JP6195527B2 - Building roof structure - Google Patents

Description

  The present invention relates to a roof structure of a building.

  In buildings such as houses, skylights that allow natural light such as sunlight to be taken in are sometimes provided on the roof. For example, there is a configuration in which an opening is provided in a roof surface material that forms a folded-plate roof or the like, and a skylight is formed by providing a window sash in the opening (see, for example, Patent Document 1). In this configuration, the window sash has a skylight frame and a plate material such as a glass plate fitted in the skylight frame, and the skylight frame is installed on the roof surface material.

JP 2012-207428 A

  By the way, in a building that constitutes a medium-sized store such as a convenience store, a roof unit having a roof surface material is manufactured at a factory for the purpose of industrializing the building structure, and the roof unit is transported to a building site by a truck or the like. However, there is a technique for constructing a roof by installing a plurality of roof units on a building body at a construction site.

  Here, for buildings with skylights on the roof, the skylight frame is attached to the roof unit at the factory, and the roof unit is transported to the building site together with the skylight frame, so that the effort to attach the skylight frame to the roof unit is reduced to the building site. Can be omitted.

  However, in the configuration in which the skylight frame is installed on the roof surface material, the skylight frame may be hindered when transporting the roof unit because the skylight frame protrudes upward from the roof unit. Concerned. For example, there is a concern that the skylight frame may be in the way and the roof unit cannot be properly stacked on the truck, and the skylight frame or the roof unit may be deformed or damaged.

  The present invention has been made in view of the above circumstances, and in a roof with a skylight constructed using a roof unit, the work burden on the building site is reduced, and the roof unit is preferably transported. This is the main purpose.

  Hereinafter, means and the like effective for solving the above-described problems will be described while showing functions and effects as necessary. In the following, for easy understanding, the corresponding configuration in the embodiment of the invention is appropriately shown in parentheses, etc., but is not limited to the specific configuration shown in parentheses.

  The roof structure of the building of the first invention is a roof structure of a building provided with a roof unit (roof unit 21) which is provided on a building body (building body 12) to form a roof, The unit includes a rectangular parallelepiped roof frame (roof frame 22) and a roof surface material (first roof surface material 45, second roof surface material 46) provided on the roof frame, On the roof frame, a non-installation region (non-installation region 24) where the roof surface material is not installed is formed, and the non-installation region has a skylight frame (skylight frame 20) in the non-installation region. A skylight (skylight 18) is formed by being provided, and the skylight frame is held at a protruding position (protruding position N1) protruding upward from the roof surface material, while the protruding position In the state where the Guide means (worm 52, guide unit 66) that can move to a storage position (storage position N2) lower than the position and guide the movement of the skylight frame to the protruding position and the storage position are provided. It is characterized by.

  According to the first invention, since the skylight frame can be moved to the storage position in the roof unit, after the skylight frame is attached to the roof unit at the factory, the roof unit with the skylight frame is transported from the factory to the construction site. In such a case, by moving the skylight frame to the storage position, it is possible to make the skylight frame less likely to hinder the transportation of the roof unit. For this reason, it can suppress that a skylight frame or a roof unit deform | transforms or breaks at the time of conveyance of a roof unit. In addition, since the movement of the skylight frame is guided by the guide means, it is possible to facilitate the operation of moving the skylight frame to the storage position in the factory and the operation of moving the skylight frame from the storage position to the protruding position at the construction site. .

  As described above, in a roof with a skylight constructed using a roof unit, the work burden at the construction site can be reduced, and the roof unit can be suitably transported.

  In a second invention, in the first invention, the guide means has a holding portion (the tooth portion 52c of the worm 52, the upper support member 71, the lower support member 72) for holding the skylight frame in a predetermined position. The holding portion can shift between a storage state in which the skylight frame is held at the storage position and a non-storage state in which the holding portion holds the skylight frame at a position different from the storage position.

  According to the second invention, since the skylight frame can be arranged at the storage position by an easy operation of shifting the guide means to the storage state, it is possible to reduce the work burden when the skylight frame is temporarily installed at the storage position in the factory. In addition, in this case, since the skylight frame is held in the storage position by the holding portion, it is possible to suppress the skylight frame from moving while the roof unit is being transported from the factory to the construction site. Therefore, the roof unit can be transported in an appropriate state.

  In a third invention, in the second invention, the non-contained state of the guide means includes a protruding state in which the holding portion holds the skylight frame at the protruding position.

  According to the third invention, since the skylight frame is moved to the protruding position by an easy operation of shifting the holding portion to the protruding state, after the roof unit is transported to the building site, the skylight frame is moved to the protruding position. Can reduce the work load when installing in the factory. In addition, in this case, since the skylight frame is held at the protruding position by the holding portion, the work for fixing the skylight frame to the roof unit can be facilitated.

  According to a fourth invention, in the second or third invention, as the guide means, a tooth extending along the moving direction of the skylight frame to the protruding position and the storage position and protruding outward along the radial direction A worm (worm 52) having a portion (tooth portion 52c) as the holding portion is provided, and a meshing portion (meshing portion 53) meshing with the tooth portion of the worm is provided on the skylight frame. The skylight frame moves to the projecting position or the storage position when the meshing portion moves up and down as the worm rotates.

  According to the fourth invention, it is possible to construct a mechanism for raising and lowering the skylight frame using the worm that is a screw gear. In this case, even if the skylight frame is not lifted or suspended, the skylight frame can be moved to the storage position or protruding position by performing an easy operation of rotating the worm. The work burden when setting the position can be reduced. Moreover, when the skylight frame is set to the protruding position at the construction site, the height position of the skylight frame can be finely adjusted easily by reducing the increase / decrease amount of the rotation angle of the worm.

  In a fifth invention, in the second or third invention, the guide means includes a guide member (guide member 67) extending along a moving direction of the skylight frame to the protruding position and the storage position, As the holding portion, a support state in which the skylight frame can be supported from below by being at least partially disposed at a position below the skylight frame, and the skylight by retracting from the position below the skylight frame. And a support member (upper support member 71, lower support member 72) capable of shifting to a permission state permitting movement of the frame, wherein the skylight frame moves upward. When the skylight frame is pushed up from below by the skylight frame, the support state shifts to the permission state, and when the skylight frame moves to a position higher than the support member, the permission state shifts to the support state. And As the support member, when the skylight frame is in the storage position, a lower support member (upper support member 71) that supports the skylight frame in the support state, and the skylight at a position higher than the lower support member. An upper support member (lower support member 72) that supports the skylight frame in the support state when the frame is in the protruding position is provided.

  According to the fifth invention, since the support member is pushed up by the skylight frame to shift from the support state to the permission state, the operator shifts the support member to the permission state in advance when the skylight frame is raised. There is no need to do this. Further, when the skylight frame passes above the support member, the support member returns from the permitted state to the support state without permission, so that the operator supports the support member when placing the skylight frame on the support member. There is no need to go back to work. Therefore, the skylight frame can be hooked on the support member by performing an easy operation of moving the skylight frame upward according to the guidance of the guide means.

  In addition, since the support member is individually provided for each of the storage position and the protruding position, it is possible to perform an easy operation of moving the skylight frame upward in both the factory and the construction site. The skylight frame can be arranged at each of the storage position and the protruding position. In any position, the skylight frame can be held by the support member in a stable state.

  According to a sixth invention, in any one of the first to fifth inventions, the guide means is provided on an outer peripheral side of the skylight frame, along the moving direction of the skylight frame to the protruding position and the storage position. The roof surface material is provided with work openings (work openings 61) that allow work on the guide means at positions aligned with the guide means in the vertical direction.

  According to the sixth invention, since the guiding means is arranged on the outer peripheral side of the skylight frame, natural light such as sunlight taken from the skylight is different from the configuration in which the guiding means is arranged on the inner peripheral side of the skylight frame. Can be prevented from being blocked by the guide means.

  In addition, since the guide means can be exposed to the upper side of the roof surface material through the work opening, after the roof unit is installed at the construction site, the worker can remain on the roof surface material while facing the skylight frame and the guide means. Work can be performed. In this case, since the worker can easily see the relative height position of the skylight frame with respect to the roof surface material by being on the roof surface material, the height position of the skylight frame can be set appropriately. .

  The present invention is preferably applied to the fourth invention, and a worm is preferably provided as a guide means. In this case, since the worm can be exposed to the upper side of the roof surface material through the work opening, the worker can perform the rotation operation of the worm (the height adjustment operation of the skylight frame) while being on the roof surface material. it can. Therefore, the operator can actually visually check the relative height position of the upper end portion of the skylight frame with respect to the upper surface of the roof material when finely adjusting the height position of the skylight frame using the worm.

  According to a seventh invention, in the sixth invention, as the roof surface material, a folded plate material (first roof surface) that forms a folded plate roof in which a mountain portion (mountain portion 45a) and a valley portion (valley portion 45b) are adjacent to each other. Material 45) is provided, and in the valley portion of the folded plate material, the end portion on the skylight frame side is folded upward so that it is recessed toward the side away from the skylight frame. A folding recess (folding recess 64) is formed, and a region surrounded by the inner circumferential surface of the folding recess and the outer circumferential surface of the skylight frame forms the working opening.

  According to the seventh invention, since the end portion of the upper folded plate member is folded up, rainwater or the like flows in the folded portion in a direction away from the boundary with the skylight frame. It can suppress that rainwater etc. accumulate in the boundary part of a board | plate material and a skylight frame.

  In addition, since the folded recess formed by folding the end portion of the upper folded plate material is used as the working opening, the working opening can be formed without forming a new through hole in the folded plate. It can be secured. For this reason, the structure for setting the height position of a skylight frame appropriately using a work opening part can be implement | achieved, without giving a new process with respect to a folded plate material.

  According to an eighth aspect, in the seventh aspect, the waterproof member (waterproof member 41) spans the folded plate material and the skylight frame across the folded-up recess, and the guide means includes the waterproof member Covered from above.

  According to the eighth invention, in the configuration in which the waterproof treatment for the folded concave portion is performed by the waterproof member, the guide means is disposed at the height position covered by the waterproof member. There is no need for waterproofing. Therefore, it can suppress that the work burden regarding a waterproofing process increases about the roof which can raise / lower a skylight frame.

  In a ninth invention, in any one of the first to eighth inventions, a plurality of the roof units are provided side by side, and each non-installation region of the plurality of roof units is connected to the roof. The roof opening part (roof opening part 19) is formed by this, and the said skylight frame provided in each non-installation area | region of the said adjacent roof unit is mutually connected.

  According to the ninth aspect, since the height positions of the adjacent skylight frames can be finely adjusted individually by rotating the worm, the height positions of the skylight frames can be easily aligned. Therefore, it is possible to easily realize a configuration in which adjacent skylight frames are connected.

  In addition, it is preferable to apply this invention to 4th invention. In this case, since the height position of each of the adjacent skylight frames can be finely adjusted by rotating the worm, it becomes easy to appropriately set the relationship between the height positions of these skylight frames.

Diagram showing building structure Exploded perspective view showing the structure of the building Perspective view of roof frame A-A line cross-sectional view of FIG. Perspective view around the skylight frame Diagram showing the structure of the lifting mechanism Diagram showing the configuration around the skylight frame The figure which shows the state where the roof unit is loaded on the truck The figure which shows the structure of another raising / lowering mechanism

  Hereinafter, an embodiment embodying the present invention will be described with reference to the drawings. In the present embodiment, the roof structure of the present invention is embodied in a building constructed by a steel frame assembling method, and this building can be used as a store or an office. FIG. 1 is a diagram showing the configuration of the building 10, FIG. 2 is an exploded perspective view showing the configuration of the building 10, and FIG. 3 is a perspective view of the roof frame 22. In FIG. 1, (a) shows a perspective view of the building 10, and (b) shows a plan view of the building 10.

  As shown in FIG. 1A and FIG. 2, the building 10 includes a building main body 12 provided on the foundation 11 and a roof 13 provided on the building main body 12. The building body 12 has a substantially rectangular parallelepiped shape, and has an indoor space 15 (see FIG. 4) surrounded by the outer wall 14 thereof. The outer wall 14 is provided with openings such as windows and doorways, and fittings such as doors and window sashes are provided in the openings. In addition, the one side surface extended in the width direction among the outer peripheral surfaces of the building 10 is made into the building front (facade), and the collar part which protruded toward the front side is provided in the roof 13 at the front side.

  The building main body 12 has a plurality of columns 16 erected on the foundation 11, and a large beam 17 connecting the upper ends of the columns 16. The pillar 16 includes a lattice pillar and a stud, and the lattice pillar includes a plurality of pillars and a lattice (reinforcing material) connecting the pillars, and the pillar is formed of square steel. Has been. The column 16 is a walled column that is integrated with the outer wall 14, and is arranged along the outer wall 14. The large beam 17 is formed of H-shaped steel and is installed on each column 16. The large beam 17 extends along the outer wall 14.

  In addition, in the part which forms the building front in the outer wall 14, there is a window glass region in which a plurality of window glasses are provided side by side. In the window glass region, the window glass is fitted and killed. In the window glass region, studs are arranged between adjacent window glasses.

  The roof 13 is a land roof (flat roof) and has a water gradient with the depth direction of the building 10 as an inclination direction. The roof 13 has a shape in which an intermediate portion in the depth direction protrudes upward, and is inclined downward from the intermediate portion toward the front side and the back side. In the roof surface of the roof 13, a portion inclined downward toward the front side is defined as a first roof surface 13a, and a portion inclined downward toward the back side is defined as a second roof surface 13b. In FIGS. 1A and 2, the angle of the water gradient is made larger than the actual angle in order to clearly show that the roof surfaces 13a and 13b have a water gradient.

  As shown in FIGS. 1A and 1B, the roof 13 is provided with a skylight 18 capable of taking natural light such as sunlight into the indoor space 15. The skylight 18 has a horizontally long portion 18 a extending along the width direction of the building 10 and a depth portion 18 b extending along the depth direction of the building 10. The skylight 18 is arrange | positioned in the part which forms the 1st roof surface 13a in the roof 13. FIG. The skylight 18 is U-shaped in plan view, the horizontally long portion 18a extends along the boundary between the first roof surface 13a and the second roof surface 13b, and the depth portion 18b is formed at both ends of the horizontally long portion 18a. It extends from each side toward the front of the building.

  The roof 13 is provided with a roof opening 19 opened upward, and the roof window 19 is provided with a skylight frame 20 to form a skylight 18. The skylight frame 20 is formed in a rectangular frame shape using a metal material, a synthetic resin material, or the like, and a plurality of the skylight frames 20 are provided side by side along the roof opening 19. For example, a plurality of rows are arranged along the longitudinal direction of the horizontally long portion 18a, and a plurality of rows are arranged along the longitudinal direction of the depth portion 18b. The skylight frame 20 is fitted with a light-transmitting translucent panel, and natural light is transmitted through the translucent panel and taken into the indoor space 15. The translucent panel is a plate made of glass material or synthetic resin material.

  The roof 13 has a plurality of roof units 21 installed on the building body 12. The roof unit 21 is formed in a rectangular parallelepiped shape, and a plurality of the roof units 21 are provided side by side along the width direction of the building 10 with the longitudinal direction thereof being the depth direction of the building 10. The roof unit 21 is in a state of being spanned between a part on the front side of the building and a part on the back side of the building on the outer wall 14, and the large beam 17 disposed on the part on the front side of the building or the part on the back side of the building. Supported by a column 16.

  The roof unit 21 includes a rectangular parallelepiped roof frame 22 and a roof surface portion 23 provided on the roof frame 22. In the roof unit 21, the upper surface of the roof surface portion 23 is a roof surface, and both the roof surfaces 13 a and 13 b are formed in a state where the roof unit 21 is installed on the building body 12. On the roof frame 22, a non-installation region 24 in which neither of the roof surface portions 23 is installed is formed, and the skylight frame 20 is provided in the non-installation region 24.

  In the roof 13, the roof opening 19 is formed by connecting the non-installation region 24 of each roof unit 21. In the roof opening part 19, the skylight frame 20 is installed for every roof unit 21 (each non-installation area | region 24). For example, the non-installation area 24 of the fourth roof unit 21 from the right in FIG. 1B forms a part of the horizontally long portion 18a of the skylight 18 and crosses the roof unit 21 in the short direction. One skylight frame 20 is provided in the non-installation area 24. The non-installation region 24 of the third roof unit 21 from the right forms a part of the horizontally long portion 18a and the depth portion 18b of the skylight 18 and is L-shaped in plan view. The two skylight frames 20 are arranged side by side along the longitudinal direction of the roof unit 21.

  A cover member 25 that covers the boundary portion from above is provided at the boundary portion between the adjacent skylight frames 20 (see FIG. 5). The cover member 25 is fixed to the roof surface portion 23, the roof frame 22, and the skylight frame 20, and restricts rainwater and the like from entering the building 10 through a gap between the skylight frames 20. In this case, the cover member 25 is in a state of being spanned between adjacent skylight frames 20, thereby connecting the skylight frames 20. The adjacent skylight frames 20 are connected to each other by a fixing tool such as a screw in addition to the cover member 25.

  As shown in FIG. 3, the roof frame 22 is a three-dimensional truss formed by combining a plurality of long steel materials, and has an internal space. The roof frame 22 has a longitudinal truss 27 extending along the longitudinal direction of the roof frame 22 and a short truss 28 extending along the lateral direction. The longitudinal truss 27 and the short truss 28 are planar trusses orthogonal to each other, and the roof frame 22 is a three-dimensional truss by combining the longitudinal truss 27 and the short truss 28.

  In the roof frame 22, a pair of longitudinal trusses 27 are provided side by side along the short direction of the roof frame 22. A plurality of short trusses 28 are provided side by side along the longitudinal direction of the roof frame 22, and each short truss 28 connects a pair of long trusses 27. The short truss 28 is provided between the pair of longitudinal trusses 27 and is stretched over the longitudinal trusses 27.

  Each of the longitudinal truss 27 and the short truss 28 includes an upper chord member 31 and a lower chord member 32 that are arranged to face each other in the vertical direction, and a diagonal member 33 that connects the upper chord member 31 and the lower chord member 32 to each other. Both the longitudinal truss 27 and the short truss 28 are parallel trusses. In each of the longitudinal truss 27 and the short truss 28, a plurality of diagonal members 33 are arranged along the extending direction of the string members 31 and 32, and each diagonal member 33 is provided between the string members 31 and 32. ing. The diagonal members 33 are inclined in the direction in which the diagonal members 33 are arranged with respect to the vertical direction.

  In addition, the upper chord material 31, the lower chord material 32, and the diagonal material 33 are each formed by the channel steel as steel materials, and are arrange | positioned toward the horizontal direction in the open side of each groove part. In the longitudinal truss 27, the grooves of the upper chord member 31, the lower chord member 32, and the diagonal member 33 face the short direction of the roof frame 22, and in the short truss 28, each groove portion extends in the longitudinal direction of the roof frame 22. It is suitable.

  In the longitudinal truss 27, the lower chord member 32 extends in the horizontal direction, while the upper chord member 31 is inclined along the first roof surface member 45, and the inclination angle thereof is the first roof surface member 45 (the first roof member 45). The inclination angle of one roof surface 13a) is the same. In the upper chord member 31 of the longitudinal truss 27, the end on the back side of the building is the upper end, and the end on the back side of the building is the lower end. In this case, in the roof frame 22, the longitudinal direction is an inclined direction in which the upper chord material 31 is inclined, and the longitudinal truss 27 corresponds to the inclined truss. In addition, the near side edge part of the upper chord material 31 in FIG. 3 is an upper edge part arrange | positioned at the building back side.

  On the other hand, in the short truss 28, both the upper chord material 31 and the lower chord material 32 extend in the horizontal direction. The upper chord member 31 of the short truss 28 is provided between the upper chord members 31 of the pair of longitudinal trusses 27, and its end surface is fixed to the side surface of the upper chord member 31 of the longitudinal truss 27 by welding or the like. Similarly, the lower chord member 32 of the short truss 28 is provided between the lower chord members 32 of the pair of longitudinal trusses 27, and the end surface thereof is fixed to the side surface of the lower chord member 32 of the longitudinal truss 27 by welding or the like. . Note that the short truss 28 corresponds to an orthogonal truss orthogonal to the longitudinal truss 27.

  The longitudinal truss 27 has a bundle 34 extending in the vertical direction. Like the diagonal material 33, the bundle material 34 connects the upper chord material 31 and the lower chord material 32, and a plurality of diagonal materials 33 are provided side by side along the chord materials 31 and 32. The bundle members 34 are arranged side by side on the short truss 28 in the short direction of the roof frame 22. In the longitudinal truss 27, the bundle members 34 are arranged at both the longitudinal end portion and the intermediate position of the roof frame 22. In the roof frame 22, short trusses 28 are arranged between the bundle members 34 of the pair of long trusses 27, and the short trusses 28 are reinforced by the bundle members 34 of the long trusses 27. The bundle member 34 is formed of square steel.

  Next, the skylight 18 of the roof 13 will be described with reference to FIGS. 4 is a cross-sectional view taken along the line AA of FIG. 1B, FIG. 5 is a perspective view of the periphery of the skylight frame 20, FIG. 6 is a view showing the configuration of the lifting mechanism 51, and FIG. FIG. In FIG. 4, only the frame body such as the pillar 16 is illustrated for the building body 12, and the diagonal member 33 and the like are omitted for the roof 13. In FIG. 5, the skylight frame 20 at the storage position N <b> 2 is illustrated by phantom lines, while the valley 45 b, the mountain 45 a, the waterproof member 41, and some cover members 25 of the first roof surface material 45 are illustrated. Omitted. In FIG. 6, (a) shows the case where the skylight frame 20 is in the protruding position N1, and (b) shows the case where the skylight frame 20 is in the storage position N2. In FIG. 7, (a) shows a plan view around the skylight frame 20, and (b) shows a perspective view of the first roofing material 45. Moreover, illustration of the waterproof member 41 is abbreviate | omitted in Fig.6 (a) and FIG.7 (a).

  As shown in FIGS. 4 and 5, the skylight frame 20 is provided in a state of protruding upward from the roof surface portion 23. In the skylight frame 20, the lower end portion enters the roof opening 19 from above, and the upper end portion is arranged at a position higher than the roof surface portion 23. The height position of the skylight frame 20 in this case is referred to as a protruding position N1.

  The roof 13 is provided with a waterproof member 41 that spans between the skylight frame 20 and the roof surface portion 23 across the boundary between the skylight frame 20 and the roof surface portion 23. The waterproof member 41 is formed of a waterproof plate or sheet material, and extends along the peripheral edge of the skylight frame 20. In this case, the waterproof member 41 is joined to the upper surface of the skylight frame 20 and the upper surface of the roof surface portion 23 by an adhesive or the like.

  In the building 10, the indoor space 15 has a ceiling part (not shown), and a ceiling back space 42 is provided above the ceiling part. The ceiling space 42 is formed between the roof surface portion 23 and the ceiling portion, and the ceiling space 42 includes the internal space of each roof unit 21. A ceiling opening is formed below the skylight 18 (roof opening 19) in the ceiling of the indoor space 15, and outdoor natural light is taken into the indoor space 15 through the skylight 18 and the ceiling opening. Yes. In this case, the skylight 18 and the ceiling opening constitute a top light. The ceiling space 42 is provided with a roof passage (not shown) that spans the skylight 18 and the roof opening.

  In the roof 13, a roof heat insulating portion 43 (see FIG. 6A) is provided below the roof surface portion 23. The roof heat insulating portion 43 is formed in a plate shape from a foam heat insulating material, and extends along the lower surface of the roof surface portion 23. In addition, the roof surface part 23 is spaced apart from the roof frame 22 by being installed on the roof frame 22 across the spacer, and the roof heat insulating part 43 is disposed in the separated part. In this case, the roof heat insulating portion 43 extends along the upper surface of the roof frame 22 (the upper surfaces of the trusses 27 and 28). Moreover, the roof heat insulation part 43 is provided in the state extended along the outer peripheral surface of a roof channel | path.

  In the roof unit 21, the roof surface portion 23 includes a first roof surface material 45 that forms the first roof surface 13a and a second roof surface material 46 that forms the second roof surface 13b. The roof surface materials 45 and 46 are both made of a fired material such as a steel plate, but the first roof surface material 45 is a folded plate material obtained by bending a steel plate or the like, while the second roof surface material. Reference numeral 46 denotes a flat plate whose upper and lower surfaces form flat surfaces. In the 1st roofing material 45, the peak part 45a and the trough part 45b are arranged by turns, and the crease | fold of these peak parts 45a and the trough part 45b is the longitudinal direction (of the 1st roof surface 13a of the roof unit 21). It extends along the water gradient.

  The roof surface portion 23 has a height dimension that is larger than the thickness dimension of the wood that forms the roof surface materials 45 and 46 because the roof surface materials 45 and 46 are three-dimensionally arranged. For the first roof surface material 45, the distance between the upper surface of the mountain portion 45 a and the lower surface of the valley portion 45 b is the thickness dimension of the roof surface portion 23. The upper end of the second roof surface material 46 is disposed on the extension line of the upper end of the peak portion 45 a of the first roof surface material 45, and the lower end thereof is disposed on the extension line of the lower end of the valley portion 45 b of the first roof surface material 45. As a result, the thickness of the roof surface portion 23 is formed.

  The ceiling back space 42 has a pocket space portion 42 a formed between the roof frame 22 and the roof surface materials 45 and 46 in the roof unit 21. In the pocket space portion 42 a, the space between the roof unit 21 and the roof surface portion 23, the lower space of the mountain portion 45 a of the first roof surface material 45 in the roof surface portion 23, and the second roof surface material 46 in the roof surface portion 23. The lower space is included. In this case, the effective height dimension of the pocket space portion 42a is a separation distance between the roof surface materials 45 and 46 and the roof unit 21 (upper chord material 31) in the vertical direction. In addition, the effective height dimension of the pocket space part 42a is larger in the lower part of the peak part 45a of the first roof surface material 45 than in the lower part of the valley part 45b.

  When the building 10 is constructed at the building site, the roof unit 21 is manufactured at the factory and then transported to the building site and installed on the building body 12. Here, the skylight frame 20 is attached to the roof unit 21 in the factory, and the roof unit 21 is transported to the building site with the skylight frame 20 attached. In this case, in the state in which the skylight frame 20 protrudes to a position higher than the roof surface portion 23, there is a concern that the skylight frame 20 becomes an obstacle when the roof unit 21 is transported.

  On the other hand, the roof unit 21 is provided with an elevating mechanism 51 that allows the skylight frame 20 to be raised and lowered. The skylight frame 20 is moved up and down by the elevating mechanism 51, so that the protruding position N1 and the protruding position thereof are provided. It is possible to move to a storage position N2 lower than N1. For this reason, when transporting the roof unit 21 from the factory to the construction site, the skylight frame 20 is placed in the storage position N2, and after the roof unit 21 is transported to the construction site, the skylight frame 20 is moved to the protruding position N1. By doing so, the roof unit 21 and the skylight frame 20 can be industrialized, and the skylight frame 20 can be prevented from being obstructed when the roof unit 21 is transported.

  The skylight frame 20 is in a state where it does not protrude upward from the roof surface portion 23 when it is in the storage position N2. Here, the height dimension (for example, 13 cm) of the skylight frame 20 is made smaller than the thickness dimension (for example, 20 cm) of the roof surface portion 23. For this reason, the skylight frame 20 does not protrude downward from the roof surface portion 23 even when it is at the storage position N2 as well as at the protrusion position N1. That is, it does not protrude downward from the pocket space portion 42a. Therefore, in the roof unit 21, the skylight frame 20 does not interfere with the roof frame 22 regardless of whether the skylight frame 20 is in the protruding position N1 or the storage position N2. Incidentally, when the skylight frame 20 is in the protruding position N1, the protruding dimension (for example, 10 cm) of the skylight frame 20 from the roof surface portion 23 is smaller than the height dimension of the skylight frame 20.

  As shown in FIGS. 6A, 6 </ b> B, and 7 </ b> A, the elevating mechanism 51 includes a worm 52 that extends along the elevating direction of the skylight frame 20, and a meshing portion 53 that meshes with the worm 52. And a rail portion 54 that guides the direction in which the skylight frame 20 is raised and lowered. The meshing portion 53 is provided on the skylight frame 20, and the skylight frame 20 moves up and down together with the meshing portion 53 as the worm 52 rotates. The worm 52 is disposed between the roof surface portion 23 and the skylight frame 20 in the non-installation area 24 and corresponds to a guide means for guiding the movement of the skylight frame 20.

  The worm 52 is a long screw gear, and is fixed to the roof frame 22 so as to be rotatable with a rotating shaft extending in the vertical direction (for example, the vertical direction). The worm 52 is supported by a support bracket fixed to the upper chord member 31 of the roof frame 22, and is arranged side by side on the skylight frame 20. Specifically, it is disposed on the lower end side of the upper chord member 31 with respect to the skylight frame 20 in the longitudinal direction of the roof unit 21 and at the center position of the skylight frame 20 in the shorter direction of the roof unit 21.

  The meshing part 53 has a long base part 53a extending along the ascending / descending direction of the skylight frame 20, and a plurality of tooth parts 53b arranged along the longitudinal direction of the base part 53a, Each tooth portion 53b is attached to the outer peripheral surface of the skylight frame 20 with the worm 52 side facing. The worm 52 and the meshing portion 53 have length dimensions (vertical dimensions) that can move the skylight frame 20 to both the projecting position N1 and the storage position N2 in a state of meshing with each other.

  If the worm 52 and the meshing portion 53 are meshed with each other, the skylight frame 20 is not only held at the projecting position N1 and the storage position N2, but also between the projecting position N1 and the storage position N2. It can also be held at a position, a position higher than the protruding position N1, and a position lower than the storage position N2.

  The rail portion 54 extends in the vertical direction (for example, the vertical direction) and is fixed to the roof frame 22. The rail portion 54 is supported by a support bracket fixed to the upper chord member 31 of the roof frame 22, and is arranged side by side on the skylight frame 20, like the worm 52. Specifically, a plurality of pieces are arranged on both sides of the skylight frame 20 in the longitudinal direction of the roof unit 21, and the worm 52 is arranged between the adjacent rail portions 54 on the lower end side of the upper chord member 31. ing. In this case, each rail part 54 can suppress that the skylight frame 20 inclines with respect to the raising / lowering direction, when the skylight frame 20 raises / lowers with rotation of the worm | warm 52. As shown in FIG.

  The skylight frame 20 is provided with a hook portion 55 that is hooked on the rail portion 54, and the skylight frame 20 can move in the vertical direction along the rail portion 54 while the hook portion 55 is hooked on the rail portion 54. It has become.

  The skylight frame 20 is fixed to the roof frame 22 and the rail portion 54 at the protruding position N1. For example, the skylight frame 20 is fixed to the rail portion 54 with screws or the like, in addition to being held in position by the worm 52, or connected to the upper chord 31 or the like of the roof frame 22 using a connecting member or the like. The position is held by, for example.

  In the roof unit 21, an operation of rotating the worm 52 (operation of raising and lowering the skylight frame 20) can be performed from above the roof surface portion 23 while the operator is on the roof surface portion 23. Yes. Here, the worm 52 has a worm shaft portion 52a in which a spiral groove portion (male screw portion) is formed, and a worm head portion 52b provided at one end of the worm shaft portion 52a. It arrange | positions in the direction which 52b becomes an upper end. The roof surface portion 23 is provided with a working opening 61 at a position aligned with the worm 52 in the vertical direction. As a result, the operator can grip and rotate the worm head 52b by inserting a hand or a tool into the work opening 61.

  The worm shaft portion 52a is provided with a tooth portion 52c protruding outward along the radial direction thereof. The tooth portion 52c extends in a spiral shape along the outer peripheral surface of the worm shaft portion 52a, and a portion aligned vertically in the tooth portion 52c forms a spiral groove portion. In the worm 52, the tooth part 52 c meshes with the tooth part 53 b of the meshing part 53.

  Note that the tooth portion 52c of the worm 52 corresponds to the holding portion, and for the worm 52, the state in which the skylight frame 20 is held in the storage position N2 corresponds to the storage state, and the skylight frame 20 is held in the protruding position N1. The state of being in a protruding state corresponds to the protruding state. In the worm 52, the state in which the skylight frame 20 is held at a position different from the storage position N2 corresponds to the non-storage state, and the protruding state is a kind of non-storage state.

  As shown in FIG.7 (b), the 1st roof surface material 45 has the folded-up board part 63 by which the edge part of the trough part 45b was folded up. The folded-up plate part 63 forms a folded-up recessed part 64 that is recessed toward the inside of the first roof surface material 45 in plan view. The folded plate part 63 includes a short part 63a extending along the width direction of the valley part 45b, and an oblique part 63b that is obliquely bridged between the short part 63a and the end part of the peak part 45a. The short portion 63a and the oblique portion 63b partition the upper space of the valley 45b and the inner space of the folded-up recess 64 in plan view. The upper end portions of the short portion 63a and the oblique portion 63b are arranged at substantially the same height as the top portion (upper end portion) of the peak portion 45a.

  As shown in FIG. 7A, the folded plate portion 63 (folded concave portion 64) is formed on each of the valley portions 45 b at the end portion extending along the skylight frame 20 in the first roof surface material 45. It is provided for. In this case, in the short direction of the roof unit 21, a plurality of raised concave portions 64 are arranged side by side, and the folded concave portion 64 arranged at an intermediate position among the folded concave portions 64 defines the work opening 61. Forming. The work opening 61 is formed between the folding recess 64 and the skylight frame 20, and the work opening 61 includes an internal space of the folding recess 64, the folding recess 64, and the skylight frame 20. And a gap between them. Here, the waterproof member 41 has a portion that spans the work window 61 and the skylight frame 20 and the folded-up plate portion 63 of the first roof surface material 45, and this portion is The first roof surface material 45 is attached to the plate surface on the trough 45b side in the short portion 63a and the oblique portion 63b.

  The worm 52 is arranged at a height position where it enters the working opening 61 from below. The upper end of the worm 52 is disposed at a height position between the bottom of the valley 45b and the top of the peak 45a. In this case, the worm 52 does not protrude above the folded-up plate portion 63, and is spanned between the skylight frame 20 and the folded-up plate portion 63 across the work opening 61 in the waterproof member 41. It is in a state of being covered and covered from above by the part. Incidentally, the lower end of the worm 52 is disposed at a position lower than the bottom of the valley 45b.

  Next, the construction procedure of the roof 13 will be described with reference to FIG. FIG. 8 is a diagram illustrating a state in which the roof unit 21 is loaded on the truck T. In FIG. 8, (a) shows a view of the track T from the side, and (b) shows a view of the track T from the back.

  The building body 12 is constructed at the building site, and the roof unit 21 manufactured at the factory is installed on the building body 12. In the factory, the elevating mechanism 51 and the skylight frame 20 are attached to the manufactured roof unit 21, and the skylight frame 20 is arranged at the storage position N2 by rotating the worm 52. By the way, a curing sheet that covers the gap between the skylight frame 20 and the roof surface materials 45 and 46 from above is temporarily attached to the roof surface portion 23.

  Thereafter, the roof unit 21 is loaded on the truck T together with the lifting mechanism 51 and the skylight frame 20, and is transported from the factory to the construction site. Three roof units 21 can be loaded on the loading platform T1 of the truck T. The track T includes a column T2 that is erected with the cargo bed T1 interposed therebetween, and a horizontal member T3 that is stretched over the column T2 adjacent in the width direction of the track T. The horizontal members T3 are arranged in two upper and lower stages, and a plurality of horizontal members T3 are arranged in the length direction of the track T in each stage. In the loading platform T1, the space between the loading surface of the loading platform T1 and the first level (lower) horizontal member T3, the space between the first level and the second level (upper side), the second level The upper space is a loading space on which the roof unit 21 is loaded.

  In the roof unit 21, due to having a water gradient, the height dimension of one end portion (referred to as a high end portion) in the longitudinal direction is the height dimension of the other end portion (referred to as a low end portion). The roof units 21 that are larger and are adjacent to each other in the vertical direction are stacked in such a manner that the high end portion and the low end portion are aligned vertically. The roof unit 21 is stacked with the roof surface portion 23 facing upward.

  Further, the separation distance between the roof units 21 adjacent to each other in the vertical direction is smaller than the projecting dimension of the skylight frame 20 from the roof surface portion 23 when the skylight frame 20 is at the projecting position N1. When the roof unit 21 is loaded on the truck T in a state where the roof unit 21 is in the state, there is a concern that the skylight frame 20 may contact the adjacent roof unit 21 or the loading surface of the truck T and the roof unit 21 cannot be loaded in an appropriate state. . On the other hand, when the skylight frame 20 is disposed at the storage position N2, since the skylight frame 20 does not protrude upward from the roof surface portion 23, the skylight frame 20 becomes an obstacle, and the roof unit 21 is appropriately set. It is possible to avoid the situation that the vehicle cannot be loaded in a normal state.

  After transporting the roof unit 21 to the building site and installing it on the building body 12, the skylight frame 20 is raised to the protruding position N1 by rotating the worm 52. Then, the height position between the skylight frames 20 of the adjacent roof units 21 is finely adjusted by rotating the worm 52 through the work opening 61. Thereafter, the skylight frame 20 is fixed to the roof frame 22 and the rail portion 54, and the cover member 25 is attached to the boundary portion of the adjacent skylight frames 20. Furthermore, by attaching the waterproof member 41 to the boundary between the skylight frame 20 and the roof surface portion 23, the waterproof member 41 covers the work opening 61 from above.

  According to the embodiment described in detail above, the following excellent effects can be obtained.

  With respect to the roof unit 21, the skylight frame 20 and the roof unit 21 can be prevented from being deformed or damaged during transportation of the roof unit 21 by moving the skylight frame 20 to the storage position N <b> 2 during transportation. Moreover, since the movement of the skylight frame 20 is guided by the worm 52, the work of moving the skylight frame 20 to the storage position N2 in the factory and the work of moving the skylight frame 20 to the protruding position N1 at the construction site can be facilitated. Therefore, in the roof 13 with the skylight 18 constructed using the roof unit 21, it is possible to reduce the work load at the construction site, and to carry the roof unit 21 suitably.

  Since the skylight frame 20 is moved up and down by an easy operation of shifting the state of the worm 52 by rotating the worm 52, the work burden when the skylight frame 20 is temporarily installed in the storage position N2 in the factory, The work burden when the skylight frame 20 is permanently installed at the protruding position N1 can be reduced. Moreover, since the skylight frame 20 is held by the worm 52, the skylight frame 20 unintentionally moves from the storage position N2 when the roof unit 21 is transported, or the rooflight frame 20 is moved to the roof unit at the construction site. It can suppress that the work burden at the time of fixing with respect to 21 becomes large. Furthermore, by making the increase / decrease amount of the rotation angle of the worm 52 small, fine adjustment of the height position of the skylight frame 20 can be easily performed.

  Since the worm 52 is disposed on the outer peripheral side of the skylight frame 20, for example, unlike the configuration in which the worm 52 is disposed on the inner peripheral side of the skylight frame 20, natural light taken from the skylight 18 is blocked by the worm 52. Can be avoided. Moreover, when the building 10 is constructed, when the waterproof member 41 is not provided on the roof 13, the worm 52 is exposed on the roof through the work opening 61. Can be rotated. In this case, since the operator can easily visually check the relative height position of the skylight frame 20 with respect to the height position of the roof surface portion 23, the height position of the skylight frame 20 can be set appropriately.

  In the roof surface portion 23, the work opening 61 is formed by the raised concave portion 64 of the first roof surface material 45, so that the work opening is not formed even if a new through hole is not formed in the roof surface material 45, 46. The part 61 can be secured. For this reason, the structure provided with the opening 61 for work in the roof surface part 23 is realizable, without giving a new process with respect to the 1st roof surface material 45. FIG. In addition, in the 1st roof surface, rain water etc. flow toward the trough part 45b along the raising recessed part 64 by forming the raising recessed part 64 by the folded-up board part 63, and the skylight frame 20 and It can suppress that rainwater etc. accumulate in the boundary part with the trough part 45b of the 1st roof surface material 45. FIG.

  Since the waterproof member 41 covers the work opening 61 together with the worm 52 from above, it is not necessary to perform a dedicated waterproof process on the worm 52. Therefore, even if the elevating mechanism 51 using the worm 52 is provided on the roof 13, it is possible to suppress an increase in work load related to waterproofing processing.

  Since the height position of the skylight frame 20 can be individually adjusted by rotating the worm 52 for each roof unit 21, the skylight frames 20 of the adjacent roof units 21 are easily connected using the cover member 25 or the like. be able to.

[Other Embodiments]
The present invention is not limited to the description of the above embodiment, and may be implemented as follows, for example.

  (1) In the above embodiment, the work opening 61 is formed by the folded-up plate part 63 of the folded plate material. However, the work opening 61 is formed by the first roof surface material 45 or the second roof surface material 46. You may be a through-hole formed in the intermediate part.

  (2) In the above embodiment, in the roof unit 21, the work opening 61 is provided in the roof surface part 23, but the work opening 61 may be provided in the ceiling part. In this case, the worker can rotate the worm 52 through the work opening 61 while in the indoor space 15 without entering the ceiling space 42.

  (3) In the elevating mechanism 51, as a guide means having a holding portion, a guide unit 66 may be provided instead of the worm 52 as shown in FIGS. 9 (a) and 9 (b). The guide unit 66 includes a guide member 67 that guides the ascending / descending direction of the skylight frame 20, and support members 71 and 72 attached to the guide member 67, and a position overlapping the work opening 61 in the vertical direction. Is arranged. The guide member 67 extends in parallel with the rail portion 54 and is in a state of being hooked on the hook portion 55 of the skylight frame 20 or the like. In this case, the skylight frame 20 moves up and down while being caught by the guide member 67 in addition to the rail portion 54.

  The support members 71 and 72 are at least partially disposed at a position below the skylight frame 20 so as to support the skylight frame 20 from below, and are retracted from the position below the skylight frame 20 so that the skylight frame. It is possible to shift to a permission state permitting the raising and lowering of the 20 and in the support state, the downward movement of the skylight frame 20 is restricted. The support members 71 and 72 are pivotally supported with respect to the guide member 67, and the rotation axis is a boundary portion between the skylight frame 20 and the first roof surface material 45 (the width of the frame portion of the skylight frame 20). Direction). When the support members 71 and 72 are in a support state, one end of the support members 71 and 72 protrudes to a position overlapping the skylight frame 20 in the up-and-down direction. However, when it is in the permitted state, it does not protrude to a position overlapping the skylight frame 20 vertically.

  Of the support members 71, 72, the upper support member 71 can hold the skylight frame 20 at the protruding position N <b> 1 by being in a support state, and the lower support member 72 is positioned below the upper support member 71. It is possible to hold the skylight frame 20 in the storage position N2 by being arranged in the support state. The support members 71 and 72 correspond to the holding portion.

  The support members 71 and 72 are caught by the stoppers 73 and 74 when they are in the support state, so that even if the skylight frame 20 is placed on the support members 71 and 72, the support members 71 and 72 are held in the support state. ing. Of the stoppers 73, 74, the upper stopper 73 is disposed at a position where the upper support member 71 is hooked, and the lower stopper 74 is disposed at a position where the lower support member 72 is hooked. The stoppers 73 and 74 are attached to the guide member 67 and are hooked to the end portions of the support members 71 and 72 on which the skylight frame 20 is not placed.

  For the guide unit 66, the state in which the lower support member 72 holds the skylight frame 20 in the storage position N2 corresponds to the storage state, and the upper support member 71 holds the skylight frame 20 in the protruding position N1. The state of being in a protruding state corresponds to the protruding state. Regardless of the state of the support members 71 and 72, a state different from the storage state corresponds to the non-storage state, and the protruding state is a kind of non-storage state.

  The support members 71 and 72 are biased by a biasing member (not shown) such as a spring in a direction in which they are held in a supported state, and are held in a permitted state even when the skylight frame 20 is not supported. . The urging member is a pulling spring, and is provided in a state of being stretched between the end portions of the support members 71 and 72 that are hooked on the stoppers 73 and 74 and the stoppers 73 and 74. Therefore, one end of the support members 71 and 72 is pushed up from below by the skylight frame 20, so that the support member 71 shifts from the support state to the permitted state against the biasing force of the biasing member, and the pushup by the skylight frame 20 is released. Then, the urging force of the urging member returns from the permitted state to the supporting state again.

  Note that, in a state where the support members 71 and 72 are not pushed up from below by the skylight frame 20, the support members 71 and 72 may be shifted to a support state by their own weight. For example, in the longitudinal direction of the support members 71 and 72, the rotation shaft is arranged at a position near one end of both ends, and the end portion far from the rotation shaft moves to the lower side of the skylight frame 20, and the rotation shaft It is set as the structure by which the edge part nearer is hooked on the stoppers 73 and 74. In this configuration, when the support members 71 and 72 are pushed up by the skylight frame 20 and shift to the permitted state, the upper ends of the support members 71 and 72 are arranged closer to the skylight frame 20 than the rotation shaft. Yes. By setting it as these structures, the structure which the support members 71 and 72 transfer to a support state with dead weight is realizable.

  For the roof unit 21 provided with the support members 71 and 72, when the skylight frame 20 is assembled at the factory, the skylight frame 20 is moved from a position lower than the lower support member 72 to the storage position N2 along the rail portion 54. It is preferable to make it. This is simply by raising the skylight frame 20 toward the storage position N <b> 2, and the lower support member 72 is pushed up by the skylight frame 20 to shift to the permitted state, while the skylight frame 20 is moved to the lower support member 72. This is because, when reaching a higher position, the lower support member 72 is released from being pushed up by the skylight frame 20 and returned to the support state. Therefore, after the lower support member 72 returns to the support state, the skylight frame 20 can be installed at the storage position N2 by an easy operation of placing the skylight frame 20 on the lower support member 72.

  After transporting the roof unit 21 together with the skylight frame 20 to the construction site, the skylight frame 20 is simply moved upward from the storage position N2 toward the protruding position N1, thereby installing the skylight frame 20 at the protruding position N1. Can do. As in the case where the skylight frame 20 is installed at the storage position N2, the skylight frame 20 is moved up to a position higher than the upper support member 71 while the upper support member 71 is pushed up by the skylight frame 20, so that the permission state is established. This is because the shifted upper support member 71 returns to the support state again.

  Note that the support members 71 and 72 are not configured to rotate in the vertical direction, but may be configured to rotate in the horizontal direction or linearly move in a direction different from the lifting / lowering direction of the skylight frame 20. Good. In this case, even if the configuration in which the support members 71 and 72 are shifted from the support state to the permitted state by being pushed up by the skylight frame 20 cannot be realized, the worker moves the support members 71 and 72 to the support state and the permitted state. Can do.

  Further, in the roof unit 21, even if the upper support member 71 is not provided, if the lower support member 72 is provided, the work of temporarily installing the skylight frame 20 at the storage position N2 in the factory is facilitated. it can.

  (4) The elevating mechanism 51 may have a link mechanism, a telescopic arm, and a hydraulic jack. Even in this case, it is preferable that the elevating mechanism 51 has a function of holding the skylight frame 20 at the protruding position N1 or the storage position N2.

  (5) In the above embodiment, the skylight frame 20 has entered the non-installation region 24 of the roof surface portion 23 from above even when it is at the protruding position N1, but the skylight frame 20 is at the protruding position N1. In some cases, it may be arranged at a height position spaced upward from the non-installation region 24 (roof surface portion 23). In addition, when the skylight frame 20 is in the storage position N2, the skylight frame 20 may not protrude upward from the roof surface portion 23 but may protrude from the roof surface portion 23.

  (6) In the above-described embodiment, both the worm 52 and the rail portion 54 are provided. However, it is sufficient that at least one of the worm 52 and the rail portion 54 is provided as the guide means. For example, even if the worm 52 and the meshing portion 53 are not provided, if the rail portion 54 is provided, the rail portion 54 can guide the movement of the skylight frame 20 to the protruding position N1 and the storage position N2. it can. In this case, the skylight frame 20 is temporarily fixed at the storage position N2, and is fixed to the rail portion 54 with screws or the like at the protruding position N1.

  DESCRIPTION OF SYMBOLS 10 ... Building, 12 ... Building body, 19 ... Roof opening, 20 ... Skylight frame, 21 ... Roof unit, 22 ... Roof frame, 24 ... Non-installation area, 41 ... Waterproof member, 45 ... Roof surface material and folded plate material 45a ... mountain portion, 45b ... valley portion, 46 ... second roof surface material as roof surface material, 52 ... worm as guide means, 52c ... tooth portion as holding portion, 53 ... engagement 61: Work opening, 64: Folding recess, 66 ... Guide unit as guide means, 67 ... Guide member, 71 ... Upper support member as holding part and support member, 72 ... As holding part and support member Lower support member, N1... Projection position, N2.

Claims (8)

A roof structure of a building including a roof unit that is provided on the building body to form a roof,
The roof unit has a rectangular parallelepiped roof frame and a roof surface material provided on the roof frame,
On the roof frame, a non-installation area where the roof surface material is not installed is formed,
The non-installation area forms a skylight by providing a skylight frame in the non-installation area,
While the skylight frame is held in a protruding position protruding upward from the roof surface material, it is movable to a storage position lower than the protruding position in a state where it is not held in the protruding position,
A roof structure for a building, characterized in that guide means for guiding movement of the skylight frame to the protruding position and the storage position is provided. The guiding means includes
A holding portion that holds the skylight frame at a predetermined position, and the holding portion holds the skylight frame at the storage position; and the holding portion positions the skylight frame different from the storage position. The building roof structure according to claim 1, wherein the building roof structure can be shifted to a non-storing state held by the housing.   The building roof structure according to claim 2, wherein the non-contained state of the guide means includes a protruding state in which the holding portion holds the skylight frame at the protruding position. As the guide means, there is provided a worm having tooth portions extending along the moving direction of the skylight frame to the protruding position and the storage position and protruding outward along the radial direction as the holding portions,
The skylight frame is provided with a meshing portion meshing with the tooth portion of the worm,
The roof of the building according to claim 2 or 3, wherein the skylight frame moves to the protruding position or the storage position when the meshing portion moves up and down as the worm rotates. Construction. The guide means is provided on an outer peripheral side of the skylight frame, and extends along a moving direction of the skylight frame to the protruding position and the storage position,
The roof surface material, the working opening that enables operations on said guide means, any one of claims 1 to 4, characterized in that is provided at a position aligned with the guide means in the vertical direction 1 The roof structure of the building described in the section. As the roof surface material, a folded plate material forming a folded plate roof in which a mountain portion and a valley portion are adjacent to each other is provided,
In the valley portion of the folded plate material, an end portion on the skylight frame side is folded upward, so that a raised recess recessed toward the side away from the skylight frame is formed,
The building roof structure according to claim 5 , wherein a region surrounded by an inner peripheral surface of the raised recess and an outer peripheral surface of the skylight frame forms the work opening. A waterproofing member spanned between the folded plate material and the skylight frame across the folded recess,
The roof structure of a building according to claim 6 , wherein the guide means is covered from above by the waterproof member. A plurality of the roof units are provided side by side,
In the roof, a roof opening is formed by connecting each non-installation region of the plurality of roof units,
The roof structure of a building according to any one of claims 1 to 7 , wherein the skylight frames provided in each non-installation region of the adjacent roof units are connected to each other.

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