JP2010253103A - Mattress and elastic unit to be packed in the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mattress capable of easily adjusting the feeling in bed according to user's liking with a simple structure and restraining a sense of incongruity resulting from adjustment of the feeling in bed as low as possible and elastic units to be packed in the mattress. <P>SOLUTION: The mattress 1 includes an elastic frame body 2 forming contours of the mattress 1, first elastic units (3 and 4) to be reversibly packed inside the frame body 2 and for adjusting the feeling in bed and a second elastic unit (elastic layer) 5 lying above the first elastic units (3 and 4). The first elastic units (3 and 4) have a hardness difference between one side and the other side along a thickness direction and hardness of one side and the other side, different from that of the second elastic unit (elastic layer) 5. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a mattress and an elastic unit loaded on the mattress, and more particularly, to a mattress with adjustable sleeping comfort and an elastic unit loaded on the mattress.

  Patent Document 1 discloses an air bed that adjusts the hardness of the mattress by supplying or exhausting air to the air mattress on the bed base using an air pump installed inside the bed.

  Patent Document 2 includes a urethane foam frame disposed inside a mattress, and a latex foam that is reversibly loaded into the frame. The latex foam sandwiches a core material. A mattress having a structure in which latex foams having the same hardness and different thicknesses are laminated has been proposed. When the user lies on the mattress, the latex foam is compressed, and the upper surface of the latex foam and the height of the upper surface of the frame are the same.

Japanese Patent Laid-Open No. 2002-209664 (FIGS. 1 and 7) Noto 3092464 (FIG. 2 and paragraph 0025)

  The air mattress as disclosed in Patent Document 1 requires an air pump, a large number of air hoses and a control box for controlling the air pump, and thus has a problem that the number of parts is large and expensive.

  According to the mattress of Patent Document 2, there is a problem that the user feels uncomfortable because the hardness of the mattress changes abruptly at the boundary between the frame and the latex foam. The reason is that the user's load is directly applied to the latex foam located in the upper layer of the mattress.

  Further, according to the mattress of Patent Document 2, there is a problem that the adjustment range of the mattress comfort is small. The reason for this is that latex foams having different thickness but having the same hardness are laminated with the core material sandwiched in the latex foam.

  An object of the present invention is to provide a mattress that can easily adjust the sleeping comfort according to the user's preference with a simple configuration, and that suppresses the uncomfortable feeling caused by the sleeping comfort as much as possible, and an elastic unit loaded therein. That is.

  According to a first aspect of the present invention, there is provided an elastic frame body that forms an outline of a mattress, a first elastic unit for adjusting a sleeping comfort that is reversibly loaded inside the elastic frame body, and the first elastic member. An elastic layer positioned above the unit, wherein the first elastic unit has different hardness on one side and the other side along the thickness direction, and the hardness on the one side and the other side is A mattress different from the elastic layer is provided.

  The hardness of the mattress, the elastic frame, the first elastic unit, and the elastic layer, that is, the amount of displacement (sinking amount) with respect to a predetermined load, conforms to JIS K 6400 or equivalent foreign or international standards. To evaluate.

  According to a second aspect of the present invention, there is provided a sleeping comfort adjustment elastic unit loaded in the mattress, wherein the core material and the elastic material are arranged on one side along the thickness direction of the core material and are elastically deformable. 1 layer and a second layer which is arranged on the other side along the thickness direction of the core material and is elastically deformable, and the core material is harder than the first and second layers. The first layer and the second layer have different hardness, and the softer layer of the first layer and the second layer is thicker than the harder layer, providing an elastic unit To do.

[mattress]
(1) The mattress according to the present invention has a simple configuration in which sleeping comfort is adjusted by reversing the first elastic unit having different hardness on one side and the other side.
(2) According to the present invention, since the hardness of the mattress can be easily changed by inverting the first elastic unit, the sleeping comfort can be easily adjusted according to the user's preference.
(3) According to the present invention, the adjustment width of the sleeping comfort is expanded because the hardness of one side and the other side of the first elastic unit is different from that of the elastic layer.
(4) According to the present invention, the difference in hardness between the first elastic unit for adjusting the sleeping comfort and the elastic frame for forming the outline of the mattress is located on the first elastic unit. By being absorbed by the elastic layer having a predetermined hardness, the uncomfortable feeling caused by loading the first elastic unit for adjusting the sleeping comfort is suppressed as much as possible.
(5) According to the present invention, the change in the body pressure dispersion ability at the boundary between the elastic frame and the first elastic unit, for example, the head side peripheral part and the foot side peripheral part of the mattress is changed to the elastic layer (second elastic Unit) and a good body pressure dispersion distribution can be obtained on the entire surface of the mattress.

[Elastic unit for comfort adjustment loaded in mattress]
(1) According to the elastic unit for adjusting sleeping comfort according to the present invention, the hardness of the mattress can be easily changed by the inversion thereof. Also, the mattress according to the present invention is inexpensive and can be easily assembled from a small number of parts. Thus, the mattress according to the present invention can variably set the sleeping comfort according to the preferences of a large number of users, and can easily change the sleeping comfort according to changes in the user's body shape.
(2) According to the elastic unit for adjusting the sleeping comfort according to the present invention, the “hardness” is different between the one side and the other side. Therefore, when the elastic unit is inverted, the difference in sleeping comfort becomes significant. You can feel the effect of adjusting sleep comfort.
(3) According to the elastic unit for sleep comfort adjustment according to the present invention, the softer layer is thicker and the harder layer is thinner than the first layer and the second layer. Thus, even when this elastic unit is loaded on the mattress so that the soft layer is on top, and even when a large load is applied to the elastic unit, the second layer formed thicker The body pressure of the user can be dispersed by elastic deformation without being completely crushed. On the other hand, since the hard layer has a small amount of displacement with respect to a predetermined load, the body pressure of the user can be sufficiently dispersed even if the layer is formed thin.
(4) In the elastic unit for comfort adjustment according to the present invention, by providing a core material between the first layer and the second layer, the difference in sleep comfort between one side and the other side of the elastic unit is remarkable. Become. Further, the core material is sandwiched between the elastically deformable first layer and the second layer, so that when the user gets on and off the elastic unit of the present invention or a mattress loaded with the elastic unit, It is possible to prevent the elastic frame body from being damaged by the core material. Moreover, by providing a core material between the first layer and the second layer, the shapes of the first layer and the second layer are maintained, and interference between the two layers is prevented.

(A) is the partially broken top view of the mattress which concerns on Example 1 of this invention, (B) is BB sectional drawing of (A). (A) is a top view of the 1st elastic unit which the mattress shown in FIG. 1 incorporates, (B) is BB sectional drawing of (A). FIG. 3 is a load-stroke diagram of the elastic frame, the first elastic unit, and the second elastic unit shown in FIG. 1. It is a partially broken top view of the mattress for double beds concerning Example 2 of the present invention. (A) is the top view of the 1st elastic unit which concerns on Example 3 of this invention, (B) is the side view seen from the front-back direction of (A). (A) is the top view of the 1st elastic unit which concerns on Example 4 of this invention, (B) is the side view seen from the front-back direction of (A). (A) is the top view of the 1st elastic unit which concerns on Example 5 of this invention, (B) is the side view seen from the front-back direction of (A).

  In an embodiment of the present invention, the elastic layer positioned above the first elastic unit is configured independently of the elastic frame and the first elastic unit, and the first elastic unit includes A second elastic unit that is longer than the length along the front-rear direction, and the lower surface of the second elastic unit is supported from the elastic frame body at both ends along the front-rear direction; The part is placed on the upper surface of the first elastic unit. According to this embodiment, a rapid change in body pressure dispersion capacity due to the difference in hardness between the elastic frame and the first elastic unit is avoided by the second elastic unit, and a good body pressure dispersion effect can be obtained. it can. In particular, since the end of the second elastic unit is supported from the elastic frame body, the body pressure dispersion ability at the boundary between the elastic frame body and the first elastic unit, that is, the edge of the mattress is improved. . Further, since the second elastic unit formed independently from the elastic frame is easy to remove, the operation of changing the sleeping comfort by inverting the first elastic unit is simplified.

  In an embodiment of the present invention, the length of the first elastic unit along the front-rear direction is set so that the first elastic unit is positioned below the back and the buttock of the user. According to this embodiment, the first elastic unit for adjusting the sleeping comfort is located at a position corresponding to the back load and the buttocks load that have large individual differences.

  In an embodiment of the present invention, the first elastic unit is arranged on one side along the thickness direction of the first elastic unit, and is arranged on the other side with a first layer elastically deformable. An elastically deformable second layer, wherein the first layer and the second layer have at least different hardnesses, and the elastic frame body and the elastic layer have different hardnesses than the first layer. Between the hardness of the second layer and the hardness of the second layer.

  In an embodiment of the present invention, the core member recedes from the first and second layers along the surface direction of the mattress. According to this aspect, the durability of the core material is improved and the core material is prevented from damaging other members, for example, the elastic frame of the mattress.

  In an embodiment of the present invention, corners and / or sides of the first elastic unit are chamfered. According to this form, the durability of the first elastic unit is improved.

In the embodiment of the present invention, by setting the hardness of the elastic layer as follows, the change in the hardness along the front-rear direction of the mattress is relieved:
(1) Hardness equivalent to the elastic frame body;
(2) The softness of the one side or the other side of the first elastic unit <the hardness of the elastic layer ≦ the hardness of the elastic frame body <the one of the first elastic unit Hardness of either one of the side and the other side.
(3) The hardness of the softer one of the first elastic unit and the other side <the hardness of the elastic frame body ≦ the hardness of the elastic layer <the one side of the first elastic unit And the hardness of the harder of the other side.

  In an embodiment of the present invention, the elastic layer has a hardness that moderates a change in hardness along the front-rear direction of the mattress.

  In the embodiment of the present invention, the difference in hardness between the first layer and the second layer is set so that the difference in displacement with respect to a predetermined load in consideration of the weight of the user is 10 mm or more. According to this aspect, the difference in sleeping comfort between the case where the first layer is placed on the upper side and the case where the second layer is placed on the upper side becomes clear, and the adjustment range of the sleeping comfort is expanded.

  In the embodiment of the present invention, the hardness of the elastic frame and the elastic layer (second elastic unit) are made equal. Further, the hardness of the elastic layer (second elastic unit) may be closer to the elastic frame body between the first or second layer and the hardness of the elastic frame body. According to this embodiment, the uncomfortable feeling that occurs at the boundary between the elastic frame and the elastic layer is suppressed as much as possible.

In the embodiment of the present invention, the difference in hardness between the first and second layers is in the range of 50 to 250 N / 314 cm ² (JIS K 6400), preferably 70 to 200 N / 314 cm ² (JIS K 6400). ). The hardness of the elastic frame and the elastic layer (second elastic unit) is preferably within a range of ± 25% from the center of these ranges. Of the first and second layers, the thickness of the softer layer is set so that a sufficient amount of displacement can be secured, and the thickness of the harder layer is made as thin as possible to make the mattress thin. And manufacturing costs are reduced.

  In the embodiment of the present invention, since the elastic frame and the elastic layer are separate, the first elastic unit can be easily reversed and loaded. However, in some cases, the elastic frame and the elastic layer can be integrated.

  In the embodiment of the present invention, the first elastic unit is divided and loaded in plural along the longitudinal direction of the mattress or bed. According to this embodiment, for example, the sleeping comfort is changed between the back and the buttocks. be able to. That is, according to the user's preference, the body pressure dispersing ability or sleeping comfort according to the body part is set.

  In the embodiment of the present invention, the first elastic unit is divided and loaded in a plurality along the width direction of the mattress or bed. The mattress according to this embodiment is suitable as a mattress applied to a bed for a plurality of persons such as a double bed, and can change the sleeping comfort according to each user. A sudden change in the sleeping comfort around the user is absorbed by the elastic layer (second elastic unit). In this embodiment, the elastic layer (second elastic unit) is formed longer than the width of the first elastic unit, and both ends in the width direction are elastic frame bodies on the lower surface of the elastic layer (second elastic unit). The width direction intermediate portion is preferably placed on the first elastic unit.

  As described above, by dividing the first elastic unit along the front-rear direction and / or the width direction, various mattresses having different sleeping comfort or body pressure dispersion distribution are provided.

  The mattress according to the embodiment of the present invention can allow addition of various surface layers, intermediate layers, and bottom layers.

  An embodiment of the present invention will be described below with reference to the drawings. FIG. 1A is a partially cutaway top view of a mattress according to an embodiment of the present invention, and FIG. 1B is a cross-sectional view taken along the line BB in FIG.

[Whole mattress structure]
Referring to FIG. 1A, a mattress 1 according to this embodiment includes an elastic frame 2 that forms an outline of the mattress 1, and a first sleeping comfort adjustment that is reversibly loaded inside the elastic frame 2. Elastic unit (3, 4) and a second elastic unit (elastic layer) 5 located above the first elastic unit (3, 4). The first elastic unit (3, 4) has different hardnesses on one side and the other side along the thickness direction, and the hardness on one side and the other side is the second elastic unit (elastic layer) 5 Is different. The first elastic unit (3, 4) includes a first back-side elastic unit 3 and a first foot-side elastic unit 4.

  The second elastic unit 5 has a hardness equivalent to that of the elastic frame 2 so as to alleviate a change in hardness along the front-rear direction of the mattress 1 (front-rear direction of the bed). The second elastic unit 5 is configured independently of the elastic frame body 2 and the first elastic unit (3, 4), and extends in the front-rear direction (the bed front-rear direction) of the first elastic unit (3,4). It is formed longer than the length.

  The elastic frame 2, the first elastic unit (3, 4), and the second elastic unit 5 are formed from a resin elastic body, for example, foamed urethane foam, rubber foam, or the like.

  Specifically, in the mattress 1, there are formed an upper step recess 2a and a lower step recess 2b communicating with each other. A second elastic unit 5 is accommodated in the upper recess 2a located on the upper surface side of the mattress 1 so as to cover the first elastic unit (3, 4). A first elastic unit (3, 4) is accommodated in the lower recess 2b located on the bottom side of the mattress 1 and on the bottom surface of the elastic frame 2.

  Thus, the lower surface of the second elastic unit 5 is supported along the front-rear direction at both ends thereof from the elastic frame 2, more specifically, from the bottom surface of the upper recess 2a, and the intermediate portion thereof is the first elastic. It is mounted on the upper surface of the unit (3, 4). On the other hand, the length along the front-rear direction of the first elastic unit (3, 4) is such that the first back-side elastic unit 3 of the first elastic unit (3, 4) is the back of the user. It is set to be positioned below and below the first foot side elastic unit 4 and the heel.

  The surface of the mattress 1 is covered with an exterior cover 6. The exterior cover 6 includes, for example, a front quilt portion 6a, a side quilt portion 6b, and a bottom fabric portion 6c. The front quilt 6a and the side quilt 6b are releasably connected by a fastener (not shown). The side quilt portion 6b and the bottom fabric portion 6c are connected by an edge tape or the like. This makes it easy to take out the second elastic unit 5 from the mattress 1 and to invert and load the first elastic unit (3, 4).

  The surface of the exterior cover 6 is formed of a fiber material, and the inside of the front quilt portion 6a of the exterior cover 6 is formed of polyester cotton or foamed urethane foam.

[Function of the entire mattress]
The user's load is applied to the first elastic unit (3, 4) via the second elastic unit 5 having the same hardness as that of the elastic frame 2, thereby causing the mattress 1 to move in the front-rear direction. Abrupt changes in the ability to disperse body pressure along are eased. In addition, the lower surface of the second elastic unit (elastic layer) 5 is supported on the bottom surface of the upper recess 2a, the first elastic units (3, 4), and the bottom surface of the upper recess 2a from the front to the rear. ing. Due to this support structure, particularly due to the difference in hardness between the elastic frame 2 and the first elastic unit (3, 4) on the boundary between the elastic frame 2 and the first elastic unit (3, 4). The rapid change of the body pressure dispersion capability along the front-rear direction of the mattress 1 is further avoided, and a good body pressure dispersion distribution can be obtained. Further, even if the first elastic unit (3, 4) is divided into a plurality of parts, the second elastic unit (elastic layer) 5 covering the entire upper surface of the first elastic unit (3, 4) The uncomfortable feeling of sleeping on the divided positions is suppressed.

  In particular, referring to FIG. 1A, the partial weights (W >> w) of the back and buttocks vary greatly depending on the person, but the partial weights of the head and legs are relatively small. According to the mattress 1 of the present embodiment, a large number of people having various weights can be obtained by the first back-side elastic unit 3 that receives the load on the back and the first foot-side elastic unit 4 that receives the load on the buttocks. It is possible to meet the demands regarding the sleeping comfort.

[Structure of the first elastic unit (3, 4)]
2A is a top view of the first elastic unit built in the mattress shown in FIG. 1, and FIG. 2B is a cross-sectional view taken along the line BB in FIG. 2A. The first back side elastic unit 3 and the first foot side elastic unit 4 constituting the first elastic unit (3, 4) have basically the same structure. Therefore, in the following description, the structure of the first foot side elastic unit 4 will be mainly described, and the structure of the first back side elastic unit 3 will be described with respect to the structure of the first foot side elastic unit 4. Refer to it.

  Referring to FIG. 2A and FIG. 2B, the first foot side elastic unit 4 is arranged on one side along the thickness direction of the core material 4b and the core material 4b and is elastically deformable. 1 layer 4a and a second layer 4c which is arranged on the other side along the thickness direction of the core material 4b and is elastically deformable. The core material 4b is formed to be harder than the first and second layers 4a and 4c. The first layer 4a and the second layer 4c are different in hardness. The hardness of the first layer 4a and the hardness of the second layer 4c are the same as the hardness of the elastic frame 2 and the second elastic unit (elastic layer) 5, and the hardness of the first layer 4a and the second layer. It is formed so as to be between the hardnesses of 4c (see FIG. 3). Further, the core material 4b is formed so as to recede from the first and second layers 4a and 4c along the surface direction of the mattress 1 shown in FIG.

Examples of setting the thickness and hardness of the first layer 4a, the core material 4b, and the second layer 4c are shown below. The hardness is measured according to JIS K 6400.
(1) First layer (harder layer) 4a Thickness: 22 mm, hardness: 187.5 ± 32.5 N / 314 cm ²
(2) Core 4b Thickness: 7mm, Hardness: 300N / 314cm ²
(3) Second layer (softer layer) 4c Thickness: 70mm, hardness: 58.8 ± 19.6N / 314cm ²

The first and second layers 4a and 4c are made of the same material as the elastic frame 2 and the second elastic unit 5 and have different hardness, and the core material (intermediate layer) 4b is used as the core material (intermediate layer) 4b. For example, hard felt made mainly of polyester, or wood or resin having a hardness of 200 N / 314 cm ² (JIS K 6400) or higher is used.

[Function of the first elastic unit (3, 4)]
The mutual relationship of the hardness of the elastic frame 2, the first layer 4a and the second layer 4c of the first elastic unit (3, 4), and the second elastic unit (elastic layer) 5 described above is described. It will be explained together. FIG. 3 is a load-stroke diagram of the elastic frame, the first layer and the second layer of the first elastic unit, and the second elastic unit shown in FIG. 1.

  Referring to FIG. 3, regarding the hardness of the elastic frame 2 and the second elastic unit 5 between the hardness of the second layer 4c and the first layer 4a, and the amount of displacement with respect to a predetermined load, If the displacement amount of the first layer 4a is “A” and the displacement amount of the second layer 4c is “C”, it can be seen that C−A ≧ 10 mm. Thus, when the top and bottom of the first elastic unit (3, 4) are inverted by making the difference of C-A larger than a predetermined value, a clear difference in hardness, that is, a clear difference in sleeping comfort. Is clearly recognized by users.

  Further, comparing the first layer 4a and the second layer 4c, the soft second layer 4c is thicker and the hard first layer 4a is thinner. Thereby, the deformation margin of the easily deformable second layer 4c is ensured, and the mattress 1 can be formed thin and lightweight because the first layer 4a that is difficult to deform is thin. Even if 4a and 4c come up, a sufficient body pressure dispersion effect can be obtained.

  As shown in FIGS. 2A and 2B, the core member 4b is formed so as to recede from the first and second layers 4a and 4c. This prevents the hard core 4b from interfering with the soft elastic frame 1 and damaging the elastic frame 1 due to elastic deformation of the first foot side elastic unit 4 or the like when the user gets on and off the mattress. Is done. Further, it is possible to prevent a load from being directly applied to the core material 4b which is not easily elastically deformed without the elastically deformable first or second layers 4a and 4c. As a result, the durability of the core material 4b that receives repeated loads is improved. The receding degree D of the core material 4b from the end faces of the first and second layers 4a and 4c is not more than a predetermined value so as to prevent the adhesion of the first and second layers 4a and 4c at the time of manufacture. Is preferred. Therefore, the retreat degree of the core material is preferably about 2 to 10 mm.

[Double bed mattress]
In the present embodiment, with respect to points common to the first embodiment, the description of the first embodiment will be referred to as appropriate, and differences between the present embodiment and the first embodiment will be mainly described.

  FIG. 4 is a partially broken top view of a mattress for a double bed according to Embodiment 2 of the present invention. Referring to FIG. 4, the first elastic unit (13a, 13b, 14a, 14b) is divided into a plurality along the width direction of the mattress 11, and the left and right first back-side elastic units 13a, 13b and The left and right first foot side elastic units 14a and 14b are configured. The width of the second elastic unit (elastic layer) 15 is longer than the width of the first elastic unit (13a, 13b, 14a, 14b). On the lower surface of the second elastic unit 15, both end portions in the width direction are supported by the elastic frame 2, and intermediate portions in the width direction are placed on the first elastic units (13 a, 13 b, 14 a, 14 b).

  According to the mattress 11 according to the present embodiment, even if the hardness selected by the left and right users is different, the second elastic unit (elastic layer) 15 allows the mattress 11 to be A sudden change in hardness is alleviated and the body pressure distribution becomes smooth. That is, in the mattress 11 for the double bed, even if a plurality of users individually select different hardnesses and adjust the sleeping comfort, the body pressure dispersion distribution is improved, and the uncomfortable feeling caused by the sleeping comfort adjustment is suppressed as much as possible. The

[Side protection cover of first elastic unit]
In the present embodiment, with respect to points common to the first embodiment, the description of the first embodiment will be referred to as appropriate, and differences between the present embodiment and the first embodiment will be mainly described.

  FIG. 5A is a top view of a first elastic unit according to Embodiment 3 of the present invention, and FIG. 5B is a side view of the first elastic unit of FIG. It is. Referring to FIGS. 5A and 5B, the first elastic unit 24 includes the first and second layers in the same manner as the first foot elastic unit 4 shown in FIG. 2B. 24a, 24c and a core member 24b. Further, a partial protective cover 26 extending along the front-rear direction is bonded to the left and right side portions of the first elastic unit 24. The partial protective cover 26 prevents stress from concentrating on the side of the first elastic unit 24 when the user gets on and off the mattress, and the tear strength is improved. The partial protective cover 26 can be formed from a nonwoven fabric or a cloth, and the width is preferably 20 mm or more.

[Overall protective cover of the first elastic unit]
In the present embodiment, with respect to points common to the third embodiment, the description of the third embodiment will be referred to as appropriate, and differences between the present embodiment and the third embodiment will be mainly described.

  FIG. 6A is a top view of a first elastic unit according to Embodiment 4 of the present invention, and FIG. 6B is a side view of the first elastic unit of FIG. It is. Referring to FIGS. 6A and 6B, the first elastic unit 34 includes the first and second layers in the same manner as the first foot elastic unit 4 shown in FIG. 2B. 34a and 34c and a core material 34b. Further, an entire protective cover 36 is bonded to the entire surface of the first elastic unit 34. With this shape, local stress is prevented from concentrating on the first elastic unit 34 when the user gets on and off the mattress, and the tear strength is improved. The overall protective cover 36 can be formed from a nonwoven fabric or a cloth.

  7A is a top view of a first elastic unit according to Embodiment 5 of the present invention, and FIG. 7B is a side view of the first elastic unit in FIG. 7A viewed from the front-rear direction. is there. Referring to FIGS. 7A and 7B, the first elastic unit 44 includes the first and second layers in the same manner as the first foot elastic unit 4 shown in FIG. 2B. 44a, 44c and a core material 44b. Further, the left and right sides of the first elastic unit 44 are chamfered 47. Such chamfering 47 prevents stress from concentrating on the side of the first elastic unit 44 when the user gets on and off the mattress, thereby improving the tear strength. Further, when the first elastic unit 44 is loaded into or taken out of the mattress by the chamfer 47, the frictional resistance is reduced and workability is improved.

  The present invention is suitably used for a bed mattress or a bedding such as a mattress placed on a floor surface.

DESCRIPTION OF SYMBOLS 1 Mattress 2 Elastic frame 2a Upper stage recessed part 2b Lower stage recessed part 3 1st back side elastic unit (for sleeping comfort adjustment)
4 First foot side elastic unit (for comfort adjustment)
4a First layer (one side layer)
4b Core material 4c Second layer (layer on the other side)
5 Second elastic unit (for relaxing sleep comfort)
6 exterior cover 6a front quilt 6b side quilt 6c bottom fabric 11 mattress (for double bed)
12 elastic frame bodies 13a, 13b left and right first back side elastic units 14a, 14b left and right first foot side elastic units 15 second elastic unit (elastic layer)
24 1st elastic unit 24a 1st layer (layer on one side)
24b Core material 24c 2nd layer (layer on the other side)
26 Partial protective cover 34 First elastic unit 34a First layer (one side layer)
34b Core material 34c Second layer (layer on the other side)
36 Whole protective cover 44 First elastic unit 44a First layer (one side layer)
44b Core material 44c 2nd layer (layer on the other side)
47 Chamfering D Retraction degree of core material

Claims (7)

An elastic frame that forms the outline of the mattress;
A first elastic unit for sleep comfort adjustment that is reversibly loaded inside the elastic frame;
An elastic layer located above the first elastic unit,
The mattress characterized in that the first elastic unit has different hardnesses on one side and the other side along the thickness direction, and the hardness on the one side and the other side is different from that of the elastic layer. The elastic layer is a second elastic unit that is configured independently of the elastic frame and the first elastic unit, and is longer than a length along the front-rear direction of the first elastic unit,
Along the front-rear direction, the lower surface of the second elastic unit has both ends supported from the elastic frame, and an intermediate portion is placed on the upper surface of the first elastic unit.
The mattress according to claim 1.   The length along the front-rear direction of the first elastic unit is set so that the first elastic unit is positioned below the back and the buttock of the user. The mattress according to 2. The first elastic unit includes a first layer disposed on one side along the thickness direction of the first elastic unit and elastically deformable, and a second layer disposed on the other side and elastically deformable. And including
The first layer and the second layer are at least different in hardness,
The hardness of the elastic frame and the elastic layer is between the hardness of the first layer and the hardness of the second layer.
The mattress as described in any one of Claims 1-3 characterized by the above-mentioned. An elastic unit for adjusting the sleeping comfort loaded in the mattress,
A core material,
A first layer disposed on one side along the thickness direction of the core material and elastically deformable;
A second layer disposed on the other side along the thickness direction of the core material and elastically deformable;
Have
The core material is harder than the first and second layers,
The first layer and the second layer are different in hardness,
Of the first layer and the second layer, the softer layer is thicker than the harder layer,
An elastic unit characterized by that.   The elastic unit according to claim 5, wherein the core member recedes from the first and second layers along a surface direction of the elastic unit.   The elastic unit according to claim 5 or 6, wherein corners and / or sides of the first elastic unit are chamfered.

Images