JP2009280983A - Staircase structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an attractive staircase structure formed in a building. <P>SOLUTION: A living room 15 partitioned by bearing walls 11-14 is formed in the building 10. In the living room 15, a staircase wall 16 facing the bearing wall 13 is vertically installed at a position apart from the bearing wall 13, and a folded staircase 20 is provided to the staircase wall 16. The portion (lower section) of the staircase 20 from a landing 21 to the floor surface 15a of the living room 15 is formed in a cantilevered staircase structure. Under the staircase 20, a through-hole 22 is formed in the staircase wall 16, and a frame 23 is fitted into the through-hole 22. A step 26 extends through the inside of the frame 23. The end 26a of the step 26 on the bearing wall 13 side is held by square members 24, 25 provided to the bearing wall 13. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a staircase structure provided in a building.

  In buildings with upper and lower floors, stairs are installed in the up-and-down area that goes back and forth between the upper and lower floors. As a kind of staircase, a cantilever type staircase in which a tread is cantilevered on a staircase wall is known. In the cantilevered staircase, since it becomes necessary to maintain the supporting strength of the tread board, one end of the tread board is rigidly joined to the stair wall, for example, a tread board is integrally provided on the RC stair wall.

However, depending on the type of building, RC staircase walls cannot always be used. For example, a large siding girder is used to support the tread, or as shown in Patent Document 1, it is supported on the staircase wall. Other measures are also taken, such as attaching an angle and covering the supporting angle with a tread box.
Japanese Patent Laid-Open No. 2006-200743

  However, in the above conventional staircase structure, in order to obtain sufficient support strength, a complicated mechanism is exposed at the joint portion between the staircase wall and the tread board, and it was adopted to improve the appearance of the cantilevered staircase. Regardless, it looked bad.

  This invention is made | formed in view of such a situation, and makes it the main objective to provide the attractive staircase structure.

  Furthermore, in the age of aging, from the viewpoint of safety, the tread surface and the lift area should be brightened, and from the viewpoint of the living environment, the temperature environment of the lift area where no dedicated air conditioner is installed can be improved. It has become a problem in the staircase structure. Another object of the present invention is to provide a staircase structure that can brighten the lift area and improve the temperature environment of the lift area.

  In order to solve the above-mentioned problem, in the first invention, a face material is provided on a side portion of the lift area between the upper and lower floors, and is formed on the face material that connects the upper and lower floors. A plurality of through-holes penetrating to the side opposite to the lifting / lowering region located on the opposite side of the lifting / lowering region, and being inserted into the through-hole, and extending so that one part is disposed in the lifting / lowering region and the other part is disposed in the non-lifting / lowering region. A plurality of treads, a first support part that is provided in the face material and supports the tread in the through hole or in the vicinity of the through hole, and a tread that protrudes toward the anti-lifting region side with the face material interposed therebetween, And a second support portion that supports the material at a position separated from the material toward the side opposite to the lifting / lowering region.

  According to 1st invention, a tread is supported by the 1st support part provided in the face material, and the 2nd support part spaced apart from the face material to the reverse raising / lowering area | region side. As a result, even in a cantilevered staircase, a complicated mechanism is not exposed at the joint portion between the face material and the tread. Moreover, the support part of a tread can be increased by employ | adopting the said staircase structure of this invention for at least one of the both ends of a tread. Thereby, the structural burden of the face material which connects the upper and lower floors can be reduced. Thereby, the appearance of the joining part of a tread board and a face material can be improved, and by extension, the appearance of a raising / lowering area | region can be improved.

  In the first invention, it is preferable that the tread includes a base material and a finishing material formed on the surface exposed to at least the lifting region of the base material (second invention). . If comprised in this way, the design property can be improved with a finishing material, ensuring the intensity | strength as a tread with a base material.

  In 3rd invention, the light guide part which guides the light of the anti-elevating / lowering area side to the raising / lowering area side is formed in the face material. If comprised in this way, the light of a non-elevating area side will be guide | induced to the raising / lowering area side by a light guide part, and the raising / lowering area will be illuminated. In this case, it is possible to suppress the deterioration of the appearance of the lift area associated with the installation of the staircase illumination.

  It is known that stair lighting for illuminating each step tread is provided with a light source for each tread. In this case, the man-hour for installing the light source for each tread and the man-hour for wiring to these light sources is required. However, the construction of the staircase lighting becomes complicated. In this regard, in the third aspect of the invention, if the anti-elevating area is illuminated with a light source smaller than the number of steps on the staircase, and the light on the anti-elevating area side is guided to the elevating area side by the light guide, It is possible to reduce the number of lighting devices and, in turn, the man-hours required for the construction of staircase lighting. Furthermore, light from a light source (such as sunlight or illumination mainly used for another purpose) different from the light source for staircase illumination can be guided to the ascending / descending region side by the light guide unit.

  According to a fourth invention, in any one of the first to fourth inventions, a second face material is provided at a position spaced from the face material to the side opposite to the lifting / lowering region side so as to face the face material. A second support portion is provided on the face material.

  According to the fourth invention, there is an advantage that the required strength is low for both the face material and the second face material. Moreover, in the fourth invention, a space is formed between the face material and the second face material. Therefore, the space between both walls can be used for various purposes.

  For example, in the fifth aspect, the portion of the tread board that is disposed in the space between the face material and the second face material is a shelf board or a receiving part of the shelf board. In this case, the space between both walls can be effectively used as a shelf installation space. Here, the shelf includes a storage shelf and a display shelf.

  As another application, in the sixth invention, the space between the face material and the second face material is a facility space that connects the upper and lower floors. In this case, a water supply pipe, a drain pipe, a gas pipe, and electrical wiring can be accommodated in the space between both walls. In particular, when the sixth invention is applied to a straight staircase, the space between both walls extends from the floor surface of the lower floor to the ceiling surface. In this case, the water supply pipe, the drain pipe, the gas pipe, and the electrical wiring can be passed through the upper and lower floors by effectively utilizing the space between both walls.

  Here, in the building, as the warm air rises and the cold air descends, the temperature of the upper part becomes higher. This may cause discomfort to the residents. In particular, since the up-and-down area where the resident moves up and down is an area connected to the upper and lower floors, the difference in temperature between the upper and lower sides becomes conspicuous, which may cause discomfort to the resident.

  In this regard, in the seventh invention, the upper opening formed on the face material and opened to the lifting / lowering area side and provided on the counter-lifting / lowering area side, the air on the lifting / lowering area side is sucked through the upper opening, First air blower that blows out the air to the lift area side below it, a lower opening that is formed at the lower part of the face material and that opens to the lift area side, and that is provided on the counter lift area side, through the lower opening And a second air blowing section that sucks air on the lift area side and blows the sucked air to the lift area side above it.

  According to the seventh aspect of the invention, the air in the upper part of the lift area is supplied downward by the first blower, and the air in the lower part of the lift area is supplied upward by the second blower. Thus, the temperature difference between the upper and lower regions of the lift region can be reduced. Thereby, the change of the occupant's sensible temperature accompanying the raising / lowering of a staircase can be reduced.

  In particular, when the face material extends from the floor surface of the lower floor to the ceiling surface of the upper floor, the upper opening is formed near the ceiling surface of the upper floor, and the lower opening is formed near the floor surface of the lower floor. It is preferable to form. In this case, since the temperature of the air near the ceiling surface of the upper floor is the highest and the temperature of the air near the floor surface of the lower floor is the lowest in the lifting region, By supplying the air below the air and supplying the air near the floor surface of the lower floor upward by the second air blowing unit, the change in the sensible temperature can be effectively reduced.

  In addition, if the space between the face material and the second face material shown in the fourth invention is used as the installation space for both the air blowing units, the appearance of the lifting / lowering area side becomes worse with the installation of both air blowing units. There is nothing.

  According to an eighth aspect, in the seventh aspect, both of the air blowing sections are provided with outlets for opening air to the up-and-down region side in the face material and blowing out air on each tread.

  According to the eighth aspect of the invention, the temperature of the upper surface (tread surface) of each tread can be made comfortable by blowing the air sucked through the upper opening and the lower opening onto each tread from the outlet. it can. In particular, the temperature of the upper surface of each tread can be effectively adjusted by blowing air from the outlet provided in the face material, that is, from the vicinity of each tread.

(First embodiment)
The first embodiment will be described below with reference to the drawings. FIG. 1 is a perspective view showing an outline of the building 10.

  The building 10 is a multi-storey building, and is provided with stairs 20 that can be moved up and down. In the present embodiment, load bearing walls 11, 12, 13, and 14 are erected in the building 10. The load-bearing walls 11 to 14 are configured to include vertical members and cross members disposed at predetermined intervals. And the living room 15 is partitioned off by the bearing walls 11-14, and the living room 15 is formed in this embodiment. In the living room 15, a staircase wall 16 that faces the load bearing wall 13 is erected at a position separated from the load bearing wall 13. The staircase wall 16 as a face material includes vertical members and cross members similarly to the load-bearing wall 13. A tread plate 26 for the stairs 20 is provided on the stairs wall 16.

  The stairs 20 is a turn-up stairs. In the part (upper part) from the upper floor to the landing 21 in the stairs 20, a double-supported stairs structure is adopted. That is, a step board (not shown) is passed between the staircase wall 16 and the load bearing wall 13 and fixed to the walls 13 and 16 in a stepped manner.

  On the other hand, a cantilevered staircase structure is adopted in a portion (lower part) of the staircase 20 from the landing 21 to the floor 15a of the living room 15. In the lower part of the staircase 20, a region on the opposite side of the load bearing wall 13 across the staircase wall 16 is a lifting space S <b> 1.

  Hereinafter, the lower part of the stairs 20 will be described with reference to FIGS. 1 and 2. 2, (a) and (b) are a longitudinal sectional view and a transverse sectional view in the vicinity of the step plate in the second step from the bottom of the step plates at the bottom of the stairs 20, respectively.

  In the staircase wall 16 shown in FIG. 2, a rectangular through hole 22 is formed penetrating from the lift space S1 side to the opposite side of the lift space S1 with the staircase wall 16 interposed therebetween. The through hole 22 is arranged so that the inner wall on the lower side and the upper surface of the cross member of the staircase wall 16 are located on the same horizontal plane. A frame body 23 is fitted into the through hole 22 and is fixed by a fixing means such as a nail, a screw, or a bolt. Thereby, the lower part of the frame 23 is supported by the cross member of the staircase wall 16.

  Square members 24 and 25 are horizontally extended in the load bearing wall 13. The square member 24 is arranged so as to be aligned in the horizontal direction with the cross member of the load bearing wall 13 slightly above the horizontal position of the through hole 22. The square member 25 is arranged in parallel with the transverse member of the load bearing wall 13 slightly below the horizontal position of the through hole 22. The vertical spacing between the square members 24 and 25 is larger than the thickness of the tread plate 26. The square members 24 and 25 are fixed to the cross member of the load-bearing wall 13 by fixing means such as nails, screws, and bolts. Thereby, both the square members 24 and 25 are supported by the cross member of the bearing wall 13.

  A tread plate 26 passes through the inside of the frame body 23. The end 26a opposite to the lifting space S1 across the staircase wall 16 of the tread 26 is sandwiched between square members 24 and 25. Thereby, the tread 26 is supported by the frame body 23 and the square members 24 and 25. In this case, the frame body 23 corresponds to the “first support portion”, the square members 24 and 25 correspond to the “second support portion”, and the load bearing wall 13 corresponds to the “second face member”.

  The step board 26 includes a base material 27 and a finishing material 28. The base material 27 is a long plate material, and is formed of a strong material (for example, metal) to ensure the strength as the tread plate 26. The finishing material 28 is slightly larger than the portion of the base material 27 exposed from the staircase wall 16 to the lifting space S <b> 1, and a fitting groove 28 a with the base material 27 is formed in the lower portion of the finishing material 28. Then, the finishing material 28 is fitted into the upper portion of the base material 27 and fixed by a fixing means such as a screw or an adhesive. As a result, the upper surface of the base material 27 is covered with the finishing material 28, and the upper surface of the finishing material 28 is a tread surface 29.

  A handrail 30 is provided below the stairs 20 (see FIG. 1). In the present embodiment, support columns 31 to 33 are erected on the bottom plate 26, the landing 21 and the like, respectively. Specifically, a bolt hole is formed in the lower end portion 31a of the column 31 in the longitudinal direction. And the support | pillar 31 is fastened with the edge part 27a by the raising / lowering space S1 side of the base material 27 with the volt | bolt. Bolt holes are also formed in the columns 32 and 33 as in the column 31. The struts 32 and 33 are fastened to the landing 21 with bolts (see FIG. 1). A handrail bar 34 is passed to the columns 31 to 33.

  By the way, in the staircase structure adopted in the lower part of the staircase 20 described above, the inter-wall space S2 is formed between the staircase wall 16 and the bearing wall 13. Therefore, when this staircase structure is adopted, it is preferable to effectively use the inter-wall space S2.

  Therefore, in the present embodiment, the shelf board 35 is provided in a portion of the base material 27 exposed from the staircase wall 16 to the inter-wall space S2. Specifically, the shelf board 35 is wider than the width of the base material 27 in the short direction, and a fitting groove with the base material 27 is formed in the lower part thereof. And the shelf board 35 is inserted in the upper part of the base material 27, and is being fixed with the screw | thread or the adhesive agent. The shelf board 35 is sandwiched by the square members 24 and 25 together with the base material 27. Thereby, the space S2 between walls is effectively used as a storage shelf.

  In the present embodiment, a partition wall 36 that partitions the front side of the storage shelf and the rear side of the storage shelf of the space S2 between the walls is provided at a position convenient for use as a storage shelf due to the height and depth of the space S2 between the walls. Yes. The space on the near side of the inter-wall space S2 is used as the storage shelf. In this case, the space on the back side of the space S2 between the walls may be used as another storage shelf for taking in / out the storage items from the side opposite to the storage shelf, or as a use other than the storage shelf, for example, as pipe space May be used.

  Next, the construction method of the lower part of the stairs 20 will be described. In the construction of the lower part of the staircase 20, first, the through hole 22 is formed in the staircase wall 16, and the frame body 23 is fitted into the through hole 22 of the staircase wall 16. Further, only the lower square member 25 of the two square members 24 and 25 is fixed to the bearing wall 13. Next, the base material 27 is passed through the staircase wall 16 through the inside of the frame body 23. At this time, the tread 26 can be stabilized by hanging the end of the base material 27 on the bearing wall 13 side on the square member 25.

  Next, the shelf board 35 is fixed to a portion of the base material 27 exposed from the staircase wall 16 to the inter-wall space S2, and the inter-wall space S2 of the base material 27 together with the end of the shelf board 35 on the bearing wall 13 side. The upper square member 24 is fixed to the load-bearing wall 13 with the end portion on the side sandwiched between the square members 24 and 25.

  Next, the finishing material 28 is fixed to a portion of the base material 27 exposed from the staircase wall 16 to the lifting space S1. Next, the support column 31 of the handrail 30 is fixed to the end portion 27 a of the base material 27 on the lift space S <b> 1 side, and the support columns 32 and 33 are fixed to the landing 21. Then, the handrail bar 34 is attached to the columns 31 to 33.

  All or any of the above-described step of forming the through hole 22, the step of fitting the frame body 23 into the through hole 22, and the step of fixing the square member 25 to the load bearing wall 13 is performed at the factory. The staircase wall 16 and the load bearing wall 13 may be carried into the construction site. Thereby, the work at the construction site can be simplified.

  When the present invention is applied to a cantilevered staircase as in the lower portion of the staircase 20 described above, the tread 26 is provided on the frame body 23 provided on the staircase wall 16 and the square members 24 and 25 provided on the load bearing wall 13. Is supported by In this case, the load applied to the portion of the tread 26 that is exposed from the staircase wall 16 to the lifting space S <b> 1 is distributed to the staircase wall 16 and the load bearing wall 13 and applied to both walls 13 and 16. That is, when a load is applied to the portion of the tread 26 that is exposed from the staircase wall 16 to the elevating space S1, a downward force is applied to the staircase wall 16 through the frame body 23, and the upper square member is applied to the load-bearing wall 13. An upward force is applied via 24.

  With the above configuration, the following advantageous effects can be obtained.

  In the lower part of the stairs 20, the load applied to the portion of the tread plate 26 exposed from the stairs wall 16 to the lifting space S <b> 1 is distributed to the stairs wall 16 and the load bearing wall 13 and applied to both walls 13 and 16. Thereby, the intensity | strength requested | required of the staircase wall 16 can be reduced. Further, each tread plate 26 can be provided on the staircase wall 16 without exposing a complicated mechanism at the joint portion between each tread plate 26 and the staircase wall 16. Accordingly, it is possible to improve the appearance of the joint portion between each tread plate 26 and the staircase wall 16, and consequently improve the appearance of the elevating space S <b> 1.

  Since the tread 26 is composed of the base material 27 and the finishing material 28, the finishing material 28 can bear a portion that enhances the designability while placing the strength on the base material 27. Further, the shelf plate 35 wider than the base material 27 is held by the square members 24 and 25 together with the base material 27. Therefore, the load applied to the base material 27 is distributed in the short direction of the base material 27 via the shelf plate 35 and the square members 24 and 25 and applied to the load bearing wall 13. Thereby, the local intensity | strength requested | required of the bearing wall 13 can also be reduced.

(Second Embodiment)
The second embodiment is a modification of the first embodiment. In the second embodiment, the present invention is applied to a spiral staircase. Hereinafter, this spiral staircase will be described with reference to FIGS. 3 and 4. FIG. 3 is an explanatory diagram showing a schematic configuration of the spiral staircase. 4, (a) is a cross-sectional view of the spiral staircase on the top surface (see line A1-A1) of the fourth step plate from the bottom of FIG. 3, and (b) is the spiral staircase along line A2-A2 of (a). FIG. In FIG. 4A, illustration of the treads from the bottom to the third step is omitted. In the description of the present embodiment, components that are substantially the same as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and description of these components is omitted.

  The staircase 220 shown in FIG. 3 includes a cylindrical staircase wall 16. And in the staircase 220, the area | region outside the radial direction of the staircase wall 16 is set as the raising / lowering space S1. As shown in FIG. 4, a support column 213 is erected on the inner side of the staircase wall 16 so as to be separated from the staircase wall 16. A recess 214 is formed in the column 213 at a portion corresponding to the through hole 22 of the staircase wall 16.

  A frame body 23 is fixed to the through hole 22, and a tread plate 26 passes through the inside of the frame body 23. An end portion 26 a on the opposite side of the elevating space S <b> 1 across the staircase wall 16 of the tread plate 26 is fitted in the concave portion 214 of the column 213. Accordingly, the tread plate 26 is supported by the frame body 23 and the recess 214. In this case, the concave portion 214 corresponds to a “second support portion”.

  The tread board 26 includes a base material 227 and a finishing material 228 as in the first embodiment. In the present embodiment, as shown in FIG. 4A, the finishing material 228 is curved so that one end 228a, which is radially inward of the staircase wall 16 in the attached state to the base material 227, is in close contact with the staircase wall 16. When attached to the base material 227, it has a fan shape that gradually becomes wider toward the other end 228 b that is the radially outer side of the staircase wall 16. In this case, the base material 227 is not elongated like the base material 27 of the first embodiment, but the portion of the base material 227 exposed from the staircase wall 16 to the lifting space S1 is the finishing material 228. It is preferable to make it a fan shape that is slightly smaller than that. Thereby, the finishing material 228 and the base material 227 can be firmly fixed.

  As described above, the staircase structure of the present invention can also be applied to a spiral staircase. Even in this case, the same advantageous effects as in the first embodiment can be obtained. The space S2 that is an internal space surrounded by the staircase wall 16 can be used for a pipe space or the like.

(Third embodiment)
The third embodiment is a specific example in which the staircase structure of the present invention is applied to a staircase with staircase illumination. Hereinafter, the steps of the third embodiment will be described with reference to FIG. FIG. 5 is an explanatory view showing stairs according to the third embodiment. In the description of the present embodiment, components that are substantially the same as those of the first embodiment are denoted by the same reference numerals as those of the first embodiment, and description of these components is omitted.

  The staircase 320 of this embodiment is a straight staircase. That is, all the treads 26 of the staircase 320 are supported by the frame body 23 and the square members 24 and 25 as well as the lower part of the staircase 20 of the first embodiment, and are provided so as to protrude from the staircase wall 16 to the lift space S1 side. ing.

  In the inter-wall space S <b> 2 between the staircase wall 16 and the bearing wall 13, an illumination device 301 that is a light source for staircase illumination is installed. In this embodiment, the illuminating device 301 is attached to the ceiling surface 302 of the inter-wall space S2. Thereby, the space S2 between walls can be illuminated.

  The staircase wall 16 is provided with a light guide portion 303 that penetrates the staircase wall 16 to the ascending / descending space S1 side and the inter-wall space S2 side. Yes. In the present embodiment, a groove 23a extending from the inter-wall space S2 to the lifting space S1 is formed on the inner wall of each frame 23 that faces the upper surface of each tread plate 26. And the light guide part 303 is engage | inserted in the groove | channel 23a of each frame 23. FIG. The light guide 303 may be a lens or an optical fiber formed of a transparent material such as glass, but the inner space (through hole) of the groove 23a itself may be used as the light guide.

  In this case, when the illumination device 301 is turned on, the inter-wall space S2 is illuminated. As a result, the light in the inter-wall space S2 is guided to the ascending / descending space S1 via the light guide portion 303, and the tread surface 29 of each tread 26 is illuminated by the light. As a result, it is possible to prevent accidents where the tread board 26 is stepped off or prevent an elderly person from falling off the stairs.

  According to the configuration described above, the following excellent effects can be obtained in addition to the advantageous effects similar to those of the first embodiment.

  The space S2 between the walls can be used as an installation space for the staircase illumination. In addition, the lighting device 301 illuminates the space S2 between the walls, and guides the light on the side of the wall space S2 to the lifting space S1 side so as to illuminate the lifting space S1. Compared with the case of providing, the number of lighting devices can be reduced. Thereby, in the construction of staircase lighting, it is possible to reduce the number of man-hours for installing the lighting device and wiring. Furthermore, when the inter-wall space S2 is used for other purposes such as storage, the illumination used there can be used as it is, so that the illumination can be shared.

(Fourth embodiment)
The fourth embodiment is a modification of the third embodiment. FIG. 6 is an explanatory diagram showing the steps of the fourth embodiment. In the description of the present embodiment, components that are substantially the same as those of the third embodiment are denoted by the same reference numerals as those of the embodiment, and description of these components is omitted.

  In the staircase 420 shown in FIG. 6, the tube light 401 is provided in the space S2 between walls. The tube light 401 is a lighting device in which a plurality of light sources are disposed in the longitudinal direction of the transparent tube in the transparent tube. The tube light 401 is disposed so as to pass through the end surface on the side of the space S2 between the light guides 303 or in the vicinity thereof. In the present embodiment, the tube light 401 is attached to the staircase wall 16. As the light source, it is preferable to employ an LED that generates a small amount of heat.

  According to the configuration described above, the same advantageous effects as those of the third embodiment can be obtained. In particular, since the tube light 401 is disposed so as to pass through the end surface of each light guide section 303 on the side of the space S2 between the walls, uneven illumination of the staircase illumination can be suppressed. Moreover, even if it is a case where a comparatively big illuminating device cannot be installed in the space S2 between walls because the distance between the staircase wall 16 and the bearing wall 13 was set small, if it is a tube light 401, it will be in the space S2 between walls. Can be installed.

(Fifth embodiment)
Generally, in a building, the warm air rises and the cold air falls, so that the temperature rises upward. This may cause discomfort to the residents. In particular, in the elevating space S1 in which the resident moves up and down between the upper and lower floors by stairs, there is a concern that the sensation temperature of the resident is greatly changed, and that the resident is uncomfortable.

  Therefore, the staircase of the fifth embodiment is provided with a blower in the inter-wall space S2 in order to reduce the temperature difference in the vertical direction of the elevating space S1.

  Hereinafter, the steps of the fifth embodiment will be described with reference to FIG. FIG. 7 is an explanatory diagram illustrating the steps 520 of the fifth embodiment.

  The staircase 520 of this embodiment is a straight staircase as in the third embodiment. Therefore, in the description of the present embodiment, the same reference numerals as those of the third embodiment are given to substantially the same components as those of the third embodiment, and the description of these components is omitted.

  A lower air supply port 502 that penetrates the staircase wall 16 to the ascending / descending space S1 side and the inter-wall space S2 side is formed slightly above the floor surface 501 of the interwall space S2 of the staircase wall 16. An upper air supply port 503 that penetrates the staircase wall 16 to the ascending / descending space S1 side and the inter-wall space S2 side is formed slightly below the ceiling surface 302 of the interwall space S2 of the staircase wall 16. A portion of the staircase wall 16 above the lower air inlet 502 and below the upper air inlet 503 (intermediate portion) blows through the staircase wall 16 to the ascending / descending space S1 side and the inter-wall space S2 side. Ports 504 to 509 are formed. In the present embodiment, the outlets 504 to 509 are formed slightly above the through holes 22 of the staircase wall 16.

  A space 510 between the walls is provided with a duct 510 that connects the air supply ports 502 and 503 and the air outlets 504 to 509. The duct 510 has a first duct 511 and a second duct 512. Both ends of the first duct 511 are connected to the air supply ports 502 and 503. The second duct 512 includes an end portion 511a on the lower air inlet 502 side of the first duct 511, outlets 504 to 509 from the lowermost outlet 504 to the uppermost outlet 509, and the first duct. The end portion 511b on the upper air supply port 503 side of 511 is connected in this order.

  A lower fan 513 for sucking air (cold air) in the lower part of the lift space S1 into the duct 510 is provided in the lower air supply port 502, and air in the upper part of the lift space S1 (in the upper air supply port 503). An upper fan 514 for sucking warm air into the duct 510 is provided. A lower opening / closing valve 515 is provided at an end portion 512a on the lower air inlet 502 side of the second duct 512, and an upper opening / closing valve 516 is provided on an end portion 512b on the upper air inlet port 503 side of the second duct 512. It has been. The operations of the fans 513 and 514 and the on-off valves 515 and 516 can be controlled automatically or manually.

  When the upper fan 514 is rotated, the lower on-off valve 515 is opened, and the upper on-off valve 516 is closed, the air (warm air) above the ascending / descending space S1 is sucked into the duct 510 through the upper air supply port 503. The sucked air is blown out from the duct 510 to the lift space S1 through the blowout ports 504 to 509. In this case, the upper fan 514, the duct 510, and the outlets 504 to 509 correspond to the “first blower”.

  When the lower fan 513 is rotated, the upper on-off valve 516 is opened, and the lower on-off valve 515 is closed, the air (cold air) in the upper part of the elevating space S1 enters the duct 510 through the lower air inlet 502. Inhaled and sucked air is blown out from the duct 510 to the ascending / descending space S1 through the outlets 504 to 509. In this case, the lower fan 513, the duct 510, and the outlets 504 to 509 correspond to the “second blower”.

  According to the blower described above, by supplying the upper air (warm air) or the lower air (cold air) below or above the ascending / descending space S1 as described above, the temperature difference in the vertical direction of the ascending / descending space S1 is increased. It is possible to reduce the change in the temperature of the occupant's sensation as the stairs 520 are moved up and down. Further, it is possible to reduce the temperature difference in the vertical direction of the living room 15 where the lifting space S1 is set.

  In particular, the outlets 504 to 509 are set on the tread board 26. Therefore, the temperature of the tread surface 29 can be made comfortable by supplying the upper air (warm air) or the lower air (cold air) of the elevating space S1 onto the tread plate 26 as described above.

  Here, air (cold air) sucked into the duct 510 through the lower air supply port 502 flows upward from the upper air supply port 502. Therefore, it is considered that the temperature of the air rises as the path in the duct 510 from the lower air supply port 502 to each of the air outlets 504 to 509 becomes longer. In this respect, in the duct 510, in the state where the upper on-off valve 516 is opened and the lower on-off valve 515 is closed as described above, the path in the duct 510 is shortened as the path to the upper outlet. It is set. Thereby, air whose temperature is lower can be supplied toward the upper side of the lifting space S1.

  On the other hand, air (warm air) sucked into the duct 510 through the upper air supply port 503 flows below the upper air supply port 503. Therefore, it is considered that the temperature of the air decreases as the path in the duct 510 from the upper air supply port 503 to each of the air outlets 504 to 509 becomes longer. In this regard, in the duct 510, in a state where the lower on-off valve 515 is opened and the upper on-off valve 516 is closed as described above, the path in the duct 510 is shortened as the path to the lower outlet. Is set. Thereby, air with a high temperature can be supplied to the lower part of the elevating space S1.

  Therefore, for example, air (warm air) sucked into the duct 510 through the upper air supply port 503 in the winter is circulated from the lower side to the upper side, and the air is supplied to the ascending / descending space S1. While the air (cold air) sucked into 510 is circulated from the upper side to the lower side, the air is supplied to the elevating space S1, so that the temperature of the elevating space S1 and the living room 15 and the temperature of the tread surface 29 are more comfortable. Can be.

  According to the configuration described above, the same advantageous effects as those of the first embodiment can be obtained. In particular, since the inter-wall space S2 is used as an installation space for the blower, it is possible to suppress the deterioration of the appearance of the stairs 520 associated with the installation of the blower described above.

(Other embodiments)
The present invention is not limited to the embodiments described above, and may be implemented in the form shown as another example below.

  (1) The present invention can be applied not only to a cantilevered staircase but also to a cantilevered staircase. For example, a partition wall facing the staircase wall 16 is provided on the opposite side to the load-bearing wall 13 across the staircase wall 16, and the end of the tread plate 26 on the up and down space S1 side is supported by a support portion provided on the partition wall. It is possible to do. Even in this case, the strength required for the staircase wall 16 can be reduced by distributing the load applied to the tread surface 29 to the staircase wall 16 and at least one of the load bearing wall 13 and the partition wall.

  (2) In each of the above embodiments, the frame body 23 is provided in the through hole 22 of the staircase wall 16 to form the first support portion. However, the present invention is not limited to this. For example, the frame body may not be provided in the through hole 22, and the inner wall of the through hole 22 may be used as the first support portion. A support fitting or the like may be provided around the through hole 22 on the side wall surface to serve as the first support portion.

  (3) In each of the above embodiments, the upper surface of the base material 27 is covered with the finishing material 28, but the entire surface of the base material 27 may be covered with the finishing material 28. Thereby, not only the surface of the tread board 26 but also the design of the back surface can be enhanced. In particular, in the cantilever type stairs, the lower side of the tread 26 is opened to improve the appearance, so the design of the back surface of the tread 26 is also important. In this respect, it is significant to improve the design of the back surface of the tread plate 26 as described above.

  (4) The space S2 between the walls may be a shelf as in the first embodiment, and may be used as an installation space for the staircase illumination device as in the third embodiment or the fourth embodiment. In this case, the staircase illumination device can also be used as a shelf illumination device.

  Moreover, while setting it as the installation space of a stair illuminating device like 3rd Embodiment and 4th Embodiment, you may utilize as space of an air blower like 5th Embodiment. In this case, the through hole for the light guide (see the groove 23a in FIG. 5B) and the blower outlets (see the blowout openings 504 to 509 in FIG. 7) formed in the staircase wall 16 are made common. be able to. For example, while using the internal space of the groove part 23a of 3rd Embodiment and 4th Embodiment as a light guide part, the said groove part 23a can be made into a blower outlet.

  (5) You may comprise the tread unit which connected the some tread 26 as one unit. Thereby, compared with the case where each tread board 26 is provided in the staircase wall 16 individually, the man-hour reduction at the time of stairs construction can be aimed at.

  (6) The space S2 between the walls may be used as a pipe space (equipment space) for housing a water supply pipe, a drain pipe, a gas pipe, and electrical wiring. In this case, the water supply pipe, the drain pipe, the gas pipe, and the electric wiring can be accommodated in the inter-wall space S2. In particular, when the inter-wall space S2 extends from the floor surface of the lower floor to the ceiling surface as in the second to fifth embodiments, a water supply pipe, a drain pipe, and a gas pipe are effectively used by using the inter-wall space S2. Electrical wiring can be passed up and down.

  (7) In the said 1st Embodiment, the shelf board 35 was provided in the part exposed to the space S2 from the staircase wall 16 of the tread 26. FIG. That is, although the tread 26 is used as the receiving portion of the shelf 35, the tread 26 itself may be used as the shelf 35.

  (8) In 3rd, 4th embodiment, the light source (illuminating device 301, the tube light 401) for stairway illumination was installed in the space S2 between walls. However, the present invention is not limited to this, and as a light source different from the light source for staircase illumination, for example, sunlight may be guided to the ascending / descending space S1 side by the light guide unit.

  (9) In the fifth embodiment, the upper air supply port 503a may be formed slightly below the ceiling surface 517 of the upper floor in the staircase wall 16, and the upper fan 514a may be provided in the upper air supply port 503a. (See FIG. 7). In this case, it is necessary to change the piping of the duct 510 as described below. That is, by dividing the inter-wall space S2 by the ceiling material on the upper floor rather than the ceiling material on the lower floor or the floor material on the upper floor, the space S2 between the walls is extended from the ceiling surface 302 on the lower floor to the ceiling surface 517 on the upper floor. Expand. And the duct 510 is piped in the expanded space S2 between walls. When the inter-wall space S2 cannot be expanded as described above, a part of the duct 510 is piped outside the inter-wall space S2 (on the floor surface of the upper floor). Nevertheless, the configuration in which the upper air supply port 503a and the upper fan 514a are provided in the vicinity of the ceiling surface 517 as described above is preferable in that the temperature difference in the vertical direction of the elevating space S1 can be further reduced. That is, in the elevating space S1 of the fifth embodiment, the temperature of the air near the ceiling surface 517 on the upper floor is the highest. Therefore, by supplying the air near the ceiling surface 517 on the upper floor downward in the lift space S1, the temperature difference in the vertical direction of the lift space S1 can be further reduced.

  (10) In the fifth embodiment, a blowout port (first blowout port) that blows out air sucked through the lower air supply port 502 and a blowout port (second blowout port) that blows out air sucked through the upper air supply port 503 are provided. While providing each separately, you may provide separately the duct which connects the lower air supply opening 502 and a 1st blower outlet, and the duct which connects the upper air supply opening 503 and a 2nd blower outlet, respectively. In this case, the piping of the duct is considered to be complicated, but the on-off valves 515 and 516 of the fifth embodiment are not required.

  (11) In each of the above embodiments, the staircase wall 16 is a “face material” that connects the upper and lower floors. However, the present invention is not limited to this, and it is also possible to adopt a sword as a face material.

  For example, as shown in FIG. 8, a first counter beam 601 corresponding to the staircase wall 16 and a second counter beam 602 corresponding to the load-bearing wall 13 may be provided. In the staircase shown in FIG. 8, a through hole similar to the through hole 22 in the staircase wall 16 is formed in the first counter girder 601, and the frame body 23 is provided in the through hole 22. The second counter beam 602 is erected so as to face the first counter beam 601 at a position spaced from the first counter beam 601. The tread 26 is inserted into the frame body 23, one end is disposed on the second counter beam 602 side with the first counter beam 601 sandwiched therebetween, and the other end is the second counter beam 602 with the first counter beam 601 interposed therebetween. It extends so as to be arranged on the opposite side (on the side opposite to the second counter girder). The end portion of the tread plate 26 on the second counter beam 602 side is fitted in a recess 602 a formed in the second counter beam 602. Between the first and second spars 601 and 602, the lower floor side joining material 605 that joins both spars slightly above the floor surface 610 of the lower floor, and the floor surface 611 of the upper floor slightly. An upper floor side joining material 606 for joining the two spar girders below is provided. Similarly to the fourth embodiment, the light guide 303 is provided in the first counter beam 601, and the tube light 401 is disposed in the space S <b> 2 between the first counter beam 601 and the second counter beam 602. Yes.

  Moreover, as shown to Fig.9 (a), in the staircase shown in FIG. 8, you may provide the 3rd counter beam 603 which supports the edge part by the side of the anti-second counter beam of the tread plate 26. As shown in FIG. In the stairs shown in FIG. 9A, the third counter beam 603 is erected so as to face the first counter beam 601 at a position spaced from the first counter beam 601 to the second counter beam side. . The end portion of the tread plate 26 on the side of the third counter girder 603 is fitted into a recess 603 a provided in the third counter girder 603.

  Further, as shown in FIG. 9B, in the staircase shown in FIG. 9A, a fourth counter beam 604 corresponding to the first counter beam 601 may be provided on the third counter beam 603 side. In the stairs shown in FIG. 9B, a through hole similar to the through hole 22 of the first counter girder 601 is formed in the fourth counter girder 604, and the frame body 23 is provided in the through hole 22. . The lower floor side bonding material 607 and the upper floor side bonding material 608 that are the same as the lower floor side bonding material 605 and the upper floor side bonding material 606 described above are provided between the third and third floor beams 603. ing. Similarly to the fourth embodiment, the light guide 303 is provided in the fourth counter beam 604, and the tube light 609 is disposed in the space S3 between the third counter beam 602 and the fourth counter beam 604. Yes.

  According to the staircase structure shown in FIG. 8, a cantilever type stair unit with built-in stair lighting can be configured, and according to the staircase shown in FIGS. The staircase unit can be configured. Thereby, in an existing building, it is possible to renovate the existing staircase to a staircase that can brightly illuminate the tread surface 29 and the lift area without significantly changing the structure. In these cases, the recesses 602a and 603a correspond to “second support portions”.

  (12) In the stairs 320 and 420 (see FIGS. 5 and 6) of the third and fourth embodiments, the tread 26 may be supported only by the staircase wall 16 so that the tread 26 is not exposed in the inter-wall space S2. . Further, in the staircase (see FIGS. 8 and 9) of the other embodiment (11) described above, the tread plate 26 is moved to the first counter girder 601 and the fourth counter so that the tread plate 26 is not exposed in the spaces S2 and S3 between the counter girder. You may make it support only by the further beam 604. FIG. According to the modification of the third embodiment, light from the lighting device 301 is not blocked by the tread plate 26. Thereby, the tread board surface 29 and the raising / lowering space S1 can be effectively illuminated with the light of the illuminating device 301. Moreover, according to the modification of the said 4th Embodiment and the modification of the said other embodiment (11), it is not necessary to detour the tread 26 in the routing of a tube light. Thereby, the tube light can be routed satisfactorily.

The perspective view which shows the outline | summary of the building which concerns on 1st Embodiment. Sectional drawing which shows the structure of the lower part of stairs. Explanatory drawing which shows the outline | summary of the staircase concerning 2nd Embodiment. Sectional drawing which shows the structure of the staircase. Explanatory drawing which shows the staircase of 3rd Embodiment. Explanatory drawing which shows the staircase of 4th Embodiment. Explanatory drawing which shows the staircase of 5th Embodiment. Explanatory drawing which shows the staircase of other embodiment. Explanatory drawing which shows the staircase of other embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 13 ... Bearing wall (2nd surface material), 16 ... Staircase wall (surface material), 22 ... Through-hole, 23 ... Frame (1st support part), 24, 25 ... Square material (2nd support part), 26 ... Tread board, 27 ... base material, 28 ... finish material, 35 ... shelf board, 214 ... recess (second support part), 303 ... light guide part, 502 ... lower air supply port (lower opening part), 503 ... upper air supply Mouth (upper opening), 504 to 509... Outlet, 513... Lower fan (second air blower), 514... Upper fan (first air blower).

Claims (8)

Standing on the side of the lift area between the upper and lower floors, and a face material connecting the upper and lower floors,
A plurality of through-holes that are formed in the face material and penetrate from the lifting region side to the counter lifting region side that is located on the opposite side of the lifting region across the face material;
A plurality of treads that are inserted through the through-holes and extend so that one part is disposed in the lift region and the other part is disposed in the anti-lift region;
A first support that is provided on the face material and supports the tread in the through hole or in the vicinity of the through hole;
A second support portion for supporting the tread plate protruding toward the anti-elevation region side across the face material at a position spaced from the face material toward the anti-elevation region side;
A staircase structure characterized by comprising:   The staircase structure according to claim 1, wherein the tread includes a base material and a finishing material formed on a surface of the base material exposed at least in the lifting region.   The staircase structure according to claim 1 or 2, wherein the face material is formed with a light guide portion that guides light on the anti-elevating region side to the elevating region side. A second face material erected to face the face material at a position spaced from the face material to the side opposite to the lifting / lowering region;
The staircase structure according to any one of claims 1 to 3, wherein the second support member is provided on the second face material.   The step structure according to claim 4, wherein a portion of the tread board that is disposed in a space between the face material and the second face material is a shelf board or a receiving part of the shelf board.   The staircase structure according to claim 4, wherein a space between the face material and the second face material is a space for equipment connecting the upper and lower floors. An upper opening formed at the top of the face material and opening to the elevation region side;
A first air blower that is provided on the anti-elevating region side, sucks air on the lifting region side through the upper opening, and blows the sucked air to the lifting region side below it;
A lower opening formed at a lower portion of the face material and opening to the lifting region side;
A second air blower that is provided on the side opposite to the lifting / lowering region, sucks air on the lifting / lowering region side through the lower opening, and blows the sucked air to the lifting / lowering region side above it;
The staircase structure according to any one of claims 1 to 6, further comprising:   8. The staircase structure according to claim 7, wherein both the air blowing portions are provided with a blow-out opening that opens to the up-and-down region side in the face material and blows out air on each of the treads.

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