JP2006249804A - Spiral stairs - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide spiral stairs capable of easily absorbing an installation error in an outside plate. <P>SOLUTION: This invention aims at the spiral stairs installed so as to butt an end surface of a sideways turning outside plate 61a arranged in the horizontal direction against an end part inner surface of a vertically turning outside plate 51a arranged in the vertical direction among two step board support outside plates 51a and 61a mutually orthogonally arranged in a corner part. An installation recessed part 57a is arranged on the end part inner surface of the vertically turning outside plate 51a, and an installation projection part 80 corresponding to the installation recessed part 57a is arranged on an end surface of the sideways turning outside plate 61a. A width T of the installation projection part 80 is set smaller than a width W of the installation recessed part 57a. An end part of the sideways turning outside plate 61a is movably constituted in the width direction (the vertical direction) of the installation projection part 80 to the vertically turning outside plate 51a in a state of fitting the installation projection part 80 in the installation recessed part 57a. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a rotating staircase used when changing the direction of a stairway.

  The wooden indoor staircase of a two-story and three-story house is a staircase with a rotating staircase, such as a folding stairway that turns 180 ° in the middle and a bent staircase that turns 90 ° in the middle. Structure may be applied.

  On the other hand, in recent housing construction technology, when assembling indoor stairs, in order to improve construction workability, most of the components that make up the stairs are cut in advance (pre-cut) on the factory side, and the pre-cut material is used at the construction site. Many pre-cut construction methods are used.

  As means for constructing the surrounding staircase by the pre-cut method, for example, the one shown in Patent Document 1 below is well known. This rotating staircase constitutes a folding staircase that changes the direction of the staircase by 180 °, and three outer plates are arranged so as to close three directions among the four outer peripheral directions of the rotating staircase portion. Of these, for example, the outer plate arranged at the lower stage is arranged along the vertical direction, and the outer plate arranged at the middle stage is arranged along the horizontal direction so as to be orthogonal to the outer plate at the lower stage, and the outer side of the lower stage. It is assembled | attached so that the edge part of the outer stage board of a middle step may be faced | butted by the edge part inner surface of a board.

In such a pre-cut type rotating staircase, an assembly recess is provided on the inner surface of the end portion of the lower outer plate, and an assembly adapted to the assembly recess is provided at the end joint portion of the outer plate of the middle step. Some are provided with a convex portion. At the time of assembling the stairs, the assembling convex portion is fitted into the assembling concave portion so as to fit, so that the two outer plates are assembled while being positioned.
Japanese Patent No. 3059660 (FIG. 1-10)

  However, since the swirl staircase has a very complicated three-dimensional shape, there is a slight dimensional error even in the pre-cut swivel staircase, even if it is within the allowable range on the housing side where it is assembled. If this is the case, the accuracy of the assembly position of the outer plate may be reduced due to the adverse effect, and the step plate or the like may not be assembled correctly. In this case, for example, it is necessary to remove the outer plate once at the construction site, dimensionally process the stepped plate or the outer plate, and assemble the outer plate again, which makes the assembly work difficult. was there.

  An object of the present invention is to solve the above-mentioned problems of the prior art, and to provide a rotating staircase that can easily absorb the assembly error of the outer plate and can be assembled accurately.

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

[1] Of the two step board supporting outer plates arranged orthogonal to each other in the corner portion, the inner surface of the end portion of the vertical outer plate arranged along the vertical direction is arranged along the horizontal direction. A rotating staircase assembled so that the end face of the laterally outer plate is abutted,
An assembly recess is provided on the inner surface of the end portion of the vertical outer plate, and an assembly projection corresponding to the assembly recess is provided on the end surface of the lateral outer plate,
In a state where the width of the assembling convex portion is set smaller than the width of the assembling concave portion and the assembling convex portion is engaged with the assembling concave portion, the end portion of the laterally outer plate is the vertical outer side. A rotating staircase configured to be movable along a width direction (longitudinal direction) of the assembly convex portion with respect to a plate.

  [1a] The assembling convex portion according to the preceding item 1, wherein the assembling convex portion is formed with a thin width by cutting an inner surface side thereof.

  [1b] The swivel staircase according to the preceding item 1, wherein the assembly recess is a bottomed recess having a bottom.

  [1c] The rotating staircase according to the preceding item 1, wherein the assembly recess is formed by a through-hole having no bottom.

  [1d] The swivel staircase according to the preceding item 1, wherein the assembly concave portion is formed at a position corresponding to an end face of the vertically outer plate.

  [1e] The rotating staircase according to item 1, wherein the assembly recess is formed at an inner position along the vertical direction from an end surface of the vertical outer plate.

[2] While the assembly recess is provided in the middle in the vertical direction on the inner surface of the end of the vertical outer plate,
The swivel staircase according to the preceding item 1, wherein the assembly convex portion is provided in the middle in the vertical direction on the end surface of the laterally outer plate corresponding to the assembly concave portion.

  [2a] The swivel staircase according to any one of the preceding items 2, wherein the assembly recess is formed by cutting out an end portion of the vertical outer plate.

[3] The assembly recess is provided on either the upper part or the lower part of the inner surface of the end of the vertical outer plate,
The swirl staircase according to the preceding item 1, wherein the assembly protrusion is provided on either the upper side or the lower side of the end surface of the laterally outward plate corresponding to the assembly recess.

  [3a] The assembly staircase according to the preceding item 3, wherein the assembly concave portion is formed by notching an upper end portion of the end portion of the vertical outer plate.

  [3b] The assembling recess according to the preceding item 3, wherein the assembly recess is formed by cutting out the lower side portion of the end portion of the vertical outer plate.

  [3c] The swivel staircase according to the preceding item 3, wherein the vertical outer plate and the horizontal outer plate are phase-joined.

  [4] Either one of the upper end and the lower end of the assembly convex portion engages with the corresponding end edge of the upper end edge and the lower end edge of the assembly concave portion, so that the end upper end of the vertical outer plate The rotating staircase according to any one of the preceding items 1 to 3, which is arranged so as to coincide with an upper end portion of the laterally outer plate.

  [4a] The rotating staircase according to the preceding item 4, wherein the vertical dimension of the assembly concave part is set larger than the vertical dimension of the assembly convex part.

  [4b] The swirl staircase according to item 4, wherein the vertical dimension of the assembly concave part is set to a size substantially equal to the vertical dimension of the assembly convex part.

  [4c] The upper end of the assembling convex part is engaged with the upper end edge of the assembling concave part so that the upper end of the vertical outer plate coincides with the upper end of the lateral outer plate. The staircase according to item 4 above.

  [4d] The lower end of the assembly protrusion is engaged with the lower end edge of the assembly recess, so that the upper end of the vertical outer plate coincides with the upper end of the lateral outer plate. The staircase according to item 4 above.

[5] An outer peripheral side plate disposed on the outer peripheral one side edge and an outer peripheral front side plate disposed on the outer peripheral front side edge,
5. The circuit according to claim 1, wherein one of the outer peripheral side plate and the outer front side plate is configured as the vertical outer plate and the other is configured as the lateral outer plate. Stairs.

  [5a] The rotating staircase according to the above item 5, further comprising an outer peripheral side plate disposed on the outer peripheral other side edge.

  [5b] The turning staircase according to item 5 above, configured by a folding staircase that changes the direction by 180 °.

  [5c] The turning staircase according to the preceding item 5, which is constituted by a bent staircase whose direction is changed by 90 °.

[6] A straight staircase having a pair of side plates and step plates attached between the pair of side plates at a predetermined interval;
A staircase structure comprising: a rotating staircase assembled to an end of the straight staircase and described in any one of the preceding items 1 to 5.

  [6a] The staircase structure according to the above item 6, wherein the straight staircase includes a lower straight staircase in which the rotating staircase is assembled at an upper end and an upper straight staircase in which the rotating staircase is assembled at a lower end.

  According to the swivel staircase according to the invention [1], in the state where the assembly convex portion is fitted in the assembly concave portion, the end of the laterally outer plate is in the width direction (vertical direction of the assembly convex portion with respect to the vertical outer plate. Because it is configured to be movable along the direction), the assembly error can be absorbed by the movement, and the step board can be assembled with good positional accuracy, and the stair assembly work can be easily and accurately performed. It can be carried out.

  According to the rotating staircase according to the above inventions [2] and [3], the above-described effects can be obtained with certainty.

  According to the swirl staircase according to the invention [4], it is simple to engage either one of the upper end and the lower end of the assembly convex portion with the corresponding end edge of the upper end edge and the lower end edge of the assembly recess. The vertical outer plate and the horizontal outer plate can be aligned, and the assembly operation can be performed more easily and accurately.

  1 and 2 are views showing a staircase structure to which a rotating staircase (30) according to an embodiment of the present invention is applied. 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.

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

  Corresponding to the mounting position of the step plate (18), a plurality of step plate mounting grooves (12a) (12b) are provided at predetermined intervals on the inner surface side of the lower right outer plate (11a) and the lower right inner plate (11b). ) Is formed horizontally. Each step plate mounting groove (12a) (12b) is configured such that the rear end side is opened and the end edge of the step plate (18) can be inserted from the rear side of the outer plate (11a) (11b). Further, on the inner side surface of the outer plate (11a) (11b), the lower step from the tip of the upper step plate mounting groove (12a) (12b) between the adjacent step plate mounting grooves (12a) (12b). A plurality of kick plate mounting grooves (13a) (13b) are formed vertically to the base end portions of the plate mounting grooves (12a) (12b). Each kick plate mounting groove (13a) (13b) 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 outer plates (11a) (11b).

  The upper edge of the lower right outer plate (11a) is formed so that the upper side is cut out, and is formed as an upper cut-out joint (10a).

  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. 5 and 6, the upright staircase (20) includes a long plate-shaped outer plate (upper straight outer plate 21a) and inner plate (upper straight inner plate 21b), and both side plates (21a) (21b). ) 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 as described above. ing.

  As shown in FIGS. 10 and 11, the lower edge of the upper right outer plate (21 a) is configured as a lower notch joint (20 a).

  As shown in FIGS. 1 and 2, 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 respectively 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, 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 and 2, 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) arranged around the surrounding staircase (30), and 3 arranged at the center of the surrounding staircase (30) And inner side plates (51b) (61b) (71b).

  As shown in FIGS. 3, 5, and 7, the outer side plate includes an outer side plate (51 a) arranged along one side surface on the outer periphery of the circuit stair (30) and an outer circuit arranged along the front side surface. A front side plate (61a) and an outer side other side plate (71a) arranged along the other side surface are provided. In the present embodiment, one of the outer one side plate (51a) and the outer front side plate (61a) is configured as a vertical outer plate and the other is configured as a horizontal outer plate.

  As shown in FIG. 3, the outer one side plate (51 a) is disposed along the upper edge of the lower right outer plate (11 a), and one end edge (lower edge) side is a lower notch joint ( 50a).

  Further, first and second step plate mounting grooves (31a) and (32a) are formed on the inner surface side of the outer one side plate (51a) so as to extend in the horizontal direction.

  Further, on the inner surface side of the outer one side plate (51a), there are formed first and second kick plate mounting grooves (41a) (42a) extending downward from the tip end portions of the step plate mounting grooves (31a) (32a). 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 one side plate (51a). It is configured as follows.

  Further, as shown in FIGS. 8 to 10, a groove-shaped assembly recess (57a) extending perpendicularly to the rear end portion is formed on the inner surface side of the outer one side plate (51a).

  This outer one side plate (51a) is fixed to the support column (2) in a state in which the notch joining portion (50a) is joined to the notch joining portion (10a) of the lower right outer plate (11a). Thus, the outer one side plate (51a) is arranged along one side surface on the outer peripheral edge of the turning step (30).

  As shown in FIG. 7 (a), an assembling convex portion (80) corresponding to the assembling concave portion (57a) of the outer one side plate (51a) is formed at one end edge of the outer front side plate (61a). Is formed.

  As shown in FIGS. 7 to 10, the assembling convex portion (80) is cut off on the front side (inner surface side) to be provided with a cut portion (81), and by the width of the cut portion (81), A thickness direction dimension (convex width T) of the assembling convex part (80) is formed thin. The convex portion width (T) is set to be smaller (thinner) than the groove width (recessed portion width W) of the assembly concave portion (57a) of the outer one side plate (51a).

  Thus, in the state where the assembly convex part (80) is fitted in the assembly concave part (57a), the outer front side plate (61a) is moved back and forth with respect to the outer one side plate (51a) (of the assembly convex part 80). It is configured to be movable within the range of the width of the cut portion (81) along the width direction or the length direction of the outer side plate 51a.

  In this embodiment, the vertical dimension of the assembly convex part (80) in the outer front side plate (61a) is set smaller than the vertical dimension of the assembly concave part (57a) in the outer one side plate (51a). The outer front side plate (61a) is movable in the vertical direction with respect to the outer one side plate (51a) in a state where the assembly convex portion (80) is fitted in the assembly concave portion (57a). ing. Further, when the upper end surface (82) of the assembly convex portion (80) of the outer front side plate (61a) is joined to the upper end edge of the assembly concave portion (57a) of the outer one side plate (51a), At the joint portion of the plates (51a) and (61a), the upper end edge of the outer one side plate (51a) and the upper end edge of the outer front side plate (61a) are configured to coincide with each other. .

  In the present invention, the lower end surface (83) of the assembly convex portion (80) is joined to the lower end edge of the assembly concave portion (57a), so that the joint portions of the outer side plates (51a) (61a) are joined. The upper end edge of the outer one side plate (51a) and the upper end edge of the outer front side plate (61a) may be positioned so as to coincide with each other.

  Furthermore, you may set the vertical dimension of an assembly | attachment convex part (80) to a size substantially equal to the vertical dimension of an assembly recessed part (57a). However, as in this embodiment, by setting the vertical dimension of the assembly convex part (80) smaller than the vertical dimension of the assembly concave part (57a), the assembly concave part (80) of the assembly convex part (80) 57a) can be easily fitted, and the assembly workability can be improved.

  As shown in FIG. 7, on the inner surface side of the outer front side plate (61a), second to fourth step plates attached in the horizontal direction are attached corresponding to the second to fourth step plates (32) to (34). Grooves (32a) to (34a) are formed, and third and fourth kick plate attachment grooves (43a) extending vertically downward from the tips of the third and fourth step plate attachment grooves (33a) (34a) (44a) is formed. Furthermore, a vertically extending groove-like assembly recess (67a) is formed at the other end of the outer front side plate (61a).

  In the present embodiment, the second step plate mounting 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 column (2) in a state where the assembly convex portion (80) is inserted into the assembly concave portion (57a) of the one side plate (51a). Accordingly, the outer front side plate (61a) is disposed along the front side surface at the outer peripheral edge 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 one end edge side (upper edge side) is the upper notch joint (70a). It is configured as.

  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 the other end edge side (lower end edge side) of the outer periphery side plate (71a), an assembly convex portion (77a) is formed corresponding to the assembly recess portion (67a) of the outer periphery front side plate (61a). .

  The other outer side plate (71a) has its notch joining portion (70a) joined to the notch joining portion (20a) of the upper right outer plate (21a) and the assembly convex portion (77a) outside. It is fixed to the column (2) while being inserted into the assembly recess (67a) of the front plate (61a). Thereby, an outer periphery other side board (71a) is arrange | positioned along the other side surface in the outer periphery of the periphery staircase (30).

  In the present embodiment, the upper end surface of the assembling convex portion (77a) is joined to the upper end edge of the assembling concave portion (67a), so that the outer peripheral side plates (61a) (71a) The upper end edge of the end portion of the front side plate (61a) and the upper end edge of the end portion of the other side plate (71a) are positioned so as to coincide with each other.

  In the present invention, the lower end surface of the assembling convex portion (77a) is joined to the lower end edge of the assembling concave portion (67a), so that the outer circumference of the outer side plates (61a) and (71a) You may comprise so that the edge part upper end edge of a front side board (61a) and the edge part upper end edge of an outer periphery other side board (71a) may correspond.

  On the other hand, as shown in FIGS. 11 and 12, the inner side plate is fixed to the inner side one plate (51b) fixed to one side surface of the central column (1) at the center of the turning step (30) and the front side surface. The inner front side plate (61b) and the other inner side plate (71b) disposed on the other side surface are provided.

  The upper end of the lower straight inner plate (11b) is engaged with the inner one side plate (51b), and the lower end of the upper right inner plate (21b) is engaged with the inner inner side plate (71b). Is engaged.

  Each inner side plate (51b) to (71b) has a step plate mounting groove for inserting and supporting inner end portions of the first to fifth step plates (31) to (35), and first to fifth steps. Kick plate mounting grooves for inserting and supporting the inner end portions of the kick plates (41) to (45) are appropriately formed.

  The first to fifth step plates (31) to (35) in the turning staircase (30) correspond to the outer turning side plates (51a) (61a) (71a) and the inner turning side plates (51b) (61b) (71b). The first to fifth kick plate (41) to (45) are inserted into and fixed to the corrugated plate mounting grooves (31a) to (35a), and the corresponding first to fifth kick plate mounting grooves (41a). ) To (45a) to be fixed.

  The staircase structure of this embodiment in this configuration is constructed according to the following procedure when constructed from below.

  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 stairs (30) is assembled. That is, the outer peripheral one side plate (51a) is placed in a positioning state by laminating its lower notch joint portion (50a) to the upper notch joint portion (10a) of the lower right outer plate (11a). After fixing the upper end of the outer one side plate (51a) to the column (2), the lower end is fixed to the column (2). At this time, the outer one side plate (51a) is engaged with the upper notch joint portion (10a) of the lower right outer plate (11a) by engaging the lower notch joint portion (50a) with the both side plates (51a) (11a). ) Can be easily and accurately positioned. Further, by placing the notch joint portion (50a) of the outer one side plate (51a) on the notch joint portion (11a) of the lower right outer plate (11a), the notch joint portion side of the outer one side plate (51a) is placed. Can be temporarily placed and fixed, so that the fixing operation of the outer side plate (51a) can be performed efficiently and smoothly.

  Next, the outer front side plate (61a) is assembled. That is, with the assembly protrusion (80) of the front plate (61a) inserted into the assembly recess (57a) 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 (one side plate 51a side end) is fixed to the column (2) with screws or the like.

  At this time, as shown in FIG. 9, the assembling convex part (80) is arranged at the middle position in the front-rear direction of the assembling concave part (57a), and the gap (S) (S ) Is formed, and in the state where the screws are removed and the fixation is released, the outer front side plate (61a) is moved in the front-rear direction (width direction of the convex portion) by the gap (S) (S). It is arranged to be movable.

  When the assembly protrusion (80) is fitted into the assembly recess (57a), as described above, the upper end surface of the assembly protrusion (80) is connected to the upper end edge of the assembly recess (57a). By joining and locking, the upper end edge of the end portion of the outer side plate (51a) and the upper end edge of the end portion of the front front plate (61a) are joined at the joint portion of the outer side plates (51a) and (61a). Since it can be made to correspond, positioning between both outer side board (51a) (61a) can be performed easily.

  Subsequently, the other side plate (71a) is assembled around the outside. That is, in a state where the assembly convex portion (77a) of the outer side other plate (71a) is inserted into the assembly concave portion (67a) of the outer 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. That is, the upper side of the outer outer plate (71a) is positioned in a state where the notched joint portion (20a) of the upper right outer plate (21a) is positioned around the notched joint portion (70a) of the other side plate (71a). Fix the end (upper staircase side) to the column (2). 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 (2) (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 rotating 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 upper end portion of the lower right inner side plate (11b), and the front end edge is made to coincide with the front side surface of the central column (1). ) And fix to the central column (1).

  Next, the inner front side plate (61b) is fixed to the central column (1) so as to cover the front side end of the inner side one side plate (51b) with one side edge thereof.

  At this time, predetermined step plate mounting grooves and kick plate mounting grooves in the inner one side plate (51b) and the front side plate (61b) are used as the first and second step plates (31) and (32) and the first and second kick plates. (41) It arrange | positions so that it may fit in the inner edge of (42).

  Here, the second step plate (32) is disposed across the outer one side plate (51a) and the front side plate (61a), and is disposed across the inner one side plate (51b) and the front side plate (61b). Therefore, for example, if there is a slight error in the house structure even if it is within the allowable range, the second step plate (32) is displaced and the inner end of the second step plate (32) The edge cannot be disposed so as to fit into the step plate mounting groove of the inner side plates (51b) (61b), and the step plate (32) and the inner side plates (51b) (61b) may not be assembled. .

  In such a case, in this embodiment, the position shift of the step plate (32) can be easily absorbed, and the step plate (32) and the inner side plates (51b) (61b) can be reliably assembled. That is, in this embodiment, the width (T) of the assembly protrusion (80) at the end of the outer front side plate (61a) on the one side plate (51a) side is set to the assembly recess of the outer periphery one side plate (51a). It is formed narrower than the width (W) of (57a), and the outer front side plate (61a) can be moved in the front-rear direction within the range of the recess width (W) relative to the one side plate (51a) by the narrow width. It is configured. For this reason, once the fixation of the outer front plate (61a) to the column (2) and the like is once released, the outer front plate (61a) is moved back and forth with respect to the one side plate (51a), whereby the step Misalignment between the plate (32) and the inner side plates (51b) and (61b) can be absorbed, and the alignment can be performed accurately. Therefore, the step plate and the inner side plates (51b) and (61b) can be reliably assembled.

  Needless to say, the outer front side plate (61a) moved back and forth by the above alignment is fixed to the support column (2) again.

  The positioning of the outer front plate (61a) may be performed immediately after the outer front plate (61a) is attached. That is, when the error amount of the house structure can be accurately grasped in advance, the outer front plate (61a) is assembled immediately after the outer front plate (61a) is mounted so as to absorb the error. By moving back and forth within the range of the recessed portion (57a) and positioning it, there is no error when assembling the step plate (32) and the inner side plates (51b) (61b) in the subsequent process, and smooth Can be assembled. Similarly, the position of the outer front side plate (61a) can be adjusted when the second step plate (32) is assembled to the outer side plate (51a) (61a).

  After the inner front plate (61b) is assembled, the third and fourth step plates (33) (34) are replaced with the corresponding step plates of the outer front plates (61a) (71a) and the inner front plate (61b). It is inserted into the mounting grooves (33a) and (34a), respectively. Further, the third and fourth kick plates (43) and (44) are respectively inserted and attached to the corresponding kick plate mounting grooves (43a) and (44a).

  Subsequently, the inner side other side plate (71b) is fixed to the central column (1) so as to cover the other side end of the inner side front side plate (51b) with its front side edge.

  Thereafter, the fifth step plate (35) and the fifth kick plate (45) are attached to the fifth step plate attachment groove (35a) and the fifth rise plate attachment of the outer side other plate (71a) and the inner side other plate (71b). Each is inserted into the groove (45a).

  After assembling the turning stairs (30) in this way, the upper straight inner plate (21b) is fixed to the columns (1) and (2) in the upper straight stairs (20). At this time, the upper straight inner plate (21b) is fixed to the support columns (1) and (2) with its lower end joined inward to the other side plate (71b) and with its upper end grounded to the floor of the floor. .

  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 rotating staircase of the present embodiment, the assembling convex portion (80) of the outer front side plate (61a) inserted into the assembling concave portion (57a) of the outer one side plate (51a) is assembled. It is formed narrow with respect to the recessed portion (57a), and the outer front side plate (61a) is configured to be movable in the width direction (front-rear direction) of the assembled convex portion (80) with respect to the outer side one plate (51a). As a result, the assembly error can be absorbed by the movement, and the step plate (32) can be reliably assembled with high positional accuracy. As a result, the stair assembly work can be performed efficiently and smoothly.

  Moreover, in this embodiment, since the convex part (80) is formed in a narrow width by cutting away the inner surface side of the assembly convex part (80), when viewed from the inside of the stairs, the outer front side plate ( The assembly recess (57a) is reliably concealed by 61a). For this reason, no gap is formed in the uneven joint portion between the outer one side plate (51a) and the outer front side plate (61a), and a good aesthetic appearance can be maintained.

  Further, in the present embodiment, since the outer front side plate (61a) is configured to be movable back and forth, it is provided between the outer front side plate (61a) and the wall base member (not shown) around the stairs. Although a gap may be formed, normally, a panel such as a gypsum board is assembled along the upper edge of the outer front side plate (61a), so that the above-mentioned gap can be reliably concealed by this panel, Good aesthetics can be maintained.

  In the above embodiment, the assembly recess (57a) formed on the outer one side plate (51a) is formed in a groove shape having a bottom surface. However, the present invention is not limited to this, and in the present invention, the assembly recess ( 57a) may be configured as a slot-shaped through hole that penetrates the outer side one side plate (51a).

  Furthermore, in the said embodiment, although the assembly recessed part (57a) is formed in the position which entered the inner side (downward staircase side) for a while from the end surface of the outer side one side board (51a), it is not restricted only to that, this invention As shown in FIGS. 13 to 17 to be described later, the assembly recess (57a) may be formed at a position corresponding to the end surface of the outer side plate (51a).

  Moreover, in the said embodiment, although the assembly recessed part (57a) is formed in groove shape, in this invention, it is not necessarily required to form the assembly recessed part (57a) in groove shape. For example, as shown in FIG. 13 and FIG. 14, the middle portion of the end of the outer side plate (51 a) may be cut out, and the cut-out recess may be configured as an assembly recess (57 a). Also in this case, the assembly recess (57a) may be configured as a through-hole penetrating from the inner surface to the outer surface of the outer one side plate (51a).

  Further, the outer one side plate (51a) and the outer front side plate (61a) may be joined by a phaseless joining method. For example, as shown in FIG. 15 and FIG. 16, an assembly recess (57a) having a lower notch shape with the lower notch formed at the joining side end of the outer one side plate (51a), At the joining side end portion of the side plate (61a), the upper notch is formed to form an assembly notch with an upper notch shape (80), and both joining portions (57a) (80) are phase-joined (lower winning joining state). ) May be combined. Further, as shown in FIG. 17, an assembly recess (57a) having an upper notch shape with the upper side notched is formed at the joining side end of the outer one side plate (51a). At the joining side end of the front side plate (61a), the lower side is notched to form a lower notch-shaped assembly convex part (80), and both joining parts (57a) (80) are phase-joined ( You may make it combine in a top winning joint state. Needless to say, in each of the modifications shown in FIGS. 13 to 17, by setting the width of the assembly protrusion (80) to be smaller than the width of the assembly recess (57a), Similar effects can be obtained. Here, in the modified examples of FIGS. 13 to 17, the one end surface of the assembly recess (57a) is opened, and a spacer, a wall base member, and the like are arranged on the open end surface (57a). Therefore, the open end surface (57b) of the assembly recess (57a) is closed by these members. Accordingly, one side wall portion of the assembly recess (57a) is constituted by a closing member such as a spacer.

  Also in the modified examples of FIGS. 15 to 17, as in the above-described embodiment, the assembly recess (57a) is formed so that the inner side of the side plate (57a) is recessed without penetrating the outer side plate (57a). You may form in a bottom shape.

  Further, in the present invention, the same structure as the joining structure between the outer one side plate (51a) and the outer front side plate (61a) is the same as the joining portion between the outer front side plate (61a) and the other outer side plate (71a). It is also possible to apply to the above, and even in that case, similar effects can be obtained as described above.

  Further, in the above embodiment, the case where the present invention is applied to a folded staircase whose direction is changed by 180 ° in the middle has been described as an example. However, the present invention is not limited to this. It can be applied to other staircases.

  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.

  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 staircase steps. It can also be applied to three-stage, four-stage, and six-stage types, and can also be applied to the case where 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 particularly limited. For example, a step plate support groove is engraved in the central column (1) and the inner portion of the step plate is supported around the groove, or a metal fitting such as an L-shaped bracket is attached to the outer peripheral surface of the central column (1), You may make it support the inner side part of a corrugated board around the hardware.

It is a perspective view which shows the staircase structure to which the rotation staircase which is embodiment of this invention was applied. 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 outward 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. The inner side figure at the time of seeing the outer front side board in the surrounding staircase of the embodiment from the direction of arrow A3 in FIG. 2, the inner side figure showing the assembly convex part in the outer front side board of the embodiment in an enlarged manner is there. It is a perspective view which decomposes | disassembles and shows the periphery of the junction part of the external one side board and front side board in the rotation staircase of embodiment. FIG. 9 is a horizontal sectional view showing the periphery of the joint in FIG. 8. FIG. 10 is an exploded cross-sectional view of FIG. 9. It is a top view which shows the inner periphery side board periphery in the rotation staircase of embodiment. FIG. 12 is an exploded plan view of FIG. 11. It is a perspective view which decomposes | disassembles and shows the periphery of the junction part of the outer periphery one side plate and front side plate which are the 1st modification of this invention. FIG. 14 is a horizontal cross-sectional view showing the periphery of the joint in FIG. 13. It is a perspective view which decomposes | disassembles and shows the periphery of the junction part of the outer periphery one side plate and front side plate which are the 2nd modification of this invention. FIG. 16 is a horizontal cross-sectional view showing the periphery of the joint in FIG. 15. It is a perspective view which decomposes | disassembles and shows the periphery of the junction part of the outer side one side plate and front side plate of the rotation staircase which is the 3rd modification of this invention.

Explanation of symbols

30 ... Stairs 31-35 ... Step plate 31a ... Step plate mounting groove 51a ... Outer one side plate (outer plate)
57a ... Assembling recess 61a ... Outer front plate (outer plate)
71a ... Outside side plate (outer plate)
80: Assembling convex part 82 ... Upper end face 83 ... Lower end face T ... Convex part width W ... Concave part width

Claims (4)

Out of two step board supporting outer plates arranged orthogonal to each other at the corner portion, the laterally outer plate arranged along the lateral direction on the inner surface of the end of the longitudinally oriented outer plate arranged along the vertical direction A rotating staircase assembled so that the end face of the
An assembly recess is provided on the inner surface of the end portion of the vertical outer plate, and an assembly projection corresponding to the assembly recess is provided on the end surface of the lateral outer plate,
In a state where the width of the assembling convex portion is set smaller than the width of the assembling concave portion and the assembling convex portion is engaged with the assembling concave portion, the end portion of the laterally outer plate is the vertical outer side. A rotating staircase configured to be movable along a width direction (longitudinal direction) of the assembly convex portion with respect to a plate. The assembly concave portion is provided in the middle in the vertical direction on the inner surface of the end portion of the vertical outer plate,
The swivel staircase according to claim 1, wherein the assembly convex portion is provided in the middle in the vertical direction on the end surface of the laterally outer plate corresponding to the assembly concave portion. The assembly recess is provided on either the upper side or the lower side of the inner surface of the end of the vertical outer plate,
The swivel staircase according to claim 1, wherein the assembling convex portion is provided on either the upper side portion or the lower side portion of the end surface of the laterally outer plate corresponding to the assembling concave portion.   Either one of the upper end and the lower end of the assembly convex portion engages with a corresponding edge of the upper end edge and the lower end edge of the assembly recess, so that the upper end portion of the vertical outer plate is in the lateral direction. The swirl staircase according to any one of claims 1 to 3, wherein the staircase is disposed so as to coincide with an upper end of the outer plate.

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