Anti-deformation air bag assembly, elastic supporting cushion body and air bag assembly production process

Abstract

The invention relates to the technical field of articles of daily use, and particularly discloses an anti-deformation air bag assembly, an elastic supporting cushion body and an air bag assembly production process. The anti-deformation air bag assembly comprises an air bag body and a porous elastic body located in the air bag body; wherein the surface of the porous elastic body is fixedly connected with the inner wall of the air bag body so as to limit the air bag body from expanding and deforming under the action of air pressure. According to the anti-deformation air bag assembly, the elastic supporting cushion body and the air bag assembly production process, the problems that an existing air bag is poor in sleeping comfort, low in supporting stability and short in service life can be effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of daily necessities, and in particular to an anti-deformation airbag component, an elastic support cushion body and an airbag component production process. Background Art

[0002] As an important carrier in the field of ergonomics, the mechanical support performance of mattresses directly affects the health of the human spine and sleep quality. Although traditional spring mattresses have certain elastic characteristics, it is difficult to achieve regional hardness adjustment, and there is a risk of collapse caused by metal fatigue. The airbag support technology developed in recent years has achieved precise control of pressure distribution through an independent air chamber structure, especially the flexible airbag based on TPU (thermoplastic polyurethane) material, which has an adjustable pressure range of 5kPa-50kPa and has become the core component of smart mattresses.

[0003] In order to improve comfort, airbag mattresses are usually equipped with multiple flexible airbags to independently control the support air pressure of different sleeping zones. Ideally, each flexible airbag is a standard rectangular parallelepiped structure, so that the sides of two adjacent flexible airbags fit tightly without any gaps;

[0004] In fact, see Figure 1 After the flexible airbag 1 is inflated, the flexible airbag 1 will expand outward. Specifically, each surface of the flexible airbag 1 will present an arc-shaped structure with the middle part arched outward, and a support gap 2 will be formed between the top surfaces of two adjacent flexible airbags 1. When the user lies down to sleep at the position where the support gap 2 is located, the sleeping comfort is significantly reduced;

[0005] Furthermore, simply relying on air pressure to provide support is insufficient in support strength, and the support surface is prone to being greatly concave, resulting in reduced support stability; taking the top surface of the flexible airbag 1 as an example, before the user lies down to sleep, the top surface of the flexible airbag 1 is convex upward, and when the user lies down to sleep on the flexible airbag 1, the flexible airbag 1 is greatly concave. Before and after the user lies down to sleep, the deformation of the support surface is too large, and the support stability is poor;

[0006] Furthermore, since the flexible airbag 1 will undergo a significant outward expansion deformation, as the number of times the user gets in and out of bed increases, the flexible airbag 1 will suffer obvious fatigue damage due to repeated deformation, resulting in a shorter service life.

[0007] Therefore, it is necessary to improve the existing flexible airbags to solve the problems of poor sleeping comfort, low support stability and short service life of the existing airbags.

[0008] The above information disclosed in this Background section is included only for enhancement of understanding of the background of the present disclosure and therefore it may contain information that does not form the prior art that is currently known to a person of ordinary skill in the art. Summary of the invention

[0009] One object of the present invention is to provide an anti-deformation airbag assembly, an elastic support cushion body and an airbag assembly production process, which can effectively solve the problem of a large support gap between two adjacent airbags, resulting in poor sleeping comfort.

[0010] To achieve the above objectives, in a first aspect, the present invention provides an anti-deformation airbag assembly, comprising an airbag body, and a porous elastic body located inside the airbag body;

[0011] Wherein, the surface of the porous elastic body is fixedly connected to the inner wall of the airbag body to limit the outward expansion and deformation of the airbag body under the action of air pressure.

[0012] Optionally, the porous elastomer is a polyurethane sponge or a TPU gradient foam.

[0013] Optionally, the porous elastic body and the inner wall of the airbag body are high-frequency welding fixed structures.

[0014] Optionally, the inner wall of the airbag body is coated with a polar coating for enhancing the connection strength of high-frequency welding.

[0015] Optionally, the welding points between the porous elastomer and the airbag body are arranged in a hexagonal honeycomb shape.

[0016] Optionally, a containing cavity is provided in the porous elastic body, and a plurality of spring cylinders are arranged in the containing cavity.

[0017] In a second aspect, an elastic support cushion body is provided, comprising a cushion cover, and a plurality of any of the anti-deformation airbag components located inside the cushion cover.

[0018] In a third aspect, a process for producing an airbag assembly is provided, comprising:

[0019] Inserting the porous elastic body into the airbag body;

[0020] The inner wall of the airbag body is fixed to the surface of the porous elastic body to limit the outward expansion and deformation of the airbag body under the action of air pressure.

[0021] Optionally, fixing the inner wall of the airbag body to the surface of the porous elastic body to limit the outward expansion and deformation of the airbag body under the action of air pressure includes:

[0022] The inner wall of the airbag body is fixed to the surface of the porous elastic body by a high-frequency welding process to limit the outward expansion and deformation of the airbag body under the action of air pressure;

[0023] After welding is completed, rapid cooling is performed.

[0024] Optionally, before inserting the porous elastic body into the airbag body, the method further includes:

[0025] A porous elastomer of a predetermined size is obtained through a cutting process;

[0026] The TPU film is pre-coated with a polar coating, and then the TPU film is formed into an airbag body through a vacuum thermoforming process.

[0027] The beneficial effects of the present invention are: providing an anti-deformation airbag assembly, an elastic support pad and an airbag assembly production process, wherein a porous elastic body is arranged inside the airbag body and the two are fixedly connected to achieve the following effects:

[0028] ① Suppressing outward expansion deformation: Through the fixed connection between the porous elastic body and the inner wall of the airbag body, when inflating, the porous elastic body pulls the airbag body from the inside to the inside, thereby effectively limiting the outward expansion deformation of the airbag body, thereby reducing or even eliminating the support gap between two adjacent airbags, thereby solving the problem of poor sleeping comfort;

[0029] ② Improve support stability: The porous elastic body disperses the air pressure load to avoid local stress concentration on the airbag body. Even if the user lies on the airbag body, the surface of the airbag body can remain in a nearly flat state, thereby improving support stability;

[0030] ③ Extend the service life: The fixed connection between the porous elastomer and the inner wall of the airbag body can reduce the deformation amplitude of the airbag body caused by the change of air pressure, thereby reducing the fatigue damage of the repeated deformation of the airbag body and extending the service life of the airbag body.

[0031] Therefore, the airbag assembly production process provided by the present invention can solve the problems of poor sleeping comfort, low supporting stability and short service life of existing airbags. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0033] Figure 1 A schematic diagram of a support gap provided for background technology;

[0034] Figure 2 A schematic diagram of the structure of an anti-deformation airbag assembly provided in an embodiment;

[0035] Figure 3 A cross-sectional schematic diagram of an anti-deformation airbag assembly provided in an embodiment;

[0036] Figure 4 A schematic diagram of the structure of the elastic support pad provided in the embodiment;

[0037] Figure 5 A flowchart of the airbag assembly production process provided in the embodiment;

[0038] Figure 6 Another flowchart of the airbag assembly production process provided in the embodiment.

[0039] In the figure:

[0040] 100. Anti-deformation airbag assembly; 200. Cushion cover;

[0041] 1. Flexible airbag;

[0042] 2. Support gap;

[0043] 3. Airbag body;

[0044] 4. Porous elastomer;

[0045] 5. Trachea;

[0046] 6. Welding point;

[0047] 7. Polar coating. DETAILED DESCRIPTION

[0048] The reference to "embodiment" in the present invention means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present invention. The word "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present invention, as long as there is no technical contradiction or conflict, the various technical features mentioned in each embodiment can be combined in any way to form a corresponding implementable technical solution.

[0049] Unless otherwise defined, the technical terms used herein have the same meanings as those generally understood by those skilled in the art to which the present invention belongs; the use of relevant terms herein is only for describing specific embodiments and is not intended to limit the present invention.

[0050] In the description of the present invention, the term "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships may exist, for example, A and / or B, which means: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this article generally indicates that the objects before and after are in a logical relationship of "or".

[0051] In the present invention, terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship of quantity, priority or sequence between these entities or operations.

[0052] Without further restrictions, in the present invention, the words "include", "comprises", "has" or other similar expressions used in sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those limited elements, but also other elements not explicitly listed, or also include elements inherent to such process, method or product.

[0053] Similar to the understanding in the Examination Guidelines, in the present invention, expressions such as "greater than", "less than", "exceed" and the like are understood to exclude the number itself; expressions such as "above", "below", "within" and the like are understood to include the number itself. In addition, in the description of the embodiments of the present invention, the meaning of "multiple" is more than two (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups", "multiple times", etc., unless otherwise clearly and specifically limited.

[0054] In the description of the embodiments of the present invention, the space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present invention or facilitating the reader's understanding, and do not indicate or imply that the referred device or component must have a specific position, a specific orientation, or be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0055] Unless otherwise expressly specified or limited, in the description of the embodiments of the present invention, the terms such as "install", "connect", "connect", "fix", "set" and the like used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art of the technical field to which the present invention belongs, the specific meanings of the above terms in the embodiments of the present invention can be understood according to the specific circumstances.

[0056] The present invention provides an anti-deformation airbag assembly, an elastic support cushion body and an airbag assembly production process, which are suitable for scenarios such as smart mattresses, medical protective gear, sports equipment, etc. that require high-precision deformation control and adaptive support. It can effectively solve the problem of a large support gap between two adjacent airbags, resulting in poor sleeping comfort.

[0057] As in Examples 1 to 3, various implementation methods of the anti-deformation airbag assembly, elastic support pad body and airbag assembly production process of the present invention are introduced below in conjunction with the accompanying drawings.

[0058] Example 1

[0059] See also Figure 2 and Figure 3 , this embodiment provides an anti-deformation airbag assembly 100, including an airbag body 3, and a porous elastic body 4 located inside the airbag body 3;

[0060] The surface of the porous elastic body 4 is fixedly connected to the inner wall of the airbag body 3 to limit the outward expansion and deformation of the airbag body 3 under the action of air pressure.

[0061] Furthermore, an air pipe 5 is connected to one end surface of the airbag body 3 , and the airbag body 3 is inflated and deflated through the air pipe 5 .

[0062] In the anti-deformation airbag assembly 100 provided in this embodiment, a porous elastic body 4 is disposed inside the airbag body 3, and the two are fixedly connected to achieve the following effects:

[0063] ① Suppressing outward expansion deformation: Through the fixed connection between the porous elastic body 4 and the inner wall of the airbag body 3, when inflated, the porous elastic body 4 pulls the airbag body 3 from the inside, thereby effectively limiting the outward expansion deformation of the airbag body 3, thereby reducing or even eliminating the support gap 2 between two adjacent airbags, thereby solving the problem of poor sleeping comfort;

[0064] ② Improve support stability: The porous elastic body 4 disperses the air pressure load to avoid local stress concentration on the airbag body 3. Even if the user lies and sleeps on the airbag body 3, the surface of the airbag body 3 can remain in a nearly flat state, thereby improving support stability;

[0065] ③ Extend the service life: The fixed connection between the porous elastic body 4 and the inner wall of the airbag body 3 can reduce the deformation amplitude of the airbag body 3 caused by the change of air pressure, thereby reducing the fatigue damage of the airbag body 3 caused by repeated deformation, and extending the service life of the airbag body 3.

[0066] Therefore, the anti-deformation airbag assembly 100 provided by the present invention can solve the problems of poor sleeping comfort, low supporting stability and short service life of the existing airbags.

[0067] In this embodiment, the porous elastic body 4 is a polyurethane sponge or a TPU gradient foam.

[0068] Optionally, the porosity of the polyurethane sponge or TPU gradient foam is 60%-85%. The pore structure can reduce the material density (weight reduction by 35%), while promoting air circulation inside the airbag body 3 to avoid stuffiness.

[0069] Specifically, polyurethane sponge is a common elastic support structure and will not be described in detail.

[0070] TPU gradient foam is a porous thermoplastic polyurethane material prepared by a special foaming process, and its internal pore structure presents a gradient change from the surface to the core (for example, the porosity gradually decreases or the pore size gradually decreases). This material combines the excellent mechanical properties of TPU and the unique advantages of the gradient foaming structure, and is widely used in fields that require differentiated mechanical properties (such as anti-deformation airbags, sports shoe midsoles, medical protective gear, etc.).

[0071] In this embodiment, the gradient pores of the TPU gradient foam are designed as follows:

[0072] ① Surface layer: high porosity (e.g. 80%-85%), large pore size (100-300μm), providing soft cushioning and low density properties.

[0073] ②Middle layer: The porosity gradually decreases (for example, 70%-60%) and the pore size decreases (50-100μm), balancing elasticity and support.

[0074] ③Core layer: low porosity (e.g. 40%-60%) and tiny pore size (<50μm), giving the material high strength and resistance to compression deformation.

[0075] When the TPU gradient foam of the above structure is subjected to pressure, the surface layer deforms first to absorb the impact, and the core layer provides stable support (the energy rebound rate can reach more than 75%).

[0076] Specifically, the high-porosity area of ​​the surface layer fits the curve of the human body, and the core layer provides uniform support to avoid excessive local pressure (the uniformity of pressure distribution is improved by 50%). In this embodiment, the overall density of the TPU gradient foam can be as low as 0.2-0.4 g / cm³ (the density of unfoamed TPU is about 1.2 g / cm³), and the weight reduction can reach 60%-80%.

[0077] In this embodiment, the porous elastic body 4 and the inner wall of the airbag body 3 are high-frequency welding fixed structures. Of course, in some other embodiments, bonding or ultrasonic welding can also be selected to complete the fixation, and the present invention is not limited to this.

[0078] Specifically, high-frequency welding is used to fix the porous elastic body 4 and the inner wall of the airbag, which has the following advantages:

[0079] ① High-strength connection: The welding interface strength reaches 2.3-4.5MPa (the adhesive is only 1.5MPa), avoiding interface peeling under the inflation and deflation cycle.

[0080] ② Environmentally friendly and efficient: There is no adhesive volatilization pollution, and the welding speed is much higher than the brushing bonding speed.

[0081] In this embodiment, the inner wall of the airbag body 3 is coated with a polar coating 7 for enhancing the connection strength of high-frequency welding.

[0082] Optionally, the polar coating 7 is a polyamic acid coating, a polyimide precursor coating, a silane coupling agent coating, a polyacrylate coating, or a polyurethane prepolymer coating.

[0083] The characteristics of polar coating 7 of different materials are as follows:

[0084] 1. Polyimide precursor (best performance but high cost)

[0085] Technical advantages:

[0086] After imidization at 300°C, a polyimide film is formed, and the dielectric constant (ε=6.5-7.2) forms a gradient match with TPU (ε=3-5), which can reduce the reflection loss at the welding interface.

[0087] Limitations:

[0088] The imidization process requires nitrogen protection (oxygen concentration <50ppm), and the equipment investment is relatively large.

[0089] 2. Silane coupling agent (low cost but limited performance)

[0090] Modification scheme:

[0091] Plasma grafting modification (power 300W, Ar / N2 mixed gas) was used to generate -OH groups on the TPU surface, increasing the bonding strength of the silane coupling agent to 2.0MPa.

[0092] Limitations:

[0093] The improvement of dielectric loss is limited (tanδ is only 0.08), and nano-titanium dioxide (5wt%, particle size 50nm) needs to be added to improve high-frequency response.

[0094] 3. Polyacrylate (balanced solution)

[0095] Recipe Optimization:

[0096] The introduction of fluorinated monomers (such as methyl heptafluorobutyl ester, accounting for 15%) can reduce the surface energy of the coating to 18mN / m and improve the melt fluidity (the contact angle is reduced from 75° to 32°).

[0097] Cure Control:

[0098] The UV curing time needs to be precisely controlled within 3-5 seconds (energy density 800-1200mJ / cm²) to prevent photodegradation of the TPU surface.

[0099] 4. Polyurethane prepolymer (chemical homology advantage)

[0100] Chemical bonding mechanism:

[0101] The -NCO group of the prepolymer reacts with the -OH / -NH in the TPU molecular chain to form a urea bond / urethane bond (FTIR detected at 1680cm -1 characteristic peak).

[0102] Process Window:

[0103] The ambient humidity needs to be controlled at 30-50%RH (too high will cause bubble defects), and the curing time is about 15-30 minutes (25℃).

[0104] In this embodiment, the surface density of the welding points 6 is 20 / cm 2 -40 pieces / cm 2 , and the welding points 6 of the porous elastic body 4 and the airbag body 3 are arranged in a hexagonal honeycomb shape. The hexagonal structure can improve the load distribution efficiency, avoid stress concentration, and thus extend the service life. The honeycomb arrangement forms a continuous support network to limit the local outward arch of the surface of the airbag body 3.

[0105] In this embodiment, the porous elastic body 4 is a single material structure. In some other embodiments, in order to improve the elastic support performance of the porous elastic body 4, a spring cylinder can also be implanted inside the porous elastic body 4. That is, a receiving cavity is provided in the porous elastic body 4, and a plurality of spring cylinders are arranged in the receiving cavity. Such a structural design can not only improve the hardness of the elastic support, but also effectively avoid the concave collapse caused by long-term use, greatly extending the service life of the anti-deformation airbag assembly 100.

[0106] To summarize, the anti-deformation airbag assembly 100 provided in this embodiment realizes deformation suppression, support continuity and ultra-long cycle life during airbag inflation by constructing a high-frequency welded honeycomb fixed structure between the porous elastomer 4 and the airbag body 3 and combining the dielectric matching optimization of the polar coating 7. It is suitable for scenarios such as smart mattresses and sports protective gear that have strict requirements on precise deformation control and adaptive support, and solves the problems of support gap 2 and fatigue failure caused by the outward expansion deformation of traditional airbags.

[0107] Example 2

[0108] See also Figure 4 This embodiment provides an elastic support cushion body, including a cushion cover 200, and a plurality of anti-deformation airbag components 100 as described in Example 1 located inside the cushion cover 200. Each of the anti-deformation airbag components 100 is laid flat in the horizontal direction to form a larger support surface.

[0109] The cushion cover 200 may be a cloth cover or a leather cover, which is not limited in the present invention.

[0110] Optionally, the elastic support pad is a mattress, a sofa cushion, or a sofa cushion.

[0111] The elastic support pad provided in this embodiment has the following advantages:

[0112] ① Partition support optimization: The support gap 2 between two adjacent anti-deformation airbag components 100 is small or even non-existent, which reduces the "suspended effect" of traditional mattresses and improves the continuity of waist and hip support.

[0113] ② Anti-interference: The two adjacent anti-deformation airbag components 100 fit closely together, and the displacement is limited, which reduces the associated shaking when turning over and improves the sleep quality.

[0114] On the basis of Example 1, for the features not explained in this example, the explanation in Example 1 is adopted and will not be repeated here.

[0115] Example 3

[0116] This embodiment provides an airbag assembly production process, which is used to produce the anti-deformation airbag assembly described in Embodiment 1, and has the same functions and beneficial effects as Embodiment 1.

[0117] See also Figure 2 , Figure 3 and Figure 5 The airbag assembly production process provided in this embodiment includes the following steps:

[0118] S101: inserting the porous elastic body 4 into the airbag body 3;

[0119] S102: Fixing the inner wall of the airbag body 3 to the surface of the porous elastic body 4 to limit the outward expansion and deformation of the airbag body 3 due to air pressure.

[0120] The airbag assembly production process provided in this embodiment produces an anti-deformation airbag assembly 100, in which a porous elastic body 4 is disposed inside the airbag body 3 and the two are fixedly connected to achieve the following effects:

[0121] ① Suppressing outward expansion deformation: Through the fixed connection between the porous elastic body 4 and the inner wall of the airbag body 3, when inflated, the porous elastic body 4 pulls the airbag body 3 from the inside, thereby effectively limiting the outward expansion deformation of the airbag body 3, thereby reducing or even eliminating the support gap 2 between two adjacent airbags, thereby solving the problem of poor sleeping comfort;

[0122] ② Improve support stability: The porous elastic body 4 disperses the air pressure load to avoid local stress concentration on the airbag body 3. Even if the user lies and sleeps on the airbag body 3, the surface of the airbag body 3 can remain in a nearly flat state, thereby improving support stability;

[0123] ③ Extend the service life: The fixed connection between the porous elastic body 4 and the inner wall of the airbag body 3 can reduce the deformation amplitude of the airbag body 3 caused by the change of air pressure, thereby reducing the fatigue damage of the airbag body 3 caused by repeated deformation, and extending the service life of the airbag body 3.

[0124] Therefore, the airbag assembly production process provided by the present invention can solve the problems of poor sleeping comfort, low supporting stability and short service life of existing airbags.

[0125] In this embodiment, step S102 includes:

[0126] S1021: fixing the inner wall of the airbag body 3 to the surface of the porous elastic body 4 through a high-frequency welding process, so as to limit the outward expansion deformation of the airbag body 3 under the action of air pressure;

[0127] S1022: After the welding is completed, a rapid cooling process is performed.

[0128] Common rapid cooling treatment measures include blowing cooling and / or placing the anti-deformation airbag assembly 100 in a low-temperature chamber.

[0129] Generally, the airbag body 3 is made of TPU material. Rapid cooling after high-frequency welding can effectively suppress the relaxation of TPU molecular chains, thereby improving the connection strength of high-frequency welding.

[0130] Optionally, before inserting the porous elastic body 4 into the airbag body 3, the method further includes:

[0131] A porous elastic body 4 of a predetermined size is obtained by a cutting process;

[0132] The polar coating 7 is pre-coated on the TPU film, and then the TPU film is formed into the airbag body 3 through a vacuum thermoforming process.

[0133] That is, see Figure 6 , the airbag assembly production process includes the following steps:

[0134] S201: obtaining a porous elastic body 4 of a predetermined size through a cutting process;

[0135] Optionally, the airbag body 3 is a double-layer TPU film heat-synthesized structure (thickness 0.5mm-1.2mm). The predetermined size is the mold cavity size of the mold for producing the airbag body 3. The tolerance is controlled within ±0.1mm.

[0136] S202: pre-coating a polar coating 7 on the TPU film, and then forming the TPU film into an airbag body 3 through a vacuum thermoforming process;

[0137] S203: inserting the porous elastic body 4 into the airbag body 3;

[0138] S204: Fixing the inner wall of the airbag body 3 to the surface of the porous elastic body 4 to limit the outward expansion and deformation of the airbag body 3 due to the air pressure.

[0139] Furthermore, after the inner wall of the airbag body 3 is fixed to the surface of the porous elastic body 4 to limit the outward expansion and deformation of the airbag body 3 under the action of air pressure, the method further includes:

[0140] S205: Perform air tightness testing.

[0141] Specifically, inflate to 1.2 times the working pressure (60kPa), maintain the pressure for 5 minutes, and the leakage is required to be less than 0.5%, which is qualified.

[0142] To summarize, the airbag assembly production process provided in this embodiment and the resulting anti-deformation airbag assembly 100 achieve deformation suppression during airbag inflation, support continuity and ultra-long cycle life by constructing a high-frequency fused fixed structure between the porous elastomer 4 and the airbag body 3 and combining the dielectric matching optimization of the polar coating 7. The airbag is suitable for scenarios such as smart mattresses and sports protective gear that have strict requirements on precise deformation control and adaptive support, and solves the problems of support gap 2 and fatigue failure caused by the outward expansion deformation of traditional airbags.

[0143] On the basis of Example 1, for the features not explained in this example, the explanation in Example 1 is adopted and will not be repeated here.

[0144] Finally, it should be noted that although the above embodiments have been described in the specification and drawings of this application, this does not limit the scope of patent protection of this application. All technical solutions generated by replacing or modifying equivalent structures or equivalent processes based on the essential concept of this application using the contents recorded in the specification and drawings of this application, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are included in the scope of patent protection of this application.

Claims

1. An anti-deformation airbag assembly, characterized in that: It comprises an airbag body (3) and a porous elastic body (4) located inside the airbag body (3); The surface of the porous elastic body (4) is fixedly connected to the inner wall of the airbag body (3) so as to limit the outward expansion and deformation of the airbag body (3) under the action of air pressure.

2. The anti-deformation airbag assembly according to claim 1, characterized in that: The porous elastic body (4) is a polyurethane sponge or a TPU gradient foam.

3. The anti-deformation airbag assembly according to claim 1, characterized in that: The porous elastic body (4) and the inner wall of the airbag body (3) are high-frequency welding fixed structures.

4. The anti-deformation airbag assembly according to claim 3, characterized in that: The inner wall of the airbag body (3) is coated with a polar coating (7) for enhancing the connection strength of high-frequency welding.

5. The anti-deformation airbag assembly according to claim 3, characterized in that: The welding points (6) between the porous elastic body (4) and the airbag body (3) are arranged in a hexagonal honeycomb shape.

6. The anti-deformation airbag assembly according to claim 1, characterized in that: The porous elastic body (4) is provided with a receiving cavity, and a plurality of spring cylinders are arranged in the receiving cavity.

7. An elastic support pad, characterized in that: It comprises a cushion cover (200), and a plurality of anti-deformation airbag components (100) according to any one of claims 1 to 6, which are located inside the cushion cover (200).

8. A process for producing an airbag assembly, characterized in that: include: Inserting the porous elastic body (4) into the airbag body (3); The inner wall of the airbag body (3) is fixed to the surface of the porous elastic body (4) to limit the outward expansion and deformation of the airbag body (3) under the action of air pressure.

9. The airbag assembly production process according to claim 8, characterized in that: The method of fixing the inner wall of the airbag body (3) to the surface of the porous elastic body (4) to limit the outward expansion deformation of the airbag body (3) under the action of air pressure comprises: The inner wall of the airbag body (3) is fixed to the surface of the porous elastic body (4) by a high-frequency welding process, so as to limit the outward expansion deformation of the airbag body (3) under the action of air pressure; After welding is completed, rapid cooling is performed.

10. The airbag assembly production process according to claim 9, characterized in that: Before inserting the porous elastic body (4) into the airbag body (3), the method further comprises: A porous elastomer (4) of a predetermined size is obtained by a cutting process; A polar coating (7) is pre-coated on the TPU film, and then the TPU film is formed into an airbag body (3) through a vacuum thermoforming process.

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