Porous airtight sponge spring and nonmetal spring cushion

Abstract

The utility model discloses a porous airtight sponge spring, which relates to the technical field of air bags and comprises a breathable elastic sponge core body, an airtight elastic bag body and an air nozzle, the airflow channel penetrates through the breathable elastic sponge core body; the airtight elastic bag body is arranged on the peripheral surface of the breathable elastic sponge core body to form a closed space, and the inner surface of the airtight elastic bag body is fixedly connected with the peripheral surface of the breathable elastic sponge core body; and the air tap penetrates through the airtight elastic bag body so as to communicate the breathable elastic sponge core body with external air. By means of the arrangement, the stress uniformity of the interior of the air bag and the airtight elastic bag body can be improved, meanwhile, the airtight sponge spring body is provided with the airflow channel used for vertical or horizontal air flowing in the non-metal spring cushion with the airtight sponge spring body as a supporting structure, and good air permeability is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of air bags, in particular to a porous airtight sponge spring and a non-metallic spring pad. Background Art

[0002] Due to its variable volume, the air bag is convenient for storage and carrying, and is applied in many fields, such as a mattress air bag, a seat air bag or a sofa, etc.

[0003] In order to maintain a certain shape, some pulling lines are arranged inside the existing air bag to prevent the inflated air bag from forming a spherical or cylindrical shape. However, in actual application, even if there are pulling lines inside the air bag, the air bag will still form an arc surface on the surface after inflation. At the same time, when the volume of the air bag is large, it will affect the gas flow inside the pad, which affects the user experience.

[0004] Therefore, how to improve the uniformity of the force on the inside of the air bag and the airtight elastic capsule body, and at the same time improve the air permeability of the airtight sponge spring, is a technical problem that those skilled in the art need to solve at present. Summary of the Utility Model

[0005] An object of the utility model is to provide a porous airtight sponge spring, which can not only improve the uniformity of the force on the inside of the air bag and the airtight elastic capsule body, but also set an air flow channel for the gas flow inside the non-metallic spring pad supported by it as a support structure in the porous airtight sponge spring to achieve good air permeability. Another object is to provide a non-metallic spring pad including the above-mentioned porous airtight sponge spring. After the porous airtight sponge spring in the non-metallic spring pad is connected to the air flow control system, the height, softness and hardness of a single porous airtight sponge spring or the height, softness and hardness of the entire non-metallic spring pad can be adjusted.

[0006] To achieve the above object, the utility model provides the following technical solutions:

[0007] A porous airtight sponge spring, comprising:

[0008] A breathable elastic sponge core;

[0009] An air flow channel, which is arranged through the breathable elastic sponge core;

[0010] An airtight elastic capsule body, which is arranged on the peripheral surface of the breathable elastic sponge core to form a closed space, and the inner surface of the airtight elastic capsule body is fixedly connected to the peripheral surface of the breathable elastic sponge core;

[0011] An air nozzle, which penetrates through the airtight elastic capsule body to communicate the breathable elastic sponge core with the outside air.

[0012] Preferably, a plurality of air flow channels are arranged on the breathable elastic sponge core.

[0013] Preferably, the material of the airtight elastic bladder is specifically thermoplastic polyurethane elastomer, and the inner surface of the airtight elastic bladder is bonded to the peripheral surface of the breathable elastic sponge core by an adhesive.

[0014] Preferably, the airtight elastic bladder is formed on the surface of the breathable elastic sponge core and the inner wall surface of the air flow channel by a spraying method.

[0015] Preferably, a layer of mesh cloth is provided on the outer surface of the breathable elastic sponge core, the air flow channel penetrates through the mesh cloth, and the airtight elastic bladder is formed on the surfaces of the breathable elastic sponge core, the mesh cloth and the inner wall surface of the air flow channel by a spraying method.

[0016] Preferably, the airtight elastic bladder is formed by splicing a plurality of elastic sheets;

[0017] A plurality of elastic sheets are bonded to the outer surface of the breathable elastic sponge core and the inner wall surface of the air flow channel, or a plurality of elastic sheets are formed into a three-dimensional airtight elastic bladder by thermoforming and are bonded to the outer surface of the breathable elastic sponge core and the inner wall surface of the air flow channel.

[0018] Preferably, a plurality of air nozzles are provided on the side wall of the airtight elastic bladder.

[0019] Preferably, the air nozzle is an air inlet and outlet nozzle, or one or more of the air nozzles are air inlet nozzles and the remaining air nozzles are air outlet nozzles, or one or more of the air nozzles are air outlet nozzles and the remaining air nozzles are air inlet nozzles.

[0020] A non-metallic spring pad includes the porous airtight sponge spring described above, and further includes an outer sleeve covering the outside of the porous airtight sponge spring, and the outer surface of the porous airtight sponge spring is bonded to the inner surface of the outer sleeve.

[0021] Preferably, a plurality of porous airtight sponge springs are provided in the outer sleeve, and the plurality of porous airtight sponge springs are laid flat in the outer sleeve in a horizontal plane or stacked in the outer sleeve in a vertical direction; the porous airtight sponge spring is connected to an air flow control system to control the softness, hardness and height adjustment of the airtight sponge spring.

[0022] Compared with the above background art, a porous airtight sponge spring provided by the present invention includes: a breathable elastic sponge core, an airtight elastic bladder and an air nozzle; an air flow channel is penetrated through the breathable elastic sponge core; the airtight elastic bladder is arranged on the peripheral surface of the breathable elastic sponge core to form a closed space, and the inner surface of the airtight elastic bladder is fixedly connected to the peripheral surface of the breathable elastic sponge core; the air nozzle penetrates through the airtight elastic bladder to communicate the breathable elastic sponge core with the outside air.

[0023] In use, gas can be filled into the porous airtight sponge spring through the air nozzle. Since the airtight elastic capsule is wrapped around the outer surface of the breathable elastic sponge core and the inner wall of the air flow channel, there are countless points on the surface of the breathable elastic sponge core connected to the airtight elastic capsule. When the breathable elastic sponge core is in an inflated state, these points have a certain pulling effect on the airtight elastic cavity, making the force inside the airtight sponge spring and the airtight elastic capsule uniform, ensuring the flatness of the surface of the porous airtight sponge spring. At the same time, due to the function of the air flow channel, the air flow outside the porous airtight sponge spring flows smoothly, which also ensures its air permeability. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the provided drawings.

[0025] Figure 1 The top view of the porous airtight sponge spring provided by the embodiment of the present invention;

[0026] Figure 2 is Figure 1 a cross-sectional view of.

[0027] Wherein:

[0028] 100 - breathable elastic sponge core, 200 - air flow channel, 300 - airtight elastic capsule, 400 - air nozzle, 500 - adhesive. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] In order to enable those skilled in the art in this technical field to better understand the solution of the present invention, the following will further describe the present invention in detail with reference to the drawings and specific embodiments.

[0031] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the indicated position or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present utility model.

[0032] An object of the present utility model is to provide a porous airtight sponge spring, which can not only improve the uniformity of the force on the inside of the airbag and the airtight elastic capsule body, but also provide an air flow channel for the internal gas flow of the non-metallic spring pad supported by it as a support structure in the porous airtight sponge spring to achieve good air permeability; wherein, the air flow channel inside the non-metallic spring pad can be in the horizontal direction, or in the vertical direction, or the air flow channel in the horizontal direction is interconnected with the air flow channel in the vertical direction, or the air flow channels are obliquely arranged and interconnected.

[0033] Another object of the present utility model is to provide a non-metallic spring pad including the above-mentioned porous airtight sponge spring. After the porous airtight sponge spring in the non-metallic spring pad is connected to the air flow control system, the height, hardness and softness of a single porous airtight sponge spring or the height, software of the entire non-metallic spring pad can be adjusted.

[0034] To achieve the above object, the present utility model provides the following technical solutions:

[0035] Please refer to Figure 1 and Figure 2 , this embodiment provides a porous airtight sponge spring, including: a breathable elastic sponge core 100, an airtight elastic capsule 300 and a nozzle 400; an air flow channel 200 is disposed through the breathable elastic sponge core 100; the airtight elastic capsule 300 is disposed on the peripheral surface of the breathable elastic sponge core 100 to form a closed space, the inner surface of the airtight elastic capsule 300 is fixedly connected to the peripheral surface of the breathable elastic sponge core 100, and the inner surface of the airtight elastic capsule 300 is fixedly connected to a part or all of the outer surface of the inner wall of the air flow channel 200, and the specific connection method is adjusted according to actual needs; the nozzle 400 penetrates through the airtight elastic capsule 300 to communicate the breathable elastic sponge core 100 with the outside air.

[0036] During use, gas can be filled into the porous airtight sponge spring through the air nozzle 400. Since the airtight elastic capsule 300 wraps around the outer surface of the breathable elastic sponge core 100 and the inner wall of the air flow channel 200, there are countless points on the surface of the breathable elastic sponge core 100 connected to the airtight elastic capsule 300. When the breathable elastic sponge core 100 is in the inflated state, the breathable elastic sponge core 100 has a certain pulling effect on the airtight elastic cavity, making the force inside the airtight sponge spring and the airtight elastic capsule 300 uniform. This can ensure that the surface of the porous airtight sponge spring is flat. At the same time, due to the function of the air flow channel 200, the external air flow of the porous airtight sponge spring is smooth, which also ensures its air permeability.

[0037] Specifically, a layer of airtight elastic material is evenly adhered to the outer surface of the breathable elastic sponge core 100, that is, an airtight elastic capsule 300 is arranged on the outer surface of the breathable elastic sponge core 100, so that a sealed airtight sponge spring is formed as a whole. One or more air inlet or outlet holes are opened on the side wall of the airtight sponge spring. For the airtight sponge spring with this structure, there are countless points on the surface of the breathable elastic sponge core 100 combined with the airtight elastic capsule 300. When the airtight sponge spring is above the zero-pressure state, the breathable elastic sponge core 100 has a certain pulling effect on the cavity of the airtight elastic capsule 300, making the force inside the airtight sponge spring and the airtight elastic capsule 300 uniform, generating a very small deformation, and its volume also expands slightly, basically maintaining the original appearance.

[0038] In the zero-pressure state, that is, when the internal and external pressures are equal, the three-dimensional shape of the breathable elastic sponge core 100 is the same as the three-dimensional shape inside the cavity formed by the airtight elastic capsule 300 adhered to its outer surface, and their volumes are equal. The elastic force of the airtight sponge spring comes from the restraint of the breathable elastic sponge core 100 and the airtight elastic capsule 300 on the gas inside it.

[0039] In the negative-pressure state, that is, the gas in the airtight sponge spring is pumped out through the air nozzle 400, the volume of the airtight sponge spring shrinks, and the airtight elastic capsule 300 adhered to the surface of the breathable elastic sponge core 100 shrinks together. Based on the mesh structure of the breathable elastic sponge core 100 and the tight connection between its surface and the airtight elastic capsule 300, the breathable elastic sponge core 100 still maintains its original elastic force, making the airtight sponge spring still soft and the elastic force evenly distributed.

[0040] Preferably, a plurality of air flow channels 200 are arranged on the breathable elastic sponge core 100.

[0041] In this embodiment, the breathable elastic sponge core 100 is preferably in a cuboid structure, and four air flow channels 200 are preferably arranged in the length extension direction thereof. In this way, better air circulation can be achieved during the use of the airtight sponge spring, thereby realizing its good air permeability.

[0042] Furthermore, the breathable elastic sponge core 100 and the airtight elastic capsule 300 can be provided with a plurality of mutually parallel air flow channels 200, or air flow channels 200 that are perpendicular and connected to each other, or air flow channels 200 that are inclined and connected to each other. The specific direction of the air flow channels 200 can be adjusted according to the actual situation. In addition, the number of air flow channels 200 on the airtight sponge spring provided herein can also be one or more, and the specific number thereof is not specifically limited in this article.

[0043] Preferably, the material of the airtight elastic capsule 300 is specifically thermoplastic polyurethane elastomer, and the inner surface of the airtight elastic capsule 300 is bonded to the peripheral surface of the breathable elastic sponge core 100 through an adhesive 500.

[0044] In this embodiment, the airtight elastic capsule 300 is preferably TPU (TPU is the abbreviation of Thermoplastic Urethane in English, and the Chinese name is thermoplastic polyurethane elastomer). In addition, it can also be made of high molecular materials such as rubber and silica gel, which are not specifically limited in this article.

[0045] Moreover, the outer surface of the breathable elastic sponge core 100 can be bonded to the inner surface of the airtight elastic capsule 300. Specifically, a layer of adhesive 500 can be provided on the outer surface of the breathable elastic sponge core 100, and then the airtight elastic capsule 300 is pasted on the adhesive 500. Among them, the adhesive 500 is preferably a high-elastic hot melt adhesive film in this embodiment.

[0046] Preferably, the airtight elastic capsule 300 is formed on the surface of the breathable elastic sponge core 100 and the inner wall surface of the air flow channels 200 by a spraying method.

[0047] In this embodiment, the liquid elastic material is attached to the surface of the breathable elastic sponge core 100 and the inner wall of the air flow channels 200 by spraying or soaking. After the liquid elastic material is cured, the airtight elastic capsule 300 can be formed on the surface of the breathable elastic sponge core 100. This setting reduces the production links, improves the production efficiency, and has a high airbag sealing effect.

[0048] Preferably, a layer of mesh cloth is provided on the outer surface of the breathable elastic sponge core 100, the air flow channels 200 penetrate through the mesh cloth, and the airtight elastic capsule 300 is formed on the surface of the breathable elastic sponge core 100 and the mesh cloth and the inner wall surface of the air flow channels 200 by a spraying method.

[0049] In addition, in order to improve the structural strength of the airtight elastic bladder 300, a reinforcing material such as reinforcing fibers or fabric can be added between the inner surface of the airtight elastic bladder 300 and the outer surface of the breathable elastic sponge core 100 to prevent the airtight elastic bladder 300 from bursting due to excessive inflation pressure, or to prevent the airtight elastic bladder 300 from expanding excessively under high pressure and presenting bulges. In another embodiment of the present application, a layer of mesh fabric is laid between the two, and then a liquid elastic material is attached to the surface of the breathable elastic sponge core 100 and the mesh fabric and the inner wall of the air flow channel 200 by spraying or soaking to form a complete airtight elastic bladder 300.

[0050] Preferably, the airtight elastic bladder 300 is formed by splicing a plurality of elastic sheets; several elastic sheets are bonded to the outer surface of the breathable elastic sponge core 100 and the inner wall surface of the air flow channel 200, or several elastic sheets are formed into a three-dimensional airtight elastic bladder 300 by thermoforming and bonded to the outer surface of the breathable elastic sponge core 100 and the inner wall surface of the air flow channel 200.

[0051] Of course, the airtight elastic bladder 300 can also be formed by splicing a plurality of elastic sheets. Specifically, a plurality of elastic sheets can be directly bonded to the outer surface of the breathable elastic sponge core 100 and the inner wall surface of the air flow channel 200, or a three-dimensional airtight elastic bladder 300 can be first formed by thermoforming, and then the formed integral airtight elastic bladder 300 is bonded to the outer surface of the breathable elastic sponge core 100 and the inner wall surface of the air flow channel 200.

[0052] Preferably, the side wall of the airtight elastic bladder 300 is provided with a plurality of air nozzles 400.

[0053] In some embodiments of the present application, the side wall of the airtight elastic bladder 300 is provided with a plurality of air nozzles 400. The plurality of air nozzles 400 can be distributed on different sides of the airtight elastic bladder 300 or on the same side. The charging and discharging efficiency can be improved through the plurality of air nozzles 400. Of course, the number of air nozzles 400 on the airtight sponge spring provided herein can be selected according to the actual situation and is not specifically limited herein.

[0054] Preferably, the air nozzles 400 are air inlet and outlet nozzles 400, or one or more of the air nozzles 400 are air inlet nozzles 400 and the remaining air nozzles 400 are air outlet nozzles 400, or one or more of the air nozzles 400 are air outlet nozzles 400 and the remaining air nozzles 400 are air inlet nozzles 400.

[0055] Further, each air nozzle 400 is preferably an air inlet / outlet nozzle 400, that is, the air nozzle 400 can achieve the functions of inflation and deflation. After inflation, the air nozzle 400 can be automatically closed to avoid air leakage problems; or one or more of the air nozzles 400 are air inlet nozzles 400, and the remaining air nozzles 400 are air outlet nozzles 400; or one or more of the air nozzles 400 are air outlet nozzles 400, and the remaining air nozzles 400 are air inlet nozzles 400.

[0056] An embodiment of the present invention further provides a non-metallic spring pad, which includes the porous airtight sponge spring described above, and further includes an outer sleeve covering the outside of the porous airtight sponge spring. The outer surface of the porous airtight sponge spring is bonded to the inner surface of the outer sleeve. Among them, the beneficial effects of the porous airtight sponge spring can be referred to above.

[0057] Specifically, the outer surface of the porous airtight sponge spring is bonded to the inner surface of the outer sleeve. The outer sleeve and the porous airtight sponge spring can also be separated from each other. The outer sleeve can be formed on the outside of the porous airtight sponge spring by printing, or can be detachably connected to the porous airtight sponge spring. The outer sleeve mainly plays a protective role for the porous airtight sponge spring.

[0058] Preferably, there are multiple porous airtight sponge springs in the outer sleeve. The multiple porous airtight sponge springs are laid flat in the outer sleeve in the horizontal plane or stacked in the outer sleeve in the vertical direction; the porous airtight sponge spring is connected to the air flow control system to control the hardness and height adjustment of the airtight sponge spring.

[0059] Further, multiple porous airtight sponge springs can be arranged in the outer sleeve. The multiple porous airtight sponge springs are laid flat in the outer sleeve in the horizontal plane or stacked in the outer sleeve in the vertical direction. The laying method can increase the area of the non-metallic spring pad, and the stacking method can increase the thickness of the non-metallic spring pad to meet different needs of users, which can be specifically selected according to actual needs. Among them, due to the function of the air flow channel 200, the external air flow of the porous airtight sponge spring is smooth, and the internal gas flow channels of the non-metallic spring pad formed by the porous airtight sponge spring are increased, ensuring the air permeability of the non-metallic spring pad; in addition, the porous airtight sponge spring can also be connected to the air flow control system to realize the height and hardness adjustment of a single porous airtight sponge spring or the height and software adjustment of the entire non-metallic spring pad.

[0060] It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0061] In this specification, the various embodiments are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other.

[0062] The above has introduced the embodiments provided by the present utility model in detail. Specific examples are used herein to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and modifications can be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A porous airtight sponge spring, characterized in that: include: Breathable elastic sponge core (100); An air flow channel (200) is provided through the air-permeable elastic sponge core (100); An airtight elastic sac (300) is arranged on the peripheral surface of the air-permeable elastic sponge core (100) to form a closed space, and the inner surface of the airtight elastic sac (300) is fixedly connected to the peripheral surface of the air-permeable elastic sponge core (100); An air nozzle (400) is provided through the airtight elastic sac (300) to connect the air-permeable elastic sponge core (100) with the outside air.

2. The porous airtight sponge spring according to claim 1, characterized in that: A plurality of air flow channels (200) are provided on the air-permeable elastic sponge core (100).

3. The porous airtight sponge spring according to claim 1, characterized in that: The material of the airtight elastic bladder (300) is specifically thermoplastic polyurethane elastomer, and the inner surface of the airtight elastic bladder (300) is bonded to the peripheral surface of the air-permeable elastic sponge core (100) by means of an adhesive (500).

4. The porous airtight sponge spring according to claim 3, characterized in that: The airtight elastic bladder (300) is formed on the surface of the air-permeable elastic sponge core (100) and the inner wall surface of the air flow channel (200) by spraying.

5. The porous airtight sponge spring according to claim 3, characterized in that: The outer surface of the air-permeable elastic sponge core (100) is provided with a layer of mesh cloth, the air flow channel (200) penetrates the mesh cloth, and the airtight elastic bladder (300) is formed by spraying on the air-permeable elastic sponge core (100), the surface of the mesh cloth and the inner wall surface of the air flow channel (200).

6. The porous airtight sponge spring according to claim 3, characterized in that: The airtight elastic bladder (300) is formed by splicing a plurality of elastic sheets; A plurality of the elastic sheets are bonded to the outer surface of the breathable elastic sponge core (100) and the inner wall surface of the air flow channel (200), or a plurality of the elastic sheets are formed into a three-dimensional airtight elastic bladder (300) by means of blister molding and bonded to the outer surface of the breathable elastic sponge core (100) and the inner wall surface of the air flow channel (200).

7. The porous airtight sponge spring according to claim 1, characterized in that: A plurality of air nozzles (400) are provided on the side wall of the airtight elastic bag (300).

8. The porous airtight sponge spring according to claim 7, characterized in that: The air nozzles (400) are air inlet and outlet nozzles (400), or one or more of the air nozzles (400) are air inlet nozzles (400) and the remaining air nozzles (400) are air outlet nozzles (400), or one or more of the air nozzles (400) are air outlet nozzles (400) and the remaining air nozzles (400) are air inlet nozzles (400).

9. A non-metallic spring pad, characterized in that: It comprises the porous airtight sponge spring as described in any one of claims 1 to 8, and also comprises a jacket covering the outside of the porous airtight sponge spring, and the outer surface of the porous airtight sponge spring is bonded to the inner surface of the jacket.

10. The non-metallic spring washer according to claim 9, characterized in that: A plurality of the porous airtight sponge springs are arranged in the outer jacket, and the plurality of the porous airtight sponge springs are laid flat in the outer jacket in a horizontal plane, or are stacked in the outer jacket in a vertical direction; The porous airtight sponge spring is connected to an airflow control system to control the hardness and height adjustment of the airtight sponge spring.

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