JP2006161428A - Staircase equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide staircase equipment which enables each treadboard to be horizontally mounted and fixed, even if an angle of inclination in the installation of an open string, set in a design stage, is different from an angle of inclination in the actual installation of it on a construction site, or even if the angle of inclination is changed. <P>SOLUTION: In this skeleton type staircase equipment wherein the plurality of treadboards 2 are each mounted on the open string 1 via a treadboard retainer 3, an undersurface side of each treadboard 2 is formed in such a manner as to have a convex round cross section; a retainer surface 3o of each treadboard retainer 3 is formed in such a concave round shape as to correspond to an convex round surface 5 on the undersurface side of the treadboard 2; and a part of the convex round surface 5 of each treadboard 2 is fixed by being engaged with the concave round retainer surface 3o of each treadboard retainer 3 in a slide-adjustable manner. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a skeleton-type staircase device in which a plurality of step plates are attached to a girder. A skeleton-type staircase is a type of staircase that does not have a kick plate and side girders, and is sometimes called a strip staircase or a see-through staircase.

  As a conventional skeleton type stair device, a publicly known document such as a patent publication cannot be specifically mentioned. However, in this type of stair device, a step plate engaging portion with which a rear end portion of a step plate is engaged is conventionally known. Are formed at a constant pitch on the eaves girder, and each step plate is engaged with the step plate engaging portion of the eaves beam and fixed with screws or the like.

  According to the conventional stair device as described above, the engaging portion for the step plate of the cross beam is formed based on the inclination angle of the cross beam set at the time of design. However, if the inclination angle is significantly different from the actual installation angle of the girder, or the inclination angle is changed, the level of the corrugated board will be out of order, and it will not be possible to install it horizontally. In this case, there was a problem that the girder had to be remanufactured.

  In view of the above problems, the present invention is different from the installation inclination angle of the girder set at the design stage from the inclination angle when actually installed at the construction site, or even when the inclination angle is changed, It is an object of the present invention to provide a stair device capable of horizontally mounting and fixing a step plate.

  Means for solving the above problems will be described with reference numerals of the embodiments described later. The invention according to claim 1 is that the plurality of step plates 2 are respectively attached to the eaves 1 via the step plate receiver 3. It is a skeleton-type stair device to be attached, wherein the lower surface side of each step plate 2 is formed in a convex rounded cross section, and the receiving surface 3o of each step plate receiver 3 is formed into a convex round shape on the lower surface side of the step plate 2 A concave round shape corresponding to the curved surface 5 is formed, and the convex round-shaped surface 5 portion of each step plate 2 is engaged with the concave round-shaped receiving surface 3o of each step plate receiver 3 so as to be slidably adjustable. It is characterized by being fixed.

  Claim 2 is the stairway device according to claim 1, wherein the upper and lower ends of the girder 1 are attached to the floor surface FW and the standing wall VW of the building to be installed, and the lower end surface 1b and the upper end surface 1a of the girder 1 Are formed on slopes that can contact the floor surface FW and the standing wall surface VW, respectively, and one mounting plate 13a of the L-shaped mounting bracket 13 composed of a pair of mounting plates 13a, 13b orthogonal to each other is fastened to the floor surface FW with screws 14. Then, the other mounting plate 13b is inserted into the lower end portion of the girder 1 and screwed to the inner wall surface thereof, and one mounting plate 13a of the L-shaped mounting bracket 13 is similarly screwed to the standing wall surface VW by screws 14, The other mounting plate 13b is inserted into the upper end of the girder 1 and is screwed to the inner wall surface.

  According to a third aspect of the present invention, in the stairway device according to the first or second aspect, a column member 8 having a circular cross section including a horizontal mounting portion 8b and a column main body portion 8a extending vertically from the end is required along the eaves girder. Arranged at intervals, the horizontal mounting portion 8b of each column member 8 is rotatably fitted and fixed to an arc-shaped receiving portion 10 formed on the upper side surface portion of the corrugated plate receiver 3, and the column main body portion 8a is fixed. A handrail 4 is installed by pivotally attaching to a handrail rod 9.

  The effect of the invention by the above solution will be described with reference numerals of embodiments to be described later. According to the invention according to claim 1, the lower surface side of each step plate 2 is formed in a convex rounded cross section. At the same time, the receiving surface 3 o of the step plate receiver 3 is formed in a concave round shape corresponding to the convex round shape surface 5 on the lower side of the step plate, and the convex round shape surface 5 of each step plate 2 is formed on the step plate receiver 3. Since the concave round-shaped receiving surface 3o is engaged and fixed so as to be slidable, when the inclination angle of the eaves 1 is changed, the receiving surface 3o of the step plate receiving 3 is set to the step plate 2 The corrugated plate 2 can be set to a horizontal state by sliding it appropriately with respect to the convex rounded surface 5 on the lower surface side, and the installation inclination angle of the girder set at the design stage is the inclination when actually installed at the construction site When the angle is different, the convex shape on the lower surface side of the corrugated plate 2 so that the corrugated plate 2 is horizontal. The Lumpur shaped surface 5 slide relative to the receiving surface 3o stage plate receiving 3, the stage plate 2 may be fixed to the stage plate receiving 3 at tread 2a becomes horizontal. Therefore, each step board 2 can be always mounted and fixed horizontally.

  According to the invention which concerns on Claim 2, even if the installation inclination | tilt angle (theta) of the girder 1 is changed, according to the change angle, the upper-lower-end surfaces 1a and 1b of the girder 1 are set to the standing wall surface VW and the floor surface FW, respectively. It can be accurately attached in a contact state.

  According to the invention according to claim 3, when the installation inclination angle θ of the girder 1 set in the design stage is different from the inclination angle when actually installed at the construction site, or the inclination angle θ is changed However, the horizontal mounting portion 8b of each column member 8 is appropriately rotated and adjusted by the arc-shaped receiving portion 10 of the corrugated plate receiver 3, and then fixed to the screws 11, so that each column main body portion 8a has a vertical posture. The support member 8 can be erected. Moreover, since the upper end part of each support | pillar main-body part 8a is pivotally attached to the handrail rod 9, it can respond easily to the change of the installation inclination angle (theta) of the girder 1.

  A preferred embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a side view of the stair device according to the present invention, FIG. 2 is a front view of the stair device, and FIG. 4 is a partially enlarged perspective view of the staircase device, FIG. 5 is an enlarged view of a portion indicated by an arrow A in FIG. 1, and FIG. 6 is a side view showing the operation of the main part of the present invention. 7 (a) is a side view showing the installation state of the girder, (b) is a front view of the installation state, (c) is a plan view of the installation state, and (d) is a cross-sectional view of the girder. It is. This stair device is a skeleton type stair device in which a plurality of step plates 2 are respectively attached to a stringer 1 and 1 arranged in two rows via a step plate receiver 3, and a handrail is provided on one side of the staircase. 4 is installed.

  The spatula 1 is made of an aluminum extruded cylindrical member having a substantially rectangular cross section as shown in FIG. 7 (d), or a square steel pipe (square pipe) as shown in FIG. 7 (e). As shown in FIG. 1, when attaching the upper and lower ends of the girder 1 to the standing wall VW and the floor FW of the building to be installed, the inclination angle θ with the floor FW is set to 45 °, for example. In this case, the upper end surface 1a and the lower end surface 1b of the girder 1 are formed on 45 ° slopes that can come into close contact with the standing wall surface VW and the floor surface FW, respectively.

  Each step board 2 is made of, for example, a laminated material of wood, and the upper surface forms a tread surface 2a having a horizontal surface, and the lower surface side is formed in a convex rounded cross section as can be seen from FIGS. Has been. This convex rounded surface is denoted by reference numeral 5. Each of the corrugated plate receivers 3 is made of, for example, an aluminum extruded shape or casting, and as can be seen from FIG. 5, a substantially T-shaped receiving portion main body 3a having a receiving surface 3o formed on the upper surface, and the receiving portion main body. 3a, and the receiving surface 3o of the receiving portion main body 3a is formed in a concave round shape corresponding to the convex rounded surface 5 on the lower surface side of the step plate 2. In this state, the lower platen-shaped convex surface 5 of each step plate 2 is appropriately engaged so as to be slidable, and the step plate 2 is held and fixed by screws 6 in this engaged state. . In addition, when the mounting leg portion 3b of each corrugated plate receiver 3 is fixed to the upper end surface of the cross beam 1 with screws 7, or when the corrugated plate receiver 3 is formed of a cast metal and the cross plate 1 is formed of a steel pipe, Both are fixed by welding.

  The handrail 4 is composed of a plurality of support members 8 arranged at required intervals along the eaves 1 and handrails 9 that connect the upper ends of these support members 8. As shown in FIGS. 3, 4 and 5, each support member 8 is made of a metal round pipe material, and includes a horizontal mounting portion 8 b and a support main body portion 8 a extending vertically from one end thereof. Each horizontal mounting portion 8 b is formed in a letter shape, and is rotatably fitted to an arc-shaped receiving portion 10 formed on the upper side surface portion of the corrugated plate receiver 3 and fixed by screws 11. . The upper end portion of the column main body 8 a of each column member 8 is pivotally attached to the handrail 9. In FIG. 1, reference numeral 12 denotes a strut reinforcing material that connects the strut body portions 8 a and 8 a facing each other of the strut members 8 and 8 adjacent to each other.

  When this stair device is installed across the standing wall VW and the floor FW of the building as shown in FIG. 1, the upper end surface 1a and the lower end surface 1b of the girder 1 are respectively used as the standing wall VW and the floor FW. It is formed on a slope that can be contacted. That is, in this case, if the inclination angle θ of the cross beam 1 with respect to the floor surface FW is set to 45 °, for example, the upper end surface 1a and the lower end surface 1b of the cross beam 1 are obliquely cut at 45 °. Slope. Thus, as shown in FIGS. 7 (a) to 7 (c), the upper and lower slopes 1a, 1b of the girder 1 are in contact with the standing wall VW and the floor FW, respectively, and the L-shaped mounting bracket 13, respectively. 13 is attached and fixed to the standing wall surface VW and the floor surface FW by screws 14.

  As shown in FIG. 8, the L-shaped mounting bracket 13 is composed of a pair of mounting plates 13a and 13b orthogonal to each other, and one mounting plate 13a is brought into contact with the standing wall surface VW or the floor surface FW and screwed. It is to be stopped, is formed in a rectangular shape, is provided with a screw insertion hole 13d, and the other mounting plate 13b is formed in a parallelogram shape so as to be inserted into the end portion of the cross beam 1. A plurality of screw insertion holes (not shown) are provided, and a nut 13c is fixed concentrically with the screw insertion hole on the back side thereof.

  In order to attach the upper and lower ends of the girder 1 to the standing wall VW and the floor FW using the L-shaped mounting bracket 13, first, the lower end of the girder 1 is attached to the floor FW and then the upper end thereof. Is attached to the vertical wall VW. When attaching the lower end of the girder 1 to the floor surface FW, one mounting plate 13a of the L-shaped mounting bracket 13 is brought into contact with a required position of the floor surface FW, and the screw 14 is inserted into the floor surface FW through the screw hole 13d. After screwing in and fixing, the other mounting plate 13b is inserted into the lower end of the girder 1 and applied to the inner wall surface, and a screw insertion hole (not shown) provided at a required position of the lower end of the eaves 1 Then, the screw 14 is screwed into the nut 13c of the mounting plate 13a, and the mounting plate 13a is fixed to the side beam 1 side. Thereafter, the upper end portion of the girder 1 is attached to the standing wall surface VW by the same L-shaped mounting bracket 13. That is, one mounting plate 13a of the L-shaped mounting bracket 13 is brought into contact with a required position of the standing wall surface VW, and the screw 14 is screwed and fixed to the standing wall surface VW through the screw hole 13d, and then the other mounting plate 13b is fixed. It is inserted into the upper end of the spatula 1 and applied to the inner wall surface thereof, and a screw 14 is screwed into a nut 13c of the mounting plate 13a from a screw insertion hole (not shown) provided at a required position of the upper end of the spatula 1 What is necessary is just to fix the attachment plate 13a to the stringer 1 side. The mounting plate 13a of the L-shaped mounting bracket 13 is formed in such a size that it can be moved to the left and right and back and forth with a certain margin in a state where it is inserted into the upper and lower ends of the girder 1 and brought into contact with its inner wall surface. ing.

  If this L-shaped mounting bracket 13 is used, even if the installation angle of the girder 1, that is, the inclination angle θ of the girder 1 with respect to the floor FW is changed from 45 ° to 50 °, for example, due to the convenience of the installation site, According to the change angle, the upper and lower end surfaces 1a and 1b of the girder 1 can be accurately attached in a state where they are in contact with the standing wall surface VW and the floor surface FW, respectively. That is, in this case, the upper end surface 1a and the lower end surface 1b of the eaves girder 1 are respectively formed on a slope of 50 °, and the mounting plate 13b of the L-shaped mounting bracket 13 inserted into the upper and lower ends of the eaves beam 1 and the eaves What is necessary is just to adjust the screw stop position with the edge part of the beam 1 suitably.

  If the upper and lower ends of each of the two girder beams 1 and 1 are attached and fixed to the standing wall surface VW and the floor surface FW via the L-shaped mounting brackets 13 and 13 as described above, the step plate 2 is placed on the lower side, for example. From the upper side to the upper side, the girder 1 is sequentially attached via the corrugated plate support 3. In attaching the step plate 2, as shown in FIG. 5, the mounting leg portion 3 b of the step plate holder 3 is placed at a required position on the upper side surface 1 c of the girder 1 and fixed by screws 7 or welding, While the convex round-shaped surface 5 of the step plate 2 is engaged with the receiving surface 3o of the receiving portion main body 3a and appropriately slided, the tread surface 2a that is the upper surface of the step plate 2 is horizontal and the receiving portion main body The step plate 2 is fixed to the step plate receiver 3 by screwing the screw 6 into the step plate 2 through the screw insertion hole 15 on the 3a side. By fixing each step plate 2 to the step plate receiver 3 in this way, each step plate 2 can be mounted horizontally (in a state where the tread surface 2a is horizontal) with respect to the eaves 1.

  FIG. 6 shows a state in which the corrugated board 2 can be mounted horizontally with respect to the girder 1 even if the inclination angle of the girder 1 with respect to the floor FW is changed from θ1 to θ2 or θ3. That is, as described above, the lower surface side of the step plate 2 is formed in a convex rounded shape in cross section, and the receiving surface 3o of the step plate receiver 3 is a concave shape corresponding to the convex rounded surface 5 on the lower surface side of the step plate. Since it is formed in a round shape and the convex round-shaped surface 5 of the step plate 2 is slidably engaged with the concave round-shaped receiving surface 3o of the step plate receiver 3, it is shown by a solid line. When the inclination angle of the girder 1 is changed from θ1 to θ2 (<θ1) from the state where the tread surface 2a on the upper surface of the step plate 2 is horizontal when the inclination angle of the beam 1 is θ1, FIG. By sliding the receiving surface 3o of the step plate receiver 3 in one direction along the convex round-shaped surface 5 on the lower surface side of the step plate 2, the step plate 2 has a tilt angle of θ1. Similarly, the horizontal state can be maintained, and the inclination angle of the beam 1 is changed from θ1 to θ3 (> θ1). In this case, as shown by the two-dot chain line in the figure, the receiving surface 3o of the step plate receiver 3 is slid along the convex rounded surface 5 on the lower surface side of the step plate 2 in the opposite direction to the case of θ2. The step plate 2 can maintain the horizontal state as in the case of θ1 and θ2.

  In addition, in FIG. 6, although the case where the inclination angle of the cross beam 1 was changed was illustrated, the installation inclination angle of the cross beam set in the design stage is different from the inclination angle when actually installed at the construction site. In this case, as described above, the lower surface side convex rounded surface 5 of the step plate 2 is appropriately slid with respect to the receiving surface 3o of the step plate receiver 3 so that the step surface 2a of the step plate 2 is horizontal, The step plate 2 may be fixed to the step plate receiver 3 at a position where the surface 2a is horizontal.

  Next, the case where the handrail 4 is installed will be described. As shown in FIG. 5, the horizontal mounting portion 8 b of each column member 8 is fitted into the arc-shaped receiving portion 10 formed on the upper side surface portion of the stepped plate receiving 3. Then, while appropriately rotating, the screw 11 is inserted into the horizontal mounting portion 8b from the screw insertion hole 16 (see FIG. 5) of the receiving portion main body 3a in a position in which the column main body portion 8a is perpendicular to the horizontal plane, that is, a vertical posture. The horizontal mounting portion 8b is fixed to the receiving portion main body 3a by screwing, and each column member 8 is erected, and the column body portions 8a, 8a facing each other of the adjacent column members 8, 8 are supported by the column reinforcing member 12. Link.

  Thereafter, the upper end of the column main body 8a of each column member 8 is pivotally attached to a series of handrail rods 9, whereby the installation of the handrail 4 is completed. When pivotally attaching the upper end of the column main body 8a to the handrail rod 9, as shown in FIG. 9, a pivot bracket 17 is attached to the upper end of each column main body 8a, and the lower surface side required portion of the handrail rod 9 is attached. Pivoting brackets 18 are attached at required intervals, and the pivoting brackets 17 on the side of each column main body 8a are engaged with the pivoting brackets 18 on the handrail 9 side so that both brackets 17 and 18 are pivoted. The bolt 19 may be passed through and a nut (not shown) may be tightened.

  According to the handrail 4 described above, each column member 8 is made of a metal round pipe material (having a circular cross section), and includes a horizontal mounting portion 8b and a column main body portion 8a extending vertically from one end portion thereof. Since it is formed in an L shape, the horizontal mounting portion 8b is rotatably fitted to an arcuate receiving portion 10 formed on the upper side surface portion of the stepped plate receiver 3 and is fixed by a screw 11. Even when the installation inclination angle θ of the girder 1 set at the design stage is different from the inclination angle when actually installed at the construction site, or even when the inclination angle θ is changed, In a state where the mounting portion 8b is fitted to the arc-shaped receiving portion 10 of the stepped plate receiver 3, the column main body portion 8a indicated by the phantom line in FIG. By fixing the screws 11, each column main body 8a becomes a vertical posture. Each strut member 8 can be erected in such a manner. Moreover, since the upper end part of each support | pillar main-body part 8a is pivotally attached to the handrail rod 9, it can respond easily to the change of the installation inclination angle (theta) of the girder 1.

  In the stair device of the above embodiment, the girder 1 is arranged in two rows, but the girder 1 may be three or more rows, and if the width is relatively wide, a single one is used. It can also be used. Further, in this embodiment, the handrail 4 is installed on one side of the staircase, and for this purpose, each column member 8 is formed in an L shape by the column main body portion 8a and the horizontal mounting portion 8b. May be installed on both sides of the staircase, in which case each column member 8 is connected to a pair of column main body portions 8a and 8a on both sides and a horizontal mounting portion 8b connecting the lower end portions of both column main body portions 8a and 8a. It is sufficient to form an upward U-shape.

It is a side view of the stair device concerning the present invention. It is a front view of the staircase device. FIG. 3 is a partially enlarged view of FIG. 2. It is a partially expanded perspective view of the staircase device. It is an enlarged view of the part shown by the arrow a of FIG. It is a side view which shows the effect | action of the principal part of this invention. (a) is a side view showing the installation state of the girder, (b) is a front view of the installation state, (c) is a plan view of the installation state, (d) is a cross-sectional view of the cross beam, (e) FIG. 6 is a cross-sectional view of another embodiment of a girder. (a) is a front view of an L-shaped mounting bracket, (b) is a side view, and (c) is a plan view. It is an enlarged view of the part shown by the arrow a of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Girder 2 Corrugated plate 3 Corrugated plate receiver 3o Receiving surface 4 Handrail 5 Convex round-shaped surface 6 and 7 screw on the lower surface side of corrugated plate Screw 8 Handrail column member 8a Column body portion 8b Horizontal mounting portion 9 Handrail rod 10 steps Arc-shaped receiving portion 11 provided on the plate support 11 Screw 13 L-shaped mounting bracket 13a Mounting plate 13b Mounting plate 14 Screw

Claims (3)

It is a skeleton type stair device in which a plurality of step plates are attached to a saddle girder via a step plate holder,
The bottom surface side of each step plate is formed in a convex round shape in cross section, and the receiving surface of each step plate receiver is formed in a concave round shape corresponding to the convex round shape surface on the bottom surface side of each step plate. The convex round-shaped surface portion of each of the stepped plate holders is fixed by engaging with the concave round-shaped receiving surface of each step plate holder so as to be slidable.   When attaching the upper and lower ends of the girder to the floor and vertical wall of the building to be installed, the lower and upper surfaces of the girder are formed into slopes that can contact the floor and the vertical wall, respectively, and a pair orthogonal to each other One mounting plate of the L-shaped mounting bracket consisting of the mounting plate is screwed to the floor, the other mounting plate is inserted into the lower end of the girder and screwed to the inner wall surface, and the same L-shaped mounting bracket The staircase according to claim 1, wherein one of the mounting plates is screwed to the standing wall and the other mounting plate is inserted into the upper end of the girder and screwed to the inner wall. apparatus. Column members with a circular cross section consisting of a horizontal mounting portion and a column main body portion extending perpendicularly from the end of the horizontal mounting portion are arranged at required intervals along the eaves, and the horizontal mounting portion of each column member is placed on the corrugated plate support. 3. A handrail is installed by pivotally fitting and fixing to an arc-shaped receiving portion formed on a side surface portion, and pivotally attaching the column main body portion to a handrail rod. The staircase device described.

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