JP4856630B2 - Body support cushion - Google Patents

Description

  The present invention relates to a cushion for supporting the body.

  Claims priority to Danish patent application PA 2004 00847 filed May 28, 2004, the entire contents of which are hereby incorporated by reference.

  Conventional body supports are made in a wide variety of shapes and sizes and are often adapted to support one or more body parts of a user. As used herein, the term “body support” includes, but is not limited to, any deformable element adapted to support one or more parts of a human or animal in any posture. . Examples of body supports include all kinds of cushions, including mattresses, pillows, and for use in beds, seats and other applications.

  A seat cushion is one type of body support that is available in a number of different shapes and sizes and typically supports the hips, legs, and / or back of a person in a sitting position. ing. While many design issues specific to the seat cushion (and can be handled in a way that is specific to the seat cushion) have been presented, many seat cushion design issues are associated with other types of body support. Associated with ingredients. Accordingly, here, the seat cushion will be described as an example and will be described in order to present problems inherent to the seat cushion.

  The seat cushion can be decorated and / or used for comfort. For example, the seat cushion can be used in a chair having a relatively hard plastic, wood, or metal seating surface. As another example, seat cushions may be used for outfield seats or other seats where people sit for relatively long periods of time (eg, arenas, stadiums, or other places for sporting events, concerts, and other activities). it can. Seat cushions are available in a portable and non-portable form and can be removably or permanently attached to one or more parts of a chair, seat, or other structure.

  Some conventional seat cushions are generally round or square in shape and are made of a single piece of foam. Such seat cushions generally make sitting for a long time more comfortable. However, such cushions usually do not or do not fit well with the various requirements of the user. For example, some users want a seat cushion that fits the specific physical condition of the user, such as a user suffering from hemorrhoids, or a user recovering from surgery, illness, injury or childbirth. There is. In many cases, the pain resulting from these conditions is temporary and can be addressed at least in part by a seat cushion placed on a chair or other seating device. Such cushions may be permanently attached to (eg, become part of) a chair or other seating device adapted to such physical conditions.

  By way of example, U.S. Pat. No. 4,761,843 (the '843 patent) discloses a heel support cushion assembly with a cushion on a support surface, which is a seat cushion assembly. The cushion of the '843 patent is formed by a flexible envelope that is partially filled with fluid and is placed on the support surface under the seated person. The side portion of the container containing the fluid extends below the seated person. The weight of the seated person causes the fluid in the side portion of the container to flow toward the central region of the container, where the fluid is pressed upward under the anus to support the heel. The proper support that the cushion provides depends on the exact position of the person on the cushion and the physical characteristics of the person.

  While seat cushions adapted for a single user having a certain temporary or permanent physical condition are useful, many are not very suitable for users who are not in such a condition. Thus, many seat cushions are either not used or only used temporarily because they lack an alternative seat cushion design. There are also seat cushions that fit well with a particular user's comfort based on the user's dimensions, body shape, hardness or softness preference, and other user characteristics. However, such seat cushions usually do not or do not fit well with the comfort of other users based on their user characteristics.

  In view of the above limitations and other drawbacks of conventional seat cushions, new seat cushions are a welcome addition to the art. For similar and other reasons, body supports adapted to support other areas of the body are also welcomed in the art.

  Certain embodiments of the present invention provide a cushion for supporting a user, wherein the cushion is a body that includes a viscoelastic material and is substantially longer than length, width, length and width. A body having a particularly small thickness and defining a cavity at least partially through the thickness of the body, and a deformable disposed within the body cavity and at least partially filling the cavity And a deformable closure member that can be removed from the cavity of the body, and the cushion is configured so that the body and the closure member when the closure member is disposed within the cavity of the body. Has a first form in which the user is supported and a second form in which the main body supports the user without a closing member.

In one embodiment, a cushion is provided for supporting a seated person's buttocks, the cushion having a density of about 40 kg / m ³ or more and about 130 kg / m ³ or less, and about 30 N or more. A seated person on a viscoelastic material having a hardness of about 80 N or less, a first side substantially facing the buttocks of the seated person, and a side opposite to the first side An annular body having a second side facing away from the first body and defining a cavity extending between the first side and the second side of the annular viscoelastic body An annular body and a closure member removably disposed within the cavity of the annular viscoelastic body, wherein the cushion cooperates with the annular body and the closure member, The first form that supports the person who is seated, and the person who is seated only by the annular body It has a second mode of lifting, the.

Certain embodiments of the present invention provide a cushion for supporting a seated person, the cushion having a density of about 40 kg / m ³ or more and about 130 kg / m ³ or less, and about 30 N or more. An annular body comprising a viscoelastic material having a hardness of about 80 N or less, wherein the annular body defines a cavity at least partially through the annular body; and A removable cover that substantially wraps and extends across the cavity of the annular body.

  Certain embodiments provide a cushion having a cavity, the cushion having a shape that can be described in relation to three orthogonal planes (ie, XY, XZ, YZ planes). The cushion is generally in the XY plane. The cushion is a YZ plane that is perpendicular to the XY plane and parallel to the front / rear direction of the person sitting on the cushion when the cushion is viewed in a direction perpendicular to the XY plane (the top surface of the cushion). And a cavity having a substantially symmetric shape on both sides.

  When viewed in a direction perpendicular to the XY plane, the cavity additionally or alternatively has an asymmetric shape with respect to the XZ plane perpendicular to the XY plane and perpendicular to the front / rear direction of the person sitting on the cushion Can do.

  When viewed in a direction perpendicular to the XY plane, in some embodiments, the cavity has opposite ends of different dimensions (ie, one end is larger than the other end).

  In certain embodiments of the present invention, the cushion effectively relieves or reduces the user's pain, regardless of the position of the person sitting on the cushion, and in some cases, regardless of the user's height. Can be reduced. Further, in certain embodiments, the cushion is adapted for use in one or more front / rear directions of a person seated on the cushion. As previously mentioned, in some embodiments, the cavity is asymmetric on both sides of the XZ plane that is substantially perpendicular to the XY plane in which the cushion is generally disposed. In such embodiments, the central region of the cushion not only provides pain from one location on the user's body, but also different types of pain in two or more different locations (eg, hemorrhoids, another rectal region). It can be used to relieve the source of pain) and at the same time provide sufficient cushioning and support to other body parts that abut the upper surface of the cushion.

  Further information can be obtained and a better understanding of the invention can be obtained by reference to the drawings and the following description.

  Before describing various embodiments of the present invention in detail, the present invention is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the drawings. Please understand. The invention can take other embodiments and can be implemented or carried out in various ways. Further, terms and terms used herein for the orientation of the device or element (eg, terms such as “front”, “back”, “up”, “down”, “top”, “bottom”) simplify the description of the invention. It should be understood that it is only used to do so and does not indicate or imply that the apparatus or element referred to must have a particular orientation. Further, terms such as “first”, “second”, and “third” are used in the specification and claims for purposes of explanation, but indicate or imply relative importance or significance. It is not a thing.

  Various body supports according to some embodiments of the invention are shown in FIGS. 1A-12. The body support shown is a seat cushion and is generally designated 10, 110, 210 and 310 in FIGS. 1A-12. Although the following description refers to seat cushions 10, 110, 210 and 310, the features and elements described and illustrated include, but are not limited to, waist and other back support, head Applicable to any kind of body support, including body support, leg and arm cushions, mattress, and any kind of body support suitable to support part or all of the user's body in any posture Point out what you can do. Many of the features and elements of the present invention find particular application in seat cushions as described herein. However, in other embodiments of the present invention, other types of body supports (including those previously described) are described and shown herein in connection with the illustrated seat cushions 10, 110, 210 and 310. Can have one or more features and elements. In this regard, the seat cushions 10, 110, 210, and 310 shown in FIGS. 1A-12 each have a direction in use (i.e., opposite the generally upward surface on which the user is seated). A generally downward surface). However, seat cushions 10, 110, 210 and 310 and any other body support having any of the features and elements described herein may have any other orientation when in use.

  Referring first to the seat cushion 10 shown in FIGS. 1A-1C, the illustrated seat cushion 10 is a non-planar pattern of upstanding cones 14 (hereinafter “cones”) on the upper side 16 of the seat cushion 10. And has a substantially smooth and planar lower side 18. Further, the seat cushion 10 shown in FIGS. 1A-1C has a torus-like or donut shape, and the central region 22 of the seat cushion 10 has an asymmetric cavity 20. There is.

  The material of at least the body 12 of the seat cushion 10 is a viscoelastic foam having a suitable density and hardness, such as a material marketed under the name Tempur. In the illustrated embodiment of FIGS. 1A-1C, the entire seat cushion 10 is made of the same material.

  1A-1C, the height of the cone 14 is, for example, 5-50 mm, sometimes 10-50 mm, and sometimes 10-25 mm. Further, the cones 14 may have a mutual interval of 30-70 mm or 50 mm, for example.

  In the embodiment of FIGS. 1A-1C, the upper side 16 of the seat cushion 10 has a substantially convex structure. That is, the center portion 24 of the upper side 16 is disposed at a height higher than the peripheral edge portion 26 of the upper side 16. Thus, the central portion 24 of the seat cushion 10 can provide stronger support to the person sitting on the seat cushion 10 than the peripheral edge portion 26. The seat cushion 10 reduces the support outward from the cavity 20 toward the periphery of the seat cushion 10.

  The cavity 20 of the seat cushion 10 shown in FIGS. 1A-1C is asymmetric with respect to an axis that extends through the cavity 20 and is perpendicular to the XY plane in which the seat cushion 10 is generally positioned (eg, the Z axis 28). Further, the illustrated cavity 20 is asymmetric on both sides of the XZ plane perpendicular to the XY plane, but is symmetric on both sides of the YZ plane perpendicular to both the XY plane and the XZ plane. Since the seat cushion 10 is asymmetric on both sides of the XZ plane, the seat cushion 10 is rotated 360 degrees around the Z axis 28 to reach the same orientation with respect to the user and the environment. Thus, for a user seated on the seat cushion 10, the cavity 20 can provide different support depending on the orientation of the seat cushion 10 (eg, for a user seated on the seat cushion 10. (For forward / backward direction). In FIGS. 1A-1C, the cavity 20 is substantially oval. However, another shape such as a pear shape or a triangle may be used.

  The shape and dimensions of the cavity 20 of the seat cushion 10 shown in FIGS. 1A-1C can vary depending on the type of pressure relief intended or desired and the dimensions of the person using the seat cushion 10. In the embodiment of FIGS. 1A-1C (and the other embodiments described herein), the cavity 20 passes completely through the seat cushion 10. However, in different embodiments, the cavity 20 may be a concave depression in the seat cushion 10. Furthermore, the cavity 20 may have a side wall 30 that extends into the seat cushion (eg, downward in the view of FIGS. 1A-1C). Such a side wall 30 may be inclined inward toward the center of the cavity 20 or may be inclined outward from the center of the cavity 20. Whether the cavity 20 penetrates the seat cushion 10 or is instead a concave depression in the central region 22 of the seat cushion 10 depends on the desired cushioning effect. Furthermore, whether the side wall 30 of the cavity 20 is inclined inwardly or outwardly depends on the desired cushion effect. When the cavity 20 is a concave depression, or when the side wall 30 of the cavity 20 is inclined inward, the cushioning effect is increased, and when the cavity 20 penetrates the seat cushion 10, When the side wall 30 is inclined outward, the cushion effect is reduced.

  In some embodiments, the cavity 20 in the central region 22 of the seat cushion 10 extends through the seat cushion 10 and the side walls 30 of the cavity 20 are not inclined inward or outward. However, in other embodiments, the sidewall 30 of the cavity 20 may be sloped either inward or outward. A cone (not shown) of the selected cushion material may be inserted into the cavity 20. The cone may be any elastic material that is suitable for the desired cushioning effect. Thus, the cone can be made of a viscoelastic material, a highly elastic material, a gel-like material, a liquid cushion material, or a gas cushion material. In some embodiments, the cone can be replaced so that the cone cushioning effect can be adjusted depending on the cause of pain experienced by the user and / or the weight and height of the user.

  In some embodiments, the cavity 20 is asymmetric and increases toward the back of the user seated on the seat cushion 10 (eg, rectal, such as associated with pain induced by heels). If mitigation is needed in the area). In some embodiments, the cavity 20 is asymmetric and increases toward the front of the user seated on the seat cushion 10 (e.g., as associated with pain in the vagina rupture resulting from childbirth). If relaxation is necessary in the genital area). Therefore, as described above, by providing the asymmetric cavity 20 with respect to the XZ plane in the central region 22 of the seat cushion 10, the same seat cushion 10 has sufficient cushioning properties and the upper side 16 of the seat cushion 10. It can be used to relieve several different types of pain, rather than pain coming from one area or one state (eg, wrinkles) of the user, while ensuring support of the abutting body part.

  The seat cushion 10 may be provided with an inclination along the YZ direction, whereby the upper side 16 of the seat cushion 10 is inclined with respect to the lower side 18. Accordingly, the upper side 16 of the seat cushion 10 depends on the direction of the user of the seat cushion 10, and the direction toward the rear of the user seated on the seat cushion 10 is in front of the user seated on the seat cushion 10. The height is greater than the direction toward the part or vice versa. A raised cushion on the back side of the user is desirable because the user's weight is applied in a forward direction when the user's pain is in the rectal region. Instead, a raised cushion on the front of the user is desirable because the user's weight is applied backwards when the user's pain is in the vaginal area. The inclination of the seat cushion 10 is sized to form an angle of 0 ° to 30 °. In some embodiments, the inclination of the seat cushion 10 is sized to form an angle between 0 ° and 15 °. In some embodiments, the inclination of the seat cushion 10 is sized to form an angle of 0 ° to 10 °.

  In some embodiments, the asymmetric cavity 20 is located in a portion of the cavity 20 where the larger area of the cavity 20 is raised, and the smaller area of the cavity 20 is lowered in the seat cushion 10. It can be oriented in such a way that it is arranged in the part. If the pain experienced by the user is not apparently in the rectal or vaginal area, the seat cushion 10 is designed differently, i.e. the asymmetric cavity 20 is the smaller of the cavity 20 It may be desirable to design the region so that the region is arranged in the raised portion of the seat cushion 10 and the larger region of the cavity 20 is arranged in the lowered portion of the seat cushion 10. is there.

  Figures 2A-3 illustrate another embodiment of a seat cushion according to the present invention. This embodiment employs almost the same structure as the embodiment described above and shown in FIGS. 1A-1C and has many of the same features. Accordingly, the following description will primarily focus on structures and features that are different from the embodiments described above. For additional information regarding the structure and features of the seat cushion 110 shown in FIGS. 2A-3 and described below, and possible alternatives to the structure and features, see the above description. The structure and features of the embodiment shown in FIG. 2A-3, corresponding to the structure and features of the embodiment of FIGS. 1A-1C, are hereinafter denoted by a series of reference numbers in the 100s.

  The seat cushion 110 shown in FIGS. 2A-2C has a viscoelasticity comprised of upright cones 114 in a non-planar pattern on the upper side 116 of the seat cushion 110 and a lower side 118 that is substantially smooth and planar. With materials. Further, the seat cushion 110 shown in FIGS. 2A to 2C has a toroidal shape or a donut shape, and the center region 122 of the seat cushion 110 has a symmetrical cavity 120.

  The seat cushion 110 shown in FIGS. 2A-2C is also provided with a symmetrical cavity 120. The cavity 120 is mirror symmetric in both the XZ plane and the YZ plane. Because of the symmetry in the XY plane, even if the seat cushion 110 is rotated around the Z axis 128, the cushion effect of the seat cushion 110 is not affected. Thus, for a user seated on the seat cushion 110, the seat cushion 110 may be positioned in one direction or another relative to the front / rear direction of the user seated on the seat cushion 110. Provides the same support performance regardless of which direction it is oriented. In FIGS. 2A-2C, the cavity 120 is circular. However, in other embodiments, different shapes (square, oval, star, etc.) are also included. In the above-described shapes, such as an ellipse, the seat cushion 110 is oriented in one direction or another (e.g., front / rear of a user sitting on the seat cushion 110). Some provide different support performance depending on whether they are oriented at 90 ° to the direction.

  The seat cushion 110 may be provided with an inclination along the YZ direction as described in detail with reference to the embodiment shown in FIGS. 1A-1C. The shape of the cavity 120 shown in FIGS. 2A-2C does not create a substantial difference in the cushioning effect as described above, so that the sloped top surface is for the user sitting on the seat cushion 110. It is advantageous to provide different cushioning effects.

  FIG. 3 is a view of the seat cushion 110 in the XY plane. The upper side 116 of the seat cushion 110 is shown, and the height of the seat cushion 110 is smaller at the periphery of the seat cushion 110. The conical surface of the upper side 116 is also clearly shown. The reason why the cone 114 is not present in the central region 122 of the seat cushion 110 is that the cavity 120 is provided in the central region 122 of the seat cushion 110.

  4A-4B show another embodiment of a seat cushion according to the present invention. This embodiment employs almost the same structure as the embodiment described above and shown in FIG. 1A-3 and has many of the same features. Accordingly, the following description will primarily focus on structures and features that are different from the previously described embodiments. For additional information regarding the structure and features of the seat cushion 210 shown in FIGS. 4A-4B and described below, and possible alternatives to the structure and features, reference is made to the above description. The structure and features of the embodiment shown in FIGS. 4A-4B, which correspond to the structure and features of the embodiment of FIGS. 1A-3, are hereinafter denoted by a series of reference numbers in the 200s.

  Similar to the seat cushions 10, 110, and 210 shown in FIGS. 1A-3, the seat cushion 210 shown in FIGS. 4A and 4B has a generally round toroidal shape and includes a cavity 220 (FIG. 4B) is disposed substantially in the center of the body 212. The cavity 220 may have any desired shape, and in the embodiment of FIGS. 4A and 4B, one end of the cavity 220 has an elongated shape that is larger than the other end.

  The seat cushion 210 shown in FIGS. 4A and 4B may comprise any elastic material, and in some embodiments, an elastic foam. For example, the seat cushion 210 may include a mesh-like or non-mesh viscoelastic foam material.

  The plurality of cones 214 extend from the outer surface of the body 212. However, unlike the cones 14, 114 of the seat cushions 10, 110 shown in FIGS. 1A-3, the cones 214 of the seat cushion 210 shown in FIGS. 4A and 4B extend in many different directions. . In some embodiments, at least some of the cones 214 extend in a direction substantially perpendicular to the portion of the body 212 in which the cones 214 are disposed. Furthermore, in some embodiments (as shown in FIGS. 4A and 4B), substantially all of the cones 214 extend in such directions. It will be understood that the manner in which the pressure is distributed across the user's surface or surfaces varies based on the shape of the cone 214 and the direction in which the cone 214 extends from the body 212 of the seat cushion 210. I want.

  The seat cushion 210 may have a cover 232 (see FIG. 4A) that covers an arbitrary part of the main body 212. For example, the cover 232 may wrap around at least the upper side 216 and the periphery of the seat cushion 210, or may cover substantially all sides of the seat cushion 210. Cover 232 may comprise any material or combination of materials, such as nylon, polyester, and other synthetic materials, cotton, wool, other natural fibers, etc., any of which are woven with cover 232. It may be in the form of a cloth or a non-woven fabric. In some embodiments, cover 232 may be coated with a layer of waterproof or moisture proof material or the like. Such cover and coating materials are conventional in nature and are therefore not further described here.

  Similar to the previously described embodiment shown in FIGS. 1-3, the seat cushion 210 shown in FIGS. 4A and 4B is a plug (not shown) comprising the same or different material as the body 212. May be included). In some embodiments, the closure member comprises an elastic material and may comprise an elastic foam material, such as a mesh or non-mesh viscoelastic foam material, or any other elastic foam material. The occlusion member is received within the cavity 220 of the body 212 and is used when support in the region of the cavity 220 is not required (or when the user wishes to replace the occlusion member with an occlusion member having different material properties). It can be shaped and dimensioned to be removed by a person.

  The seat cushions 10, 110, and 210 shown in FIGS. 1-4B are each generally circular. However, in another embodiment, the seat cushion 10, 110, 210 may have any other desired shape, including but not limited to square, rectangular, or other polygons, irregular shapes, etc. You may have. An example of such an alternative shape is shown in FIGS. 5-12.

  5-12 show a further embodiment of a seat cushion according to the present invention. This embodiment employs almost the same structure as the embodiment described above and shown in FIGS. 1A-4B and has many of the same features. Accordingly, the following description will primarily focus on structures and features that are different from the previously described embodiments. For additional information regarding the structure and features of the seat cushion 310 illustrated in FIGS. 5-12 and described below, and possible alternatives to the structure and features, see the above description. The structure and features of the embodiment shown in FIGS. 5-12, corresponding to the structure and features of the embodiment of FIGS. 1A-4B, are hereinafter denoted by a series of reference numbers in the 300s.

  In the embodiment of the present invention shown in FIGS. 5-12, the seat cushion 310 has a generally flat and planar shape, with a first end 334 having rounded corners 336 and opposite corners. 340 has a second end 338 that is sharpened. However, the seat cushion 310 may have any other shape as long as it is suitable for use as a seat. In some embodiments, the seat cushion 310 may not have a flat and planar shape, but instead may have concave or convex opposite surfaces, corresponding to a user's buttocks and / or legs. May have a shape, and may have any number of peaks, valleys, ridges, grooves, ridges, depressions, and / or other features on any surface of the seat cushion 310, It may have any other symmetric or asymmetric shape or combination of desired shapes. For example, the seat cushion 310 may be a hollow or solid toroid having a center or the like. As another example, the seat cushion 310 may have a generally cubic shape with sharp or rounded corners and / or edges. As yet another example, the seat cushion 310 may be oval or oval. Still other seat cushion shapes are possible and are within the spirit and scope of the present invention.

  A seat cushion 310 illustrated in FIG. 5-12 includes a main body 312, a closing member 342, a sheath 344 (see FIG. 6), and a cover 332 (see FIG. 5-7). The body 312 may be made of any cushioning material or combination of materials including, but not limited to, polyurethane or other types of foam, feathers, wool, shells, beads, and the like. In some embodiments, the body 312 includes a viscoelastic foam. The use of temperature-sensitive viscoelastic foams can increase the adaptability to the user due to the heat of the user's body, often greatly improving the user's comfort Can do. Compared to other types of foam, padding, and other cushion materials, the viscoelastic foam of the body 312 can greatly improve the user's pressure distribution across the body 312. Such improved pressure distribution can reduce the chance of pressure ulcers and improve user support performance.

Any viscoelastic foam material may be used for the body 312, but in many cases a viscoelastic foam having certain material properties can improve performance results. In some embodiments, a viscoelastic foam having a density of about 40 kg / m ³ or higher and / or about 130 kg / m ³ or lower can provide good performance results. In another embodiment, a viscoelastic foam having a density of about 70 kg / m ³ or higher and / or about 110 kg / m ³ or lower can provide good performance results. In yet another embodiment, a viscoelastic foam having a density of about 80 kg / m ³ or more and / or about 90 kg / m ³ or less can provide good performance results.

  Furthermore, viscoelastic foams having a hardness of about 90 N or more and / or about 300 N or less can provide good performance results. In another embodiment, a viscoelastic foam having a hardness of about 110 N or more and / or about 250 N or less can provide good performance results. In yet another embodiment, a viscoelastic foam having a hardness of about 135 N or more and / or about 170 N or less can provide good performance results. In one example, the body 312 is made of a mesh viscoelastic foam to achieve desired cushioning properties such as high heat distribution performance.

  The body 312 may be made of a single unitary foam block, or two or more foam blocks may be bonded or adhesive adhesive, tape, hook and loop fasteners. Or may be joined together by any other method. The main body 312 of the seat cushion 10 shown in FIGS. 5-12 has a single block of viscoelastic foam. As used in the specification and claims, the term “block” refers to a single integral piece of material having any shape or combination of shapes and made in any manner. For example, the block of the main body 312 may be formed or cast by any method, may be shaped by cutting or machining by any method, and may be extruded or pressed. Any combination of such processing methods may be used.

  In an alternative embodiment, the body 312 comprises a mass of granular viscoelastic material held in a cover (not shown) and having any of the body shapes described above. In such embodiments, the cover is many, including but not limited to nylon, polyester, and other types of plastic, natural or synthetic rubber, cotton, wool, and any mixtures or other combinations thereof. Different types of materials can be provided. However, in some embodiments, a cover with a viscoelastic material provides additional advantages for the same reasons described above in connection with the viscoelastic material of the body 312 shown in FIGS. 5-12. provide. Still other types of cover materials are possible and are within the spirit and scope of the present invention. The plurality of viscoelastic pieces are made by crushing or chopping the viscoelastic material, and in certain embodiments the average maximum dimension is from 0.3 cm to 4 cm (smaller or more if desired) Viscoelastic pieces with a large average dimension can also be used). Further, the plurality of viscoelastic parts may be mesh-like or non-mesh-like viscoelastic parts.

  In some embodiments, the body 312 of the seat cushion 310 has a cavity 320 that extends at least partially through the body 312. In this regard, the body 312 is annular in shape. As used in the specification and claims, the term “annular” refers to a body having an internal cavity or indentation that opens to the exterior of the body, not necessarily the exterior shape (eg, round, rectangular, irregular) of the body. Etc.), the location of the cavity in the body (eg, center, off-center location, etc.), the shape of the cavity (eg, round, rectangular, irregular, etc.), whether the cavity penetrates the body completely Partially penetrating (ie, a hole penetrating the body or a depression made on either side), or a cross-sectional shape of the body at any peripheral position (eg, round, oval, rectangular, irregular) Does not indicate or imply that the annular shape is continuous or broken.

  The cavity 320 has a depth (refers to the dimension of the cavity 320 that extends into the body 312 in a direction, such as a direction substantially perpendicular to the surface on which the body 312 is located). . The cavity 320 shown in FIGS. 5-12 is disposed substantially in the center of the body 312 of the seat cushion 310. However, in other embodiments, the cavities 320 can be located in any other region of the seat cushion 310, and in certain embodiments open to one or more peripheral edges of the body 312. Good. For example, the cavity 320 may be disposed at or extend toward the first and / or second ends 334, 338 of the seat cushion 310, in which case different areas for the user It is intended to provide pressure relief (eg, the user's vagina and / or rectal region). Other hollow locations in the body 312 are possible and are within the spirit and scope of the present invention.

  The cavity 320 of the seat cushion 310 can be any desired shape, such as round (see FIGS. 5-12), rectangular or other polygonal, peanut or hourglass, star, elongated, irregular, etc. You may have a shape. The cavity 320 may have any desired depth, for example, a depth that completely penetrates the main body 312 as shown in FIG. It may be a leading cavity that partially penetrates 312 (for example, a depression in the body of the seat cushion 310).

  As previously mentioned, the seat cushion 310 shown in FIGS. 5-10 has a closure member 342, which is the embodiment or the invention described herein. It is not essential to other embodiments. The occlusion member 342 can be made in a shape and size that is removably disposed within the cavity 320. The occlusion member 342 has a length (refers to the dimension of the occlusion member 342 extending in the same direction as the depth of the cavity 320 when the occlusion member 342 is inserted into the cavity 320). The occlusion member 342 can be, but is not limited to, a circle (see FIGS. 5-12), a rectangle or other polygon, a peanut or hourglass, a star, an elongate, as long as it can be placed in the cavity 320. Any shape and size is possible including shapes, irregular shapes, and the like. In some embodiments, the occlusion member 342 has a shape that generally corresponds to the shape of the cavity 320 and / or is dimensioned to fit snugly within the cavity 320. In this regard, a snug fit within the cavity 320 allows the closure member 342 to be retained within the cavity 320 without the aid of another element or structure. Such a fit is created by making at least one dimension of the closure member 342 slightly larger than the cavity 320. In some embodiments, depending on the material of the body 312 and the closure member 342, the body 312 and / or the closure member 342 can be elastically deformed to insert the closure member 342. Alternatively, the closure member 342 can be sized to provide a clearance fit within the cavity 320.

The occlusion member 342 may be made of any cushion material or combination of materials, including but not limited to polyurethane or other types of foam, feathers, wool, shells, beads, and the like. Such a material may be the same as or different from the material of the body 312. In some embodiments, the closure member 342 includes a viscoelastic foam. The use of temperature-sensitive viscoelastic foams can increase the adaptability to the user due to the heat of the user's body, often greatly improving the user's comfort Can do. Furthermore, a viscoelastic foam for the closure member 342 having a density of about 40 kg / m ³ or more and / or about 130 kg / m ³ or less can provide good performance results. In another embodiment, a viscoelastic foam for the closure member 342 having a density of about 70 kg / m ³ or higher and / or about 110 kg / m ³ or lower can provide good performance results. In yet another embodiment, a viscoelastic foam for the closure member 342 having a density of about 80 kg / m ³ or more and / or about 90 kg / m ³ or less can provide good performance results. Also, a viscoelastic foam for the closure member 342 having a hardness of about 30 N or higher and / or about 80 N or lower can provide good performance results. In another embodiment, a viscoelastic foam for the closure member 342 having a hardness of about 35N or more and / or about 70N or less can provide good performance results. In yet another embodiment, a viscoelastic foam for the closure member 342 having a hardness of about 40N or more and / or about 60N or less can provide good performance results. In some embodiments, the occlusion member 342 is made of a reticulated viscoelastic foam to achieve desired cushioning properties such as high heat distribution performance.

  When the closure member 342 is inserted into the cavity 320 of the body 312, the closure member 342 can occupy the desired volume of the cavity 320. For example, the closure member 342 may fill substantially all of the cavity 320. Alternatively, the length of the closure member 342 may be shorter than the depth of the cavity 320 to define a recess in the central region 322 of the upper side 316 and / or the lower side 318 of the seat cushion 310. A seat cushion 310 having such depressions can provide additional user comfort while providing some user support performance due to the cushion material of the closure member 342. In some embodiments, the occlusion member 342 having a length shorter than the depth of the cavity 320 is provided in a number of different locations (ie, depths) within the cavity 320 to provide different degrees of central region support performance to the user. It may be possible to be inserted into. This adjustment capability allows the user to adjust the seat cushion 310 to the user's preference. Further, the occlusion member 342 can be removed and replaced with another occlusion member 342 having a different size (eg, different length) and / or different hardness, density, or other material properties. This adjustment capability further allows the user to adjust the seat cushion 310 to the user's preference.

  As previously mentioned, the body 312 of the seat cushion 310 may comprise a different material than the closure member 342 (ie, a different type of material or the same type of material having different characteristics). As previously mentioned, the closure member 342 may occupy less volume than the entire cavity 320 of the body 312. Accordingly, the hardness of the combination of the main body 312 and the closing member 342 can be considerably different from the hardness of the closing member 342 or the main body 312 alone. In some embodiments, the assembled body 312 and closure member 342 have a hardness of about 50 N or more and / or about 200 N or less. In another embodiment, the assembled body 312 and closure member 342 have a hardness of about 70 N or more and / or about 150 N or less. In yet another embodiment, the assembled body 312 and closure member 342 have a hardness of about 90 N or greater and / or about 120 N or less.

  As previously mentioned, the body 312 of the seat cushion 310 (and the closure member 342, if employed) can be at least partially encapsulated with a covering 344. The main body 312 and the closure member 342 may be wrapped at least partially in the respective covering 344 or in a single covering 344 that covers both the main body 312 and the closing member 342. If a coating is used, the coating 344 includes, but is not limited to, nylon, polyester, and other types of plastic, natural or synthetic rubber, cotton, wool, any mixture or other combination thereof. Many different types of materials may be provided. Still other types of coating materials are possible and are within the spirit and scope of the present invention. The covering 344 may be permeable or impermeable to vapor and / or liquid, may be woven or non-woven, and may be coated with any desired material. Further, in certain embodiments, different portions of the covering 344 comprise different types or forms of materials, such as sewing, adhesive or tacky adhesive materials, hook and loop fastening materials, and the like. They may be connected together in any suitable manner. In the embodiment shown in FIGS. 5-12, the main body 312 and the closure member 342 each have a respective very porous cloth covering 344 that reduces the coefficient of friction against the main body 312 and the closure member 342. Yes. The covering body 344 can improve the insertion / extraction of the closing member 342 into / from the main body 312 and / or the insertion / extraction of the main body 312 and the closing member 342 into the cover 332.

  As also mentioned above, in some embodiments, the seat cushion 310 is provided with a cover 332. The cover 332 may partially or completely enclose the body 312 (and also the closure member 342 if a closure member is used). Cover 332 includes many different types of materials, including but not limited to nylon, polyester, and other types of plastic, natural or synthetic rubber, cotton, wool, and any mixtures or other combinations thereof. May be provided. Still other types of cover materials are possible and are within the spirit and scope of the present invention. The cover 332 of the seat cushion 310 may be permeable or impermeable to vapor and / or liquid, and may be woven or non-woven. Further, the cover 332 may be coated with any desired material.

  In some embodiments, different portions of the cover 332 can comprise different types or forms of material. For example, the upper portion of the cover 332 includes cotton, while the lower side of the cover 332 is a material that suppresses slipping between the seat cushion 310 and the surface on which the seat cushion 310 is placed (eg, natural Or a synthetic rubber sheet or covering, or a plastic material or covering that increases the coefficient of friction. Any combination of cover materials can be used as required.

  One or more fasteners may be used to attach the cover 332 to the main body 312 (and the closure member 342 if a closure member is used). Such fasteners include snaps, hook and loop fasteners, clasps, clips, buttons, strings, etc. used alone or in combination, after the body 312 and closure member 342 are inserted therein, the cover Used to attach two or more portions of 332 together permanently or releasably. Alternatively or additionally, such fasteners may be used to permanently or releasably attach cover 332 to body 312 or closure member 342. For example, the cover 332 shown in FIG. 5-12 includes a zipper 346 that can be operated to open and close the upper and lower portions of the cover 332 around the main body 312 and the closing member 342. The zipper 346 or another fastener may be located anywhere on the cover 332, and is located along the side wall of the cover 332 in the embodiment shown in FIGS. 5-12.

  In some embodiments, the cover 332 is provided with one or more handles 348 for use in carrying the seat cushion 310. For example, the seat cushion 310 shown in FIGS. 5-12 has a handle 348 disposed at the first end 334 of the seat cushion 310. In other embodiments, the handle 348 can be provided at other desired locations.

  In use, the seat cushion 310 may be permanently attached to a frame or another support structure, or may be used as a portable seat cushion 310 that can be placed anywhere the user wants to sit. For example, the seat cushion 310 can be placed in a chair, bench, wheelchair, car seat, outfield seat, or other seating location.

  When the user wants to use the seat cushion 310 shown in FIG. 5-12 with the closing member 342 removed, the user can open the zipper 346 of the cover 332 and take out the main body 312 and the closing member 342. The occlusion member 342 can be removed from the body 312 by grasping the occlusion member 342 and pulling it out of the cavity 320 or pushing it out. Next, the main body 312 is inserted into the cover 332 again, and then the zipper 346 is tightened to enclose the main body 312 in the cover 332.

  Instead, when the user wants to use the seat cushion 310 shown in FIG. 5-12 with the closing member 342 inserted, the user can take out the main body 312 by opening the zipper 346 of the cover 332. The occlusion member 342 can be inserted into the cavity 320 of the body 312, while in certain embodiments, the occlusion member 342 and / or the body 312 is deformed to allow the occlusion member 342 to be inserted. . The assembled main body 312 and closing member 342 are then inserted into the cover 332 and then the zipper 346 is retightened to enclose the main body 312 and closing member 342 in the cover 332.

  The structures and aspects described above and shown in the drawings are presented by way of example only and do not limit the concepts and principles of the invention. Accordingly, it will be apparent to those skilled in the art that various modifications can be made to the elements and their arrangement and arrangement without departing from the spirit and scope of the invention as set forth in the claims.

  For example, the seat cushions 10, 110, 210 shown in FIGS. 1-4B have cones 14, 114, 214 on the outer surface of the seat cushions 10, 110, 210, respectively. It should be understood that the bodies 14, 114, 214 may not necessarily be present in alternative embodiments of the invention. Instead, any of the seat cushions 10, 110, 210 disclosed herein has a smooth, ridged, recessed, or other surface shape, textures, and desired characteristics. You may do it. The use of the cones 14, 114, 214 can provide additional comfort to the user depending on the application. Similarly, the seat cushion 310 shown in FIGS. 5-12 has a substantially smooth outer surface. However, in other embodiments, the body 312 and / or the closure member 332 may have cones on one or more outer surfaces thereof and may be one or more ridged or recessed. It may have an outer surface and may have any other surface shape, texture, and features as desired.

  It is to be understood that the invention disclosed herein extends to all alternative combinations of two or more individual features disclosed herein. For example, each feature and element described and illustrated with respect to the embodiment of seat cushion 310 shown in FIGS. 5-12 may be used in other embodiments disclosed herein (and vice versa). ). All of these different combinations are various alternative aspects of the present invention.

1 is a perspective view of a cushion according to an embodiment of the present invention. FIG. 1 is a perspective view of a cushion according to an embodiment of the present invention. FIG. 1B is a top view of the cushion shown in FIGS. 1A and 1B. FIG. It is a perspective view of the cushion by another embodiment of the present invention. It is a perspective view of the cushion by another embodiment of the present invention. 2B is a top view of the cushion shown in FIGS. 2A and 2B. FIG. It is a side view of the cushion shown to FIG. 2A-2C. It is a perspective view of the cushion by another embodiment of the present invention. FIG. 4B is a perspective view of the cushion shown in FIG. 4A with the cover removed. FIG. 6 is a perspective view of a cushion according to still another embodiment of the present invention. FIG. 6 is a perspective view of the cushion shown in FIG. 5 with a cover removed. FIG. 7 is an exploded perspective view of the cushion shown in FIGS. 5 and 6. FIG. 8 is a top view of a portion of the cover shown in FIGS. 5-7. It is a bottom view of a part of the cover shown in FIG. 10 is a rear view of a portion of the cover shown in FIGS. 8 and 9. FIG. FIG. 11 is a front view of a portion of the cover shown in FIGS. 8-10. FIG. 11 is a side view of a portion of the cover shown in FIGS.

Claims (24)

In the cushion to support the user,
A body comprising a viscoelastic material having a length, a width, a thickness less than the length and width, and a cavity that at least partially penetrates the thickness of the body A body defining a cavity that is asymmetric about an axis extending through the cavity and a plurality of protrusions of viscoelastic material that are integral with the body;
A deformable closure member comprising a foam material disposed within the body cavity and at least partially filling the cavity, wherein the deformable closure member is removable from the body cavity. And
The cushion includes a first form in which the main body and the closing member support the user when the closing member is disposed in the cavity of the main body, and the main body supports the user without the closing member. And a second form.   The cushion according to claim 1, wherein the body has an annular shape. The main body includes a viscoelastic material having a density of 40 kg / m ³ or more and 130 kg / m ³ or less,
The cushion according to claim 1, wherein the viscoelastic material further has a hardness of 90N or more and 300N or less. The main body has a predetermined shape,
The cushion of claim 1, wherein the body comprises at least one block of viscoelastic material defining the shape of the body. Wherein the plurality of projections are extending the Activity from the outer surface of the body, cushion according to claim 1.   The cushion according to claim 1, wherein the closing member includes a viscoelastic material. The closing member has a predetermined shape,
The cushion according to claim 1, wherein the closure member comprises at least one block of viscoelastic material defining a shape of the closure member. The cavity has a length extending in a direction penetrating the thickness of the main body,
The cushion according to claim 1, wherein the closure member occupies a portion of the cavity having a length smaller than the length when mounted in the cavity.   The body has a first surface that is flat and a second surface opposite the first surface, the thickness of the body being defined therebetween. Cushion as described in.   The cushion according to claim 1, further comprising a cover that wraps around the main body and the closing member and extends across the cavity of the main body.   The cushion according to claim 10, wherein the cover is removable from the main body and the closing member. In the cushion to support the buttocks of the person who is seated,
An annular body,
A viscoelastic material having a density of 40 kg / m ³ to 130 kg / m ³ and a hardness of 90 N to 300 N,
A first side facing the buttocks of the seated person;
A second side facing away from the seated person, on the opposite side of the first side, and
Defining a cavity extending between a first side and a second side of the annular viscoelastic body and a plurality of protrusions of viscoelastic material integral with the body , wherein the cavity is a concave shape of the body. An annular body defined by a recess, the recess having a side wall inclined toward the center of the cavity;
A closure member including a foam material, removably disposed within the cavity of the annular viscoelastic body,
In the cushion, the annular main body and the closing member cooperate to support the seated person, and the annular body alone supports the seated person. And a cushion having a form.   The cushion according to claim 12, wherein the cavity penetrates the annular body from the first side to the second side. The annular body has a predetermined shape,
13. A cushion according to claim 12, wherein the annular body comprises at least one block of viscoelastic material defining the shape of the annular body.   The cushion according to claim 12, wherein the annular body has a plurality of protrusions extending from an outer surface of the annular body.   The cushion according to claim 12, wherein the closing member includes a viscoelastic material. The closing member has a predetermined shape,
13. The cushion of claim 12, wherein the occluding member comprises at least one block of viscoelastic material that defines the shape of the occluding member. The cavity has a length at least partially penetrating the annular body;
13. The cushion of claim 12, wherein the closure member occupies a portion of the cavity that is less than the length when mounted in the cavity.   The cushion according to claim 12, wherein the cover is removable from the annular main body and the closing member.   The cushion according to claim 12, wherein the first and second sides of the annular body are flat. In the cushion to support the person who is seated,
An annular body including a viscoelastic material having a density of 40 kg / m ³ or more and 130 kg / m ³ or less and a hardness of 90 N or more and 300 N or less, at least partially penetrating the annular body An annular body defining a cavity to be defined, the cavity being defined by a concave depression in the body, wherein the depression has a sidewall inclined toward the center of the cavity;
A removable cover that wraps around the annular body and extends across the cavity of the annular body,
The annular body includes a plurality of cone-shaped protrusions of viscoelastic material that are integral with the annular body and extend from an outer surface of the annular body. The annular body has a predetermined shape,
24. The cushion of claim 21, wherein the annular body comprises at least one block of viscoelastic material that defines the shape of the annular body.   24. The closure member of claim 21, further comprising a closure member having a shape and dimensions that can be disposed within the cavity of the annular body, the closure member being removable from the annular body. cushion.   24. A cushion according to claim 23, wherein the closure member comprises a viscoelastic material.

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