Air bag and ventilation system

Abstract

The utility model relates to the technical field of vehicle ventilation devices, in particular to a wind bag and a ventilation system. The wind bag comprises a wind bag body, a sealing piece, a connecting pipe and a fastener, the wind bag body and the sealing piece are sequentially arranged in the first direction, the outer edge of the sealing piece is closed, a hollow structure is arranged in the outer edge of the sealing piece, the two ends of the hollow structure are open, and one end of the connecting pipe is located in the hollow structure and fixedly connected with the wind bag body. The other end of the connecting pipe is positioned outside the hollow structure; a cavity is formed in the wind bag body, a first ventilation opening is formed in the side, away from the sealing piece, of the wind bag body, a second ventilation opening is formed in the side, facing the sealing piece, of the wind bag body, and the first ventilation opening, the cavity, the second ventilation opening and the connecting pipe communicate in sequence. The fastener is arranged on the wind bag main body and is used for fixing the wind bag main body on foaming of a seat; the seal is pressed between the wind bag body and the foam of the seat. The utility model can reduce and even avoid the generation of unpleasant odor.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle ventilation devices, in particular to an air bag and a ventilation system. Background Art

[0002] At present, the public generally reports that some vehicles release pungent odors under extreme conditions. One of the root causes of the problem is the extensive use of double-sided tape. The chemicals contained in the glue of double-sided tape are easy to volatilize at high temperatures and produce gases with pungent odors.

[0003] In the prior art, double-sided tape is usually used to connect the air bag and the foam. However, the existing foam used to connect to the air bag is almost completely covered with double-sided tape. The amount of double-sided tape used is large, which is easy to produce gas with a pungent odor and makes the pasting process complicated. It is difficult to accurately align the air bag hole and the foam ventilation hole, which affects the ventilation effect. Utility Model Content

[0004] The technical problem to be solved by the utility model is: to provide a wind bag and a ventilation system in view of the problem that in the prior art, a lot of double-sided adhesives are used when connecting the foam and the wind bag, which easily carries gas with pungent odor.

[0005] In order to solve the above technical problems, on the one hand, the embodiment of the utility model provides an air bag, including an air bag body, a seal, a connecting pipe and a fastener, wherein the air bag body and the seal are arranged in sequence along a first direction, the outer edge of the seal is closed, the inner part of the outer edge of the seal has a hollow structure, the two ends of the hollow structure are open, one end of the connecting pipe is located in the hollow structure and fixedly connected to the air bag body, and the other end of the connecting pipe is located outside the hollow structure;

[0006] The air bag body has a cavity inside, a first vent is provided on a side of the air bag body away from the seal, a second vent is provided on a side of the air bag body facing the seal, and the first vent, the cavity, the second vent and the connecting pipe are connected in sequence;

[0007] The fastener is provided on the air bag body and is used to fix the air bag body on the foam of the seat;

[0008] The seal is squeezed between the air sleeve body and the foam of the seat.

[0009] Optionally, the air bag body is provided with a connecting ear, the connecting ear is provided with a positioning hole, and the fastener is inserted into the positioning hole.

[0010] Optionally, a plurality of the connecting lugs are provided on the airbag body, and the plurality of connecting lugs are spaced apart from each other, and the gap between two adjacent connecting lugs is 20 mm to 150 mm.

[0011] Optionally, a plurality of the second vents and the connecting pipes are provided, and each second vent communicates with one connecting pipe.

[0012] Optionally, the edge of the second vent is spaced from the inner wall of the hollow structure.

[0013] Optionally, the spacing between the edge of the second vent and the inner wall of the hollow structure is greater than or equal to 2 mm.

[0014] Optionally, the seal includes a plurality of frames, and the plurality of frames are sequentially connected to form the seal.

[0015] Optionally, the frame has opposite first and second sides along a second direction, the distance between the first side and the second side is greater than or equal to 5 mm, and the first direction is perpendicular to the second direction.

[0016] Optionally, the airbag further includes a 3D mesh, and the 3D mesh is disposed in the cavity for supporting the airbag body.

[0017] According to the airbag provided by the embodiment of the present invention, a seal and a connecting pipe are arranged on the airbag body to replace the connection between the airbag body and the foam. On the one hand, the airbag body is connected to the foam by the seal. By providing a hollow structure, the contact area between the foam and the seal is reduced. The connecting pipe can be inserted into the air guiding channel of the foam, which can play a certain limiting role on the airbag body. By introducing fasteners, the airbag body can be directly and firmly fixed on the seat foam, and at the same time, the seal can be tightly attached between the airbag body and the foam by the extrusion action of the fasteners. When realizing the fixed connection between the airbag body and the foam, the usage amount of double-sided tape can be reduced, or even the use of double-sided tape can be avoided, and the generation of bad smell (irritating gas) can be reduced or even avoided. At the same time, only the outer edge of the seal is set as a solid structure, which is convenient for the connecting pipe to be aligned and inserted into the air guiding channel of the foam, ensuring the ventilation effect.

[0018] On the other hand, the embodiment of the present invention provides a ventilation system, including a foam and the above-mentioned airbag. The foam is provided with an air guiding channel, the connecting pipe is inserted into the air guiding channel, and the airbag body is fixedly connected to the foam. Description of the Drawings

[0019] Figure 1 is a schematic diagram of a first perspective of an airbag provided by an embodiment of the present invention;

[0020] Figure 2 is a schematic diagram of a wind bag provided by an embodiment of the utility model from a second viewing angle;

[0021] Figure 3 yes Figure 2 Schematic diagram of the section along line AA;

[0022] Figure 4 It is a schematic diagram of a sealing member of an air bag provided in one embodiment of the utility model.

[0023] The reference numerals in the specification are as follows:

[0024] 1. Air bag body; 2. Seal; 3. Connecting pipe; 4. Hollow structure; 5. Cavity; 6. Connecting ear; 7. Positioning hole; 8. 3D grid. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0026] like Figures 1 to 4 As shown, an embodiment of the utility model provides an air bag, comprising an air bag body 1, a seal 2, a connecting pipe 3 and a fastener, wherein the air bag body 1 and the sealing member 2 are sequentially arranged along a first direction, the outer edge of the sealing member 2 is closed, the inner part of the outer edge of the sealing member 2 has a hollow structure 4, both ends of the hollow structure 4 are open, one end of the connecting pipe 3 is located in the hollow structure 4 and is fixedly connected to the air bag body 1, and the other end of the connecting pipe 3 is located outside the hollow structure 4;

[0027] The air bag body 1 has a cavity 5 inside, a first vent is provided on the side of the air bag body 1 facing away from the seal 2, and a second vent is provided on the side of the air bag body 1 facing the seal 2. The first vent, the cavity 5, the second vent and the connecting pipe 3 are connected in sequence.

[0028] The fastener is provided on the airbag main body 1 and is used to fix the airbag main body 1 on the foam of the seat. The seal 2 is squeezed between the airbag main body 1 and the foam of the seat. In this embodiment, the first direction is the thickness direction of the airbag main body 1, and the seal 2 is a sealing foam. Through a carefully designed air flow path (the first vent → the cavity 5 → the second vent → the connecting pipe 3), air can flow smoothly, reducing the air flow resistance and improving the ventilation efficiency. The outer edge of the seal 2 is closed and has a hollow structure 4 inside. This design ensures good sealing at the connection between the airbag main body 1 and the connecting pipe 3. One end of the connecting pipe 3 is located in the hollow structure 4 of the seal 2 and is fixedly connected to the airbag main body 1, and the other end extends outside the hollow structure 4. This design simplifies the assembly process, facilitates the connection between the connecting pipe 3 and the air guiding channel of the foam, and reduces the assembly difficulty. The airbag main body 1 and the seal 2 are arranged in sequence along the first direction, and a firm connection is achieved between them through an appropriate fixing method (such as welding, buckling, bonding, etc.). This connection method ensures the sealing and stability between the airbag main body 1 and the seal 2. The outer edge of the seal 2 has a hollow structure 4 inside, and one end of the connecting pipe 3 is located in this hollow structure 4 and is fixedly connected to the airbag main body 1. This design enables the connecting pipe 3 to be firmly installed on the airbag main body 1 and ensures the smooth flow of air. In this embodiment, by introducing the structures of the seal 2 and the connecting pipe 3, the traditional method of directly bonding the airbag to the foam with double-sided tape is eliminated, significantly reducing the amount of double-sided tape used and reducing the risk of release of harmful substances. The traditional fixing method may rely heavily on double-sided tape to paste the airbag main body 1 and the seal 2 to the seat foam, which is likely to produce irritating odors and also increases the connection difficulty between the airbag and the seat foam. In this embodiment, by introducing the fastener, the airbag main body 1 can be directly and firmly fixed on the seat foam, and at the same time, the squeezing action of the fastener is used to closely fit the seal 2 between the airbag main body 1 and the foam, thus significantly reducing the usage amount of double-sided tape and even avoiding the use of double-sided tape. By squeezing the seal 2 between the airbag body and the foam, the sealing between the airbag and the foam is ensured.

[0029] In one embodiment, a connecting ear 6 is provided on the airbag main body 1, and a positioning hole 7 is provided on the connecting ear 6. The fastener is inserted into the positioning hole 7. By designing the connecting ear 6 and the positioning hole 7 and inserting the fastener into the positioning hole 7, the tightness and stability of the connection are ensured, reducing the failures or safety hazards caused by loose connections. The design of the connecting ear 6 and the positioning hole 7 makes the installation process of the airbag simpler and faster. The staff only needs to align the connecting ear 6 with the corresponding position, then insert the fastener into the positioning hole 7 and tighten it, without complex operations or additional tools. It can reduce the gap between the airbag and the foam, thereby improving the sealing of the entire ventilation system, helping to prevent impurities such as dust and water vapor from entering the ventilation duct and maintaining the cleanliness of the air.

[0030] In one embodiment, a plurality of connecting lugs 6 are provided on the airbag body 1. The plurality of connecting lugs 6 are spaced from each other, and the gap between two adjacent connecting lugs 6 is 20 mm to 150 mm. The provision of the plurality of connecting lugs 6 enables the airbag body 1 to be stressed more evenly during connection, avoiding damage that may be caused by excessive single-point stress. This design of dispersing stress improves the overall structural stability of the airbag. The reasonable spacing distance helps to reduce the deformation of the airbag body 1 under the action of wind force, maintaining the stability and integrity of its shape. The spacing design of the plurality of connecting lugs 6 enables the airbag to be flexibly arranged according to specific requirements during installation to adapt to different installation environments and conditions. For example, the specific gap between two adjacent connecting lugs 6 can be set according to the density and air permeability of the sealing foam. The positioning gap can be increased when the density is large and the air permeability is low, and vice versa.

[0031] In one embodiment, the number of second ventilation openings and connecting pipes 3 are both provided in plurality, and each second ventilation opening communicates with one connecting pipe 3. The plurality of second ventilation openings and the corresponding connecting pipes 3 can distribute the air flow more evenly, reducing the uneven distribution of the air flow inside the airbag, thereby improving the ventilation efficiency. The design of the plurality of second ventilation openings and connecting pipes 3 provides more layout flexibility and can be adjusted according to specific ventilation requirements to adapt to different ventilation system configurations. If a certain second ventilation opening or connecting pipe 3 has a problem, it can be maintained or replaced individually without affecting the entire system, which reduces the maintenance cost and improves the reliability of the system. In addition, the design of the plurality of second ventilation openings and connecting pipes 3 helps to disperse the air flow, reducing the pressure fluctuations in the system, thereby improving the stability of the entire ventilation system.

[0032] In one embodiment, the edge of the second ventilation opening is spaced from the inner wall of the hollow structure 4.

[0033] In one embodiment, the spacing between the edge of the second ventilation opening and the inner wall of the hollow structure 4 is greater than or equal to 2 mm. This design provides a certain operating space for installation and maintenance, making the connection between the connecting pipe 3 and the second ventilation opening more convenient. It can reduce the friction and wear between the edge of the ventilation opening and the inner wall of the hollow structure 4, thereby extending the service life of the airbag. By ensuring an appropriate distance between the second ventilation opening and the inner wall of the hollow structure 4, the flow path of the air flow can be optimized, reducing eddy currents and the resistance of air flow, thereby improving the overall ventilation efficiency.

[0034] In one embodiment, the seal 2 includes a plurality of frames, and the plurality of frames are connected in sequence to form the seal 2. The seal 2 of the convex structure can better fit the connection surface and provide a tighter seal. The seal 2 formed by the plurality of frames connected in sequence increases the integrity and stability of the structure, so that the seal 2 is not easily deformed when subjected to external pressure. By using the method of connecting a plurality of frames in sequence, the length of the seal 2 can be customized according to actual needs, thereby reducing the waste of materials. The plurality of frames can be integrally formed to form the seal 2, or they can be fixedly connected in sequence to form the seal 2. In the present embodiment, the seal 2 is in the shape of a "convex" character, and in other embodiments, the seal 2 is in other shapes such as a rectangle, a triangle, etc.

[0035] In one embodiment, the frame has a first side surface and a second side surface relative to each other along the second direction, the distance between the first side surface and the second side surface is greater than or equal to 5 mm, and the first direction is perpendicular to the second direction. In this embodiment, the second direction can be the width direction or the length direction of the air bag body, the distance between the first side surface and the second side surface is the value of the width of the frame, and the design of the distance between the two side surfaces helps to cooperate with the seal 2, ensure the sealing between the air bag and the connecting pipe 3, prevent air leakage, ensure the efficiency of the ventilation system, and at the same time, increase the lateral strength of the air bag, so that the air bag is more stable when subjected to wind pressure or other external forces, and improve the overall durability. In other embodiments, a mounting hole is provided on the frame, a connecting pipe 3 is provided in the mounting hole, and the distance between the edge of the mounting hole and the inner edge and the outer edge of the frame is greater than or equal to 5 mm.

[0036] In one embodiment, the air bag further includes a 3D grid 8, which is disposed in the cavity 5 and is used to support the air bag body 1. In this embodiment, the 3D grid 8 can better guide the air flow, so that it is more evenly distributed inside the air bag, thereby providing a softer and more balanced air supply effect. The 3D grid 8 helps to disperse the airflow and reduce the noise generated by the airflow directly impacting the inner wall of the air bag, thereby reducing the overall operating noise. At the same time, the 3D grid 8 can provide additional support for the cavity 5 of the air bag, enhance the stability and durability of the overall structure, and extend the service life of the air bag.

[0037] According to the airbag provided by the embodiment of the present utility model, a seal 2 and a connecting pipe 3 are provided on the airbag main body 1, replacing the connection between the airbag main body 1 and the foam. On the one hand, the airbag main body 1 is connected to the foam by connecting the seal 2 to the foam. By providing a hollow structure 4, the contact area between the foam and the seal 2 is reduced. The connecting pipe 3 can be inserted into the air guiding channel of the foam, which can play a certain limiting role on the airbag main body 1. By introducing fasteners, the airbag main body 1 can be directly and firmly fixed on the seat foam, and at the same time, the seal 2 is tightly fitted between the airbag main body 1 and the foam by the extrusion action of the fasteners. When realizing the fixed connection between the airbag main body 1 and the foam, the usage amount of double-sided tape can be reduced, or even the use of double-sided tape can be avoided, reducing or even avoiding the generation of bad odors (gases with pungent odors). At the same time, only the outer edge of the seal 2 is set as a solid structure, which is convenient for the connecting pipe 3 to be aligned and inserted into the air guiding channel of the foam, ensuring the ventilation effect.

[0038] In addition, an embodiment of the present utility model provides a ventilation system, including a foam and the airbag of the above embodiment. An air guiding channel is provided in the foam, and the connecting pipe 3 is inserted into the air guiding channel. The airbag main body 1 is fixedly connected to the foam. In this embodiment, by fixedly connecting the airbag main body 1 to the foam and inserting the connecting pipe 3 into the air guiding channel in the foam, a stable connection structure is formed, which helps to ensure the stability and reliability of the airbag during use.

[0039] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. An air bag, characterized in that, The air bag body comprises a air bag main body, a seal, a connecting pipe and a fastener, wherein the air bag main body and the seal are arranged in sequence along a first direction, the outer edge of the seal is closed, the inner part of the outer edge of the seal has a hollow structure, both ends of the hollow structure are open, one end of the connecting pipe is located in the hollow structure and fixedly connected to the air bag main body, and the other end of the connecting pipe is located outside the hollow structure; The air bag body has a cavity inside, a first vent is provided on a side of the air bag body away from the seal, a second vent is provided on a side of the air bag body facing the seal, and the first vent, the cavity, the second vent and the connecting pipe are connected in sequence; The fastener is provided on the air bag body and is used to fix the air bag body on the foam of the seat; The seal is squeezed between the air sleeve body and the foam of the seat.

2. The wind bag according to claim 1, characterized in that, The air bag body is provided with a connecting ear, the connecting ear is provided with a positioning hole, and the fastener is inserted into the positioning hole.

3. The air bag according to claim 2, characterized in that, The air bag body is provided with a plurality of connecting ears, the plurality of connecting ears are spaced apart from each other, and a gap between two adjacent connecting ears is 20 mm to 150 mm.

4. The air bag according to claim 1, characterized in that A plurality of the second vents and the connecting pipes are provided, and each of the second vents is connected to one of the connecting pipes.

5. The air bag according to claim 1, characterized in that, The edge of the second vent is spaced apart from the inner wall of the hollow structure.

6. The air bag according to claim 5, characterized in that, The distance between the edge of the second vent and the inner wall of the hollow structure is greater than or equal to 2 mm.

7. The air bag according to claim 1, characterized in that, The sealing member includes a plurality of frames, and the plurality of frames are sequentially connected to form the sealing member.

8. The air bag according to claim 7, characterized in that, The frame has a first side surface and a second side surface opposite to each other along a second direction, a distance between the first side surface and the second side surface is greater than or equal to 5 mm, and the first direction is perpendicular to the second direction.

9. The wind bag according to claim 1, characterized in that, The wind bag further includes a 3D grid, which is arranged in the cavity and is used to support the wind bag body.

10. A ventilation system, characterized in that, It comprises a seat, foam and the air bag according to any one of claims 1 to 9, wherein the foam is arranged on the seat, an air guide channel is arranged in the foam, the connecting pipe is inserted in the air guide channel, and the air bag body is fixedly connected to the foam.

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