JP2007170066A - Fixing structure of treadboard of staircase - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fixing structure of a treadboard of a staircase, which can prevent a squeak noise from being generated, for example, by the deflection of a treadboard, and which enables the treadboard to be easily post-constructed even if an open stringer and a closed stringer are constructed in advance. <P>SOLUTION: A fitting recess 11 of the treadboard 1 has a horizontal plate part 12 which is laid between right and left inner walls; and a fitting protrusion 22 of the open stringer such as an open stringer 2 has a horizontal groove part 23 which is provided throughout the width of the fitting protrusion 22 directed backward from a front face. When the treadboard 1 is inserted into a treadboard inserting part 21 which is provided in the open stringer, the horizontal plate part 12 of the fitting recess 11 is put into the state of being inserted and fitted into the horizontal groove part 23 of the fitting protrusion 22 from its front face. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a fixing structure of a tread of a staircase that is fitted to a side beam by fitting the tread of the staircase to a side beam.

  Conventionally, for example, as illustrated in FIG. 9, a staircase called an open staircase that is constructed without providing walls 4 on one side or both sides to produce an open space is known (for example, Patent Document 1 below) reference).

  The open staircase in FIG. 9 is provided with a wall 4 only on one side, and a tread plate 1 is passed between a side plate 3 fixed to the wall 4 and a side girder 2 provided on the opposite side. It has become. Moreover, by providing no kick plate between the treads 1, a more open space effect is achieved.

  In the construction of this open staircase, for example, as illustrated in FIG. 10, a rectangular fitting concave portion 11 is provided in the tread plate 1, and a rectangular fitting convex portion 22 corresponding to the fitting concave portion 11 is provided in the side beam 2. The tread board 1 is attached to the side girder 2 by providing the tread board insertion section 21 having the tread board 1 and inserting the tread board 1 into the tread board insertion section 21 of the side beam 2 and fitting the fitting concave portion 11 and the fitting convex portion 22 together. Things are often done.

  At this time, the width dimension W1 of the fitting concave portion 11 is made larger than the width dimension W2 of the fitting convex portion 22 so as to provide a clearance in the width direction so that the fitting concave portion 11 and the fitting convex portion 22 can be easily fitted. ing.

Some stairs are provided with a girder having a configuration similar to that of the side girder 2 in the approximate center of the tread board 1.
JP-A-6-322917

  However, by forming the fitting recess 11 of the tread plate 1 to be wider than the fitting projection 22 of the girder such as the side girder 2, the tread plate 1 may bend due to the load when the tread plate 1 is stepped on. A squeak noise may occur.

  This invention makes it a subject to provide the fixing structure of the step board of a staircase which can suppress effectively generation | occurrence | production of the creaking sound by the bending of the step board 1, etc. in view of the above situations.

  In order to solve the above problems, the fixing structure of the step board of the staircase of the present invention is as follows. First, the tread board is provided with a fitting recess, and the girder is provided with a tread board insertion part. The step board is fixed to the step board by inserting the tread board into the tread board insertion part of the girder and fitting the tread board to the girder by fitting the fitting concave part and the fitting convex part. It is formed wider than the convex part and has a horizontal plate part that extends between its left and right inner walls, and the fitting convex part of the girder has a horizontal groove part of the full width of the fitting convex part from the front to the back. The horizontal plate portion of the fitting concave portion is inserted into the horizontal groove portion of the fitting convex portion from the front surface when the tread plate is inserted into the tread plate insertion portion provided in the girder. To do.

  2ndly, the perforation as an adhesive sump heading from the front to the back is provided between the upper and lower inner walls of a horizontal groove part, It is characterized by the above-mentioned.

  According to the first aspect of the present invention, as described above, due to the presence of the horizontal plate portion provided in the fitting recess portion of the tread plate and the horizontal groove portion provided in the fitting projection portion of the girder, the tread plate is changed to the tread plate insertion portion of the girder. In the fitting state of the fitting recess and the fitting projection when inserted, the bonding area between the horizontal plate portion and the horizontal groove portion can be increased by the bonding area between the tread plate and the girder. Even if it is formed wider than the fitting convex part, the mutual fitting strength can be improved and tapping can be reduced.

  Also, it is possible to slide the tread plate in the width direction together with the slide of the horizontal plate portion in the horizontal groove portion by the difference in the width dimension between the fitting concave portion and the fitting convex portion, so that the girder and the side plate are fixed first. However, the treadle can be fitted to the girder and then slid in the width direction, that is, the horizontal direction, and can be fitted to the side plate, so that the treadle can be easily moved back without damaging the tread, girder, or side plate. Can be constructed.

  According to the second invention, the same effect as that of the first invention can be obtained, and the perforation as described above functions as an adhesive reservoir so that it adheres to the surface of the horizontal plate portion in the horizontal groove portion. The agent will spread more reliably. As a result, it is possible to prevent the adhesive from sticking out and reduce the possibility of poor adhesion, thereby reducing the variation in the fitting strength of each other and further effectively reducing the noise.

[First Embodiment]
1 to 5 show an embodiment of the present invention.

  In the present embodiment, first, the tread plate 1 is mounted across the side plate 3 (see FIG. 5 and FIG. 9) fixed to the wall 4 and the side beam 2 provided opposite thereto. The part attached to the side beam 2 is provided with a fitting recess 11 formed in a rectangular shape. The girder in the present invention is not limited to the side girder 2 and includes a girder disposed substantially at the center of the tread board 1. A structure similar to that of the side girders 2 can also be adopted for the girders disposed substantially at the center of the tread board 1.

  The fitting recess 11 is provided with a horizontal plate portion 12 extending between the left and right inner walls. The horizontal flat plate portion 12 is formed over the entire width and the entire length of the fitting concave portion 11, and is located at the approximate center in the thickness direction.

  On the other hand, the side girder 2 is mounted between the upper floor and the lower floor and is configured to support the step board 1 of each step. A tread board insertion portion 21 formed in an opening shape with a thickness that can be inserted is provided. In this tread board insertion part 21, a fitting convex part 22 is provided which is formed in a rectangular shape corresponding to the fitting concave part 11 of the tread board 1 and protrudes forward from the inner wall of the tread board insertion part 21. .

  Further, the fitting convex portion 22 is provided with a horizontal groove portion 23 extending from the front surface to the back. The horizontal groove portion 23 is formed over the entire width of the fitting convex portion 22.

  When the footboard 1 as described above is inserted into the footboard insertion portion 21 of the side beam 2 (see FIG. 2), the horizontal plate portion 12 of the fitting concave portion 11 is inserted into the horizontal groove portion 23 of the fitting convex portion 22 from its front surface. It will be in the state fitted (refer FIG. 3).

  Thereby, in the fitting state of the fitting concave portion 11 and the fitting convex portion 22, it is possible to increase the bonding area of the horizontal plate portion 12 and the horizontal groove portion 23, and the mutual bonding area of the tread plate 1 and the side beam 2, Therefore, even if the fitting concave portion 11 is formed wider than the fitting convex portion 22, the mutual fitting strength is improved, and the occurrence of trumbling due to the load when the stepping plate 1 is stepped on can be reduced. .

  Further, since the width dimension W1 of the fitting concave portion 11 is larger than the width dimension W2 of the fitting convex portion 22, the foot plate 1 is moved in the width direction together with the slide of the horizontal plate portion 12 in the horizontal groove portion 23 by the difference. Can be slid.

  As a result, as illustrated in FIGS. 5A and 5B, even if the side beam 2 is first fixed between the upper floor and the lower floor and the side plate 3 is fixed to the wall 4, After 1 is attached to the side beam 2, it can be fitted and attached to the fitting recess 31 of the side plate 3 simply by sliding it in the horizontal direction as it is and finely adjusting the horizontal position. Accordingly, the tread plate 1 can be easily constructed later without damaging any of the tread plate 1, the side girders 2, and the side plates 3, and a construction procedure having a higher degree of freedom than the conventional one can be realized.

  In addition, since the slide operation | movement is unnecessary after attachment of the foot board 1, it is preferable to fix the horizontal board part 12 in the horizontal groove part 23 with the adhesive agent (not shown).

  In this case, before inserting the footboard 1 into the footboard insertion portion 21 of the side beam 2, an adhesive is applied to the horizontal groove portion 23 or the horizontal plate portion 12 in advance, and the sliding operation is performed before the adhesive is cured. Will do. And after fitting attachment, the horizontal board part 12 is firmly fixed by hardening of an adhesive agent, and the tread board 1 is also fixed more firmly.

  According to this, combined with the increase in the adhesion area, the tapping reduction effect can be further improved.

[Second Embodiment]
By the way, when fixing the horizontal board part 12 to the horizontal groove part 23 using an adhesive agent, there exists a possibility that an adhesive agent may protrude at the time of a fitting.

  Therefore, as illustrated in FIGS. 6 to 8, it is a preferable form to provide a perforation 24 as an adhesive reservoir from the front to the back between the upper and lower inner walls of the horizontal groove 23.

  The perforations 24 are formed in a single cylindrical shape straight from the front opening to the back wall so as to be sandwiched between the upper and lower inner walls of the horizontal groove portion 23.

  As a result, the perforations 24 function as an adhesive reservoir, so that the adhesive spreads more reliably on the surface of the horizontal plate portion 12 in the horizontal groove portion 23 and prevents the adhesive from sticking out during fitting. The possibility of poor adhesion can be reduced. For this reason, there is no variation in the fitting strength between the horizontal plate portion 12 and the horizontal groove portion 23, and the tread plate 1 can be more firmly fixed to the side girders 2, and the tapping reduction effect can be realized more stably. The present embodiment is not limited to the side beam 2 but can also be applied to a beam disposed substantially in the center of the footboard 1.

BRIEF DESCRIPTION OF THE DRAWINGS (a) Side view before tread board installation which showed one Embodiment of this invention, (b) AA sectional view taken on the line. The front view before tread board attachment in embodiment of FIG. The longitudinal cross-sectional view after tread board attachment in embodiment of FIG. The cross-sectional view after footboard attachment in embodiment of FIG. The (a) (b) cross-sectional view for demonstrating the slide operation | movement of the tread board in embodiment of FIG. The (a) side view before tread board attachment which showed another one Embodiment of this invention, (b) AA sectional view taken on the line. The front view before tread board attachment in embodiment of FIG. The longitudinal cross-sectional view after tread board attachment in embodiment of FIG. The perspective view which illustrated the conventional open staircase. The (a) side view which illustrated the conventional tread board attachment structure, (b) AA sectional view taken on the line.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tread board 11 Fitting recessed part 12 Horizontal flat plate part 2 Side girder 21 Tread board insertion part 22 Fitting convex part 23 Horizontal groove part 24 Perforation 3 Side board 31 Fitting recessed part 4 Wall

Claims (2)

The tread board is provided with a fitting recess, and the girder is provided with a tread board insertion part having a fitting convex part. The tread board is inserted into the tread board insertion part of the girder and the fitting concave part and the fitting convex part are fitted. The fixing structure of the tread of the stairs that attaches the tread to the girder,
The fitting recess of the tread plate is formed wider than the fitting projection and has a horizontal plate portion that extends between the left and right inner walls,
The fitting projection of the girder has a horizontal groove with the full width of the fitting projection from the front to the back,
The step of the staircase is characterized in that when the step board is inserted into the step board insertion portion provided in the girder, the horizontal plate portion of the fitting concave portion is inserted and fitted into the horizontal groove portion of the fitting convex portion from the front surface thereof. Footboard fixing structure.   The stair tread plate fixing structure according to claim 1, wherein a perforation as an adhesive reservoir from the front to the back is provided between the upper and lower inner walls of the horizontal groove.

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