JP3057154B2 - Footboard mounting bracket, footboard mounting method, and stairs using the footboard mounting bracket - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a footboard mounting bracket, a footboard mounting method, and a staircase using the footboard mounting bracket. More specifically, the present invention relates to a new tread plate mounting bracket for mounting a tread plate to a Sasara girder.

[0002]

2. Description of the Related Art In recent years, in residential dwellings and the like, stairs using a Sasara girder designed to have a predetermined size have been used in order to shorten the construction period. FIG. 10 is a schematic explanatory view of the stairs. The sasara girder 10 is formed in a step shape as viewed from the side as shown in FIG. 10 and is fixed to a wall or the like (not shown) at a construction site. Then, in the Sasara digit 10,
The stairs are constructed by attaching the tread 20 to be stepped on by a foot and the riser 30 which is vertically attached to the tread 20 and constitutes the front of the stairs.

As shown in FIG. 11, a riser plate 30 is previously attached to the tread plate 20 with screws (not shown) or the like, and the tread plate 20 is attached to the sasara beam 10 using a tread plate mounting bracket 500. The tread plate mounting bracket 500 includes a tread plate fixing portion 510 attached to the back surface of the tread plate 20 and a Sasara girder fixing portion 52 attached to the inner surface of the sasara girder 10.
0, for example, by bending a metal plate to form a substantially L-shape in side view.

The tread fixing portion 510 of the tread mounting bracket 500 is attached to the back surface of the tread 20 with screws or the like, and then the Sasara girder fixing portion 520 is attached to the inner surface of the Sasara girder 10.

[0005]

[Problems to be Solved by the Invention] However, when such a footboard mounting bracket 500 is used, when the Sasara girder fixing portion 520 is mounted on the Sasara girder 10, the footboard 2
It is necessary to hold the tread plate 20 while pressing down the 0, and screw the Sasara girder fixing portion 520 from below the stairs to be constructed. For this reason, at least two workers are required at the time of construction, and the mounting work is also complicated.

In addition, it is possible to attach the tread mounting bracket 500 to the sasara girder fixing portion 520 in advance, and then screw the tread 20 to the tread mounting bracket 500. However, in this case, there is a similar problem.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned drawbacks of the prior art, and has as its object to provide a new tread plate mounting bracket which facilitates a tread plate mounting operation.

[0008]

According to a first aspect of the present invention, there is provided a footboard mounting bracket for mounting a footboard to a Sasara girder, the footboard mounting bracket provided on the back side of the footboard, and a footboard mounting bracket. It is provided with a metal fitting for a Sasara girder provided on a side surface, the metal fitting for a tread comprises a tread plate fixing portion having a flat plate shape fixed to the back surface of the tread plate, and the metal fitting for a Sasara girder is formed in a flat plate shape fixed to the inner surface of the Sasara girder. And a receiving plate portion substantially perpendicular to the fixing portion, and the projecting portion is sandwiched between the upper surface of the receiving plate portion and the tread plate fixing portion from both sides by a restoring force.
And non-groove-shaped receiving portion is characterized by having a pair of fitting means it consists of a protruding portion fitted in the groove-like receiving portion.

Further, step board mounting bracket according to claim 2, prior
On the upper surface of the support plate, mount the support in parallel with the width direction of the tread.
In addition, the projecting portion is provided on the lower surface of the footboard fixing portion.
It is characterized by having.

[0010] Further, the tread plate mounting bracket according to claim 3 is characterized in that:
A hanging portion for hanging a metal fitting for the Sasara girder on the upper end surface of the Sasara girder is formed at the upper end of the Sasara girder fixing portion by bending.

[0011] A first stepboard mounting method according to the present invention is characterized in that the stepboard is mounted on a Sasara girder using the stepboard mounting bracket according to the present invention.

According to a second aspect of the present invention, there is provided a footboard mounting method for mounting a footboard to a sasara girder using the footboard mounting hardware according to claim 3. In addition, an elastic plate material is sandwiched between the upper end surface of the Sasara girder and the tread plate.

The staircase according to the present invention is characterized in that the stepboard is fixed to the Sasara girder using the stepboard mounting bracket according to the present invention.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a view showing a footboard mounting bracket according to the present invention, and FIG.
FIG. 2 (b) is a schematic perspective view of the tread metal fitting 200 as viewed from the back, FIG. 2 is an explanatory view showing a tread mounting method using the tread metal fitting according to the present invention, and FIG. Riser 3
FIG. 4 is a schematic explanatory view showing a method of attaching the “0” to the tread plate 20.
Is a view showing a riser mounting bracket 300, and FIG.
FIG. 5B is a front view, FIG. 5B is a top view, FIG. 5C is a side view, and FIG. 5 is a view showing a riser plate support 400, and FIG. 6 (b) is a top view, FIG. 6 (c) is a side view thereof, and FIG. 6 is a view showing another riser plate support 400, and FIG. 6 (a) is a top view thereof, FIG. b) shows that the riser support metal fitting 400 is
FIG. 7 is a view showing still another riser support 400, wherein FIG. 7 (a) is a top view thereof and FIG. 7 (b) is a view showing the riser support 400. 8 is a side view showing a state in which the tread plate 20 is attached to the tread plate 20, FIG. 8 is a partially cutaway sectional view showing a state in which the tread plate 20 is attached to the sasara girder 10 using the tread plate attachment bracket according to the present invention, and FIG. It is a schematic perspective view which shows another embodiment of the tread metal fittings 200 of the tread mounting metal fitting which concerns on FIG.

The tread mounting bracket according to the present invention includes a tread mounting bracket 200 and a Sasara girder mounting bracket 100 mounted on the back surface of the tread 20. FIG.
As shown in (b), a flat-shaped tread fixing portion 210 for fixing to the tread 20 and two protruding portions 220 fitted to the receiving portion 121 of the metal fitting 100 for the sasara girder are provided. . The tread metal fitting 200 is made of a metal plate, and two substantially columnar protrusions 220 having rounded ends are integrally formed with the tread fixing part 210 by, for example, squeezing. The receiving groove 2 is provided on the outer peripheral surface of the protrusion 220.
The tread fixing portion 210 has three screw holes 230 formed therein.

As shown in FIG. 1A, the Sasara girder fitting 100 has a flat plate-shaped Sasara girder fixing portion 110 for fixing to the inner surface of the Sasara girder 10, and the Sasara girder fixing portion 110 is substantially similar to the Sasara girder fixing portion 110. The tread plate 120 is provided with a receiving portion 121 into which the protruding portion 220 of the tread metal fitting 200 is fitted. The metal fitting 100 for the Sasara girder is also made of a metal plate, and has a sufficient strength that the receiving plate portion 120 does not bend downward when fitted.

At the upper left and right ends of the Sasara girder fixing portion 110, hanging portions 130 for hanging the Sasara girder fitting 100 on the upper end surface of the Sasara girder 10 are bent. The width and depth of the hanging portion 130 are determined by the bracket 100 for the Sasara girder.
Is set such that it can be hung on the upper end surface of the sasaras girder 10 and does not protrude outside the outer surface of the sasaras girder 10. As a result, the Sasara girder fitting 100 can be screwed to the side surface of the Sasara girder 10 in a state where the Sasara girder fitting 100 is hung from the Sasara girder 10.
00 can be easily mounted. A screw hole 140 is formed in the salar girder fixing portion 110.

The receiving plate 120 is provided so as to be substantially parallel to the tread plate 20.
0, by lowering the central portion of the Sasara girder fixing portion 110 by being located at a position lower by the sum of the height of the receiving portion 121 and the thickness of the tread metal fitting 200 from the upper end surface of the receiving portion 121. , Are formed integrally with the Sasara girder fixing portion 110. As a result, when the tread 20 is attached to the Sasara girder 10, the back surface of the tread 20 is positioned on the upper end surface of the Sasara girder 10.

The receiving portion 121 is formed in a groove shape. The tread plate 2 is formed so that the projecting portion 220 fitted to the receiving portion 121 can slide the receiving portion 121 in the width direction of the tread plate 20.
0 is provided substantially parallel to the width direction. The receiving part 12
1 is, for example, as shown in FIG.
Of receiving parts 122 that sandwich the
For example, it is formed by cutting and raising the receiving plate portion 120. Also, the protrusion 220 fitted to the receiving portion 121
Is formed on the distal end side of the receiving portion piece 122 inward so that the receiving portion 122 does not easily come off. It has become so.

The tread mounting bracket according to the present invention is used as follows. First, as shown in FIG. 2, the tread metal fitting 200 is screwed at a predetermined position at both ends of the back surface of the tread plate 20 with the protrusion 220 facing downward, using a wood screw 240 or the like. In addition, the hanging part 130 is hung on the upper end surface of the Sasara girder 10, and the Sasara girder fixing part 120 is suspended.
Is screwed to the side surface of the Sasara beam 10 with a wood screw 150 or the like.

Next, the riser 30 is attached to the tread 20. The tread plate 20 has a fitting groove 2 into which the riser plate 30 is fitted.
The riser 1 is formed, and the riser 30 is attached to the fitting groove 21 via the riser fitting 300 as shown in FIG. The riser mounting bracket 300 is shown in FIG.
As shown in the figure, two side plate portions 310 sandwiching the riser plate 30 from both sides and a base portion 32 connecting the both side plate portions 310 at lower ends.
0, and is formed by bending a metal plate into a substantially concave shape in a side view extending to the upper end side. Base 320
Is set to a width that can be inserted into the fitting groove 21,
The distance between the two at the upper ends of the two side plate portions 310 is set to be slightly wider than the fitting groove 21. Further, the side plate portion 310 is provided with a plurality of claw portions 312 facing upward by bending the side plate portion 310 outward.
Further, the upper end of the side plate portion 310 is provided with a kicking plate supporting portion 311 having a sharp angled tip for sandwiching the kicking plate 30 from both sides.
Are bent inside.

The riser mounting bracket 300 is inserted into the fitting groove 21 together with the riser 30 inserted between the two side plates 310. As a result, the riser plate support 311 at the upper end of the side plate portion 310 bites into the riser plate 30, and the riser plate mounting bracket 300 is fixed to the riser plate 30. Also, the side plate portion 31
The claw 312 on the 0 side bites into both sides of the fitting groove 21, and the claw 312 plays a role of returning the hook, so that the kick plate 30 is firmly fixed to the fitting groove 21 of the tread plate 20. By using such a riser mounting bracket 300, the wobble of the riser 30 can be reduced, and in some cases, the work of screwing the riser 30 to the tread 20 can be omitted.

Further, the tread plate 20 has a riser support metal fitting 40.
0 is attached. The riser support 400 is for pressing the upper riser 30 against the back surface of the lower tread 20 when the treads 20 for two steps are attached to the Sasara girder 10 as shown in FIG. It is. As shown in FIG. 5, the riser support 400 includes a tread fixing portion 410 for fixing the riser 30 to the tread 20, and a retainer 420 for pressing the riser 30 from the back side to the back of the tread 20. The metal plate is bent, and the tread plate fixing portion 410 and the pressing portion 420 are integrally formed. A screw hole 440 is formed in the tread plate fixing portion 410, and
Is provided with a claw portion 430 having an acute angle on the back surface. The holding portion 420 is formed in a substantially U-shape in a side view,
Holding part 420 The holding part 420 and the tread plate 20 are restored by the restoring force.
The push plate 30 inserted between the tread 20 and the rear of the tread 20 is pressed against the back of the tread 20. As a result, when the tread plate 20 to which the riser plate 30 is attached is attached to the sasara girder 10, the riser plate 30 does not wobble, and a gap is formed between the riser plate 30 and the back surface of the lower tread plate 20. Can be prevented.

The shape of the riser support 400 is not particularly limited as long as the above-mentioned effects can be achieved, and various shapes can be adopted. For example, the riser plate support 400 of FIG. 6 does not have the claw portion 430, and cuts out the back surface of the tread plate 20 by the thickness of the tread plate fixing portion 410, and cuts the notch 22 formed by the notch. The tread plate fixing portion 410 can be fitted and fixed with screws or the like. Further, like the riser support 400 shown in FIG. 7, the claw portions 450 for fixing to the back surface of the tread plate 20 may be bent on both sides of the pressing portion 420.

The tread plate 20 to which the riser plate 30 and the riser plate support bracket 400 are attached in this manner, the projection 220 of the treadle bracket 200 is fitted into the groove-shaped receiving portion 121, and the step board 20 is attached to the sasara beam 10. It is attached. At this time, as shown in FIG. 2, when attaching the tread plate 20 to the sasara beam 10, it is preferable to place a rubber plate 40 as a plate material having elasticity. The rubber plate 40 is designed to have a length substantially equal to the thickness of the hanging portion 130 and to cover at least the upper surfaces of the two hanging portions 130 of the metal fitting 100 for the Sasara girder and the upper end surface of the Sasara girder 10 therebetween. You. As a result, as shown in FIG.
The two suspension portions 130 can absorb a step generated on the upper end surface of the sasalar girder 10, and can eliminate abnormal noise caused by the step.

The protruding portion 220 has a groove-shaped receiving portion 121.
Can be moved in the lateral width direction of the tread plate 20 by sliding the upper end of the tread plate 20, so that the side surfaces of the tread plate 20 can be easily aligned. Further, even after the fitting, the tread plate 20 is moved so that the tread plate 2
0 can be aligned, and construction of stairs becomes very easy.

In the present invention, various embodiments can be considered as the fitting means. For example, the one shown in FIG.
10 are integrally formed. The protruding portion 220 is formed in a thin plate shape with a rounded tip, and
A concave portion 226 for locking the convex portion 123 of the receiving portion 121 is formed on both side surfaces of the receiving portion 121. Such a protrusion 220
However, a similar effect can be obtained. Also, the protrusion 2
The shape of the receiving portion 121 is not limited to the shape of the groove, and is not limited to the shape of the protrusion 20.
20 may be provided.

The footboard mounting bracket according to claim 1 of the present invention,
A tread mounting bracket for attaching a tread to a Sasara girder, comprising: a tread metal fitting provided on the back surface of the tread, and a Sassara girder metal fitting provided on the inner side surface of the Sasara girder, wherein the tread fitting is fixed to the back of the tread. The Sasara girder fitting includes a flat Sasara girder fixing portion fixed to the inner surface of the Sasara girder, and a receiving plate portion substantially perpendicular to the fixing portion. on the part upper surface and the step plate fixing unit, condensate
Since it is provided with a pair of fitting means composed of a groove-shaped receiving portion that sandwiches the projecting portion from both sides by the original force and a projecting portion that fits into the groove-shaped receiving portion, In addition to attaching the metal fittings to the Sasara girder, attaching the metal fittings for the tread to the tread, and then fitting the metal fittings for the treads to the metal fittings for the Sasara girder, the treads can be attached from above the Sasara girder. As a result, the work of attaching the tread can be performed by one person, and the construction of the stairs can be simplified.

Further, the stepping plate mounting bracket according to the second aspect of the present invention is the stepping plate mounting bracket according to the first aspect, wherein:
On the upper surface of the receiving plate portion, the receiving portion is provided in parallel with the width direction of the tread plate.
And the protruding portion is provided on the lower surface of the footboard fixing portion.
Since it is characterized in that was example, the after or or fitted when fitting, moves the step board in the width direction, it is possible to align all the step boards sides easily.

Further, according to the third aspect of the present invention, there is provided the footboard mounting bracket according to the third aspect of the present invention, wherein the footboard mounting bracket is provided at an upper end of the Sasara girder fixing portion so as to be hung on the upper end surface of the Sasara beam. Since the installation portion is formed in a bent shape, the metal fitting for the sasara girder can be screwed to the sasara girder while being hung on the upper end surface of the sasara girder, and the attaching work of the sasara girder fitting can be facilitated.

As described above, by using the tread plate mounting bracket according to the present invention, tread plate mounting work, which conventionally required at least two workers, can be performed by one person, and stairs can be easily constructed. Stairs that are easy to construct can be provided.

In particular, as in the step board mounting method according to the fifth aspect, an elastic plate-like material such as a rubber plate is provided between the upper surface of the hanging portion of the bracket for the Sasara girder and the upper end surface of the Sasara girder and the tread plate. When the stepping plate mounting bracket of claim 3 is used, the stepping plate does not rattle.
It becomes possible to attach to the Sasara girder, and it is possible to prevent abnormal noise caused by the gap between the tread and the Sasara girder.

[Brief description of the drawings]

FIG. 1 is a view showing a tread plate mounting bracket according to the present invention,
FIG. 1A is a schematic perspective view of a bracket for a Sasara girder, and FIG.
FIG. 3 is a schematic perspective view of the tread plate bracket viewed from the back.

FIG. 2 is an explanatory diagram showing a step board mounting method using the step board mounting bracket according to the present invention.

FIG. 3 is a schematic explanatory view showing a method of attaching a riser to a tread.

FIG. 4 is a view showing a riser mounting bracket, and FIG.
3 is a front view, FIG. 3B is a top view, and FIG. 3C is a side view.

FIG. 5 is a view showing a riser support metal, and FIG.
Is a front view, FIG. 3B is a top view, and FIG. 3C is a side view.

FIGS. 6A and 6B are views showing another riser plate support, wherein FIG. 6A is a top view thereof and FIG. 6B is a side view showing a state where the riser support is attached to a tread. .

FIG. 7 is a view showing still another riser support metal;
FIG. 1A is a top view of the same, and FIG. 1B is a side view showing a state where the riser support metal is attached to a tread.

FIG. 8 is a partially cutaway sectional view showing a state in which the tread is attached to the Sasara girder using the tread attaching bracket according to the present invention.

FIG. 9 is a schematic perspective view showing another embodiment of the tread metal fitting of the tread mounting metal according to the present invention.

FIG. 10 is a schematic explanatory view of a stair using a tread plate and a Sasara girder.

FIG. 11 is an explanatory view of a step board mounting method using a step board mounting bracket in a conventional example.

[Description of Signs] 10 Sasara girder 20 Tread plate 30 Kick-in plate 40 Rubber plate 100 Metal fitting for Sasara girder 110 Sasara girder fixing part 120 Receiving plate part 121 Groove-shaped receiving part 123 Convex part locked by receiving groove of protruding part Reference Signs List 130 Suspended part 200 Footboard fitting 210 Footboard fixing part 220 Projecting part 221 Receiving groove for locking the convex part 300 Kick-plate mounting metal 310 Side plate 311 Kick-plate support 312 Claw 400 Kick-plate support metal 420 Pressing part 430 Claws

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-7-119266 (JP, A) JP-A-56-93963 (JP, A) JP-A 7-38382 (JP, U) (58) Field (Int.Cl. ⁷ , DB name) E04F 11/02-11/14

Claims (6)

(57) [Claims] 1. A tread mounting bracket for mounting a tread on a sasara girder, comprising a tread mounting provided on a back surface of the tread.
Equipped with a Sasara girder fitting provided on the inner surface of the Sasara girder,
The tread metal fittings include a flat tread fixing part fixed to the back surface of the tread, and the Sasara girder metal fitting is substantially perpendicular to the flat Sasara girder fixing part fixed to the inner surface of the sasara girder. A groove-shaped receiving portion that sandwiches the projecting portion from both sides by a restoring force on the upper surface of the receiving plate portion and the tread plate fixing portion, and a projecting portion that fits into the groove-shaped receiving portion. And a pair of fitting means comprising: 2. The receiving part is placed on the upper surface of the receiving part next to a tread plate.
The lower surface of the tread plate fixing portion while being provided in parallel with the width direction.
The tread mounting bracket according to claim 1 , further comprising the protrusion . 3. A hanging portion for hanging a metal fitting for a Sasara girder on an upper end surface of the Sasara girder at an upper end of the Sasara girder fixing portion. Treadboard mounting bracket. 4. A tread mounting method comprising: mounting a tread on a Sasara girder using the tread mounting bracket according to claim 1, 2 or 3. 5. A footboard mounting method for mounting a footboard on a Sasara board using the footboard mounting bracket according to claim 3, wherein the upper surface of the hanging portion of the bracket for the Sasara girder and the upper end face of the Sasara girder; A tread plate mounting method characterized by sandwiching a rubber plate between the tread plates. 6. A staircase, wherein the stepboard is fixed to a Sasara girder using the stepboard mounting bracket according to claim 1, 2 or 3.