JP7051464B2 - How to assemble stairs and stairs - Google Patents

Description

The present invention relates to a staircase device that folds back in a U shape and a method for assembling the staircase device.

Patent Document 1 describes a staircase device that folds back in a U shape around a pillar. The staircase device described in Patent Document 1 includes a straight staircase on the lower floor side, a straight staircase on the upper floor side, and a circular staircase connecting the straight staircase on the lower floor side and the straight staircase on the upper floor side. .. This round staircase includes a plurality of stairs with different directions of the nose and side plates attached to the pillars. A part of the peripheral edge of each step plate is inserted into a notch provided in the side plate.

Japanese Unexamined Patent Publication No. 9-279977

Some of the multiple stairs provided by the stairs are arranged at the corners of the pillars. The shape of the step plate for the corner is more complicated than the shape of the other step plates. Therefore, when the step plate for the corner is attached to the side plate after attaching the side plate to the pillar, the side plate may interfere with the step plate and the step plate may not be attached to the side plate.

At the assembly site of the staircase device, when the side plate interferes with the step plate, the portion of the side plate that interferes with the step plate is manually cut. It is not easy to assemble the stairs device because it requires skill to cut the side plates so that the strength and aesthetics of the stairs are not adversely affected.
The above problems can also occur in the staircase device that folds back in a U shape along both sides and end faces of the wall body.

The present invention has been made in view of such circumstances, and a main object thereof is to provide a staircase device and a method for assembling a staircase device that can be easily assembled.

The staircase device according to the present embodiment is a staircase device that folds back in a U shape along both sides and end faces of the wall body, and is used on a straight staircase on the lower floor side along one side of the wall body and another surface of the wall body. A straight staircase on the upper floor side along the staircase and a circular staircase connecting the straight staircase on the lower floor side and the straight staircase on the upper floor side are provided. A first step plate arranged at a corner portion with the one surface, a second step plate arranged at a corner portion between the end surface of the wall body and the other surface of the wall body, and the first step plate. A third step plate adjacent to the upper floor side of the first step plate, a fourth step plate adjacent to the upper floor side of the third step plate and the lower floor side of the second step plate, and the above. A lower plate having a notch or an insertion groove into which a part of the peripheral edge of each of the first step plate and the third step plate is inserted, and the lower plate attached to the end face of the wall body, and the said It is provided with a notch or an insertion groove into which a part of the peripheral edge of the second step plate and the fourth step plate is inserted, and has an upper plate attached to the end face of the wall body. It is characterized by that.
The staircase device according to the present embodiment is a staircase device that folds back in a U shape along both sides and end faces of the wall body, and is used on a straight staircase on the lower floor side along one side of the wall body and another surface of the wall body. A straight staircase on the upper floor side along the staircase and a circular staircase connecting the straight staircase on the lower floor side and the straight staircase on the upper floor side are provided. A first step plate arranged at a corner portion with the one surface, a second step plate arranged at a corner portion between the end surface of the wall body and the other surface of the wall body, and the first step plate. A third step plate adjacent to the upper floor side of the first step plate, a fourth step plate adjacent to the upper floor side of the third step plate and the lower floor side of the second step plate, and the above. It has a lower plate attached to the end surface of the wall body and an upper plate attached to the end surface of the wall body, and the lower plate is inserted with a part of the peripheral edge of the first step plate. A notch provided on the peripheral edge of the lower plate so that the side of the wall body close to the one surface is opened, and a part of the peripheral edge of the third step plate are inserted. The lower plate is provided on one surface so as to extend laterally along one surface of the lower plate, and has an insertion groove in which an end portion of the wall body on the side close to the other surface is open. The other surface is attached to the end surface of the wall body so as to be in contact with the end surface of the wall body, and a part of the peripheral edge of the second step plate is inserted into the upper plate. A notch provided on the peripheral edge of the upper plate so that the side of the wall body close to the other surface is opened, and a part of the peripheral edge of the fourth step plate are inserted, and the upper plate is inserted. It is provided on one surface so as to extend laterally along one surface, has an insertion groove in which an end portion of the wall body on the side close to the other surface is open, and is provided on the lower plate from above. The upper plate is attached to the end surface of the wall so that the other surface of the upper plate is in contact with the end surface of the wall, and the staircase is attached to the other surface of the wall. It has a mounting table on which the second step plate is mounted, and the mounting table and the upper plate are in contact with each other in the vertical direction on the lower side of the second step plate. The straight staircase on the lower floor side includes a side plate attached to the one side of the wall body so that one side contacts the one side of the wall body, and the side plate is the first side plate. Another part of the peripheral edge of the step plate is inserted, and is provided on the other surface so as to extend laterally along the other surface of the side plate, and the end of the wall body on the side close to the end surface. The part is opened
It is characterized by having an insertion groove.

In the staircase device according to the present embodiment, the lower plate is inserted so that a part of the peripheral edge of the first step plate is inserted and the side of the wall body close to one surface is opened. A notch provided on the peripheral edge of the plate and a part of the peripheral edge of the third step plate are inserted, and are provided on the one surface so as to extend laterally along one surface of the lower plate. The end surface of the wall body has an insertion groove in which the end portion on the side close to the other surface of the wall body is open so that the other surface of the lower plate is in contact with the end surface of the wall body. The upper plate is attached to the peripheral edge of the upper plate so that a part of the peripheral edge of the second step plate is inserted and the side of the wall body close to the other surface is opened. A notch provided and a part of the peripheral edge of the fourth step plate are inserted, and the wall body is provided on one surface so as to extend laterally along one surface of the upper plate. It has an insertion groove in which the end portion on the side close to the other surface of the wall is open, and the lower plate is in contact with the lower plate from above so that the other surface of the upper plate is in contact with the end surface of the wall body. It is characterized in that it is attached to the end face of the wall body.

In the staircase device according to the present embodiment, the staircase around the staircase is attached to the other surface of the wall body, and has a mounting table on which the second step plate is mounted, and the mounting table and the staircase. Each of the upper plates has a contact portion that is in vertical contact with each other on the lower side of the second step plate, and one surface of the straight staircase on the lower floor side is in contact with the one surface of the wall body. The side plate is provided with a side plate attached to the one surface of the wall body in this manner, and the other part of the peripheral edge of the first step plate is inserted into the side plate in the lateral direction along the other surface of the side plate. It is provided on the other surface so as to extend to the other surface, and is characterized by having an insertion groove in which the end portion of the wall body on the side close to the end surface is open.

In the staircase device according to the present embodiment, the circular staircase has a fifth stepped plate adjacent to the lower floor side of the first stepped plate and a sixth stepped plate adjacent to the upper floor side of the second stepped plate. And the lower auxiliary side plate attached to the one side of the wall body so that one surface is in contact with the one side of the wall body, and one side is in contact with the other surface of the wall body. It has an upper auxiliary side plate attached to the other surface of the wall body, and the upper auxiliary side plate and the upper side plate are in vertical contact with each other on the lower side of the second step plate. The lower auxiliary side plate and the lower side plate each have a contact portion which is in vertical contact with each other on the lower side of the first step plate, and the lower auxiliary side plate is the first step plate. The other part of the peripheral edge of the step plate 1 is inserted, and has a notch provided on the peripheral edge of the lower auxiliary side plate so that the side of the wall body close to the end face is opened. The upper auxiliary side plate is provided on the peripheral edge of the upper auxiliary side plate so that another part of the peripheral edge of the second step plate is inserted and the side of the wall body close to the end face is opened. A notch and a part of the peripheral edge of the sixth step plate are inserted, and are provided on the other surface so as to extend laterally along the other surface of the upper auxiliary side plate, and are provided on the other surface of the wall body. The straight staircase on the lower floor side has an insertion groove in which the end portion on the side far from the end surface is open, and the straight staircase on the lower floor side is formed on the one surface of the wall body so that one surface is in contact with the one surface of the wall body. The side plate is provided with a side plate to which a part of the peripheral edge of the fifth step plate is inserted, and the side plate is provided on the other surface so as to extend laterally along the other surface of the side plate. It is characterized in that it has an insertion groove in which an end portion of the wall body on the side close to the end surface is open, and is in contact with the lower auxiliary side plate from the lower side.

In the staircase device according to the present embodiment, a recess is provided on one surface of the upper plate, and at least a portion of the one surface excluding the inner surface of the recess is decorated, and each penetrates the inner surface of the recess. The upper plate is fixed to the wall body by the plurality of fixing members, and the plate-shaped decorative member having a decorated surface has the decorated surface with the one surface of the upper plate. It is characterized in that it covers the inner surface of the recess so as to be one.

In the staircase device according to the present embodiment, the upper plate is long in the vertical direction, one surface of the upper plate is decorated, and a convex portion protruding upward is provided on the upper end surface of the upper plate. The upper plate is fixed to the wall body by a plurality of fixing members, each of which penetrates the convex portion, and the plate-shaped decorative member having a decorated surface and a concave portion is decorated. It is characterized in that one surface thereof is flush with the one surface of the upper plate, and the convex portion is accommodated in the concave portion to cover the convex portion and the upper end surface.

The staircase device according to the present embodiment is characterized in that the lower plate and the upper plate each have a flush end surface on one surface of the wall body or the other surface of the wall body.

The side plate according to the present embodiment connects a straight staircase on the lower floor side along one side of the wall body and a straight staircase on the upper floor side along the other side of the wall body, and is provided with four or more step plates. In the side plates attached to the end faces of the wall body to form a staircase, among the four or more step boards, the side plates are arranged at the corners of the end face of the wall body and the one surface of the wall body. A notch or an insertion groove into which a part of the peripheral edge of the one step plate is inserted, and another step of the four or more step plates adjacent to the upper floor side of the one step plate. It is characterized by having a notch or an insertion groove into which a part of the peripheral edge of the plate is inserted.

The side plate according to the present embodiment connects a straight staircase on the lower floor side along one side of the wall body and a straight staircase on the upper floor side along the other side of the wall body, and is provided with four or more step plates. In the side plate attached to the end face of the wall body for forming a staircase, among the step plates of the four or more step plates, at the corner portion between the end face of the wall body and the other surface of the wall body. A notch or an insertion groove into which a part of the peripheral edge of the one step plate to be arranged is inserted, and another of the four or more step plates adjacent to the lower floor side of the one step plate. It is characterized by having a notch or an insertion groove into which a part of the peripheral edge of the step plate is inserted.

The side plate according to the present embodiment is attached to a wall body to form a rotating staircase, has a decorative decorative surface on a side plate that is long in one direction, and protrudes in the longitudinal direction on one end surface in the longitudinal direction. A plate-shaped decorative member having a decorative one surface and a concave portion is provided, and the decorative one surface is flush with the decorative surface, and the convex portion is housed in the concave portion. It is characterized in that it covers the convex portion and the one end surface in this way.

The side plate according to the present embodiment is characterized in that the recess is open over the other surface of the decorative member and the end surface facing the one end surface.

The side plate according to the present embodiment is characterized in that the length of the convex portion in the thickness direction is shorter than the length of the concave portion in the thickness direction.

The side plate according to the present embodiment is characterized in that the length of the convex portion in the lateral direction is shorter than the opening length of the concave portion in the lateral direction.

The side plate according to the present embodiment is characterized in that both ends in the lateral direction on the other surface of the decorative member are decorated.

The side plate according to the present embodiment is characterized in that the one end surface and the end surface of the decorative member are flat.

In the side plate according to the present embodiment, the length of the convex portion in the thickness direction is shorter than the length of the concave portion in the thickness direction, and the length of the convex portion in the lateral direction is the length of the concave portion in the lateral direction. Both ends of the decorative member on the other side in the lateral direction, which are shorter than the opening length of the decorative member, are decorated by attaching a decorative plate thinner than the decorative member, and the one end surface and the decorative member are decorated. Each of the end faces is flat, and is characterized in that concave R surfaces are provided in the short direction at both ends of the base of the convex portion in the short direction.

The method of assembling the staircase device according to the present embodiment is as follows: a straight staircase on the lower floor side along one side of the wall body, a straight staircase on the upper floor side along the other side of the wall body, and a straight staircase on the lower floor side. In a method of assembling a staircase device that is provided with a circular staircase connecting the staircase on the upper floor side and a staircase device that folds back in a U shape along the one side, the other side, and the end face of the wall body, four steps are provided. A plate and a lower plate and an upper plate each provided with two notches or insertion grooves are prepared, and the first step plate among the four step plates is used as the end face of the wall body and the above. A part of the peripheral edge of the first step plate is inserted into one of the two notches or insertion grooves of the lower plate after the arrangement of the first step plate by arranging the wall body at the corner with the one surface. The lower plate is attached to the end surface of the wall body, and the second step plate of the four step plates is attached to the end surface of the wall body and the other surface of the wall body. After the arrangement of the second step plate, a part of the peripheral edge of the second step plate is inserted into one of the two notches or the insertion grooves of the upper plate. The upper plate is attached to the end surface of the wall body, and after the lower plate is attached, a part of the peripheral edge of the third step plate among the four step plates is formed by two notches or two cutouts of the lower plate. After inserting into the other side of the insertion groove and attaching the upper plate, a part of the peripheral edge of the fourth step plate among the four step plates is inserted into the other of the two notches or the insertion groove of the upper plate. It is characterized by being inserted.
The method of assembling the staircase device according to the present embodiment is as follows: a straight staircase on the lower floor side along one side of the wall body, a straight staircase on the upper floor side along the other side of the wall body, and a straight staircase on the lower floor side. In a method of assembling a staircase device that is provided with a circular staircase connecting the upper floor side and the straight staircase on the upper floor side and is folded back in a U shape along the one side, the other side, and the end face of the wall body, four steps are provided. A plate and a lower plate and an upper plate each having a notch and an insertion groove are prepared, and the first step plate among the four step plates is used as the end face of the wall body and the wall. The lower part of the body is arranged at a corner with the one side, and after the first step plate is arranged, a part of the peripheral edge of the first step plate is inserted into the notch of the lower plate. The side plate is attached to the end surface of the wall body, and the second step plate of the four step plates is arranged at the corners of the end surface of the wall body and the other surface of the wall body. After the arrangement of the second step plate, the upper plate is attached to the end surface of the wall body so that a part of the peripheral edge of the second step plate is inserted into the notch of the upper plate, and the lower side thereof is attached. After attaching the side plates, a part of the peripheral edge of the third step plate among the four step plates is inserted into the insertion groove of the lower plate, and after the upper plate is attached, the four step plates A part of the peripheral edge of the fourth step plate is inserted into the insertion groove of the upper plate, and the lower plate is formed so that one side in one direction along one surface of the lower plate is opened. The notch provided on the peripheral edge of the side plate and the insertion groove provided on the one surface of the lower plate so as to extend in one direction and the other end in the one direction is open. The upper plate has a notch provided on the peripheral edge of the upper plate so that one side in one direction along one surface of the upper plate is opened, and the upper plate extends in one direction. When the lower plate is attached to the end surface of the wall body, the lower plate is provided on the one surface of the upper plate and has the insertion groove in which one end of the one direction is open. The other surface of the lower plate is brought into contact with the end surface of the wall body, and a part of the peripheral edge of the first step plate is inserted into the notch of the lower plate from the side close to the one surface of the wall body. When the lower plate is attached to the end surface of the wall body and the upper plate is attached to the end surface of the wall body, the other surface of the upper plate is brought into contact with the end surface of the wall body and the upper plate is attached. The upper plate is attached to the end surface of the wall body so that a part of the peripheral edge of the second step plate is inserted into the notch of the wall body from the side close to the other surface of the wall body. When the side plate or the upper plate is attached, the upper plate and the lower plate are brought into contact with each other in the vertical direction, and after the lower plate is attached, the peripheral edge of the third step plate among the four step plates is attached. Is inserted into the insertion groove of the lower plate from the side close to the other surface of the wall body, and after the upper plate is attached, the peripheral edge of the fourth step plate among the four step plates is attached. A part of the above
It is inserted into the insertion groove of the side plate from the side close to the other surface of the wall body to prepare a mounting table and a side plate constituting the straight staircase on the lower floor side, and the side plate is along one surface of the side plate. It is provided on one surface so as to extend in the direction, has an insertion groove in which one end is open, and the above-mentioned pedestal and the upper plate each have a protrusion, and when the upper plate is attached, the upper plate is attached. The upper plate is attached to the end surface of the wall body so that the projecting portion of the upper plate projects laterally along the end surface of the wall body beyond the other surface of the wall body. After the arrangement of the step plates, the second step plate is placed on the pre-described pedestal, and the protruding portion of the pre-described pedestal is laterally along the other surface of the wall body. The pre-described pedestal is attached to the other surface of the wall body so as to project beyond the end face of the body, and when the pre-described pedestal or the upper plate is attached, the protrusions of the pre-described pedestal and the upper plate are respectively. In contact with each other in the vertical direction on the lower side of the second step plate, and after the arrangement of the first step plate, the other surface of the side plate is brought into contact with the one surface of the wall body, and the first step The side plate is attached to the one side of the wall body so that another part of the peripheral edge of the plate is inserted into the insertion groove of the side plate from the open end of the insertion groove. ..

In the method of assembling the staircase device according to the present embodiment, the lower plate has a notch provided on the peripheral edge of the lower plate so that one side in one direction along one surface of the lower plate is opened. The lower plate is provided on one surface of the lower plate so as to extend in one direction, and has an insertion groove in which the other end in the one direction is open, and the upper plate is of the upper plate. A notch provided on the peripheral edge of the upper plate so that one side in one direction along one surface is opened, and a notch provided on the one surface of the upper plate so as to extend in the one direction. When the lower plate has an insertion groove in which one end in one direction is open and the lower plate is attached to the end surface of the wall body, the other surface of the lower plate is brought into contact with the end surface of the wall body. The lower plate is attached to the end surface of the wall body so that a part of the peripheral edge of the first step plate is inserted into the notch of the lower plate from the side close to the one surface of the wall body. When the upper plate is attached to the end surface of the wall body, the other surface of the upper plate is brought into contact with the end surface of the wall body, and one of the peripheral edges of the second step plate is made into the notch of the upper plate. The upper plate is attached to the end surface of the wall body so that the portion is inserted from the side close to the other surface of the wall body, and when the lower plate or the upper plate is attached, the upper plate and the lower plate are attached. The side plates are brought into contact with each other in the vertical direction, and after the lower plate is attached, a part of the peripheral edge of the third step plate among the four step plates is inserted into the insertion groove of the lower plate to form the wall. The wall is inserted from the side close to the other surface of the body, and after the upper plate is attached, a part of the peripheral edge of the fourth step plate among the four step plates is inserted into the insertion groove of the upper plate. It is characterized by being inserted from the side close to the other surface of the body.

In the method of assembling the staircase device according to the present embodiment, a mounting table and a side plate constituting the straight staircase on the lower floor side are prepared, and the side plate extends in a direction along one surface of the side plate. The above-mentioned pedestal and the upper plate each have a protrusion, which is provided on one surface and has an insertion groove in which one end is open, and the protrusion of the upper plate is formed when the upper plate is attached. The upper plate is attached to the end surface of the wall body so that the portion projects laterally along the end surface of the wall body beyond the other surface of the wall body, and after the arrangement of the second step plate, the upper plate is attached. The second step plate is placed on the above-mentioned pedestal, and the protrusion of the above-mentioned pedestal extends laterally along the other surface of the wall body over the end surface of the wall body. The pre-described pedestal is attached to the other surface of the wall body so as to project, and when the pre-described pedestal or the upper plate is attached, the protrusions of the pre-described pedestal and the upper plate are the second step plates. After the first step plate is placed in contact with each other in the vertical direction on the lower side, the other surface of the side plate is brought into contact with the one surface of the wall body, and the other one of the peripheral edges of the first step plate is brought into contact with each other. The side plate is attached to the one surface of the wall body so that the portion is inserted into the insertion groove of the side plate from the open end portion of the insertion groove.

In the method of assembling the staircase device according to the present embodiment, two further step plates, a lower auxiliary side plate, an upper auxiliary side plate, and a side plate constituting the straight staircase on the lower floor side are prepared, and the side plate is used. , Which is provided on one surface of the side plate so as to extend along one surface, has an insertion groove in which one end is open, and the open end of the insertion groove in the side plate is open. The side plate is attached to the one surface of the wall body so as to face the end surface side of the wall body and the other surface of the side plate is in contact with the one surface of the wall body. A part of the peripheral edge of the fifth step plate is inserted into the insertion groove of the lower auxiliary side plate, and the lower auxiliary side plate is opened so that one side in one direction along one surface of the lower auxiliary side plate is opened. The upper auxiliary side plate is provided on the one surface so as to extend in one direction along one surface of the upper auxiliary side plate, and has one end portion in the one direction. The lower auxiliary side plate, the lower side plate, the said Each of the upper auxiliary side plate and the upper plate has a protruding portion, and when the lower plate is attached, the protruding portion of the lower plate crosses the one surface of the wall body in the lateral direction along the end surface of the wall body. The lower plate is attached to the end surface of the wall body so as to project, and after the arrangement of the first step plate, the other surface of the lower auxiliary side plate comes into contact with the one surface of the wall body, and the lower auxiliary side plate The protruding portion of the wall body protrudes laterally along the one surface of the wall body over the end surface of the wall body, and the notch of the lower auxiliary side plate is provided with another part of the peripheral edge of the first step plate. The lower auxiliary side plate is attached to the one surface of the wall body so as to be inserted from the side close to the end surface of the wall body, and when the lower auxiliary side plate or the lower side plate is attached, the lower auxiliary side plate and the lower side plate are attached. The protrusions of the side plates are brought into vertical contact with each other on the lower side of the first step plate, and when the upper plate is attached, the protrusions of the upper plate are laterally along the end surface of the wall body. The upper plate is attached to the end surface of the wall body so as to project beyond the other surface of the wall body, and after the arrangement of the second step plate, the other surface of the upper auxiliary side plate is the wall body. In contact with the other surface, the protruding portion of the upper auxiliary side plate projects laterally along the other surface of the wall body over the end surface of the wall body, and the first portion is formed in the notch of the upper auxiliary side plate. The other part of the peripheral edge of the step plate 2 is inserted from the side of the wall body close to the end face. The upper auxiliary side plate is attached to the other surface of the wall body so as to be inserted, and when the upper auxiliary side plate or the upper side plate is attached, the protrusions of the upper auxiliary side plate and the upper side plate are attached to the first portion. The lower side of the second step plate is brought into contact with each other in the vertical direction, and after the upper auxiliary side plate is attached, a part of the peripheral edge of the sixth step plate is placed in the insertion groove of the upper auxiliary side plate at the end face of the wall body. It is characterized by inserting from the side far from.

In the method of assembling the staircase device according to the present embodiment, a recess is provided on one surface of the upper plate, and at least a portion of the one surface excluding the inner surface of the recess is decorated and has a decorated surface. When a plate-shaped decorative member is prepared and the upper plate is attached to the end surface of the wall body, the plurality of fixing members each penetrate the inner surface of the recess, and the plurality of fixing members are used. The upper plate is fixed to the wall body, and after the upper plate is fixed, the decorated surface of the decorative member is made flush with the one surface of the upper plate, and the decorative member is used to cover the recess. It is characterized by covering the inner surface.

In the method of assembling the staircase device according to the present embodiment, the upper plate is long in one direction, one surface of the upper plate is decorated, and the upper plate protrudes in the longitudinal direction on one end surface in the longitudinal direction. When a plate-shaped decorative member having a decorated one surface and a concave portion is prepared and the upper plate is attached to the end surface of the wall body, the convex portion projects upward. The upper plate was fixed to the wall body by the plurality of fixing members so that the plurality of fixing members each penetrated the convex portion, and after the upper plate was fixed, the decorative member was decorated. One surface is flush with the one surface of the upper plate, and the convex portion is accommodated in the concave portion, and the convex portion and the upper end surface of the upper plate are covered with the decorative member.

In the method of assembling the staircase device according to the present embodiment, the lower plate and the upper plate each have an end surface for positioning, and when the lower plate and the upper plate are attached to the end surface of the wall body, the lower plate and the upper plate are attached to the end surface. The lower plate and the upper plate are attached to the end surface of the wall body so that the end surface for positioning is flush with the other surface of the wall body or the one surface of the wall body. do.

In the present embodiment, after the first step plate and the second step plate are arranged at the two corners of the wall body, the lower step plate and the second step plate are supported. The side plate and the upper plate are attached to the end faces of the wall body.
That is, since the first step plate is arranged at the corner of the wall body before the lower plate is attached to the end surface of the wall body, the lower plate interferes with the first step plate when the first step plate is arranged. There is no. Similarly, since the second step plate is arranged at the corner of the wall body before the upper plate is attached to the end face of the wall body, the upper plate interferes with the second step plate when the second step plate is arranged. There is no such thing.
Since neither the third step plate nor the fourth step plate is a step plate arranged at the corner of the wall body, there is no particular problem and the lower plate and the upper plate are notches attached to the end faces of the wall body. Alternatively, it can be inserted into the insertion groove.
As a result, at the assembly site of the staircase device, it is not necessary to manually cut the portion of the side plate that interferes with the step plate, so that the staircase device can be easily assembled.

The lower plate and the first step plate are arranged on the lower floor side, and the upper plate and the second step plate are arranged on the upper floor side. Therefore, there is no possibility that the lower plate and the first step plate and the upper plate and the second step plate interfere with each other. Therefore, either the arrangement of the first step plate or the arrangement of the second step plate may be executed first.
Further, since the first to fourth step plates are arranged in different steps, there is no possibility that the first to fourth step plates will interfere with each other. Therefore, either the arrangement of the third step plate or the arrangement of the fourth step plate may be executed first.
As a result of the above, the degree of freedom in the assembly procedure of the staircase device is high.

The lower plate supports the first step plate and the third step plate, and the upper plate supports the second step plate and the fourth step plate. That is, since it is not necessary to use individual side plates for each of the four step plates, an increase in the number of parts is suppressed. Further, since the number of side plates attached to the end faces of the wall body is two, the increase in work man-hours is suppressed.

The straight stairs on the lower floor run along one side of the wall, and the straight stairs on the upper floor run along the other side of the wall. In the following, one side / other side of the wall body is referred to as a lower floor side wall surface / upper floor side wall surface. In addition, the side closer to the wall surface on the lower floor side in the horizontal direction along the end face of the wall body / the side closer to the wall surface on the upper floor side is called the left side / right side, and is called the wall surface on the lower floor side (and the wall surface on the upper floor side). The side far from the end face of the wall body in the horizontal direction / the side close to the end face of the wall body is called the front side / rear side.
The first step plate is arranged at the corner between the end surface of the wall body and the wall surface on the lower floor side. The second step plate is arranged at the corner between the end face of the wall body and the wall surface on the upper floor side.

In the present embodiment, the lower plate is first arranged on the right side of the first step plate in order to contact the end face of the wall body, and then the first step plate is placed in the notch of the lower plate. It is attached to the end face of the wall body so that it can be inserted from the left side. The upper plate is first placed on the left side of the second step plate to contact the end face of the wall body, and then the second step plate is inserted from the right side into the notch of the upper plate. Attached to the end face of the wall.
The lower plate and the upper plate are attached to the end faces of the wall body so as to be in vertical contact with each other. Therefore, if one of the lower plate and the upper plate is accurately positioned, by bringing the other into contact with one, accurate positioning of the other in the vertical direction can be easily performed.

Since neither the third step plate nor the fourth step plate is a step plate arranged at the corner of the wall body, there is no particular problem and the insertion groove of the lower plate and the upper plate attached to the end face of the wall body. Can be inserted from the right side.
Since the lower plate has an insertion groove into which the third step plate is inserted and does not have a notch into which the third step plate is inserted, the strength of the lower plate is high. Similarly, since the upper plate has an insertion groove into which the fourth step plate is inserted and does not have a notch into which the fourth step plate is inserted, the strength of the upper plate is high.

In the present embodiment, the surrounding stairs are provided with four stairs.
The portion of the peripheral edge of the first step plate along the end face of the wall body is supported by the lower plate, and the portion along the wall surface on the lower floor side is supported by the side plate.
Since the side plate that supports the first step plate together with the lower side plate constitutes a straight staircase on the lower floor side, the number of members can be reduced.
Since the side plate is attached after the arrangement of the first step plate, it does not interfere with the first step plate. Further, since the side plate is attached to the wall surface on the lower floor side, it does not interfere with the second step plate.
Since either the lower plate or the side plate may be attached first, the degree of freedom in the assembly procedure of the staircase device is high.

The portion of the peripheral edge of the second step plate along the end face of the wall body is supported by the upper plate, and the portion along the wall surface on the upper floor side is supported by the mounting table.
Since the mounting table is attached after the placement of the second step plate, it does not interfere with the second step plate. Further, since the mounting table is mounted on the wall surface on the upper floor side, it does not interfere with the first step plate.
Since either the upper plate or the mounting table may be attached first, the degree of freedom in the assembly procedure of the staircase device is high.

When one of the upper plate and the mounting table is attached to the wall before the other, the other protruding part (contact part) is contacted with the accurately positioned one protruding part (contact part) from the upper side or the lower side. If this is done, accurate positioning of the other in the vertical direction can be easily performed.
The protrusions (contact portions) of the upper plate and the mounting table are each blindfolded from the upper side by the second step plate.

In the present embodiment, the surrounding stairs are provided with six steps.
The portion of the peripheral edge of the first step plate along the end face of the wall body is supported by the lower plate, and the portion along the wall surface on the lower floor side is supported by the lower auxiliary side plate.
Since the lower auxiliary side plate is attached after the arrangement of the first step plate, it does not interfere with the first step plate. Further, since the lower auxiliary side plate is attached to the wall surface on the lower floor side, it does not interfere with the second step plate.
Since either the lower side plate or the lower auxiliary side plate may be attached first, the degree of freedom in the assembly procedure of the staircase device is high.

When one of the lower plate and the lower auxiliary side plate is attached to the wall body before the other, the other protrusion (contact part) is placed on the lower or lower side of one of the accurately positioned protrusions (contact part). If they are brought into contact with each other, accurate positioning in the vertical direction of the other can be easily performed.
The protruding portions (contact portions) of the lower side plate and the lower auxiliary side plate are blindfolded from above by the first step plate.

The portion of the peripheral edge of the second step plate along the end face of the wall body is supported by the upper plate, and the portion along the wall surface on the upper floor side is supported by the upper auxiliary side plate.
Since the upper auxiliary side plate is attached after the arrangement of the second step plate, it does not interfere with the second step plate. Further, since the upper auxiliary side plate is attached to the wall surface on the upper floor side, it does not interfere with the first step plate.
Since either the upper plate or the upper auxiliary side plate may be attached first, the degree of freedom in the assembly procedure of the staircase device is high.

When one of the upper plate and the upper auxiliary side plate is attached to the wall body before the other, the other protrusion (contact part) is attached to one of the accurately positioned protrusions (contact part) from the upper side or the lower side. If they are in contact with each other, accurate positioning of the other in the vertical direction can be easily performed.
The protrusions (contact portions) of the upper plate and the upper auxiliary side plate are each blindfolded from the upper side by the second step plate.

Since the fifth step plate is not a step plate arranged at the corners, it can be inserted from the rear side into the insertion groove of the side plate attached to the wall surface on the lower floor side without any particular problem. Similarly, since the sixth step plate is not a step plate arranged at the corners, it can be inserted from the front side into the insertion groove of the upper auxiliary side plate attached to the wall surface on the upper floor side without any particular problem.
Since the fifth step plate is supported by the side plates constituting the straight stairs on the lower floor side and the sixth step plate is supported by the upper auxiliary side plate, the number of members can be reduced.
Since the first to sixth step plates are arranged in different steps, there is no possibility that the first to sixth step plates will interfere with each other. Therefore, any of the arrangements of the third to sixth step plates may be performed first, so that the degree of freedom in the assembling procedure of the staircase device is high.

In the present embodiment, the fixing member and the recess for fixing the upper plate to the wall body by using the fixing member are blindfolded by the decorative member, so that the aesthetic appearance of the staircase device can be improved. can.
One side of the decorative member is made up, and is flush with the made-up side of the upper plate. Further, since the inner surface of the large recess corresponding to the plurality of fixing members is covered with the decorative member, the decorative member is used as compared with the case where the inner surface of the small recess corresponding to one fixing member is covered with the decorative member. It is possible to reduce the discomfort caused by being present.

In the present embodiment, a fixing member, a convex portion for fixing the upper plate to the wall body by using the fixing member, and an upper end surface (end surface provided with the convex portion) of the upper plate. However, since it is blindfolded by the decorative member, the aesthetic appearance of the staircase device can be improved.
One side of the decorative member is made up, and is flush with the made-up side of the upper plate. Further, since the large convex portion corresponding to the plurality of fixing members is covered with the decorative member together with the upper end surface of the upper plate, the inner surface of the small concave portion corresponding to one fixing member is covered with the decorative member. It is possible to reduce the discomfort caused by the use of the decorative member.

In the present embodiment, the concave portion of the decorative member is open to the other surface and the end surface of the decorative member. The other surface of the decorative member faces the wall body, and the end surface of the decorative member faces the upper end surface of the upper plate. Therefore, the concave portion of the decorative member can be blindfolded.

In the present embodiment, the convex portion of the upper plate and the inner surface of the concave portion of the decorative member are separated from each other in the thickness direction (that is, the front-rear direction) of the upper plate. This is because the length of the convex portion in the front-rear direction is shorter than the length of the concave portion in the front-rear direction. Therefore, even if a dimensional error in the front-rear direction occurs in the convex portion of the upper plate or the concave portion of the decorative member, the decorated side of the upper plate and the decorated side of the decorative member can be made flush with each other.

In the present embodiment, the convex portion of the upper plate and the inner surface of the concave portion of the decorative member are separated from each other in the lateral direction (that is, the left-right direction) of the upper plate. This is because the length of the convex portion in the left-right direction is shorter than the length of the opening in the left-right direction of the concave portion. Therefore, even if there is a dimensional error in the left-right direction in the convex portion of the upper plate or the concave portion of the decorative member, it is possible to make both end faces of the upper plate in the left-right direction and both end faces of the decorative member in the left-right direction flush with each other. can.

In the present embodiment, both ends in the left-right direction on the other surface of the decorative member are decorated.
By the way, depending on the configuration of the staircase device, one of both ends of the decorative member in the left-right direction may protrude from the wall body, and the other surface of the decorative member may be visible to the public. However, no matter which end is exposed to the public, there is no risk of spoiling the aesthetics because it is made up.

In the present embodiment, the upper end surface of the upper plate and the end surface of the decorative member are flat. Therefore, it is easy to bring the upper end surface of the upper plate into contact with the end surface of the decorative member without a gap. Therefore, it is possible to prevent an unnecessary gap from being formed between the upper plate and the decorative member.

In the present embodiment, the convex portion of the upper plate and the inner surface of the concave portion of the decorative member are separated from each other in the front-rear direction and the left-right direction of the upper plate. This is because the length of the convex portion in the front-rear direction is shorter than the length of the concave portion in the front-rear direction, and the length of the convex portion in the left-right direction is shorter than the opening length of the concave portion in the left-right direction. Therefore, even if a dimensional error occurs in the convex portion of the upper plate or the concave portion of the decorative member, the decorated side of the upper plate and the decorated side of the decorative member can be made flush with each other. Both end faces in the left-right direction and both end faces in the left-right direction of the decorative member can be flush with each other.

Further, both ends in the left-right direction on the other surface of the decorative member are decorated with a thin decorative board.
By the way, depending on the configuration of the staircase device, one of both ends of the decorative member in the left-right direction may protrude from the wall body, and the other surface of the decorative member may be visible to the public. However, no matter which end is exposed to the public, there is no risk of spoiling the aesthetics because it is decorated with a decorative board.
Since the decorative board is attached to both ends of the decorative member in the left-right direction, the thickness of the left end portion of the decorative member including the decorative board and the thickness of the right end portion of the decorative member including the decorative board are made equal to each other. be able to.

The upper end surface of the upper plate and the end surface of the decorative member are flat. Therefore, it is easy to bring the upper end surface of the upper plate into contact with the end surface of the decorative member without a gap. Therefore, it is possible to prevent an unnecessary gap from being formed between the upper plate and the decorative member.
When the convex portion is provided on the upper plate, for example, by cutting the plate material to be the upper plate by using an end mill, the convex portion can be provided on the upper end surface of the upper plate while flattening the upper end surface of the upper plate. At this time, a concave R surface is formed at the base of the convex portion.

In the present embodiment, the lower plate and the upper plate are attached to the end surface of the wall body so that the end surface for positioning and the wall surface on the lower floor side or the wall surface on the upper floor side are flush with each other. Therefore, accurate positioning of the lower plate and the upper plate in the left-right direction can be easily performed.

When the staircase device and the method for assembling the staircase device of the present embodiment are used, the staircase device can be easily assembled.

It is a top view which shows the stairs apparatus which concerns on Embodiment 1. FIG. It is a side view which shows the various side plates provided in the staircase device. It is an enlarged plan view which shows the stairs apparatus. It is a rear view which shows the stairs apparatus. It is sectional drawing which shows the side plate of the straight stairs on the lower floor side and the side plate of the surrounding stairs provided in the stairs device. It is sectional drawing which shows the side plate of the straight stairs on the upper floor side, and the side plate of the surrounding stairs provided in the stairs device. It is a perspective view which shows the upper plate and the mounting stand provided with the stairs apparatus. It is a top view for demonstrating the procedure of arranging the step board of a round staircase at a corner of a wall body. It is a side view for demonstrating the procedure of attaching the side plate of the straight stairs on the lower floor side to a wall body. It is a side view for demonstrating the procedure of attaching the side plate of a mounting table and a straight staircase on the upper floor side to a wall body. It is an exploded perspective view of the upper plate. It is a rear view which shows the stairs apparatus which concerns on Embodiment 2. FIG. It is a top view which shows the stairs apparatus which concerns on Embodiment 3. FIG. It is a rear view which shows the stairs apparatus. It is a side view which shows the various side plates provided in the staircase device. It is a side view for demonstrating the procedure of attaching the lower auxiliary side plate and the side plate of the straight stairs on the lower floor side to a wall body. It is a side view for demonstrating the procedure of attaching the upper auxiliary side plate and the side plate of the straight stairs on the upper floor side to a wall body. It is a perspective view which shows the upper plate provided with the stairs apparatus which concerns on Embodiment 4. FIG. It is an exploded perspective view of the upper plate. It is an exploded rear view of the upper plate. It is an exploded side view of the upper plate.

Hereinafter, the present invention will be described in detail with reference to the drawings showing the embodiments thereof.

Embodiment 1.
FIG. 1 is a plan view showing a staircase device according to the first embodiment.
In the figure, 1 is a staircase device. The staircase device 1 is provided so as to be folded back in a U shape along both sides of the wall body 2 and the end surface 21 and to rise clockwise. In the following, of the two sides of the wall body 2, the left side surface (the surface on the right side when facing the end surface 21) in FIG. 1 is referred to as the left side surface 22, and the right side surface in FIG. 1 is referred to as the right side surface 23. Further, the side close to the left surface 22 in the lateral direction along the end surface 21 / the side close to the right surface 23 is referred to as the left side / right side, and the side far from the lateral end surface 21 along the left surface 22 (and the right surface 23) / the side close to the end surface 21. Is called the front side / rear side.
The left surface 22, the end surface 21, and the right surface 23 constitute an inner peripheral surface of the staircase device 1. The left side 22 is the wall surface on the lower floor side, and the right side 23 is the wall surface on the upper floor side.

In the figure, 24 to 26 are three wall surfaces of the skeleton surrounding the wall body 2. The wall surface 24 faces the end surface 21 of the wall body 2. The wall surface 25 faces the left surface 22 of the wall body 2 and is continuous with the wall surface 24. The wall surface 26 faces the right surface 23 of the wall body 2 and is continuous with the wall surface 24. The wall surfaces 25, 24, and 26 form the outer peripheral surface of the staircase device 1.

The staircase device 1 includes a straight staircase 3 on the lower floor side, a straight staircase 4 on the upper floor side, and a round staircase 5.
The straight staircase 3 on the lower floor side includes a side plate 31 on the inner peripheral side, a side plate 32 on the outer peripheral side, N step plates 33, 33, ..., And N riser plates 34, 34, .... However, N is an integer of N ≧ 2.

The side plate 31 is attached to the left surface 22 of the wall body 2 so that one surface of the side plate 31 is in contact with the left surface 22 of the wall body 2. Hereinafter, one side / other side of the side plate 31 is referred to as a back surface / front surface of the side plate 31.
The side plate 32 is attached to the wall surface 25 so that one surface of the side plate 32 is in contact with the wall surface 25 and the other surface of the side plate 32 faces the side plate 31. Hereinafter, the other surface of the side plate 32 is referred to as the surface of the side plate 32.

FIG. 2 is a side view showing various side plates included in the staircase device 1. FIG. 2 shows the surfaces of various side plates. The hatched portion shown in FIG. 2 is a groove (horizontal groove 311 and vertical groove 312, which will be described later).
The side plate 31 shown in FIGS. 1 and 2 extends so as to incline from the lower floor side to the upper floor side (from the front lower side to the rear upper side). The rear end surface 31a of the side plate 31 is flush with the end surface 21 of the wall body 2.
A horizontal groove 311 and a vertical groove 312 are provided on the surface of the side plate 31. The lateral groove 311 extends laterally. The rear end of the lateral groove 311 is open. The vertical groove 312 extends in the vertical direction (vertical direction). The lower end of the flutes 312 is open. The upper end portion of the vertical groove 312 is continuous in the vicinity of the front end portion of the horizontal groove 311. The side plate 31 is provided with N horizontal grooves 311, 311, ... And vertical grooves 312, 312, ... In a staircase pattern.
Similar to the side plate 31, the surface of the side plate 32 is also provided with N horizontal grooves and vertical grooves.
The N lateral grooves 311, 311, ... Of the side plate 31 and the N lateral grooves of the side plate 32 have a one-to-one correspondence, and the height of the lateral groove 311 from the floor surface and the floor surface of the lateral groove corresponding to the lateral groove 311 in the side plate 32. It is the same as the height from.

Each step plate 33 has a rectangular shape that is long in one direction. Both ends of the step plate 33 in the longitudinal direction are attached to the side plates 31 and 32 so that one surface of the step plate 33 faces upward and is horizontal. The end portion on the inner peripheral side of the step plate 33 is inserted into the lateral groove 311 of the side plate 31. The outer peripheral end of the step plate 33 is inserted into the lateral groove of the side plate 32.

Each riser plate 34 has a rectangular shape that is long in one direction. Of the riser plates 34, 34, ..., Each riser plate 34 excluding the lowermost riser plate 34 extends over two adjacent step plates 33, 33. Each riser plate 34 hangs down from the upper floor side step plate 33 to the lower floor side step plate 33 along the longitudinal direction of the riser plate 34 along the opposite direction of the side plates 31 and 32. The upper end of the riser plate 34 is inserted into a groove provided on the lower surface of the step plate 33 and attached to the lower surface of the step plate 33 on the upper floor side. The lower end of the riser plate 34 is attached to the rear end surface of the step plate 33 on the lower floor side. The end portion on the inner peripheral side of the riser plate 34 is inserted into the vertical groove 312 of the side plate 31. The outer peripheral end of the riser plate 34 is inserted into the vertical groove of the side plate 32.
The difference between the lowermost riser plate 34 and the other riser plates 34 is that the lowermost riser plate 34 extends over the lowermost step plate 33 and the floor surface.

Inside the lateral groove 311 of the side plate 31, a horizontal upper surface and a lower surface inclined so as to be lowered toward the rear side are provided. The upper surface of the step plate 33 is in contact with the upper surface inside the lateral groove 311. A wedge-shaped member (not shown) is fitted between the lower surface of the step plate 33 and the lower surface inside the lateral groove 311.

The straight staircase 4 on the upper floor side includes a side plate 41 on the inner peripheral side, a side plate 42 on the outer peripheral side, M step plates 43, 43, ..., And M riser plates 44, 44, .... However, M is an integer of M ≧ 2.
The configuration of the straight staircase 4 on the upper floor side is substantially the same as the configuration of the straight staircase 3 on the lower floor side. The side plates 41, 42, step plate 43, and riser plate 44 of the straight staircase 4 on the upper floor side are substantially the same as the side plates 31, 32, step plate 33, and riser plate 34 of the straight staircase 3 on the lower floor side.

The side plate 41 is attached to the right surface 23 of the wall body 2 so that one surface of the side plate 41 is in contact with the right surface 23 of the wall body 2. Hereinafter, one surface / the other surface of the side plate 41 is referred to as a back surface / front surface of the side plate 41. The surface of the side plate 41 is shown in FIG.
The side plate 41 extends so as to incline from the lower floor side to the upper floor side (from the rear lower side to the front upper side). A lower end surface 41a and a rear end surface 41b are provided at the lower end portion of the side plate 41 in the longitudinal direction. The lower end surface 41a is parallel to the floor surface, the rear end surface 41b is flush with the end surface 21 of the wall body 2, and the lower end surface 41a and the rear end surface 41b are continuous.

On the surface of the side plate 41, M horizontal grooves 411, 411, ... And vertical grooves 421, 421, ... Are provided. The horizontal groove 411 and the vertical groove 412 are substantially the same as the horizontal groove 311 and the vertical groove 312 of the straight staircase 3 on the lower floor side, but the front end portion of the horizontal groove 411 is open and the upper end portion of the vertical groove 412 is after the horizontal groove 411. It is continuous near the end.
The side plate 42 is attached to the wall surface 26 so that one surface of the side plate 42 is in contact with the wall surface 26 and the other surface of the side plate 42 faces the side plate 41. Hereinafter, the other surface of the side plate 42 is referred to as the surface of the side plate 42. Similar to the side plate 42, the surface of the side plate 42 is also provided with M horizontal grooves and vertical grooves.

Each step plate 43 is attached to the side plates 41 and 42. The end on the inner peripheral side of the step plate 43 is inserted into the lateral groove 411. The outer peripheral end of the step plate 43 is inserted into the lateral groove of the side plate 42.
Of the riser plates 44, 44, ..., Each riser plate 44 excluding the lowermost riser plate 44 extends over two adjacent step plates 43, 43. The lowermost riser plate 44 extends to the lowermost step plate 43 and the step plate 514 described later. The end on the inner peripheral side of the riser plate 44 is inserted into the vertical groove 412 of the side plate 41. The outer peripheral end of the riser plate 44 is inserted into the vertical groove of the side plate 42.

FIG. 3 is an enlarged plan view showing the staircase device 1. FIG. 4 is a rear view showing the staircase device 1. 3 and 4 show the staircase device 1 in the vicinity of the end face 21 of the wall body 2. FIG. 4 shows the side plates 31, 41 of the straight stairs 3 and 4, the lower plate 61, the upper plate 62, and the mounting table 63, which will be described later. The hatched portion shown in FIG. 4 is a groove (horizontal groove 611, vertical groove 612, etc., which will be described later).
The round stairs 5 shown in FIGS. 1, 3 and 4 are configured to rotate 180 ° in four steps at unequal intervals. The round staircase 5 includes a side plate 50, four step plates 511 to 514, four riser plates 521 to 524, a lower plate 61, an upper plate 62, and a mounting table 63.

The side plate 50 is attached to the wall surface 24 so that one surface of the side plate 50 is in contact with the wall surface 24. Hereinafter, the other surface of the side plate 50 is referred to as the surface of the side plate 50.
The side plate 50 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). The left end portion of the side plate 50 is in contact with the side plate 32 on the outer peripheral side of the straight staircase 3 on the lower floor side, and the right end portion of the side plate 50 is in contact with the side plate 42 on the outer peripheral side of the straight staircase 4 on the upper floor side. ..

The step plates 511 to 514 are arranged in a plane view arc at intervals of 60 °, 30 °, 30 °, and 60 °.
The shapes of the step plate 511 and the step plate 512 (step plate 514 and step plate 513) in a plan view are a substantially right trapezoid and a substantially right triangle. These are a right-angled trapezoid and a right-angled triangle when one rectangle is divided into a right-angled trapezoid having a 60 ° corner centered on one apex of the rectangle and a right-angled triangle having a 30 ° corner. Corresponds to.

The step plate 511 (first step plate) has a right-angled trapezoidal shape with a corner of 60 °. However, the step plate 511 has a rectangular notch at a corner of 60 °. The cutout portion of the step plate 511 is along the corner portion (the left corner portion of the wall body 2) between the end surface 21 and the left surface 22 of the wall body 2. Of the two 90 ° corners of the step plate 511, the one adjacent to the 120 ° corner of the step plate 511 is along the corners of the wall surfaces 24 and 25. The step plate 511 is adjacent to the upper floor side of the uppermost step plate 33 in the straight stairs 3 on the lower floor side. The direction of the nose of the step plate 511 and the direction of the step nose of the step plate 33 are the same.
The step plate 512 (third step plate) has a right-angled triangular shape with a corner of 30 °. However, the step plate 512 has a shape in which a 30 ° corner of a right triangle is cut off. The step plate 512 is adjacent to the upper floor side of the step plate 511. The step nose of the step board 512 is the hypotenuse of the step board 512. The angle from the nose of the step plate 511 to the step nose of the step plate 512 is 60 °.

The step plate 513 (fourth step plate) has a right-angled triangular shape with a corner of 30 °. However, the step plate 513 has a shape in which a 30 ° corner of a right triangle is cut off. The step plate 513 is adjacent to the upper floor side of the step plate 512. The nose of the step plate 513 is an adjacent side constituting a 30 ° corner portion of the step plate 513. The angle from the nose of the step plate 511 to the step nose of the step plate 513 is 90 °.
The step plate 514 (second step plate) has a right-angled trapezoidal shape with a corner of 60 °. However, the step plate 514 has a rectangular notch at a corner of 60 °. The cutout portion of the step plate 514 is along the corner portion (the right corner portion of the wall body 2) between the end surface 21 and the right surface 23 of the wall body 2. Of the two 90 ° corners of the step plate 514, the one adjacent to the 120 ° corner of the step plate 514 is along the corners of the wall surfaces 24 and 26. The step plate 514 is adjacent to the upper floor side of the step plate 513, and is adjacent to the lower floor side of the lowermost step plate 43 in the straight staircase 4 on the upper floor side. The angle from the nose of the step plate 511 to the step nose of the step plate 514 is 120 °.
On the front end surface of the step plate 514, the lowermost riser plate 44 in the straight staircase 4 on the upper floor side is attached.
The angle from the step nose of the step plate 511 to the step nose of the lowermost step plate 43 in the straight staircase 4 on the upper floor side is 180 °.

FIG. 5 is a cross-sectional view showing a side plate 32 of a straight staircase 3 on the lower floor side and a side plate 50 of a circular staircase 5 provided in the staircase device 1.
FIG. 6 is a cross-sectional view showing the side plate 42 of the straight staircase 4 on the upper floor side and the side plate 50 of the round staircase 5 provided in the staircase device 1.
Four lateral grooves 501, 501, ... Are provided on the surface of the side plate 50. The horizontal groove 501 is substantially the same as the horizontal groove 311 of the straight staircase 3 on the lower floor side. However, the right end of the lateral groove 501 is open.
On the surface of the side plate 50, a continuous vertical groove is provided in the vicinity of the left end portion of the horizontal groove 501 for each horizontal groove 501 excluding the horizontal groove 501 at the lowermost stage. The vertical groove related to the horizontal groove 501 is substantially the same as the vertical groove 312 of the straight staircase 3 on the lower floor side.

A horizontal groove 502 is provided on the surface of the side plate 32 of the straight staircase 3 on the lower floor side. The lateral groove 502 is continuous with the lateral groove 501 (see FIG. 5) at the bottom of the side plate 50. Further, on the surface of the side plate 32 of the straight staircase 3 on the lower floor side, a continuous vertical groove is provided in the vicinity of the front end portion of the horizontal groove 502. The vertical groove related to the horizontal groove 502 is substantially the same as the vertical groove 312 of the straight staircase 3 on the lower floor side.
A horizontal groove 503 is provided on the surface of the side plate 42 of the straight staircase 4 on the upper floor side. The lateral groove 503 is continuous with the lateral groove 501 (see FIG. 6) at the uppermost stage of the side plate 50.

The lower plate 61 and the upper plate 62 shown in FIGS. 1 to 4 are side plates facing the side plate 50 in the round staircase 5.
The lower plate 61 has a long rectangular shape in one direction. The lower plate 61 extends in the vertical direction and is attached to the end surface 21 of the wall body 2 so that one surface of the lower plate 61 comes into contact with the end surface 21 of the wall body 2. Hereinafter, one surface / other surface of the lower plate 61 is referred to as a back surface / front surface of the lower plate 61.
The left side portion of the lower plate 61 (the long side portion on the right side in FIG. 4) protrudes to the left side beyond the left side surface 22 of the wall body 2. The left end surface 61a of the lower plate 61 is flush with the surface of the side plate 31.
The right side portion of the lower plate 61 is located at the center portion in the left-right direction of the end surface 21 of the wall body 2.

The lower plate 61 has a notch 610, a horizontal groove 611 (insertion groove), a vertical groove 612, and an extension portion 613.
The notch 610 is provided on the left side of the lower plate 61 so that the left side is open.
By the way, a horizontal groove 601 (insertion groove) and a vertical groove 602 are provided on the surface of the side plate 31. The horizontal groove 601 and the vertical groove 602 are arranged on the upper floor side of the horizontal groove 311 and the vertical groove 312 at the uppermost stage of the side plate 31, and have substantially the same configuration as the horizontal groove 311 and the vertical groove 312. The rear end of the lateral groove 601 is open and continuous with the notch 610 of the lower plate 61.

The horizontal groove 611 and the vertical groove 612 are provided on the surface of the lower plate 61. The horizontal groove 611 and the vertical groove 612 are substantially the same as the horizontal groove 311 and the vertical groove 312 of the straight staircase 3 on the lower floor side, but the right end of the horizontal groove 611 is open and the upper end of the vertical groove 612 is the left end of the horizontal groove 611. It is continuous near the part. The horizontal groove 611 is arranged on the upper floor side of the notch 610.
The height of the notch 610 and the lateral groove 611 from the floor surface is the same as the height of the lateral grooves 501, 501, ... Of the side plates 50, the two lateral grooves 501, 501 on the lower floor side, respectively.

An extension portion 613 is extended to the right at the lower part of the right side (the long side on the left side in FIG. 4) of the lower plate 61. The extending portion 613 has a rectangular plate shape, and both sides of the extending portion 613 are flush with both sides of the lower plate 61. The right end surface 61b of the extension portion 613 is flush with the right surface 23 of the wall body 2.

The step plate 511 is attached to the side plates 31, 32, 50 and the lower side plate 61 so that one surface of the step plate 511 faces upward and is horizontal. A part of the peripheral edge of the step plate 511 is inserted into the notch 610 of the lower plate 61 and the lateral groove 601 of the side plate 31. More specifically, the portion of the peripheral edge of the notch portion of the step plate 511 (the portion along the left corner of the wall body 2) along the end surface 21 is inserted into the notch 610 of the lower plate 61, and the left surface thereof. The portion along 22 is inserted into the lateral groove 601 of the side plate 31. The other part of the peripheral edge of the step plate 511 is inserted into the lateral grooves 501 and 502 of the side plates 50 and 32.

The riser plate 521 extends over the step plate 511 and the uppermost step plate 33 of the straight staircase 3 on the lower floor side. The upper end of the riser plate 521 is inserted into a groove provided on the lower surface of the step plate 511 and attached to the lower surface of the step plate 511. The lower end of the riser plate 521 is attached to the rear end surface of the step plate 33. The end portion on the inner peripheral side of the riser plate 521 is inserted into the vertical groove 312 of the side plate 31. The outer peripheral end of the riser plate 521 is inserted into the vertical groove of the side plate 32 with respect to the lateral groove 502.

The step plate 512 is attached to the side plate 50 and the lower side plate 61 so that one surface of the step plate 512 faces upward and is horizontal. A part of the peripheral edge of the step plate 512 is inserted into the lateral groove 611 of the lower plate 61. The other portion of the peripheral edge of the step plate 512 is inserted into the lateral groove 501 of the side plate 50.
The riser plate 522 extends over the step plate 512 and the step plate 511. The upper end of the riser plate 522 is inserted into a groove provided on the lower surface of the step plate 512 and attached to the lower surface of the step plate 512. The lower end of the riser plate 522 is attached to the right end surface of the step plate 511. The end on the inner peripheral side of the riser plate 522 is inserted into the vertical groove 612 of the lower plate 61. The outer peripheral end of the riser plate 522 is inserted into the vertical groove of the side plate 50 with respect to the lateral groove 501.

FIG. 7 is a perspective view showing the upper plate 62 and the mounting table 63 included in the staircase device 1. The portion with the pointillism shown in FIG. 7 is the surface to be decorated.
The upper plate 62 shown in FIGS. 1 to 4 and 7 has a long rectangular shape in one direction. The upper plate 62 extends in the vertical direction and is attached to the end surface 21 of the wall body 2 so that one surface of the upper plate 62 comes into contact with the end surface 21 of the wall body 2. Hereinafter, one surface / other surface of the upper plate 62 is referred to as a back surface / front surface of the upper plate 62. The surface of the upper plate 62 is also shown in FIG. The surface of the upper plate 62 is flush with the surface of the lower plate 61.
The left half of the lower end surface of the upper plate 62 is in contact with the right half of the upper end surface of the lower plate 61. The right end surface 62a of the upper plate 62 is flush with the right surface 23 of the wall body 2.

The upper plate 62 has a horizontal groove 621 (insertion groove), a vertical groove 622, a notch 623, a vertical groove 624, a blindfold portion 625, and a contact portion 626 (protruding portion).
The horizontal groove 621 and the vertical groove 622 are provided on the surface of the upper plate 62. The horizontal groove 621 and the vertical groove 622 are substantially the same as the horizontal groove 611 and the vertical groove 612 of the lower plate 61.

The notch 623 is provided on the right side of the upper plate 62 so that the right side is open. The notch 623 is arranged on the upper floor side of the horizontal groove 621.
The vertical groove 624 is provided on the surface of the upper plate 62. The vertical groove 624 extends in the vertical direction, and the upper end portion of the vertical groove 624 is continuous in the middle of the notch 623 in the left-right direction. The lower end of the flute 622 is open.
The height from the floor surface of each of the lateral grooves 621 and the notch 623 is the same as the height of each of the two lateral grooves 501, 501 on the upper floor side of the lateral grooves 501, 501, ... Of the side plate 50.

The blindfold portion 625 and the contact portion 626 form a plate shape flush with both sides of the upper plate 62, and are provided on the right side portion of the upper plate 62. The blindfold portion 625 is located above the notch 623, and the contact portion 626 is located below the notch 623.
The blindfold portion 625 and the contact portion 626 project to the right beyond the right surface 23. The tip surface 62b of the blindfold portion 625 is flush with the surface of the side plate 41 of the straight staircase 4 on the upper floor side. The blindfold portion 625 blindfolds the rear end surface 41b of the side plate 41.

The mounting table 63 has a rectangular plate shape that is long in one direction. The mounting table 63 extends in the vertical direction and is attached to the right surface 23 of the wall body 2 so that one surface of the mounting table 63 comes into contact with the right surface 23 of the wall body 2. Hereinafter, one side / other side of the mounting table 63 is referred to as a back surface / front surface of the mounting table 63. The surface of the mounting table 63 is shown in FIG.
The upper end surface of the mounting table 63 is separated from the lower end surface 41a of the side plate 41 of the straight staircase 4 on the upper floor side by the same length as the thickness of the step plate 514. The space formed between the upper end surface of the mounting table 63 and the lower end surface 41a of the side plate 41 is continuous with the notch 623 of the upper plate 62.

The mounting table 63 has a contact portion 631 (protruding portion). The contact portion 631 has a flush plate shape on both sides of the mounting table 63, and is provided on the rear side portion of the mounting table 63. The contact portion 631 protrudes rearward beyond the end surface 21 of the wall body 2.
The contact portion 631 of the mounting table 63 is in contact with the contact portion 626 of the upper plate 62 from above.

The step plate 513 is attached to the side plate 50 and the upper plate 62 so that one surface of the step plate 513 faces upward and is horizontal. A part of the peripheral edge of the step plate 513 is inserted into the lateral groove 621 of the upper plate 62. The other portion of the peripheral edge of the step plate 513 is inserted into the lateral groove 501 of the side plate 50.
The riser plate 523 extends over the step plate 513 and the step plate 512. The upper end of the riser plate 523 is inserted into a groove provided on the lower surface of the step plate 513 and attached to the lower surface of the step plate 513. The lower end of the riser plate 523 is attached to the right end surface of the step plate 512. The end on the inner peripheral side of the riser plate 523 is inserted into the vertical groove 622 of the upper plate 62. The outer peripheral end of the riser plate 523 is inserted into the vertical groove of the side plate 50 with respect to the lateral groove 501.

The step plate 514 is attached to the side plates 41, 42, 50 and the upper plate 62 so that one surface of the step plate 514 faces upward and is horizontal. A part of the peripheral edge of the step plate 514 is inserted into the space formed between the notch 623 of the upper plate 62 and the upper end surface of the mounting table 63 and the lower end surface 41a of the side plate 41. More specifically, in the peripheral edge of the notch portion of the step plate 514 (the portion along the right corner of the wall body 2), the portion along the end surface 21 is inserted into the notch 623 of the upper plate 62, and the right surface. The portion along the 23 is inserted into the space formed between the upper end surface of the mounting table 63 and the lower end surface 41a of the side plate 41. The other part of the peripheral edge of the step plate 514 is inserted into the lateral grooves 501 and 503 of the side plates 50 and 42.

The riser plate 524 extends over the step plate 514 and the step plate 513. The upper end of the riser plate 524 is inserted into a groove provided on the lower surface of the step plate 514 and attached to the lower surface of the step plate 514. The lower end of the riser plate 524 is attached to the right end surface of the step plate 513. The end on the inner peripheral side of the riser plate 524 is inserted into the vertical groove 412 of the side plate 41. The outer peripheral end of the riser plate 524 is inserted into the vertical groove of the side plate 50 with respect to the lateral groove 501.

Of the surfaces of the members constituting the straight stairs 3 and 4 and the circular stairs 5, at least the surface visible to the user using the staircase device 1 is decorated. For example, as shown in FIG. 7, the surface and upper end surface of the upper plate 62 and the tip surface 62b of the blindfold portion 625 are decorated. Further, the left end surface 62c of the upper plate 62 is decorated.

Next, a method of assembling the staircase device 1 will be described.
First, the side plates 32, 50, and 42 are attached to the wall surfaces 25, 24, and 26, for example, in this order (that is, in order from the lower floor side) (see FIGS. 5 and 6).
Next, the cutout portion of the step plate 511 is in contact with the left corner portion of the wall body 2, so that one surface of the step plate 511 is upward and horizontal, and the step plate 511 is placed on the wall body 2 and the side plates 32, 50. It is placed between and (see Fig. 5). Since the side plate 31 and the lower side plate 61 are not yet attached to the wall body 2, there is a space between the wall body 2 and the side plates 32 and 50. Therefore, the step plate 511 can be arranged without any particular problem.

FIG. 8 is a plan view for explaining a procedure for arranging the step plates 511, 514 of the rotating stairs 5 at the corners of the wall body 2.
The step plate 511 is inserted into the lateral grooves 501 and 502 of the side plates 50 and 32 in a direction orthogonal to the side plates 50 and 32. As a result, a gap is formed between the notched portion of the step plate 511 and the left corner portion of the wall body 2.

FIG. 9 is a side view for explaining a procedure for attaching the side plate 31 of the straight staircase 3 on the lower floor side to the wall body 2.
The side plate 31 is arranged on the front side of the step plate 511 so that the back surface of the side plate 31 is in contact with the left surface 22 of the wall body 2. Next, the side plate 31 is moved backward (to the left in FIG. 9) so that the step plate 511 is inserted into the lateral groove 601 from the rear end portion of the lateral groove 601, and the rear end surface 31a of the side plate 31 is the wall body 2. When it is flush with the end surface 21, it is attached to the left surface 22 of the wall body 2.
Next, the lower plate 61 is arranged on the right side of the step plate 511 so that the back surface of the lower plate 61 comes into contact with the end surface 21 of the wall body 2 (see FIG. 4). Next, the lower plate 61 is moved to the left (to the right in FIG. 4) so that the step plate 511 is inserted into the notch 610 of the lower plate 61 from the left side, and is attached to the end surface 21 of the wall body 2. The lateral positioning of the lower plate 61 along the end surface 21 of the wall body 2 is performed by aligning the right end surface 61b of the lower plate 61 with the right surface 23 of the wall body 2.
After attaching the side plate 31 and the lower plate 61 to the wall body 2, the step plate 511 is attached to the side plates 31, 32, 50 and the lower plate 61.

In the present embodiment, the case where the step plate 511, the side plate 31, and the lower side plate 61 are arranged in this order is exemplified, but the present invention is not limited to this, and for example, the step plate 511, the lower side plate 61, and the side plate 31 are arranged in this order. You may.
The fixing of each side plate to the wall body 2 is performed, for example, by penetrating the bottom surface of the groove provided in the side plate with a fixing member (for example, a countersunk screw).

Next, the cutout portion of the step plate 514 is in contact with the right corner portion of the wall body 2, so that one surface of the step plate 514 is upward and horizontal, and the step plate 514 is the wall body 2 and the side plates 42, 50. It is arranged between and (see FIG. 6). Since the upper plate 62 and the mounting table 63 have not yet been attached to the wall body 2, there is a space between the wall body 2 and the side plates 42 and 50. Therefore, the step plate 514 can be arranged without any particular problem.
Next, the step plate 514 is inserted into the lateral grooves 501 and 503 of the side plates 50 and 42 in the direction orthogonal to the side plates 50 and 42 (see FIG. 8). As a result, a gap is formed between the cutout portion of the step plate 514 and the right corner portion of the wall body 2.

Next, the upper plate 62 is arranged on the left side of the step plate 514 so that the back surface of the upper plate 62 comes into contact with the end surface 21 of the wall body 2 (see FIG. 4). Next, the upper plate 62 is moved to the right (to the left in FIG. 4) so that the step plate 514 is inserted into the notch 623 of the upper plate 62 from the right side, and is attached to the end surface 21 of the wall body 2. For positioning of the upper plate 62 in the direction along the end surface 21 of the wall body 2, the lower end surface of the upper plate 62 is brought into contact with the upper end surface of the lower plate 61, and the right end surface 62a of the upper plate 62 is aligned with the right surface 23 of the wall body 2. It is done by making it flush. By attaching the upper plate 62 to the end surface 21 of the wall body 2 in this way, the contact portion 626 of the upper plate 62 protrudes to the right beyond the right surface 23.

FIG. 10 is a side view for explaining a procedure for attaching the mounting table 63 and the side plate 41 of the straight staircase 4 on the upper floor side to the wall body 2.
The mounting table 63 is arranged below the step plate 514 so that the back surface of the mounting table 63 comes into contact with the right side surface 23 of the wall body 2. Next, the step plate 514 is placed on the upper end surface of the mounting table 63, and the contact portion 631 of the mounting table 63 is in contact with the contact portion 626 of the upper plate 62 from above, so that the mounting table 63 is a wall body. It is attached to the right side 23 of 2. By attaching the mounting table 63 to the right surface 23 of the wall body 2 in this way, the contact portion 631 of the mounting table 63 protrudes rearward beyond the end surface 21 of the wall body 2. The contact portions 626 and 631 of the upper plate 62 and the mounting table 63 are blindfolded from above by the step plate 514. Further, the contact portions 626 and 631 are blindfolded by the user by the step plate 514 and the riser plate 524.
After attaching the upper plate 62 and the mounting base 63 to the wall body 2, the step plate 514 is attached to the side plates 42, 50, the upper plate 62, and the mounting base 63.

The side plate 41 is arranged on the upper side of the step plate 514 so that the back surface of the side plate 41 is in contact with the right surface 23 of the wall body 2. Next, in the side plate 41, the lower end surface 41a of the side plate 41 is in contact with the upper surface of the step plate 514, and the rear end surface 41b of the side plate 41 is flush with the end surface 21 of the wall body 2, so that the right surface of the wall body 2 is flush with the end surface 21 of the wall body 2. Attached to 23. As a result, the step plate 514 is inserted into the space formed between the upper end surface of the mounting table 63 and the lower end surface 41a of the side plate 41. Further, the rear end surface 41b of the side plate 41 is blindfolded by the blindfold portion 625 of the upper plate 62.
In the present embodiment, the case where the step plate 514, the upper plate 62, the mounting table 63, and the side plate 41 are arranged in this order is illustrated, but the present invention is not limited to this, and for example, the side plate 41, the step plate 514, the mounting table 63, and The upper plate 62 may be arranged in this order.

Next, the step plate 512 is inserted from the right end into the lateral groove 611 of the lower plate 61 and the lateral groove 501 of the side plate 50, respectively, and attached to the lower plate 61 and the side plate 50.
Further, the step plate 513 is inserted from the right end into the lateral groove 621 of the upper plate 62 and the lateral groove 501 of the side plate 50, respectively, and attached to the upper plate 62 and the side plate 50.

In the present embodiment, the case where the step plates 511, 514, 512, 513 are attached in this order is illustrated, but the present invention is not limited to this. The step plates 511 and 514 arranged at the corners of the wall body 2 may be attached to the step plates 511 first or the step plates 514 first. Further, for example, after the step plate 511 is attached and before the step plate 514 is attached, the step plate 512 may be attached.

The riser plates 521 to 524 are attached in order from the upper floor side or the lower floor side after all the attachment of the step plates 511 to 514 is completed. In addition, every time any one of the step plates 511 to 514 is attached, the corresponding riser plates 521 to 524 may be attached.

The riser plate 521 is inserted from the lower end into the vertical groove 602 of the side plate 31 and the vertical groove of the side plate 32, respectively, is inserted into the groove of the step plate 511 from the lower side, and is attached to the step plate 511.
The riser plate 522 is inserted from the lower end into the vertical groove 612 of the lower plate 61 and the vertical groove of the side plate 50, respectively, is inserted into the groove of the step plate 512 from the lower side, and is attached to the step plates 511, 512.

The riser plate 523 is inserted from the lower end into the vertical groove 622 of the upper plate 62 and the vertical groove of the side plate 50, respectively, is inserted into the groove of the step plate 513 from the lower side, and is attached to the step plates 512 and 513.
The riser plate 524 is inserted from the lower end into the vertical groove 624 of the upper plate 62 and the vertical groove of the side plate 50, respectively, is inserted into the groove of the step plate 514 from the lower side, and is attached to the step plates 513 and 514.

The straight stairs 3 on the lower floor side can be assembled at any time after the step plate 511 is attached. The procedure for assembling the straight stairs 3 on the lower floor side is the same as the conventional procedure for assembling the straight stairs on the lower floor side. After the straight stairs 3 on the lower floor side are assembled, the riser plate 521 of the rotating stairs 5 is also attached to the uppermost step plate 33 of the straight stairs 3 on the lower floor side.
After the side plates 41 and 42 are attached, the straight stairs 4 on the upper floor side can be assembled at any time. The procedure for assembling the straight staircase 4 on the upper floor side is the same as the conventional procedure for assembling the straight staircase on the upper floor side.

By the way, as shown in FIG. 4, in the upper plate 62, the portion above the step plates 513 and 514 (the part above the human eye) as compared with the portion below the step plates 513 and 514 (the portion that is hard to see). Since the portion that is easily attached) is larger, it is necessary to fix the portion above the step plates 513 and 514 to the wall body 2.

FIG. 11 is an exploded perspective view of the upper plate 62. FIG. 11 shows the upper end portion of the upper plate 62. The portion with the pointillism shown in FIG. 11 is the surface to be decorated.
The upper end portion of the upper plate 62 is fixed to the wall body 2 with a plurality of fixing members. In this embodiment, two countersunk screws 627 and 627 are used as a plurality of fixing members.

A recess 628 is previously provided at the upper end of the surface of the upper plate 62. Two pilot holes 629 and 629 are arranged side by side in the left-right direction on the inner surface of the recess 628.
Each countersunk screw 627 penetrates the prepared hole 629 and fixes the upper end portion of the upper plate 62 to the wall body 2.
After fixing the upper plate 62 with the countersunk screws 627 and 627, the concave portion 628 is covered with the decorative member 620. As a result, the recess 628 and the countersunk screws 627,627 are blindfolded.
The fixing member is not limited to the countersunk screw 627, and may be, for example, a nail.

In the present embodiment, the recess 628 has a rectangular shape extending over the tip surface 62b of the blindfold portion 625, the left end surface 62c of the upper plate 62, and the upper end surface of the upper plate 62. The decorative member 620 has a rectangular plate shape that is long in one direction, and at least one surface of the decorative member 620, both end faces in the longitudinal direction, and one end surface in the lateral direction are decorated. In the decorative member 620, one surface to be decorated is flush with the surface of the upper plate 62, and the three decorative end surfaces are the tip surface 62b of the blindfold portion 625, the left end surface 62c of the upper plate 62, and the upper plate 62. It is fitted into the recess 628 so as to be flush with the upper end surface of the. The decorative member 620 is adhered to the inner surface of the recess 628.

The upper end surface of the upper plate 62 may be a non-decorative surface. In this case, the decorative member 620 is a member having an L-shaped cross section, and is fitted into the recess 628 so as to cover the upper end surface of the upper plate 62.
Alternatively, the recess 628 may have a groove shape extending in the left-right direction.
Alternatively, the recess 628 may extend in the vertical direction and may have a groove shape extending over the upper end surface of the upper plate 62. In this case, two pilot holes 629 and 629 are arranged side by side in the vertical direction on the inner surface of the recess 628.

In the case of the staircase device 1 as described above, after the step plate 511 and the step plate 514 are arranged at the two corners of the wall body 2, the lower plate 61 and the upper plate 62 that support the step plate 511 and the step plate 514 Is attached to the end face 21 of the wall body 2.
That is, since the step plate 511 is arranged at the left corner of the wall body 2 before the lower plate 61 is attached to the end surface 21 of the wall body 2, the lower plate 61 interferes with the step plate 511 when the step plate 511 is arranged. There is no such thing. Similarly, since the step plate 514 is arranged at the right corner of the wall body 2 before the upper plate 62 is attached to the end surface 21 of the wall body 2, the upper plate 62 interferes with the step plate 514 when the step plate 514 is arranged. There is nothing to do.

The lower plate 61 and the step plate 511 are arranged on the lower floor side, and the upper plate 62 and the step plate 514 are arranged on the upper floor side. Therefore, there is no possibility that the lower plate 61 and the step plate 511 and the upper plate 62 and the step plate 514 interfere with each other. Therefore, since either the arrangement of the step plate 511 or the arrangement of the step plate 514 may be executed first, the degree of freedom in the assembly procedure of the staircase device 1 is high.

Since neither the step plate 512 nor the step plate 513 is a step plate arranged at the corner of the wall body 2, there is no particular problem, and there is no particular problem. It can be inserted into 611,621 from the right side. Further, since the step plates 511 to 514 are arranged in different stages, there is no possibility that the step plates 511 to 514 interfere with each other. Therefore, since either the arrangement of the step plate 512 or the arrangement of the step plate 513 may be executed first, the degree of freedom in the assembly procedure of the staircase device 1 is high.

The lower plate 61 supports the step plate 511 and the step plate 512, and the upper plate 62 supports the step plate 513 and the step plate 514. That is, since it is not necessary to use individual side plates for each of the step plates 511 to 514, an increase in the number of parts is suppressed. Further, since the number of side plates attached to the end surface 21 of the wall body 2 is 2, the increase in work man-hours is suppressed.
Since the lower plate 61 has a lateral groove 611 into which the step plate 512 is inserted and does not have a notch into which the step plate 512 is inserted, the strength of the lower plate 61 is high. Similarly, since the upper plate 62 has a lateral groove 621 into which the step plate 514 is inserted and does not have a notch into which the step plate 514 is inserted, the strength of the upper plate 62 is high.

Since the side plate 31 that supports the step plate 511 together with the lower side plate 61 constitutes the straight staircase 3 on the lower floor side, the number of members can be reduced.
Since the side plate 31 is attached after the step plate 511 is arranged, it does not interfere with the step plate 511. Further, since the side plate 31 is attached to the left surface 22, it does not interfere with the step plate 514.
Since either the lower plate 61 or the side plate 31 may be attached first, the degree of freedom in the assembly procedure of the staircase device 1 is high.

Since the mounting table 63 is attached after the step plate 514 is arranged, it does not interfere with the step plate 514. Further, since the mounting table 63 is attached to the right surface 23, it does not interfere with the step plate 511.
Since either the upper plate 62 or the mounting table 63 may be attached first, the degree of freedom in the assembly procedure of the staircase device 1 is high.

When one of the upper plate 62 and the mounting table 63 is attached to the wall body 2 before the other, the other protruding portion (contact portion) is placed above or below the one protruding portion (contact portion) that is accurately positioned. If the contact is made from the side, accurate positioning of the other in the vertical direction can be easily performed.

The lower plate 61 and the upper plate 62 are attached to the end surface 21 of the wall body 2 so as to be in vertical contact with each other. Therefore, if one of the lower plate 61 and the upper plate 62 is accurately positioned, by bringing the other into contact with one, accurate positioning of the other in the vertical direction can be easily performed.
Further, in the lower plate 61 and the upper plate 62, the lower plate 61 and the upper plate 62 each have the end surface 21 of the wall body 2 so that the right end surface 61b and the right end surface 62a and the right surface 23 of the wall body 2 are flush with each other. Attached to. Therefore, accurate positioning of the lower plate 61 and the upper plate 62 in the left-right direction can be easily performed.
In addition, a portion that is flush with the left surface 22 of the wall body 2 may be provided on a part of the end surface of each of the lower plate 61 and the upper plate 62.

Since the countersunk screws 627 and 627 and the recess 628 for fixing the upper plate 62 to the wall body 2 by using the countersunk screws 627 and 627 are blindfolded by the decorative member 620, the aesthetic appearance of the staircase device 1 is improved. Can be done.
The decorated one side of the decorative member 620 is flush with the surface of the upper plate 62, and the three decorated end faces of the decorative member 620 are the tip surface 62b of the blindfold portion 625, the left end surface 62c of the upper plate 62, and the upper plate 62. It is flush with the upper end surface of the upper plate 62. Further, since the inner surface of the large recess 628 corresponding to the two countersunk screws 627 and 627 is covered with the decorative member 620, the inner surface of the small recess corresponding to the one countersunk screw 627 is covered with the decorative member. It is possible to reduce the discomfort caused by the use of the decorative member.

Embodiment 2.
The method of assembling the staircase device 1 and the staircase device 1 of the present embodiment has substantially the same configuration as the method of assembling the staircase device 1 and the staircase device 1 of the first embodiment. The method of assembling the staircase device 1 and the staircase device 1 of the present embodiment has substantially the same effect as the method of assembling the staircase device 1 and the staircase device 1 of the first embodiment. Hereinafter, the differences from the first embodiment will be described, and the same components as those of the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

FIG. 12 is a rear view showing the staircase device 1 according to the second embodiment. FIG. 12 shows the staircase device 1 in the vicinity of the end surface 21 of the wall body 2. FIG. 12 shows the side plates 31 and 41 of the straight stairs 3 and 4, the lower plate 61, the upper plate 62, and the mounting table 63. The hatched portion shown in FIG. 12 is a groove (horizontal groove 611, vertical groove 612, etc.).
A blindfold portion 614 is projected upward on the left half of the upper end surface of the lower plate 61. The blindfold portion 614 blindfolds the boundary portion between the lower end surface of the upper plate 62 and the upper end surface of the lower plate 61 from the left side.

When the upper plate 62 is attached after the lower plate 61 is attached, for example, the upper plate 62 is tilted so that the upper portion of the upper plate 62 is located on the left side of the lower portion of the upper plate 62, and the lower portion of the upper plate 62 is tilted. It is brought into contact with the upper end surface of the lower plate 61, and then the lower end surface of the upper plate 62 and the upper end surface of the lower plate 61 are brought into contact with each other. As a result, the upper plate 62 can be attached without being hindered by the blindfold portion 614.
The lower plate 61 may be attached after the upper plate 62 is attached. In this case, the lower plate 61 is once tilted.

Embodiment 3.
The method of assembling the staircase device 1 and the staircase device 1 of the present embodiment has substantially the same configuration as the method of assembling the staircase device 1 and the staircase device 1 of the second embodiment. The method of assembling the staircase device 1 and the staircase device 1 of the present embodiment has substantially the same effect as the method of assembling the staircase device 1 and the staircase device 1 of the second embodiment. Hereinafter, the differences from the second embodiment will be described, and the same components as those of the second embodiment are designated by the same reference numerals and the description thereof will be omitted.

FIG. 13 is a plan view showing the staircase device 1 according to the third embodiment.
FIG. 14 is a rear view showing the staircase device 1.
FIG. 15 is a side view showing various side plates included in the staircase device 1.
13 and 14 show the staircase device 1 in the vicinity of the end face 21 of the wall body 2. FIG. 14 shows the side plates 31, 41, the lower side plate 61, and the upper side plate 62 of the straight stairs 3 and 4, and the lower auxiliary side plate 64 and the upper auxiliary side plate 65, which will be described later. FIG. 15 shows the surfaces of various side plates. The hatched portions shown in FIGS. 14 and 15 are grooves (horizontal groove 611, vertical groove 612, etc.).

FIG. 16 is a side view for explaining a procedure for attaching the lower auxiliary side plate 64 and the side plate 31 of the straight staircase 3 on the lower floor side to the wall body 2.
FIG. 17 is a side view for explaining a procedure for attaching the upper auxiliary side plate 65 and the side plate 41 of the straight staircase 4 on the upper floor side to the wall body 2.

In the present embodiment, the rear end surface 31a and the upper end surface 31b are provided at the upper end portion of the side plate 31 in the longitudinal direction. The upper end surface 31b is parallel to the floor surface, and the rear end surface 31a is located on the front side of the end surface 21 of the wall body 2. The rear end surface 31a and the upper end surface 31b are continuous.

The round staircase 5 is configured to rotate 180 ° in 6 steps at equal intervals. The round staircase 5 includes a side plate 50, six step plates 530 to 535, six riser plates 540 to 545, a lower plate 61, an upper plate 62, a lower auxiliary side plate 64, and an upper auxiliary side plate 65.
The step plates 531 to 534 are first to fourth step plates. The step plate 530 is a fifth step plate, and the step plate 535 is a sixth step plate. The step plates 530 to 535 are arranged at equal intervals of 30 ° in a plane view arc.

The step plate 530 is adjacent to the upper floor side of the uppermost step plate 33 in the straight staircase 3 on the lower floor side. The direction of the nose of the step plate 530 and the direction of the nose of the step plate 33 are the same.
The step plate 531 is adjacent to the upper floor side of the step plate 530. The cutout portion of the step plate 531 is along the left corner portion of the wall body 2. The angle from the nose of the step plate 530 to the step nose of the step plate 531 is 30 °.
The step plate 532 is adjacent to the upper floor side of the step plate 531. The angle from the nose of the step plate 530 to the step nose of the step plate 532 is 60 °.

The step plate 533 is adjacent to the upper floor side of the step plate 532. The angle from the nose of the step plate 530 to the step nose of the step plate 533 is 90 °.
The step plate 534 is adjacent to the upper floor side of the step plate 533. The cutout portion of the step plate 534 is along the right corner of the wall body 2. The angle from the nose of the step plate 530 to the step nose of the step plate 534 is 120 °.
The step plate 535 is adjacent to the upper floor side of the step plate 534. The angle from the nose of the step plate 530 to the step nose of the step plate 535 is 150 °. On the front end surface of the step plate 535, the lowermost riser plate 44 in the straight stairs 4 on the upper floor side is attached.
The angle from the step nose of the step plate 530 to the step nose of the lowermost step plate 43 in the straight staircase 4 on the upper floor side is 180 °.
The riser plates 540 to 545 are riser plates corresponding to the step plates 530 to 535.

On the lower floor side of the lateral groove 502 on the surface of the side plate 32, another lateral groove 502 and a continuous vertical groove near the front end portion of the lateral groove 502 are provided. On the upper floor side of the horizontal groove 503 on the surface of the side plate 42, another horizontal groove 503 and a continuous vertical groove near the front end portion of the horizontal groove 503 are provided.

The lower plate 61 of the present embodiment has a contact portion 615. The contact portion 615 is located below the notch 610 of the lower plate 61 and projects to the left beyond the left surface 22 of the wall body 2. Such a lower plate 61 can be formed by cutting out a corner portion on the lower left side (lower right side in the figure) of the lower plate 61 (see FIG. 12) of the second embodiment. The left end surface 61c of the lower plate 61 located below the contact portion 615 is flush with the left surface 22 of the wall body 2.
The lateral groove 611 of the lower plate 61 extends over the upper end surface of the lower plate 61.
The lower plate 61 does not have to have the extending portion 613 or the blinding portion 614.

The upper plate 62 of the present embodiment does not have a blindfold portion 625.
The lower end surface of the upper plate 62 functions as the upper surface of the lateral groove 611 of the lower plate 61 by contacting the upper end surface of the lower plate 61.

The lower auxiliary side plate 64 is a side plate facing the side plate 32.
The shape, dimensions, etc. of the lower auxiliary side plate 64 are substantially the same as the shape, dimensions, etc. of the member obtained by removing the portion provided with the horizontal groove 621 and the vertical groove 622 from the upper plate 62. The lower auxiliary side plate 64 has a notch 643, a flute 644, and a contact portion 646, which have substantially the same configuration as the notch 623, the flute groove 624, and the contact portion 626 of the upper plate 62. The rear end surface 64a of the lower auxiliary side plate 64 corresponds to the right end surface 62a of the upper plate 62.

The lower auxiliary side plate 64 extends in the vertical direction and is attached to the left surface 22 of the wall body 2 so that one surface of the lower auxiliary side plate 64 comes into contact with the left surface 22 of the wall body 2. Hereinafter, one surface / other surface of the lower auxiliary side plate 64 is referred to as a back surface / front surface of the lower auxiliary side plate 64.
The surface of the lower auxiliary side plate 64 is flush with the surface of the side plate 31 and the left end surface 61a of the lower plate 61. The rear end surface 64a of the lower auxiliary side plate 64 is flush with the end surface 21 of the wall body 2. The upper end surface of the lower auxiliary side plate 64 is flush with the tip surface of the blindfold portion 614 of the lower side plate 61.
The lower end surface of the lower auxiliary side plate 64 is in contact with the upper end surface 31b of the side plate 31, and functions as the upper surface of the lateral groove 601 of the side plate 31.

The notch 643 has an open rear side and is continuous with the notch 610 of the lower plate 61. The vertical groove 644 is continuous in the middle of the front-rear direction of the notch 643.
The contact portion 646 protrudes rearward beyond the end surface 21 of the wall body 2. The contact portion 646 is in contact with the contact portion 615 of the lower plate 61 from below.

The upper auxiliary side plate 65 is a side plate facing the side plate 42.
The shape and dimensions of the upper auxiliary side plate 65 are substantially the same as the shape and dimensions of the lower plate 61 of the present embodiment. Therefore, the number of parts can be reduced. The upper auxiliary side plate 65 has a notch 650, a lateral groove 651 (insertion groove), a vertical groove 652, an extension portion 653, a blindfold portion 654, and a contact portion 655, which are a notch 610 and a lateral groove 611 of the lower plate 61. , The vertical groove 612, the extension portion 613, the blindfold portion 614, and the contact portion 615 have substantially the same configuration. The rear end faces 65a and 65c of the upper auxiliary side plate 65 correspond to the left end faces 61a and 61c of the lower side plate 61. The upper auxiliary side plate 65 does not have to have the extending portion 653 or the blinding portion 654.

The upper auxiliary side plate 65 extends in the vertical direction and is attached to the right surface 23 of the wall body 2 so that one surface of the upper auxiliary side plate 65 comes into contact with the right surface 23 of the wall body 2. Hereinafter, one surface / other surface of the upper auxiliary side plate 65 is referred to as a back surface / front surface of the upper auxiliary side plate 65.
The surface of the upper auxiliary side plate 65 is flush with the surface of the side plate 41. The rear end surface 65a of the upper auxiliary side plate 65 is flush with the surface of the upper plate 62, and the rear end surface 65c is flush with the end surface 21 of the wall body 2.
The lateral groove 651 has an open front end portion and extends over the upper end surface of the upper auxiliary side plate 65. The upper end surface of the upper auxiliary side plate 65 is in contact with the lower end surface 41a of the side plate 41, and the lower end surface 41a functions as the upper surface of the lateral groove 651. The blindfold portion 654 blindfolds the boundary portion between the lower end surface 41a of the side plate 41 and the upper end surface of the upper auxiliary side plate 65.
The notch 650 has an open rear side and is continuous with the notch 623 of the upper plate 62.
The contact portion 655 is located below the notch 650 of the upper plate 62, and protrudes rearward beyond the end surface 21 of the wall body 2. The contact portion 655 is in contact with the contact portion 626 of the upper plate 62 from above.

Next, a method of assembling the staircase device 1 will be described.
First, the side plates 32, 50, 42 are attached to the wall surfaces 25, 24, and 26, for example, in this order (that is, in order from the lower floor side). Further, the side plate 31 is attached to the left surface 22 of the wall body 2 (see FIG. 16), and the side plate 41 is attached to the right surface 23 of the wall body 2 (see FIG. 17).

Next, the cutout portion of the step plate 531 is in contact with the left corner portion of the wall body 2, so that one surface of the step plate 531 faces upward and is horizontal, and the step plate 531 is placed on the wall body 2 and the side plates 32, 50. It is placed between and. Since the lower side plate 61 and the lower auxiliary side plate 64 are not yet attached to the wall body 2, there is a space between the wall body 2 and the side plates 32 and 50. Therefore, the step plate 531 can be arranged without any particular problem.
The step plate 531 is inserted into the lateral grooves 501 and 502 of the side plates 50 and 32 in a direction orthogonal to the side plates 32 and 50. As a result, a gap is formed between the cutout portion of the step plate 531 and the left corner portion of the wall body 2.

As shown in FIG. 16, the lower auxiliary side plate 64 is arranged on the front side of the step plate 531 so that the back surface of the lower auxiliary side plate 64 comes into contact with the left surface 22 of the wall body 2. Next, the lower auxiliary side plate 64 faces backward (leftward in FIG. 16) so that the lower end surface of the lower auxiliary side plate 64 contacts the upper end surface 31b of the side plate 31 and the step plate 531 is inserted into the notch 643 from the rear side. ), And when the rear end surface 64a is flush with the end surface 21 of the wall body 2, it is attached to the left surface 22 of the wall body 2. That is, the positioning of the lower auxiliary side plate 64 and the attachment of the wall body 2 to the left surface 22 are performed at the same time.

Next, the lower plate 61 is arranged on the right side of the step plate 531 so that the back surface of the lower plate 61 comes into contact with the end surface 21 of the wall body 2 (see FIG. 14). Next, the lower plate 61 is moved to the right in FIG. 14 so that the step plate 531 is inserted into the notch 610 from the left side, and the contact portion 615 contacts the contact portion 646 of the lower auxiliary side plate 64 from above. Moreover, when the left end surface 61c is flush with the left surface 22 of the wall body 2, it is attached to the end surface 21 of the wall body 2. That is, the positioning of the lower plate 61 and the attachment of the wall body 2 to the end surface 21 are performed at the same time.
The contact portions 615 and 646 of the lower side plate 61 and the lower auxiliary side plate 64 are blindfolded from above by the step plate 531. Further, the contact portions 615 and 646 are blindfolded by the user by the step plate 531 and the riser plate 541 described later.
After attaching the lower side plate 61 and the lower auxiliary side plate 64 to the wall body 2, the step plate 531 is attached to the lower side plate 61, the lower auxiliary side plate 64, and the side plates 32, 50.
The lower plate 61 may be attached before the lower auxiliary plate 64 is attached. Further, the side plate 31 may be attached after the step plate 531 is attached. After the side plates 31 and 32 are attached, the straight stairs 3 on the lower floor side can be assembled at any time.

Next, the cutout portion of the step plate 534 is in contact with the right corner portion of the wall body 2, so that one surface of the step plate 534 faces upward and is horizontal, and the step plate 534 is placed on the wall body 2 and the side plates 42, 50. It is placed between and. Since the upper plate 62 and the upper auxiliary side plate 65 have not yet been attached to the wall body 2, there is a space between the wall body 2 and the side plates 42 and 50. Therefore, the step plate 534 can be arranged without any particular problem.
The step plate 534 is inserted into the lateral grooves 501 and 503 of the side plates 50 and 42 in a direction orthogonal to the side plates 42 and 50. As a result, a gap is formed between the cutout portion of the step plate 534 and the right corner portion of the wall body 2.

Next, the upper plate 62 is arranged on the left side of the step plate 534 so that the back surface of the upper plate 62 comes into contact with the end surface 21 of the wall body 2 (see FIG. 14). Next, the upper plate 62 is moved so that the lower end surface of the upper plate 62 comes into contact with the upper end surface of the lower plate 61, the step plate 534 is inserted into the notch 623 from the right side, and the right end surface 62a is a wall body. When it is flush with the right surface 23 of 2, it is attached to the end surface 21 of the wall body 2. That is, the positioning of the upper plate 62 and the attachment of the wall body 2 to the end surface 21 are performed at the same time.

Next, the upper auxiliary side plate 65 is arranged on the front side of the step plate 534 so that the back surface of the upper auxiliary side plate 65 comes into contact with the right surface 23 of the wall body 2 (see FIG. 17). Next, in the upper auxiliary side plate 65, the upper end surface of the upper auxiliary side plate 65 contacts the lower end surface 41a of the side plate 41, the contact portion 655 contacts the contact portion 626 of the upper plate 62 from above, and the step plate 534 is cut. It is moved so as to be inserted into the notch 650 from the rear side, and is attached to the right surface 23 of the wall body 2 when the rear end surface 65c is flush with the end surface 21 of the wall body 2. That is, the positioning of the upper auxiliary side plate 65 and the attachment of the wall body 2 to the right surface 23 are performed at the same time.
The contact portions 626 and 655 of the upper plate 62 and the upper auxiliary side plate 65 are blindfolded from above by the step plate 534. Further, the contact portions 626 and 655 are blindfolded by the user by the step plate 534 and the riser plate 544 described later.
After attaching the upper plate 62 and the upper auxiliary side plate 65 to the wall body 2, the step plate 534 is attached to the upper plate 62, the upper auxiliary side plate 65, and the side plates 42, 50.
The upper plate 62 may be attached after the upper auxiliary side plate 65 is attached. Further, the side plate 41 may be attached after the step plate 534 is attached. After the side plates 41 and 42 are attached, the straight stairs 4 on the upper floor side can be assembled at any time.

Next, the step plate 530 is inserted into the lateral groove 601 of the side plate 31 and the lateral groove 502 of the side plate 32 from the rear side, and attached to the side plates 31 and 32.
Further, the step plate 532 is inserted into the lateral groove 611 of the lower plate 61 and the lateral groove 501 of the side plate 50 from the right side, respectively, and attached to the lower plate 61 and the side plate 50.
Further, the step plate 533 is inserted into the lateral groove 621 of the upper plate 62 and the lateral groove 501 of the side plate 50 from the right side, respectively, and attached to the upper plate 62 and the side plate 50.
Furthermore, the step plate 535 is inserted from the front side into the lateral groove 651 of the upper auxiliary side plate 65 and the lateral groove 503 of the side plate 42, respectively, and attached to the upper plate 62 and the side plate 50.

The riser plates 540 to 545 are attached in order from the upper floor side or the lower floor side after all the installation of the step plates 530 to 535 is completed. In addition, every time any one of the step plates 530 to 535 is attached, the corresponding riser plates 540 to 545 may be attached.

The riser plate 540 is inserted from the lower end into the vertical groove 602 of the side plate 31 and the vertical groove of the side plate 32, respectively, and is inserted into the groove of the step plate 530 from the lower side to form the step plate 530 and the straight staircase 3 on the lower floor side. It is attached to the uppermost step plate 33.
The riser plate 541 is inserted from the lower end into the vertical groove 644 of the lower auxiliary side plate 64 and the vertical groove of the side plate 32, respectively, is inserted into the groove of the step plate 531 from the lower side, and is attached to the step plates 530 and 531.
The riser plate 542 is inserted from the lower end into the vertical groove 612 of the lower plate 61 and the vertical groove of the side plate 50, respectively, is inserted into the groove of the step plate 532 from the lower side, and is attached to the step plates 531, 532.

The riser plate 543 is inserted from the lower end into the vertical groove 622 of the upper plate 62 and the vertical groove of the side plate 50, respectively, is inserted into the groove of the step plate 533 from the lower side, and is attached to the step plates 532 and 533.
The riser plate 544 is inserted from the lower end into the vertical groove 624 of the upper plate 62 and the vertical groove of the side plate 50, respectively, is inserted into the groove of the step plate 534 from the lower side, and is attached to the step plates 533 and 534.
The riser plate 545 is inserted from the lower end into the vertical groove 652 of the upper auxiliary side plate 65 and the vertical groove of the side plate 42, respectively, is inserted into the groove of the step plate 535 from the lower side, and is attached to the step plates 534 and 535.

As shown in FIG. 16, the lower auxiliary side plate 64 has a larger portion (a portion that is easily noticeable) above the step plates 530 and 531. Therefore, the upper end of the lower auxiliary side plate 64 is provided with a recess similar to the recess 628 of the upper plate 62, and the recess of the lower auxiliary side plate 64 is formed by a decorative member 640 similar to the decorative member 620 of the upper plate 62. It is covered. The lower auxiliary side plate 64 is fixed to the wall body 2 by a plurality of countersunk screws penetrating the inner surface of the recess of the lower auxiliary side plate 64.

In the case of the staircase device 1 as described above, the portion of the peripheral edge of the step plate 531 along the end surface 21 of the wall body 2 is supported by the lower plate 61, and the portion along the left surface 22 of the wall body 2 is supported by the lower auxiliary side plate 64. Be supported.
Since the lower auxiliary side plate 64 is attached after the step plate 531 is arranged, it does not interfere with the step plate 531. Further, since the lower auxiliary side plate 64 is attached to the left surface 22 of the wall body 2, it does not interfere with the step plate 534.
Since either the lower side plate 61 or the lower auxiliary side plate 64 may be attached first, the degree of freedom in the assembly procedure of the staircase device 1 is high.

The portion of the peripheral edge of the step plate 534 along the end surface 21 of the wall body 2 is supported by the upper plate 62, and the portion along the right surface 23 of the wall body 2 is supported by the upper auxiliary side plate 65.
Since the upper auxiliary side plate 65 is attached after the step plate 534 is arranged, it does not interfere with the step plate 534. Further, since the upper auxiliary side plate 65 is attached to the right surface 23 of the wall body 2, it does not interfere with the step plate 531.
Since either the upper plate 62 or the upper auxiliary side plate 65 may be attached first, the degree of freedom in the assembly procedure of the staircase device 1 is high.

Since the step plate 530 is not a step plate arranged at the corners, it can be inserted from the rear side into the lateral groove 601 of the side plate 31 attached to the left surface 22 of the wall body 2 without any particular problem. Similarly, since the step plate 535 is not a step plate arranged at the corners, it can be inserted from the front side into the lateral groove 651 of the upper auxiliary side plate 65 attached to the right surface 23 of the wall body 2 without any particular problem.
Since the step plate 530 is supported by the side plate 31 constituting the straight staircase 3 on the lower floor side, and the step plate 535 is supported by the upper auxiliary side plate 65, the number of members can be reduced.

Similar to the step plates 512 and 513 of the second embodiment, the step plates 532 and 533 are on the right side of the lateral grooves 611 and 621 of the lower plate 61 and the upper plate 62 attached to the end surface 21 of the wall body 2 without any particular problem. Can be inserted from.
Since the step plates 530 to 535 are arranged in different stages, there is no possibility that the step plates 530 to 535 interfere with each other. Therefore, since any of the step plates 530, 532, 533, and 535 may be arranged first, the degree of freedom in the assembly procedure of the staircase device 1 is high.

Embodiment 4.
The method of assembling the staircase device 1 and the staircase device 1 of the present embodiment has substantially the same configuration as the method of assembling the staircase device 1 and the staircase device 1 of the first embodiment. The method of assembling the staircase device 1 and the staircase device 1 of the present embodiment has substantially the same effect as the method of assembling the staircase device 1 and the staircase device 1 of the first embodiment. Hereinafter, the differences from the first embodiment will be described, and the same components as those of the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

FIG. 18 is a perspective view showing an upper plate 62 included in the staircase device 1 according to the fourth embodiment.
FIG. 19 is an exploded perspective view of the upper plate 62.
FIG. 20 is an exploded rear view of the upper plate 62.
FIG. 21 is an exploded side view of the upper plate 62.
The portion with the pointillism shown in FIGS. 18 to 21 is the surface to be decorated.

Also in this embodiment, the surface of the upper plate 62 is a decorative decorative surface. Further, the tip surface 62b of the blindfold portion 625 and the left end surface 62c of the upper plate 62 are each decorated.
The upper end surface 62d of the upper plate 62 is not decorated. The upper end surface 62d of the upper plate 62 is flat. A convex portion 66 is provided on the upper end surface 62d of the upper plate 62.

The convex portion 66 projects upward from the upper end surface 62d of the upper plate 62. Further, the convex portion 66 has a plate shape thinner than the upper plate 62. One surface 661 of the convex portion 66 is located on the front side (back surface side of the upper plate 62) from the front surface of the upper plate 62, and is orthogonal to the upper end surface 62d of the upper plate 62. The other surface 662 of the convex portion 66 is flush with the back surface of the upper plate 62. R-planes 663 and 663 are provided at both ends of the base of the convex portion 66 in the left-right direction. The left (right) R surface 663 is concave to the right (to the left). Each R surface 663 is smoothly continuous with the upper end surface 62d of the upper plate 62.
When the convex portion 66 is provided on the upper plate 62, for example, by cutting a plate material to be the upper plate 62 by using an end mill, the upper end surface 62d of the upper plate 62 is flattened and the upper end surface 62d of the upper plate 62 is convex. A portion 66 can be provided. At this time, the R surface 663,663 is formed at the base of the convex portion 66.

Two pilot holes 629 and 629 are arranged side by side in the left-right direction on one surface 661 of the convex portion 66. Each countersunk screw 627 penetrates the prepared hole 629 and fixes the upper end portion of the upper plate 62 to the wall body 2. The decorative member 67 covers the convex portion 66 and the upper end surface 62d of the upper plate 62.

The decorative member 67 has a rectangular plate shape that is long in the left-right direction. One side 671 of the decorative member 67, both end faces in the left-right direction, and the upper end face are each decorated.
Both ends of the other surface 672 of the decorative member 67 in the left-right direction are decorated. In the present embodiment, veneers 673 and 673 are attached to both ends of the other surface 672 in the left-right direction. The veneer 673 is a decorative plate thinner than the decorative member 67.
The lower end surface 674 of the decorative member 67 is flat. The length of the lower end surface 674 in the front-rear and left-right directions is the same as the length of the upper end surface 62d of the upper plate 62 in the front-back and left-right directions.
The decorative member 67 is provided with a recess 675. The recess 675 opens from the other surface 672 of the decorative member 67 to the lower end surface 674. The convex portion 66 is inserted into the concave portion 675 through an opening located in the lower end surface 674 of the concave portion 675, and contacts the wall body 2 through an opening located in the other surface 672 of the concave portion 675. are doing.

The decorative member 67 covers the convex portion 66 and the upper end surface 62d of the upper plate 62 so that the other surface 672 faces the end surface 21 of the wall body 2 and the lower end surface 674 faces the upper end surface 62d of the upper plate 62. .. The convex portion 66 is housed in the concave portion 675.

The length A1 of the convex portion 66 in the front-rear direction (thickness direction of the upper plate 62) is shorter than the length B1 of the concave portion 675 in the front-rear direction. The protrusion length A2 from the upper end surface 62d of the convex portion 66 is shorter than the opening length B2 in the vertical direction (longitudinal direction of the upper plate 62) of the concave portion 675. The length A3 of the convex portion 66 in the left-right direction (the lateral direction of the upper plate 62) is shorter than the opening length B3 in the left-right direction of the concave portion 675. Therefore, a gap is formed between the convex portion 66 and the inner surface of the concave portion 675.

When the upper plate 62 as described above is fixed to the wall body 2, pilot holes 629 and 629 are provided on one surface 661 of the convex portion 66 as shown in FIG. Each countersunk screw 627 penetrates the prepared hole 629 and fixes the upper end portion of the upper plate 62 to the wall body 2.
After fixing the upper plate 62 with the countersunk screws 627 and 627, the decorative member 67 has a convex portion such that the other surface 672 faces the end surface 21 of the wall body 2 and the lower end surface 674 faces the upper end surface 62d of the upper plate 62. It covers the upper end surface 62d of 66 and the upper plate 62. At this time, the convex portion 66 is accommodated in the concave portion 675. As a result, the convex portion 66, the upper end surface 62d of the upper plate 62, and the countersunk screws 627 and 627 are blindfolded, and the concave portion 675 of the decorative member 67 is blindfolded.

A gap is formed between the convex portion 66 and the inner surface of the concave portion 675.
Therefore, even if there is some dimensional error in the convex portion 66 or the concave portion 675, one surface 671 of the decorative member 67 is flush with the surface of the upper plate 62. Further, both end faces in the longitudinal direction of the decorative member 67 are flush with the left end surface 62c of the upper plate 62 and the tip surface 62b of the blindfold portion 625. Furthermore, the lower end surface 674 of the decorative member 67 comes into contact with the upper end surface 62d of the upper plate 62.
The gap between the convex portion 66 and the inner surface of the concave portion 675 is filled with, for example, an adhesive.

The lower end surface 674 of the decorative member 67 is adhered to the upper end surface 62d of the upper plate 62. Since the lower end surface 674 of the decorative member 67 and the upper end surface 62d of the upper plate 62 are flat, it is easy to bring them into contact with each other without a gap. Therefore, there is no possibility that an unnecessary gap is formed between the upper end surface 62d of the upper plate 62 and the decorative member 67.
Further, the other surface 672 of the decorative member 67 is adhered to the end surface 21 of the wall body 2.

The blindfolded portion 625 of the upper plate 62 and the right end portion of the decorative member 67 blindfold the rear end surface 41b of the side plate 41 (see FIGS. 2 and 4). The right end of the other surface 672 of the decorative member 67 may be visible due to a dimensional error of the upper plate 62 or the side plate 41, or a misalignment at the time of mounting. However, since this part is decorated with veneer 673, even if it is exposed to the public, there is no risk of spoiling the aesthetic appearance.
When the staircase device 1 is counterclockwise, the left end portion of the other surface 672 of the decorative member 67 may be visible for the same reason. However, since this part is decorated with veneer 673, even if it is exposed to the public, there is no risk of spoiling the aesthetic appearance.

That is, since the decorative member 67 is decorated on both ends in the left-right direction on the other surface 672, it can be applied to both the clockwise staircase device 1 and the counterclockwise staircase device 1.
Further, since the veneers 673 and 673 are attached to both ends of the decorative member 67 in the left-right direction, the thickness of the left end portion of the decorative member 67 including the veneer 673 and the thickness of the right end portion of the decorative member 67 including the veneer 673. And can be equal to each other. If one of the veneers 673 and 673 is omitted, the thickness of one end of the decorative member 67 in the left-right direction and the thickness of the other end of the decorative member 67 including the veneer 673 in the left-right direction are different from each other. When the decorative member 67 is attached, the position of the decorative member 67 tends to shift.

In order to match the maximum thickness of the decorative member 67 with the maximum thickness of the upper plate 62, it is desirable that a veneer 68 having the same thickness as the veneer 673 is attached to the back surface of the upper plate 62. However, since it is useless to attach the veneer 68 to the entire back surface of the upper plate 62, the veneers 68 and 68 are attached to the right end portion and the blindfold portion 625 on the back surface of the upper plate 62 as shown in FIG. It is desirable that it is.

According to the staircase device 1 as described above, the convex portion 66 for fixing the upper plate 62 to the wall body 2 by using the countersunk screws 627,627 and the countersunk screws 627,627, and the upper end surface 62d of the upper plate 62 Since the screws are blindfolded by the decorative member 67, the aesthetic appearance of the staircase device 1 can be improved.
One surface 671 of the decorative member 67 is flush with the surface of the upper plate 62, and both end faces in the longitudinal direction of the decorative member 67 are flush with the left end surface 62c of the upper plate 62 and the tip surface 62b of the blindfold portion 625. Further, the large convex portion 66 corresponding to the plurality of countersunk screws 627 and 627 is covered with the decorative member 67 together with the upper end surface 62d of the upper plate 62. Therefore, the discomfort caused by the use of the decorative member can be reduced as compared with the case where the inner surface of the small recess corresponding to one countersunk screw 627 is covered with the decorative member.

The shapes of the convex portion 66 and the concave portion 675 are not limited to those shown in FIGS. 19 to 21. For example, the convex portion 66 does not have to have R surfaces 663 and 663, and may have a shape that tapers in the protruding direction.
The peripheral edge of the upper end surface 62d of the upper plate 62 may be chamfered (for example, thread chamfered). In this case, the design can be improved by intentionally making the boundary portion between the upper end surface 62d of the upper plate 62 and the decorative member 67 stand out.

In the staircase device 1 of the third embodiment, the upper plate 62 may have a decorative member similar to the decorative member 67 instead of the decorative member 620. In this case, a convex portion similar to the convex portion 66 is provided on the upper end surface of the upper plate 62. Further, the lower auxiliary side plate 64 may have a decorative member similar to the decorative member 67 instead of the decorative member 640. In this case, a convex portion similar to the convex portion 66 is provided on the upper end surface of the lower auxiliary side plate 64.

The embodiments disclosed this time should be considered to be exemplary in all respects and not restrictive. The scope of the present invention is not intended to have the above-mentioned meaning, but is intended to include the meaning equivalent to the scope of claims and all modifications within the scope of claims.
The constituent requirements (technical features) disclosed in each embodiment can be combined with each other, and new technical features can be formed by the combination.

1 Staircase device 2 Wall body 21 End face 22 Left side (one side of the wall body)
23 Right side (other side of the wall)
3 Straight stairs (straight stairs on the lower floor)
31 Side plate 4 Straight stairs (straight stairs on the upper floor side)
5 round stairs 511 to 514,531 to 534 step boards (1st to 4th step boards)
530 step board (fifth step board)
535 step board (sixth step board)
601,611,621,651 Horizontal groove (insertion groove)
61 Lower plate (side plate)
610,623,643,650 Notch 615,626,631,646,655 Contact part (protruding part)
61b, 62a Right end face (face-to-face end face)
61c Left end face (parallel end face)
62 Upper plate (side plate)
620 Decorative member 627 Countersunk screw (fixing member)
628 Recessed 63 Mounting stand 64 Lower auxiliary side plate 65 Upper auxiliary side plate 66 Convex part 67 Decorative member 673 Veneer (decorative plate)
675 recess

Claims (8)

In the staircase device that folds back in a U shape along both sides and the end face of the wall body
The straight stairs on the lower floor along one side of the wall,
The straight stairs on the upper floor along the other side of the wall,
It is equipped with a rotating staircase that connects the straight staircase on the lower floor side and the straight staircase on the upper floor side.
The stairs around the stairs
A first step plate arranged at a corner between the end surface of the wall body and the one surface of the wall body, and
A second step plate arranged at a corner between the end surface of the wall body and the other surface of the wall body, and
With the third step board adjacent to the upper floor side of the first step board,
A fourth step plate adjacent to the upper floor side of the third step plate and the lower floor side of the second step plate,
The lower plate attached to the end face of the wall body and
With an upper plate attached to the end face of the wall body ,
The lower plate is
A notch provided on the peripheral edge of the lower plate so that a part of the peripheral edge of the first step plate is inserted so that the side of the wall body close to the one surface is opened.
A part of the peripheral edge of the third step plate is inserted, and is provided on the one surface so as to extend laterally along one surface of the lower plate, and is provided on the one surface of the wall body on the side close to the other surface. With an insertion groove with an open end
Have,
The other surface of the lower plate is attached to the end surface of the wall body so as to be in contact with the end surface of the wall body.
The upper plate is
A notch provided on the peripheral edge of the upper plate so that a part of the peripheral edge of the second step plate is inserted so that the side of the wall body close to the other surface is opened.
A part of the peripheral edge of the fourth step plate is inserted, and is provided on the one surface so as to extend laterally along one surface of the upper plate, and is provided on the one surface of the wall body on the side close to the other surface. With an insertion groove with an open end
Have,
Contact the lower plate from above and
The other surface of the upper plate is attached to the end surface of the wall body so as to be in contact with the end surface of the wall body.
The stairs around the stairs
A mounting table attached to the other surface of the wall body and on which the second step plate is mounted.
Have,
The mounting table and the upper plate each have contact portions that are in vertical contact with each other on the lower side of the second step plate.
The straight stairs on the lower floor side
A side plate attached to the one side of the wall so that one side is in contact with the one side of the wall.
Equipped with
The side plate is
Another part of the peripheral edge of the first step plate is inserted, and is provided on the other surface so as to extend laterally along the other surface of the side plate, and is close to the end surface of the wall body. The end on the side is open
A staircase device characterized by having an insertion groove . A recess is provided on one surface of the upper plate.
At least the portion of the one surface excluding the inner surface of the recess is decorated.
The upper plate is fixed to the wall body by a plurality of fixing members, each of which penetrates the inner surface of the recess.
Claim 1 is characterized in that a plate-shaped decorative member having a decorated surface covers the inner surface of the recess so that the decorated surface is flush with the one surface of the upper plate. The staircase device described in. The upper plate is long in the vertical direction
The one side of the upper plate is made up.
A convex portion protruding upward is provided on the upper end surface of the upper plate.
The upper plate is fixed to the wall body by a plurality of fixing members, each of which penetrates the convex portion.
The plate-shaped decorative member having a decorative one surface and a concave portion is such that the decorative one surface is flush with the one surface of the upper plate and the convex portion is accommodated in the concave portion. The staircase device according to claim 1 , wherein the portion and the upper end surface are covered. The staircase according to any one of claims 1 to 3 , wherein each of the lower plate and the upper plate has a flush end surface on one surface of the wall body or the other surface of the wall body. Device. The straight stairs on the lower floor along one side of the wall,
The straight stairs on the upper floor along the other side of the wall,
It is equipped with a rotating staircase that connects the straight staircase on the lower floor side and the straight staircase on the upper floor side.
In a method of assembling a staircase device that folds back in a U shape along the one side, the other side, and the end face of the wall body.
Prepare four step plates and a lower plate and an upper plate each provided with a notch and an insertion groove.
The first step plate of the four step plates is arranged at the corners of the end surface of the wall body and the one surface of the wall body.
After the arrangement of the first step plate, the lower plate is attached to the end surface of the wall body so that a part of the peripheral edge of the first step plate is inserted into the notch of the lower plate. ,
A second step plate out of the four step plates is arranged at a corner between the end surface of the wall body and the other surface of the wall body.
After the arrangement of the second step plate, the upper plate is attached to the end surface of the wall body so that a part of the peripheral edge of the second step plate is inserted into the notch of the upper plate. ,
After attaching the lower plate, a part of the peripheral edge of the third step plate among the four step plates is inserted into the insertion groove of the lower plate.
After attaching the upper plate, a part of the peripheral edge of the fourth step plate among the four step plates is inserted into the insertion groove of the upper plate.
The lower plate is
The notch provided on the peripheral edge of the lower plate so that one side in one direction along one surface of the lower plate is opened,
With the insertion groove provided on the one side of the lower plate so as to extend in the one direction and the other end in the one direction is open.
Have,
The upper plate is
The notch provided on the peripheral edge of the upper plate so that one side in one direction along one surface of the upper plate is opened,
With the insertion groove provided on the one surface of the upper plate so as to extend in the one direction and the one end of the one direction is open.
Have,
When the lower plate is attached to the end surface of the wall body, the other surface of the lower plate is brought into contact with the end surface of the wall body, and a part of the peripheral edge of the first step plate is made into the notch of the lower plate. Attaches the lower plate to the end face of the wall body so that the lower plate is inserted from the side close to the one side of the wall body.
When the upper plate is attached to the end surface of the wall body, the other surface of the upper plate is brought into contact with the end surface of the wall body, and a part of the peripheral edge of the second step plate is made into the notch of the upper plate. Is inserted from the side of the wall body close to the other surface, and the upper plate is attached to the end surface of the wall body.
When the lower plate or the upper plate is attached, the upper plate and the lower plate are brought into contact with each other in the vertical direction.
After attaching the lower plate, a part of the peripheral edge of the third step plate among the four step plates is inserted into the insertion groove of the lower plate from the side close to the other surface of the wall body.
After attaching the upper plate, a part of the peripheral edge of the fourth step plate among the four step plates is formed on the upper plate.
Insert it into the insertion groove of the side plate from the side of the wall body close to the other surface.
Prepare the mounting stand and the side plates that make up the straight stairs on the lower floor side.
The side plate is provided on one side of the side plate so as to extend in a direction along one side of the side plate, and has an insertion groove in which one end is open.
The above-mentioned stand and the upper plate each have a protrusion, and each of them has a protrusion.
When the upper plate is attached, the upper plate is mounted on the end surface of the wall body so that the protruding portion of the upper plate projects laterally along the end surface of the wall body over the other surface of the wall body. Attached to
After the arrangement of the second step plate, the second step plate is placed on the previously described pedestal, and the protruding portion of the previously described pedestal is laterally along the other surface of the wall body. The above-mentioned stand is attached to the other surface of the wall body so as to project beyond the end surface of the wall body.
At the time of mounting the above-mentioned pedestal or the upper plate, the protrusions of the above-mentioned pedestal and the upper plate are brought into vertical contact with each other on the lower side of the second step plate.
After the arrangement of the first step plate, the other surface of the side plate is brought into contact with the one surface of the wall body, and the other part of the peripheral edge of the first step plate is inserted into the insertion groove of the side plate. A method of assembling a staircase device, characterized in that the side plate is attached to the one side of the wall body so as to be inserted from the open end of the wall body . A recess is provided on one surface of the upper plate.
At least the portion of the one surface excluding the inner surface of the recess is decorated.
Prepare a plate-shaped decorative member with a decorative surface,
When the upper plate is attached to the end surface of the wall body, the upper plate is fixed to the wall body by the plurality of fixing members so that the plurality of fixing members each penetrate the inner surface of the recess. ,
The claim is characterized in that, after fixing the upper plate, the decorated surface of the decorative member is flush with the one surface of the upper plate, and the decorative member covers the inner surface of the recess. 5. The method for assembling the staircase device according to 5. The upper plate is long in one direction
The one side of the upper plate is made up.
A convex portion protruding in the longitudinal direction is provided on one end surface of the upper plate in the longitudinal direction.
Prepare a plate-shaped decorative member having a decorative surface and a recess,
When the upper plate is attached to the end surface of the wall body, the convex portion protrudes upward and the plurality of fixing members each penetrate the convex portion, and the plurality of fixing members form the upper plate. Is fixed to the wall body
After fixing the upper plate, the decorated one side of the decorative member becomes flush with the one surface of the upper plate, and the convex portion is accommodated in the concave portion, so that the convex portion is accommodated in the concave portion. The method for assembling the staircase device according to claim 5 , wherein the upper end surface of the upper plate is covered. Each of the lower plate and the upper plate has an end face for positioning.
When the lower plate and the upper plate are attached to the end surface of the wall body, the positioning end surface is made flush with the other surface of the wall body or the one surface of the wall body. The method for assembling a staircase device according to any one of claims 5 to 7 , wherein the lower plate and the upper plate are attached to the end surface of the wall body.

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