holes 23d and 23d formed in the inner periphery with female screws to which screws 27 can be fastened. These screw receiving holes 23d and 23d are formed at the same position in each end panel 23c of each rafter 23.

  The base plate roof panel NP is constructed by laying a plurality of the base plate 24 shown in FIG. 4 made of hard wood cement board or the like on the upper surface 23a of the rafter 23 by screwing or bonding. Further, a waterproof sheet (not shown) is laid, and a roof material 28 such as a tile or a metal plate is further laid thereon. The field board 24 is measured and cut in advance in the factory, and is assigned and laid.

  In the first embodiment, a drainage gradient in the direction indicated by the arrow HS is given to the upper surface 23a of each rafter 23, whereby the slope of the rafter 23 is applied to the field plate roof panel NP supported by the rafter 23. 1 is provided with a drainage gradient inclined so as to be lowered in the direction of the arrow HS in FIG.

Next, a structure in which the rafter 23 is inclined in the direction of the arrow HS will be described with reference to FIG.
In the first embodiment, when the rafter 23 is inclined, the height at which both ends in the longitudinal direction of the rafter 23 are fixed to the both rafter receiving beams 21 and 22 is different between the water upper side and the water lower side of the drainage gradient. ing.

  That is, in the first embodiment, in the rafter screw hole 25 of the rafter receiving beam 22, the screw 27 is inserted in different positions (heights) in the vertical direction on the water upper side and the water lower side of the drainage gradient. . And, by fastening the screws 27 arranged at different heights on the water upper side and the water lower side in the screw receiving holes 23d of the end panel 23c provided at both longitudinal ends of the rafter 23, The fixed heights of both ends of the rafter 23 are varied.

Specifically, in the rafter receiving beam 21 on the underwater side, screws 27 are inserted into the two lower rafter screw holes 25 shown in FIG. It is concluded. In this case, as shown in FIG.1 (b), the height of the lower surface 23b of the rafter 23 with respect to the bottom piece 21b of the rafter receiving beam 21 becomes h1.
On the other hand, in the rafter receiving beam 22 on the water side, among the four rafter screw holes 25 shown in FIG. 3, screws 27 are inserted into the upper two screws holes 25 and fastened to the screw receiving holes 23 d of the rafter 23. In this case, the height of the lower surface 23b of the rafter 23 relative to the bottom piece 21b of the rafter receiving beam 22 is h2, which is higher than the aforementioned h1.
Therefore, based on this height difference (h2−h1), a drainage gradient (for example, 1: 100) that falls from the water upper side to the water lower side is set on the upper surface 23a of the rafter 23. When the rafter 23 is tilted in this way, the screw 27 is also tilted along the tilt. Therefore, the rafter screw hole 25 has an inner diameter outside the screw 27 to allow the screw 27 to tilt. It is assumed that it is formed larger than the diameter. Further, as the rafter 23 is inclined, a gap is generated between the end panel 23c and the upright support piece 21a. Therefore, the outer periphery of the screw 27, the gap portion, and the head of the screw 27 and the upright support piece. It is preferable to provide a spacer that fills the gap and absorbs the inclination between the gap 21a.

  At the construction site, after the roof panel YP is installed in the building unit TU, an eaves edge cover 29 is attached to the underwater edge of the field board roof panel NP as shown in FIG. The eaves bowl 30 is attached below. The eaves rod 30 is supported by a wooden bar 31 fixed to the rafter receiving beam 21 via a bracket 32. In addition, an eaves decorative material 33 that covers the lower side of the eaves basket 30 is attached to the wooden bridge 31, and a eaves cover 34 is raised from the eaves decorative material 33.

Next, the operation of the first embodiment will be described.
(Assembly at the factory)
When manufacturing a roof panel YP in a factory, the rafter receiving beams 21 and 22 are installed at a predetermined level in the direction perpendicular to the extending direction at a predetermined distance from the rafter receiving beams. The rafters 23 are bridged between 21 and 22 in the orthogonal direction.
Then, the height of both ends in the longitudinal direction of the rafter 23 is adjusted to a height at which a set drainage gradient is obtained, respectively, and a predetermined hole of the rafter screw hole 25 of the rafter receiving beams 21 and 22 and a screw of the rafter 23 After matching the position with the receiving hole 23d, the screw 27 is inserted into the rafter screw hole 25 and fastened to the screw receiving hole 23d of the rafter 23.

In this case, in the first embodiment, as described above, the screw 27 is inserted into the two lower portions of the rafter screw hole 25 of the rafter receiving beam 21 at the lower end of the drainage gradient of the rafter 23. Then, at the end of the rafter 23 on the water gradient side of the drainage gradient, the screws 27 are inserted through the upper two of the rafter screw holes 25 of the rafter receiving beam 22. Accordingly, the rafter 23 is fixed to the rafter receiving beams 21 and 22 by being inclined along the drainage gradient.
Thus, in order to insert the screw 27 by selecting two of the four rafter screw holes 25 pre-opened in the rafter receiving beams 21 and 22 according to the height at which the rafter 23 is fixed. , Height adjustment is easy and workability is excellent. In particular, as compared with a technique in which other parts are interposed in the height direction between the rafter receiving beam and the rafter as in the conventional technique, the number of work steps can be greatly reduced.
In the case of the first embodiment, the slope of the drainage gradient can be arbitrarily changed by arbitrarily selecting a hole through which the screw 27 is inserted from the four rafter screw holes 25. That is, in the above state, the rafter screw holes 25 through which the screws 27 for fixing the rafters 23 are inserted in either of the rafter receiving beams 21 and 22 are set in the middle two in the vertical direction. On the other hand, the drainage gradient can be made gentle. Thus, it is easy to change the drainage gradient.

  When the plurality of rafters 23 are all fixed between the rafters 21 and 22 as described above, the field board 24 is laid on the rafters 23, and a waterproof sheet (illustrated) is further formed thereon. (Omitted) and the roof material 28 are laid on top of each other to form the base plate roof panel NP, and the manufacture of the roof panel YP is completed.

(Construction site construction)
Next, construction at a construction site will be described.
At the construction site, after the building unit TU is installed, the roof panel YP is installed above the uppermost building unit TU.
At this time, four positions symmetrical to the center position of the rafter receiving beams 21 and 22 are selected from the plurality of bolt holes 26 of the rafter receiving beams 21 and 22, as shown in FIGS. The transportation bracket 41 is fastened to the four places with bolts. Then, the suspension wire W is hooked on these transport brackets 41, and the roof panel YP is transported to the upper part of the building unit TU using a crane (not shown).

And after arrange | positioning the roof panel YP in a setting position, each rafter receiving beam 21 (22) is fastened to the beam 12 with the volt | bolt 42 and the nut 43 which are shown in FIG.2 and FIG.4.
As described above, when the carrying bracket 41 is fixed to the rafter receiving beams 21 and 22, the rafter receiving beams 21 and 22 have the bolt holes 26 opened at a constant module interval. According to the lengths of 21 and 22, the transportation bracket 41 can be fixed by selecting the optimal position for suspending the plurality of bolt holes 26. Therefore, even if each rafter receiving beam 21, 22 is cut according to the dimensions of the roof panel YP and the building unit TU, the transport bracket 41 can be fixed at an optimal position for suspending the roof panel YP. it can.

(Effect of Embodiment 1)
In the roof panel YP of the first embodiment described above, the effects listed below can be obtained.

a) Using a pair of rafter receiving beams 21 and 22, both longitudinal ends of the rafter 23 are fixed at different heights with respect to both rafter receiving beams 21 and 22, the rafter 23 is inclined, and the drainage gradient is applied to the roof panel YP. Was set.
Therefore, the number of parts can be reduced compared with the case where other parts are interposed between the rafter receiving beam and the rafter in the height direction, which is advantageous in terms of cost.

  b) The two rafter receiving beams 21 and 22 having the same shape are arranged symmetrically and used. Therefore, the number of parts can be reduced and the manufacturing cost can be reduced as compared with the case where each rafter receiving beam has a different shape.

c) In order to incline the rafters 23 by making the heights of both ends of the rafters 23 different from each other, the rafter screw holes 25 are provided in a number larger than the number of screws 27 to be inserted. The screws 27 are selectively inserted into the rafter screw holes 25 so that the heights of the screws 27 and the rafters 23 fixed thereto are set to arbitrary heights.
Therefore, as compared with the case where the rafter screw hole 25 is drilled each time depending on the height at which the rafter 23 is fixed, the drilling process at the time of construction is unnecessary, and the workability is excellent.

  d) Since each rafter receiving beam 21, 22 is formed in an L-shaped cross-sectional shape and the bottom piece 21 b is arranged to face the lower surface 23 b of the rafter 23, the rafter 23 is arranged with respect to each rafter receiving beam 21, 22. When arranging at a predetermined height, it is easy to maintain a rafter 23 at a predetermined height by arranging a spacer or the like on the bottom piece 21b, and the workability is excellent.

e) The rafter 23 is provided with end panels 23c and 23c at both ends in the longitudinal direction, and screw receiving holes 23d and 23d for fastening the screws 27 are provided on the end panel 23c.
Therefore, it is easy to position the fastening position of the screw 27 with respect to the rafter 23, the fastening work is easy, the workability is excellent, and high position accuracy can be obtained.

  f) Since the bolt holes 26 for fixing the transport bracket 41 are provided at regular intervals in each rafter receiving beam 21, 22, the length of each rafter receiving beam 21, 22 according to the dimensions of the building unit TU to be installed Even if the dimensions are adjusted by cutting, there is no need to make a hole for fixing the transport bracket 41 each time, and the workability is excellent.

  g) The roof panel YP is assembled together with the rafter receiving beams 21 and 22 at the factory, and this roof panel YP is simply fixed to the building unit TU with bolts 42 and nuts 43 at the construction site. So workability is excellent.

(Embodiment 2)
Next, the roof panel YP2 according to Embodiment 2 of the present invention will be described.
This roof panel YP2 is a modification of the roof panel YP of the first embodiment, and is an example in which the direction of the drainage gradient is varied by 90 ° using a part of the common parts of the roof panel YP of the first embodiment. . Therefore, the same components as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  In the roof panel YP2 of the second embodiment, the drainage gradient is set in the direction along the rafter receiving beams 21 and 22, which is the direction indicated by the arrow HS in FIG. In this case, each of the rafters 231, 232, 233 has the same fixed height at both ends thereof as shown in FIG. 6C, and the rafters 232 (231, 233) are installed horizontally. Has been. On the other hand, the rafters 231, 232, 233 are installed at different heights along the drainage gradient. That is, the rafter 233 arranged at the right end in FIG. 6 is arranged highest, while the rafter 231 at the left end is arranged lowest, and the intermediate rafter 232 is arranged at an intermediate height between them. In addition, although the same thing as the rafter 23 used in Embodiment 1 is used for each rafter 231 to 233, the sign is changed depending on the height of the arrangement.

  In installing the rafters 231 to 233 at different heights, in the second embodiment, among the four rafter screw holes 25, positions where the screws 27 for fixing the rafters 231 to 233 are inserted. Are different.

  That is, the screw 27 for fixing the rafter 231 disposed at the lowest position is inserted through the lower two of the four rafter screw holes 25 as shown by black circles in FIG. . Similarly, the screws 27 for fixing the rafters 232 arranged at the intermediate height are inserted through the middle two of the four rafter screw holes 25 as shown by black circles in the figure. The screws 27 for fixing the rafter 233 arranged at the highest position are inserted through the upper two of the four rafter screw holes 25 as indicated by black circles in the figure.

Thereby, the space | interval of the lower surface 23b of each rafter 231-233 and the bottom piece 21b of each rafter receiving beam 21 and 22 becomes large in order of ha, hb, hc, as shown in FIG. The height of ˜233 is arranged higher on the right side in the figure.
Accordingly, when the base plate 24 is laid on the rafters 231 to 233, a drainage gradient in the direction indicated by the arrow HS in FIG. 6A is formed. In the second embodiment, since a triangular space is formed between the upper surface 23a of each of the rafters 231 to 233 and the field plate 24, it is preferable to provide a spacer for filling the space.

  Even in the roof panel YP of the second embodiment, the effects a) to g) can be obtained as in the first embodiment.

  In addition, while using the same rafter receiving beams 21 and 22, rafters 231 to 233, and screws 27 as in the first embodiment, the direction of the roof gradient can be varied by 90 ° to form a roof gradient in a different direction. It is possible to reduce the number of necessary parts.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to such embodiment, A various deformation | transformation and substitution can be added in the range which does not deviate from the summary of this invention.

  For example, in Embodiments 1 and 2, the example in which the roof panel is used for a building unit constituting the unit building is shown, but the present invention is not limited to this, and the roof panel can be used for a building other than the unit building.

In the first and second embodiments, an example in which four rafter screw holes are provided is shown, but the number is not limited to this. For example, in the first and second embodiments, four rafter screw holes are provided, which is larger than the number (2) of screws to be inserted, but the number of rafter screw holes is the number of screws to be inserted. The rafter screw holes may be opened at positions corresponding to the drainage gradient in the rafter receiving beam after the interval between the rafter receiving beams is determined as the dimensions of the building unit are determined. That is, in Embodiments 1 and 2, the rafter screw hole may be opened only at the position where the screw is inserted.
Furthermore, in setting the heights for fixing the rafters relative to the rafter beams, in the first and second embodiments, an example in which the number of screw holes of the rafter beams is plural is shown. The height may be selected by setting the number of screw receiving holes on the rafter side to be larger than the number of screws to be fastened and selecting the screw fastening position on the rafter side. Alternatively, both the rafter screw receiving holes and the rafter receiving beam rafter screw holes are provided in a number larger than the number of screws to be fastened, and both can be selected to set the rafter fixed height in multiple stages. Also good.

  Moreover, in Embodiment 1, 2, although the metal thing was shown as a rafter, it is not limited to this, You may use a wooden thing. In this case, the rafter may be provided with a screw receiver in which a female screw is cut on the inner periphery for fastening the screw, but the screw may be directly fastened. In this case, as shown in FIG. 7, the side surface of the rafter 323 has a parallelogram shape corresponding to the drainage gradient so that the end surface of the rafter 323 is along the upright support piece 21 a of the rafter receiving beams 21 and 22. It may be formed. In this way, when the screw 27 is fastened, the longitudinal end surface of the rafter 323 abuts the rafter receiving beams 21 and 22 on the surface, and high fixing strength can be obtained.

  In the second embodiment, the rafters 231 to 233 have the upper surface 23a and the lower surface 23b oriented horizontally, but may be fixed to the rafter receiving beams 21 and 22 by inclining along the drainage gradient.

  In the first and second embodiments, the steel rafter made of C-type steel is shown. However, the shape is not limited to this, and other types such as square steel, L-shaped steel, H-shaped steel, and I-shaped steel are used. You may use the steel material of the shape.

  Moreover, in Embodiment 1, 2, although the screw receiving hole provided in the edge part panel was shown as a screw receiver provided in a rafter and fastening a screw, it is not limited to this, A screw is fastened to a rafter. A nut or the like may be provided. In this case, you may make it fix a nut directly to a rafter by welding etc., without providing an end part panel.

21 rafter receiving beam 21a upright support piece 21b bottom piece 22 rafter receiving beam 23 rafter 23c end panel 23d screw receiving hole 24 field plate 26 bolt hole 27 screw 41 carrying bracket 231 rafter 232 rafter 233 each rafter 323 rafter NP field base plate Roof panel (panel material)
YP roof panel YP2 roof panel

Claims (9)

A pair of rafter receiving beams arranged in parallel at the positions of two opposite sides of a square roof panel in plan view;
A plurality of rafters bridged in a direction perpendicular to both rafter receiving beams between these rafter receiving beams,
Panel material that is supported by these rafters and forms a roof surface that is inclined along the drainage gradient,
A roof panel with
The rafter has both ends in the longitudinal direction fixed directly to the rafter receiving beam, and the portion arranged on the water upper side of the drainage gradient is more to the rafter receiving beam than the portion arranged below the water. Fixed at a high position,
Due to the height difference formed by these rafters, the panel material is inclined along the drainage gradient ,
The rafter is fixed to the rafter receiving beam by fastening a screw inserted through a rafter screw hole provided in the rafter receiving beam,
The rafter screw hole is provided in a vertical direction with a number larger than the number of screws inserted when the rafter is fixed.
The roof panel , wherein the rafter fixing height with respect to the rafter receiving beam is set by selecting the rafter screw hole through which the screw is inserted . A pair of rafter receiving beams arranged in parallel at the positions of two opposite sides of a square roof panel in plan view;
A plurality of rafters bridged in a direction perpendicular to both rafter receiving beams between these rafter receiving beams,
Panel material that is supported by these rafters and forms a roof surface that is inclined along the drainage gradient,
A roof panel with
The rafter has both ends in the longitudinal direction fixed directly to the rafter receiving beam, and the portion arranged on the water upper side of the drainage gradient is more to the rafter receiving beam than the portion arranged below the water. Fixed at a high position,
Due to the height difference formed by these rafters, the panel material is inclined along the drainage gradient,
The rafter is fixed to the rafter receiving beam by fastening a screw inserted through a rafter screw hole provided in the rafter receiving beam into a screw receiving hole formed in the rafter.
The screw receiving hole is provided in a vertical direction with a number larger than the number of screws to be fastened when fixed,
The roof panel , wherein a fixed height of the rafter relative to the rafter receiving beam is set by selecting a position of the screw receiving hole for fastening the screw . Each of the pair of rafter receiving beams is formed in an L-shaped cross section by a bottom piece extending in the horizontal direction and an upright support piece raised from one horizontal end of the bottom piece. It is arranged symmetrically toward the direction between the two rafters,
The roof panel according to claim 1 or 2 , wherein both ends of the rafter are fixed to the upright support piece in a state where the lower surface of the rafter is opposed to the upper surface of the bottom piece . The drainage gradient is set in the direction perpendicular to the rafter receiving beam,
Each rafter is fixed at a relatively high position on one side of the water, and the other end is fixed at a relatively low position on the bottom side. The roof panel according to any one of claims 1 to 3, wherein the roof panel is inclined along the drainage gradient . The drainage gradient is set in a direction along the rafter receiving beam,
Each rafter is arranged horizontally with both ends fixed at the same height with respect to the rafter receiving beam, and the plurality of rafters are arranged below the water along the drainage gradient. The roof panel according to any one of claims 1 to 3 , wherein the one arranged on the water side is fixed at a relatively high position . The rafter is made of steel, and end plates facing the rafter receiving beam are fixed to both ends,
The roof panel according to any one of claims 1 to 5 , wherein the end plate is provided with a screw receiving hole for fastening the screw . The rafter receiving beam has a plurality of bolt insertion holes formed at predetermined intervals along the longitudinal direction for fastening bolts for fixing a transportation bracket to be used during transportation. The roof panel according to any one of claims 1 to 6 . It is a manufacturing method of the roof panel of any one of Claims 1-7,
Open the rafter screw hole in advance in the rafter receiving beam,
The rafter fixed the end plate in advance and provided a screw receiving hole in the end plate in advance.
The roof is characterized in that, when the roof panel is assembled, a screw is inserted into the rafter screw hole of the rafter receiving beam, the screw is fastened to the rafter screw receiving hole, and the rafter is fixed. Panel manufacturing method. A pair of rafter receiving beams arranged in parallel at the positions of two opposite sides of a square roof panel in plan view;
A plurality of rafters bridged in a direction perpendicular to both rafter receiving beams between these rafter receiving beams,
Panel material that is supported by these rafters and forms a roof surface that is inclined along the drainage gradient,
A roof panel with
The rafter has both ends in the longitudinal direction fixed directly to the rafter receiving beam, and the portion arranged on the water upper side of the drainage gradient is more to the rafter receiving beam than the portion arranged below the water. Fixed at a high position,
Due to the height difference formed by these rafters, the panel material is inclined along the drainage gradient,
Each of the pair of rafter receiving beams is formed in an L-shaped cross section by a bottom piece extending in the horizontal direction and an upright support piece raised from one horizontal end of the bottom piece. It is arranged symmetrically toward the direction between the two rafters,
The rafter has a lower surface opposed to an upper surface of a bottom piece, and both ends thereof are fixed to the upright support piece.