JP5557371B2 - Step part covering material and flooring laying structure using the same - Google Patents

Description

  The present invention relates to a stepped portion covering material and a flooring laying structure using the stepped portion covering material, and more specifically, before the flooring is laid, in order to eliminate a problem when the flooring is laid on a floor basement having a stepped portion. The present invention relates to a stepped portion covering material that covers a stepped portion of a floor base to form a gently inclined portion, and a flooring laying structure that eliminates problems using the covering material.

  Many of the floor foundations of open corridors in low-rise apartments are formed by placing the base materials such as precast concrete boards side by side between the joists in the open corridor. However, in such a floor base, a stepped portion is likely to occur at the joint between the base materials. Therefore, when a long and flexible flooring is laid, the shape of the joint stepped portion is formed on the surface of the flooring. As a result, not only does it look bad, but it also causes pedestrians to fall over, and if a gap is formed between the flooring and the joint step on the floor base, and it strikes with the tip of a heel or umbrella from above Problems such as perforations in the flooring occur.

  Further, even in a normal floor foundation in which concrete is cast, a stepped portion may be formed at a casting boundary portion or the like, and if a floor material is laid on the floor foundation in which such a stepped portion exists, the same problem occurs.

  Therefore, conventionally, in order to eliminate the above-described problems, a filling material such as a sealing material is filled into a joint step portion or a step portion (hereinafter collectively referred to as a step portion) of the floor base so that the cross section becomes a triangle. After repairing the part to a gently sloping part, a construction method was adopted in which the flooring was bonded to the floor base and laid.

  On the other hand, using the floor renovation repairing member in which the fitting portion is vertically set downward and tongue pieces are formed on both upper sides of the fitting portion, the end of the new flooring material to be pasted on the upper surface of the existing flooring of the building and A gap is provided between the sill (adjacent member) and the fitting part of the floor remodeling member is inserted into the gap, and the tongue piece is brought into contact with the end of the new flooring and the sill. A floor remodeling method is disclosed in which the end of the material and the sill are joined smoothly without any step (Patent Document 1).

Utility Model Registration No. 3064923

However, the conventional method of filling the floor with the filling material before laying the flooring is to clean the leveling material and repair the step to a gentle slope. In addition to being troublesome and time-consuming, there are problems that the construction time becomes long and the construction efficiency deteriorates for the following reasons.
That is, reactive fillers such as sealing materials and caulking agents are plastically deformed in a state before the reaction is completed (uncured state), so that the reaction of the filler filled in the stepped portion of the floor base is completed. When the flooring is bonded to the floor base, the filler is plastically deformed when the flooring adhesive is applied or when the flooring is pressed against the floor base, or the floor is covered by the operator during the flooring work. By stepping on the material, the filler is plastically deformed, and the shape of the gently inclined portion is impaired.
In order to prevent this, it is necessary to complete the reaction of the filler after a sufficient amount of time, and after the filler is in a state that does not undergo plastic deformation, it is necessary to bond and lay the flooring. The time becomes longer and the construction efficiency becomes worse.

  Further, the floor remodeling member described in Patent Document 1 does not repair a stepped portion existing on a floor base to a gently inclined portion and lay a flooring thereon, but an upper surface of an existing flooring. It is a member for joining the edge part and the sill (adjacent member) of the new flooring material affixed to no step. And since the repair member of patent document 1 forms a tongue piece in a horizontal direction according to the edge part of a new flooring, and the height of a sill, only the part for the kind of difference in both height has many. There was a need to prepare different types of retrofit members.

  The present invention has been made under the above circumstances, and the problem to be solved is that the floor material is laid on the floor substrate with a stepped portion by covering the stepped portion of the floor substrate before laying the floor material. To provide a step covering material that can eliminate the above-mentioned problems and reduce the construction time, and laying a flooring that uses the step part covering material to solve the above problems and shorten the construction time. To provide a structure.

In order to solve the above-mentioned problems, the step covering material and the floor covering laying structure according to the present invention are a floor covering laying structure comprising a floor base with a stepped portion and a floor covering laid thereon. It is provided with a band-shaped covering portion formed of a material that can be bent and deformed between the stepped portion of the ground and the flooring material, and for bending over the entire length of the band-shaped covering portion on the upper surface or the lower surface of the band-shaped covering portion. A stepped portion covering material provided with a concave groove is installed, and the stepped portion of the floor base is covered together with the high stepped portion and the low stepped portion on both sides thereof by the banded covering portion of the stepped portion covering material. Filler is filled in the space between the step portion of the floor base or the space surrounded by the band-shaped covering portion and the step portion of the floor base and the low step portion, and on the corner portion of the high step portion. Has a thin portion of the belt-shaped covering portion formed by the groove for bending, and the flooring is between the floor base and the step covering covering. With city to be glued, which is laid structural flooring forming a non-bonding area between the floor member and the underfloor at both ends Engai the stepped dressing.
At the same time, the thickness of the bending groove of the band-shaped covering portion is less than half the general thickness of the band-shaped covering portion, and the bending groove is arranged in the width direction of the band-shaped covering portion. One band is provided on the lower surface nearer one side than the center, and the upper surface and / or the lower surface of the belt-shaped covering portion are parallel to the groove for bending and are spaced apart from each other in the width direction of the belt-shaped covering portion. A plurality of second concave grooves are provided over the entire length of the portion, and the thickness dimension of the thin portion of the strip-shaped covering portion formed by the second concave groove is the thin thickness of the strip-shaped covering portion formed by the bending concave groove. It is preferable that it is larger than the thickness dimension in the part.

In the step portion covering material of the present invention, a bending groove is provided on the upper surface or the lower surface of the band covering portion, and the bending groove extends in the length direction of the band covering portion over the entire length of the band covering portion. Yes. And, since the thickness dimension of the thin portion of the belt-shaped covering portion formed by bending groove is smaller Ri by general thickness dimensions of the strip covering part, before laying the flooring to underfloor, the step portion When the step portion of the floor base is covered with the high step portion and the low step portion on both sides thereof by the strip covering portion of the covering material, the strip covering portion easily bends and deforms at the thin portion formed by the concave groove for bending, The stepped portion becomes a gently inclined portion along the shape of the ground. Therefore, even if a flooring is laid from above, the shape of the stepped portion is not reflected on the flooring and becomes a gentle slope, so that the appearance of the finished work can be prevented from deteriorating.
By the way, a gap is formed between the band-shaped covering portion and the stepped portion of the floor base, or in the portion surrounded by the band-shaped covering portion and the stepped portion of the floor base and the low stepped portion. Even if there is such a gap, the flooring is sufficiently supported and reinforced by the belt-like covering part of the step part covering material. Decrease drastically. Such inconvenience can be surely solved by filling the gap with a filler as in the flooring construction of the present invention.
Furthermore, the flooring laying structure according to the present invention is such that the flooring is bonded between the floor base and the step covering material with an adhesive, and the floor covering and the floor base outside the both ends of the step covering member. Since the non-adhesive region is formed between the two, the stress accompanying expansion and contraction is dispersed in the non-adhesive region of the flooring.

  The band-shaped covering portion of the step-portion covering material of the present invention is easily bent and deformed easily at the thin portion of the band-shaped covering portion formed by the bending groove, so that the step portion of the floor foundation is bent and deformed. It is easy to cover the high and low steps on both sides of the belt, and the belt-like coating from the stepped portion and the high and low steps on both sides by the repulsive force of the bent strip-shaped coating itself. Can reduce the action of the part to float (especially, it can prevent the edge of the edge of the belt-shaped covering part having a strong tendency to float), and the belt-shaped covering part does not lift from the floor base, The step portion can be made into a beautiful and gentle inclined portion along the shape of the floor base.

  And the thin part of the strip | belt-shaped coating | cover part formed by the concave part groove | channel which the concave groove | channel for bending | flexion is provided in one place in the lower surface nearer one side from the center of the width direction of a strip | belt-shaped coating | coated part The step covering member can be easily installed so that the edge is on the corner of the high step portion, and the edge of the high step portion is easy to lift from the floor base while eliminating unnecessary bending at other parts of the band covering portion. The belt-shaped covering can be neatly placed along the floor base.

Furthermore, when a plurality of second concave grooves whose thickness is smaller than the thin part of the bending groove are provided on the upper surface and / or the lower surface of the belt-like covering part in parallel with the bending groove, The covering portion can be bent more smoothly, and the covering operation of the step portion of the floor base and the high step portion and the low step portion on both sides thereof becomes easier. And since the bending deformation does not occur in a concentrated manner in the bending concave grooves but occurs gradually in the plurality of second concave grooves, it can be fitted neatly along the stepped portion.
In addition, the action of the belt-shaped covering portion floating from the stepped portion and the high step portion and the low step portion on both sides of the stepped portion can be further reduced by the repulsive force of the bent belt-shaped covering portion itself. This makes it easier to follow the floor and minimizes the swelling of the flooring.

The laying structure of the flooring material of the present invention is such that the belt-like covering part and the floor basement are covered with the belt-like covering part of the step part covering material of the present invention before covering the stepped part of the floor base together with the high step part and the low step part on both sides thereof. Fill the gap part to be formed between the step part or the part to be formed in the part surrounded by the band-like covering part and the step part and the lower step part of the floor base. Then, after covering the stepped part of the floor base with the high and low steps on both sides with the belt-shaped covering part, the flooring is laid on the floor base, and the filler is filled in this way. When the stepped portion of the floor base is covered with the high stepped portion and the low stepped portion on both sides of the stepped portion covering material from the stepped portion covering material, the filler is also covered and concealed by the banded covering portion. This eliminates the troublesome work of leveling the filler filled in and repairing it to a gently sloping portion, improving workability.
Moreover, the combing iron for applying the adhesive does not directly hit the filler when the adhesive for flooring is applied, and the pressing force when the flooring is pressed against the floor base does not directly act on the filler. Therefore, it is not necessary to stop the floor laying operation until the filling material reaction is almost completed and the filling material is not plastically deformed as in the prior art. Therefore, since the floor material can be adhered and laid after the covering operation with the step portion covering material, the construction time is much shorter than before, and the construction efficiency is greatly improved.
And by installing the step part covering material so that there is a thin part of the belt-like covering part formed by the bending concave groove on the corner part of the high step part, the tendency of the edge to rise is particularly strong. The band-shaped covering portion on the step side can be easily accommodated along the floor base.

It is sectional drawing which shows the laying structure of the flooring which concerns on one Embodiment of this invention. It is a fragmentary perspective view of the level | step-difference part coating | covering material of this invention used for the laying structure. (A) is sectional explanatory drawing of the level | step-difference part coating | covering material, (b) is the elements on larger scale, (c) is a bottom view. (A), (b), (c), and (d) are all end views of a stepped portion covering material according to another embodiment of the present invention. It is sectional drawing which shows the laying structure of the flooring which concerns on another one Embodiment of this invention. It is sectional drawing which shows the laying structure of the flooring which concerns on other embodiment of this invention. It is sectional drawing which shows the laying structure of the flooring which concerns on the comparative example of this invention (however, a flooring and the adhesive agent for flooring are abbreviate | omitted). It is sectional drawing for description which shows the laying structure of the flooring material relevant to this invention (however, a flooring material and the adhesive agent for flooring materials are abbreviate | omitted).

  The floor material laying structure shown in FIG. 1 has a long and flexible synthetic resin floor material 2 laid on the surface of a floor base material 10 formed by arranging a plurality of base materials 1 made of precast concrete plates. An embodiment is shown, and a step portion covering material 4 of the present invention is installed between a joint step portion 3 and a floor material 2 formed between adjacent base materials 1 and 1. And the joint step part 3 is coat | covered with the high step part 1a and the low step part 1b of the both sides by the strip | belt-shaped coating | cover part 4a of this step part coating | coated material 4, Between this strip | belt-shaped covering part 4a and the joint step part 3 The gap 5 is filled with a filler 5.

  The belt-like covering portion 4a is formed with one bending groove 4b closer to one side than the center in the width direction, and two second grooves 4c are formed on the left and right in the width direction of the belt-like covering portion 4a. ing. And the step part covering material 4 is installed so that the thin part 4d of the belt-shaped covering part by the concave groove 4b for bending is on the high step part corner part 1c.

  In addition, 6 is an existing sealing agent packed in the joint space below the joint step portion 3, and 7 is applied to the surface of the floor base 10 and the surface of the strip-like covering portion 4a of the step portion covering material 4 in a comb shape. Is an adhesive for flooring.

As shown in FIGS. 1 and 2, the step portion covering material 4 includes a belt-like covering portion 4a that covers the joint step portion 3 of the floor base 10 together with the high step portion 1a and the low step portion 1b on both sides thereof. On the lower surface of the intermediate portion in the width direction of the strip-shaped covering portion 4a, a protruding strip portion 4g is formed over the entire length in the length direction of the strip-shaped covering portion 4a. This ridge portion 4g serves as a guide when the step portion covering material 4 is placed and covered on the joint step portion 3, and as shown in FIG. When embedded in the filler 5 of the portion 3, the step portion covering material 4 can be prevented from meandering left and right and coming off from the joint step portion 3.
Even when the filler 5 is not filled, when the protruding portion 4g is fitted into the joint step portion 3, the protruding portion 4g is caught by the corner portion of the high step portion 1a or the corner portion of the low step portion 1b. Thus, the step portion covering material 4 can be prevented from coming off from the joint step portion 3.
Moreover, since the thickness of the width direction intermediate part of the strip | belt-shaped coating | coated part 4a will increase if this convex part 4g is formed, the support and reinforcement effect | action of the flooring 2 by the strip | belt-shaped coating | coated part 4a are also improved.

  The material of the stepped portion covering material 4 is preferably a material that can be bent and deformed, and has strength and rigidity enough to prevent bending or damage even when stepped on with a heeled shoe. There is no particular limitation as long as it has good anti-rust properties and adhesives for flooring. Aluminum is preferably used for metals, soft or semi-rigid vinyl chloride resins, olefin-based resins such as polypropylene and polyethylene are preferably used for synthetic resins, and laminates of metals and resins, Synthetic rubber is also preferably used. If the stepped portion covering material 4 is made of metal, it is formed by a known method such as sheet metal press, bending or extrusion, and if it is made of resin, it is formed by a known method such as extrusion or injection molding.

  When it is desired to remarkably improve the support and reinforcing action by the ridges 4g, the ridges 4g may be formed of a hard material different from the material of the band-shaped cover 4a. For example, in the case of the stepped portion covering material 4 made of synthetic resin, a two-color extrusion molding means is adopted to extrude the strip-shaped covering portion 4a with a soft or semi-rigid thermoplastic resin, and at the same time, the protruding portion 4g is formed. What is necessary is just to extrude with a hard thermoplastic resin.

As shown in the dimension explanatory diagram of FIG. 3, the width W of the band-shaped covering portion 4 a of the stepped portion covering material 4 is usually about 3 to 30 mm because the width of the joint stepped portion 3 of the floor base is sufficiently large. It is appropriate that the width is about 10 to 100 mm that can be coated.
In addition, the general thickness dimension T of the belt-shaped covering portion 4a is preferably thin so that the bulging caused by the belt-shaped covering portion 4a does not easily occur on the surface of the flooring 2. However, the belt-shaped covering portion 4a has a moderate rigidity and Since strength is required, it is appropriate to have a thickness dimension of about 0.3 to 3 mm. Then, the both side edges of the belt-shaped covering portion 4a are made thinner toward the both side ends so that the difference in thickness due to the thickness of the widthwise both-side ends of the belt-shaped covering portion 4a is less likely to occur on the surface of the flooring 2. It is preferable that the upper surface is a gently inclined surface and the thickness dimension t at both ends of the belt-shaped covering portion 4a is as thin as about 0.15 to 1.5 mm.
Moreover, it is preferable that the height dimension h of the ridge part 4g is about 2-5 mm, and the width dimension w is about 1-3 mm.

  In addition, the general thickness dimension of the strip | belt-shaped coating | coated part 4a here refers to the imaginary thickness dimension of the said part when it is assumed that there is no concave groove in the site | part provided with the concave groove.

  Although the protruding line part 4g of the level | step-difference part coating | covering material 4 shown in FIGS. 1-3 has a square cross-sectional shape, the shape of the protruding line part 4g is not limited to this. For example, the lower surface of the convex strip 4g is formed into a rounded convex curved surface so that the existing sealant 6 is not damaged by the lower end of the convex strip 4g, or the cross section of the convex strip 4g is lowered. Increase the adhesion to the filler by making it wide or by forming protrusions and recesses in the width direction of the band-shaped cover on the cross-section of the protrusion 4g so that the protrusion 4g exhibits an anchoring action. It is possible to eliminate the lifting of the stepped portion covering material 4.

  In addition, when the protruding line part 4g interferes with the floor ground and interferes with the covering work or when it is not necessary, the protruding line part 4g can be omitted.

  And it is necessary for the strip | belt-shaped coating | coated part 4a of the level | step-difference part coating | covering material 4 to be provided with the concave groove 4b for bending. The bending groove 4b is provided in at least one position on the upper or lower surface of the belt-like covering portion 4a, and the thickness t1 of the thin portion 4d of the belt-like covering portion 4a formed by the bending groove 4b is the belt-like covering portion. It is smaller (thinner) than half of the general thickness dimension T of 4a. That is, the depth of the concave groove 4b for bending is the deepest part, and the depth is such that the thickness of the belt-shaped covering portion 4a is thinner than half. In consideration of the bendability at the part, the thickness dimension t1 of the thin portion 4d is preferably less than half the general thickness dimension T to about 1/4.

  However, if the thickness dimension t1 of the thin part 4d is too thin, it may cause damage to the belt-shaped covering part 4a or bend excessively, making it difficult to perform the work in reverse. It is necessary to do. The extent depends on the material and general thickness of the belt-shaped covering portion 4a. However, if the belt-shaped covering portion 4a is made of synthetic resin, the thickness t1 of the thin portion 4d is 0.5 mm or more, and the belt-shaped covering portion 4a is a metal. It is desirable that it is 0.15 mm or more. For this reason, since the general thickness dimension of the strip | belt-shaped coating | coated part 4a is about 0.3-3 mm as mentioned above, it is preferable that the depth of the concave groove 4b for bending shall be about 0.15 mm-2.5 mm.

  The width of the bending concave groove 4b is preferably larger (wider) than the above depth from the viewpoint of the flexibility of the belt-shaped covering portion 4a.

  The bending concave groove 4b may be recessed into a triangle whose apex is the apex of the groove, but in that case, stress concentrates on the innermost part and the band-shaped covering part 4a is easily damaged, so the innermost part is flat. It is preferable to form a trapezoidal shape, or to make the innermost part into an arc as shown in FIG. In addition, the thickness dimension t1 of the thin part 4d points out the thickness dimension of the thinnest part formed by the innermost part of a ditch | groove.

  The bending grooves 4b may be provided at a plurality of locations on the upper surface or the lower surface as in the step portion covering materials 41 and 44 in FIGS. 4A and 4D. It is not excluded to form on both the upper surface and the lower surface as the step portion covering materials 42 and 43 shown in FIG. However, if too many bending grooves are provided, the strength of the bending groove 4b may be reduced, and the belt-like covering may be provided at an unnecessary position (for example, the upper part in the joint as shown in FIG. 8). The part does not bend and does not become a beautiful inclined surface. Conversely, in the case of the stepped portion covering material 46 provided with the strip-shaped covering portion 4a that is not provided with any bending concave groove that is outside the scope of the present invention, as shown in FIG. In particular, the edge 4f on the high stage side is lifted, and the floor material laid on the edge 4f rises to cause swelling.

In consideration of the above circumstances, it is desirable to provide the bending grooves 4b at a total of two places, one on each of the high stage side and the low stage side, and the edge part 4f on the high stage side having a strong tendency to lift is provided on the floor base. It is particularly preferable to provide the thin portion 4d only at one location on the high step side so that the thin portion 4d is on the corner portion 1c of the high step portion. As described above, when the bending concave groove 4b is provided only at one location on the high stage side, the belt-shaped covering portion 4a on the low-stage side will not be bent, and the inclination angle of the belt-shaped covering portion 4a becomes gentle and clean. Can be paid.
If the relationship between the high step and the low step on both sides of the step is constant in the length direction, it is preferable to provide the thin portion 4d only at one place on the high step side as described above. However, an irregularity in which one side of the step in the length direction has a high step on the right side as shown in FIG. 1 and the other side has a high step on the left side as opposed to FIG. In the case of a typical step (such an irregular step is often seen, for example, when a precast concrete plate is installed with an inclination), the thin portion 4d is centered in the width direction of the strip-shaped covering portion 4a. It is desirable to provide a total of two places, one on each of the left and right sides. Even in such a case, each thin portion 4d may be installed on the corner portion 1c of the high step portion.

  As shown in FIG. 5, in the case where two bending grooves 4b and 4b are formed, the left and right symmetrical positions on both sides (in other words, both sides of the center line in the width direction) of the protruding strip portion 4g of the strip-shaped covering portion 4a. Although it may be formed in a left-right asymmetric position, it is preferably formed in a left-right asymmetric position from the viewpoint of ease of use of the step portion covering material 4. The reason for this is that when the protrusion 4g interferes with the vertical side wall of the joint step 3 due to the spacing of the joint step 3 and the height difference, the step covering material 4 is installed by reversing left and right, This is because the interference can be prevented.

  The bending groove 4b may be formed on the upper surface or the lower surface of the belt-shaped covering portion 4a. However, when the bending groove 4b is formed on the upper surface, the application work of the floor adhesive 7 by the comb iron is bent. Since there is a possibility of being obstructed by the concave groove 4b, the concave groove 4b is preferably formed only on the lower surface of the strip-shaped covering portion 4a.

  As shown in FIGS. 1 and 3, it is preferable to provide a plurality of second concave grooves 4e in the belt-shaped covering portion 4a in parallel with the bending concave grooves 4b. The thickness dimension t2 of the thin part 4c of the strip-shaped covering part 4a formed by the second concave groove 4e is larger (thick) than the thickness dimension t1 of the thin part 4d by the bending concave groove 4b. Like, it does not bend easily. However, since the second concave groove 4e is provided at a plurality of locations, it bends while sharing the curvature little by little in a wide range, so that the step portion covering material can be easily installed on the step portion and cleanly along the floor base. Can be coated.

  The second groove 4e may be formed on the upper surface and / or the lower surface of the belt-shaped covering portion 4a. However, when the second groove 4e is formed on the upper surface, the same as the case of the bending groove 4b. Since there is a possibility that the application work of the flooring adhesive 7 by the comb irons may be hindered by the second concave groove 4e, the second concave groove 4e is preferably formed only on the lower surface of the belt-shaped covering portion 4a.

  Further, a plurality of the second concave grooves 4e may be provided on the entire upper surface or / and the lower surface of the strip-shaped covering portion 4a with a space between each other. However, the strip-shaped covering portion 4a is gradually formed even in an unnecessary portion. Since the second groove 4e is bent, it is preferable that the second groove 4e is provided from about 1 to about 10 on both sides of the bending groove 4b (on the left and right sides in the width direction of the belt-like covering portion 4a). More specifically, the provision of two to five places is most effective because the belt-like covering portion 4a is bent with a relatively large curvature around the bending groove 4b. In the embodiment shown in FIG. 1 and FIG. 3, two second concave grooves 4e and 4e are provided on each of the upper and lower stages of the bending concave groove 4b. Even in such a case, the bending groove 4b and the second groove 4e are preferably provided with a space between each other, and the pitch is 1 from the viewpoint of bending deformability and workability of the belt-shaped covering portion 4a. It is preferable that it is about ~ 5 mm.

  The second concave groove 4e is formed at a depth such that the thickness of the concave groove forming portion of the band-shaped covering portion 4a is 2/3 to 1/2 of the general thickness dimension T from the viewpoint of the bending deformability of the band-shaped covering portion 4a. It is preferable that the thickness of the belt-shaped covering portion 4a is about 0.3 to 3 mm as described above, and therefore the depth of the groove 4g is preferably about 0.1 to 1.5 mm.

  The flooring laying structure shown in FIG. 1 is such that the above-described stepped portion covering material 4 is installed between the joint stepped portion 3 of the floor base 10 and the flooring 2, and is placed on the corner portion 1c of the high stepped portion. The band-shaped covering portion 4a is bent along the floor base by a certain bending groove 4b and the second groove 4e, and the gap between the band-shaped covering portion 4a and the joint step portion 3 of the step portion covering material 4 is filled. The ridges 4g of the stepped portion covering material 4 are embedded in the filled material 5 and the joint stepped portions 3 are covered together with the high stepped portions 1a and the low stepped portions 1b on both sides of the filler 5 with the band-shaped covered portions 4a. doing. Then, a flooring adhesive 7 is applied in a comb-like manner on the surface of the floor base 10 and the upper surface of the belt-like covering portion 4a, and the flooring 2 is adhered and laid thereon.

  Since the step portion covering material 4 is long, it may be used by cutting it according to the length of the joint step portions 3, 3 (3a), or by adding it if the length is insufficient.

  In addition, the floor base 10 formed by connecting the base materials 1 side by side and spanning between joists such as open corridors, the width of the joint step 3 between the adjacent base materials 1 and 1 is such as temperature and walking of people. 1, as shown in FIG. 1, both side edges of the belt-like covering portion 4 a overlapped with the high step portion 1 a and the low step portion 1 b on both sides of the joint step portion 3 are connected to the high step portion 1 a and the low step portion. 1b is prevented from being strongly adhered, and stress accompanying expansion and contraction of the joint step 3 is made difficult to be applied to the belt-like covering portion 4a, and the non-adhesive regions 9 and 9 of the flooring 2 are formed on both outer sides of the belt-like covering portion 4a. It is preferable to disperse the stress accompanying expansion and contraction in the non-adhesive regions 9 and 9 of the flooring 2. At the time of such construction, from the viewpoint of workability, the side edges of the belt-like covering portion 4a can be relieved of stress with an adhesive or the like on the high step portion 1a and the low step portion 1b on both sides of the joint step portion 3. It is preferable to temporarily fix to both sides or temporarily fix both side edges of the belt-shaped covering portion 4a with an adhesive tape or the like.

  As shown in FIG. 1, the non-adhesive region 9 has a comb-like adhesive for flooring between the surface of the floor base (the surface of the high step 1 a and the low step 1 b) and the back of the floor 2. 7 is a region where the base surface formed by means such as 7 is not applied and the back surface of the flooring material is not bonded. From the viewpoint of appropriately dividing the above-mentioned stretching stress into two parts, this non-bonded region 9 is formed as a belt-shaped covering portion. It is preferable to form over the full length of the strip | belt-shaped coating | coated part 4a along the both outer sides of 4a. The non-adhesion region 9 may be formed on the entire upper surface of the belt-shaped covering portion 4a. However, in this case, the non-adhesion region 9 becomes too wide, and the swelling of the flooring 2 may be noticeable. It is preferable to form on both outer sides of the belt-shaped covering portion 4a.

  The preferred width dimension of the non-adhesion region 9 is about 3 to 50 mm. When the width dimension is larger than this range, the range in which the flooring 2 is swollen becomes too large, and the swelling becomes conspicuous. On the other hand, when the width dimension is smaller than the above range, it becomes difficult to appropriately disperse the stress accompanying expansion and contraction, and when the floor material 2 is swollen, the height of the swelling becomes high, or the floor material 2 The surface of the surface may be easily whitened.

  As a means for forming the non-adhesive region 9, a method of leaving the floor adhesive 7 in a strip shape, a portion corresponding to the non-adhesive region 9 is covered with a masking tape, the floor adhesive 7 is applied, and the masking tape Is a method of removing the adhesive 7 for flooring and a method of sticking a portion corresponding to the non-adhesive region 9 of the flooring 2 to the surface of the floor substrate 10 with an adhesive tape (in this case, also on the adhesive tape) Even if the adhesive for flooring is applied in the shape of a comb, the adhesive layer made of adhesive tape is interposed between the floor base of the part and the back of the flooring. Etc. can be adopted. As the above-mentioned adhesive tape, a tape substrate (paper, woven fabric, nonwoven fabric, resin, foamed resin, rubber, metal foil, etc.) and an adhesive layer (acrylic, rubber-based, preferably butyl rubber-based, urethane-based) Water-resistant, aging-resistant, and heat-resistant adhesive layers such as resins) having a tape thickness of 0.1 to 3 mm and a tape width of 3 to 100 mm are used.

  The flooring 2 is a flooring having a thickness of about 1 to 3 mm formed of a soft vinyl chloride resin or a polyolefin resin, and a glass fiber layer is laminated as an intermediate layer, or a nonwoven fabric layer is laminated on the back surface. Those are preferably used.

  The flooring adhesive 7 is preferably a curable adhesive that is mixed with a reaction initiator or starts to react by moisture and that is relatively hard after curing. However, a flexible type may be used even after curing. Typical examples of the flooring adhesive preferably used include a moisture curable one-component urethane resin adhesive, a two-component mixed curable epoxy resin adhesive, and a moisture curable silicone resin adhesive.

  Further, as the filler 5, a reaction type filler that is mixed with a reaction initiator or that starts reaction by moisture is used. When filling the joint level difference part 3 where the joint width easily expands and contracts, a flexible type is preferably used even after the reaction is completed. Typical examples of the filler preferably used include a moisture curable one-component urethane resin, a two-component mixed curable epoxy resin, and a moisture curable silicone resin.

  In the floor material laying structure shown in FIG. 1 described in detail above, the joint step 3 of the floor base 10 is covered together with the high step portion 1a and the low step portion 1b on both sides thereof by the belt-like covering portion 4a of the step portion covering member 4. Since the joint step 3 is a gently sloping portion, the shape of the joint step 3 is not reflected on the floor material 2 bonded and laid on the surface of the floor base 10 from above. Therefore, it is possible to suppress the deterioration of the appearance of the construction finish. Moreover, since the portion covering the joint step 3 of the flooring 2 is sufficiently supported and reinforced by the step covering 4 and the filler 5, the flooring 2 can be applied even if it strikes with the heel of a shoe or the tip of an umbrella. Problems such as perforations can be reliably resolved.

  Further, the flooring laying structure in FIG. 1 is such that the gap 5 that is to be formed between the band-shaped covering portion 4a and the joint step portion 3 of the floor base 10 is filled with the filler 5, and the band-shaped covering portion 4a After covering the joint step 3 together with the high step 1a and the low step 1b on both sides, the flooring 2 is bonded and laid on the surface of the floor base 10 with the adhesive 7, and is filled in this way. After filling the material 5 and covering the joint step portion 3 and both side portions of the floor base with the belt-like covering portion 4a of the step portion covering material 4, the filler 5 is also covered and concealed by the belt-like covering portion 4a. As described above, the troublesome work of leveling the filler filled in the joint step portion and repairing it to the gently inclined portion becomes unnecessary, and the workability is improved. Moreover, since the combing iron for applying the adhesive does not directly hit the filler 5 when the floor adhesive 7 is applied, or the pressing force does not directly act on the filler 5 when the floor 2 is pressed. Thus, it is not necessary to stop the floor laying operation until the filling material reaction is almost completed and the filling material is not plastically deformed as in the prior art. Therefore, since the floor material 2 can be bonded and laid after the step portion covering material 4 is covered, the construction time is much shorter than before, and the construction efficiency is greatly improved.

  The floor laying structure shown in FIG. 6 exemplifies an embodiment in which the flooring 2 is laid on a floor base 11 formed by placing concrete, and a normal step portion existing in the floor base 11 31 and the floor material 2 laid on the surface of the floor base 11 is provided with a step portion covering material 41, and the stepped portion 31 of the floor base 11 is formed by the belt-like covering portion 4 a of the step portion covering material 41. It is covered together with the high step portion 1a and the low step portion 1b on both sides. The filler 5 is filled in the space surrounded by the band-shaped covering portion 4a, the step portion 31 of the floor base 11, and the low step portion 1b. In this laying structure, since stress due to expansion and contraction does not occur in the vicinity of the stepped portion 31, the entire back surface of the flooring 2 is bonded with the flooring adhesive 7, and the non-bonding shown in FIG. The region 9 is not provided.

  Such a floor laying structure also has the same effects as the floor laying structure of FIG. 1 described above.

DESCRIPTION OF SYMBOLS 1 Base material 2 Floor material 3 Joint step part 31 Step part 4,41,42,43,44 Step part coating | covering material 4a Band-shaped coating part 4b Bending groove 4c Second groove 4d Band-shaped coating part by bending groove 4e Thin portion of the belt-like covering portion due to the second concave groove 4g Convex strip 5 Filler 7 Adhesive for flooring 9 Non-adhesive area 10, 11 Floor base

Claims (4)

A flooring laying structure comprising a floor base with a stepped portion and a flooring laid thereon,
A belt-shaped covering portion formed of a material that can be bent and deformed is provided between the step portion of the floor base and the floor material, and the upper surface or the lower surface of the belt-shaped covering portion is bent over the entire length of the belt-shaped covering portion. A step covering material provided with a concave groove is installed ,
The step portion of the floor base is covered with the high step portion and the low step portion on both sides thereof by the band covering portion of the step portion covering material,
Filler is filled in the space between the band-shaped covering portion and the step portion of the floor base, or the space surrounded by the band-shaped covering portion and the step portion of the floor base and the low step portion,
Thin portions of the strip-shaped covering portion there is formed by bending grooves on the corners of the high-stage portion is,
The flooring is bonded with an adhesive between the floor base and the step covering material,
Laying structure of flooring, characterized in that the formation of the non-adhesion area between the floor member and the underfloor at both ends Engai of the step coverage material.
The laying structure for a flooring according to claim 1, wherein the bending groove of the belt-shaped covering portion has a thickness dimension in a thin portion of the belt-shaped covering portion that is smaller than half of a general thickness dimension of the belt-shaped covering portion.
3. The floor laying structure according to claim 1, wherein the concave groove for bending is provided at one location on a lower surface closer to one side than the center in the width direction of the belt-shaped covering portion.
A plurality of second grooves are provided on the upper surface and / or lower surface of the belt-shaped covering portion, parallel to the groove for bending, and spaced from each other in the width direction of the belt-shaped covering portion over the entire length of the belt-shaped covering portion. And
The thickness dimension in the thin part of the strip-shaped covering part formed by the second concave groove is larger than the thickness dimension in the thin part of the strip-shaped covering part formed by the bending concave groove. Item 4. A floor laying structure according to any one of Items 3 to 4.

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