JP2021134584A - Fixing structure of riser board, construction method of riser board, and riser board fixing member used for them and riser board - Google Patents

Abstract

To provide a novel technique that makes it easier to fix a riser board of stairs to a tread board of an upper stage and also prevents the treading noise.SOLUTION: A riser board fixing member 10 has a main body portion 11 having a rectangular cross section, a front protruding portion 12, a tapered upward protruding portion 13, and a fixture insertion hole 16. After fitting the front protruding portion into a concave groove 24 formed on a rear surface 23 of a riser board 20, to temporarily fix, fix or integrating the same, and applying an adhesive 40 to a riser board upper end surface 21, the upper end of the riser board is inserted into a riser board fitting groove 33 formed on a back surface 32 of a tread board 30, and the riser board upper end surface is pressed against a groove bottom surface 33a of the riser board fitting groove to be adhered. Here, the upward protruding portion of the riser board fixing member is inserted to the root between the rear surface of the upper end of the riser board and a rear groove side surface 33c of the riser board fitting groove. Further, a fixture 50 is made to pass through the fixture insertion hole to fix the riser board upper end portion to the front end portion of the tread board to obtain the fixing structure of Fig. 2.SELECTED DRAWING: Figure 2

Description

The present invention relates to a riser plate fixing structure, a riser plate construction method, a riser plate fixing member and a riser plate used therein.

Conventionally, when fixing the riser plate of the stairs to the tread plate of the upper stage, the method as shown in FIG. 9 has been adopted. That is, a concave groove 22 to which the adhesive 40 is applied and filled is formed on the upper end surface 21 of the riser plate 20, and a fixture 50 (hereinafter, “wood screw 50”) is formed on the rear surface 23 at a position close to the upper end surface 21. A recessed groove 24 is formed for positioning to drive the tread plate 30, and a riser plate fitting groove 33 is formed on the back surface 32 at a position close to the front end surface 31 (the tip surface of the nose) of the tread plate 30. With the concave groove 22 on the upper end surface 21 coated and filled with the adhesive 40, the upper end portion of the riser plate 20 is inserted into the riser plate fitting groove 33 of the tread plate 30 and pressed against the groove bottom surface 33a and the front groove side surface 33b. As a result, the upper end surface 21 of the riser plate 20 is closely joined to the groove bottom surface 33a (and the front groove side surface 33b) of the riser plate fitting groove 33. Further, by driving a wood screw 50 diagonally upward from the concave groove 24 of the rear surface 23 of the riser plate 20, a fixed structure in which the riser plate 20 is connected to the tread plate 30 in a predetermined positional relationship is to be obtained. there were.

However, in the case of the conventional technique as shown in FIG. 9, if the upper end portion of the riser plate 20 is not sufficiently pressed when being inserted into the riser plate fitting groove 30 of the tread plate 30, the upper end surface 21 of the riser plate 20 is not sufficiently pressed. A gap is formed between the surface and the bottom surface 33a of the tread plate fitting groove 33 and between the front surface 25 of the riser plate 20 and the side surface 33b of the front groove of the tread plate fitting groove 33, and the adhesive force due to the adhesive 40 is reduced. It causes a squeal when a person goes up and down the stairs.

Further, even when the wood screw 50 is not driven at a predetermined angle (for example, 45 degrees), the riser plate 20 is not sufficiently fixed to the tread plate 30. That is, if the wood screw 50 has a deep driving angle such that the wood screw 50 penetrates from the upper end surface 21 of the riser plate 20 to the groove bottom surface 33a of the riser plate fitting groove 33, the front surface 25 of the riser plate 20 and the front groove of the tread plate fitting groove 33 Fixing with the side surface 33b depends only on the adhesive strength of the adhesive 40, and the wood screw 50 is shallow so as to penetrate from the front surface 25 of the riser plate 20 to the front groove side surface 33b of the riser plate fitting groove 33. When the driving angle is set, the fixing between the upper end surface 21 of the riser plate 20 and the groove bottom surface 33a of the tread plate fitting groove 33 depends only on the adhesive force of the adhesive 40, and the fixing strength is insufficient in either case. Then, it causes a squeal.

Patent Document 1 proposes to use a riser plate fixing block 1 in order to solve the problem. The riser plate fixing block 1 is a block arranged in contact with the back surface of the tread plate 21 and the rear surface of the riser plate 23 when the upper end portion of the riser plate 30 is fitted into the riser plate fitting groove 30 of the tread plate 30. A wedge piece inserted into a gap 34 (FIG. 9 (b)) formed between the main body 2, the rear surface 23 of the upper end of the riser plate, and the rear groove side surface 33c (FIG. 9 (a)) of the riser plate fitting groove 30. It consists of 3.

By using the riser plate fixing block 1 described in Patent Document 1, "the upper edge of the riser plate is firmly fitted into the fitting groove formed on the back surface of the step plate (= tread plate) by the wedge action of the wedge piece. Therefore, the relative movement of the two is restricted and the squeak noise (= stepping noise) is reduced ”(paragraph 0017).

Further, since the nail insertion hole 10 is formed in the block body 2, "the driving angle and the driving position of the nail 26 serving as the fastening tool are predetermined, and thus the fastening position and the angle are appropriate. It is possible to avoid a situation in which the step plate 21 is deviated from the position or angle and the step plate 21 is cracked or cracked ”(paragraph 0046).

Japanese Unexamined Patent Publication No. 2010-7359

However, when the riser plate 23 is fixed to the step plate 21 by using the riser plate fixing block 1 described in Patent Document 1, the upper edge of the riser plate 23 is inserted into the fitting groove 25 and a predetermined positional relationship ( While holding the upper surface and the front surface of the riser plate 23 in close positional relationship with the bottom surface and the front surface of the fitting groove 25, the lower surface of the riser plate fixing block 1 (the striking surface for installation 8) is hit with a hammer or the like to make a wedge. It is necessary to drive the piece 3 into the gap. That is, the riser plate is temporarily fixed to the tread plate with nails or adhesive in a predetermined positional relationship, and the riser plate fixing block is further specified to the riser plate and tread plate using nails or adhesive. Since it is fixed in the positional relationship of, there is a problem that work time and effort is required.

Therefore, the problem to be solved by the present invention is to provide a new technique capable of more easily performing the work of fixing the riser plate of the stairs to the upper tread plate and preventing the treading. Is.

In order to solve this problem, the present invention according to claim 1 has a riser plate fixing structure in which the upper end portion of the riser plate is fixed in a state of being fitted into the riser plate fitting groove formed on the back surface of the tread plate. The main body, the front protruding portion protruding forward from the main body portion, the tapered upward protruding portion protruding upward from the main body portion, and the fixture insertion hole formed at a predetermined angle in the main body portion. Using a riser plate fixing member having at least The upper surface of the main body is in close contact with the back surface of the tread plate, and the upward protruding portion is inserted to the root between the rear surface of the upper end portion of the riser plate and the rear groove side surface of the riser plate fitting groove. In this state, the fixture is fixed by an adhesive in the riser plate fitting groove and the fixture that penetrates the upper end portion of the riser plate from the fixture insertion hole and is driven into the front end portion of the tread plate.

According to the second aspect of the present invention, in a state where the upper end portion of the riser plate is fitted into the riser plate fitting groove formed on the back surface of the tread plate, the tread plate is formed with a fixture and an adhesive inserted into the fixture insertion hole. It is a method of constructing a riser plate to be fixed. Using a riser plate fixing member having at least a fixture insertion hole to be formed, the front protruding portion of the riser plate fixing member is fitted into a concave groove formed on the rear surface of the riser plate, and the riser plate is formed. After applying the adhesive to the upper end surface, insert the upper end of the riser plate into the riser plate fitting groove of the tread plate and press the upper end surface of the riser plate against the groove bottom surface of the riser plate fitting groove to bond them. Insert the upward protrusion of the plate fixing member between the rear surface of the upper end of the riser plate and the rear groove side surface of the riser plate fitting groove to the root, and further insert the fixture through the fixture insertion hole of the riser plate fixing member. The riser plate is fixed to the tread plate.

The present invention according to claim 3 is a riser plate fixing member used in the riser plate fixing structure according to claim 1 or the riser plate construction method according to claim 2.

According to the fourth aspect of the present invention, in the riser plate fixing member according to claim 3, the riser plate fixing member further protrudes rearward from the main body portion and downwardly protrudes downward from the main body portion. It is characterized in that an inside corner is formed by the lower surface of the rear protruding portion and the rear surface of the downward protruding portion.

According to the fifth aspect of the present invention, in the riser plate fixing member according to the fourth aspect, the fixing tool insertion hole of the riser plate fixing member opens at the entrance corner between the lower surface of the rear protrusion and the rear surface of the lower protrusion. It is characterized by that.

The present invention according to claim 6 has the same outer shape as the state in which the front protruding portion of the riser plate fixing member according to any one of claims 3 to 5 is fitted into the concave groove on the rear surface of the riser plate. It is a riser plate characterized by having an integrally formed upper end portion.

According to the present invention, it is possible to easily fix or construct the riser plate by using a riser plate fixing member having a shape different from that of the prior art, and it is possible to prevent treading after the construction.

That is, the riser plate fixing member of the present invention is temporarily fixed (or fixed or integrated with the upper end portion of the riser plate) in a state where the front protrusion is fitted in the concave groove formed on the rear surface of the upper end portion of the riser plate. When the upper end of the riser plate to which the riser plate fixing member is attached is inserted into the riser plate fitting groove on the back surface of the tread plate, the upper protruding portion of the riser plate fixing member becomes the upper end of the riser plate and the riser plate. It enters the riser plate fitting groove along the side surface of the rear groove of the fitting groove, and at the same time, the surface of the main body of the riser plate fixing member comes into close contact with the back surface of the tread plate, and at the same time, the root of the upward protruding portion closes the gap tightly. When the upper end surface of the riser plate is pressed against the bottom surface of the riser plate fitting groove, the adhesive applied to the upper end surface of the riser plate spreads over the entire upper end surface, and the surplus portion is above the riser plate fixing member. It flows out into the gap between the protrusion and the side surface of the rear groove of the riser plate fitting groove, and these are firmly adhered and fixed to the bottom surface of the groove and the side surface of the rear groove of the riser plate fitting groove. As a result, the riser plate can be firmly fixed to the tread plate in combination with the fixing by a fixing tool such as a wood screw, and it is possible to prevent the treading noise when walking on the stairs.

Further, when the upper end of the riser plate is completely inserted into the riser plate fitting groove of the tread plate, the root of the upward protruding portion of the riser plate fixing member closes the gap tightly, so that the riser plate fitting groove is inserted into the riser plate fitting groove. Since the front surface of the upper end portion of the riser plate is in close contact with the side surface of the front groove, the adhesive does not flow out between them, and therefore the exposed portion on the front surface of the riser plate can be prevented from being contaminated with the adhesive. ..

It is sectional drawing which shows the riser plate fixing member by one Embodiment of this invention. It is sectional drawing which shows the fixing structure of the riser plate using this riser plate fixing member. It is sectional drawing which shows the fixed structure of the riser plate of FIG. 2 disassembled into each member. It is sectional drawing which shows the 1st process of the construction method of the riser plate using this riser plate fixing member. It is sectional drawing which shows the 2nd process performed following the 1st process of FIG. It is sectional drawing which shows the 3rd process performed following the 2nd process of FIG. A riser plate fixing member according to another embodiment of the present invention is shown. FIG. 7 (a) shows an embodiment in which a riser plate fixing member having the same shape as that of FIG. 1 is previously adhered and fixed to the rear surface of the riser plate and integrated, and FIG. 7 (b) shows the riser plate fixing. An embodiment is shown in which the riser plate is cut so that the upper end portion of the riser plate has the same outer shape as in FIG. 7A, instead of using the member as a separate member. A riser plate fixing member according to still another embodiment of the present invention is shown. FIG. 8A shows an embodiment in which a riser plate fixing member having a shape different from that of FIG. 1 is previously adhered and fixed to the rear surface of the riser plate and integrated, and FIG. 8B shows a riser plate. An embodiment is shown in which the riser plate is cut so that the upper end portion of the riser plate has the same outer shape as in FIG. 8A, instead of using the fixing member as a separate member. It is sectional drawing which shows the construction method which was conventionally performed when fixing the riser plate to the upper tread plate.

A riser plate fixing member according to an embodiment of the present invention is shown in cross section in FIG. The riser plate fixing member 10 is made of synthetic resin, metal, wood, or the like, and is a material (fixing) that can be fixed by a fixing tool 50 (hereinafter, referred to as “wood screw 50”) such as a wood screw, a tapping screw, and a nail. A material that does not break even when the tool is driven in or screwed in), and has a rectangular cross-section main body 11, a forward protruding portion 12 that protrudes forward from the main body 11, and an upward protrusion that protrudes upward from the main body 11. The portion 13 has a rear projecting portion 14 projecting rearward from the main body portion 11, and a downward projecting portion 15 projecting downward from the main body portion 11 and is integrally formed. Further, a fixture insertion hole 50 (hereinafter, "wood screw insertion hole 16") that penetrates the main body 11 diagonally (in this embodiment, an inclination angle of 45 degrees) from the entrance corner of the rear protrusion 14 and the downward protrusion 15 is referred to as "wood screw insertion hole 16". ) Is formed.

The upper surface 12a of the front protrusion 12, the upper surface 11a of the main body 11, and the upper surface 14a of the rear protrusion 14 provide the same horizontal plane, and the front surface 13a of the upward protrusion 13, the front surface 11b of the main body 11, and the front surface of the downward protrusion 15 are provided. 15a gives the same vertical plane. Further, a right-angled inside corner is formed by the lower surface 14b of the rear protruding portion 14 and the rear surface 15b of the downward protruding portion 15, and the wood screw insertion hole 16 is opened at this inside corner. Note that the dotted lines drawn between the main body portion 11 and the front protruding portion 12, the upward protruding portion 13, the rear protruding portion 14 and the downward protruding portion 15 in FIG. 1 conceptually represent the boundary line between these portions. Since these are integrally molded as described above, there is actually no boundary line.

The riser plate fixing member 10 has an arbitrary dimension in the length direction (vertical direction on the paper surface in FIG. 1), and has a cross-sectional shape shown in FIG. 1 over the entire length thereof. In the case of a relatively short (for example, 20 to 100 mm) riser plate fixing member 10, a plurality of riser plate fixing members 10 should be used at equal intervals or at appropriate intervals according to the width dimensions of the riser plate 20 and the tread plate 30. Or, at least two riser plate fixing members 10 are fixed near both ends of the riser plate 20 and the tread plate 30, and the conventional technique shown in FIG. 9 is used in other places without using the riser plate fixing member 10. Similarly, it may be fixed only with a predetermined number of wood screws 50. Further, in the case of the riser plate fixing member 10 having a relatively long length (for example, larger than 100 mm and substantially the same length as the riser plate 20) close to the width dimension of the riser plate 20 and the tread plate 30, a single riser plate fixing member 10 may be used.

In addition, one or more wood screw insertion holes 16 are formed according to the length of the riser plate fixing member 10. Since the nailing interval is generally 50 to 100 mm, an arbitrary number of wood screw insertion holes 16 are formed at the same interval.

The dimensions of each part of the riser plate fixing member 10 in the cross section shown in FIG. 1 are, for example, the height (vertical direction) dimension of the main body portion 11 and the rear protruding portion 14 being 5 mm, and the width of the main body portion 11 and the downward protruding portion 15 (the width of the main body portion 11 and the downward protruding portion 15). The dimensions (in the front-rear direction) are 5 mm, the protrusion length (front-back direction) and protrusion width (vertical direction) from the front surface of the main body 11 of the front protrusion 12 are 1 mm and 3 mm, respectively, and the protrusion length of the upward protrusion 13 from the upper surface of the main body 11. The (vertical direction) is 12 mm, and the widths (front-back direction) of the root portion and the tip portion thereof are tapered tapered shapes of 2 mm and 1 mm, respectively.

The riser plate fixing member 10 is similar to the riser plate fixing block 1 described in Patent Document 1 in its configuration and usage, but is significantly different in that it has a front protrusion 12, and therefore the riser plate fixing member 10 is used. The fixing structure of the riser plate 20 obtained by using the above and the method of constructing the riser plate 20 performed by using the riser plate fixing member 10 are also different, and the effects or advantages described later can be exhibited.

FIG. 2 is a cross-sectional view showing a fixing structure obtained by fixing the riser plate 20 to the upper tread plate 30 using the riser plate fixing member 10, and FIG. 3 is an exploded cross-sectional view of the fixed structure. In this riser plate fixing structure, a concave groove 22 for applying the adhesive 40 is formed on the upper end surface 21 of the riser plate 20, and a wood screw 50 is driven into the rear surface 23 at a position close to the upper end surface 21. A concave groove 24 is formed, and a riser plate fitting groove 33 is formed on the back surface 32 at a position close to the front end surface 31 (step nose tip surface) of the tread plate 30, and the upper end surface 21 of the riser plate 20 is kicked. The front surface 25 of the riser plate 20 is in close contact with the groove bottom surface 33a of the plate fitting groove 33 and is in close contact with the front groove side surface 33b of the riser plate fitting groove 33. The riser plate 20 is fixed to the tread plate 30 by a wood screw 50 driven into the wood screw insertion hole 16 of the riser plate fixing member 10 from the inner corner of the lower surface 14b and the rear surface 15b of the downward protrusion 15. It becomes a fixed structure connected by.

The fixed structure shown in FIG. 2 is basically the same as that of the prior art shown in FIG. 9, and the same members or elements are designated by the same reference numerals. In FIGS. 2 and 3, reference numeral 36 is a non-slip groove formed on the surface 35 at a position close to the front surface of the tread plate 30. Further, what is painted black in FIG. 2 is an adhesive when the upper end portion of the riser plate 20 is inserted into the riser plate fitting groove 33 of the tread plate 30 and pressed against the groove bottom surface 33a and the front groove side surface 33b. The 40 extends over the entire upper end surface 21 of the riser plate 20 and is joined to the groove bottom surface 33a of the riser plate fitting groove 33, and further, the rear surface 23 of the riser plate 20 and the rear groove side surface of the riser plate fitting groove 33. It shows a state in which the upper protrusion 13 of the riser plate fixing member 10 is joined by flowing into the gap 34 (FIG. 9B) between the 33c and the riser plate fixing member 10.

The riser board 20 has a decorative sheet, a veneer, or the like attached or painted on at least the exposed surfaces of the front surface 25 and the rear surface 23 of a base material made of wood materials such as MDF, plywood, particle board, and composite materials thereof. The one that has been applied can be used. The length of the riser plate 20 (left-right direction) is shorter than the length of the tread plate 30 (left-right direction) by the length of the left and right ends where the tread plate 30 is fitted to the left-right side plates (not shown), and the plate thickness thereof. Is smaller than the groove width of the riser plate fitting groove 33 of the tread plate 30 by substantially the same dimension as the root thickness (2 mm in the above dimensional example) of the upward protrusion 13 of the riser plate fixing member 10. For example, the riser plate 20 may have a height of 225 mm and a thickness of 5.5 to 12 mm.

Further, the concave groove 24 formed on the rear surface 23 of the riser plate 20 comes into contact with the back surface 32 of the tread plate 30 when the upward protrusion 13 of the riser plate fixing member 10 is pushed to the root (the upper surface of the rear protrusion 14 abuts on the back surface 32 of the tread plate 30). (When), the front protrusion 12 is formed at a position where it can be fitted and held (for example, a position where the upper end of the concave groove 24 is 10 to 20 mm from the upper end surface 21 of the riser plate 20), and the groove depth thereof. The width of the groove is formed within the range of 0.5 to 1.5 mm and 2.5 to 3.5 mm depending on the protrusion length (front-back direction) and the protrusion width (vertical direction) of the front protrusion 12, and the front protrusion When the portion 12 is the above-mentioned dimensional example, it can be a concave groove 24 having a groove depth of 1 mm and a groove width of 3 mm.

The groove 24 may be any as long as it can fit the front protrusion 12 of the riser plate fixing member 10, and in the case of the embodiment in which a single long riser plate fixing member 10 is used, the groove 24 may be formed. It is formed over substantially the entire length (left-right direction) of the riser plate 20, but in the case of an embodiment in which a plurality of riser plate fixing members 10 are used at equal intervals or at appropriate intervals, the position of the riser plate fixing members 10 And, a plurality of recessed grooves 24 may be formed intermittently depending on the number of the grooves 24.

The tread plate 30 has a decorative sheet, a veneer, or the like attached to at least the front end surface 31, the front surface 35, and the exposed surface of the back surface 32 of a base material formed of a wood material such as MDF, plywood, particle board, or a composite material thereof. Alternatively, a painted one can be used. In the illustrated embodiment, a composite material formed by sandwiching a plywood 38 between two MDFs 37 and 39 and laminating them is used as a base material of the tread plate 30. The length of the tread plate 30 (left-right direction) is larger than the length of the riser plate 20 (left-right direction) by the length of the left and right ends fitted to the left-right side plates (not shown), for example, 895 to 1180 mm. The length in the front-rear direction is, for example, 210 to 1180 mm depending on the front-rear length of the tread, and the plate thickness is, for example, 30 to 36 mm.

The riser plate fitting groove 33 formed on the back surface 32 of the tread plate 30 has a front groove side surface 33b formed at a position 20 to 40 mm from the front end surface 31 of the tread plate 30, and has a groove width (front groove side surface 33b and rear groove side surface). The distance from 33c) is substantially the same dimension (for example, 11 mm) as the total thickness obtained by adding the thickness of the riser plate 20 to the thickness of the base of the upward protrusion 13 of the riser plate fixing member 10, and the depth thereof is the riser. It is substantially the same as the length from the upper end surface 21 of the plate 20 to the upper edge of the concave groove 24. Further, the length (left-right direction) of the riser plate fitting groove 33 may be any size as long as the upper end portion of the riser plate 20 can be fitted over the entire length thereof, and is, for example, 210 to 1180 mm. As described above, the riser plate 30 is formed slightly shorter than the tread plate 30, but the riser plate fitting groove 33 may be formed over the entire length of the riser plate 30.

The riser plate fixing member 10 shown in FIG. 1 is used in the fixing structure shown in FIG. 2, which is significantly different from the conventional technique shown in FIG. In the riser plate fixing member 10, the front protrusion 12 is fitted into the concave groove 24 of the riser plate 20, and the upper protrusion 13 is fitted with the rear surface 23 of the riser plate 20 to the root in the riser plate fitting groove 33 of the tread plate 30. It has entered the gap 34 (FIG. 9 (b)) between the riser plate fitting groove 33 and the rear groove side surface 33c, and has the front surface 13a of the upward protruding portion 13, the front surface 11b of the main body portion 11, and the downward protruding portion 15. The front surface 15a of the above is in close contact with the rear surface 23 of the riser plate 20, and the upper surface 11a of the main body 11 and the upper surface 14a of the rear protrusion 14 are provided in close contact with the back surface 32 of the tread plate 30. The wood screw 50 is driven into the front end portion of the tread plate 30 from the upper end portion of the riser plate 20 through the wood screw insertion hole 16 from the entrance corner of the rear protrusion portion 14 and the lower protrusion portion 15 of the riser plate fixing member 10. ..

Next, a method of constructing the riser plate 20 using the riser plate fixing member 10 shown in FIG. 1 to obtain the fixing structure shown in FIG. 2 will be described with reference to FIGS. 4 to 6.

First, as shown in FIG. 4, the riser plate fixing member 10 is temporarily fixed to the riser plate 20 by fitting the front protrusion 12 of the riser plate fixing member 10 into the concave groove 24 of the riser plate 20. Since the front protruding portion 12 is formed to have substantially the same shape and substantially the same dimensions as the concave groove 24, the front surface 13a of the upward protruding portion 13 and the front surface 15a of the downward protruding portion 15 are in close contact with the rear surface 23 of the riser plate 20 above and below the concave groove 24. In combination with this, the mated state is maintained and temporarily fixed without being easily detached, but if necessary, it may be fixed with double-sided tape or an adhesive. Further, the riser plate fixing member 10 is formed from a material such as synthetic resin or metal that is slightly elastically deformable so as to have a dimension slightly larger than that of the concave groove 24, and is temporarily fixed by pushing it into the concave groove 24. You may.

The adhesive 40 is applied to the adhesive application groove 22 on the upper end surface 21 of the riser plate 20 to which the riser plate fixing member 10 is temporarily fixed in this way. The amount of the adhesive 40 applied is the adhesive when the upper end of the riser plate 20 is inserted into the riser plate fitting groove 33 of the tread plate 30 and the upper end surface 21 is pressed against the groove bottom surface 33a of the riser plate fitting groove 33. The amount of 40 spreads over the entire upper end surface 21, and a slight excess thereof flows out into the gap between the upward protruding portion 13 of the riser plate fixing member 10 and the rear groove side surface 33c of the riser plate fitting groove 33. do. Since the front surface 25 of the riser plate 20 inserted into the riser plate fitting groove 33 is in close contact with the front groove side surface 33b, the adhesive 40 does not flow out between them, and therefore the front surface 25 of the riser plate 20 is exposed. It is possible to prevent the portion from being soiled by the adhesive 40 that has flowed out.

In the above, the front protruding portion 12 of the riser plate fixing member 10 is fitted into the concave groove 24 of the rear surface 23 of the riser plate (the riser plate fixing member 10 is temporarily fixed to the riser plate 20), and then on the riser plate. Although it has been described that the adhesive 40 is applied to the adhesive application groove 22 of the end surface 21, conversely, after the adhesive 40 is applied to the adhesive application groove 22, the riser plate fixing member 10 is temporarily fixed to the riser plate 20. It may be performed in the order of the steps to be performed.

In this state, the upper end portion of the riser plate 20 is inserted into the riser plate fitting groove 33 of the tread plate 30. At this time, as shown in FIG. 5, the upper end surface 21 of the riser plate 20 is pressed against the groove bottom surface 33a of the riser plate fitting groove 33, and at the same time, the tapered surface 13b of the upward protruding portion 13 of the riser plate fixing member 10 is pressed. The riser plate 20 is pushed forward through the riser plate fixing member 10 along the corner between the rear groove side surface 33c of the riser plate fitting groove 33 and the tread plate back surface 32, and the riser plate 20 is pushed in the riser plate fitting groove 33. The front surface 25 of the above is pressed against the front groove side surface 33b so that no gap is formed between them.

It is not necessary to be so conscious of pushing the riser plate 20 forward. When the upper end portion of the riser plate 20 is inserted into the riser plate fitting groove 33, the tapered surface 13b of the upward protruding portion 13 of the temporarily fixed riser plate fixing member 10 becomes the riser plate fitting groove as the upper end portion is inserted into the riser plate fitting groove 33. It gradually moves forward along the angle between the rear groove side surface 33c of 33 and the tread plate back surface 32, and the upper end surface 21 of the riser plate 20 comes into close contact with the groove bottom surface 33a of the riser plate fitting groove 33, and at the same time, the upward protrusion 13 The root of the riser plate 20 is fitted into the riser plate fitting groove 33, and the front surface 25 of the riser plate 20 is in close contact with the front groove side surface 33b of the riser plate fitting groove 33.

Then, as described above and as shown in FIG. 6, the adhesive 40 spreads over the entire upper end surface 21, and a small excess thereof is fitted to the upward protrusion 13 of the riser plate fixing member 10 and the riser plate. Since it flows out into the gap between the groove 33 and the rear groove side surface 33c, the upper end surface 21 of the riser plate 20 inserted into the riser plate fitting groove 33 is closely adhered to the groove bottom surface 33a and temporarily fixed. These are adhered to each other so as to close the gap between the upward protruding portion 13 of the plate fixing member 10 and the rear groove side surface 33c.

In this state, the wood screw 50 is inserted from the inner corner of the rear protruding portion 14 and the downward protruding portion 15 of the riser plate fixing member 10 through the wood screw insertion hole 16 from the upper end portion of the riser plate 20 to the front end portion of the tread plate 30. By driving, the fixed structure shown in FIG. 2 can be obtained.

If the driving angle of the wood screw 50 is too steep, the riser plate 20 cannot be firmly fixed to the tread plate 30, and the upper end of the riser plate 20 is likely to crack. On the contrary, if the drive angle is too loose, Although the riser plate 20 can be sufficiently fixed to the tread plate 30, the back surface 32 of the tread plate 30 is likely to be bulged by the wood screws 50. As a result of the experiment by the present inventor, the driving angle of the wood screw 50 is preferably about 45 degrees, and the wood screw 50 is formed by forming the wood screw insertion hole 16 at an angle of about 45 degrees in the riser plate fixing member 10. Can always be driven at the optimum driving angle, and the riser plate 20 can be firmly fixed and the back surface 32 of the tread plate can be reliably prevented from being deformed.

The present invention is not limited to the above-described embodiment, and can be variously modified or modified within the scope of the invention defined by the description of the claims. For example, the dimensions of each part are exemplary and can be changed as long as the effects of the present invention are not impaired. Further, the shape of each part of the riser plate fixing member 10 can be changed as long as it can exert the above-mentioned action and effect. For example, the main body portion 11 is not limited to the cross-sectional shape but is in close contact with the back surface 32 of the tread plate. As long as it has a surface that is in close contact with the surface and the rear surface 23 of the riser plate, it may be formed in a triangular cross section or the like. Further, in the above embodiment, the fixture insertion hole (wood screw insertion hole) 50 is formed so as to penetrate the main body portion 11, but is fixed from the inside corner of the lower surface 14b of the rear protrusion and the rear surface 15b of the lower protrusion. As long as the insertion angle when driving the tool (wood screw) 50 can be determined, it may be formed as a non-penetrating insertion hole.

Further, in the above embodiment, the riser plate fixing member 10 is temporarily fixed to the riser plate 20 by fitting the front protrusion 12 of the riser plate fixing member 10 into the concave groove 24 of the riser plate rear surface 23. As described above, as shown in FIG. 7A, the riser plate fixing member 10 is fitted with an adhesive or the like in a state where the front protrusion 12 of the riser plate fixing member 10 is fitted into the concave groove 24 of the riser plate rear surface 23. It may be integrally fixed to the riser plate 20. Alternatively, as shown in FIG. 7B, instead of using the riser plate fixing member 10 as a separate member, the riser plate so that the upper end portion of the riser plate 20 has the same outer shape as in FIG. 7A. A riser plate 20 obtained by cutting 20 may be used.

Further, a riser plate fixing member 10 having a shape in which the rear protrusion 14 and the downward protrusion 15 are substantially omitted from the riser plate fixing member 10 shown in FIG. 1 is used, and the riser plate fixing member 10 is temporarily fixed or fixed and integrated with an adhesive or the like. Alternatively, the riser plate 20 may be formed by cutting the riser plate 20 so that the upper end portion of the riser plate 20 has the same outer shape as that of FIG. 8 (a) (FIG. 8). (B)).

10 Rise plate fixing member 11 Main body 12 Front protrusion 13 Upper protrusion 14 Rear protrusion 15 Lower protrusion 16 Wood screw insertion hole (fixing tool insertion hole)
20 riser plate 21 upper end surface 22 adhesive application groove 23 rear surface 24 concave groove 25 front surface 30 tread plate 31 front end surface (step nose tip surface)
32 Back side 33 Rise plate fitting groove 34 Gap 35 Front side 36 Non-slip concave groove 37 MDF
38 plywood 39 MDF
40 Adhesive 50 Wood screws (fixing tool)

Claims (6)

It is a fixing structure of the riser plate that is fixed in a state where the upper end of the riser plate is fitted in the riser plate fitting groove formed on the back surface of the tread plate.
At least a main body, a front protruding portion protruding forward from the main body portion, a tapered upward protruding portion protruding upward from the main body portion, and a fixture insertion hole formed in the main body portion at a predetermined angle. Using the riser plate fixing member that you have
The front protruding portion of the riser plate fixing member is fitted into the concave groove formed on the rear surface of the riser plate, the front surface of the upward protruding portion is in close contact with the rear surface of the riser plate above the concave groove, and the upper surface of the main body portion is the tread plate. It is in close contact with the back surface, and the upper protrusion penetrates from the fixture insertion hole to the upper end of the riser plate with the upper protrusion inserted to the root between the rear surface of the upper end of the riser plate and the side surface of the rear groove of the riser plate fitting groove. The riser plate fixing structure is characterized in that it is fixed by a fixture to be driven into the front end portion of the tread plate and an adhesive in the riser plate fitting groove. It is a construction method of a riser plate that is fixed to the tread plate with a fixture inserted in the fixture insertion hole and an adhesive with the upper end of the riser plate fitted in the riser plate fitting groove formed on the back surface of the tread plate. hand,
At least a main body, a front protruding portion protruding forward from the main body portion, a tapered upward protruding portion protruding upward from the main body portion, and a fixture insertion hole formed in the main body portion at a predetermined angle. Using the riser plate fixing member that you have
After fitting the front protrusion of the riser plate fixing member into the concave groove formed on the rear surface of the riser plate and applying an adhesive to the upper end surface of the riser plate,
The upper end of the riser plate is inserted into the riser plate fitting groove of the tread plate, and the upper end surface of the riser plate is pressed against the bottom surface of the groove of the riser plate fitting groove to bond them. Insert it to the root between the rear surface of the upper end of the riser and the rear groove side surface of the riser plate fitting groove.
Further, a method for constructing a riser plate, which comprises inserting a fixture through a fixture insertion hole of a riser plate fixing member to fix the riser plate to a tread plate. The riser plate fixing member used in the riser plate fixing structure according to claim 1 or the riser plate construction method according to claim 2. The riser plate fixing member further has a rear protruding portion projecting rearward from the main body portion and a downward projecting portion projecting downward from the main body portion, and is inserted by a lower surface of the rear protruding portion and a rear surface of the downward projecting portion. The riser plate fixing member according to claim 3, wherein a corner is formed. The riser plate fixing member according to claim 4, wherein the fixing tool insertion hole of the riser plate fixing member opens at the entrance corner between the lower surface of the rear protrusion and the rear surface of the lower protrusion. An upper end portion integrally formed so that the front protruding portion of the riser plate fixing member according to any one of claims 3 to 5 has the same outer shape as the state in which the front protrusion portion is fitted in the concave groove on the rear surface of the riser plate. A riser plate characterized by having.

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