JP3540145B2 - Staircase structure - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a staircase structure applied to a case where an upstairs staircase is displaced from a beam on an upper floor.
[0002]
Problems to be solved by the prior art and the invention
When installing stairs in a building such as a general house, the position of the staircase of the stairs is shifted (away) from the arrangement position of the receiving beams on the upper floor, which is also a part of the structural frame, by design. Sometimes. In such a case, conventionally, one of three main types of countermeasures as described below has been employed, but each has its own drawbacks as described later.
[0003]
FIG. 3 shows a first countermeasure. In the case of this staircase structure, the arrangement position of the rising frame 102 of the L-shaped staircase 100 is located apart from the original arrangement position of the receiving beam on the upper floor (the position shown by the two-dot chain line). For this reason, in this staircase structure, the arrangement position of the rising frame 102 is matched with the arrangement position of the reception beam 104 by using the hook-shaped reception beam 104 in plan view. In other words, it can be said that the original arrangement position of the receiving beam is changed by using the hook-shaped receiving beam 104.
[0004]
However, when the above-mentioned countermeasure is applied to a prefabricated house or the like, it is necessary to use a deformed receiving beam 104, and that portion protrudes from the design module. For this reason, there is a problem that it is difficult to share a structural frame, and productivity of a prefabricated house or the like is reduced.
[0005]
FIG. 4 shows a second countermeasure. In the case of this staircase structure, it is the same as the staircase structure in that the position of the rising frame 108 of the L-shaped staircase 106 is located away from the position of the original receiving beam 110 on the upper floor. For this reason, in this staircase structure, an additional receiving beam 112 that is parallel to the original receiving beam 110 is newly installed at the position where the rising frame 108 is disposed, so that the arrangement position of the rising frame 108 is arranged. It is matched to the setting position. In other words, it can be said that instead of changing the original arrangement position of the receiving beam 110, the additional receiving beam 112 is newly provided.
[0006]
As described above, since the additional receiving beam 112 is newly installed, a gap is generated between the original receiving beam 110 and the additional receiving beam 112. Therefore, the additional floor plate 114 is provided between the two receiving beams 110 and 112. Will be arranged.
[0007]
However, according to the above countermeasures, it is necessary to install an additional receiving beam 112 dedicated to the rising frame 108 separately from the original receiving beam 110, and accordingly, it becomes necessary to install an additional floor plate 114. Further, a receiving beam mounting bracket for attaching both ends of the additional receiving beam 112 to the structural skeleton side, and fasteners such as bolts and nuts are required. For this reason, there is a problem that the number of parts and the number of assembling steps are increased, which leads to a reduction in productivity of a prefabricated house or the like.
[0008]
FIG. 5 shows a third countermeasure. In the case of this staircase structure, the arrangement position of the rising frame 118 of the L-shaped staircase 116 is moved from the original arrangement position (the position shown in FIGS. 3 and 4 described above) to the arrangement position of the receiving beam 120, The arrangement position of the rising frame 118 is matched with the arrangement position of the receiving beam 120. In other words, it can be said that instead of changing the original arrangement position of the receiving beam 120, the arrangement position of the rising frame 118 is shifted to the arrangement position of the receiving beam 120.
[0009]
However, according to the above countermeasures, since the L-shaped stairs 116 start to descend immediately from the upper-floor receiving beam 120, the ceiling height of the stairway passage 122 provided below the L-shaped stairs 116 is reduced. There are difficulties.
[0010]
As described above, the conventional countermeasures have all the drawbacks, and it has been desired to devise a countermeasure without these drawbacks.
[0011]
The present invention has been made in view of the above-described circumstances, and has as its object to provide a staircase structure that can improve productivity and can sufficiently secure the ceiling height of a passage under a staircase.
[0012]
[Means for Solving the Problems]
The present invention according to claim 1 is a staircase structure applied to a case where an ascending staircase is arranged displaced from a beam on an upper floor, which is an element on the structural skeleton side , wherein the staircase is generally This is an indoor staircase installed inside a building such as a house, and a stairway under the staircase is provided below the staircase. extending to the installation position of the receiving beam of the upper story floor beyond at extension of the spar, it is configured separately from the said Agarikamachi is disposed between the said receiving beam and the Uekaiyuka floorboards was the support, it is characterized in that.
[0013]
The staircase structure according to the present invention as set forth in claim 1 is installed indoors of a building such as a general house, and the stairs rise stairs are displaced with respect to a beam on an upper floor, which is an element on the structural skeleton side. Applicable if applicable. Further, the staircase structure according to the present invention is applied to a case where a stairway is provided below the stairs.
Then, in accordance with the above premise, the end of the upright side of the girder material of the stairs is extended beyond the arrangement position of the rising stairs to the arrangement position of the receiving beam on the upper floor, and the extension of the girder material increases the stairs. and since the arranged and Uekaiyuka between the receiving beam and configured to support the floor plate, which is formed separately, the following effects are obtained.
[0014]
First, in the present invention, since the original receiving beam is left as it is and is utilized, in other words, as in the first countermeasure described in the column of the related art and the problem to be solved by the invention, The use of the deformed (hook-shaped) receiving beam does not change the original arrangement position of the receiving beam, and thus does not hinder the sharing of the structural frame.
[0015]
Further, in the present invention, since only the original beam is left as it is and the configuration is utilized, in other words, since the configuration does not use the additional beam dedicated to the rising frame as in the second countermeasure described above, This eliminates the necessity of the additional beam and a beam mounting bracket for fixing the beam to the structural frame. Therefore, the number of parts and the number of assembling steps do not increase particularly.
[0016]
Furthermore, according to the present invention, by devising the above configuration, when descending from the upper floor to the downstairs using the stairs, it is necessary to start descending the stairs after passing through the floor plate supported by the extension of the girder material. become. Looking at this from another point of view, in the third countermeasure described above, since the position of the rising stairs was moved to the position of the receiving beam on the upper floor, the stairs were immediately descended from the receiving beam on the upper floor. This means that the ceiling height of the passage under the stairs becomes low, but according to the present invention, since the start of descending is delayed, the ceiling height of the passage under the stairs increases.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
[0018]
FIG. 2 shows a schematic plan view of an L-shaped staircase 10 which is a type of unit staircase applied to a unit house. As shown in this figure, the L-shaped staircase 10 includes a lower straight staircase portion 14 connected to the first floor 12 and a turning staircase portion connected to the upper end of the lower straight staircase portion 14 to form a corner portion. 16 and an upper straight staircase portion 20 connecting the turning staircase portion 16 and the second floor 18 as an “upper floor”.
[0019]
Here, FIG. 1 is a perspective view of the upper straight staircase portion 20 in the L-shaped staircase 10 according to the present embodiment. As described below, the structure of the upper straight staircase portion 20 according to the present embodiment is different from that of the present embodiment. There are features.
[0020]
The upper straight staircase portion 20 is configured to include a pair of slabs 22 as “spar members” arranged in parallel with each other and a tread plate 24 arranged for each step of the slabs 22. In addition, between the upper end portions 22A of the pair of sash beams 22, an ascending frame 26 is fixed by a fixing means (not shown). In addition, the rising frame 26 is fixed in a state of protruding by a predetermined height from the end surface of the upper end 22 </ b> A of the sasara girder 22.
[0021]
As in the case of the above-described conventional example, the arrangement position of the rising stairs 26 is displaced (separated) in substantially the same plane with respect to the receiving beam 28 of the second floor 18 so as to be parallel to each other. Therefore, in the present embodiment, the upper ends 22A of the pair of slabs 22 are each extended beyond the arrangement position of the stairs 26 to the arrangement position of the receiving beam 28 on the second floor 18. Hereinafter, the extended portion is referred to as “extended portion 22B of the sara spar 22”.
[0022]
The extension 22B of the slab girder 22 is brought into contact with the web 28A of the receiving beam 28 of the above-mentioned second floor 18, which is a channel steel, and is grasped as a pair of tapping screws 30 [in a broad sense, as (first) fixing means. ). As a result, the extension 22B of the slab beam 22 is supported between the receiving beam 28 and the rising frame 26. Then, on the extension portions 22B of the pair of sasara girders 22 thus formed, a rectangular flat floor plate 32 that fills a gap between the receiving beam 28 of the second floor 18 and the rear end surface of the rising frame 26 is placed. It is fixed to the receiving beam 28 by a pair of tapping screws 34 (broadly, grasped as (second) fixing means). The floor plate 32 is also fixed to the pair of extension portions 22B by fixing means (not shown).
[0023]
In the present embodiment, a step is formed between the floorboard 32 and the rising frame 26, but the step is eliminated by performing a finishing process using a finishing material (not shown) or the like later.
[0024]
Next, the operation and effect of the present embodiment will be described.
As described above, in the present embodiment, the arrangement position of the rising frame 26 of the upper straight staircase portion 20 in the L-shaped staircase 10 is far from the arrangement position of the receiving beam 28 of the second floor 18 which is an element on the structural skeleton side. In view of the above, an extension portion 22B is provided on the pair of sash beams 22 of the upper straight staircase portion 20 to extend beyond the arrangement position of the rising stairs 26 to the arrangement position of the receiving beam 28 on the second floor 18, Since the floor plate 32 is supported by 22B, the following operations and effects can be obtained.
[0025]
First, in the present embodiment, since the original receiving beam 28 is left as it is and the configuration is utilized, in other words, it is not a configuration in which the original receiving position is changed by using a deformed receiving beam. Therefore, there is no hindrance to the common use of the structural frame. As a result, according to the present embodiment, the productivity of the unit house can be improved.
[0026]
Further, in the present embodiment, since only the original receiving beam 28 is left as it is and is utilized, in other words, since the configuration does not use the additional receiving beam dedicated to the rising frame 26, the additional receiving beam or the The need for mounting brackets for fixing to the structural frame is eliminated. Therefore, the number of parts and the number of assembling steps do not increase particularly. Therefore, also from this viewpoint, the productivity of the unit house can be improved.
[0027]
Furthermore, according to the present embodiment, by devising the above configuration, when descending from the second floor to the first using the L-shaped stairs 10, it passes through the floor plate 32 supported by the extension 22 </ b> B of the slab girder 22. After that, it starts to descend the L-shaped stairs 10. That is, the start of descending the stairs is delayed. For this reason, according to this embodiment, the ceiling height of the stairway passage 36 can be increased.
[0028]
In addition to the above, when viewed in comparison with the above-described conventional countermeasures, in the case of the first countermeasure shown in FIG. Is a special size, but according to the present embodiment, the blow-through size of the structural body in plan view is a standard size. Therefore, also in this sense, the productivity of the unit house can be improved.
[0029]
Further, in the case of the second countermeasure shown in FIG. 4, since the additional receiving beam 112 and the additional floor plate 114 are used, the blow-through 115 (see FIG. 4) becomes small. A well-sized stairwell 38 can be provided.
[0030]
In the present embodiment, the present invention is applied to the L-shaped stairs 10 having the slab structure. However, the present invention is not limited to this, and the present invention may be applied to the L-shaped stairs having the side girder structure.
[0031]
Further, in the present embodiment, the present invention is applied to the L-shaped staircase 10 including the lower straight staircase portion 14, the turning staircase portion 16, and the upper straight staircase portion 20, but the present invention is not limited to this. The present invention may be applied to this.
[0032]
Further, in the present embodiment, the L-shaped staircase 10 is applied to a unit house, but the present invention is not limited to this, and the present invention may be applied to a prefabricated building other than the unit house.
[0033]
Further, in the present embodiment, the floor plate 32 is formed separately from the second floor 18. However, the present invention is not limited to this, and a part corresponding to the floor plate 32 is integrally formed as a part of the second floor 18, and a pair of slab beams 22 are formed. May be configured to be supported by the extension portion 22B of the second member.
[0034]
【The invention's effect】
As described above, the staircase structure according to the first aspect of the present invention is installed indoors of a building such as a general house , a stairway under the stairs is provided, and a staircase structure side is provided. Applied when the stairs rise stairs are displaced with respect to the element of the upper floor beam, which is an element. Since it was extended to the position where the girder was provided and the extension of the girder supported a floor plate that was placed between the rising frame and the girder and that was separate from the upper floor , There is no hindrance to the common use of the frame, and the number of parts and assembling man-hours do not increase, and the start of descending the stairs can be further delayed.As a result, productivity can be improved. Moreover, it is an advantage that the ceiling height of the passage under the stairs can be sufficiently secured. It was having an effect.
[Brief description of the drawings]
FIG. 1 is an enlarged perspective view of an upper straight staircase portion, which is a main part of an L-shaped staircase according to the present embodiment.
FIG. 2 is a schematic plan view of an L-shaped staircase configured using the upper straight staircase portion shown in FIG. 1;
FIG. 3 is a schematic plan view of an L-shaped staircase showing a first conventional measure.
FIG. 4 is a schematic plan view of an L-shaped staircase showing a second conventional measure.
FIG. 5 is a schematic plan view of an L-shaped staircase showing a third conventional measure.
[Explanation of symbols]
10 L-shaped stairs 18 Second floor (upper floor)
22 Sasara girder (girder material)
22B extension part 26 rising frame 28 receiving beam 32 floor board

Claims (1)

A staircase structure applied when the rising staircase of the stairs is arranged offset from the beam on the upper floor, which is an element on the structural skeleton side ,
The stairs are indoor stairs installed inside a building such as a general house , and a stairway below the stairs is provided,
The end of the girder material of the stairs on the ascending direction is extended beyond the location of the stairs to the location of the receiving beam on the upper floor,
At extension of the beam members and the arranged and the Uekaiyuka between the Agarikamachi and the receiving beam supporting a floor plate, which is configured separately,
A staircase structure characterized by that.

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