An overhead airbag and vehicle

Abstract

This application provides a roof-mounted airbag and a vehicle. The roof-mounted airbag includes a shell, an air bag, a gas generator, and a guide tube. The air bag is disposed inside the shell; the gas generator is disposed outside the shell and the air bag; the guide tube connects the gas generator and the air bag to guide the gas generated by the gas generator to the air bag. This application enables an effective reduction in the thickness of the roof-mounted airbag without affecting its deployment performance.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more particularly to an overhead airbag and vehicle. Background Technology

[0002] Currently, in the event of a frontal collision, overhead airbags are used to protect the head and chest of vehicle occupants. These airbags are located in the roof above the sun visor and consist of an airbag and a gas generator. The gas generator is detonated to inflate the airbag, causing it to deploy and protect the occupant's head and chest. However, in some related technologies, the airbag encloses the gas generator, which is relatively large, resulting in a thicker overall airbag and potentially affecting headroom and forward visibility for the occupants. Utility Model Content

[0003] This application provides a roof-mounted airbag and vehicle that can effectively reduce the thickness of the roof-mounted airbag without affecting its deployment performance.

[0004] The technical solution of this application is implemented as follows:

[0005] The first aspect of this application provides an overhead airbag for a vehicle, comprising:

[0006] case;

[0007] An air bag is disposed within the housing;

[0008] A gas generator is disposed outside the housing and the gas bag;

[0009] A guide tube connects the gas generator and the gas bag to direct the gas generated by the gas generator to the gas bag.

[0010] In some embodiments, the guide tube is provided with a guide channel and an outlet, the guide channel is connected to the gas generator, and the outlet is connected to the guide channel and the gas bag;

[0011] The air outlet penetrates the inner wall of the guide channel; or, the air outlet is located at the end of the guide tube away from the gas generator.

[0012] In some embodiments, the gas bag covers at least a portion of the outer periphery of the guide tube; and / or, the guide tube is welded or snapped to the gas generator.

[0013] In some embodiments, the top-mounted airbag includes at least one first clamp, which is disposed outside the housing and is fitted onto the junction of the airbag and the guide tube to secure the airbag and the guide tube.

[0014] In some embodiments, the gas generator extends along a first direction;

[0015] The guide tube is a straight tube, and the extension direction of the straight tube intersects the first direction; or, the guide tube includes a first sub-segment, a turning segment, and a second sub-segment, the first sub-segment is connected to the gas generator and extends along the second direction, the turning segment connects the first sub-segment and the second sub-segment, at least a portion of the second sub-segment is located inside the gas bag, and the extension direction of the second sub-segment intersects the second direction, wherein the first direction intersects the top and bottom directions, and the second direction intersects the first direction.

[0016] In some embodiments, the overhead airbag includes a bracket and at least one connector, the bracket being disposed outside the housing and the airbag, the gas generator being connected to the bracket, and the connector connecting the bracket to the vehicle body.

[0017] In some embodiments, at least one end of the support extends beyond the gas generator along its extension direction, and the connector is connected to the portion of the support that extends beyond the gas generator;

[0018] And / or, the overhead airbag includes at least one second clamp, which is fitted over the bracket and the gas generator to connect the bracket and the gas generator.

[0019] In some embodiments, the overhead airbag includes fasteners and hooks, the hooks protruding from the top wall of the housing for attaching to the vehicle body, and the fasteners connecting the housing to the vehicle body;

[0020] The number of fasteners is multiple, with at least two fasteners located on opposite sides of the housing along a first direction. The top wall of the housing has at least one pre-tightening platform, which is located between the two fasteners and on the side of the hook facing the fasteners along a second direction. The first direction, the second direction, and the top and bottom directions are perpendicular to each other.

[0021] In some embodiments, the housing includes an upper shell and a lower shell, the lower shell being disposed on the bottom side of the upper shell, and the top-mounted airbag includes fasteners that connect the upper shell and the lower shell.

[0022] In some embodiments, the housing further includes a first guide flange connected to the upper housing and extending downward at an angle from the connection with the upper housing to guide the deployment of the air bag;

[0023] And / or, the housing further includes a second guide flange connected to the lower housing and extending downwardly from the connection with the lower housing to guide the deployment of the air bag.

[0024] A second aspect of this application provides a vehicle including a body and a roof-mounted airbag as described in any embodiment of this application. The body includes a roof crossbeam, and the housing and the gas generator are respectively connected to the roof crossbeam.

[0025] The overhead airbag provided in this application embodiment has a gas generator independently arranged outside the airbag and shell, and the gas generator is connected to the airbag via a guide tube. This reduces the thickness dimension of the overhead airbag, optimizes its layout space, and avoids the phenomenon in related technologies where enclosing the gas generator inside the airbag increases the airbag thickness and affects the driver's field of vision. The guide tube allows for flexible placement of the gas generator, ensuring effective gas supply to the airbag even when it is far away from it. It also facilitates maintenance and replacement of the gas generator. Furthermore, it eliminates the need to change the airbag's position, allowing for easy folding of the airbag within the shell. The guide tube isolates some gas impact, protecting the airbag while guiding gas into it, ensuring its deployment performance. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a top-mounted airbag provided in one embodiment of this application;

[0027] Figure 2 This is a schematic diagram of the cooperation between a gas generator and a guide pipe according to an embodiment of this application;

[0028] Figure 3 This is a schematic diagram of the cooperation between the roof-mounted airbag and the roof crossbeam of the vehicle body according to an embodiment of this application;

[0029] Figure 4 yes Figure 3 Cross-sectional view along the BB direction;

[0030] Figure 5 yes Figure 3 A cross-sectional view along the CC direction;

[0031] Figure 6 for Figure 3 A schematic diagram of the structure of the roof crossbeam of the vehicle body.

[0032] Figure label:

[0033] 100-Top-mounted airbag; 10-Shell; 101-Upper shell; 102-Lower shell; 103-First guide flange; 104-Second guide flange; 11-Hook; 12-Pre-tightening table; 20-Air bag; 30-Gas generator; 40-Guide pipe; 40a-Air outlet; 41-First sub-section; 42-Turning section; 43-Second sub-section; 50-First clamp; 60-Second clamp; 70-Bracket; 80-Connector; 90-Fastener; 200-Roof crossbeam; 200a-Hanging slot; 200b-Connecting hole; 200c-Mounting hole. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings. The described embodiments should not be regarded as limitations on this application. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0035] Please see Figures 1 to 6 The first aspect of this application provides a top-mounted airbag 100 for use in a vehicle.

[0036] For example, the overhead airbag 100 is located above the sun visor and is positioned inside the headliner of the driver or passenger side. During a collision, the overhead airbag 100 rapidly inflates to form a buffer zone, protecting the occupant's head and chest to reduce the direct impact between the occupant and the vehicle's interior structure, thereby reducing the risk of injury.

[0037] The overhead airbag 100 includes a shell 10, an air bag 20, a gas generator 30, and a flow tube 40.

[0038] For example, the vehicle includes a body, and the body includes a roof crossbeam 200. See [link to relevant documentation]. Figure 3 and Figure 6 The housing 10 is connected to the roof crossbeam 200 of the vehicle body.

[0039] It is understood that the roof crossbeam 200 refers to the lateral support structure located on the roof of the vehicle, and is an important component of the vehicle body frame. The roof crossbeam 200 increases the structural strength and rigidity of the roof, improving vehicle safety. The roof is a layer of material covering the inside of the vehicle roof, forming the ceiling of the vehicle interior. Exemplarily, the roof can be installed on the roof crossbeam 200 using adhesives or screws.

[0040] The housing 10 is connected to the roof crossbeam 200 of the vehicle body, that is, the roof airbag 100 can be connected to the roof crossbeam 200 of the vehicle body through the housing 10, which increases the installation stability of the roof airbag 100 and makes the roof airbag 100 less likely to loosen or shift.

[0041] The air bag 20 is disposed inside the housing 10.

[0042] The housing 10 provides installation and protection space for the airbag 20. The airbag 20 can be folded and sealed within the housing 10 for rapid release. The airbag 20 has a certain degree of permeability and strength to control the gas leakage rate and maintain cushioning performance. The airbag 20 absorbs and disperses the kinetic energy of the occupant's body through the friction of its surface material and the compression of the internal gas, thereby reducing the degree of injury. After the protective effect is completed, the gas inside the airbag 20 will gradually be discharged from the small holes on its surface to allow the occupant to leave the vehicle.

[0043] For example, the air bag 20 is made of high-strength nylon or polyester fiber and is treated with a special coating to ensure sealing and heat resistance.

[0044] Understandably, the housing 10 can also provide a guiding path for the deployment of the airbag 20, so that the airbag 20 can quickly pop out in a predetermined direction after inflation.

[0045] Please see Figure 1 The gas generator 30 is located outside the housing 10 and the gas bag 20.

[0046] The gas generator 30 is used to inflate the airbag 20 upon triggering, thereby filling the airbag 20. For example, when a vehicle is involved in a collision, the on-board sensors can detect the collision and transmit a signal to the gas generator 30. Upon receiving the signal, the gas generator 30 initiates a chemical reaction or releases compressed gas to rapidly generate a large amount of harmless gas, thereby filling the airbag 20 in a very short time.

[0047] The type of gas generator 30 is not limited. It can be a pyrotechnic gas generator, which generates high-temperature and high-pressure gas by igniting solid fuel; it can also be a gas storage generator, which is pre-filled with high-pressure inert gas and released through a valve when needed; or it can be a mixing gas generator, which uses a small amount of solid fuel to heat the compressed gas stored in the container to increase gas production and reduce byproducts.

[0048] The gas generator 30 is located outside the housing 10 and the air bag 20. This means that the gas generator 30 is independently arranged in the space outside the air bag 20 and the housing 10. The gas generator 30 is not directly installed inside the housing 10 or the air bag 20. That is, in the top-mounted airbag 100 of this application embodiment, the gas generator 30 is not wrapped inside the air bag 20 and is located inside the housing 10.

[0049] In this way, on the one hand, the layout and size of the roof airbag 100 can be optimized. The gas generator 30 is located outside the housing 10 and the air bag 20, without needing to be wrapped inside the air bag 20 and then placed inside the housing 10. This reduces the size of the roof airbag 100 along the thickness direction, reducing the impact on the occupant's head space and the forward visibility of the vehicle. The gas generator 30 can be independently placed near or away from the housing 10, which means that the position and layout of the gas generator 30 can be flexibly adjusted according to the vehicle model requirements. Moreover, the gas generator 30 can be independently installed to other structures such as the roof crossbeam 200 of the vehicle body, which has high installation flexibility and reliability. At the same time, the gas generator 30 can be inspected and replaced without disassembling the housing 10 and the air bag 20. On the other hand, the air bag 20 can have more arrangement space, which is convenient for folding and arrangement, so that the air bag 20 can be deployed more effectively.

[0050] It is understandable that the thickness direction of the top airbag 100 is consistent with the top and bottom direction.

[0051] The guide tube 40 connects the gas generator 30 and the gas bag 20 to guide the gas generated by the gas generator 30 to the gas bag 20.

[0052] That is, the gas bag 20 and the gas generator 30 are connected through the guide pipe 40, and the gas generated by the gas generator 30 flows to the gas bag 20 through the guide pipe 40.

[0053] It is understandable that when the gas generator 30 is located outside the housing 10 and the gas bag 20, if part of the gas bag extends out of the housing and is directly connected to the gas generator, on the one hand, the high temperature and high pressure gas generated when the gas generator is started is likely to cause impact damage to the gas bag, resulting in damage to the gas bag, or the gas bag may not be able to unfold in the preset direction and shape; on the other hand, it is also impossible to achieve the flexibility of the gas generator's installation position.

[0054] In this embodiment, the guide tube 40 withstands the gas impact, thus protecting the air bag 20. Simultaneously, the guide tube 40 also serves as a guide, facilitating the deployment of the air bag 20 in a preset direction. The shape and size of the guide tube 40 are not limited and can be configured according to the location of the gas generator 30 and the deployment direction of the air bag 20.

[0055] The overhead airbag 100 provided in this embodiment has a gas generator 30 independently arranged outside the air bag 20 and the housing 10, and the gas generator 30 is connected to the air bag 20 through a guide tube 40. This reduces the thickness dimension of the overhead airbag 100, optimizes the layout space of the overhead airbag 100, and reduces the phenomenon in related technologies where enclosing the gas generator inside the air bag increases the thickness of the overhead airbag and affects the visibility inside the vehicle. The guide tube 40 allows for flexible placement of the gas generator 30, ensuring that it can still effectively supply air to the air bag 20 even when it is far away from the air bag 20. It also facilitates maintenance and replacement of the gas generator 30. Furthermore, the position of the air bag 20 does not need to be changed, facilitating the folding arrangement of the air bag 20 within the housing 10. The guide tube 40 can isolate a certain amount of gas impact, protecting the air bag 20, while guiding gas into the air bag 20 to ensure the deployment performance of the air bag 20.

[0056] In some embodiments, the guide tube 40 is provided with a guide channel and an outlet 40a that are interconnected. The guide channel is connected to the gas generator 30, and the outlet 40a is connected to the guide channel and the gas bag 20.

[0057] That is, the gas generated by the gas generator 30 flows to the gas bag 20 through the guide channel and the gas outlet 40a.

[0058] The number of air outlets 40a can be one or more. The air outlets 40a can be set according to the required unfolding direction of the air bag 20 to precisely control the gas flow direction so that the air bag 20 unfolds in a preset direction and shape.

[0059] In some embodiments, the air outlet 40a penetrates the outer peripheral wall of the guide channel, that is, the air outlet 40a is located in the circumference of the guide tube 40. This facilitates shortening the airflow path and adapts to the deployment requirements of the air bag 20.

[0060] With the end of the guide tube 40 connected to the gas generator 30 as the starting end and the end of the guide tube 40 away from the gas generator 30 as the tail end, in this embodiment, the space between the starting end and the tail end of the guide tube 40 is a guide channel. In this embodiment, the gas outlet 40a is located in the circumference of the guide tube 40, that is, the tail end of the guide tube 40 is a blind end and the tail end of the guide tube 40 is in a closed state. The guide tube 40 does not emit gas from the tail end, but disperses gas outward in the circumferential direction through the circumferential gas outlet 40a.

[0061] In some embodiments, the air outlet 40a is located at the end of the guide tube 40 furthest from the gas generator 30. That is, in this embodiment, the tail end of the guide tube 40 can be open, thus increasing the air output per unit time to meet the deployment requirements. In some embodiments, there are multiple air outlets 40a. The arrangement of multiple air outlets 40a enables multi-point air output, which helps the air bag 20 to inflate more evenly and quickly.

[0062] Multiple air outlets 40a can all penetrate the outer peripheral wall of the guide channel, or some air outlets 40a can be located at the end of the guide pipe 40 away from the gas generator 30, and the other air outlets 40a can be located around the guide pipe 40, or all air outlets 40a can be located at the end of the guide pipe 40 away from the gas generator 30. There are no restrictions here.

[0063] For example, please refer to Figure 2 Multiple air outlets 40a penetrate the outer peripheral wall of the guide channel and are distributed along the circumference of the guide pipe 40.

[0064] In this embodiment, multiple air outlets 40a are distributed circumferentially along the guide tube 40, which facilitates the entry of gas into the air bag 20 from different directions, so that the air bag 20 is inflated more evenly and the occurrence of local incomplete expansion is reduced. At the same time, the distribution of air outlets 40a along the circumferential direction of the guide tube 40 can also reduce the gas flow path and facilitate the arrangement of more air outlets 40a. The circumferentially distributed air outlets 40a can also better adapt to the expansion requirements, so that the air bag 20 can be quickly expanded according to the predetermined shape.

[0065] In some embodiments, the air bag 20 covers at least a portion of the outer periphery of the guide tube 40. That is, at least a portion of the guide channel and the air outlet 40a are located inside the air bag 20.

[0066] At least a portion of the flow channel and the air outlet 40a are located inside the air bag 20, that is, the air bag 20 can cover at least a portion of the flow channel 40, and the gas discharged from the air outlet 40a can directly enter the air bag 20, preventing gas leakage and improving inflation efficiency.

[0067] At least a portion of the outer periphery of the guide tube 40 is located inside the air bag 20. On the one hand, this reduces the chance of air leakage, and on the other hand, it also reduces the gas flow distance, allowing the gas to fill the entire air bag 20 more quickly and reducing the delay time.

[0068] The flow guide tube 40 may be partially or completely located inside the air bag 20; there is no restriction on this.

[0069] For example, in some embodiments, the air bag 20 covers the entire outer periphery of the guide tube 40. This ensures the airtightness of the air bag 20 during inflation, facilitates the arrangement of air outlets 40a in the circumference of the guide tube 40, shortens the gas transmission distance, and also makes the structure of the top-mounted airbag 100 more compact.

[0070] In this embodiment, the distance between the air bag 20 and the gas generator 30 can be relatively short.

[0071] For example, the air bag 20 may cover the flow tube 40 with a flow guide plate. Here, the air bag 20 includes a flow guide plate disposed inside the air bag 20 to optimize the flow of gas within the air bag 20, ensuring that the air bag 20 can be inflated more evenly and quickly, and maintain a stable shape after inflation.

[0072] The connection method between the guide tube 40 and the gas generator 30 is not limited.

[0073] In some embodiments, the flow guide 40 is welded to the gas generator 30.

[0074] Welding is a technique that fuses two materials together by heating. Welding can include resistance welding, laser welding, and others.

[0075] In this embodiment, the guide tube 40 is welded to the gas generator 30, which enables the guide tube 40 and the gas generator 30 to be firmly connected together. The guide tube 40 and the gas generator 30 will not easily separate, which has high stability and good airtightness. It is easy to withstand the impact of high pressure gas and prevent gas leakage, thereby improving the inflation performance of the air bag 20.

[0076] In other embodiments, the guide tube 40 is snapped into the gas generator 30.

[0077] The snap-fit ​​refers to the use of a mechanical structure to fix the guide tube 40 and the gas generator 30 together.

[0078] In this embodiment, the guide tube 40 is snapped into the gas generator 30, which can ensure airtightness while facilitating disassembly and assembly, so as to facilitate the maintenance and replacement of the gas generator 30 and the guide tube 40 respectively, thereby increasing the ease of operation.

[0079] The connection method between the air bag 20 and the guide tube 40 is not limited.

[0080] In some embodiments, please refer to Figure 1 and Figure 3 The top-mounted airbag 100 includes at least one first clamp 50, which is disposed on the outside of the housing 10 and is fitted onto the joint of the airbag 20 and the guide tube 40 to fix the airbag 20 and the guide tube 40.

[0081] In this embodiment, the airbag 20 and the guide tube 40 are fixed together by the first clamp 50. The first clamp 50 can provide a fastening force, so that the connection between the airbag 20 and the guide tube 40 is tightly fitted. This can effectively reduce the probability of air leakage caused by the separation or loosening of the airbag and the guide tube due to vehicle vibration or other external forces, and reduce the risk of functional failure of the overhead airbag 100. The airbag 20 can be deployed quickly and effectively in the event of an accident. At the same time, the first clamp 50 has a simple structure, is easy to operate and inspect and maintain, and can adapt to the needs of different airbags 20 and guide tubes 40.

[0082] The number of the first clamp 50 can be one or more, and there is no restriction here.

[0083] In some embodiments, the gas generator 30 extends along a first direction, which intersects with the top-bottom direction.

[0084] That is, the extension direction of the gas generator 30 forms an angle with the top and bottom direction. Here, the angle can be an acute angle, a right angle, or an obtuse angle. For example, the first direction is perpendicular to the top and bottom direction. In this way, the space occupied by the gas generator 30 in the top and bottom direction can be reduced, thereby reducing the overall size of the top airbag 100 along the top and bottom direction and reducing the overall thickness of the top airbag 100.

[0085] The first direction can be parallel to the left-right direction of the vehicle or parallel to the front-back direction of the vehicle. There is no limitation here. For example, the first direction is parallel to the left-right direction of the vehicle, and the gas generator 30 is located on the front side of the gas bag 20.

[0086] In some embodiments, the guide tube 40 is a straight tube, and the extension direction of the straight tube intersects with the first direction.

[0087] That is, the guide tube 40 has no bends and extends in a straight line. In this embodiment, it is easy to place the guide tube 40 and the gas generator 30 on the same side of the gas bag 20 and the housing 10, and it is also easy to reduce the size of the guide tube 40 when the gas generator 30 is close to the gas bag 20, thereby increasing the compactness of the layout.

[0088] Here, the extension direction of the guide tube 40 can be perpendicular to the first direction or set at an acute angle.

[0089] In other embodiments, please refer to Figure 2 The guide tube 40 includes a first sub-segment 41, a turning segment 42, and a second sub-segment 43. The first sub-segment 41 is connected to the gas generator 30 and extends along a second direction. The turning segment 42 connects the first sub-segment 41 and the second sub-segment 43. At least a portion of the second sub-segment 43 is located inside the gas bag 20, and the extension direction of the second sub-segment 43 intersects with the second direction.

[0090] In this embodiment, the guide tube 40 has a bent portion, and the extension direction of the first sub-segment 41 is different from that of the second sub-segment 43. This makes it easier to place the second sub-segment 43 and the gas generator 30 on different sides of the air bag 20 and the shell 10, optimize the layout, reduce the overall size of the top airbag 100, and at the same time, the design of the bend section 42 changes the airflow direction, so that the gas flow direction can make the air bag 20 unfold in a preset direction, ensuring the unfolding performance of the air bag 20.

[0091] For example, the space within the first sub-segment 41, the second sub-segment 43, and the turning segment 42 defines a flow channel, and the air outlet 40a may be located circumferentially on the side of the second sub-segment 43 away from the turning segment 42.

[0092] At least a portion of the second sub-section 43 is located inside the air bag 20, or the entire second sub-section 43 may be located inside the air bag 20. In this case, the first clamp 50 may be engaged at the connection between the second sub-section 43 and the turning section 42 to connect the air bag 20 and the guide pipe 40.

[0093] The second direction can be any direction. For example, the second direction is perpendicular to the first direction. When the first direction is left-right, the second direction is front-back. The extension direction of the second sub-segment 43 can be parallel to or intersect with the extension direction of the gas generator 30. There is no limitation here.

[0094] The installation method of the gas generator 30 is not limited.

[0095] In some embodiments, please refer to Figure 1 and Figure 3 The overhead airbag 100 includes a bracket 70 and at least one connector 80. The bracket 70 is disposed outside the housing 10 and the airbag 20. A gas generator 30 is connected to the bracket 70. The connector 80 connects the bracket 70 to the vehicle body. For example, the connector 80 connects the bracket 70 to the vehicle body roof beam 200.

[0096] In this embodiment, the bracket 70 serves as a connecting bridge between the gas generator 30 and the vehicle roof crossbeam 200, and the connector 80 connects the bracket 70 to the vehicle roof crossbeam 200, thereby achieving the connection between the gas generator 30 and the vehicle roof crossbeam 200. This ensures the connection stability of the gas generator 30 and reduces damage to it, preventing it from loosening due to vibration or other external forces during vehicle operation. Furthermore, the bracket 70 allows the gas generator 30 to be connected to the vehicle roof crossbeam 200 without going through the housing 10, facilitating the flexible arrangement of the gas generator 30.

[0097] The bracket 70 is located outside the housing 10 and the air bag 20, which facilitates the installation of the gas generator 30 and reduces damage to the housing 10 and the air bag 20. The gas generator 30 can obtain support from the vehicle roof crossbeam 200 through the bracket 70, without the need for support from the housing 10, thus reducing the pressure on the housing 10.

[0098] The number of connectors 80 can be one or more; for example, please refer to [link to example]. Figure 1 and Figure 3 There are two connectors 80, which are located on opposite sides of the bracket 70 along the first direction.

[0099] The specific construction of the connector 80 is not limited; it can be a screw, or a combination of a bolt and a nut. For example, the connector 80 includes a bolt and a nut, the nut being a projection-welded nut formed on the vehicle roof crossbeam 200, with the bolt passing through the bracket 70 and connected to the projection-welded nut.

[0100] For example, please refer to Figure 6 A connecting hole 200b may be provided on the roof crossbeam 200 of the vehicle body. The connector 80 passes through the bracket 70 and the connecting hole 200b to connect the bracket 70 and the roof crossbeam 200 of the vehicle body.

[0101] In some embodiments, please refer to Figure 1 At least one end of the bracket 70 extends beyond the gas generator 30 along the extension direction, and the connector 80 is connected to the portion of the bracket 70 that extends beyond the gas generator 30.

[0102] In an embodiment where the gas generator 30 extends along a first direction, at least one end of the support 70 extends beyond the gas generator 30 along the first direction.

[0103] In this embodiment, the connector 80 is connected to the part of the bracket 70 that extends beyond the gas generator 30, which can effectively reduce the probability of interference with the gas generator 30 during installation, making disassembly and assembly more convenient and not affecting components such as the air bag 20. At the same time, it can also better distribute the force to the roof crossbeam 200 of the vehicle body, increasing the installation stability of the gas generator 30.

[0104] The connection method between the gas generator 30 and the bracket 70 is not limited.

[0105] In some embodiments, please refer to Figure 1 and Figure 3 The overhead airbag 100 includes at least one second clamp 60, which is sleeved on the bracket 70 and the gas generator 30 to connect the bracket 70 and the gas generator 30.

[0106] In this embodiment, the bracket 70 and the gas generator 30 are connected together by a second clamp 60. The second clamp 60 provides a tightening force, ensuring a tight fit between the gas generator 30 and the bracket 70. This effectively reduces the likelihood of separation or loosening of the bracket 70 and the gas generator 30 due to vehicle vibration or other external forces, facilitating the stable installation of the gas generator 30 on the vehicle's roof crossbeam 200. Furthermore, the second clamp 60 has a simple structure, is easy to operate and inspect, and will not damage the gas generator 30.

[0107] The number of second clamps 60 can be one or more, and there is no restriction here.

[0108] The method by which the housing 10 is connected to the roof crossbeam 200 is not limited.

[0109] In some embodiments, please refer to Figure 1 and Figure 2 The overhead airbag 100 includes at least one fastener 90 that connects the housing 10 to the vehicle body. Exemplarily, the fastener 90 is used to connect the housing 10 to the vehicle body roof crossbeam 200.

[0110] In this embodiment, the housing 10 is connected to the vehicle roof crossbeam 200 by fastener 90, which can increase the installation stability of the housing 10 and make the airbag 20 deploy stably in a predetermined direction.

[0111] For example, please refer to Figure 6 Mounting holes 200c can be provided on the roof crossbeam 200 of the vehicle body. Fasteners 90 pass through the housing 10 and the mounting holes 200c to connect the housing 10 and the roof crossbeam 200 of the vehicle body.

[0112] The number of fasteners 90 can be one or more, and there is no limitation here. For example, please refer to [link to example]. Figure 1 and Figure 3 The number of fasteners 90 is two, and the two fasteners 90 are disposed on opposite sides of the housing 10 along the first direction.

[0113] The specific construction of the fastener 90 is not limited; it can be a screw, or a combination of a bolt and a nut. For example, the fastener 90 includes a bolt and a nut, the nut being formed as a projection-welded nut, which is formed on the vehicle roof crossbeam 200, and the bolt passes through the housing 10 and connects to the projection-welded nut.

[0114] In some embodiments, please refer to Figure 1 , Figure 5 and Figure 6 The overhead airbag 100 also includes at least one hook 11, which protrudes from the top wall of the housing 10 for attaching to the vehicle body. Exemplarily, the hook is used to attach to the attachment slot 200a of the vehicle body roof crossbeam 200.

[0115] In this embodiment, the hook 11 allows the housing 10 to be pre-hung on the mounting slot 200a of the roof crossbeam 200 before the fastener 90 is connected to the roof crossbeam 200, thus positioning and initially fixing the housing 10. The fastener 90 is then used for final fixing, increasing installation stability. The cooperation between the hook 11 and the mounting slot 200a greatly simplifies the installation process and improves assembly efficiency.

[0116] The number of hooks 11 can be one or more, and there is no limitation here. For an example, please refer to... Figure 1There are two hooks 11, which are spaced apart along the first direction. The number of hook slots 200a corresponds one-to-one with the number of hooks 11.

[0117] In some embodiments, please refer to Figure 1 The number of fasteners 90 is multiple, of which at least two fasteners 90 are located on opposite sides of the housing 10 along the first direction. The top wall of the housing 10 has at least one pre-tightening platform 12, which is located between the two fasteners 90 and on the side of the hook 11 facing the fasteners 90 along the second direction. The first direction, the second direction and the top and bottom directions are perpendicular to each other.

[0118] The pre-tightening platform 12 is located within the space enclosed by the hook 11 and the fastener 90. This allows for better clamping during the fastening operation of the fastener 90, stabilizes the position of the housing 10, and ensures that the pressure is evenly distributed on the fastener 90.

[0119] The number of pre-tightening tables 12 can be one or more, for example, see [link to example]. Figure 1 There are two pre-tightening tables 12, which are spaced apart along the first direction.

[0120] The specific structure of the shell 10 is not limited.

[0121] In some embodiments, please refer to Figure 1 and Figure 4 The housing 10 includes an upper housing 101 and a lower housing 102. The lower housing 102 is disposed on the bottom side of the upper housing 101, and the fastener 90 connects the upper housing 101 and the lower housing 102.

[0122] In this embodiment, the fastener 90 is used not only to connect the housing 10 to the roof crossbeam 200, but also to connect the upper housing 101 and the lower housing 102 together, that is, the fastener 90 connects the upper housing 101, the lower housing 102 and the roof crossbeam 200. In this way, the upper housing 101 and the lower housing 102 can be fixed to the roof crossbeam 200 simultaneously in one step, simplifying the installation process and improving assembly efficiency.

[0123] It is understandable that the upper shell 101 is the part that directly contacts the roof crossbeam 200 of the vehicle body, and the hook 11 and the pretensioning platform 12 can be formed on the upper shell 101.

[0124] In some embodiments, please refer to Figure 1 and Figure 4 The housing 10 also includes a first guide flange 103, which is connected to the upper housing 101 and extends downward at an angle from the connection with the upper housing 101 to guide the deployment of the air bag 20.

[0125] In this embodiment, the first guide flange 103 effectively guides the flow direction of gas after it enters the air bag 20 from the guide tube 40, helping the air bag 20 to unfold more smoothly according to the predetermined shape, protecting the occupant's head and chest, reducing the resistance encountered by the air bag 20 during unfolding, and improving inflation efficiency. The flange angle of the first guide flange 103 can be designed according to the optimal unfolding posture of the air bag 20.

[0126] In some embodiments, please refer to Figure 4 The housing 10 also includes a second guide flange 104, which is connected to the lower housing 102 and extends downward at an angle from the connection with the lower housing 102 to guide the deployment of the air bag 20.

[0127] In this embodiment, the second guide flange 104 effectively guides the flow direction of gas after it enters the air bag 20 from the guide tube 40, helping the air bag 20 to unfold more smoothly according to the predetermined shape, protecting the occupant's head and chest, reducing the resistance encountered by the air bag 20 during unfolding, and improving inflation efficiency. The flange angle of the second guide flange 104 can be designed according to the optimal unfolding posture of the air bag 20.

[0128] It should be noted that in some embodiments, there may only be a first guide flange 103, in other embodiments there may only be a second guide flange 104, and in still other embodiments there may be both a first guide flange 103 and a second guide flange 104.

[0129] The second aspect of this application provides a vehicle, including a body and a roof-mounted airbag 100 according to any embodiment of this application. The body includes a roof crossbeam 200, and a housing 10 and a gas generator 30 are respectively connected to the roof crossbeam 200.

[0130] It should be noted that when the vehicle of this application adopts the overhead airbag 100 of any embodiment of this application, the vehicle of this application has all the advantages of the overhead airbag 100 of that embodiment, which will not be elaborated here.

[0131] It should be noted that the vehicle in this application embodiment can be of various types, such as sedan, commercial vehicle, off-road vehicle or sports utility vehicle, etc.

[0132] In the description of this utility model, it should be understood that the terms "upper", "lower", "vertical", "top", "bottom", etc., 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 this utility model and simplifying the description, and do not 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 this utility model.

[0133] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0134] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0135] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0136] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0137] The above description is merely a preferred embodiment of this application and is not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, and improvements made within the spirit and scope of this application are included within the scope of protection of this application.

Claims

1. An overhead airbag for a vehicle, characterized by, include: case; An air bag is disposed within the housing; A gas generator is disposed outside the housing and the gas bag; A guide tube connects the gas generator and the gas bag to direct the gas generated by the gas generator to the gas bag.

2. The overhead airbag of claim 1, wherein The guide tube is provided with a guide channel and an air outlet. The guide channel is connected to the gas generator, and the air outlet is connected to the guide channel and the air bag. The air outlet penetrates the outer peripheral wall of the flow guide channel; and / or, the air outlet is located at the end of the flow guide tube away from the gas generator.

3. The overhead airbag of claim 1, wherein The gas bag covers at least a portion of the outer periphery of the guide tube; and / or, the guide tube is welded or snapped to the gas generator.

4. The overhead airbag according to any one of claims 1 to 3, characterized in that, The top-mounted airbag includes at least one first clamp, which is disposed on the outside of the housing and is fitted onto the junction of the airbag and the guide tube to fix the airbag and the guide tube.

5. The overhead airbag according to any one of claims 1 to 3, characterized in that, The gas generator extends along a first direction; The guide tube is a straight tube, and the extension direction of the straight tube intersects the first direction; or, the guide tube includes a first sub-segment, a turning segment, and a second sub-segment, the first sub-segment is connected to the gas generator and extends along the second direction, the turning segment connects the first sub-segment and the second sub-segment, at least a portion of the second sub-segment is located inside the gas bag, and the extension direction of the second sub-segment intersects the second direction, wherein the first direction intersects the top and bottom directions, and the second direction intersects the first direction.

6. The overhead airbag according to any one of claims 1 to 3, characterized in that, The overhead airbag includes a bracket and at least one connector. The bracket is disposed outside the housing and the airbag. The gas generator is connected to the bracket, and the connector connects the bracket to the vehicle body.

7. The overhead airbag of claim 6, wherein, At least one end of the bracket extends beyond the gas generator along the extension direction, and the connector is connected to the portion of the bracket that extends beyond the gas generator; And / or, the overhead airbag includes at least one second clamp, which is fitted over the bracket and the gas generator to connect the bracket and the gas generator.

8. The overhead airbag according to any one of claims 1 to 3, characterized in that, The overhead airbag includes fasteners and hooks, the hooks protruding from the top wall of the housing for attaching to the vehicle body, and the fasteners connecting the housing and the vehicle body. The number of fasteners is multiple, with at least two fasteners located on opposite sides of the housing along a first direction. The top wall of the housing has at least one pre-tightening platform, which is located between the two fasteners and on the side of the hook facing the fasteners along a second direction. The first direction, the second direction, and the top and bottom directions are perpendicular to each other.

9. The overhead airbag of any one of claims 1-3, wherein, The housing includes an upper shell and a lower shell, the lower shell being disposed on the bottom side of the upper shell, and the top-mounted airbag includes fasteners that connect the upper shell and the lower shell.

10. The overhead airbag of claim 9, wherein, The housing also includes a first guide flange, which is connected to the upper shell and extends downward at an angle from the connection with the upper shell to guide the deployment of the air bag. And / or, the housing further includes a second guide flange connected to the lower housing and extending downwardly from the connection with the lower housing to guide the deployment of the air bag.

11. A vehicle characterized by comprising: The invention includes a vehicle body and a roof-mounted airbag as described in any one of claims 1-10, wherein the vehicle body includes a roof crossbeam, and the housing and the gas generator are respectively connected to the roof crossbeam.

Images