JP2019056212A - Impact absorption floor material - Google Patents

Abstract

To provide an impact absorption floor material which can be easily installed, can be laid quickly, has high shock absorbing properties, and is soft per foot.SOLUTION: An impact absorption floor material is formed by laminating a substrate made of a hard foam body, a mesh sheet made of a soft foam body, and a surface decorative sheet in this order; a recessed groove capable of being detachably fitted to a mesh frame of the mesh sheet is formed in a mesh shape on the surface of the substrate; an air gap is formed between the substrate and the surface decorative sheet in an area of the mesh hole of the mesh sheet.SELECTED DRAWING: Figure 1

Description

  The present invention mainly relates to an impact-absorbing flooring material that has excellent cushioning properties and is used in nursing / welfare facilities, medical institutions, elderly homes, and the like, and that reduces the impact during a fall.

  In nursing homes, welfare facilities, medical institutions, and homes where elderly people live, accidents such as broken bones are likely to occur. Therefore, barrier-free (arrangement of handrails, elimination of steps) for preventing falls is widely performed. Many flooring materials have also been proposed for the purpose of preventing injuries by reducing the impact caused by a fall in case of a fall.

  For example, in Patent Document 1, a decorative sheet, a first base material, a first buffer material, a second base material, and a second buffer material are laminated in order from the surface side, and the first base material and the second base material are woody materials. The first cushioning material and the second cushioning material have been proposed as a five-layer flooring made of synthetic resin foam. Further, in Patent Document 2, a makeup having a hard layer with a thickness of 5.5 mm on the surface side and a soft layer with a thickness of 6.5 mm on the floor side, and a polyolefin resin sheet as a base material on the surface of the hard layer. A three-layer flooring in which sheets are laminated has been proposed.

Japanese Patent No. 5680905 Japanese Patent No. 5942363

  The floor materials of Patent Document 1 and Patent Document 2 described above are each formed as a laminate in which a plurality of sheet materials are stacked, but each sheet material is separated by an adhesive or the like so that the sheet materials are not separated. Bonded and fixed. Therefore, when laying or manufacturing these floor materials, it is necessary to bond the sheets, which takes time and labor. Moreover, in any floor material, since a hard cushioning material is arranged on the surface side, the tread feeling may be felt hard.

  Accordingly, the present invention has been made in view of the above-described points, and the object thereof is to provide a shock-absorbing flooring material that can be installed quickly and easily, has high shock absorption, and has a soft foot. Is to provide.

  In order to solve the above-mentioned problems, the impact-absorbing floor material of the present invention comprises a substrate made of hard foam, a mesh sheet made of soft foam, and a surface decorative sheet laminated in this order. A concave groove that can be detachably fitted to the mesh frame of the sheet-like sheet is formed in a mesh shape, and a gap is formed between the substrate and the surface decorative sheet in the area of the mesh hole of the mesh-like sheet. Yes.

  The shock-absorbing flooring of the present invention is formed by laminating a substrate, a mesh sheet, and a surface decorative sheet in this order from the bottom. The substrate and the mesh sheet are arranged in a mesh pattern on the surface of the substrate. Since the mesh is formed by fitting the mesh frame of the mesh sheet into the concave groove, the assembly positioning is easy, and the lamination can be performed only by fitting the two together. In addition, the mesh hole portion of the mesh sheet is configured so that a gap is formed between the surface decorative sheet and the substrate that are overlaid, thereby reducing the impact absorbing action and the soft foot contact. can get. Specifically, since the surface decorative sheet is supported by the mesh frame portion of the mesh sheet, when the user applies a force to the floor surface, the mesh frame portion made of a soft foam and the void portion first exert the force. It acts to absorb and feels comfortable to step on. When a stronger force is applied to the floor surface, the mesh frame made of a soft foam is compressed in the vertical direction, and the force is also distributed to the substrate surface in the mesh holes. Since it is also formed to be hard, the force is dispersed throughout the substrate and the shock is absorbed. Thus, the combination structure of the mesh sheet and the substrate has a multistage and high buffering action. In addition, since the shock absorbing flooring of the present invention is configured such that a gap is formed between the surface decorative sheet and the substrate, the sound is insulated by the air layer, so that the floor impact sound can be reduced. it can. In addition, in this specification, the up-down direction means the up-down direction when the shock-absorbing flooring is installed and used on a construction floor such as a concrete slab, that is, up-down direction when the surface decorative sheet is installed on the upper side. It shall be said.

  In the shock absorbing floor material of the present invention, the thickness of the mesh sheet is substantially constant, and the thickness (T) of the mesh sheet is larger than the groove depth (D) of the concave groove of the substrate (T> D). Is preferred. By making the thickness of the mesh sheet thicker than the groove depth of the concave groove of the substrate, a gap can be easily provided between the substrate and the surface decorative sheet in the mesh hole region. Further, by appropriately adjusting the thickness of the mesh sheet, it is possible to obtain a desired impact absorption effect and sound insulation effect.

  Moreover, it is also preferable that the mesh sheet is formed by laminating different types of foam sheets, and the hardness of each layer is gradually decreased toward the surface decorative sheet side. As a result, a multistage shock absorbing action can be obtained. In addition, the hardness of the laminated foam sheet is low (soft foam) on the surface decorative sheet side, and high hardness (hard foam) on the foundation ground layer side, so that a softer tread is obtained. .

  The mesh sheet is a foam sheet having a plurality of cut lines penetrating in the thickness direction, and the cut lines are opened by pulling the foam sheet in a direction substantially perpendicular to the cut direction of the cut lines. It is also preferable that the sheet is a stretchable sheet configured to form a mesh sheet having a mesh hole and a mesh frame. By making the mesh-like sheet stretchable, it is possible to reduce the parts transfer to the construction site where the flooring is installed, so that the transportation cost can be reduced and easy to carry. Moreover, since the expansion / contraction method is as simple as pulling, the construction itself is also easy.

  It is also preferable that the substrate has a plurality of protrusions on the back surface. Thereby, since an air layer is also formed between the protrusions, the sound insulation is further improved.

ADVANTAGE OF THE INVENTION According to this invention, the impact-absorbing flooring which has the following outstanding effects can be provided.
(1) Construction work is easy and can be laid quickly. Therefore, not only new construction but also renovation construction to existing facilities can be performed easily.
(2) Since it has multistage and excellent shock absorption and feels soft when a load is applied, it can act safely on the flooring and move the body.
(3) It also has a sound insulation effect to reduce floor impact sound.

It is the (a) disassembled perspective view and (b) perspective view of the impact-absorbing floor material which concerns on this embodiment. It is the sectional view on the AA line of FIG.1 (b). It is the (a) top view and (b) BB sectional view of the board | substrate which comprises the shock-absorbing flooring which concerns on this embodiment. It is (a) top view and (b) CC sectional view taken on the line of the mesh-like sheet | seat which comprises the impact-absorbing floor material which concerns on this embodiment. It is a fragmentary end view explaining the floor base material which comprises the impact-absorbing floor material which concerns on this embodiment. It is explanatory drawing which shows roughly the use condition of the shock-absorbing floor material which concerns on this embodiment.

  As shown in FIG. 1, the shock absorbing flooring 1 according to the present embodiment is configured by laminating a substrate 2, a mesh sheet 3, and a surface decorative sheet 6 from the lower side (installation surface side). Hereinafter, an underlay structure in which the substrate 2 and the mesh sheet 3 are combined will be described as the floor base material 4.

  With reference to FIGS. 1-4, the board | substrate 2 which comprises the shock-absorbing flooring 1 concerning this embodiment is demonstrated. In the substrate 2 in the present embodiment, the concave grooves 21 are provided in a mesh shape on the surface side (upper surface side) that is a lamination surface with the mesh sheet 3. The concave groove 21 is formed so as to be detachably mated with a mesh frame 31 of the mesh sheet 3 described later, and corresponds to the shape of the mesh frame 31 of the mesh sheet 3. And when the surface other than this concave groove 21, ie, the convex part 22 enclosed by the concave groove 21, is formed flat, the concave groove 21 of the board | substrate 2 and the mesh frame 31 of a mesh-like sheet | seat are joined. Furthermore, it corresponds to the shape of the mesh hole 32 of the mesh sheet 3 so that the convex portion 22 enters the inside of the mesh hole 32 of the mesh sheet 3. Moreover, the convex part 22 is good also as a shape (frustum shape) which becomes thin toward the surface upper end of the convex part 22. FIG. The shape of the groove 21 of the substrate 2 does not have to be exactly the same as the shape of the mesh frame 31, and can be detachably fitted to the mesh frame 31 of the mesh sheet 3, and the grooves arranged in a mesh shape. As long as 21 can support the mesh frame 31 as a whole, there may be different portions.

  The concave groove 21 of the substrate 2 is formed such that at least a part of the groove wall 21a abuts the frame wall 31a of the mesh frame of the mesh sheet 3, and therefore the mesh frame 31 is a groove wall of the concave groove. 21a is supported and fixed. Therefore, the groove width 21W of the concave groove is formed to have the same width as the frame width 31W of the mesh frame. However, the entire groove width 21W of the concave groove does not have to be the same length as the frame width 31W of the corresponding part of the mesh frame, and if both can support the mesh frame 31 as a whole, There may be different parts. In the present embodiment, the groove width 21W of the concave groove 21 is approximately 6 mm, and the frame width 31W of the mesh frame is approximately 6 mm. Further, the groove depth 21D of the concave groove 21 is formed shorter than the length corresponding to the thickness 3T of the mesh sheet (the height of the mesh frame 31H). As a result, a gap 5 is formed between the surface of the convex portion 22 of the substrate 2 and the surface decorative sheet 6. The gap 5 is preferably adjusted to have a groove depth 21D of the groove 21 so that the height of the gap 5 is 5 mm to 20 mm, more preferably about 7 mm to 10 mm, from the viewpoint of buffering properties and walking ability. It is preferable to adjust so that it becomes. Although not particularly limited, in the present embodiment, the groove depth 21D of the concave groove 21 is 5 mm, and the thickness 3T of the mesh sheet is 13 mm. Therefore, the gap 5 having a height of about 8 mm is formed. .

  On the back surface of the substrate 2 according to the present embodiment, protrusions 23 projecting downward are provided in a lattice shape. When the projection 23 is grounded to the construction surface such as a concrete slab, a gap 24 is formed between the projection 23 and the construction surface, and air flows, so that condensation on the construction surface can be suppressed. Further, since an air layer is formed by the gap 24, the sound insulation is improved.

The substrate 2 is made of a hard foam and is formed of a foam harder than the mesh sheet 3. As its physical properties, it is preferable that the compressive strength (corresponding to hardness) measured in accordance with JIS K7220 “Hard foamed plastic-Determination of compression characteristics” is 5 to 40 N / cm ² , and 10 to 35 N more preferably those which are / cm ^2, it is particularly preferable in 15 to 30 N / cm ^2. Although it will not specifically limit as a raw material of the board | substrate 2 if it has the hardness mentioned above and it has cushioning properties, Specifically, foaming polyurethane or foaming polyolefin etc. are mentioned. Since it is necessary to provide the concave groove 21 as the hard foam constituting the substrate 2, a hard foam having a thickness of about 10 mm to 50 mm is preferably used. In the present embodiment, although not particularly limited, the substrate 2 is formed of a foamed polypropylene having a thickness of 18 mm and a hardness of 30 N / cm ² .

  The board | substrate 2 which has the groove | channel 21 and the convex part 22 can be easily obtained by pressing the hard foam mentioned above in the shape of a mesh pattern from the surface side by predetermined temperature and pressure. Similarly, the protrusions 23 and the gaps 24 are formed by pressing the hard foam at a predetermined temperature and pressure from the back side in a lattice pattern. In addition, the manufacturing method of the board | substrate 2 is not limited to the method mentioned above, For example, the hard foam sheet cut out in the shape of the convex part 22 is mounted so that the ditch | groove 21 may be formed on another hard foam. The substrate 2 can also be obtained by bonding and fixing.

  Next, the mesh sheet 3 will be described with reference to FIGS. The mesh sheet 3 in the present embodiment mainly includes a mesh frame 31 and a mesh hole 32 that is a hole inside the frame. The mesh frame 31 is formed so as to be detachably mated with the concave groove 21 of the substrate 2 described above, and corresponds to the shape of the concave groove 21 of the substrate 2. The mesh hole 32 is formed so that the convex portion 22 of the substrate 2 enters the hole of the mesh hole 32 when the mesh frame 31 of the mesh sheet 3 and the concave groove 21 of the substrate 2 are mated. This corresponds to the shape of the convex portion 22. The shape of the mesh frame 31 of the mesh sheet 3 does not have to be exactly the same as the shape of the recessed groove 21, and can be detachably fitted to the recessed groove 21, and the mesh frame 31 is supported by the recessed groove 21 as a whole. If so, there may be different parts. The mesh pattern may have any pattern shape, and examples thereof include a polygonal shape such as a triangle, a rectangle, a rhombus, and a hexagon, an ellipse, a circle, and an indefinite shape. In the present embodiment, as an example, a mesh pattern having a rhombus-like shape as a mesh hole 32 is used.

The mesh frame 31 of the mesh sheet 3 is formed so that at least a part of the frame wall 31a of the mesh frame abuts and fits into the groove wall 21a of the concave groove of the substrate 2, and the mesh frame 31 is concave. It is supported and fixed to the groove wall 21a of the groove. Therefore, the frame width 31W of the mesh frame is formed to have the same length as the groove width 21W of the concave groove. However, the entire frame width 31W of the mesh frame does not have to be the same length as the groove width 21W of the corresponding concave groove, and if the mesh frame 31 is supported by the concave groove 21, There may be different parts. The width of the frame width 31W of the mesh frame is 3 mm to 30 mm from the viewpoint of supporting the surface decorative sheet 6 on the upper surface portion of the mesh frame 31 and obtaining a multistage cushioning effect which is an effect of the present invention. It is preferable that the thickness is 5 mm to 15 mm. In the present embodiment, although not particularly limited, the frame width 31W of the mesh frame is formed to be approximately 6 mm, and the groove width 21W of the recessed groove 21 is formed to be approximately 6 mm. Further, the height 31H of the mesh frame is formed longer than the length corresponding to the groove depth 21D of the concave groove. Thereby, the space | gap 5 is formed between the convex part 22 of the board | substrate 2, and the surface decorative sheet 6, ie, the inside of the mesh hole 32. FIG. In this embodiment, although not particularly limited, the groove depth 21D of the concave groove 21 is 5 mm, and the mesh frame height 31H is 13 mm. Therefore, the gap 5 having a height of about 8 mm is formed in the mesh hole 32. It is formed inside. The gap 5 may be adjusted according to the hardness of the mesh sheet 3, and from the viewpoint of cushioning and walking properties, the thickness 3T of the mesh sheet (the mesh frame) It is preferable to adjust and select the height 31H), and it is more preferable to adjust the height to be about 7 mm to 10 mm. Further, mesh holes 32 may be adjusted in accordance with the hardness of the net-like sheet 3, in view of the walking of the cushioning size of the mesh holes 32 preferably adjusted to ^{3 cm} 2 to 20 cm ² approximately, 4 cm More preferably, it is about ^{2 to} 10 cm ² . The size of the rhombus-like mesh hole 32 of the present embodiment is designed to be about 6-7 cm ² .

  The mesh sheet 3 is made of a soft foam and is formed of a foam softer than the substrate 2. Specifically, the hardness measured in accordance with JIS K6400-2 “Soft Foam Material: How to Obtain Hardness and Compressive Stress-Strain Properties” (40% compression) is 0.5 to 20 kN. Those having 1 to 10 kN are more preferable, and those having 1 to 5 kN are particularly preferable. As the soft foam constituting the mesh-like sheet 3, since it is necessary to form the gap 5, a soft foam having a thickness of about 10 mm to 50 mm is preferably used as a whole. The mesh sheet 3 may have a configuration in which a plurality of foam sheets are laminated, or a configuration in which different types of foam sheets are laminated. In forming the mesh sheet 3 by laminating different types of foam sheets, it is preferable to laminate the foam sheets so that the hardness gradually decreases toward the surface decorative sheet 6 side. In the present embodiment, the mesh sheet 3 is formed by laminating and bonding two foam sheets, an upper first foam sheet 3a and a lower second foam sheet 3b. The upper first foam sheet 3a has a lower hardness than the lower second foam sheet 3b, and a soft sheet is selected, whereby a multistage cushioning action is obtained. The material of the mesh sheet 3 is not particularly limited as long as it has the above-mentioned hardness and cushioning properties. Specifically, the polyolefin sheet is foamed polyolefin such as foamed polyethylene, foamed polyurethane, and ethylene-vinyl acetate. Examples thereof include a copolymer resin foam or foamed silicone. The first foam sheet 3a and the second foam sheet 3b may be made of the same material or different materials. In the present embodiment, although not particularly limited, the mesh sheet 3 is a first foam sheet 3a, a sheet formed of an independent foam type silicone foam having a thickness of 3 mm and a hardness of 1.5 kN, and a second foam sheet 3a. As the foam sheet 3b, a sheet obtained by laminating and bonding a sheet formed of an independent foam type polyethylene foam having a thickness of 8 mm and a hardness of 2.5 kN is used.

  As shown in FIG. 4A, the mesh sheet 3 in the present embodiment is a stretchable sheet, and has a plurality of cut lines 3L penetrating in the thickness direction of the sheet, and the cut direction of the cut lines 3L When the sheet is pulled in a substantially vertical direction, the cut lines 3L are opened to form the mesh holes 32 and the mesh frame 31. Thus, by making the mesh-like sheet 3 a stretchable sheet, it is possible to make the parts transfer to the construction site compact, so that the transportation cost can be reduced and the carrying can be easily carried out because it can be carried small. Further, since the expansion / contraction method is also simple by simply pulling, the floor base material 4 is completed simply by fitting it into the concave groove 21 of the substrate 2 after being pulled and spread, and the construction itself is very easy. The mesh sheet 3 does not have to be a stretchable sheet. For example, the mesh sheet 3 may be a sheet formed by opening the mesh holes 32 by punching or the like.

  Next, the surface decorative sheet 6 will be described. The surface decorative sheet 6 in the present embodiment includes a plywood board, a wood board, a laminated board, a single board laminate, a solid board such as a solid board, a wood composite board in which a sheet-like wood board material is laminated on the wood board, and an FRP board. Any type of surface decorative sheet distributed in the market, such as a resin plate and a foamed resin plate, a resin sheet printed on the surface of these plate materials, or a laminate of a top coat can be used.

  The impact absorbing flooring 1 of the present invention may be provided with a connecting means for connecting and laying a plurality of impact absorbing flooring 1. As a connection means, if it does not inhibit the effect of this invention, the well-known connection means used with the conventional flooring material is applicable.

  The construction of the shock absorbing flooring 1 according to the present embodiment is performed by placing the substrate 2 on the construction surface and pressing the mesh frame 31 of the mesh sheet 3 into the concave groove 21 formed on the substrate 2 from above with a light force. It is carried out by fitting and superimposing the surface decorative sheet 6 thereon. Since the substrate 2 and the mesh sheet 3 are connected by the fitting of the concave groove 21 and the mesh frame 31, no bonding work with an adhesive or the like is required between the substrate 2 and the mesh sheet 3. Further, since the mesh-like sheet 3 is formed as a stretchable sheet, it is easy to handle without being bulky in a contracted state during transportation or transportation, and spreads to a predetermined shape by simply pulling one end during construction. It can be constructed efficiently.

  Next, the action of the floor base material 4 in which the substrate 2 and the mesh sheet 3 are combined will be described with reference to FIGS. 5 and 6. As shown in FIG. 5, in the floor base material 4 in which the mesh sheet 3 is fitted to the substrate 2, the mesh frame 31 of the mesh sheet 3 has a groove wall 21 a of which the frame wall 31 a is a concave groove of the substrate 2. Is supported and fixed. Further, since the mesh frame height 31H is longer than the length corresponding to the groove depth 21D of the concave groove, the mesh frame has a height between the surface of the convex portion 22 of the substrate 2 and the surface decorative sheet 6, ie, the mesh. A void 5 is formed inside the hole 32. In the present embodiment, the groove depth 21D of the concave groove 21 is 5 mm, and the mesh frame height 31H is 13 mm. Therefore, the gap 5 having a height of about 8 mm is formed inside the mesh hole 32. Yes. The lower side of the frame wall 31a of the mesh frame 31 is fitted to the concave groove 21 and supported and fixed to the groove wall 21a of the concave groove. The upper side of the frame wall 31a is the groove depth 21D of the concave groove. Is shorter than the frame height 31H of the mesh frame, it is configured as a free end 31b that is not supported by the groove wall 21a of the concave groove.

  As shown in FIG. 6, in the shock absorbing flooring 1 in which the surface decorative sheet 6 is laminated on the floor base material 4, when the user applies a force in the floor direction, the surface decorative sheet 6 is a mesh-like sheet. 3 is supported by the surface portion of the mesh frame 31, the mesh frame 31 of the mesh sheet 3 made of a soft foam absorbs the force, and the void 5 inside the mesh hole 32 is easily dented. Because it absorbs, the cushioning property is high, and the touch is soft and soft. Moreover, since the space | gap 5 between the surface decoration sheet 6 and the board | substrate 2 acts as an air layer, it has a sound-insulation effect | action and can reduce the sound transmitted through floor materials, such as a floor impact sound and a living sound. When a stronger force is applied in the direction of the floor surface, the force is also distributed to the surface of the convex portion 22 of the substrate 2 disposed below the mesh hole 32, but the substrate 2 is the mesh sheet 3. Since it is formed to be harder, the force is dispersed throughout the substrate 2. In the present embodiment, the mesh sheet 3 is formed of two foam sheets, an upper first foam sheet 3a and a lower second foam sheet 3b, and the hardness thereof is the first. Foam sheet 3a <second foam sheet 3b <base material 2 is selected in this order. In this way, the upper surface decorative sheet 6 side has a low hardness (soft foam), and as it goes down, it has a high hardness (hard foam). Cushioning according to the magnitude of the applied force is obtained, reducing the burden on the knees and waist. And since the upper surface decoration sheet 6 side is made into low hardness (soft foam), while being able to obtain soft treading comfort, the impact at the time of falling can also be reduced.

  As described above, the shock-absorbing flooring of the present invention has a multi-stage cushioning action, has a soft foot comfort, and has little burden on the knees and lower back. It is suitable as a flooring material for playgrounds and playgrounds in recreational rooms, corridors, child welfare facilities, and educational facilities.

  The present invention is not limited to the above-described embodiments, and various design changes within the scope not departing from the gist of the invention described in the claims are also included in the technical scope.

DESCRIPTION OF SYMBOLS 1 Shock absorbing floor material 2 Substrate 21 Groove 21a Groove wall 21D Groove depth 21W Groove width 22 Convex 23 Protrusion 24 Gap 3 Mesh sheet 3a First foam sheet 3b Second 3T sheet thickness 31 mesh frame 31a mesh frame frame wall 31b free end 31H mesh frame height 31W mesh frame width 32 mesh hole 3L cut line 4 floor base material 5 void 6 surface decorative sheet

Claims (5)

A substrate made of hard foam, a mesh sheet made of soft foam, and a surface decorative sheet are laminated in this order,
On the surface of the substrate, concave grooves that can be detachably fitted to the mesh frame of the mesh sheet are formed in a mesh shape,
An impact-absorbing flooring material, wherein a gap is formed between the substrate and the surface decorative sheet in a region of a mesh hole of the mesh sheet.   The thickness of the mesh sheet is substantially constant, and the thickness (T) of the mesh sheet is larger than the groove depth (D) of the concave groove of the substrate (T> D). Item 2. The shock absorbing flooring material according to Item 1.   The mesh sheet is formed by laminating different types of foam sheets, and the hardness of each layer is configured to gradually decrease toward the surface decorative sheet side. 2. The shock absorbing floor material according to 2.   The mesh sheet is a foam sheet having a plurality of incision lines penetrating in the thickness direction, and the incision lines are formed by pulling the foam sheet in a direction substantially perpendicular to the incision direction of the incision lines. The impact-absorbing floor according to any one of claims 1 to 3, wherein the impact-absorbing floor is a stretchable sheet that is configured to be open and to form a mesh sheet having a mesh hole and a mesh frame. Wood. The shock-absorbing flooring according to any one of claims 1 to 4, wherein the substrate is provided with a plurality of protrusions on the back surface thereof.

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