Mattress and mattress cover

Abstract

According to the present invention, cushions 21 to 23 include: a mattress core material 41, which is a three-dimensional bonded body comprising molten thermoplastic filaments and the entirety of which is a flat-plate-shaped rectangular body; and an inner cover 31 that accommodates the mattress core material 41. An exposed region is formed on the inner cover 31. The exposed region is a right-angled triangular-shaped notch in plan view that exposes top and bottom surfaces and a lateral surface of one corner at one location of the mattress core material 41. The mattress cover 10 includes an upper-surface cover section 11 that covers an upper part of a mattress cushion 20, and a lateral-surface cover section 12 that covers a lateral surface of the mattress cushion 20 and that is elastically tightened in a circumferential direction. The downward-facing exposed region of the inner cover 31 is open to render the mattress core material 41 visible.

Description

[Technical Field]

[0001] The present invention relates to a mattress and a mattress cover formed using a cushion body.

[0002] In this specification, the terms "vertical," "upper," "lower," etc., which indicate directions, are used to indicate the directions when the mattress is placed on a horizontal bed or the like in its usable position, and are not intended to limit the configuration of the mattress. [Background technology]

[0003] In a typical prior art (Patent Document 1), a mattress cushion, which is arranged in parallel and can be separated into multiple cushion bodies in the longitudinal direction (i.e., in the direction of the user's height), is housed in a mattress cover. This mattress cover includes an upper cover and a bottom cover that can be connected and separated by a fastener that acts as an anti-stretch member that prevents the mattress cover from stretching in the longitudinal direction. A user can lie on the upper cover. The bottom cover is formed in a cylindrical shape with a bottom into which the mattress cushion can be fitted. Each cushion body is a mattress cushion that is a three-dimensional filament bonded body. for The entire core material is housed in the inner cover. [Prior art documents] [Patent documents]

[0004] Patent Document 1: International Publication WO2018 / 150815

[0005] In this prior art, each cushion body is a mattress. for The entire core material is inner - A mattress cushion made up of a plurality of cushion bodies is housed in a cover and is attached to a cylindrical bottom cover with a bottom. to Therefore, the mattress of each cushion body can be seen from the outside. for The core material is not visible, and the mattress forYou can't check the core material by touching it with your hands. for It is not possible to know the structure and properties of the core material, such as its hardness, and it is not possible to know the distribution of hardness in the thickness direction and longitudinal direction. As a result, users are unable to select the cushion body, mattress cushion, and mattress, and it is not possible to realize a mattress that provides the user with the sleeping comfort that is most suitable. Summary of the Invention

[0006] The object of the present invention is to provide a mattress for The core material can be seen from the outside, and the mattress for To provide a mattress that allows a user to easily know the characteristics of a core material and thereby achieves a comfortable sleep for the user.

[0007] Furthermore, in the above-mentioned conventional technology, the entire mattress cushion is housed in a mattress cover that can be opened and closed with a zipper. Therefore, it is laborious to house the mattress cushion in the mattress cover and to remove and detach it. Therefore, for example, cleaning the mattress cover and mattress cushion separately is time-consuming, which is a significant burden, especially for household members.

[0008] In this prior art, the bottom cover, which can be attached to or separated from the top cover, is tubular with a bottom, into which the mattress cushion can be fitted. Therefore, if the thickness of the mattress cushion is greater than the height of the storage space in the bottom cover, the mattress cushion cannot be accommodated. Conversely, if the thickness is smaller, a space is created between the underside of the top cover and the top of the mattress cushion, causing the mattress cover to collapse and deform when the mattress is in use, resulting in an uncomfortable sleep and a poor aesthetic appearance.

[0009] Another object of the present invention is to provide a mattress cushion that can be easily inserted and removed, and that can be applied to mattress cushions of various thicknesses. mattress cover The purpose is to provide

[0010] The present invention provides a mattress cushion 20; A mattress 1 including a mattress cover 10 that accommodates a mattress cushion 20 and on which a user can lie, (a) The mattress cushion 20 is composed of a single or multiple cushion bodies 21 to 23 arranged side by side, The cushion bodies 21 to 23 are a mattress core material (41) that is flat overall and includes a three-dimensional filament bonded body in which molten thermoplastic resin filaments are bonded together in a three-dimensional net shape; and an inner cover (31) that houses a mattress core (41), The inner cover 31 is formed with exposed areas 37 that expose a portion of each of the upper and lower surfaces of the mattress core 41, (b) The mattress cover 10 is an upper surface cover portion 11 that covers the upper part of the mattress cushion 20; and a side cover portion 12 connected to the upper cover portion 11 and adapted to cover and fasten the side surface of the mattress cushion 20. The mattress cover 10 is Exposed area 37 of inner cover 31 This mattress is characterized in that the mattress core 41 is open so that it can be seen. [Effects of the Invention]

[0011] According to the present invention, a mattress is constructed by housing a mattress cushion 20 in a mattress cover 10. The mattress cushion 20 may be a plurality of cushion bodies 21 to 23 arranged side by side in the longitudinal direction, i.e., in the height direction of the user, or may be a single cushion body extending in the height direction.

[0012] The cushion bodies 21 to 23 are constructed by housing a mattress core 41, which is generally flat, in an inner cover 31. The mattress core 41 includes a three-dimensional filament bonded body in which molten thermoplastic resin filaments are bonded together in a three-dimensional net shape, and may further be laminated with, for example, a soft urethane foam layer, a nonwoven fabric, or the like.

[0013] The 3D bonded filaments are ideal for high-resilience mattresses, allowing for easy turning over in bed and excellent breathability and body pressure distribution, resulting in a soft, comfortable feel that prevents stuffiness and promotes a good night's sleep. The 3D bonded filaments also have a high porosity, allowing for quick drainage and drying even after washing, making them easy to clean.

[0014] The inner cover 31 may be mesh-like, and is preferably made of a mesh fabric woven from polyester fibers with low water absorption (high water repellency). This inner cover 31 has exposed areas 37 that expose a portion of each of the upper and lower surfaces of the mattress core 41. The inner cover 31 protects the mattress core 41 contained therein by preventing breakage of filament pieces or other damage during handling or use, and also helps to facilitate operations such as transportation.

[0015] The mattress cover 10 that houses the mattress cushion 20 has a top cover 11 that covers the top of the mattress cushion 20 and a side cover 12 that is connected to it. By covering and fastening the side surfaces of the mattress cushion 20, the side cover 12 makes it difficult for the mattress cushion 20 to come off the mattress cover 10, and in a configuration in which the mattress cushion 20 includes a plurality of cushion bodies 21-23 arranged side by side, the cushion bodies 21-23 are kept adjacent to each other without separating in the longitudinal direction. In this way, the side cover 12 is configured to cover and fasten the side surfaces of the mattress cushion 20, and the mattress cover 10 is attached to cover and house the mattress cushion 20 from above, so it can be used for mattress cushions of various thicknesses.

[0016] The mattress cover 10 is Exposed area of ​​inner cover 31 is opened so that the mattress core 41 can be seen. exposed from the exposed area 37 of the mattress 1 The mattress core 41 can be visually confirmed, and the mattress for The core material 41 can be checked by touching it with one's hand, and as a result, the mattress for It is possible to easily know the configuration of the core material 41, as well as physical properties such as hardness. This makes it possible to select and realize a mattress cushion 20 that provides a sleeping comfort that is suitable for the user. For example, the cushion bodies 21-23 of the mattress cushion 20 can be turned upside down, and the multiple juxtaposed cushion bodies 21-23 can be changed or replaced to change their combination, thereby providing a mattress that provides a sleeping comfort that is suitable for the user.

[0017] The present invention provides The side cover portion 12 is a side cover sheet 13 connected to the top cover portion 11; The mattress cushion has fastening members 14 attached to the side cover sheets 13 for fastening the sides of the mattress cushion 20 in the circumferential direction.

[0018] According to the present invention, the side cover sheet 13, for example, typically has its lower portion fastened to the mattress cushion 20, and therefore to the sides of the cushion bodies 21-23, by fastening members 14, thereby preventing the mattress cover 10 from coming off the mattress cushion 20 while the mattress 1 is in use. Furthermore, when the mattress cushion 20 is made up of a plurality of cushion bodies 21-23 arranged side by side, the adjacent cushion bodies 21-23 remain in contact with each other and do not separate, with no gaps between them, allowing for comfortable use.

[0019] The fastening member 14 may be made of, for example, a strip-shaped elastic body extending in the longitudinal direction, such as a rubber cord that has a contractile force in the circumferential direction along the side of the mattress cushion 20. Alternatively, the fastening member 14 may be configured as an inelastic strip, and for example, the elastic force of the mattress core 41 itself may be used to elastically fasten the side cover sheet 13, for example, at its lower part, in the circumferential direction to the side of the mattress core 41. Examples of materials that can be used as the inelastic strip include woven tape made of synthetic fiber.

[0020] The present invention provides The inner cover 31 is characterized in that display sections 44 and 45 are formed near the exposed area 37 on the outer surface thereof to display the characteristics of the mattress core 41 exposed from the exposed area 37 .

[0021] According to the present invention, the indicators 44, 45 displaying the characteristics of the mattress core 41 are provided near the exposed region 37 on the outer surface of the inner cover 31. This allows the surface of the mattress core 41 to be viewed from the exposed region 37, and the characteristics of the mattress core 41, and therefore the cushion bodies 21-23, to be easily known. The characteristics of the mattress core 41 may be, for example, physical characteristics such as firmness (including softness) and resilience of the mattress core 41, or a fit or quality that may be expressed as light or soft, or a sleeping comfort that indicates an evaluation of the mattress core 41 when the user lies down and sleeps on it. The indicators 44, 45 may, for example, be expressed by colors, letters, symbols, figures, or the like corresponding to the firmness. For example, the colors may be white, light gray, gray, and dark gray, in order from soft to hard, and the letters may be, for example, "1 SOFT," "2 MODERATE," "3 FIRM," and "4 EXTRA FIRM," as described below. If the mattress core 41 is made up of multiple layers with different hardness in the thickness direction, the characteristics expressed by the display units 44, 45 may also display the hardness of the layer near the surface of the mattress core 41 exposed from the exposed area 37, or may display the characteristics of each layer of the mattress core 41 in the thickness direction, or may display the sleeping comfort that represents the evaluation obtained when using the mattress core 41, or may further display other characteristics.

[0022] The present invention provides The mattress core 41 of the cushion bodies 21 to 23 is a rectangular body, and the exposed region 37 of the inner cover 31 is at least one portion of the mattress core 41. Corners It is characterized in that it is formed by a cutout having a right-angled triangular shape in a plan view, which exposes the upper and lower surfaces and side surfaces of the substrate.

[0023] According to the present invention, mattress core 41 is rectangular, i.e., a right-angled quadrilateral such as a rectangle or a square in plan view, and inner cover 31 that houses mattress core 41 has exposed areas 37 formed in at least one of its four corners by cutouts that have the shape of a right-angled triangle in plan view. Exposed areas 37 in the corners expose the top and bottom surfaces and the side surfaces of mattress core 41.

[0024] The mattress cover 10 is Exposed area 37 of inner cover 31 4. The mattress cover 10 is opened so that the mattress core 41 can be seen, and therefore, the mattress cushion 20 remains covered by the mattress cover 10, and the mattress cover 10 can be removed without removing the mattress cover 10. exposed area Therefore, the exposed area 37 exposed from It is possible to easily know the sleeping comfort of the mattress core material 41.

[0025] Mattress core 41 is exposed facing the cutout that is a right-angled triangle in plan view, so the user can, for example, pinch and press the upper and lower surfaces of mattress core 41 between the thumb and index finger to make contact. This allows the user to know the characteristics of mattress core 41, such as its hardness, and to select and obtain a suitable sleeping comfort.

[0026] The present invention provides Indication sections 44, 45 are formed along the hypotenuse of the right-angled triangular exposed area 37, and these indication sections 44, 45 are characterized by indicating the characteristics of the mattress core material 41 exposed from the exposed area 37.

[0027] According to the present invention, the display sections 44, 45 that display the characteristics of the mattress core 41 are formed along the hypotenuse of the exposed region 37 of a right-angled triangle, so that the user can visually check the exposed region 37 and at the same time understand the display contents of the display sections 44, 45. Therefore, the user can easily know the sleeping comfort and other aspects of the characteristics of the cushion bodies 21-23. Because the hypotenuse of the right-angled triangle is longer than the other two sides that sandwich the right angle, the display sections 44, 45 formed near the exposed region 37 can be made larger in area to be easier to see.

[0028] The present invention provides a mattress cushion 20; A mattress (1) including a mattress cover (10) that accommodates a mattress cushion (20) and on which a user can lie, (a) The mattress cushion 20 is composed of one or more cushion bodies 21 to 23 arranged side by side, The cushion bodies 21 to 23 are a mattress core material (41) that is flat overall and includes a three-dimensional filament bonded body in which molten thermoplastic resin filaments are bonded together in a three-dimensional net shape; and an inner cover (31) that houses a mattress core (41), The inner cover 31 is formed with exposed areas 37 that expose a portion of each of the upper and lower surfaces of the mattress core 41, (b) The mattress cover 10 is an upper surface cover portion 11 that covers the upper part of the mattress cushion 20; and a side cover portion 12 that is connected to the upper cover portion 11 and covers and fastens the mattress cushion 20 from the side to the peripheral edge of the lower surface, The mattress cover 10 is Exposed area 37 of inner cover 31 This mattress is characterized in that the mattress core 41 is open so that it can be seen.

[0029] According to the present invention, the side cover parts 12 connected to the top cover part 11 of the mattress cover 10 cover and fasten the mattress cushion 20 from the sides to the peripheral edge of the underside, which more reliably prevents the mattress cover 10 from coming off the mattress cushion 20 while the mattress 1 is in use. Furthermore, when the mattress cushion 20 is made up of a plurality of cushion bodies 21-23 arranged side by side, the adjacent cushion bodies 21-23 are more reliably kept in contact with each other and do not separate, which more reliably prevents gaps from forming between them.

[0030] The present invention provides A cushion sheet 52 is laminated between the mattress cushion 20 and the upper cover part 11 of the mattress cover 10.

[0031] According to the present invention, the cushion sheet 52, which is an elastic sheet body, is layered on the mattress cushion 20, thereby providing a more comfortable sleeping experience that meets the needs of the user.

[0032] The present invention provides A single or multiple cushion bodies 21 to 23 arranged side by side that constitute a mattress cushion 20 housed in a mattress cover 10 on which a user can lie, a mattress core material (41) that is flat overall and includes a three-dimensional filament bonded body in which molten thermoplastic resin filaments are bonded together in a three-dimensional net shape; and an inner cover (31) that houses a mattress core (41), The cushion body is characterized in that the inner cover 31 is formed with exposed regions 37 that expose a portion of each of the upper and lower surfaces of the mattress core 41 .

[0033] According to the cushion bodies 21 to 23 of the present invention, the inner cover 31 that houses the mattress core 41 has exposed regions 37 that expose a portion of each of the upper and lower surfaces of the mattress core 41. exposed fromThe mattress core 41 can be visually confirmed, and the mattress for The core material 41 can be checked by touching it with one's hand, and as a result, the mattress for The characteristics of the core material 41, for example, physical characteristics such as hardness, and configuration, can be easily known, which allows the selection and realization of a mattress cushion 20 that provides a sleeping comfort suitable for the user. For example, the cushion bodies 21 to 23 of the mattress cushion 20 can be turned upside down and inverted, and the combination of the multiple juxtaposed cushion bodies 21 to 23 can be changed or replaced, thereby providing a mattress that provides a sleeping comfort suitable for the user.

[0034] The present invention provides A mattress cover 10 that accommodates a mattress cushion 20 composed of one or more cushion bodies 21 to 23 arranged side by side and on which a user can lie, an upper surface cover portion 11 that covers the upper part of the mattress cushion 20; This mattress cover is characterized by including a side cover portion 12 that is connected to the top cover portion 11 and covers and fastens the side of the mattress cushion 20.

[0035] According to the present invention, a mattress is constructed by housing a mattress cushion 20 in a mattress cover 10. The mattress cushion 20 may be a single cushion body extending in the longitudinal direction, although multiple cushion bodies 21 to 23 may be arranged side by side in the longitudinal direction, i.e., in the height direction of the user.

[0036] The mattress cover 10 that houses the mattress cushion 20 has a top cover 11 that covers the top of the mattress cushion 20 and a side cover 12 that is connected to it. By covering and fastening the side surfaces of the mattress cushion 20, the side cover 12 makes it difficult for the mattress cover 10 to separate from the mattress cushion 20, and when the mattress cushion 20 includes a plurality of cushion bodies 21-23 arranged side by side, the cushion bodies 21-23 are kept adjacent to each other without separating in the longitudinal direction. The side cover 12 is configured to cover and fasten the side surfaces of the mattress cushion 20, and the mattress cover 10 is attached to cover and house the mattress cushion 20 from above, so it can be used with mattress cushions of various thicknesses.

[0037] The mattress cover 10 is open at the bottom, so that it can easily store the mattress cushion 20 by covering the entire mattress cushion 20, and the stored mattress cushion 20 can be easily removed and detached. This reduces the labor required to store the mattress cushion 20 in the mattress cover 10 and to remove and detach it.

[0038] The present invention provides The side cover portion 12 is a side cover sheet 13 connected to the top cover portion 11; The mattress cushion has fastening members 14 attached to the side cover sheets 13 for fastening the sides of the mattress cushion 20 in the circumferential direction.

[0039] According to the present invention, the side cover sheet 13 in the side cover portion 12 of the mattress cover 10 is typically provided with a fastening member 14 at its lower part for fastening the side of the mattress cushion 20 in the circumferential direction, making it easy to place the mattress cover 10 over the mattress cushion 20 and store it in the mattress cover 10, and also easy to remove the mattress cushion 20.

[0040] The present invention provides The side cover portion 12 is a side cover sheet 13 that is connected to the upper cover portion 11 and covers the sides and the peripheral edge of the lower surface of the mattress cushion 20; The side cover sheet 13 is provided in a portion that covers the peripheral edge of the underside of the mattress cushion 20, and is characterized by having fastening members 14 that fasten the side surfaces of the mattress cushion 20 in the circumferential direction.

[0041] According to the present invention, the side cover sheet 13 in the side cover portion 12 of the mattress cover 10 covers the mattress cushion 20 from the side to the peripheral edge of the underside, and a fastening member is provided in the portion of this side cover sheet that covers the peripheral edge of the underside of the mattress cushion 20, so that the mattress cover 10 can be easily placed over the mattress cushion 20 and stored in the mattress cover 10, and the stored mattress cushion 20 can be prevented from undesirably detaching, and the peripheral edge of the underside of the mattress cushion 20 in the side cover sheet does not cause any obstacle when removing the mattress cushion 20 from the mattress cover 10.

[0042] The present invention provides The fastening member 14 is characterized by being made of a strip-shaped elastic body that exerts a contracting force in the longitudinal direction.

[0043] The present invention provides The fastening member 14 is made of a non-stretchable band-like body and is characterized by being fastened by utilizing the elastic force of the mattress cushion 20.

[0044] According to the present invention, the tightening member 14 is strip-shaped and elongated, and may be made of an elastic or non-stretch material. In a non-stretch configuration, the elastic force of the mattress cushion 20 may be utilized to resiliently tighten the side cover sheet 13, for example, by its lower portion in the circumferential direction, against the side of the mattress cushion 20. Instead of an embodiment employing a non-stretch strip-shaped tightening member 14, the side cover sheet 13 may be designed to function as a non-stretch tightening member entirely using canvas fabric or the like. Furthermore, to enhance breathability, the side cover sheet 13 is preferably provided with multiple ventilation holes or a highly breathable mesh fabric. [Brief explanation of the drawings]

[0045] The objects, features and advantages of the present invention will become more apparent from the following description taken in conjunction with the drawings. [Figure 1] 1 is a perspective view showing a mattress 1 according to an embodiment of the present invention with a portion of a mattress cover 10 peeled off. [Figure 2] FIG. 1 is a perspective view showing the overall shape of a mattress 1. [Figure 3] FIG. 2 is a bottom view showing the mattress cover 10 in its natural state in which the cushion bodies 21 to 23 have been removed and no external force is acting thereon. [Figure 4] FIG. 1 is a perspective view of a mattress cushion 20 configured by arranging three cushion bodies 21 to 23 side by side. [Figure 5] 2 is a perspective view showing mattress cores 41 to 43 constituting cushion bodies 21 to 23, respectively, and inner covers 31 to 33 that house mattress cores 41 to 43, respectively. FIG. [Figure 6] 5 is a perspective view of the mattress cushion 20 of FIG. 4 as viewed from below. [Figure 7] 7A and 7B are diagrams showing the outer shape of the inner cover 31. Fig. 7(1) is a plan view of the inner cover 31. Fig. 7(2) is a right side view of the inner cover 31. Fig. 7(3) is a bottom view of the inner cover 31. [Figure 8] FIG. 10 is a plan view showing the state in which the characteristics of the mattress core 41 are displayed by the display unit 44. [Figure 9] 9 is a cross-sectional view taken along the cutting line IX-IX in FIG. 1, showing a state in which a mattress cushion 20 is housed in the mat cover 10 in FIG. 1 as shown in FIG. 2. FIG. [Figure 10] 2. FIG. 3 is a cross-sectional view taken along the cutting line XX in FIG. 1, showing a state in which a mattress cushion 20 is housed in the mat cover 10 as shown in FIG. [Figure 11] FIG. 10 is a cross-sectional view showing a part of another embodiment of the present invention. [Figure 12] FIG. 10 is a cross-sectional view showing a part of still another embodiment of the present invention. [Figure 13] FIG. 10 is a perspective view showing a cushion body 21 according to another embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0046] Fig. 1 is a perspective view of a mattress 1 according to one embodiment of the present invention with a portion of its mattress cover 10 peeled away, and Fig. 2 is a perspective view showing the overall shape of the mattress 1. The front-to-back X (longitudinal direction, height direction), left-to-right Y, and up-to-down Z (thickness direction) directions of the mattress 1 are as shown in Fig. 1. In Fig. 1, to facilitate understanding of the internal configuration of the mattress 1, the approximate positions of the boundaries between a plurality (for example, three) of cushion bodies 21-23 arranged adjacently are shown by imaginary lines.

[0047] Mattress 1 includes a mattress cover 10 that covers the entire outer surface of the mattress and on which a user can lie, and a mattress cushion 20 contained therein. Overall, mattress 1 has a rectangular parallelepiped shape with sides in the front-to-back X, left-to-right Y, and up-to-down Z directions, with the left-to-right Y dimension being slightly smaller than the front-to-back X dimension and the up-to-down Z dimension being sufficiently smaller than the left-to-right Y dimension. As an example, the front-to-back X dimension of mattress 1 may be 195 to 200 cm, the left-to-right Y dimension 90 to 140 cm, and the up-to-down Z dimension 11.5 cm.

[0048] Mattress cushion 20 is formed so as to be separable into cushion bodies 21 to 23. Mattress 1 is usually placed on a level floor or bed, with the user lying on the upper side. When used in this manner, the up and down Z of mattress 1 coincides with the vertical. As mentioned above, mattress 1 is set to have a relatively long front-to-back X dimension, and can be suitably used in a manner in which front-to-back X is approximately aligned with the height direction of the user.

[0049] Figure 3 is a bottom view showing the mattress cover 10 in its unfolded, natural state with no external force acting on it, with the cushion bodies 21-23 removed. The mattress cover 10 includes an upper cover portion 11 that covers the top of the mattress cushion 20, and side cover portions 12 that are continuous with the upper cover portion 11 and cover and fasten the side surfaces of the mattress cushion 20. The side cover portions 12 have side cover sheets 13 (individually indicated as 13a-13d) that are continuous with the upper cover portion 11, and fastening members 14 that are provided below the side cover sheets 13 and fasten the side surfaces of the mattress cushion 20 in the circumferential direction. Circumferentially adjacent side cover sheets 13a-13d are sewn together, as shown by the dashed lines in Figure 3.

[0050] The mattress cover 10 is open downwards (toward the viewer in FIG. 3), so the underside of the mattress cushion 20, and therefore the undersides of the cushion bodies 21 to 23 that make up the mattress cushion 20, can be seen without removing the mattress cover 10.

[0051] Fig. 4 is a perspective view of a mattress cushion 20 formed by arranging three cushion bodies 21-23 side by side, Fig. 5 is a perspective view showing mattress cores 41-43 that respectively constitute the cushion bodies 21-23 and inner covers 31-33 that house the mattress cores 41-43, and Fig. 6 is a perspective view of the mattress cushion 20 of Fig. 4 viewed from below in Fig. 4. To avoid redundancy, the following description will mainly focus on the cushion body 21, and may omit similar content for the remaining cushion bodies 22 and 23. The mattress core 41 of the cushion body 21 is an entirely flat rectangular body that has a rectangular or square right-angled quadrilateral shape in plan view, and includes a three-dimensional filament bond formed by bonding molten thermoplastic resin filaments together in a three-dimensional net shape, and may further be layered with layers of soft urethane foam, nonwoven fabric, etc.

[0052] The three-dimensional filament bonded body has, for example, a thickness of 10 to 25 cm, a filament diameter of 0.5 to 2 mm, and a bulk density of 30 to 150 kg / m 3 The thickness direction of the sheet may be such that the sheet has a smooth surface layer at both ends thereof in which the density of filaments is higher than that at the center of the thickness direction.

[0053] If the thickness of the 3D filament bond is less than 10 cm, the 3D filament bond itself will tend to twist and overlap vertically, making it difficult to transmit sufficient longitudinal crimping force. Conversely, if the thickness exceeds 25 cm, the 3D filament bond will become heavy and difficult to transport.

[0054] If the filament diameter of the three-dimensionally bound filaments is less than 0.5 mm, the surface area of ​​the filaments increases, resulting in longer drainage after rinsing and longer drying times. Conversely, if the filament diameter exceeds 2 mm, the three-dimensionally bound filaments tend to lose their soft feel.

[0055] The bulk density of the filament three-dimensional assembly can be measured, for example, by a measurement method using a rectangular parallelepiped measurement sample. In this measurement method, first, the mass W (kg) of the measurement sample and the size (m) of the measurement sample in each direction (vertical, horizontal, and height directions) are measured. In addition, the volume V (m) of the measurement sample is calculated by multiplying the size (m) of the measurement sample in each direction (vertical, horizontal, and height directions). 3 ) is calculated. Next, the bulk density (kg / m 3 ) is the mass W (kg) of the measurement sample and the volume V (m 3 ) is calculated by dividing by the bulk density of the three-dimensional filament bond. 3 If less than Filament 3D assembly The mattress itself is prone to deformation in the longitudinal direction, and oval grooves and depressions are likely to occur on the surface of the mattress. 3 If the weight exceeds this limit, the three-dimensional filament bond becomes heavy and difficult to transport.

[0056] In the manufacturing process for the three-dimensional bonded filaments of the mattress core 41, molten thermoplastic resin is extruded vertically downward from multiple horizontally arranged nozzles. Molten filaments with a cross-sectional diameter of approximately 1 mm are dropped into cooling water, where the buoyancy of the water causes loops to form. At the same time, the looped molten filaments are fused and bonded three-dimensionally to each other, resulting in a resilient three-dimensional bonded filament. By controlling the width of the molten filaments with a chute and a take-up machine, a smooth surface layer with a higher filament density at both ends of the thickness direction than at the center of the thickness direction can be formed.

[0057] The mattress core material 41 has smooth surface layers at both ends in the thickness direction where the filament density is higher than that at the center in the thickness direction, and the thickness, filament diameter and bulk density are within the above-mentioned ranges, Filament 3D assemblyThis makes it possible to prevent as much as possible the formation of oval grooves on the surface of the mattress 1 due to deformation of the cushion bodies 21 to 23 in the longitudinal direction, without impairing the drainage and drying properties of the mattress 1.

[0058] Each of the cushion bodies 21-23 may be formed using a resin three-dimensional filament assembly having smooth surface layers (layers in which the filament density is higher at both ends in the thickness direction) at the ends. Each of the cushion bodies 21-23 has a structure in which three thin rectangular parallelepiped three-dimensional filament assembly bodies (referred to as a lower layer, a middle layer, and an upper layer, respectively, for convenience) are stacked from bottom to top. Each of the cushion bodies 21-23 may be formed by bonding each layer formed separately using an adhesive.

[0059] The inner covers 31 to 33 are formed with exposed regions 37 to 39 that expose a portion of the upper and lower surfaces of the mattress cores 41 to 43, respectively.

[0060] 7 is a diagram showing the outer shape of the inner cover 31. Of these, FIG. 7(1) is a plan view of the inner cover 31, FIG. 7(2) is a right side view of the inner cover 31, and FIG. 7(3) is a bottom view of the inner cover 31. The inner cover 31 comprises an upper inner sheet 34, a lower inner sheet 35, and a side inner sheet 36. The exposed region 37 of the inner cover 31 exposes the upper and lower surfaces and the side of one of the four corners of the mattress core 41. 。 This exposed area 37 is formed by a cutout having a right-angled triangular shape in a plan view in at least one of the four corners of the inner cover 31. The exposed area 37 is formed by a cutout having a right-angled triangular shape in a plan view in at least one of the four corners of the inner cover 31. The exposed area 37 in the corner exposes the top and bottom surfaces and the side surfaces of the mattress core 41.

[0061] The inner cover 31 is formed so that the side surfaces indicated by reference symbols 21a to 21d are connected in the circumferential direction counterclockwise in Fig. 7(1) from the exposed region 37 to form a pentagon in plan view. To enable the mattress core 41 to be placed in and removed from the inner cover 31, the upper inner sheet 34 and the side inner sheets 36 are provided with a fastener 51 using a woven tape that extends in the range indicated by the symbols of many protrusions and can be opened and closed from approximately the center of the side surface 21b in the vertical direction in Fig. 7(1) through the side surface 21c to approximately the center of the side surface 21c in the vertical direction in Fig. 7(1).

[0062] As is clear from the above-mentioned FIGS. 1 and 3, the mattress cover 10 is Exposed area 37 of inner cover 31 The mattress cover 10 is opened so that the mattress core 41 can be seen. Therefore, the mattress cushion 20 can be covered with the mattress cover 10 without removing the mattress cover 10. Exposed area 37 of inner cover 31 The exposed area 37 can be seen by the user. exposed from The mattress core 41 can be touched by hand. exposed from The aforementioned characteristics of the mattress core 41, such as hardness, can be easily known.

[0063] Indication sections 44, 45 are formed on the upper inner sheet 34 and the lower inner sheet 35 of the inner cover 31 along the hypotenuses of the right-angled triangular exposed area 37. The indication sections 44, 45 indicate the characteristics of the mattress core 41 exposed from the exposed area 37. Indication sections 46, 47; 48, 49 are similarly formed along the hypotenuses of the exposed areas 38, 39 of the inner covers 32, 33, respectively.

[0064] Figure 8 is a plan view showing the properties of the mattress core 41 displayed on the display unit 44. As an example, as shown in Figures 8(1) to 8(4), the display unit 44 displays "1 SOFT," "2 MODERATE," "3 FIRM," and "4 EXTRA FIRM" using a combination of numbers and letters. Each of the numbers and letters represents a property of the mattress core 41.

[0065] Since the display sections 44-49 that display the characteristics of the mattress core 41 are formed along the hypotenuse of the exposed areas 37-39 of a right-angled triangle, the user can visually check the exposed areas 37-39 and simultaneously understand the display contents of the display sections 44-49. This allows the user to easily understand the sleeping comfort and other characteristics of the cushion bodies 21-23. Since the hypotenuse of the right-angled triangle is longer than the remaining two sides that sandwich the right angle, the display sections formed near the exposed areas can be made larger in area and easier to see. The remaining display sections 45, 46, 47, 48, 49 may also be configured in a similar manner.

[0066] Figure 9 is a cross-sectional view taken along the cutting line IX-IX in Figure 1, with the mattress cover 10 of Figure 1 housing the mattress cushion 20 as in Figure 2. Figure 10 is a cross-sectional view taken along the cutting line XX in Figure 1, with the mattress cover 10 housing the mattress cushion 20 as in Figure 2. The mattress cover 10 includes an upper cover part 11 that covers the top of the mattress cushion 20, and side cover parts 12 that are continuous with the upper cover part 11 and cover and fasten the sides of the mattress cushion 20. The mattress cover 10 is Exposed area 37 of inner cover 319 and 10)。 The upper cover part 11 is formed by quilting (needle stitching) an upper cover sheet 15, a lower cover sheet 16, and a cushion material 17 having elasticity in the thickness direction interposed therebetween. A peripheral part 24 of the upper cover sheet 15 and the lower cover sheet 16 of the upper cover part 11 protrudes outward (to the right in Figures 9 and 10) and is sewn to a folded part 25 protruding outward (to the right in Figures 9 and 10) of the upper part of the side cover sheet 13 of the side cover part 12 using a hem tape 26, forming a seam 27. A lower part 28 of the side cover sheet 13 of the side cover part 12 has a storage part formed by folding it inward (to the left in Figures 9 and 10), and the fastening member 14 is stored in this storage part. The tightening members 14 are strip-shaped elastic bodies such as rubber cords formed in an endless loop around the entire periphery of the side cover portions 12, and their resilient contraction force resiliently tightens the lower portions of the side surfaces of the mattress cushion 20 in the circumferential direction. As shown in the bottom view of Figure 3 with the mattress cover 10 in its natural state, the resilient contraction force of the tightening members 14 keeps the tightening members 14 in a ring shape inside the outer periphery of the top cover portion 11. The tightening members 14 may be attached to the lower portions of the side cover sheet 13, spaced apart in the circumferential direction. In this way, the side cover portions 12 are configured to cover and tighten the sides of the mattress cushion 20, and the mattress cover 10 is attached to accommodate the mattress cushion 20 by covering it from above, so that it can be used with mattress cushions of various thicknesses. For example, when the thickness of the mattress cushion 20 is large, the fastening member 14 is located in the middle or upper part of the side of the mattress cushion 20, and when the thickness is small, the fastening member 14 is located at the bottom as described above, or at the peripheral edge 57 of the bottom surface from the side of the mattress cushion 20 as shown in FIG. 12 described later. to Located across.

[0067] Fig. 11 is a cross-sectional view showing a portion of another embodiment of the present invention. Fig. 11 corresponds to the configuration shown in Fig. 9 of the previously described embodiment. In this embodiment, a cushion sheet 52 is laminated between the mattress cushion 20 and the upper cover portion 11 of the mattress cover 10. Although the upper cover portion 11 is shown as a single upper cover sheet in Fig. 11, it may be realized by the configuration shown in Fig. 9 or by other configurations. The cushion sheet 52 is configured by interposing a cushion material 55 having a resilient force in the thickness direction between upper and lower sheets 53, 53. The cushion sheet 52 may be fixed to the lower surface of the upper cover portion 11, or may be configured separately from the upper cover portion 11.

[0068] Fig. 12 is a cross-sectional view showing a portion of yet another embodiment of the present invention. Fig. 11 corresponds to the configuration shown in Fig. 9 of the previously described embodiment. This embodiment is similar to the previously described embodiments, but what is noteworthy is that the lower portion 29 of the side cover portion 12 covers the mattress cushion 20 from its side to its underside peripheral edge 57, and near this peripheral edge 57, the side cover sheet 13 of the side cover portion 12 has a storage portion formed by folding inward (upward in Fig. 12), and this storage portion stores the fastening member 14. The fastening member 14 resiliently fastens the mattress cushion 20 from its side to its underside peripheral edge 57.

[0069] Fig. 13 is a perspective view showing a cushion body 21 according to another embodiment of the present invention. The same reference numerals are used to denote corresponding components in the above-described embodiment. Expose exposed area 59 The display unit 44 may be formed on the upper and lower surfaces of the inner cover 31 of the cushion body 21 at a position other than the above-mentioned corners, for example, at a position closer to the center. 59 is formed at a position near [Industrial Applicability]

[0070] The present invention can be used in a mattress formed using a cushion body.

[0071] Although the embodiments of the present disclosure have been described in detail above, the present invention is not limited to the above-described embodiments, and various modifications and improvements are possible within the scope of the gist of the present invention. It goes without saying that all or part of the components constituting each of the above-described embodiments can be combined as appropriate within the scope of not contradicting each other. [Explanation of symbols]

[0072] 1 mattress 10. Mattress Covers 11 Top cover 12 Side cover 13, 13a~13d Side cover sheet 14 Fastening member 15 Top cover sheet 16 Bottom cover sheet 17 Cushioning material 20 Mattress cushions 21~23 Cushion body 24 Periphery 28 Lower 31~33 Inner cover 34 Upper inner sheet 35 Lower inner sheet 36 Side inner sheet 37~39, 59 exposed area 41~43 Mattress core material 44, 45, 46, 47:48, 49 display section 51 Zipper 52 Cushion seat 57 Periphery

Claims

1. Mattress cushions and A mattress including a mattress cover that houses a mattress cushion and on which a user can lie, (a) The mattress cushion comprises a single or multiple cushion bodies arranged side by side; The cushion body is a mattress core material having a flat overall shape, the mattress core material including a three-dimensional filament bonded body in which molten thermoplastic resin filaments are bonded together in a three-dimensional net shape; an inner cover that houses the mattress core; The inner cover has exposed areas that expose a portion of each of the upper and lower surfaces of the mattress core, (b) The mattress cover is an upper cover portion that covers the upper part of the mattress cushion; a side cover portion connected to the top cover portion and covering and fastening the side surface of the mattress cushion; The mattress cover is characterized in that the exposed area of ​​the inner cover is open so that the mattress core can be seen.

2. The side cover is a side cover sheet connected to the top cover portion; 2. The mattress according to claim 1, further comprising fastening members provided on the side cover sheets for fastening the sides of the mattress cushion in the circumferential direction.

3. 2. The mattress according to claim 1, wherein an indicator is formed near the exposed area on the outer surface of the inner cover to indicate the characteristics of the mattress core material exposed from the exposed area.

4. The mattress core of the cushion body is a rectangular body, The mattress of claim 1, characterized in that the exposed area of ​​the inner cover is formed by a cutout having a right-angled triangular shape in a plan view, which exposes the upper and lower surfaces and side surfaces of at least one corner portion of the mattress core.

5. The mattress of claim 4, wherein an indicia is formed along the hypotenuse of the exposed area of ​​the right-angled triangle, and the indicia indicates the characteristics of the mattress core material exposed from the exposed area.

6. Mattress cushions and A mattress including a mattress cover that houses a mattress cushion and on which a user can lie, (a) The mattress cushion comprises a single or multiple cushion bodies arranged side by side; The cushion body is a mattress core material having a flat overall shape, the core material including a three-dimensional filament bonded body in which molten thermoplastic resin filaments are bonded together in a three-dimensional net shape; an inner cover that houses the mattress core; The inner cover has exposed areas that expose a portion of each of the upper and lower surfaces of the mattress core, (b) The mattress cover is an upper cover portion that covers the upper part of the mattress cushion; a side cover portion connected to the upper cover portion and covering and fastening the mattress cushion from the side to the peripheral edge of the lower surface, The mattress cover is characterized in that the exposed area of ​​the inner cover is open so that the mattress core can be seen.

7. 10. The mattress according to claim 1 or 6, wherein a cushion sheet is laminated between the mattress cushion and the upper cover portion of the mattress cover.

8. A single or multiple cushion bodies arranged side by side to form a mattress cushion contained in a mattress cover on which a user can lie, a mattress core material having a flat overall shape, the core material including a three-dimensional filament bonded body in which molten thermoplastic resin filaments are bonded together in a three-dimensional net shape; an inner cover that houses the mattress core; The cushion body is characterized in that the inner cover is formed with exposed regions that expose a portion of each of the upper and lower surfaces of the mattress core.

9. A mattress cover that accommodates a mattress cushion composed of a single or multiple cushion bodies arranged side by side and on which a user can lie, an upper cover portion that covers the upper part of the mattress cushion; The mattress cover is characterized by including side cover parts that are connected to the top cover part and cover and fasten the sides of the mattress cushion.

10. The side cover is a side cover sheet connected to the top cover portion; 10. The mattress cover according to claim 9, further comprising fastening members provided on the side cover sheets for fastening the sides of the mattress cushion in the circumferential direction.

11. The side cover is a side cover sheet that is connected to the upper cover portion and covers the sides and the peripheral edge of the lower surface of the mattress cushion; 10. The mattress cover according to claim 9, further comprising a fastening member provided in a portion of the side cover sheet that covers the peripheral edge of the underside of the mattress cushion, for fastening the side of the mattress cushion in the circumferential direction.

12. 12. The mattress according to claim 10 or 11, wherein the fastening member is made of a strip-shaped elastic material that exerts a contracting force in the longitudinal direction.

13. 12. The mattress cover according to claim 10 or 11, wherein the fastening member is made of a non-stretchable band-like body and fastens by utilizing the elastic force of the mattress cushion.