JP7270708B2 - Stairs and how to assemble stairs - Google Patents

Description

The present invention relates to a staircase with sideboards, treads and risers and a method of assembling the staircase.

Conventionally, a staircase is used that includes two side plates and a plurality of treads and risers.
The two side plates are attached to the two opposing wall surfaces. One surface of the side plate is in contact with the wall surface, and the other surface of the side plate is provided with a plurality of horizontally long grooves and a plurality of vertically long grooves whose upper ends are continuous with the horizontally long grooves in a stepped manner. . The rear end of the oblong groove is open. The tread is inserted into the oblong groove from the rear. A groove extending in a direction orthogonal to the side plate is provided on the lower surface of the step plate. The lower ends of the longitudinal grooves in the side plates are open. The risers are inserted from below into the longitudinal grooves and further inserted into the grooves of the treads from below.

When the side panels are attached to the wall surface, the bottom vertical groove is closed by the floor surface, so that the bottom riser cannot be inserted into the vertical groove from below.
In view of this, Patent Literature 1 proposes providing a cutout portion in the side plate. The cut-out portion is a recess formed by cutting the lower side of the lowest horizontal groove and the rear side of the vertical groove in the side plate, and the rear portion of the concave portion is open. After the side plates are attached to the wall surface, the step plate with the riser plate inserted in the groove is inserted from the rear into the cutout. Since the cut-away portion does not have a portion that supports the tread from below and a portion that supports the riser from the rear, after the tread and the riser are inserted, the support member is placed on the lower surface of the tread and the rear surface of the riser. Attached to the resection in contacting fashion.

The support member includes a wedge-shaped member whose height decreases toward the front of the stairs and an inverted wedge-shaped member whose height decreases toward the rear of the stairs. The inverted wedge-shaped member contacts the rear surface of the riser, is placed on the floor so as to be spaced apart from the lower surface of the tread, and is screwed to the inner surface of the cutout. The wedge-shaped member is inserted between the inverted wedge-shaped member and the lower surface of the step plate so as to contact the lower surface of the step plate, and screwed to the inner surface of the cutout.

JP 2011-236577 A

In general, the treads are arranged horizontally, the risers are arranged perpendicular to the treads, and the side plates extend obliquely upward from the front side to the rear side. Therefore, in the case of the staircase described in Patent Document 1, the portion of the inner surface of the cutout portion located below the treads and behind the risers forms a right-angled triangular shape. Since the right triangle has an acute downward angle and an acute rearward angle, the inner surface of the cutout has a narrow front-to-back range within which the inverted wedge-like member can be attached to the inner surface of the cutout. As a result, the support member cannot be stably attached to the inner surface of the cut portion, and there is a possibility that the step plate and the riser plate cannot be stably received.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and its main object is to provide a staircase and a method for assembling the staircase that can stably receive the treads and risers.

A staircase according to the present embodiment has an insertion portion on one surface, a wall surface on the other surface, and a floor surface on a part of an end surface, the side plate attached to the wall surface; A staircase comprising a lowermost tread that is inserted into an insertion portion and has a groove extending in a direction intersecting the side plate on the lower surface, and a riser that is inserted into the insertion portion and the groove. wherein the inserted portion is a recess or an opening, and the rear portion of the inserted portion is open and is in contact with the wall surface, the lower surface of the step plate, the rear surface of the riser plate, and the floor surface. and a plate support member attached to the wall surface.

In the staircase according to the present embodiment, the inserted portion extends in the front-rear direction and has an open rear end portion, a horizontally elongated concave portion into which the step plate is inserted, and a vertically elongated recess portion with an upper end portion that said recess having a vertically elongated recess that continues in the middle of a horizontally elongated recess, is open at the rear, and has a vertically elongated recess into which said riser plate is inserted; An opening having an open rear portion is provided in a rear portion thereof, and the plate receiving member is in contact with the wall surface through the opening.

In the staircase according to this embodiment, the length of the horizontally elongated recess in the up-down direction is shorter than the thickness of the tread, the length of the vertically elongated recess in the front-rear direction is shorter than the thickness of the riser, and the plate support The member is plate-shaped and has one surface in contact with the wall surface, the lower surface of the step plate, the rear surface of the riser plate, and three end surfaces in contact with the floor surface. do.

In the staircase according to the present embodiment, the plate support member includes one surface in contact with the wall surface, two end surfaces in contact with the rear surface and the floor surface of the riser plate, and the A plate-like plate having another end surface spaced downward from the lower surface, and is attached to the wall surface; a mounting portion attached to the riser plate; and is inserted between the lower surface of the step plate and the other end surface of the riser plate so as to contact the lower surface of the step plate. and

In the staircase according to the present embodiment, the plate support member has a plate shape having one surface in contact with the wall surface and two end surfaces in contact with the rear surface of the riser plate and the floor surface. , a riser plate receiver attached to the wall surface, a first mounting portion attached to the riser plate receiver, and projecting from the first mounting portion toward the opposite side of the wall surface, A stepped plate receiver having a second mounting portion attached to the lower surface of the stepped plate is provided.

A method for assembling a staircase according to the present embodiment includes a side plate having an insertion portion on one surface, a wall surface on the other surface, a floor surface on a part of an end surface, and a side plate attached to the wall surface; A method for assembling a staircase comprising: a lowermost tread that is inserted into an insertion section and provided with a groove extending in a direction intersecting the side plate; and a riser that is inserted into the inserted section and the groove. wherein the inserted portion is a concave portion or an opening, the side plate is open on one side in one direction along the one surface and along the part of the end face, the step plate, and the riser plate; A plate receiving member for receiving the stepped plate and the riser plate is prepared, the side plate is attached to the wall surface with the one side facing the rear side, and after the side plate is attached, the riser plate is inserted into the groove. is inserted into the insertion portion from behind, or the step plate without the riser inserted into the groove is inserted into the insertion portion, and the step is inserted into the groove. When the step plate without the riser plate inserted is inserted into the inserted portion, the riser plate is tilted forward and inserted into the groove from below and inserted into the inserted portion from behind. After the riser board is inserted, the board support member is attached to the wall surface so that the board support member contacts the wall surface, the lower surface of the tread, the rear surface of the riser board, and the floor surface. Characterized by

In the method for assembling the stairs according to the present embodiment, the inserted portion extends in the one direction and extends in the laterally elongated recess with the one side open and in the other direction that intersects the one direction along the one surface. and a vertically elongated recess that is open on one side from the middle of the horizontally elongated recess to the part of the end face, wherein the stepped plate is inserted into the horizontally elongated recess, and the riser is inserted into the vertically elongated recess. An opening into which a plate is inserted and the one side of which is open is provided on the side of the other surface of the side plate near the part of the end face of the horizontally elongated recess and on the one side portion of the vertically elongated recess. 2. The plate support member is brought into contact with the wall surface through the opening when the plate support member is attached to the wall surface.

In the stair assembly method according to the present embodiment, the length of the horizontally elongated recess in the other direction is shorter than the thickness of the tread, and the length of the vertically elongated recess in the one direction is shorter than the thickness of the riser. In short, the plate support member has a plate shape and has one surface, two end surfaces parallel to each other, and the other end surface in a direction perpendicular to the end surfaces. The one surface of the member is brought into contact with the wall surface, the two end surfaces of the plate support member are brought into contact with the lower surface and the floor surface of the step plate, and the other end surface of the plate support member is contacted with the riser plate. It is characterized in that it is brought into contact with the rear surface of the

In the method for assembling the stairs according to the present embodiment, the board support member is plate-shaped and has one surface, two end faces parallel to each other, and the other end face in a direction orthogonal to the end faces; A mounting portion and a step plate receiver having an insertion portion protruding from the mounting portion are provided. contact the floor surface and the rear surface of the riser plate, and the other of the two end faces of the riser plate receiver is spaced downward from the lower surface of the tread plate In this way, the riser plate receiver is attached to the wall surface, and after the riser plate receiver is attached, the distal end of the insertion portion faces the wall surface, and the insertion portion is in contact with the lower surface of the step plate. The insertion portion is inserted between the lower surface of the tread and the other side of the riser receiver, and after the insertion of the insertion portion, the attachment portion is attached to the riser receiver.

In the method for assembling the stairs according to the present embodiment, the board support member has a plate shape and includes a riser support having one surface and two end surfaces in directions perpendicular to each other, a first mounting portion, and the first mounting portion. a stepped plate receiver having a second mounting portion projecting from the mounting portion, wherein the second mounting portion extends from the first mounting portion to the wall surface prior to inserting the stepped plate into the oblong recess; side, and the second mounting portion is mounted on the lower surface of the corrugated plate so that the first mounting portion projects downward from the second mounting portion; When the member is attached to the wall surface, the one surface of the riser plate is in contact with the wall surface, and the two end surfaces of the riser plate are in contact with the floor surface and the rear surface of the riser plate. A riser plate receiver is attached to the wall surface, and after mounting the riser plate receiver, the first attachment portion is attached to the riser plate receiver.

In this embodiment, the inserted portion is provided on one surface of the side plate. Since the rear portion of the inserted portion is open, the stepped plate having the riser inserted into the groove can be inserted into the inserted portion from behind. Alternatively, it is possible to first insert the tread into the inserted portion from the rear, and then insert the riser into the groove of the tread from below and into the inserted portion from the rear. In other words, it is easy to attach the treads and risers to the side plates, and the degree of freedom in assembling the stairs is high.

The plate receiving member is attached to the wall surface. Since the wall surface has a wide range in the front-rear direction in which the plate support member can be attached, the plate support member can be stably attached to the wall surface. The plate receiving member stably attached to the wall surface can stably receive the lower surface of the step plate and the rear surface of the riser plate by contacting the lower surface of the step plate and the rear surface of the riser plate. Further, the downward load applied from the step plate to the plate receiving member can be received by the floor surface.

In this embodiment, the step plate is inserted into the oblong concave portion of the inserted portion, and the riser is inserted into the vertically long concave portion of the inserted portion. The opening is provided on the other surface of the side plate below the horizontally elongated recess and on the rear side of the vertically elongated recess, and the plate receiving member comes into contact with the wall surface through the opening of the side plate.
Since the concave portion is provided in the side plate as the inserted portion, part of the side plate exists in the portion where the step plate and the riser plate are inserted. Therefore, the mechanical strength of the side plate is high.

In this embodiment, the length in the vertical direction of the horizontally elongated concave portion of the inserted portion is shorter than the thickness of the step plate, and the length of the vertically elongated concave portion of the inserted portion in the front-to-rear direction is shorter than the thickness of the riser. is also short. Therefore, the oblong concave portion does not protrude downward from the step plate, and the longitudinal concave portion does not protrude rearward from the riser plate. Therefore, the plate-like plate receiving member can contact the lower surface of the step plate, the rear surface of the riser plate, and the floor surface without being obstructed by the side plate, and can also contact the wall surface through the opening.
Since the plate receiving member is attached to the wall surface so that one surface of the plate receiving member contacts the wall surface, the posture of the plate receiving member can be stabilized when the plate receiving member is attached to the wall surface.

In this embodiment, the plate support member includes a riser plate support and a step plate support which are separate members.
The riser plate receiver has a plate shape and contacts the wall surface through the opening of the side plate, and also contacts the rear surface of the riser plate and the floor surface.
The tread receiver has an attachment portion and an insert portion. The insertion portion is inserted between the riser plate receiver and the lower surface of the tread and contacts the lower surface of the tread.
After the insert is inserted between the riser receiver and the lower surface of the tread, the mounting section is attached to the riser receiver. Therefore, it is possible to adjust the mounting positions of the mounting portions to the riser receivers so that the treads do not incline due to, for example, errors in the size or arrangement of each member, or adverse effects such as unevenness of the floor surface.

In this embodiment, the plate support member includes a riser plate support and a step plate support which are separate members.
The riser plate receiver has a plate shape and contacts the wall surface through the opening of the side plate, and also contacts the rear surface of the riser plate and the floor surface.
The board receiver has a first mounting portion and a second mounting portion. The second mounting portion contacts and attaches to the lower surface of the tread before the tread is inserted into the oblong recess of the side plate.
The first mounting portion is attached to the riser receiver after the step board to which the second mounting member is attached is inserted into the oblong recess of the side plate. Therefore, it is necessary to adjust the mounting position of the first mounting portion to the riser receiver so that the tread does not incline due to, for example, an error in the size or arrangement of each member, or an adverse effect such as an uneven floor surface. can be done.

In addition, it is not necessary to attach the second mounting portion to the lower surface of the tread after the tread is inserted into the horizontally elongated recess of the side plate, which facilitates the assembly of the stairs.

According to the stairs and the method for assembling the stairs according to the present embodiment, the treads and the riser can be stably received.

4 is a side view showing stairs according to Embodiment 1. FIG. FIG. 2 is a cross-sectional view of the stairs taken along line II-II in FIG. 1; It is a side view which shows the side plate with which stairs are provided. It is a side view which shows the board support member with which stairs are provided. FIG. 11 is a side view showing a staircase according to Embodiment 2; FIG. 6 is a cross-sectional view of the staircase taken along line VI-VI in FIG. 5; It is a side view which shows the side plate with which stairs are equipped, and the riser board support of a board support member. FIG. 10 is a side view for explaining attachment of the board support member of the board support member; FIG. 11 is a cross-sectional view of a staircase according to Embodiment 3; It is a side view for demonstrating attachment of the step plate support of the plate support member with which stairs are provided. FIG. 11 is a side view showing stairs according to Embodiment 4; FIG. 12 is a cross-sectional view of the stairs taken along line XII-XII in FIG. 11; It is a side view for demonstrating attachment of the lowermost step board and riser board which a stair is equipped with. It is a side view for demonstrating attachment of the lowermost step board with which stairs are equipped. It is a side view for demonstrating attachment of the bottom board which a stair is equipped with.

Hereinafter, the present invention will be described in detail based on the drawings showing its embodiments.

Embodiment 1.
FIG. 1 is a side view showing stairs according to Embodiment 1. FIG. FIG. 2 is a cross-sectional view of the stairs taken along line II--II in FIG.
In the figure, 1 is a staircase, and the staircase 1 is a straight staircase provided between wall surfaces 21, 21 facing each other. The staircase 1 includes two side plates 3, 3, treads 41, 42, risers 43, 44, and two plate receiving members 5,5.

FIG. 3 is a side view showing the side plate 3 included in the staircase 1. FIG.
As shown in FIGS. 1 to 3, each side plate 3 is attached to the wall surface 21 so that one surface of the side plate 3 is in contact with the wall surface 21. As shown in FIGS. Hereinafter, the one surface/the other surface of the side plate 3 are referred to as the outer surface 3a/inner surface 3b of the side plate 3. As shown in FIG.
The side plate 3 extends so as to incline from the lower floor side to the upper floor side (from the lower left side to the upper right side in FIGS. 1 and 3). The side plate 3 has end faces 3c and 3d extending in the longitudinal direction of the side plate 3, respectively. The end faces 3c and 3d are parallel to each other, and the end face 3c is above the end face 3d. Moreover, the side plate 3 has a front end surface 3e and a lower end surface 3f (part of the end surface). The front end surface 3e is perpendicular to the floor surface 22 and continues to the end surface 3c. The lower end surface 3f is in contact with the floor surface 22 and is continuous with the front end surface 3e. The longitudinal direction of the stairs 1 (horizontal direction in FIGS. 1 and 3) is one direction along the inner surface 3b of the side plate 3 and along the lower end surface 3f, and the vertical direction of the stair 1 is along the inner surface 3b of the side plate 3. It is the other direction that intersects with the front-rear direction.

The inner surface 3 b of the side plate 3 is provided with an inserted portion 31 , an opening 32 , a lateral groove 33 and a vertical groove 34 .
The inserted portion 31 has a horizontally elongated concave portion 311 and a vertically elongated concave portion 312 . The depth of each of the horizontally elongated recess 311 and the vertically elongated recess 312 is approximately half the thickness of the side plate 3 .
The oblong concave portion 311 extends in the front-rear direction of the staircase 1 and extends over the end face 3d. The rear end portion (the right end portion in FIGS. 1 and 3) of the oblong concave portion 311 is open.
The vertically elongated recess 312 extends vertically and extends over the lower end surface 3f. The bottom end of the vertically elongated recess 312 is closed by the floor surface 22 . The upper end of the vertically elongated recess 312 is continuous with the vicinity of the front end of the horizontally elongated recess 311 .

The opening 32 is provided on the outer surface 3a of the side plate 3 below the horizontally elongated recess 311 and on the rear side of the vertically elongated recess 312, and extends over the end surface 3d and the lower end surface 3f. The rear portion of the opening 32 is open. A lower portion of the opening 32 is closed by the floor surface 22 . A wall surface 21 closes the opening 32 on the side of the outer surface 3 a of the side plate 3 .

The depth of each of the lateral grooves 33 and vertical grooves 34 is approximately half the thickness of the side plate 3 .
The side plate 3 is provided with N lateral grooves 33, 33, . However, N is an integer of N≧2. The lateral groove 33 extends in the front-rear direction. The rear end of the lateral groove 33 is open.
The upper end of the longitudinal groove 34 is continuous with the vicinity of the front end of the lateral groove 33 . A longitudinal groove 34 is provided for each lateral groove 33 and extends vertically. The lower ends of the longitudinal grooves 34 are open.
The lateral grooves 33, 33, . . . and the vertical grooves 34, 34, . Among the vertical grooves 34, 34, . . . Of the vertical grooves 34, 34, . . . , each of the vertical grooves 34 except for the lowest vertical groove 34 intersects with the horizontal groove 33 one step below the horizontal groove 33 to which the vertical groove 34 is continuous.

FIG. 1 shows a cross section of the treads 41, 42 and the risers 43, 44 taken along line II in FIG.
Each of the step plates 41, 42 and the risers 43, 44 has a rectangular shape elongated in one direction.
The tread 41 is the bottom tread of the staircase 1 . The stepped plate 41 is spanned between the side plates 3, 3 such that the longitudinal direction of the stepped plate 41 is aligned with the facing direction of the side plates 3, 3, and one surface of the stepped plate 41 is horizontal and upward. attached to the A groove 411 is provided on the lower surface of the step plate 41 over the entire length of the step plate 41 in the longitudinal direction.

Both ends of the step plate 41 in the longitudinal direction are inserted into the oblong concave portions 311, 311 of the side plates 3, 3. As shown in FIG. The thickness A1 of the step plate 41 is longer than the vertical length A2 of the oblong concave portion 311 .
The interior of the oblong concave portion 311 includes a bottom surface (the innermost surface in the depth direction of the oblong concave portion 311), a front end surface, an upper side surface, and a lower side surface. The lower side surface of the horizontally long recess 311 is between the front end surface of the horizontally long recess 311 and the vertically long recess 312 . The bottom surface of the oblong concave portion 311 is in contact with one longitudinal end surface of the step plate 41 . The front end surface, upper side surface, and lower side surface of the oblong concave portion 311 are in contact with the front end surface, upper surface, and lower surface of the step plate 41 .

The riser 43 is the lowermost riser of the stairs 1 . The riser plate 43 hangs down from the step plate 41 to the floor surface 22 so that the longitudinal direction of the riser plate 43 is along the facing direction of the side plates 3 , 3 . The upper end of the riser plate 43 is inserted into the groove 411 and attached to the lower surface of the step plate 41 . A lower end surface of the riser plate 43 is in contact with the floor surface 22 .
Both ends of the riser plate 43 in the longitudinal direction are inserted into the vertically elongated concave portions 312, 312 of the side plates 3, 3. As shown in FIG. The thickness B1 of the riser plate 43 is longer than the length B2 of the longitudinal recess 312 in the front-rear direction.
The interior of the vertically elongated recess 312 has a bottom surface (the deepest surface of the vertically elongated recess 312 in the depth direction) and a front side surface. The bottom surface of the vertically elongated concave portion 312 is in contact with one longitudinal end surface of the riser plate 43 . The front side surface of the vertically long concave portion 312 is in contact with the front surface of the riser plate 43 .

The inserted portion 31 having the horizontally elongated concave portion 311 and the vertically elongated concave portion 312 as described above includes the upper surface and the front end surface of the step plate 41 in which the riser plate 43 is inserted into the groove 411, the front surface of the riser plate 43, and the step plate 41. It is a concave portion having a peripheral edge along the lower surface of the step plate 41 located between the front end surface and the front surface of the riser plate 43, and the rear portion of the inserted portion 31 is open.

The staircase 1 has N treads 42. - 特許庁Each step plate 42 is bridged between the side plates 3, 3 such that the longitudinal direction of the step plate 42 is along the facing direction of the side plates 3, 3, and one surface of the step plate 42 is horizontal and upward. 3 is attached. A groove 421 is provided on the lower surface of the step plate 42 over the entire length in the longitudinal direction.
Both ends of the step plate 42 in the longitudinal direction are inserted into the lateral grooves 33, 33 of the side plates 3, 3. As shown in FIG.

The interior of the lateral groove 33 has a bottom surface (the deepest surface of the lateral groove 33 in the depth direction), a front end surface, an upper side surface, a lower side surface, and an inclined side surface. The lower side surface of the lateral groove 33 is located between the front end surface of the lateral groove 33 and the vertical groove 34, and there is an inclined side surface behind the vertical groove 34. - 特許庁The inclined side surface of the lateral groove 33 faces the upper side surface and is inclined downward toward the rear side. The bottom surface of the lateral groove 33 is in contact with one longitudinal end surface of the step plate 42 . The front end surface, upper side surface and lower side surface of the lateral groove 33 are in contact with the front end surface, upper surface and lower surface of the step plate 42 . A wedge-shaped member (not shown) is fitted between the inclined side surface of the lateral groove 33 and the lower side surface of the step plate 42 .

The staircase 1 has N risers 44. - 特許庁
Among the risers 44 , 44 , . . . , the lowest riser 44 is arranged between the step 41 and the step 42 one step above the step 41 . The lowermost riser plate 44 hangs down from the step plate 42 to the step plate 41 so that the longitudinal direction of the riser plate 44 is along the opposing direction of the side plates 3 , 3 . The upper end of the riser plate 44 is inserted into the groove 421 and attached to the lower surface of the step plate 42 . A lower end portion of the riser plate 44 is attached to the rear end surface of the step plate 41 .
Each of the riser plates 44, 44, . Each riser board 44 has its longitudinal direction along the facing direction of the side boards 3, 3, and hangs down from the upper floor side board 42 to the lower floor side board 42. - 特許庁The upper end of the riser plate 44 is inserted into the groove 421 and attached to the lower surface of the step plate 42 on the upper floor side. The lower end of the riser 44 is attached to the rear end surface of the tread 42 on the lower floor side.

Both longitudinal ends of each riser plate 44 are inserted into the vertical grooves 34, 34 of the side plates 3, 3. As shown in FIG.
The interior of the flute 34 has a bottom surface (the innermost surface of the flute 34 in the depth direction), a front side surface, and a rear side surface. The bottom surface of the longitudinal groove 34 is in contact with one longitudinal end surface of the riser plate 44 . The front and rear sides of the flute 34 contact the front and rear sides of the riser 44 .

FIG. 4 is a side view showing the board support member 5 provided in the staircase 1. FIG.
Each plate receiving member 5 is a rectangular plate (see FIGS. 1, 2 and 4). One surface 5a of the plate receiving member 5 contacts the wall surface 21, and the upper end surface 5b, the front end surface 5c, and the lower end surface 5d (three end surfaces) of the plate receiving member 5 are the lower surface of the step plate 41, It is attached to the wall surface 21 so as to contact the rear surface of the riser plate 43 and the floor surface 22 . The plate receiving member 5 is in contact with the wall surface 21 through the opening 32 of the side plate 3 .

In the present embodiment, the thickness of the plate receiving member 5 is about the same as the thickness of the side plate 3, and the depth of each of the horizontally elongated recesses 311 and the vertically elongated recesses 312 is about half the thickness of the side plate 3. The upper end surface 5b and the front end surface 5c are in contact with the lower surface of the step plate 41 and the rear surface of the riser plate 43 at about half the thickness of the board support member 5. As shown in FIG.
The vertical length C1 of the plate receiving member 5 is approximately the same as the height C2 from the floor surface 22 to the lower surface of the step plate 41, and the front-to-rear length D1 of the plate receiving member 5 extends from the rear surface of the riser plate 43 to the step plate. The length to the rear end surface of 41 is D2 or more (D1=D2 in the figure).

Note that the plate receiving member 5 is not limited to a rectangular shape or a plate shape. The plate receiving member 5 may have four surfaces contacting the wall surface 21, the lower surface of the step plate 41, the rear surface of the riser plate 43, and the floor surface 22, and may be, for example, a regular octagonal plate or a rectangular parallelepiped. .

Next, a method for assembling the staircase 1 will be described.
First, the side plates 3, 3 are attached to the wall surfaces 21, 21 (see FIG. 3).
One long side of the riser 43 is inserted into the groove 411 of the step plate 41 , and the riser 43 is attached to the step plate 41 .
Next, the step plate 41 and the riser plate 43 attached to the step plate 41 are inserted into the inserted portions 31, 31 of the side plates 3, 3 from behind. At this time, the step plate 41 is inserted into the horizontally elongated recesses 311 and 311 and the riser plate 43 is inserted into the vertically elongated recesses 312 and 312 .

The plate receiving members 5,5 are then attached to the wall surfaces 21,21. When mounting each plate receiving member 5, the plate receiving member 5 is moved forward so that the one surface 5a and the lower end surface 5d of the plate receiving member 5 contact the wall surface 21 and the floor surface 22 (see FIG. 4). When the upper end surface 5b and the front end surface 5c of the plate receiving member 5 contact the lower surface of the step plate 41 and the rear surface of the riser plate 43, the plate receiving member 5 is attached to the wall surface 21 (see FIGS. 1 and 2). As a result, the plate receiving member 5 contacts the wall surface 21 through the opening 32 of the side plate 3 .
The plate receiving member 5 is attached to the wall surface 21 by using screws, an adhesive, or the like.
The plate receiving members 5, 5 attached to the wall surfaces 21, 21 as described above receive the step plate 41 from below and the riser plate 43 from the rear side.
Next, the step plate 41 and the riser plate 43 are attached to the side plates 3,3.

After the step plate 41 and the riser plate 43 are attached, the step plate 42 one step above the step plate 41 is inserted from behind into the lateral grooves 33, 33 of the side plates 3, 3, and the lower surface of the step plate 42 and the lateral grooves 33, 33 respectively. A wedge-shaped member is fitted between the side plates 3, 3 and the inclined surfaces of the side plates 3, 3. The riser plate 44 is inserted from below into the longitudinal grooves 34 of the side plates 3 and 3 and the groove 421 of the step plate 42 and attached to the lower surface of the step plate 42 and the rear end surface of the step plate 41 .
Similarly, the step plate 42 one step above the step plate 42 attached to the side plates 3,3 is attached to the side plates 3,3. A riser plate 44 is attached to the lower surface of the step plate 42 and the rear end surface of the step plate 42 one step below the step plate 42 .

In the case of the stairs 1 as described above, the step plate 41 having the riser plate 43 inserted into the groove 411 can be inserted into the inserted portions 31, 31 of the side plates 3, 3 from behind. It is easy to attach the step plate 41 and the riser plate 43 to the
The inserted portion 31 is a recess, not an opening. That is, since part of the side plate 3 exists in the portion where the step plate 41 and the riser plate 43 of the side plate 3 are inserted, the mechanical strength of the side plate 3 is large.
Note that the inserted portion 31 may be an opening. In this case, the inserted portion 31 has a shape in which the laterally elongated recessed portion 311 and the vertically elongated recessed portion 312 are respectively removed and integrated with the opening 32 .

The plate receiving members 5,5 are attached to the wall surfaces 21,21. Since the wall surfaces 21, 21 have a wide range in the front-rear direction to which the plate receiving members 5, 5 can be attached, the plate receiving members 5, 5 can be stably attached to the wall surfaces 21, 21. - 特許庁
Since one surface 5a of the plate receiving member 5 contacts the wall surface 21, the posture of the plate receiving member 5 can be stabilized when the plate receiving member 5 is attached to the wall surface 21. - 特許庁

The plate receiving members 5, 5 stably attached to the wall surfaces 21, 21 contact the lower surface of the step plate 41 and the rear surface of the riser plate 43, thereby stabilizing the lower surface of the step plate 41 and the rear surface of the riser plate 43. can accept it. Further, the downward load applied from the step plate 41 to the plate receiving members 5 , 5 can be received by the floor surface 22 .
The horizontally elongated recessed portion 311 does not protrude below the step plate 41 , and the vertically elongated recessed portion 312 does not protrude further rearward than the riser plate 43 . Also, the plate receiving member 5 contacts the wall surface 21 through the opening 32 . Therefore, the plate receiving member 5, which is a simple rectangular plate, can contact the lower surface of the step plate 41, the rear surface of the riser plate 43, the wall surface 21, and the floor surface 22 without being obstructed by the side plate 3.

Embodiment 2.
The staircase 1 of the present embodiment has substantially the same configuration as the staircase 1 of the first embodiment. The staircase 1 of the present embodiment has substantially the same effects as the staircase 1 of the first embodiment. In the following, the differences from the first embodiment will be explained, and the same reference numerals will be given to the same components as in the first embodiment, and the explanation thereof will be omitted.

FIG. 5 is a side view showing the staircase 1 according to Embodiment 2. FIG.
FIG. 6 is a cross-sectional view of the staircase 1 along line VI-VI in FIG.
The plate receiving member 5 of the first embodiment is a single rectangular plate, but the plate receiving member 5 of the present embodiment includes a riser plate receiver 51 and a stepped plate receiver 52 .

FIG. 7 is a side view showing the side plate 3 and the riser plate support 51 of the plate support member 5 provided in the staircase 1. FIG.
Each riser plate receiver 51 is a rectangular plate (see FIGS. 5 to 7). The riser plate receiver 51 is arranged so that one surface of the riser plate receiver 51 contacts the wall surface 21 and the front end surface 51 a and the lower end surface 51 b (two end surfaces) of the riser plate receiver 51 contact the rear surface of the riser plate 43 and the floor surface 22 . and attached to the wall surface 21. The riser plate receiver 51 is in contact with the wall surface 21 through the opening 32 of the side plate 3 . Below, the one side/the other side of the riser plate receiver 51 are referred to as the outer surface 51c/inner surface 51d of the riser plate receiver 51. As shown in FIG.
The vertical length C3 of the riser plate receiver 51 is shorter than the height C2 from the floor surface 22 to the lower surface of the step plate 41 . Therefore, the upper end surface 51e (other end surface) of the riser plate receiver 51 is separated downward from the lower surface of the step plate 41, and a gap is formed between the upper end surface 51e of the riser plate receiver 51 and the lower surface of the step plate 41. It is The front-to-rear length D3 of the riser plate receiver 51 is equal to or greater than the length D2 from the rear surface of the riser plate 43 to the rear end surface of the step plate 41 (D3=D2 in the drawing).

The step plate receiver 52 includes an attachment portion 521 and an insertion portion 522 .
The mounting portion 521 is an elongated rectangular plate.
The insertion portion 522 is a ridge protruding from one of the two long sides of the attachment portion 521 in a direction intersecting one surface of the attachment portion 521 . The insertion portion 522 extends over the entire length of the attachment portion 521 . In this embodiment, the length of protrusion of the insertion portion 522 from one surface of the mounting portion 521 is approximately half the thickness of the side plate 3 .
The step plate receiver 52 including the mounting portion 521 and the insertion portion 522 as described above has an L-shaped cross section that intersects the longitudinal direction.

The mounting portion 521 is mounted on the inner surface 51 d of the riser plate receiver 51 such that the longitudinal direction of the mounting portion 521 extends along the front-rear direction and the insertion portion 522 protrudes toward the wall surface 21 .
The insertion portion 522 is inserted between the lower surface of the step plate 41 and the upper end surface 51 e of the riser plate receiver 51 so as to contact the upper end surface 51 e of the riser plate receiver 51 and the lower surface of the step plate 41 .
Note that the riser plate receiver 51 is not limited to a rectangular shape. Further, the step plate receiver 52 is not limited to an L-shape, and may be T-shaped, for example, further including a projecting portion projecting from the mounting portion 521 in the direction opposite to the projecting direction of the insertion portion 522 .

Next, a method for assembling the staircase 1 will be described.
First, in the same manner as in the first embodiment, the step plate 41 is inserted into the horizontally elongated recesses 311 and 311, and the riser plate 43 is inserted into the vertically elongated recesses 312 and 312. As shown in FIG.
Next, the riser plate receivers 51,51 are attached to the wall surfaces 21,21. When each of the riser receivers 51 is attached, the riser receivers 51 are moved forward so that the outer surface 51c and the lower end surface 51b of the riser receivers 51 come into contact with the wall surface 21 and the floor surface 22, and the front ends of the riser receivers 51 When the surface 51a contacts the rear surface of the riser 43 of the step plate 41, it is attached to the wall surface 21 (see FIG. 7). As a result, the riser plate receiver 51 comes into contact with the wall surface 21 through the opening 32 of the side plate 3 , and a gap is formed between the upper end surface 51 e of the riser plate receiver 51 and the lower surface of the step plate 41 .
The mounting of the riser plate receiver 51 to the wall surface 21 is performed using screws, an adhesive, or the like.

FIG. 8 is a side view for explaining the mounting of the board support 52 of the board support member 5. As shown in FIG.
After the mounting of the riser plate receivers 51 , 51 , the step plate receiver 52 is attached to each of the riser plate receivers 51 .
Specifically, first, the tip of the insertion portion 522 faces the wall surface 21, the insertion portion 522 contacts the lower surface of the step plate 41, and the mounting portion 521 contacts the inner surface 51d of the riser plate receiver 51. The insertion portion 522 is inserted into the gap between the upper end surface 51 e of the riser plate receiver 51 and the lower surface of the step plate 41 .
Next, the attachment portion 521 is attached to the riser plate receiver 51 . The attachment portion 521 is attached to the riser plate receiver 51 using, for example, screws or nails.

In order for the step plate receiver 52 to stably support the step plate 41 , it is desirable that the insertion portion 522 is in contact with both the upper end surface 51 e of the riser plate receiver 51 and the lower surface of the step plate 41 . However, the insertion portion 522 cannot be brought into contact with both the upper end surface 51e of the riser plate receiver 51 and the lower surface of the step plate 41 due to errors in the size or arrangement of each member, or adverse effects such as unevenness of the floor surface 22. Sometimes. In this case, the mounting portion 521 may be attached to the riser plate receiver 51 while the insertion portion 522 is in contact with the lower surface of the step plate 41 so that the upper surface of the step plate 41 is kept horizontal. The vertical position of the plate support 52 is adjusted when the insertion portion 522 is inserted.

In the case of the stairs 1 as described above, the riser plate receivers 51, 51 are attached to the wall surfaces 21, 21. As shown in FIG. Since the wall surfaces 21, 21 have a wide range in the front-rear direction to which the riser receivers 51, 51 can be attached, the riser receivers 51, 51 can be stably attached to the wall surfaces 21, 21. - 特許庁
The rear surface of the riser plate 43 can be stably received by the riser plate receivers 51, 51 stably attached to the wall surfaces 21, 21 contacting the rear surface of the riser plate 43. - 特許庁
Further, the stepped plate receivers 52, 52 attached to the riser plate receivers 51, 51 contact the lower surface of the stepped plate 41, so that the lower surface of the stepped plate 41 can be received stably.
Further, the downward load applied from the step plate 41 to the step plate receivers 52, 52 can be received by the floor surface 22 through the riser plate receivers 51, 51. - 特許庁

Since the outer surface 51c of the riser receiver 51 contacts the wall surface 21, the posture of the riser receiver 51 can be stabilized when the riser receiver 51 is attached to the wall surface 21. - 特許庁
In the present embodiment, the board receiving member 5 includes one riser board receiver 51, but the configuration is not limited to this. A juxtaposed configuration is also possible.

Embodiment 3.
The staircase 1 of the present embodiment has substantially the same configuration as the staircase 1 of the second embodiment. The staircase 1 of the present embodiment has substantially the same effects as the staircase 1 of the second embodiment. In the following, the differences from the second embodiment will be explained, and the same reference numerals will be given to the same components as in the second embodiment, and the explanation thereof will be omitted.

FIG. 9 is a cross-sectional view of the staircase 1 according to Embodiment 3. FIG.
The plate receiving member 5 of the second embodiment includes a riser plate receiver 51 and a stepped plate receiver 52 , whereas the plate receiving member 5 of the present embodiment includes a riser plate receiver 51 and a stepped plate receiver 53 .
The riser plate receiver 51 may have the same configuration as the plate receiver member 5 of the first embodiment, or the same configuration as the riser plate receiver 51 of the second embodiment. That is, the upper end surface 51e of the riser plate receiver 51 may or may not be in contact with the lower surface of the step plate 41 .

The step plate receiver 53 includes a mounting portion 531 (first mounting portion) and a mounting portion 532 (second mounting portion).
Each of the mounting portions 531 and 532 is a rectangular plate. The mounting portion 532 protrudes from one side of the mounting portion 531 in a direction intersecting one surface of the mounting portion 531 . The attachment portions 531 and 532 are attached to the inner surface 51 d of the riser plate receiver 51 and the lower surface of the step plate 41 . The mounting portion 531 protrudes downward from the mounting portion 532 . The mounting portion 532 protrudes from the mounting portion 531 toward the opposite side of the wall surface 21 to which the riser receiver 51 is mounted.
The step plate receiver 53 having the mounting portions 531 and 532 as described above is, for example, a general L-shaped bracket.

Next, a method for assembling the staircase 1 will be described.
First, the side plates 3,3 are attached to the wall surfaces 21,21.
One long side of the riser 43 is inserted into the groove 411 of the step plate 41 , and the riser 43 is attached to the step plate 41 . Further, mounting portions 532, 532 of the step plate receivers 53, 53 are mounted on both ends of the lower surface of the riser plate 43 in the longitudinal direction.

FIG. 10 is a side view for explaining the mounting of the step plate support 52 of the plate support member 5 provided in the stairs 1. FIG.
The step plate 41 and the riser plate 43 attached to the step plate 41 are inserted into the inserted portions 31, 31 of the side plates 3, 3 from behind. At this time, the step plate 41 is inserted into the horizontally elongated recesses 311 and 311 and the riser plate 43 is inserted into the vertically elongated recesses 312 and 312 .
Next, the riser plate receivers 51, 51 are attached to the wall surfaces 21, 21 in the same manner as in the second embodiment (see FIG. 9).

Next, the attachment portions 531, 531 of the step plate receivers 53, 53 are attached to the outer surfaces 51c, 51c of the riser plate receivers 51, 51, respectively. The vertical mounting position of each mounting portion 531 to the riser plate receiver 51 is adjusted so that the upper surface of the step plate 41 is kept horizontal. Therefore, it is possible to prevent the upper surface of the step plate 41 from inclining due to an error in the size or position of each member or an adverse effect such as unevenness of the floor surface 22 .
The attachment portions 531 and 532 are attached to the riser plate receiver 51 and the step plate 41 using, for example, screws or nails.

Since the step plate receivers 53, 53 are attached to the step plate 41 before the step plate 41 is inserted into the oblong concave portions 311, 311, the staircase 1 can be easily assembled. This is because the operation for attaching the tread plate support 53 to the lower surface of the tread plate 41 in the narrow space between the lowermost tread plate 41 and the floor surface 22 (for example, the work of driving screws upward into the lower surface of the tread plate 41) ) is not required.
After the step plate 41 is inserted into the oblong concave portions 311, 311, the step plate receivers 53 and 53 are attached to the step plate 41.
53 may be attached.

In the case of the stairs 1 as described above, the tread plate receivers 53, 53 can stably receive the lower surface of the tread plate 41. As shown in FIG. Further, the downward load applied from the step plate 41 to the step plate receivers 53, 53 can be received by the floor surface 22 through the riser plate receivers 51, 51. - 特許庁

In Embodiments 2 and 3, the vertical length A2 of the laterally elongated recess 311 may be equal to or greater than the thickness A1 of the step plate 41 as long as the laterally elongated recess 311 does not interfere with the plate receiving member 5 .

Embodiment 4.
The staircase according to this embodiment has a concave portion on one surface, the other surface is in contact with a wall surface, and a part of an end surface is in contact with a floor surface. A staircase comprising: a lowermost tread plate having a groove extending in a direction intersecting the side plate, and a riser plate inserted into the recess and the groove, wherein the rear portion of the recess is open, and is attached to the floor surface so as to be in contact with the step plate support member attached to the lower surface of the step plate and the inner surface of the recess, and the floor surface and the rear surface of the step plate. and a riser support member.

A method for assembling a staircase according to the present embodiment includes a side plate having a concave portion on one surface, a wall surface on the other surface, a floor surface on a part of an end surface, and a side plate attached to the wall surface, and a side plate inserted into the concave portion. and a bottom tread plate having a groove extending in a direction intersecting the side plate on its lower surface; and a riser plate inserted into the recess and the groove, wherein the recess is , the side plate which is open on one side along the one surface and along the part of the end surface, the step plate, the riser plate, and a step plate supporting member for supporting the step plate; and a riser plate support member for supporting the riser plate is prepared, the side plate is attached to the wall surface with the one side facing the rear side, and after the side plate is attached, the step plate is supported on the lower surface. The tread plate having a member attached thereto and the riser plate inserted in the groove is inserted into the recess from the rear, or the step plate support member is attached to the lower surface and the tread plate is inserted into the groove. When the step board without the riser inserted into the groove is inserted into the recess, and the step board without the riser inserted into the groove is inserted into the recess, the riser is tilted forward and the It is inserted into the groove from below and into the recess from the rear. After inserting the step plate, the step plate supporting member is attached to the inner surface of the recess. It is characterized in that it is attached to the floor surface so as to be in contact with the surface and the rear surface of the step board.
A method for assembling a staircase according to the present embodiment includes a side plate having a concave portion on one surface, a wall surface on the other surface, a floor surface on a part of an end surface, and a side plate attached to the wall surface, and a side plate inserted into the concave portion. and a bottom tread plate having a groove extending in a direction intersecting the side plate on its lower surface; and a riser plate inserted into the recess and the groove, wherein the recess is , the side plate which is open on one side along the one surface and along the part of the end surface, the step plate, the riser plate, and a step plate supporting member for supporting the step plate; and a riser plate support member for supporting the riser plate is prepared, the side plate is attached to the wall surface with the one side facing the rear side, and after the side plate is attached, the step plate is supported on the lower surface. The tread plate having a member attached thereto and the riser plate inserted in the groove is inserted into the recess from the rear, or the step plate support member is attached to the lower surface and the tread plate is inserted into the groove. When the tread without the riser inserted into the groove is inserted into the recess, and the tread with the riser inserted into the groove is inserted into the recess, the tread support member is inserted into the recess. The riser support member is attached to the floor surface so as to be in contact with the floor surface and the rear surface of the riser plate, and the step plate without the riser plate inserted into the groove is inserted into the recess. In this case, the step plate support member is attached to the inner surface of the recess, the rise plate is tilted forward and inserted into the groove from below and into the recess from the rear, and the rise plate support member is attached to the floor and the floor surface. The riser is attached to the floor so as to come into contact with the rear surface of the riser.

In this embodiment, a concave portion is provided on one surface of the side plate. Since the rear portion of the recess is open, the step plate with the riser inserted into the groove can be inserted into the recess from behind. Alternatively, the treads can be inserted into the recesses from behind first, and the risers can be inserted into the grooves of the treads from below and into the recesses from behind. In other words, it is easy to attach the treads and risers to the side plates, and the degree of freedom in assembling the stairs is high.

A tread support member is attached to the inner surface of the recess. In the vicinity of the lower surface of the tread on the inner surface of the recess, compared to the vicinity of the floor surface, the tread support member can be attached to a wider range in the front-rear direction, so the tread support member can be stably attached to the inner surface of the recess. can be installed.
The riser support member is attached to the floor. Since the floor surface has a wide range to which the riser support member can be attached, the riser support member can be stably attached to the floor surface.
The tread support member stably attached to the inner surface of the recess contacts the lower surface of the tread, and the riser support member stably attached to the floor surface contacts the rear surface of the tread. It can stably receive the lower surface of the riser and the rear surface of the riser. In addition, the downward load applied from the treads to the tread support member can be received by the floor surface.

The staircase 1 of the present embodiment has substantially the same configuration as the staircase 1 of the first embodiment. The staircase 1 of the present embodiment has substantially the same effects as the staircase 1 of the first embodiment. In the following, the differences from the first embodiment will be explained, and the same reference numerals will be given to the same components as in the first embodiment, and the explanation thereof will be omitted.

FIG. 11 is a side view showing the staircase 1 according to Embodiment 4. FIG.
FIG. 12 is a sectional view of the staircase 1 along line XII-XII in FIG.
A concave portion 35 is provided on the inner surface 3b of the side plate 3 of this embodiment, and the inserted portion 31 and the opening 32 are not provided.
The recess 35 extends over the end surface 3d and the lower end surface 3f of the side plate 3. As shown in FIG. The rear portion of the recess 35 is open, and the bottom end of the recess 35 is closed by the floor surface 22 . The configuration of the recess 35 is such that the bottom surface of the oblong recess 311 extends to the floor surface 22 in the direction along the end surface 3d of the side plate 3 in the inserted portion 31 of the first embodiment.
The staircase 1 of the present embodiment includes two tread support members 61 and 61 and a riser support member 62 and does not include the plate receiving members 5 and 5 .

Each step plate support member 61 has mounting portions 611 and 612 .
The configuration of the attachment portions 611 and 612 of the step plate support member 61 is substantially the same as the configuration of the attachment portions 531 and 532 of the step plate receiver 53 of the third embodiment. However, although the mounting portion 531 of Embodiment 3 is mounted on the inner surface 51d of the riser plate receiver 51, the mounting portion 611 is mounted on the bottom surface of the recess 35 (the deepest surface of the recess 35 in the depth direction). , the mounting portion 612 protrudes from the mounting portion 611 toward the opposite side of the bottom surface of the recess 35 .

The riser support member 62 is a square member. The riser support member 62 is attached to the floor surface 22 such that one side surface of the riser support member 62 contacts the floor surface 22 and the other side surface of the riser support member 62 contacts the rear surface of the riser plate 43 . ing.

Next, a method for assembling the staircase 1 will be described.
First, the side plates 3,3 are attached to the wall surfaces 21,21.
One long side of the riser 43 is inserted into the groove 411 of the step plate 41 , and the riser 43 is attached to the step plate 41 . Further, mounting portions 612, 612 of the step plate support members 61, 61 are attached to both ends of the lower surface of the step plate 41 in the longitudinal direction.

FIG. 13 is a side view for explaining how the lowermost tread 41 and the riser 43 of the staircase 1 are attached.
The step plate 41 and the riser plate 43 attached to the step plate 41 are inserted into the recesses 35, 35 of the side plates 3, 3 from behind.

Next, the attachment portions 611, 611 of the step plate support members 61, 61 are attached to the inner surfaces of the recesses 35, 35. As shown in FIG. The vertical mounting position of each mounting portion 611 on the inner surface of the recess 35 is adjusted so that the upper surface of the step plate 41 is kept horizontal. Therefore, it is possible to prevent the upper surface of the step plate 41 from inclining due to an error in the size or position of each member or an adverse effect such as unevenness of the floor surface 22 .
The mounting portions 611 and 612 are attached to the inner surface of the recess 35 and the lower surface of the step plate 41 using, for example, screws or nails.

Since the step plate supporting members 61, 61 are attached to the step plate 41 before the step plate 41 is inserted into the recesses 35, 35, the staircase 1 can be easily assembled.
After the step plate 41 is inserted into the concave portions 35, 35, the step plate supporting members 61, 61 are attached to the step plate 41.
may be attached.

After attaching the tread support members 61, 61, one side of the riser support member 62 is in contact with the floor surface 22, and the other side of the riser support member 62 is in contact with the rear surface of the riser 43. A support member 62 is attached to the floor surface 22 (see FIGS. 11 and 12). The riser support member 62 is attached to the floor surface 22 using, for example, screws or an adhesive.

In the case of the stairs 1 as described above, the step plate support members 61, 61 attached to the concave portions 35, 35 contact the lower surface of the step plate 41, thereby stably supporting the lower surface of the step plate 41. .
Further, the downward load applied from the step plate 41 to the step plate supporting members 61, 61 can be received by the floor surface 22 through the concave portions 35, 35. As shown in FIG.

The design conditions such as the shape, dimensions, and mechanical properties of the riser support member 62 are less restricted than the design conditions of the tread support member 61. may be used. In the present embodiment, the staircase 1 includes a single riser support member 62. However, the present invention is not limited to this. A juxtaposed configuration is also possible.

Next, another method of assembling the staircase 1 will be described.
FIG. 14 is a side view for explaining attachment of the lowermost tread plate 41 of the staircase 1. FIG. FIG. 15 is a side view for explaining the attachment of the lowermost riser 43 of the stairs 1. FIG.
First, the side plates 3,3 are attached to the wall surfaces 21,21.
Further, mounting portions 612, 612 of the step plate support members 61, 61 are attached to both ends of the lower surface of the step plate 41 in the longitudinal direction.

Next, the step plate 41 is inserted into the recesses 35, 35 from behind (see FIG. 14). Next, the attachment portions 611, 611 of the step plate support members 61, 61 are attached to the inner surfaces of the recesses 35, 35 of the side plates 3, 3. As shown in FIG.
Next, the riser plate 43 is inserted into the groove 411 of the step plate 41 from below and into the concave portions 35, 35 of the side plates 3, 3 from behind (see FIG. 15).
The riser support member 62 is then attached to the floor surface 22 (see FIG. 11).

By the way, in Embodiments 1 to 3, the case where the step plate 41 and the riser plate 43 are simultaneously inserted into the inserted portions 31, 31 of the side plates 3, 3 is exemplified, but it is not limited to this. do not have.
For example, in the case of the stairs 1 of Embodiments 1 and 2, first, the step plate 41 is inserted from behind into the oblong concave portions 311 and 311 of the side plates 3 and 3 and temporarily fixed to the side plates 3 and 3 . Next, the riser plate 43 is inserted into the groove 411 of the step plate 41 from below and into the vertically long concave portions 312, 312 of the side plates 3, 3 from behind. Next, the plate receiving members 5, 5 are attached.

Further, in the case of the staircase 1 of Embodiment 3, the step plate 41 to which the mounting portions 532, 532 of the step plate receivers 53, 53 are attached is inserted from the rear into the oblong concave portions 311, 311 of the side plates 3, 3 to 3,3 is temporarily fixed. Next, the riser plate 43 is inserted into the groove 411 of the step plate 41 from below and into the vertically long concave portions 312, 312 of the side plates 3, 3 from behind. Then, the riser plate receivers 51,51 are attached to the wall surfaces 21,21. Next, the attachment portions 531, 531 of the step plate receivers 53, 53 are attached to the inner surfaces 51d of the riser plate receivers 51, 51, respectively.
As described above, the staircase 1 of Embodiments 1 to 4 has a high degree of freedom in assembly.

The side plate 3 of the first embodiment may have the same configuration as the side plate 3 of the fourth embodiment. In this case, the plate receiving member 5 of Embodiment 1 includes a first portion that contacts the inner surface of the recess 35, the lower surface of the step plate 41, the rear surface of the riser plate 43, and the floor surface 22, and a portion that is continuous with the first portion. and a second portion attached to the wall surface 21 so as to contact the wall surface 21 at least. The shape of such a plate receiving member 5 is more complicated than that of the rectangular plate-like plate receiving member 5 .
Similarly, the side plate 3 of Embodiments 2 and 3 may have the same configuration as the side plate 3 of Embodiment 4. In this case, the riser plate receiver 51 of Embodiments 2 and 3 has a first portion that contacts the inner surface of the recess 35, the rear surface of the riser plate 43, and the floor surface 22 and faces the lower surface of the step plate 41, and a second portion that is continuous with the first portion and attached to the wall surface 21 so as to be in contact with the wall surface 21 at least.

The embodiments disclosed this time should be considered as examples in all respects and not as restrictive. The scope of the present invention is intended to include all modifications within the scope of the claims and the meaning equivalent to the scope of the claims, rather than the meaning described above.
The constituent elements (technical features) disclosed in each embodiment can be combined with each other, and the combination can form new technical features.

21 wall surface 22 floor surface 3 side plate 31 inserted portion 311 horizontally elongated recess 312 vertically elongated recess 32 opening 41 step plate 411 groove 43 riser plate 5 plate receiving member 51 riser plate receiver 52, 53 step plate receiver 521 mounting portion 522 insertion portion 531 mounting portion (First attachment part)
532 mounting portion (second mounting portion)

Claims (2)

a side plate having a concave portion on one surface, the other surface in contact with a wall surface, and a part of an end surface in contact with a floor surface, and attached to the wall surface;
a lowermost stepped plate which is inserted into the recess and has a groove extending in a direction intersecting the side plate on its lower surface;
a riser inserted into the recess and the groove;
in a staircase comprising
A rear portion of the recess is open,
a step plate supporting member attached to the lower surface of the step plate and the inner surface of the recess;
a riser supporting member attached to the floor so as to be in contact with the floor and the rear surface of the riser;
A staircase comprising: a side plate having a concave portion on one surface, the other surface in contact with a wall surface, and a part of an end surface in contact with a floor surface, and attached to the wall surface;
a lowermost stepped plate that is inserted into the recess and has a groove extending in a direction that intersects the side plate on its lower surface;
a riser inserted into said recess and said groove, and a method of assembling a staircase comprising:
The side plate in which the concave portion is open on one side along the one surface and along the part of the end face, the step plate, the riser plate, and a step plate for supporting the step plate. preparing a support member and a riser support member for supporting the riser;
Attaching the side plate to the wall surface so that the one side is on the rear side,
After the side plate is attached, the step plate having the step plate support member attached to the lower surface and the riser plate inserted into the groove is inserted into the recess from the rear, or the step plate is inserted into the lower surface. inserting the step plate having the step plate support member attached thereto and the step plate not having the riser plate inserted into the groove into the recess;
When the step plate having the riser plate inserted in the groove is inserted into the recess,
attaching the step plate support member to the inner surface of the recess;
attaching the riser plate support member to the floor surface so as to be in contact with the floor surface and the rear surface of the riser plate;
When the tread without the riser inserted in the groove is inserted into the recess,
attaching the step plate support member to the inner surface of the recess;
The riser is tilted forward and inserted into the groove from below and into the recess from the rear , and the support member for the riser is placed on the floor so as to contact the floor surface and the rear surface of the riser. A method for assembling a staircase, characterized by attaching.

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