JP6284499B2 - Fluid-filled rug - Google Patents

Description

  The present invention relates to a fluid-filled rug used for a rug, a cushion, a pillow, or an insole for shoes.

  Conventionally, fluid-filled rugs filled with a fluid such as air or water have been widely used. These fluid-filled rugs are characterized by excellent body pressure dispersion, and are therefore used in medical institutions and nursing / welfare facilities for the purpose of suppressing the occurrence of pressure ulcers for users who are lying for a long time. Is done.

  However, in such a fluid-filled rug, when the area to which the load is applied is small, only the portion to which the load is applied is deformed abruptly, which may cause bottoming out. This bottoming refers to a state in which a user's bone protruding portion or the like is in contact with the floor surface under the rug, which not only causes poor sleeping comfort but also causes or increases a pressure ulcer.

  Therefore, as a fluid-filled rug that can prevent rapid deformation in order to solve the above-described problems, Patent Document 1 discloses that a hexagonal shape is formed by connecting two non-breathable sheets so that a large number of hexagons are connected. There is described an air covering in which a large number of small air chambers connected to each other through unsealed portions of hexagonal vertices are formed by sealing with a sealing pattern composed of each side excluding the vertices. Furthermore, in Patent Document 1, it is necessary to use a plurality of these air rugs stacked together, and when stacking air rugs, put them in a bed box sheet or connect the surroundings partially with snap buttons, belts, etc. However, it is described that the air mat does not interfere strongly between the layers.

Japanese Patent No. 3560033

  In the air rug described in Patent Document 1, when the user lies on the rug, the user's body is supported by a large number of small air chambers. The air rug follows the load from the user and the shape of the body. The chamber is pushed and deformed. At this time, the air passage portion connecting the adjacent small air chambers may be blocked by bending of the small air chamber, and the fluid movement between the small air chambers may be hindered. It was. For this reason, the internal pressure of the air covering partially increases to increase the contact pressure, and the body pressure dispersion becomes unstable, so that the feeling of use may be impaired. This tendency was particularly remarkable when the fluid was used in a low expansion state with a small amount of fluid filling.

  In addition, when a plurality of air rugs described in Patent Document 1 are used by being laminated, each layer is only partially fixed. It may become unstable and the usability may be impaired.

  The present invention has been devised in view of the above-mentioned points, and its purpose is to prevent a partial increase in internal pressure inside the rug caused by hindering the movement of fluid between small air chambers, and stable body pressure dispersion. An object of the present invention is to provide a fluid-filled rug having a new structure capable of providing a feeling of use.

  In order to solve the above problems, the fluid-filled rug of the present invention is configured such that the first surface layer sheet, at least one intermediate sheet and the second surface layer sheet are laminated in this order and the outer peripheral portion is sealed. A fluid-filled rug used by filling a fluid between each of the first and second surface sheets and at least one intermediate sheet, wherein each of the first and second surface sheets is at least one The intermediate sheet is bonded with an adhesive pattern having a polygonal shape connected to each other, and the adhesive pattern has an unbonded portion at a portion corresponding to the apex of the polygonal shape, and the side of the polygonal shape And a fluid cell is formed in a portion surrounded by the linear adhesive portion by adhering the adhesive pattern, and a fluid adjacent to the non-adhered portion is formed. Phase cells And a communication portion formed between the first surface layer sheet and the at least one intermediate sheet is formed of a fluid cell formed between the second surface layer sheet and the at least one intermediate sheet. The communicating portion formed between the second surface layer sheet and the at least one intermediate sheet is opposed to a fluid cell formed between the first surface layer sheet and the at least one intermediate sheet. Placed in position.

  The first surface layer sheet and the intermediate sheet are bonded with an adhesive pattern having a polygonal shape connected to each other, and a fluid is filled between the first surface layer sheet and the intermediate sheet, whereby the first fluid chamber is formed. It is formed. This bonding pattern has an unbonded portion at a portion corresponding to the apex of the polygonal shape, and has a linear bonding portion at a portion corresponding to the side of the polygonal shape. Therefore, in the first fluid chamber, the first fluid cell is formed in a region surrounded by the linear adhesive portion, and the first fluid cell adjacent to the non-adhered portion is in fluid communication with each other. The communication part is formed. Similarly, the second surface layer sheet and the intermediate sheet are also bonded with an adhesive pattern having a polygonal shape connected to each other, and a fluid is filled between the second surface layer sheet and the intermediate sheet to thereby form the second surface sheet. A fluid chamber is formed. This adhesion pattern is also the same as the above-described configuration. Therefore, in the second fluid chamber, the second fluid cell is formed in the region surrounded by the linear adhesion portion, and the second fluid cell is adjacent to the non-adhesion portion. A second communication portion is formed that fluidly communicates the two fluid cells with each other. The first communication part is disposed at a position facing the second fluid cell, and the second communication part is also disposed at a position facing the first fluid cell. As a result, even when the fluid cell on the side of one fluid chamber is deformed in response to a user's load, the communicating part connected to the deformed fluid cell is supported by the other fluid cell facing the other. Therefore, it is difficult to bend and block. In addition, when the fluid cell is in a highly expanded state by increasing the fluid filling rate of the rug, or when some of the fluid cells are in a highly expanded state under the load of the user, the fluid cell is expanded. Since the contraction or bending of the communication part is suppressed by the tensioning action of the intermediate sheet constituting the fluid cell facing or adjacent fluid cell, the communication part is less likely to be blocked. Therefore, the fluid movement between the fluid cells in the fluid chamber is not hindered, so that a fluid-filled rug with a stable feeling of use can be obtained without increasing the contact pressure and unstable body pressure dispersion. It is done.

  In the present invention, since the adhesive pattern is composed of linear adhesive portions, when a user's load is applied, the surface layer sheet on the periphery of the adhesive portion rises along the linear adhesive portions. The linear adhesive part enters the inside and does not appear on the surface layer sheet, or the adhesive width of the adhesive part that appears on the surface layer sheet is narrowed. Therefore, the protruding part of the user's body does not enter the adhesive part on the surface layer sheet, and the user's body is difficult to contact the adhesive part that is hard and has a low body pressure dispersion effect. Can be obtained. In addition, the fluid-filled rug of the present invention has a fluid chamber partially divided into a plurality of fluid cells in advance by a continuous adhesion pattern, so that uneven creases such as creases are not easily generated in the rug, and the fluid to be filled Even in the case where the amount is small, the rug itself has an appropriate tension and is easy to handle.

  The fluid-filled rug of the present invention is configured by laminating a first surface layer sheet, at least one intermediate sheet, and a second surface layer sheet in this order and sealing an outer peripheral portion. A fluid-filled rug used by filling a fluid between each of the two surface sheets and at least one intermediate sheet, wherein each of the first and second surface sheets and the at least one intermediate sheet are: It is bonded with an adhesive pattern having a polygonal shape connected to each other, and the adhesive pattern has an unbonded portion at a portion corresponding to the apex of the polygonal shape, and a portion corresponding to the side of the polygonal shape. It has a linear adhesive part, and by adhering the adhesive pattern, fluid cells are formed in the part surrounded by the linear adhesive part, and adjacent fluid cells are fluidized to each other in the non-adhered part. Communication The fluid cells formed between the first surface layer sheet and the at least one intermediate sheet are arranged at positions facing the communication portion formed between the second surface layer sheet and the at least one intermediate sheet. The fluid cell formed between the second surface layer sheet and the at least one intermediate sheet is disposed at a position facing the communication portion formed between the first surface layer sheet and the at least one intermediate sheet. Yes.

  The first surface layer sheet and the intermediate sheet are bonded with an adhesive pattern having a polygonal shape connected to each other, and a fluid is filled between the first surface layer sheet and the intermediate sheet, whereby the first fluid chamber. Is formed. This bonding pattern has an unbonded portion at a portion corresponding to the apex of the polygonal shape, and has a linear bonding portion at a portion corresponding to the side of the polygonal shape. Therefore, in the first fluid chamber, the first fluid cell is formed in the region surrounded by the linear bonded portion, and the first fluid cells adjacent to the non-bonded portion are in fluid communication with each other. A communication part is formed. Similarly, the second surface layer sheet and the intermediate sheet are also bonded with an adhesive pattern having a polygonal shape connected to each other, and a fluid is filled between the second surface layer sheet and the intermediate sheet to thereby form the second surface sheet. A fluid chamber is formed. This adhesion pattern is also similar to the above-described configuration. Therefore, in the second fluid chamber, a second fluid cell is formed in a region surrounded by the linear adhesion portion, and the second fluid cell is adjacent to the non-adhesion portion. A second communication portion is formed which fluidly communicates the fluid cells. The first fluid cell is disposed at a position facing the second communication portion, and the second fluid cell is also disposed at a position facing the first communication portion. As a result, even when the fluid cell on the side of one fluid chamber is deformed under the load of the user, the other fluid cell that faces the communicating portion connected to the deformed fluid cell supports this communicating portion. For this reason, the communication portion is difficult to bend and difficult to close. In addition, even when the fluid filling rate of the rug is increased to make the fluid cell in a highly expanded state, or when some of the fluid cells are in a highly expanded state due to the load of the user, the intermediate portion constituting the fluid cell The contraction or bending of the communicating portion facing the expanded fluid cell or the adjacent communicating portion is suppressed by the stretching action of the sheet, so that the communicating portion is hardly blocked. Therefore, even during use, the fluid movement between the fluid cells is not hindered, and a fluid-filled rug with a stable feeling of use can be obtained. In the present invention, since the adhesive pattern is composed of linear adhesive portions, when a user's load is applied, the surface layer sheet on the periphery of the adhesive portion rises along the linear adhesive portions. The linear adhesive part enters the inside and does not appear on the surface layer sheet, or the adhesive width of the adhesive part that appears on the surface layer sheet is narrowed. Therefore, the protruding part of the user's body does not enter the adhesive part on the surface layer sheet, and the user's body is difficult to contact the adhesive part that is hard and has a low body pressure dispersion effect. Can be obtained. In addition, the fluid-filled rug of the present invention has a fluid chamber partially divided into a plurality of fluid cells in advance by a continuous adhesion pattern, so that uneven creases such as creases are not easily generated in the rug, and the fluid to be filled Even in the case where the amount is small, the rug itself has an appropriate tension and is easy to handle.

  In the fluid-filled rug of the present invention, it is also preferable that the polygonal shape in the adhesion pattern includes a plurality of polygonal shapes having different numbers of angles or polygonal shapes having different lengths on one side. Thereby, the body pressure dispersion | distribution performance according to the shape and use condition of a user's body part, and a usability | use_condition can be improved.

  In the fluid-filled rug of the present invention, each adhesive pattern for bonding the first surface layer sheet and at least one intermediate sheet is different from each adhesive pattern for bonding the second surface layer sheet and at least one intermediate sheet. It is also preferable. Thereby, it can be set as the fluid filling rug provided with the usability | use_condition (specifically a touch is hard or soft) etc. which are different in the 1st surface layer sheet side and the 2nd surface layer sheet side.

  In the fluid-filled rug of the present invention, at least one through-hole is provided in at least one intermediate sheet, the fluid filled between the first surface layer sheet and the at least one intermediate sheet, and the second It is also preferable that the fluid filled between the surface layer sheet and the at least one intermediate sheet can be circulated through at least one through hole. Thereby, since the first fluid chamber and the second fluid chamber are in communication, the fluid chamber of the entire fluid-filled rug can be filled with the fluid by filling one of the fluid chambers with the fluid. .

  In the fluid-filled rug of the present invention, it is also preferable that at least one through hole is arranged in the fluid cell. Since the fluid cell in which the through hole is arranged is filled with more fluid than the portion other than the fluid cell, each of the first surface layer sheet or the second surface layer sheet becomes a through hole in the fluid cell. Since there is no contact and the through hole is difficult to be sealed, fluid filling between fluid chambers communicating with each other through the through hole is possible when the fluid is filled. Further, since the fluid can stably enter and exit the mutual fluid chamber at the time of use, a stable feeling of use can be obtained.

  Further, in the fluid-filled rug of the present invention, at least one intermediate sheet is configured by laminating a first intermediate sheet and a second intermediate sheet, and the first surface layer sheet is bonded to the first intermediate sheet, It is also preferable that the surface sheet of 2 is bonded to the second intermediate sheet. Thereby, since each of the first fluid chamber and the second fluid chamber can be formed by two sheets, the fluid-filled rug of the present invention can be obtained only by manufacturing and overlapping each fluid chamber separately. . Moreover, when superimposing, the position of each fluid cell and each communicating part can be finely adjusted, so that the rug can be easily manufactured.

  In addition, the fluid-filled rug of the present invention preferably has 3 to 8 polygonal corners in the adhesion pattern. Thereby, a polygonal shape suitable as an adhesive pattern is selected.

  In the fluid-filled rug of the present invention, the polygonal shape in the adhesion pattern is preferably a parallelogram. As a result, the first fluid cell and the second communication portion are reliably disposed at positions facing each other, and the second fluid cell and the first communication portion are reliably disposed at positions facing each other. Can be obtained stably. Furthermore, by making the adhesive pattern a parallelogram, all the linear adhesive parts constituting the first fluid cell intersect with all the linear adhesive parts constituting the second fluid cell in plan view. Since the linear adhesive portion constituting the first fluid cell and the linear adhesive portion constituting the second fluid cell act like braces, the load on the user's body is reduced. It is possible to obtain a fluid-filled rug that is stably received and supported and difficult to bottom out and has a more stable feeling of use.

  Further, in the fluid-filled rug of the present invention, the communicating portion is located at a position facing the portion where the cell height of the fluid cell becomes highest when the fluid cell to which the communicating portion is opposed is filled with fluid and expanded. It is also preferred that they are arranged. Each of the first communication portion and the second communication portion faces the fluid cell, and the communication portion is arranged at a position facing the apex portion at the time of expansion of the opposite fluid cell. When it receives, the effect | action by which a communication part is supported by the fluid cell which opposes is exhibited more effectively. Therefore, it is possible to obtain a fluid-filled rug that is less likely to be blocked by bending or the like of the communication portion.

  In the fluid-filled rug of the present invention, it is also preferable that a thick shaft portion having an arcuate tip is formed at at least one end of the linear bonding portion in the bonding pattern. Thereby, the stress concerning the edge part of a linear adhesion part is disperse | distributed suitably, and the failure | damage of the boundary part of the edge part of an adhesion part and a surface layer sheet | seat can be prevented.

  In addition, the fluid-filled rug of the present invention includes the second surface layer sheet and the at least one intermediate sheet in all the linear bonding portions in the bonding pattern for bonding the first surface layer sheet and the at least one intermediate sheet. It is preferable that they are arranged at positions that intersect with all the linear adhesive portions in the adhesive pattern to be bonded in plan view. As a result, the linear adhesive part on the first surface sheet side and the linear adhesive part on the second surface sheet side act like a brace, and stably receive and support the load of the user's body. Therefore, it is difficult to bottom out, and a fluid-filled rug having a stable feeling can be obtained. In addition, a portion where the adhesive portion on the first surface sheet side and the adhesive portion on the second surface sheet side overlap in plan view can be the only intersection, and the user should be in contact with the intersection. However, since the region where the effect of dispersing body pressure generated by arranging both the adhesive portions to overlap each other can be minimized, a fluid-filled rug having a better feeling of use can be obtained.

  Further, the fluid-filled rug of the present invention bonds the linear bonding portion in the bonding pattern that bonds the first surface layer sheet and at least one intermediate sheet, and the second surface layer sheet and at least one intermediate sheet. It is also preferable that the crossing angle in a plan view with the linear bonding portion in the bonding pattern is 90 ° ± 30 °. This makes it difficult for the protruding part of the user's body lying in the direction of the length of the rug to enter the linear adhesive part, and the linear adhesive part with poor body pressure dispersibility and the user's body come into contact with each other. Since it becomes difficult, a more comfortable feeling of use can be obtained. In addition, the crossing angle when the linear bonding part is a curve is an angle at which the tangents of the bonding parts passing through the intersection intersect.

  Moreover, it is preferable that the rug, cushion and pillow of the present invention each comprise the above-described fluid-filled rug. Thereby, a suitable usage form is selected.

ADVANTAGE OF THE INVENTION According to this invention, the fluid filling rug which has the following outstanding effects can be provided.
(1) It is provided with a plurality of fluid cells excellent in dispersion of the body pressure of the user, and fluids between the plurality of fluid cells are in communication with each other, and movement of the fluid filled therein can be prevented even during use. Therefore, it has a stable feeling of use and an excellent body pressure dispersing action.
(2) Since the protruding part of the user's body does not easily enter the adhesive part applied on the surface layer sheet, the user's body is hard to contact the adhesive part that is hard and has a low body pressure dispersion effect, and is more comfortable to use. Is obtained.
(3) Since the fluid chamber is formed by the adhesive portion applied on the surface layer sheet, there is no occurrence of uneven wrinkles such as broken lines on the surface layer sheet, and there is a site where the hardness is felt or hit. There is no comfort.

It is a perspective view which shows the state which put the fluid into the fluid filling rug of 1st Embodiment. It is a partial exploded view of the fluid filling rug of a 1st embodiment. It is a partial expanded front view of the fluid filling rug of a 1st embodiment. It is the (a) AA sectional view taken on the line of FIG. 3, (b) BB sectional drawing, and (c) CC sectional view. FIG. 4 is a cross-sectional view taken along line A-A, a cross-sectional view taken along line BB, and a cross-sectional view taken along line CC in FIG. 3. It is a figure which shows the other example of an adhesion pattern. It is a figure which shows the other example of an adhesion pattern. It is a figure which shows the other example of an adhesion pattern. It is a figure which shows the other example of an adhesion pattern. It is a figure which shows the example of the shape of a linear adhesion part. It is a perspective view which shows the state which put the fluid into the fluid filling rug of 2nd Embodiment. It is a partial exploded view of the fluid filling rug of a 2nd embodiment. It is a partial expansion front view of the fluid filling rug of a 2nd embodiment. It is the (a) AA sectional view taken on the line of FIG. 13, (b) BB sectional drawing, and (c) CC sectional view. It is a figure which shows a part of (a) shape and dimension of a linear adhesion part of a fluid filling rug in Example 1, and (b) adhesion pattern.

  As shown in FIG. 1, in the fluid-filled rug 1 according to the first embodiment of the present invention, the peripheral edge 6 on the outer periphery of the stacked sheets is sealed, and the fluid filled inside does not escape from the peripheral edge 6. It is formed as follows. As shown in FIG. 2, the fluid-filled rug according to the first embodiment includes four sheets, a first surface layer sheet 2, a first intermediate sheet 3a, a second intermediate sheet 3b, and a second surface layer sheet 4. Flexible sheets are laminated in this order. As shown in FIG. 4, the fluid-filled rug 1 is filled with a fluid between the first surface sheet 2 and the first intermediate sheet 3a to form the first fluid chamber 200, and the second A fluid is also filled between the surface layer sheet 4 and the second intermediate sheet 3b to form a second fluid chamber 400. As described above, the fluid-filled rug 1 includes two layers of fluid chambers, the first fluid chamber 200 and the second fluid chamber 400.

  As shown in FIGS. 2-4, the 1st surface sheet 2 and the 1st intermediate sheet 3a are adhere | attached by the adhesive pattern which has the polygonal shape connected mutually. The bonding pattern has a linear bonding portion 20 at a portion corresponding to the side of the polygonal shape, and has an unbonded portion 200C at a portion corresponding to the vertex of the polygonal shape. As a result, when the first fluid chamber 200 is formed by filling the fluid between the first surface layer sheet 2 and the first intermediate sheet 3a, the four adhesive portions 20 adjacent to the fluid chamber 200 are formed. The first fluid cell 200A having a substantially rhombus shape partially surrounded with the first fluid cell 200 and the first communication portion 200B that fluidly communicates adjacent fluid cells with each other are formed (see FIGS. 3 and 4). The communication portion 200B is formed in a region including the non-bonded portion 200C. In the present embodiment, as shown in FIG. 3, adjacent polygon-shaped non-bonded portions 200C in the bonding pattern face each other. A communication portion 200B is formed in the communication portion. The communication portion 200B communicates with fluid cells 200A adjacent in four directions, and is configured so that the fluid in the fluid chamber 200 can move.

  Similarly, the 2nd surface layer sheet 4 and the 2nd intermediate sheet 3b are pasted up by the adhesion pattern which has the polygonal shape connected mutually. The bonding pattern has a linear bonding portion 40 at a portion corresponding to the side of the polygonal shape, and has an unbonded portion 400C at a portion corresponding to the vertex of the polygonal shape. As a result, when the fluid is filled between the second surface layer sheet 4 and the second intermediate sheet 3b to form the second fluid chamber 400, the four adhesive portions 40 adjacent to the fluid chamber 400 are formed. The second fluid cell 400A having a substantially rhombus shape partially surrounded by the second fluid cell 400A and the second communication portion 400B that fluidly communicates adjacent fluid cells with each other are formed (see FIGS. 3 and 4). Further, the communication portion 400B is formed in a region including the non-bonded portion 400C. In this embodiment, as shown in FIG. 3, adjacent polygon-shaped non-bonded portions 400C in the bonding pattern face each other. The communication part 400B is formed in the part to do. The communication part 400B communicates with fluid cells 400A adjacent in four directions, and is configured so that the fluid in the fluid chamber 400 can move.

  In FIG. 3, the configuration on the first surface layer sheet 2 side is indicated by a solid line, and the configuration on the second surface layer sheet 4 side is indicated by a broken line. As shown in FIG. 3, the first communication part 200B described above is arranged at a position facing the second fluid cell 400A, and the second communication part 400B is also a position facing the first fluid cell 200A. Is arranged. In the present embodiment, the first fluid cell 200A is disposed at a position facing the second communication part 400B, and the second fluid cell 400A is also disposed at a position facing the first communication part 200B. Has been. By arranging the adhesive pattern in this way, even when the fluid cell 200A or 400A of one fluid chamber 200 or 400 is deformed under the load of the user as shown in FIGS. Since the communication part 200B or 400B directly connected to the fluid cell 200A or 400A is supported by the fluid cell 400A or 200A of the other fluid chamber 400 or 200 facing the fluid cell 200A or 400A, the shape is maintained and it is difficult to block. Further, when the fluid cell 200A or 400A expands, contraction and bending of the opposing communication portion 400B or the adjacent communication portion 200B are suppressed by the expansion action of each intermediate sheet constituting the fluid cell 200A or 400A. Even when the cell 200A or 400A is in a highly expanded state, the communication part 400B or 200B is hardly blocked. Therefore, since the fluid movement between the fluid cells is not hindered, the fluid-filled rug 1 having a stable feeling of use can be obtained without increasing the contact pressure of the fluid chamber and unstable body pressure dispersion. can get. In addition, in the range which does not impair the effect of this invention as the fluid filling rug 1, all the communication parts 200B or 400B do not need to be arrange | positioned in the position facing the fluid cell 400A or 200A, and one fluid cell For 200A or 400A, it is only necessary that at least one communication part 200B or 400B directly connected to the fluid cell faces the other fluid cell 400A or 200A. Similarly, the fluid cell 200A or 400A does not necessarily have to be disposed at a position facing the communication portion 400B or 200B, and the fluid cell 200A or 400A has the same number of the fluid cell 200A or 400A. What is necessary is just to be arrange | positioned in the position facing at least 1 communicating part 400B or 200B directly connected with the fluid cell.

  Further, the position where the first communication portion 200B faces the second fluid cell 400A is the height of the second fluid cell 400A when the second fluid cell 400A is filled with the fluid and swells. It is preferable that the first communication portion 200B is disposed so as to face the portion where 400H (see FIG. 4) is the highest. On the other hand, with respect to the position where the second communication portion 400B faces the first fluid cell 200A, the cell height of the first fluid cell 200A when the first fluid cell 200A is filled with the fluid and expanded. It is preferable that the second communication portion 400B is disposed so as to face the portion where 200H (see FIG. 4) is the highest. Thereby, when receiving the load of the user, the action supported by the fluid cell 400A or 200A facing the communication part 200B or 400B is more effectively exhibited, so the bending of the communication part 200B or 400B As a result, a fluid-filled rug that is less likely to be blocked by, for example, is obtained.

  6 to 9 show other examples of adhesive patterns. 6 to 9, the configuration on the first surface layer sheet 2 side is indicated by a solid line, and the configuration on the second surface layer sheet 4 side is indicated by a broken line, as in FIG. 3 showing the adhesion pattern of the present embodiment. The horizontal direction in the figure corresponds to the length direction L of the fluid-filled rug, and the vertical direction in the figure corresponds to the width direction W of the fluid-filled rug. The adhesive pattern shown in these figures can be arranged continuously over the entire rug or at least partially on the rug.

  By selecting various adhesion patterns as shown in FIGS. 6 to 9, the fluid cells 200A and 400A, the unbonded portions 200C and 400C, and the communication portion 200B composed of the regions including the unbonded portions 200C and 400C. And 400B change respectively. For example, in the adhesion pattern applied to the first surface layer sheet 2 and the first intermediate sheet 3a shown in FIG. 6A, the fluid cell 200A is formed in a trapezoidal shape, and the unbonded portion 200C is linear and It is an L-shaped portion (a portion corresponding to the apex of the trapezoid), and the communication portion 200B is formed in a substantially rhombus shape in a portion where adjacent polygonal unbonded portions 200C face each other. Further, the communication part 200B is formed in a triangular shape at the end of the adhesive pattern. Further, in the bonding pattern shown in FIG. 7A, the fluid cell 200A is formed in a hexagonal shape, and the non-bonded portion 200C is a square-shaped portion (a portion corresponding to the vertex of the hexagon). The portion 200B is formed in a substantially triangular shape in a portion where adjacent polygonal unbonded portions 200C face each other. Further, the non-bonded portion 200C may be formed at a position other than the end portion of the adjacent one of the bonded portions 20 in the bonding pattern and the end portion of the other bonded portion 20 closest to the end portion. . Specifically, for example, when the adhesive pattern applied to the first surface layer sheet 2 and the first intermediate sheet 3a in FIG. 9A is viewed, the non-adhered portion 200C in this adhesive pattern has a polygonal shape. Although it is a part corresponding to the apex, it includes one that is formed near the end of one adjacent adhesive part 20 and the center of the line segment of the other adhesive part 20 that is closest to the end. ing. A communication portion 200B is also formed in the region including such an unbonded portion 200C, and each communication portion 200B has an action of allowing the adjacent fluid cells 200A to communicate with each other.

  As shown in FIG. 3, in the fluid-filled rug 1 according to the present embodiment, the first surface layer sheet 2 and the first intermediate sheet 3a are bonded with an adhesive pattern having a rhombus shape (rectangle) connected to each other. The portion corresponding to the apex of the rhombus has an unbonded portion 200C, and the bonding pattern of the second surface layer sheet 4 and the second intermediate sheet 3b is the same. Thus, although the same adhesion pattern or a symmetrical adhesion pattern may be selected on the first surface layer sheet 2 side and the second surface layer sheet 4 side (FIGS. 6, 7, and 9 (c) to ( e)), as shown in FIG. 8 and FIGS. 9A to 9B, it is also possible to select different patterns on the first surface layer 2 side and the second surface layer 4 side. Thereby, the fluid filling rug provided with a different feeling of use on the first surface layer sheet 2 side and the second surface layer sheet 4 side can be obtained. For example, as shown in FIG. 8 (d), the adhesive pattern on the first surface sheet 2 side is a continuous triangular shape, and the adhesive pattern on the second surface layer 4 side is a hexagon having a larger area than the triangular shape. When the shapes are made continuous, the first fluid cell 200A has a smaller cell volume than the second fluid cell 400A, so there is a tension on the first surface sheet 2 side, and it feels somewhat stiff. It is done. Thus, the feeling of use can be easily adjusted with the adhesive pattern. Moreover, by setting it as a different pattern structure by the 1st surface layer sheet 2 side and the 2nd surface layer sheet | seat 4 side, it can also select and use both surfaces according to liking (reversible use).

  As shown in FIGS. 2 and 3, the adhesive pattern according to the present embodiment is such that the adhesive portion 20 on the first surface layer sheet 2 side and the adhesive portion 40 on the second surface layer sheet 4 side are flat. Arranged so as to cross each other. In FIG. 3, the adhesive portion 20 on the first surface layer sheet 2 side is indicated by a solid line, and the adhesive portion 40 on the second surface layer sheet 4 side is indicated by a broken line, but these adhesive portions 20 and 40 intersect in plan view. (When the fluid-filled rug is installed for normal use, it is arranged so as to intersect when viewed from above). By disposing the adhesive portion in this way, the load of the user's body is stably received and supported, so that it is difficult to bottom out and a fluid-filled rug with a sense of stability is obtained. In addition, since the portion where the adhesive portion 20 on the first surface layer sheet 2 side and the adhesive portion 40 on the second surface layer sheet 4 side overlap in plan view can be only the intersection, the user should Even if it contacts the intersection part, the adhesive parts 20 and 40 are arranged so as to overlap each other in plan view, and the area that is hard and has a low body pressure dispersion effect can be minimized. A filled rug is obtained. Furthermore, in the case of using as a fluid-filled rug for nursing care with a smaller fluid filling rate and a larger area in contact with the user (pressure-receiving area), it also has an effect of preventing the occurrence of pressure ulcers. As an example, the adhesive portions 20 and 40 of each adhesive pattern shown in FIGS. 6, 7 </ b> B to 7 </ b> E and FIGS. 8 to 9 are also arranged so as to intersect in plan view, and various adhesive patterns can be selected. Can be done. Depending on the adhesive pattern, there are adhesive portions 20 and 40 that do not intersect the other adhesive portion as shown in FIGS. 7B, 8E to 8F, and FIGS. 9C to 9E. May be.

  Moreover, in this embodiment shown in FIG. 3, the crossing angle α in a plan view between the adhesive portion 20 on the first surface layer sheet 2 side and the adhesive portion 40 on the second surface layer sheet 4 side is approximately 80 degrees. However, the crossing angle α is preferably 90 ° ± 30 °, and more preferably 90 ° ± 20 °, from the viewpoint of making it difficult for the adhesive portions that intersect in plan view to be close to each other. By setting it as this range, the stable support effect with respect to a load is easy to be exhibited, and the bottom of a rug can be prevented more. Note that the intersection angle α when the bonding portion is a curve is an angle at which the tangents of the bonding portions passing through the intersection intersect. Further, in the present embodiment, the adhesive portion 20 on the first surface sheet 2 side is disposed such that an acute angle 20θ with respect to the length direction L of the rug is inclined at approximately 50 degrees. 20θ is preferably 45 ° ± 25 °, more preferably 45 ° ± 10 °, and further preferably arranged so as to be inclined at 45 ° ± 5 °. As a result, the protruding part of the user's body lying in the direction of the length direction L of the rug becomes difficult to enter the linear adhesive part 20, and it becomes difficult to contact the adhesive part 20 or 40 having poor body pressure dispersibility. , You can get a more comfortable feeling. When the bonded portion is a curve, the inclination angle of the tangent at the midpoint of the length of the bonded portion is used.

  As shown in FIG. 3, a fluid cell 200A is formed in a region surrounded by the adjacent bonding portion 20, but by adjusting the acute angle 20θ with respect to the length direction L of the rug of the bonding portion 20, By changing the ratio of the length in the length direction L to the width direction W of the fluid cell 200A, a fluid-filled rug having flexibility in a certain direction can be obtained. For example, in the arrangement pattern of the adhesive portions 20 according to the present embodiment shown in FIG. 3, the shape of the fluid cell 200A is the maximum length in the width direction W of the fluid-filled rug by increasing the inclination angle 20θ to be greater than 45 degrees. The maximum length 200L in the length direction L of the fluid-filled rug is shorter than 200 W. With this configuration, the fluid-filled rug 1 can be easily bent in the length direction L. Therefore, when the fluid-filled rug 1 is lifted up using a bed with a back-up function, the rug can be easily Therefore, it is possible to suitably follow the back-up angle. Moreover, by making the inclination angle 20θ smaller than 45 degrees, the shape of the fluid cell 200A is 200 L in the length direction L of the fluid-filled rug rather than 200 L in the width direction W of the fluid-filled rug. Is configured to be longer. As a result, a fluid-filled rug that is difficult to bend in the length direction L and is easy to bend in the width direction W is obtained. In addition, by making the length of the communication portion 200B different between the length direction L and the width direction W of the fluid-filled rug, the shape of the fluid cell 200A is set to the maximum length 200W of the fluid cell 200A in the width direction W, The ratio of the fluid cell 200A in the length direction L to the maximum length 200L can also be changed.

  Moreover, as shown in FIG. 9, selecting an adhesive pattern having a plurality of polygonal shapes with different number of corners or polygonal shapes with different side lengths as the adhesive pattern on at least one surface layer sheet 2 or 4 side. Is also possible. Thereby, according to use conditions, such as a user's body part shape and load distribution for every part of a user, since it can be made into a suitable cell shape, body pressure dispersion performance and usability can be improved. it can.

  Furthermore, as shown in this embodiment and FIGS. 6 to 9, the number of corners of the polygonal shape in the adhesive pattern is preferably 3 to 8, and more preferably 3 to 6. The polygonal shape in the bonding pattern constitutes the shape of the fluid cell in each fluid chamber. The shape of the fluid cell should be such that the user's body is supported by as many fluid cells as possible and body pressure dispersion is suitable. Is preferred. Specifically, a triangle to an octagon are preferable, and a triangle to a hexagon that facilitates designing various fluid cell groups in combination with a single shape or other shapes are more preferable.

  As for the shape of the fluid cell, the adhesive pattern on the first surface sheet 2 side is more preferably a quadrangular shape. At this time, all of the first fluid cells 200A and all of the second communication portions 400B are obtained by selecting and combining any of the quadrangular to hexagonal adhesive patterns on the second surface layer sheet 4 side. Since it can be set as the structure arrange | positioned in the position which opposes and all the 2nd fluid cells 400A and all the 1st communication parts 200B oppose, a communication part is hard to bend and it is hard to block | close. . Therefore, in use, fluid movement between fluid cells is not hindered, contact pressure is not increased, and body pressure dispersion is not unstable, and body pressure dispersibility and feeling of use are more stable. It can be a fluid-filled rug. Further, in the case of a combination in which the adhesive pattern on the second surface layer sheet 4 side is also a quadrangular shape, all the adhesive portions 20 constituting the first fluid cell 200A are all the parts constituting the second fluid cell 400A. Since the adhesive portion 40 intersects in plan view, the load on the user's body can be stably received and supported. When the adhesive pattern on the first surface layer sheet 2 side and the adhesive pattern on the second surface layer sheet 4 side are both quadrangular, as a more preferable form, the adhesive pattern on the first surface layer sheet 2 side is a parallelogram. (Including rhombus, square and rectangle). As a result, when the fluid is filled, the fluid cell 200A has a shape that swells substantially symmetrically about the diagonal line of the parallelogram, so that the user can be supported more stably. And as a particularly preferable form, there is a combination in which the adhesive pattern on the first surface layer sheet 2 side and the adhesive pattern on the second surface layer sheet 4 side are the same parallelogram. As a result, as shown in FIG. 4, all the second communication parts 400 </ b> B are arranged to face each other at the portion where the cell height 200 </ b> H of all the first fluid cells 200 </ b> A is the highest, and all the second fluids Since all the first communication parts 200B are arranged to face each other at the portion where the cell height 400H of the cell 400A is the highest, the communication parts 200B or 400B face each other when receiving a load from the user. The action supported by the fluid cell 400A or 200A is most effectively exerted, and blockage due to bending or the like of the communication part 200B or 400B can be made less likely to occur. In addition, the midpoints in the length direction of all the bonding portions 20 on the first surface layer sheet 2 side and the midpoints in the length direction of all the bonding portions 40 on the second surface layer sheet 4 side are intersections. And since all the adhesion parts 20 and all the adhesion parts 40 cross | intersect planar view, the load of a user's body can be received and supported more stably. Therefore, it is possible to obtain a particularly suitable fluid-filled rug that is difficult to bottom out and exhibits the effects of improving body pressure dispersion performance and feeling of use to the maximum extent. In addition, in the structure of the air covering of patent document 1, when the number of corners of the polygonal shape in the adhesion pattern is 4 and the polygonal shape is a quadrangular shape (lattice shape), the communicating portion is associated with the expansion of the fluid cell. However, in the configuration of the present embodiment, when the fluid cell expands, it expands due to the expansion action of the intermediate sheet that configures the fluid cell. The contraction and the bending of the communicating part facing the fluid cell or the adjacent communicating part are suppressed. Therefore, the communication portion is hardly blocked, and stable movement of the fluid in the fluid chamber can be realized even when the number of corners of the polygonal shape is four.

  As an example of a preferable shape of the end portion of the bonding portion 20, as shown in FIGS. 2 and 3, the end portion 21 of the bonding portion 20 on the first surface layer sheet 2 side according to the present embodiment has an arc shape. Therefore, the stress applied to the end portion 21 of the bonding portion 20 is preferably dispersed, and damage to the boundary portion between the end portion 21 of the bonding portion 20 and the first surface layer sheet 2 can be prevented. Moreover, in this embodiment, the adhesion part 20 is formed in the cotton swab shape from which the edge part 21 side becomes a thick axis gradually, and the edge part 21 is designed so that it can respond also to big stress. The length 20a of the linear bonding part 20 is not particularly limited, and can be set as appropriate according to the arrangement pattern and application of the bonding part. For example, the length 20a of all the linear adhesive portions 20 and the length 40a of the linear adhesive portions 40 may be the same length, or FIGS. 8 (d) to 8 (f) and FIG. 9 (b). ), The lengths of the adhesive portion 20 on the first surface layer sheet 2 side and the adhesive portion 40 on the second surface layer sheet 4 side are different, or FIGS. 6 (a), 6 (d) and 6 (e). As described above, the lengths of the bonding portions may be different within the same plane. Further, with respect to the line width 20b of the bonded portion, from the viewpoint of securely bonding the first surface layer sheet 2 and the first intermediate sheet 3a without causing a portion having a small body pressure dispersion effect at the time of use. It is preferably 10 mm, more preferably 2 to 8 mm. As an example in the case of a mattress, the linear bonding portion 20 in the present embodiment is formed with an overall length 20a of 80 mm, a central portion having a line width 20b of 3 mm, and an end portion 21 having a maximum line width of 7 mm. .

  By forming the bonding portion 20 for bonding the first surface layer sheet 2 and the first intermediate sheet 3a as described above, the user can attach the rug 1 according to the present embodiment to the rug 1 according to the present embodiment, as shown in FIGS. When a load is applied such as lying down, the fluid cell 200A of the first fluid chamber 200 is crushed and deformed, and along the linear adhesive portion 20 forming the fluid cell 200A, Since the first surface layer sheet 2 in the vicinity of the peripheral edge rises, the linear adhesion portion 20 enters the inside and does not appear on the surface of the first surface layer sheet 2 or an adhesion portion that appears on the first surface layer sheet 2 The bonding width 20b of 20 is narrowed and narrowed. In addition, since the fluid cell 200A is formed by the linear adhesive portion 20, even when the fluid cell 200A in the fluid chamber 200 is crushed during use, the fluid cell 200A only deforms along the adhesive portion 20. And wrinkles such as non-uniform hard bending lines are unlikely to occur. Therefore, it is difficult for the protruding portion of the user's body to enter the adhesive portion 20 of the fluid-filled rug 1, and it is difficult to contact the adhesive portion 20 having poor body pressure dispersibility, so that a more comfortable feeling of use can be obtained. Furthermore, when used as a care rug, it is possible to prevent the occurrence of pressure sores.

  On the other hand, the linear adhesive part 40 applied to the second surface layer sheet 4 side is also formed in the present embodiment with the same configuration as the adhesive part 20 on the first surface layer sheet 2 side described above. . The other description regarding the structure of the adhesion part 40 of the 2nd surface layer sheet 4 is the same as that of the adhesion part 20 of the 1st surface layer sheet 2 mentioned above, and the effect is also the same.

  As shown in FIGS. 2 and 3, in the fluid-filled rug 1 according to this embodiment, the adhesive portion 20 on the first surface sheet 2 side and the adhesive portion 40 on the second surface layer sheet 4 side have the same swab shape. However, the bonding portion 20 and the bonding portion 40 may be formed of bonding portions having different shapes. Moreover, it is also possible to select a plurality of bonded portions such as different shapes as the bonded portion 20 on the first surface layer sheet 2 side or the bonded portion 40 on the second surface layer sheet 4 side. FIGS. 10A to 10G show examples of other shapes of the bonding portions 20 and 40. FIG. In the present embodiment, the shape of FIG. 10A is adopted as the adhesive portions 20 and 40. However, various shapes as shown in FIG. 10, the end portion is a polygonal shape, or only both corners of the end portion are used. A shape having a curvature can be selected. The linear adhesive portions 20 and 40 have a curved shape such as an arc shape, a wavy shape, an S shape, etc. in addition to a linear shape as shown in FIGS. 10A to 10E (see FIG. 9F). ), And other shapes such as zigzag lines (see FIG. 10G). Further, as the linear adhesive portions 20 and 40, even if they are the same shape, those having different overall lengths and sizes, or those having a plurality of different shapes such as a curved shape, a zigzag shape, a linear shape, etc. You may combine and arrange | position for every site | part of a rug.

  The flexible sheet constituting the fluid-filled rug 1 according to the present embodiment, that is, the first surface layer sheet 2, the first intermediate sheet 3a, the second intermediate sheet 3b, and the second surface layer sheet 4 are impermeable to fluid. It is formed of a non-breathable sheet. Although it does not specifically limit as a raw material of these flexible sheets, From a viewpoint which can perform the adhesion | attachment of the sheets by the linear adhesion parts 20 and 40 by welding, a thermoplastic synthetic resin film is preferable, a softness | flexibility and A urethane film is more preferable from the viewpoint of adhesiveness. Thereby, the adhesion | attachment of the sheets by the adhesion parts 20 and 40 can be easily performed by welding, such as high frequency welding, heat welding, laser welding, or ultrasonic welding. In addition, the adhesion includes adhesive bonding using an adhesive. In the fluid-filled rug 1 according to the present embodiment, a first surface layer sheet 2 and a first intermediate sheet 3a bonded together with a predetermined adhesion pattern, a second intermediate sheet 3b and a second surface layer sheet 4 are predetermined. It can be roughly manufactured by laminating those adhered with the adhesive pattern of and welding the sheet peripheral edge portion 6.

  In the fluid-filled rug 1 according to the present embodiment, as shown in FIG. 2, a plurality of through-holes 5 penetrating the first intermediate sheet 3 a and the second intermediate sheet 3 b constituting the intermediate sheet 3 are formed. The through-hole 5 is bonded to the first intermediate sheet 3a and the second intermediate sheet 3b by welding the peripheral edge of the hole. Therefore, the first fluid chamber 200 and the second fluid chamber 400 communicate with each other through the through hole 5, and the fluid is filled between the first intermediate sheet 3a and the second intermediate sheet 3b. It is configured not to be. Further, the position of the through hole is not limited to the position illustrated in FIG. For example, the through hole may be disposed in the fluid cell, and thus the fluid cell in which the through hole is disposed is filled with more fluid than the portion other than the fluid cell. Each of the surface layer sheet or the second surface layer sheet is unlikely to contact the through-hole and the through-hole is difficult to block, so that when fluid is filled, fluid can be smoothly filled between the fluid chambers communicated with each other through the through-hole. . Further, since the fluid can stably enter and exit the mutual fluid chamber at the time of use, a stable feeling of use can be obtained. In addition, in the range which does not impair the effect of this invention, it is also possible to comprise so that a fluid may be filled between the 1st intermediate sheet 3a and the 2nd intermediate sheet 3b.

  In the present embodiment, the first intermediate sheet 3a and the second intermediate sheet 3b constituting the intermediate sheet 3 have the same shape and size, but the shape and size of the two intermediate sheets are different. Also good. Specifically, as an example, the first intermediate sheet 3a has the same shape and size as the first surface layer sheet 2 and the second surface layer sheet 4, and the second intermediate sheet 3b has the waist part of the user. It may be arranged only in the region where it contacts, and may be adhesively laminated with the second surface layer sheet 4. In this case, only the first surface layer sheet 2, the first intermediate sheet 3a, and the second surface layer sheet 4 are integrally sealed with the outer peripheral portion, and the second surface layer sheet 4 is formed of the second intermediate sheet 3b. The portion that overlaps with the second intermediate sheet 3b and the bonding portion 40, and the other portion can be bonded with the first intermediate sheet 3b and the bonding portion 40. In this way, by appropriately selecting the shape, size, material, and the like of the sheet constituting the intermediate sheet 3, a fluid chamber partially having different hardness and function can be formed according to the purpose. Various functions can be added to the rug. Further, in the present embodiment, the intermediate sheet 3 is composed of two sheets of the first intermediate sheet 3a and the second intermediate sheet 3b, but may be composed of three or more sheets. When the intermediate sheet 3 is composed of a plurality of sheets, at least one of the intermediate sheets is integrally sealed with the first surface layer sheet 2 and the second surface layer sheet 4 so as to be sealed. What is necessary is just to use the same thing about the material of each intermediate sheet, and the thing of a different material may be selected. Furthermore, it is good also as a structure which varies thickness for every intermediate sheet, or makes shape differ.

  The fluid-filled rug 1 according to the present embodiment is used by being filled with a fluid through the fluid supply / discharge unit 8, and examples of the fluid include a gas such as air, a liquid such as water, and a gel. Thus, air is preferably used. The filling rate of the fluid is not particularly limited, but when used as a mattress used in a medical care facility or the like, it is preferably used in a low expansion state with a small amount of fluid filling. Specifically, the filling rate of the fluid filled in the fluid chambers 200 and 400 is preferably in the range of 40 to 90% (fluid temperature in the fluid chamber 25 ° C.) with respect to the maximum filling volume, and is preferably 60 to 85. % Is more preferable. By using the fluid-filled rug 1 in such a low expansion state, the user's body can be held at a low pressure, body pressure dispersion can be maintained in a suitable state, and the occurrence of pressure ulcers can be prevented. Further, even when used in a low expansion state, the above-described configuration makes it difficult for fluid to be blocked due to bending of the communication portions 200B and 400B, and ensures a stable fluid flow in the fluid chambers 200 and 400. It can be used as a fluid-filled rug 1 having a stable and low expansion. Here, the maximum filling volume refers to a volume in a state where the fluid filling rug is expanded to the maximum when the fluid temperature in the fluid chamber is 25 ° C. The filling volume of the fluid may be measured by a known method such as a water replacement method. Further, the fluid amount (volume) for setting the filling rate to be set is obtained by multiplying the maximum filling volume by the set filling rate. Further, the fluid supply / discharge unit 8 is configured by a hole penetrating the first surface layer sheet 2 or the second surface layer sheet 4 of the fluid-filled rug 1, and filling and sealing the fluid into the fluid-filled rug 1, The discharge operation is performed by appropriately connecting parts such as a stopper, a switching valve, and a pipe to the fluid supply / discharge unit 8. FIG. 1 illustrates a state in which L-shaped tubes are connected as the fluid supply / discharge portion 8 of the present embodiment. In addition, the fluid supply / discharge unit 8 may be used for both supply and discharge of the fluid, or the supply unit and the discharge unit may be provided separately.

  The fluid-filled rug of the present invention can be used as it is with the fluid filled and sealed, or can be used by controlling the supply and exhaust of fluid through the fluid supply / discharge unit 8 by a known method. . Further, as in a second embodiment to be described later, the fluid chambers 200 and 400 may be divided into a plurality of fluid filling chambers, and each fluid filling chamber may be individually supplied and exhausted. A control such as a so-called pressure switching type air mattress may be applied.

  Next, the operation of the fluid-filled rug according to the present embodiment will be described with reference to FIGS. FIG. 3 shows a partially enlarged view of the fluid-filled rug 1 according to the present embodiment, and FIG. 4 shows a cross-sectional view taken along the line AA, a cross-sectional view taken along the line BB and a cross-sectional view taken along the line CC in FIG. Is shown. As shown in FIG. 4, the fluid-filled rug 1 according to the present embodiment has a first fluid chamber 200 on the first surface sheet 2 side and a second fluid chamber 400 on the second surface sheet 4 side. The fluid chamber 200 includes a fluid cell 200 </ b> A and a communication portion 200 </ b> B formed by the plurality of bonding portions 20. Thereby, when the user lies on the first surface layer sheet 2, the load is applied to the first fluid chamber 200 via the first surface layer sheet 2, and the part in contact with the user's body The fluid movement from the fluid cell 200A to the surrounding fluid cell 200A is preferably restricted by the communication part 200B, and a certain amount of fluid is retained in the fluid cell 200A in the part where the user's body is in contact. Acts to support the body. At this time, as shown in FIG. 5, when the fluid cell 200A is deformed under the load of the user, the fluid cell on the second surface sheet 4 side facing the communicating portion 200B directly connected to the deformed fluid cell 200A. Since 400A supports the communication part 200B from the bottom to the upper side and supports the communication part 200B so that it does not bend, the shape of the communication part 200B is maintained, and blockage of the communication part 200B can be prevented. Therefore, even during use, the fluid movement of the fluid cell 200A is not hindered, and the fluid-filled rug 1 having a stable feeling of use can be obtained. Similarly, the second fluid chamber 400 on the second surface layer sheet 4 side includes a fluid cell 400A formed by a plurality of adhesive portions 40 and a communication portion 400B. As a result, when a user lies on the first surface layer sheet 2, a load is applied to the second fluid chamber 400 via the first fluid chamber 200, and the load is applied to the fluid cell 400 </ b> A. The movement of the fluid to the surrounding fluid cell 400A is preferably regulated by the communication portion 400B, and a fixed amount of fluid is retained in the fluid cell 400A where the user's load is applied to support the user's body. Works. At this time, as shown in FIG. 5, when the fluid cell 400A is deformed under the load of the user, the first fluid cell 200A facing the communication part 400B directly connected to the deformed fluid cell 400A is connected to the communication part 400B. Since the communication part 400B is pressed so as not to be bent, the shape of the communication part 400B is maintained and blockage can be prevented. Therefore, even when in use, the fluid movement of the fluid cell 400A is not hindered, and the fluid-filled rug 1 having a stable feeling of use can be obtained.

  Further, as shown in FIGS. 5B and 5C, when a load is applied to the first surface layer sheet 2, the fluid cell 200A in the first fluid chamber 200 is crushed and deformed. At this time, the first surface layer sheet 2 in the vicinity of the peripheral edge of the adhesion portion 20 rises along the linear adhesion portion 20 forming the fluid cell 200A, and the adhesion portion 20 enters the inside and enters the first surface layer sheet 2. The adhesion width 20b of the adhesion part 20 that does not appear on the surface or appears on the first surface layer sheet 2 is narrowed narrowly. Similarly, when the fluid cell 400A of the second fluid chamber 400 is also crushed, the second surface sheet 4 in the vicinity of the peripheral edge of the adhesive portion 40 rises, so that the linear adhesive portion 40 enters the second portion. It does not appear on the surface of the surface layer sheet 4 or the bonding width 40b of the bonding portion 40 is narrowed. Therefore, even if the adhesive portion 20 on the first surface layer sheet 2 side and the adhesive portion 40 on the second surface layer sheet 4 side are arranged at the same position, a portion having a small body pressure dispersion effect Since it acts so as not to contact the user, a more comfortable feeling of use can be obtained, and furthermore, the occurrence of pressure ulcer can be prevented in medical and nursing care applications.

  Moreover, in the fluid-filled rug 1 according to the present embodiment, a wrapping cloth 7 may be attached to an end portion in the length direction L of the rug 1 as shown in FIG. When the fluid-filled rug 1 is placed on a bed (bed) or other mattress material, the wrapping cloth 7 is used for the bottom plate of the bed (part corresponding to “bottom” in each part name of JIS T9205) or other By wrapping around the back side of the mattress material, it is possible to prevent the fluid-filled rug 1 from moving out of position where the fluid-filled rug 1 is placed when raising the back. In FIG. 1, the wrapping cloth 7 is attached to both ends in the length direction of the fluid-filled rug 1, but it may be provided only on the user's head side during use. . In addition, the means for preventing the fluid-filled rug 1 from shifting from the position placed on the bed (bed) or other mattress material is not limited to the attachment of the entrainment cloth 7, but for example, the fluid-filled rug 1 A fastener such as a strap or a band for fixing to a couch or the like may be attached to the peripheral edge, and when the fluid-filled rug 1 and the couch or the like are tied and fixed with a strap, a hole for passing the strap is provided. You may attach to the fluid filling rug 1.

  Further, the fluid-filled rug 1 according to the present embodiment is not particularly limited, and is applied to, for example, a mattress for bedding, a cushion, a pillow, an insole for shoes, and the like. Moreover, these are applied not only for general use but also as mattresses, cushions and pillows for bedding for medical care. In this case, in order to enhance the effect of preventing pressure ulcers, it is preferable that the amount of fluid filled in the rug is adjusted to be used in a low expansion state.

  Next, a fluid-filled rug 11 according to a second embodiment of the present invention will be described with reference to FIGS.

  As shown in FIG. 11, in the fluid-filled rug 11 according to the second embodiment, the peripheral edge portion 16 of the stacked sheets is sealed so that the fluid filled in the fluid-filled rug does not escape from the peripheral edge portion 16. It has a simple structure. Further, in the fluid-filled rug 11 of the present embodiment, a sealing portion formed by integrally sealing a sheet in the width direction of the rug at the bent position in order to correspond to the bending of a bed with a back-up function or the like. 19 is provided in two places. As shown in FIG. 12, the fluid-filled rug according to the second embodiment includes three flexible sheets, a first surface layer sheet 12, an intermediate sheet 13, and a second surface layer sheet 14, in this order. It is configured by stacking. As shown in FIG. 14, the fluid-filled rug 11 is filled with fluid between the first surface layer sheet 12 and the intermediate sheet 13 to form a first fluid chamber 1200, and the second surface layer sheet 14 and A fluid is also filled between the intermediate sheet 13 and a second fluid chamber 1400 is formed. Thus, the fluid-filled rug 11 of the present invention includes two layers of fluid chambers, the first fluid chamber 1200 and the second fluid chamber 1400.

  As shown in FIGS. 11-14, the 1st surface sheet 12 and the intermediate sheet 13 are adhere | attached by the adhesive pattern which has the polygonal shape connected mutually. The bonding pattern has a linear bonding portion 120 at a portion corresponding to the side of the polygonal shape, and has an unbonded portion 1200C at a portion corresponding to the vertex of the polygonal shape. As a result, when the fluid is filled between the first surface layer sheet 12 and the intermediate sheet 13 to form the first fluid chamber 1200, the fluid chamber 1200 is partially covered by the four adhesive portions 120 adjacent to each other. A substantially rhombus-shaped first fluid cell 1200A surrounded and a first communication portion 1200B that fluidly communicates adjacent fluid cells with each other are formed (see FIG. 14).

  Similarly, the 2nd surface layer sheet 14 and the intermediate | middle sheet | seat 13 are adhere | attached by the adhesive pattern which has the polygonal shape connected mutually. The bonding pattern has a linear bonding portion 140 at a portion corresponding to the side of the polygonal shape, and has an unbonded portion 1400C at a portion corresponding to the vertex of the polygonal shape. As a result, when the fluid is filled between the second surface layer sheet 14 and the intermediate sheet 13 to form the second fluid chamber 1400, the fluid chamber 1400 is partially separated by the four bonding portions 140 adjacent to each other. A substantially rhombic second fluid cell 1400A that is enclosed and a second communication portion 1400B that fluidly communicates adjacent fluid cells with each other are formed (see FIG. 14).

  As shown in FIGS. 12 and 13, the first communication portion 1200B described above is disposed at a position facing the second fluid cell 1400A, and the second communication portion 1400B is also facing the first fluid cell 1200A. It is arranged at the position to do. In the present embodiment, the first fluid cell 1200A is disposed at a position facing the second communication portion 1400B, and the second fluid cell 1400A is also disposed at a position facing the first communication portion 1200B. Has been. By arranging the adhesive pattern in this way, even when the fluid cell 1200A or 1400A of one fluid chamber 1200 or 1400 is deformed under the load of the user, it is directly connected to the deformed fluid cell 1200A or 1400A. Since the communication part 1200B or 1400B is supported by the fluid cell 1400A or 1200A of the other fluid chamber 1400 or 1200 that faces the communication part 1200B or 1400B, the shape is maintained and the communication part 1200B or 1400B is difficult to block. Further, when the fluid cell 1200A or 1400A expands, contraction or bending of the opposing communication portion 1400B or the adjacent communication portion 1200B is suppressed by the expansion action of each intermediate sheet constituting the fluid cell 1200A or 1400A. Even when the cell 1200A or 1400A is in a highly expanded state, the communication portion is hardly blocked. Therefore, since the fluid movement between the fluid cells is not hindered, the fluid-filled rug 11 having a stable feeling of use can be obtained without increasing the contact pressure of the fluid chamber or unstable body pressure dispersion. can get. In addition, in the range which does not impair the effect of this invention as the fluid filling rug 11, all the communication parts 1200B or 1400B do not need to be arrange | positioned in the position facing the fluid cell 1400A or 1200A, and one fluid cell For 1200A or 1400A, it is only necessary that at least one communication portion 1200B or 1400B directly connected to the fluid cell faces the other fluid cell 1400A or 1200A. Similarly, the fluid cell 1200A or 1400A does not necessarily have to be disposed at a position facing the communication portion 1400B or 1200B, and the fluid cell 1200A or 1400A is provided for the other fluid cell 1400A or 1200A. What is necessary is just to be arrange | positioned in the position facing at least 1 communicating part 1400B or 1200B directly connected with the fluid cell.

  Further, the position where the first communication portion 1200B faces the second fluid cell 1400A is the height of the second fluid cell 1400A when the second fluid cell 1400A is filled with the fluid and expanded. It is preferable that 1st communicating part 1200B is arrange | positioned so that 1400H (refer FIG. 14) may become the highest part. On the other hand, with respect to the position where the second communication portion 1400B faces the first fluid cell 1200A, the cell height of the first fluid cell 1200A when the first fluid cell 1200A is filled with the fluid and swells. It is preferable that the second communication portion 1400B is disposed so as to face the portion where 1200H (see FIG. 14) is the highest. Thereby, when receiving the load of the user, the action supported by the fluid cell 1400A or 1200A facing the communication portion 1200B or 1400B is more effectively exhibited, so that the communication portion 1200B or 1400B is bent. As a result, a fluid-filled rug that is less likely to be blocked by, for example, is obtained.

  As shown in FIG. 11, the rug 11 according to the present embodiment has a first surface layer at a position corresponding to the bent portion of the bed with a back-raising function in order to easily follow the bed with the back-raising function. Two sealing portions 19 formed by integrally sealing the sheet 12, the intermediate sheet 13, and the second surface layer sheet 14 in the width direction W are provided. Therefore, the fluid filling rug 11 is divided into three in the length direction L, and is composed of three independent fluid filling chambers without communication. Each fluid filling chamber includes a first fluid chamber 1200 and a second fluid chamber 1400, respectively. In each of the three fluid filling chambers, two fluid supply / discharge portions 18 are provided as an example, and the fluid amount is adjusted so that the fluid filling rug 11 maintains a predetermined rug height and fluid pressure. It is configured to be performed via the fluid supply / discharge unit 18. In addition, as shown in FIG. 14, the fluid-filled rug 11 according to the present embodiment has a plurality of through holes 15 penetrating the intermediate sheet 3, and includes a first fluid chamber 1200 and a second fluid chamber 1400. Is communicated through the through hole 15. In the present embodiment, the number of fluid filling chambers by the sealing portion 19 is three, but may be two or four or more depending on the purpose.

  The flexible sheets constituting the fluid-filled rug 11 according to this embodiment, that is, the first surface layer sheet 12, the intermediate sheet 13, and the second surface layer sheet 14 are formed of a non-breathable sheet that does not allow fluid to pass through. Yes. In the fluid-filled rug 11 according to this embodiment, the first surface layer sheet 12 and the intermediate sheet 13 are overlapped and bonded by a plurality of bonding portions 120, and then the intermediate sheet 13 and the second surface layer sheet are adjusted while adjusting the bonding pattern. 14 are bonded together by a plurality of bonding portions 140, and then these sheets are integrally welded in the width direction W of the rug to form a sealing portion 19 that is sealed, and the peripheral edges of the sheets are welded to roughly manufacture. Can be done.

  In addition, the other description regarding the structure of the fluid filling rug 11 is the same as that of the case of 1st Embodiment mentioned above, and the effect is also the same.

  Hereinafter, the present invention will be described in detail with reference to examples.

[Example 1]
A fluid-filled rug was prepared by the following procedure, and the effect when used as a mattress was evaluated. The configuration of the fluid-filled rug is the same as that of the first embodiment shown in FIG. 2, and four urethane films are used as the first surface layer sheet 2, the first intermediate sheet 3a, the second intermediate sheet 3b, and the second surface layer sheet 4. A sheet (hardness: JIS A hardness 85, thickness: 0.25 mm, Nippon Unipolymer Co., Ltd., UniGrand XN2001) was used. First, the first surface layer sheet 2 and the first intermediate sheet 3a were bonded to each other by welding an adhesive pattern in which parallelograms (diamonds) shown in FIG. In this adhesion pattern, the communication part 200B formed in the unbonded part region is configured to be a square of 25 mm long × 25 mm wide. Note that the adhesive pattern shown in FIG. 15B is arranged such that the inclination angle θ of the adhesive portion 20, that is, the acute angle θ with respect to the length direction L of the rug of the adhesive portion 20 is 45 degrees. Further, the linear bonding portion 20 constituting the bonding pattern has the swab shape and dimensions shown in FIG. 15A, specifically, the entire length is 80 mm, the end length is 21 mm, and the central portion. Was 38 mm, the central portion had a line width of 3 mm, the end portion had a maximum line width of 7 mm, and the end portion had a curvature radius of R 3.5 mm. Similarly, the second surface layer sheet 2 and the second intermediate sheet 3b are bonded to each other by spreading a bonding pattern in which parallelograms (diamonds) shown in FIG. did. Next, as shown in FIG. 15B, the first fluid cell 200A and the second communication portion 400B formed by the above-mentioned adhesion face each other, and the second fluid cell 400A and the first communication portion 200B are opposed to each other. The above-mentioned bonded sheets were overlapped so as to face each other. At this time, the overlapping angle was adjusted so that the crossing angle α in a plan view between the adhesive portion 20 on the first surface layer sheet 2 side and the adhesive portion 40 on the second surface layer sheet 4 side was 90 degrees. Next, a hole is formed in each of the opposing positions of the first intermediate sheet 3a and the second intermediate sheet 3b, and the hole peripheral edge of the first intermediate sheet 3a and the hole peripheral edge of the second intermediate sheet 3b are welded to form a through hole. The fluid chamber 200 on the first surface layer sheet 2 side and the fluid chamber 400 on the second surface layer sheet 4 side communicate with each other. Thereafter, the peripheral portions of the four sheets were welded and sealed to obtain a mattress having a length of 2070 mm and a width of 930 mm.

  As a comparative example, the bonding part 20 and the bonding part 40 are flat when the first surface sheet 2 side sheet and the second surface layer sheet 4 side of the above-described production procedure are overlapped. The first fluid cell 200A and the second fluid cell 400A face each other without intersecting with each other, and the first communication part 200B and the second communication part 400B are overlapped so as to face each other. The mattress of the comparative example was obtained in the same manner as the production procedure.

  Each mattress was filled with air, and each mattress (with no cover) had one subject (6 people in total) with BMI (Body Mass Index) 18, 20, 22, 24, 26 and 28 in a supine position. Then, the presence or absence of the bottom of the mattress and the sleeping comfort (support stability) were subjected to sensory evaluation. In the evaluation, it was assumed that the sleeping comfort was excellent when the fluid cell support was not felt unstable. In addition, the mattress on which the subject lay down was visually observed to examine the state of the fluid cell and the communication portion. The air filling rate of each mattress is a low filling rate (low expansion state) with a filling rate of 80% (inner pressure 0.5 kPa; gauge pressure) with the maximum filling volume when the inner pressure is 3.0 kPa (gauge pressure). The two filling conditions (high expansion state) with a filling rate of 90% (internal pressure 1.5 kPa; gauge pressure) were evaluated.

  As a result, the mattress according to the present example was evaluated as having no bottoming and excellent sleeping comfort in both the low filling rate and the high filling rate. In addition, by adopting the configuration of the present invention from the state of the mattress at the time of the test, the air flow caused by the contraction of the communication part due to the bending of the communication part or the expansion of the fluid cell over the range of the practical filling rate It was found that occlusion was difficult to occur. As a result, each fluid cell stably supports the body, so that it has excellent sleeping comfort, does not have a bottom, and does not feel the hardness that the bonded part hits the body, especially when the filling rate is low. It was found that the pressure dispersibility was also excellent.

  On the other hand, about the mattress of the comparative example, evaluation that there was a bottom in the state of a low filling rate was obtained from 70% or more of subjects. Moreover, evaluation that it was uncomfortable compared with the mattress of this invention of Example 1 in the state of both the low filling rate and the high filling rate from all subjects was obtained. Further, from the state of the mattress at the time of the test, it does not have the configuration of the present invention, the fluid cells on the first surface sheet side and the second surface layer side overlap in plan view, and the first surface layer side The mattress of the comparative example having a structure in which the communicating portions on the second surface layer sheet side overlap each other in a plan view is easy to cause bottoming when a load is concentrated on the communicating portion in a low filling rate, and is bonded. It was found that the communication part was easily blocked even when it was bent and deformed along the length direction of the part. And in the state of a high filling rate, it is observed that the edge part of an adhesion part approaches and a communication part is crushed and obstruct | occluded with a raise of a filling rate, between the fluid cells adjacent to the closed communication part. It was found that the support of the body by each fluid cell became unstable because the flow of air was disturbed. Moreover, since it arrange | positioned so that an adhesion part may overlap by planar view, the hardness by an adhesion part hitting a body was felt, and it turned out that it is inferior to body pressure dispersibility.

[Example 2]
A fluid-filled rug was prepared in the same procedure as in Example 1, and the effect when used as a mattress was evaluated. Among the above-described production procedures, the inclination angle θ of the bonding portion in the bonding pattern (the acute angle θ with respect to the length direction L of the bonding portion of the bonding portion), the bonding portion 20 on the first surface sheet 2 side, and the second surface layer Mattresses were produced in which only the crossing angle α in plan view with the adhesive portion 40 on the sheet 4 side was changed to the values shown in Table 1 below.

  Each prepared mattress was filled with air so that the filling rate would be 80%, and each of the mattresses (without a cover) had a BMI (Body Mass Index) of 18, 20, 22, 24, 26, and 28 subjects each ( All 18 persons) were laid in a supine position, and the support feeling of the mattress was subjected to sensory evaluation. The evaluation is determined based on the evaluation of a mattress having a crossing angle α of 90 degrees and an inclination angle θ of 45 degrees as a reference. The case of 14 people was ranked as B, 6-9 as C rank, and 5 or less as D rank. The results are shown in Table 2.

  From this result, it was found that the crossing angle α between the bonded portion 20 and the bonded portion 40 is preferably 60 to 120 degrees, and more preferably 70 to 110 degrees. Moreover, as the inclination | tilt angle (theta) of the adhesion part, it turned out that 30-60 degrees is preferable and 35-55 degrees is more preferable.

  The present invention is not limited to the above-described embodiments or examples, and various design changes within the scope not departing from the gist of the invention described in the claims are also included in the technical scope. Is.

DESCRIPTION OF SYMBOLS 1,11 Fluid filling rug 2,12 1st surface sheet 20,120 Adhesive part 20a, 120a 1st surface layer side Adhesive part length 20b, 120b Narrowest width | variety of adhesive part 20 (theta) Adhesive part 20 rug Angle of acute angle with respect to the length direction L 21, 121 End portion 200, 1200 First fluid chamber 200A, 1200A First fluid cell 200B, 1200B First communication portion 200C, 1200C First unbonded portion 200L Maximum length of fluid cell 200A in the length direction 200W Maximum length of fluid cell 200A in the width direction 200H, 1200H Cell height of fluid cell 3,13 Intermediate sheet 3a First intermediate sheet 3b Second intermediate sheet 4,14 First Second surface layer sheet 40, 140 Adhesive part 40a, 140a on the second surface layer sheet side Adhesive part length 40b, 140b Narrowest width 41, 141 Edge 400, 1400 Second fluid chamber 400A, 1400A Second fluid cell 400B, 1400B Second communication portion 400C, 1400C Second unbonded portion 400H, 1400H Cell height of fluid cell 5, 15 Through hole 6, 16 Peripheral part 7, 17 Entrainment cloth 8, 18 Fluid supply / discharge part 19 Sealing part L Length direction of fluid filling rug W Width direction of fluid filling rug B User Body α The crossing angle of the bonding portion 20 and the bonding portion 40 in plan view

Claims (15)

The first surface layer sheet, the at least one intermediate sheet, and the second surface layer sheet are laminated in this order and the outer periphery is sealed, and each of the first and second surface layer sheets and the at least A fluid-filled rug used by being filled with fluid between one intermediate sheet,
It said first and said with each of the second surface sheet and at least one intermediate sheet is adhered by contact adhesive pattern in which a plurality of polygonal shape in the width direction and length direction of the rug are connected to each other ,
The adhesive pattern has a non-bonded portion in the portion corresponding to each vertex of the polygonal shape, a portion corresponding to each side of the polygonal shape Ri linear bonding portion Tona,
All the linear adhesive portions in the adhesive pattern that adheres the first surface layer sheet and the at least one intermediate sheet are the adhesive pattern that adheres the second surface layer sheet and the at least one intermediate sheet. It is arranged at a position where it intersects with all the linear adhesive parts in plan view,
By adhering the adhesive pattern, fluid cells are formed in the portions surrounded by the linear adhesive portions, and communication portions are formed in the non-adhered portions so that adjacent fluid cells are in fluid communication with each other. ,
The communication portion formed between the first surface layer sheet and the at least one intermediate sheet is disposed at a position facing a fluid cell formed between the second surface layer sheet and the at least one intermediate sheet. And
The fluid cell formed between the first surface layer sheet and the at least one intermediate sheet is disposed at a position facing the communication portion formed between the second surface layer sheet and the at least one intermediate sheet. And
The communication portion formed between the second surface layer sheet and the at least one intermediate sheet is disposed at a position facing a fluid cell formed between the first surface layer sheet and the at least one intermediate sheet. and,
The fluid cell formed between the second surface layer sheet and the at least one intermediate sheet is disposed at a position facing the communication portion formed between the first surface layer sheet and the at least one intermediate sheet. fluid-filled rug, characterized by that. 2. The fluid-filled rug according to claim 1, wherein the polygonal shape in the adhesive pattern includes a plurality of polygonal shapes having different numbers of angles or polygonal shapes having different lengths on one side. The adhesive patterns for adhering the first surface layer sheet and the at least one intermediate sheet are different from the adhesive patterns for adhering the second surface layer sheet and the at least one intermediate sheet. Item 3. A fluid-filled rug according to item 1 or 2 . The at least one intermediate sheet is provided with at least one through hole, the fluid filled between the first surface layer sheet and the at least one intermediate sheet, the second surface layer sheet, and the at least one The fluid-filled rug according to any one of claims 1 to 3 , wherein the fluid filled between the two intermediate sheets can flow through the at least one through hole. The fluid-filled rug according to claim 4 , wherein the at least one through hole is disposed in the fluid cell. The at least one intermediate sheet is configured by laminating a first intermediate sheet and a second intermediate sheet;
The said 1st surface layer sheet | seat is adhere | attached with the said 1st intermediate sheet, The said 2nd surface layer sheet | seat is adhere | attached with the said 2nd intermediate sheet, The any one of Claims 1-5 characterized by the above-mentioned. Fluid-filled rug. The fluid-filled rug according to any one of claims 1 to 6 , wherein the number of corners of the polygonal shape in the adhesive pattern is 3 to 8. The fluid-filled rug according to any one of claims 1 to 6 , wherein the polygonal shape in the adhesion pattern is a parallelogram. The communication portion is disposed at a position facing a portion where the cell height of the fluid cell is highest when the fluid cell facing the communication portion is filled with a fluid and expanded. The fluid-filled rug according to any one of claims 1 to 8 . The fluid-filled rug according to any one of claims 1 to 9 , wherein a thick shaft portion having a circular arc shape is formed at at least one end of the linear bonding portion in the bonding pattern. A line-shaped adhesive portion in the adhesive pattern that bonds the first surface layer sheet and the at least one intermediate sheet, and a line in the adhesive pattern that bonds the second surface layer sheet and the at least one intermediate sheet. The fluid-filled rug according to any one of claims 1 to 10 , wherein an intersecting angle in a plan view with the adhesive portion is 90 degrees ± 30 degrees. The linear adhesion part in the said adhesion pattern is arrange | positioned so that the acute angle with respect to the length direction of the said rug may be 30 to 60 degree | times, The any one of Claims 1-11 characterized by the above-mentioned. The fluid-filled rug described in 1. A rug using the fluid-filled rug according to any one of claims 1 to 12 . Cushion with fluid-filled rug according to any one of claims 1 to 12. Pillow with fluid-filled rug according to any one of claims 1 to 12.

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