JPH09137570A - Tread fixing structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate fitting work by inserting the end part of a tread in a tread insert recessed part, disposing a wedge in such a manner that the outer surface comes into contact with the lower surface of the tread and the lower surface of the recessed part, and fixing the wedge by a fixing nail driven from the wedge side into the side plate and a fixing nail driven from the wedge side into the tread side. SOLUTION: A main body of a tread fixing structure comprises treads 3 laid horizontally between the side plates 1 and risers 12 vertically constructed between the upper and lower treads 3. The end part of the tread 3 is inserted in a tread insert recessed part 2 recessed in the side plate 1. A wedge 4 is disposed in such a manner that the outer surface comes into contact with the lower surface of the tread 3 and the lower surface of the insert recessed part 2. Subsequently, the wedge 4 is fixed by a first fixing nail 5 driven from the wedge 4 side into the side plate 1 and a second fixing nail 6 driven from the wedge 4 side into the tread 3 side. Then, plural nails can be driven from one direction. Thus, the tread 3 and the wedge 4 are connected to each other by the fixing nail 6 so as to be surely fitted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tread fixing structure used for stairs.

[0002]

2. Description of the Related Art Conventionally, it has been practiced to fix treads used for forming stairs with wedges. As shown in FIG. 4, the footboard 3 has an end portion inserted and arranged in the bottom of a footboard insertion recess 2 formed in the side plate 1, and the footboard insertion recess 2 is positioned so as to be located below the footboard 3. The wedge 4'is arranged so that the wedge 4'is fitted therein. Then, finally, the nail a is driven from the side of the wedge 4'to the side plate 1, and the nail b is driven from the outer surface of the side plate 1 to the step plate 3 so that the step 4 of the step plate 3 is wedged. The footboard 3 and the wedge 4'are fixed to each other with the end portions held in the footboard insertion recess 2.

[0003]

However, in the conventional example as described above, when the nails a, b are used, the driving directions of the nails a, b are both the inner surface side and the outer surface side of the side plate 1. However, there is a problem in that the work of driving the nails a and b takes time and labor, and it takes time to attach the step plate 3. Further, the end portion of the tread plate 3 is fixed to the tread plate insertion recess 2 by the wedge 4 '.
However, since the footboard 3 and the wedge 4'are not connected to each other by nails, the footboard 3 tends to wobble easily.

An object of the present invention is to solve the above-mentioned problems, and it is possible to drive a plurality of nails from one direction, so that the mounting work using the nails can be easily performed, and at the same time, the footboard and the wedges. It is an object of the present invention to provide a tread plate fixing structure in which the tread plates can be surely attached by connecting them to each other.

[0005]

In order to achieve the above object, in the invention of claim 1, the end portion of the tread plate 3 is inserted and arranged in the tread plate insertion recess 2 formed in the side plate 1, and the outer surface has a tread plate. A wedge 4 is provided in the step plate insertion recess 2 so as to contact the lower surface of the step plate 3 and the lower surface of the step plate insertion recess 2.
The plurality of nails 5 are characterized in that the wedge 4 is fixed by the first fixing nail 5 that is driven into the side and the second fixing nail 6 that is driven from the side of the wedge 4 toward the side of the step board 3. , 6 can be driven from one direction, the mounting work using the nails 5, 6 can be easily performed, and the tread plate 3 and the wedge 4 can be connected to each other to securely mount the tread plate 3. You can

According to a second aspect of the present invention, in the first aspect, the wedge 4 is inserted and arranged in the step board insertion recess 2.
It is characterized in that it has a T-shaped cross-section with both upper ends, and the wedge 4 is inserted and arranged in the step board insertion concave portion 2 to dispose the wedge 4 below both ends of the step board 3. The wedge 4 having the same shape can be used on either the lower side of one end portion of 3 or the lower side of the other end portion, and the members can be made common.

The invention of claim 3 is characterized in that the nailing portion 8 into which the second fixing nail 6 is driven in is made to have the same thickness along the longitudinal direction. Therefore, the nail fixing portion 8 can be fixed to the step board 3 by using the second fixing nail 6 having the same length dimension.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The staircase is a footboard 3 which is installed horizontally between both side plates 1 which are arranged facing each other, and a vertical step between the upper and lower footboards 3 between the upper and lower footboards 3. The main body is composed of the riser plate 12 that is installed. A tread plate insertion recess 2 is provided on the inner side surface of each side plate 1 facing each other, and the end of the tread plate 3 is inserted and arranged in the tread plate insertion recess 2. In FIG. 1B, the step plate insertion recess 2 has a larger width dimension on the rear side on the right side of the drawing than on the front side on the left side of the drawing, and the lower side becomes wider toward the rear side. That is, the end portion of the tread plate 3 is inserted and arranged on the upper part of the tread plate insertion recess 2, and the wedge 4 is formed in the lower portion of the tread plate insertion recess 2 so as to be positioned on the lower surface side of the tread plate 3 in the wedge margin 2a.
Is to be inserted and arranged.

FIGS. 1 and 2 show an example of the wedge 4, in which an insert portion 7 to be inserted into the wedge allowance 2a is integrally provided on one end side of the upper portion of the side plate fixing portion 9. A nail driving portion 8 fixed to the lower surface of the step plate 3 is integrally provided on the other end side of the upper portion of the side plate fixing portion 9 to have a T-shaped cross section. Here, the insertion portion 7 and the nail driving portion 8 have the same shape, that is, as shown in FIG. 2, the insertion portion 7 and the nail driving portion 8 gradually increase in thickness along the longitudinal direction. The insertion portion 7 and the nail driving portion 8 can be used in common with each other.

The side plate fixing portion 9 is formed with through holes 11 for inserting nails at predetermined intervals along the longitudinal direction,
Further, the insertion portion 7 and the nail driving portion 8 are also provided with through holes 11 for inserting nails at predetermined intervals along the longitudinal direction. In the wedge 4, the insertion portion 7 is inserted into the wedge margin 2a, the side plate fixing portion 9 is arranged along the inner surface of the side plate 1, and the second fixing nail 6 is driven from the nail driving portion 8 toward the lower surface of the step plate 3, The first fixing nail 5 from the side plate fixing portion 9 toward the side plate 1.
It is fixed to the side plate 1 and is also connected and fixed to the step plate 3 by driving.

When installing the wedge 4 on the lower surface side of the step board 3, the driving work of the first fixing nail 5 and the second fixing nail 6 can be performed from one side inside the side plate 1. The work of attaching the wedge 4 using the plurality of nails 5 and 6 can be easily performed without taking time and effort. Further, since the insertion portion 7 and the nailing portion 8 have the same shape as described above, the insertion portion 7 is inserted and arranged in the wedge margin 2a to connect and fix the nailing portion 8 to the step board 3, or The striking portion 8 can be inserted and arranged in the wedge allowance 2a, and the insertion portion 7 can be connected and fixed to the tread plate 3, and the wedge portion 4 can be inserted and arranged in the tread plate insertion concave portion 2 and the wedges 4 can be arranged below both ends of the tread plate 3. The wedge 4 having the same shape, whether under one end of the footboard 3 or under the other end,
Can be used, and the members can be commonly used.

FIG. 3 shows another example of the wedge 4, in which the nail driving portion 8 into which the second fixing nail 6 is driven has the same thickness along the longitudinal direction. In this structure, it is not possible to share the members by eliminating the left-right handedness, but the second fixed nail 6 having the same length dimension is used, and the nail striking portion 8 is stepped along the longitudinal direction. It can be fixed to 3.

[0013]

According to the first aspect of the present invention, the end portion of the tread plate is inserted and arranged in the tread plate insertion recess formed in the side plate, and the outer surface is in contact with the lower surface of the tread plate and the lower surface of the tread plate insertion recess. A wedge is provided inside, and a first fixed nail that is driven from the wedge side to the side plate side and a second fixed nail that is driven from the wedge side to the step plate side.
Since the wedges are fixed with the fixing nails, it is possible to drive a plurality of nails from one direction, and it is possible to easily perform the mounting work using the nails. Also, the foot plate and the wedges are secondly fixed. The nails can be connected to each other by nails to securely attach the tread plate.

According to a second aspect of the present invention, in addition to the effect of the first aspect, the wedge has a T-shaped cross section having insertion portions to be inserted and disposed in the stepping plate insertion concave portions at both upper ends. When inserting the wedge into the step board insertion recess and arranging the wedges under both ends of the step board, use the wedge having the same shape at either the lower side of one end of the step board or the lower side of the other end. Therefore, the members can be shared.

The invention of claim 3 is the second aspect of the invention.
Since the nail driving portion into which the fixed nail is driven has the same thickness along the longitudinal direction, in addition to the effect of claim 1, the second fixed nail having the same length dimension is used. The nailing portion can be fixed to the footboard along the longitudinal direction.

[Brief description of the drawings]

1A and 1B show an example of the present invention, in which FIG. 1A is a front sectional view in which a part is omitted, and FIG. 1B is a side sectional view in which a wedge is omitted.

FIG. 2 shows a wedge used in the same as above, (a)
Is a plan view, (b) is a front view, (c) is a left side view of (b), and (d) is a right side view of (b).

FIG. 3 shows another example of a wedge, (a) is a plan view,
(B) is a front view, (c) is a left side view of (b), (d) is a right side view of (b).

4A and 4B show a conventional example, in which FIG. 4A is a front sectional view in which a part is omitted, and FIG. 4B is a side sectional view in which a wedge is omitted.

[Explanation of symbols]

 1 side plate 2 tread plate insertion recessed part 3 tread plate 4 wedge 5 first fixed nail 6 second fixed nail 7 insertion part 8 nailing part

Claims (3)

[Claims] 1. A stepping plate insertion recess is formed in a side plate, and an end portion of the treading plate is inserted and arranged in the stepping plate insertion recessed part. , A first fixing nail driven from the wedge side to the side plate side,
A foot plate fixing structure, characterized in that the wedge is fixed by a second fixing nail that is driven into the foot plate side from the wedge side. 2. The tread plate fixing structure according to claim 1, wherein the wedge has a T-shaped cross section having insertion portions inserted into the tread plate insertion recesses at both upper ends. 3. The stepping plate fixing structure according to claim 1, wherein the nail driving portions into which the second fixing nails are driven have the same thickness along the longitudinal direction.