JP5710348B2 - Staircase - Google Patents

Description

  The present invention relates to a staircase such as a spiral staircase.

  In a conventional spiral staircase, a tread plate support is attached around a support column, and the tread plate is placed on the tread plate support and fixed with screws. In order to prevent the toes from hitting the toes when going up the stairs, the tread plate supporter may be cut obliquely on the outer peripheral side so that the upper surface side on which the tread plate is placed protrudes larger than the lower surface side to the outer periphery of the column In this case, it is not easy to mount the cover that hides the tread plate holder mouthpiece without showing the head of the mounting screw so as not to drop off.

  An object of this invention is to enable it to attach a cover to a tread board holder easily and stably in view of the situation mentioned above.

  In order to achieve the above object, a staircase according to the first aspect of the present invention comprises a tread board support, a cover, a cover mounting tool, and a lower end cap, and the tread board support is fixed to a support wall. And a hollow portion that is continuous in the vertical direction, and a plurality of tapping holes for mounting the treads provided near the corner portion of the hollow portion, and is cut obliquely so that the upper side protrudes from the support wall rather than the lower side. Yes, the cover attachment is provided between the tapping holes of the tread board holder, and is engaged and supported on the back surface of the cover at a position farther from the support wall than the tapping hole. The lower end of the cover is placed and supported.

  In the staircase according to claim 1, since the tread plate support is cut obliquely so that the upper side protrudes from the support wall rather than the lower side, it is possible to prevent the toes from hitting the tread plate support when going up the stairs. Lock between the tapping holes for mounting the tread on the tool to provide the cover mounting tool, fix it to the vertical wall of the tread board support, and provide the lower end cap. Mount the cover at a position farther from the support wall than the tapping hole. Since the back surface is engaged and supported by the tool, and the lower end is placed and supported by the lower end cap, the cover can be easily and stably attached regardless of the shape of the oblique cutting edge of the tread plate receiving tool. Since the cover attachment is locked between the tapping holes of the tread board holder, the cover attachment can be easily and stably attached, and the tread board holder is provided with a separate locking portion for the cover attachment. It is reasonable because it is not necessary.

It is a partially notched side view which expands and shows the attachment part to the support | pillar of a tread board. It is a partially notched top view which expands and shows the attachment part to the support | pillar of a tread board. It is a front view of a spiral staircase. (A) is a top view of a tread board holder, (b) is the same side view, (c) is the same front view. (A) is a X direction arrow view of a cover fixture, (b) is the side view, (c) is the same front view. (A) is a Y direction arrow view of a cover, (b) is the side view. (A) is a top view of a lower end cap, (b) is the side view, (c) is the front view. It is a side view which shows the assembly | attachment procedure of the principal part of this invention. It is a partially notched side view which shows other embodiment of the attachment part to the support | pillar of a tread board. It is AA sectional drawing of FIG. (A) is the Z direction arrow directional view of the cover fixture used for embodiment of FIG. 9, (b) is the side view, (c) is the same front view.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 3 shows a spiral staircase according to one embodiment of the present invention. This spiral staircase is provided on the outer periphery of a column 5 fixed vertically to a building frame, a plurality of steps 10, 10,... Arranged in a spiral around the column 5, and the steps 10, 10,. A spiral handrail 11 is provided along the side. The support column 5, the tread board 10, and the handrail 11 are made of aluminum.

As shown in FIG. 2, the support column 5 has a cylindrical shape, and grooves 12 are formed in the longitudinal direction on the outer peripheral surface at a predetermined angular interval.
As shown in FIG. 1, the tread plate 10 is formed in a substantially fan shape in plan view, and is placed on the tread plate holder 1 whose inner peripheral side portion is fixed to the column 5, and the tread plate receiver is supported by four bolts 13 from above. Fixed to the tool 1.

  The tread plate holder 1 is formed from an aluminum extruded profile, and as shown in FIGS. A substantially rectangular hollow portion 7 that is continuous in the vertical direction is formed by the outer peripheral side wall 14 that is spaced apart from the support wall 6 on the outer peripheral side and the left and right side walls 9, 9. The upper and lower surfaces of the tread board support 1 are cut horizontally, and the outer peripheral side is cut obliquely so that the upper side protrudes from the support wall 6 rather than the lower side. As shown in FIG. 2, the tread board receiver 1 includes a corner portion between the support wall 6 and the left and right side walls 9, 9, and a corner between the outer peripheral side wall 14 and the left and right side walls 9, 9 on the outer peripheral side of the outer peripheral side wall 14. There are tapping holes 8a, 8a, 8b, 8b into which bolts 13 for mounting the tread plate 10 are screwed in at four places in total. A slight gap 16 is provided between the outer peripheral tapping hole 8 b and the outer peripheral side wall 14. The support wall 6 is formed in a concave curved surface so that the inner peripheral side surface 6a is along the outer peripheral side surface of the support column 5, and the outer peripheral side surface 6b is a flat vertical surface. The central portion of the inner peripheral side surface 6a of the support wall 6 has a ridge 17 in the vertical direction. By locking the ridge 17 to the groove 12 on the outer peripheral surface of the support column 5, the tread plate support 1 is attached. It is easy to arrange vertically by shifting by a predetermined angle with the upper and lower tread plate holders 1. As shown in FIG. 1, the tread board support 1 is fixed to the support column 5 at two upper and lower portions of the support wall 6 with bolts 18 a and 18 b. A tool relief hole 19 for tightening the upper bolt 18 a is formed in the outer peripheral side wall 14.

As described above, the outer peripheral side of the tread plate holder 1 is cut obliquely, and the tapped holes 8b and 8b and the outer peripheral side wall 14 on the outer peripheral side are obliquely formed on the cut edge 20 cut obliquely, as shown in FIG. Since it is exposed in a cut state, it is not easy to directly engage and attach the cover 2 to the oblique cut edge 20. Therefore, in this spiral staircase, as shown in FIGS. 1 and 2, a cover attachment 3 is provided between the side walls 9, 9 on the outer peripheral side of the tread plate holder 1, and the cover 2 is engaged with the cover attachment 3. It is combined.
The cover fixture 3 is made of resin, and as shown in FIG. 5, a horizontally long rectangular attachment plate portion 21 is formed vertically, and a pair of protruding walls 22, 22 extends forward from the attachment plate portion 21, and the protruding wall 22. , 22 is provided with a cover locking portion 23 inclined at the same angle as the oblique cut edge 20. The cover engaging portion 23 has an umbrella-shaped cross-sectional shape in which the side edge portions 23a and 23a on both sides are bent backward. The mounting plate portion 21 is provided with a screw insertion hole 24 in the center, and the cover locking portion 23 is provided with a screw escape hole 25.
As shown in FIGS. 1 and 2, the cover mounting tool 3 inserts the side edge portions on both sides of the mounting plate portion 21 into the gap 16 between the outer peripheral side wall 14 of the tread plate receiving device 1 and the tapping holes 8 b and 8 b. 21 is fixed with screws 26 from the outer peripheral side in a state of being locked between the tapping holes 8b, 8b. The cover locking portion 23 protrudes to the outer peripheral side from the oblique cutting edge 20 of the tread plate holder 1.

As shown in FIG. 6, the cover 2 is formed by obliquely cutting an aluminum extruded profile. The cover 2 is curved in an arc shape so that the central portion in the width direction swells forward, and has folded portions 27 and 27 on both side edges. Two locking protrusions 28 are provided on the back surface of the cover 2 with a space therebetween, and a sponge-like cushioning material 29 is attached to the upper side of the back surface.
As shown in FIGS. 1 and 2, the cover 2 is attached with the edge portions 23 a, 23 a on both sides of the cover locking portion 23 of the cover fixture 3 locked between the locking protrusions 28, 28, and the folded portion 27 and 27 overlap the outside of the side walls 9 and 9 of the tread board holder 1 and hide the oblique cut edge 20 of the tread board holder 1. When the cushioning material 29 provided on the back surface of the cover 2 is pressed against the cover locking portion 23 of the cover mounting tool 3, the locking ridges 28 and 28 are stably locked to the cover locking portion 23, and the cover The rattling of 2 can be suppressed.

  A lower end cap 4 made of resin is provided at the lower part of the tread board receiving tool 1. As shown in FIG. 7, the lower end cap 4 has a vertical mounting plate portion 30 and a bottom plate portion 31, and a vertical slot 32 through which the bolt 18 b is inserted is formed in the mounting plate portion 30. As shown in FIG. 1, the lower end cap 4 is fixed by a lower bolt 18 b that abuts the attachment plate 30 on the outer peripheral side surface 6 b of the support wall 6 and attaches the tread plate holder 1 to the column 5. The bottom plate portion 31 of the lower end cap 4 conceals the footplate receiving device 1 and the lower edge of the cover 2, and the lower end of the cover 2 is placed and supported on the bottom plate portion 31.

  Next, the procedure for assembling each part will be described. First, as shown to Fig.8 (a), the support wall 6 of the tread plate holder 1 is contact | abutted to the outer peripheral surface of the support | pillar 5, and it fixes with two upper and lower volt | bolts 18a and 18b. At this time, the attachment plate 30 of the lower end cap 4 is fastened together with the support wall 6 with the lower bolt 18b. Next, as shown in FIG. 8B, the mounting plate portion 21 of the cover mounting tool 3 is inserted into the gap 16 between the outer peripheral side wall 14 of the tread plate receiving tool 1 and the tapping holes 8b and 8b from below, and the mounting plate portion 21 is inserted. Is fixed between the tapping holes 8b and 8b and fixed with screws 26. Next, as shown in FIG. 8 (c), the cover 2 is locked and supported by the cover locking portions 23 of the cover fixture 3 on the back surface and the bottom plate portion 31 of the lower end cap 4. Mount and support on. Thereafter, the tread board 10 is placed on the upper surface of the tread board holder 1, and the bolt 13 is screwed into the tapping holes 8a and 8b to fix the tread board 10.

  As described above, the spiral staircase has the step board holder 1 obliquely cut at the outer peripheral side so that the upper side protrudes to the outer side from the lower side. The cover attachment 3 is provided between the tapping holes 8b, 8b for attaching the tread 10 of the tread holder 1, and provided at the outer peripheral side of the tapping hole 8b. By engaging and supporting the back surface of the cover 2, even if the tread plate holder 1 is cut obliquely in such a manner, it is not obstructed by the tapping hole 8 b regardless of the shape of the cut edge 20. The cover 2 can be easily and reliably engaged, and the lower end of the cover 2 is placed and supported on the bottom plate 31 of the lower end cap 4 so that the cover 2 can be stably attached so as not to fall. Moreover, since the heads of screws and bolts are not exposed to the outside, the design is excellent. Since the cover attachment 3 is provided between the tapping holes 8b, 8b of the tread board holder 1, the cover attachment 3 can be easily and stably attached, and the cover attachment 3 can be attached to the tread board holder 1. This is reasonable because it is not necessary to provide a separate locking portion for the. By providing the tapping holes 8a and 8b in the vicinity of each corner portion of the hollow portion 7 of the tread plate support 1, the pitch between the tapping holes 8a and 8b can be made as wide as possible, thereby increasing the mounting strength of the tread plate 10. . Since the cover 2 is attached by the resin cover attachment 3 and the lower end cap 4, the generation of unpleasant metal rubbing noise caused by vibrations when a person goes up and down the spiral staircase is prevented. be able to. Further, since the cushioning material 29 is sandwiched between the back surface of the cover 1 and the cover locking portion 23, it is possible to more reliably prevent a sound from being generated even when the stairs are shaken or when the cover 2 is kicked with a foot.

FIGS. 9 and 10 show another embodiment of a portion where the tread board 10 is attached to the column 5, and FIG. 11 shows the cover fixture 3 used for this. Components other than the cover fixture 3 are the same as those in the previous embodiment. The cover fixture 3 is provided with a locking claw 33 at the upper center portion of the mounting plate portion 21, and provided with leaf spring-like contact pieces 34 at the lower portions on both sides of the mounting plate portion 21. 33 is locked to the lower edge of the escape hole 19 of the outer peripheral side wall 14 of the tread plate holder 1 to restrict the cover mounting tool 3 from being lowered, and the contact piece 34 is connected to the outer peripheral side wall 14 and the tapping hole 8b, The mounting plate portion 21 is pressed against the outer peripheral side wall 14 while being pulled between the portions 8b.
According to the present embodiment, when the cover fixture 3 is attached, the attachment plate portion 21 is inserted between the outer peripheral side wall 14 of the tread plate receptacle 1 and the tapping holes 8b, 8b from below, and is slid upward to fix the locking claw 33. By simply locking the outer peripheral side wall 14 to the relief hole 19, the cover mounting tool 3 can be stably mounted and the screw 26 is not required, so that the workability is further improved.

  The present invention is not limited to the embodiments described above. The shape and material of each component such as the tread board receiver 1, the cover attachment 3, and the cover 2 can be changed as appropriate. The present invention can be applied not only to a spiral staircase but also to a straight staircase.

DESCRIPTION OF SYMBOLS 1 Tread board holder 2 Cover 3 Cover attachment tool 4 Lower end cap 5 Post (support)
6 Support wall 6b Outer peripheral side of support wall (vertical wall)
7 Hollow part 8a, 8b Tapping hole 9 Side wall 10 Tread

Claims (1)

  A tread board holder, a cover, a cover mounting tool, and a lower end cap are provided. The tread board holder is provided in the vicinity of a support wall fixed to the support body, a vertically continuous hollow portion, and a corner portion of the hollow portion. It has a plurality of tapping holes for mounting treads, and the upper side is cut obliquely so that it protrudes from the support wall rather than the lower side. The back of the cover is engaged and supported at a position farther away from the support wall than the tapping hole, and the lower end cap is fixed to the vertical wall of the tread plate support and supports the lower end of the cover. Staircase characterized by.

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