CN218172201U - Copilot air bag device - Google Patents

Abstract

The application provides a copilot air bag safety device, its shielding part is located the gas guide mechanism and is corresponding to the partial periphery of gas generator gas outlet, the gas guide mechanism fastens and arranges the sack together with gas generator in, the gasbag is placed in the air bag casing after folding together with gas generator and gas guide mechanism together, the size of air bag casing along the car length direction is less than or equal to 80mm, wherein, the fixed part of gas guide mechanism fastens on the lateral wall of air bag casing, the gas that gas generator produced is by the direction that the shielding part direction gasbag of gas guide mechanism expanded. Through the gas generator and the air guide mechanism which are installed on the side, the layout installation of the air bag shell in a narrow space is realized, the gas generated by the gas generator is guided to the unfolding direction of the bag by the shielding part of the air guide mechanism, the energy loss of the bag generator is reduced, the bag is quickly unfolded and is unfolded towards the direction which is favorable for protecting passengers, and the better protection effect is achieved.

Description

Copilot air bag device

Technical Field

The application relates to the technical field of vehicle safety, in particular to a copilot safety airbag device.

Background

The passenger airbag is used to protect an occupant in a front passenger seat of the vehicle. With the increasing comfort requirements in vehicles, new requirements are being placed on the installation of vehicle interior structures. For example, the requirement for the size of the airbag housing for the passenger airbag increases.

At present, the copilot air bag is installed at the bottom of the air bag shell corresponding to the gas generator, but along with the reduction of the installation space of the internal structure of the vehicle, the installation of the copilot air bag device cannot be realized by the mode of bottom arrangement at present. For example, the size of the airbag reserved for the copilot is less than 80mm corresponding to the bottom of the airbag shell, and the width of the flange of the pie-shaped gas generator exceeds 80mm in some cases, so that the pie-shaped gas generator cannot be installed at the bottom of the airbag shell.

Therefore, a new passenger airbag solution is needed.

SUMMERY OF THE UTILITY MODEL

In view of this, embodiments of the present specification provide a passenger airbag device that is suitable for an airbag device in a narrow space.

The embodiment of the specification provides the following technical scheme:

the embodiment of the specification provides a copilot air bag device, which comprises a bag, a gas generator, a gas guide mechanism and a bag shell, wherein the gas guide mechanism is provided with a shielding part and a fixing part, the shielding part is arranged at the periphery of the part, corresponding to a gas outlet of the gas generator, of the gas guide mechanism, the gas guide mechanism and the gas generator are fastened and arranged in the bag together, the bag is folded together with the gas generator and the gas guide mechanism and then arranged in the bag shell, the size of the bag shell along the vehicle length direction is smaller than or equal to 80mm, the fixing part of the gas guide mechanism is fastened on the side wall of the bag shell, and gas generated by the gas generator is guided to the unfolding direction of the bag by the shielding part of the gas guide mechanism.

Compared with the prior art, the beneficial effects that can be achieved by the at least one technical scheme adopted by the embodiment of the specification at least comprise:

through the gas generator and the air guide mechanism of side-standing installation, not only realize narrow and small space gasbag casing's overall arrangement installation, the direction that the gaseous shelter portion direction bag that makes gas generator produce moreover by the air guide mechanism expanded is favorable to the direction that the bag direction was expanded, reduces the loss of bag generator energy, realize that gas generator produces gaseous whole in-process bag expand fast and expand towards favourable protection passenger's direction more, thereby have better protection effect.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic view of a prior art mounting of a gas generator to the bottom of an air bag housing;

FIG. 2 is a schematic view of an embodiment of the present disclosure showing a gas generator mounted to a side wall of an airbag;

FIG. 3 is a front view of an airbag housing provided in accordance with an embodiment of the present disclosure;

FIG. 4 is a schematic cross-sectional view of an airbag housing provided in an embodiment of the present disclosure;

FIG. 5 is a schematic view of a cylindrical gas generator and a bar bracket according to an embodiment of the present disclosure;

FIG. 6 is a schematic side view of an airbag housing provided in accordance with an embodiment of the present disclosure;

FIG. 7 is a first schematic view of a retaining ring provided in embodiments of the present disclosure;

FIG. 8 is a second schematic view of a retaining ring provided in embodiments herein;

FIG. 9 is a schematic view of the installation angle in the embodiment of the present specification;

FIG. 10 is a schematic illustration of a concave inner surface provided by embodiments of the present description;

FIG. 11 is a schematic view of the location of a tear line provided in embodiments of the present description;

FIG. 12 is a comparison of the initial inflation effect of the bladder provided by the embodiments of the present disclosure;

FIG. 13 is a comparison of the effect of the bladder on the inflation provided by the embodiments of the present disclosure;

fig. 14 is a schematic view of an instrument panel provided in an embodiment of the present description.

Detailed Description

The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

The following description of the embodiments of the present application is provided by way of specific examples, and other advantages and effects of the present application will be readily apparent to those skilled in the art from the disclosure herein. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. The present application is capable of other and different embodiments and its several details are capable of modifications and/or changes in various respects, all without departing from the spirit of the present application. It should be noted that the features in the following embodiments and examples may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It is noted that various aspects of the embodiments are described below within the scope of the appended claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the present application, one skilled in the art should appreciate that one aspect described herein may be implemented independently of any other aspects and that two or more of these aspects may be combined in various ways. For example, an apparatus may be implemented and/or a method practiced using any number and aspects set forth herein. Additionally, such an apparatus may be implemented and/or such a method may be practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.

It should be further noted that the drawings provided in the following embodiments are only schematic illustrations of the basic concepts of the present application, and the drawings only show the components related to the present application rather than the numbers, shapes and dimensions of the components in actual implementation, and the types, the numbers and the proportions of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.

In addition, in the following description, specific details are provided to provide a thorough understanding of the examples. However, it will be understood by those skilled in the art that the present invention may be practiced without these specific details.

As shown in fig. 1, the installation space of the vehicle interior structure is reduced due to the improvement of the comfort requirement in the vehicle, such as the size of the reserved bottom of the air bag shell is less than 80mm. At present, the copilot safety airbag is arranged at the bottom of the airbag shell 1 corresponding to the gas generator 2, and the flange width of the cake-shaped gas generator under some conditions exceeds 80mm, so that the cake-shaped gas generator cannot be arranged at the bottom of the airbag shell.

In view of the above, the inventors have found that mounting the gas generator on the side of the side wall of the airbag case and guiding the deployment direction of the bag by the gas guide mechanism can be achieved without requiring special arrangements of the mounting side wall of the airbag case, such as arranging the mounting side wall in a shape that protrudes from the other side wall in accordance with the mounting space, or the like. Only the requirement of installation size is met, the gas generator is combined with the gas guide mechanism and is installed in the side wall of the air bag shell in a side-standing mode, installation in a narrow space is achieved, energy loss of the gas generator is reduced, the bag is unfolded towards the direction which is more beneficial to protecting a secondary driver and a passenger, and the better safety protection effect of the passenger at the secondary driving position is achieved.

Based on this, the present embodiment proposes a new passenger airbag apparatus, and the installation dimension of the airbag housing is reserved in the vehicle length direction to be 80mm or less, so it is necessary to improve the passenger airbag apparatus, as shown in fig. 4, not only the gas generator 2 is installed on the side wall of the airbag housing 1 in a side-by-side manner, but also the gas guide mechanism 3 is provided with the shielding portion 32 and the fixing portion 31, and the gas guide mechanism 3, the gas generator 2, and the bag (not shown) are folded and fastened to the side wall of the airbag housing 1 together with the fixing portion 31, so that not only the installation requirement of a small size is satisfied, but also the bag is deployed to a direction more favorable for protecting the passenger at the passenger position when the gas generator 2 generates gas through the shielding portion 32 of the gas guide mechanism.

The technical solutions provided by the embodiments of the present application are described below with reference to the accompanying drawings.

As shown in fig. 2 to 6, the present specification provides a passenger airbag device, which may include a bag (not shown), a gas generator 2, a gas guide mechanism 3, and an airbag housing 1, wherein the gas guide mechanism 3 is provided with a shielding portion 32 and a fixing portion 31, the shielding portion 32 is provided at a portion of an outer periphery of the gas guide mechanism 3 corresponding to a gas outlet of the gas generator, the gas guide mechanism 3 is fastened to the gas generator 2 and is disposed in the bag, the bag is folded together with the gas generator 2 and the gas guide mechanism 3 and is disposed in the airbag housing 1, and a dimension of the airbag housing in a vehicle length direction is less than or equal to 80mm, wherein the fixing portion 31 of the gas guide mechanism 3 is fastened to a side wall of the airbag housing 1, and gas generated by the gas generator 2 is guided by the shielding portion 32 of the gas guide mechanism 3 to a direction in which the bag is deployed. In some embodiments, the size of the airbag housing in the vehicle length direction corresponds to the size of the opening of the airbag housing. The bag is folded and folded in an air bag shell (not shown) in a mode of being thin in the middle and thick on two sides, and the size of the thinnest position in the middle along the length direction of the vehicle is 0-35 mm. In some embodiments, the folded thin portion of the pouch is curled and the thick portions of the pouch have a zigzag shape.

The material for making the bag can be fabric material or nylon material, the gas generator is used for inflating the bag, and can be gas generator of gas-drug ignition, compressed gas and the like, or single-stage or multi-stage gas generator, and the shape of the gas generator can be cake type, column type and the like.

In some embodiments, the gas generator is a cake-shaped gas generator, the gas guide mechanism is a retaining ring, the retaining ring is provided with a shielding part corresponding to the periphery of the gas outlet of the cake-shaped gas generator, and the mounting surface of the cake-shaped gas generator is fixedly assembled with the fixing part of the retaining ring; the fixing portion of the retainer ring is fastened to the sidewall of the airbag housing.

As shown in FIG. 4, the gas generator 2 is a cake-shaped gas generator, the gas guiding mechanism 3 is a retaining ring, the gas guiding mechanism 3 is provided with a fixing portion 31 and a shielding portion 32, and the retaining ring is provided with a shielding portion 32 corresponding to the periphery of the gas outlet of the cake-shaped gas generator. The shielding portion 32 of the retaining ring in some embodiments is an arcuate projection that is concentric with the pie-shaped gas generator, as shown in fig. 4 and 8, but differs in radius length. However, in some embodiments, the arc-shaped protrusion need not be concentric with the pie-shaped gas generator. The arc type protrusion is provided at a portion of the outer circumference of the air outlet of the pie-shaped gas generator as shown in fig. 4, the mounting surface (not shown, corresponding to the mounting position of the fixing portion 31) of the pie-shaped gas generator and the fixing portion 31 of the retainer ring are tightly fitted to the sidewall of the airbag case, and the pouch (not shown) is folded together with the pie-shaped gas generator and the retainer ring and is placed on the sidewall of the airbag case, so that the pouch is guided by the arc type protrusion to be developed in a direction advantageous for protecting an occupant at the secondary driving position when the pie-shaped gas generator generates gas.

In some embodiments, the fixed portion of the air guide mechanism is connected to the airbag housing by a flange bolt.

As shown in fig. 4, the fixing portion 31 is fastened to the side wall of the airbag housing with flange bolts and the mounting surface of the pancake type gas generator 2. In some embodiments, the blocking portion of the retaining ring is disposed non-parallel to the fixation portion and facilitates any conforming shape that does not completely surround the gas generator gas outlet. If the fixing portion 31 and the shielding portion 32 form an appropriate acute angle, the shielding portion of the gas outlet at the bottom of the gas generator in FIG. 4 is not blocked. The shape of the shielding part can be set to be triangular, wavy, rectangular and the like. As shown in figure 4, the arc-shaped protruding part of the retaining ring and the bottom of the air bag shell are arranged at a preset installation distance h, and the preset installation distance h is 1mm-10mm. In some embodiments, to better fit the shielding portion of the retaining ring, the bottom of the airbag housing is provided with a protruding portion (e.g., the lowest circular arc in fig. 3) having a different radius from the same center of the arc-shaped protruding portion, but the bottom of the airbag housing is not limited thereto and may be a flat rectangle, a wave-shaped curved surface, an inner concave irregular surface, or the like.

In some embodiments, the surrounding angle alpha of the shielding part of the gas guide mechanism surrounding the gas outlet of the gas generator is 30-270 degrees.

One side wall of the air bag shell is an inclined plane, and an included angle beta is formed between the inclined plane and a vertical plane corresponding to the bottom of the air bag shell; the included angle beta is 0-30 degrees.

The angle α of the shroud surrounding the gas generator outlet is 30 ° to 270 ° as shown in fig. 7. Therefore, the gas generated by the gas generator can be gathered in the guide direction within a certain range at the gas outlet of the gas generator as soon as possible so as to unfold the bag, wherein the phenomena of gas convolution, forced convection and the like from the gas outlet of the gas generator to the quick inflation unfolding position of the bag can be reduced, so that the quick and favorable unfolding of the bag is realized, and the bag is unfolded towards the direction favorable for protecting passengers at the copilot position.

In some embodiments, as shown in fig. 4 and 9, the airbag housing is a single body, and one side wall (i.e., the mounting side wall) of the airbag housing is an inclined surface, i.e., the mounting side wall of the airbag housing is inclined at a proper angle with respect to a vertical surface of the bottom of the airbag housing, e.g., an included angle β is formed between the inclined surface of the airbag housing and the vertical surface of the bottom of the airbag housing; the included angle beta is 0-30 degrees. The reasonable layout of the gas generator in the narrow space is realized, and the advantage that the distance of the air bag shell along the vehicle length direction is smaller is realized, the vertical surface corresponding to the mounting surface of the gas generator and the bottom of the air bag shell is set to be the specific mounting included angle, so that the gas is collected in the guide direction within a certain range at the gas outlet of the gas generator as soon as possible during inflation, the bag is expanded, the phenomena of gas convolution, forced convection and the like from the gas outlet of the gas generator to the quick inflation expansion part of the bag can be reduced, the quick and favorable expansion of the bag is realized, and the bag is expanded towards the direction favorable for protecting passengers at the assistant driving position. Detailed description of the preferred embodimentsreferring to fig. 12 and 13, the left and right portions of the drawings illustrate the deployment of the bladder during the initial slow inflation phase and the completion of the rapid inflation phase, respectively. As can be seen from fig. 12 and 13, the passenger airbag device according to the embodiment of the present disclosure can guide the gas more efficiently in a direction favorable for the deployment of the bag, and reduce the energy loss of the inflator. The initial unfolding speed of the bag and the in-place time of the bag, even the protection shape of the unfolded bag and the like are displayed according to the CAE simulation result, compared with the prior art, the method is more timely and effective, and therefore the safety of passengers at the copilot position can be better protected.

In some embodiments, the gas generator is a cylindrical gas generator, the gas guide mechanism is a strip-shaped bracket, the strip-shaped bracket is provided with a shielding part corresponding to the periphery of the gas outlet of the cylindrical gas generator, the mounting surface of the cylindrical gas generator is fixedly assembled with the fixing part of the strip-shaped bracket, and the fixing part of the strip-shaped bracket is fixedly fastened on the side wall of the airbag shell.

As shown in fig. 5, the gas generator 2 is a columnar gas generator, the gas guide mechanism 3 is a strip-shaped bracket, the strip-shaped bracket comprises a fixing portion 31 and a shielding portion 32, the shielding portion 32 is arranged at the periphery of the gas outlet portion of the columnar gas generator, and the mounting surface (not shown, corresponding to the mounting position of the fixing portion) of the columnar gas generator and the fixing portion of the strip-shaped bracket are tightly assembled on the side wall of the airbag housing. In some embodiments, the fastening portion of the gas guide mechanism is connected to the side wall of the airbag housing by a flange bolt, i.e., the fastening portion of the bar-shaped bracket is connected to the side wall of the airbag housing by a flange bolt via a layer of the bag. Like the cake-shaped generator, the shielding part of the strip-shaped bracket corresponds to a circle center, and the circle center can be the central point of the columnar gas generator or not. The shielding part is not parallel to the fixed part, and is favorable for guiding and incompletely surrounding any adaptive shape of the gas outlet of the gas generator. If the fixed part and the shielding part form a proper acute angle, the shielding part of the gas generator in figure 5 can not block all gas outlets. The shape of the shielding portion may be set to be wavy, rectangular, or the like. The fixing part is fastened and assembled with the mounting surface of the columnar gas generator by adopting a flange bolt. The shielding part of the strip-shaped bracket and the bottom of the air bag shell are arranged at a preset installation distance h, and the preset installation distance h is 1mm-10mm. The bottom of the air bag shell can be a plane rectangle, a wave-shaped curved surface, an inward concave or outward convex irregular surface and the like.

In some embodiments, the surrounding angle alpha of the shielding part of the gas guide mechanism surrounding the gas outlet of the gas generator is 30-270 degrees.

In some embodiments, a sidewall of the airbag housing is an inclined surface, and an included angle β is formed between the inclined surface and a vertical surface corresponding to the bottom of the airbag housing; the included angle beta is 0-30 degrees.

The angle alpha of the shielding part 32 of the strip-shaped bracket of FIG. 5 surrounding the gas generator outlet is 30-270 deg. Therefore, the gas generated by the gas generator can be gathered in a guide direction within a certain range at the gas outlet of the gas generator as soon as possible so as to unfold the bag, wherein the phenomena of gas convolution, forced convection and the like from the gas outlet of the gas generator to the quick inflation unfolding position of the bag can be reduced, so that the quick and favorable unfolding of the bag is realized, and the bag is unfolded towards the direction favorable for protecting passengers at the copilot position. The best protection effect can be realized when the surrounding angle alpha of the shielding part of the strip-shaped bracket surrounding the gas generator gas outlet is 180 degrees.

As shown in fig. 5 and 9, the airbag housing is an integral type, and one side wall (i.e. the mounting side wall) of the airbag housing is an inclined surface, i.e. the mounting side wall of the airbag housing is inclined at a proper angle with respect to the vertical surface of the bottom of the airbag housing, e.g. an included angle β is formed between the inclined surface of the airbag housing and the vertical surface of the bottom of the airbag housing; the included angle beta is 0-30 degrees. Not only realize narrow and small space gas generator's reasonable layout, and to the gasbag casing along the less circumstances such as car length direction distance, set up gas generator's installation face and the perpendicular face that the gasbag casing bottom corresponds to as above-mentioned specific installation contained angle, be favorable to the gas as early as possible to assemble the guide direction in certain extent in gas generator gas outlet department during aerifing, so that the bag expandes, wherein reducible gas generator gas outlet department is to the gas convolution of bag quick inflation expansion department, phenomenons such as forced convection, thereby realize that the bag is quick, favorable expansion, concrete bag orientation is favorable to protecting copilot position passenger's direction expansion. Detailed description of the preferred embodimentsreferring to fig. 12 and 13, the left and right portions of the two figures show the deployment of the bladder during slow and fast inflation, respectively. As can be seen from fig. 12 and 13, the passenger airbag device according to the embodiment of the present disclosure effectively guides the gas in a direction that is advantageous for the deployment of the airbag, thereby reducing the energy loss of the airbag generator. According to the CAE simulation result, the initial unfolding speed of the bag and the in-place time of the bag, even the protection shape of the unfolded bag and the like are displayed, and compared with the prior art, the safety protection bag is more effective and timely, so that the safety of passengers at the copilot position can be better protected.

In some embodiments, the strip-shaped bracket can be further fixed at the bottom of the airbag shell, because the columnar gas generator is long and narrow, the columnar gas generator is tightly mounted on the side wall of the airbag shell but fastened at the bottom of the airbag shell, the strip-shaped bracket is provided with a shielding part corresponding to the periphery of the gas outlet of the columnar gas generator, and the mounting surface of the columnar gas generator and the fixing part of the strip-shaped bracket are fastened and assembled at the bottom of the airbag shell, so that the size requirement of less than 90mm in the vehicle length direction can be still met, and even the sizes of 86mm and 80mm can be met; and the long and narrow space of the air bag shell is combined with the shielding part of the strip-shaped bracket, so that the columnar gas generator guides the bag to be unfolded in the gas guiding direction which is favorable for protecting the safety of passengers at the copilot position in the gas generating process, and a better gas guiding effect is realized.

In some embodiments, a side wall of the airbag housing is a vertical surface, and the vertical side wall surface is provided with an inner concave surface; the vertical side wall is provided with a concave part, the concave surface is sequentially connected with the fixing part of the gas generator and the gas guide mechanism, the concave part is connected with the fixing part and the gas generator which are coated by the concave surface, and the concave part protrudes along the inner side direction of the side wall of the air bag shell.

Specifically, the installation lateral wall of gasbag casing is the perpendicular, and perpendicular lateral wall surface is provided with an interior concave surface, and this interior concave surface corresponds to the fixed part of air guide mechanism, and this interior concave surface passes through flange bolt and connects gradually with gas generator and air guide mechanism's fixed part. The vertical side wall is also provided with a concave part, the concave part is connected with the fixing part and the gas generator which are wrapped by the concave surface, and the concave part protrudes along the inner side direction of the side wall of the air bag shell.

As shown in fig. 4 and 6, the mounting side wall of the airbag housing is a vertical surface, and in order to better fit into a narrow space, the mounting side wall of the airbag housing is provided with a concave portion 5, and the concave portion 5 is provided on the vertical mounting side wall, wherein the surface of the mounting side wall of the airbag housing is provided with a concave surface (see fig. 10). The concave surface of the vertical side wall is connected with the mounting surface of the gas generator and the fixing part 31 of the gas guiding mechanism, the concave part 5 is connected with the concave surface coating fixing part and the gas generator, and the concave part protrudes along the inner side direction of the side wall of the air bag shell. In some embodiments, the side wall of the airbag housing is provided with holes for mounting the fixing portion and the gas generator. Similarly, a concave portion and a concave surface can be provided when the cylindrical gas generator and the strip-shaped bracket are installed on the installation side wall corresponding to the vertical surface of the airbag housing, and the details are not repeated here.

In some embodiments, the size of the airbag housing in the vehicle length direction ranges from 60mm to 90mm.

In some embodiments, the dimension of the airbag housing in the vehicle length direction is less than or equal to 80mm. By adopting the integral structure of the safety airbag, the airbag shell can be arranged in the installation space with the corresponding size along the vehicle length direction less than or equal to 80mm. The air bag housing can be further arranged in the installation space with the corresponding size range of 60 mm-90 mm along the vehicle length direction. In some embodiments, the size of the airbag housing in the vehicle length direction corresponds to the size of the opening of the airbag housing.

In some embodiments, the outer edges of the other two side walls of the air bag housing are provided with lugs, and the air bag housing is fixed on the instrument panel through the lugs.

As shown in fig. 6 and 14, the integrated airbag structure is provided with the suspension loops 6 on the outer edges of the other two side walls of the airbag housing 1, and the airbag housing is fixed to the instrument panel by the suspension loops 6.

In some embodiments, a tear line is provided on the instrument panel, the tear line being provided between a center line of the airbag housing corresponding to the airbag module and an edge side of the airbag housing corresponding to the airbag module in the occupant direction; the tearing line is U-shaped or H-shaped.

Specifically, the airbag housing is fixed to the instrument panel by the suspension loops, and a tear line is provided on the instrument panel, as shown in fig. 11, between a center line of the airbag housing corresponding to the airbag module and an edge side corresponding to the entire airbag module in the occupant direction, as a tear line position g. That is, the tear line may be provided at any position from the center line of the corresponding airbag module to the edge of the corresponding airbag module toward the occupant side. In some embodiments the tear line is U-shaped or H-shaped.

In some embodiments, during inflation of the bladder, the instrument panel portion of the bladder torn along the tear line may block the bladder from deploying in the direction of the windshield and may direct the bladder in the direction of the secondary driving position.

Specifically, during inflation of the bladder, the instrument panel portion of the bladder tearing along the tear line may block the bladder from deploying in the direction of the windshield and may direct the bladder in the direction of the copilot position. Namely, the instrument board part torn by the tearing line can be better unfolded towards the direction far away from the windshield and close to the passenger position in the inflating process of the bag, so that the safety of passengers at the passenger position is better protected.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments can be referred to each other, and each embodiment focuses on the differences from the other embodiments.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A copilot safety airbag device comprises a bag, a gas generator, a gas guide mechanism and an airbag shell, wherein the gas guide mechanism is provided with a shielding part and a fixing part, the shielding part is arranged on the periphery of the part, corresponding to a gas outlet of the gas generator, of the gas guide mechanism, the gas guide mechanism and the gas generator are fastened and arranged in the bag together, the bag, the gas generator and the gas guide mechanism are folded together and then arranged in the airbag shell, the copilot safety airbag device is characterized in that the size of the airbag shell along the vehicle length direction is smaller than or equal to 80mm, the fixing part of the gas guide mechanism is fastened on the side wall of the airbag shell, and gas generated by the gas generator is guided to the unfolding direction of the bag by the shielding part of the gas guide mechanism.

2. The passenger airbag device according to claim 1, wherein the gas generator is a pancake-type gas generator, the gas guide mechanism is a retainer ring, the retainer ring is provided with a shielding portion corresponding to an outer periphery of a gas outlet of the pancake-type gas generator, a mounting surface of the pancake-type gas generator is fixedly fitted to a fixing portion of the retainer ring, and the fixing portion of the retainer ring is fastened to a side wall of the airbag housing.

3. The passenger airbag device according to claim 1, wherein the gas generator is a columnar gas generator, the gas guide mechanism is a bar-shaped bracket, the bar-shaped bracket is provided with a shielding portion corresponding to an outer periphery of a gas outlet of the columnar gas generator, an attachment surface of the columnar gas generator is fixedly attached to an attachment portion of the bar-shaped bracket, and the attachment portion of the bar-shaped bracket is fastened to a side wall of the airbag case.

4. The passenger airbag device according to claim 1, wherein an angle α of the curtain portion of the air guide mechanism surrounding the gas generator gas outlet port is 30 ° to 270 °.

5. The passenger airbag device according to claim 1, wherein the fixing portion of the air guide mechanism is connected to the airbag housing side wall by a flange bolt.

6. The passenger airbag apparatus according to claim 1, wherein a side wall of the airbag housing is an inclined surface forming an angle β with a vertical surface corresponding to a bottom of the airbag housing; the included angle beta is 0-30 degrees.

7. The passenger airbag device according to claim 1, wherein a side wall of the airbag housing is a vertical surface, and a concave surface is provided on a surface of the vertical side wall; the vertical side wall is provided with a concave part, the concave surface is sequentially connected with the fixing part of the gas generator and the gas guide mechanism, the concave part is connected with the fixing part and the gas generator which are coated by the concave surface, and the concave part protrudes along the inner side direction of the side wall of the air bag shell.

8. The passenger airbag device according to claim 1, wherein outer edges of other both side walls of the airbag housing are provided with hanging lugs, and the airbag housing is fixed to the instrument panel by the hanging lugs.

9. The passenger airbag device according to claim 8, wherein a tear line is provided on the instrument panel, the tear line being provided between a center line of the airbag housing corresponding to the airbag module and an edge side of the airbag housing corresponding to the airbag module in the occupant direction; the tearing line is U-shaped or H-shaped.

10. The passenger airbag assembly of claim 9, wherein the instrument panel portion of the bladder torn along the tear line during inflation of the bladder blocks the bladder from deploying in the direction of the windshield and directs the bladder in the direction of the passenger position.

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