JP4234564B2 - Strip stairs - Google Patents

Description

  The present invention relates to a strip staircase provided in a room of a building.

  There is a known strip staircase in the building. This strip staircase is configured by attaching a plurality of step plates to two slabs and attaching handrails to these step plates. The corrugated board is attached to, for example, a triangular corrugated board supporting member attached to the upper surface of the spar girders by nailing or the like (see, for example, Patent Document).

Japanese Patent Laid-Open No. 11-303216

  However, in the above-mentioned patent document, since two spar girders, a plurality of step plates and a step plate supporting member are separately manufactured, and they are assembled to complete a strip staircase, it takes a lot of time and effort. In addition, it takes a lot of time to attach the corrugated board support member. Therefore, there is a problem that it is not easy to attach the corrugated plate support member at a predetermined position with high precision and to integrate it with the spar.

In other words, a plurality of step plate support members are required for each girder, and the step plate support members are formed in a triangular shape when viewed from the side. It takes time.
In addition, in order to attach a plurality of step plate support members to the sheathing girder, the step plate support members are arranged at a predetermined dimensional interval and fixed to the beaming girder by nailing. When the stepping plate supporting member is driven by the nail, since the stepping plate supporting member is formed in a triangular shape in a side view, it must be driven from the inclined surface or the vertical surface of the stepping plate supporting member toward the further beam. For this reason, it is difficult to determine the direction of nailing, and the corrugated board support member may be displaced and move. This requires careful work, and it is difficult to fix it at a predetermined position with high accuracy. Since it is necessary to attach a plurality of such step plate support members, the above-mentioned problems occur each time. As a result, it takes a lot of work to install the step plate support members, and the step plate support members can be attached with high accuracy. It is not easy to attach it to a predetermined position and integrate it with the spar.

  The object of the present invention is to easily manufacture the spar girders and the corrugated plate support members and to accurately determine the positions of the spar girders and the corrugated plate support members. It is to provide a strip staircase that can be integrated.

The strip staircase according to claim 1 of the present invention will be described with reference to the drawings. As shown in FIGS . 1 and 6 , two strip girders 10 and 11 arranged opposite to each other, and these ribs 10 and 11, step plate support members 20 provided at predetermined intervals in the longitudinal direction of the spar 10 and 11, a plurality of step plates 30 respectively supported by these step plate support members 20, and these steps The strip staircase 1 is configured to include handrails 40 provided between the plates 30, and each of the strip girders 10 and 11 and the step plate support member 20 are cut out from the same material as a single body. A step plate positioning block portion 22 is provided on the upper surface of the step plate support member 20, and a recess 35 is formed on the lower surface of the step plate 30 so as to be able to accommodate the block portion 22. digit 10 and 11 and the corrugated plate support member 20 are formed by bonding together two pieces of an inner beam member 12 and an outer beam member 13 arranged on the outside thereof, and the block portion 22 is formed of each inner beam member. The upper end portion of 12 is formed so as to protrude from the upper end portion of the outer girder 13.

According to the present invention, the sagittal girder constituting the staircase and the step board support member are cut out from the same material and formed as an integrated body, so that both members are manufactured separately and manufactured more easily than when they are combined. This also eliminates the need for attaching the corrugated plate support member to the further beam. In addition, since the spar girder and the step plate support member are cut out from the same material and formed as a single body, the position of the sag girder and the step plate support member can be determined with high precision, Can be easily integrated.
Further, a concave portion is formed on the lower surface of the step plate, and the block portion on the upper surface of the step plate supporting member is accommodated in the concave portion, so that the step plate supporting member and thus the positioning beam can be easily positioned.
Further, since each of the spar girders may be formed by bonding two inner girder materials and outer girder materials together, it is not necessary to use a single thick material. Therefore, handling becomes easy and materials can be easily obtained. Furthermore, since the block part should just protrude the upper surface of an inner girder from the upper surface of an outer girder, a block part can be formed easily.

As shown in FIG. 3, the strip staircase of claim 2 of the present invention is the strip staircase according to claim 1 , wherein the inner girder member 12, the outer girder member, and the step plate support member are each a machine such as NC machining. It is cut out and manufactured by processing.

  In this invention, since the inner girder material, the outer girder material, and the step plate support member are processed by numerical control, the inner girder material and the step plate support member, and the outer girder material and the step plate support member are simultaneously formed by cutting out each member. As a result, a highly accurate strip staircase can be formed. Further, since the inner girder material, the outer girder material, and the step plate support member are integrally formed by machining, all of them can be provided with substantially the same accuracy when a large number of strip stairs are formed.

As shown in FIG. 6, the strip staircase according to claim 3 of the present invention is the strip staircase according to claim 1 or claim 2 , wherein the two spar 10 and 11 and each step plate support member 20 are It is characterized by being covered with exterior members 16 and 17, respectively.

  According to the present invention, the two spar girders and each step plate support member are formed by bonding the two spar members together, but since these are covered with the exterior member, The bonded surface of the member cannot be seen from the outside. Therefore, a strip staircase having an excellent appearance can be obtained.

The strip staircase according to claim 4 of the present invention is formed of composite plywood formed by adhering a resin sheet to plywood in the strip staircase according to claim 3 , as shown in FIG. It is characterized by being.

  According to this invention, it can be set as the strip staircase which is excellent in water resistance and durability, and excellent in appearance.

As shown in FIG. 5, the strip staircase according to claim 5 of the present invention is the strip staircase according to claim 4 , wherein the resin sheet is an olefin sheet and the composite plywood is an olefin plywood 16. The bent portion D of the olefin plywood 16 has a V-cut portion that is notched in an inclined manner in a direction away from each other at a predetermined angle α ° from one side to the other side of the thickness of the olefin plywood 16 across the fold line M. K is formed.

  According to this invention, since it can be bent along the notch, it can be easily bent even if the olefin plywood has a certain thickness. In addition, since the resin sheet is formed of an olefin resin, a toxic gas is not generated at the time of combustion, and an exterior member excellent in environmental conservation can be obtained.

As shown in FIG. 8, the strip staircase according to claim 6 of the present invention is the strip staircase according to any one of claims 1 to 5 , wherein the upper ends of the two spar 10 and 11 are An upper receiving member 25 is provided for connecting the respective spar 10 and 11 and fixed to the mounted portion 50, and a lower stub fixed to the floor 60 at the lower end of the two spar 10 and 11. Engaging portions 12E and 13E that can be positioned by engaging with the material 26 are provided.

  According to the present invention, the two spar girders are positioned by fixing the upper end portion to the attached portion with the upper receiving material and engaging the engaging portion at the lower end with the lower receiving material. This makes it easier to install the stairs.

The strip staircase according to claim 7 of the present invention is arranged along the wall 2 of the room A of the building in the strip staircase according to any one of claims 1 to 6 , as shown in FIG. The two spar 10 and 11 are arranged close to each other toward the center of the step plate 30 in the width direction, and the handrail 40 is provided on one side of the plurality of step plates 30 opposite to the wall 2. The end portions of these step plates 30 and the handrail 40 are connected by a connecting member.

  According to this invention, even if the strip stairs are arranged along the wall and the handrail is provided at the opposite end of the wall, the end of the step plate and the handrail are connected by the connecting member. Even if the step plate and the handrail try to move independently, they are restrained by other members and cannot move, and as a result, it is possible to prevent one step plate from tilting to one side when using the stairs.

As shown in FIG. 9, the strip staircase according to an eighth aspect of the present invention is the strip staircase according to the seventh aspect , wherein the connecting member 47 is erected on the lowermost step plate 30 of the step plates 30. A first connection member 45 that connects the vertical portion 41B of the handrail to the second stepped plate 30 from the bottom, and a nosing handrail 42 that is erected on the step plate 30 other than the lowermost step plate. The second connecting member 46 is configured to connect the adjacent corrugated plates 30 to each other.

  According to this invention, the tip vertical part of the handrail and the step plate of the second step from the bottom are connected by the first connecting member, and the step plate other than the step plate and the lowermost step step plate and the nose handrail Are connected by the second connecting member, so that the plurality of step plates of the strip staircase and the handrail are all connected. As a result, even if the strip staircase is arranged along the wall and the handrail is provided at the opposite end of the wall, even when the strip and the handrail are going to move independently when using the strip staircase Since it is restrained by other members and cannot move, one corrugated plate does not tilt to one side.

As shown in FIG. 10, the strip staircase of claim 9 of the present invention is the strip staircase of claim 8 , wherein the tip vertical portion 41B is formed with an opening groove 41C, and the first connecting member 45 is elastic. It is formed of a member and has a locking portion 45C at the tip, and is provided to project forward from the front surface portion 30B of the second stage plate 30 from the bottom. The locking portion 45C is perpendicular to the tip. When pressed by the portion 41B, it is reduced and inserted into the opening groove 41C of the tip vertical portion 41B, and when the pressing force is released, it expands and can be locked with the tip vertical portion 41B. It is what.

  According to the present invention, since the first connecting member is formed of an elastic member, the first connecting member may be provided at the tip thereof with the locking portion that can be locked with the opening groove portion of the handrail tip vertical portion. Can be configured in a simple manner.

A strip staircase according to a tenth aspect of the present invention is the strip staircase according to the eighth aspect or the ninth aspect , as shown in FIG. 11, wherein the second connecting member 46 includes a side surface of the stair nosing handrail 42. It is formed of a hook member attached to the front surface portion 30B of the opposing corrugated plate 30, and an engaging portion 42C formed on the side surface of the stair nosing handrail 42 can be hooked on the hook member. It is what.

  According to the present invention, the hook member is attached to the step plate side, the engaging portion is provided on the stair rail for the nose, and the engaging portion only has to be hooked on the hook member. As a result, it is easy to connect the balustrade for the nose and the corrugated board.

The strip staircase according to claim 11 of the present invention is, as shown in FIG. 12, the strip staircase according to any one of claims 1 to 10 , wherein the handrail 40 is obliquely downward from an end portion at the top of the staircase. A handrail main body 41 having an inclined portion 41A extending in the direction and the tip vertical portion 41B continuous to the tip of the inclined portion 41A, and extending toward the step plates 30 to the inclined portion 41A of the handrail main body 41, respectively. A plurality of stair nosing handrails 42 fixed to the step board 30, and the inclined portion 41A of the handrail main body 41 extending toward the step boards 30 and being fixed to the respective step boards 30; An intermediate balustrade 43 arranged next to the plurality of stair nosing handrails 42, and the handrail main body 41, the nosing handrail 42 and the intermediate handrail 4 Of at least the handrail body 41 is characterized in that it is formed by molding composite materials by mixing wood flour synthetic resin.

  According to the present invention, the handrail main body or the like is molded by mixing wood powder into the synthetic resin, so that a large number can be accurately formed in the same shape even in a complicated shape. Moreover, since the synthetic resin is included, it is excellent in water resistance and durability, and can be a handrail excellent in appearance.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows an example in which the strip staircase 1 of the present embodiment is provided in a room A of a building.
The strip staircase 1 is provided along the wall 2 of the room A of the building, and can be moved between the room under the room A and, for example, the mezzanine floor B.
The strip staircase 1 is a plurality of right and left left and right saddle beams 10 and 11 in the ascending direction, and a plurality of step board support members provided on the upper surfaces of the saddle beams 10 and 11 at predetermined intervals. The plurality of step plates 30 provided via the step plate support portion 20 and the staircase 40 standing on the end of the step plate 30 opposite to the wall 2 are configured. Yes.

The right and left spar 10 and 11 are only formed in the right and left direction and have substantially the same configuration, so the details will be described below with the right spar 10.
As shown in FIG. 2, the spar 10 is composed of an inner girder member 12 and an outer girder member 13, and then side packings 14 and 15 are adhered to the outer sides thereof, which are exterior members. It is formed so as to be covered with a girder cover 16.

  As shown in FIG. 3, each of the inner girder members 12 includes a main body portion 12A and a plurality of step plate support portions 12B formed integrally with the main body portion 12A. The main body portion 12A and the corrugated plate support portion 12B are formed by, for example, integrally cutting a plywood having a predetermined thickness by machining that processes a tool 100 such as a saw blade attached to the tool holder 101 by NC control or the like. Is formed.

  The corrugated board support part 12B is provided over six places, for example. Further, an attachment portion 12D is formed at the upper end portion of the inner girder member 12, and an upper receiving member 25 is attached to the attachment portion 12D as shown in FIG. Further, an engagement groove 12E is formed at the lower end portion of the inner beam member 12, and the engagement groove 12E can be fitted to the lower receiving member 26. The attachment portion 12D and the engagement groove 12E are also formed by being cut out integrally by machining such as NC processing when the main body portion 12A and the corrugated plate support portion 12B are formed.

In addition, when attaching the inner girder member 12 and the outer girder member 13 and attaching the side packings 14 and 15 to the outer sides of the attaching portion 12D and the engaging groove 12E, as shown in FIG. It is hidden by the side packings 14 and 15.
The outer girder member 13 has substantially the same shape as the inner girder member 12, and as shown in FIG. 2, the main body portion 13A, the step plate support portion 13B, the attachment portion 13D, and the engagement groove 13E are provided. These parts are formed by being cut out integrally by machining such as NC machining in the same manner as the inner girder member 12.

  When the inner girder member 12 and the outer girder member 13 are bonded together, as shown in detail in FIG. 4, the upper surfaces 12C and 13C of the step plate support portions 12A and 13A The upper surface 12 </ b> C is higher than the upper surface 13 </ b> C of the outer spar member 13 by the dimension L <b> 1, and the raised portion of the inner spar member 12 constitutes the block portion 22.

  The side packings 14 and 15 are formed of somewhat thin (for example, about 5.5 mm), for example, plywood, and have a width and a length approximately the same as the width of the main body portions 12A and 13A of the girder members 12 and 13. Is formed.

The girder cover 16 is formed of synthetic resin, for example, Ws (woody series) olefin plywood, which is a composite plywood formed by adhering an olefin sheet to the plywood, and as shown in FIG. When the outer girder member 13 and the side packings 14 and 15 are covered, the cross section is substantially U-shaped.
A plurality of holes 16A are formed in the surface of the girder cover 16 so that the stepped plate support portions 12B and 13B can be inserted therethrough. These holes 16A can also be machined by NC machining or the like, like the inner girder member 12 and the like.

  Further, as shown in FIG. 5, the folding portion D of the girder cover 16 is located on both sides of the folding line M and from one side to the other side in the thickness direction leaving a predetermined thickness on the folding portion D. Thus, a V-cut portion K cut at an angle of α °, for example, 45 ° is formed. Therefore, when the girder cover 16 is folded, the notch portions K on both sides sandwiching the fold line M come into contact with each other, so that even if the girder cover 16 has some thickness, it can be folded easily and accurately. Can do.

When the left and right spar 10 and 11 are arranged at a predetermined distance so as to face each other, as shown in FIG. 6, the spacing between the block portions 22 of the inner spar members 12 in each spar 10 and 11 Is S1. Then, in this interval S1, as shown in FIG. 7, the step plate 30 is attached by fitting the concave portion 35 of the step plate 30 having the gap S2.
Moreover, the cover 17 which is the exterior member formed with the said Ws olefin plywood also covers the step board support part 12B of each inner girder member 12, and the step board support part 13B of the outer girder member 13. ing.

  The step plate 30 is formed of a plywood or the like having a predetermined thickness. As shown in FIG. 7, the back surface of the step plate 30 has a predetermined interval S2, and the two prisms 31 extend in the longitudinal direction of the width of the step plate 30. They are attached parallel to each other along the direction. These prisms 31 are formed of a plate member such as a lauan plywood, for example, and are arranged at substantially the center in the length direction and the width direction of the step plate 30, and are bonded with an adhesive such as a bond and at the same time with a screw or the like. 30 is fixed.

  As described above, the spacing S2 between the prisms 31 is slightly smaller than the spacing S1 between the block portions 22 of the inner spar member 12 in each of the spar 10 and 11 when the two spar 10 and 11 are combined. The height dimension L2 of the prism 31 is larger than the difference in height between the upper surface 12C of the inner girder member 12 and the upper surface 13C of the outer girder member 13, that is, the height dimension L1 of the block portion 22. Slightly smaller dimensions are formed. And the said recessed part 35 which accommodates the block part 22 of each inner girder member 12 in the spar 10 and 11 is comprised by the site | part enclosed by the two prisms 31 in the step board 30. As shown in FIG.

On one side of the two prisms 31 on the back surface of the step plate 30 (on the stairs climb direction side), a linear inclined portion that becomes thinner from the position of one end of the prism 31 toward the surface corresponding to each prism 31. 30A is formed. These inclined portions 30A are formed so as to easily guide the two prisms 31 to the respective block portions 22 of the opposed inner girder members 12 when the step plate 30 is attached to the two spar 10 and 11L. It is what.
The step plate 30 is fixed by driving a nail from the outside of the prism 31 toward the block 22 after sandwiching the block 22 with two prisms 31. In addition, you may form 30 A of inclination parts in the curved shape dented not only to linear form but to the thickness side.

As shown in FIG. 8, the two spar 10 and 11 are connected to the upper receiving member 25 at the upper part, and the upper receiving member 25 is fixed to the attached portion 50 by nailing or the like. Yes. Further, the lower portions of the two spar 10 and 11 are engaged with a lower receiving member 26 fixed at a predetermined position on the floor 60 in the room A, and are fixed by nailing or the like. At this time, a nail (not shown) is struck from the front surface of the spar 10, 11, for example, the lower end of the outer spar member 13, toward the lower support member 26, and the lower part of the spar 10, 11 and the lower support member 26, and then the cover 17 is placed on the step plate support portion 12B of the inner girder member 12 and the step plate support portion 13B of the outer girder member 13, thereby hiding the nailing portion.
In addition, after the upper receiving material 25 is fixed to the attached portion 50, a ceiling parting material 51 (see FIG. 1) is provided to cover the side surface of the upper receiving material 25. And the uppermost step board 31 continuing to the floor surface of the said mezzanine floor B is provided in the upper surface of these upper receiving materials 25 and the ceiling parting material 51. As shown in FIG.

  As described above, the handrail 40 is provided at the end of each step plate 30 opposite to the wall 2. As shown in FIG. 12, the handrail 40 includes a handrail main body 41, a stair nosing handrail 42 erected between the handrail main body 41 and each step plate 30, and an intermediate handrail 43. It is configured with. The handrail main body 41, the stair balustrade 42, and the intermediate balustrade 43 are formed by a molding process in which wood powder is mixed into a synthetic resin.

  The handrail main body 41 is formed in a substantially round pipe shape, and an inclined portion 41A that obliquely descends from an end portion fixed to the wall body 52 of the mezzanine floor B, and a tip vertical portion that is bent from the tip of the inclined portion 41A and extends downward 41B, and the lower end of the tip vertical portion 41B is fixed to the lowermost step plate 30. Further, the stair balustrade 42 and the intermediate balustrade 43 are formed of, for example, square pipe members.

  The handrail 40 as described above is connected to the step plate 30 by a connecting member 47 as shown in FIG. The connecting member 47 includes a first connecting member 45 and a second connecting member 46, and the first connecting member 45 causes the tip vertical portion 41 </ b> B of the handrail body 41 and the second-tiered step plate 30 from the bottom. Are connected to each other by the second connecting member 46, and the step board 30 other than the second and the lowest step board 30 from the bottom and the nose handrail 42 are connected.

  In other words, the tip vertical portion 41B and the second-stage plate 30 from the bottom are connected by the first connecting member 45. The first connecting member 45 is formed of a spring material having elasticity, for example, as shown in FIG. 10, a contact portion 45A that contacts the front surface portion 30B of the step plate 30, and both ends of the contact portion 45A. Side surface portion 45B projecting forward from the front surface portion, and an engagement portion 45C that is continuous with the side surface portion 45B and is formed obliquely toward the front surface portion 30B side of the stepped plate 30. The two side surface portions 45B are formed in a tapered shape in which the front side is somewhat narrower than the contact portion 45A side.

  On the other hand, a groove portion 41C having a predetermined width is formed on the side surface of the vertical portion 41B of the handrail body 41 on the side of the step plate 30, and when the groove portion 41C is pressed against the first connecting member 45, the engaging portion 45C is narrowed. When the groove portion 41C passes the engaging portion 45C, the engaging portion 45C returns to the original state by the elastic force of the engaging portion 45C, and as a result, the engaging portion 45C and the groove portion 41C are locked and the handrail body 41 The tip vertical portion 41B and the second stage plate 30 from the bottom are connected.

  As shown in FIG. 11, each stair nosing handrail 42 and the step plate 30 in contact with each side surface are connected by a second connecting member 46. The stair balustrades 42 and the intermediate balustrades 43 are provided one by one on each corrugated board 30, and the nostril balusters 42 face the front surface portion 30 </ b> B of the adjacent corrugated board 30. .

  The second connecting member 46 is constituted by a hook screw screwed into the front surface portion 30B of each step plate 30 other than the lowest step and the second step from the bottom, and the head side of the hook screw 46 is a nose handrail. It is attached in a state of projecting from the front surface portion 30B with a dimension slightly larger than the thickness of the child 42.

On the other hand, a locking portion 42C is formed at a portion of the nosing handrail 42 facing the front surface portion 30B of the step plate 30, and the hooking screw 46 can be inserted into the locking portion 42C. The round hole portion 42A is formed, and an elongated hole portion 42B that is continuous with the round hole portion 42A and that can move only the shaft portion of the hooking screw 46 is formed.
In order to connect the stair balustrade 42 and the step board 30, the round hole portion 42 </ b> A of the stair balustrade 42 is inserted into the hook screw 46, and then the stair balustrade 42 is lowered to form a long hole portion. It is performed by engaging 42B and the hook screw 46.

  The vertical end 41B of the handrail main body 41, the balustrade 42 for the nose, and the handrail 43 for the intermediate are connected by the first connecting member 45 and the second connecting member 46, and the upper end is inclined. After being fixed to the portion 41A, the lower ends are respectively placed on the step plate 30 and then fixed by bolts 47 inserted from the back surface of the step plate 30 as shown in FIG. A bolt cap 48 is put on the head of the bolt 47.

  That is, the lowermost step plate 30 to which the tip vertical portion 41B of the handrail main body 41 is fixed is provided with one bolt insertion hole 30C penetrating in the thickness direction, and the step plates 30 other than the lowermost step, That is, two bolt insertion holes 30 </ b> C that penetrate in the thickness direction are formed in the step plate 30 to which the stair balustrade 42 and the intermediate balustrade 43 are fixed.

On the other hand, nuts (not shown) are embedded in the lower ends of the tip vertical portion 41B, the stray balustrade 42, and the intermediate balustrade 43.
Accordingly, after the step plates 30 are attached to the spar girders 10 and 11, the lower ends of the tip vertical portion 41B, the nosing handrail 42, and the intermediate handrail 43 are placed on each step plate 30, and the bolts of the step plate 30 are mounted. Bolts 47 are inserted into the insertion holes 30C from the back side of the step plate 30, and screwed with nuts embedded in the lower ends of the tip vertical portion 41B, the stair nosing handrail 42, and the intermediate handrail 43, and The step plate 30 is fixed, and the strip staircase 1 is configured as shown in FIG.

Next, a method for assembling the strip staircase 1 as described above will be described.
First, as shown in FIG. 6, the inner spar member 12, the outer spar member 13, and the side packings 14 and 15 are covered with a spar cover 16, and the spar 10 and 11 are made close to a predetermined interval. The recesses 35 of the corrugated plate 30 are fitted into the opposing block portions 22 of the corrugated plate supporting portion 20 that is the second step from the top and the second step from the bottom, respectively, and the spar 10 and 11 are temporarily assembled and the spar 10 , 11 is determined.

  Thereafter, as shown in FIG. 8, the attachment portions 12 </ b> C at the upper ends of the spar 10 and 11 are connected by the upper support member 25, and the spar 10 and 11 in this state are connected to the engagement holes 12 </ b> E and 13 </ b> E at their lower ends. Then, the position is adjusted so that it engages with the lower receiving material 26 attached to the floor, and the upper receiving material 26 is fixedly attached to the attached portion 50 by nailing or the like. To the lower receiving material 26.

Next, after the ceiling parting material 51 is put on the upper receiving member 26 and attached, the cover member 17 is put on each step plate support portion 20, and the concave portion 35 of each step plate 30 is supported on the step plate support of the strip girders 10 and 11. The step plates 30 are fitted to the block girders 10 and 11 by being fitted into the block portions 22 of the portion 20.
Then, a handrail 40 is attached to one side of each corrugated board 30. At this time, the groove portion 41C of the tip vertical portion 41B of the handrail main body 41 in the handrail 40 is pressed and engaged with the engaging portion 45C of the first connecting member 45 as shown in FIG. And the tip vertical part 41B of the handrail main body 41 are coupled.

  Subsequently, as shown in FIG. 11, the nosing handrail 42 provided on the step plate 30 other than the second step from the bottom, and the step plate 30 adjacent to the step plate 30, the front portion of the step plate 30. The engaging hole 42A of the stroller handrail 42 is inserted into and engaged with the hooking screw 46 screwed into 30B, and the stroller handrail 42 is slightly lowered to engage the long hole portion 42B with the hooking screw 46. The handrail 40 is attached by locking, and the installation of the strip staircase 1 is completed as shown in FIG.

According to this embodiment, the following effects can be obtained.
(1) The sheath beams 10 and 11 constituting the strip staircase 1 are each configured to include an inner beam member 12 and an outer beam member 13, and the inner beam member 12 and the outer beam member 13 are cut out and formed. When doing so, the corrugated board support part 20 is also cut out from the same material and formed as an integrated object. Therefore, as compared with the case where both members are manufactured separately and combined with each other as in the prior art, it can be manufactured more easily, and the trouble of attaching the corrugated plate support portion 20 to the further beams 10 and 11 becomes unnecessary.

(2) The inner girder member 12 and the outer girder member 13 of the spar girder 10 and 11 and the corrugated plate support portion 20 provided on each of them are cut out from the same material and formed as an integrated body by machining such as NC machining, for example. Therefore, the positions of the spar girders 10 and 11 and the step plate support portion 20 can be determined with high accuracy, the processing efficiency can be improved, and the processing time can be shortened.

(3) When the spar 10 and 11 are arranged at a predetermined interval, the recesses 35 formed on the back surface of the step plate 30 are fitted into the block portions 22 provided on the inner spar members 12 so as to face each other. Assembly can be performed. Therefore, the positioning of the corrugated plate support 20 and the positioning of the spar 10 and 11 can be easily performed.

(4) The block portion 22 into which the step plate 30 is fitted forms the upper surface 12C of the step plate support portion 20 of the inner girder member 12 when the inner girder member 12 and the outer girder member 13 of the spar 10 and 11 are formed. Since it can be formed only by raising the upper surface 13C of the outer girder member 13 by a predetermined dimension L1, the block portion 22 can be easily formed.

(5) Two inclined surface portions 30A that are inclined from the back surface to the front surface side corresponding to the two square bars 31 are formed on the back surface of the step plate 30. When attaching to the board, it is easy to guide the block part 22 with the inclined surface part 30A, and as a result, the attaching work of the corrugated board 30 becomes easy.

(6) Engagement grooves 12E and 13E are respectively formed at the lower ends of the inner girder member 12 and the outer girder member 13, and these engagement grooves 12E and 13E are connected to the lower receiving member 26 fixed to the floor 60. It can be fitted. Therefore, when the spar 10 and 11 is provided at a predetermined position, the spar 10 and 11 can be positioned simply by fitting the engaging grooves 12E and 13E to the lower support member 26. Positioning work is easy.

(7) Since the girder cover 16 that covers the inner girder member 12, the outer girder member 13 and the side packings 14 and 15, and the cover member 17 that covers the step plate support portion 20 are made of Ws olefin plywood, water resistance and durability The strip staircase 1 can be made excellent in appearance and also in appearance.

(8) The girder cover 16 is made of Ws olefin plywood and is used by being folded into a U-shaped cross section. However, since the V cut part K is formed in the fold line D, the girder cover 16 is formed along the V cut part K. Therefore, folding can be performed accurately even if there is some thickness.

(9) The tip vertical portion 41B of the handrail 40 and the step plate 30 at the second step from the bottom are connected by the first connecting member 45, and the step plate 30 other than the step plate 30 and the lowermost step plate 30 and the nose plate Since the handrail 42 is connected by the second connecting member 46, the plurality of step plates 30 of the strip staircase 1 and the handrail 40 are all connected. As a result, even when the strip staircase 1 is arranged along the wall 2 and the handrail 40 is provided at the opposite end of the wall 2, the step plate 30 tries to move independently when the strip staircase 1 is used. Even in this case, since it is restrained by other members and cannot move, one step board 30 does not tilt to one side and can be climbed up and down safely.

(10) The first connecting member 45 is formed of a spring material, and has an engaging portion 45C that engages with a groove portion 41C formed in the tip vertical portion 41B of the handrail 40. The engaging portion 45C narrows when the groove portion 41C is pressed against the first connecting member 45, and when the groove portion 41C passes through the engaging portion 45C, the engaging portion 45C returns to its original state due to the elastic force of the engaging portion 45C. Since the portion 45C and the groove portion 41C are locked, the tip vertical portion 41B of the handrail 40 and the second step plate 30 from the bottom can be connected with a simple configuration.

(11) The second connecting member 46 is configured by a hook screw screwed into the front surface portion 30B of each step plate 30 other than the lowest step and the second step from the bottom, and the round hole portion 42A of the stair balustrade 42. Is inserted into the hooking screw 46, and then the nosing handrail 42 is lowered, and the elongated hole portion 42B of the nosing handrail 42 is engaged with the hooking screw 46 so that the nosing handrail 42 and the step plate are engaged. 30 can be connected, the structure is simple, and the connecting work is also easy.

(12) Since the handrail main body 41, the stroller handrail 42, and the intermediate handrail 43 in the handrail 40 are formed by mixing wood powder into a synthetic resin, water resistance and durability are achieved. It is possible to obtain a handrail that is excellent in properties and excellent in appearance.

It should be noted that the present invention is not limited to the above-described embodiments, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.
For example, in the embodiment, in order to form the concave portion 35 on the back surface of the step plate 30, two square members 31 are attached at a predetermined interval. However, the shape is not limited to this, and the U-shaped cross section is formed. An integral object may be used. According to this, the mounting effort is reduced.

  Moreover, in the said embodiment, although the girder cover 16 and the cover member 17 were made from Ws olefin plywood, if it has not only this but the same performance, the other resin sheet was adhere | attached on the plywood. Composite plywood may be used.

  Furthermore, in the above embodiment, the stair balustrade 42 and the intermediate balustrade 43 constituting the balustrade 40 are formed by molding by mixing wood powder into a synthetic resin. However, the present invention is not limited to this, and may be a steel balustrade for a nose and an intermediate balustrade. In this way, the overall strength of the handrail 40 can be increased.

  The present invention can be used by installing in a room of a building.

It is a perspective view which shows one Embodiment of the strip staircase which concerns on this invention. It is a disassembled perspective view which shows one of the spar girders of the said embodiment. It is a side view which shows the inner girder material which comprises the sheathing girder of the said embodiment. It is a longitudinal cross-sectional view which shows the balance beam of the said embodiment. It is a longitudinal cross-sectional view which shows the folding part of the girder cover of the said embodiment. It is a disassembled perspective view which shows the two sheeting girders and the corrugated board of the said embodiment. It is a perspective view which shows the step board of the said embodiment. It is an exploded view which shows the attachment position of the sheathing girder of the said embodiment. It is an exploded view which shows the attachment state of the corrugated board and handrail of the said embodiment. It is an exploded view which shows the connection structure of the corrugated board and handrail of the said embodiment. It is an exploded view which shows the connection structure of the corrugated board and handrail of the said embodiment. It is a side view of the partial cross section which shows the attachment completion state of the strip staircase of the said embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Strip staircase 2 ... Wall 10 ... Right side girder 11 ... Left side girder 12 ... Inner girder member 13 ... Outer girder member 16 ... Girder cover (exterior member)
20 ... Corrugated board support part (corrugated board support member)
DESCRIPTION OF SYMBOLS 22 ... Block part 25 ... Upper receiving material 26 ... Lower receiving material 30 ... Step board 35 ... Recessed part 40 ... Handrail 41 ... Handrail main body 41B ... Tip vertical part 42 ... Hand rail for nosing 45 ... 1st connection member 46 ... Second connecting member

Claims (11)

Two rafters arranged opposite to each other, stepped plate support members provided on the respective rafters at a predetermined interval in the longitudinal direction of the reed spar, and supported by these stepped plate support members, respectively. A strip staircase comprising a plurality of step plates and a handrail provided between the step plates,
Each of the sacrificial girders and the corrugated board support member are cut out from the same material and made as an integrated object,
A step plate positioning block is provided on the upper surface of the step plate support member, and a recess is formed on the lower surface of the step plate so as to accommodate the step plate positioning block.
The two sacrificial girders and the corrugated plate support members are formed by bonding two sheets of an inner girder material facing each other and an outer girder material arranged outside thereof, and the stepped plate positioning block portion A strip staircase characterized in that an upper end portion of an inner beam member is formed so as to protrude from an upper end portion of the outer beam member. The strip stairs according to claim 1 ,
The strip staircase, wherein the inner girder material, the outer girder material and the corrugated plate support member are each cut and manufactured by machining such as NC machining. The strip stairs according to claim 1 or claim 2 ,
The strip staircase, wherein the two spar girders and the step plate support members are each covered with an exterior member. The strip stairs according to claim 3 ,
A strip staircase, wherein the exterior member is formed of a composite plywood formed by bonding a resin sheet to a plywood. The strip stairs according to claim 4 ,
The resin sheet is an olefin sheet, and the composite plywood is an olefin plywood, and a bent portion of the olefin plywood has a predetermined angle from one side to the other side of the thickness of the olefin plywood across a folding line. A strip staircase, characterized in that V-cut portions that are notched in an inclined manner in a direction away from each other are formed. In strip staircase in any one of Claims 1 thru | or 5 ,
An upper receiving member is provided at the upper end portion of the two spar girders to connect the spar girders and is fixed to the mounted portion, and the lower end portion of the two spar girders is fixed to the floor portion. A strip staircase, characterized in that an engaging portion is provided which can be positioned by engaging with a lower receiving material. The strip staircase according to any one of claims 1 to 6 ,
The two spar girders are arranged close to the center in the width direction of the corrugated board, and the handrail is the wall of the plural corrugated boards. A strip staircase provided on one side opposite to each other, wherein the end portions of these step plates and the handrail are connected by a connecting member. The strip stairs according to claim 7 ,
The connecting member includes a first connecting member that connects the vertical portion of the handrail standing on the bottom step plate of the step plates and the second step plate from the bottom, and other than the bottom step plate A strip staircase comprising: a stair nosing balustrade erected on the step plate and a second connecting member for connecting an adjacent step plate. The strip stairs according to claim 8 ,
An opening groove portion is formed in the tip vertical portion, the first connecting member is formed of an elastic member, has a locking portion at the tip, and is provided in front of the front portion of the second stepped plate from the bottom. The locking portion is reduced when it is pressed by the tip vertical portion and is inserted into the opening groove of the tip vertical portion, and is expanded when the pressing force is released, and the tip vertical portion is expanded. Strip staircase, characterized in that it can be locked to the part. The strip stairs according to claim 8 or claim 9 ,
The second connecting member is formed by a hook member attached to a front surface portion of a step plate facing the nostril baluster, and an engaging portion formed on the nostril baluster is hooked on the hook member. Strip staircase characterized by what is possible. The strip staircase according to any one of claims 1 to 10 ,
The handrail includes a handrail main body having an inclined portion extending obliquely downward from an end portion at an upper portion of the staircase and the tip vertical portion continuing to the tip of the inclined portion, and the stepped portion of the handrail main body includes the stepped portion. A plurality of handrails for the nose that extend toward the plate and are fixed to the respective step plates, and extend toward the respective step plates at the inclined portion of the handrail main body and are fixed to the respective step plates. and wherein the plurality of constructed and an intermediate handrail Rico disposed next to the handrail element for nosing, the handrail body, of the handrail element and an intermediate handrail resonator for nosing, at least the handrail body Is a strip staircase characterized by being formed of a composite material formed by mixing wood powder into a synthetic resin.

Images