JP2013087606A - Fitting structure for staircase - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fitting structure for staircase that can easily fit a staircase body, constituted by fixing treadboards to stringers arranged to the right and left, to a building frame with good operability.SOLUTION: There is provided the fitting structure for staircase such that upper-end parts 11, 11 of stringers 1, 1 on both sides of a staircase body A comprising the stringers 1 arranged to the right and left and treadboards 2 fixed to the stringers 1 are fitted to a vertical plane of a building frame K connecting with an upper floor through a pair of staircase metal fixtures 3, 3. The staircase metal fixtures 3 are formed of a pair of holding pieces 31, 31 holding an upper-end part of a stringer 1 from both sides and connecting pieces connecting the holding pieces 31, 31 to each other so that the cross section is substantially in a channel shape, the pair of staircase metal fixtures 3, 3 are adjusted to a suitable interval in a horizontal direction and the connecting pieces 32, 32 are fixed to a vertical plane of the building frame K. The upper-end parts 11, 11 of the stringers 1, 1 are held and fixed with the holding pieces 31, 31 of the staircase metal fixtures 3, 3.

Description

  The present invention relates to a staircase mounting structure. More specifically, the present invention relates to a staircase mounting structure that can be applied to a so-called open-type staircase that includes a footboard and a side beam to which the footboard is attached, and has no kick board.

  A so-called open type staircase having no kick plate and having a side surface portion of the staircase that is open at a substantially right angle to the stair climbing direction is well known, and is often used in buildings and outdoor balconies. The raising and lowering part of the open type stairs is composed of a tread board and a side girder to which the tread board is attached, and the side girder is usually provided one by one on the left and right in the elevating direction of the stairs.

  For example, when each tread board and side girders constituting the open type stairs are made of a wooden material, the tread board and side girder are joined at the construction site by the height of the stairs, the horizontal dimension, the number of up and down steps. The left and right end portions of the tread plate calculated from the above are inserted into the side girders and fitted to each other.

  In addition, the upper and lower ends of the above-mentioned side girders are fixed to the structural material of the building, for example, the upper end is inserted into a receiving beam on the second floor, and the lower end is processed into the first floor. Then, it is performed by a method such as fixing.

  However, the above-mentioned conventional method needs to be inserted into the upper and lower ends of the above-mentioned side girders, and it is necessary to cut them for machining, and the same cutting process is also required for structural materials such as receiving beams and large shrinkage of buildings. In addition, there is a problem that it is complicated and troublesome because it is fixed with construction hardware such as bolts.

  In order to solve the above-mentioned problem, for example, Japanese Laid-Open Patent Publication No. 2006-249752 proposes an open type girder mounting structure. That is, as shown in FIG. 1 and FIG. 5 of the above publication, side girder clamping portions composed of an outer clamping plate and an inner clamping plate are paired with a holding plate, and two side girders are provided. A girder mounting structure is disclosed in which upper and lower end portions of the side girder are fixed by the side girder clamping portion, and the side girder is mounted and fixed at predetermined positions on a wall surface and a floor surface.

  And by installing the above-mentioned open stair girder mounting structure, it is not necessary to have advanced skills of craftsmen, and it is not necessary to dismantle floor finishing materials and wall finishing materials at the time of renovation, so construction is extremely easy The construction cost can be reduced, and an open stair girder mounting structure with excellent mounting accuracy and strength durability can be provided.

JP 2006-249752 A

  In the open-type stair girder mounting structure disclosed in Japanese Patent Application Laid-Open No. 2006-249752, a pair of side girder clamping portions are connected to each other by a holding plate. Therefore, as shown in FIG. Has two elongated holes in the width direction as attachment holes, and allows the holding plate to move in the width direction when attaching the girder of the open type staircase, and makes two adjustments in the right and left to make two adjustments at the optimum position. Side girders can be attached.

  However, even if two elongated holes in the width direction are provided as attachment holes in the holding plate, it is inferior in workability when constructing an open type staircase at the site, and the adjustment dimension is the length of the long hole. When exceeding, the problem that construction cannot be performed arises.

  The present invention has been made in view of such a situation, and it is possible to attach a staircase body, in which a step board is fixed to side girders arranged on the left and right sides, with good workability, and can be easily attached to a frame. Its purpose is to provide a structure.

  In order to solve the above-mentioned problems, a staircase mounting structure according to the invention described in claim 1 of the present invention is provided on both sides of a staircase body composed of side girders arranged on the left and right sides and a footboard fixed to the side girders. In a staircase mounting structure in which the upper end portion of the side beam is attached to the vertical surface of the frame connected to the upper floor via a pair of staircase fixing brackets, The holding piece and the connecting piece connecting the holding pieces are formed in a substantially U-shaped cross section, and the pair of stair fixing brackets are adjusted to an appropriate distance in the horizontal direction so that the connecting pieces are fixed to the vertical surface of the housing. And the upper end part of the said side beam is clamped with the clamping piece of each stair-fixing metal fitting, It is characterized by the above-mentioned.

  Here, the side girders include solid wood, laminated wood, LVL, wooden materials such as veneer, veneer resin sheet, decorative paper, etc., stainless steel, aluminum, painted steel plate, etc. Examples thereof include metal materials such as those obtained by attaching a resin sheet to an iron core, and other various materials.

  Further, as the stair fixing bracket itself, a metal material such as stainless steel, galvanized steel sheet, painted steel sheet, brass-plated steel sheet, or cast metal formed in a substantially U-shaped cross section is usually used.

  Further, a through-hole through which a fixing means such as a screw or a nail for fixing the side beam is penetrated in the holding piece constituting the stair fixing metal. The connecting piece for connecting the holding pieces is also provided with a through-hole through which fixing means such as screws and nails for fixing the stair fixing bracket to the vertical surface of the housing is passed.

  The staircase mounting structure according to the first aspect of the present invention is such that a pair of staircase fixing brackets for fixing the upper ends of the left and right side girders of the staircase main body formed by fixing the treads to the side girders are independent of the upper floor. Since it is fixed to the vertical surface of the frame that is connected to the frame, it is possible to appropriately correspond to the interval between the side beams arranged according to the mounting position of the tread plate. For this reason, when installing on-site, the staircase fixing bracket can be fixed to the vertical surface of the frame at the optimal position according to the mounting position of the upper ends of the left and right side girders. can do.

  In addition, even if the treadle is assembled to the side girders using the treadle mounting bracket in advance and the unitized staircase body is used, the staircase body is fixed to the housing with good workability corresponding to the tolerance of unitized products. be able to.

  The stairs fixing bracket is formed in a substantially U-shaped cross section with a pair of clamping pieces for clamping the upper end of the side beam from both sides and a connecting piece for connecting the holding pieces. By inserting a fixing means such as a tapping screw through the through-hole and fixing the fixing means to the casing, the stair fixing bracket can be firmly fixed to the vertical surface of the casing. In addition, since the upper ends of the side girders are pinched and fixed by the holding pieces of the respective stair fixing brackets, the stair body can be securely and easily attached to the housing without the side girders being loose.

(A) is a perspective view which shows the state which looked at the stair-fixing metal fitting which concerns on this invention from right front toward the raising / lowering direction of a staircase, (b) is a perspective view which shows the state which looked at the said stair-fixing metal fitting from the connection one side. The top view which shows the state which fixed the side beam to the said stair-fixing metal fitting. The partial side view which shows a part of staircase main body based on this invention which consists of a side beam and a footboard. The perspective view which shows a tread board assembly | attachment metal fitting. The partial cross section side view which shows the Example of the attachment structure of the staircase which concerns on this invention.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a staircase mounting structure according to the present invention will be described in detail with reference to the drawings. In this embodiment, solid wood is used as the side girders arranged on the left and right, and a thick galvanized steel plate formed in a substantially U-shaped cross section is used as the stair fixing bracket. The case where a laminated material is used as a footboard to be fixed will be described.

  Fig.1 (a) is a perspective view which shows the state which looked at the stair fixing fixture 3 which concerns on this invention from the front right toward the raising / lowering direction of a staircase. As shown in FIG. 1 (a), the above-mentioned staircase fixing bracket 3 has a cross-sectional substantially cross-sectional shape composed of two sandwiching pieces 31 for sandwiching the upper end portion of a side beam, which will be described later, from both sides, and a connecting piece 32 for connecting the sandwiching pieces 31. It is formed in a letter shape. Each clamping piece 31 is provided with two through holes 311 through which fixing means such as tapping screws are inserted.

  FIG.1 (b) is a perspective view which shows the state which looked at the said stair-fixing metal fitting 3 from the connection piece 32 side. As shown in FIG. 1 (b), the connecting piece 32 is fixed to the connecting piece 32 with a tapping screw or the like for fixing the step fixing metal fitting 3 to the vertical surface of the outer casing as shown in FIG. 1 (a). Two through holes 321 through which the means are inserted are provided.

  FIG. 2 is a plan view showing a state in which the two side stair brackets 3 are fixed to the housing K at appropriate intervals in the horizontal direction and the side beam 1 is fixed. As shown in FIG. 2, since the two stair brackets 3 and 3 can be attached independently, the distance d between the side girders 1 and 1 arranged on the left and right slightly varies due to manufacturing errors. However, after adjusting the horizontal mounting position of the stair fixing brackets 3 and 3 corresponding to the variation as appropriate, they are fixed to the vertical surface of the housing K. Further, since the staircase fixing brackets 3 and 3 are independent parts separated from each other, other staircase bodies (not shown) having different widths of the side beams 1 and 1 can be easily handled.

  As shown in the drawing, each stair fixing bracket 3 is firmly fixed to the vertical surface of the housing K with a tapping screw T through a through hole 321 provided in a connecting piece 32 that connects two holding pieces 31. And the upper end part 11 of the side beam 1 is clamped between the clamping pieces 31 and 31 of the stair fixing fixture 3 fixed to the said housing | casing K, and the said upper end is passed through the through-holes 311 and 311 provided in each clamping piece 31 and 31. The part 11 is firmly clamped and fixed to the stair fixing bracket 3 with tapping screws T from both sides.

  FIG. 3 is a partial side view showing a part of a staircase body A according to the present invention in which two side girders 1 and a plurality of treads 2 are assembled by tread plate mounting brackets 4. FIG. FIG. 4 is a perspective view showing the tread plate mounting bracket 4.

  As shown in FIG. 4, the tread plate mounting bracket 4 includes a tread plate mounting portion 41 for mounting the tread plate 2 indicated by a dotted line and a side girder fixing portion 42 fixed to the side girder 1. Screw holes 411 and 421 are formed in the side girder fixing portion 42, respectively.

  The staircase body A can be used by arranging two side girders 1 and 1 in advance at a predetermined interval and assembling the side plate 1 with the tread plate 2 with the tread plate mounting bracket 4. Alternatively, the tread plate 2 calculated from the floor height dimension, the horizontal dimension, the number of up and down steps, etc. at the site is assembled to the side beam 1 using the tread plate mounting bracket 4, and screws, bolts, nuts, etc. are passed through the screw holes 411, 421. It may be fixed at site construction.

  FIG. 5 is a partial cross-sectional side view showing an embodiment in which a staircase mounting structure according to the present invention is constructed on an upper floor having a relatively low height, such as a step in and out of a balcony. FIG. 5 shows a configuration in which a staircase body A, which is a unit obtained by assembling two tread plates 2 a and 2 b to two side girders 1, is fixed to a housing K by a stair fixing bracket 3.

  As shown in FIG. 5, the staircase fixing bracket 3 has a connecting portion 32 fixed to the vertical surface of the housing K with a tapping screw T, and a clamping piece 31 firmly clamps the upper end portion 11 of the side beam 1. The staircase body A can be easily attached to the housing K without the side beam 1 being rattled.

  Here, the uppermost tread plate 21 is fixed to the side beam 1 by a known method, for example, a mechanical method such as screw fixing or nail fixing, or the tread plate mounting bracket 4 described above. By doing in this way, the uppermost tread board 21 can be constructed by abutting against the floor finishing material F such as flooring material laid on the upper surface of the frame K. For example, during the renovation, the floor finishing material F is modified. It can be easily done.

  In the above-described embodiment, an example in which a wooden material is used as the staircase body A has been described. However, the entire staircase body A may be made of a metal material. Instead, it may be simply welded to join the tread plate 2 to the side beam 1. As described above, the present invention can be modified in design, and is included in the technical scope of the present invention without departing from the scope of the claims.

A Staircase body according to the present invention F Floor finish material K Frame T Tapping screw d Side girder spacing 1 Side girder 11 Side girder upper end 2 Tread plate 21 Tread plate 2a in the embodiment Tread plate 2b in the embodiment Tread plate in the embodiment 3 Stair Fixing Bracket 31 Clamping Piece 311 Through Hole 32 Connecting Piece 321 Through Hole 4 Tread Plate Assembly Bracket 41 Tread Plate Placement Section 411 Screw Hole 42 Side Girder Fixing Section 421 Screw Hole

Claims (1)

  A pair of stairs fixing brackets are attached to the vertical surface of the frame connected to the upper floor with the upper ends of the side stairs of the stairs body consisting of side girders arranged on the left and right and the treads fixed to the side girders. In the staircase mounting structure to be attached through, the stair fixing bracket is formed in a substantially U-shaped cross section with a pair of clamping pieces for clamping the upper end portion of the side beam from both sides and a connecting piece for connecting the clamping pieces, A pair of stairs fixing brackets are adjusted to an appropriate distance in the horizontal direction, and the connecting pieces are fixed to the vertical surface of the housing, and the upper ends of the side girders are clamped and fixed by the clamping pieces of each stairs fixing bracket. The characteristic staircase installation structure.