JP7280912B2 - Precut staircase, construction method and manufacturing method thereof - Google Patents

Description

The present invention relates to a precut staircase, its construction method and manufacturing method.

In general, when constructing interior building materials, it is often used to pre-cut the construction materials to the desired shape and size at the factory in order to minimize the processing of the materials at the construction site. Stairs that are constructed from precut members are called precut stairs.

This precut staircase is made by cutting the side plates (also called side girders), treads, risers, etc. of the stairs from plate materials in advance in a factory, and tread grooves and riser grooves for fitting the treads and risers to the side plates, respectively. In this case, the staircase can be constructed only by making a few cuts at the construction site of the staircase.

On the other hand, however, precut staircases have many types and numbers of constituent members, especially in round staircases, which inevitably makes adjustment difficult at the construction site.

Therefore, conventionally, as shown in Patent Document 1, when a round staircase is configured with precut stairs, the connection ends of a plurality of side plates are arranged so as to coincide with the center of the module of the building when the stairs are assembled. It is proposed that by forming the round staircase vertically, it will be unitized and independent from the building, eliminating the need for processing and adjustment at the construction site.

Japanese Patent No. 3059660

By the way, in a staircase, especially a round staircase, the constituent members are finely divided as described above, and there are many members that are similar but have slightly different shapes. As the number increases, it becomes difficult at the construction site to quickly identify which member is to be constructed in which position, and if it takes time, the construction becomes rather troublesome.

The present invention has been made in view of such a point, and its object is to devise the constituent members of precut stairs so that even if the constituent members are completely precut, the constituent members can be removed at the construction site of the stairs. To facilitate and speed up the construction of precut stairs by allowing the construction position to be easily and quickly discriminated.

In order to achieve the above object, the present invention focuses on the fact that a plurality of side plates of stairs that are precut in advance at a factory have hidden portions that are not visible from the front of the stairs after construction. The display symbol of the construction position information was formed.

Specifically, the first invention comprises a plurality of side plates (also referred to as side girders) constructed so as to be continuous in the ascending/descending direction of the stairs, and a plurality of side plates whose ends are fixedly supported on the inner surfaces of the plurality of side plates. A tread board and a riser board are provided, and a tread board groove into which the end of the tread board is fitted on the inner surface of each of the side boards, and a riser continuous perpendicularly to the tread board groove into which the end of the rise board is fitted. The object is a pre-cut staircase in which plate grooves are formed by digging.

Further, on the inner surface side of each of the side plates, a region is defined by the tread groove and the riser groove and is hidden from the front side of the stair by the tread and the riser fitted in the tread groove and the riser groove, respectively, in the construction state of the stair. (2), a side plate construction position display symbol indicating construction position information of the side plate is formed by excavation in the back side region including the groove inner surfaces of the tread groove and the riser groove. The "front side of the stairs" refers to the side of the user walking on the stairs, and the "back side" refers to the opposite side.

In the first aspect of the invention, a plurality of side plates of the stairs are pre-cut at a factory, and tread grooves and riser grooves are also dug into the inner surface of each side plate. In addition, construction position information display symbols for the stairs of the side plates are provided by engraving on the back side regions of the inner surfaces of the plurality of side plates. At the construction site of this precut staircase, when constructing a plurality of side plates in line in the stair climbing direction, even if the members of the precut staircase are unpacked and the members are separated, the construction position of each side plate is the back side of the inner surface side. It is possible to easily discriminate based on the construction position information display symbols in the area, and even if there are a plurality of side plates, each construction position can be quickly identified, and confusion about the construction position is eliminated. As a result, precut stairs can be easily constructed, and the construction time can be shortened.

In addition, the construction position information display symbol of each side plate is hidden from the front side of the staircase by the treads and the riser which are partitioned by the tread groove and the riser groove and which are respectively fitted into the tread groove and the riser groove in the construction state of the stair. , which also includes the groove inner surfaces of the tread grooves and the riser grooves. As a result, in the constructed staircase, the construction position information display symbol of each side plate is hidden from the front side of the staircase and is not exposed on the front side of the staircase. never be or will be.

In addition, since the side plate installation position indication symbol on the inner side of the side plate is formed by the same digging process as the tread groove and the riser plate groove, it is not necessary to machine the tread plate groove and the riser plate groove on the inner surface of each side plate at the factory. At the same time, it is possible to engrave the construction position indication symbol in the back side area on the same inner surface side as those grooves. In this way, by engraving the construction position display symbol on the side plate on the same inner surface side at the same time as processing the tread groove and the riser groove, it becomes possible to automatically process it with an NC processing device, for example. Not only can the number of man-hours and labor in the process be reduced, but also human error when processing the construction position indication symbol can be reduced.

A second aspect of the invention is the precut staircase of the first aspect, wherein the precut staircase is a spiral staircase having a spiral staircase portion and a straight staircase portion connected to the spiral staircase portion.

In this second invention, the precut staircase is a spiral staircase having a spiral staircase portion and a straight staircase portion. The shape of the side plates of the circular stepped portion and the straight stepped portion are different from each other, and the shapes of the side plates of the circular stepped portion are slightly different. In this way, since the circular staircase is composed of a plurality of side plates having different shapes in the circular staircase portion and the straight staircase portion, it is difficult to quickly identify the construction position of the side plate only by the shape. However, even in such a circular staircase having a plurality of side plates with different shapes, the construction position can be easily determined from the side plate construction position display symbol provided on the inner surface side of the side plate, so that the construction position can be determined without hesitation. , the construction of the winding stairs can be easily carried out in a short time.

A third invention is the precut staircase according to the first or second invention, wherein a tread construction position indication symbol indicating construction position information of the tread is provided on the back surface (lower surface) of the tread, and the back surface of the riser is provided with the tread construction position display symbol. A riser construction position display symbol is provided to indicate construction position information of the riser.

In the third invention, a tread construction position display symbol indicating the construction position information is provided on the back surface (lower surface) of the tread, and a riser construction position display symbol indicating the construction position information is provided on the back surface of the rise board. Therefore, the construction positions of a plurality of treads and risers can be easily identified by the construction position display symbols, and the construction of precut stairs can be carried out more easily and in a short time.

In addition, since the tread construction position display symbol is provided on the back surface (lower surface) of the tread and the riser construction position display symbol is provided on the back surface of the riser board, the construction position information display symbol is displayed on the constructed stairs. The staircase is hidden from the front side of the staircase, and there is no sense of incongruity in aesthetics of the staircase or deterioration of the design.

A fourth invention is a method for constructing a precut staircase according to any one of the first to third inventions. Prepare a construction drawing of a stair on which side plates with symbols are described, and at the time of construction, compare the side plate construction position display symbol of each side plate with the construction position display symbol of the side plate in the above construction drawing and construct the side plate. Characterized by

In the fourth aspect of the invention, since the side plate having the same construction position indication symbol as the construction position indication symbol of the plurality of side plates is described in the construction drawing of the stairs, the side plate construction position indication symbol of the side plate described in this construction drawing. and the actual side plate construction position indication symbols of multiple side plates. The construction can be performed accurately, the construction efficiency of the stairs is improved, and the construction can be performed easily and quickly.

A fifth invention is a method of manufacturing the precut staircase according to any one of the first to third inventions, wherein the side plate position information display symbol on the side plate is at least a tread groove and a riser for the side plate. It is characterized in that it is formed simultaneously with processing of the groove.

According to the fifth aspect of the invention, in a factory, it is possible to machine the tread grooves and the riser grooves on the inner surface side of each side plate of the stairs, and at the same time, machine the side plate construction position indication symbol on the same inner surface side as those grooves. . In this way, by processing the construction position indication symbol on the side plate at the same time and on the same inner surface side as the tread groove and the riser groove, it is possible not only to reduce labor in the manufacturing process, but also to reduce the time and effort when providing the construction position indication symbol. Accurate construction position display symbols can be ensured by reducing human error, and it is possible to contribute to improving the reliability of construction work.

As described above, according to the present invention, on the inner surface side of the side plate that constitutes the precut staircase, the back side area is defined by the tread grooves and the riser grooves and is hidden from the front side of the staircase by the treads and the riser when the stairs are being constructed. In addition, by providing the side plate construction position display symbol indicating the construction position information of the side plate by the same excavation processing as the tread groove and the riser groove, the construction position of a plurality of side plates can be determined based on the construction position information display symbol. This makes it possible to quickly identify precut stairs, thereby facilitating the construction of precut stairs and shortening the construction time. Further, in the constructed staircase, the construction position information display symbols on the side plates are hidden from the front side of the staircase.

FIG. 1 is a plan view showing a winding staircase as a precut staircase according to an embodiment of the present invention. FIG. 2 is a plan view showing a combination of side plates of the stair set of the circular staircase. FIG. 3 is a diagram illustrating construction position indication symbols for side plates, treads, and risers of a circular staircase. FIG. 4 is a diagram showing a construction drawing of a winding staircase in which side plates having side plate construction position indication symbols are described.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail based on the drawings. The following descriptions of the embodiments are merely exemplifications in nature, and are not intended to limit the invention, its applications, or its uses at all.

FIG. 1 shows a winding staircase S as a precut staircase according to an embodiment of the invention. This circular staircase S is constructed between the upper and lower floors of the building, and is a clockwise ascending staircase that rises clockwise when viewed from above.

The circular staircase S includes, for example, a three-step lower straight staircase S1 whose lower end is located on the floor of the lower floor. A spiral staircase portion S2, for example six steps, which is bent at 180°, and a lower end portion is connected to the upper end portion of the spiral staircase portion S2, and an upper end portion is connected to the floor of the upper floor, for example, the upper side of the three steps. and a straight step portion S3. The total number of stages of the circular staircase S is, for example, 12, and the 13th stage is the floor of the upper floor. In FIG. 1, the number of steps from the lower step of the staircase S is indicated by a circled number, and the straight arrow indicates the upward direction of the staircase S. As shown in FIG. Also, in the description, the side where the bottom and top steps of the stairs S are located is defined as "front", the opposite side is defined as "rear", and the terms "left" and "right" refer to the state viewed from the front to the rear. Let us say left and right respectively. Further, the central side of the circular staircase S in the circular direction is called "inner side", and the opposite side is called "outer side".

In FIG. 1, reference numeral 1 denotes a wooden core pillar positioned at the center of the inner side of the round staircase S (the center in the round direction of the round staircase S). are erected in series with the core pillar 1 at a certain interval (for example, 910 mm between the centers of the pillars). In addition, directly behind the core pillar 1 and the left and right front pillars 2, 2, three wooden rear pillars 3, 3, . . . It is set up to line up with. That is, the core pillar 1 and the three left and right front pillars 2, 2 and the three rear pillars 3, 3, . . . It is the same as the horizontal spacing between the pillars 2 and between the rear pillars 3, 3, . . . A portion surrounded by these six pillars 1 to 3 forms a staircase space having a rectangular cross section, and a winding staircase S is constructed so that a winding staircase portion S2 is arranged in this staircase space. Each of the core column 1, each front column 2 and each rear column 3 is a tubular column having a square cross section with one side of 105 mm.

The circular staircase S includes, for example, seven (plurality) side plates 5 to 11, also called stringers, for example, twelve (plurality) treads 14, 14, . , 16, .

As shown in FIG. 2, each of the seven side plates 5 to 11 is made of a thick plate material having a thickness of 22.5 mm and a width of 350 mm. It is constructed so that it continues diagonally in the direction of elevation. The seven side plates 5 to 11 are fixed to the core pillar 1, the two front pillars 2, 2 and the three rear pillars 3, 3, . It is used as a supporting member for structurally supporting the plates 16, 16, .

Specifically, between the right side of the left front pillar 2 and the floor of the lower floor is the outer plate 5 (see FIG. 2(a)) of the lower straight step S1, and the left side of the core pillar 1. The inner plates 6 (see FIG. 2(b)) of the same lower straight staircase S1 are arranged in parallel so as to face each other in the left and right direction between and the floor of the lower floor.

In addition, between the right side of the left front pillar 2 and the right side of the left rear pillar 3, there is arranged a lower side plate 7 (see FIG. 2(c)) of the circular stair portion extending in the front-rear direction across the two pillars 2 and 3. The front end portion of the lower side plate 7 of the circular staircase portion is continuous with the rear end portion of the outer side plate 5 of the lower straight staircase portion S1 in a substantially abutted state.

Furthermore, on the front side surfaces of the three rear pillars 3, 3, . The left end of 8 abuts against the right side of the rear end of the lower plate 7 of the round staircase.

On the left side of the right front pillar 2 and the right rear pillar 3, an upper side plate 9 (see FIG. 2(e)) of the winding staircase portion extending in the front-rear direction between the two pillars 2 and 3 is arranged. The rear end portion of the upper side plate 9 abuts against the front side surface of the right end portion of the inner side plate 8 of the circular staircase portion.

In addition, the outer plate 10 (see FIG. 2(f)) of the upper straight step portion S3 is placed between the left side of the right front pillar 2 and the floor of the upper floor, and the right side of the core pillar 1 and the upper floor The inner plates 11 (see FIG. 2(g)) of the same upper straight step portion S3 are arranged in parallel so as to face each other in the left and right direction between the floor portion and the floor portion.

Although not shown in FIG. 1, between the front pillar 2 and the rear pillar 3 located on the left side, a left side wall base material extending in the front-rear direction across both the pillars 2 and 3 is also provided on the rear side. Between the three pillars 3, 3, . Right side wall base materials extending in the front-rear direction across both pillars 2 and 3 are respectively arranged and fixed to the wall of the spiral staircase S. constitutes

At least one end of each of the plurality of treads 14, 14, . . . fixedly supported. Specifically, in the lower straight staircase portion S1, three treads 14, 14, . . . and three risers 16, 16, . . . . are bridged over and fixedly supported. Similarly, in the upper straight staircase portion S3, between the outer plate 10 and the inner plate 11, three treads 14, 14, . . . , 16, . . . are bridged and fixedly supported.

In the winding staircase portion S2, six treads 14, 14, . . . and the same number of risers 16, 16, . are fixedly supported, and the inner ends (other ends) of the six footboards 14, 14, . . . As a result, in the circular staircase portion S2, the six treads 14, 14, . These treads 14, 14, . . . increase in order from the lower stage to the upper stage.

The footboards 14, 14, . . . , . The stepped treads 14, 14 are substantially rhombic plate members.

The risers 16, 16, .

Although not shown, on the rear surface (lower surface) of each tread plate 14, a riser fitting groove is formed by digging at a position near the end on the descending side in the ascending/descending direction of the stairs. The upper end of the lower riser 16 is fitted into the groove, and the lower end of the lower riser 16 is fixed to the rear surface of the lower tread 14 with screws, nails, or the like. The dimension from the tip of the footboard 14 to the position of the riser 16 (riser board fitting groove) is called "nose projection" and is, for example, 30 mm.

FIG. 2 shows the inner surface of each of the side plates 5 to 11. This inner surface has a plurality of tread grooves 20, 20, . . . are formed so as to be orthogonal to each other and into which the ends of the respective riser plates 16 are fitted. Each of the tread grooves 20 and each of the riser grooves 21 is formed by NC engraving of the inner surface of the plate material by, for example, an NC processing device (numerical control processing device).

To explain the tread groove 20, FIG. 2(a) shows the outer plate 5 of the lower straight step portion S1, and FIG. 2(b) shows the inner plate 6 of the same straight step portion S1. On the inner surfaces of the outer plate 5 and the inner plate 6, four tread grooves 20, 20, . . . formed parallel to each other. One end of each tread groove 20 is closed as a closed end, and the other end of each tread groove 20 is open to the end face of the side plates 5 and 6, and when the side plates 5 and 6 are constructed obliquely. , the tread grooves 20, 20, . . . are arranged horizontally.

2(c) shows the lower side plate 7 of the spiral staircase, FIG. 2(d) shows the middle side plate 8 of the spiral staircase, and FIG. 2(e) shows the upper side plate 9 of the spiral staircase. Two tread grooves 20, 20 for the 4th and 5th steps are provided on the lower plate 7 of the circular staircase, and four tread grooves 20 for the 5th to 8th steps are provided on the middle plate 8 of the circular staircase. , 20, . . . furthermore, two tread grooves 20, 20 for the eighth step and the ninth step are inclined in the plate width direction and displaced in the plate length direction on the upper side plate 9 of the circular staircase portion. are formed parallel to each other. In these side plates 7 to 9, most of the tread grooves 20, 20, . is open to The other end of each tread groove 20 is open to the end surface of the side plates 7 to 9, so that when the side plates 7 to 9 are constructed obliquely, the tread grooves 20, 20, . . . be.

Further, FIG. 2(f) shows the outer plate 10 of the upper straight step portion S3, and FIG. 2(g) shows the inner plate 11 of the same straight step portion S3. , four tread grooves 20, 20, . . One end of each tread groove 20 is closed as a closed end (the tread groove 20 for the 10th step in the outer plate 10 is open to the butt end surface), and the other end is closed to the butt end surface of the side plates 10 and 11 . , and the tread grooves 20, 20, . . . are arranged horizontally when the side plates 10, 11 are constructed obliquely.

The tread grooves 20, 20, . Each tread groove 20 has a groove width on the closed end side slightly larger than the thickness (for example, 36 mm) of the tread plate 14, and a groove width on the opposite open end side that is larger than that on the closed end side. It has a shape. When the ends of the tread plates 14 are fixed to the tread grooves 20, each tread plate 14 is fitted into the tread plate grooves 20 from the open end toward the closed end while the side plates 5 to 11 are installed obliquely. With the tip of the footboard 14 reaching the closed end, a wedge (not shown) is driven between the lower surface of the footboard 14 and the side surface of the lower groove of the footboard groove 20 to close the end of the footboard 14. are fixed to the side plates 5-11.

Further, the interval between the tread grooves 20, 20 vertically adjacent in the stair climbing direction corresponds to the height (rising dimension) between the vertically adjacent treads 14, 14, and is set to, for example, 200 mm.

On the other hand, to explain the riser grooves 21, a plurality of riser grooves 21, 21, . . . It is provided so as to be perpendicular to the groove 20 . One end (upper end) of each riser groove 21 communicates with a position spaced apart from the closed end by the above-mentioned protrusion size (for example, 30 mm) in one of the tread grooves 20, which is on the upper side during construction, and the other end. (lower end) is opened to the butt surfaces (lower ends) of the side plates 5 to 11 through the other tread groove 20, which is also on the lower side. When the side plates 5 to 11 are constructed obliquely, the riser plate grooves 21, 21, . . . are arranged vertically.

The digging depth of each riser groove 21 is the same as that of the tread groove 20, for example 10 mm, and the groove bottom is flush with the groove bottom of the tread groove 20. - 特許庁Each riser groove 21 is a narrow groove with a constant groove width, and the groove width is slightly larger than the thickness of the riser 16 (5.5 mm). When the riser 16 is fixed to the riser groove 21, the side plates 5 to 11 are installed obliquely, and the riser 16 is inserted into the riser groove 21 from its open end (lower end) to one side (upper side). The upper end of the riser 16 reaches the tread groove 20, and is fitted into the riser fitting groove on the lower surface of the tread 14 fitted in the tread groove 20. The lower end portion of the riser 16 is fixed to the back surface of the lower footboard 14 with screws, nails, or the like, so that the riser 16 is fixed between the upper and lower footboards 14 , 14 .

The outer plate 5 of FIG. 2(a) and the inner plate 6 of FIG. 2(b) are substantially symmetrical so that the tread grooves 20, 20, . . . and the riser plate grooves 21, 21, . formed. 2(f) and the inner side plate 11 of FIG. 2(g) are arranged so that the tread grooves 20, 20, . . . and the riser grooves 21, 21, . It is formed symmetrically.

Cutting of the overall shape of the seven side plates 5 to 11, engraving of the tread grooves 20, 20, . . . and riser plate grooves 21, 21, . , the cutting of the riser plate fitting grooves, and the cutting of the overall shape of the 13 riser plates 16, 16, . . . It is supposed to be a precut staircase. The side plates 5 to 11, the treads 14, 14, ... and the risers 16, 16, ... are combined for each stair and packed as a stair set. Assembled in S. FIG. 2 shows a combination of only the side plates 5 to 11 of the staircase set.

As shown in FIG. 2, each of the plurality of side plates 5 to 11 has a side plate construction position display symbol 23 indicating the construction position information of each side plate 5 to 11 of each tread groove 20 and riser groove 21. It is provided by the same engraving process as the process. Specifically, the side plate construction position display symbol 23 is divided by the tread grooves 20, 20, ... and the riser grooves 21, 21, ... on the inner surface side of each of the side plates 5 to 11, and in the construction state of the stairs S, each It is formed in a back side area 24 that is hidden from the front side of the staircase by the treadboard 14 and the riser board 16 fitted in the treadboard groove 20 and the riser board grooves 21, respectively. The back side region 24 is a region including not only the inner surfaces (surfaces) of the side plates 5 to 11 but also the groove inner surfaces (groove bottom surfaces and peripheral side surfaces in the grooves) of the tread groove 20 and the riser groove 21. In FIG. A back side area 24 of each of the side plates 5-11 is indicated by a multitude of points. FIG. 2 shows an embodiment in which side plate installation position indication symbols 23 are formed on the inner surfaces (surfaces) of the side plates 5 to 11 by digging in the same manner as the tread grooves 20 and riser grooves 21 are formed. Further, the processing position of the side plate construction position display symbol 23 is the lowermost position on the inner surface of the side plates 5 to 11 . The side plate construction position indication symbol 23 formed on the inner surface of the side plates 5 to 11 is preferably carved to a depth equal to or shallower than the groove depths of the tread groove 20 and the riser groove 21. preferable. The side plate construction position display symbol 23 may be anywhere in the back side region 24, and may be the groove inner surfaces of the tread groove 20 and the riser groove 21. As shown in FIG. When engraving the side plate construction position indication symbol 23 into the groove inner surfaces of the tread groove 20 and the riser groove 21, it is preferable to engrave the bottom of the groove.

The inner surface of each of the side plates 5 to 11 is dug into the side plate construction position indication symbol 23 at the same time as the tread groove 20 and the riser plate groove 21 are processed by the same NC processing device, or the tread plate groove 20 and the riser plate groove 21 are processed. It may be performed by an NC processing device different from the NC processing device or another processing device, or may be performed by the same NC processing device at the same time as the cutting of the side plates 5 to 11 and the excavation processing of the tread groove 20 and the riser plate groove 21. is selected.

Although not shown, on the back (lower surface) of the plurality of treads 14, 14, . , . . . are formed by engraving, respectively, on the rear surfaces of the risers 16, 16, . . . It is preferable that the tread construction position display symbol and the riser construction position display symbol are excavated to a depth (for example, about 0.5 mm) that does not affect the strength of the tread 14 and the riser 16, for example. Further, if the tread construction position display symbol is on the rear surface of the tread 14 and the riser construction position display symbol is also on the rear surface of the riser 16, the position of each of them does not matter.

The engraving of the construction position indication symbol on the footboard 14 is also performed simultaneously with the cutting of the footboard 14 and the engraving of the riser board fitting groove, or by using a separate processing device. Similarly, the construction position indication symbol for the riser 16 is also formed at the same time as the cutting of the riser 16 or by a separate processing device.

The side plate construction position display symbol 23, the tread construction position display symbol, and the riser construction position display symbol are used to identify the construction position of each member on the stairs S. In this embodiment, for example, FIG. The symbols shown in are used. That is, the lower straight staircase S1 of the round staircase S is denoted by "A", the round staircase S2 by "B", and the upper straight staircase S3 by "C".

The construction position indication symbols 23, 23 of the outer plate 5 and the inner plate 6 of the lower straight step portion S1 are both the same "A". Even if the construction position indication symbols 23, 23 of the outer plate 5 and the inner plate 6 are the same, which of the outer plate 5 and the inner plate 6 is different from the difference in the direction of the tread groove 20 and the riser plate groove 21. This is because the same symbol does not cause any trouble because it can be easily identified. Of course, different construction position indication symbols 23 may be formed on the outer plate 5 and the inner plate 6 so that they can be identified. For the same reason, the construction position display symbols of the outer plate 10 and the inner plate 11 of the upper straight step portion S3 are both the same "C".

In addition, for the same reason as above, the lower plate 7, the middle plate 8, and the upper plate 9 of the winding staircase portion S2 have the same construction position display symbol "B". Even if there is, the difference in the directions of the tread grooves 20 and the riser grooves 21 of the three side plates 7 to 9 makes it possible to determine their construction positions.

On the other hand, the tread construction position indication symbol formed on the back surface of the tread 14 and the riser construction location indication symbol formed on the back surface of the riser 16 are "A" for the lower straight staircase portion S1. , In addition, "B" is added to the round staircase portion S2, and "C" is added to the upper straight staircase portion S3. put in order. In other words, the three treads 14, 14, . . . and the risers 16, 16, . The treads 14, 14, ... and the risers 16, 16, . , .

Note that the display symbols shown in FIG. 3 are just an example, and any method may be used as long as the position of each member can be identified.

FIG. 4 shows a construction drawing 30 describing the entire winding staircase S and construction positions of the seven side plates 5-11. The construction drawing 30 is packed with the staircase set and carried to the construction site of the staircase S.

In the construction drawing 30, a stair plan view 30a showing the entire staircase S is shown on the right side of FIG. A side plate plan view 30b showing the seven side plates 5-11 marked with is shown in the upper left part of FIG. The side plate construction position display symbols attached to the side plate plan view 30b are written in the same positions and with the same shapes as the construction position display symbols 23 that are dug into the actual side plates 5-11. The figure shown in the lower left part of FIG. 4 is an enlarged view explaining the construction necessary for part of the side plate.

In the construction drawing 30, in addition to the side plate plan view 30b of the side plates 5 to 11 with the construction position indication symbols, a plan view showing the back side of the footboard and the riser with the construction position indication symbols is also described. You may

A construction method of the above-mentioned winding stairs S will be described. In the staircase set brought to the construction site, at least seven side plates 5 to 11, 12 treads 14, 14, . . . and 13 risers 16, 16, . After unpacking the stair set, the side plates 5 to 11 are first taken out and fixed to the pillars 1 to 3 of the stair space with screws or the like.

Specifically, the outer plate 5 of the lower straight step portion S1 is fixed between the left front pillar 2 and the floor of the lower floor, and the inner plate 6 is fixed between the core pillar 1 and the same floor. . Further, the outer plate 10 of the upper straight step portion S3 is fixed between the right front pillar 2 and the floor of the upper floor, and the inner plate 11 is fixed between the core pillar 1 and the floor of the upper floor. Further, the lower plate 7 of the circular staircase portion S2 is fixed between the left front pillar 2 and the left rear pillar 3, the middle plate 8 is fixed between the three rear pillars 3, 3, . It is fixed between the rear column 3 and the right front column 2.

At that time, since the construction position display symbol 23 for the staircase S is formed by engraving on the inner surface of each of the seven side plates 5 to 11, the plurality of side plates 5 to 11 are arranged in the stair ascending/descending direction. Even if the side plates 5 to 11 are separated when the stair set is unpacked, the construction position of each side plate 5 to 11 can be immediately determined by looking at the construction position information display symbol 23 on the inner surface, Even if there are a plurality of side plates 5 to 11, each construction position can be identified quickly, and there is no confusion about the construction position.

That is, in particular, in the round staircase S in which the straight staircases S1 and S3 are connected to the round staircase portion S2, the side plates 5 to 11 have different shapes between the round staircase portion S2 and the straight staircase portions S1 and S3. The shapes of the plurality of side plates 7 to 9 are slightly different in the circular staircase portion S2. In this way, the round staircase S has a plurality of side plates 5 to 11 with different shapes in the round staircase portion S2 and the straight staircase portions S1 and S3, so it is difficult to quickly identify the construction positions of the side plates 5 to 11 only by their shapes. becomes. However, even in such a winding staircase S having a plurality of side plates 5 to 11 with different shapes, the construction position can be easily determined from the construction position indication symbol 23 provided on the inner surface of the side plates 5 to 11. There is no confusion about the position. Therefore, even if the winding staircase S is a precut staircase, the construction can be easily performed, and the construction time can be shortened.

Moreover, the construction drawing 30 included in the stair set also includes the same side plate plan view 30b as the plurality of side plates 5 to 11 on which the construction position indication symbols are formed. Since the plurality of side plates 5 to 11 with entries are described as they are as plan views, the side plate plan view 30b described in this construction drawing 30 and the actual side plates 5 to 5 with the side plate construction position indication symbols 23 processed are shown. 11, and confirming the construction position of each of the side panels 5 to 11 in the entire staircase S, the side panels 5 to 11 can be constructed accurately at the construction position. As a result, the construction efficiency of the stairs S is improved, the construction can be performed more easily and quickly, and the reliability of the construction work is also improved.

When a plurality of side plates 5 to 11 are constructed in this manner, the tread grooves 20, 20, . . . 20, . are located respectively.

Next, the treads 14, 14, . . . are constructed. In the lower straight stair portion S1, both ends of the treads 14, 14, . . . Then, from the open end of each tread plate groove 20, a wedge is driven between the lower groove side surface of the tread plate groove 20 and the lower surface of the tread plate 14 to fix each tread plate 14.例文帳に追加In the upper straight staircase portion S3, the treads 14, 14, . . .

In the circular staircase portion S2, the outer ends (one end portions) of the treads 14, 14, . . . ) is inserted to the closed end, and a wedge is driven from the open end of each tread groove 20 between the lower groove side surface and the lower surface of each tread plate 14 to fix the outer end of the tread plate 14 . The inner ends (other ends) of the plurality of footboards 14, 14, . . .

After that, the risers 16, 16, . . . are constructed. In the lower straight staircase portion S1, a plurality of riser plates 16, 16 are formed in the plurality of riser plate grooves 21, 21, . . . , . . . are fitted to the closed end of the upper end, the upper end of each riser 16 is fitted into the riser fitting groove of the upper tread 14, and the lower end is screwed to the back surface of the lower tread 14. or fix with nails, etc. Also in the upper straight staircase portion S3, a plurality of riser plates 16, 16 are fixed between the outer plate 10 and the inner plate 11 facing each other in the stair width direction.

In the winding staircase portion S2, the outer end portions of the plurality of riser plates 16, 16, . . . (one end) is fitted to the closed end of the upper end, the upper end of each riser 16 is fitted into the riser fitting groove of the upper footboard 14, and the lower end is screwed to the back surface of the lower footboard 14. Fix with nails, etc.

and the risers 16, 16, . . . , . Since the riser construction position display symbols indicating the construction position information are provided on the back surface of the riser 16 by digging, the plurality of treads 14, 14, ... and the risers 16, 16, ... The construction position can be easily identified by the construction position display symbol, eliminating confusion. Moreover, like the side plates 5 to 11, the construction drawing 30 also shows the same drawings as the plurality of footboards 14, 14, . . . and the risers 16, 16, . In this case, if the drawing of the treads and risers described in this construction drawing 30 is collated with the actual treads 14, 14, . . . and the risers 16, 16, . and risers 16, 16, . be able to construct. As a result, the construction efficiency of the stairs S is improved, and the construction can be performed more easily and quickly.

The winding staircase S is constructed as described above. In the winding staircase S after construction, the construction position display symbols 23 processed on the side plates 5 to 11, the construction position display symbols processed on the treads 14 and the risers 16, respectively, are used to ascend and descend the stairs S. If it enters the eyes of a user who does not want to use it, it will cause an aesthetic sense of incongruity or hinder the design. However, the construction position indication symbol 23 of each of the side plates 5 to 11 is formed in the back side region 24 defined by the tread groove 20 and the riser plate groove 21 on the inner surface side of the side plates 5 to 11, and this back side region 24 is the staircase. In the construction state of S, the treadboard 14 and the riser board 16 fitted in the treadboard groove 20 and the riser board groove 21, respectively, are positioned to be hidden from the front side of the stairs. In addition, the construction position indication symbol of each tread 14 is processed on the back surface (lower surface) of the tread 14, and the construction location indication symbol of each riser 16 is also formed on the back of the riser 16, and each tread 14 and each The rear surface of the riser 16 is also located at a position where it is hidden from the front side of the stairway when the stairway S is constructed. Therefore, the construction position information display symbols 23 of the side plates 5 to 11 and the construction position information display symbols of the treads 14 and the riser 16 are hidden from the front side of the stairs S and are not exposed on the front side. As a result, it is possible to prevent the appearance of the staircase S from being inconsistent and to improve its design.

Further, the construction position display symbols 23 on the inner surfaces of the side plates 5 to 11 and the construction position display symbols on the back surfaces of the treads 14 and the risers 16 are formed by engraving these plate materials. Therefore, in the side plates 5 to 11, the tread grooves 20, 20, . . . and the riser grooves 21, 21, . The construction position display symbol 23 can be dug into. In this way, by processing the construction position display symbol 23 on the side plates 5 to 11 simultaneously with the processing of the tread groove 20 and the riser plate groove 21 on the same surface, for example, it can be automatically processed by an NC processing device. Not only can man-hours and labor in the manufacturing process be reduced, but also human error when processing the construction position display symbol 23 can be reduced. Further, even in the treads 14 and the riser 16, it is possible to engrave the construction position display symbols at the same time as processing the plate material, and the same effect as the case of the side plates 5 to 11 can be obtained. can.

(Other embodiments)
In the above embodiment, the construction position indication symbols of the footboard 14 and the riser 16 are both formed by engraving, but they can also be formed by other methods such as printing. However, it is preferable to form the construction position indication symbol by engraving because it can be automatically formed by an NC processing device to reduce man-hours and labor in the manufacturing process and human error.

In the above embodiment, the precut staircase is a winding staircase S in which two straight staircases S1 and S3 on the lower side and the upper side are connected to one 180° winding staircase S2. A spiral staircase may be used, or a straight staircase may be used. Another type of spiral staircase is a spiral staircase in which two straight staircases on the lower and upper sides are connected to one 180° spiral staircase as in the embodiment, but the upper and lower halves of the spiral staircase are connected. A circular staircase in which one of the steps is a landing with a single tread, a circular staircase in which two straight staircases on the lower and upper sides are connected to one 90° circular staircase, two 90° circular staircases on the top and bottom There are various types such as a spiral staircase with one straight staircase connected in between and a spiral staircase with one 90° spiral staircase connected to one straight staircase.

INDUSTRIAL APPLICABILITY The present invention facilitates the construction of precut stairs and shortens the construction time, so it is extremely useful and has high industrial applicability.

S spiral staircase S1 lower straight staircase S2 spiral staircase S3 upper straight staircase 5 to 11 side plate 14 tread 16 riser 20 tread groove 21 riser groove 23 side plate construction position display symbol 24 back side area 30 construction drawing 30a stair plan view 30b Plan view of side plate

Claims (5)

A plurality of side plates constructed so as to be continuous in the ascending/descending direction of the stairs;
In the inner surface of each side plate, a tread groove into which the end of the tread is fitted, and a riser groove continuing perpendicular to the tread groove and into which the end of the riser is fitted are formed by digging. A precut staircase being formed,
On the inner surface side of each of the side plates, the region defined by the tread groove and the riser groove and hidden from the front side of the stair by the tread plate and the riser fitted in the tread groove and the riser groove, respectively, in the construction state of the stair. 1. A pre-cut staircase, characterized in that a side plate construction position display symbol indicating construction position information of the side plate is formed by engraving in a back side region including groove inner surfaces of the tread groove and the riser groove. The precut staircase of claim 1,
A precut staircase, wherein the precut staircase is a wraparound staircase having a wraparound staircase portion and a straight staircase portion connected to the wraparound staircase portion. In the precut staircase of claim 1 or 2,
A tread construction position display symbol indicating construction position information of the tread is provided on the back surface of the tread, and a rise board construction position display symbol indicating construction position information of the rise board is provided on the back of the rise board. Features pre-cut stairs. A method for constructing a precut staircase according to any one of claims 1 to 3,
Prepare a construction drawing of stairs in which side plates having the same construction position indication symbol as the side plate construction location indication symbol formed on a plurality of side plates are described,
A method for constructing a precut staircase, wherein the side plate construction position indication symbol of each side plate is collated with the construction position indication symbol of the side plate of the construction drawing at the time of construction, and the side plate is constructed. A method of manufacturing a precut staircase according to any one of claims 1 to 3, comprising:
1. A method of manufacturing a pre-cut staircase, characterized by forming a side plate position information display symbol on the side plate at least simultaneously with forming tread grooves and riser grooves on the side plate.

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