Fixing structure of air bag excitation device

Abstract

The utility model discloses a fixing structure of an air bag excitation device, which comprises a bottom plate detachably mounted on an air bag support; and the box type fixing support is arranged on the bottom plate and used for wrapping and fixing the air bag excitation device and limiting the air bag deflation drawstring, so that the air bag deflation drawstring is tensioned by the air bag excitation device. The air bag excitation device can be well fixed, and the pressure in the air bag can be adjusted by controlling the self-adaptive deflation hole of the air bag to be opened or closed through the air bag deflation drawstring according to actual conditions, so that the air bag is prevented from hurting passengers with small weight or incorrect sitting postures in the unfolding process. The fixing structure is easy and convenient to install, better in reliability, better in cost and high in universality.

Description

Technical Field

[0001] This utility model relates to the field of automotive airbag technology, and in particular to a fixing structure for an airbag activation device. Background Technology

[0002] An airbag is a safety device in a car's passive restraint system that deploys instantaneously in the event of a collision to protect the occupants. The airbag itself, a crucial component, inflates with gas upon deployment, separating the occupants from the steering wheel or dashboard, thus protecting them. The airbag requires a very high gas pressure to deploy, providing some protection for occupants of normal weight and in a normal sitting position. However, due to the significant impact of deployment, it can easily injure lighter individuals or those with improper sitting postures, especially the driver and front-seat passengers.

[0003] Therefore, after the airbag deploys, in addition to ensuring that the activation device is secured, it is also necessary to ensure that the adaptive deflation port on the airbag can open in time to avoid injury to the occupants when the airbag deploys.

[0004] Therefore, through beneficial exploration and research, the applicant has found a solution to the above problems, and the technical solution to be introduced below is the result of this research. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a fixing structure for an airbag activation device to address the shortcomings of the prior art. This fixing structure can be used to fix the airbag activation device so that when the airbag activation device is not detonated, the airbag deflation strap is not released and the adaptive deflation port is not opened; after the airbag activation device is detonated, the airbag deflation strap is released and the deflation port is opened. The opening time of the adaptive deflation port on the airbag is controlled to adjust the output pressure inside the airbag, so as to avoid injury to passengers during the airbag deployment process.

[0006] The technical problem to be solved by this utility model can be achieved by the following technical solution:

[0007] A fixing structure for an airbag activation device includes:

[0008] A base plate, which is detachably mounted on the airbag support; and

[0009] A box-type fixing bracket is installed on the base plate and is used to cover and fix the airbag activation device, and to limit the airbag deflation strap, so that the airbag activation device tightens the airbag deflation strap.

[0010] In a preferred embodiment of this utility model, the box-type fixing bracket includes a first front side plate, a first rear side plate, and a first upper side plate. The first front side plate, the first rear side plate, and the first upper side plate together form a receiving space for accommodating the airbag activation device. The right side portion of the first front side plate is bent inward toward the first rear side plate to form a first right side snap-fit ​​plate. The first right side snap-fit ​​plate has a first snap-fit ​​groove for fixing the activation end of the airbag activation device. The right side portion of the first rear side plate is bent inward toward the first front side plate to form a first right side fixing plate. The first right side fixing plate is located outside the first right side snap-fit ​​plate, and its inner side abuts against the right side of the activation end of the airbag activation device. One end of the airbag deflation strap passes through the through hole in the bottom plate and extends into the space between the first right side snap-fit ​​plate and the first right side fixing plate and is tied to the activation end of the airbag activation device.

[0011] In a preferred embodiment of the present invention, a first annular snap-fit ​​groove is provided on the outer peripheral surface of the airbag activation device, and a first left and right strip-shaped notch is provided at a distance from the position of the first upper side plate relative to the first annular snap-fit ​​groove; when the airbag activation device is installed in the box-type fixing bracket, the plate of the first upper side plate located between the first left and right strip-shaped notches is pressed inward and snapped into the first annular snap-fit ​​groove of the airbag activation device.

[0012] In a preferred embodiment of this utility model, the box-type fixing bracket includes a second front side plate, a second rear side plate, and a second upper side plate. The second front side plate, the second rear side plate, and the second upper side plate together form a receiving space for accommodating the airbag activation device. The right side portion of the second front side plate is bent inward toward the second rear side plate to form a second right side snap-fit ​​plate. The second right side snap-fit ​​plate has a second snap-fit ​​groove for fixing the activation end of the airbag activation device. The right side portion of the second rear side plate is bent inward toward the second front side plate to form a second right side fixing plate. The second right side fixing plate is located outside the first right side snap-fit ​​plate, and its inner side abuts against the right side surface of the activation end of the airbag activation device. The front side portion of the second right side fixing plate is bent toward the second front side plate to form a front side connecting plate. The left side edge of the front side connecting plate extends to the right side edge of the second front side plate and is welded thereto. One end of the airbag deflation strap passes through the through hole in the bottom plate and extends between the second right side snap-fit ​​plate and the second right side fixing plate and is tied to the activation end of the airbag activation device.

[0013] In a preferred embodiment of the present invention, a second annular snap-fit ​​groove is provided on the outer peripheral surface of the airbag activation device, and a second left and right strip-shaped notch is provided at a distance from the position of the second upper side plate relative to the second annular snap-fit ​​groove; when the airbag activation device is installed in the box-type fixing bracket, the plate of the second upper side plate located between the second left and right strip-shaped notches is pressed inward and snapped into the second annular snap-fit ​​groove of the airbag activation device.

[0014] In a preferred embodiment of the present invention, the base plate is mounted on the airbag bracket by a bolt and nut assembly.

[0015] In a preferred embodiment of this utility model, the base plate and the box-type fixing bracket are made of an integral stamped part, a separate welded part, or an assembled part.

[0016] Due to the adoption of the above technical solution, the beneficial effects of this utility model are as follows: This utility model can effectively fix the airbag activation device, and the pressure inside the airbag can be adjusted by controlling the opening or closing of the adaptive deflation port of the airbag according to the actual situation, so as to avoid injury to passengers with smaller weight or incorrect sitting posture during the deployment of the airbag. The fixing structure of this utility model is simple to install, has better reliability, lower cost, and strong versatility. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a front view of Embodiment 1 of the present invention installed on the airbag bracket.

[0019] Figure 2 This is a schematic diagram of the back of the embodiment 1 of this utility model, installed on the airbag bracket.

[0020] Figure 3 This is a schematic diagram of the structure of Embodiment 1 of this utility model.

[0021] Figure 4 This is a schematic diagram of Embodiment 1 of the present invention when the airbag activation device has not been detonated.

[0022] Figure 5 This is a schematic diagram of Embodiment 1 of the present invention when the airbag activation device is detonated.

[0023] Figure 6This is a structural schematic diagram from one perspective of Embodiment 2 of this utility model.

[0024] Figure 7 This is a structural schematic diagram from another perspective of Embodiment 2 of this utility model. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below with reference to specific illustrations.

[0026] Example 1

[0027] See Figures 1 to 5 The figure shows a fixing structure for an airbag activation device, including a base plate 100 and a box-type fixing bracket 200.

[0028] The base plate 100 is detachably mounted on the airbag bracket 10, and the base plate 100 has a through hole 110 through which the air supply bag deflation strap 30 passes. In this embodiment, the base plate 100 is mounted on the airbag bracket 10 by bolt and nut assembly 120 to ensure that the base plate 100 is securely mounted.

[0029] The box-type fixing bracket 200 is mounted on the base plate 100 and is used to cover and fix the airbag activation device 20 (gas generator) and limit the airbag deflation strap 30, so that the airbag activation device 20 tightens the airbag deflation strap 30. In this embodiment, the base plate 100 and the box-type fixing bracket 200 are integrally stamped parts, but they can also be separate welded parts or assembled parts.

[0030] The box-type fixing bracket 200 includes a front side plate 210, a rear side plate 220, and an upper side plate 230. The front side plate 210, rear side plate 220, and upper side plate 230 are made of sheet metal with a thickness of less than 2 mm. When the front side plate 210, rear side plate 220, and upper side plate 230 are assembled, they form a receiving space for accommodating the airbag activation device 20. The right side portion of the front side plate 210 is bent inward toward the rear side plate 220 to form a right side snap-fit ​​plate 240. The right side snap-fit ​​plate 240 has a snap-fit ​​groove 241 for fixing the activation end 21 of the airbag activation device 20. The right side portion of the rear side plate 220 is bent inward toward the front side plate 210 to form a right side fixing plate 250. The right side fixing plate 250 is located outside the right side snap-fit ​​plate 240.

[0031] During installation, the airbag activation device 20 is installed inside the box-type fixing bracket 200. The front side plate 210, rear side plate 220 and upper side plate 230 limit the front side, rear side and top surface of the airbag activation device 20. The activation end 21 of the airbag activation device 20 is inserted into the snap-fit ​​groove 241 of the right side snap-fit ​​plate 240 to limit the front and rear direction of the airbag activation device 20. The right side of the activation end 21 of the airbag activation device 20 abuts against the inner side of the right side fixing plate 250. One end of the airbag deflation strap 30 is connected to the adaptive deflation hole of the folded airbag 40, and the other end passes through the through hole 110 opened in the base plate 100 and extends into the space between the right snap plate 240 and the right fixing plate 250 and is tied to the activation end 21 of the airbag activation device 20. The right snap plate 240 and the right fixing plate 250 limit the airbag deflation strap 30 to prevent it from falling off the activation end 21 of the airbag activation device 20.

[0032] To further improve the fixation effect of the airbag activation device, an annular locking groove 22 is provided on the outer peripheral surface of the airbag activation device 20, and left and right strip-shaped notches 231 and 232 are spaced apart at the position of the upper side plate 230 relative to the annular locking groove 22. After the airbag activation device 20 is installed in the box-type fixing bracket 200, the plate 233 of the upper side plate 230 located between the left and right strip-shaped notches 231 and 232 is pressed inward and locked into the annular locking groove 22 of the airbag activation device 20, so that the airbag activation device 20 is further fixed.

[0033] When the airbag activation device 20 is not activated, the activation end 21 of the airbag activation device 20 will not retract. At this time, the airbag deflation strap 30 is not released, and the adaptive exhaust port is closed (the exhaust cylinder is tightened). Figure 4 As shown. When the airbag activation device 20 is not activated, the activation end 21 of the airbag activation device 20 retracts. At this time, the airbag deflation strap 30 is released, and the adaptive exhaust port is in the open state (the exhaust cylinder is tightened), as shown. Figure 5 As shown, this is to prevent injury to passengers who are lighter or have poor posture during the deployment of the airbag.

[0034] Example 2

[0035] The fixing structure of the airbag activation device in this embodiment is largely the same as that of the airbag activation device in Embodiment 1. Specifically, see... Figure 6 and Figure 7In this embodiment, the box-type fixing bracket 200a includes a front side plate 210a, a rear side plate 220a, and an upper side plate 230a. The lower edge of the front side plate 210a is fixed to the bottom plate 100a by welding, but snap-fit ​​or other fixing connection structures can also be used. The front side plate 210a, rear side plate 220a, and upper side plate 230a, when enclosed, form a receiving space for accommodating the airbag activation device. The right side portion of the front side plate 210a is bent inward toward the rear side plate 220a to form a right side snap-fit ​​plate 240a. The right side snap-fit ​​plate 240a has a snap-fit ​​groove 241a for fixing the activation end of the airbag activation device. The right side portion of the rear side plate 220a is bent inward toward the front side plate 210a to form a right side fixing plate 250a. The right side fixing plate 250a is located outside the right side snap-fit ​​plate 240a. The front side portion of the right side fixing plate 250a is bent toward the front side plate 210a to form a front side connecting plate 260a. The left side edge of the front side connecting plate 260a extends to the right side edge of the front side plate 210a and is welded thereto. Of course, snap-fit ​​or other fixed connection structures can also be used.

[0036] During installation, the airbag activation device is installed inside the box-type fixing bracket 200a. The front side plate 210a, rear side plate 220a, and upper side plate 230a limit the front, rear, and top surfaces of the airbag activation device. The activation end of the airbag activation device is engaged in the engagement groove 241a of the right side engagement plate 240a to limit the forward and backward movement of the airbag activation device. The right side of the activation end of the airbag activation device abuts against the inner side of the right side fixing plate 250a. One end of the airbag deflation strap is connected to the adaptive deflation hole of the folded airbag, and the other end passes through the through hole 110a in the bottom plate 100a and extends between the right side engagement plate 240a and the right side fixing plate 250a, and is tied to the activation end of the airbag activation device. The right side engagement plate 240a and the right side fixing plate 250a limit the airbag deflator strap to prevent it from falling off the activation end of the airbag activation device.

[0037] To further improve the fixation effect of the airbag activation device, an annular locking groove is provided on the outer peripheral surface of the airbag activation device. Left and right strip-shaped notches 231a and 232a are spaced apart at positions on the upper side plate 230a relative to the annular locking groove. After the airbag activation device is installed in the box-type fixing bracket 200a, the plate 233a of the upper side plate 230a located between the left and right strip-shaped notches 231a and 232a is pressed inward and locked into the annular locking groove of the airbag activation device, thereby further fixing the airbag activation device in place.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A fixing structure for an airbag activation device, characterized in that, include: A base plate, which is detachably mounted on the airbag support; as well as A box-type fixing bracket is installed on the base plate and is used to cover and fix the airbag activation device, and to limit the airbag deflation strap, so that the airbag activation device tightens the airbag deflation strap. The box-type fixing bracket includes a first front side plate, a first rear side plate, and a first upper side plate. The first front side plate, the first rear side plate, and the first upper side plate together form a receiving space for accommodating the airbag activation device. The right side of the first front side plate is bent inward toward the first rear side plate to form a first right side snap-fit ​​plate. The first right side snap-fit ​​plate has a first snap-fit ​​groove for fixing the activation end of the airbag activation device. The right side of the first rear side plate is bent inward toward the first front side plate to form a first right side fixing plate. The first right side fixing plate is located outside the first right side snap-fit ​​plate, and its inner side abuts against the right side of the activation end of the airbag activation device. One end of the airbag deflation strap passes through the through hole in the bottom plate and extends into the space between the first right side snap-fit ​​plate and the first right side fixing plate and is tied to the activation end of the airbag activation device.

2. The fixing structure of the airbag activation device as described in claim 1, characterized in that, The outer peripheral surface of the airbag activation device is provided with a first annular snap-fit ​​groove, and the first upper side plate is provided with first left and right strip-shaped notches at a distance from the position of the first annular snap-fit ​​groove. When the airbag activation device is installed in the box-type fixing bracket, the plate of the first upper side plate located between the first left and right strip-shaped notches is pressed inward and snapped into the first annular snap-fit ​​groove of the airbag activation device.

3. The fixing structure of the airbag activation device as described in claim 1, characterized in that, The box-type fixing bracket includes a second front side plate, a second rear side plate, and a second upper side plate. The second front side plate, the second rear side plate, and the second upper side plate together form a receiving space for accommodating the airbag activation device. The right side of the second front side plate is bent inward toward the second rear side plate to form a second right side snap-fit ​​plate. The second right side snap-fit ​​plate has a second snap-fit ​​groove for fixing the activation end of the airbag activation device. The right side of the second rear side plate is bent inward toward the second front side plate to form a second right side fixing plate. The second right side fixing plate is located outside the first right side snap-fit ​​plate and its inner side abuts against the right side of the activation end of the airbag activation device. The front side of the second right side fixing plate is bent toward the second front side plate to form a front side connecting plate. The left side edge of the front side connecting plate extends to the right side edge of the second front side plate and is welded thereto. One end of the airbag deflation strap passes through the through hole in the bottom plate and extends between the second right side snap-fit ​​plate and the second right side fixing plate and is tied to the activation end of the airbag activation device.

4. The fixing structure of the airbag activation device as described in claim 3, characterized in that, The outer circumferential surface of the airbag activation device is provided with a second annular snap-fit ​​groove, and the second upper side plate is provided with second left and right strip-shaped notches spaced apart at the position of the second annular snap-fit ​​groove; when the airbag activation device is installed in the box-type fixing bracket, the plate of the second upper side plate located between the second left and right strip-shaped notches is pressed inward and snapped into the second annular snap-fit ​​groove of the airbag activation device.

5. The fixing structure of the airbag activation device as described in claim 1, characterized in that, The base plate is mounted on the airbag bracket by a bolt and nut assembly.

6. The fixing structure of the airbag activation device as described in claim 1, characterized in that, The base plate and the box-type fixing bracket are connected by an integral stamped part, a separate welded part, or an assembled part.

Images