JP2007120053A - Staircase structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a staircase structure capable of preventing the generation of noises by low construction costs. <P>SOLUTION: A wooden reinforcing crosspiece 14 with a vertically-long rectangular cross section is provided in a suspended state and fixed on the backside of a treadboard 12 along the longitudinal direction of the treadboard 12. The reinforcing crosspiece 14 is connected and fixed to a lateral board 11 by means of a screw 15. The reinforcing crosspiece 14 is arranged in a place occupying back-side half of the depth of the treadboard 12. Additionally, a long groove 14a, which is elongated in the longitudinal direction of the reinforcing crosspiece 14 and opened in the undersurface of the reinforcing crosspiece, is formed in the reinforcing crosspiece 14, and the screw 15 for fixing the reinforcing crosspiece 14 to the treadboard 12 is driven into the treadboard 12 from the bottom surface of the long groove 14a. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a staircase structure.

As one type of staircase structure, Japanese Patent Application Laid-Open No. 9-228599 discloses that a metal base material having a groove shape is fixed between opposing side plates, a rubber elastic material is laminated on the base material, and between the side plates. A staircase structure is disclosed in which a step board to be disposed is laminated and fixed on a rubber elastic material.
According to this staircase structure, the vibration of the footboard is absorbed by the rubber elastic material, so that noise during the stair climbing can be prevented.
JP-A-9-228599

  Although the conventional staircase structure described above can prevent noise when ascending and descending the staircase, the metal base material and the rubber elastic body are indispensable, so the number of parts is increased compared to the normal staircase structure, which increases the construction cost. .

  The present invention has been made in view of such problems, and an object thereof is to provide a staircase structure capable of preventing noise at a low construction cost.

The invention according to claim 1 is a staircase structure, characterized in that a reinforcing bar having a vertically long cross-sectional shape is vertically fixed to the back surface of the tread plate along the longitudinal direction of the tread plate, and the reinforcing bar is connected to the side plate. And
Preferably, the reinforcing bar is disposed at a half of the depth side of the tread plate.
More preferably, the reinforcing bar is formed with a groove extending in the longitudinal direction and opening on the lower surface of the reinforcing bar, and a screw or a nail for fixing the reinforcing bar to the tread is inserted into the tread from the bottom of the groove. .

According to the staircase structure according to the present invention, since the reinforcing bar having a vertically long cross section is vertically fixed to the back surface of the tread plate, the apparent thickness of the tread plate is increased. In addition, since the reinforcing bar is connected to the side plate, the tread plate and the side plate are firmly connected via the reinforcing bar. Therefore, since the staircase rigidity is increased, it becomes difficult for the tread board and the side plate to vibrate when the stairs are raised and lowered, and noise can be reduced. Therefore, noise can be prevented simply by adding a reinforcing bar as a member compared to a normal staircase, and a low-noise staircase can be constructed at low cost.
Further, when the step is lowered, the heel hits the back half of the tread board and easily generates noise. However, by arranging the reinforcing bar in the inner half of the tread board, it is possible to effectively prevent the noise during the step down.
Furthermore, by forming a groove in the reinforcing bar having a vertically long cross section, when the reinforcing bar is fixed with a screw or a nail, the penetration dimension of the reinforcing bar part of the screw or nail can be shortened, and the fixing work of the reinforcing bar becomes easy. .

  A wooden reinforcing bar having a vertically rectangular cross section is vertically fixed to the back surface of the tread plate along the longitudinal direction of the tread plate, and this reinforcing bar is connected and fixed to the side plate with a nail. Reinforcing bars are arranged at the inner half of the depth of the footboard. A long groove extending in the longitudinal direction of the reinforcing bar and opening on the lower surface of the reinforcing bar is formed in the reinforcing bar, and screws, nails, and the like for fixing the reinforcing bar to the tread plate are driven into the tread plate from the bottom surface of the long groove.

  An embodiment of the present invention will be described below with reference to the drawings. FIG. 1, FIG. 2 and FIG. 3 show a staircase structure according to an embodiment of the present invention. The staircase structure 10 includes left and right side plates 11, a foot plate 12, a kick plate 13, and a reinforcing bar.

  A narrow groove 12a extending in the longitudinal direction (lateral direction) of the tread plate 12 is formed on the back surface of the front end portion of the tread plate 12, and the upper end portion of the kick plate 13 is fitted into the narrow groove 12a. The lower end portion of the kick plate 13 is fixed to the rear end portion of the lower tread plate 12 with screws, nails or an adhesive. A reinforcing bar 14 is suspended and fixed to the back surface of the tread plate 12.

  The reinforcing bar 14 is made of wood and is suspended from the back surface of the tread board 12. This reinforcing bar 14 has a vertically long rectangular cross-sectional shape, and the vertical size of the cross-sectional shape is processed to be 2 to 3 times the horizontal size. In addition, a long groove 14 a that opens on the lower surface of the reinforcing bar 14 is formed at the center of the lower surface along the longitudinal direction of the reinforcing bar 14. The long groove 14 a has a width in which the head of the screw 15 can be inserted and a depth that is about half of the vertical dimension of the reinforcing bar 14. The reinforcing bar 14 is fixed to the footboard 12 by driving a screw 15 into the footboard 12 from the long groove 14a. The reinforcing bar 14 is attached to a portion on the back side from the center line n (see FIG. 1) in the depth direction of the tread plate 12, that is, a region on the back side half. In the present embodiment, the tread board 12 is disposed at a position about 2/3 depth side from the front end of the tread board 12.

  A side hole 11a is formed in the inner surface of each side plate 11 as shown in FIG. The tread plate 12 to which the reinforcing bar 14 is fixed with the screw 15 is fixed to the side plate 11 by fitting the left and right ends into the relief holes 11a and driving wedges 16 into the gaps between the relief holes 11a. Further, the reinforcing bar 14 is fixed to the side plate 11 with screws 15 driven obliquely. In addition, a receiving plate 18 is fitted between the lower surface of the lowermost reinforcing bar 14 and the floor surface 17, and the reinforcing bar 14 is supported by the floor surface 17.

  The staircase structure 10 according to the present embodiment is as described above. Since the reinforcing bar 14 having a vertically long cross section is vertically fixed to the back surface of the tread board 12, the apparent thickness of the tread board 12 is increased. In addition, since the reinforcing bar 14 is fixed to the side plate 11, the tread plate 12 and the side plate 11 are firmly connected via the reinforcing bar 14. Therefore, since the rigidity of the staircase 10 increases, the tread plate 12 and the side plate 11 are less likely to vibrate when the stairs are raised and lowered, and noise can be reduced.

  Noise can be prevented simply by adding a reinforcing bar 14 as a member compared to a normal staircase, and a low noise staircase can be constructed at low cost.

  When descending, the kite hits the back half of the tread board 12 and is likely to generate noise. The noise at the time can be effectively prevented.

  Since the long groove 14a is formed in the longitudinal cross section of the reinforcing bar 14 along the longitudinal direction, when the reinforcing bar 14 is fixed with the screw or the nail 15, the penetration dimension of the portion of the reinforcing bar 14 of the screw or the nail 15 can be shortened. Fixing work of the reinforcing bar 14 becomes easy.

Next, a step structure 20 according to another embodiment of the present invention is shown in FIGS. In the staircase structure 20, a receiving surface 21 a for placing the tread plate 12 is formed on the upper end portion of the side plate 21. The tread plate 12 is placed on the side plate 21 by being placed on the receiving surface 21a.
In addition, since the other structure is the same as the staircase structure based on Example 1, the same code | symbol is attached | subjected to the same component and description is abbreviate | omitted.

  In the first embodiment and the second embodiment, the reinforcing bar 14 has a vertically long cross-sectional shape and is formed with a long groove 14a extending in the longitudinal direction. However, another example of the reinforcing bar is shown in FIG. The reinforcing bar 30 shown in FIG. 6A is made of a wood and has a head groove 30 a for passing the head 15 a such as a screw 15 along the longitudinal direction of the reinforcing bar 30. The reinforcing bar 31 shown in FIG. 6B is made of wood and has a screw through hole 31b in addition to the head groove 31a. The reinforcing bar 32 shown in FIG. 6C is a plastic molded product or a metal punched product, has a T-shaped cross section, and has two rows of nail holes 32a on the upper and lower sides. The reinforcing bar 33 shown in FIG. 6 (d) is a plastic molded product, a metal punched or bent product, has a cross-sectional shape, and a row of nail holes 33a is formed on the upper surface along the longitudinal direction. .

It is a side view which shows typically the staircase structure concerning 1st Example of this invention. It is a front view which shows typically the side plate, footboard, and reinforcement bar which comprise the principal part of the staircase structure. It is a perspective view which shows the principal part of the staircase structure. It is a side view which shows typically the staircase structure concerning 2nd Example of this invention. It is a front view which shows typically the side plate, footboard, and reinforcement bar which comprise the principal part of the staircase structure. It is explanatory drawing which shows the Example of the reinforcement bar | burr used for the staircase structure of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10, 20 ... Staircase structure, 11 ... Side board, 12 ... Tread board, 13 ... Kick board, 14, 30, 31, 32, 33 ... Reinforcement bar, 14a ... Long groove, 15 ... Nail.

Claims (3)

A staircase structure characterized in that a reinforcing bar having a vertically long cross-sectional shape is vertically fixed to the back surface of the tread plate along the longitudinal direction of the tread plate, and the reinforcing bar is connected to the side plate. The staircase structure according to claim 1, wherein the reinforcing bar is arranged in a half of the depth side of the footboard. A groove that extends in the longitudinal direction of the reinforcing bar and that opens on the lower surface of the reinforcing bar is formed in the reinforcing bar, and a screw or a nail for fixing the reinforcing bar to the tread is inserted into the tread from the bottom of the groove. The staircase structure according to claim 1 or 2.

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