JP2019010438A - Cushion body and production method of the same - Google Patents

Abstract

To provide a cushion body in which a core material can be easily attached and detached, and a production method thereof.SOLUTION: A cushion body 10 of the invention comprises: elastic sheets 11; and plural core materials 21 harder than the elastic sheet 11. The pair of elastic sheets 11 are provided to hold plural core materials 21 in a thickness direction thereof, and each of the pair of elastic sheets 11, 11 has plural storage parts 15 each of which is opened at a position corresponding to the core material 21 on a facing surface 11M and receives a part of the core material 21. For producing the cushion body 10, the core materials 21 are received in plural storage parts 15 on one elastic sheet 11 and the other elastic sheet 11 is laminated to the one elastic sheet 11 so as to sandwich the core materials 21.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a cushion body including an elastic sheet and a core material harder than the elastic sheet, and a manufacturing method thereof.

  In the cushion body disclosed in Patent Document 1, a core material larger than the holes is inserted into the plurality of holes formed in the elastic sheet.

No. Sho 63-9302 (page 1, right column, line 15 to page 2, left column, line 5, line 3)

  In the cushion body of patent document 1 mentioned above, there was a problem that it took time and effort to attach and detach the core material.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a cushion body and a manufacturing method thereof in which the core material can be easily attached and detached.

  Invention of Claim 1 made | formed in order to achieve the said objective is a cushion body provided with an elastic sheet and several core material harder than the said elastic sheet, Comprising: The said elastic sheet is the said thickness direction, and said A pair of the elastic sheets are provided so as to sandwich the plurality of core materials, and each of the pair of elastic sheets is opened at a position corresponding to the plurality of core materials among the opposing surfaces of each of the pair of elastic sheets. It is the cushion body provided with the some accommodating part which accommodates.

  According to a second aspect of the present invention, in the cushion body according to the first aspect, the core member protrudes outward from the opening of the housing portion when no load is applied to the cushion body. It is a cushion body provided with a gap forming portion for forming a gap between sheets.

  The invention of claim 3 is the cushion body according to claim 2, wherein the thickness of the core material is equal to or greater than the total thickness of the pair of elastic sheets.

  According to a fourth aspect of the present invention, in the cushion body according to any one of the first to third aspects, the pair of elastic sheets includes a first elastic sheet and a second softer sheet than the first elastic sheet. And an elastic sheet.

  The invention according to claim 5 is the cushion body according to any one of claims 1 to 4, wherein the core member is provided with a plurality of types having different hardnesses.

  A sixth aspect of the present invention is the cushion body according to any one of the first to fifth aspects, wherein the pair of elastic sheets and the core material are made of polyurethane foam.

  The invention according to claim 7 is the method for manufacturing a cushion body according to any one of claims 1 to 6, wherein the plurality of accommodating portions in one elastic sheet of the pair of elastic sheets. And receiving the core material, and stacking the other elastic sheet on the one elastic sheet so as to sandwich the core material.

  The invention according to claim 8 is the cushion body manufacturing method according to claim 7, wherein a plurality of types of the core materials having different hardnesses are prepared for each of the plurality of accommodating portions formed on the elastic sheet. It is a manufacturing method of a cushion body which is configured to receive one core material selected from a plurality of types of the core materials in each of the plurality of accommodating portions.

  The invention according to claim 9 is the method for manufacturing the cushion body according to claim 4, wherein a plurality of types of the second elastic sheets having different hardness are prepared, and the cushion body is manufactured from the plurality of types of the second elastic sheets. The second elastic sheet is selected, the core material is received in each of the plurality of accommodating portions in one elastic sheet of the one second elastic sheet and the first elastic sheet, and the core material is sandwiched therebetween And the other elastic sheet is overlaid on the one elastic sheet.

[Inventions of Claims 1 and 7]
In the cushion body according to the present invention, the elastic sheets are provided in pairs so as to sandwich the plurality of core materials, and each of the pair of elastic sheets corresponds to the plurality of core materials among the opposing surfaces. There are provided a plurality of accommodating portions that are opened at positions to accommodate a part of the core material. Accordingly, the core material can be easily attached by receiving a part of the core material in the plurality of receiving portions of the one elastic sheet and overlapping the other elastic sheet on the one elastic sheet so as to sandwich the core material. It becomes possible. Moreover, when removing a core material, it becomes possible to take out a core material easily by isolate | separating a pair of elastic sheet. Thus, according to the present invention, the core material can be easily attached and detached.

[Invention of claim 2]
In the present invention, since the gap is formed between the pair of elastic sheets by the gap forming portion of the core material, the air permeability of the cushion body can be improved.

[Invention of claim 3]
In the present invention, when the cushion body receives a load in the thickness direction of the elastic sheet and the interval between the pair of elastic sheets is narrowed, the load is received by the core material. That is, according to the present invention, the load applied to the cushion body can be first received by the elastic sheet and then received by the core material.

[Invention of claim 4]
According to the present invention, a stable support of the cushion body can be achieved by placing the first elastic sheet on, for example, a floor or a support base.

[Invention of claim 5]
According to the present invention, since the hardness of the plurality of core materials is not uniform, it is possible to form hardness variations in the cushion body.

[Invention of claim 6]
According to the present invention, disposal of the pair of elastic sheets and the core material is facilitated.

[Invention of Claim 8]
In the cushion body manufacturing method according to the present invention, each of the plurality of accommodating portions receives one core material selected from a plurality of types of core materials having different hardnesses, and thus the hardness of the plurality of core materials. It is possible to make the distribution of the desired distribution.

[Invention of claim 9]
In the method for manufacturing a cushion body according to the present invention, the same effect as in the seventh aspect can be obtained. Furthermore, since the plurality of core members are sandwiched between the second elastic sheet and the first elastic sheet selected from a plurality of types of second elastic sheets having different hardnesses, the hardness of the second elastic sheet in the cushion body is desired. It becomes possible to make it hard.

The perspective view of the cushion body concerning one embodiment of the present invention. Side sectional view of cushion body Side cross-sectional view of the cushion body when subjected to a load Side cross-sectional view of the cushion body when subjected to a load Side sectional view showing manufacturing process of cushion body Side cross-sectional view of mattress using cushion body Flat cross section of mattress Plan sectional view showing another example of mattress Side sectional view of a cushion body according to another embodiment Side sectional view of a cushion body according to another embodiment

  As shown in FIG. 1, the cushion body 10 according to this embodiment includes an elastic sheet 11 and a plurality of core members 21. The cushion body 10 has a flat shape, and the elastic sheets 11 are provided in pairs in the thickness direction of the cushion body 10. The plurality of core members 21 are sandwiched between a pair of elastic sheets 11 and 11. In the present embodiment, the elastic sheet 11 is formed in a substantially rectangular shape in plan view, and the core material 21 is formed in a spherical shape. The thickness of the core material 21 (that is, the diameter of the core material 21) is equal to or greater than the total thickness of the pair of elastic sheets 11, 11. The elastic sheet 11 has a thickness of 35 mm, for example, and the core material 21 has a thickness of 70 mm, for example.

The pair of elastic sheets 11 and 11 and the core material 21 are both made of polyurethane foam. Specifically, the pair of elastic sheets 11 and 11 are both made of a soft polyurethane foam, and the core material 21 is made of a polyurethane foam that is harder than the elastic sheet 11. The density of the elastic sheet 11 is 20 to 40 kg / m ³ and the hardness is 80 to 300N. The density of the core material 21 is 25 to 75 kg / m ³ and the hardness is 155 to 400N. In addition, the hardness of the elastic sheet 11 and the core material 21 is based on the hardness test method at the time of 25% compression (D method) with the press plate of a flat disk with a diameter of 200 mm according to JIS K6400-2: 2012. It is.

  In the cushion body 10 of this embodiment, one elastic sheet 11A (hereinafter referred to as “first elastic sheet 11A”) of the pair of elastic sheets 11 and 11 is referred to as the other elastic sheet 11B (hereinafter referred to as “second elasticity”). Sheet 11B "). Specifically, the hardness of the first elastic sheet 11A is 150 to 300N, and the hardness of the second elastic sheet 11B is 80 to 200N.

  As shown in FIG. 2, each of the pair of elastic sheets 11, 11 is formed with a plurality of accommodating portions 15 that open at the opposing surfaces 11 </ b> M. The number of the plurality of accommodating portions 15 is the same as the number of the plurality of core materials 21, and a part of the core material 21 is received in each of the plurality of accommodating portions 15 in each elastic sheet 11. In other words, both end portions of the core material 21 in the thickness direction of the cushion body 10 are received by the pair of accommodating portions 15, 15 of the pair of elastic sheets 11, 11. In the example of the present embodiment, the accommodating portion 15 is configured by a through hole 16 that penetrates the elastic sheet 11.

  As shown in FIG. 2, the outer diameter of the core material 21 is larger than the diameter of the opening 15 </ b> A of the accommodating portion 15 in the facing surface 11 </ b> M of the elastic sheet 11. Therefore, in a state where the cushion body 10 is not receiving a load in the thickness direction, the core material 21 protrudes outside the opening 15 </ b> A of the housing portion 15 to form a gap 12 between the pair of elastic sheets 11 and 11. . When the cushion body 10 is placed horizontally, the gap 12 is formed between the elastic sheets 11 and 11 so as to spread in the horizontal direction. That is, a portion of the core material 21 that protrudes outside the opening 15 </ b> A serves as a gap forming portion 22 that forms the gap 12.

  The cushion body 10 of this embodiment includes a plurality of types of core materials 21 having different hardnesses. In the example of FIG. 2, as the core material 21, a first core material 21A and a second core material 21B that is softer than the first core material 21A are shown. Thereby, the hardness of the plurality of core materials 21 is not uniform, and it is possible to form a variation in hardness in the cushion body 10.

  2 to 4 show a state where the cushion body 10 receives a load from a receiving object such as a body in the thickness direction. In the cushion body 10, the softer second elastic sheet 11 </ b> B of the pair of elastic sheets 11, 11 is disposed on the cushion body 10 on the side receiving the load, and the harder first elastic sheet 11 </ b> A is, for example, a support base Supported by the floor. As shown in the change from FIG. 2 to FIG. 3, when the cushion body 10 receives a load in the thickness direction, the load is applied to the second elastic sheet 11 </ b> B, and the load is received from the second elastic sheet 11 </ b> B. The portion is elastically deformed so as to approach the first elastic sheet 11A. Here, since the core material 21 is harder than the second elastic sheet 11B, the second elastic sheet 11B is pressed and deformed by the core material 21, and the opening 15A of the accommodating portion 15 of the second elastic sheet 11B is formed. It is spread by the core material 21.

  When the cushion body 10 further receives a load from the state shown in FIG. 3, as shown in the change from FIG. 3 to FIG. 4, the entire core member 21 and the accommodating portion 15 of the first elastic sheet 11A and the second elasticity It is accommodated in the accommodating portion 15 of the sheet 11 </ b> B, and the load from the receiving object is also received by the core material 21. Thus, in the cushion body 10 of the present embodiment, the load from the receiving object is first received by the second elastic sheet 11 </ b> B and then received by the core material 21.

  To manufacture the cushion body 10, first, the first elastic sheet 11A is prepared. Next, as shown in FIG. 5A, the core material 21 is placed on all the accommodating portions 15 (through holes 16) of the first elastic sheet 11 </ b> A, and a part of the core material 21 is placed in the accommodating portion 15. Accept. At this time, as the plurality of core materials 21, the first core materials 21 </ b> A and the second core materials 21 </ b> B having different hardnesses are prepared for each of the accommodating portions 15. And each accommodating part 15 is made to receive one core material 21 among 21 A of 1st core materials, and the 2nd core material 21B. By doing in this way, it becomes possible to make distribution of hardness in a plurality of core materials 21 into a desired distribution.

  Next, as illustrated in FIG. 5B, the second elastic sheet 11 </ b> B is overlaid on the first elastic sheet 11 </ b> A so as to sandwich the plurality of core materials 21. At this time, a plurality of types of second elastic sheets 11B having different hardnesses are prepared, and one second selection sheet 11B selected from the plurality of types of second elastic sheets 11B is stacked on the first elastic sheet 11A. Also good. If it does in this way, it will become possible to change arbitrarily the hardness of the 2nd elastic sheet 11B, and it will become possible to make the hardness of the 2nd elastic sheet 11B in the cushion body 10 into desired hardness.

  As shown in FIG. 5C, when the second elastic sheet 11B is overlaid on the first elastic sheet 11A, the plurality of accommodating portions 15 of the second elastic sheet 11B become the plurality of accommodating portions 15 of the first elastic sheet 11A. A part of the core material 21 is received in the accommodating portions 15 of the first elastic sheet 11A and the second elastic sheet 11B. Thus, the cushion body 10 is completed.

  The mattress 50 using the cushion body 10 is shown by FIGS. The mattress 50 includes a plurality of cushion bodies 10 arranged without gaps. In the example of FIGS. 6-7, the three cushion bodies 10 are arranged side by side in the short side direction. Then, the head and shoulders of the person are received by the cushion body 10 arranged on one end side in the arrangement direction of the cushion bodies 10, the waist and the buttocks are received by the cushion body 10 arranged in the center, and are arranged on the other end side. The leg portion is received by the cushion body 10 (see FIG. 6).

  As shown in FIG. 7, in the mattress 50, the arrangement of the first core material 21 </ b> A and the second core material 21 </ b> B provided in the plurality of cushion bodies 10 is symmetric with respect to the longitudinal center line L <b> 1 of the mattress 50. ing. In other words, the arrangement of the first core material 21 </ b> A and the second core material 21 </ b> B is symmetric in the arrangement direction of the cushion bodies 10.

  Specifically, the mattress 50 is configured by arranging the three cushion bodies 10 so as to be adjacent to each other in the short side direction. In each cushion body 10, the core materials 21 are arranged in a matrix of 11 rows in the longitudinal direction of the cushion body 10 and 7 columns in the lateral direction. And in the cushion body 10 arrange | positioned on the left side in FIG. 7, the core material 21 distribute | arranged to the 1st-3rd row and the 7th row from the left is comprised by 21 A of 1st core materials, and the 4th-6th row from the left The core material 21 disposed on the second core material 21B is composed of the second core material 21B. In the cushion body 10 arranged in the center in FIG. 7, the core material 21 arranged in the first and seventh rows from the left is composed of the first core material 21A, and arranged in the second to sixth rows from the left. The core material 21 is composed of the second core material 21B. In the cushion body 10 arranged on the right side in FIG. 7, the core material 21 arranged in the first row and the fifth to seventh rows from the left is composed of the first core material 21A, and in the second to fourth rows from the left. The arranged core material 21 is composed of the second core material 21B.

  As described above, in the mattress 50, the plurality of types of core materials 21 are arranged so as to be symmetrical with respect to the center line L1 (see FIG. 7) in the longitudinal direction of the mattress 50. It is also possible to invert and use. When the mattress 50 shown in FIG. 6 is inverted, the leg is received by the cushion body 10 that was arranged on the left side before the inversion (receiving the head and shoulders), and is arranged on the right side before the inversion. The head and shoulders are received by the cushion body 10 (which has received the legs).

  In the mattress 50, the arrangement of the first core material 21 </ b> A and the second core material 21 </ b> B provided in the plurality of cushion bodies 10 is symmetric with respect to the center line L <b> 2 in the short direction of the mattress 50. The balance between the left and right rolls is good.

  FIG. 8 shows another example of the mattress 50 using the cushion body 10. In the mattress 50 shown in FIG. 8, the core material 21 close to the outer periphery of the mattress 50 is composed of the first core material 21 </ b> A. Thereby, the sinking of the mattress 50 when a person sits at the end of the mattress 50 is suppressed. 8 is that the arrangement of the first core material 21A and the second core material 21B provided in the plurality of cushion bodies 10 is asymmetric with respect to the center line L1 of the mattress 50. Different from the mattress 50.

  Even in this case, in the mattress 50, the arrangement of the first core material 21A and the second core material 21B provided in the plurality of cushion bodies 10 is symmetric with respect to the center line L2 in the short direction of the mattress 50. And when turning over, the balance of turning right and left is good.

  The description about the structure and manufacturing method of the cushion body 10 is above. Next, the effect of the cushion body 10 and its manufacturing method will be described.

  In the cushion body 10 of the present embodiment, the elastic sheet 11 is provided in pairs so as to sandwich the plurality of core members 21, and each of the pair of elastic sheets 11, 11 has the opposing surface 11 </ b> M. Among them, a plurality of accommodating portions 15 that are opened at positions corresponding to the plurality of core materials 21 and accommodate a part of the core material 21 are provided. Accordingly, a part of the core material 21 is received in each of the plurality of accommodating portions 15 of the one elastic sheet 11 (the first elastic sheet 11A in FIG. 5), and the other elastic sheet 11 ( In FIG. 5, the core material 21 can be easily attached by overlapping the second elastic sheet 11 </ b> B) on the one elastic sheet 11. Moreover, when removing the core material 21, the core material 21 can be easily taken out by separating the pair of elastic sheets 11, 11. Thus, according to the present invention, the core material 21 can be easily attached and detached.

  Further, in the cushion body 10 of the present embodiment, the gap 12 is formed between the pair of elastic sheets 11 and 11 by the gap forming portion 22 of the core material 21 so as to expand in the horizontal direction. Is improved. Moreover, since the thickness of the core material 21 is equal to or greater than the total thickness of the pair of elastic sheets 11, 11, the cushion body 10 receives a load in the thickness direction of the elastic sheet 11 and the pair of elastic sheets 11, 11 When the distance 11 is reduced, the load is received by the core material 21. That is, the load applied to the cushion body 10 in the thickness direction can be initially received by the elastic sheet 11 (specifically, the first elastic sheet 11A) and then received by the core material 21.

  Moreover, in the cushion body 10 of this embodiment, since the pair of elastic sheets 11 and 11 and the core material 21 are made of polyurethane foam, the disposal of the cushion body 10 becomes easy.

  It can also be set as the cushion body of the structure by which the core material 21 is not received by some of the some accommodating parts 15 opened to the pair of elastic sheets 11 and 11 by mutual opposing surface 11M. In this case, since the gap 12 formed so as to expand in the horizontal direction is connected to the vertical and vertical directions of the mattress 50 through the accommodating portion 15 that does not have the core material 21, the air flow is improved and the air permeability is improved. Can bring. In this case, the accommodating portion 15 in which the core material 21 is received corresponds to the “accommodating portion” according to the present invention. In the present embodiment, the number of the plurality of accommodating portions 15 is the same as the number of the plurality of core materials 21, and the core materials 21 are received in all the accommodating portions 15. The support of the sheet 11 is stabilized.

[Other Embodiments]
The present invention is not limited to the above-described embodiment. For example, the embodiments described below are also included in the technical scope of the present invention, and various modifications are possible within the scope of the invention other than the following. It can be changed and implemented.

  (1) As shown in FIG. 9, the cushion body 10 may include a surface layer sheet 18 stacked on the first elastic sheet 11 </ b> A. The surface layer sheet 18 preferably has elasticity.

  (2) In the above-described embodiment, the accommodating portion 15 may be configured by a recessed portion that is recessed and formed in the facing surface 11 </ b> M of the elastic sheet 11.

  (3) In the above embodiment, the pair of elastic sheets 11, 11 may have the same hardness. In this case, the cushion body 10 can receive the receiving object on both the front and back sides.

  (4) In the said embodiment, the hardness of the several core material 21 may be the same. That is, the cushion body 10 may be configured to include only one type of core material 21.

  (5) In the above embodiment, the core material 21 may have a block shape (for example, a rectangular parallelepiped shape or a cubic shape), a column shape (for example, a columnar shape or a prismatic shape), It may be a regular polyhedron (for example, a regular tetrahedron or a regular octahedron). In addition, if the core material 21 is spherical as in the above embodiment, the user is less likely to be injured and safe.

  (6) As shown in FIG. 10, a flange portion 23 that protrudes laterally is provided at an intermediate portion of the core material 21 in the thickness direction of the cushion body 10, and between the pair of elastic sheets 11, 11. The gap 12 may be formed. In this case, the flange portion 23 constitutes the gap forming portion 22.

  (7) In the above embodiment, the thickness of the core material 21 may be less than the total thickness of the pair of elastic sheets 11 and 11. Even in this case, when the cushion body 10 receives a load in the thickness direction, the core material 21 can receive the load by compressing the first elastic sheet 11A.

  (8) In the said embodiment, the shape or magnitude | size of 21 A of 1st core materials and the 2nd core materials 21B may mutually be the same, and may differ.

  (9) In the method of manufacturing the cushion body 10 according to the above embodiment, when the core material 21 is placed on the accommodation portion 15 of the first elastic sheet 11A, the core material 21 is temporarily bonded to the opening edge of the opening 15A of the accommodation portion 15. May be.

  (10) The cushion body 10 may be applied to a seat portion such as a sofa or a chair or a backrest portion.

  (11) In the above embodiment, the plurality of second elastic sheets 11B of the plurality of cushion bodies 10 provided in the mattress 50 may all have the same hardness or may be different from each other. Specifically, in FIG. 6, the hardness of only the second elastic sheet 11B of the cushion body 10 disposed in the center of the mattress 50 is equal to the hardness of the second elastic sheet 11B of the cushion body 10 disposed on the left and right. May be different. In this case, since the hardness of the second elastic sheet 11B is symmetrical with respect to the center line L1 (see FIG. 7) in the longitudinal direction of the mattress 50, the mattress 50 can be used by being inverted in the longitudinal direction. It becomes.

DESCRIPTION OF SYMBOLS 10 Cushion body 11 Elastic sheet 12 Crevice 15 Storage part 21 Core material 22 Gap formation part

Claims (9)

A cushion body comprising an elastic sheet and a plurality of core materials harder than the elastic sheet,
The elastic sheet is provided in pairs so as to sandwich the plurality of core materials in the thickness direction thereof,
Each of a pair of said elastic sheet is a cushion body provided with the some accommodating part which opens in the position corresponding to these core materials among the mutually opposing surfaces, and accommodates a part of said core material. The cushion body according to claim 1,
The core member is provided with a gap forming portion that protrudes outward from the opening of the housing portion and forms a gap between the pair of elastic sheets when no load is applied to the cushion body. body. The cushion body according to claim 2,
A cushion body in which the thickness of the core material is equal to or greater than the total thickness of the pair of elastic sheets. In the cushion body according to any one of claims 1 to 3,
The pair of elastic sheets includes a first elastic sheet and a second elastic sheet that is softer than the first elastic sheet. In the cushion body according to any one of claims 1 to 4,
A cushion body in which a plurality of types having different hardness are provided on the core material. In the cushion body according to any one of claims 1 to 5,
The cushion body in which the pair of elastic sheets and the core material are made of polyurethane foam. A method of manufacturing a cushion body according to any one of claims 1 to 6,
A cushion body configured such that the core material is received in the plurality of accommodating portions in one elastic sheet of the pair of elastic sheets, and the other elastic sheet is stacked on the one elastic sheet so as to sandwich the core material. Manufacturing method. In the manufacturing method of the cushion object according to claim 7,
A plurality of types of the core materials having different hardnesses are prepared for each of the plurality of accommodating portions formed on the elastic sheet,
A method for manufacturing a cushion body, wherein each of the plurality of receiving portions receives and configures one core material selected from a plurality of types of core materials. It is a manufacturing method of the cushion object according to claim 4,
Prepare a plurality of types of the second elastic sheets having different hardness,
A second elastic sheet is selected from the plurality of types of second elastic sheets;
The core material is received in each of the plurality of accommodating portions in one elastic sheet of the one second elastic sheet and the first elastic sheet, and the other elastic sheet is inserted into the one elastic sheet so as to sandwich the core material. A method for manufacturing a cushion body configured to overlap an elastic sheet.

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