Air bag fixing device for bottom of vehicle

Abstract

The utility model discloses an air bag fixing device used at the bottom of a vehicle, and particularly relates to the field of automobile protection structures, the air bag fixing device comprises an air bag mechanism, a shell, a cover plate and a medium piece, one side of the shell is provided with an opening, an airless air bag is arranged in the shell in a folded mode, and the cover plate is sealed on the opening through the medium piece. The cover plate and the shell are connected through a point or a glue solution, and after the air bag is inflated, the cover plate is pressed and falls off from the opening of the shell; the water level sensor is arranged in an automobile engine compartment; the inert gas tank is mounted in the automobile body, and a tank opening is communicated with the air bag; by arranging a detachable structure, the cover plate and the shell have the sealing performance and the quick popping characteristic of the air bag, the sealing function can reduce the probability that external dust enters the air bag to corrode the air bag, quick response can be achieved when an automobile is soaked in water through quick popping of the air bag, the safety of the automobile is improved, and the service life of the automobile is prolonged. And the safety of the vehicle is ensured.

Description

Technical Field

[0001] The utility model relates to the field of automobile protection structures, and more specifically, to an air bag fixing device used for the bottom of a vehicle. Background Art

[0002] In order to reduce the probability of cars being submerged and becoming useless in flooding environments, some people on the market have installed pop-out airbags under the car chassis. When flooding occurs, the pop-out airbags can allow the car to float on the water and reduce the probability of internal car parts being immersed in water. The working principle is roughly that the airbag is installed inside the shell, and when necessary, the controller controls the airbag to pop out from the inside of the shell.

[0003] The existing shell cannot achieve both the dual functions of airtightness of the internal space and rapid deployment of the airbag. Poor airtightness allows external gas and moisture to easily enter the shell and corrode the airbag. If the deployment response is not quick, it will endanger the safety of the car. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, an embodiment of the utility model provides an airbag fixing device for the bottom of a vehicle. The technical problem to be solved by the utility model is: how to solve the problem that the existing shell cannot have both the dual functions of airtightness and facilitating the rapid deployment of the airbag.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an airbag fixing device for the bottom of a vehicle, comprising an airbag mechanism, including a shell, a cover plate and a media member, an opening is provided on one side of the shell, an airless airbag is folded and arranged in the shell, the cover plate is sealed on the opening through the media member, the cover plate and the shell are connected by point connection or glue, when the airbag is inflated, the cover plate is pressurized and falls off from the opening of the shell; a water level sensor is arranged in the engine compartment of the car; an inert gas tank is installed in the car body, and the tank mouth is connected to the airbag; a controller is electrically connected to the water level sensor and the valve of the inert gas tank.

[0006] In a preferred embodiment, the media member is an insert member, including a plug, a limiting soft ring and a limiting plate. Several limiting soft rings are fixed on the plug at intervals. The limiting soft rings and the inner wall of the shell opening interfere with each other. The plug and the limiting plate are fixedly connected. The cover plate is embedded in the limiting plate and point-connected with the limiting plate through protrusions.

[0007] In a preferred embodiment, both the limiting plate and the cover plate are provided with matching stepped surfaces.

[0008] In a preferred embodiment, the medium is an adhesive member, which includes an adhesive rod, a glue storage cavity, and a resistance wire. The resistance wire is electrically connected to a controller. The adhesive rod is fixed to the cover plate, the glue storage cavity is formed in the housing, the adhesive rod can be inserted into the glue storage cavity, and the glue storage cavity is filled with hot melt adhesive.

[0009] In a preferred embodiment, the surface of the adhesive rod is provided with uneven textures.

[0010] In a preferred embodiment, the airbag mechanism is designed in a split manner, and the four airbag mechanisms are respectively detachably connected to the front bumper, rear bumper, under the left door, and under the right door of the vehicle chassis.

[0011] In a preferred embodiment, the controller is electrically connected to a manual switch. When the manual switch is closed, the circuit is connected, and the controller controls the opening of the valve of the inert gas tank to input inert gas into the airbag.

[0012] The technical effects and advantages of the present utility model:

[0013] By providing a detachable structure in the present application, the cover plate and the housing have both sealing performance and the characteristic of rapid airbag ejection. The sealing function can reduce the probability of external dust entering the airbag and corroding the airbag, and the rapid ejection of the airbag can respond quickly when the vehicle is immersed in water, ensuring the safety of the vehicle. Description of the Drawings

[0014] The drawings are used to provide a further understanding of the technical solution of the present utility model, and constitute a part of the present utility model. The embodiments of the present utility model and their descriptions are used to explain the present utility model, and do not constitute an improper limitation to the present utility model.

[0015] Figure 1 It is a structural diagram of an airbag fixing device for the bottom of a vehicle of the present utility model.

[0016] Figure 2 It is a structural diagram of the plug-in member in the present utility model.

[0017] Figure 3 It is a side view of the plug-in member in the present utility model.

[0018] Figure 4 It is a structural diagram of the adhesive member in the present utility model.

[0019] The reference numerals in the drawings are: 1. Airbag mechanism; 11. Housing; 12. Cover plate; 13. Plug-in member; 131. Plug; 132. Limiting soft ring; 133. Limiting plate; 14. Adhesive member; 141. Adhesive rod; 142. Glue storage cavity; 2. Vehicle chassis. Detailed Embodiments

[0020] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the examples set forth herein; rather, these example embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus repeated descriptions thereof will be omitted.

[0021] In addition, the described features, structures, or characteristics may be combined in any suitable manner in one or more example embodiments. In the following description, numerous specific details are provided to give a thorough understanding of the example embodiments of the present disclosure. However, those skilled in the art will realize that the technical solutions of the present disclosure may be practiced without one or more of the specific details, or other methods, components, steps, etc. may be employed. In other cases, well-known structures, methods, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the present disclosure.

[0022] Example 1

[0023] As Figures 1-3 , an airbag fixing device for the vehicle bottom includes an airbag mechanism 1 disposed at the bottom of the vehicle chassis 2. The airbag mechanism 1 is a split structure, and the four airbag mechanisms 1 are respectively detachably connected to the front bumper, the rear bumper, and the lower sides of the two doors of the vehicle chassis 2. When encountering water, it provides balanced buoyancy from four directions so that the whole vehicle body can safely float on the water surface.

[0024] The airbag mechanism 1 includes a housing 11, a cover plate 12, and a plug-in member 13. The housing 11 is detachably connected to the vehicle chassis 2 through bolt fasteners. The housing 11 is detachably connected to the cover plate 12 through the plug-in member 13. An opening for the airbag to pop out is provided on the housing 11. A folded airless airbag is filled in the housing 11. The cover plate 12 is used to close the opening of the housing 11. The plug-in member 13 includes a plug 131, a limiting soft ring 132, and a limiting plate 133. The plug 131 and the limiting plate 133 are fixedly connected. A number of limiting soft rings 132 are fixed on the plug 131. When the plug 131 is inserted into the opening of the housing 11, the limiting soft rings 132 are pressed and bent to increase the movement damping between the plug 131 and the inner wall of the housing 11, reducing the probability of the plug 131 accidentally detaching from the opening. A trapezoidal notch is provided in the limiting plate 133, and a cover plate 12 with the same trapezoidal cross-section is embedded in the notch. The cover plate 12 and the trapezoidal surface of the limiting plate 133 are connected by points. When the airbag in the opening pops out, it can squeeze and disconnect the connection points between the cover plate 12 and the limiting plate 133, allowing the airbag to pop out from the notch of the limiting plate 133.

[0025] It should be noted that the so-called point connection means that there are convex points between the contact surfaces of the cover plate 12 and the limit plate 133. The convex points are used to connect the cover plate 12 and the limit plate 133. When the cover plate 12 is subjected to a sufficiently large pressure, the convex points between the cover plate 12 and the limit plate 133 will break, so that the cover plate 12 can be detached from the limit plate 133.

[0026] The control logic in this embodiment is as follows: A water level sensor is arranged in the engine compartment. When the water level rises above the water level sensor, the controller electrically connected to the water level sensor controls the opening of the valve of the inert gas tank arranged in the vehicle body, allowing the inert gas to enter the airbag, so that the airbag can be safely and quickly ejected.

[0027] It can be known that the controller can also be connected to a manual switch. In the event that the water level sensor fails or in other necessary situations, the user can manually close the switch to ensure that the controller can open the valve of the inert gas tank, allowing the inert gas to gradually fill the airbag.

[0028] The advantage of the above design is that the trapezoidal surface can ensure the sealing performance. The point connection method between the cover plate 12 and the limit plate 133 is beneficial to the rapid deployment of the airbag. During production, the cover plate 12 and the insert 13 are integrally formed by injection molding. As a medium, the insert 13 can quickly install the cover plate 12 onto the housing 11. After the cover plate 12 is detached from the housing 11, it is only necessary to replace the combination of the cover plate 12 and the insert 13, which is convenient and fast, and saves the reuse cost of the airbag fixing device.

[0029] Embodiment 2

[0030] Such as Figure 1 and Figure 4 , an airbag fixing device for the bottom of a vehicle, includes an airbag mechanism 1 arranged at the bottom of the vehicle chassis 2. The airbag mechanism 1 is a split structure. The four airbag mechanisms 1 are respectively arranged on the front bumper, the rear bumper and under the two side doors of the vehicle chassis 2. When encountering water, it provides balanced buoyancy from four directions to allow the entire vehicle body to safely float on the water surface.

[0031] The airbag mechanism 1 includes a housing 11, a cover plate 12 and an adhesive member 14. An opening is formed on one side of the housing 11. The housing 11 and the cover plate 12 are connected by the adhesive member 14. The adhesive member 14 includes an adhesive rod 141, a glue storage cavity 142 and a resistance wire. The adhesive rod 141 is fixed on the cover plate 12, and the glue storage cavity 142 is formed in the housing 11. The deflated airbag is folded and placed inside the housing 11, and the cover plate 12 is used to close the opening of the housing 11. The glue storage cavity 142 is filled with a hot melt adhesive. The adhesive rod 141 can be inserted into the glue in the glue storage cavity 142. When the external environment is at room temperature, the glue solidifies to firmly fix the cover plate 12 on one side of the opening to ensure airtightness. When the airbag needs to be ejected, the controller controls the resistance wire to heat, the hot melt adhesive melts, and the cover plate 12 separates from the housing 11 under the extrusion of the gradually expanding airbag, so as to facilitate the rapid ejection of the airbag.

[0032] Preferably, the surface of the adhesive rod 141 is provided with uneven textures to increase the contact area between the adhesive rod 141 and the glue in the glue storage cavity 142 and improve the connection stability.

[0033] The control logic in this embodiment is as follows: a water level sensor is arranged in the engine compartment. When the water submerges the water level sensor, the controller electrically connected to the water level sensor controls the inert gas tank arranged in the vehicle body to open the valve, allowing the inert gas to enter the airbag so that the airbag can be ejected safely and quickly.

[0034] It can be known that the controller can also be connected to a manual switch. When the water level sensor fails or in other situations, the user can also manually close the switch to ensure that the controller opens the valve of the inert gas tank, allowing the inert gas to gradually fill the airbag.

[0035] The advantage of this embodiment is that the method of using glue to fix the cover plate 12 has better airtightness for the connection between the housing 11 and the cover plate 12, and heating the glue with the resistance wire can also ensure the response speed when the cover plate 12 leaves the housing 11.

[0036] From the perspective of Comprehensive Embodiment 1 and Embodiment 2, the present application has a detachable structure, enabling both airtightness and rapid airbag ejection characteristics between the cover plate 12 and the housing 11. The sealing function can reduce the probability of external dust entering the airbag and corroding the airbag, and the rapid ejection of the airbag can quickly respond when the vehicle is immersed in water, ensuring the safety of the vehicle.

[0037] Only some exemplary embodiments of the present invention have been described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present invention.

[0038] The following points should be noted: First, in the description of this application, it should be noted that unless otherwise specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense, which can be a mechanical connection or an electrical connection, or the communication inside two components, and can be directly connected. The terms "upper", "lower", "left", "right", etc. are only used to represent the relative positional relationship. When the absolute position of the object being described changes, the relative positional relationship may change;

[0039] Second, in the drawings of the disclosed embodiments of the present utility model, only the structures related to the disclosed embodiments are involved. For other structures, reference can be made to the general design. Without conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0040] Finally, the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. 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 airbag fixing device for the bottom of a vehicle, characterized in that include: An airbag mechanism (1) comprises a shell (11), a cover plate (12) and a media member, wherein an opening is arranged on one side of the shell (11), an airless airbag is folded and arranged in the shell (11), the cover plate (12) is sealed on the opening through the media member, the cover plate (12) and the shell (11) are connected by point connection or glue, and when the airbag is inflated, the cover plate (12) is compressed and falls off from the opening of the shell (11); The water level sensor is arranged in the engine compartment of the car; An inert gas tank is installed in the car body, and the tank opening is connected to the airbag; The controller is electrically connected to the water level sensor and the valve of the inert gas tank.

2. The airbag fixing device for the bottom of a vehicle according to claim 1, characterized in that: The intermediary member is an inserting member (13), comprising a plug (131), a limiting soft ring (132) and a limiting plate (133); a plurality of limiting soft rings (132) are fixed at intervals on the plug (131); the limiting soft rings (132) and the inner wall of the opening of the shell (11) interfere with each other; the plug (131) and the limiting plate (133) are fixedly connected; the cover plate (12) is embedded in the limiting plate (133) and is point-connected to the limiting plate (133) through convex points.

3. The airbag fixing device for the bottom of a vehicle according to claim 2, characterized in that: The limiting plate (133) and the cover plate (12) are both provided with matching stepped surfaces.

4. The airbag fixing device for the bottom of a vehicle according to claim 1, characterized in that: The medium component is an adhesive component (14), comprising an adhesive rod (141), an adhesive storage chamber (142) and a resistance wire, the resistance wire and the controller are electrically connected, the adhesive rod (141) is fixed on the cover plate (12), the adhesive storage chamber (142) is opened in the shell (11), the adhesive rod (141) can be inserted into the adhesive storage chamber (142), and the adhesive storage chamber (142) is filled with hot melt adhesive.

5. The airbag fixing device for the bottom of a vehicle according to claim 4, characterized in that: The surface of the sticking rod (141) is provided with an uneven texture.

6. The airbag fixing device for the bottom of a vehicle according to claim 1, characterized in that: The airbag mechanism (1) is of split design, and the four airbag mechanisms (1) are respectively detachably connected to the front bumper, the rear bumper, the lower part of the left door and the lower part of the right door of the automobile chassis (2).

7. The airbag fixing device for the bottom of a vehicle according to claim 1, characterized in that: The controller is electrically connected to the manual switch. When the manual switch is closed, the circuit is connected, and the controller controls the valve of the inert gas tank to open so as to input the inert gas into the airbag.

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