JP2016033330A - Fixing structure of stair riser and fixing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To securely fix a stair riser using an adhesive in a state of being engaged with a riser fitting groove formed on a rear face of a step board.SOLUTION: An adhesive 6 is applied to a riser 2 along a recessed groove 4 which is formed on an upper butt end 21 of the riser 2 at the butt end side. After engaging the upper end part of the riser with a riser fitting groove 5, the upper butt end of the riser is brought into close contact abutting on the groove bottom 51 of the riser fitting groove. With this, the adhesive applied to the recessed groove at the butt end side is expanded to the upper butt end exceeding the recessed groove at the butt end side. At least the recessed groove at the butt end side and the upper butt end exceeding the recessed groove at the butt end side of the riser are bonded and fixed to the groove bottom of the riser fitting groove with the adhesive. The adhesive is further extended to the front face and the rear face of the riser butt end part to bond and fix an upper end part surface 22 of the riser to a front inner wall surface 52 of the riser fitting groove. By bonding and fixing the rear face 23 of the upper end part of the riser to a rear inner wall surface 53 of the fitting groove in the riser, a stronger fixing structure is obtained.SELECTED DRAWING: Figure 2

Description

The present invention relates to a fixing structure and fixing method for a stair kick plate.

In general, the construction of a staircase including a side plate, a tread plate, and a kick plate is performed in the following order.
1 Fix the side plate to the wall.
2 The step board of the staircase is fitted into the tread board fitting groove formed in the side plate, and a wedge is driven in and fixed to the side plate.
3 Apply adhesive to the top end of the kick plate.
4 The left and right end portions of the kick plate are fitted into the kick plate fitting groove of the side plate, and the upper end of the kick plate is fitted into the kick plate fitting groove on the back surface of the tread plate.
5 Fix the kick board to the side board and the tread board with a fixing tool such as a wood screw.

However, the following problems have been pointed out in the fixing structure of the kick board and the tread board by such construction.

That is, in the adhesive application process of 3 above, particularly when an adhesive having a high viscosity such as a urethane adhesive is used, the adhesive is separated from the adhesive surface in the middle, and the adhesive is applied to the adhesive surface. There are cases where a coated surface and a non-coated surface are not applied, and a portion with a large amount of application and a portion with a small amount of application also occur on the coated surface.

In a non-application surface or a portion where the application amount is small, even if the upper end of the kick plate is inserted into the kick plate fitting groove on the back surface of the tread plate in 4 above, a portion that is not fixed between the kick plate and the tread plate is created. The kick board and the tread board rub against each other at the fixed part, which causes a tumble during walking.

On the other hand, if the amount of adhesive applied is too large, the adhesive D overflows from the kick plate fitting groove when the upper end of the kick plate A is fitted into the kick plate fitting groove C on the back surface of the tread plate B in the above step 4. If left as it is, the overflowing adhesive may solidify and impair the beauty (see FIG. 7). For this reason, the overflowing adhesive agent has to be wiped off and removed, which takes time and labor. If the application amount of the adhesive is made small in order to prevent the overflow of the adhesive, the fixing strength between the kick board and the tread board is lowered, and a tumble occurs during walking as described above.

Further, as another problem, when the fixing tool E such as a wood screw is driven obliquely from the back side of the kick board A toward the tread board B in the fixing process of 5 above, the tip of the fixing tool E is Sometimes the back of the kick plate A slips, and the fixture E may not enter the kick plate A at a predetermined position and angle. In this case, the fixture E is driven between the kick plate fitting groove C of the tread plate B and the back surface of the kick plate A, and the original driving position and angle of the fixture E are shifted upward accordingly. In some cases, the fixture E penetrates the tread B and the tip protrudes to the front side of the tread B (see FIG. 8), or the surface of the tread B is swollen. Furthermore, the fixture E may destroy the entrance of the kick plate fitting groove C and the upper end portion of the kick plate A, and the fixation between the kick plate A and the tread plate B may not be firmly performed.

As a measure for improving the former problem, in Patent Document 1, an inclined surface is formed so as to have a tapered shape at the upper end portion of the kick plate, and the inner surface of the kick plate fitting groove on the back surface of the tread plate is made to correspond to the inclined surface. With the inclined surfaces joined together, the upper end of the kick plate is fitted into the kick plate fitting groove on the back of the tread plate, and the rear upper end of the kick plate and the rear of the kick plate fitting groove The inner wall surface is fixed with an adhesive. According to this, even if the adhesive overflows, it only appears on the back surface side of the kick plate and cannot be seen from the front surface side, so that the appearance is not impaired.

Moreover, as a measure for improving the latter problem, in Patent Document 2, a recess is formed so as to continue to the rear of the kick plate fitting groove on the back surface of the tread plate, and an inclined surface is formed from the recess portion to the back surface of the tread plate. As a result, the fitting state of the kick plate can be confirmed through the inclined surface, and the head of the nail can be placed in the recessed portion when nailing, so that the tread can be easily prevented from getting in the way. It is supposed to be able to perform hammering work.

Japanese Patent No. 3287823 CD-ROM of actual application No. 4-60084 (Japanese Utility Model Application No. 6-20703)

However, according to the prior art described in Patent Document 1, the adhesive overflowing to the upper end on the back side of the kick plate does not impair the appearance, but in the fixing process of 5 above, a fixing tool such as a wood screw is used. The place to be driven at the time of driving from the back side upper end of the kick plate becomes difficult to understand due to the solidified adhesive, and a new problem arises that positioning of the front end of the fixture cannot be specified.

Also, since the kick plate is fixed in the kick plate fitting groove only by bonding at the joint surface between the upper end on the back side of the kick plate and the inner wall surface behind the kick plate fitting groove, the fixing strength is insufficient. A gap is formed between the portion other than the joint surface, for example, between the upper end on the surface side of the kick plate and the inner wall surface in front of the kick plate fitting groove. When walking, these rubbed and sometimes struck.

On the other hand, according to the prior art described in Patent Document 2, since the recessed portion is formed continuously behind the kick plate fitting groove on the back surface of the tread plate, the upper end portion on the back surface side of the kick plate cannot be supported, and the fixed strength And the stability is insufficient. Moreover, since this recessed part is formed in sufficient magnitude | size so that the fixing location of a fixing tool can be visually observed, the intensity | strength of a tread is reduced. Furthermore, the driving angle when the fixing tool is driven from the upper end on the back surface side of the kick plate in the fixing step 5 is not fixed, and as described above with reference to FIG. In some cases, problems such as projecting to the surface of the tread board or swelling of the tread surface may occur. In particular, in this conventional technique, nailing is performed from the inside of the recess, so that the depth of nailing becomes shallow, and there is a high possibility that such a problem occurs when the driving angle is shifted even a little.

Accordingly, the present invention aims to solve such disadvantages of the prior art and fix the stair kick plate with an adhesive in a state where it is fitted in the kick plate fitting groove on the back of the tread plate. In addition, a novel staircase kick plate fixing structure and fixing that prevents the adhesive from overflowing from the groove for fitting the kick plate, gives sufficient fixing strength and stability, and does not cause stepping during walking. Is to provide a method.

In order to solve this problem, the present invention according to claim 1 is a structure for fixing a kick plate that fixes the kick plate to a groove for fitting the kick plate formed on the back surface of the step plate of the staircase, Has a kerf-side groove extending in the longitudinal direction, and when the upper end of the kick plate is fitted in the kick-plate fitting groove, at least other than the kerf-side groove and the kerf-side groove of the kick plate The upper end lip of the adhesive is fixedly bonded to the bottom surface of the kick plate fitting groove.

According to a second aspect of the present invention, in the fixing structure of the kick plate according to the first aspect, in the state in which the upper end portion of the kick plate is fitted in the kick plate fitting groove, the surface of the upper end portion of the kick plate is further kicked. It is characterized in that it is bonded and fixed to the front inner wall surface of the plate fitting groove, and the back surface of the upper end portion of the kick plate is bonded and fixed to the rear inner wall surface of the kick plate fitting groove.

According to a third aspect of the present invention , there is provided a method of fixing a kick plate in which the kick plate is fixed to a groove for fitting the kick plate formed on the back surface of the step board of the staircase, so as to extend in the longitudinal direction to the upper end end of the kick plate. After applying the adhesive along the kerf-side recessed groove formed on the top, the upper end of the kick plate is fitted into the kick plate fitting groove, and the upper butt end of the kick plate is fitted to the groove bottom surface of the kick plate fitting groove. The adhesive applied to the kerf-side ditch is spread to the upper end kerf other than the kerf-side ditch, and by the adhesive, at least the kerf-side ditch and the kerf-side ditch of the kick plate The upper end lip other than the above is adhered and fixed to the groove bottom surface of the kick plate fitting groove.

According to a fourth aspect of the present invention, in the fixing method of the kick board according to the third aspect, the adhesive applied to the groove on the wooden mouth side of the kick board is further wound to the front and back sides of the upper end portion of the kick board, The upper end surface of the kick plate is bonded and fixed to the front inner wall surface of the kick plate fitting groove by an adhesive, and the upper surface of the upper end portion of the kick plate is bonded and fixed to the rear inner wall surface of the kick plate fitting groove. .

According to the first aspect of the present invention, the groove on the top end of the kick plate is formed by extending the groove on the top end in the longitudinal direction. Therefore, when the adhesive is applied to the top end of the kick plate, Since the adhesive can be applied linearly along the side concave groove, the adhesive can be applied easily. The adhesive is generally applied while pushing out what is contained in the tube. At this time, even if the viscosity of the adhesive is high, there are two points at the entrance of the groove side groove or three points including the bottom. Since the adhesive comes into contact with the application surface, the adhesive is not interrupted, and the adhesive can be uniformly applied without unevenness.

In addition, when the adhesive applied along the cutout side groove is inserted until the upper end of the riser plate hits the back of the riser fitting groove, the surface area is increased due to the presence of the cutout groove. Since these are joined and fixed between the top edge of the plate and the groove bottom surface of the kick plate fitting groove, the fixing strength can be increased.

In addition, even if the amount of adhesive applied increases accidentally, excess adhesive is accommodated in the groove on the side of the mouth, so that the overflow from the kick plate fitting groove to the front and back surfaces of the top of the kick plate Can be prevented. Since the adhesive contained in the groove on the kerf side is solidified in the groove, the groove on the kerf side is not left as a space in the state after the adhesive is solidified. Since the adhesion area between the groove and the groove bottom surface is increased by the amount of the recess on the side of the mouth, a firm fixed state can be obtained.

According to the second aspect of the present invention, part of the adhesive applied along the mouth end side groove overflows on both the front and back sides of the upper end of the kick plate, and the front and rear surfaces of the upper end of the kick plate and the fitting of the kick plate It enters between the front and rear inner wall surfaces of the joint groove, and these are joined and fixed. Accordingly, the upper end portion of the kick plate is firmly bonded and fixed in the kick plate fitting groove on three surfaces, and there is no occurrence of trumbling due to friction between them during walking.

According to the third aspect of the present invention, the upper end portion of the kick plate is fitted into the kick plate fitting groove, and the upper end lip of the kick plate is abutted against the groove bottom surface of the kick plate fitting groove. To spread the adhesive applied to the kerf-side groove to the upper-end kerf other than the kerf-side groove, and with the adhesive, at least the kerf-side groove and the upper-end kerf other than the kerf-side groove of the kick plate Adhering and fixing to the bottom surface of the plate fitting groove. Therefore, as already described with respect to the present invention according to claim 1, there is obtained an effect that the kick plate can be firmly fixed to the kick plate fitting groove.

In addition, the same effect as described above for the present invention according to claim 1 can be obtained.

According to the fourth aspect of the present invention, the adhesive applied to the grooved groove on the top of the kick plate is further turned to the front and back sides of the upper end portion of the kick plate, and the surface of the upper end portion of the kick plate is formed by the adhesive. Is bonded and fixed to the front inner wall surface of the kick plate fitting groove, and the back surface of the upper end portion of the kick plate is bonded and fixed to the rear inner wall surface of the kick plate fitting groove. Therefore, as described above with regard to the present invention according to claim 3, the effect that the kick plate can be firmly fixed by the kick plate fitting groove is obtained.

It is a perspective view which shows an example of the staircase structure to which this invention is applied. It is a top sectional view showing one embodiment of the present invention about a kick board used for this staircase. It is explanatory drawing which shows the kick board fixation operation | work at the time of constructing stairs using the kick board of FIG. In the drawing, (a) to (d) show the order of steps, (a-1) is a perspective view, and (a-2) and (b) to (d) are sectional views. It is a top sectional view of a kick board by other embodiments of the present invention. It is sectional drawing which shows the fixation structure of the kick board obtained by the kick board fixing operation | work using the kick board of FIG. It is sectional drawing which shows the other example of the fixation structure of the kick board obtained by the kick board fixing operation | work using the kick board of FIG. It is sectional drawing which shows the state in which the adhesive overflowed to the surface side of the kick board in the fixing structure of the kick board of the staircase by a prior art. It is sectional drawing which shows the state which penetrated the surface of the tread board in which the driving angle of the fixing tool shifted | deviated at the time of fixing a kick board to a tread board in the fixing structure of the step board according to another prior art.

FIG. 1 is a perspective view showing an example of a staircase structure to which the present invention is applied, in which kick plates 2 and treads 3 are alternately stretched between a pair of side plates 1 and 1. The staircase structure has various shapes such as a straight shape, an L shape, and a spiral shape, but the present invention can be applied to any of them.

FIG. 2 shows the shape of the upper end portion of the kick plate 2 according to one embodiment of the present invention, and the upper end end is formed with a mouth end side groove 4 extending in the longitudinal direction (width direction in the construction state). The cross-sectional shape of the mouth end side groove 4 is arbitrary, and may be a U-shaped or V-shaped cross-sectional shape in addition to the illustrated rectangular shape. Moreover, it is preferable that the pit side concave groove 4 is formed so that the center of the width thereof coincides with the center in the thickness direction at the upper end lip of the kick plate 2.

It is preferable that the width of the kerf-side concave groove 4 is formed to be about 1/3 to 2/3 of the thickness of the kick plate 2. If the width of the kerf-side ditch 4 exceeds 2/3 of the thickness of the kick plate 2, the upper end protrusions 21, 21 left on both sides of the kerf-side ditch 4 are relatively thin. Accordingly, the adhesion area of the kick plate fitting groove 5 (described later) formed on the back surface of the tread board 3 with respect to the groove bottom surface 51 is reduced, and the adhesive strength is lowered. Further, when the upper end portion of the kick plate 2 is pushed toward the groove bottom surface 51 of the kick plate fitting groove 5, the thin upper end protruding portions 21 and 21 may be damaged by the impact. On the other hand, when the width of the kerf-side concave groove 4 becomes narrower than less than 1/3 of the thickness of the kick plate 2, the kick plate 2 with the adhesive applied to the upper end lip is used as the kick plate fitting groove 5. When it is inserted, it becomes difficult for the adhesive to enter the grooved groove 4, and most of it overflows from the kick plate fitting groove 5 and may flow down along the front and back surfaces 22, 23 of the upper end portion of the kick plate. In addition, since the adhesive does not sufficiently enter the mouth end side groove 4, a space is generated inside, and a firm fixing structure cannot be obtained.

The depth of the wooden mouth side concave groove 4 is 3 mm or less, and particularly preferably 0.5 to 2 mm. If the kerf-side ditch 4 is too deep, most of the adhesive applied to the upper end kerf will enter the kerf-side ditch 4, and the adhesive when the kick plate 2 is fitted into the kick plate fitting groove 5. Does not reach the front and rear inner wall surfaces of the kick plate fitting groove 4, so that the kick plate 2 and the tread plate 3 are not sufficiently fixed, and the non-bonded surfaces may rub against each other when walking. . On the other hand, if the mouth end side groove 4 is too shallow, when the adhesive is applied to the upper end mouth end 21 of the kick plate 2, the adhesive does not easily come into contact with the two points at the entrance of the mouth end side groove 4, so that the adhesive is removed. It becomes easy to separate from the application surface, and it becomes difficult to apply a certain amount evenly. Furthermore, when the upper end portion of the kick plate 2 is fitted into the kick plate fitting groove 5, the adhesive may not fit in the cut end side groove 4 and may overflow from the cut end side groove 4.

The size (width, depth) of the kerf-side concave groove 4 is determined in consideration of the above. As an example, in the case of the kick plate 2 having a thickness of 9 mm, the mouth end side concave groove 4 having an opening width of 3 mm and a depth of 1 mm is formed.

With reference to FIG. 3, a description will be given of a kick plate fixing operation when constructing a stair using the kick plate 2 of FIG.

First, as shown in FIGS. 3 (a-1) and 3 (a-2), the adhesive 6 is extruded from the adhesive tube 7 along the kerf-side recessed groove 4 formed in the upper end lip of the kick plate 2. Apply while. The adhesive 6 is not particularly limited, but generally, a urethane adhesive, a vinyl acetate adhesive, or the like is used.

The adhesive 6 is applied along the mouth end side groove 4, and at this time, the upper surface of the upper end protrusions 21, 21 on both sides of the mouth end side groove 4 has 1 non-adhesive portion near the front and back surfaces, respectively. It is good to apply so that about 2 mm is left. By doing in this way, even if a kick board is inclined a little at the time of construction, while preventing the adhesive 6 from dripping on the front and back of the kick board 2, it is used as a standard of the appropriate application amount of the adhesive 6. be able to. In order to realize this, for example, when the groove-side concave groove 4 having a rectangular cross section is formed with a width of about 1/3 of the thickness of the kick plate 2, the adhesive 6 is centered on the thickness of the kick plate 2. It is good to use what cut | disconnected the front-end | tip of the adhesive tube 7 so that it may apply | coat with the width | variety of about 2/3 of this thickness centering on width. As a more specific example, as described above, when the top end of the kick plate 2 having a thickness of 9 mm has the opening width 3 mm and the cross-sectionally rectangular mouth end side groove 4 is applied, an adhesive is applied. What cut | disconnected the front-end | tip of the adhesive tube 7 so that 6 may become a diameter of about 6 mm is good.

The amount of the adhesive 6 applied is preferably 10 to 35 g / m with respect to the kick plate 2 having a width of 750 to 1000 mm and a thickness of 5 to 15 mm, though it depends on the size of the grooved groove 4. In this example, in the case of the kick plate 2 having a length (width) of 900 mm and a thickness of 9 mm, an adhesive application amount of 21.7 g / m was adopted at the upper end lip. Thus, by adjusting the application surface and the application amount of the adhesive 6 with respect to the top end of the kick plate 2, an appropriate adhesive application state can be obtained, and the adhesive 6 is applied in an excessive amount. It is possible to prevent inconveniences such as overflowing from the kick plate fitting groove 5 and an excessive amount of the adhesive 6 being applied, resulting in a decrease in fixing strength and a squealing.

Next, as shown in FIG. 3 (b), the upper end portion of the kick plate 2 with the adhesive 6 applied to the upper end lip is fitted into the kick plate fitting groove 5 formed on the back surface 32 of the tread plate 3. To go. As illustrated, the kick plate fitting groove 5 is formed to have a groove width dimension slightly larger than the thickness of the kick plate 2.

Then, as shown in FIG. 3C, when the upper end projecting portions 21, 21 of the kick plate 2 are in contact with the groove bottom surface 51 of the kick plate fitting groove 5, the upper end projecting portions 21, 21 of the kick plate 2. The adhesive 6 applied to the upper surface of the metal plate is crushed and enters the grooved groove 4 without any gaps, and expands in the back of the kick plate fitting groove 5, and the upper end protrusions 21, 21 of the kick plate 2. Not only between the entire upper end lip and the groove bottom surface 51 but also inside the kick plate fitting groove 5 and also into the front and back surfaces 22 and 23 side of the kick plate 2 to raise the kick plate fitting groove 5. Between the front inner wall surface 52 and the rear inner wall surface 53.

In this state, as shown in FIG. 3 (d), the kick plate 2 is pressed against the front inner wall surface 52 of the kick plate fitting groove 5. Thereby, the upper end portion on the surface 22 side of the kick plate 2 is bonded and fixed to the front inner wall surface 52 of the kick plate fitting groove 5 by the adhesive 6 interposed therebetween, and the top end surface (upper end of the kick plate 2). Between the upper surface of the protrusions 21 and 21 and the bottom surface 51 of the kick plate fitting groove 5 and between the upper end on the back surface 23 side of the kick plate 2 and the rear inner wall surface 53 of the kick plate fitting groove 5. Since it is bonded and fixed by the intervening adhesive 6, the upper end portion of the kick plate 2 is bonded and fixed to the kick plate fitting groove 5 on three surfaces, and an extremely strong fixing structure is obtained. Further, the adhesive 6 is interposed between the kick plate 2 and the kick plate fitting groove 5, and they do not rub against each other, so that they do not step on the foot during walking. Even if the excessive amount of the adhesive 6 overflows from the kick plate fitting groove 5, it flows down from the rear side where the relatively large gap is formed to the back surface 23 side of the kick plate 2. Thus, even if the adhesive is solidified in this portion, it is hidden from the surface side and cannot be seen, so the aesthetic appearance is not impaired.

FIG. 4A shows the shape of the upper end portion of the kick plate 2A according to another embodiment of the present invention. Like the kick plate 2 of Example 1, the cut end side groove 4 extending in the longitudinal direction has an upper end cut end. In addition, a back side groove 8 extending in the longitudinal direction is formed on the back side 23 near the upper end. The configuration, shape, dimensions, and the like of the kerf side ditch 4 are the same as those of the first embodiment. The effects of the kerf side ditch 4 when the adhesive 6 is applied and solidified are the same as those of the first example. Since it is the same, description is abbreviate | omitted here.

The back-side concave groove 8 is located at a position where its upper end is substantially flush with or slightly lower than the tread plate back surface 22 in a state where the upper end portion of the kick plate 2A is fitted and fixed to the kick plate fitting groove 5 of the tread plate back surface 32. Formed. By forming the back-side concave groove 8 at such a position, the tip of the fixing tool 9 is prevented from entering the kick plate fitting groove 5 when the fixing tool 9 (FIG. 5) is driven. Will be driven at the correct angle, causing the inconvenience that the fixture 9 penetrates the tread plate 3 and the tip projects from the tread surface 31 or causes the tread surface 31 to bulge as in the case of the prior art. In addition, breakage of the inlet of the kick plate fitting groove 5 can be prevented.

The cross-sectional shape of the back-side concave groove 8 is not particularly limited as long as it enables the fixing tool 9 to be driven at a predetermined position and angle, but preferably has a square shape as shown in FIG. The cross-sectional shape is a right-angled triangular cross-sectional shape having an upper side that is substantially perpendicular to the rear surface 23 of the kick plate 2A (substantially parallel to the upper end lip 21) and an oblique side that extends from the back end of the upper side to the rear surface 23 (see FIG. 4 (b)). In the latter case, it is preferable to form the oblique side so that the inclination angle is substantially the same as a predetermined driving angle of the fixture 9. Further, the size is not particularly limited as long as the above-described effects can be exhibited, but generally, the groove width is preferably about 3 to 10 mm, and the depth is If it is too large, the strength of the kick plate 2A is lowered, so that it is generally 2 mm or less, preferably about 0.5 to 1 mm as the depth to which the tip of the fixture 9 is hooked and held firmly. As an example, in this embodiment, the back side concave groove 8 having an opening width of 3 mm and a depth of 1 mm is 12 mm from the upper end of the 9 mm-thick kick plate 2A (same as the depth of the kick plate fitting groove 5). It is formed in the position to leave.

In addition, when MDF is used as the kick plate 2A, it is preferable to form the back-side concave groove 8 by cutting the hard layer on the back surface 23 side of the kick plate. MDF is a plate-like body in which wood fibers are densely solidified with an adhesive, and a high-density hard layer is formed on the front and back surfaces. That is, the average density of the MDF is about 0.7~0.9g / cm ^3, hard layer having a density of about 0.9~1.1g / cm ³ on the front and back surface is formed, the intermediate layer 0 It is formed as a soft layer of about 55 to 0.65 g / cm ³ . The high-density hard layer is difficult to position because the tip of the fixture 9 is difficult to enter, and since it becomes slippery on the surface, the MDF hard layer is shaved so that a relatively soft layer is exposed on the groove bottom surface. It is preferable to form the concave groove 8 on the back surface. In this way, the fixture 9 can be easily driven and can be driven at a predetermined position without causing slip. Moreover, since the head of the fixture 9 is caught by the hard layer portion, it is firmly held, and the entrance corner of the back-side concave groove 8 is not damaged. In general, if the back-side groove 8 is formed by cutting out from the front surface (the back surface 23 of the kick plate) to a depth of about 1 to 2 mm, it penetrates the hard layer and is relatively soft on the groove bottom surface of the back-side groove 8. Layer (layer having a density of about 0.7 to 0.9 g / cm ³ ) appears, and the above-described effects can be exhibited.

Hereinafter, a description will be given of a kick plate fixing operation when the stair of FIG. 1 is constructed using the kick plate 2A of FIG. 4. After applying an adhesive to the upper end of the kick plate 2A, the upper end portion of the kick plate 2A is applied. The steps from pressing against the groove bottom surface 51 of the kick plate fitting groove 5 and pressing the surface 22 against the front inner wall surface 52 of the kick plate fitting groove 5 to adhere and fix are already described with reference to FIG. Since it is the same as described above, the description thereof is omitted.

After bonding and fixing in this way, the fixture 9 is driven obliquely upward from the back side groove 8 to fix the kick plate 2A to the tread plate 3 (FIG. 5). As described above, the back-side concave groove 8 is clearly indicated to the operator as a place where the fixture 9 is driven, so that no positional deviation occurs. Further, since the fixture 9 does not slide along the back surface 23 of the kick plate 2A, the fixture 9 can be driven at a predetermined angle, and the fixture 9 penetrates the tread plate 3 and its tip protrudes from the tread surface 31. There is no inconvenience such as swelling on the surface 31. Therefore, the driving operation of the fixture 9 can be performed accurately and easily.

In the fixing structure of the kick plate 2A obtained in this way, as already described in the first embodiment, the upper end portion of the kick plate 2A is bonded and fixed to the kick plate fitting groove 5 on three surfaces. In addition, since the kick plate 2A is fixed to the tread plate 3 by the fixture 9 driven at a predetermined angle from a predetermined position, an extremely strong fixing structure can be obtained, and treading during walking can be prevented. .

As described above in Example 1, in principle, the adhesive 6 is applied to the top end of the kick plate 2A by adjusting the coating amount so as not to overflow from the kick plate fitting groove 5. Therefore, since the back surface side recessed part 8 is not plugged up with the adhesive 6, the effect that the driving operation of the fixture 9 can be performed accurately and easily as described above is exhibited. On the other hand, when the upper end lip 21 and the surface 22 of the kick plate 2A are pressed into contact with the groove bottom surface 51 and the front inner wall surface 52 of the kick plate fitting groove 5 by driving the fixture 9, the adhesive 6 is pushed into the kick plate fitting groove. 5 may overflow from the rear side of 5 and flow down along the back surface 23 of the kick plate 2A, but in this case, the adhesive 6 enters the back side concave groove 8 to prevent further flow down, Since the adhesive hardened in the back-side concave groove 8 serves to hold and fix the head of the fixture 9 firmly, a stronger and more stable fixing structure can be obtained (FIG. 6). Also in this case, since the back surface side concave portion 8 is not blocked by the adhesive 6 when the fixing tool 9 is driven, the effect that the driving operation of the fixing tool 9 can be performed accurately and easily is not impaired.

DESCRIPTION OF SYMBOLS 1 Side board 2, 2A Kick board 21 Upper end protrusion part or upper end wooden mouth 22 Front surface 23 Back surface 3 Tread board 31 Front surface 32 Back surface 4 Deck side groove 5 Kick board fitting groove 51 Groove bottom surface 52 Front inner wall surface 53 Adhesive tube 8 Back side groove 9 Fixing tool

Claims (4)

A kick plate fixing structure for fixing the kick plate to the kick plate fitting groove formed on the back surface of the step board of the staircase, and the upper end of the kick plate is formed with a groove on the side of the mouth extending in the longitudinal direction. In the state where the upper end portion of the kick plate is fitted into the kick plate fitting groove, at least the upper end butt of the kick plate other than the kerf side concave groove and the kerf side concave groove is bonded and fixed to the groove bottom surface of the kick plate fitting groove. The structure for fixing the kick board, characterized in that In the state where the upper end portion of the kick plate is fitted into the kick plate fitting groove, the upper end surface of the kick plate is further bonded and fixed to the front inner wall surface of the kick plate fitting groove, and the rear surface of the upper end portion of the kick plate is kicked. 2. The structure for fixing a kick plate according to claim 1, wherein the fixing structure is fixed to the rear inner wall surface of the plate fitting groove. A kick plate fixing method for fixing a kick plate to a kick plate fitting groove formed on the back surface of a step board of a staircase, wherein the upper end of the kick plate is extended in the longitudinal direction at the upper end of the kick plate. After applying the adhesive along, by fitting the upper end of the kick plate into the kick plate fitting groove, the upper end lip of the kick plate abuts against the groove bottom surface of the kick plate fitting groove, Spread the adhesive applied to the kerf-side ditch into the upper-end kerf other than the kerf-side ditch, and use the adhesive to fit at least the kerf-side ditch and the upper-end kerf of the kick plate into the kick plate A method for fixing a kick plate, characterized by adhering and fixing to a groove bottom surface of a groove. The adhesive applied to the groove on the wooden mouth side of the kick plate is further turned to the front and back sides of the upper end portion of the kick plate, and the adhesive causes the upper end surface of the kick plate to move to the front inner wall surface of the kick plate fitting groove. 4. The method for fixing a kick plate according to claim 3, wherein the upper surface of the kick plate is bonded and fixed to the rear inner wall surface of the kick plate fitting groove.