JP4363248B2 - Stair structure - Google Patents

Description

The present invention relates to a staircase structure installed in a residential building.

  Conventionally, as a staircase installed in a residential building, there are steel and wooden stairs.

  Of these, the steel staircase is heavy, so the steel stair frame is first installed together with the steel beam and column during the construction of the frame. Construction was completed by providing step boards on the stair frame or finishing materials.

  Also, in the case of wooden stairs, the stairs themselves are wooden, and it is not necessary to provide finishing materials on the surface like steel stairs, so the construction of the stairs is completed at once during interior construction work. It was.

Furthermore, recently, an assembling-type staircase using aluminum in which a plurality of step plate members are fixed between a pair of side beam members has been proposed.
JP 2002-155608 A

  However, since the conventional steel staircase is heavy, it is necessary to install the staircase frame at the same time when carrying the steel beam or steel column of the frame with a crane, and then finish the interior work. This must be done, and the construction work becomes troublesome. Further, during this interior work, curing of the corrugated board stuck on the staircase frame must be performed, and efficient construction cannot be performed. In addition, because it is made of steel, material costs and handling costs increase, and there are many handmade elements, making it difficult to reduce mass production and delivery time.

  In addition, in the case of wooden stairs, it is difficult to ensure sufficient strength compared to steel stairs, so it is as simple as a see-through stairs with multiple steps on one main material. It is difficult to construct the staircase of the design, resulting in a disadvantage that the design of the staircase is limited. In addition, there are many places to screw or nail during interior construction, which increases construction costs.

  Furthermore, in the case of the conventional aluminum assembly-type staircase, a plurality of step plate members must be bolted between the pair of side beam members, respectively, so that the assembly is troublesome and the number of construction steps increases. Further, since the step board itself is made of aluminum, a sufficient texture cannot be obtained, and it becomes cheap when used for a staircase in a residential building.

This invention is made | formed in view of the situation which concerns, Comprising: It aims at providing the step structure which was able to construct efficiently and was excellent in design property at low cost.

The staircase structure of the present invention for solving the above-described problem is designed to be fixed to a beam by fixing with a bolt, and in this fixed state, a bolt fixing surface is formed outside the beam and locked from the bolt fixing surface. A floor mounting plate and a second floor mounting plate are provided at both ends of a beam fixing plate with protruding pieces and an extruded aluminum long hollow pillar, and a locking hole is drilled in the second floor mounting plate. one of the main material comprising Te, and aluminum stair receiving and stair treads receiving surface is provided et the abutting surface and the step plate is fixed which is abutted on a hollow pillar of the main material, The beam fixing plate is bolted to the side of the beam so that the bolt fixing surface is provided outside the beam, and the beam fixing plate is fixed to the step plate receiving surface of the step plate receiving. Of the bolt fixing surface, at least engage with the nut In a state in which bets are exposed, is coated finish and cross the surface of the beam, to the exposed locking piece, in a state where engagement holes formed in the second floor mounting plate of the main member is locked, the floor mounting The plate is fixed on the floor plate, the second floor mounting plate is fixed to the bolt fixing surface of the beam fixing plate, and the step plate holders are fixed at predetermined intervals on the main hollow column material. The plate is fixed .

  The main material is an extruded aluminum hollow column material, and an insertion portion that can be inserted into the floor side end of the hollow column material is vertically integrated with the plate plate. A floor mounting plate adapted to be bolted from the outside of the hollow column material in a state of being inserted into the floor side end portion of the hollow column material, and an insertion portion that can be inserted into the second floor side end portion of the hollow column material, The locking piece is erected and integrated with a plate plate having a locking hole that can be locked, and the insertion portion is inserted from the outer side of the hollow column member in a state of being inserted into the second floor side end portion of the hollow column member. It may consist of a second floor mounting plate adapted to be bolted.

  Further, the corrugated plate receiver is formed in a hollow cylindrical shape having an abutting surface that is in contact with the main material and a corrugated plate receiving surface to which the corrugated plate is fixed, and on the rear projection surface of the corrugated plate receiving surface, Both ends of the step plate receiver are tapered so that the bolt insertion holes for fixing the step plate are exposed, and the bolts of the step plate to the step plate receiver can be easily fixed. Also good.

  As described above, according to the present invention, the main material of the staircase is lightly formed by using the aluminum hollow column material, so that it is not handled together with the steel beam or the like when constructing the frame. In the case of interior construction, it can be easily constructed by an interior carpenter alone.

  In addition, the construction work, with the locking holes formed in the second floor mounting plate of the main material locked to the locking pieces of the beam fixing plate fixed to the beam, the floor mounting plate is fixed on the floor board, It can be constructed by a simple operation such as fixing the second floor mounting plate to the bolt fixing surface of the beam fixing plate.

  In this case, the corrugated plate may be one in which a corrugated plate support is provided on the hollow column material of the main material after construction of the main material at the site, and screws are fixed to the corrugated plate receiver, It is possible to ship after fixing the corrugated plate holder and the corrugated plate on the hollow pillar material of the main material, and only work to install the main material that fixes the corrugated plate receiver and the corrugated plate at the site. .

  In particular, when shipping in a factory after fixing the corrugated sheet tray and the corrugated sheet on the main hollow pillar material, the curing period of the corrugated sheet can be completed in the factory, so that construction failure due to insufficient curing can be prevented. That is, when fixing the corrugated board to the corrugated board receptacle, it is usual to fix it with bolts or screws via an adhesive, and to cure the adhesive until it hardens sufficiently to prevent the occurrence of ringing of the floor. The period must not rest on the corrugated board. However, if the corrugated board is cured on site, it tends to be placed on the corrugated board or use the stairs, but there is a lack of curing by fixing the corrugated board at the factory and shipping it after the curing period is over. It is possible to prevent construction failure due to.

  In addition, this staircase only has bolts attached to both ends of a single main material that secures the stepboard holder and the stepboard, enabling easy and quick assembly work by reducing the number of screws and bolting points as much as possible. can do.

  Furthermore, since the main material is an extruded aluminum hollow column material, it can be mass-produced and manufactured at low cost.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 to 3 show an outline of the overall configuration of the staircase 1.

  In other words, the staircase 1 includes a beam fixing plate 2, a main material 3, a step plate receiver 4, and a step plate 5.

  4 and 5, the beam fixing plate 2 is formed in a substantially U shape along the lower flange 61, the web 60, and the upper flange 62 of the beam 6, and the web 60 and the upper and lower flanges 61, 62, The reinforcing plate 22 and the bolt fixing surface 23 are welded and fixed to the groove member 21 that can be inserted into the space formed by the above. The reinforcing plate 22 is arranged at a central portion in the groove portion along the longitudinal direction of the groove member 21 so as to partition the groove portion, and is fixed to the groove member 21 by welding. The bolt fixing surface 23 is formed in a plate shape that closes between the rising pieces 21 a and 21 b of the groove member 21, and is fixed by welding between the rising pieces 21 a and 21 b and the edge of the reinforcing plate 22. Nuts 24 for screwing the bolts B are welded and fixed to the four corners of the bolt fixing surface 22, and a locking piece 25 whose tip is bent upwardly projects at the lower center of the bolt fixing surface 22. Has been. Bolt insertion holes 20 are drilled in the rising pieces 21a and 21b of the groove member 21 so as to match the bolt insertion holes 63 drilled in the lower flange 61 and the upper flange 62 of the beam 6, respectively.

  The beam fixing plate 2 is inserted into a space formed by the web 60 of the beam 6 and the upper and lower flanges 61 and 62, and then the bolt insertion hole 63 drilled in the beam 6 and the rising piece 21 a of the channel member 21, A bolt 64 is inserted from the outside of the beam 6 with the bolt insertion hole 20 drilled in 21b, and fixed to the beam 6 by screwing into a nut (not shown) provided inside the rising pieces 21a, 21b. Is done. At this time, the nut (not shown) may be screwed into the bolt 64 while being supported by hand, or may be previously welded to the inside of the bolt insertion hole 20 of the rising pieces 21a and 21b. The bolt insertion hole 20 drilled in the rising pieces 21a and 21b may be a screw hole that can be screwed into the bolt 64 so that (not shown) may not be used. As the beam fixing plate 2, one made of iron or aluminum can be used. The beam fixing plate 2 may be fixed on site or may be fixed to the beam 6 by welding in advance at the factory.

  After the beam fixing plate 2 is fixed, as shown in FIG. 5 (b), the surface of the beam 6 is covered with a finishing material 65 and a cloth 66 by interior work, but at least the nut 24 and the locking piece 25 are exposed. Finished to do.

  As shown in FIG. 6, the main material 3 is configured by fixing a floor mounting plate 31 and a second floor mounting plate 32 with bolts 33 to both ends of an extruded hollow column member 30 made of aluminum.

  The hollow column member 30 has an upper side width of about 110 mm, a lower side width of about 60 mm, and a height of about 200 mm, and is formed in a substantially trapezoidal cross-sectional shape with curved sides on both sides, and has a length of about 4 m. In order to fix the plate 31 and the second floor mounting plate 32, the floor mounting plate connection surface 30a and the second floor mounting plate connection surface 30b are formed by being cut into a taper shape. Bolt insertion holes 30c for bolting the hollow column member 30 and the floor mounting plate 31 are provided on the upper and lower surfaces in the vicinity of the floor mounting plate connection surface 30a. Further, on both side surfaces in the vicinity of the second floor mounting plate connection surface 30b, bolt insertion holes 30d for bolting the hollow column member 30 and the second floor plate 32 are provided. Furthermore, on the upper surface of the hollow column member 30, screw holes 30 e for fixing the stepped plate receiver 4 with bolts are provided at equal intervals throughout the longitudinal direction.

  As shown in FIG. 7, the floor mounting plate 31 includes a pair of insertion pieces 31 b and 31 c and a reinforcing piece 31 d that connects and reinforces the insertion pieces 31 b and 31 c from a plate plate 31 a that is in contact with the floor surface 7. Is formed of aluminum by protruding. The plate plate 31a is formed with a screw insertion hole 31e for fixing the floor mounting plate 31 to the floor surface 7 with screws. The insertion pieces 31b and 31c and the reinforcing piece 31d are obliquely projected with respect to the plate plate 31a, and the insertion piece 31b is in a state where the floor mounting plate connecting surface 30a of the hollow column member 30 is in contact with the plate plate 31a. , 31c are inserted into the upper and lower sides of the hollow column member 30, respectively. Each of the insertion pieces 31b and 31c is provided with a screw hole 31f into which a female screw is engraved.

  The floor mounting plate 31 is in a state where the plate plate 31a is brought into contact with the floor mounting plate connecting surface 30a of the hollow column member 30 and the insertion pieces 31b and 31c are inserted inside the upper and lower sides of the hollow column member 30, The bolt 33 is fixed to the hollow column member 30 by screwing the bolt 33 from the outer side of the bolt insertion hole 30c of the hollow column member 30 to the screw hole 31f of the insertion pieces 31b and 31c inside the hollow column member 30.

  As shown in FIG. 8, the second floor mounting plate 32 connects a pair of insertion pieces 32b, 32c and a pair of insertion pieces 32b, 32c from a plate plate 32a abutted against the bolt fixing surface 23 of the beam fixing plate 2. A reinforcing piece 32d to be reinforced protrudes and is formed of aluminum. Bolt insertion holes 32e for bolting the second floor mounting plate 32 to the nut 24 of the bolt fixing surface 23 are formed in the plate plate 32a. The insertion pieces 32b and 32c and the reinforcing piece 32d are obliquely projected with respect to the plate plate 31a, and the insertion piece 32b is in contact with the plate plate 32a and the second floor mounting plate connection surface 30b of the hollow column member 30. , 32c are inserted inside the both side surfaces of the hollow column 30. The insertion pieces 32b and 32c are each provided with a screw hole 32f into which a female screw is threaded. The plate plate 32 a is provided with a locking hole 32 g that can be locked to a locking piece 25 that protrudes from the bolt fixing surface 23 of the beam fixing plate 2. As shown in FIG. 5 (b), the main material 3 is fixed to the beam 6 by locking the locking holes 32 g to the locking pieces 25 of the beam fixing plate 2. The plate 31 and the second floor mounting plate 32 can be temporarily placed until they are fixed.

  The second floor mounting plate 32 is in a state where the plate 32a is brought into contact with the second floor mounting plate connecting surface 30b of the hollow column member 30 and the insertion pieces 32b and 32c are inserted inside the upper and lower sides of the hollow column member 30, The bolts 33 are screwed into the screw holes 32 f of the insertion pieces 32 b and 32 c inside the hollow column member 30 from the outside of the bolt insertion holes 30 d of the hollow column member 30 to be fixed to the hollow column member 30.

  As shown in FIG. 9, the corrugated plate receiver 4 has a substantially triangular cross section with a contact surface 41 having a width of about 100 mm, a stepped plate receiving surface 42 having a width of about 150 mm, and the remaining curved surface 43. It is formed of a cylindrical aluminum extruded material having a length of 520 mm. Both ends of the corrugated plate receiver 4 are formed with tapered surfaces 44 that are cut out in a tapered shape so as to be reduced to a width of about 325 mm from the corrugated plate receiving surface 42 toward the corners facing the corrugated plate receiving surface 42. Has been made.

  Near the center of the contact surface 41, four bolt insertion holes 41 a corresponding to the screw holes 30 e of the hollow column member 30 with which the contact surface 41 contacts are formed.

  The step plate receiving surface 42 is formed with four jig insertion holes 42a at the center corresponding to the position of the bolt insertion hole 42a. As shown in FIG. 10, the corrugated plate receiver 4 is a hollow column member 30 in which a bolt 40 inserted through a bolt hole 41 a of the contact surface 41 by inserting a jig such as a screwdriver or a hexagon wrench from the jig insertion port 42 a. It is fixed to the hollow column member 30 by being screwed into the screw hole 30e. Further, near both end portions of the step plate receiving surface 42, bolt insertion holes 42b for fixing the step plate 5 in contact with the step plate receiving surface 42 with bolts are formed. Further, screw insertion holes 42c for bolting the lid fixing member 45 are provided on both sides of the bolt hole 42b.

  As shown in FIG. 11, the lid fixing member 45 has a pair of locking pieces 45a and 45b which are parallel to each other, and the other locking piece 45b is formed short with respect to one locking piece 45a. It is formed in a deformed U shape. The lid fixing member 45 is fixed to the back surface of the step plate receiving surface 42 by screws 45c inserted through the screw insertion holes 42b in a state where the longer locking piece 45a is in contact with the back side of the step plate receiving surface 42. . The lid 46 fixed by the lid fixing member 45 is a locking member 46b, 46c corresponding to the locking piece 45a, 45b of the lid fixing material 45, from a plate material 46a having a shape matching the tapered surface 44 of the corrugated plate receiver 4. Is configured to project. The lid 46 is formed by engaging the locking pieces 46 b and 46 c with the locking pieces 45 a and 45 b of the lid fixing member 45 so that the portion of the plate material 46 a matches the tapered surface 44 of the stepped plate receiver 4. Fixed.

  As shown in FIG. 12, the corrugated plate 5 is made of a wooden plate having a width of approximately 850 mm, a depth of approximately 240 mm, and a thickness of approximately 36 mm, and is formed on the corrugated plate receiving surface 42 of the corrugated plate receiver 4 with which the corrugated plate 5 abuts. A bolt insertion hole 5a is formed at a position corresponding to the formed bolt insertion hole 42b. The bolt hole 5 a is formed with a step portion in which the head 51 a of the step plate fixing bolt 51 is accommodated on the surface of the step plate 5. With the step plate fixing bolt 51 fixed, the step plate fixing bolt 51 is provided in the step portion. The bolt head 51a is accommodated so that the surface of the corrugated plate 5 is smooth. For this reason, the corrugated plate fixing bolt 51 has a smooth head 51a portion, and a hexagonal hole 51b that can be screwed with a hexagon wrench (not shown) at the tip. Therefore, the step plate fixing bolt 51 is arranged so that the bolt hole 5 a and the step plate receiving surface 42 are formed from the surface side of the step plate 5 with the step plate 5 in contact with the step plate receiving surface 42 of the step plate receiver 4. It is inserted into the bolt insertion hole 42b and screwed into a nut 52 provided on the back side of the step plate receiving surface 42. At this time, as shown in FIG. 13, the screwing is performed by using a spanner or a hexagon wrench (not shown) from the tapered surface 44 portion of the step plate receiver 4 on the back surface side of the step plate receiving surface 42. At this time, the screwing operation is performed from the rear surface side of the step plate receiving surface 42, but the bolt insertion hole 42b is completely exposed by the taper surface 44, so that it does not interfere with the step plate receiver 4. Can be easily screwed together.

  Further, a groove portion 5b having a width of about 5 mm and a depth of about 10 mm is formed on the back surface side of the step plate 5 along the longitudinal direction. The groove 5b can be provided by being inserted into the groove 5b when the kick plate 53 is provided on the staircase 1 as necessary. As shown in FIG. 14, the kick plate 53 is inserted into the two step plates 5, 5 with the kick plate 53 inclined at an angle, and an insertion piece 53 a formed on the upper side of the kick plate 53. After raising the kick plate 53 so that the portion is inserted into the groove portion 5b of the upper step plate 5, the screw 54 is inserted through the screw insertion hole 53b drilled in the lower end portion of the kick plate 53, and the lower step. Are fixedly attached to the rear end surface of the step plate 5.

  Furthermore, a bolt insertion hole 5 c for attaching the handrail 8 is formed at one end portion along the width direction of the step board 5.

  The handrail 8 is attached by fixing the base end portion of each leg member 82 supporting the headboard 81 with a bolt (not shown) inserted from the back surface side of the bolt hole 5 c of each step plate 5. Note that the configuration of the handrail 8 is not particularly limited, and any other one can be used as long as it is generally used as a handrail for the stairs 1. Further, in the present embodiment, the handrail 8 is attached to one end portion of the corrugated board 5, but the handrail 8 may be attached to the other end portion side. However, the handrail 8 may be attached to both ends.

  Next, the construction method of the staircase 1 configured as described above will be described.

  First, as shown in FIG. 5A, when the beam 6 at the initial stage of the interior work is still exposed, the beam fixing plate 2 is fixed to the beam 6, and then, as shown in FIG. 5B. In addition, at least the nut 24 and the locking piece 25 of the beam fixing plate 2 or, at most, the entire bolt fixing surface 23 is exposed, the finishing material 65 and the cloth 66 around the beam 6 are pasted to the interior. The construction will be completed. Flooring is also laid on the floor surface 7 to complete the interior work.

  Next, as shown in FIG. 5 (c), the locking hole 32 f of the second floor mounting plate 32 of the main material 3 is locked to the locking piece 25 protruding from the bolt fixing surface 22 of the beam fixing plate 2. The main material 3 is temporarily placed between the floor and the second floor beam 6.

  In this temporarily placed state, the screws 34 are inserted from the screw insertion holes 31e of the floor mounting plate 31 to fix the floor mounting plate 31 to the floor surface 7, and the bolts 35 are inserted from the bolt insertion holes 32e of the second floor mounting plate 32. The main material 3 is fixed between the floor surface 7 and the second floor beam 6 by screwing and fixing the second floor mounting plate 32 to the nut 24 of the beam fixing plate 2.

  At this time, the main material 3 is made of aluminum, and the hollow column member 30 occupying most of the main material 3 is a lightweight member made of an extruded hollow material, so that it can be easily temporarily placed and fixed by two interior carpenters. . In addition, the main material 3 may be one in which the hollow column member 30, the floor mounting plate 31, and the second floor mounting plate 32 are respectively bolted and integrated on site, or an already integrated material is used on site. You may make it carry in. In the case of the main material 3 integrated at the site, the main material 3 can be carried in without being bulky, and in the case of the main material 3 already integrated, the number of work steps at the site can be reduced. In the case of the main material 3 that has already been integrated, the hollow column member 30, the floor mounting plate 31, and the second floor mounting plate 32 are not limited to those that are integrated by bolt fixing. The floor mounting plate 31 and the second floor mounting plate 32 may be integrated at both ends by welding or the like.

  Next, the bolt 36 inserted through the bolt insertion hole 41a of the contact surface 41 by abutting the contact surface 41 of the corrugated plate receiver 4 into each screw hole 30e on the upper surface of the hollow column member 30 of the main material 3 is screwed into the screw hole 30e. The corrugated plate receiver 4 is fixed to the hollow column member 30 by screwing into the hollow column member 30.

  At this time, each of the corrugated plate receivers 4 may be fixed to the main material 3 at the site, or what has already been fixed to the main material 3 at the factory is brought into the site. You may make it do. When fixing each corrugated board receptacle 4 on site, it can be carried in without being bulky, and in the case of the main material 3 to which each corrugated board receptacle 4 has already been fixed, the work man-hours on the spot can be reduced. Further, in the case of the main material 3 to which each step plate receiver 4 has already been fixed, each step plate receiver 4 and the hollow column member 30 are not limited to those integrated by bolt fixing, but each step plate receiver 4. May be integrated with the hollow column member 30 by welding or the like.

  And the step board 5 is affixed through the adhesive agent (illustration omitted) to the step board receiving surface 42 of each step board holder 4, and the bolt hole 5a and the step board receiving surface 42 are provided from the surface side of the step board 5. A step plate fixing bolt 51 is inserted into the bolt insertion hole 42 b, and the step plate fixing bolt 51 is screwed into a nut 52 provided on the back side of the step plate receiving surface 42 to fix the step plate 5 to the step plate receiver 4. To do. The corrugated board 5 takes a curing period of 2 to 3 days until the adhesive (not shown) is completely cured, and completes the fixing so as not to rise and descend on the corrugated board 5 during that period.

  At this time, each corrugated board 5 may be fixed to each corrugated board receptacle 4 at the site, or a construction where the corrugated board 5 is already secured to the main material 3 via the corrugated board receptacle 4 at the factory. You may make it carry in. When fixing each corrugated board 5 at the site, it can be carried in without being bulky, and in the case of the corrugated board 5 already fixed to the main material 3 via the corrugated board receptacle 4, it is possible to reduce the work man-hours at the site. Not only can it be carried out, but it can be carried to the site after a curing period at the factory, and construction defects can be prevented.

  Thereafter, a lid 46 is provided on each step plate receiver 4 and a handrail 8 is attached to each step plate 5 to complete the construction of the staircase 1.

  Thus, in the case of this staircase 1, the main material 3 and the step plate receiver 4 are made of aluminum, and the hollow column member 30 and the step plate receiver 4 of the main material 3 are formed lightweight by hollow extrusion molding. It can be easily constructed if there are two interior carpenters at the time of interior construction, without handling together with steel beams etc. when constructing the frame.

  Further, during the construction work, the heaviest main material 3 is caused to lock the locking holes 32g formed in the second floor mounting plate 32 of the main material 3 with the locking pieces 25 of the beam fixing plate 2 fixed to the beam 6. Therefore, it is not necessary to hold the main material 3 until it is fixed. Further, the main material 3 can be easily fixed to the beam 6 or the floor surface 7 in this temporarily placed state.

  Furthermore, since the main material 3 and the corrugated board receptacle 4 are lightweight, the corrugated board receptacle and the corrugated board 5 can be handled with the main material 3 in advance. Therefore, the construction on site can be simplified and the curing period of the corrugated board 5 can be eliminated.

  Furthermore, since this staircase 1 is simply provided with a step plate holder 4 and a step plate 5 on a single main material 3, the number of screws and bolts can be reduced as much as possible, and simple and quick assembly is possible. Can be. Further, by providing lids 46 on the tapered surfaces 44 at both ends of the stepped plate receiver 4, the appearance of the staircase 1 becomes a simple structure consisting only of the main material 3 and the stepped plate receiver 4, so that dust is not easily collected. It can be wiped and cleaned, making it easy to maintain.

  Furthermore, since the main material 3 and the corrugated board receptacle 4 are made of extruded products, they can easily cope with changes in the cross-sectional design, can be mass-produced, and can be manufactured at low cost. Moreover, since it is a product made from aluminum, it can match | combine a color tone easily with an aluminum sash etc., and the interior space excellent in the designability can be comprised.

  In the present embodiment, the staircase 1 has been described for a steel frame housing in which the beam fixing plate 2 is provided on the steel beam 6, but as shown in FIG. It may be for a wooden house provided with a beam fixing plate 2a.

  In this case, a bolt insertion hole 60a for fixing the beam fixing plate 2a is previously drilled in the beam 6a.

  The beam fixing plate 2a is formed in a plate shape capable of coming into contact with the beam 6a. A nut 24 is welded and fixed to a surface side in contact with the second floor mounting plate 32, and a locking piece 25 is projected. In the state where the beam fixing plate 2a is in contact with the beam 6a, a countersunk screw hole 26 having a countersink on the surface side in contact with the second floor mounting plate 32 is provided at a position corresponding to the bolt insertion hole 60a of the beam 6a. Is provided.

  In this beam fixing plate 2a, a bolt 27 having a countersink corresponding to the countersink of the countersunk screw hole 26 is inserted from the side of the countersunk screw hole 26, and the tip of the bolt 27 inserted into the bolt insertion hole 60a of the beam 6a. A nut 28 is screwed into the portion and fixed to the beam 6a. Others are constructed in the same manner as the case where the beam fixing plate 2 is provided on the steel beam 6. A hexagonal hole is provided in the bald portion of the bolt 27 so that it can be screwed with a hexagon wrench. The hole may be one that can be screwed with a Phillips screwdriver or a flat-blade screwdriver.

  In FIG. 15, members corresponding to the present embodiment are denoted by the same reference numerals and description thereof is omitted.

  It can be used as a staircase in a house.

It is a perspective view which shows the staircase structure which concerns on this invention. It is a side view which shows the step structure which concerns on this invention. It is a front view which shows the staircase structure which concerns on this invention. (A) thru | or (c) is the front view, top view, and side view which show the beam fixing plate of the staircase used for the staircase structure concerning this invention. (A) thru | or (c) is process drawing which shows the outline of the construction process from fixation of the beam fixing plate to the beam of the stair used for the staircase structure concerning this invention to fixation of the main material. (A) thru | or (d) are the top view, side view, rear view, and II line end view which show the main material of the staircase used for the staircase structure concerning this invention. (A) is a top view which shows the floor mounting plate of the staircase used for the staircase structure concerning this invention, (b) is sectional drawing which shows the state which fixed the main material which has the floor mounting plate to the floor surface. (A) is a top view which shows the 2nd floor attachment plate of the staircase used for the staircase structure concerning this invention, (b) is sectional drawing which shows the state which fixed the main material which has the same 2nd floor attachment plate to the beam. (A) thru | or (e) are the front view, top view, back view, side view, and II-II line end view which show the stepped plate receiver used for the staircase structure based on this invention. (A) And (b) is the perspective view and sectional drawing which show the state which fixes a corrugated board receptacle to the main material of the staircase which concerns on this invention. It is a figure which shows the cross section which shows the fitting state of the cover to the step board receiver of the staircase structure which concerns on this invention, and the taper surface and cover of the step board receiver developed corresponding to this cross section. (A) thru | or (c) are the top views which show the step board of the stair used for the staircase structure concerning this invention, the III-III sectional view, and the IV-IV sectional view. (A) And (b) is the perspective view and partial sectional view which show the state which fixes a step board to the step board receptacle of the staircase structure based on this invention. (A) thru | or (c) are the front view which shows the kick board of the staircase used for the staircase structure which concerns on this invention, and the side view and front view which show the construction state. (A) thru | or (c) is process drawing which shows the outline of the construction process from fixation of the beam fixing plate to the wooden beam of the staircase structure concerning this invention to fixation of a main material.

Explanation of symbols

1 Stairs 2 Beam fixing plate 2a Beam fixing plate 23 Bolt fixing surface 25 Locking piece 3 Main material 30 Hollow column material 31 Floor fixing plate 31a Plate plate 31b Insertion piece 31c Insertion piece 32 Second floor fixation plate 32a Plate plate 32b Insertion piece 32c Insertion Piece 32g Locking hole 33 Bolt 4 Corrugated plate holder 41 Contact surface 42 Corrugated plate fixing surface 42b Bolt insertion hole 5 Corrugated plate 51 Corrugated plate fixing bolt 6 Beam 6a Beam 60 Web 61 Lower flange 62 Upper flange 64 Bolt 7 Floor surface

Claims (3)

It is made to fix to a beam by fixing with a bolt, and in this fixed state, a bolt fixing surface is formed outside the beam, and a beam fixing plate in which a locking piece protrudes from the bolt fixing surface,
One end of the long hollow pillar material made of extruded aluminum is provided with a floor mounting plate and a second floor mounting plate, and the second floor mounting plate is formed with a locking hole,
And aluminum stair receiving and stair treads receiving surface is provided et the abutting surface and the step plate is fixed which is abutted on a hollow pillar of the main material,
A corrugated plate fixed to the corrugated plate receiving surface of the corrugated plate receiver,
The beam fixing plate is bolted to the side of the beam so that the bolt fixing surface is provided outside the beam, and at least the nut and the locking piece are exposed on the bolt fixing surface of the beam fixing plate. The floor mounting plate is fixed on the floor plate with the surface of the beam covered with finishing material or cloth, and with the exposed locking pieces locked to the locking holes formed in the second floor mounting plate of the main material. The second floor mounting plate is fixed to the bolt fixing surface of the beam fixing plate, and the step plate holder is fixed at predetermined intervals on the main hollow column material, and the step plate is fixed to each step plate receiver. A staircase structure characterized by that. The main material is an extruded hollow column made of aluminum,
An insertion portion that can be inserted into the floor-side end of the hollow column material is integrated with the plate plate, and the insertion portion of the hollow column material is inserted into the floor-side end portion of the hollow column material. A floor mounting plate designed to be bolted from the outside;
The insertion portion that can be inserted into the end portion on the second floor side of the hollow column material is formed upright and integrated with a plate plate having a locking hole in which the locking piece can be locked. The staircase structure according to claim 1, comprising a second floor mounting plate adapted to be bolted from the outside of the hollow column member in a state of being inserted into the second floor side end of the material. The corrugated plate receiver is formed in a hollow cylindrical shape having an abutting surface that abuts on the main material and a corrugated plate receiving surface to which the corrugated plate is fixed. The both ends of the step plate receiver are formed in a tapered shape so that the bolt insertion holes for fixing the plate are exposed, and the bolts of the step plate to the step plate receiver can be easily fixed. Staircase structure .

Images