Cell mattress, air bed, and method for manufacturing cell mattress

Abstract

To provide a cell mattress, an air bed, and a method for manufacturing a cell mattress that do not require large storage space, can be prepared for use with simple work, and can provide high-quality sleep. [Solution] Multiple rod-shaped cells are connected horizontally, with the rod-shaped cells at both ends being larger in diameter than the rod-shaped cells in between. These multiple rod-shaped cells are connected, and an air injection section equipped with a check valve is attached. As a result, it does not require a large storage space, can be made ready for use with simple work, and can provide high-quality sleep.

Description

Technical Field

[0001] The present invention relates to, for example, a cell mat, an air bed, and a method for manufacturing a cell mat used in a shelter during a disaster. In particular, it is devised so that it does not require a large storage space, can be used with simple operations, and can provide high-quality sleep.

Background Art

[0002] As conventional air beds, those described in Patent Document 1 and Patent Document 2 are known. First, the air mat according to the invention described in Patent Document 1 has the outer peripheral sides of two sheets welded, and a plurality of partition sheets are arranged inside with a space therebetween, and small air chambers are formed between the partition sheets.

[0003] Next, the air mat according to the invention described in Patent Document 2 houses an air blowing mat inside and uses it as bedding. The air blowing mat has a cross-sectional shape provided with a plurality of ridges, and is used in a state where air is supplied inside by an air pump and inflated. Also, air blowing holes are provided at the vertices of the plurality of ridges of the air blowing mat, and air is ejected from inside the air blowing mat. Thereby, the bag-shaped sheet spreads and the generation of wrinkles in the bag-shaped sheet is prevented.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] According to the above conventional configuration, there were the following problems. Note: The numbers in the patent document numbers are replaced with **** as the specific numbers are not provided in the original text. First, in the case of the air mattress according to the invention described in Patent Document 1, the air chambers that are extended horizontally are connected vertically, which resulted in a poor sleeping experience and the inability to obtain high-quality sleep. For example, the large number of air chambers meant that they all protruded onto the user's body, which sometimes caused discomfort. Furthermore, the height of the horizontally extended air chambers was constant in the horizontal direction, which meant that when a user turned over in their sleep, they could sometimes fall off the air mattress to either the left or the right. Furthermore, the air mattress described in Patent Document 2 also has a configuration in which horizontally extended peaks are connected vertically, which presents the same problems as the invention described in Patent Document 1.

[0006] The present invention is based on these points and aims to provide a cell mattress, an air bed, and a method for manufacturing a cell mattress that do not require a large storage space, can be made ready for use with simple work, and can provide high-quality sleep. [Means for solving the problem]

[0007] To solve the above problems, the cell mat according to claim 1 of the present invention is characterized in that a plurality of rod-shaped cells are arranged horizontally in series, the rod-shaped cells at both the left and right ends are larger in diameter than the rod-shaped cells in between, the plurality of rod-shaped cells are connected to each other, and an air injection member equipped with a check valve is attached. Furthermore, the cell mat according to claim 2 is characterized in that, in the cell mat according to claim 1, the plurality of rod-shaped cells are connected by welding both ends in the longitudinal direction of a film-made cylindrical body and intermittently welding along a plurality of welding lines provided at intervals in the transverse direction. Furthermore, the cell mat according to claim 3 is characterized in that, in the cell mat according to claim 1 or claim 2, there are multiple, odd-numbered, rod-shaped cells between the rod-shaped cells at both the left and right ends. Furthermore, the cell mat according to claim 4 is characterized in that, in the cell mat according to claim 1 or claim 2, there are multiple, and even number of, rod-shaped cells between the rod-shaped cells at both the left and right ends. Furthermore, the cell mat according to claim 5 is characterized in that, in the cell mat according to claim 1 or claim 2, the check valve normally blocks the flow path and deforms to open the flow path when air is supplied. Furthermore, the cell mat according to claim 6 is characterized by comprising the cell mat described in any of claims 1 to 5, and an outer bag in which the cell mat is contained. Furthermore, the air bed according to claim 7 is characterized in that, in the air bed described in claim 6, the air injection member penetrates the outer bag and is exposed to the outside. Furthermore, the air bed according to claim 8 is characterized in that, in the air bed described in claim 6, the outer bag is formed into a bag shape by sewing. Furthermore, the air bed according to claim 9 is characterized in that, in the air bed described in claim 8, the outer bag is made of flat yarn woven fabric that is not laminated and is sewn together. Furthermore, the air bed according to claim 10 is characterized in that, in the air bed described in claim 6, the outer bag is formed into a bag shape by heat welding. Furthermore, the air bed according to claim 11 is characterized in that, in the air bed described in claim 6, the end of the cell mat is fixed to the outer bag. Furthermore, the air bed according to claim 12 is characterized in that, in the air bed described in claim 6, the outer bag is provided with a gripping portion. Furthermore, the air bed according to claim 13 is characterized in that, in the air bed described in claim 12, a rope is installed on the gripping portion. Furthermore, the air bed according to claim 14 is characterized in that, in the air bed described in claim 13, it is used as a sofa by maintaining a folded state with the rope mentioned above. Furthermore, the method for manufacturing a cell mat according to claim 15 is characterized by welding both ends of a cylindrical film body in the longitudinal direction, and then intermittently welding along a plurality of welding lines provided at intervals in the transverse direction. [Effects of the Invention]

[0008] As described above, according to the Cell Mat of Claim 1 of the present invention, a plurality of rod-shaped cells are connected horizontally, the rod-shaped cells at both ends are larger in diameter than the rod-shaped cells in between, the plurality of rod-shaped cells are connected to each other, and an air injection member equipped with a check valve is attached, so it does not require a large storage space, can be made ready for use with simple work, and can provide high quality sleep. Furthermore, according to the Cell Mat of Claim 2, in the Cell Mat of Claim 1, the plurality of rod-shaped cells are connected by welding both ends in the longitudinal direction of a film tube and intermittently welding along a plurality of welding lines provided at intervals in the transverse direction. Therefore, it does not require a large storage space, can be made ready for use with simple work, and can provide high-quality sleep. Moreover, it is easy to manufacture. Furthermore, according to the Cell Mat of Claim 3, in the Cell Mat of Claim 1 or Claim 2, there are multiple, odd-numbered, rod-shaped cells between the rod-shaped cells at both the left and right ends, so it does not require a large storage space, can be made ready for use with simple work, and can provide high-quality sleep. Furthermore, according to the Cell Mat of Claim 4, in the Cell Mat of Claim 1 or Claim 2, there are multiple, even number of rod-shaped cells between the rod-shaped cells at both the left and right ends, so it does not require a large storage space, can be made ready for use with simple work, and can provide high-quality sleep. In addition, there is a concern that if the user lies in the center in the width direction, the rod-shaped cells in the center in the width direction may come into contact with the spine and cause discomfort, but since the center in the width direction is between the rod-shaped cells, such discomfort can be eliminated. Furthermore, according to the Cell Mat of Claim 5, in the Cell Mat of Claim 1 or Claim 2, the check valve normally blocks the flow path and deforms to open the flow path when air is supplied, so it does not require a large storage space, can be made usable with simple work, and can provide high quality sleep. Furthermore, since the Cell Mat according to claim 6 comprises the Cell Mat described in any of claims 1 to 5, and an outer bag in which the Cell Mat is housed, it does not require a large storage space, can be made ready for use with simple work, and can provide high-quality sleep. Furthermore, according to the air bed of claim 7, in the air bed of claim 6, the air injection member is exposed to the outside by penetrating the outer bag, so it does not require a large storage space, can be made ready for use with simple work, and can provide high-quality sleep. Furthermore, according to the air bed of claim 8, in the air bed described in claim 6, the outer bag is made into a bag shape by sewing, so it does not require a large storage space, can be made ready for use with simple work, and can provide high quality sleep. Furthermore, according to the air bed of claim 9, in the air bed of claim 8, the outer bag is made of unlaminated flat yarn woven fabric sewn together, so it does not require a large storage space, can be made ready for use with simple work, and can provide high-quality sleep. Furthermore, according to the air bed of claim 10, in the air bed of claim 6, the outer bag is formed into a bag shape by heat welding, so it does not require a large storage space, can be made ready for use with simple work, and can provide high quality sleep. Furthermore, according to the air bed of claim 11, in the air bed of claim 6, since the end of the cell mattress is fixed to the outer bag, it does not require a large storage space, can be made ready for use with simple work, and can provide high-quality sleep. Moreover, according to the air bed of claim 12, in the air bed described in claim 6, since a gripping portion is provided on the outer packaging bag, it does not require a large storage space and can be put into a usable state with simple operations, and can provide high-quality sleep. Moreover, according to the air bed of claim 13, in the air bed described in claim 12, since a rope is installed on the gripping portion, it does not require a large storage space and can be put into a usable state with simple operations, and can provide high-quality sleep. Moreover, according to the air bed of claim 14, in the air bed described in claim 13, since it is configured to be used as a sofa while holding the folded state by the rope, it does not require a large storage space and can be put into a usable state with simple operations, and can provide high-quality sleep. Also, it can be used as a sofa. Moreover, according to the manufacturing method of the cell mat of claim 15, since both longitudinal ends of the film-made cylindrical body are welded, and then welded intermittently along a plurality of welding ribs provided at intervals in the transverse direction, a desired cell mat can be easily manufactured.

Brief Description of the Drawings

[0009] [Figure 1] It is a view showing a first embodiment of the present invention. FIG. 1(a) is a perspective view of the air bed viewed from the air inlet side, and FIG. 1(b) is a perspective view of the air bed viewed from the side opposite to the air inlet. [Figure 2] It is a view showing a first embodiment of the present invention. It is a perspective view showing a state in which a part of the outer packaging bag is removed to expose the internal cell mat. [Figure 3] It is a view showing a first embodiment of the present invention. It is a plan view of the internal cell mat in a state where no air is injected. [Figure 4] It is a view showing a first embodiment of the present invention. FIG. 4(a) is a schematic cross-sectional view of the air bed in a non-loaded state, and FIG. 4(b) is a schematic cross-sectional view of the air bed in a loaded state. [Figure 5]A diagram showing the first embodiment of the present invention. Fig. 5(a) is a cross-sectional view near the air injection member of the air bed, showing the state where the lid of the air injection member is closed. Fig. 5(b) is a cross-sectional view near the air injection member of the air bed, showing the state where the lid of the air injection member is open. Fig. 5(c) is a cross-sectional view near the air injection member of the air bed, showing the state where air is being injected. [Figure 6] A diagram showing the second embodiment of the present invention. It is a schematic cross-sectional view of the air bed in a non-loaded state. [Figure 7] A diagram showing the third embodiment of the present invention. Fig. 7(a) is a perspective view of the air bed viewed from the air inlet side, and Fig. 7(b) is a perspective view of the air bed viewed from the side opposite to the air inlet. [Figure 8] A diagram showing the fourth embodiment of the present invention. Fig. 8(a) is a perspective view of the air bed used as a sofa, and Fig. 8(b) is a plan view of the inner cell mat in a state where no air is injected.

Embodiments for Carrying Out the Invention

[0010] Hereinafter, the first embodiment of the present invention will be described with reference to Figs. 1 to 5. The air bed 1 according to this first embodiment is composed of an outer bag 3 and an inner cell mat 5 accommodated inside the outer bag 3, as shown in Figs. 1 and 2. The outer bag 3 is made of a material with low stretchability, for example, a single non-laminated flat yarn woven fabric sewn into a tubular shape to form a bag. In addition, as the material of the outer bag 3, for example, polypropylene (PP) and polyethylene (PE) are assumed. In the case of polyethylene (PE), it can be heat-sealed by heat welding, but in the case of polypropylene (PP), the seal strength is weak even when heat-sealed by heat welding, so it is sewn.

[0011] As shown in Figure 3, the internal cell mat 5 is made by welding both ends of a cylindrical body 11 made of soft film in the longitudinal direction (vertical direction) to welded parts 15 and 16, and welding multiple welded lines 17 (four in this embodiment) at a predetermined pitch in the short direction (horizontal direction). As a result, multiple rod-shaped cells 21 (five in this embodiment) are extended in the longitudinal direction and connected in the short direction (horizontal direction). The welded lines 17 have multiple non-welded parts 23 at equal intervals, and these non-welded parts 23 form multiple ventilation holes 25 that connect adjacent rod-shaped cells 21.

[0012] As shown in Figure 4, of the multiple rod-shaped cells 21, the two at the left and right ends are large-diameter rod-shaped cells 21, 21, and three small-diameter rod-shaped cells 21, 21, 21 are provided between these large-diameter rod-shaped cells 21, 21, 21, resulting in a total of five rod-shaped cells 21, 21, 21, 21, 21 being connected in series.

[0013] As shown in Figure 4(a), in an unloaded state, the large-diameter rod-shaped cells 21, 21 at the left and right ends of the rod-shaped cells 21 of the internal cell mat 5 are in contact with the usable side and the non-usable side of the outer bag 3, while the small-diameter rod-shaped cells 21, 21, 21 are not in contact with at least one of the usable side (upper side in Figure 4) or the non-usable side (lower side in Figure 4(a)) of the outer bag 3. The outer bag 3 is in an unfolded state in this manner.

[0014] As shown in Figure 4(b), when user A lies down on the usable side of the air bed 1 and a load is applied, the small-diameter rod-shaped cells 21, 21, 21 also come into contact with both the usable side (upper side in Figure 4(b)) and the non-usable side (lower side in Figure 4(b)) of the outer bag 3. The outer bag 3 is then stretched out in this state. The outer bag 3 and the inner cell mat 5 are arranged in a dimensional relationship that allows the above-described state to be achieved.

[0015] The welded portion 15 is provided at one end of the internal cell mat 5 in the longitudinal direction (upper end in Figure 3), and the welded portion 16 is provided at the other end of the internal cell mat 5 in the longitudinal direction (lower end in Figure 3). The welded portion 16 is provided a predetermined width inward from the welded portion 15, and the portion outside the welded portion 16 (lower portion in Figure 3) is sewn together with the outer bag 3. In this way, the internal cell mat 5 is integrated with the outer bag 3.

[0016] Furthermore, as shown in Figure 1, an air injection member 31 is installed in the air bed 1. As shown in Figure 5, the air injection member 31 consists of a substantially cylindrical bag penetration member 28, a substantially cylindrical valve seat 29 inserted into the bag penetration member 28, and a lid 30 inserted into the valve seat 29 from the outside. One end of the valve seat 29 has a bottom portion 33 with a flow path 32.

[0017] As shown in Figure 5(a), the bag penetration member 28 is positioned to penetrate the through-hole 26 of the outer bag 3 and the air inlet 27 of the inner cell mat 5. As shown in Figure 5, a check valve 35 is attached to the inner portion of the valve seat 29 inside the inner cell mat 5. Normally, the flow path 32 is closed by the check valve 35, but as shown in Figure 5(c), when air is supplied from the outside of the valve seat 29, the check valve 35 deforms and the flow path 32 is opened. To release the sealed air, the check valve 35 can be deformed to open the passage 32.

[0018] A flange 34 is provided on the outer circumference of the bag penetration member 28. The outer bag 3 and the inner cell mat 5 are welded together between the flange 34 and a fixing ring 36 installed inside the inner cell mat 5, thereby fixing the air injection member 31 to the outer bag 3 and the inner cell mat 5.

[0019] The lid 30 and the valve seat 29 are connected by a strip-shaped connecting portion 37, and the valve seat 29 is connected to a ring-shaped fixing portion 39 by a strip-shaped connecting portion 38. The fixing portion 39 is attached to the bag penetration member 28.

[0020] When not in use, the air bed 1 is stored in a folded state with no air filling the internal cell mat 5. When in use, an air gun (not shown), for example, is inserted into the air injection member 31 to inflate the internal cell mat 5 and make the air bed 1 usable.

[0021] As shown in Figure 1, a gripping portion 41 is provided on the outer circumference of the outer bag 3. The gripping portion 41 has tab portions 43, 43 provided on both sides in the width direction of the outer bag 3. Multiple rope through holes 45 are provided in the tab portions 43, and eyelets 47 are installed in the rope through holes 45. An annular rope 49 is installed on the outer circumference of the outer bag 3, passing through the eyelets 47. As shown in Figure 4(b), user A is placed on the air bed 1, and the air bed 1 is lifted and moved by gripping the rope 49.

[0022] Next, the operation of this first embodiment will be explained. First, when not in use, the air bed 1 is stored in a folded state with no air filling inside the internal cell mat 5. When using the air bed 1 described above, for example, air is injected into the internal cell mat 5 via the air injection member 31 using an air gun (not shown) to inflate it and make it usable.

[0023] The air bed 1 described above is in the state shown in Figure 4(a) when unloaded. The large diameter rod-shaped cells 21, 21 at the left and right ends of the rod-shaped cells 21 of the internal cell mat 5 are in contact with the usable side (upper side in Figure 4(a)) and the non-usable side (lower side in Figure 4(a)) of the outer bag 3. The small diameter rod-shaped cells 21, 21, 21 is in a non-contact state with at least one of the usable side (upper side in Figure 4(a)) or the non-usable side (lower side in Figure 4(a)) of the outer bag 3. The outer bag 3 is in an unfolded state in this manner.

[0024] When user A lies on the usable side of the air bed 1, creating a load, the state is as shown in Figure 4(b). The smaller diameter rod-shaped cells 21, 21, 21 of the rod-shaped cells 21, 21, 21 of the internal cell mat 5 also come into contact with both the usable side (upper side in Figure 4(b)) and the non-usable side (lower side in Figure 4(b)) of the outer bag 3. The outer bag 3 is then stretched in this state. The change in the state of the internal cell mat 5 of the air bed 1 between the unloaded and loaded states allows user A to experience a comfortable user experience.

[0025] To explain the above point in more detail, when user A lies down on the air mattress 1, their weight is first applied to the small-diameter rod-shaped cells 21, 21, 21 directly below them. The pressure inside the small-diameter rod-shaped cells 21, 21, 21 under the user's weight increases, and this pressure increase propagates to the large-diameter rod-shaped cells 21, 21 at both ends. The large-diameter rod-shaped cells 21, 21 at both ends tend to expand in diameter due to the increase in internal pressure, but since the outside is covered by the outer bag 3, this ultimately results in an increase in the tension of the outer bag 3. This increase in tension functions as a force to support user A's weight. In other words, user A's weight is not supported by the internal cell mat 5 alone, but also by the increased tension of the outer bag 3. At that time, since the outer bag 3 is made of a breathable material, the outer bag 3 itself does not become an air bladder.

[0026] Next, we will explain the case where the air bed 1 is used as a stretcher. In this case, as shown in Figure 4(b), the user A (person to be transported) is laid on the inflated air bed 1, and as shown in Figure 1, several people are positioned around the air bed 1 to grasp the rope 49. In this state, the air bed 1 is lifted and transported to the designated location.

[0027] Next, the effects of this first embodiment will be explained. First, it doesn't require a large storage space, can be made ready for use with simple steps, and can provide high-quality sleep. In other words, when not in use, the internal cell mat 5 is not filled with air, and the entire unit can be folded up for storage in a small storage space. Furthermore, when in use, the device can be made ready for use simply by injecting air into the internal cell mat 5 via the air injection member 13 using an air pump. Furthermore, during use, the user A's weight is not supported solely by the internal cell mat 5, but also by the increased tension of the outer bag 3, so the user A does not feel the protrusion of the rod-shaped cells 21 of the internal cell mat 5. Furthermore, even if the load-bearing area changes due to turning over in bed, the structure does not support the load locally, so there are no sudden changes. This effectively reduces discomfort and fluffiness caused by air movement, providing a stable and comfortable sleeping experience. Furthermore, since the rod-shaped cells 21, 21 at both the left and right ends of the rod-shaped cell 21 are larger in diameter, it is possible to prevent them from falling out when user A turns over in their sleep.

[0028] Since the internal cell mat 5 is configured in which a plurality of rod-shaped cells 21 are formed by welding a soft film, it is easy to manufacture. Furthermore, since the outer bag 3 is made by sewing together unlaminated flat yarn woven fabric, the air bed 1, which has appropriate elasticity as bedding, can be easily obtained with a simpler construction.

[0029] Furthermore, since the internal cell mat 5 is made of a soft film and the outer bag 3 is made of unlaminated flat yarn woven fabric, the air bed 1 can be folded with the air removed from the inside via the air injection member 31, thereby reducing the space required for storage.

[0030] Furthermore, the end of the internal cell mat 5 on the side of the welded portion 16 is sewn together with the outer bag 3, and the internal cell mat 5 is integrated with the outer bag 3, so that the internal cell mat 5 does not shift position within the outer bag 3.

[0031] Furthermore, since the air bed 1 is provided with a gripping section 41, it can be easily moved with user A on it, as shown in Figure 4(b). Furthermore, the gripping part 41 has an annular rope 49, which has the advantage of making it easier to grip the air bed 1. Furthermore, the lid 30 and valve seat 29 of the air injection member 31 are connected by a strip-shaped connecting portion 36, the valve seat 29 is connected to a ring-shaped fixing portion 38 by a strip-shaped connecting portion 37, and the fixing portion 38 is attached to the bag penetration member 28, so that the loss of the lid 30 can be prevented.

[0032] We conducted an experiment to confirm that it can provide high-quality sleep. First, using this embodiment, the pressure on various parts of user A's body was measured while user A was lying or sitting on the air bed. The results showed no instances of pressure concentration in specific areas. For example, the development of pressure ulcers in elderly or disabled individuals lying on the air bed is also reduced.

[0033] In another experiment, user A lay on the airbed 1 according to this embodiment for a predetermined time, and waveform changes were measured for the pectoralis major, external oblique, erector spinae (right side), erector spinae (left side), rectus femoris, and gastrocnemius muscles. The user turned over multiple times within the predetermined time. As a result, there were no significant changes in the waveforms of the pectoralis major, external oblique, erector spinae (right side), erector spinae (left side), rectus femoris, and gastrocnemius muscles even when turning over. This means that the user was able to turn over without strain. All experiments were conducted at the Shizuoka Prefectural Industrial Technology Center.

[0034] Next, a second embodiment of the present invention will be described with reference to Figure 6. The air bed 101 according to this second embodiment has substantially the same configuration as the air bed 1 according to the first embodiment, but uses an internal cell mat 103 with a different configuration. The internal cell mat 103 has substantially the same configuration as the internal cell mat 5 of the air bed 1 according to the first embodiment, but has two small-diameter rod-shaped cells 21, and is composed of a total of four rod-shaped cells 21.

[0035] Furthermore, the other components are the same as in the first embodiment described above, and the same parts are denoted by the same reference numerals in the figures, and their descriptions are omitted.

[0036] In this second embodiment, the same functions and effects as those of the first embodiment can be achieved. Furthermore, in the first embodiment described above, there is a concern that if user A lies down in the center in the width direction, the rod-shaped cells 21 in the center in the width direction may come into contact with the spine and cause discomfort. However, in this second embodiment, the center in the width direction is between the rod-shaped cells 21, so such discomfort can be eliminated.

[0037] Next, a third embodiment of the present invention will be described with reference to Figure 7. The air bed 201 according to this third embodiment has substantially the same configuration as the air bed 1 according to the first embodiment and the air bed 101 according to the second embodiment, but uses an outer bag 203 with a different configuration. The outer bag 203 described above is made by sewing the outer edges of two flat yarn woven fabrics 205 and 207 together to form a bag.

[0038] A gripping portion 211 is provided on the outer periphery of the outer bag 3. Multiple tabs 213 are provided on the gripping portion 211. The multiple tabs 213 are attached to the outer periphery of the outer bag 3 together with the flat yarn woven fabrics 205 and 207 by sewing their base ends together. The tabs 213 are provided with rope through holes 215, and eyelets 217 are installed in the rope through holes 215. A rope 49 is installed on the outer periphery of the outer bag 203, passing through the eyelets 217. Furthermore, the other configurations are the same as in the first and second embodiments described above, and the same parts are denoted by the same reference numerals in the figures, and their descriptions are omitted.

[0039] In this third embodiment as well, the same functions and effects as those of the first and second embodiments can be achieved.

[0040] Next, a fourth embodiment of the present invention will be described with reference to Figure 8. The air bed 301 according to this fourth embodiment has substantially the same configuration as the air bed 1 according to the first embodiment, but as shown in Figure 8(a), it is folded in the middle of its length, and the rope 303 is passed through the eyelet 47 at the end to maintain the folded state and use it like a sofa.

[0041] An internal cell mat 305 is used in the air bed 301 described above. The internal cell mat 305 has substantially the same configuration as the internal cell mat 5 of the air bed 1 according to the first embodiment, but as shown in Figure 8(b), a plurality of welded portions 307 extending in the width direction (up and down direction in Figure 8(b)) are provided in the central part in the length direction (left and right direction in Figure 8(b)) to make it easier to fold.

[0042] In this fourth embodiment, in addition to providing the same functions and effects as the first to third embodiments, it can also be used as a sofa.

[0043] Furthermore, the present invention is not limited to the first to fourth embodiments described above. First, in the first to fourth embodiments described above, the case in which an internal cell mat is manufactured using a cylindrical body made of a flexible film was explained as an example, but the internal cell mat may also be manufactured by welding two flexible films together. Furthermore, while the first to fourth embodiments described above used examples of 5 and 4 rod-shaped cells, the explanation is not limited to these cases, and various numbers of rod-shaped cells are possible. Furthermore, it is conceivable that the air beds according to the first to third embodiments can be folded and used as sofas, similar to the air bed according to the fourth embodiment. Furthermore, while the first to fourth embodiments described above used air mattresses for use in evacuation shelters during disasters as examples, the invention is not limited to these, and its application can also be considered for air mattresses used outdoors, such as for camping, or for air mattresses used under normal circumstances. Furthermore, while the first to fourth embodiments described above have been explained using examples where the outer bag is formed into a bag shape by sewing, the invention is not limited to this, and for example, it is also possible to form the bag shape by heat welding. In addition, the integration of the outer bag and the inner cell mat can also be considered by heat welding. Furthermore, while the first to fourth embodiments described above were explained using the example of attaching a rope around the exterior body, the invention is not limited to this, and configurations without attaching a rope are also conceivable. Furthermore, the illustrations shown are merely examples. [Industrial applicability]

[0044] The present invention relates, for example, to a cell mat, an air bed, and a method for manufacturing a cell mat, which can be used in evacuation shelters during disasters. In particular, it relates to a product that does not require a large storage space, can be made ready for use with simple work, and can provide high-quality sleep. It is suitable, for example, for bedding used in emergencies such as disasters. [Explanation of symbols]

[0045] 1 Airbed 3. Outer bag 5 Internal Cell Mat 17 Welded reinforcement 21. Rod-shaped cells 25 ventilation holes 41 Gripping part 101 Air Bed 103 Internal Cell Mat 201 Air Bed 203 Outer bag 205 Flat Yarn Fabric 207 Flat Yarn Fabric 211 Gripping part 301 Air Bed 305 Internal Cell Mat

Claims

1. Multiple rod-shaped cells are arranged in a series horizontally. The rod-shaped cells at both ends are larger in diameter than the rod-shaped cells in between. The above multiple rod-shaped cells are connected in a series. A cell mat characterized by having an air injection member equipped with a check valve.

2. In the cell mat according to claim 1, The above multiple rod-shaped cells are, The film tube is welded to both ends in the vertical direction. They are connected by being intermittently welded along multiple welding bars that are spaced apart in the horizontal direction. A cell mat characterized by the following features.

3. In the cell mat according to claim 1 or claim 2, A cell mat characterized in that there are multiple, odd-numbered, rod-shaped cells between the rod-shaped cells at both the left and right ends.

4. In the cell mat according to claim 1 or claim 2, A cell mat characterized in that there are multiple, even number of, rod-shaped cells between the rod-shaped cells at both the left and right ends.

5. In the cell mat according to claim 1 or claim 2, The above-mentioned check valve is characterized in that it normally blocks the flow path and deforms to open the flow path when air is supplied.

6. A cell mat according to any one of claims 1 to 5, The outer bag in which the above cell mat is placed, An air bed characterized by having the following features.

7. In the air bed according to claim 6, An air bed characterized in that the above-mentioned air injection member penetrates the above-mentioned outer bag and is exposed to the outside.

8. Claim 6 is the air bed described above, The air bed is characterized by the fact that the outer bag described above is made into a bag shape by sewing.

9. In the air bed according to claim 8, The air bed is characterized by having an outer bag made of unlaminated flat yarn woven fabric that has been sewn together.

10. In the air bed according to claim 6, The air bed is characterized in that the outer bag described above is formed into a bag shape by heat welding.

11. In the air bed according to claim 6, An air bed characterized in that the ends of the cell mat described above are fixed to the outer bag described above.

12. In the air bed according to claim 6, The air bed is characterized by having a gripping portion on the outer bag described above.

13. In the air bed according to claim 12, An air bed characterized by having a rope attached to the gripping part described above.

14. In the air bed according to claim 13, An air bed characterized by being able to be used as a sofa by being held in a folded state by the aforementioned rope.

15. The film tube is welded to both ends in the vertical direction. Next, intermittent welding was performed along multiple welding lines that were spaced apart in the lateral direction. A method for manufacturing cell mats, characterized by the following features.

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