A muffling air nozzle and a muffling air bag

Abstract

The utility model relates to a kind of sound attenuation air nozzle and mute air bag.The utility model's sound attenuation air nozzle includes the air inlet part and air outlet part connected with each other, the air inlet part has air inlet cavity and the air inlet port communicated with the air inlet cavity, the air outlet part includes the air outlet cavity with the first end and communication in the air inlet cavity, the air outlet part includes the air hole being set in the second end of the air outlet cavity and being communicated with the air outlet cavity, drainage member is arranged in the air outlet cavity.By the setting of sound attenuation air nozzle, airflow enters air outlet cavity after entering air inlet cavity through air inlet port, due to the air outlet cavity setting drainage member, airflow is guided and dispersed, so as to effectively reduce airflow velocity, reduce airflow noise.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic adjustment element technology, and in particular to a silencer nozzle and a silent air bag. Background Technology

[0002] Pneumatic comfort systems include pneumatic lumbar support systems and pneumatic massage systems. These systems use an air source to inflate lumbar support airbags and massage airbags located on support devices, providing both pneumatic support and massage. For example, in a seat pneumatic massage system, massage airbags are distributed on the backrest or seat area; inflating these airbags provides a massage function for the occupant.

[0003] In traditional pneumatic comfort systems, one end of the air tube extends directly into the inflation space of the air bag, while the other end connects to the air source via a valve. During inflation, the airflow is directly injected into the inflation space from the end of the air tube. This high-velocity airflow easily creates eddies within the inflation space of the air bag, generating significant noise and negatively impacting the user experience. Therefore, it is necessary to design a silencer nozzle connected to the air tube to reduce noise from the airflow entering the air bag. Utility Model Content

[0004] In view of the above problems, the present invention provides a silencer nozzle and a silent air bag, which overcomes or at least partially solves the above problems.

[0005] According to one aspect of the present invention, a silencer nozzle is provided, comprising an air inlet and an air outlet connected to each other. The air inlet has an air inlet cavity and an air inlet communicating with the air inlet cavity. The air outlet includes an air outlet cavity with a first end communicating with the air inlet cavity. The air outlet includes a vent hole disposed at a second end of the air outlet cavity and communicating with the air outlet cavity. A guide element is disposed in the air outlet cavity.

[0006] In one alternative embodiment, the extension direction of the drain element is the same as the air intake direction.

[0007] In one alternative approach, the number of drainage elements is several, and the several drainage elements are spaced apart.

[0008] In one alternative approach, the spacing between two adjacent air intakes gradually increases along the air intake direction.

[0009] In one alternative embodiment, the extension direction of the drain element intersects with the air intake direction.

[0010] In one alternative approach, the number of the drainage elements is several, and adjacent drainage elements are staggered along the air intake direction.

[0011] In one alternative approach, adjacent edges of two adjacent air intakes are aligned along the air intake direction.

[0012] In one alternative embodiment, the vents include a plurality of vents arranged in an array along a direction intersecting the air intake direction.

[0013] In one alternative embodiment, at least a portion of the cross-sectional area of ​​the second end of the air outlet is larger than the cross-sectional area of ​​the first end.

[0014] According to another aspect of the present invention, a silent air bag is provided, including a bag body, an air tube and the aforementioned silencer nozzle, wherein the silencer nozzle is disposed on the bag body, a plurality of the air vents are connected to the inflation space of the bag body, the air inlet of the air inlet is connected to one end of the air tube, and the other end of the air tube is located outside the bag body.

[0015] The beneficial effects of this utility model embodiment are as follows: A silencer nozzle is provided. With the silencer nozzle, the airflow enters the air intake chamber through the air inlet and then enters the air outlet chamber. Since the air outlet chamber is equipped with a guide, the airflow is guided and dispersed, thereby enhancing the directional flow of the airflow and effectively reducing the airflow speed and reducing airflow noise.

[0016] In addition, when the silencer nozzle is applied to the bag body, the airflow from the air tube into the bag body passes through the silencer nozzle located at the end of the air tube and then enters the inflation space of the bag body. The airflow is guided, dispersed and slowed down by the guide element in the silencer nozzle before entering the inflation space of the bag body, reducing eddies and lowering the noise of inflating the bag body, forming a silent air bag and improving the user experience. Attached Figure Description

[0017] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with 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.

[0018] Figure 1 This is a schematic diagram of one implementation of the silencer nozzle provided in this utility model embodiment.

[0019] Figure 2 The embodiment of this utility model provides the following... Figure 1 A sectional view of P.

[0020] Figure 3 This is a cross-sectional view of another implementation of the silencer nozzle provided in this utility model embodiment.

[0021] Figure 4This is a schematic diagram of another implementation of the silencer nozzle provided in this utility model embodiment.

[0022] Figure 5 The embodiment of this utility model provides the following... Figure 4 A cross-sectional view of Q.

[0023] Figure 6 This is a schematic diagram of the silent airbag provided in an embodiment of the present invention.

[0024] Figure 7 This is a cross-sectional view of one implementation of the silent airbag provided in this utility model embodiment.

[0025] Figure 8 This is a schematic diagram of another implementation of the silent airbag provided in this utility model embodiment.

[0026] Figure 9 This is a cross-sectional view of another implementation of the silent airbag provided in this utility model embodiment.

[0027] The labels in the attached diagram are as follows: 100. Silencer nozzle; 10. Air intake section; 20. Air outlet section; 30. Limiting section; 40. Drainage component; 10a. Intake chamber; 10b. Intake port; 21. First end; 22. Second end; 20a. Air outlet chamber; 20b. Vent hole; D1. Air inlet direction; 200. Silent air bag; 50. Bag body; 60. Air tube. Detailed Implementation

[0028] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as 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 connected to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms vertical, horizontal, left, right, inner, outer, and similar expressions used in this specification are for illustrative purposes only.

[0029] 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 invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The terminology used in this specification includes any and all combinations of one or more of the associated listed items.

[0030] Please see Figures 1 to 5 This utility model provides a silencer nozzle 100, which includes an air inlet 10 and an air outlet 20 connected to each other. When air is intake, the airflow enters from the air inlet 10 and flows to the air outlet 20, and then flows from the air outlet 20 into the inflation element, such as a bag.

[0031] The air intake section 10 has a first end and a second end disposed opposite to each other along the air intake direction D1. Correspondingly, the air outlet section 20 has a first end 21 and a second end 22 disposed opposite to each other, with the first end 21 and the second end 22 being the inlet and outlet ends along the air intake direction D1. In a preferred embodiment, the air intake direction D1 is the axial direction of the air intake section 10, and the air intake direction D1 is along the axial direction of the air outlet section 20, that is, the first end 21 and the second end 22 are respectively located at the axial ends of the air outlet section 20. The first end of the air outlet section 20 is connected to the second end of the air intake section 10, corresponding to the gas flow direction along the air intake direction D1.

[0032] The air intake section 10 has an air intake chamber 10a and an air inlet 10b communicating with the air intake chamber 10a. The air inlet 10b is specifically disposed at the first end of the air intake section 10. The air outlet section 20 includes an air outlet chamber 20a with its first end 21 communicating with the air intake chamber 10a. The first end 21 of the air outlet chamber 20a corresponds to the first end of the air outlet section 20. The first end 21 of the air outlet chamber 20a is specifically communicating with the second end of the air intake chamber 10a. Furthermore, the air outlet section 20 includes a vent 20b disposed at the second end 22 of the air outlet chamber 20a and communicating with the air outlet chamber 20a. The second end 22 of the air outlet chamber 20a corresponds to the second end 22 of the air outlet section 20. The vent 20b is used to allow airflow to flow out from the air outlet chamber 20a.

[0033] When the silencer nozzle 100 is inlet, the gas flows from the inlet port 10b into the inlet chamber 10a, then into the connected outlet chamber 20a, and finally out through the connected vent port 20b.

[0034] The air inlet 10b is a single air inlet connected to the air intake chamber 10a, and the number of vent holes 20b can be one or more. When there is only one vent hole 20b, it is located at the second end of the air outlet chamber 20a, and its diameter is designed to be larger than the diameter of the air inlet 10b, such as a ratio of 6:1. Alternatively, there can be multiple vent holes 20b, such as at least two, arranged in an array along the direction intersecting the air intake direction D1. The array arrangement of vent holes 20b can evenly disperse the airflow, allowing the airflow to be discharged dispersedly from multiple vent holes 20b, thereby reducing noise problems caused by concentrated airflow. In addition, the array arrangement design can also improve the uniformity of the exhaust, making the airflow more stable and reducing the generation of turbulence.

[0035] In some embodiments, among the at least two plurality of vent holes 20b, the diameter of a single vent hole 20b is smaller than the diameter of the air inlet 10b, while the sum of the diameters of the at least two vent holes 20b is larger than the diameter of the air inlet 10b. The larger airflow stream entering the air inlet 10b is dispersed into smaller airflow streams as it passes through the plurality of vent holes 20b and flows into the element to be inflated, effectively reducing the airflow velocity and thus significantly reducing the airflow jet noise.

[0036] Understandably, along the thickness direction perpendicular to the P surface, the air outlet 20 is preferably designed as a flat structure to facilitate the use and positioning of the overall silencer nozzle 100 and reduce the feeling of foreign objects during use.

[0037] In a preferred embodiment, a guide member 40 is provided in the air outlet chamber 20a of the air outlet section 20. Airflow enters the air inlet chamber 10a through the air inlet 10b and then enters the air outlet chamber 20a. Because the air outlet chamber 20a is equipped with the guide member 40, the guide member 40 can guide and disperse the airflow (e.g., Figure 2 The airflow indicated by the arrow is dispersed, thereby effectively reducing airflow speed and airflow noise.

[0038] It is worth noting that, Figure 2 The arrows in the diagram merely illustrate one flow state of the airflow in the outlet chamber 20a and are not intended to define the actual flow path of the airflow.

[0039] The aforementioned draining member 40 can be an integrally formed structure on the air outlet cavity 20a, such as being formed by a protrusion on the inner wall of the air outlet cavity 20a during injection molding.

[0040] In some embodiments, please refer to Figure 2 The extension direction of the guide member 40 is the same as the air intake direction D1. When the airflow enters the outlet chamber 20a, it is guided and dispersed by the guide member 40, breaking down a larger airflow stream into a smaller one, and flows smoothly through the outlet chamber 20a, reducing the impact noise caused by the airflow concentrating at the second end 22 of the outlet chamber 20a. Preferably, the extension length of the guide member 40 is less than the distance from the first end to the second end of the outlet chamber 20a.

[0041] In some embodiments, the number of diversion elements 40 is several, and the several diversion elements 40 are arranged at intervals to enhance the dispersion effect on the airflow and further improve the noise reduction effect.

[0042] In some embodiments, the distance between two adjacent air guides 40 gradually increases along the air intake direction D1. The two adjacent air guides 40 form a funnel-shaped expansion structure, thereby better guiding the airflow to diffuse evenly, reducing airflow velocity, and further improving noise reduction. The arrangement of the air guides 40 can also reduce vortex phenomena in the air outlet chamber 20a, avoiding additional noise caused by airflow turbulence.

[0043] When there are multiple vent holes 20b, there is at least one vent hole 20b between two drainage components 40. If there are n vent holes, the second end 22 of the corresponding air outlet chamber 20a between two drainage components 40 can have a vent holes 20b. It can be understood that n≥2, 1≤a<n.

[0044] In other embodiments, please refer to Figure 3 Or please see Figure 4 and Figure 5 The extension direction of the guide element 40 intersects with the intake direction D1. The arrangement of the guide element 40 can not only disperse the airflow (e.g., Figure 3 The airflow indicated by the arrow is dispersed, and the direction of the airflow can be changed, making the airflow more evenly distributed in the outlet chamber 20a, thereby further reducing the airflow speed and reducing airflow noise. Preferably, the extension length of the guide member 40, whose extension direction intersects the intake direction D1, is less than the width of the outlet chamber 20a in the direction intersecting the intake direction D1.

[0045] It is worth noting that, Figure 3 or Figure 5 The arrows in the diagram merely illustrate one flow state of the airflow in the outlet chamber 20a and are not intended to define the actual flow path of the airflow.

[0046] In some preferred embodiments, the extension direction of the guide member 40 is perpendicular to the air intake direction D1. This vertically positioned guide member 40 can effectively prevent the airflow from directly impacting the wall of the outlet chamber 20a, thereby reducing the generation of reflected noise. At the same time, the guide member 40 can also divide the airflow into multiple smaller airflow units, so that the airflow is evenly distributed within the outlet chamber 20a, and reduce the generation of eddies, thereby reducing the noise problem caused by local high-speed airflow.

[0047] In some embodiments, the number of guide elements 40 is several, and adjacent guide elements 40 are staggered along the air intake direction D1 to enhance the noise reduction effect of the guide elements 40 on airflow. In practical applications, the number and position of the guide elements 40 can be flexibly adjusted according to the airflow characteristics. For example, along the air intake direction D1, the adjacent edges of two adjacent guide elements 40 are aligned to further reduce the vortex generated between two adjacent guide elements 40 along the air intake direction D1 when the airflow is intake, thereby achieving the optimal noise reduction effect.

[0048] It is worth noting that in some embodiments, such as Figure 1 , Figure 2 or Figure 3 As shown, the muffler nozzle 100 also includes a limiting part 30 connected between the air inlet 10 and the air outlet 20.

[0049] The limiting part 30 can be used in conjunction with external equipment (such as the bag body 50 of the silencer air bag 200 hereinafter) to limit the installation position of the silencer nozzle 100, preventing the silencer nozzle 100 from shifting or falling off during use, thereby ensuring the stability and reliability of its installation. The limiting part 30 can also be used to limit the assembly position of external equipment (such as the air pipe 60 hereinafter) mounted on the air intake 10, making the connection between the external equipment and the air intake 10 tighter and preventing airflow leakage or component detachment due to loose connection.

[0050] Furthermore, the limiting part 30 can be designed as an annular flange, a snap-fit ​​protrusion, or other adaptable shapes. The limiting part 30 is located at the connection between the air intake part 10 and the air outlet part 20, and its specific location can be close to either the air intake part 10 or the air outlet part 20. In the specific embodiment shown, the limiting part 30 is a flange surrounding the outer periphery of the air intake part 10 near the air outlet part 20, and is fixedly connected to the air intake part 10.

[0051] In some embodiments, the limiting part 30 is integrally formed with the air intake part 10, thereby improving the strength and stability of the overall structure. It is understood that the air intake part 10, the air outlet part 20 and the limiting part 30 can also be integrally formed, such as the integral muffler nozzle 100 being an integral injection molded part, thereby improving the strength and stability of the overall structure of the muffler nozzle 100.

[0052] In some embodiments, such as Figure 1 , Figure 2 or Figure 3 As shown, the air intake 10 can have a straight-through hole structure with uniform aperture, that is, the air intake 10 has a straight-through structure with the air intake chamber 10a and the air intake port 10b having the same diameter, ensuring the stability of airflow entering the air intake 10. In addition, the straight-through hole structure of the air intake 10 also facilitates connection with the air tube when it is subsequently used in an air bag.

[0053] In some other embodiments, at least a portion of the cross-sectional area of ​​the second end 22 of the air outlet chamber 20a is larger than the cross-sectional area of ​​the first end 21 of the air outlet chamber 20a. The air outlet 20 has a funnel-shaped expansion structure, so during the airflow from the first end 21 to the second end 22 of the air outlet chamber 20a, the airflow is further dispersed within the air outlet chamber 20a (e.g., ...). Figure 2 or Figure 3 The airflow indicated by the middle arrow is dispersed, thereby effectively reducing airflow speed and airflow noise.

[0054] The cross-sectional area of ​​the first end 21 of the air outlet chamber 20a refers to the area of ​​the cross-section formed by cutting the first end 21 of the air outlet chamber 20a with a plane perpendicular to the air intake direction D1 of the air intake section 10. In some embodiments, the air inlet 10b coincides with the axis of the air intake chamber 10a, such as when the air intake section 10 is a through-hole structure with the same diameter for both the air intake chamber 10a and the air inlet 10b, and the air intake direction D1 of the air intake section 10 is the axial direction of the air intake section 10. The air intake direction D1 of the air intake section 10 also coincides with the direction from the first end 21 to the second end 22 of the air outlet chamber 20a.

[0055] The cross-sectional area of ​​the second end 22 of the air outlet chamber 20a refers to the area of ​​the cross-section formed by cutting the second end 22 of the air outlet chamber 20a with a plane perpendicular to the air intake direction D1 of the air intake section 10. The second end 22 of the air outlet chamber 20a may have different shapes, such as semi-circular, arc-shaped or irregular, as long as it can ensure that at least a part of the cross-sectional area of ​​the second end 22 of the air outlet chamber 20a is greater than the cross-sectional area of ​​the first end 21 of the air outlet chamber 20a.

[0056] In some embodiments, such as Figure 1 , Figure 2 or Figure 3 As shown, the end face of the second end 22 of the air outlet chamber 20a is an arc-shaped surface that protrudes from the first end 21. That is, when viewed along the thickness direction perpendicular to the P surface, the air outlet 20 is fan-shaped. This structural design can not only effectively guide the airflow to diffuse outward, but also further reduce the impact noise caused by the airflow concentrating at the second end 22 of the air outlet 20.

[0057] In some embodiments, such as Figure 4 and Figure 5 As shown, the second end 22 of the air outlet chamber 20a is planar. The end face of the second end 22 has a planar structure, and viewed along the thickness direction perpendicular to the P-plane, the air outlet 20 as a whole is triangular. This planar structure also ensures uniform airflow diffusion (e.g., Figure 4 The airflow indicated by the middle arrow is dispersed, which simplifies the processing of the air outlet 20 and reduces production costs.

[0058] Please see Figure 6 and combination Figure 7 or Figure 8 or Figure 9 This utility model embodiment also provides an embodiment of a silent air bag 200, which includes a bag body 50, an air tube 60, and any of the aforementioned silencer nozzles 100. The silencer nozzle 100 is disposed on the bag body 50, and the air vent 20b of the silencer nozzle 100 is connected to the inflation space of the bag body 50. The air inlet 10b of the air inlet 10 is connected to one end of the air tube 60, and the other end of the air tube 60 is located outside the bag body 50.

[0059] When the silencer nozzle 100 includes a limiting part 30, the air pipe 60 is inserted into and fixed to the air inlet 10, and the insertion stroke can be limited by the limiting part 30.

[0060] Specifically, the body 50 of the silent air bag 200 is composed of two diaphragms welded together at their periphery. A silencer nozzle 100 is located between the two diaphragms, and the weld between the two diaphragms secures the limiting part 30 and / or the air inlet of the silencer nozzle 100, thus forming a fixed connection between the silencer nozzle 100 and the body 50. The second end 22 of the outlet part 20 of the silencer nozzle 100 is located within the inflation space of the body 50, and the air inlet 10b of the air inlet part 10 is located outside the body 50 or extends outside the body 50 via an air pipe 60. The end of the air pipe 60 extending outside the body 50 is a free end, used to connect to an air source via an air valve.

[0061] When the bag 50 is inflated, the external air source enters the silencer nozzle 100 through the air pipe 60. After being slowed down and reduced in noise by the silencer nozzle 100, the air enters the inflation space of the bag 50, effectively reducing the noise generated during the inflation process.

[0062] For example, please see Figure 7 Due to the arrangement of the guide element 40 in the air outlet chamber 20a, the guide element 40 has the same extension direction as the air intake direction D1. Along the air intake direction D1, the distance between two adjacent guide elements 40 gradually increases, which guides and disperses the airflow, thereby effectively reducing the airflow speed and reducing airflow noise.

[0063] For example, please see Figure 8 The end face of the second end 22 of the outlet chamber 20a of the silencer nozzle 100 is an arc-shaped surface that protrudes away from the first end 21. The extension direction of the guide member 40 intersects with the air intake direction D1. If the guide member 40 intersects with or is perpendicular to the air intake direction D1, and adjacent guide members 40 are staggered along the air intake direction D1, it can effectively block the airflow from directly impacting the wall of the outlet chamber 20a, thereby reducing the generation of reflected noise. At the same time, the guide member 40 can also divide the airflow into multiple smaller airflow units, so that the airflow is evenly distributed in the outlet chamber 20a, reducing the noise problem caused by local high-speed airflow. After the silencer nozzle 100 reduces the noise of the airflow, the noise when the airflow enters the inflation space of the bag body 50 is significantly reduced.

[0064] For example, please see Figure 9The second end 22 of the air outlet chamber 20a of the silencer nozzle 100 is planar. The air outlet chamber 20a is provided with a guide member 40, the extension direction of which intersects the air inlet direction D1. If the guide member 40 intersects or is perpendicular to the air inlet direction D1, and adjacent guide members 40 are staggered along the air inlet direction D1, the guide member 40 divides and guides the airflow, ensuring uniform airflow distribution and thus reducing noise. After the silencer nozzle 100 reduces the noise of the airflow, the noise when the airflow enters the inflation space of the bag body 50 is significantly reduced.

[0065] It should be noted that while the preferred embodiments of this utility model are provided in the specification and accompanying drawings, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are not intended to impose additional limitations on the content of this utility model; their purpose is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Furthermore, the above-described technical features can be combined with each other to form various embodiments not listed above, all of which are considered to be within the scope of this utility model specification. Moreover, those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A silencer nozzle, characterized in that, It includes an air inlet and an air outlet connected to each other. The air inlet has an air inlet chamber and an air inlet communicating with the air inlet chamber. The air outlet includes an air outlet chamber with a first end communicating with the air inlet chamber. The air outlet includes a vent hole disposed at a second end of the air outlet chamber and communicating with the air outlet chamber. A guide is disposed in the air outlet chamber.

2. The silencer nozzle according to claim 1, characterized in that, The extension direction of the draining component is the same as the air intake direction.

3. The silencer nozzle according to claim 2, characterized in that, The number of drainage components is several, and the drainage components are arranged at intervals.

4. The silencer nozzle according to claim 3, characterized in that, Along the air intake direction, the distance between two adjacent air intake elements gradually increases.

5. The silencer nozzle according to claim 1, characterized in that, The extension direction of the draining component intersects with the air intake direction.

6. The silencer nozzle according to claim 5, characterized in that, The number of the guide elements is several, and adjacent guide elements are staggered along the air intake direction.

7. The silencer nozzle according to claim 6, characterized in that, Along the air intake direction, the adjacent edges of two adjacent air intakes are aligned.

8. The silencer nozzle according to claim 1, characterized in that, The ventilation holes include several, and are arranged in an array along a direction intersecting the air intake direction.

9. The silencer nozzle according to any one of claims 1-8, characterized in that, At least a portion of the cross-sectional area of ​​the second end of the air outlet chamber is larger than the cross-sectional area of ​​the first end.

10. A silent airbag, characterized in that, The bag includes a bag body, an air tube, and a silencer nozzle as described in any one of claims 1-9. The silencer nozzle is disposed on the bag body, and a plurality of the air vents are connected to the inflation space of the bag body. The air inlet of the air inlet is connected to one end of the air tube, and the other end of the air tube is located outside the bag body.

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