JP6676103B2 - Nosing member, its construction method and stairs - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a stair nosing member, a method for constructing the nosing member, and a stair having a tread on which the nosing member is constructed.

  2. Description of the Related Art Conventionally, a stair nosing member, also called a non-slip material, is generally attached to a front end of an upper surface of a tread plate for the purpose of preventing slip on the tread plate when climbing up and down stairs.

  Patent Literature 1 discloses a base made of a hard resin fixed to a front end portion of an upper surface of a step board of a stair, and a cross-section substantially covering the upper surface of the base and the front end face of the step board in a detachable manner attached to the base. A nasal member having an L-shaped soft resin cover is shown.

JP 2017-101508 A

  The stair nosing member of Patent Literature 1 has an effect of facilitating an operation of attaching to a tread plate at the time of construction of a stair, and obtaining a beautiful construction appearance after construction.

  However, on the other hand, if the base of the nostril member is made of a hard resin and the cover to be assembled thereon is a soft resin, other problems arise and there is room for improvement.

  That is, when the nose member attached to the tread is stepped on the stairs, a hard base is felt on the soles of the feet due to the deformation of the soft resin cover. In particular, when a soft surface material having cushioning properties is provided on the upper surface of the tread plate on the rear side of the nose member for sound insulation and the like, the nose member has a hardness gap between the surface material and the base of the nose member. The base feels harder, and the sole of the foot may feel uncomfortable or, in extreme cases, pain.

  The present invention has been made in view of such a point, and an object of the present invention is to improve the structure of a nosing member combining a base and a cover, thereby facilitating an operation of attaching a nosing member to a tread during construction of a stair. Another object of the present invention is to enhance the comfort of stepping by making it difficult to feel the hardness of the base of the nostril member on the sole.

  In order to achieve the above object, in the present invention, a cushion portion is provided between the base and the cover.

Specifically, the first invention is directed to a stair nosing member attached to and fixed to a front end portion of a tread of a stair, and the stair nosing member includes a base fixed to a front end of an upper surface of the tread and having an engaging portion. A cover made of a soft resin having an engaged portion engageable with the engaging portion, and removably assembled to the upper surface of the base by engaging the engaged portion with the engaging portion. The base has a base body made of a hard resin including the engagement portion, and an upper cushion portion is provided between an upper surface of the base body excluding the engagement portion and the cover above the base body ; In the assembled state to the base, a gap is formed between the cover around the engaged portion and the base body, and the engaged portion of the cover is stepped on the engaging portion of the base, and the cover is stepped on. When it is deformed, the cover around the engaged part moves downward by the gap Characterized in that it engaged vertically movably engaged unnecessarily vertically. In the present invention, the near side is defined as “front” and the far side is defined as “rear” in the depth direction (upward direction) of the tread of the stairs.

  In the first aspect, the base of the stair nosing member is fixed to the front end of the upper surface of the step board of the stairs, and the cover is assembled to the base by engaging the engaged portion of the cover with the engaging portion of the base. Can be At that time, since the cover is soft and soft, the cover can be deformed and cut when the cover is cut according to the shape of the tread, and the cutting is easier than that of the hard resin. The workability of the stair nosing member and stairs can be improved.

  Further, since the cover can be easily cut in this manner, it is possible to cut the cover accurately to a desired size, and it is difficult for a gap to be formed between the stair nosing member and the side girders or walls due to a dimensional error of the cover. The appearance of the construction can be beautiful and its appearance can be improved.

  Furthermore, if the cover to be assembled to the base is made of a hard resin, the engaged portion of the cover may collide with another during transportation or the like or may be displaced from the engaging portion of the base during construction. If they are combined, they may be damaged. However, such a cover can be prevented by a soft resin cover as in the present invention.

  In addition, since the cover is made of a soft resin, the foot can be softly touched when going up and down the stairs. In addition, the base has a base body made of a hard resin provided with an engaging portion, and an upper cushion portion is provided between the upper surface of the base body excluding the engaging portion and the cover above the base body. The upper cushion portion has a function of reducing the impact force when the cover is deformed, for example, when an impact force directed downward is applied to the upper cover. Due to the interposition of such an upper cushion portion, the difference in hardness between the base and the cover is substantially reduced, and the nose member is softened as a whole, and when the nose member at the front end of the treadle is stepped on when going up and down the stairs. This makes it difficult for the user to feel the hard base on the sole of the foot, thereby preventing the foot sole from becoming uncomfortable or painful.

Further, a gap is formed between the cover around the engaged portion and the base body, and the engaged portion of the cover can move up and down in the vertical direction even when the engaged portion is engaged with the engaging portion of the base. Therefore, when stepping on the cover made of a soft resin, not only the cover is compressed and deformed, but also the cover around the engaged portion sinks downward by the amount of the gap, so that a cushion effect can be obtained. Although the engaging portion is made of a hard resin, the feeling of stepping on that portion can be softened.

According to a second aspect of the present invention, in the first aspect , the cover includes a mounting portion detachably mounted on an upper surface of the base, and a tread plate that is integrally connected to a front end of the mounting portion and that is attached to the base. And a front portion that covers the front end surface of the front end portion, and has a substantially L-shaped cross section, and a front cushion portion is provided on the front portion.

In the second aspect , the cover has the mounting portion to be mounted on the upper surface of the base and the front portion integrally continuous with the front end of the mounting portion. Thereby, the front end surface of the tread can be covered, and the appearance of the stairs can be improved.

  Further, a front cushion portion is provided on the front surface portion, and the front cushion portion has a function of reducing the impact force when the front portion is deformed due to, for example, a rearward impact force applied to the front portion. Therefore, even if the user hits the shin or the like against the nose member at the front end of the tread when climbing the stairs, the shin or the like hits the front cushion portion of the front portion of the cover, and the cushion effect of the front cushion portion causes the shin to fall. Pain can be prevented.

In a third aspect based on the first or second aspect, the upper cushion portion is made of a soft resin integrally fixed to an upper surface of the base body excluding the engaging portion, and the base is formed of a base body and the upper cushion portion. Characterized by comprising a complex of

In the third aspect of the invention, the base is a composite of a base body made of a hard resin and an upper cushion made of a soft resin, and the upper cushion is integrally fixed to an upper surface of the base body other than the engaging portion. Therefore, the upper cushion portion can be easily arranged between the upper surface of the base body and the cover on the upper side as compared with the case where the upper cushion portion is provided separately from the base. In addition, since the upper cushion portion is provided on the base by being integrated with the base body, its handling is facilitated and the number of parts can be reduced.

A fourth invention is Oite the third inventions, consist both extruded material with the base body and the upper cushion portion, characterized in that it is integrated by heat sealing to each other. In this way, while simultaneously extruding the hard resin base body and the soft resin upper cushion portion, the two can be heat-sealed and integrated immediately after the extrusion, and the base having the upper cushion portion can be formed. It can be easily manufactured.

  According to a fifth aspect, in any one of the first to fourth aspects, the upper cushion portion has at least one hollow portion between the inside of the upper cushion portion or the base body. . Thus, the upper cushion portion has a hollow structure having a hollow portion, and the performance of alleviating the impact force is increased, so that the upper cushion portion having a high cushioning effect can be easily obtained.

  In a sixth aspect based on any one of the first to fifth aspects, at least one recessed groove extending in the longitudinal direction of the base is formed as an engaging portion on the upper surface of the base, while the cover is formed. At least one ridge extending in the length direction of the cover is formed as an engaged portion on the surface facing the base, and the cover is attached to the base by fitting the ridge into the concave groove. The convex ridge portion is provided with a retaining portion for preventing the convex ridge portion from coming out of the concave groove portion when the convex ridge portion is fitted into the concave groove portion. I do.

  According to the sixth aspect, the cover is mounted on the base by fitting the ridges formed on the cover into the concave grooves formed on the upper surface of the base. At this time, since the ridge portion is provided with a retaining portion, the retaining portion prevents the ridge portion from coming out of the concave groove portion. Therefore, the cover made of the soft resin can be securely and smoothly assembled to the base.

According to a seventh aspect, in any one of the second to sixth aspects, the cover is an extruded material, and the front cushion portion has at least one hollow portion.

  In the seventh aspect, the front cushion portion has a hollow structure having a hollow portion, so that the performance of alleviating the impact force is increased, and the front cushion portion having a high cushioning effect can be easily obtained. Also, at the same time as the cover is extruded, a hollow portion can be formed in the front surface portion, and the front cushion portion can be easily formed.

  In an eighth aspect based on any one of the first to seventh aspects, the tread is a tread base material and a surface material provided on an upper surface of the tread base material and having a portion softer than the tread base material. Wherein the cover has a covering portion that covers the front part of the surface material when assembled to the base.

  In the eighth aspect, since the front portion of the surface material on the upper surface of the tread is covered with the covering portion when the cover is assembled to the base, the appearance of the stairs can be improved.

  Also, even if the surface material of the upper surface of the tread as described above has a portion of a material softer than the lower tread base material for sound insulation or the like, since the nasal member is softened as a whole by the upper cushion portion, A gap in hardness between the surface material and the base of the nostril member is less likely to occur, and it is possible to prevent an uncomfortable feeling of the sole upon raising and lowering.

  The ninth invention relates to a staircase, wherein the staircase is characterized in that any one of the nose members according to the first to eighth inventions is attached to the front end of the tread. According to this invention, the same operation and effect as those of the first invention can be obtained.

  A tenth invention is a method of constructing any one of the nosing members according to the first to eighth inventions, wherein the base is fixed to the upper surface of the tread by at least a double-sided tape, and then the cover is engaged. The cover is assembled to the base by engaging the portion with the engaging portion of the base.

  In the tenth aspect, the base of the nose member is fixed to the upper surface of the tread plate by sticking with double-sided tape, and then the cover is assembled to the base by engaging the engaged portion and the engaging portion. As described above, since the nosing member is constructed by using the engagement of the engaged portion and the engaging portion and the fixing with the double-sided tape in combination, the workability is excellent and the nostril member can be securely fixed to the tread. it can.

According to the present invention, in a nosing member including a base fixed to a front end portion of an upper surface of a tread plate and a soft resin cover detachably attached to an upper surface of the base by an engaging structure, the base has an engaging portion. It is assumed that it has a provided base body made of hard resin, and by providing a cushion portion between the upper surface of the base body excluding the engaging portion and the cover on the upper side, the workability of the stair nosing member and the stairs is improved, While improving the appearance of the stairs appearance, the cushion part can substantially reduce the difference in hardness between the base and the cover, making the stair nosing member as a whole softer. Pain can be prevented, and the comfort of stepping can be improved. Further, a gap is formed between the cover around the engaged portion and the base body, and the engaged portion of the cover is formed around the engaged portion when the cover is stepped on and deformed by the engaging portion of the base. The cover is engaged so as to be able to move up and down in the vertical direction so that the cover sinks down by the gap, so when stepping on the cover made of soft resin, the cover around the engaged part sinks down by the gap and cushions The effect can be obtained, and while the engaging portion of the base is made of hard resin, the feeling of stepping on that portion can be softened.

FIG. 1 is a side view of the nose member. FIG. 2 is a side view of the base. FIG. 3 is a perspective view when the base is viewed from obliquely above. FIG. 4 is a side view of the cover. FIG. 5 is a perspective view when the cover is viewed from obliquely below. FIG. 6 is an enlarged sectional view taken along line VI-VI of FIG. FIG. 7 is a perspective view of the stairs.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The description of the embodiments below is merely an example in nature, and is not intended to limit the present invention, its applications, and its uses.

  FIG. 7 shows a staircase S according to the embodiment of the present invention, and the staircase S constitutes a straight staircase. In the present embodiment, the front side is referred to as “front”, the back side as “rear”, the left side as “left”, and the right side as “right” in the depth direction (upward direction) of the stairs S.

  That is, for example, the stairs S are spanned between the left and right side girders 1, 1 (only the left side is shown), which are arranged and fixed to the base wall surface W to face left and right, for example. , A plurality of treads 5, 5, ..., and a plurality of riser plates 10, 10, ..., provided between the front end of the lower surface of the upper tread 5 and the rear side of the upper surface of the lower tread 5 It is.

  On the opposing surfaces of the left and right side girders 1, 1, there are tread plate fitting grooves 2, 2,... Extending in the horizontal front-rear direction for fitting the left and right ends (ends in the length direction) of each tread plate 5. The riser plate fitting grooves 3, 3,... Extending vertically to fit the left and right ends (ends in the length direction) of the respective riser plates 10 are formed so as to be alternately continuous.

  As shown in FIG. 6, each of the treads 5 has a tread base 6 having a predetermined strength and a surface member 7 integrally adhered to the upper surface of the tread base 6. The tread base member 6 is made of a plate material having a predetermined thickness (for example, 36 mm). The material is not particularly limited, and the same material as the treads used for general stairs is used, and examples thereof include plywood, particle board, composite plywood, laminated wood, and solid wood. At the front end of the lower surface of the tread base material 6, a fitting groove 6a for fitting the upper end of the riser plate 10 is formed.

  The surface material 7 is a thin plate having a predetermined thickness (for example, 7.5 mm) having a portion softer than the tread base material 6 below the tread 5 and is attached to, for example, a decorative material 7a and a back surface thereof. And a buffer layer 7b made of at least one of a vibration material and a cushion material. As the decorative material 7a, a wood base material such as MDF or hard board, or a material obtained by impregnating these with a resin is used. As the damping material, a PVC mat, a rubber mat, an asphalt mat, an insulation board, or the like is used. As the cushion material, a nonwoven fabric, a resin foam such as urethane, or the like is used. The surface material 7 is not limited to these, and may be a single material or a composite material, and a resin decorative sheet, a resin substrate, a wood substrate, or the like can be used. For the surface material 7, a material softer than the tread base material 6 for sound insulation or the like is used as the buffer layer 7b.

  The means for attaching the surface material 7 to the tread base material 6 is not limited, but in particular, when renewability of the tread 5 is required, the surface material 7 is cleanly peeled off from the tread substrate 6 when reforming. It is desirable to use a suitable adhesive or double-sided tape. As the adhesive, a low-tack adhesive or an elastic adhesive is preferable, for example, a silylated urethane adhesive, a special silicone resin adhesive, a modified silicone resin adhesive is used, and an adhesive whose peel strength is appropriately adjusted is used. Is also good. As the double-sided tape, a tape having low adhesiveness on one side is used.

  Also, the width of the tread base material 6 and the surface material 7 are different from each other in the front-rear direction (the depth direction of the stairs), and the width of the surface material 7 is larger than the width of the tread base material 6 before and after the base 13 in the nostril member 12 described later. It is shorter by the width dimension (for example, 26 mm).

  The riser 10 is made of the same material as the riser used for general stairs, and is, for example, plywood, particle board, MDF, composite plywood, laminated wood, or the like.

  The left and right ends of each tread 5 are fitted into the corresponding tread fitting grooves 2 and 2 of the left and right side girders 1 and 1, and the treads 5 are joined to the side girders 1 and 1 by wedges (not shown). Fixed. That is, in each of the tread fitting grooves 2, the lower groove side surface is inclined backward and downward, the groove width increases toward the rear side, and the tread 5 is fitted into the tread fitting groove 2. Sometimes, a gap is formed between the rear end of the lower surface of the tread plate 5 and the lower groove side surface of the tread fitting groove 2, and the tread plate 5 is fixed by driving a wedge into the gap.

  Also, the right and left ends of each riser plate 10 are fitted into the corresponding riser plate fitting grooves 3, 3 of the left and right side girders 1, 1, and the upper end of the riser plate 10 is located on the lower surface of the upper tread base material 6. The lower end portion is fixed to the rear end portion of the lower tread plate 5.

  As shown in FIG. 6, the front end (nose) of each of the treads 5 has a stair nosing member 12 (according to an embodiment of the present invention) for preventing a person climbing up and down the stairs S from slipping on the treads 5. A non-slip material is attached and fixed, and the surface material 7 is attached to the upper surface of the tread base material 6 in a range rearward (rearward) of the nosing member 12, that is, a region excluding the front end of the upper surface of the tread base material 6. Is being worn.

  As shown in FIG. 1, the nasal member 12 includes a base 13 fixed to a front end of the upper surface of the tread base member 6 of the tread 5, and a cover 25 detachably attached to the base 13.

  As shown in FIGS. 2 and 3, the base 13 includes a substantially flat base body 14 whose lower surface is fixed to the front end of the upper surface of the tread base material 6. The base body 14 is made of an extruded material of a hard resin such as hard PVC, ABS, PP, and PS, and a double-sided tape T is attached to a front and rear middle portion of a lower surface thereof. The base body 14 (base 13) is fixed to the front end of the upper surface of the tread plate 5 by the tape T.

  On the upper surface of the base body 14, an engagement recess groove 15 having a rectangular cross section as an engagement portion extending in the length direction of the base 13 is provided at a rear end (right end in FIG. 2) which is one end side in the width direction. The base 13 is formed integrally over the entire length of the base 13. A positioning groove 16 having a rectangular cross section extending in the length direction of the base 13 is provided at a position adjacent to the front side of the engagement groove 15 over the entire length of the base 13. 15 and the base portion 13 are formed in parallel so as to be arranged in front and rear in the width direction. The positioning groove 16 has a groove structure in which a front wall of the engagement groove 15 in the base body 14 and a rear end of the upper cushion 21 described later are formed as groove side walls. The positioning groove 16 does not constitute the engaging portion according to the present invention.

  On both front and rear sides of the opening of the engaging groove 15, plate-like protrusions 18, 18 projecting toward the center of the opening are formed integrally over the entire length of the engaging groove 15. Since the two projecting portions 18 project from the opening, the width of the engaging groove 15 is narrower than the width of the opening in the middle in the depth direction, and the width of the groove is increased. Is formed.

  Further, the positioning groove 16 is different from the engagement groove 15 in that the protrusions 18, 18 like the engagement groove 15 are not formed on both front and rear sides of the opening, and is a groove having a rectangular cross section. . The rear engaging groove 15 and the front positioning groove 16 differ in groove width including the opening, and the positioning groove 16 has a larger groove width than the engaging groove 15.

  At the front end of the lower surface of the base body 14, a positioning piece 19 having a small thickness and extending downward is integrally provided so as to protrude over the entire length of the base 13.

  On the other hand, the cover 25 is also made of an extruded resin material. The cover 25 is made of a soft resin such as a soft PVC resin. The cover 25 made of a soft resin is, for example, a PVC base material and has been subjected to an annealing treatment. In order to suppress expansion and contraction due to temperature, a heat treatment is applied after extrusion molding to forcibly shrink the cover. As the cover 25 made of a soft resin, a soft material having a hardness of less than 100 degrees is preferably used as a soft material as a raw material for extrusion molding, for example, a material having a hardness of 90 degrees is used. The cover 25 may be made of a soft resin such as TPE (for example, TPO or TPU), in addition to the soft PVC resin.

  As shown in FIGS. 4 and 5, the cover 25 includes a flat mounting portion 26 that is detachably attached to the upper surface of the base 13 on a lower surface (a surface facing the base 13), and a front end portion of the mounting portion 26. (One end in the width direction) and a flat front part 27 extending downward in a direction orthogonal to the mounting part 26 and integrally formed with the mounting part 26. The front part 27 and the mounting part 26 form a cover 25. The section is substantially L-shaped. A double-sided tape T is adhered to the upper and lower middle portions of the back surface of the front portion 27. As shown in FIG. In an assembled state in which the cover 25 is fixed to the front end of the upper surface of the tread plate 5 and the cover 25 is attached to the base 13 by fitting an engagement ridge 33 and an engagement groove 15, which will be described later, the front portion 27 of the cover 25 has the tread plate. In this state, the front portion 27 is fixed to the front end surface of the tread substrate 6 with a double-sided tape T.

  A locking portion 28 extending rearward is integrally formed at the lower end of the front portion 27. In the free state in which the nosing member 12 is not attached to the tread plate 5, the locking portion 28 is inclined upward and rearward so as to be directed upward and rearward. As shown in FIG. When the front portion 27 of the cover 25 covers the front end surface of the tread base member 6 of the tread plate 5, the engaging portion 28 at the lower end thereof is pressed against the lower surface of the tread base member 6 by elasticity and locked. It has become so.

  A concave portion 29 for accommodating the front end portion of the base 13 and the positioning piece 19 extending downward from the front end portion of the front portion 27 is formed in the upper portion of the rear surface (rear surface). Is set such that the rear surface of the positioning piece 19 is flush with the rear surface of the front portion 27 other than the concave portion 29 in a state where the front end portion of the base 13 and the positioning piece 19 are accommodated in the concave portion 29, When the cover 25 is assembled to the base 13 fixed to the tread base member 6, the adhesion of the double-sided tape T is hindered between the front surface 27 of the cover 25 and the front end surface of the tread base member 6. Large gaps are not created.

  Further, on the upper surface of the mounting portion 26, a plurality (three in the illustrated example) of nonslip grooves 30, 30,... I have. At the rear end (the right end in FIG. 4), which is the other end in the width direction of the mounting portion 26, a coating portion 31 whose thickness decreases toward the front end is integrally formed over the entire length of the mounting portion 26. Is formed. In the free state in which the nosing member 12 is not attached to the tread 5, the covering portion 31 has a distal end curved downward. When the nosing member 12 is attached to the tread 5, as shown in FIG. Due to elasticity, the front end portion comes into pressure contact with the upper surface of the surface material 7 of the tread plate 5 to cover the front portion.

  On the lower surface of the mounting portion 26, a plate-like engagement as an engaged portion extending over the entire length of the cover 25 (the mounting portion 26) is provided at a portion near the rear end opposite to the front portion 27. The ridge 33 is integrally formed so as to protrude downward. On the lower surface of the mounting portion 26 on the front side of the engaging ridge portion 33, a positioning ridge portion 35 extending over the entire length of the cover 25 (mounting portion 26) protrudes downward. These ridges 33 and 35 are provided so as to be arranged in front and rear in the width direction of the cover 25 over the entire length of the mounting portion 26 in the length direction. That is, the engaging ridges 33 are disposed behind the positioning ridges 35. The positioning ridge 35 does not constitute the engaged portion in the present invention.

  The engaging ridge portion 33 has a tapered tapered cross section at the tip side, and the thickness of the engaging ridge portion 33 in the front-rear direction (the left-right direction in FIGS. 1 and 4) is equal to the thickness of the engaging groove 15 of the base 13. Is smaller than the groove width of the opening, and the height of the downward projection is set smaller than the groove depth of the engaging groove 15. It is configured so that it can be fitted inside from its opening.

  In addition, retaining portions 34, 34 are integrally formed at the distal end of the engaging ridge 33 (engaged portion). The retaining portions 34, 34 have a triangular cross section integrally formed on both front and rear sides of the front end portion of the engaging ridge 33 so as to protrude by extending their tapered surfaces upward. , 34, the cross-sectional shape of the entire engagement ridge 33 is in the shape of an arrow. The thickness of the ridge 33 at the retaining portions 34, 34 is set to be larger than the groove width of the opening of the engagement groove 15, and the engagement ridge 33 is fitted into the engagement groove 15. When the retaining portions 34, 34 are deformed so as to reduce the thickness of the engaging projections 33 at the retaining portions 34, 34, The engagement protrusions 33 are engaged with the projections 18 on both sides of the opening of the engagement groove 15 so that the engagement protrusions 33 are engaged with the engagement groove 15. I try to prevent them from getting out.

  On the other hand, unlike the engaging ridges 33, the positioning ridges 35 are thicker than the thickness (dimensions in the front-rear direction) of the engaging ridges 33 and lower than the projecting height of the engaging ridges 33. It has a rectangular shape, and has a lower projecting height than the engaging ridge 33. The thickness of the positioning ridge 35 in the front-rear direction is set smaller than the groove width of the opening of the positioning groove 16 of the base portion 13, and the projection height is set smaller than the groove depth of the positioning groove 16. The positioning ridge 35 can be positioned by fitting into the positioning groove 16 of the base 13 from the opening thereof. When the positioning ridge 35 is fitted into the positioning groove 16, the front surface of the positioning ridge 35 in the thickness direction and the front edge of the opening of the positioning groove 16 are in contact with each other. A large gap is provided between the rear surface of the ridge 35 in the thickness direction and the rear edge of the opening of the positioning groove 16.

  1, 4 and 6, reference numeral 37 denotes a decorative covering layer integrally formed over the entire outer surfaces of the mounting portion 26, the front portion 27, the covering portion 31, and the locking portion 28 of the cover 25. The decorative covering layer 37 is formed by being extruded integrally with the cover 25 during extrusion molding, and a pattern such as a wood grain pattern is drawn on the surface thereof.

  With the above structure, as described above, the engagement recessed groove 15 on the upper surface of the base 13 engages with the engagement portion, and the engagement ridge 33 on the lower surface of the mounting portion 26 of the cover 25 engages with the engagement portion. An engaging portion is formed, and the engaging projection 33 of the cover 25 is fitted into the engaging groove 15 of the base 13 (engagement of the engaged portion with the engaging portion). Are removably assembled to the base 13.

  As a feature of the present invention, on the upper surface of the base body 14 of the base 13, an upper cushion portion 21 extending over the entire length of the base 13 between the position near the front end and a position closer to the rear side than the front-rear center. Are fixed integrally. The upper cushion portion 21 is for reducing the impact force when the cover 25 is deformed due to the downward impact force applied to the upper cover 25 (the mounting portion 26 thereof), and is the same as the cover 25. It is made of an extruded material of a soft resin such as soft PVC or TPE (for example, TPO or TPU). The upper cushion portion 21 has a rectangular cross section that is higher than the height position of the upper ends of both side walls of the engagement concave groove portion 15 (engagement portion). For example, two recessed grooves 22 having the same rectangular cross section are formed in front and rear, and the upper cushion portion 21 itself has a substantially E-shaped cross section. The lower surface of the upper cushion portion 21 is integrally adhered to the upper surface of the base main body 14 on both sides of the concave grooves 22, 22. The opening 22 has, for example, two hollow portions 23 closed by the base body 14. The number of the hollow portions 23 may be one, or three or more.

  In the assembled state where the cover 25 is assembled to the base 13, the rear end portion of the mounting portion 26 of the cover 25, that is, both front and rear sides of the engaging ridge 33 (portions around the engaged portion) are: The base body 14 is located at a position higher than the upper end surfaces of the front and rear sides of the opening of the engaging groove 15 by a certain height, and a gap G of, for example, about 1.7 mm is formed between the two.

  Further, in a state where the engaging ridge 33 of the cover 25 is engaged with the engaging groove 15 of the base body 14 by assembling the cover 25 to the base 13, the lower end of the engaging ridge 33 is The engagement groove 33 of the cover 25 is engaged with the engagement groove 15 of the base 13 in the vertical direction by the gap G in the state apart from the bottom of the engagement groove 15. Is engaged so as to be able to move up and down.

  On the other hand, the front portion 27 of the cover 25 has a front cushion portion 40 having a hollow structure. By the front cushion portion 40, when the front portion 27 is deformed due to an impact force applied to the front portion 27 from the front, for example, It is designed to ease power. More specifically, the entire thickness of the front portion 27 is thicker than the mounting portion 26, and a plurality of (three in the illustrated example) hollow portions 41, 41, which extend in the length direction of the cover 25 therein, have a rectangular cross section. Are formed side by side, and the front cushion portion 40 has these hollow portions 41, 41,. The hollow portions 41, 41,... Of the front cushion portion 40 are formed in the front portion 27 at the same time when the cover 25 made of the extruded material is extruded.

  With such a structure, the base 13 is fixed to the front end of the upper surface of the tread plate 5 and has a base body 14 made of hard resin having an engagement groove 15 (engagement portion) at the rear end. And is integrally fixed to the front portion of the upper surface of the base body 14 except for the upper cushion portion 21 made of soft resin. The base body 14 and the upper cushion portion 21 of the base 13 are hard and soft resins and have different hardnesses, but both are made of extruded materials, and are integrated with each other by heat fusion by melting and heating at the time of extrusion molding. ing.

  Next, a method of fixing the stair nosing member 12 to the tread 5 of the stairs S and performing the construction will be described. When the stairs S are constructed, each tread 5 and each riser 10 are constructed on the side girders 1 and 1. First, a plurality of tread plate fitting grooves 2, 2,... In which the tread plate 5 is fitted and a plurality of riser plate fitting grooves 3, 3,. The side girders 1 and 1 are fixed to the base wall surface W at the same height. Next, the left and right ends of the tread base material 6 of each tread 5 are fitted into the tread fitting grooves 2 and 2 of the left and right side girders 1 and 1, and the tread base 6 and the lower groove of the tread fitting groove 2 are fitted. A wedge is driven into the gap between the side surface and the tread base material 6 is fixed. In parallel with the fixing of the tread base material 6 to the side girders 1, a riser plate 10 is fixed between the upper and lower tread base materials 6, 6, and the left and right ends of the riser plate 10 are connected to the side girders 1, 1. And the upper end thereof is fitted into the fitting groove 6a of the upper tread base material 6, and the lower end of the riser plate 10 is fitted to the rear end of the lower tread base material 6. Fix it. After the plurality of tread base members 6, 6, ... and the riser plates 10, 10, ... are fixed to the side beams 1, 1, an adhesive is applied to the upper surface of each tread base member 6, A surface material 7 is adhered to the upper surface of the tread base material 6 with a front end portion left.

  After that, the nose member 12 is applied to each tread 5. Specifically, first, the base 13 of the stairs member 12 is placed on the front end of the upper surface of the tread substrate 6 of the tread plate 5, and the base 13 is fixed to the upper surface of the tread substrate 6 with a double-sided tape T. At this time, the positioning piece 19 at the front end of the lower surface of the base 13 is brought into contact with the front end surface of the tread base member 6 so as to be hooked, and the base 13 is positioned to the tread base member 6. By doing so, the positioning can be easily performed. Further, the base 13 may be fixed to the upper surface of the tread base material 6 at the bottom of the positioning groove 16 of the base body 14 by using a fixing tool (not shown) such as a staple or a screw. Since the groove width of the positioning groove 16 of the base 13 is wider than the engagement groove 15, the fixing tool may be fixed by penetrating the bottom of the positioning groove 16 and the work is facilitated.

  When the base 13 is fixed to the tread 5 in this way, the cover 25 is attached to the base 13 by the mounting portion 26. Specifically, the engaging ridge 33 on the lower surface of the mounting portion 26 is fitted into the engaging groove 15 on the upper surface of the base 13 (the engaged portion of the cover is engaged with the engaging portion of the base), The positioning ridge 35 on the lower surface of the mounting portion 26 is fitted into the positioning groove 16 on the upper surface of the base 13. Further, while the front end of the base 13 and the positioning piece 19 are accommodated in the recess 29 of the front part 27 of the cover 25, the front part 27 is fixed to the front end face of the tread base material 6 of the tread 5 with a double-sided tape T. . As a result, the cover 25 is assembled to the base 13.

  In this assembled state, the front portion 27 of the cover 25 covers the front end surface of the tread base member 6 of the tread plate 5, and the locking portion 28 at the lower end portion thereof is pressed and locked to the lower surface of the tread base member 6 by elasticity. Therefore, the front portion 27 is locked and held by the tread base material 6 by the locking portion 28 at the lower end, and in combination with the fixing structure using the double-sided tape T, the front portion 27 is positioned at the front end surface of the tread base material 6. The covered state can be kept stable.

  In addition, since the covering portion 31 is provided at the rear end of the mounting portion 26 of the cover 25, the covering portion 31 is elastically pressed against the front portion of the surface material 7 on the upper surface of the tread plate 5 when the cover 25 is attached to the base 13. Then, the front part of the surface material 7 is covered.

  When the stair nosing member 12 is constructed in this manner, the base 13 is attached to the upper surface of the tread base material 6 of the tread 5 with the double-sided tape T, and then the engaging ridge 33 and the positioning ridge 35 of the cover 25 are respectively attached to the base. 13, the cover 25 is assembled to the base 13 by fitting into the engagement groove 15 and the positioning groove 16, and the front surface 27 of the cover 25 is adhered to the front end surface of the tread base material 6 with the double-sided tape T. The fitting of the ridges 33, 35 and the two concave grooves 15, 16 and the attachment with the double-sided tape T, T are used in combination, so that the nostril member 12 is constructed, the workability is improved, and the nostril member is improved. 12 can be securely fixed to the tread plate 5.

  When it is necessary to replace the surface material 7 of the tread 5 for the reformed stairs S for the constructed stairs S, the tread base 6 is kept fitted in the tread fitting groove 2 of the side beam 1. Then, the old surface material 7 may be peeled off from the tread substrate 6, and then the new surface material 7 may be attached to the upper surface of the original tread substrate 6.

  Similarly, when the nose member 12 needs to be replaced, the base 13 is fixed to the tread base member 6 of the tread plate 5 and the engagement ridge 33 on the lower surface of the mounting portion 26 of the cover 25 and The cover 25 is removed by removing the positioning ridge 35 from the engagement groove 15 and the positioning groove 16 of the base 13 and peeling off the double-sided tape T between the rear surface of the front surface 27 and the front end surface of the tread base material 6. Then, the new cover 25 may be attached to the original base 13 after removing it from the base 13. At this time, since the cover 25 is made of a soft resin, the cover 25 can be easily removed from the base 13.

  In this embodiment, retaining projections 34, 34 are provided on the engaging ridges 33 on the lower surface of the mounting portion 26 of the cover 25 of the nostril member 12, and the positioning ridges 35 are compared with the engaging ridges 33. Due to the low protrusion height, the following operation and effect can be obtained.

  That is, if the engaging ridges 33 and the positioning ridges 35 have the same shape, and the cover 25 is slightly twisted due to the characteristics of the soft resin, the mounting portion 26 of the cover 25 is assembled to the base 13. In this case, there is a possibility that the engaging ridge 33 and the positioning ridge 35 are displaced with respect to the engaging concave groove 15 and the positioning concave groove 16 of the base 13, respectively, and it is difficult to smoothly fit them at the same time. On the other hand, since the height of the positioning ridge 35 is lower than that of the engagement ridge 33 as in the present embodiment, even if the two ridges 33 and 35 are slightly displaced, the positioning ridges 35 and 35 are positioned. The ridge 35 is preferentially fitted into the positioning groove 16 preferentially. The positioning protrusion 35 is fitted into the positioning groove 16 to position the cover 25 with respect to the base 13 (specifically, the front end face of the positioning protrusion 35 is positioned in front of the positioning groove 16. The positioning is performed by abutting against the rear surface of the upper cushion portion 21 which is the side surface.) With this positioning, the high engaging ridge 33 is also easily fitted into the engaging groove 15. . The engaging ridges 33 project thinner and larger than the positioning ridges 35, so that the engagement ridges 33 are less likely to come off than the positioning ridges 35 as long as they are fitted into the engaging concave grooves 15. In addition, since the stoppers 34 are provided at the distal end of the engaging ridge 33, the engaging ridge 33 comes out of the engaging groove 15 by the stoppers 34, 34. Is blocked. Thus, the mounting portion 26 of the soft resin cover 25 can be securely and smoothly assembled to the base 13.

  Further, since the engaging projections 33 on the lower surface of the mounting portion 26 of the cover 25 are disposed behind the positioning projections 35, the cover 25 can be more securely and smoothly assembled to the base 13. .

  Since the thickness of the positioning ridge 35 in the front-rear direction is greater than the thickness of the engagement ridge 33, the retaining portions 34, 34 at the tip of the engagement ridge 33 may be affected by a strong impact. Even if the engaging protrusions 33 are broken due to aging or the like, and the locking effect of the engaging protrusions 33 on the engagement recesses 15 is reduced, the thick positioning protrusions 35 are moved to the positioning recesses 16. The locking effect can be maintained by fitting and holding the inside, and the cover 25 does not easily fall off the base 13.

  Further, when it is necessary to cut the cover 25 according to the length (the width of the stairs S), the shape, and the like of the tread plate 5 during the construction of the nosing member 12, the soft resin cover 25 may be cut. Since the cover 25 can be deformed and cut, the cut is easier than cutting hard resin, and as a result, the workability of the stair nosing member 12 and the stairs S can be improved. .

  In addition, since the cover 25 is easily cut in this manner, the cover 25 can be cut accurately to a desired size, and a gap is formed between the stair nosing member 12 and the side girders 1, 1 and walls due to a dimensional error of the cover 25. The stairs S are less likely to be generated, and the appearance of the stairs S can be improved and its appearance can be improved.

  If the cover 25 to be assembled to the base 13 is made of a hard resin, the engaging ridges 33 and the positioning ridges 35 of the cover 25 are also made of a hard resin. , 35 may be damaged if they collide with other objects during transportation or the like, or if they are engaged with the hard resin grooves 15, 16 of the base 13 while being shifted during construction. However, with the cover 25 made of a soft resin as in the present embodiment, such breakage can be effectively prevented.

  The cover 25 of the nostril member 12 has a substantially L-shaped cross section having a mounting portion 26 detachably attached to the upper surface of the base 13 and a front portion 27 that is integrally connected to the front end of the mounting portion 26. Therefore, when the cover 25 is attached to the base 13, the front end portion 27 can cover the front end face of the tread base member 6 of the tread 5, and the stairs S can have an excellent appearance.

  Further, since the cover 25 has the covering portion 31 which is continuous with the rear end of the mounting portion 26, the front portion of the surface material 7 on the upper surface of the tread plate 5 is covered by the covering portion 31 in a state where the cover 25 is assembled to the base 13. Thus, the appearance of the stairs S can be made excellent.

  Further, in this embodiment, since the cover 25 of the nosing member 12 is made of a soft resin, the foot of the nosing member 12 when the stairs S are moved up and down is softer than that made of a hard resin.

  The base 13 is composed of a composite of a base body 14 made of a hard resin and an upper cushion 21 made of a soft resin, and the upper cushion 21 is a base excluding an engagement groove 15 (an engagement part). Since the upper cushion portion 21 which is a part of the base 13 is made of a soft resin, the upper cushion portion 21 is provided on the upper surface of the front side portion of the main body 14 so as to be interposed between the mounting portion 26 of the upper cover 25. Becomes The upper cushion portion 21 has a function of reducing the impact force when the cover 25 is deformed due to the downward impact force applied to the mounting portion 26 of the upper cover 25, for example. Since the upper cushion portion 21 is interposed between the front side portion of the base body 14 and the cover 25 in this manner, the difference in hardness between the base 13 and the cover 25 is substantially reduced.

  When the cover 25 is attached to the base 13, the front and rear sides of the engaging ridge 33 on the rear side of the mounting portion 26 of the cover 25 and the engaging recess near the rear end of the base body 14. A gap G is formed between the groove 15 and the upper end surfaces on both front and rear sides of the opening, and the engaging ridge 33 of the cover 25 is engaged with the engaging groove 15 of the base 13 by the amount of the gap G. It can only be moved up and down. Therefore, when the rear part of the mounting part 26 of the cover 25 made of a soft resin is stepped on, the mounting part 26 is not only compressed and deformed, but also the front and rear both sides of the engaging ridge 33 of the mounting part 26 are deformed. The cushion effect is obtained by sinking downward by the gap G, and the front and rear both sides of the engagement concave groove 15 near the rear end of the base 13 are made of hard resin, while softening the stepping feeling at that part. be able to.

  As a result, the nose member 12 has a cushioning effect of the upper cushion portion 21 on the front side portion, and has an engagement recess between the mounting portion 26 of the cover 25 and the rear side portion of the base body 14 on the rear side portion. A cushion effect is obtained by the gap G between the front and rear upper end surfaces of the groove 15 and the front and rear sides, and the cushion becomes soft as a whole. The base 13 is less likely to be felt, especially when going up the stairs S, so that it feels soft even when the nose member 12 is located on the arch of the foot, which can prevent discomfort and pain in the soles.

  In addition, since the nose member 12 is softened as a whole by the upper cushion portion 21 as described above, the surface material 7 of the tread plate 5 on the rear side of the nose member 12 is used as the lower tread base material 6 for sound insulation and the like. Even if the buffer layer 7b is made of a softer material, a gap in hardness between the surface material 7 and the base 13 of the nostril member 12 hardly occurs. In particular, when the cushioning layer 7b sinks by stepping on the surface material 7 of the tread plate 5, the rear part of the mounting portion 26 of the cover 25 of the nosing member 12 on the front side also sinks by the gap G in conjunction with the sinking. The hardness of the base 13 is less likely to be felt on the sole of the foot, and it is possible to prevent the foot sole from feeling uncomfortable when ascending and descending.

  In addition, since the upper cushion portion 21 has the hollow portions 23 between the base body 14 and the hollow portions 23, the upper cushion portion 21 has a hollow structure, and the performance of reducing the impact force is increased. Thus, the upper cushion portion 21 having a high cushioning effect can be easily obtained.

  Further, the base 13 is formed of a composite body of the base body 14 and the upper cushion portion 21, and the upper cushion portion 21 is integrally fixed to the upper surface of the base body 14 other than the engagement groove 15 (the engagement portion). Therefore, compared to the case where the upper cushion portion 21 is provided separately from the base 13, the upper cushion portion 21 can be easily arranged between the upper surface of the base body 14 and the mounting portion 26 of the cover 25 above the base body 14. . Further, since the upper cushion portion 21 is provided on the base 13 by being integrated with the base body 14, the handling thereof becomes easy and the number of parts can be reduced.

  Further, since the base body 14 and the upper cushion portion 21 are both extruded materials and are integrated by heat fusion with each other, the base body 14 made of hard resin and the upper cushion portion 21 made of soft resin are simultaneously extruded. While being molded, the two can be heat-sealed and integrated immediately after the extrusion, so that the base 13 provided with the upper cushion portion 21 can be easily manufactured.

  On the other hand, since the front cushion portion 40 is provided on the front portion 27 of the cover 25, even if the user hits the shin or the like against the nose member 12 at the front end of the tread plate 5 when going up and down the stairs, the shin or the like is not It hits the front cushion part 40 of the front part 27, and the pain of the shin etc. hardly occurs due to the cushion effect of the front cushion part 40.

  Further, the front cushion portion 40 has a hollow structure formed by hollow portions 41, 41,... Formed in the front surface portion 27, so that the performance of reducing the impact force is increased, and the front cushion portion 40 having a high cushioning effect is easily formed. Is obtained. Further, at the same time when the cover 25 is extruded, the hollow portions 41, 41,... Can be formed in the front surface portion 27, and the front cushion portion 40 can be easily formed.

(Other embodiments)
In the above embodiment, the upper cushion portion 21 of the base 13 is heat-welded to the base body 14, but the upper cushion portion 21 is integrated with the base body 14 by an adhesive other than the heat welding, for example, by an adhesive. You can also.

Further, in the above embodiment, the base 13 is a composite body of the base body 14 and the upper cushion part 21, but the upper cushion part 21 is a separate member from the base 13, and the upper surface of the base body 14 excluding the engagement groove 15. And the cover 25 above it. In that case, it is preferable that the upper cushion portion 21 is movable and locked to one of the base 13 and the cover 25.

  The upper cushion portion 21 is adhered to the base body 14 so as to form the hollow portions 23 between the base body 14 and the hollow portion 23 is formed inside the upper cushion portion 21. Can also.

  Furthermore, although both the upper cushion portion 21 and the front cushion portion 40 have a hollow structure having hollow portions 23 and 41, the provision of the hollow portions 23 and 41 is not essential. What is necessary is just a structure which can obtain.

  In the above-described embodiment, the two concave grooves 15 and 16 are fitted on the upper surface of the base 13 of the nosing member 12, and the two convex ridges 33 fitted on the two concave grooves 15 and 16 on the lower surface of the mounting portion 26 of the cover 25. 35 are provided, but one engagement concave groove 15 is provided on the upper surface of the base 13, and one engagement convex ridge 33 that fits into the engagement concave groove 15 is provided on the lower surface of the mounting portion 26 of the cover 25. Or the number of ridges and grooves excluding the engagement groove 15 and the engagement ridge 33 may be increased to two or more.

  In the above embodiment, the engaging ridges 33 are provided on the lower surface of the mounting portion 26 of the cover 25, and the engaging grooves 15 are provided on the upper surface of the base 13, respectively. The members to be provided may be reversed, and the engaging projections 33 may be provided on the upper surface of the base 13 and the engaging grooves 15 may be provided on the lower surface of the mounting portion 26 of the cover 25. However, in this case, during the construction of the nostril member 12, when the base 13 of the hard member before the cover 25 is attached is left in a state of being fixed to the tread base member 6 of the tread 5, the base is There is a risk that the engaging projections 33 on the upper surface 13 may be damaged by hitting other things, and fitting the engaging projections 33 made of a soft resin into the engaging grooves 15 made of a hard resin is opposite. For the reason that the construction is easier than in the case, it is preferable to configure as in the above embodiment.

  Further, in the above-described embodiment, the cover 25 includes the mounting portion 26 and the front portion 27, but may include only the mounting portion 26.

  Further, in the above embodiment, the nose member 12 is attached to the tread 5 of the stairs S forming the straight stairs, but the nose member 12 according to the present invention can of course be attached to the treads of the surrounding stairs. .

  The present invention is characterized in that the cushion portion can substantially reduce the difference in hardness between the base and the cover, thereby softening the nasal member as a whole, and preventing the foot sole from feeling uncomfortable when climbing up and down stairs. , Extremely useful and highly industrially applicable.

S Stairs T Double-sided tape 1 Side spar 5 Tread plate 6 Tread base material 7 Surface material 12 Step nose member 13 Base 14 Base body 15 Engagement groove (engagement part)
16 positioning concave groove part 21 upper cushion part 23 hollow part 25 cover 26 mounting part 27 front part 31 covering part 33 engaging convex part (engaged part)
34 retaining part 35 positioning convex part 40 front cushion part 41 hollow part G gap

Claims (10)

A stair nosing member attached and fixed to the tread front end of the stairs,
A base fixed to the front end of the upper surface of the tread plate and having an engaging portion;
A cover made of a soft resin that has an engaged portion engageable with the engaging portion, and is detachably attached to the upper surface of the base by engagement of the engaged portion with the engaging portion;
The base has a base body made of a hard resin including the engagement portion,
An upper cushion portion is provided between the upper surface of the base body excluding the engagement portion and the cover above the base body,
In the assembled state of the cover to the base, a gap is formed between the cover around the engaged portion and the base body,
The engaged portion of the cover is vertically engaged with the engaging portion of the base such that when the cover is stepped on and deformed, the cover around the engaged portion sinks downward by the gap. nosing member characterized by that. In claim 1 ,
The cover has a mounting section detachably mounted on the upper surface of the base, and a front surface section integrally including a front end portion of the mounting section, the front surface section covering the front end face of the tread plate when the cover is mounted on the base. It is shaped like
A nasal member, wherein a front cushion portion is provided on the front portion. In claim 1 or 2,
The upper cushion portion is made of a soft resin integrally fixed to the upper surface of the base body excluding the engagement portion,
A nose member comprising a composite of a base body and an upper cushion portion. In claim 3 ,
A nasal member wherein both the base body and the upper cushion portion are made of extruded material, and are integrated with each other by heat fusion. In any one of claims 1 to 4,
The stair nosing member, wherein the upper cushion portion has at least one hollow portion between the inside of the upper cushion portion and the base body. In any one of claims 1 to 5,
On the upper surface of the base, at least one groove portion extending in the length direction of the base is formed as an engagement portion,
At least one ridge extending in the length direction of the cover is formed as an engaged portion on a surface of the cover facing the base,
The cover is assembled to the base by fitting the ridge portion into the concave groove portion,
A nose member, wherein the ridge portion is provided with a retaining portion for preventing the ridge portion from coming out of the concave groove portion when the ridge portion is fitted into the concave groove portion. In any one of claims 2 to 6,
The cover is extruded,
The nasal member, wherein the front cushion portion has at least one hollow portion. In any one of claims 1 to 7,
The tread, the tread base material, provided on the upper surface of the tread base material, including a surface material having a portion softer than the tread base material,
A stair nosing member, wherein the cover has a covering portion that covers the front part of the surface material when assembled to the base.   A staircase wherein the nosing member according to any one of claims 1 to 8 is attached to a front end of the tread. It is a method of constructing the nostril member according to any one of claims 1 to 8,
A method for constructing a stair nosing member, comprising: fixing a base to an upper surface of a tread plate at least by sticking with a double-sided tape; and engaging the engaged portion of the cover with an engaging portion of the base to attach the cover to the base.

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