CN113633131B - Pad device and method for manufacturing fluid cell - Google Patents
Pad device and method for manufacturing fluid cell Download PDFInfo
- Publication number
- CN113633131B CN113633131B CN202110938591.7A CN202110938591A CN113633131B CN 113633131 B CN113633131 B CN 113633131B CN 202110938591 A CN202110938591 A CN 202110938591A CN 113633131 B CN113633131 B CN 113633131B
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- Prior art keywords
- flexible tube
- fluid
- fluid cell
- pad device
- down direction
- Prior art date
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- 239000012530 fluid Substances 0.000 title claims abstract description 136
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims abstract description 8
- 238000005192 partition Methods 0.000 claims description 12
- 238000003466 welding Methods 0.000 claims description 10
- 238000006073 displacement reaction Methods 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 abstract description 19
- 230000004048 modification Effects 0.000 description 10
- 238000012986 modification Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 6
- 238000007789 sealing Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 210000005069 ears Anatomy 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
- A47C27/08—Fluid mattresses or cushions
- A47C27/081—Fluid mattresses or cushions of pneumatic type
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
- A47C27/08—Fluid mattresses or cushions
- A47C27/085—Fluid mattresses or cushions of liquid type, e.g. filled with water or gel
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Mattresses And Other Support Structures For Chairs And Beds (AREA)
- External Artificial Organs (AREA)
- Combined Devices Of Dampers And Springs (AREA)
Abstract
Provided are a fluid cell, a pad device, and a method for manufacturing a fluid cell, wherein the fluid cell (15) can be manufactured easily while suppressing man-hours. The fluid cell includes: a flexible tube (15 a) that can be filled with a fluid inside the flexible tube (15 a); and a closing portion (15 b) which is formed by fixing the inner peripheral surfaces of the flexible tube (15 a) to each other in a state of sandwiching the flexible tube (15 a) in the radial direction, and which closes the openings at both ends of the flexible tube (15 a), wherein a valley-folded portion (16) which is folded inward in one direction is formed at the axial end of the flexible tube (15 a), the one direction being one direction intersecting the direction in which the flexible tube (15 a) is sandwiched by the closing portion (15 b) in the radial direction of the flexible tube (15 a), and the closing portion (15 b) is arranged at a position in which the valley-folded portion (16) is formed in the axial direction.
Description
This application is a divisional application of the following patent applications:
application number: 201710408730.9
Filing date: 2017, 6 and 2 days
The invention name is as follows: pad device and method for manufacturing fluid cell
Technical Field
The present invention relates to a fluid cell, a pad device, and a method for manufacturing a fluid cell.
Background
Conventionally, there is known a fluid cell including: a flexible tube capable of filling the interior of the flexible tube with a fluid; and a closing portion which is formed by fixedly connecting inner peripheral surfaces of the flexible tube to each other in a state of sandwiching the flexible tube in a radial direction, and which closes openings at both ends of the flexible tube, respectively. In such a fluid cell, when the fluid is filled into the flexible tube, a corner is generated at an axial end of the flexible tube. The corner portion is exposed to an acute angle toward the outside in one direction intersecting the direction in which the flexible tube is sandwiched by the closing portion in the radial direction of the flexible tube.
In order to suppress the occurrence of the corner portion, a fluid cell is known, for example, as shown in patent document 1 below. In this fluid cell, the generation of the corner portion is suppressed by forming an ear portion, which is triangular in plan view and has a base extending in the sandwiching direction and a vertex angle protruding outward in the axial direction, at an axial end portion of the flexible tube after the formation of the closed portion.
Prior art literature
Patent literature
Patent document 1: japanese patent laid-open No. 10-5289.
However, in the conventional fluid cell, since it is necessary to separately form the ear portions after forming the closed portion, the number of working steps increases.
Disclosure of Invention
The present invention has been made in view of the above circumstances, and an object thereof is to provide a fluid cell which can be manufactured easily while being compressed.
(1) The fluid cell of the present invention comprises: a flexible tube capable of being filled with a fluid inside the flexible tube; and a pair of closing portions that are formed by fixedly connecting inner peripheral surfaces of the flexible tube to each other in a state of sandwiching the flexible tube in a radial direction, and that close both end openings of the flexible tube, respectively, wherein a valley-folded portion that is folded inward in one direction is formed at an axial end of the flexible tube, the one direction being one direction intersecting a direction sandwiching the flexible tube at the closing portion in a radial direction of the flexible tube, and the closing portions are arranged at positions where the valley-folded portions are formed along the axial direction.
In this invention, the closing portion is disposed at a position where the valley-folded portion is formed in the axial direction. Therefore, when the flexible tube is inflated by filling the fluid into the flexible tube, the axial end portions of the flexible tube expand in the direction in which the flexible tube is sandwiched so that the inner surfaces of the valley folds are separated from each other. This can suppress the following: a corner portion is formed at an end portion of the flexible tube in the axial direction, the corner portion being sharp outward in the one direction. Further, since the corner portion can be suppressed from being generated at the axial end portion of the flexible tube by adjusting the position of the closed portion in addition to the formation of the valley-folded portion, man-hours can be suppressed and the fluid cell can be easily manufactured, compared with a structure in which the ear portion having a triangular shape in plan view is separately formed at the radial end portion of the closed portion.
(2) In addition to the fluid cell of the above (1), the following structure may be adopted: a pair of inner surfaces of the valley fold portion facing each other are formed with fixing portions for fixing the inner surfaces to each other, and the closing portion and the fixing portions are integrally formed.
In this case, when the flexible tube is inflated by filling the fluid into the flexible tube, the inner surfaces of the valley-folded portions fixed to the fixed portions are mutually restrained. Therefore, the outer peripheral surface of the axial end portion of the flexible tube located around the fixing portion can be formed in a flat surface shape orthogonal to the one direction.
In addition, the closing portion and the fixing portion can be integrally formed, and therefore, the fluid cell can be further easily manufactured.
(3) In addition to the fluid cell of the above (1) or (2), the following structure may be adopted: the closing portion is disposed at a position closer to an inner side of the flexible tube in an axial direction than both end edges of the flexible tube, and the flexible tube has an ear portion protruding outward in the axial direction from the closing portion.
In this case, since the flexible tube has the ear portion, for example, a mounting member for mounting the fluid cell to the cushion device is provided at the ear portion.
(4) In addition to the fluid cell of the above (3), the following structure may be adopted: the closing portion extends in the one direction and is disposed in the entire area of the flexible tube in the one direction, and the ear portion is formed in the entire area of the flexible tube in the one direction.
In this case, the ear portion is disposed in all regions of the flexible tube along the one direction. Therefore, the area of the ear portion can be ensured to be large, and for example, the number, shape, and the like of the attachment members attached to the ear portion can be selected so as to have a degree of freedom.
(5) In addition to the fluid cell of the above (3) or (4), the following structure may be adopted: a restricting portion is formed in the ear portion, and the restricting portion is connected to the other fluid cell to restrict relative displacement of the restricting portion and the other fluid cell.
In this case, the restriction portion formed in the ear portion can control the relative displacement of the plurality of fluid cells, thereby improving the self-standing property of the fluid cells.
(6) In addition to the fluid cell according to any one of the above (1) to (5), the following structure may be adopted: the flexible tube is provided with a partition wall which divides the interior of the flexible tube into two filling chambers, and the partition wall divides the interior of the flexible tube in the one direction.
In this case, the inside of the flexible tube is partitioned into two filling chambers in the one direction in which the valley fold portion is folded. Therefore, the flexible tube can be easily made to stand by itself in the one direction. Further, since the outer peripheral surface located around the fixing portion can be formed in a flat shape orthogonal to the one direction, a user lying on the fluid cell can be provided with a good use experience.
(7) The pad device of the present invention is characterized in that the fluid cell is the fluid cell described in any one of (1) to (6) above.
In this case, the above-described respective effects can be exerted on the pad device.
(8) The method for producing a fluid cell according to the present invention is the method for producing a fluid cell according to (2) above, wherein the fixing portion and the sealing portion are formed simultaneously.
In this case, since the fixing portion and the closing portion are formed at the same time, man-hours can be suppressed and the fluid cell can be easily manufactured.
According to the present invention, man-hours can be suppressed and the fluid cell can be easily manufactured.
Drawings
Fig. 1 is a schematic perspective view of a pad device according to a first embodiment of the present invention.
Fig. 2 is a perspective view of a fluid cell in the pad device shown in fig. 1.
Fig. 3 is a front view of an axial end of the fluid cell shown in fig. 2.
Fig. 4 (a) and 4 (b) are front and top views, respectively, of the process of filling the fluid cell shown in fig. 3 with air.
Fig. 5 (a) is a diagram showing a valley-folding step in the manufacturing process of the fluid cell shown in fig. 2, fig. 5 (b) is a diagram showing a closing step and a fixing step in the manufacturing process of the fluid cell shown in fig. 2, and fig. 5 (c) is a diagram showing a step of disposing the mounting member in the manufacturing process of the fluid cell shown in fig. 2.
Fig. 6 (a) and 6 (b) are front views showing a first modification example and a second modification example, respectively, of modification examples of the fluid cell according to the first embodiment.
Fig. 7 is a perspective view showing a third modification of the fluid cell according to the first embodiment.
Fig. 8 is a perspective view showing a fluid cell according to a second embodiment of the present invention.
Fig. 9 is a side view showing the fluid cell shown in fig. 8.
Symbol description
10. Pad device
15. 25, 35, 45 fluid cells
15a flexible tube
15b, 25b closure
16. Valley-folded part
16c inner surface
17. Fixing part
18. 48 ear portions
19. 29 mounting parts (restriction part)
40. Connecting piece
49. Limiting part
Detailed Description
(first embodiment)
Next, a pad device 10 according to a first embodiment of the present invention will be described with reference to fig. 1 to 6. The cushion device 10 includes a bed device on which a user lies or a seat cushion device on which a user sits, and in this embodiment, as an example of the cushion device 10, a bed device is used. Hereinafter, the structure of each portion will be described with reference to the front-rear direction X, the left-right direction Y, and the up-down direction Z of the pad device 10.
As shown in fig. 1, the pad device 10 includes: a pad 11, the pad 11 being for a user to lie on; a gas supply/exhaust unit 12, the gas supply/exhaust unit 12 supplying gas to and exhausting gas from the pad unit 11; and a control unit 13, wherein the control unit 13 controls the air supply/exhaust unit 12.
The pad 11 has a plurality of fluid cells 15, and is filled with air by supplying air to the inside of these fluid cells 15, thereby supporting the load of the user lying on the pad 11. The internal pressure of the fluid cell 15 corresponds to the hardness of the pad 11, and the internal pressure of the fluid cell 15 is set according to the weight of the user, so that the hardness of the pad 11 can be set to the hardness that is optimal for the user.
The fluid cells 15 are rod-shaped cells extending in the left-right direction Y in the pad 11, and in the illustrated example, a plurality of fluid cells 15 are arranged in series in the front-rear direction X to constitute the pad 11. The fluid cell 15 is formed of a film material such as a vinyl chloride film or a urethane film, and is rounded around the central axis O1, and both peripheral ends of the fluid cell 15 are connected by welding or the like, for example. Zhou Duanxian 15f extending in the left-right direction Y is formed at the welded portion of the film material. In the fluid cell 15, a peripheral line 15f is located at a lower end portion, and a portion of the film material located above the peripheral line 15f forms a flexible tube 15a described later.
The fluid cells 15 disposed adjacent to each other may or may not be fixed to each other. The fluid cells 15 may be attached to a cover, not shown, which covers the plurality of fluid cells 15 integrally, via, for example, a button, a cord, or the like, which is an attachment member 19, which will be described later.
As shown in fig. 2, the fluid cell 15 includes: a flexible tube 15a, which is capable of filling the inside of the flexible tube 15a with a fluid; and a closing portion 15b, wherein the closing portion 15b is formed by fixedly connecting inner peripheral surfaces of the flexible tube 15a to each other in a state of sandwiching the flexible tube 15a in the radial direction, and closes openings at both ends of the flexible tube 15a. The central axis O1 of the flexible tube 15a extends in the left-right direction Y. In a plan view of the flexible tube 15a as viewed from the left-right direction Y, one of the radial directions orthogonal to the central axis O1 extends in the up-down direction Z. The flexible tube 15a has a rectangular shape when viewed in the front-rear direction X and the left-right direction Y. The flexible tube 15a may be formed of a plurality of film materials.
The flexible tube 15a is formed with a partition wall 15c extending in the left-right direction Y. The partition wall 15c is formed near the central portion of the flexible tube 15a in the up-down direction Z. The inside of the fluid cell 15 (flexible tube 15 a) is partitioned into two filling chambers in the up-down direction Z by a partition wall 15c. Each filling chamber is provided with an air supply/exhaust port 15e for supplying and exhausting air. Each of the air supply and exhaust ports 15e is connected to a pipe forming the air supply and exhaust portion 12.
As shown in fig. 4, a valley fold portion 16 is formed at an end portion of the flexible tube 15a in the left-right direction Y, which is folded inward in the up-down direction Z, which is one direction intersecting with the direction in which the flexible tube 15a is sandwiched by the closing portion 15b in the radial direction of the flexible tube 15a. The valley portions 16 are folded in one direction in the radial direction of the flexible tube 15a, and are folded in the lower side in the vertical direction Z in the illustrated example. In a state where air is discharged from the fluid cell 15 (flexible tube 15 a), the valley fold portion 16 is formed over the entire length of the flexible tube 15a in the left-right direction Y in a state where the fluid cell 15 is folded in the front-rear direction X. That is, as shown in fig. 4, in the process of filling the fluid cell 15 with air, the valley fold portion 16 is formed over the entire length of the flexible tube 15a in the left-right direction Y. The valley folds 16 may be formed on the upper surface and the lower surface, respectively.
The closing portion 15b is disposed at a position where the valley-folded portion 16 is formed along the left-right direction Y. That is, the closing portion 15b is formed to overlap with the valley-folded portion 16.
A pair of closing portions 15b are formed at both end portions of the fluid cell 15 in the left-right direction Y, respectively. The sealing portion 15b extends in the up-down direction Z and is disposed in the entire area of the flexible tube 15a.
The sealing portion 15b seals the openings at both ends of the flexible tube 15a by bonding the inner peripheral surfaces of the flexible tube 15a to each other. In the illustrated example, the closing portion 15b is formed by welding inner peripheral surfaces of the flexible tube 15a to each other.
As shown in fig. 2 and 3, a pair of inner surfaces 16c of the valley fold portion 16 facing each other are formed with fixing portions 17 for fixing the inner surfaces 16c to each other. The fixing portion 17 and the closing portion 15b are integrally formed. The fixing portion 17 and the closing portion 15b are formed of welding lines that longitudinally penetrate the flexible tube 15a in the up-down direction Z.
In a state where the air is filled into the fluid cells 15, the valley folds 16 are formed at both ends in the left-right direction Y of the upper surface facing upward, of the outer surface of the flexible tube 15a.
The valley-folded portion 16 includes a valley-folded concave portion 16a and an opposing portion 16b. The valley fold portion 16 is recessed downward and opens upward. The valley-fold concave portion 16a has a triangular shape in which two top portions are arranged along the front-rear direction X in a plan view, and the remaining top portions are arranged outside in the left-right direction Y. The opposing portion 16b extends from an outer end portion of the valley-folded concave portion 16a in the left-right direction Y to the outside in the left-right direction Y. The opposing portion 16b is formed by a pair of front and rear inner surfaces 16c of the valley-folded portion 16 opposing each other in the front-rear direction X. A fixing portion 17 is formed at an inner end of the opposite portion 16b in the left-right direction Y.
In the present embodiment, the closing portion 15b is disposed at a position inside the flexible tube 15a in the left-right direction Y of the flexible tube 15a with respect to both end edges of the flexible tube 15a, and the ear portion 18 is formed on the flexible tube 15a, and the ear portion 18 protrudes from the closing portion 15b to the outside in the left-right direction Y. The ears 18 are formed at both ends of the flexible tube 15a in the left-right direction Y. The ear 18 has a rectangular shape long in the up-down direction Z when viewed from the front-rear direction X.
Two attachment members (restricting portions) 19 are disposed at both end portions of the ear portion 18 in the up-down direction Z with a gap therebetween in the up-down direction Z. In the illustrated example, the attachment member 19 is a synthetic resin snap button disposed in a hole formed in the ear portion 18. The fluid cell 15 is attached to a cover, not shown, of the pad device 10 by the attachment member 19. The mounting member 19 is connected to the other fluid cells 15 via the cover, and functions as a restricting portion for restricting relative displacement of the two.
The attachment member 19 may be disposed in one or three or more, or may be disposed in a central portion of the ear portion 18 in the up-down direction Z. Further, as the mounting member 19, a metal snap button may be used.
Next, a method of manufacturing the fluid cell 15 will be described with reference to fig. 5.
First, the film material forming the fluid cell 15 is rounded around the central axis O1, and both peripheral end portions of the fluid cell 15 are welded to each other and connected to form a peripheral end line 15f. Thereby, the flexible tube 15a is formed.
Next, as shown in fig. 5 (a), as a valley-folding step, an upper end portion of the outer peripheral surface of the flexible tube 15a extending in the left-right direction Y is folded inward in the up-down direction Z, thereby forming a valley-folded portion 16. In the illustrated example, the valley portions 16 are formed in parallel with the central axis O1 over the entire length of the flexible tube 15a. In the valley-folding step, it is not necessarily required to form the valley-folded portion 16 over the entire length of the flexible tube 15a, and it is sufficient to fold at least the end portion of the flexible tube 15a in the left-right direction Y inward in the up-down direction Z. The valley fold portion 16 may be formed obliquely with respect to the central axis O1.
In addition, the maximum depth of the valley fold line 16d divided at the bottom of the groove of the Gu She portion 16 is preferably 15% to 50% of the thickness dimension (hereinafter referred to as the cell width of the central portion) of the central portion in the lateral direction Y in the front-rear direction X of the upper surface of the fluid cell 15 in the air-filled state.
When the maximum depth of the valley fold line 16 was 15% or less of the cell width of the central portion, it was confirmed that a corner portion pointed upward slightly occurred at the end portion of the flexible tube 15a in the left-right direction Y. When the maximum depth of the valley fold line 16d is 50% or more of the cell width in the central portion, it is confirmed that the thickness dimension (hereinafter referred to as the cell width of the end portion) in the front-rear direction X of the two end portions in the left-right direction Y of the upper surface of the fluid cell 15 is larger than the cell width in the central portion.
Next, as shown in fig. 5 (b), the inner peripheral surfaces of the flexible tube 15a are connected to each other in all regions in the up-down direction Z by sandwiching and welding the flexible tube 15a from both sides in the front-back direction X by welding means not shown, etc. at the opening end portion of the flexible tube 15a. In this way, a fixing step of fixing the pair of inner surfaces 16c of the valley fold portions 16 to each other and a closing step of closing the openings at both ends of the flexible tube 15a by the closing portions 15b are performed simultaneously.
As shown in fig. 5 (c), by this welding operation, closing portions 15b extending in the up-down direction Z are formed at both end portions of the flexible tube 15a in the left-right direction Y, and fixing portions 17 are formed at portions of the closing portions 15b located above the valley fold lines 16d of the valley fold portions 16. Further, the flexible tube 15a is provided with the ear portions 18 at positions outside the closing portion 15b in the left-right direction Y. In addition, when welding both peripheral ends of the film material to each other and forming Zhou Duanxian f as described above, the welding operation may be performed simultaneously, thereby simultaneously forming Zhou Duanxian f, the sealing portion 15b, and the fixing portion 17.
Then, the attachment members 19 are disposed at both ends of the ear portion 18 in the up-down direction Z. In the illustrated example, the upper mounting member 19 is mounted to the facing portion 16b of the Gu She portion 16.
When the fluid cells 15 thus manufactured are used as the pad device 10, the air is filled into the fluid cells 15 by the air supply and exhaust unit 12 and the control unit 13 in a state where the plurality of fluid cells 15 are attached to the cover of the pad device 10 by the attachment member 19.
Here, in the air-filled state, the cell width of the end portion is about twice the depth of the valley fold section 16 up to the valley fold line 16 d. Accordingly, the depth of the valley folds 16 can be set based on the cell width of the end portion when filled with air.
Further, it is preferable that the receiving member to which the mounting member 19 is attached is provided at the front-rear direction X of the cover of the pad device 10 at a distance (pitch) equal to the cell width of the end portion, and the mounting member 19 is provided at the ear portion 18 of the fluid cell 15. This can reduce the gap between the fluid cells 15 in the front-rear direction X, and prevent the hand from entering the gap formed between the fluid cells 15 when the hand is placed between the fluid cells 15 by the user.
From the above, it can be considered that: by setting the depth of the valley folds 16 to half the pitch, the gap between the fluid cells 15 can be effectively narrowed.
Next, a modification of the fluid cell 15 will be described.
As shown in fig. 6 (a), in the fluid cell 25 of the first modification, the closed portion 25b is formed in a curve shape that gradually protrudes outward in the left-right direction Y as going inward in the up-down direction Z. By forming the closed portion 25b in this way, it is possible to easily secure portions where the mounting members 19 are disposed at both end portions in the up-down direction Z of the ear portion 18. According to this structure, the mounting member 19 can be easily disposed in the vicinity of the central portion of the fluid cell 25 in the front-rear direction X when the ear portion 18 is folded in the front-rear direction X, as compared with the case where the closing portion 25b is formed in a straight line extending in the up-down direction Z.
In addition, as another embodiment of the closing portion, an inclined line that gradually faces outward in the left-right direction Y as it goes upward in a plan view viewed from the front-rear direction X, or an inclined line that gradually faces inward in the left-right direction Y as it goes upward in the plan view may be formed.
Next, as shown in fig. 6 (b), in the fluid cell 35 of the second modification, a surface fastener extending in the up-down direction Z is disposed on the ear portion 18 as the attachment member 29. The surface fastener is disposed in almost all regions of the ear 18 in the up-down direction Z. By using the surface fastener as the mounting member 29 in this way, the mounting member 19 can be easily attached and detached as compared with a structure using a snap button. In addition, when the surface fastener is disposed in a wide range of the ear portion 18, the mounting strength of the mounting member 29 can be increased.
In another form of the mounting member, the following structure may be adopted: the ear portion 18 is provided with fixing holes, and the fixing cord having the joint portions formed at predetermined intervals is passed through the fixing holes of the plurality of fluid cells 15 arranged in the front-rear direction X.
Next, as shown in fig. 7, in the fluid cell 15A of the third modification example, the fixing portion 17 is not formed in the valley-folded portion 16, and the inner surfaces 16c of the valley-folded portion 16 are not fixed to each other. Therefore, the valley-folded portion 16 is not formed with a portion where the front-rear pair of inner surfaces 16c face each other in the front-rear direction X, and the front-rear pair of inner surfaces 16c and the valley-folded concave portion 16a are integrated and open upward. In the fluid cell 15A, one attachment member 19 is disposed below the ear 18.
As described above, according to the fluid cell 15 of the present embodiment, the closed portion 15b is disposed at a position where the valley-folded portion 16 is formed along the axial direction. Therefore, when the flexible tube 15a is inflated by filling the fluid into the flexible tube 15a, the axial end portions of the flexible tube 15a are expanded in the direction in which the flexible tube 15a is sandwiched so that the inner surfaces of the valley portions 16 are separated from each other. This can suppress the following: a corner portion that is sharp toward the outside (upper side) in the up-down direction Z is generated at an end portion of the flexible tube 15a in the left-right direction Y. Further, since the corner portions can be suppressed from being generated at the end portions of the flexible tube 15a in the left-right direction Y by adjusting the position of the closed portion 15b in addition to the formation of the valley portions 16, the fluid cell 15 can be manufactured easily while suppressing man-hours, as compared with a structure in which the ear portions having a triangular shape in plan view are separately formed at the end portions of the closed portion 15b in the up-down direction Z.
When the flexible tube 15a is inflated by filling the fluid into the flexible tube 15a, the inner surfaces 16c of the valley-folded portions 16 fixed to the fixing portions 17 are mutually restrained. Therefore, the outer peripheral surface of the axial end portion of the flexible tube 15a located around the fixed portion 17 can be formed into a flat surface orthogonal to the one direction in which the valley-folded portion 16 in the radial direction of the flexible tube 15a is folded.
Further, the closing portion 15b and the fixing portion 17 can be integrally formed, and thus the fluid cell 15 can be manufactured more easily.
Further, since the ear portion 18 is formed in the flexible tube 15a, for example, a mounting member 19 or the like for mounting to the cushion device 10 is disposed on the ear portion 18.
The ear portion 18 is disposed in the entire area of the flexible tube 15a along the one direction. Therefore, the area of the ear portion 18 can be ensured to be large, and for example, the number, shape, and the like of the attachment members 19 attached to the ear portion 18 can be selected so as to have a degree of freedom.
Further, the mounting members 19 formed on the ears 18 restrict the relative displacement of the adjacent fluid cells 15, and thus the self-standing property of the fluid cells 15 can be improved.
The interior of the flexible tube 15a is partitioned into two filling chambers in one direction in which the valley fold portion 16 is folded. Therefore, the flexible tube 15a can be easily made to stand by itself in the one direction. Further, since the outer peripheral surface around the fixing portion 17 can be formed in a flat shape orthogonal to the one direction, a user lying on the fluid cell 15 can be provided with a good use experience.
Further, according to the pad device 10 of the present embodiment, since the fluid cells 15 are provided, the above-described respective effects can be exerted on the pad device 10.
In addition, according to the method of manufacturing the fluid cell 15 of the present embodiment, since the fixing step and the closing step are performed simultaneously, the fluid cell 15 can be easily manufactured while being compressed.
(second embodiment)
Next, a fluid cell 45 according to a second embodiment of the present invention will be described with reference to fig. 8 and 9.
In the second embodiment, the same components as those of the first embodiment are denoted by the same reference numerals, and description thereof is omitted, but only the differences will be described.
As shown in fig. 8 and 9, the plurality of fluid cells 45 are connected to each other in the front-rear direction X, thereby forming a fluid cell unit 50. In the illustrated example, three fluid cells 45 are interconnected. The number of connected fluid cells 45 may be two or four or more.
A connecting piece 40 is disposed at a lower portion of the fluid cells 45, and the connecting piece 40 extends from the outer peripheral surface in the front-rear direction X over the entire area in the left-right direction Y, and connects the fluid cells 45 adjacent to each other. The connecting piece 40 is integrally formed with the outer wall of the flexible tube 45a of each fluid cell 45. In this way, the plurality of fluid cells 45 are connected by the connecting piece 40 to form the fluid cell unit 50, and thus the operability of the fluid cells 45 can be ensured in the pad device 10.
In the present embodiment, the restricting portion 49 is formed in the ear portion 48 of the fluid cell 45, and the restricting portion 49 is connected to the adjacent other fluid cell 45 to restrict the relative displacement of the fluid cells. The restricting portion 49 extends from an end portion of the ear portion 48 in the left-right direction Y in the front-rear direction X. The restriction portion 49 is formed in a rectangular belt shape long in the front-rear direction X when viewed from the left-right direction Y.
The restricting portions 49 of the ear portions 48 formed in the mutually adjacent fluid cells 45 are connected to each other. In the illustrated example, two restricting portions 49 are formed in each of the ear portions 48 so as to be different in position in the up-down direction Z. The restricting portion 49 located above among the restricting portions 49 is formed at the upper end portion of the ear portion 48, and the restricting portion 49 located below is located at the center portion in the up-down direction Z. The restricting portions 49 are mutually engaged with each other by engaging portions not shown in the drawings, and are connected to each other.
As described above, according to the fluid cell 45 of the present embodiment, the restriction portions 49 formed in the ear portions 48 can restrict the relative displacement between the adjacent fluid cells 45, and the self-standing property of the fluid cell 45 can be improved.
The protective scope of the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.
For example, in the above embodiment, the configuration in which the fluid cell 15 filled with air is used as the fluid cell is shown, but the present invention is not limited to this configuration, and the fluid cell filled with liquid may be used.
In the above embodiment, the structure in which the closing portion 15b and the fixing portion 17 are integrally formed is shown, but the present invention is not limited to this configuration. The closing portion and the fixing portion may be formed separately, and for example, other forms in which the fixing portion is located inward in the left-right direction Y of the closing portion may be suitably employed.
In the above embodiment, the structure in which the ear portion 18 is formed in the flexible tube 15a is shown, and the ear portion 18 and the closing portion 15b are connected in all regions in the up-down direction Z and protrude outward in the left-right direction Y. The ear portion may be connected to the closing portion in the entire region in the vertical direction Z, or the ear portion may not be formed in the flexible tube.
In the above embodiment, the structure in which the partition wall 15c is provided in the flexible tube 15a is shown, and the partition wall 15c partitions the inner region of the flexible tube 15a into two filling chambers in the up-down direction Z. The partition wall may partition the inside of the flexible tube in a direction different from the vertical direction Z, or may not be provided in the flexible tube.
The components of the above-described embodiment may be appropriately replaced with well-known components within a range not departing from the gist of the present invention, and the above-described modifications may be appropriately combined.
Claims (10)
1. A pad assembly comprising a plurality of fluid cells, wherein said fluid cells comprise:
a flexible tube capable of being filled with a fluid inside the flexible tube;
a pair of closing portions that close openings at both ends in an axial direction of the flexible tube, respectively; and
an ear portion protruding from the closing portion to an outer side in an axial direction of the flexible tube,
when the flexible tube is filled with fluid, the height of the upper surface of the flexible tube above in the up-down direction is higher than the height of the whole of the pair of closing portions and the ear portion,
a surface for a user in the pad device is constituted by the upper surfaces of a plurality of the fluid cells,
a valley-folded portion which is folded downward in the up-down direction is formed over the entire length of the flexible tube on the upper surface of the flexible tube.
2. The pad device of claim 1,
the ear portion is formed with a restriction portion that is connected to the other fluid cell and restricts relative displacement of the ear portion and the other fluid cell.
3. The pad device of claim 1,
the fluid cell further includes a fixing portion disposed at an end portion of the flexible tube in an axial direction, the fixing portion fixing inner surfaces of the valley-folded portions facing each other to each other so as to be located inward of the closing portion in a width direction of the flexible tube, the width direction being a direction orthogonal to the axial direction and the up-down direction.
4. The pad device of claim 2,
the ear portion is formed in the entire region of the flexible tube along the up-down direction.
5. The pad device of claim 4,
the closing portion is formed in a curve shape that gradually protrudes outward in the axial direction as going inward in the up-down direction, and two restricting portions are disposed at both ends in the up-down direction of the ear portion with a gap therebetween in the up-down direction.
6. The pad device of claim 4,
the ear portion is provided with a surface fastener extending in the up-down direction as the restricting portion, and the surface fastener is disposed in almost all regions of the ear portion in the up-down direction.
7. The pad device of claim 4,
the restricting portion is formed in a rectangular strip shape in the width direction, which is a direction orthogonal to the axial direction and the up-down direction, extending from an end portion of the ear portion in the axial direction to the width direction.
8. The pad device of any one of claim 1 to 7,
a dividing wall is arranged on the flexible cylinder and divides the inner area of the flexible cylinder into two filling chambers,
the partition wall partitions the inside of the flexible tube in the up-down direction.
9. The pad device of any one of claim 1 to 7,
an air supply/exhaust port for supplying and exhausting air is provided on the side surface of the flexible tube.
10. A method of manufacturing a fluid cell for manufacturing the fluid cell in the pad device according to claim 3, the method being characterized in that,
the fixing portion, the closing portion, and the ear portion are formed simultaneously by welding lines that vertically cross the flexible tube, and the ear portion is configured by a portion that is located outside the flexible tube in the axial direction with respect to the welding lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110938591.7A CN113633131B (en) | 2016-09-30 | 2017-06-02 | Pad device and method for manufacturing fluid cell |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016192750A JP6498647B2 (en) | 2016-09-30 | 2016-09-30 | Mat equipment |
| JP2016-192750 | 2016-09-30 | ||
| CN201710408730.9A CN107874515B (en) | 2016-09-30 | 2017-06-02 | Pad device and method for manufacturing fluid cell |
| CN202110938591.7A CN113633131B (en) | 2016-09-30 | 2017-06-02 | Pad device and method for manufacturing fluid cell |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710408730.9A Division CN107874515B (en) | 2016-09-30 | 2017-06-02 | Pad device and method for manufacturing fluid cell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113633131A CN113633131A (en) | 2021-11-12 |
| CN113633131B true CN113633131B (en) | 2024-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710408730.9A Active CN107874515B (en) | 2016-09-30 | 2017-06-02 | Pad device and method for manufacturing fluid cell |
| CN202110938591.7A Active CN113633131B (en) | 2016-09-30 | 2017-06-02 | Pad device and method for manufacturing fluid cell |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710408730.9A Active CN107874515B (en) | 2016-09-30 | 2017-06-02 | Pad device and method for manufacturing fluid cell |
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| Country | Link |
|---|---|
| JP (1) | JP6498647B2 (en) |
| CN (2) | CN107874515B (en) |
| TW (1) | TWI710341B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209489777U (en) * | 2018-07-30 | 2019-10-15 | 八乐梦医用床有限公司 | Airbed |
| JP2020022720A (en) * | 2018-07-30 | 2020-02-13 | パラマウントベッド株式会社 | Air mattress |
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Also Published As
| Publication number | Publication date |
|---|---|
| TWI710341B (en) | 2020-11-21 |
| JP6498647B2 (en) | 2019-04-10 |
| CN107874515A (en) | 2018-04-06 |
| CN107874515B (en) | 2021-09-03 |
| JP2018051108A (en) | 2018-04-05 |
| TW201813557A (en) | 2018-04-16 |
| CN113633131A (en) | 2021-11-12 |
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