Airbag assembly, pneumatic comfort system and vehicle

Abstract

This application relates to the field of massage airbag technology, and more particularly to an airbag assembly, a pneumatic comfort system, and a vehicle. The airbag assembly includes a bag body and an air inlet pipe; the bag body includes at least one cavity; the air inlet pipe is used to fill the cavity with a medium, and the portion of the air inlet pipe located within the cavity includes at least two branch pipes, the outlet direction of which is offset from the center of the cavity. In the airbag assembly of this application embodiment, the air inlet pipe has at least two branch pipes, and the outlet direction of the branch pipes is offset from the center of the cavity, thereby improving the problem of turbulent airflow within the bag body. Furthermore, by inflating the bag body through multiple branch pipes, the airflow velocity is reduced, thereby reducing the noise during airbag inflation and improving the problem of high noise levels during airbag inflation.

Description

Technical Field

[0001] This application relates to the field of massage airbag technology, and more particularly to an airbag assembly, a pneumatic comfort system, and a vehicle. Background Technology

[0002] In pneumatic comfort systems, the air inlet pipe is controlled to inflate and deflate the bag to achieve pneumatic massage and pneumatic support. In related technologies, the outlet end of the air inlet pipe is fused to the bag body, and the outlet of the air inlet pipe usually points to the center of the bag body. When the airflow flows into the bag body through the air inlet pipe, it will generate turbulence inside the bag body, producing a lot of noise; and the airflow velocity into the bag body is relatively fast, which will also generate a lot of noise. The noise affects the experience of the pneumatic comfort system. Utility Model Content

[0003] The embodiments of this application aim to provide an airbag assembly, a pneumatic comfort system, and a vehicle, so as to at least improve the problem of high noise when the airbag assembly is inflated.

[0004] In order to solve the above-mentioned technical problems, the embodiments of this application adopt the following technical solutions:

[0005] In a first aspect, embodiments of this application provide an air bag assembly, the air bag assembly including a bag body and an air inlet pipe; the bag body includes at least one cavity; the air inlet pipe is used to fill the cavity with a medium, and the portion of the air inlet pipe located in the cavity includes at least two branch pipes, the air outlet direction of the branch pipes being offset from the center of the cavity.

[0006] In some embodiments, the inner diameter of the branch pipe gradually increases along the gas outlet direction.

[0007] In some embodiments, the inner diameter of the branch pipe is constant.

[0008] In some embodiments, the outlet direction of the branch pipe is tangential to the inner wall of the cavity.

[0009] In some embodiments, the at least two branch pipes are distributed along the first surface; the cross-section of the cavity is circular along the direction perpendicular to the first surface.

[0010] In some embodiments, the number of branch pipes is two, and the included angle between the air outlet directions of the two branch pipes is an obtuse angle.

[0011] In some embodiments, the angle between the outlet directions of the two branch pipes is 105 degrees to 165 degrees.

[0012] In some embodiments, the two tubes are mirror-symmetric about the second surface, and the cavity itself is mirror-symmetric about the second surface.

[0013] Secondly, embodiments of this application provide a pneumatic comfort system, which includes an air source device, a fluid distribution device, and an air bag assembly as described in any embodiment of the first aspect, wherein the air source device is in fluid communication with the air bag assembly through the fluid distribution device.

[0014] Thirdly, embodiments of this application provide a vehicle that includes the aerodynamic comfort system as described in any embodiment of the second aspect.

[0015] The air bag assembly of this application embodiment has at least two branch pipes in the air inlet pipe, and the air outlet direction of the branch pipes is deviated from the center of the cavity, thereby improving the problem of turbulence in the airflow inside the bag. Furthermore, by inflating the bag into the bag through multiple branch pipes, the airflow velocity is reduced, thereby reducing the noise of the air bag assembly during inflation and improving the problem of high noise during inflation.

[0016] The pneumatic comfort system of this application includes an air source device, a fluid distribution device, and an air bag assembly, which can realize functions such as pneumatic support and pneumatic massage. The air bag assembly has at least two branch pipes in its air inlet pipe, and the air outlet direction of the branch pipes is offset from the center of the cavity, thereby reducing the noise of the pneumatic comfort system and improving the user experience of the pneumatic comfort system.

[0017] The vehicle in this application embodiment includes a pneumatic comfort system, wherein the air intake pipe of the air bag assembly is provided with at least two branch pipes, and the air outlet direction of the branch pipes is offset from the center of the cavity, thereby reducing the noise of the pneumatic comfort system, reducing the noise of the vehicle, and improving the driving experience of the vehicle.

[0018] The above description is merely an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, specific embodiments of this application are given below. Attached Figure Description

[0019] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0020] Figure 1 This is a perspective structural diagram of the airbag assembly according to an embodiment of this application;

[0021] Figure 2 This is a perspective structural schematic diagram of the airbag assembly according to another embodiment of this application;

[0022] Figure 3 This is a schematic diagram of the intake pipe according to an embodiment of this application;

[0023] Figure 4 This is a partially enlarged cross-sectional view of the airbag assembly according to an embodiment of this application;

[0024] Figure 5 The noise test diagram is for the airbag assembly in Comparative Example 1.

[0025] Figure 6 This is a noise test diagram of the air bag assembly in Example 1.

[0026] The reference numerals in the detailed embodiments are as follows:

[0027] 100. Airbag assembly;

[0028] 1. Bag body; 11. Cavity;

[0029] 2. Intake pipe; 21. Branch pipe;

[0030] a) First side; b) Second side; L) First flow trajectory. Detailed Implementation

[0031] To facilitate understanding of this application, the following description, in conjunction with the accompanying drawings and specific embodiments, will provide a more detailed account. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0033] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0034] In the description of the embodiments of this application, the terms "first," "second," etc., are used to define components merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, these terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0035] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0036] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0037] Firstly, please refer to Figure 1 and Figure 2 This application provides an air bag assembly 100, which includes a bag body 1 and an air inlet pipe 2. The bag body 1 includes at least one cavity 11. The air inlet pipe 2 is used to fill the cavity 11 with a medium. In this embodiment, a gas is used as the filling medium for illustration; in other embodiments, the filling medium may also be a liquid or other fluid.

[0038] For the aforementioned bag body 1, the bag body 1 can be made of at least one of plastic and rubber materials. When the air inlet pipe 2 inflates the bag body 1, the bag body 1 expands; when the air inlet pipe 2 deflates the bag body 1, that is, the gas inside the bag body 1 is discharged through the air inlet pipe 2, the bag body 1 deflates and contracts. By repeatedly inflating and deflating the bag body 1, the bag body 1 repeatedly expands and contracts to achieve pneumatic massage; by not deflating the bag body 1 after inflation, the bag body 1 maintains pressure to achieve pneumatic support. Optionally, the bag body 1 is disc-shaped or spherical. Optionally, the cavity 11 is disc-shaped or spherical.

[0039] For the aforementioned intake pipe 2, please refer to Figure 3 The air inlet pipe 2 can be a round or square pipe, as long as it can inflate and deflate the bag body 1. Optionally, the air inlet pipe 2 can be made of plastic.

[0040] The bag body 1 has an opening, and one end of the air inlet pipe 2 is inserted into the bag body 1 through the opening. The edge of the opening of the bag body 1 is sealed to the outer surface of the air inlet pipe 2, for example, by adhesive bonding or heat fusion, thus forming a sealed air bag assembly 100 that can only be inflated and deflated through the air inlet pipe 2. Alternatively, one end of a pipe is inserted into the bag body 1 through the opening, and the edge of the opening of the bag body 1 is sealed to the outer surface of the pipe. The air inlet pipe 2 is connected to the pipe and is in fluid communication with it. The pipe is used to inflate and deflate the bag body 1 through the air inlet pipe 2. The pipe is connected to the air inlet pipe 2 by insertion or adhesive bonding.

[0041] It should be noted that when the air bag assembly 100 performs pneumatic massage, the air inlet pipe 2 inflates the bag body 1 at a relatively fast speed, and the airflow into the bag body 1 flows at a relatively fast speed, generating a large amount of noise; in addition, the air outlet of the air inlet pipe 2 usually points to the center of the cavity 11, and when the airflow flows into the bag body 1 through the air inlet pipe 2, it will generate turbulence in the bag body 1, generating a large amount of noise.

[0042] In some embodiments, please refer to Figure 1 , Figure 3 and Figure 4 The portion of the air inlet pipe 2 located within the cavity 11 includes at least two branch pipes 21. Inflation of the bag 1 is achieved through multiple branch pipes 21, reducing the airflow velocity and thus decreasing the noise during inflation of the air bag assembly 100, thereby mitigating the problem of excessive noise during inflation. The branch pipes 21 can be round or square.

[0043] In some embodiments, please refer to Figure 1 The outlet direction of the branch pipe 21 deviates from the center of the cavity 11. The outlet direction refers to the direction in which the airflow finally exits the branch pipe 21. Therefore, in this embodiment, the airflow deviates from the center of the cavity 11 when it exits the branch pipe 21. Taking two branch pipes 21 as an example, the gas flowing out of the two branch pipes 21 flows along the edge of the cavity 11. When the two airflows collide with each other, they form a spiral airflow, thereby improving the problem of turbulence in the airflow within the bag body 1, reducing the noise during inflation of the air bag assembly 100, and improving the problem of high noise during inflation of the air bag assembly 100.

[0044] In some embodiments, please refer to Figure 1 Branch pipe 21 is a straight pipe. That is, the central axis of branch pipe 21 is a straight line, and the end face of the end of branch pipe 21 is perpendicular to the central axis.

[0045] In some embodiments, please refer to Figure 4The inner diameter of the branch pipe 21 gradually increases along the air outlet direction. This increase or decrease in the inner diameter of the branch pipe 21 refers to the increase or decrease in the inner diameter of the branch pipe 21 along the direction of gas flow when the air inlet pipe 2 inflates the bag body 1. When the air inlet pipe 2 inflates the bag body 1, the airflow flows along the branch pipe 21, the cross-sectional area of ​​the airflow gradually increases, and the airflow velocity gradually decreases, thereby reducing the noise during inflation of the air bag assembly 100. Furthermore, when the bag body 1 needs to deflate, the gas inside the bag body 1 is drawn from the larger opening to the smaller opening. The fluid passes through the gradually decreasing inner diameter contraction section, which has a certain acceleration effect, thus increasing the deflation speed of the bag body 1, making it particularly suitable for massage modes requiring rapid inflation and deflation. Optionally, the branch pipe 21 is cylindrical. Optionally, the outer diameter of the branch pipe 21 remains constant. In some other embodiments, the inner diameter of the branch pipe 21 is constant, meaning that when the air inlet pipe 2 inflates the bag body 1, the airflow flows along the branch pipe 21, the cross-sectional area of ​​the airflow remains unchanged, and the airflow velocity remains constant.

[0046] In some embodiments, please refer to Figure 1 The outlet direction of branch pipe 21 is tangential to the inner wall of cavity 11. The line connecting the end of branch pipe 21 to the center of cavity 11 extends to the inner wall of cavity 11. The tangential plane at the intersection of the inner wall of cavity 11 and this line is parallel to the outlet direction of branch pipe 21, i.e., the outlet direction of branch pipe 21 is tangential to the inner wall of cavity 11. Therefore, when airflow exits branch pipe 21, the airflow direction is parallel to the closest point between the inner wall of cavity 11 and the airflow, reducing the force of the airflow impacting the inner wall of cavity 11, reducing airflow energy loss, and reducing noise.

[0047] In some embodiments, please refer to Figure 1 and Figure 2 At least two branch pipes 21 are distributed along the first surface a. The branch pipes 21 are all distributed along the first surface a, meaning that the central axis of each branch pipe 21 coincides with the first surface a, thus the airflow from each branch pipe 21 can be considered to flow along the first surface a. The cross-section of the cavity 11 is circular along the direction perpendicular to the first surface a. That is, any plane parallel to the first surface a has a circular cross-section with respect to the cavity 11, making the cavity 11 a body of revolution, such as a cylinder or a sphere, with the axis of revolution of the cavity 11 perpendicular to the central axis of each branch pipe 21. Thus, when the airflow spirals within the cavity 11, at least a portion of the airflow also flows along the inner wall of the cavity 11, reducing energy loss and noise generated by the airflow.

[0048] In some embodiments, please refer to Figure 1 and Figure 2Along the direction perpendicular to the second surface b, the cross-section of the cavity 11 is elliptical. That is, any plane parallel to the second surface b will have an elliptical cross-section of the cavity 11, thus the cavity 11 is oblate. In this embodiment, the second surface b is perpendicular to the first surface a; in other embodiments, the angle between the second surface b and the first surface a may also be an acute angle.

[0049] In some embodiments, please refer to Figure 4 The number of branch pipes 21 is two, and the angle between the air outlet directions of the two branch pipes 21 is an obtuse angle. For example, the angle between the air outlet directions of the two branch pipes 21 is between 105 degrees and 165 degrees. When the airflow exits from the two branch pipes 21, the angle between the two airflows is an obtuse angle, reducing the mutual influence between the two airflows immediately after exiting the branch pipes 21, improving the problem of mixed flow between the two airflows immediately after exiting the branch pipes 21, and enhancing the technical effect of the air inlet pipe 2 including two branch pipes 21 to reduce noise during inflation of the air bag assembly 100. Optionally, the angle between the air outlet directions of the two branch pipes 21 is 120 degrees.

[0050] In some embodiments, please refer to Figure 1 and Figure 4 The two branch pipes 21 are mirror-symmetrical about the second surface b, and the cavity 11 itself is also mirror-symmetrical about the second surface b. That is, the spatial shape of the cavity 11 is mirror-symmetrical, with the second surface b as the plane of symmetry. When the airbag assembly 100 is inflated, each of the two branch pipes 21 emits an airflow. These two airflows are mirror-symmetrical about the second surface b immediately after exiting the branch pipes 21, and the cavity formed by the inner wall of the cavity 11 and the two branch pipes 21 is also mirror-symmetrical about the second surface b. Therefore, theoretically, the two airflows are always mirror-symmetrical about the second surface b, meaning their first flow trajectory L is mirror-symmetrical about the second surface b. It is understandable that if the flow trajectories of the two airflows are not mirror-symmetrical about the second surface b, or if the cavity 11 is not mirror-symmetrical about the second surface b, the two airflows will influence each other, causing their flow trajectories to constantly change. These constantly changing flow trajectories may eventually form a stable flow trajectory, but this takes time. Therefore, it is difficult for these two airflows to form a stable flow trajectory during a complete inflation cycle of the airbag assembly 100. In this embodiment, the first flow trajectory L of the two airflows is mirror-symmetrical about the second surface b, so that the first flow trajectory L of the two airflows remains stable and unchanged, which improves the problem of the airflow trajectory constantly changing due to the mutual influence of the two airflows, improves the problem of turbulence generated in the airflow in the bag body 1, and reduces the noise when the air bag assembly 100 is inflated.

[0051] In some embodiments, please refer to Figure 1 and Figure 4 The intake pipe 2 is mirror-symmetrical about the second surface b.

[0052] Secondly, embodiments of this application provide a pneumatic comfort system (not shown), which includes an air source device (not shown), a fluid distribution device (not shown), and an air bag assembly 100 as described in any embodiment of the first aspect. The air source device is fluidly connected to the air bag assembly 100 via the fluid distribution device. The fluid distribution device controls the opening and closing of the air passage between the air source device and the air bag assembly 100, thereby controllably supplying air to the air bag assembly 100, causing the bag 1 to inflate. The fluid distribution device also fluidly connects the air bag assembly 100 to the external environment or a negative pressure device, causing the bag 1 to deflate and contract. Through the expansion, contraction, and pressure maintenance of the bag 1, pneumatic massage and pneumatic support can be achieved. By employing the aforementioned air bag assembly 100, specifically the aforementioned air inlet pipe 2, the pneumatic comfort system reduces the noise generated by the system and improves the user experience. The number of air bag assemblies 100 can be multiple. The fluid distribution device is used to independently control the opening and closing of the air passage between the air source device and multiple air bag assemblies 100, so as to realize that multiple bags 1 can be independently inflated and deflated.

[0053] Thirdly, embodiments of this application provide a vehicle (not shown) including a pneumatic comfort system as described in any embodiment of the second aspect. The airbag assembly 100 in the pneumatic comfort system can be disposed within the vehicle's seat, for example, within the seat portion, backrest, or armrest, thereby providing pneumatic massage and pneumatic support for passengers seated in the seat. By employing the aforementioned pneumatic comfort system, specifically the aforementioned airbag assembly 100, the vehicle reduces vehicle noise and improves the driving experience.

[0054] To evaluate the beneficial effects of the airbag assembly 100 of this application, it was tested.

[0055] [Material Preparation]

[0056] Comparative Example 1: The air bag assembly 100 includes a bag body 1 and an air inlet pipe 2; the bag body 1 includes a cavity 11; the air inlet pipe 2 is used to fill the cavity 11 with a medium, and the portion of the air inlet pipe 2 located inside the cavity 11 includes only one opening, and the opening points to the center of the cavity 11.

[0057] Example 1: The air bag assembly 100 includes a bag body 1 and an air inlet pipe 2; the bag body 1 includes a cavity 11; the air inlet pipe 2 is used to fill the cavity 11 with a medium, and the portion of the air inlet pipe 2 located inside the cavity 11 includes two branch pipes 21, and the air outlet direction of the branch pipes 21 is offset from the center of the cavity 11.

[0058] Except for the above structural differences, the structures of Example 1 and Comparative Example 1 are the same.

[0059] [Testing Method]

[0060] Noise tests were conducted on Example 1 and Comparative Example 1. The airbag assemblies 100 of Comparative Example 1 and Example 1 were synchronously inflated and deflated using the same air source device and the same fluid distribution device. Noise levels of the airbag assemblies 100 of Comparative Example 1 and Example 1 were collected using a noise acquisition device. The airbag assemblies 100 of Comparative Example 1 and Example 1 could be placed in different soundproof boxes to mitigate the problem of mutual noise interference. The noise acquisition device could be an A-weighted sound level meter. A-weighting is a frequency weighting method in acoustic measurement based on the characteristics of human hearing, which corrects the sound pressure level at different frequencies to make the measurement results more consistent with subjective human perception; the unit is dB(A).

[0061] [Test Results]

[0062] Noise was collected separately using a noise acquisition device, as shown below. Figure 5 and Figure 6 The noise test results. Among them, Figure 5 The noise test diagram is for the airbag assembly 100 in Comparative Example 1. Figure 6 This is a noise test diagram of the air bag assembly 100 in Example 1. Figure 5 and Figure 6 In the graph, the horizontal axis represents time in seconds (s), and the vertical axis represents sound pressure level (SPL) in dB(A).

[0063] from Figure 5 and Figure 6 As can be seen from the above, the air bag assembly 100 of Example 1 reduces the noise by about 8 dB(A) compared with the air bag assembly 100 of Comparative Example 1. That is, the air bag assembly 100 of the present application embodiment can reduce the noise during inflation and the noise during deflation.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them; under the concept of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this application as described above, which are not provided in detail for the sake of brevity; although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An airbag assembly characterized by, include: The bag includes at least one cavity; An air inlet pipe is used to fill the cavity with a medium. The portion of the air inlet pipe located within the cavity includes at least two branch pipes, the outlet direction of which is offset from the center of the cavity.

2. The airbag assembly according to claim 1, characterized in that, The inner diameter of the branch pipe gradually increases along the gas outlet direction.

3. The airbag assembly according to claim 1, characterized in that, The inner diameter of the branch pipe is constant.

4. The airbag assembly according to claim 1, characterized in that, The outlet direction of the branch pipe is tangential to the inner wall of the cavity.

5. The airbag assembly according to claim 1, characterized in that, The at least two branches are distributed along the first surface; The cross-section of the cavity is circular along a direction perpendicular to the first surface.

6. The airbag assembly according to claim 1, characterized in that, The number of branch pipes is two, and the included angle between the air outlet directions of the two branch pipes is an obtuse angle.

7. The airbag assembly according to claim 6, characterized in that, The angle between the outlet directions of the two branch pipes is 105 degrees to 165 degrees.

8. The airbag assembly according to claim 6, characterized in that, The two tubes are mirror-symmetric about the second surface, and the cavity itself is mirror-symmetric about the second surface.

9. A pneumatic comfort system characterized in that, include: Gas source device; The airbag assembly as described in any one of claims 1 to 8; A fluid distribution device, wherein the gas source device is in fluid communication with the gas bag assembly through the fluid distribution device.

10. A vehicle characterized by comprising: Includes the pneumatic comfort system as described in claim 9.

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