JP2020014737A - mattress - Google Patents

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JP2020014737A
JP2020014737A JP2018140722A JP2018140722A JP2020014737A JP 2020014737 A JP2020014737 A JP 2020014737A JP 2018140722 A JP2018140722 A JP 2018140722A JP 2018140722 A JP2018140722 A JP 2018140722A JP 2020014737 A JP2020014737 A JP 2020014737A
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mattress
zone
convex portion
convex
longitudinal direction
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JP7212469B2 (en
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太田　胆斗
Tanto Ota
胆斗 太田
卓也 菊池
Takuya Kikuchi
卓也 菊池
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Inoac Corp
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Inoue MTP KK
Inoac Corp
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Abstract

To provide an easily bendable mattress.SOLUTION: A mattress 10 is formed of an elastically deformable soft foam body in a rectangular shape. A plurality of first convex parts 12 arranged in a grid pattern are provided on one surface of the mattress 10, sandwiching first groove parts 18 extending along longitudinal and transverse directions of the mattress 10. A plurality of second convex parts 14 arranged in a grid pattern are provided on the other surface of the mattress 10, sandwiching second groove parts 20 extending along longitudinal and transverse directions of the mattress 10. The mattress 10 is divided into a plurality of zones according to the region in the longitudinal direction, and intervals between the first convex parts 12 and 12 adjacent to each other in the longitudinal direction differ depending on the zone.SELECTED DRAWING: Figure 1

Description

この発明は、マットレスに関するものである。   The present invention relates to a mattress.

背中対応部分を上げて上体を起こしたり、膝対応部分を上げて膝を持ち上げたりするなど、使用者の動作や姿勢維持を補助する介護用や医療用の可変ベッドがある。このようなベッドには、各部分の姿勢変化に合わせて変形可能なマットレスが用いられている(例えば、特許文献１参照)。   There are nursing and medical adjustable beds that assist the user in maintaining his / her posture and posture, such as raising his / her back and raising his / her knees. In such a bed, a mattress that can be deformed in accordance with a change in posture of each part is used (for example, see Patent Document 1).

特開２００４−４９４１４号公報JP-A-2004-49414

前述した可変ベッドは、背中対応部分が腰対応部分を起点に持ち上がるだけでなく、背中対応部分の両脇が更に持ち上がって肩が横にずれないように保持するなど、使用者の姿勢保持をより好適に補助し得るものがある。このため、形状変化する可変ベッドに追従して、より曲がり易く構成されたマットレスが求められている。   The adjustable bed described above not only raises the back-corresponding part starting from the waist-corresponding part, but also raises both sides of the back-corresponding part and holds the shoulder so that it does not shift sideways. Some can suitably assist. For this reason, there is a demand for a mattress configured to be more easily bent to follow a variable bed whose shape changes.

本発明は、従来の技術に係る前記問題に鑑み、これらを好適に解決するべく提案されたものであって、曲がり易いマットレスを提供することを目的とする。   SUMMARY OF THE INVENTION The present invention has been proposed in view of the above-mentioned problems relating to the prior art, and has been proposed in order to appropriately solve them, and an object of the present invention is to provide a mattress which is easy to bend.

前記課題を克服し、所期の目的を達成するため、本発明のマットレスは、
弾性変形可能な軟質発泡体で矩形状に形成されたマットレスであって、
マットレスの表裏のうちの一面に、他面と反対向きへ突出するように設けられ、該マットレスの長手方向および短手方向へ延在する第１溝部を挟んで碁盤目状に配列された複数の第１凸部と、
マットレスの表裏のうちの他面に、一面と反対向きへ突出するように設けられ、該マットレスの長手方向および短手方向へ延在する第２溝部を挟んで碁盤目状に配列された複数の第２凸部と、を備え、
前記第１凸部は、使用者の体を受ける支持面が、該第１凸部における前記第１溝部に臨む外縁から中央部側へ向かうにつれて前記他面と反対向きへ傾く傾斜面を有する形状で形成され、
前記マットレスの一面は、該マットレスの長手方向の領域に応じてゾーンＡ１とゾーンＢ１とに区分され、
前記ゾーンＡ１を構成する前記第１凸部は、前記ゾーンＢ１を構成する前記第１凸部よりも前記長手方向の寸法が大きく設定され、
前記ゾーンＡ１において前記長手方向に隣り合う前記第１凸部の間隔、並びに該ゾーンＡ１と前記ゾーンＢ１との境界において前記長手方向に隣り合う前記第１凸部の間隔が、前記ゾーンＢ１において前記長手方向に隣り合う前記第１凸部の間隔よりも広く設定されていることを要旨とする。 In order to overcome the above problems and achieve the intended purpose, the mattress of the present invention is:
A mattress formed in a rectangular shape with an elastically deformable soft foam,
A plurality of mattresses are provided on one of the front and back surfaces of the mattress so as to protrude in a direction opposite to the other surface, and are arranged in a grid pattern with first grooves extending in the longitudinal direction and the transverse direction of the mattress therebetween. A first projection,
A plurality of mattresses are provided on the other of the front and back surfaces of the mattress so as to protrude in a direction opposite to the one surface, and are arranged in a grid pattern with second groove portions extending in the longitudinal direction and the transverse direction of the mattress interposed therebetween. A second convex portion,
The first convex portion has a shape in which a support surface for receiving a user's body has an inclined surface that is inclined in a direction opposite to the other surface as it goes from an outer edge of the first convex portion facing the first groove toward a central portion. Formed by
One surface of the mattress is divided into a zone A1 and a zone B1 according to a longitudinal region of the mattress,
The first convex portion configuring the zone A1, the dimension in the longitudinal direction is set larger than the first convex portion configuring the zone B1,
In the zone A1, the interval between the first convex portions adjacent in the longitudinal direction, and the interval between the first convex portions adjacent in the longitudinal direction at the boundary between the zone A1 and the zone B1, are the same in the zone B1. The gist is that it is set to be wider than the interval between the first protrusions adjacent in the longitudinal direction.

本発明に係るマットレスによれば、可変ベッドの形状変化に追従して曲がり易い。   According to the mattress according to the present invention, it is easy to bend following the change in the shape of the variable bed.

本発明の好適な実施例に係るマットレスを表側から示す斜視図である。1 is a perspective view showing a mattress according to a preferred embodiment of the present invention from the front side. 実施例のマットレスを示す表面図である。It is a front view which shows the mattress of an Example. 実施例のマットレスを示す裏面図である。It is a back view showing the mattress of an example. 実施例のマットレスを横側から見た横側面図である。It is the lateral side view which looked at the mattress of an example from the lateral side. 実施例のマットレスを縦側から見た縦側面図である。It is the longitudinal side view which looked at the mattress of an example from the longitudinal side. 実施例のマットレスを横側から見た拡大断面図である。It is the expanded sectional view which looked at the mattress of an example from the side. 実施例のマットレスを縦側から見た拡大断面図である。It is the expanded sectional view which looked at the mattress of the example from the longitudinal side. 実施例のマットレスの曲げた状態を示す横側面図である。It is a side view which shows the state which bent the mattress of the Example. 実施例のマットレスの曲げた状態を示す縦側面図である。It is a longitudinal side view showing the bent state of the mattress of an example. 第１凸部の関係を横側から見た説明図であり、(ａ)は表ゾーンＢ１で縦方向に隣り合う第１凸部の関係であり、(ｂ)は表ゾーンＡ１で縦方向に隣り合う第１凸部の関係であり、(ｃ)は表ゾーンＡ１と表ゾーンＢ１との境界で縦方向に隣り合う第１凸部の関係を示す。It is explanatory drawing which looked at the relationship of the 1st convex part from the horizontal side, (a) is the relationship of the 1st convex part adjacent in the vertical direction in the front zone B1, (b) is the vertical direction in the front zone A1. It is a relationship between adjacent first convex portions, and (c) shows a relationship between the first convex portions vertically adjacent to each other at the boundary between the front zone A1 and the front zone B1. 第２凸部の関係を横側から見た説明図であり、(ａ)は裏ゾーンＢ２で縦方向に隣り合う第２凸部の関係であり、(ｂ)は裏ゾーンＡ２で縦方向に隣り合う第２凸部の関係であり、(ｃ)は裏ゾーンＡ２と裏ゾーンＢ２との境界で縦方向に隣り合う第２凸部の関係を示す。It is explanatory drawing which looked at the relationship of the 2nd convex part from the horizontal side, (a) is the relationship of the 2nd convex part which adjoins the vertical direction in the back zone B2, (b) is the vertical direction in the back zone A2. This is the relationship between the adjacent second convex portions, and (c) shows the relationship between the second convex portions that are vertically adjacent to each other at the boundary between the back zone A2 and the back zone B2. 実施例の第１凸部を拡大して示す斜視図である。It is a perspective view which expands and shows the 1st convex part of an Example.

次に、本発明に係るマットレスにつき、好適な実施例を挙げて、添付図面を参照して以下に説明する。   Next, a mattress according to the present invention will be described below with reference to the accompanying drawings by way of preferred embodiments.

図１〜図３に示すように、マットレス１０は、矩形状に形成された板状体であり、主に使用者が長手方向に横たわって用いられる。マットレス１０は、弾性変形可能な軟質発泡体で構成されている。実施例では、単一の軟質発泡体によって、マットレス１０の各部が一体的に形成されている。軟質発泡体としては、ポリウレタンフォームなどを用いることができる。マットレス１０に好適な軟質発泡体としては、以下のような物性を有していることが好ましい。なお、以下の物性は、括弧内のＪＩＳ規格に準拠して測定した値である。
・密度：２０ｋｇ／ｍ３〜７０ｋｇ／ｍ３（ＪＩＳ Ｋ ７２２２）
・２５％硬さ：１５０Ｎ〜３００Ｎ （ＪＩＳ Ｋ ６４００）
・反発弾性：４０％〜７０％ （ＪＩＳ Ｋ ６４００）
・伸び：５０％〜２００％ （ＪＩＳ Ｋ ６４００）
このように、軟質発泡体としては、比較的硬くて、反発弾性が高いとマットレス１０として好適である。 As shown in FIGS. 1 to 3, the mattress 10 is a plate-like body formed in a rectangular shape, and is mainly used by a user lying down in a longitudinal direction. The mattress 10 is made of an elastically deformable soft foam. In the embodiment, each part of the mattress 10 is integrally formed by a single soft foam. As the flexible foam, polyurethane foam or the like can be used. The soft foam suitable for the mattress 10 preferably has the following physical properties. The following physical properties are values measured according to JIS standards in parentheses.
Density: 20kg / m 3 ~70kg / m 3 (JIS K 7222)
・ 25% hardness: 150N to 300N (JIS K 6400)
-Rebound resilience: 40% to 70% (JIS K 6400)
-Elongation: 50% to 200% (JIS K 6400)
As described above, the soft foam is suitable as the mattress 10 if it is relatively hard and has high rebound resilience.

図４および図５に示すように、マットレス１０は、該マットレス１０の表裏のうちの一面(以下、便宜的に表面という。)に設けられた複数の第１凸部１２と、該マットレス１０の表裏のうちの他面(以下、便宜的に裏面という。)に設けられた複数の第２凸部１４と、第１凸部１２および第２凸部１４を支える基部１６とを備えている。マットレス１０は、第１凸部１２および第２凸部１４が、基部１６から互いに反対向きへ突出しており、実施例では、第１凸部１２、第２凸部１４および基部１６が継ぎ目なく一体的に形成されている。そして、マットレス１０は、表裏の何れの面を上側にしても使用することができるリバーシブルタイプである。第１凸部１２および第２凸部１４は、該凸部１２,１４を支持する基部１６に連なる根元部１２ａ,１４ａと、該根元部１２ａ,１４ａに連ねて設けられて、使用者の体を受ける支持面を構成する先端部１２ｂ,１４ｂとを備えている(図６,図７および図１２参照)。なお、第１凸部１２および第２凸部１４は、先端部１２ｂ,１４ｂと根元部１２ａ,１４ａとが、先端部１２ｂ,１４ｂの平面視における外縁で根元部１２ａ,１４ａと繋がって構成されている。   As shown in FIGS. 4 and 5, the mattress 10 includes a plurality of first convex portions 12 provided on one of the front and back surfaces of the mattress 10 (hereinafter, referred to as a front surface for convenience). It includes a plurality of second protrusions 14 provided on the other surface (hereinafter referred to as a back surface for convenience) of the front and back, and a base 16 supporting the first protrusion 12 and the second protrusion 14. In the mattress 10, the first convex portion 12 and the second convex portion 14 protrude from the base 16 in opposite directions. In the embodiment, the first convex portion 12, the second convex portion 14 and the base 16 are seamlessly integrated. Is formed. The mattress 10 is a reversible type that can be used even when any of the front and back surfaces is on the upper side. The first convex portion 12 and the second convex portion 14 are provided so as to be continuous with the base portions 12a and 14a connected to the base portion 16 that supports the convex portions 12 and 14, and the base portions 12a and 14a. (See FIGS. 6, 7 and 12). In addition, the 1st convex part 12 and the 2nd convex part 14 are comprised so that the front-end | tip part 12b, 14b and the base part 12a, 14a may connect with the base part 12a, 14a by the outer edge in planar view of the front-end part 12b, 14b. ing.

図１および図２に示すように、複数の第１凸部１２は、マットレス１０の表面において、マットレス１０の長手(以下、縦という。)方向および短手(以下、横という。)方向に沿うように延在する第１溝部１８を挟んで碁盤目状に配列されている。ここで、マットレス１０の表面において、横方向に直線的に延在する第１溝部１８を、横第１溝部１８Ａといい、縦方向に直線的に延在する第１溝部１８を、縦第１溝部１８Ｂと指称して区別する場合がある。マットレス１０の表面には、複数の第１凸部１２が縦横に規則的に並べて配置されている。第１凸部１２は、基部１６(第１溝部１８の底)から突出する部分であって、基部１６からの突出寸法(第１溝部１８の底と第１凸部１２の先端(突端)との距離)ｈ１が何れも同じに設定されている(図６および図７参照)。マットレス１０の表面は、複数の第１凸部１２の先端部１２ｂの支持面によって、使用者の体を受けるようになっている(図４および図５参照)。   As shown in FIGS. 1 and 2, the plurality of first protrusions 12 are arranged on the surface of the mattress 10 along the longitudinal (hereinafter, vertical) direction and the short (hereinafter, horizontal) direction of the mattress 10. Are arranged in a grid pattern with the first groove portion 18 extending likewise interposed therebetween. Here, on the surface of the mattress 10, the first groove portion 18 extending linearly in the horizontal direction is referred to as a horizontal first groove portion 18A, and the first groove portion 18 extending linearly in the vertical direction is referred to as a first vertical groove portion. It may be distinguished by being referred to as the groove 18B. On the surface of the mattress 10, a plurality of first protrusions 12 are regularly arranged vertically and horizontally. The first convex portion 12 is a portion that protrudes from the base 16 (the bottom of the first groove portion 18), and has a protrusion dimension from the base 16 (the bottom of the first groove portion 18 and the tip (protruding end) of the first convex portion 12). Are set to be the same (see FIGS. 6 and 7). The surface of the mattress 10 is adapted to receive a user's body by the support surfaces of the tip portions 12b of the plurality of first protrusions 12 (see FIGS. 4 and 5).

図３に示すように、複数の第２凸部１４は、マットレス１０の裏面において、縦方向(マットレス１０の長手方向)および横方向(マットレス１０の短手方向)に沿うように延在する第２溝部２０を挟んで碁盤目状に配列されている。ここで、マットレス１０の裏面において、横方向に直線的に延在する第２溝部２０を、横第２溝部２０Ａといい、縦方向に直線的に延在する第２溝部２０を、縦第２溝部２０Ｂと指称して区別する場合がある。マットレス１０の裏面には、複数の第２凸部１４が縦横に規則的に並べて配置されている。第２凸部１４は、基部１６(第２溝部２０の底)から突出する部分であって、基部１６からの突出寸法(第２溝部２０の底と第２凸部１４の先端(突端)との距離)ｈ２が何れも同じに設定されている(図６および図７参照)。マットレス１０は、裏面を上側にしても使用することができ、マットレス１０の裏面は、複数の第２凸部１４の先端部１４ｂの支持面によって、使用者の体を受けるようになっている。なお、実施例では、第１凸部１２の基部１６からの突出寸法ｈ１と第２凸部１４の基部１６からの突出寸法ｈ２とを同じに設定している(ｈ１＝ｈ２)。   As shown in FIG. 3, the plurality of second protrusions 14 extend on the back surface of the mattress 10 so as to extend along the vertical direction (the longitudinal direction of the mattress 10) and the horizontal direction (the short direction of the mattress 10). They are arranged in a grid pattern with two grooves 20 interposed therebetween. Here, on the back surface of the mattress 10, the second groove portion 20 extending linearly in the horizontal direction is referred to as a horizontal second groove portion 20A, and the second groove portion 20 extending linearly in the vertical direction is referred to as a second vertical groove portion. It may be distinguished by being referred to as the groove 20B. On the back surface of the mattress 10, a plurality of second protrusions 14 are arranged regularly and vertically. The second convex portion 14 is a portion protruding from the base 16 (the bottom of the second groove 20), and measures the size of the protrusion from the base 16 (the bottom of the second groove 20 and the tip (protruding end) of the second convex 14). Are set to be the same (see FIGS. 6 and 7). The mattress 10 can be used even when the back surface is on the upper side. The back surface of the mattress 10 is adapted to receive the body of the user by the support surface of the tip portions 14b of the plurality of second convex portions 14. In the embodiment, the protrusion h1 of the first protrusion 12 from the base 16 and the protrusion h2 of the second protrusion 14 from the base 16 are set to be the same (h1 = h2).

図２〜図４に示すように、マットレス１０の表面および裏面のそれぞれは、マットレス１０の縦方向(マットレス１０の長手方向)の領域に応じてゾーンＡとゾーンＢとに区分されている。ここで、マットレス１０は、ゾーンＢがゾーンＡよりも体圧分散性が高くなるように構成されている。図６に示すように、マットレス１０は、ゾーンＢを構成する凸部１２,１４の縦方向の寸法ｔｂ１,ｔｂ２を、ゾーンＡを構成する凸部１２,１４の縦方向の寸法ｔａ１,ｔａ２よりも小さく設定している。これにより、ゾーンＢにおいてゾーンＡよりも荷重をきめ細かく支えて、ゾーンＢの体圧分散性が高くなるようにしている。マットレス１０は、ゾーンＢにおいて縦方向に隣り合う横溝部１８Ａ,２０Ａ同士の間隔が、ゾーンＡにおいて縦方向に隣り合う横溝部１８Ａ,２０Ａ同士の間隔よりも狭くなっている。   As shown in FIGS. 2 to 4, each of the front surface and the back surface of the mattress 10 is divided into a zone A and a zone B according to a region in a longitudinal direction of the mattress 10 (a longitudinal direction of the mattress 10). Here, the mattress 10 is configured so that the zone B has higher body pressure dispersibility than the zone A. As shown in FIG. 6, in the mattress 10, the vertical dimensions tb1 and tb2 of the convex parts 12 and 14 forming the zone B are made larger than the vertical dimensions ta1 and ta2 of the convex parts 12 and 14 forming the zone A. Is also set small. Thereby, the load is more finely supported in the zone B than in the zone A, and the body pressure dispersibility of the zone B is increased. In the mattress 10, the interval between the horizontal groove portions 18A and 20A vertically adjacent in the zone B is smaller than the interval between the horizontal groove portions 18A and 20A vertically adjacent in the zone A.

マットレス１０の表裏で区別する場合、表面のゾーンに「表」を付して、表ゾーンＡ１および表ゾーンＢ１といい、裏面のゾーンに「裏」を付して、裏ゾーンＡ２および裏ゾーンＢ２という。具体的には、マットレス１０は、その両面に、ゾーンＢ、ゾーンＡ、ゾーンＢ、ゾーンＡおよびゾーンＢの順に、ゾーンＡとゾーンＢとが縦方向へ交互に設けられている。ゾーンＢが、マットレス１０に横になった使用者の頭部、臀部および足首からつま先にかけた足部のそれぞれに対応する領域を構成し、ゾーンＡが、肩から腰にかけた胴部および股から膝裏乃至ふくらはぎにかけた脚部のそれぞれに対応する領域を構成する。マットレス１０には、縦方向中央部に設けられたゾーンＢを挟んで対称な関係でゾーンＡ,Ｂが設けられており、縦方向の何れの向きを頭側にしても使用できるように対称的に構成されている。このように、マットレス１０は、表裏の何れの面についても、支持する体の部位に応じて体圧分散性が異なるゾーンＡ,Ｂが設けてあるので、使用者の体を適切に支えることができ、使用者への負担を軽減することができる。なお、表ゾーンＡ１を構成する第１凸部１２を、第１凸部１２ＺＡといい、表ゾーンＢ１を構成する第１凸部１２を、第１凸部１２ＺＢという場合がある。また、裏ゾーンＡ２を構成する第２凸部１４を、第２凸部１４ＺＡといい、裏ゾーンＢ２を構成する第２凸部１４を、第２凸部１４ＺＢという場合がある。   When the front and back sides of the mattress 10 are distinguished from each other, the front side zone is denoted by “front”, and the front side zone is referred to as front zone A1 and front zone B1. That. Specifically, the mattress 10 is provided with zones A and B alternately in the vertical direction on the both surfaces in the order of zone B, zone A, zone B, zone A, and zone B. Zone B constitutes an area corresponding to each of the head, buttocks and feet of the user lying on the mattress 10 from the ankle to the toes, and Zone A comprises the torso and the crotch from the shoulder to the waist. An area corresponding to each of the legs from the back of the knee to the calf is formed. The mattress 10 is provided with zones A and B in a symmetric relationship with respect to a zone B provided in a central portion in the vertical direction. Is configured. As described above, the mattress 10 is provided with the zones A and B having different body pressure dispersibility depending on the part of the body to be supported on any of the front and back surfaces, so that the body of the user can be appropriately supported. It is possible to reduce the burden on the user. In addition, the 1st convex part 12 which comprises the surface zone A1 may be called the 1st convex part 12ZA, and the 1st convex part 12 which comprises the surface zone B1 may be called the 1st convex part 12ZB. Further, the second convex portion 14 constituting the back zone A2 may be referred to as a second convex portion 14ZA, and the second convex portion 14 constituting the back zone B2 may be referred to as a second convex portion 14ZB.

図６および図１０に示すように、第１凸部１２は、基部１６に連なる根元部１２ａと、根元部１２ａに支持され、該第１凸部１２の突端を構成する先端部１２ｂとから構成されている。第１凸部１２における先端部１２ｂの支持面は、該支持面において横第１溝部１８Ａに臨む縦方向の外縁および該支持面において縦第１溝部１８Ｂに臨む横方向の外縁から中央部側へ向かうにつれて表側へ傾く傾斜面を有するテーパ状に形成されている。実施例の第１凸部１２の先端部１２ｂは、該先端部１２ｂの中央部側から縦方向および横方向へ該先端部１２ｂの外縁に向かうにつれて、支持面が裏側へ向けて傾いた先細り形状になっている。このように、実施例において、第１凸部１２の先端部１２ｂにおいて使用者に接する支持面は、該支持面の中央側から外縁へ向かうにつれて基部１６側へ全体的に傾いている。第１凸部１２は、該第１凸部１２における縦方向の中央を表裏方向に通る線を挟んで対称な形状であり、該第１凸部１２における横方向の中央を表裏方向に通る線を挟んで対称な形状で形成されている。   As shown in FIGS. 6 and 10, the first convex portion 12 includes a root portion 12a connected to the base portion 16 and a distal end portion 12b supported by the root portion 12a and forming a protruding end of the first convex portion 12. Have been. The support surface of the distal end portion 12b of the first convex portion 12 extends from the vertical outer edge facing the first horizontal groove 18A on the support surface and the horizontal outer edge facing the first vertical groove 18B on the support surface toward the center. It is formed in a tapered shape having an inclined surface inclined toward the front side as it goes. The distal end portion 12b of the first convex portion 12 of the embodiment has a tapered shape in which the support surface is inclined toward the back side from the central portion side of the distal end portion 12b toward the outer edge of the distal end portion 12b in the vertical and horizontal directions. It has become. As described above, in the embodiment, the support surface in contact with the user at the distal end portion 12b of the first convex portion 12 is entirely inclined toward the base portion 16 from the center to the outer edge of the support surface. The first protrusion 12 has a symmetrical shape with a line passing through the center in the vertical direction of the first protrusion 12 in the front and back direction, and a line passing through the center in the horizontal direction of the first protrusion 12 in the front and back direction. Is formed in a symmetrical shape with respect to.

図６,図１０および図１２に示すように、第１凸部１２は、先端部１２ｂにおける支持面の外縁が根元部１２ａよりも縦方向(マットレス１０の長手方向)へ張り出して、長手方向において先端部１２ｂと比べて根元部１２ａが細くなる形状で形成されている。第１凸部１２は、縦方向の断面形状が、先端部１２ｂと比べて根元部１２ａが細くなる、基部１６側がくびれた形状で形成されており、横から見た外形が所謂キノコ形状になっている。より具体的には、第１凸部１２は、縦方向の断面形状において、先端部１２ｂの両外縁間で縦方向の最大幅となり、先端部１２ｂの先端側にいくにつれて、徐々に縦方向の幅が狭くなっていく。第１凸部１２は、先端部１２ｂの外縁から根元部１２ａの基部１６との付け根側にいくにつれて、徐々に縦方向の幅が狭くなっていき、底側近傍で縦方向の最小幅となる。その後、根元部１２ａがＲ状に丸みを帯びたくびれ形状であることとの関係で、基部１６に達する直前で縦方向の幅が少し大きくなる。このように、第１凸部１２は、縦方向の断面形状において、最大幅である先端部１２ｂに比べて最小幅である根元部１２ａのほうが細くなって、基部１６側がくびれた形状で形成されている。   As shown in FIG. 6, FIG. 10 and FIG. 12, the first convex portion 12 has an outer edge of the support surface at the distal end portion 12b protruding more vertically than the root portion 12a (the longitudinal direction of the mattress 10). The base 12a is formed in a shape that is thinner than the tip 12b. The first convex portion 12 has a vertical cross-sectional shape in which the root portion 12a is narrower than the distal end portion 12b, and the base portion 16 is formed in a constricted shape, and the outer shape when viewed from the side is a so-called mushroom shape. ing. More specifically, in the vertical cross-sectional shape, the first convex portion 12 has a maximum width in the vertical direction between both outer edges of the distal end portion 12b, and gradually increases in the vertical direction toward the distal end side of the distal end portion 12b. The width narrows. The first convex portion 12 gradually narrows in the vertical direction as it goes from the outer edge of the distal end portion 12b to the base of the base portion 12a with the base portion 16, and has the minimum vertical width near the bottom side. . Thereafter, the width in the vertical direction becomes slightly larger immediately before reaching the base 16 because of the fact that the root 12a has an R-shaped rounded constriction. As described above, in the vertical cross-sectional shape, the first convex portion 12 is formed in a shape in which the root portion 12a having the minimum width is narrower than the distal end portion 12b having the maximum width, and the base portion 16 is narrowed. ing.

図６および図７に示すように、第１凸部１２は、縦方向(マットレス１０の長手方向)において根元部１２ａがくびれた形状であるのに対して、横方向(マットレス１０の短手方向)において根元部１２ａがくびれていない形状である。すなわち、第１凸部１２は、横方向の断面形状が、先端部１２ｂの外縁における最大幅(横方向における先端部１２ｂの外縁間の距離)と根元部１２ａの幅が同じである。実施例において、第１凸部１２は、縦方向に向く側面が、根元部１２ａよりも先端部１２ｂが傘状に張り出すように、曲面がなだらかに連なるように形状変化し、横方向に向く側面が、根元部１２ａから先端部１２ｂの外縁にかけて直線的に立ち上がっている。   As shown in FIGS. 6 and 7, the first convex portion 12 has a shape in which the root portion 12 a is narrowed in the vertical direction (longitudinal direction of the mattress 10), whereas the first convex portion 12 has a narrowed shape in the horizontal direction (transverse direction of the mattress 10). ) Has a shape in which the root 12a is not constricted. That is, the first convex portion 12 has the same horizontal cross-sectional shape as the maximum width at the outer edge of the distal end portion 12b (the distance between the outer edges of the distal end portion 12b in the horizontal direction) and the width of the root portion 12a. In the embodiment, the first convex portion 12 changes its shape so that the side surface facing in the vertical direction is such that the tip portion 12b projects in an umbrella shape rather than the root portion 12a, so that the curved surface is smoothly connected, and faces in the horizontal direction. The side surface rises linearly from the root 12a to the outer edge of the tip 12b.

図６および図１０に示すように、縦方向(マットレス１０の長手方向)に隣り合う第１凸部１２,１２によって形作られる横第１溝部１８Ａは、互いに近づくように張り出した先端部１２ｂ,１２ｂの外縁同士で挟まれた開口側と比べて、先端部１２ｂよりも凹んだ根元部１２ａ,１２ａ同士で挟まれた底側が広く形成される。なお、横第１溝部１８Ａの開口(溝幅ｍａ１,ｍｂ１,ｂｍ１)は、縦方向に隣り合う第１凸部１２,１２において向かい合う先端部１２ｂ,１２ｂの外縁が最も近接する位置を指している。すなわち、横第１溝部１８Ａは、底側よりも狭い部分が開口側に設けられて、開口側と比べて底側が縦方向において広く形成されている。図７に示すように、横方向に隣り合う第１凸部１２,１２によって形作られる縦第１溝部１８Ｂは、先端部１２ｂ,１２ｂの外縁同士で挟まれる開口側から根元部１２ａ,１２ａ同士で挟まれる底側にかけて、基本的に同じ幅で形成されている。第１凸部１２は、縦方向においてくびれた根元部１２ａによって縦方向へ変形し易く構成されているが、横方向において根元部１２ａがくびれていない、またはくびれが小さいことで横方向へ変形し難く構成されている。   As shown in FIG. 6 and FIG. 10, the first horizontal grooves 18A formed by the first convex portions 12, 12 adjacent in the vertical direction (longitudinal direction of the mattress 10) have front end portions 12b, 12b projecting closer to each other. The bottom side sandwiched between the roots 12a, 12a recessed from the distal end 12b is formed wider than the opening side sandwiched between the outer edges of the. Note that the opening (groove width ma1, mb1, bm1) of the first horizontal groove portion 18A indicates a position where the outer edge of the front end portions 12b, 12b facing each other in the first convex portions 12, 12 vertically adjacent to each other is closest. . That is, the first horizontal groove portion 18A has a portion narrower than the bottom side provided on the opening side, and the bottom side is formed wider in the vertical direction than the opening side. As shown in FIG. 7, the first vertical grooves 18 </ b> B formed by the first protrusions 12, 12 adjacent to each other in the horizontal direction are formed between the roots 12 a, 12 a from the opening side sandwiched between the outer edges of the tips 12 b, 12 b. It is basically formed with the same width toward the sandwiched bottom side. The first convex portion 12 is configured to be easily deformed in the vertical direction by the root portion 12a which is constricted in the vertical direction, but is deformed in the horizontal direction because the root portion 12a is not constricted in the horizontal direction or the constriction is small. It is difficult to configure.

図６に示すように、表ゾーンＡ１を構成する第１凸部１２ＺＡにおける先端部１２ｂの外縁が、表ゾーンＢ１を構成する第１凸部１２ＺＢにおける先端部１２ｂの外縁よりも基部１６側に位置している。また、表ゾーンＢ１を構成する第１凸部１２ＺＢのくびれが、表ゾーンＡ１を構成する第１凸部１２ＺＡのくびれよりも、第１凸部１２の突出方向へ大きく形成されている。第１凸部１２ＺＢのくびれは、第１凸部１２ＺＡのくびれよりも浅いが、第１凸部１２ＺＡよりも縦方向(マットレス１０の長手方向)へ向けて広く開口している。従って、表ゾーンＡ１と表ゾーンＢ１との境界において縦方向に隣り合う第１凸部１２ＺＡ,１２ＺＢのうち、表ゾーンＡ１を構成する第１凸部１２ＺＡにおける先端部１２ｂの外縁が、表ゾーンＢ１を構成する第１凸部１２ＺＢにおける先端部１２ｂの外縁よりも、裏側に位置している。また、表ゾーンＡ１と表ゾーンＢ１との境界において縦方向に隣り合う第１凸部１２ＺＡ,１２ＺＢのうち、表ゾーンＡ１の第１凸部１２ＺＡのくびれよりも、表ゾーンＢ１の第１凸部１２ＺＢのくびれが、第１凸部１２の突出方向へ大きく形成されている。換言すると、境界において縦方向に隣り合う第１凸部１２ＺＡ,１２ＺＢは、一方の第１凸部１２ＺＡの先端部１２ｂにおいて縦方向に最も張り出した外縁が、他方の第１凸部１２ＺＢのくびれに向かい合う関係になっている。   As shown in FIG. 6, the outer edge of the distal end portion 12b of the first convex portion 12ZA constituting the front zone A1 is located closer to the base 16 than the outer edge of the distal end portion 12b of the first convex portion 12ZB constituting the front zone B1. are doing. Further, the narrowing of the first convex portion 12ZB forming the front zone B1 is formed larger in the projecting direction of the first convex portion 12 than the narrowing of the first convex portion 12ZA forming the front zone A1. The constriction of the first convex portion 12ZB is shallower than the constriction of the first convex portion 12ZA, but opens wider in the vertical direction (longitudinal direction of the mattress 10) than the first convex portion 12ZA. Accordingly, of the first convex portions 12ZA and 12ZB vertically adjacent to each other at the boundary between the front zone A1 and the front zone B1, the outer edge of the distal end portion 12b of the first convex portion 12ZA forming the front zone A1 is the front zone B1. Are located on the back side of the outer edge of the front end portion 12b of the first convex portion 12ZB. Further, among the first convex portions 12ZA and 12ZB vertically adjacent to each other at the boundary between the front zone A1 and the front zone B1, the first convex portion of the front zone B1 is larger than the constriction of the first convex portion 12ZA of the front zone A1. The constriction of 12ZB is formed to be large in the projecting direction of the first convex portion 12. In other words, the first protruding portions 12ZA and 12ZB vertically adjacent to each other at the boundary are such that the outer edge that protrudes the most in the vertical direction at the distal end portion 12b of one of the first protruding portions 12ZA is formed into a constriction of the other first protruding portion 12ZB. They are facing each other.

図６に示すように、表ゾーンＡ１の第１凸部１２ＺＡよりも表ゾーンＢ１の第１凸部１２ＺＢのほうが、基部１６から先端部１２ｂの外縁(縦方向へ最も張り出している部位)までが離れており、基部１６から先端部１２ｂの外縁までの距離が大きくなっている。表ゾーンＡ１の第１凸部１２ＺＡよりも表ゾーンＢ１の第１凸部１２ＺＢのほうが、根元部１２ａのくびれが基部１６と先端部１２ｂの外縁との間に大きく開口している。表ゾーンＢ１の第１凸部１２ＺＢよりも表ゾーンＡ１の第１凸部１２ＺＡのほうが、先端部１２ｂの外縁から基部１６側に開口する根元部１２ａのくびれの深さ(先端部１２ｂにおける縦方向の両外縁間の寸法ｔａ１,ｔｂ１と、根元部１２ａの縦方向の最小幅との寸法差)が大きくなっている。   As shown in FIG. 6, the first convex portion 12ZB of the front zone B1 extends from the base 16 to the outer edge of the distal end portion 12b (the portion protruding most in the vertical direction) from the first convex portion 12ZA of the front zone A1. The distance from the base 16 to the outer edge of the tip 12b is large. The first projection 12ZB of the front zone B1 has a narrower opening at the base 12a between the base 16 and the outer edge of the tip 12b than the first projection 12ZA of the front zone A1. The first convex portion 12ZA of the front zone A1 is deeper than the first convex portion 12ZB of the front zone B1 from the outer edge of the front end portion 12b toward the base 16 side (the longitudinal direction at the front end portion 12b). (The dimensional difference between the dimensions ta1 and tb1 between the outer edges and the minimum vertical width of the root portion 12a).

図６,図７および図１１に示すように、第２凸部１４は、基部１６に連なる根元部１４ａと、根元部１４ａに支持され、該第２凸部１４の突端を構成する先端部１４ｂとから構成されている。図７に示すように、第２凸部１４の先端部１４ｂの支持面は、該支持面において縦第２溝部２０Ｂに臨む横方向(マットレス１０の短手方向)の外縁から中央部側へ向かうにつれて裏側へ傾く傾斜面を有するテーパ状に形成されている。具体的には、第２凸部１４の先端部１４ｂは、縦方向(マットレス１０の長手方向)の断面形状が、先端部１４ｂの外縁の狭いテーパ部分を除いて、中央部が水平に延在している(図６参照)。第２凸部１４の先端部１４ｂは、該先端部１４ｂの中央部側から横方向へ該先端部１４ｂの外縁に向かうにつれて、表側(基部１６側)へ向けて傾いている。実施例において、第２凸部１４の先端部１４ｂにおいて使用者に接する支持面は、該支持面の中央側から横方向の外縁へ向かうにつれて基部１６側へ傾いているが、縦方向において中央部が水平に延在する形状になっている。第２凸部１４の先端部１４ｂは、縦方向の断面において支持面がほぼ平坦な形状であるが、横方向の断面において先細り形状になっている。第２凸部１４は、該第２凸部１４における縦方向の中央を表裏方向に通る線を挟んで対称な形状であり、該第２凸部１４における横方向の中央を表裏方向に通る線を挟んで対称な形状で形成されている。   As shown in FIGS. 6, 7, and 11, the second convex portion 14 has a root portion 14 a connected to the base portion 16 and a tip portion 14 b supported by the root portion 14 a and forming a protruding end of the second convex portion 14. It is composed of As shown in FIG. 7, the support surface of the distal end portion 14 b of the second convex portion 14 extends from the outer edge of the support surface facing the second vertical groove 20 </ b> B in the lateral direction (the shorter direction of the mattress 10) toward the center. As a result, it is formed in a tapered shape having an inclined surface inclined toward the back side. Specifically, the cross-sectional shape of the distal end portion 14b of the second convex portion 14 in the vertical direction (the longitudinal direction of the mattress 10) has a central portion extending horizontally except for a narrow tapered portion at the outer edge of the distal end portion 14b. (See FIG. 6). The distal end portion 14b of the second convex portion 14 is inclined toward the front side (toward the base portion 16) from the center of the distal end portion 14b toward the outer edge of the distal end portion 14b in the lateral direction. In the embodiment, the support surface in contact with the user at the distal end portion 14b of the second convex portion 14 is inclined toward the base portion 16 from the center side of the support surface toward the outer edge in the lateral direction, but the center portion in the vertical direction is Has a shape extending horizontally. The tip portion 14b of the second convex portion 14 has a substantially flat support surface in a vertical cross section, but has a tapered shape in a horizontal cross section. The second convex portion 14 has a symmetrical shape with a line passing through the vertical center of the second convex portion 14 in the front-back direction, and a line passing the horizontal center of the second convex portion 14 in the front-back direction. Is formed in a symmetrical shape with respect to.

図６および図１１に示すように、第２凸部１４は、先端部１４ｂにおける支持面の外縁が根元部１４ａよりも縦方向(マットレス１０の長手方向)へ張り出して、長手方向において先端部１４ｂと比べて根元部１４ａが細くなる形状で形成されている。第２凸部１４は、縦方向の断面形状が、先端部１４ｂと比べて根元部１４ａが細くなる、基部１６側がくびれた形状で形成されており、横から見た外形が所謂キノコ形状になっている。より具体的には、第２凸部１４は、縦方向の断面形状において、先端部１４ｂの両外縁間で縦方向の最大幅となる。第２凸部１４は、先端部１４ｂの外縁から根元部１４ａの基部１６との付け根側にいくにつれて、徐々に縦方向の幅が狭くなっていき、底側近傍で縦方向の最小幅となる。その後、根元部１４ａがＲ状に丸みを帯びたくびれ形状であることとの関係で、基部１６に達する直前で縦方向の幅が少し大きくなる。このように、第２凸部１４は、縦方向の断面形状において、最大幅を有する先端部１４ｂに比べて最小幅を有する根元部１４ａのほうが細くなって、基部１６側がくびれた形状で形成されている。   As shown in FIG. 6 and FIG. 11, the outer edge of the support surface at the distal end portion 14 b projects in the vertical direction (the longitudinal direction of the mattress 10) from the root portion 14 a, and the second convex portion 14 The base portion 14a is formed in a shape that is narrower than that of the base portion 14a. The second convex portion 14 has a vertical cross-sectional shape in which the base portion 16a is narrower than the distal end portion 14b and the base 16 side is narrowed, and the outer shape when viewed from the side is a so-called mushroom shape. ing. More specifically, the second convex portion 14 has a maximum width in the vertical direction between both outer edges of the distal end portion 14b in the cross-sectional shape in the vertical direction. The second convex portion 14 gradually narrows in the vertical direction as it goes from the outer edge of the tip portion 14b to the base side of the base portion 14a with the base portion 16, and has the minimum vertical width near the bottom side. . Thereafter, the width in the vertical direction slightly increases just before reaching the base portion 16 because the root portion 14a has an R-shaped rounded constricted shape. As described above, the second convex portion 14 is formed in a shape in which the root portion 14a having the minimum width is narrower than the distal end portion 14b having the maximum width in the vertical cross-sectional shape, and the base portion 16 side is narrowed. ing.

図６および図７に示すように、第２凸部１４は、縦方向(マットレス１０の長手方向)において根元部１４ａがくびれた形状であるのに対して、横方向(マットレス１０の短手方向)において根元部１４ａがくびれていない形状である。すなわち、第２凸部１４は、横方向の断面形状が、先端部１４ｂにおける両外縁間の最大幅(横方向における先端部１４ｂの外縁間の距離)と根元部１４ａの幅が同じである。実施例において、第２凸部１４は、縦方向に向く側面が、根元部１４ａよりも先端部１４ｂが傘状に張り出すように、曲面がなだらかに連なるように形状変化し、横方向に向く側面が、根元部１４ａから先端部１４ｂの外縁にかけて直線的に立ち上がっている。   As shown in FIGS. 6 and 7, the second convex portion 14 has a shape in which the root portion 14 a is narrowed in the vertical direction (longitudinal direction of the mattress 10), whereas the second convex portion 14 has a narrowed shape in the horizontal direction (transverse direction of the mattress 10). ) Has a shape in which the root portion 14a is not constricted. That is, the second convex portion 14 has the same lateral cross-sectional shape as the maximum width between both outer edges at the distal end portion 14b (the distance between the outer edges of the distal end portion 14b in the lateral direction) and the width of the root portion 14a. In the embodiment, the second convex portion 14 changes its shape such that the side surface that faces in the vertical direction is such that the tip portion 14b projects in an umbrella shape rather than the root portion 14a, so that the curved surface is smoothly connected, and faces in the horizontal direction. The side surface rises linearly from the root portion 14a to the outer edge of the tip portion 14b.

図６および図１１に示すように、縦方向(マットレス１０の長手方向)に隣り合う第２凸部１４,１４によって形作られる横第２溝部２０Ａは、互いに近づくように張り出した先端部１４ｂ,１４ｂの外縁同士で挟まれた開口側と比べて、先端部１４ｂよりも凹んだ根元部１４ａ,１４ａ同士で挟まれた底側が広く形成される。なお、横第２溝部２０Ａの開口(溝幅ｍａ２,ｍｂ２,ｂｍ２)は、縦方向に隣り合う第２凸部１４,１４において向かい合う先端部１４ｂ,１４ｂの外縁が最も近接する位置を指している。すなわち、横第２溝部２０Ａは、底側よりも狭い部分が開口側に設けられて、開口側と比べて底側が縦方向において広く形成されている。図７に示すように、横方向に隣り合う第２凸部１４,１４によって形作られる縦第２溝部２０Ｂは、先端部１４ｂ,１４ｂの外縁同士で挟まれる開口側から根元部１４ａ,１４ａ同士で挟まれる底側にかけて、基本的に同じ幅で形成されている。第２凸部１４は、縦方向においてくびれた根元部１４ａによって縦方向へ変形し易く構成されているが、横方向において根元部１４ａがくびれていない、またはくびれが小さいことで横方向へ変形し難く構成されている。   As shown in FIGS. 6 and 11, the second horizontal groove portions 20A formed by the second convex portions 14, 14 adjacent in the vertical direction (longitudinal direction of the mattress 10) have front end portions 14 b, 14 b projecting closer to each other. As compared with the opening side sandwiched by the outer edges of the base portions, the bottom side sandwiched by the root portions 14a, 14a that are recessed from the tip portion 14b is formed wider. The opening (groove width ma2, mb2, bm2) of the second horizontal groove portion 20A indicates the position where the outer edge of the front end portions 14b, 14b facing each other in the second convex portions 14, 14 vertically adjacent to each other is closest. . That is, the horizontal second groove 20A has a portion narrower than the bottom side provided on the opening side, and the bottom side is formed wider in the vertical direction than the opening side. As shown in FIG. 7, the second vertical groove 20B formed by the second convex portions 14 adjacent to each other in the horizontal direction is formed between the roots 14a and 14a from the opening side sandwiched between the outer edges of the distal ends 14b and 14b. It is basically formed with the same width toward the sandwiched bottom side. The second convex portion 14 is configured to be easily deformed in the vertical direction by the root portion 14a constricted in the vertical direction, but is deformed in the horizontal direction because the root portion 14a is not constricted in the horizontal direction or the constriction is small. It is difficult to configure.

図６に示すように、第１凸部１２の先端部１２ｂは、縦方向(マットレス１０の長手方向)において中央部が膨らんだ形状であるのに対して、第２凸部１４の先端部１４ｂは、縦方向において中央部が平らになっている。また、第１凸部１２の先端部１２ｂおよび第２凸部１４の先端部１４ｂは、横方向(マットレス１０の短手方向)において中央部が膨らんだ形状が共通している。第２凸部１４は、先端部１４ｂに形成された縦方向の傾斜面の範囲が、第１凸部１２の先端部１２ｂに形成された縦方向の傾斜面の範囲よりも狭く設定されている。このように、マットレス１０は、表面の第１凸部１２が裏面の第２凸部１４よりも先細り形状であることで、裏面よりも表面の体圧分散性を向上させている。また、マットレス１０は、第２凸部１４の縦方向の傾斜が第１凸部１２の縦方向の傾斜よりも狭いので、裏面を表面よりも使用者が縦方向へずれ難くすることができる。従って、マットレス１０は、表面を比較的長時間寝ている場合に使用すると好適であり、回復期にあるような比較的動きがある場合に裏面を使用すると好適である。   As shown in FIG. 6, the distal end portion 12 b of the first convex portion 12 has a shape in which the central portion expands in the vertical direction (the longitudinal direction of the mattress 10), whereas the distal end portion 14 b of the second convex portion 14 has Has a flat central portion in the vertical direction. Further, the distal end portion 12b of the first convex portion 12 and the distal end portion 14b of the second convex portion 14 have a common shape in which the central portion swells in the lateral direction (the short direction of the mattress 10). The second convex portion 14 is set so that the range of the vertical inclined surface formed at the distal end portion 14 b is smaller than the range of the vertical inclined surface formed at the distal end portion 12 b of the first convex portion 12. . As described above, in the mattress 10, the first convex portion 12 on the front surface is tapered more than the second convex portion 14 on the rear surface, so that the body pressure dispersibility on the front surface is improved more than on the rear surface. Further, in the mattress 10, since the vertical inclination of the second convex portion 14 is smaller than the vertical inclination of the first convex portion 12, it is possible for the user to make it harder for the user to shift the rear surface in the vertical direction than the front surface. Therefore, it is preferable to use the mattress 10 when the front surface is sleeping for a relatively long time, and it is preferable to use the back surface when there is relatively movement such as in a recovery period.

図６に示すように、表ゾーンＡ１を構成する第１凸部１２(区別する場合は、第１凸部１２ＺＡという。)の縦方向の寸法ｔａ１は、表ゾーンＢ１を構成する第１凸部１２(区別する場合は、第１凸部１２ＺＢという。)の縦方向の寸法ｔｂ１よりも大きく設定されている(ｔａ１＞ｔｂ１)。同様に、裏ゾーンＡ２を構成する第２凸部１４(区別する場合は、第２凸部１４ＺＡという。)の縦方向の寸法ｔａ２は、裏ゾーンＢ２を構成する第２凸部１４(区別する場合は、第２凸部１４ＺＢという。)の縦方向の寸法ｔｂ２よりも大きく設定されている(ｔａ２＞ｔｂ２)。図７に示すように、表ゾーンＡ１を構成する第１凸部１２ＺＡと、表ゾーンＢ１を構成する第１凸部１２ＺＢとは、横方向の寸法ｙ１が同じである。同様に、裏ゾーンＡ２を構成する第２凸部１４ＺＡと、裏ゾーンＢ２を構成する第２凸部１４ＺＢとは、横方向の寸法ｙ２が同じである。マットレス１０は、表裏の何れの面においても、ゾーンＡの凸部１２ＺＡ(１４ＺＡ)がゾーンＢの凸部１２ＺＢ(１４ＺＢ)よりも縦方向の寸法が大きいが(ｔａ１＞ｔｂ１,ｔａ２＞ｔｂ２)、ゾーン(ゾーンＡまたはゾーンＢ)の違いによって凸部１２,１４の横方向の寸法ｙ１,ｙ２は変わらない。このように、ゾーンＢには、ゾーンＡよりも縦方向に小さい寸法の凸部１２,１４がゾーンＡよりも縦方向に密に配置されており、ゾーンＢにおいて、ゾーンＡよりも多くの凸部１２,１４によって荷重を支持し得るように構成されている。マットレス１０は、ゾーンＢにおいて比較的多くの凸部１２,１４によって荷重を受けるので当該ゾーンＢでの体圧分散性が良好であり、ゾーンＡにおいて比較的大きい凸部１２,１４によって荷重を受けて当該荷重を適切に保持し得る。なお、凸部１２,１４における縦方向の寸法ｔａ１,ｔｂ１,ｔａ２,ｔｂ２とは、縦方向における先端部１２ｂ,１４ｂの外縁間の幅をいい、凸部１２,１４における横方向の寸法ｙ１,ｙ２とは、横方向における先端部１２ｂ,１４ｂの外縁間の幅をいう。   As shown in FIG. 6, the vertical dimension ta1 of the first convex portion 12 constituting the front zone A1 (when distinguished, referred to as the first convex portion 12ZA) is the first convex portion constituting the front zone B1. 12 (when distinguished, the first convex portion 12ZB) is set to be larger than the vertical dimension tb1 (ta1> tb1). Similarly, the dimension ta2 in the vertical direction of the second convex portion 14 (which is referred to as a second convex portion 14ZA when making a distinction) constituting the back zone A2 is the second convex portion 14 (which makes a distinction) constituting the back zone B2. In this case, the vertical dimension tb2 of the second convex portion 14ZB) is set to be larger (ta2> tb2). As shown in FIG. 7, the first protrusion 12ZA forming the front zone A1 and the first protrusion 12ZB forming the front zone B1 have the same horizontal dimension y1. Similarly, the second protrusion 14ZA forming the back zone A2 and the second protrusion 14ZB forming the back zone B2 have the same horizontal dimension y2. The mattress 10 has a configuration in which the convex portion 12ZA (14ZA) of the zone A has a larger vertical dimension than the convex portion 12ZB (14ZB) of the zone B (ta1> tb1, ta2> tb2). The lateral dimensions y1 and y2 of the projections 12 and 14 do not change depending on the difference between the zones (zone A or zone B). As described above, in the zone B, the convex portions 12 and 14 having dimensions smaller in the vertical direction than the zone A are densely arranged in the vertical direction than the zone A. The parts 12 and 14 are configured to be able to support a load. Since the mattress 10 receives a load in the zone B by a relatively large number of projections 12 and 14, the body pressure dispersibility in the zone B is good, and the mattress 10 receives a load in the zone A by the relatively large projections 12 and 14. Thus, the load can be appropriately held. The vertical dimensions ta1, tb1, ta2, tb2 of the projections 12, 14 refer to the width between the outer edges of the distal ends 12b, 14b in the vertical direction, and the horizontal dimensions y1, y2 refers to the width between the outer edges of the distal ends 12b and 14b in the lateral direction.

図６に示すように、表ゾーンＡ１を構成する第１凸部１２ＺＡは、表ゾーンＢ１を構成する第１凸部１２ＺＢよりも、先端部１２ｂと根元部１２ａとの縦方向(マットレス１０の長手方向)の寸法差が大きく設定されている。すなわち、表ゾーンＡ１の第１凸部１２ＺＡは、表ゾーンＢ１の第１凸部１２ＺＢよりも根元側のくびれが深く形成されている。これにより、マットレス１０の表面は、表ゾーンＡ１よりも表ゾーンＢ１が縦方向へ変形し難くなっている。図６に示すように、裏ゾーンＡ２を構成する第２凸部１４ＺＡと、裏ゾーンＢ２を構成する第２凸部１４ＺＢとは、先端部１４ｂと根元部１４ａとの縦方向の寸法差が同じである。すなわち、裏ゾーンＡ２の第２凸部１４ＺＡと裏ゾーンＢ２の第２凸部１４ＺＢとは、根元側のくびれの深さが同じである。従って、マットレス１０の裏面は、第２凸部１４のくびれの深さの相違による裏ゾーンＡ２,Ｂ２の縦方向の変形し易さに差がない。   As shown in FIG. 6, the first convex portion 12ZA forming the front zone A1 is longer than the first convex portion 12ZB forming the front zone B1 in the longitudinal direction (the longitudinal direction of the mattress 10) between the tip portion 12b and the root portion 12a. Direction) is set large. That is, the first convex portion 12ZA of the front zone A1 has a deeper neck at the base side than the first convex portion 12ZB of the front zone B1. Thereby, on the surface of the mattress 10, the front zone B1 is less likely to be deformed in the vertical direction than the front zone A1. As shown in FIG. 6, the second convex portion 14ZA forming the back zone A2 and the second convex portion 14ZB forming the back zone B2 have the same vertical dimension difference between the tip portion 14b and the root portion 14a. It is. That is, the second convex portion 14ZA of the back zone A2 and the second convex portion 14ZB of the back zone B2 have the same constriction depth at the root side. Therefore, on the back surface of the mattress 10, there is no difference in the ease of vertical deformation of the back zones A2 and B2 due to the difference in the depth of the constriction of the second convex portion 14.

図６に示すように、マットレス１０は、表面の表ゾーンＡ１において縦方向(マットレス１０の長手方向)に隣り合う第１凸部１２ＺＡ,１２ＺＡの間隔ｍａ１が、表面の表ゾーンＢ１において縦方向に隣り合う第１凸部１２ＺＢ,１２ＺＢの間隔ｍｂ１よりも広く設定されている(ｍａ１＞ｍｂ１)。また、マットレス１０は、表面の表ゾーンＡ１と表ゾーンＢ１との境界において縦方向に隣り合う第１凸部１２ＺＡ,１２ＺＢの間隔ｂｍ１が、表ゾーンＢ１において縦方向に隣り合う第１凸部１２ＺＢ,１２ＺＢの間隔ｍｂ１よりも広く設定されている(ｂｍ１＞ｍｂ１)。図７に示すように、マットレス１０は、表面において横方向(マットレス１０の短手方向)に隣り合う第１凸部１２,１２の間隔ｎ１が同じである。マットレス１０の表面は、表ゾーンＡ１における横第１溝部１８Ａの溝幅ｍａ１が、表ゾーンＢ１における横第１溝部１８Ａの溝幅ｍｂ１よりも大きい。また、マットレス１０の表面は、表ゾーンＡ１と表ゾーンＢ１との境界における横第１溝部１８Ａの溝幅ｂｍ１が、表ゾーンＢ１における横第１溝部１８Ａの溝幅ｍｂ１よりも大きくなっている。実施例において、表ゾーンＡ１において縦方向に隣り合う第１凸部１２ＺＡ,１２ＺＡの間隔ｍａ１と、前記境界において縦方向に隣り合う第１凸部１２ＺＡ,１２ＺＢの間隔ｂｍ１とは同じである(ｍａ１＝ｂｍ１)。マットレス１０の表面は、縦第１溝部１８Ｂの溝幅ｎ１が何れも同じである。実施例では、表ゾーンＡ１において縦方向に隣り合う第１凸部１２ＺＡ,１２ＺＡの間隔ｍａ１および前記境界において縦方向に隣り合う第１凸部１２ＺＡ,１２ＺＢの間隔ｂｍ１が、横方向に隣り合う第１凸部１２,１２の間隔ｎ１よりも広い(ｍａ１＝ｂｍ１＞ｎ１)。表ゾーンＢ１において縦方向に隣り合う第１凸部１２ＺＢ,１２ＺＢの間隔ｍｂ１と、横方向に隣り合う第１凸部１２,１２の間隔ｎ１とが、同じに設定されている(ｍｂ１＝ｎ１)。   As shown in FIG. 6, the mattress 10 is arranged such that an interval ma1 between the first convex portions 12ZA and 12ZA adjacent in the vertical direction (longitudinal direction of the mattress 10) in the front surface zone A1 on the front surface is vertical in the front surface zone B1. It is set wider than the interval mb1 between the adjacent first convex portions 12ZB, 12ZB (ma1> mb1). In the mattress 10, the interval bm1 between the first convex portions 12ZA and 12ZB vertically adjacent to each other at the boundary between the front zone A1 and the front zone B1 on the surface is such that the first convex portions 12ZB vertically adjacent to each other in the front zone B1. , 12ZB is set wider than the interval mb1 (bm1> mb1). As shown in FIG. 7, the mattress 10 has the same interval n1 between the first convex portions 12, 12 that are adjacent to each other in the lateral direction (the short direction of the mattress 10) on the surface. On the surface of the mattress 10, the groove width ma1 of the first horizontal groove portion 18A in the front zone A1 is larger than the groove width mb1 of the first horizontal groove portion 18A in the front zone B1. On the surface of the mattress 10, the groove width bm1 of the first horizontal groove portion 18A at the boundary between the front zone A1 and the front zone B1 is larger than the groove width mb1 of the first horizontal groove portion 18A in the front zone B1. In the embodiment, the space ma1 between the first protrusions 12ZA and 12ZA vertically adjacent in the front zone A1 is the same as the space bm1 between the first protrusions 12ZA and 12ZB vertically adjacent at the boundary (ma1). = Bm1). The surface of the mattress 10 has the same groove width n1 of the first vertical groove portion 18B. In the embodiment, in the front zone A1, the space ma1 between the first protrusions 12ZA and 12ZA vertically adjacent to each other and the space bm1 between the first protrusions 12ZA and 12ZB vertically adjacent to each other at the boundary are the same as the width adjacent to each other in the horizontal direction. It is wider than the interval n1 between the one convex portions 12, 12 (ma1 = bm1> n1). In the front zone B1, the interval mb1 between the vertically adjacent first convex portions 12ZB, 12ZB and the interval n1 between the laterally adjacent first convex portions 12, 12 are set to be the same (mb1 = n1). .

図６に示すように、マットレス１０は、裏面の裏ゾーンＡ２において縦方向(マットレス１０の長手方向)に隣り合う第２凸部１４ＺＡ,１４ＺＡの間隔ｍａ２と、裏面の裏ゾーンＢ２において縦方向に隣り合う第２凸部１４ＺＢ,１４ＺＢの間隔ｍｂ２とが、同じに設定されている(ｍａ２＝ｍｂ２)。同様に、マットレス１０は、裏面の裏ゾーンＡ２と裏ゾーンＢ２との境界において縦方向に隣り合う第２凸部１４ＺＡ,１４ＺＢの間隔ｂｍ２が、裏ゾーンＡ２および裏ゾーンＢ２において縦方向に隣り合う第２凸部１４,１４の間隔ｍａ２,ｍｂ２と同じである。また、マットレス１０は、裏面において横方向(マットレス１０の短手方向)に隣り合う第２凸部１４,１４の間隔ｎ２が同じである。このように、マットレス１０は、裏面において、横第２溝部２０Ａの溝幅ｍａ２,ｍｂ２,ｂｍ２が、裏ゾーンＡ２および裏ゾーンＢ２にかかわらず何れも同じであり、縦第２溝部２０Ｂの溝幅ｎ２が何れも同じである。実施例では、マットレス１０の裏面において、縦方向に隣り合う第２凸部１４,１４の間隔ｍａ２,ｍｂ２,ｂｍ２が、横方向に隣り合う第２凸部１４,１４の間隔ｎ２よりも広く設定されている(ｍａ２＝ｍｂ２＝ｂｍ２＞ｎ２)。なお、隣り合う凸部１２,１２,１４,１４の間隔(溝部１８,２０の溝幅)ｍａ１,ｍｂ１,ｂｍ１,ｎ１,ｍａ２,ｍｂ２,ｂｍ２,ｎ２は、隣り合う先端部１２ｂ,１２ｂ,１４ｂ,１４ｂの外縁間の寸法をいう。   As shown in FIG. 6, the mattress 10 has an interval ma2 between the second convex portions 14ZA, 14ZA adjacent in the vertical direction (longitudinal direction of the mattress 10) in the back zone A2 on the back surface, and a vertical direction in the back zone B2 on the back surface. The interval mb2 between the adjacent second convex portions 14ZB, 14ZB is set to be the same (ma2 = mb2). Similarly, in the mattress 10, the interval bm2 between the second convex portions 14ZA and 14ZB vertically adjacent to each other at the boundary between the back zone A2 and the back zone B2 on the back surface is vertically adjacent to each other in the back zone A2 and the back zone B2. It is the same as the interval ma2, mb2 between the second convex portions 14, 14. In the mattress 10, the interval n2 between the second protrusions 14 adjacent to each other in the lateral direction (the short direction of the mattress 10) on the back surface is the same. As described above, in the mattress 10, the groove width ma2, mb2, bm2 of the second horizontal groove 20A is the same regardless of the rear zone A2 and the rear zone B2 on the rear surface, and the groove width of the vertical second groove 20B is different. n2 is the same. In the embodiment, on the back surface of the mattress 10, the intervals ma2, mb2, bm2 between the vertically adjacent second convex portions 14, 14 are set to be wider than the intervals n2 between the laterally adjacent second convex portions 14, 14. (Ma2 = mb2 = bm2> n2). In addition, the spacing between the adjacent convex portions 12, 12, 14, 14 (groove width of the groove portions 18, 20) ma1, mb1, bm1, n1, ma2, mb2, bm2, n2 are adjacent tip portions 12b, 12b, 14b. , 14b.

図４に示すように、マットレス１０は、表面の表ゾーンＡ１および裏面の裏ゾーンＡ２が、基部１６を挟んだ表裏において少なくとも一部が重なり、表面の表ゾーンＢ１および裏面の裏ゾーンＢ２が、基部１６を挟んだ表裏において少なくとも一部が重なるように配置されている。実施例では、基部１６を挟んだ表裏において、対応する表ゾーンＡ１および裏ゾーンＡ２の縦方向(マットレス１０の長手方向)の範囲が異なると共に、対応する表ゾーンＢ１および裏ゾーンＢ２の縦方向の範囲が異なっている。マットレス１０は、横第１溝部１８Ａと横第２溝部２０Ａとが、表裏に重なるように配置されたり、縦方向にずらして配置されたりして、不規則な関係にあり、第１凸部１２と第２凸部１４とが縦方向へずれている。図５に示すように、マットレス１０は、縦第１溝部１８Ｂおよび縦第２溝部２０Ｂが横方向(マットレス１０の短手方向)へずらして配置されており、実施例では、マットレス１０の一面の凸部１２,１４の横方向中央に対応して、マットレス１０の他面の縦溝部２０Ｂ,１８Ｂが配置されている。すなわち、マットレス１０は、第１凸部１２と第２凸部１４とが基部１６を挟んで横方向にずらして一部重なるように配置され、また、縦第１溝部１８Ｂと縦第２溝部２０Ｂとが基部１６を挟んで横方向へずらして重ならないように配置されている。   As shown in FIG. 4, in the mattress 10, the front surface zone A1 and the back surface zone A2 of the back surface overlap at least partially on the front and back surfaces across the base portion 16, and the front surface zone B1 and the back surface zone B2 of the back surface It is arranged so that at least a part may be overlapped on the front and back with the base 16 interposed therebetween. In the embodiment, on the front and back sides sandwiching the base 16, the range of the corresponding front zone A1 and the back zone A2 in the vertical direction (the longitudinal direction of the mattress 10) is different, and the corresponding front zone B1 and the back zone B2 in the vertical direction are different. The range is different. The mattress 10 has an irregular relationship in which the first horizontal groove portion 18A and the second horizontal groove portion 20A are arranged so as to overlap each other on the front and back or are displaced in the vertical direction. And the second protrusion 14 are displaced in the vertical direction. As shown in FIG. 5, the mattress 10 has a first vertical groove 18 </ b> B and a second vertical groove 20 </ b> B displaced in the horizontal direction (the short direction of the mattress 10). The vertical grooves 20B, 18B on the other surface of the mattress 10 are arranged corresponding to the centers of the protrusions 12, 14 in the horizontal direction. That is, the mattress 10 is arranged such that the first convex portion 12 and the second convex portion 14 are partially shifted from each other across the base 16 so as to partially overlap, and the first vertical groove portion 18B and the second vertical groove portion 20B are arranged. Are arranged so as not to overlap with each other by being shifted laterally across the base portion 16.

図５に示すように、縦方向(マットレス１０の長手方向)に延在する複数の縦第２溝部２０Ｂの中には、第１凸部１２に対応する位置に設けられて、該第１凸部１２の内側へ達するように形成された深縦第２溝部２０Ｂａがある。マットレス１０には、横方向(マットレス１０の短手方向)の中央部と、使用者の肩辺りに対応する左右の側部のそれぞれの合計３箇所に、深縦第２溝部２０Ｂａが設けられている。深縦第２溝部２０Ｂａは、マットレス１０の厚み(第１凸部１２の先端と第２凸部１４の先端との距離)の７０％〜８０％の深さで形成されており、残部の軟質発泡体の厚みを薄くすることで、マットレス１０を横方向へ曲げ易くしている。なお、実施例において、深縦第２溝部２０Ｂａ以外の通常の第２溝部２０や第１溝部１８は、マットレス１０の厚みの５０％以下の深さになっている。   As shown in FIG. 5, a plurality of vertical second grooves 20 </ b> B extending in the vertical direction (the longitudinal direction of the mattress 10) are provided at positions corresponding to the first convex portions 12, and There is a deep vertical second groove portion 20Ba formed so as to reach the inside of the portion 12. The mattress 10 is provided with deep vertical second groove portions 20Ba at a total of three places: a central portion in the horizontal direction (the short direction of the mattress 10), and left and right sides corresponding to around the user's shoulder. I have. The deep vertical second groove 20Ba is formed at a depth of 70% to 80% of the thickness of the mattress 10 (the distance between the tip of the first protrusion 12 and the tip of the second protrusion 14), and the remaining portion is soft. By reducing the thickness of the foam, the mattress 10 is easily bent in the lateral direction. In the embodiment, the normal second groove 20 and the first groove 18 other than the deep vertical second groove 20Ba have a depth of 50% or less of the thickness of the mattress 10.

図６に示すように、表ゾーンＡ１または表ゾーンＡ１,Ｂ１間の境界において縦方向(マットレス１０の長手方向)に隣り合う第１凸部１２,１２の間隔は、裏ゾーンＡ２および裏ゾーンＢ２において縦方向に隣り合う第２凸部１４,１４の間隔よりも広く設定されている。表ゾーンＢ１において縦方向に隣り合う第１凸部１２ＺＢ,１２ＺＢの間隔は、裏ゾーンＡ２および裏ゾーンＢ２において縦方向に隣り合う第２凸部１４,１４の間隔よりも狭く設定されている。   As shown in FIG. 6, at the boundary between the front zone A1 or the front zones A1, B1, the interval between the first convex portions 12, 12 adjacent in the vertical direction (the longitudinal direction of the mattress 10) is equal to the back zone A2 and the back zone B2. Is set to be wider than the interval between the second protrusions 14 adjacent to each other in the vertical direction. The interval between the first convex portions 12ZB, 12ZB vertically adjacent in the front zone B1 is set smaller than the interval between the second convex portions 14, 14 vertically adjacent in the back zone A2 and the back zone B2.

図４に示すように、マットレス１０は、縦方向(マットレス１０の長手方向)の領域に応じて、表ゾーンＡ１および表ゾーンＡ１に対応する裏ゾーンＡ２と、表ゾーンＢ１および表ゾーンＢ１に対応する裏ゾーンＢ２とに区分されている。第２凸部１４は、対応するゾーンＡ,Ｂ同士の関係において、第１凸部１２よりも縦方向の寸法が大きく設定されている。具体的には、裏ゾーンＡ２の第２凸部１４ＺＡは、基部１６を表裏に挟んで対応する表ゾーンＡ１の第１凸部１２ＺＡよりも縦方向へ大きな寸法で形成されている。また、裏ゾーンＢ２の第２凸部１４ＺＢは、基部１６を表裏に挟んで対応する表ゾーンＢ１の第１凸部１２ＺＢよりも縦方向へ大きな寸法で形成されている。   As shown in FIG. 4, the mattress 10 corresponds to the front zone A1 and the back zone A2 corresponding to the front zone A1, and the front zone B1 and the front zone B1 according to the region in the longitudinal direction (the longitudinal direction of the mattress 10). Back zone B2. The dimension of the second convex portion 14 in the vertical direction is set to be larger than that of the first convex portion 12 in the relationship between the corresponding zones A and B. Specifically, the second convex portion 14ZA of the back zone A2 is formed to have a size larger in the vertical direction than the corresponding first convex portion 12ZA of the front zone A1 with the base 16 sandwiched between the front and back. Further, the second convex portion 14ZB of the back zone B2 is formed to have a dimension in the vertical direction larger than the corresponding first convex portion 12ZB of the front zone B1 with the base portion 16 interposed therebetween.

図１〜図５に示すように、マットレス１０には、ゾーンＡおよびゾーンＢの周りを囲うように配置された支持部２２,２４によって構成され、ゾーンＡおよびゾーンＢよりも荷重支持力が高く設定された支持ゾーンが設けられている。マットレス１０の表面および裏面には、ゾーンＡまたはゾーンＢを横方向に挟む両方の横縁(縦方向(マットレス１０の長手方向)に沿う縁辺)と、ゾーンＡおよびゾーンＢを縦方向に挟む両方の縦縁(横方向(マットレス１０の短手方向)に沿う縁辺)とに、支持ゾーンが設けられている。マットレス１０の表面における横縁に設けられた表支持部２２は、横方向に並ぶ第１凸部１２と縦方向の寸法が同じである一方で、当該第１凸部１２よりも横方向の寸法が大きく形成されている。縦方向に隣り合う表支持部２２,２２の間には、横第１溝部１８Ａがあり、マットレス１０の横縁に設けられた表支持部２２は横から見た形状が横方向に隣り合う第１凸部１２と同じである。縦縁に設けられた表支持部２２は、縦方向に並ぶ第１凸部１２と横方向の寸法が同じである一方で、当該第１凸部１２よりも縦方向の寸法が大きく形成されている。横方向に隣り合う表支持部２２,２２の間には、縦第１溝部１８Ｂがあり、マットレス１０の縦縁に設けられた表支持部２２は縦から見た形状が縦方向に隣り合う第１凸部１２と同じである。   As shown in FIGS. 1 to 5, the mattress 10 is configured by supporting portions 22 and 24 arranged so as to surround the zone A and the zone B, and has a higher load supporting force than the zones A and B. A set support zone is provided. On both the front and back surfaces of the mattress 10, both horizontal edges (edges along the vertical direction (longitudinal direction of the mattress 10)) sandwiching the zone A or the zone B, and both the edges sandwiching the zone A and the zone B in the vertical direction And a support zone is provided at the vertical edge (the edge along the horizontal direction (the short side direction of the mattress 10)). The front support portion 22 provided on the horizontal edge on the surface of the mattress 10 has the same vertical dimension as the first convex portions 12 arranged in the horizontal direction, but has a lateral dimension larger than the first convex portions 12. Are formed large. There is a first horizontal groove portion 18A between the vertically adjacent front support portions 22 and 22, and the front support portion 22 provided on the horizontal edge of the mattress 10 has a laterally adjacent first support groove 22A. It is the same as one convex portion 12. The front support portion 22 provided at the vertical edge has the same horizontal dimension as the first convex portions 12 arranged in the vertical direction, but has a larger vertical dimension than the first convex portions 12. I have. There is a first vertical groove portion 18B between the front support portions 22 adjacent to each other in the horizontal direction, and the front support portion 22 provided on the vertical edge of the mattress 10 has a vertically-adjacent first support portion 22B. It is the same as one convex portion 12.

図１〜図５に示すように、マットレス１０の裏面における横縁に設けられた裏支持部２４は、横方向に並ぶ第２凸部１４と縦方向の寸法が同じである一方で、当該第２凸部１４よりも横方向の寸法が大きく形成されている。縦方向に隣り合う裏支持部２４,２４の間には、横第２溝部２０Ａがあり、マットレス１０の横縁に設けられた裏支持部２４は横から見た形状が横方向に隣り合う第２凸部１４と同じである。縦縁に設けられた裏支持部２４は、縦方向に並ぶ第２凸部１４と横方向の寸法が同じである一方で、当該第２凸部１４よりも縦方向の寸法が大きく形成されている。横方向に隣り合う裏支持部２４,２４の間には、縦第２溝部２０Ｂがあり、マットレス１０の縦縁に設けられた裏支持部２４は縦から見た形状が縦方向に隣り合う第２凸部１４と同じである。このように、マットレス１０は、表裏の何れの面においても、縁部に凸部１２,１４よりも大きい支持部２２,２４を配置してあるので、縁部における荷重の支持力が高くなっている。従って、使用者がマットレス１０にのるときやマットレス１０から立ち上がるときに縁部に腰を掛けた際に、使用者の荷重を過剰に沈み込まないように好適に支持し、座ったり、立ち上がったりするなどを行い易くすることができる。また、使用者がマットレス１０に寝たとき、比較的硬い支持部２２,２４によってホールド性を高めることができる。   As shown in FIGS. 1 to 5, the back support portion 24 provided at the horizontal edge on the back surface of the mattress 10 has the same vertical dimension as the second convex portions 14 arranged in the horizontal direction, The horizontal dimension is formed larger than the two convex portions 14. There is a horizontal second groove portion 20A between the vertically adjacent back support portions 24, 24, and the back support portion 24 provided on the horizontal edge of the mattress 10 has a shape as viewed from the side. Same as the two convex portions 14. The back support portion 24 provided at the vertical edge has the same horizontal dimension as the second convex portions 14 arranged in the vertical direction, but is formed to have a larger vertical dimension than the second convex portions 14. I have. There is a vertical second groove portion 20B between the horizontally adjacent back support portions 24, 24, and the back support portion 24 provided on the vertical edge of the mattress 10 has a vertically adjacent shape in which the shape viewed from the vertical side is vertically adjacent. Same as the two convex portions 14. As described above, since the mattress 10 has the support portions 22 and 24 larger than the convex portions 12 and 14 at the edges on both the front and back surfaces, the support force of the load at the edges increases. I have. Therefore, when the user sits on the edge when the user rides on the mattress 10 or rises from the mattress 10, the user appropriately supports the load so as not to sink excessively, and sits or stands up. Can be easily performed. Further, when the user lies on the mattress 10, the holding properties can be enhanced by the relatively hard support portions 22, 24.

マットレス１０は、表面が凹になるように縦方向に曲げると、表側において縦方向(マットレス１０の長手方向)に隣り合う第１凸部１２,１２が相対的に近づく一方、裏側において縦方向に隣り合う第２凸部１４,１４が相対的に離れて、第１凸部１２,１２同士が当たると曲げ変形が妨げられる(図１０の一点鎖線参照)。反対に、マットレス１０は、裏面が凹になるように縦方向に曲げると、裏側において縦方向に隣り合う第２凸部１４,１４が相対的に近づく一方、表側において縦方向に隣り合う第１凸部１２,１２が相対的に離れて、第２凸部１４,１４同士が当たると曲げ変形が妨げられる(図１１の一点鎖線参照)。このように、マットレス１０は、表裏のそれぞれに横方向(マットレス１０の短手方向)へ延在する溝部１８Ａ,２０Ａによって縦方向へ曲げ易くなっており(図８参照)、表裏のそれぞれに縦方向へ延在する溝部１８Ｂ,２０Ｂによって横方向へ曲げ易くなっている(図９参照)。マットレス１０は、第１凸部１２の先端部１２ｂが、横方向に延在する溝部１８Ａ,２０Ａに臨む外縁から中央部に向けて傾斜面を有するテーパ形状であるから、表側が凹になるように縦方向に曲げた際に、縦方向に並ぶ第１凸部１２,１２が互いに干渉し難くなり、縦方向へ大きく曲げることができる。同様に、マットレス１０は、第１凸部１２の先端部１２ｂおよび第２凸部１４の先端部１４ｂが、縦方向に延在する溝部１８Ｂ,２０Ｂに臨む外縁から中央部に向けて傾斜面を有するテーパ形状であるから、表側または裏側が凹になるように横方向に曲げた際に、横方向に並ぶ第１凸部１２,１２または第２凸部１４,１４が互いに干渉し難くなり、横方向へ大きく曲げることができる。   When the mattress 10 is bent in the vertical direction so that the surface becomes concave, the first convex portions 12 and 12 adjacent to each other in the vertical direction (longitudinal direction of the mattress 10) on the front side relatively approach, while on the rear side, the vertical direction. When the adjacent second convex portions 14 and 14 are relatively separated from each other and the first convex portions 12 and 12 contact each other, bending deformation is hindered (see a dashed line in FIG. 10). Conversely, when the mattress 10 is bent in the vertical direction so that the back surface is concave, the second protrusions 14 and 14 that are vertically adjacent on the back side are relatively close to each other, while the first protrusions that are vertically adjacent on the front side are relatively close. When the convex portions 12, 12 are relatively separated from each other and the second convex portions 14, 14 are in contact with each other, bending deformation is hindered (see a dashed line in FIG. 11). As described above, the mattress 10 is easily bent in the vertical direction by the grooves 18A and 20A extending in the horizontal direction (the short direction of the mattress 10) on the front and back sides (see FIG. 8). The grooves 18B and 20B extending in the direction facilitate bending in the lateral direction (see FIG. 9). The mattress 10 has a tapered shape in which the front end portion 12b of the first convex portion 12 has an inclined surface from the outer edge facing the grooves 18A, 20A extending in the lateral direction toward the central portion, so that the front side is concave. When it is bent in the vertical direction, the first projections 12, 12 arranged in the vertical direction are less likely to interfere with each other, and can be largely bent in the vertical direction. Similarly, in the mattress 10, the tip 12 b of the first protrusion 12 and the tip 14 b of the second protrusion 14 are inclined from the outer edge facing the vertically extending grooves 18 B, 20 B toward the center. Since it has a tapered shape, when it is bent in the lateral direction so that the front side or the back side is concave, the first convex portions 12, 12 or the second convex portions 14, 14 arranged in the horizontal direction hardly interfere with each other, Can be bent significantly in the lateral direction.

マットレス１０は、表ゾーンＡ１において縦方向(マットレス１０の長手方向)に隣り合う第１凸部１２ＺＡ,１２ＺＡの間隔、並びに表ゾーンＡ１と表ゾーンＢ１との境界において縦方向に隣り合う第１凸部１２ＺＡ,１２ＺＢの間隔が、表ゾーンＢ１において縦方向に隣り合う第１凸部１２ＺＢ,１２ＺＢの間隔よりも広い。マットレス１０は、表ゾーンＢ１の第１凸部１２ＺＢと比べて表ゾーンＡ１において第１凸部１２ＺＡの縦寸法が大きいが、表ゾーンＡ１において横第１溝部１８Ａが広いので、表ゾーンＡ１においてマットレス１０を縦方向へ曲げ易くすることができる。また、表ゾーンＡ１と表ゾーンＢ１との境界は、マットレス１０を縦方向へ曲げる際の起点になることが多いので、境界に延在する横第１溝部１８Ａが広いと、可変ベッドに対応してマットレス１０が縦方向へ曲がり易くなる。そして、表ゾーンＢ１は、表ゾーンＡ１よりも縦方向へ隣り合う第１凸部１２ＺＢ,１２ＺＢの間隔が狭いが、第１凸部１２ＺＢの縦方向寸法が小さく横第１溝部１８Ａのピッチが細かいので、表ゾーンＢ１においても縦方向への曲げ易さを保つことができる。   The mattress 10 has a space between the first convex portions 12ZA and 12ZA adjacent in the vertical direction (longitudinal direction of the mattress 10) in the front zone A1, and the first convex portions adjacent in the vertical direction at the boundary between the front zone A1 and the front zone B1. The interval between the portions 12ZA, 12ZB is wider than the interval between the first convex portions 12ZB, 12ZB vertically adjacent in the front zone B1. The mattress 10 has a larger vertical dimension of the first convex portion 12ZA in the front zone A1 than the first convex portion 12ZB in the front zone B1, but since the horizontal first groove portion 18A is wider in the front zone A1, the mattress in the front zone A1. 10 can be easily bent in the vertical direction. Further, since the boundary between the front zone A1 and the front zone B1 often becomes a starting point when the mattress 10 is bent in the vertical direction, if the first horizontal groove portion 18A extending at the boundary is wide, it corresponds to a variable bed. The mattress 10 is easily bent in the vertical direction. In the front zone B1, the interval between the first convex portions 12ZB and 12ZB adjacent in the vertical direction is smaller than that in the front zone A1, but the vertical dimension of the first convex portion 12ZB is small and the pitch of the first horizontal groove portion 18A is small. Therefore, it is possible to maintain the ease of bending in the vertical direction even in the front zone B1.

このように、マットレス１０によれば、可変ベッドの動きに追従して好適に曲げ変形することができ、背もたれとなるように傾いた可変ベッドに対応して曲がったり、膝を持ち上げるように変形した可変ベッドに対応して曲がったり(図８参照)するなど、縦方向の複数箇所で曲げることにも無理なく追従可能である。また、マットレス１０は、縦方向(マットレス１０の長手方向)だけでなく、肩を横側から支えるように傾いた可変ベッドに対応して横方向(マットレス１０の短手方向)へ曲がり、横方向の複数箇所で曲げることにも無理なく追従可能である。   As described above, according to the mattress 10, it is possible to bend and deform appropriately in accordance with the movement of the variable bed, and to bend or to lift the knee corresponding to the variable bed inclined to become a backrest. Bending at a plurality of locations in the vertical direction, such as bending in response to the variable bed (see FIG. 8), can be smoothly followed. In addition, the mattress 10 bends not only in the vertical direction (longitudinal direction of the mattress 10) but also in the horizontal direction (short direction of the mattress 10) corresponding to the variable bed inclined to support the shoulder from the side, and Can be flexibly followed at a plurality of locations.

マットレス１０は、横方向(マットレス１０の短手方向)に延在する横第１溝部１８Ａおよび横第２溝部２０Ａが、縦方向(マットレス１０の長手方向)において開口側と比べて底側が広く形成されているので、荷重の支持面を確保しつつ、縦方向に隣り合う凸部１２,１２,１４,１４に隙間を比較的大きくすることができる。これにより、マットレス１０は、長尺な縦方向において表または裏の何れの方向に向けて曲げても縦方向への変形を容易にできる。   In the mattress 10, the horizontal first groove portion 18A and the horizontal second groove portion 20A extending in the horizontal direction (the short direction of the mattress 10) are formed such that the bottom side is wider than the opening side in the vertical direction (the longitudinal direction of the mattress 10). Therefore, the gap between the vertically adjacent protrusions 12, 12, 14, 14 can be relatively large while securing a load supporting surface. Accordingly, the mattress 10 can be easily deformed in the longitudinal direction even if the mattress 10 is bent in either the front or back direction in the long longitudinal direction.

第１凸部１２は、先端部１２ｂにおける支持面の外縁が根元部１２ａよりも縦方向(マットレス１０の長手方向)へ張り出して、縦方向の断面形状が先端部１２ｂと比べて根元部１２ａが細くなるくびれた形状である。表ゾーンＡ１と表ゾーンＢ１との境界において縦方向に隣り合う第１凸部１２ＺＡ,１２ＺＢのうち、表ゾーンＡ１を構成する第１凸部１２ＺＡにおける先端部１２ｂの外縁が、表ゾーンＢ１を構成する第１凸部１２ＺＢにおける先端部１２ｂの外縁よりも、基部１６側に位置している。すなわち、表ゾーンＢ１を構成する第１凸部１２ＺＢは、先端部１２ｂの外縁が、表ゾーンＡ１を構成する第１凸部１２ＺＡにおける先端部１２ｂの外縁と比べて基部１６から離れている。これにより、表ゾーンＢ１を構成する第１凸部１２ＺＢの外縁と基部１６との間に形成される根元部１２ａのくびれが、該第１凸部１２ＺＢの突出方向へ大きく開口することになる。このように、マットレス１０は、表ゾーンＡ１,Ｂ１の境界で縦方向(マットレス１０の長手方向)に隣り合う第１凸部１２ＺＡ,１２ＺＢの一方が、他方よりも先端部１２ｂの外縁が基部１６側に位置すると共に、第１凸部１２ＺＡ,１２ＺＢの他方が、一方よりもくびれが第１凸部１２の突出方向へ大きく開口するように形成されている(図１０(ｃ)参照)。これにより、マットレス１０は、表ゾーンＡ１,Ｂ１の境界で表側が凹になるように曲げた際に、表ゾーンＡ１の第１凸部１２ＺＡの先端部１２ｂ(特に外縁付近)が表ゾーンＢ１の第１凸部ＺＢのくびれに入り込む(図１０(ｃ)の一点鎖線参照)。従って、表ゾーンＡ１,Ｂ１の境界で隣り合う第１凸部１２ＺＡ,１２ＺＢが干渉し難いので、当該境界においてマットレス１０を大きく曲げることが可能である。   In the first convex portion 12, the outer edge of the support surface at the distal end portion 12b projects in the vertical direction (the longitudinal direction of the mattress 10) from the root portion 12a, and the vertical cross-sectional shape is smaller at the root portion 12a than at the distal end portion 12b. It has a narrow and narrow shape. Of the first convex portions 12ZA and 12ZB vertically adjacent to each other at the boundary between the table zone A1 and the table zone B1, the outer edge of the distal end portion 12b of the first convex portion 12ZA forming the table zone A1 forms the table zone B1. The first projection 12ZB is located closer to the base 16 than the outer edge of the tip 12b. That is, the outer edge of the front end portion 12b of the first convex portion 12ZB constituting the front zone B1 is farther from the base 16 than the outer edge of the front end portion 12b of the first convex portion 12ZA forming the front zone A1. As a result, the neck of the root portion 12a formed between the outer edge of the first convex portion 12ZB and the base portion 16 constituting the front zone B1 opens largely in the direction in which the first convex portion 12ZB protrudes. As described above, the mattress 10 has one of the first protrusions 12ZA and 12ZB adjacent in the vertical direction (longitudinal direction of the mattress 10) at the boundary between the front zones A1 and B1. And the other of the first protrusions 12ZA and 12ZB is formed such that the constriction is larger than the other in the direction in which the first protrusion 12 protrudes (see FIG. 10C). Thereby, when the mattress 10 is bent so that the front side becomes concave at the boundary between the front zones A1 and B1, the front end portion 12b (particularly, near the outer edge) of the first convex portion 12ZA of the front zone A1 is moved toward the front zone B1. The first convex portion ZB enters the constriction (see the dashed line in FIG. 10C). Therefore, the first convex portions 12ZA and 12ZB adjacent to each other at the boundary between the front zones A1 and B1 are unlikely to interfere with each other, so that the mattress 10 can be largely bent at the boundary.

マットレス１０は、裏面から第１凸部１２の内側へ達するように形成された深縦第２溝部２０Ｂａを有しているので、当該深縦第２溝部２０Ｂａの底を起点に曲げ易くなっている。これにより、マットレス１０は、短尺である横方向(マットレス１０の短手方向)であっても、肩を横側から支えるような可変ベッドの横方向の変形に追従することができる。   Since the mattress 10 has the deep second groove 20Ba formed so as to reach the inside of the first convex portion 12 from the back surface, it is easy to bend from the bottom of the deep second groove 20Ba. . Thereby, the mattress 10 can follow the lateral deformation of the variable bed such that the shoulder is supported from the lateral side even in the short lateral direction (the lateral direction of the mattress 10).

マットレス１０は、第１凸部１２および第２凸部１４が、横方向(マットレス１０の短手方向)において先端部１２ｂ,１４ｂの外縁における幅と根元部１２ａ,１４ａの幅とが同じであるくびれがない形状で形成される。すなわち、第１凸部１２および第２凸部１４は、縦方向(マットレス１０の縦方向)よりも横方向へ変形し難くなっており、使用者の横側の動きに対するホールド性がよい。マットレス１０は、表ゾーンＡ１を構成する第１凸部１２ＺＡが、表ゾーンＢ１を構成する第１凸部１２ＺＢよりも、先端部１２ｂと根元部１２ａとの縦方向の寸法差が大きく設定されている。臀部等の比較的大きな荷重を支持する表ゾーンＢ１の第１凸部１２ＺＢが、縦方向へ変形し難いので、当該表ゾーンＢ１にかかる高荷重をホールド感よく適切に受け止めることができる。このように、マットレス１０は、凸部１２,１４の形状や配置などによって、使用者の荷重を適切に支えて、姿勢維持を助けるような好適なホールド性を備えている。   In the mattress 10, the first convex portion 12 and the second convex portion 14 have the same width at the outer edges of the distal ends 12b, 14b and the width of the roots 12a, 14a in the lateral direction (the short direction of the mattress 10). It is formed in a shape without constriction. That is, the first convex portion 12 and the second convex portion 14 are less likely to be deformed in the horizontal direction than in the vertical direction (the vertical direction of the mattress 10), and have good holding properties against the lateral movement of the user. In the mattress 10, the first convex portion 12ZA forming the front zone A1 has a larger longitudinal dimensional difference between the tip portion 12b and the root portion 12a than the first convex portion 12ZB forming the front zone B1. I have. Since the first convex portion 12ZB of the front zone B1 that supports a relatively large load such as the buttocks is not easily deformed in the vertical direction, the high load applied to the front zone B1 can be appropriately received with a good hold feeling. As described above, the mattress 10 has a suitable holding property by appropriately supporting the load of the user and assisting in maintaining the posture by the shape and arrangement of the convex portions 12 and 14.

マットレス１０は、表裏で対応するゾーンＡ１,Ａ２,Ｂ１,Ｂ２同士の関係において、第２凸部１４が第１凸部１２よりも縦方向(マットレス１０の長手方向)の外縁間の最大寸法が大きい。具体的には、裏ゾーンＡ２の第２凸部１４ＺＡが、表ゾーンＡ１の第１凸部１２ＺＡよりも縦方向の外縁間の最大寸法が大きく、裏ゾーンＡ２が表ゾーンＡ１よりも硬めになっている。同様に、裏ゾーンＢ２の第２凸部１４ＺＢが、表ゾーンＢ１の第１凸部１２ＺＢよりも縦方向の外縁間の最大寸法が大きく、裏ゾーンＢ２が表ゾーンＢ１よりも硬めになっている。すなわち、マットレス１０は、裏面が表面よりも硬めになっている。従って、マットレス１０によれば、表裏を変えるだけで簡単に硬さを変化させることができる。   The mattress 10 has a maximum dimension between outer edges in the vertical direction (longitudinal direction of the mattress 10) in which the second convex portion 14 is longer than the first convex portion 12 in the relationship between the corresponding zones A1, A2, B1, and B2 on the front and back. large. Specifically, the second protrusion 14ZA of the back zone A2 has a larger maximum dimension between the outer edges in the vertical direction than the first protrusion 12ZA of the front zone A1, and the back zone A2 is harder than the front zone A1. ing. Similarly, the second convex portion 14ZB of the back zone B2 has a larger maximum dimension between the outer edges in the vertical direction than the first convex portion 12ZB of the front zone B1, and the back zone B2 is harder than the front zone B1. . That is, the back surface of the mattress 10 is harder than the front surface. Therefore, according to the mattress 10, the hardness can be easily changed only by changing the front and back.

マットレス１０は、第２凸部１４が、先端部１４ｂに形成された縦方向の傾斜面の範囲が、第１凸部１２の先端部１２ｂに形成された縦方向の傾斜面の範囲よりも狭く設定されている。これにより、マットレス１０は、裏面の第２凸部１４の方が表面の第１凸部１２よりも初期の圧縮応力が大きくなり、荷重を適切に受け止めることができる。すなわち、マットレス１０は、裏面が表面よりも硬めになっている。従って、マットレス１０によれば、表裏を変えるだけで簡単に硬さを変化させることができる。   In the mattress 10, the range of the vertical slope formed by the second protrusion 14 at the tip 14 b is narrower than the range of the vertical slope formed at the tip 12 b of the first protrusion 12. Is set. Thereby, in the mattress 10, the initial compressive stress of the second convex portion 14 on the back surface becomes larger than that of the first convex portion 12 on the front surface, and the mattress 10 can appropriately receive the load. That is, the back surface of the mattress 10 is harder than the front surface. Therefore, according to the mattress 10, the hardness can be easily changed only by changing the front and back.

介護を受けているような使用者は、筋力が落ちていることもあり、自ら立ち上がろうとすることを諦めて、ますます筋力が低下する悪循環に陥ることが、使用者の自立という側面から重大な問題である。そこで、マットレス１０には、使用者が快適に使用できる柔軟性や体圧分散性、あるいは可変ベッドに対応した変形容易性に限らず、近年、使用者の自立を支援・促進し得ることが求められている。マットレス１０は、表面が裏面と比べて柔らかいことで、比較的長時間に亘って使用しても負担が少ない。また、マットレス１０は、表面が裏面と比べて変形容易になっていることで、可変ベッドに載置した際に使用者の姿勢保持を適切に補助し得る。これに対して、マットレス１０は、裏面が表面と比べて硬いことで、表裏をひっくり返して裏面を上面にして使用すると、使用者が自力で起き上がり易くなり、使用者が自ら起きたりするなどの動きを補助することができる。このように、例えば状態が悪いときは、マットレス１０の表面を使用することで使用者の負担を小さくし、回復したときは、第２凸部１４を上側にしてマットレス１０の裏面を使用することで使用者の自立を支援するまでの一連の流れに、１枚のマットレス１０で効率よく寄与することができる。   The user who is receiving nursing care may lose muscle strength, give up trying to stand up, and fall into a vicious cycle in which muscle strength is decreasing, which is a serious issue in terms of user independence. It is a problem. Therefore, the mattress 10 is not limited to the flexibility and the body pressure dispersibility that the user can use comfortably, or the ease of deformation corresponding to the variable bed, and in recent years, it is required that the mattress 10 can support and promote the independence of the user. Have been. Since the mattress 10 has a softer surface than the rear surface, the burden is small even when used for a relatively long time. Further, since the mattress 10 has a surface that is more easily deformed than the rear surface, the mattress 10 can appropriately assist the user in maintaining the posture when the mattress 10 is placed on the variable bed. On the other hand, the mattress 10 has a hard back surface compared to the front surface. If the front surface is turned upside down and the back surface is used, the user can easily get up on his own and the user can get up. Can assist movement. Thus, for example, when the condition is poor, the burden on the user is reduced by using the surface of the mattress 10, and when the mattress 10 is recovered, the back surface of the mattress 10 is used with the second convex portion 14 facing upward. Thus, one mattress 10 can efficiently contribute to a series of flows up to supporting the user's independence.

（変更例）
前述した構成に限らず、例えば以下のように変更してもよい。
(１)実施例の凸部は、横方向(マットレスの短手方向)において根元部がくびれていない形状であるが、これに限らず、横方向の断面形状が根元部でくびれたキノコ型であってもよい。この場合、凸部は、横方向のくびれの深さ(先端部の最大幅と根元部の最小幅の差)を、縦方向(マットレスの長手方向)のくびれの深さよりも小さい形状で形成するとよい。換言すると、凸部は、横方向において根元部と先端部の外縁とに寸法差がない形状(実施例)でない場合、横方向における根元部と先端部の外縁との寸法差が、縦方向における根元部と先端部の外縁との寸法差よりも小さい形状で形成することが好ましい。
(２)凸部の横方向(マットレスの短手方向)における根元部のくびれ形状は、第１凸部および第２凸部の何れか一方または両方に設けてもよい。 (Example of change)
The present invention is not limited to the configuration described above, and may be modified as follows, for example.
(1) The convex portion of the embodiment has a shape in which the root portion is not constricted in the lateral direction (the short direction of the mattress), but is not limited thereto, and has a mushroom shape in which the cross-sectional shape in the lateral direction is constricted at the root portion. There may be. In this case, when the convex portion is formed in a shape in which the depth of the constriction in the horizontal direction (the difference between the maximum width of the tip portion and the minimum width of the root portion) is smaller than the depth of the constriction in the vertical direction (the longitudinal direction of the mattress). Good. In other words, when the convex portion is not in a shape having no dimensional difference between the root portion and the outer edge of the distal end portion in the horizontal direction (Example), the dimensional difference between the root portion and the outer edge of the distal end portion in the horizontal direction is different in the vertical direction. It is preferable to form it in a shape smaller than the dimensional difference between the root and the outer edge of the tip.
(2) The constricted shape of the root portion in the lateral direction of the convex portion (transverse direction of the mattress) may be provided in one or both of the first convex portion and the second convex portion.

本開示には、以下の発明が含まれている。
（発明Ａ）
発明Ａは、弾性変形可能な軟質発泡体で矩形状に形成されたマットレスであって、
マットレスの表裏のうちの一面に設けられた複数の第１凸部と、
マットレスの表裏のうちの他面に設けられた複数の第２凸部と、を備え、
前記マットレスの一面は、該マットレスの長手方向の領域に応じてゾーンＡ１とゾーンＢ１とに区分され、
前記マットレスの他面は、該マットレスの長手方向の領域に応じて前記ゾーンＡ１に対応するゾーンＡ２と前記ゾーンＢ１に対応するゾーンＢ２とに区分され、
前記第２凸部は、対応するゾーン同士の関係において、前記第１凸部よりも前記長手方向の寸法が大きく設定されているマットレスである。
発明Ａによれば、表裏において硬さが異なり、表面と裏面とで目的や好みに合わせて使い分け可能である。 The present disclosure includes the following inventions.
(Invention A)
Invention A is a mattress formed in a rectangular shape with an elastically deformable soft foam,
A plurality of first protrusions provided on one of the front and back surfaces of the mattress;
A plurality of second protrusions provided on the other surface of the front and back of the mattress,
One surface of the mattress is divided into a zone A1 and a zone B1 according to a longitudinal region of the mattress,
The other surface of the mattress is divided into a zone A2 corresponding to the zone A1 and a zone B2 corresponding to the zone B1 according to a longitudinal region of the mattress,
The second convex portion is a mattress in which the dimension in the longitudinal direction is set to be larger than that of the first convex portion in relation between corresponding zones.
According to the invention A, the hardness differs between the front and back sides, and the front side and the back side can be properly used according to the purpose and preference.

１０ マットレス，１２ 第１凸部，１２ＺＡ (表ゾーンＡ１の)第１凸部，
１２ＺＢ (表ゾーンＢ１の)第１凸部，１２ａ (第１凸部の)根元部，
１２ｂ (第１凸部の)先端部，１４ 第２凸部，１４ＺＡ (裏ゾーンＡ２の)第２凸部，
１４ＺＢ (裏ゾーンＢ２の)第２凸部，１４ａ (第２凸部の)根元部，
１４ｂ (第２凸部の)先端部，１６ 基部，１８ 第１溝部，
１８Ａ 横第１溝部(第１溝部)，１８Ｂ 縦第１溝部(第１溝部)，
２０ 第２溝部，２０Ａ 横第２溝部(第２溝部)，
２０Ｂ 縦第２溝部(第２溝部) 10 mattress, 12 first convex portion, 12ZA first convex portion (of front zone A1),
12ZB First convex portion (of the front zone B1), 12a Root portion (of the first convex portion),
12b Tip (first convex portion), 14 second convex portion, 14ZA second convex portion (of back zone A2),
14ZB 2nd convex part (of back zone B2), 14a root part (of 2nd convex part),
14b tip (of the second convex portion), 16 base, 18 first groove,
18A horizontal first groove (first groove), 18B vertical first groove (first groove),
20 second groove, 20A horizontal second groove (second groove),
20B Vertical second groove (second groove)

Claims (8)

弾性変形可能な軟質発泡体で矩形状に形成されたマットレスであって、
マットレスの表裏のうちの一面に、他面と反対向きへ突出するように設けられ、該マットレスの長手方向および短手方向へ延在する第１溝部を挟んで碁盤目状に配列された複数の第１凸部と、
マットレスの表裏のうちの他面に、一面と反対向きへ突出するように設けられ、該マットレスの長手方向および短手方向へ延在する第２溝部を挟んで碁盤目状に配列された複数の第２凸部と、を備え、
前記第１凸部は、使用者の体を受ける支持面が、該第１凸部における前記第１溝部に臨む外縁から中央部側へ向かうにつれて前記他面と反対向きへ傾く傾斜面を有する形状で形成され、
前記マットレスの一面は、該マットレスの長手方向の領域に応じてゾーンＡ１とゾーンＢ１とに区分され、
前記ゾーンＡ１を構成する前記第１凸部は、前記ゾーンＢ１を構成する前記第１凸部よりも前記長手方向の寸法が大きく設定され、
前記ゾーンＡ１において前記長手方向に隣り合う前記第１凸部の間隔、並びに該ゾーンＡ１と前記ゾーンＢ１との境界において前記長手方向に隣り合う前記第１凸部の間隔が、前記ゾーンＢ１において前記長手方向に隣り合う前記第１凸部の間隔よりも広く設定されている
ことを特徴とするマットレス。 A mattress formed in a rectangular shape with an elastically deformable soft foam,
A plurality of mattresses are provided on one of the front and back surfaces of the mattress so as to protrude in a direction opposite to the other surface, and are arranged in a grid pattern with first grooves extending in the longitudinal direction and the transverse direction of the mattress therebetween. A first projection,
A plurality of mattresses are provided on the other of the front and back surfaces of the mattress so as to protrude in a direction opposite to the one surface, and are arranged in a grid pattern with second groove portions extending in the longitudinal direction and the transverse direction of the mattress interposed therebetween. A second convex portion,
The first projection has a shape in which a support surface for receiving a body of a user has an inclined surface that is inclined in a direction opposite to the other surface as going from an outer edge of the first projection facing the first groove toward the center. Formed by
One surface of the mattress is divided into a zone A1 and a zone B1 according to a longitudinal region of the mattress,
The first convex portion configuring the zone A1, the dimension in the longitudinal direction is set larger than the first convex portion configuring the zone B1,
In the zone A1, the interval between the first convex portions adjacent in the longitudinal direction, and the interval between the first convex portions adjacent in the longitudinal direction at the boundary between the zone A1 and the zone B1, are the same in the zone B1. A mattress characterized by being set to be wider than a distance between the first convex portions adjacent in a longitudinal direction. 前記第１凸部および前記第２凸部は、該凸部を支持する基部に連なる根元部と、該根元部に連ねて設けられて、使用者の体を受ける支持面を構成する先端部とを備え、
前記第１凸部および前記第２凸部は、前記先端部における支持面の外縁が前記根元部よりも前記長手方向へ張り出して、前記長手方向において前記先端部と比べて前記根元部が細くなるくびれた形状で形成され、
マットレスの短手方向に延在する前記第１溝部および前記第２溝部は、前記長手方向に隣り合う凸部の外縁間の開口側と比べて底側が広く形成されている請求項１記載のマットレス。 The first convex portion and the second convex portion have a root portion connected to a base portion supporting the convex portion, and a distal end portion provided in connection with the root portion and forming a support surface for receiving a body of a user. With
In the first convex portion and the second convex portion, an outer edge of a support surface at the distal end portion projects in the longitudinal direction more than the root portion, and the root portion becomes thinner in the longitudinal direction than the distal end portion. Formed in a constricted shape,
2. The mattress according to claim 1, wherein the first groove and the second groove extending in the short direction of the mattress are formed so that a bottom side is wider than an opening side between outer edges of the protrusions adjacent in the longitudinal direction. . 前記ゾーンＡ１と前記ゾーンＢ１との境界において前記長手方向に隣り合う前記第１凸部のうち、該ゾーンＡ１を構成する第１凸部における先端部の外縁が、該ゾーンＢ１を構成する第１凸部における先端部の外縁よりも、前記基部側に位置し、
前記ゾーンＡ１と前記ゾーンＢ１との境界において前記長手方向に隣り合う前記第１凸部のうち、該ゾーンＡ１を構成する第１凸部における前記根元部のくびれよりも、該ゾーンＢ１を構成する第１凸部における前記根元部のくびれが、該第１凸部の突出方向へ大きく形成されている請求項２記載のマットレス。 Of the first protrusions adjacent in the longitudinal direction at the boundary between the zone A1 and the zone B1, the outer edge of the tip of the first protrusion that forms the zone A1 is the first edge that forms the zone B1. It is located closer to the base side than the outer edge of the tip part in the convex part,
Of the first convex portions adjacent to each other in the longitudinal direction at the boundary between the zone A1 and the zone B1, the first convex portion constituting the zone A1 constitutes the zone B1 rather than the neck at the root portion of the first convex portion constituting the zone A1. The mattress according to claim 2, wherein a constriction at the root portion of the first convex portion is formed so as to increase in a direction in which the first convex portion protrudes. 前記第１凸部および前記第２凸部は、前記短手方向において前記先端部と前記根元部との幅が同じであるくびれがない形状、または前記長手方向の前記くびれよりも前記短手方向のくびれが小さい形状で形成されている請求項２または３記載のマットレス。   The first convex portion and the second convex portion may have the same width in the short side direction as the width of the distal end portion and the base portion, or may have a narrower direction than the narrow side in the longitudinal direction. The mattress according to claim 2 or 3, wherein the constriction is formed in a small shape. 前記ゾーンＡ１を構成する前記第１凸部は、前記ゾーンＢ１を構成する前記第１凸部よりも、前記先端部と前記根元部との前記長手方向の寸法差が大きく設定されている請求項２〜４の何れか一項に記載のマットレス。   The said 1st convex part which comprises the said zone A1, The dimensional difference of the said longitudinal direction of the said front-end | tip part and the said root part is set larger than the said 1st convex part which comprises the said zone B1. The mattress according to any one of claims 2 to 4. 前記長手方向に延在する複数の前記第２溝部の中には、前記第１凸部に対応する位置に設けられて、該第１凸部の内側へ達するように形成された深縦第２溝部がある請求項１〜５の何れか一項に記載のマットレス。   In the plurality of second grooves extending in the longitudinal direction, deep second grooves formed at positions corresponding to the first protrusions and formed to reach the inside of the first protrusions. The mattress according to any one of claims 1 to 5, wherein the mattress has a groove. 前記マットレスの他面は、該マットレスの長手方向の領域に応じて前記ゾーンＡ１に対応するゾーンＡ２と前記ゾーンＢ１に対応するゾーンＢ２とに区分され、
前記第２凸部は、対応するゾーン同士の関係において、前記第１凸部よりも前記長手方向の寸法が大きく設定されている請求項１〜６の何れか一項に記載のマットレス。 The other surface of the mattress is divided into a zone A2 corresponding to the zone A1 and a zone B2 corresponding to the zone B1 according to a longitudinal region of the mattress,
The mattress according to any one of claims 1 to 6, wherein the second convex portion has a dimension in the longitudinal direction larger than that of the first convex portion in a relationship between corresponding zones. 前記第２凸部は、使用者の体を受ける支持面が、該第２凸部における前記第２溝部に臨む外縁から中央部側へ向かうにつれて前記一面と反対向きへ傾く傾斜面を有する形状で形成され、
前記第２凸部は、前記支持面に形成された前記長手方向の傾斜面の範囲が、前記第１凸部の前記支持面に形成された前記長手方向の傾斜面の範囲よりも狭く設定されている請求項１〜７の何れか一項に記載のマットレス。 The second convex portion has a shape in which a support surface for receiving a user's body has an inclined surface that is inclined in a direction opposite to the one surface as it goes from an outer edge of the second convex portion facing the second groove toward a central portion. Formed,
In the second convex portion, a range of the longitudinally inclined surface formed on the support surface is set to be narrower than a range of the longitudinally inclined surface formed on the support surface of the first convex portion. A mattress according to any one of the preceding claims.
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US10676920B2 (en) 2015-06-25 2020-06-09 Pliteq Inc Impact damping mat, equipment accessory and flooring system
TWI844896B (en) * 2022-07-25 2024-06-11 陳均哲 Pad structure

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JP2001327367A (en) * 2000-05-19 2001-11-27 Osaka Nishikawa:Kk Mattress
US20060179580A1 (en) * 2005-02-14 2006-08-17 Span-America Medical Systems, Inc. Inclined mattress pad
JP2017070452A (en) * 2015-10-06 2017-04-13 株式会社イノアックコーポレーション mattress

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JP2001327367A (en) * 2000-05-19 2001-11-27 Osaka Nishikawa:Kk Mattress
US20060179580A1 (en) * 2005-02-14 2006-08-17 Span-America Medical Systems, Inc. Inclined mattress pad
JP2017070452A (en) * 2015-10-06 2017-04-13 株式会社イノアックコーポレーション mattress

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10676920B2 (en) 2015-06-25 2020-06-09 Pliteq Inc Impact damping mat, equipment accessory and flooring system
TWI844896B (en) * 2022-07-25 2024-06-11 陳均哲 Pad structure

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