JP5192287B2 - Bed mattress - Google Patents

Description

  The present invention relates to a mattress for a bed that is excellent in cushioning properties and body pressure dispersibility, is lightweight, and is easy to transport and install.

  Bed mattresses do not cause excessive sinking because they are thicker than ordinary mattresses, whereas ordinary mattresses are mainly made of polyurethane foam or other foam. Thus, materials and structures different from general mattresses are made.

  Spring mattresses are widely used as bed mattresses because they prevent excessive sinking and improve durability. For example, as described in Patent Document 1, a spring unit in which a large number of pocket coils having a structure in which a coil spring is sealed inside a flexible bag body is arranged in a forest is provided, and the outermost periphery of the spring unit is provided. A larger spring force is applied to the pocket coils of the outer pocket coil group arranged side by side than the pocket coils of the inner pocket coil group surrounded by the outer pocket coil group. In some coil groups, the upper and lower surfaces of each pocket coil are connected to each other via a belt-like sheet.

  However, since the spring mattress uses a large number of springs and the like, it is heavy and requires a great deal of labor in transportation and installation. Moreover, since it was comprised from the various kind of member, there existed a problem that disposal and a separation were difficult.

  On the other hand, to reduce the transportation and installation of a mattress for a bed has been demanded for medical use, nursing care, and general use, and a bed mattress that does not use a spring has been proposed.

  For example, the bed mattress described in Patent Document 2 does not use a spring, measures weight reduction, and prevents excessive subsidence due to thickness. The upper layer made of flexible urethane foam is laminated. Therefore, when a body pressure is applied to a specific location in the upper layer and is greatly compressed and deformed, the region around the location is also deformed following this. Therefore, there is a problem that the body pressure of the human body is not uniformly dispersed as a whole and the body pressure dispersibility is inferior.

  In addition, as a mattress having excellent body pressure dispersibility, a mattress having an uneven surface or a plurality of lateral grooves on the surface of the mattress has been proposed.

  For example, in the mattress described in Patent Document 3, the surface portion of the mattress is composed of four parts corresponding respectively to the human head, chest, waist, and legs, and each part is in the longitudinal direction and the width direction. It consists of an appropriate number of support sections each independently divided into rectangles by elongated grooves, and each support section in each of the four parts is a weight ratio of the human head, chest, waist and legs, respectively. It is set to have an area proportional to.

  As a result, a rectangle with a large area is arranged in a portion where the body pressure is large, and sinking is reduced, and a rectangle of a small area is arranged in a portion where the body pressure is small, so that an appropriate sinking can be obtained. Thus, the body pressure dispersibility of each part is made appropriate, and a good sleeping posture can be obtained.

If a mattress as in Patent Document 3 is used for the upper layer in Patent Document 2, a bed mattress having a body pressure dispersibility can be obtained to some extent, but compared with a material using a spring as in Patent Document 1 Although improved in terms of weight, the body pressure dispersibility is inferior.
Japanese Patent Laid-Open No. 9-276084 Japanese Patent Laid-Open No. 11-046936 JP 11-318646 A

  Therefore, the present invention is a bed mattress made of polyurethane foam, which is equivalent to or better than a bed mattress using a spring, has excellent cushioning and body pressure dispersibility, is lightweight, and is easy to transport and install. The purpose is to provide a mattress.

In order to achieve the above object, the present invention provides a bed mattress comprising a support, a core and a frame, wherein the support is made of rectangular urethane foam and has a plurality of concave grooves reaching both ends in the short side direction. On the surface , the core is made of rectangular urethane foam , the short side is folded in two in the long side direction, and both ends of the long side are fitted and supported in one concave groove of the support, The frame is provided so as to surround the periphery of the support.
The concave groove has a depth of 30 to 70 mm and a width of 15 to 80 mm, and the core body has a thickness of 10 to 40 mm and a hardness of 100 to 300 N.

  As described above, by folding the short side of the core body made of rectangular urethane foam in two in the long side direction and adopting a form in which both ends of the long side are fitted and supported in one concave groove of the support body, Even if a hard core body is not used, the upper surface of the core body is distorted and becomes a compressed body, so that the distorted portion becomes hard and appropriate rebound resilience is obtained, and the side surface of the core body is Due to the almost upright body, the curved distortion of the side has elasticity like a spring, and the cushioning property as a urethane foam of the support body has excellent cushioning property and excessive sinking when body pressure is applied Can also be prevented.

Here, the long side direction of the support body is a direction parallel to a line connecting the head and feet when the human body takes a supine posture on the mattress, and the short side direction is a direction perpendicular thereto.
Hardness means that the polyurethane foam used to obtain the desired surface hardness as a bed mattress is harder than the polyurethane foam used for the core of the present invention.

  In addition, since the core body suitably fitted and supported by the plurality of concave grooves in the support body exists individually, when the body pressure is applied, different movements are possible for each core body. Therefore, the body pressure of the human body is uniformly dispersed as a whole, and the body pressure dispersibility is excellent.

  In addition, since a hard core is not used, it is possible to reduce the weight of the bed mattress, and it is easy to transport and install.

  Further, since the rectangular core body is folded in half, when body pressure is applied to the core body, a gap is formed on the inner surface of the folded core body, and the side surfaces of adjacent core bodies are also curved. Therefore, since the air gap can be improved as a mattress, the bed mattress is comfortable when in use.

  Furthermore, by providing a frame so as to surround the periphery of the support body, the rigidity of the support body is enhanced by the frame body, and the rigidity of the bed mattress as a whole is increased, and it is fitted and supported in the recessed groove of the support body. It is possible to prevent the core body from being displaced in the short-side direction of the support body and to prevent the core body from falling out of the concave groove.

  Moreover, it is preferable that the space | interval between the ditch | grooves of a support body shall be 10-40 mm, and when it makes a core body fit and support between the said ditch | grooves by setting it as this range, it is moderate between adjacent core bodies. Space can be maintained and excellent breathability can be obtained, and the core body is arranged at an appropriate interval, so that the support of the human body as a mattress for a bed can be secured, and the core body It is possible to prevent dropping from the support groove.

  In addition, the core used in the area corresponding to the waist of the mattress is made harder than the core used in the area corresponding to the head and legs, thereby suppressing excessive sinking of the waist that takes the most weight. It is possible to maintain a natural sleeping posture that is comfortable on the body line and to obtain better body pressure dispersibility.

  Furthermore, it is preferable to form a groove reaching the both ends of the short side direction and / or the long side direction of the support on the back surface of the support, and the ventilation groove can improve the air permeability inside the mattress. It becomes possible.

  Highly hard core by adopting a form in which the short side of the core made of rectangular urethane foam is folded in half in the long side direction and both ends of the long side are fitted and supported in one concave groove of the support Even if the body is not used, when the rectangular core body is folded in half, the top surface of the core body is distorted and the distorted portion becomes hard, so that the human body can be supported and the side surface of the core body is almost upright Because it is in the body, the side bending distortion has elasticity like a spring, and the cushioning property as a urethane foam of the support body prevents excellent cushioning and excessive sinking when body pressure is applied You can also

  In addition, since the core body suitably fitted and supported by the plurality of concave grooves in the support body exists individually, when the body pressure is applied, different movements are possible for each core body. Therefore, the body pressure of the human body is uniformly dispersed as a whole, and the body pressure dispersibility is excellent.

  Moreover, since the core body with high hardness is not used, it is light as a bed mattress and can be easily transported and installed.

  Further, since the rectangular core body is folded in half, when body pressure is applied to the core body, a gap is formed on the inner surface of the folded core body, and air permeability is achieved by the gap.

  Furthermore, by providing a frame so as to surround the periphery of the support body, the rigidity of the support body is enhanced by the frame body, and the rigidity of the bed mattress as a whole is increased, and it is fitted and supported in the recessed groove of the support body. It is possible to prevent the core body from being displaced in the short-side direction of the support body and to prevent the core body from falling out of the concave groove.

  Moreover, it is preferable that the space | interval between the ditch | grooves of a support body shall be 10-40 mm, and when it makes a core body fit and support between the said ditch | grooves by setting it as this range, it is moderate between adjacent core bodies. Space can be maintained and excellent breathability can be obtained, and the core body is arranged at an appropriate interval, so that the support of the human body as a mattress for a bed can be secured, and the core body It is possible to prevent dropping from the support groove.

  In addition, the core used in the area corresponding to the waist of the mattress is made harder than the core used in the area corresponding to the head and legs, thereby suppressing excessive sinking of the waist that takes the most weight. It is possible to maintain a natural sleeping posture that is comfortable on the body line, and to obtain excellent body pressure dispersibility by the core.

  Furthermore, it is preferable to form a groove reaching the both ends of the short side direction and / or the long side direction of the support on the back surface of the support, and the ventilation groove can improve the air permeability inside the mattress. It becomes possible.

  Embodiments of the present invention will be described with reference to the accompanying drawings. Here, FIG. 1 is a perspective view of a mattress for a bed according to the present invention, FIG. 2 is a side view thereof, FIG. 3 is a cross-sectional view taken along line AA in FIG. .

  The mattress for a bed according to the present invention is excellent in cushioning properties and body pressure dispersibility and is lightweight as a mattress used in a bed.

  That is, as shown in FIGS. 1 to 3, the bed mattress 1 is a bed mattress composed of a support body 2, a core body 3 and a frame body 4, and the support body 2 is made of a rectangular urethane foam, A plurality of concave grooves reaching both ends in the short side direction are provided on the surface, the concave grooves are 30 to 70 mm in depth and 15 to 80 mm in width, and the core body 3 is 10 to 40 mm in thickness and 100 in hardness. It is made of a rectangular urethane foam of ˜300N, the short side is folded in two in the long side direction, both ends of the long side are fitted and supported in one concave groove of the support, and the frame 4 is the support It is provided so that the circumference | surroundings may be enclosed.

  The size of the rectangular support 2 can be set as appropriate according to the size of a generally used bed. For example, the long side is 1500 to 2200 mm, the short side is 800 to 2000 mm, and the thickness is about 70 to 120 mm. The bed mattress can be changed as appropriate according to the usage pattern. In addition, it is preferable that the hardness of the support body 2 is 100-300N by the test based on JISK6400. If the hardness is less than 100N, the retainability of the core in the concave groove cannot be obtained, and if it exceeds 300N, the retainability of the core is also lowered and the cushioning property as a mat rest is also lowered. This is not preferable.

  On one surface of the support body, a plurality of concave grooves reaching both ends in the short side direction where the core body is fitted and supported are provided on almost the entire surface of the support body. It is preferable that the space | interval between the recessed grooves of a support body shall be 10-40 mm. This interval may be provided at a constant interval, but for example, the interval may be changed so that the groove interval at the portion corresponding to the waist with high body pressure is narrowed and the interval between other portions is increased. However, it is preferable that the space | interval of the narrowest part is wider than the thickness of the core used.

  When the core body 3 folded in half is fitted and supported in the concave groove of the support body 2, the core body 3 is not detached from the concave groove of the support body 2 due to the repulsive force of the core body 3, and the core body 3 In order not to inhibit the cushioning property, the depth of the concave groove of the support 2 is set to 30 to 70 mm.

  When the depth of the concave groove of the support body 2 is less than 30 mm, the depth of the concave groove is shallow, and when the folded core body 3 is fitted and supported in the concave groove of the support body 2, the core body There is a possibility that the core body 3 may be detached from the concave groove of the support body 2 due to the repulsive force of 3. In addition, when the depth of the concave groove of the support body 2 exceeds 70 mm, the depth of the concave groove is deep and the upper end surfaces of the core body 3 are pressed by both side surfaces of the concave groove, so that body pressure is applied. At that time, the distortion of the side surface of the core body is suppressed, and the cushioning property is inferior.

  The dimensions of the rectangular core 3 can be set as appropriate according to the usage pattern of the bed mattress. For example, the long side is 800 to 2000 mm, the short side is 200 to 400 mm, and the thickness is about 10 to 40 mm.

  The hardness of the core body 3 is 100 to 300 N in a test based on JIS K6400. In this range, rigidity that does not sag even when body pressure is applied to the core body 3 is obtained, and excellent. Cushioning properties can also be obtained. On the other hand, when the hardness of the core body 3 is less than 100N, the hardness of the core body 3 is low, and the rigidity sufficient to support the human body cannot be obtained. Therefore, when the body pressure is applied to the core body 3, the core body 3 sags and a necessary cushioning property cannot be obtained. Further, when the hardness of the core body 3 exceeds 300 N, the hardness of the core body 3 is high, and when body pressure is applied, the distortion is small and sufficient cushioning properties cannot be obtained. In addition, when the core body 3 is high in hardness, it is difficult to maintain the shape of the core body 3 when the short side is folded in the long side direction, and the weight of the mattress for the bed increases. There is a risk of hindering installation.

  The hardness of the core does not have to be the same for all of the cores used. For example, the core of the part corresponding to the head, waist, and legs of the bed mattress is made harder by making the waist part where the body pressure is most hard and softening the legs and head. A bed mattress with improved body pressure dispersibility can be obtained.

  Further, the thickness of the core body 3 is 10 to 40 mm, and within this thickness range, the required rigidity can be obtained even when body pressure is applied to the core body 3, and excellent cushioning properties are also obtained. It is done.

  On the other hand, when the thickness of the core body 3 is less than 10 mm, the thickness of the core body 3 is insufficient, and it is not possible to obtain the rigidity that can support the human body. Therefore, when body pressure is applied to the core body 3, the resilience due to the bending distortion of the side surface portion cannot be obtained, and the necessary cushioning properties cannot be obtained. Further, when the thickness of the core body 3 exceeds 40 mm, the thickness of the core body 3 is large, and the upper surface of the core body 3 that is distorted when the core body 3 is folded in two becomes too hard, and body pressure is applied. In this case, the distortion is small and sufficient cushioning properties cannot be obtained.

  The width of the groove provided on the surface of the support 2 is 15 to 80 mm. This is because the core body 3 is folded and folded in the long side direction of the short side and fitted and supported in the concave groove of the support body 2. The concave groove width of the support body 2 is the thickness of the core body 3. About double is preferable.

  When the width of the concave groove of the support body 2 is about double the thickness of the core body 3, the core body 3 is folded in half and is fitted and supported in the concave groove of the support body 2. Since the portion is sufficiently hard, rigidity sufficient to support the human body can be obtained. On the other hand, when the groove width of the support body 2 is less than 15 mm, the groove width of the support body 2 is narrower than the thickness of the core body 3 folded in half, and the core body may not be fitted and supported. There is. Moreover, when the groove width of the support body 2 exceeds 80 mm, the groove width of the support body 2 is wider than the thickness of the core body 3 folded in half, and the repulsive force of the core body 3 between the groove grooves There is a risk that the distance between both ends of the core 3 may be increased. Therefore, the hardness of the distorted portion on the upper surface of the core body 3 is insufficient, and there is a possibility that sufficient rigidity to support the human body cannot be obtained.

  In addition, since the core body 3 appropriately fitted and supported in the plurality of concave grooves in the support body 2 exists individually, when the body pressure is applied, the core body 3 can move differently. Therefore, the body pressure of the human body is uniformly dispersed as a whole, and the body pressure dispersibility is excellent.

By providing the frame body 4 so as to surround the periphery of the support body 2, the rigidity of the support body 2 is increased by the frame body 4, and the rigidity of the bed mattress as a whole is increased. It is also possible to prevent the core body 3 to be supported together from shifting in the short side direction of the support body 2. In addition, although a wood, a resin board, etc. can also be used as a frame, it is preferable to use a polyurethane foam in consideration of weight reduction, tactile feeling during use, and the like. The hardness of the frame body 4 is preferably 100 to 400 N in a test based on JIS K6400, and it is preferable that the frame body 4 is harder than the support body 2. At this time, it is preferable that the height of the frame body 4 be lower than the height of the core body 3 fitted and supported in the concave groove of the support body 2, so that when the body pressure is applied to the core body 3. Further, ventilation by the gap generated on the inner surface of the folded core body 3 is not hindered by the frame body 4, and the support of the human body by the core body 3 is not hindered by the frame body 4, which is convenient. . Note that, specifically, it is preferable to lower 10~40mm thickness of the core 3 than the height of the core 3 the height of the frame body 4 is fitted and supported in the concave groove of the support 2.

  As the frame 4, a rectangular polyurethane foam can be used, but is not limited thereto, and is not particularly limited as long as it has cushioning properties.

  Further, as the dimensions of the frame body 4, the frame body 4 provided in the short side direction of the support body 2 has a long side of 800 to 2200 mm, a short side of 30 to 70 mm, and a height of about 70 to 200 mm. The frame 4 provided in the direction has a long side of 1500 to 2200 mm, a short side of 30 to 70 mm, and a height of 70 to 200 mm. In addition, the dimension of a frame can be suitably changed according to the usage pattern of a mattress.

  The support body 2 includes a plurality of concave grooves reaching both ends in the short side direction. However, the core body 3 does not need to be fitted and supported in all the concave grooves, and the core body 3 is not fitted and supported. May be provided. For example, the core bodies 3 are fitted and supported one by one at intervals, or the core body 3 is fitted and supported in all the concave grooves in the area corresponding to the waist where the weight is highest in the mattress. In the region corresponding to the leg portion, it is possible to adopt a form in which the regions are fitted and supported at intervals.

  In addition, it is not necessary to fit and support one core body 3 in one concave groove of the support body, and a plurality of core bodies 3 may be provided. For example, the two core bodies 3 are fitted and supported in parallel in one concave groove of the support body, the three core bodies 3 are fitted and supported in parallel, and the number of the core materials 3 for each concave groove. It is possible to adopt a form in which the change is made.

In addition, the bed mattress 1 is light and easy to transport and install if it is made of only urethane foam as the support body 2, the core body 3 and the frame body 4. Therefore, disposal and separation are easy. Further, the bed mattress 1 has rebound resilience and durability equivalent to a spring mattress.

  In addition, although urethane foam can be used as the core body 3 and the frame body 4, it is preferable to use what consists of a urethane foam crushing chip | tip (what is called a marble foam). This urethane foam crushing tip has a high density even if it is the same hardness as a urethane foam used for a mattress for a general bed, so that it does not easily cause sag and deformation even after a long period of time. .

  Moreover, it is preferable that the space | interval between the concave grooves of the width X of the concave groove of the support body 2 shown in FIG. 4 and the width X of the adjacent concave groove is 10 to 40 mm. When the core body 3 is fitted and supported between the grooves, an appropriate space is maintained between the adjacent core bodies 3 and excellent air permeability can be obtained, and the core bodies 3 are arranged at appropriate intervals. As a result, many core bodies 3 support the human body, so that the body pressure dispersibility is also excellent.

  On the other hand, when the distance is less than 10 mm, the interval between the concave grooves of the support body 2 is narrow, and when the core body 3 is fitted and supported in the concave groove, the space between the adjacent core bodies 3 becomes insufficient. The property is slightly inferior. In addition, when it exceeds 40 mm, the interval between the concave grooves of the support body 2 is wide, and when the core body 3 is fitted and supported in the concave groove, the space between the adjacent core bodies 3 becomes excessive, and the human body is Since the number of supporting cores 3 is reduced, there is a possibility that the cores may fall out of the concave grooves, and there is a possibility that a good supine posture cannot be maintained because excessive body pressure is applied to one core. is there.

  Furthermore, the core bodies 3 fitted and supported in the plurality of concave grooves of the support body 2 do not have to have the same hardness, and the hardness can be appropriately changed depending on the place. For example, the hardness of the core 3 used in the area corresponding to the head, waist, and legs of the mattress can be appropriately changed. At this time, the core used in the area corresponding to the waist of the mattress is changed. If you make it harder than the core used in the area corresponding to the head and legs, you can suppress excessive sinking of the waist that takes the most weight, maintain a natural sleeping posture that is not unreasonable in the body line, Excellent body pressure dispersibility due to the core 3 can be obtained.

  Furthermore, a groove reaching the both ends of the short side direction and / or the long side direction of the support body 2 may be formed on the back surface of the support body 2, and the inside of the mattress can be ventilated by the groove. . In the case where a plurality of grooves are provided, the interval between the grooves is preferably about 150 to 200 mm. The groove shape is a lattice shape, a radial shape, or the like. In the case of the lattice shape, the depth of the groove is 20 to 30 mm. The degree and the width are about 15 to 25 mm. In the case of a radial shape, the diameter is about 20 to 30 mm.

  As a mattress for a bed, it is effective not only for a mattress used by a healthy person but also for a bedridden person, a mattress for preventing pressure ulcers in a hospital, a care facility, and the like.

The perspective view of the mattress for beds concerning the present invention Side view Sectional view of AA in FIG. Explanatory drawing of concave groove of support

Explanation of symbols

1: Mattress, 2: Support, 3: Core, 4: Frame X: Concave groove width of support

Claims (5)

A bed mattress comprising a support, a core and a frame,
The support is made of rectangular urethane foam and has a plurality of grooves on the surface that reach both ends in the short side direction .
The core is made of rectangular urethane foam , the short side is folded in two in the long side direction, and both ends of the long side are fitted and supported in one concave groove of the support,
The bed mattress is characterized in that the frame is provided so as to surround the periphery of the support. The concave groove has a depth of 30 to 70 mm and a width of 15 to 80 mm.
The bed mattress according to claim 1, wherein the core body has a thickness of 10 to 40 mm and a hardness of 100 to 300N. The bed mattress according to claim 1 or 2 , wherein a distance between the concave grooves of the support is 10 to 40 mm. Core used in a region corresponding to the mattress lumbar bed, to any one of claims 1 to 3, characterized in that harder than the core used in a region corresponding to the head and legs Bed mattress as described. 5. The bed according to claim 1 , wherein grooves are formed on the back surface of the support so as to reach both ends in the short side direction and / or the long side direction of the support. mattress.