JP4758090B2 - Stair side plate assembly structure - Google Patents

Description

  The present invention relates to a side plate assembly structure and a side plate assembly method for a staircase in which a plurality of side plates arranged along the ascending / descending direction of a staircase are assembled in a state in which edges of adjacent side plates are joined together.

  In the wooden interior staircase of a two-story and three-story house, taking into account the installation space, etc., a straight staircase and a surrounding staircase, such as a folding staircase that changes its direction by 180 ° in the middle and a bent staircase that changes its direction by 90 ° In some cases, a staircase structure with surrounding staircases combined with

  On the other hand, in recent housing construction technology, when assembling indoor stairs, in order to improve the workability of construction, most of the members constituting the stairs are cut in advance (pre-cut) on the factory side, and the pre-cut material is used. Many pre-cut methods are used, which are carried into the construction site and assembled.

  As means for constructing a staircase structure with a surrounding staircase by a pre-cut method, for example, those shown in Patent Documents 1 to 3 below are well known. This staircase structure constitutes a turn-up staircase in which a turning staircase is assembled at the upper end of the lower straight staircase and an upper straight staircase is assembled in the turning staircase.

In this staircase structure, the upper edge of the outer plate (lower straight outer plate) in the lower staircase is fixed to a structural material such as a column, and the edge of the outer plate (outer side plate) in the lower staircase is It is fixed to the column in a state of being butted against the upper edge of the outer plate of the staircase.
Patent No. 2506204 Japanese Patent No. 3059660 Patent No. 3061250

  In the staircase structure as described above, when a gap is formed at the abutting portion between the upper edge of the lower right outer plate and the edge of the outer side plate, the appearance deteriorates. For this reason, it is necessary to accurately match the edge of the outer side plate with the upper edge of the lower right outer plate without any gap, but the structure of the surrounding staircase is particularly complicated, and the relationship between the components is extremely complicated. Therefore, when actually constructing on the site, it is difficult to assemble the both side plates with good positional accuracy, so that the edge of the outer side plate matches the upper edge of the lower outer plate accurately. I have a problem.

  An object of the present invention is to solve the problems of the prior art described above, and to provide a side plate assembly structure and a side plate assembly method for a staircase that can be assembled with good positional accuracy in a state in which adjacent side plates are accurately joined without gaps. To do.

  In order to achieve the above object, the present invention is summarized as follows.

[1] A side plate assembly structure of a staircase in which a plurality of side plates arranged along the elevating direction of the staircase are assembled in a state in which edges of adjacent side plates are joined to each other,
The connecting pin is attached to the joining edge of one side plate among adjacent side plates so that the tip side protrudes,
A pin insertion hole into which the connecting pin can be inserted is provided at the joining edge of the other side plate, and a fastening tool is fitted in correspondence with the insertion hole,
The connecting pin has a latching head at its tip,
The fastener includes a disk-shaped casing that is rotatable about an axis, an opening provided in a peripheral wall of the casing, and communicates with the opening and is provided in the peripheral wall of the casing along the circumferential direction. A slit, and
With the connecting pin inserted into the pin insertion hole and the latching head of the pin tip accommodated in the casing via the opening, the casing is rotated so that the latching head is The side plate assembly structure of a staircase, wherein the side edges of the one and other side plates are attracted and connected to each other by being hooked to both side edges of the slit.

  [1a] The staircase side plate assembly structure according to the preceding item 1, wherein the connecting pin has a base end screwed into and fixed to a joining end edge of one side plate.

  [1b] The staircase according to item 1 above, wherein a circular mounting recess that communicates with the pin insertion hole is provided on a plate surface on the joining edge side of the other side plate, and the fastener is fitted in the recess. Side plate mounting structure.

  [1c] The side plate assembly structure for a staircase according to item 1, wherein the side plate is assembled in a state where one side plate and the other side plate are abutted against each other.

[2] A plurality of step plates are attached to the side surface of the side plate at intervals in the elevation direction,
The staircase side plate assembly structure according to the preceding item 1, wherein the fastening tool is disposed on the lower surface side of the step plate in the side plate.

  [2a] The side plate assembly structure for a staircase according to item 2 above, wherein a step plate mounting groove is provided on a side surface of the side plate, and an edge of the step plate is inserted into the groove.

[3] A kick plate is vertically provided between an upper step side tip portion and a lower step plate base end portion between each of the plurality of step plates,
The staircase side plate assembly structure according to the preceding item 2, wherein the fastening tool is disposed on the back surface side of the kick plate in the side plate.

  [3a] The side plate mounting structure for a staircase according to the preceding item 3, wherein a kick plate mounting groove is provided on a side surface of the side plate, and an edge of the kick plate is inserted into the groove.

[4] It has a straight staircase and a surrounding staircase, and the straight staircase is provided with an outer plate on the outside, and the turning staircase is provided with an outer side plate on the outside,
Either one of the outer plate of the straight staircase and the outer side plate of the surrounding staircase is configured as the one side plate, and the remaining one is configured as the other side plate. Side plate assembly structure for stairs as described in 1.

[4a] It has a straight staircase and a rotating staircase, and the rotating staircase has an outer side plate on the outside.
The outer side plate includes an outer side one side plate, an outer side front side plate, and an outer side other side plate,
The staircase side plate assembly structure according to the preceding item 1, wherein the outer one side plate is configured as the one side plate and the outer front side plate is configured as the other side plate.

[4b] It has a straight staircase and a rotating staircase, and the rotating staircase has an outer side plate on the outside.
The outer side plate includes an outer side one side plate, an outer side front side plate, and an outer side other side plate,
2. The side plate assembly structure for a staircase according to claim 1, wherein the outer front side plate is configured as the one side plate, and the outer other side plate is configured as the other side plate.

[5] It has a straight staircase and a surrounding staircase, and the straight staircase is provided with an inner plate on the inside, and the turning staircase is provided with an inner side plate on the inner side,
Either one of the inner plate of the straight staircase and the inner side plate of the surrounding staircase is configured as the one side plate, and the remaining one is configured as the other side plate. Side plate assembly structure for stairs as described in 1.

[5a] It has a straight staircase and a rotating staircase, and the rotating staircase has an inner side plate on the inside.
The inner side plate has an inner side one side plate, an inner side front side plate, and an inner side other side plate,
The staircase side plate assembly structure according to the preceding item 1, wherein the inner one side plate is configured as the one side plate and the inner front side plate is configured as the other side plate.

[5b] It has a straight staircase and a rotating staircase, and the rotating staircase has an inner side plate on the inside.
The inner side plate has an inner side one side plate, an inner side front side plate, and an inner side other side plate,
The staircase side plate assembly structure according to item 1, wherein the inner front side plate is configured as the one side plate, and the inner side other side plate is configured as the other side plate.

[6] The joint edge of the one side plate is provided with a lower notch joint having a notch recess on the lower side and a convex portion on the upper side, and a notch recess on the upper side at the joint edge of the other side plate. An upper notch joint having a convex portion on the side is provided,
5. The side plate assembly structure for a staircase according to the preceding item 4, wherein the one side plate and the other side plate are assembled in a state where the notch joint portions are joined to each other.

[7] A method for assembling a side plate of a staircase, wherein a plurality of side plates arranged along the elevating direction of the staircase are assembled in a state in which edges of adjacent side plates are joined to each other,
Preparing a connecting pin having a hooking head at the tip;
A fastener having a disk-shaped casing, an opening provided in a peripheral wall of the casing, and a slit provided in the peripheral wall of the casing along the circumferential direction is prepared. Process,
The step of attaching the connecting pin so that the tip side protrudes to the joining edge of one side plate among adjacent side plates;
Forming a pin insertion hole into which the connecting pin can be inserted at the joining edge of the other side plate, and fitting a fastening tool corresponding to the insertion hole;
The connecting pin is inserted into the pin insertion hole, and the casing is rotated in a state where the latching head of the pin tip is accommodated in the casing via the opening, and the latching head is A step of assembling the side plates of the staircase, comprising the step of attracting and connecting the edges of the one and the other side plates to each other by being hooked to both side edges of the slit.

  According to the staircase side plate assembly structure according to the invention [1], a connecting pin is attached to one side plate, a fastening tool is attached to the other side plate, and the connecting pin is inserted into the fastening tool. Since the connecting pin is pulled toward the fastening tool by rotating, the one and the other side plates can be assembled with high positional accuracy in a state where they are joined to each other without a gap.

  According to the side plate assembly structure of the staircase according to the invention [2], the fastener is arranged on the lower side of the step plate. Therefore, after the construction, the fastener is concealed by the step plate and has a good aesthetic appearance. Is maintained.

  According to the side plate assembly structure of the staircase according to the invention [3], the fastener is arranged on the back side of the kick plate, so that after the construction, the fastener is concealed by the kick plate and has a good aesthetic appearance. Is maintained.

  According to the staircase side plate assembly structure according to the invention [4], the outer plate of the straight staircase and the outer side plate of the surrounding staircase can be assembled with high positional accuracy.

  According to the staircase side plate assembly structure according to the invention [5], the inner plate of the straight staircase and the inner side plate of the surrounding staircase can be assembled with high positional accuracy.

  According to the side plate assembly structure of the staircase according to the invention [6], the upper side and the lower side notch joints are formed at the joining edges of the one side plate and the other side plate, respectively. Positioning between the two outer plates can be performed with high accuracy simply by engaging the portions in the phased joining state, and the assembly work can be performed efficiently and smoothly.

  According to the invention [7], it is possible to provide a method for assembling the side plates of the staircase having the above-described effects.

  1 and 2 are views showing a staircase structure according to an embodiment of the present invention. As shown in the figure, the staircase structure of this embodiment is assembled by a precut method, and is a folded staircase having a lower straight staircase (10), an upper straight staircase (20), and a turning staircase (30). It is configured with.

  In the present embodiment, as will be described in detail later, the outer plates (11a) and (51a) of the lower straight staircase (10) and the rotating staircase (30) are connected to each other by the connecting metal fitting (100). The outer plates (71a) and (21a) of the stairs (30) and the upright stairs (20) are connected to each other by a connecting metal fitting (100).

  First, as shown in FIGS. 1 to 4, the lower straight staircase (10) includes a long plate-shaped outer plate (lower straight outer plate 11a), an inner plate (lower straight inner plate 11b), and both side plates (11a) ( 11b) includes a plurality of step plates (18) and a plurality of kick plates (19).

  On the inner surface side of the lower right outer plate (11a), a plurality of step plate mounting grooves (12a) are horizontally arranged at predetermined intervals in the vertical direction and the horizontal direction corresponding to the mounting position of the step plate (18). Is formed. Each step plate mounting groove (12a) is configured such that the rear end side thereof is opened and the end edge of the step plate (18) can be inserted from the rear side of the lower right outer plate (11a). Further, on the inner side surface of the lower right outer plate (11a), between the adjacent step plate mounting grooves (12a), the lower step plate mounting groove (12a) extends from the tip of the upper step plate mounting groove (12a). A plurality of kick plate mounting grooves (13a) are formed vertically to the base end. Each kick plate mounting groove (13a) is configured such that the lower end side thereof is opened and the edge of the kick plate (19) can be inserted from the lower side of the lower right outer plate (11a).

  As shown in FIGS. 8 and 9, the upper edge of the lower right outer plate (11 a) is formed such that the upper side is notched, and the notched recess (14 a) is formed on the upper side and the projecting part (15 a) is formed on the lower side. It is formed as an upper notch joint (10a). Furthermore, the step part between the recessed part (14a) and the convex part (15a) in a notch junction part (10a) is comprised as an engagement step part (16a).

  On the inner surface side of the lower straight inner plate (11b), the corrugated plate mounting groove (12b) and the kick-in corresponding to the step plate mounting groove (12a) and the kick plate mounting groove (13a) of the lower straight outer plate (11a). A plate mounting groove (13b) is formed.

  Further, the upper edge of the lower straight inner plate (11b) is formed so that the upper side is cut out, and as an upper cutout joint (10b) having a cutout recess (14b) on the upper side and a projection (15b) on the lower side. Is formed. Furthermore, the step part between the recessed part (14b) and convex part (15b) in a notch junction part (10b) is comprised as an engagement step part (16b).

  The engagement step portion (16b) of the notch joint portion (10b) is formed to coincide with the upper end edge of the uppermost step plate mounting groove (12b). Further, as will be described later, the uppermost step plate mounting groove (12b) is inserted with the first step plate (31) in the turning step (30), and the uppermost step plate mounting groove (13b) is The 1st kick board (41) in the surrounding staircase (30) is inserted. In other words, the uppermost step plate mounting groove (12b) and the kick plate mounting groove (13b) are different from the first step plate mounting groove (31b) and the first kick plate mounting groove (41b) in the rotating staircase (30). It is also used.

  In this embodiment, the lower right outer plate (11a) and the lower right inner plate (11b) are fixed to a house structure such as the columns (1) and (2) so as to face each other.

  Further, both side edges of the step plate (18) are inserted and fixed to the opposite step plate mounting grooves (12a) and (12b) of the inner and outer side plates (11a) and (11b) from the rear side, and the opposite kick plates Both side edges of the kick plate (19) are inserted into and fixed to the mounting grooves (13a) and (13b) from below.

  As shown in FIGS. 1, 2 and 5, 6, the upright staircase (20) includes a long plate-shaped outer plate (upper straight outer plate 21 a), inner plate (upper straight inner plate 21 b), and both side plates ( 21a) (21b) are provided with a plurality of step plates (28) and a plurality of kick plates (29).

  On the inner surface side of the upper right outer plate (21a) and the upper right inner plate (21b), step plate mounting grooves (22a) (22b) and kick plate mounting grooves (23a) (23b) are formed in the same manner as described above. ing.

  As shown in FIGS. 10 and 11, the lower end edge of the upper right outer plate (21a) is formed such that the lower side is notched, with the convex portion (24a) on the upper side and the notched concave portion (25a) on the lower side. It is comprised as a lower notch junction part (20a) which has. Furthermore, the step part between the convex part (24a) and the recessed part (25a) in the notch joint part (20a) is comprised as an engagement step part (26a).

  As shown in FIGS. 10 and 11, the tip edge of the lowermost step plate mounting groove (22a) in the upper right outer plate (21a) is arranged to coincide with the tip edge of the convex portion (24a). At the same time, the lower end edge of the tip end portion of the step plate mounting groove (22a) is arranged so as to coincide with the engagement step portion (26a). Further, the lowermost kick plate mounting groove (23a) is arranged such that the front side edge thereof coincides with the tip edge of the recess (26a) of the notch joint (20a).

  As shown in FIG. 6, the lower edge of the upper straight inner plate (21 b) is formed so that the lower side is notched, and has a notch on the upper side and a notch recess (25 b) on the lower side. It is comprised as a junction part (20b).

  In addition, the front-end | tip of the lowest step board attachment groove | channel (22b) in an upper direct inner side board (21b) is arrange | positioned corresponding to the edge of a junction part (20b). Furthermore, the lowermost kick plate mounting groove (23b) is disposed along the edge of the cutout recess (25b) of the cutout joint (20b).

  The upper right outer plate (21a) and the upper right inner plate (21b) are fixed to a house structure such as the columns (1) and (2) so as to face each other.

  Further, both side edges of the step plate (28) are inserted and fixed to the opposite step plate mounting grooves (22a) and (22b) of the inner and outer side plates (21a and 21b) from the rear side, and the opposite kick plates Both side edges of the kick plate (29) are inserted and fixed to the mounting grooves (23a) and (23b) from below.

  As shown in FIGS. 1 to 7, the turning staircase (30) is of a five-stage type, and includes first to fifth step plates (31) to (35) and first to fifth kick plates. (41) to (45), three outer side plates (51a) (61a) (71a) disposed around the surrounding staircase (30), and a central column (1 ) And three inner side plates (51b) (61b) (71b) arranged around the outer periphery.

  The outer side plate includes an outer one side plate (51a) arranged along one side surface on the outer periphery of the rotating staircase (30), an outer front side plate (61a) arranged along the front side surface, and the other side surface. And an outer peripheral side plate (71a) disposed along the outer periphery.

  As shown in FIGS. 8 and 9, the outer one side plate (51a) is disposed along the upper edge of the lower right outer plate (11a), and the edge (lower edge) side is the lower notch. It is comprised as a junction part (50a). The notched joint (50a) is formed with a convex portion (54a) on the upper side and a notched concave portion (55a) on the lower side so that the lower side is notched. Furthermore, the step part between the convex part (54a) and the recessed part (55a) in a notch junction part (50a) is comprised as an engagement step part (56a).

  Further, first and second step plate mounting grooves (31a) (32a) are formed on the inner surface side of the outer one side plate (51a) so as to extend in the horizontal direction. The rear ends of the step plate mounting grooves (31a) and (32a) are opened, and the end edges of the first and second step plates (31) and (32) can be inserted from the open ends.

  The tip end portion of the first step plate mounting groove (31a) is disposed in the convex portion (54a) of the notch joint portion (50a) in the outer one side plate (51a). Specifically, the tip edge of the first step plate mounting groove (31a) is disposed so as to coincide with the tip edge of the convex portion (54a), and the lower end edge of the tip portion of the step plate mounting groove (31a) is engaged. It arrange | positions so that it may correspond with a step part (56a).

  Further, first and second kick plate mounting grooves (41a) and (42a) extending downward from the tip end portions of the step plate mounting grooves (31a) and (32a) are formed on the inner surface side of the outer side plate (51a). Yes. Each kick plate mounting groove (41a) (42a) is opened at its lower end, and the edges of the first and second kick plates (41) (42) can be inserted from the lower side of the outer side plate (51a). It is configured as follows.

  Here, the first kick plate mounting groove (41a) is arranged such that the front edge thereof coincides with the tip edge of the recess (56a) of the notch joint (50a).

  An assembly groove (57a) extending perpendicularly to the end portion (upper end portion) is formed on the inner surface side of the outer one side plate (51a).

  The outer one side plate (51a) is assembled to the outer plate (11a) of the lower straight staircase (10) via the connecting metal fitting (100).

  As shown in FIG. 18, the connection fitting (100) has a connection pin (110) and a fastener (120).

  The connecting pin (110) is provided with a screw-in part (111) having a screw engraved on the outer periphery thereof on the base end side and a latching head part (112) on the distal end side.

  The fastening tool (120) is configured with a substantially disc-shaped or substantially cylindrical casing (121), and an opening portion (12) into which the hooking head (112) can be inserted into the peripheral wall of the casing (121). 122) is formed. Furthermore, as shown in FIG. 21, a slit (123) whose one end communicates with the opening (122) is formed in the peripheral wall of the casing (121) so as to extend along the circumferential direction. Both side edges (124) (124) of the slit (123) are formed such that the radial thickness gradually increases from one end side toward the other end side along the circumferential direction. In addition, a cross groove driver engaging groove (125) capable of engaging a driver's shaft is formed on the upper end surface of the casing (121).

  As shown in FIGS. 19 to 21, the connecting pin (110) of the connecting metal fitting (100) has a threaded portion (111) on the base end side that is convex at the notch joint (10a) of the lower right outer plate (11a). It is screwed and fixed to the upper end surface of the portion (15a), and is arranged so that the front end side of the connecting pin (110) protrudes from the front end surface of the convex portion (15a). The method of fixing the connecting pin (110) to the lower right outer plate (11a) is not limited to the above method. For example, an anchor member such as a nut is embedded in the lower right outer plate (11a) and the anchor member is fixed. The connecting pin (110) may be fixed by screwing or the like.

  A circular mounting recess (130) is formed on the inner side surface of the outer one side plate (51a) at a position corresponding to the connecting pin (110). The mounting recess (130) is disposed at a position lower than the first step plate mounting groove (31a) and at a position beyond the first notch plate mounting groove (41a) from the notch recess (55a).

  Furthermore, a pin insertion hole (131) into which the pin (110) can be inserted corresponding to the connecting pin (110) is formed on the end surface of the notch recess (56a) in the notch joint (50a) of the outer side plate (51a). Is formed. The pin insertion hole (131) communicates with the side surface of the mounting recess (130) through the lower side (outside) of the first kick plate mounting groove (41a).

  Then, the casing (121) of the fastener (120) is fitted into the mounting recess (130) of the outer one side plate (51a) so as to be rotatable about its axis. At this time, the opening (122) of the casing (121) is arranged corresponding to the pin insertion hole (121), and the upper end surface (driver engagement groove 125) of the casing (121) 51a) is disposed so as to be exposed on the inner surface side.

  In this state, as shown in FIG. 22 (a), the outer one side plate (51a) is phase-joined with the notch joining portion (50a) to the notch joining portion (10a) of the lower right outer plate (11a). At the same time, the distal end side of the connecting pin (110) is inserted into the pin insertion hole (131), and the hooking head (112) of the pin tip is disposed in the casing (121) through the opening (122). .

  Furthermore, as shown in FIG. 22 (b), the casing (121) rotates around the axis in the mounting recess (130) through a screwdriver fitted to the screwdriver engagement groove (125) of the fastener (120). Is done. As a result, the latching head (112) of the connecting pin (110) is guided into the slit (123), and the latching head (112) is latched to the side edges (124) and (124) of the slit. . At this time, since both side edge portions (124) and (124) of the slit are formed so as to gradually increase in thickness, both side edge portions (124) and (124) of the slit move in the circumferential direction along the latching head portion (112). Accordingly, the latch head (112) is attracted to the fastener (120). As a result, the outer one side plate (51a) is drawn to the lower right outer plate (11a), and the notch joint portions (10a) and (50a) are accurately joined without a gap.

  In this way, the outer one side plate (51a) is fixed to the support column (2) by a fixing tool such as a screw or a nail while being joined to the lower right outer plate (11a) without a gap. Thus, the outer one side plate (51a) is arranged along one side surface of the turning step (30).

  As shown in FIG. 7, an assembly protrusion (60a) is formed at one end edge of the outer front side plate (61a) corresponding to the assembly groove (57a) of the outer side plate (51a). Yes.

  On the inner surface side of the outer front side plate (61a), second to fourth step plate mounting grooves (32a) to (32a) extending in the horizontal direction corresponding to the second to fourth step plates (32) to (34). 34a) is formed, and third and fourth kick plate mounting grooves (43a) (44a) extending vertically downward from the tips of the third and fourth step plate mounting grooves (33a) (34a) are formed. ing. Further, a vertically extending assembly groove (67a) is formed at the other end of the outer front side plate (61a).

  In the present embodiment, the second step plate attachment groove (32a) is formed in both the outer one side plate (51a) and the outer front side plate (61a). Further, the fourth step plate mounting groove (34a) is formed in both the outer front side plate (61a) and the outer other side plate (71a).

  The outer front side plate (61a) is fixed to the support column (2) in a state where the assembly convex portion (60a) is inserted into the assembly groove (57a) of the one side plate (51a). Thus, the outer front side plate (61a) is disposed along the front side surface of the rotating staircase (30).

  As shown in FIG. 5, the other outer side plate (71a) is disposed along the lower end edge of the upper right outer plate (21a), and the other end side (upper end side) is the upper notch joint (70a). ). As shown in FIG. 10 and FIG. 11, the notch joint (70a) is formed with a notch recess (74a) on the upper side and a protrusion (75a) on the lower side so that the upper side is notched. Furthermore, the step part between the recessed part (74a) and the convex part (75a) in a notch junction part (70a) is comprised as an engagement step part (76a).

  Further, on the inner side surface of the outer side plate (71a), the fourth and fifth step plate mounting grooves (34a) extending in the horizontal direction corresponding to the mounting positions of the fourth and fifth step plates (34) and (35). ) (35a) and a fifth kick plate mounting groove (45a) extending vertically downward from the tip of the fifth step plate mounting groove (35a).

  Further, on one end edge side (lower end edge side) of the outer periphery side plate (71a), an assembly protrusion (77a) is formed corresponding to the assembly groove (67a) of the outer front side plate (61a).

  The outer other side plate (71a) is joined to the upper right outer side plate (21a) using the same connecting metal fitting (100) as in FIGS. It is arranged along the side surface.

  That is, the connecting pin (110) is screwed and fixed to the upper end surface of the convex portion (75a) in the notched joint portion (70a) of the outer side outer plate (71a).

A mounting recess (130) is formed on the inner side surface of the upper right outer plate (21a), and a pin is inserted into the end surface of the notch recess (26a) in the notch joint portion (20a) of the upper right outer plate (21a). A hole (131) is formed. The mounting recess (130) has a first kick plate mounting groove (23a) at a position below the first step plate mounting groove (22a) in the upper right outer plate (21a) and from the notch recess (25a). It is formed at a position beyond .
A circular mounting recess (130) is formed on the inner side surface of the outer one side plate (51a) at a position corresponding to the connecting pin (110). The mounting recess (130) communicates with the side surface of the mounting recess (130) through the lower side (outside) of the first kick plate mounting groove (23a).

  In this state, the upper right outer plate (21a) is phase-joined to the notch joint portion (70a) of the other side plate (71a) with the notch joint portion (20a) rotating outward, and at the same time, the connecting pin (110) is Inserted into the pin insertion hole (131), the latching head (112) of the pin tip is disposed in the casing (121) through the opening (122) (see FIG. 21 (a)).

  Further, when the casing (121) is rotated around the axis in the mounting recess (130), the latching head (112) of the connecting pin (110) is guided into the slit (123) and latched. The head (112) is hooked on both side edges (124) (124) of the slit, the hooking head (112) is pulled toward the fastener (120), and the upper right outer plate (21a) is Around the other side plate (71a), the two notch joints (20a) and (70a) are accurately joined without a gap (see FIG. 21 (b)).

  In this way, the upper right outer plate (21a) is fixed to the support column (2) by a fixing tool such as a screw or a nail while being joined to the outer side plate (71a) without any gap.

  On the other hand, as shown in FIGS. 12 to 16, the inner side plates are the inner one side plate (51b) and the inner front side plate arranged on the three surfaces around the central column (1) at the center of the turning step (30). (61b) and an inner side other side plate (71b).

  The inner one side plate (51b) is disposed on the side surface (one side surface) on the lower straight staircase side of the center column (1), and the lower end is the upper notch joint ( 10b) is fixed to the central column (1) in a state of being fitted into the notch recess (14b).

  A second step plate attachment groove (32b) is formed in the inner one side plate (51b) corresponding to the attachment position of the second step plate (32), and vertically downward from the groove (32b). A second kick plate mounting groove (42b) extending in the direction is formed.

  As shown in FIGS. 15 to 17, a plurality of wooden dowels (55 b) are arranged at predetermined intervals in the vertical direction above the second step plate mounting groove (32 b) above the front end of the inner side plate (51 b). ) Is provided. Each of the dowels (55b) is arranged so that the base end side is fixed in an embedded state in the front side end of the one side plate (51b), and the distal end side protrudes forward.

  The inner front plate (61b) is disposed on the side surface (front side surface) of the central column (1) on the staircase side. The inner front side plate (61b) is formed with third and fourth step plate mounting grooves (33b) (34b) corresponding to the third and fourth step plates (33) and (34). Third and fourth kick plate mounting grooves (43b) (44b) extending vertically downward from the grooves (33b) (34b) are formed.

  The inner front side plate (61b) has a long side in the horizontal direction corresponding to the dowels (55b) of the inner side side plate (51b) on one side edge of the back surface facing the central column (1). Hole-shaped dowel holes (66b) are respectively formed. Furthermore, a plurality of wooden dowels (65b) are provided at predetermined intervals in the vertical direction above the fourth step plate mounting groove (34b) at the other side end of the inner front side plate (61b). As with the above, each dowel (65b) is arranged so that the base end side is inwardly fixed in an embedded state on the front side plate (61b) side, and the tip end side protrudes in the other direction.

  The inner front front plate (61b) has a lower end disposed in correspondence with the second step plate mounting groove (32b) of the inner inner side plate (51b) and in each dowel hole (66b). The dowels (55b) of the surrounding one side plate (51b) are fixed to the front side surface of the central column (1) so as to be fitted.

  The other inner side plate (71b) is disposed on the side surface (other side surface) on the upright staircase side of the central column (1). On one side surface (rear side surface) of the upper end portion of the inner side other side plate (71b), a notch joint portion (70b) with the upper end notched is provided. Further, a fifth step plate mounting groove (35b) is formed in the inner side other side plate (71b) corresponding to the fifth step plate (35), and extends vertically downward from the groove (35b). A fifth kick plate mounting groove (45b) is formed.

  Further, in the inner side other side plate (71b), a dowel hole (76b) having a long hole shape in the horizontal direction is formed corresponding to each dowel (65b) of the inner side front side plate (61b).

  The other inner side plate 71b) has a lower end disposed corresponding to the fourth step plate mounting groove (34b) of the inner front side plate (61b) and is provided in the dowel hole (76b). Each dowel (65b) of the front side plate (61b) is fixed to the other side surface of the central column (1) so as to be fitted.

  In addition, the lower notch joining part of the said upper right inner side board (21b) is arrange | positioned at the notch joining state in the notch joining part (70b) provided in the rear end of the inner side other side board (71b).

  Here, as shown in FIGS. 15 to 17, the types and materials of the dowels (55b) and (65b) are not particularly limited. However, in the present embodiment, the dowels (55b) and (65b) are of a type embedded in the plate. Things are used.

  Further, the dowels (55b) and (65b) are usually embedded in the side of the butt at 1/2 to 1/3 of the length (of the dowel) and about 1/3 to 1/2 on the plate surface side. .

  Further, as the dowels (55b) and (65b), those having a diameter of 5 to 15 mm, preferably 8 to 12 mm may be used, and those having a length of 25 to 30 mm are preferably used. Further, the mounting pitch of the dowels (55b) (65b) is preferably set to about 100 to 200 mm.

  Further, the dowel holes (66b) and (76b) are preferably configured so that they can be forcibly fitted by using those whose longitudinal diameter is about 0.1 to 0.5 mm smaller than the dowel diameter. Further, the lateral diameter is not particularly limited, but is set to be about 2 to 10 mm larger than the dowel diameter so that the dowels (55b) and (65b) can move about 1 to 5 mm in the lateral direction (horizontal direction). good.

  On the other hand, the 1st thru | or 5th step board (31)-(35) in the surrounding staircase (30) is in an outer side board (51a) (61a) (71a) and an inner side board (51b) (61b) (71b). The corresponding first to fifth step plate mounting grooves (31a) to (35a) and (31b) to (35b) are inserted and fixed, and the first to fifth kick plates (41) to (45) are The first to fifth kick plate mounting grooves (41a) to (45a) and (41b) to (45b) are inserted and fixed.

  Next, the construction procedure of the staircase structure of this embodiment will be described. For example, when constructing this structure from below, it is constructed in the following procedure.

  First, the lower right outer plate (11a) in the lower straight staircase (10) is fixed to the corresponding column (2). At this time, the lower end of the outer plate (11a) is grounded to the lower floor.

  Next, the outer one side plate (51a) in the surrounding staircase (30) is assembled by using the connection fitting (100). That is, the connecting pin (110) is attached to the notch joint (10a) of the lower right outer plate (11a), and the mounting recess (130) and the pin insertion hole (131) are formed on the outer side plate (51a) side. The fastener (120) is fitted into the mounting recess (130). The outer one side plate (51a) is placed in the positioning state by laminating the lower notch joint portion (50a) to the upper notch joint portion (10a) of the lower right outer plate (11a), and at the same time, the connecting pin (110) is inserted into the fastener (120). Further, the fastener (120) is rotated to draw the outer one side plate (51a) to the lower right outer plate (11a), thereby joining the two notch joint portions (10a) and (50a) without any gap.

  In addition, the attachment work to the lower right outer side plate (11a) of the connecting pin (110), the formation work of the attachment recess (130) and the pin insertion hole (131) of the outer one side plate (51a), the attachment to the attachment recess (130) The fitting operation of the fastener (120) is usually performed in advance in a factory, but it goes without saying that these operations may be performed at an assembly site.

  Thereafter, the outer one side plate (51a) is fixed to the support column (2) with a fixing tool such as a screw or a nail. As a result, the outer one side plate (51a) is assembled with good positional accuracy in a state where it is accurately joined to the lower right outer plate (11a) without a gap.

  When the outer one side plate (51a) is assembled, the engagement step portion (56a) in the notch joint portion (50a) of the one side plate (51a) is replaced with the notch joint portion (11a) of the lower right outer plate (11a). ) Can be temporarily placed and fixed on the notched joint side of the outer one side plate (51a), so that the fixing operation of the outer one side plate (51a) is efficient. It can be done well and smoothly.

  Next, the outer front side plate (61a) is assembled. That is, with the assembly protrusion (60a) of the front plate (61a) inserted into the assembly groove (57) of the outer one side plate (51a) and positioned, the upper end (other plate 71a) of the front plate (61a) is positioned. Side end) is fixed to the column (2), and then the lower end (end on the one side plate 51a side) is fixed to the column (2).

  Subsequently, the other side plate (71a) is assembled around the outside. That is, in the state where the assembly protrusion (77a) of the outer side other side plate (71a) is inserted into the assembly groove (67a) of the outer side front side plate (61a) and positioned, the lower end portion of the other side plate (71a) ( Secure the other side of the upright staircase to the column (2).

  Thereafter, the upper right outer plate (21a) is assembled using the connection fitting (100). That is, the connecting pin (110) is attached to the notch joint (70a) of the outer side outer plate (71a) and is tightened to the mounting recess (130) on the inner surface of the upper right outer plate (21a) on the notch joint (20a) side. Insert the tool (120).

  Similarly to the above, the attaching operation of the connecting pin (110), the forming operation of the attaching recess (130) and the pin insertion hole (131), and the fitting operation of the fastener (120) are performed in advance at the factory. good.

  In this state, the upper right outer plate (21a) is joined around the notch joining portion (20a) around the notch joining portion (20a) to the notch joining portion (70a) of the other side plate (71a), and at the same time, the connecting pin (110) is tightened. Insert at (120). Further, the fastening tool (120) is rotated to draw the upper right outer plate (21a) outwardly and draw it to the other side plate (71a), thereby joining the notch joining portions (20a) (70a) without any gap.

  Thereafter, the upper right outer plate (21a) is fixed to the support column (2) with fixing tools such as screws and nails. As a result, the upper right outer plate (21a) is assembled with good positional accuracy in a state where it is accurately joined to the outer peripheral side plate (71a) without a gap.

  Also in the assembling work of the upper right outer plate (21a), as described above, the notch joint portion (20a) of the upper right outer plate (21a) is turned around to the notch joint portion (70a) of the other side plate (71a). By notching and joining, it is possible to easily and accurately position between the two.

  In addition, the upper end side of the upper right outer plate (21a) is grounded to the floor surface on the floor.

  Next, the lower straight inner plate (11b) is fixed to the corresponding column (1) (1). At this time, the lower end of the inner plate (11b) is grounded to the floor below the floor.

  Subsequently, between the lower straight inner plate (11b) and the lower right outer plate (11a), a plurality of step plates (18) are inserted and attached to the corresponding step plate attachment grooves (12a) and (12b) from the back side of the stairs, A plurality of kick plates (19) are inserted and attached to the corresponding kick plate mounting grooves (13a) and (13b) from the back side of the staircase.

  Next, the first and second step plates (31) and (32) in the surrounding staircase (30) are inserted into the corresponding step plate mounting grooves (31a) and (32a) in the outer one side plate (51a) and the front side plate (61a). The first and second kick plates (41) and (42) are respectively inserted and mounted in the corresponding kick plate mounting grooves (41a) and (42a). At this time, the inner edge of the first step plate (31) is inserted into the uppermost step plate attachment groove (12b) of the lower straight inner plate (11b) and attached, and the inner edge of the first kick plate (41) Are inserted into the uppermost kick plate mounting groove (13b) of the lower straight inner plate (11b) and attached.

  Subsequently, the inner side one side plate (51b) is engaged with the notch recess (14b) in the upper notch joint portion (11b) of the lower straight inner plate (11b) at the lower end, and the front edge is the central column (1). It is made to correspond to the front side surface (to match the same surface) and fixed to the central column (1). At this time, the second step plate mounting groove (32b) and the second kick plate mounting groove (42b) of the inner one side plate (51b) are formed on the inner edges of the second step plate 32) and the second kick plate (42). Arrange to fit.

  Next, the dowel (55b) of the inner one side plate (51b) is fitted into the dowel hole (66b) of the inner front side plate (61b) so that the inner front side plate (61b) The inner side is arranged so as to cover the front end of the one side plate (51b). Subsequently, while the dowel (55b) is guided along the dowel hole (66b), the inner front plate (61b) is slid along one side direction (horizontal direction), thereby causing the inner front plate. (61b) The one side edge is inwardly aligned with the surface of the one side plate (51b).

  Here, when the dowel (55b) is fitted into the dowel hole (66b), the vertical positioning of the inner front side plate (61b) with respect to the inner one side plate (51b) is automatically and accurately achieved. Therefore, the alignment work in that direction can be omitted. Moreover, the inner front side plate (61b) is aligned with the inner inner side plate (51b) with high accuracy by sliding the inner front plate (61b) in one direction along the dowel hole (66b). And the inner front side plate (61b) can be appropriately arranged at the optimum position, and the fit is good and a good aesthetic appearance can be obtained.

  After the inner front side plate (61b) is thus arranged at a predetermined position, it is fixed to the central column (1).

  Next, the third and fourth step plates (33), (34) are connected to the corresponding step plate attachment grooves (33a), (34a), (33b) of the outer side plates (61a) (71a) and the inner front side plates (61b). ) (34b) is inserted and attached. Further, the third and fourth kick plates (43) (44) are respectively inserted and attached to the corresponding kick plate mounting grooves (43a) (44a) (43b) (44b). Even at the time of attachment, since the inner front side plate (61b) is arranged with high positional accuracy, the step plates (33) and (34) and the kick plates (43) and (44) can be assembled with high positional accuracy.

  Thereafter, the dowel (65b) of the inner front side plate (61b) is fitted into the dowel hole (76b) of the inner side other side plate (71b), and the inner side other side plate (71b) is fitted at its front edge. The inner side front side plate (61b) is arranged so as to cover the other side end. Subsequently, while guiding the dowel (65b) along the dowel hole (76b), the inner other side plate (71b) is precisely aligned with the front surface of the inner side front plate (61b) with the front edge thereof inward. Then, the other inner side plate (71b) is fixed to the central column (1).

  In the assembly of the inner side other side plate (71b), the dowel hole (76b) is fitted into the dowel hole (76b) in the same manner as described above, so that the vertical positioning can be accurately achieved, and the dowel hole By sliding the inner side other side plate (71b) along (76b), the inner side other side plate (71b) can be aligned with an optimum position with high accuracy.

  After that, the fifth step plate (35) and the fifth kick plate (45) are connected to the fifth step plate mounting grooves (35a) and (35b) of the outer side other side plate (71a) and the inner side other side plate (71b) and the fifth. The kick plate mounting grooves (45a) and (45b) are respectively inserted and mounted.

  Also at the time of attachment, since the inner side other side plate (71b) is arranged with high positional accuracy as described above, the step plate (35) and the kick plate (45) can be assembled with high positional accuracy.

  In this embodiment, when the dowels (55b) (65b) are fitted into the dowel holes (66b) (76b), the outer peripheral surfaces of the dowels (55b) (65b) and the dowel holes (66b) (76b) It is also possible to apply an adhesive to the two and adhere and fix them after a predetermined time has elapsed.

  Here, in this embodiment, the turning stairs (30) employs a kick core turning structure. That is, as shown in FIGS. 8 to 13, when the vertical center line (assembly center line) of the assembly center member such as the center column (1) is “X”, the rotating staircase (30) has its first to fifth steps. The kick plates (41) to (45) are assembled so that the surface positions thereof coincide with the center line (X) of the central column (1), and in plan view, on the radiation centered on the center line (X) These are assembled so that the surfaces of the kick plates (41) to (45) are positioned. In the present embodiment, the first kick plate (41) is arranged in parallel with the kick plate (19) of the lower straight staircase (10), and the fifth kick plate (45) is the upper straight staircase (20). It is arranged in parallel with the kick plate (29). Furthermore, in this embodiment, as shown in FIGS. 8 to 11, the center line of the outer support columns (2) and (2) is arranged corresponding to the center line (X), and the outer support columns (2) and (2). The surfaces of the first and fifth kick plates (41) and (45) coincide with the center line.

  In the present invention, in addition to the above-described kick core structure, a nose core structure can be employed. The nosing core turning structure is assembled such that the tip (nosing portion) position of each step plate (31) to (35) coincides with the center line (X) of the center column (1), and is centered in plan view. It is assembled so that the tips of the step plates (31) to (35) are positioned on the radiation centered on the line (X). Even in the case of adopting this nose core turning structure, the first and fifth step plates (31) and (35) are replaced with the step plates (18) and (28) of the straight stairs (10) and (20) as described above. In general, the tips of the first and fifth step plates (31) and (35) are aligned with the center line of the outer support columns (2) and (2).

  In the present embodiment, since the kick core structure is employed, alignment can be performed more easily than in the case where the nosing core structure is employed. That is, since the vertical lengths of the surfaces of the kick plates (41) to (45) are longer than the vertical lengths (thicknesses) of the nose tips of the step plates (31) to (35), the surface of the kick plate is the nose. It is easier to align with the center line (X) than the tip, and alignment can be performed easily.

  In the present invention, the vertical lengths of the kick plates (41) to (45), that is, the vertical lengths of the notch recesses such as the side plates, so that the matching operation of the surface of the kick plate with respect to the center line (X) can be easily performed. The height is set to 50% or more, more preferably 60% or more, with respect to the width (vertical length) of the side plate.

  Moreover, in this embodiment, as shown in FIG. 13, the inner edge of each step board (31)-(35) of the turning staircase (30) is cut according to the outer peripheral shape of the central column (1). Yes. In particular, since the second step plate (32) and the fourth step plate (34) are arranged corresponding to the corner portion of the central column (1), both step plates are arranged in accordance with the corner portion of the central column (1). (32) The inner edge of (34) is cut into an L shape. By cutting the inner edge of the step plate in accordance with the outer peripheral shape of the center column (1), the inner edge of each of the step plates (31) to (35) 31b) to (35b) can be securely fitted with high positional accuracy, and the construction workability can be further improved.

  Similarly, in the present embodiment, as shown in FIG. 2 and the like, the outer edge of each of the step plates (31) to (35) is placed inside the outer wall formed by the outer side plates (51a) to (53a). Cut according to the shape of the peripheral surface. In particular, the outer edges of the second step plate (32) and the fourth step plate (34) are cut into an L shape corresponding to the corners of the outer wall. In this way, by cutting the inner edge of the step plate in accordance with the shape of the inner peripheral surface of the outer wall, the outer edge of each of the step plates (31) to (35) is changed to the step plate of the inner peripheral surface of the outer wall. The mounting grooves (31a) to (35a) can be securely fitted with high positional accuracy, and the construction workability can be further improved.

  After assembling the rotating stairs (30) in this way, the upper straight inner plate (21b) of the upper straight stairs (20) is fixed to the columns (1) and (2). At this time, the upper right inner side plate (21b) is positioned with its notch joining portion (20b) inwardly connected to the notch joining portion (70b) of the other side plate (71b) while positioning the upper end on the floor of the upper floor. In the state where it is grounded, it is fixed to the columns (1) and (2).

  Thereafter, in the upright staircase (20), the step plate (28) is inserted and attached to the corresponding step plate attachment groove (22a) (22b) from the back side of the staircase, and the corresponding kick plate attachment groove (23a) (23b). Attach the kick plate (29) to the rear side of the stairs. Thereby, the staircase structure of this embodiment is formed.

  As described above, in the staircase structure of the present embodiment, when the outer one side plate (51a) is joined and assembled to the lower right outer plate (11a), the connecting pin (110) is connected to the lower right outer plate (11a) side. And a fastening tool (120) attached to the outer side plate (51a) side, a connecting pin (110) is inserted into the fastening tool (120), and the fastening tool (120) is rotated. By operating, the connecting pin (110) is pulled toward the fastener (120), so the outer one side plate (51a) is accurately joined to the lower right outer plate (11a) without any gap. Can be assembled with good positioning accuracy. In this way, the joint (50a) of the outer one side plate (51a) can be easily and accurately aligned with the joint (10a) of the lower right outer plate (11a), and the outer one side plate (51a) can be accurately It can be assembled easily and well.

  Further, in the case where the upper right outer plate (21a) is externally joined and joined to the other side plate (71a), similarly, the upper right outer side plate (21a) is turned outwardly to the other side plate (71a) using the connecting metal fitting (100). ), It is possible to easily assemble both side plates (21a) (71a) with their joints (20a) (70a) joined with high accuracy.

  Moreover, in this embodiment, since the fastener (120) of a connection metal fitting (100) is arrange | positioned in the back surface side of the kick board (41) (29) under a step board (31) (28). After the stair assembly, the fastener (120) is concealed by the step plates (31) (28) and the kick plates (41) (29). Therefore, a good aesthetic appearance can be obtained without performing a makeup work such as concealing the fastening tool (120) after construction.

  However, in the present invention, the fastening tool (120) is not necessarily arranged below the step plate or on the back side of the kick plate, and may be arranged above the step plate or on the front side of the kick plate. When the fastener (120) is disposed above the step plate or on the back side of the kick plate, the upper surface of the fastener (120) is exposed after the stairs are constructed. It is better to conceal it with a cap or seal to improve the beauty.

  In the above embodiment, the joint between the lower right outer plate (11a) and the outer one side plate (51a), and the joint between the outer other side plate (71a) and the upper right outer plate (21a) are connected to each other. In the present invention, the case of connecting by (100) is described as an example. However, the present invention is not limited to this. In the present invention, the joint between the outer side plate (51a) and the front side plate (61a), the outer front side plate (61a). And the other side plate (71a), the lower straight inner plate (11b) and the inner one side plate (51b), the inner one side plate (51b) and the front side plate (61b), Similarly to the above, the connecting metal fitting (100) is also connected at the joint between the front front plate (61b) and the other side plate (71b) and at the joint between the inner front side plate (71b) and the upper right inner plate (21b). And may be connected in the same manner.

  Furthermore, in the present invention, in a staircase structure in which at least one side plate of both side plates of a straight staircase is connected in the length direction (lifting direction), the side plate connecting portion is connected to the connecting metal fitting (100) in the same manner as described above. You may make it connect similarly using.

  On the other hand, in the present embodiment, the dowel (55b) is provided on the inner one side plate (51b) in the turning staircase (50), and the horizontally long dowel hole (66b) is provided on the inner front side plate (61b). By fitting (55b) into the dowel hole (66b), it is possible to automatically and accurately position the inner front side plate (61b) with respect to the inner inner side plate (51b) in the vertical direction. The alignment work in that direction can be omitted. In addition, while the dowel (55b) is guided along the dowel hole (66b), the inner front plate (61b) is moved inward by sliding the inner front plate (61b) along one side. The side plate (51b) can be aligned with high accuracy. Similarly, when attaching the inner side other side plate (71b), the dowel (65b) is fitted into the dowel hole (76b) to position the inner side other side plate (71b) vertically, and then the dowel ( 65b) is guided along the dowel hole (76b), and the inner side other side plate (71b) is slid along the front side direction, thereby causing the inner side other side plate (71b) to go inward and the front side plate (61b). Can be aligned with high accuracy. Since the inner side plates (51b) (61b) (71b) for mounting the step plates can be assembled with high positional accuracy in this way, the step plates (31) attached to the inner side plates (51b) (61b) (71b) ) To (35) and the kick plates (41) to (45) can also be assembled with high positional accuracy, and a good fit can be obtained around the central column, and the aesthetics can be improved.

  Moreover, in the staircase structure of this embodiment, while forming the notch junction part (10a) which notched the upper side at the upper end edge of the lower right outer side plate (11a), it is below the lower end edge of the outer side plate (51a) Since the notched joint portion (50a) is formed by cutting out the sides, both side plates (11a) (51a) can be easily obtained simply by engaging the two joint portions (10a) and (50a) in the phased joint state. The positioning between them can be performed with high accuracy, and the construction work can be performed efficiently and smoothly.

  Further, when the notched joints (50a) and (10a) of the outer one side plate (51a) and the lower right outer plate (11a) are engaged, the outer one side plate (51a) is engaged in the notched joint (50a). Since the stepped portion (56a) is placed on the engaging stepped portion (16a) in the notched joint portion (11a) of the lower right outer plate (11a), the notched joint portion side of the outer one side plate (51a) is temporarily placed. It can be placed and fixed, and the outer side one side plate (51a) can be fixed easily.

  In this embodiment, since the tip of the step plate mounting groove (31a) is disposed in the upper convex portion (55a) of the notched joint portion (50a) of the outer side plate (51a), the step plate mounting The groove is not arranged between the outer side plate and the lower right outer plate, and the shape of the step plate mounting groove (31a) is changed even if there is a displacement between both side plates. No, the step plate (31) can be reliably inserted and fixed in the groove, and the construction work can be performed more efficiently and smoothly.

  In this embodiment, for example, when the both side plates (11a) and (51a) are phase-joined, it is assumed that there is a displacement between the side plates (11a) and (51a) due to the effects of assembly errors and dimensional errors. However, the misalignment can be easily absorbed.

  For example, when the upper end corner portion in the notched joint portion (50a) of the outer one side plate (51a) is depressed more than the upper end corner portion in the notched joint portion (10a) of the lower right outer plate (11a), By providing a gap, for example, by interposing an inclusion between the engagement step portions (16a) and (56a) of the notch joint portions (10a) and (50a), the outer side outer plate (51a) is lifted, The upper end corner part in the notch joining part (50a) of the outer side plate (51a) can be matched with the upper end corner part in the notch joining part (10a) of the lower right outer side plate (11a), and a good aesthetic appearance can be obtained. Can do. Even if the displacement is absorbed in this way, in the present embodiment, the tip of the step plate mounting groove (31a) in the upper convex portion (54a) of the notched joint portion (50a) of the outer one side plate (51a). Therefore, the shape of the groove (31a) does not change, and the step plate (31) can be reliably inserted and assembled in the groove.

  On the contrary, when the upper end corner portion in the notched joint portion (50a) of the outer one side plate (51a) is raised more than the upper end corner portion in the notched joint portion (10a) of the lower right outer plate (11a). If the engagement step portion (16a) of the lower right outer plate (11a) is cut, the upper end corner portion of the lower right outer plate (11a) is made to coincide with the upper end corner portion of the one side plate (51a). good.

  As described above, in the staircase structure of the present embodiment, it is possible to easily perform the assembling work while easily absorbing the misalignment due to the assembling error or the dimensional error.

  In the present embodiment, the leading edge of the first step plate mounting groove (31a) formed in the outer one side plate (51a) is made to coincide with the leading edge of the convex portion (54a) in the notch joint portion (50a). Since the front edge of the first kick plate mounting groove (41a) is formed so as to coincide with the tip edge of the notch recess (55a) in the notch joint (50a), the notch joint ( At the same time as the cutting process of 50a), the front edge of the step plate mounting groove (31a) and the front edge of the kick plate mounting groove (41a) can be formed, and these groove processing can be easily and accurately performed. The side plates (51a) and (11a) can be easily manufactured.

  In this embodiment, even when assembling the outer side other side plate (71a) and the upper right outer side plate (21a), the positioning can be easily performed and the construction work can be performed efficiently and smoothly as described above. Can do. Furthermore, assembly errors and dimensional errors can be easily absorbed, and parts can be easily manufactured.

  In this embodiment, a notch joint (10b) is formed on the upper edge of the lower straight inner plate (11b), and the lower end of the one side plate (51b) is engaged with the notch joint (10b). Therefore, alignment between the lower straight inner plate (11b) and the inner one side plate (51b) can be easily performed.

  Further, when the lower end of the inner one side plate (51b) is engaged with the notched joint (10b) of the lower straight inner plate (11b), the inner one side plate (51b) can be temporarily placed. 51b) can be carried out more smoothly.

  In addition, in the present embodiment, a notch joint portion (70b) is formed at the upper end portion of the inner side other side plate (71b), and a notch joint portion (20b) is formed at the lower end edge of the upper straight inner plate (21b). Since both the notch joints (20b) and (70b) are engaged with each other and positioned in the phased joint state, the alignment between the inner side other side plate (71b) and the upper right inner side plate (21b) is performed. Can also be done easily.

  Further, when the notched joint (20b) of the upper straight inner plate (21b) is engaged with the notched joint (70b) of the other inner side plate (71b), the lower side of the upper straight inner plate (21b) is temporarily placed. Therefore, the fixing work of the upper right inner plate (21b) can be performed more smoothly.

FIGS. 23 and 24 are inner side views showing the joint portion of the lower right outer plate and the outer side plate in the staircase structure according to the second embodiment of the present invention, and FIGS. 25 and 26 are enlarged cross-sectional views of FIGS. 23 and 24. FIG. As shown in these drawings, in the present embodiment, the first step plate (31) of the rotating staircase (30) is provided from the inner surface of the outer one side plate (51a) to the inner surface of the upper end portion of the lower right outer plate (11a). A corrugated plate mounting groove (31a) for mounting is formed. Further, the notch joint portion (10a) of the lower right outer plate (11a) is formed so that the engaging step portion (16a) is located within the range of the step plate mounting groove (31a). And in the region in the step plate mounting groove (31a) of the lower right outer plate (11a), in other words, the end of the convex portion (15a) of the lower right outer plate (11a) on the engagement step portion (16a) side, A fixed piece (80) is provided. As is apparent from FIGS. 23 to 26, the fixed piece (80) is formed by the bottom of the step plate mounting groove (31a) in the lower right outer plate (11a).

  Further, the protruding corner portion (91a) on the engaging step portion (16a) side of the convex portion (15a) of the lower right outer plate (11a) is formed in an arc shape, and the engaging step portion (14a) in the notch concave portion (14a) ( The corner (91b) on the 16a) side is formed in an arc shape.

  Furthermore, the corner (92a) on the engagement step portion (56a) side in the notch recess (55a) of the outer side plate (51a) can be adapted to the corner (91a) of the lower outer plate (11a). And a protruding corner (92b) on the engaging step portion (56a) side of the convex portion (54a) can be adapted to the corner (91b) of the lower right outer plate (11a). It is formed in a circular arc shape.

  Further, the connecting pin (110) and the fastener (120) of the connecting metal fitting (100) are notched joint portions (10a) (50a) of the lower right outer plate (11a) and the outer side plate (51a) in the same manner as described above. Are attached to each.

  And when constructing the lower right outer plate (11a), by screwing (driving) a fixing tool (85) such as a nail or a screw into a structural material such as a column (2) via a fixing piece (80), The lower right outer plate (11a) can be securely fixed.

  Further, the outer one side plate (51a) has its notch joint portion (50a) joined to the notch joint portion (10a) of the lower right outer plate (11a) and is joined to both side plates (11a) by the connecting metal fitting (100). With the (51a) being pulled toward each other, the fixing tool (85) is screwed into (injected into) the region within the step plate mounting groove (31a) of the outer one side plate (51a) and fixed to the structural material. .

  Since other configurations are the same as those of the above-described embodiment, the same portions are denoted by the same reference numerals, and redundant description is omitted.

  According to the staircase structure of this embodiment, the lower right outer plate (11a) can be reliably fixed to a structural material such as the support column (2), and the assembly work of the lower right outer plate (11a), and thus the stair assembly Work can be done easily and accurately.

  Further, since the fixed piece (80) of the lower right outer plate (11a) is provided in the step plate mounting groove (31a), after the stair assembly, the fixed piece (80), that is, Since the fixing tool (85) is concealed, a cosmetic work for concealing the fixing tool (85) is not necessary, and a good aesthetic appearance can be obtained.

  In this embodiment, since the entrance corner portion (92a) and the exit corner portion (92b) around the engaging step portion (56a) of the outer side plate (51a) are formed in an arc shape, when the side plate is manufactured. The cutting operation of the notch recess (54a), in particular, the processing of the entrance corner (92a) and the exit corner (92b) can be easily and accurately performed using a router, and the production of the staircase components can be performed efficiently. be able to. Similarly, the cut-out recess (14a) is cut out because the protruding corner (91a) and the entering corner (91b) around the engaging step (16a) of the lower right outer plate (11a) are formed in an arc shape. Can be easily performed, and can be manufactured efficiently.

27 and 28 are inner side views showing the joint portion of the lower right outer plate and the outer one side plate in the staircase structure according to the first modification of the present invention, and FIGS. 29 and 30 are enlarged cross-sectional views of FIGS. FIG. As shown in these drawings, in this modification, the first step plate (31) of the rotating staircase (30) is formed from the inner surface of the outer one side plate (51a) to the inner surface of the upper end portion of the lower right outer plate (11a). A corrugated plate mounting groove (31a) for mounting is formed. Further, the notch joint portion (10a) of the lower right outer plate (11a) is formed such that the engaging step portion (16a) is along the upper end edge of the step plate attachment groove (31a). And in the region in the step plate mounting groove (31a) of the lower right outer plate (11a), in other words, the end of the convex portion (15a) of the lower right outer plate (11a) on the engagement step portion (16a) side, A fixed piece (80) is provided. As is apparent from FIGS. 27 to 30, the fixed piece (80) is formed by the bottom portion of the step plate mounting groove (31 a) in the lower right outer plate (11 a). Further, the protruding corner portion on the engagement step portion (16a) side of the convex portion (15a) is cut into an arc shape to form a cut portion (95).

  Further, the notched joint portion (50a) of the outer one side plate (51a) is formed such that its engaging step portion (56a) is along the upper end edge of the step plate mounting groove (31a). Further, the corner (92a) on the engagement step portion (56a) side of the notch recess (55a) is formed in an arc shape.

  Further, the connecting pin (110) and the fastener (120) of the connecting metal fitting (100) are notched joint portions (10a) (50a) of the lower right outer plate (11a) and the outer side plate (51a) in the same manner as described above. Are attached to each.

  When the lower right outer plate (11a) is constructed, the lower right outer side is obtained by screwing a fixing tool (85) such as a nail or a screw into a structural member such as a support (2) via a fixing piece (80). The plate (11a) can be securely fixed.

  Further, the outer one side plate (51a) has its notch joint portion (50a) joined to the notch joint portion (10a) of the lower right outer plate (11a) and is joined to both side plates (11a) by the connecting metal fitting (100). In a state where (51a) is pulled toward each other, a fixing tool (85) is screwed into a region in the step plate mounting groove (31a) of the outer one side plate (51a) and fixed to the structural material.

  Since other configurations are the same as those of the above-described embodiment, the same portions are denoted by the same reference numerals, and redundant description is omitted.

  Also in the staircase structure of this modified example, the lower right outer plate (11a) can be securely fixed to the structural material such as the column (2), and a good aesthetic appearance can be obtained.

  Further, in this configuration, since the corner (92a) on the engagement step portion (56a) side in the notch recess (55a) of the outer one side plate (51a) is formed in an arc shape, the notch recess is formed when the side plate is manufactured. The excision work (14a) can be performed easily and accurately.

  Further, in this configuration, since the protruding corner portion on the engagement step portion (16a) side of the convex portion (15a) of the lower right outer plate (11a) is cut to form the cut portion (91a), both side plates (11a) When the 51a is phase-joined to each other, the protruding corner (the cut portion 91a) of the convex portion (15a) is not struck, and the convex portion (15a) is inserted into the corresponding notched concave portion (55a). ) And can be arranged well, and the assembly workability can be further improved.

  Here, in the present invention, when the fixed piece (80) is formed on the lower right outer plate (11a), the present invention is not limited to the above example. For example, as shown in the second modified example of FIGS. At the end of the projection (15a) on the engagement step portion (16a) side of the plate (11a), a small fixing piece (80) that only stops the fixing tool (85) is formed, and the notch joining portion (10a) ) May be formed in a shape that can be joined to the outer peripheral side plate (51a).

  In the present embodiment and the modification, the fixed piece (80) is described as constituting a part of the convex portion (15a). That is, in the said Example etc., the upper end edge of a fixed piece (80) will be comprised as an engagement step part (16a).

  FIGS. 33 and 34 are inner side views showing a joint portion of the lower right outer side plate and the outer one side plate in the staircase structure as the third modified example of the present invention. As shown in both figures, in this configuration, the notch recess (14a) of the lower right outer plate (11a) is formed with an arcuate corner (91b) on the engagement step portion (16a) side, A protruding portion (96) is formed by cutting out the protruding corner portion on the engagement step portion (56a) side of the convex portion (54a) of the one side plate (51a) in an arc shape. Even if the fixing piece for screwing is not formed as in this structure, by forming the entry corner (91b) in an arc shape or by forming the cutout (96) at the exit corner, Similarly to the above, the side plate can be efficiently manufactured, and the convex portion (54a) can be well placed in the notch concave portion (14a), so that the assembling workability can be improved. Needless to say, even if the fixing piece for screwing is not formed as in the third modified example, the engagement step portion (56a) side of the convex portion (54a) of the outer side plate (51) is provided. An exit corner (a portion corresponding to the cut portion 96) is formed in an arc shape, or an entry corner (92b) on the engagement step portion (56a) side in the notch recess (55a) of the outer one side plate (51) is formed. You may make it form in circular arc shape, and also make it form in the circular arc shape the protrusion corner | angular part (91a) by the side of the engagement step part (16a) in the convex part (15a) of a lower right outer side board (11a).

  FIG. 35 and FIG. 36 are inner side views showing the joint portion of the lower right outer plate and one outer side portion in the staircase structure according to the third embodiment of the present invention. As shown in both figures, in the present embodiment, the tip edge of the convex portion (54a) in the notched joint portion (50a) of the outer one side plate (51a) is formed so as to be inclined rather than vertical. In accordance with the shape of the joint portion (50a), the base edge of the notch recess (55a) in the notch joint portion (50a) of the lower right outer plate (11a) is formed to be inclined. Other configurations are the same as described above.

  In this configuration, in order to incline the joint portion between the both side plates (11a) and (51a), when the both side plates (11a) and (51a) are temporarily assembled, they rotate outwardly on the lower right outer plate (11a) (51a ) Can be maintained in a stable state, and assembly workability can be improved.

  Further, in the third embodiment, the tip end edge of the convex portion of the outer one side plate (51a) is inclined and arranged so as to be positioned on the lower right outer plate (11a) side as it goes upward. In the invention, it may be arranged in an inclined manner contrary to this. In other words, the front end edge of the convex portion of the outer one side plate (51a) may be inclined and arranged in a manner of being located on the lower right outer plate (11a) side as it goes downward.

  In the present invention, the configuration described with reference to FIGS. 23 to 36 can be similarly applied to the joint portion between the other outer side plate (71a) and the upper right outer plate (21a). Can be obtained.

  In the above embodiment, the case where the present invention is applied to the folded staircase has been described. However, the present invention is not limited to this, and can be applied to other staircase structures with staircases such as a curved staircase.

  In the above embodiment, the upper notch joint (10a) is formed on the lower right outer plate (11a), and the lower notch joint (50a) is formed on the outer one side plate (51a). However, the present invention is not limited thereto, and in the present invention, the lower notch joint portion may be formed on the lower right outer plate (11a), and the upper notch joint portion may be formed on the outer one side plate (51a). Further, a lower notch joint portion may be formed on the outer side outer plate (71a) and an upper notch joint portion may be formed on the upper right outer plate (21a).

  Moreover, in the said embodiment, although the case where a staircase structure was constructed from the lower side was demonstrated, it is not restricted only to it, This invention can also construct a staircase structure from the upper side. In this case, an upper notch is formed in the upper straight inner plate (21b), a lower notch (notch recess) is formed in the inner other side plate (71b), and a front end lip of the inner inner side plate (71b) is further formed. Is pushed against the other side edge of the back side of the inner front side plate (61b), and one side end of the inner front side plate (61b) is pushed against the front edge of the inner side one side plate (51b). preferable. In addition, an upper notch joint is formed on the upper right outer plate (21a), a lower notch joint is formed on the other outer side plate (71a), and an upper notch joint is further formed on the outer one side plate (51a). It is preferable to form a lower notch joining portion in the lower right outer plate (11a).

  In the above embodiment, the outer plates (11a) and (21a) of the straight staircases (10) and (20) are phase-joined to the outer side plates (51a) and (71a). However, the present invention is not limited to this. In the present invention, the opposing edges of the outer plates (11a) (21a) and the outer side plates (51a) (71a) of the straight staircases (10) and (20) are cut linearly, and the linear cuts are made. You may make it join an edge in a mutually butted state.

  Further, in the above embodiment, the front end edge of the outer front side plate (51a) protrudes to the front (back side) of the outer front side plate (61a), and the one end edge of the outer front side plate (61a) In the prefabrication method, etc., when the wall material is used as a structural material, the edge of the outer side plate protrudes. You may make it fix an outer side board to the wall material as a structural material, without forming a part.

  The above embodiment has been described by taking as an example a five-step staircase structure in which five step plates are attached to the staircase (30). However, the present invention is not limited to this, and the present invention has two staircases. It can also be applied to three-stage, four-stage, and six-stage types, and can also be applied to those in which one side or the entire area of the staircase is formed as a landing.

  Further, in the above-described embodiment, the inner side plates (51b) (61b) (71b) are attached to the central column (1), and the inner side (center side) of the step plates (31) to (35) in the turning step (20). However, in the present invention, the inner support method of the surrounding step plates (31) to (35) is not limited thereto, and for example, a step plate support groove is formed in the central column (1). The inner part of the step plate may be supported around the groove, or a metal piece such as an L-shaped metal fitting may be attached to the outer peripheral surface of the central column (1) so that the inner part of the step plate is supported by the hardware. .

It is a perspective view which shows the staircase structure which is embodiment of this invention. It is a top view which shows the staircase structure of embodiment. It is an inner side view at the time of seeing from the arrow A1 direction of FIG. 2 the part from the lower right outer side board in the staircase structure of embodiment to an outer side one side board. It is an inner side view at the time of seeing the lower direct inner side board in the staircase structure of embodiment from the arrow B1 direction of FIG. It is an inner side view at the time of seeing the part from the outer periphery other side plate in a staircase structure of an embodiment to an upper right outside plate from the direction of arrow A2. It is an inner surface figure at the time of seeing the upper-right inner side board in the staircase structure of embodiment from the arrow B2 direction of FIG. It is an inner side view at the time of seeing the outer front side board in the staircase structure of the embodiment from the arrow A3 direction of FIG. It is an inner side view which shows the junction part of the lower direct inner side board and outer periphery one side board in the staircase structure of embodiment. It is an inner side view which decomposes | disassembles and shows the junction part of the lower direct inner side board of embodiment, and an outer periphery one side board. It is an inner side view which shows the junction part of the outer periphery other side board and upper right inner side board in the staircase structure of embodiment. It is an inner side view which decomposes | disassembles and shows the junction part of the outer periphery other side plate and upper right inner side plate of embodiment. It is a top view which shows the center member periphery of the surrounding staircase in the staircase structure of embodiment. It is a top view which decomposes | disassembles and shows the center member periphery of the surrounding staircase in the staircase structure of embodiment. It is an inner side view at the time of seeing the inner side 1 side board of the surrounding staircase in the staircase structure of embodiment from the arrow B1 direction of FIG. 2A is an inner side view when the inner front side plate of the turning staircase in the staircase structure of the embodiment is viewed from the direction of arrow B3 in FIG. 2, and FIG. 2B is a one-dot chain line in FIG. It is sectional drawing which expands and shows the part enclosed. The figure (a) is an inner side view when the inner side other side plate of the staircase in the staircase structure of the embodiment is viewed from the direction of the arrow B2 in FIG. 2, and FIG. 11 (b) is a dashed line in FIG. It is sectional drawing which expands and shows the part enclosed. It is the figure which isolate | separates and shows the dowel periphery between the center members in the staircase structure of embodiment, Comprising: The figure (a) is a side sectional view, The figure (b) is a horizontal sectional view. It is a perspective view which shows the connection metal fitting applied to the staircase structure of embodiment. It is a disassembled perspective view which shows the connection metal fitting periphery in the staircase structure of embodiment in the state at the time of connection pin attachment. It is a disassembled perspective view which shows the connection bracket periphery in the staircase structure of embodiment in the state at the time of fastener attachment. It is a top view which shows the connection metal fitting in the staircase structure of embodiment, Comprising: The same figure (a) is a top view which shows the state immediately after pin insertion, The same figure (b) is a top view shown in the state after fastening tool rotation. is there. It is sectional drawing which shows the connection metal fitting periphery in the staircase structure of embodiment. It is an inner surface figure which shows the junction part of the lower direct inner side board and outer periphery one side board in 2nd Embodiment of this invention. It is an inner surface figure which decomposes | disassembles and shows the junction part of the lower straight inner side board in 1st Embodiment, and an outer periphery one side board. It is an inner side view which expands and shows the engagement step part periphery of FIG. It is an inner side view which expands and shows the engagement step part periphery of FIG. It is an inner surface figure which shows the junction part of the bottom straight inner side board and outer periphery one side board in the 1st modification of this invention. It is an inner surface figure which decomposes | disassembles and shows the junction part of the lower straight inner side board and outer periphery one side board in a 1st modification. It is an inner side view which expands and shows the engagement step part periphery of FIG. It is an inner side view which expands and shows the engagement step part periphery of FIG. It is an inner surface figure which shows the junction part of the lower straight inner side board and outer periphery one side board in the staircase structure as a 2nd modification of this invention. It is an inner side view which decomposes | disassembles and shows the junction part of the bottom straight inner side board in an 2nd modification, and an outer periphery one side board. It is an inner side view which shows the junction part of the bottom straight inner side board and outer periphery one side board in the staircase structure as a 3rd modification of this invention. It is an inner side view which decomposes | disassembles and shows the junction part of the bottom straight inner side board in an 3rd modification, and an outer periphery one side board. It is an inner surface figure which shows the junction part of the lower direct inner side board and outer periphery one side board in 3rd Embodiment of this invention. It is an inner side view which decomposes | disassembles and shows the junction part of the bottom straight inner board and outer periphery one side board in 3rd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Lower straight staircase 10a ... Notch junction part 11a ... Lower straight outer side plate 11b ... Lower straight inner side plate 14b ... Notch recessed part (notch part)
DESCRIPTION OF SYMBOLS 20 ... Upward staircase 20a ... Notch junction part 21a ... Upper right outer side plate 21b ... Upper straight inner side plate 30 ... Circumferential staircase 31-35 ... Step board 41-35 ... Kick board 51a ... Outward one side plate 51b ... Inner one side plate 61a ... Outer front side plate 61b ... Inner front side plate 71a ... Outer side other side plate 71b ... Inner side other side plate 110 ... Connection pin 112 ... Hook head 120 ... Fastener 121 ... Casing 122 ... Opening 123 ... Slit 124 ... Slit side edges 131 ... Pin insertion holes

Claims (3)

A plurality of side plates arranged along the ascending / descending direction of the staircase is a side plate assembly structure of a staircase that is assembled in a state where the edges of the adjacent side plates are joined together,
The connecting pin is attached to the joining edge of one side plate among adjacent side plates so that the tip side protrudes,
A pin insertion hole into which the connecting pin can be inserted is provided at the joining edge of the other side plate, and a fastening tool is fitted in correspondence with the insertion hole,
The connecting pin has a latching head at its tip,
The fastener includes a disk-shaped casing that is rotatable about an axis, an opening provided in a peripheral wall of the casing, and communicates with the opening and is provided in the peripheral wall of the casing along the circumferential direction. A slit, and
With the connecting pin inserted into the pin insertion hole and the latching head of the pin tip accommodated in the casing via the opening, the casing is rotated so that the latching head is While being hooked to both side edges of the slit, the edges of the one and other side plates are attracted to each other and connected,
A straight staircase and a surrounding staircase, wherein the straight staircase is provided with an outer plate on the outside, and the rotating staircase is provided with an outer side plate on the outside;
One of the outer plate of the straight staircase and the outer side plate of the surrounding staircase is configured as the one side plate, and the other is configured as the other side plate,
An upper notch joining portion having a notch recess on the upper side and a convex portion on the lower side is provided at the joining edge of the one side plate, and a notch recess on the lower side and a projection on the upper side are provided on the joining edge of the other side plate. A lower notch joint having
The one side plate and the other side plate are assembled in a state in which the notch joint portions are joined together.
The step portion between the notch recess and the projection in the one and other side plates is configured as an engagement step portion,
Toward the inner surface of said one side plate from the inner surface of the other side plate, stage plate mounting groove is formed,
The engagement step portions of the one and the other side plates are disposed within the step plate mounting groove,
A side plate assembly structure for a staircase, wherein a fixing piece fixed to a structural material by a fastener such as a screw or a nail is formed by a bottom portion of a step plate mounting groove in the one side plate. A plurality of step plates are attached to the side surface of the side plate at intervals in the elevation direction,
The staircase side plate assembly structure according to claim 1, wherein the fastening tool is disposed on a lower surface side of the step plate in the side plate. Between each of the plurality of step plates, a kick plate is provided vertically between the upper step plate tip portion and the lower step plate base end portion, respectively.
The side plate assembly structure of a staircase according to claim 2, wherein the fastening tool is disposed on a back surface side of the kick plate in the side plate.

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