JP2012225110A - Buffer for floating floor - Google Patents

Abstract

[PROBLEMS] To separate and use a part of a buffer body as a rising part, and to be able to separate a rising part at a fixed position, so that stable construction quality can be easily obtained, and further, transportation to a construction site, etc. An object of the present invention is to provide a floating floor cushion that is not bulky.
A notch 19 for cutting off a portion having a predetermined width from one end is formed in the back surface 11B of the plate-like body without penetrating to the surface 11A of the plate-like body, and the cut-off position is provided. In the case of not separating at 19, the entire floating floor cushion 10 is placed on the concrete slab floor. On the other hand, if it is separated at the cutting position 19, one of the separated parts is placed on the concrete slab floor. It was used as the part 41 to be placed, and the other separated part was configured to be used as a rising part 43 with respect to the peripheral wall surface of the concrete slab floor.
[Selection] Figure 1

Description

  The present invention relates to a floating floor cushion.

Conventionally, in a building having a concrete floor, there is a floating floor structure as a structure for reducing vibration and noise transmitted on the floor surface.
In the floating floor structure, as shown in FIG. 16 (16-A), a cushioning body 511 made of a foam is placed on a concrete slab floor 501, and the slab floor 501 has a wall surface rising from the periphery. A rising portion 513 made of a foam is disposed so as to contact 503, and concrete (which may be a mortar) 505 is placed on the buffer 511. The buffer body 511 is made of a plate-like foam, and a through hole (not shown) penetrating between the front surface and the back surface is formed at a predetermined position, and the through hole is made of rubber having higher rigidity than the buffer body 511. An anti-vibration elastic body may be inserted. When the rising portion 513 is used by raising (standing) a flat plate, or when the rising portion 513 has an L-shaped cross-section like the rising portion 513A shown in (16-B) of FIG. (Patent Documents 1, 2, and 3).

However, conventionally, two types of a shock absorber placed on the slab floor and a rising portion to be used by raising must be prepared, and there is a problem that it takes time and effort to manage product numbers and inventory. In addition, when the rising portion is flat, the rising portion tends to fall during construction, and when it falls, there is a problem that it takes time to repair. On the other hand, the rising portion having the L-shaped cross section has a problem that it becomes bulky during transportation, storage, and the like.
In addition, a part of the buffer is cut off at the construction site and used as a flat plate-like rising part, but in that case, the cutting position is difficult to be fixed, and it takes time and effort for cutting. Since the rising part sometimes falls easily, there is a problem that it is difficult to obtain stable construction quality and the construction time becomes long.

Japanese Patent Laid-Open No. 61-294063 Japanese Patent Laid-Open No. 2001-200269 JP 2003-3002 A

  The present invention has been made in view of the above-mentioned points, and can be used by separating a part of the buffer body as a rising portion, and stable construction quality can be achieved by enabling separation at a certain separation position. Furthermore, it is an object of the present invention to provide a floating floor cushion that is not bulky when transported to a construction site or the like and that makes it difficult for the rising portion to collapse during construction.

  The invention of claim 1 is a floating floor cushion arranged on a concrete slab floor, which is made of a foam plate-like body, and the plate-like body has a notch for cutting off a portion of a predetermined width from one end. The structure is formed on the back surface of the plate-like body without penetrating to the surface of the plate-like body, and when not cut off at the cutting position, the entire floating floor cushion is mounted on a concrete slab floor. On the other hand, when separated at the cutting position, the separated one part is used as a part to be placed on the concrete slab floor, and the separated other part is used as the concrete slab floor. It is used as a rising part with respect to the peripheral wall surface.

  According to a second aspect of the present invention, in the first aspect of the present invention, in the first cut, the deep cut portion and the shallow cut portion are alternately formed, or the cut portion and the non-cut portion. Are alternately formed.

  A third aspect of the present invention is the first or second aspect of the present invention, wherein the incision is a concavo-convex shape in which a convex part protruding from one end of the plate-like body and a concave concave part are adjacent to each other in the length direction of the notch. And when the part is placed by the cut, the part placed on the concrete slab floor and the rising part of the concrete slab floor with respect to the wall surface of the concrete are the parts cut by the uneven cut. It is characterized by constituting engaging portions that engage with each other.

  According to a fourth aspect of the present invention, in the third aspect of the present invention, the concavo-convex cut is formed such that the convex portion narrows toward one end of the plate-like body, and the concave portion is the plate-like body. It is characterized by being formed with a wider width toward one end thereof.

  According to a fifth aspect of the present invention, in the fourth aspect of the present invention, in the concave-convex shape incision, the convex portion and the side portion of the concave portion are formed in a step shape, and the width of the convex portion is the width of the plate-like body The width of the concave portion is gradually reduced toward one end and the width of the concave portion is increased stepwise toward one end of the plate-like body.

  According to the first aspect of the present invention, since a rising part can be obtained by separating a floating floor cushion at a cutting position at a construction site without preparing a rising part separately, product number management, inventory management, etc. It becomes easy. Furthermore, since the rising portion can be cut off at a fixed position due to the presence of the cut, stable construction quality can be obtained. In addition, the floating floor cushion according to the present invention is flat when transported or stored to a construction site or the like, and is not bulky and does not take up space, thereby reducing transportation costs and storage costs. . In addition, since the notch formed on the back surface of the plate-like body does not penetrate to the surface, at the time of construction of the floating floor, in the part of the floating floor buffer placed on the concrete slab floor without separating at the cutting position, There is no possibility that the concrete cast on the floating floor cushion will leak downward through the notch of the floating floor cushion, and the construction can be performed satisfactorily.

  According to the invention of claim 2, the cut formed on the back surface of the floating floor cushion is formed by alternately forming the deeply cut portions and the shallowly cut portions, or by the cut portions. Since the uncut portions are alternately formed, when the floating floor cushioning body is placed on the concrete slab floor without being cut off at the cutting position, it is a linear cutting line with continuous cutting. Compared to the formed one, the strength reduction can be suppressed in the shallow cut part or the non-cut part that is not cut, and when a load is applied on the floating floor buffer, it is locally at the cut position. It can be prevented from being greatly bent or broken.

  According to the invention of claim 3, the portion placed on the concrete slab floor and the rising portion with respect to the peripheral wall surface of the concrete slab floor are engaged with each other by the portions cut by the concave and convex cuts. Since the parts are configured, engaging the mutual engaging parts at the time of construction and arranging them on the slab floor and the wall surface can prevent the rising part from falling or slipping off, making the construction work efficient It can be carried out.

  According to the invention of claim 4, the concave and convex cut is formed such that the convex portion is narrowed toward one end of the plate-like body and the concave portion is directed to one end of the plate-like body. When the floating buffer is separated into a rising part and a part to be placed on the concrete slab floor by a concave-convex cut, the concave engaging part formed is formed. And the convex engaging portion has a narrow width at the base of the concave engaging portion and a wide width at the base of the convex engaging portion. In addition, when the rising portion and the portion placed on the concrete slab floor are combined, the concave engaging portion and the engaging portion that are engaged with each other are the same convex shape portion or the same in the concave and convex cut. The concave engagement portion and the convex engagement portion formed by one convex shape portion or the concave engagement portion in the concave-convex cut are the base portion of the concave engagement portion. The side (back side) becomes narrower than the width of the base side of the convex engagement part, and the base side of the convex engagement part becomes wider than the width of the base side of the concave engagement part.

  When the separated rising part is raised and combined with each other engaging part on the upper surface side of the part placed on the concrete slab floor, the downward concave engaging part and the convex part at the rising part The engaging portion has the smallest width on the base side at the upper end of the concave engaging portion and the widest width on the base side at the upper end of the convex engaging portion. And, on the upper surface side of the portion placed on the concrete slab floor, the convex engagement of the portion placed on the concrete slab floor on the narrowest base side of the upper end of the concave engagement portion of the rising portion The base side of the convex engaging part which is wider than the base side of the concave engaging part of the rising part is compressed and engaged, and the uppermost width of the upper end of the convex engaging part of the rising part is The wide base side is compressed to the base side of the concave engagement portion which is narrower than the base side of the convex engagement portion of the rising portion in the concave engagement portion of the portion placed on the concrete slab floor. Because of the engagement, the engaging portions of each other are firmly and closely engaged. Therefore, on the upper surface side of the part placed on the concrete slab floor, the engaging part of the rising part and the engaging part of the part placed on the concrete slab floor are firmly and closely engaged, and the rising part is While being able to hold | maintain reliably, it can prevent that the concrete cast | placed after that leaks from the engaging part of the standing part, and the engaging part of the part mounted in a concrete slab floor.

  According to the invention of claim 5, as in the case of claim 4, on the upper surface side of the part placed on the concrete slab floor, the engaging part of the rising part and the part placed on the concrete slab floor The engaging part of the slab is firmly and closely engaged, and the rising part can be securely held, and the concrete to be placed thereafter is placed on the engaging part of the rising part and the concrete slab floor It is possible to prevent leakage from the engaging portion. Furthermore, according to the invention of claim 5, the side of the engaging portion of the rising portion separated by cutting and the portion placed on the concrete slab floor is stepped. Therefore, when the rising part is raised and the engaging part of the rising part is engaged with the engaging part of the part placed on the concrete slab floor, the engaging part comes into contact with the stepped part. In addition, it is possible to more reliably and stably adhere and hold the rising portion more reliably, and it is possible to more reliably prevent the concrete placed thereafter from leaking from the engaging portion.

It is the front view and back surface figure of the buffer body for floating floors which concern on 1st Embodiment of this invention. It is sectional drawing of each position in the shock absorber for floating floors of FIG. It is a perspective view which shows the example of a sewing machine blade. It is a surface view of the state which cut away the buffer for floating floors of FIG. It is a perspective view which shows the time of separating and combining the buffer body for floating floors of FIG. It is sectional drawing which shows the floating floor structure using the buffer for floating floors of 1st Embodiment. It is a figure of the state separated from the back view of the buffer for floating floors concerning 2nd Embodiment. It is a perspective view which shows the time of combining after isolate | separating the buffer body for floating floors of FIG. It is a figure of the state separated from the back view of the buffer for floating floors concerning 3rd Embodiment. It is a perspective view which shows the time of combining after isolate | separating the buffer body for floating floors of FIG. It is the front view and back surface figure of the buffer body for floating floors which concern on 4th Embodiment of this invention. It is sectional drawing of each position in the shock absorber for floating floors of FIG. It is a surface view of the state which cut away the buffer for floating floors of FIG. It is a perspective view which shows the state which isolate | separated and combined the buffer body for floating floors of FIG. It is sectional drawing which shows the floating floor structure using the buffer for floating floors of 4th Embodiment. It is sectional drawing which shows the floating floor structure using the conventional buffer body for floating floors.

  Below, the buffer body for floating floors of embodiment of this invention is demonstrated. A floating floor cushion 10 according to the first embodiment shown in FIGS. 1 and 2 is used in the floating floor structure, and includes a portion 41 placed on a concrete slab floor, and a concrete slab floor periphery. It can be used separately from the rising portion 43 with respect to the wall surface.

  The floating floor cushion 10 is composed of a foam plate 11. As the foam, a foam having a closed cell structure such as a polystyrene resin foam, a polypropylene resin foam, and a polyethylene resin foam is preferable. Moreover, since the said foam by a bead method is easy to separate finely when cut | disconnecting, what formed the predetermined shape by cutting etc. of extrusion molding or a continuous slab foam is preferable. The shape of the plate-like body 11 is not particularly limited, but since the floor of the floating floor structure is usually a quadrangle, the shape in plan view is preferably a quadrangle, particularly a square or a rectangle. As an example of the plate-like body 11, a square shape having a side of 950 mm on a side is exemplified. As for the thickness of the plate-shaped body 11, ie, the thickness of the buffer body 10 for floating floors, about 15-60 mm is preferable. As an example, a case where the thickness of the plate-like body 11 is 25 mm is given.

The plate-like body 11 has a through-hole 14 for inserting a vibration-proof elastic body made of high-density polyurethane foam, rubber or the like having higher rigidity than the floating floor cushion 10. And the back surface 11B.
In addition, the back surface 11 </ b> B of the plate-like body 11 is formed with a notch 19 for separating a portion having a predetermined width from the one end 15 as a rising portion 43. The one end 15 of the plate-like body 11 is one side of a square (square) in the illustrated example. The width of the rising portion 43 (interval t1 between the one end 15 and the notch 19) includes concrete (including mortar) placed on a buffer placed on a concrete slab floor in the floating floor structure. The same shall apply hereinafter)). The rising portion 43 has a substantially rectangular plate shape.

  The cut 19 is formed in the back surface 11B of the plate-like body 11 without penetrating to the front surface 11A of the plate-like body 11. In addition, reference numeral 23 in FIG. 2 denotes an uncut portion left on the surface 11A side of the plate-like body 11 at the position of the cut 19.

  The notches 19 are perforated cuts in which deeply cut portions and shallow cut portions are alternately formed, or cut portions and uncut (non-cut) portions are alternately arranged. It consists of perforated cuts that are formed.

  The sewing blade 31 shown in (3-A) of FIG. 3 is an example of a sewing blade for forming a perforated cut having alternately cut portions and non-cut portions. Reference numeral 32 denotes a blade portion that forms a cut portion, and reference numeral 33 denotes a portion that forms a non-cut portion. A sewing blade 31A shown in (3-B) of FIG. 3 is an example of a sewing blade for forming a perforated cut having alternating deep cut portions and shallow cut portions. Reference numeral 32A is a blade portion forming a deep cut portion, and reference numeral 33A is a portion forming a shallow cut portion. The length of the cut portion (length a1 of the blade 32), the length of the portion to be cut deeply (length b1 of the blade 32A), the length of the non-cut portion (interval a2 of the cut portion), and the length of the portion to be cut shallowly The length (the length b2 of the blade 33A) is determined as appropriate. As an example, the length of the cut portion (the length a1 of the blade 32) and the length of the deep cut portion (the length b1 of the blade 32A) are not cut. A case will be described in which the length of the portion (ie, the interval a2 between the cut portions) and the length of the shallow cut portion (the length b2 of the blade 33A) are each 5 mm.

  Further, the depth of the notch 19 from the back surface 11B of the plate-like body 11 is preferably a depth at which when the load is applied to the surface of the floating floor cushion 10 during construction of the floating floor, it is difficult to cause breakage at the incised portion. Although depending on the material of the plate-like body 11, an example in which a deep cut is about 2/3 of the thickness of the plate-like body 11 and a shallow cut is about 1/3 of the thickness of the plate-like body 11 is given.

  As shown in FIG. 1 (1 -B), the notch 19 protrudes from one end 15 (one side in the illustrated example) of the plate-like body 11 (that is, toward the one end 15). The recessed concave portion 21 is formed in an uneven shape adjacent to the cut 19 in the length direction n. The distance t1 from the one end 15 to the convex portion 20 of the notch 19 is substantially equal to the thickness of the concrete placed on the shock absorber placed on the concrete slab floor in the floating floor structure. An example of t1 is 100 mm. The difference between t2 and t1 is preferably substantially equal to the thickness of the plate-like body 11.

  The floating floor cushion 10 is cut into a portion 41 placed on the concrete slab floor and a rising portion 43 with respect to the wall surface of the concrete slab floor by cutting the position of the notch 19 with a knife or the like. be able to. As shown in FIG. 4, engaging portions 41a, 41b, 41c, 41d, 41e, 43a, 43b, 43c, 43d, and 43e are formed on the portions 19a and 19b cut by the notch 19. The Engagement portions 41a, 41c, 41e formed on the portion 41 placed on the concrete slab floor are concave engagement portions cut by the concave shape portion 21 of the notch 19, and the engagement portion 41b. , 41d are convex engaging portions cut by the convex portion 20 of the cut 19. On the other hand, the engaging parts 43a, 43c, 43e formed on the rising part 43 are convex engaging parts cut by the concave part 21 of the notch 19, and the engaging parts 43b, 43d are It is a concave engagement portion cut by the convex portion 20 of the cut 19. The concave engaging portions 41a, 41c, 41e formed on the portion 41 placed on the concrete slab floor and the convex engaging portions 43a, 43c, 43e formed on the rising portion 43 are fitted together. The engaging portions 41b and 41d formed in the portion 41 that is engaged and placed on the concrete slab floor and the engaging portions 43b and 43d formed in the rising portion 43 are fitted together. To engage.

  The required number of the floating floor cushions 10 are stacked in a flat plate-like state before being cut off by the notches 19 when transporting and storing to a construction site or the like. Therefore, the plurality of floating floor cushions 10 can be transported or stored without being bulky, and the transportation cost and storage cost can be reduced.

  The case where a floating floor is constructed using the cushioning body 10 for floating floor will be described. When the floating floor is constructed, the necessary number of floating floor cushions 10 is transported to the construction site. At the construction site, as shown in FIG. 4, the floating floor cushion 10 a that is partly cut to form a rising portion is placed on a concrete slab floor by cutting the position of the cut 19 with a knife or the like. And a rising portion 43 with respect to the wall surface of the concrete slab floor periphery. The engagement portions 41a to 41e and 43a to 43e are formed in the portions 19a and 19b cut by the cut 19 by the separation on the portion 41 and the rising portion 43 placed on the separated concrete slab floor. .

  Next, as shown in FIGS. 5 (A) and 5 (B), the engaging portions 41a to 41e of the portion 41 placed on the concrete slab floor and the engaging portion 43 are engaged. By fitting and engaging the portions 43a to 43e, the portions 43a to 43e are combined in a state where the rising portion 43 is raised at the edge of the portion 41 placed on the concrete slab floor. Then, as shown in FIG. 6, the rising portion 43 is disposed so as to abut on the wall surface 53 at the periphery of the concrete slab floor 51, and the portion 41 placed on the concrete slab floor is placed on the concrete slab floor. 51. In some cases, a plastic film such as a polyethylene film is laid in advance on the concrete slab floor 51.

  On the other hand, with respect to the floating floor cushion 10b to be used without being separated, the entire floating floor cushion 10b is placed on the concrete slab floor 51 so that the rear surface 11B faces downward without being separated by the notch 19. It is placed and spread inside the portion 41 placed on the concrete slab floor in the floating floor cushion 10a. A vibration-proof elastic body 45 made of high-density polyurethane foam, rubber or the like having higher rigidity than the floating floor cushion is provided in the through hole 14 of the floating floor cushion before the floating floor cushion is arranged or the floating floor buffer. Insert after body placement. Thereafter, concrete 57 is placed on the portion 41 placed on the concrete slab floor of the floating floor cushion 10a and the floating floor cushion 10b. At the time of the construction, the rising portion 43 is engaged with the portion 41 placed on the concrete slab floor, so that it is difficult to fall down or be displaced, and the construction can be performed efficiently and with stable quality. it can.

  In addition, the notches 19 are formed by alternately forming deeply cut portions and shallowly cut portions, or alternately forming cut portions and uncut portions. Since a decrease in strength can be suppressed at the cut portion or the non-cut portion, even when a load is applied in the vicinity of the cut 19 in the floating floor buffer 10b when the concrete 57 is placed, the cut is shallow. It can be supported by the portion or the non-cut portion, and it can be prevented from being bent or broken locally at the cut position. Further, since the notch 19 is formed on the back surface and does not penetrate to the front surface, in the floating floor cushion 10b, the concrete 57 placed on the floating floor cushion 10b is formed on the floating floor cushion 10b. There is no risk of leaking downward through the cut 19, and construction can be performed satisfactorily.

  FIG. 7 shows a floating floor cushion 100 according to the second embodiment. The floating floor cushion 100 according to the second embodiment is an example in which a notch 190 having an uneven shape different from that of the first embodiment is formed on the back surface 110B of the plate-like body 110 having a quadrilateral plan view made of foam. The cut 190 has a perforation as described in the first embodiment. The floating floor cushion 100 according to the second embodiment has a convex shape in which the concave-convex cut 190 projects from one end 150 (one side in the illustrated example) of the plate-like body 110 (that is, toward one end 150). The concave portions 200a, 200c, and 200e that are recessed with the portions 200b and 200d are formed in a concave and convex shape adjacent to each other in the length direction u of the notch 190, and the convex portions 200b and 200d are the plate-like body 110. The width wb and wd are gradually narrowed toward one end 150 of the concave portion 200c, and the width wc of the concave portion 200c is gradually widened toward the one end 150 of the plate-like body 110. Thus, unlike the floating floor cushion 10 of the first embodiment, other configurations are the same as the floating floor cushion 10 of the first embodiment. Reference numeral 140 denotes a through-hole for inserting a vibration-proof elastic body made of high-density polyurethane foam or rubber having a rigidity higher than that of the cushion for floating floor, and 410 is a portion placed on a concrete slab floor when cut off Reference numeral 430 denotes a rising portion.

  When the floating floor cushion 100 is constructed, the position of the notch 190 is cut with a knife or the like as necessary, and the portion 410 to be placed on the concrete slab floor and the peripheral wall surface of the concrete slab floor are separated. Separated from the rising portion 430. In the portion 410 and the rising portion 430 placed on the concrete slab floor, the engagement portions 410a, 410b, 410c, 410d, 410e, 430a, 430b, 430c are formed on the portions 190a, 190b cut by the notch 190. 430d and 430e are formed. The engaging portions 410a, 410c, 410e formed on the portion 410 placed on the concrete slab floor are concave engaging portions cut by the concave portions 200a, 200c, 200e of the notch 190, and The engaging portions 410b and 410d are convex engaging portions cut by the convex portions 200b and 200d of the notch 190. Meanwhile, the engaging portions 430a, 430c, and 430e formed on the rising portion 430 are convex engaging portions cut by the concave portions 200a, 200c, and 200e of the notch 190, and the engaging portions 430b, Reference numeral 430d denotes a concave engagement portion cut by the convex portions 200b and 200d of the cut 190.

  In the floating floor cushion 100, the convex portions 200b and 200d of the notch 190 are formed with the widths wb and wd narrowed toward the one end 150 of the plate-like body 110. The concave engaging portions 430b and 430d of the rising portion 430 formed by the 200d cut have the widths m1b and m1d that are the narrowest on the base side (back side) 430b1 and 430d1, while the concave shaped portions 200c are cut. The formed convex engagement portion 430c of the rising portion 430 has the widest width m1c on the base side 430c1. Further, the convex engagement portions 410b and 410d of the portion 410 placed on the concrete slab floor formed by the notches of the convex portions 200b and 200d have the widths m2b and m2d that are the largest on the base side 410b1 and 410d1. On the other hand, the concave engagement portion 410c of the portion 410 placed on the concrete slab floor formed by cutting the concave shape portion 200c has the smallest width m2c on the base side 410c1. Further, the widths m1b and m1d of the base sides 430b1 and 430d1 in the concave engaging portions 430b and 430d of the rising portion 430 are the bases of the convex engaging portions 410b and 410d of the portion 410 placed on the concrete slab floor. The widths m2b and m2d of the sides 410b1 and 410d1 become narrower. Further, the width m1c of the base side 430c1 in the convex engagement part 430c of the rising part 430 is wider than the width m2c of the base side 410c1 in the concave engagement part 410c of the part 410 placed on the concrete slab floor. Become.

  As shown in (8-A) and (8-B) of FIG. 8, the separated rising portion 430 is an engagement portion of the portion 410 placed on the concrete slab floor in the raised state. The engaging portions 410a to 410e of the portion 410 that is combined with the position from above and placed on the concrete slab floor are engaged with the engaging portions 430a to 430e of the rising portion 430 to engage with each other. The convex engaging portions 430a, 430c, and 430e of the rising portion 430 are inserted downward and engaged with the concave engaging portions 410a, 410c, and 410e of the portion 410 placed on the concrete slab floor. On the other hand, the concave engaging portions 430b and 430d of the rising portion 430 are engaged downwardly and engaged with the convex engaging portions 410b and 410d of the portion 410 placed on the concrete slab floor. .

  Base sides 430b1 and 430d1 of the concave engaging portions 430b and 430d of the rising portion 430 are wider than the base sides 410b1 and 410d1 of the convex engaging portions 410b and 410d of the portion 410 placed on the concrete slab floor. Therefore, the compression of the convex engaging portions 410b and 410d of the portion 410 placed on the concrete slab floor becomes large, and the concave engaging portions 430b and 430d of the rising portion 430 and the concrete are compressed. Engagement with the convex engaging portions 410b and 410d of the portion 410 placed on the slab floor becomes strong and dense. Further, the base side 430c1 of the convex engagement portion 430c of the rising portion 430 is wider than the base side 410c1 of the concave engagement portion 410c of the portion 410 placed on the concrete slab floor. The compression of the convex engagement portion 430c of the rising portion 430 is increased, and the convex engagement portion 430c of the rising portion 430 and the concave engagement portion 410c of the portion 410 placed on the concrete slab floor, The engagement becomes strong and dense. As a result, on the upper surface side of the portion 410 placed on the concrete slab floor, the engaging portion of the rising portion 430 and the engaging portion of the portion 410 placed on the concrete slab floor are firmly and tightly engaged. In addition, the rising portion 430 can be securely held, and the concrete to be placed thereafter leaks from the engaging portion of the rising portion 430 and the engaging portion of the portion 410 placed on the concrete slab floor. Can also be prevented.

  FIG. 9 shows a floating floor cushion 101 according to the third embodiment. In the floating floor cushion 101 of the third embodiment, a concave-convex cut 191 different from the first embodiment and the second embodiment is formed on the back surface 111B of the plate-like body 111 having a quadrilateral plan view made of foam. It is an example. The cuts 191 are perforated as described in the first embodiment. In the third embodiment, the concave and convex cuts 191 are recessed with convex portions 201b and 201d protruding from one end 151 (one side in the illustrated example) of the plate-like body 111 (that is, toward one end 151). The concave-shaped portions 201a, 201c, 201e are formed in a concavo-convex shape adjacent in the length direction v of the cut 191 and the side portions 202 of the convex-shaped portion and the concave-shaped portion are stepped, The widths zb and zd of the convex portions 201b and 201d are gradually reduced toward the one end 151 of the plate-shaped body 111, and the width zc of the concave-shaped portion 201c toward the one end 151 of the plate-shaped body 111. Is different from the floating floor cushion 10 according to the first embodiment and the floating floor cushion 100 according to the second embodiment, and other configurations are different from the floating floor cushion 10 according to the first embodiment. And the second It is similar to the floating floor buffer member 100 of the embodiment. Reference numeral 141 is a through-hole for inserting a vibration-proof elastic body made of high-density polyurethane foam or rubber having higher rigidity than the floating floor cushion, and 411 is a portion placed on a concrete slab floor when cut off , 431 are rising portions.

  When the floating floor cushion 101 is constructed, the position of the notch 191 is cut with a knife or the like as necessary to construct a portion 411 to be placed on the concrete slab floor and the peripheral wall surface of the concrete slab floor. Separated from the rising portion 431. In the portion 411 and the rising portion 431 placed on the concrete slab floor, the engaging portions 411a, 411b, 411c, 411d, 411e, 431a, 431b, 431c, and the portions 191a, 191b cut by the notch 191 are provided. 431e is formed as a step S on the side of each engaging portion.

  Engagement portions 411a, 411c, and 411e formed on the portion 411 placed on the concrete slab floor are concave engagement portions cut by the concave shape portions 201a, 201c, and 201e of the cut 191. The engaging portions 411b and 411d are convex engaging portions cut by the convex shape portions 201b and 201d of the cut 191. On the other hand, the engaging portions 431a, 431c, and 431e formed on the rising portion 431 are convex engaging portions cut by the concave portions 201a, 201c, and 201e of the notch 191 and the engaging portions 431b, Reference numeral 431d denotes a concave engagement portion cut by the convex portions 201b and 201d of the cut 191.

  The floating floor cushion 101 is formed so that the convex portions 201b and 201d of the cut 191 are formed with the widths zb and zd narrowed stepwise toward one end 151 of the plate-like body 110. The concave engaging portions 431b and 431d of the rising portion 431 formed by cutting the portions 201b and 201d have widths x1b and x1d that are narrowest on the base side (back side) 431b1 and 431d1, while the concave shape portion 201c The convex engagement portion 431c of the rising portion 431 formed by the notch is the largest in width x1c on the base side 431c1.

  Further, the convex engagement portions 411b and 411d of the portion 411 placed on the concrete slab floor formed by cutting the convex portions 201b and 201d have the widths x2b and x2d that are the most on the base side 411b1 and 411d1. On the other hand, the concave engagement portion 411c of the portion 411 placed on the concrete slab floor formed by cutting the concave shape portion 201c has the smallest width x2c on the base side (back side) 411c1. .

  Furthermore, the widths x1b and x1d of the base sides 431b1 and 431d1 of the concave engaging portions 431b and 431d of the rising portion 431 are the bases of the convex engaging portions 411b and 411d of the portion 411 placed on the concrete slab floor. The widths x2b and x2d of the sides 411b1 and 411d1 are narrower. Further, the width x1c of the base side 431c1 in the convex engagement portion 431c of the rising portion 431 is wider than the width x2c of the base side 411c1 of the concave engagement portion 411c of the portion 411 placed on the concrete slab floor. Become.

  As shown in (10-A) and (10-B) of FIG. 10, the separated rising portion 431 is an engagement portion of the portion 411 placed on the concrete slab floor in the raised state. The engaging portions 411a to 411e of the portion 411 that are combined with each other from above and placed on the concrete slab floor are engaged with the engaging portions 431a to 431e of the rising portion 431 to engage with each other. The convex engaging portions 431a, 431c, and 431e of the rising portion 431 are inserted downward and engaged with the concave engaging portions 411a, 411c, and 411e of the portion 411 placed on the concrete slab floor. On the other hand, the concave engaging portions 431b and 431d of the rising portion 431 are engaged downwardly and engaged with the convex engaging portions 411b and 411d of the portion 411 placed on the concrete slab floor. .

  The base sides 431b1 and 431d1 of the concave engaging portions 431b and 431d of the rising portion 431 are wider than the base sides 411b1 and 411d1 of the convex engaging portions 411b and 411d of the portion 411 placed on the concrete slab floor. Therefore, the compression of the convex engaging portions 411b and 411d of the portion 411 placed on the concrete slab floor becomes large, and the concave engaging portions 431b and 431d of the rising portion 431 and the concrete are compressed. Engagement with the convex engaging portions 411b and 411d of the portion 410 placed on the slab floor becomes strong and dense. Further, the base side 431c1 of the convex engagement portion 431c of the rising portion 431 is wider than the base side 411c1 of the concave engagement portion 411c of the portion 411 placed on the concrete slab floor. The compression of the convex engagement portion 431c of the rising portion 431 becomes large, and the convex engagement portion 431c of the rising portion 431 and the concave engagement portion 411c of the portion 411 placed on the concrete slab floor, The engagement becomes strong and dense.

  Furthermore, each side part of the engaging part 411a, 411b, 411c, 411d, 411e, 431a, 431b, 431c, 431e formed in the standing part 411 and the standing part 431 is stepped. Since it is set to S, the part 411 mounted on the concrete slab floor and the rising part 431 are more reliably performed with stable engagement between the engaging parts.

  As a result, on the upper surface side of the portion 411 placed on the concrete slab floor, the engaging portion of the rising portion 431 and the engaging portion of the portion 411 placed on the concrete slab floor are closely engaged. In addition, the rising portion 431 can be more reliably held, and the concrete to be placed thereafter is formed on the engaging portion of the rising portion 431 and the portion 411 placed on the concrete slab floor. It is possible to more reliably prevent leakage from the engaging portion.

  FIG.11 and FIG.12 shows the buffer body 60 for floating floors of 4th Embodiment. In the floating floor cushion 60 of the fourth embodiment, a notch 69 is formed on the back surface 61B of the rectangular plate-like body 61 made of foam, and a concrete slab is formed at the position of the notch 69 as shown in FIG. It can be used by being separated into a portion 71 placed on the floor and a rising portion 73 with respect to the wall surface of the concrete slab floor periphery. The notches 69 are perforated as described in the first embodiment. In the fourth embodiment, the incision 69 is formed in a straight line having no irregularities with respect to the one end 65 of the plate-like body 61, and the portion 71 placed on the concrete slab floor formed by separation and the concrete slab It differs from the floating floor buffer 10 of the first embodiment in that the rising portion 73 with respect to the wall surface of the floor periphery does not have an engaging portion in the portions 69a and 69b cut by the slits 69. Other configurations are the same. The rising portion 73 has a substantially rectangular plate shape. Reference numeral 64 denotes a through-hole for inserting a vibration-proof elastic body made of high-density polyurethane foam or rubber having higher rigidity than the floating floor cushion, and reference numeral 70 denotes the plate-like body 61 at the position of the notch 69. This is the uncut portion left on the surface 61A side.

  When the floating floor is constructed, the necessary number of floating floor cushions 60 is transported to the construction site. As shown in FIG. 13, the floating-floor buffer 60a transported to the construction site is partially cut away to form the rising portion, and the floating-floor buffer 60a is formed with a knife or the like at the construction site. It cut | disconnects and isolate | separates into the part 71 mounted on a concrete slab floor, and the standing part 73 with respect to the wall surface of a concrete slab floor periphery. Then, as shown in FIG. 14, the rising portion 73 is raised and brought into contact with the edge of the portion 71 placed on the concrete slab floor, and as shown in FIG. The rising portion 73 is brought into contact with the wall surface 83, and the portion 71 placed on the concrete slab floor 81 is placed on the concrete slab floor 81. Further, with respect to the floating buffer 60b disposed on the inner side of the portion 71 placed on the concrete slab floor, the entire back surface of the floating buffer 60b is faced down without being separated by the notch 69. In this way, it is placed and spread on the concrete slab floor 81. In the through hole 64 of the floating floor cushion, a vibration-proof elastic body 75 made of high-density polyurethane foam, rubber or the like having higher rigidity than that of the floating floor cushion is provided before the floating floor cushion is arranged or on the floating floor cushion. Insert after placement. Thereafter, concrete 87 is placed on the portion 71 placed on the concrete slab floor of the floating floor cushion 60a and the floating floor cushion 60b. In addition, a plastic film such as a polyethylene film may be laid on the concrete slab floor 81 before the floating floor cushions 60a and 60b are arranged.

  Even in the floating floor cushion 60 of the fourth embodiment, when transporting and storing to a construction site or the like, a required number of layers can be stacked in a flat state before being cut off by the cuts 69, The plurality of floating floor cushions 60 can be transported or stored without being bulky, and the transportation cost and storage cost can be reduced. In addition, the notch 69 is formed by alternately forming a deeply cut portion and a shallowly cut portion, or alternately forming a cut portion and a non-cut portion. Since a decrease in strength can be suppressed at the cut portion or the non-cut portion, even when a load is applied in the vicinity of the cut 69 in the floating floor buffer 60b when the concrete 87 is placed, the cut is shallow. It can be supported by the portion or the non-cut portion, and it can be prevented from being bent or broken locally at the cut position. Further, in the floating floor cushion 60b, the notch 69 is formed on the back surface and does not penetrate to the front surface. Therefore, the concrete 87 placed on the floating floor cushion is the floating floor cushion 60b. There is no risk of leaking downward through the notch 69, and the construction can be performed satisfactorily.

  As described above, the floating floor cushion according to the present invention does not require a separate rising portion, facilitates product number management, inventory management, and the like, and can reduce the management cost. Therefore, stable construction quality can be obtained. Furthermore, since it can be piled up in flat form at the time of transportation or storage to a construction site or the like, it is not bulky and does not take up space, thereby reducing transportation costs and storage costs.

  In addition, since the notch formed on the back surface of the plate-like body does not penetrate to the surface, at the time of construction of the floating floor, in the part of the floating floor buffer placed on the concrete slab floor without separating at the cutting position, There is no possibility that the concrete cast on the floating floor cushion will leak downward through the notch of the floating floor cushion, and the construction can be performed satisfactorily. Further, a perforated cut in which deeply cut portions and shallow cut portions are alternately formed, or cut portions and uncut portions are alternately formed. Thus, when a load is applied to the floating floor buffer, it is possible to prevent the local bending or breaking at the cutting position. In addition, if the perforations are formed by alternately forming deeply cut portions and shallowly cut portions, a blade such as a cutter is applied to a cut surface that has a certain amount of depth but is cut in a certain amount. Therefore, a ruler or the like is not necessary, and it is suitable for on-site work. In addition, by forming the incision into an uneven shape in which the convex part and the concave part are adjacent to each other in the length direction of the incision, the part placed on the concrete slab floor separated by the incision, and the concrete slab floor Engaging parts that engage each other can be formed on the rising part with respect to the peripheral wall surface, and the rising part may fall down by engaging each other engaging part and placing it on the slab floor and wall surface during construction. , Can be prevented from shifting, and construction work can be performed efficiently.

10, 60, 100, 101 Floating floor buffer 11, 61, 110, 111 Plate-like body 19, 69, 190, 191 Cut 41, 71, 410, 411 Parts 41a-41e, 410a- 410e, 411a-411e Engagement parts 43, 73, 430, 431 formed on the part to be placed on the slab floor 43a-43e, 430a-430e, 431a-431e Engagement parts formed on the rise part

Claims (5)

In the floating floor cushion placed on the concrete slab floor,
It consists of a plate of foam,
The plate-like body has a configuration in which a notch for separating a predetermined width portion from one end is formed on the back surface of the plate-like body without penetrating to the surface of the plate-like body,
When not cutting at the cutting position, the entire cushion for floating floor is placed on a concrete slab floor,
On the other hand, when separated at the cutting position, one of the separated parts is used as a part to be placed on the concrete slab floor, and the other separated part is a wall surface of the periphery of the concrete slab floor. A buffer for floating floors, characterized in that it is used as a rising part against the floor.   The notch is characterized in that deeply cut portions and shallowly cut portions are alternately formed, or cut portions and uncut portions are alternately formed. The floating floor cushion according to claim 1.   The notch is formed of a concavo-convex shape in which a convex part protruding from one end of the plate-like body and a depressed concave part are adjacent to each other in the length direction of the notch, and when the notch is separated by the notch, The portion placed on the concrete slab floor and the rising portion with respect to the peripheral wall surface of the concrete slab floor constitute an engaging portion in which the portions cut by the concave and convex cuts are engaged with each other. The floating floor cushion according to claim 1 or 2.   The concavo-convex cut is formed such that the convex portion is narrowed toward one end of the plate-like body, and the concave portion is widened toward one end of the plate-like body. The buffer for floating floor according to claim 3, wherein   The concavo-convex incision is such that the convex part and the side part of the concave part are formed stepwise, and the width of the convex part is gradually reduced toward one end of the plate-like body. 5. The floating floor cushion according to claim 4, wherein a width of the concave portion is gradually increased toward one end of the plate-like body.

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