Air bag, massage system and seat thereof

Abstract

The embodiment of the utility model relates to the technical field of pneumatic massage equipment, and discloses an air bag, a massage system and a seat of the massage system. The air bag comprises a first air bag layer and a second air bag layer, the first air bag layer comprises two first sheets, the peripheries of the two first sheets are fixedly connected with each other, and a first cavity is formed in the first air bag layer; the second air bag layer comprises two second sheets, the peripheries of the two second sheets are fixedly connected with each other, a second cavity is formed in the second sheets, one first sheet in the first air bag layer is fixedly connected with one second sheet in the second air bag layer, a connecting part is formed, and the first cavity is communicated with the second cavity through the connecting part; the silencing piece is located in the first cavity or the second cavity and covers the connecting part. By means of the additionally-arranged silencing piece, friction and adhesion between the annular protrusion and the adjacent surface can be reduced, a buffer layer is formed, and therefore abnormal sound generated when the air bag is inflated is effectively reduced.

Description

Technical Field

[0001] This application relates to the technical field of pneumatic massage devices, and particularly to an airbag, a massage system, and a seat thereof. Background Art

[0002] In the design of modern means of transportation, such as cars and ships, the comfort and health of passengers have become important considerations. Due to the discomfort and fatigue caused by long-term driving and sitting, more and more manufacturers have begun to integrate various massage functions into seats to improve the user's riding experience.

[0003] Typically, the integration of massage functions in seats relies on an airbag system. The control device installed in the means of transportation controls the inflation and deflation of the airbag system to achieve massage of human body parts.

[0004] The core of the airbag system is an airbag made of flexible material. It can expand or contract in a short time under the action of an inflation device through inflation / deflation, changing the size of the space it occupies to squeeze the back or buttocks of the human body to achieve a massage effect.

[0005] However, during the rapid inflation process of the existing airbags, under the action of air pressure changes, they often emit unexpected sounds, which affects the user experience. Summary of the Utility Model

[0006] This application provides an airbag, a massage system, and a seat thereof, aiming to solve at least some of the defects existing in traditional airbags.

[0007] In a first aspect, an embodiment of this application provides an airbag. The airbag includes:

[0008] A first airbag layer, including two first sheets, the peripheries of the two first sheets are fixedly connected to each other and form a first chamber inside;

[0009] A second airbag layer, including two second sheets, the peripheries of the two second sheets are fixedly connected to each other and form a second chamber inside. One of the first sheets in the first airbag layer is fixedly connected to one of the second sheets in the second airbag layer to form a connection part, and the first chamber and the second chamber are communicated through the connection part;

[0010] A sound-absorbing sheet, located in the first chamber or the second chamber and covering the connection part.

[0011] Optionally, the airbag further includes: a massage part; the massage part is fixedly connected to the other first sheet in the first airbag layer.

[0012] Optionally, the massage part includes: an airbag, which communicates with the first chamber; a filler, which is located inside the airbag.

[0013] Optionally, at least a part of the surface of the sound insulation sheet facing away from the connecting part is a rough surface.

[0014] Optionally, one of the first sheets in the first airbag layer and one of the second sheets in the second airbag layer have an annular protrusion at the seam forming the connecting part, and the annular protrusion is located in the first chamber or the second chamber.

[0015] Optionally, the sound insulation sheet forms a covering area on at least a part of the inner surface of the first airbag layer or the second airbag layer;

[0016] Wherein, the annular protrusion is located in the covering area, and the covering area extends from the position where the annular protrusion is located in a direction away from the annular protrusion.

[0017] Optionally, the covering area is annular, and the width of the annular belt of the covering area is greater than or equal to 5 mm.

[0018] Optionally, the airbag further includes: a connecting pipe; the connecting pipe extends outward from the second airbag layer and communicates with the second chamber.

[0019] In a second aspect, an embodiment of the present application provides a massage system. The massage system includes: the airbag as described above and a gas output device; wherein, the gas output device communicates with the internal space of the airbag and is used to change the gas pressure in the internal space.

[0020] In a third aspect, an embodiment of the present application further provides a seat. The seat includes: a seat body and the massage system as described above.

[0021] One of the advantageous aspects of the airbag provided by the embodiment of the present application is that: by providing a sound insulation sheet on the connecting part, direct contact between the annular protrusion and the inner surface of the first airbag layer or the second airbag layer can be avoided, thereby effectively reducing the abnormal noise caused by the vacuum effect and the sudden release of friction when the airbag is inflated. Description of the Drawings

[0022] One or more embodiments are exemplarily illustrated by corresponding drawings. These exemplary illustrations do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements, unless otherwise stated, and the drawings in the figures do not constitute a proportional limitation.

[0023] Figure 1 is a schematic diagram of a typical airbag structure.

[0024] Figure 2 It is a schematic structural diagram of an airbag provided by an embodiment of the present application.

[0025] Figure 3 It is a cross-sectional view of the airbag provided by an embodiment of the present application in one direction.

[0026] Figure 4 It is a cross-sectional view of the airbag provided by an embodiment of the present application in another direction, showing the covering area of the sound-absorbing sheet.

[0027] Figure 5 It is a schematic diagram of the massage part provided by an embodiment of the present application.

[0028] Reference numerals:

[0029] 100, airbag structure; 1, airbag unit; 2, welding ring; 2001, adjacent surfaces of the airbag unit;

[0030] 200, airbag; 10, first airbag layer; 11, first sheet; 101, first chamber; 20, second airbag layer; 21, second sheet; 201, second chamber; 30, massage part; 31, airbag; 32, filler; 40, sound-absorbing sheet; 50, connecting part; 501, annular protrusion; 5011, annular inner edge; 5012, annular outer edge; 60, adjacent surface; 70, connecting pipe. Detailed implementation manners

[0031] The present application will be described in detail below with reference to specific embodiments. It should be emphasized that the following description is merely exemplary and is not intended to limit the scope and application of the present application.

[0032] It should be noted that, unless otherwise clearly specified or limited, the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. used in this specification is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application. The terms "mounted", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features; thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features; the meaning of "plurality" is two or more; "and / or" includes any and all combinations of one or more of the related listed items. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0033] The term "physical contact" means that two components are in direct contact without any other medium separating them and can transmit force or vibration.

[0034] The term "tendency to move" means that a structural component has a tendency to move spontaneously, and when this tendency is restricted by a constraint condition (such as another component in contact with each other or a reverse acting force), it is converted into a force against the constraint condition.

[0035] Figure 1 It is a schematic diagram of a typical airbag structure.

[0036] As Figure 1 shown, a typical airbag structure 100 can usually be composed of multiple airbag units 1. These airbag units 1 made of flexible materials can be connected in series through a hot melt welding process to jointly form a complete airbag structure 100.

[0037] The applicant found during the implementation of the present application that: during the hot melt welding process, some molten materials are very likely to overflow from the seam between the two airbag units 1 and form a welding ring 2 in a shape similar to a crater after cooling.

[0038] When the airbag unit 1 is not inflated, such a welding ring 2 will be in close contact with the adjacent surface 2001 of the airbag unit (such as another part of the airbag unit 1 or other materials inside the airbag unit 1) and form a sealed area. When the airbag unit 1 is inflated, the air in this sealed area will be quickly pumped out or pressed in, and a sound similar to that of a suction cup being pulled apart will be generated due to the rupture of the seal.

[0039] Especially when the airbag unit 1 is made of a flexible material such as thermoplastic polyurethane, a relatively large frictional force and adhesion force will also be generated between the welding ring 2 and the adjacent surface 2001 of the airbag unit in close contact. When the airbag unit 1 is inflated and causes the adjacent surface 2001 of the airbag unit and the welding ring 2 to separate from each other, the sudden release of the frictional force and adhesion force between the two, accompanied by elastic vibration and mutual impact, will cause a more serious abnormal noise.

[0040] Figure 2 It is a schematic structural diagram of the airbag provided by the embodiment of the present application. Figure 3 It is a cross-sectional view of the airbag provided by the embodiment of the present application in one direction. Figure 4 It is a cross-sectional view of the airbag provided by the embodiment of the present application in another direction, showing the covering area of the sound-absorbing film.

[0041] Combined Figures 2 - 4 It can be seen that the embodiment of the present application provides an idea of effectively reducing the abnormal noise generated when the annular protrusion 501 and the adjacent surface 60 of the airbag 200 quickly separate from each other by arranging the sound-absorbing sheet 40 between the annular protrusion 501 and the adjacent surface 60 of the airbag 200.

[0042] Specifically, on the one hand, the sound-absorbing sheet 40 located between the two can reduce the friction and adhesion between the annular protrusion 501 and the adjacent surface 60, thereby reducing the generation of abnormal noise. On the other hand, the sound-absorbing sheet 40 can form a buffer layer inside the airbag 200, so that the air pressure change does not directly act on the contact point between the annular protrusion 501 and the adjacent surface 60, reducing the occurrence of the vacuum blasting effect.

[0043] In addition, when the sound-absorbing sheet 40 has elasticity, it can itself absorb and weaken the propagation of sound waves, and can further reduce the abnormal noise transmitted out.

[0044] As Figure 2 shown, the airbag is configured with the above-mentioned film layer structure, which can effectively reduce and lower the abnormal noise generated during the inflation process of the airbag.

[0045] The airbag 200 includes: a first airbag layer 10, a second airbag layer 20, and a sound-absorbing sheet 40.

[0046] Among them, the first airbag layer 10 includes two first sheets 11, and the peripheries of the two first sheets 11 are fixedly connected to each other and form a first chamber 101 inside.

[0047] In addition, the second airbag layer 20 includes two second sheets 21, and the peripheries of the two second sheets 21 are fixedly connected to each other and form a second chamber 201 inside. One of the first sheets 11 in the first airbag layer 10 is fixedly connected to one of the second sheets 21 in the second airbag layer 20 to form a connecting portion 50. The first chamber 101 and the second chamber 201 communicate with each other through the above-mentioned connecting portion 50;

[0048] In addition, the sound-absorbing sheet 40 is located in the first chamber 101 or the second chamber 201 and covers the above-mentioned connecting portion 50.

[0049] It can be understood that both the first sheet 11 and the second sheet 21 can be made of any suitable material (for example, polyurethane, thermoplastic polyurethane), have a suitable thickness and strength, and can withstand a preset target pressure and stress.

[0050] It should be noted that the first sheet 11 and the second sheet 21 can be physically contacted through processes such as hot melting to jointly form the continuous first airbag layer 10 and the second airbag layer 20.

[0051] Specifically, the first sheet 11 and the second sheet 21 can adopt a Figure 2 series connection method as shown, and adjacent first sheets 11 and second sheets 21 are joined to each other to form a continuous structural entity. Figure 2 exemplarily shows that the edges of two first sheets 11 are joined to form a first airbag layer 10, and also shows that the edges of two second sheets 21 are joined to form a second airbag layer 20, and the central regions between the first airbag layer 10 and the second airbag layer 20 are also joined to form a through-channel form. However, those skilled in the art can understand that the specific implementation form of the first sheet 11 and the second sheet 21 combined to form the airbag 200 can also be adjusted according to actual needs, and is not limited to Figure 2 shown.

[0052] In this application, for the sake of simplicity of description, the term "first airbag layer 10" is used to represent the structural entity jointly composed of two first sheets 11; and the term "second airbag layer 20" is used to represent the structural entity jointly composed of two second sheets 21. The term "connecting portion 50" is used to represent the connection structure that establishes physical contact between the first airbag layer 10 and the second airbag layer (for example, the above-mentioned annular protrusion 501).

[0053] Such as Figure 3As shown, the above-mentioned second chamber 201 can have the ability to independently change the air pressure relative to the external space located outside the second airbag layer 20. Similarly, the first chamber 101 can also have the ability to independently change the air pressure relative to the external space located outside the first airbag layer 10. For example, by inflating the second chamber 201 and the first chamber 101, the air pressure in the second chamber 201 and the first chamber 101 can be made significantly greater than that of the external space.

[0054] The sound-absorbing sheet 40 is a structure located in the first chamber 101 or the second chamber 201, having a substantially uniform thickness and extending to cover a specific size range. The sound-absorbing sheet 40 can have appropriate flexibility so that it can bend following the deformation of the first sheet 11 or the second sheet 21. Specifically, the sound-absorbing sheet can be made of any suitable type of material according to the actual needs, as long as it can meet the actual use requirements, such as thermoplastic polyurethane.

[0055] Preferably, in order to further avoid the occurrence of the vacuum effect and reduce the friction and adhesion force generated by the contact of smooth surfaces, at least a part of the surface of the sound-absorbing sheet facing away from the connecting portion can be a rough surface.

[0056] In this embodiment, the "rough surface" refers to a non-smooth surface with unevenness and certain texture formed after one or more mechanical / chemical treatments on the surface of the sound-absorbing sheet. Specifically, the above-mentioned mechanical / chemical treatments can include: mechanical sanding, chemical etching or spraying abrasive particles.

[0057] Specifically, please continue to refer to Figure 2 , a first sheet 11 in the first airbag layer 10 and a second sheet 21 in the second airbag layer 20 have an annular protrusion 501 at the joint where the connecting portion 50 is formed; the annular protrusion 501 is located in the first chamber 101 or the second chamber 201.

[0058] Among them, a channel connecting the first airbag layer 10 and the second airbag layer 20 is formed inside the ring of the annular protrusion 501. The annular protrusion 501 can be formed by the cooling of the overflowing molten material. In a typical airbag structure as shown in Figure 1 , it can also be called the "welding ring 2".

[0059] Correspondingly, the covering area formed by the sound-absorbing sheet 40 on at least a part of the inner surface of the first airbag layer 10 or the second airbag layer 20 is an approximately annular area starting from the position where the annular protrusion 501 is located and extending a certain distance away from the annular protrusion 501.

[0060] Preferably, to ensure sufficient coverage of the annular protrusion 501, the width of the annular belt of the annular coverage area formed by the sound-absorbing sheet 40 is greater than or equal to 5 mm. As Figure 4 shown, this "width of the annular belt" refers to the radial distance from the inner edge 5011 of the annulus to the outer edge 5012 of the annulus.

[0061] In this embodiment, please continue to refer to Figure 4 , the area covered by the sound-absorbing sheet 40 at least includes the connecting portion 50. In other words, the sound-absorbing sheet 40 covers the connecting portion 50, so that when the airbag 200 is in the non-inflated state, the connecting portion 50 does not directly contact other parts of the adjacent first sheet 11 and second sheet 21.

[0062] By providing the sound-absorbing sheet 40 on the connecting portion 50, direct contact between the connecting portion 50 and the inner surface of the first airbag layer 10 or the second airbag layer 20 can be avoided, thereby effectively reducing the abnormal noise caused by the vacuum effect and the sudden release of friction when the airbag 200 is inflated.

[0063] In some embodiments, the airbag 200 may further include: a massage portion 30. The massage portion 30 is fixedly connected to another first sheet 11 in the first airbag layer 10 and is a component that operates under the drive of the first airbag layer 10.

[0064] During actual use, as the pressure in the second chamber 201 rises due to inflation, the first airbag layer 10 and the second airbag layer 20 can cause the massage portion 30 to tend to move. Based on this tendency to move, the massage portion 30 can exert a force on the body part of the user in contact with it (for example, the back, waist or leg, etc.), thereby achieving a massage effect.

[0065] Specifically, as Figure 5 shown, the massage portion 30 may include: an airbag 31 and a filler 32.

[0066] Among them, the airbag 31 is a structure that can contract / expand. It can be communicated with the first chamber 101 and can expand or contract following the pressure change of the second chamber 201 or the first chamber 101.

[0067] Specifically, to adapt to the massage needs of different parts, the airbag 31 can be designed into various shapes, such as circular, oval, and strip-shaped, and is not limited to Figure 5 the circular shape shown.

[0068] The filler 32 is a solid substance filled inside the airbag to form a suitable massage touch and strength. Specifically, the filler 32 can be selected to use any suitable type of object according to actual needs.

[0069] For example, the filler 32 can be selected as a liquid that is not easily compressed. The filler 32 can also be granular material (such as rubber particles) to provide a touch closer to finger pressing, or the filler 32 can be foam material to provide a softer and gentler massage effect.

[0070] During actual use, various different massage effects can also be achieved through the control and layout settings of the massage part. For example, by controlling the rhythm and frequency of inflation and deflation, the airbag can achieve various massage techniques such as kneading, pressing, and patting. Or by adjusting the inflation volume of the airbag, a deep massage effect can be achieved, making it suitable for parts that require stronger pressure, such as the back or thighs.

[0071] Preferably, multiple airbags can also be provided, distributed in different massage areas, and targeted zonal massage can be achieved by independently controlling each small airbag.

[0072] In some embodiments, for the convenience of performing the inflation and deflation operations of the airbag, please continue to refer to Figure 2 , the airbag 200 further includes a connecting pipe 70. Wherein, the connecting pipe 70 is a pipe communicating with the second chamber 201. One end of it is connected to the second airbag layer 20, and the other end extends outward.

[0073] During actual use, the end of the connecting pipe 70 can be connected to the corresponding inflation and deflation control device. The second chamber 201 is inflated through the connecting pipe 70 to make it expand, or the gas in the second chamber 201 is released through the connecting pipe 70 to make it contract.

[0074] Based on the airbag system provided in the above embodiments, the embodiments of the present application further provide a massage system. The massage system includes: the airbag as described above and a gas output device.

[0075] Wherein, the gas output device can be of any suitable type, a device for controlling gas input and output. It is communicated with the internal space of the airbag, and by inputting gas or discharging gas, the gas pressure in the internal space is changed, so as to achieve the required massage effect.

[0076] Based on the massage system provided in the above embodiments, the embodiments of the present application further provide a seat. The seat includes: a seat body and the massage system as described above. By arranging a suitable massage system, rich massage functions can be added to the seat, improving the user experience.

[0077] It should be noted that the seat with massage function can be applied to any suitable type of use scenario, including but not limited to office seats, car seats, airplane seats or ship seats.

[0078] The above content is a further detailed description of the present application in combination with specific / preferred embodiments, and it cannot be determined that the specific implementation of the present application is limited to these descriptions. For those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the present application.

Claims

1. An air bag, characterized in that: include: The first air bag layer comprises two first sheets, the peripheries of the two first sheets are fixedly connected to each other and a first chamber is formed inside; The second airbag layer comprises two second sheets, the peripheries of the two second sheets are fixedly connected to each other and a second chamber is formed inside, one of the first sheets in the first airbag layer is fixedly connected to one of the second sheets in the second airbag layer and a connecting portion is formed, and the first chamber is connected to the second chamber through the connecting portion; A sound-absorbing sheet is located in the first chamber or the second chamber and covers the connecting portion.

2. The airbag according to claim 1, characterized in that: Also includes: The massage part is fixedly connected to another first sheet in the first air bag layer.

3. The airbag according to claim 2, characterized in that: The massage part comprises: an airbag, the airbag being in communication with the first chamber; A filler is located inside the airbag.

4. The airbag according to claim 1, characterized in that: At least a portion of the surface of the sound-absorbing sheet facing away from the connecting portion is a rough surface.

5. The airbag according to claim 1, characterized in that: One of the first sheets in the first airbag layer and one of the second sheets in the second airbag layer have an annular protrusion at the seam forming the connecting portion; the annular protrusion is located in the first cavity or the second cavity.

6. The airbag according to claim 5, characterized in that: The sound-absorbing sheet forms a covering area on at least a portion of the inner surface of the first airbag layer or the second airbag layer; The annular protrusion is located in the covering area, and the covering area extends from the position where the annular protrusion is located in a direction away from the annular protrusion.

7. The airbag according to claim 6, characterized in that: The coverage area is annular, and the width of the annular zone of the coverage area is greater than or equal to 5 mm.

8. The airbag according to claim 1, characterized in that: Also includes: A connecting pipe extends outward from the second air bag layer and communicates with the second chamber.

9. A massage system, characterized in that: include: The air bag and the gas output device according to any one of claims 1 to 8; Wherein, the gas output device is communicated with the internal space of the air bag and is used to change the gas pressure of the internal space.

10. A seat, characterized in that: include: A seat body and a massage system as claimed in claim 9.

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