Structure for assisting side air curtain in unfolding and vehicle

Abstract

The invention discloses a structure for assisting in unfolding of a side air curtain and a vehicle, the structure for assisting in unfolding of the side air curtain comprises a vehicle body metal plate, a ceiling assembly, the side air curtain and a sun shield assembly, a cavity is formed between the vehicle body metal plate and the ceiling assembly, the side air curtain is installed in the cavity, and the sun shield assembly is installed in the cavity. The sun shield assembly is arranged outside the cavity, a mounting via hole is formed in the ceiling assembly, the sun shield assembly comprises a sun shield mounting seat, and the sun shield mounting seat penetrates through the mounting via hole through an insert reinforcing structure and is connected with the automobile body metal plate. And a first stress release structure is arranged on the ceiling assembly corresponding to the peripheral position of the mounting through hole. The vehicle comprises the structure for assisting the side air curtain in unfolding. According to the invention, the systematic control of the falling risk of parts in the driving area can be realized while the normal unfolding of the side air curtain is ensured.

Description

Technical Field

[0001] The present invention relates to an automotive structure, and more particularly to a structure and a vehicle for assisting the deployment of side air curtains. Background Art

[0002] With the rapid development of new energy vehicle technology in China, the panoramic sunroof technology is increasingly widely applied in electric vehicles. However, there are some technical problems in the current technology application. In order to obtain a larger headroom, a large area needs to be hollowed out in part of the roof to match the sunroof, which results in a weak overall stiffness of the roof. Therefore, it is necessary to compensate for the stiffness from the material aspect. After the material is strengthened, the overall stiffness is effectively improved. However, when the air curtain explodes (especially the top-mounted side air curtain explodes), the local explosion stress cannot be effectively released, which may cause the air curtain explosion stress to concentrate at the fastening points of accessories such as sun visors or safety handles, generating flying objects. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a structure and a vehicle for assisting the deployment of side air curtains, which can systematically control the risk of component detachment in the driver and passenger area while ensuring the normal deployment of the side air curtains.

[0004] A structure for assisting the deployment of side air curtains in the present invention includes a body sheet metal, a roof assembly, a side air curtain, and a sun visor assembly. A cavity is formed between the body sheet metal and the roof assembly. The side air curtain is installed in the cavity. The sun visor assembly is arranged outside the cavity. The roof assembly is provided with mounting through holes. The sun visor assembly includes a sun visor mounting seat. The sun visor mounting seat passes through the mounting through holes through an insert strengthening structure and is connected to the body sheet metal. A first stress release structure is arranged at the peripheral position of the roof assembly corresponding to the mounting through holes.

[0005] Further, it further includes a guiding bracket arranged in the cavity. The guiding bracket is located on the side of the side air curtain facing the sun visor assembly. The guiding bracket is connected to the body sheet metal. An air curtain door part is arranged on the roof assembly. The air curtain door part is located below the side air curtain and the guiding bracket. The air curtain door part is provided with a guiding hinge groove.

[0006] Further, the guiding bracket includes a lapping part, an inclined part, and a guiding part arranged in sequence from top to bottom. The lapping part is welded to the body sheet metal. The inclined part inclines downward in the direction approaching the side air curtain from top to bottom. The lower end of the guiding part is suspended.

[0007] Further, a first reinforcing rib is provided at the connecting corner of the inclined portion and the guiding portion, a plurality of second reinforcing ribs are spaced on the inclined portion, a plurality of third reinforcing ribs are spaced on the guiding portion, and the plurality of second reinforcing ribs and the plurality of third reinforcing ribs are all communicated with the first reinforcing rib and form a fishbone shape; a plurality of fourth reinforcing ribs are spaced at the connecting corner of the overlapping portion and the inclined portion, and the plurality of second reinforcing ribs and the plurality of fourth reinforcing ribs are arranged in a staggered manner.

[0008] Further, the ceiling assembly includes a base material and a fabric covering the surface of the base material. The mounting hole and the first stress relief structure are both provided on the base material. The first stress relief structure is a plurality of first stress relief grooves spaced around the mounting hole, and the plurality of first stress relief grooves are all communicated with the mounting hole; the guiding hinge groove is provided on the side of the base material facing the cavity.

[0009] Further, the ceiling assembly is provided with a bent docking portion for docking with the B-pillar, and the length of the base material of the bent docking portion is less than the length of the fabric of the bent docking portion.

[0010] Further, a plurality of second stress relief grooves are spaced around the position of the base material corresponding to the B-pillar, and a plurality of third stress relief grooves are spaced around the position of the base material corresponding to the C-pillar.

[0011] Further, the insert reinforcement structure includes a first metal insert embedded in the sun visor mounting seat, and a positioning hole and a mounting hole are provided on the first metal insert.

[0012] Further, it further includes a safety handle, a second metal insert is embedded in the safety handle, the safety handle is connected to the vehicle body sheet metal through the second metal insert, and an assembly through hole is provided at the position of the base material corresponding to the second metal insert, and a plurality of fourth stress relief grooves are spaced around the assembly through hole.

[0013] A vehicle in the present invention includes the above structure for assisting the deployment of the side air curtain.

[0014] The beneficial effects of the present invention are: (1) After the side air curtain explodes and deploys in the present invention, the first stress relief structure can enable the ceiling assembly at this place to deform orderly, reduce the stress transmitted to the sun visor mounting seat. At the same time, the insert reinforcement structure is connected to the vehicle body sheet metal through a screw and a nut, and the insert reinforcement structure and the vehicle body sheet metal form an inverted hook type interlocking structure. Therefore, the sun visor mounting seat can enhance its connection strength with the vehicle body sheet metal through the insert reinforcement structure, and prevent the sun visor assembly from falling off due to the air curtain explosion stress after the side air curtain explodes and deploys, resulting in flying objects.

[0015] (2) After the side air curtain of the present invention explodes and unfolds, the plastic deformation of the guiding bracket is used to absorb kinetic energy, and the inclined part is used to guide the unfolded side air curtain to the air curtain door part. The guiding hinge groove of the air curtain door part is a U-shaped groove or a V-shaped groove, and the guiding hinge groove enables the air curtain door part to rotate downward, so as to give way to the unfolded side air curtain and ensure that the side air curtain can unfold to provide protection for users.

[0016] (3) The present invention can have three levels of protection. The first level of protection is blasting stress guidance, the second level of protection is blasting stress release, and the third level of protection is to enhance the strength of the attachment point. Through the above three levels of protection, through the synergistic effect of the three-level energy gradient dissipation and the multi-modal protection mechanism, while ensuring the normal unfolding of the side air curtain, the systematic control of the risk of component detachment in the driving area is realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to make the objectives, technical solutions and beneficial effects of the present invention clearer, the following drawings are provided for the description of the present invention: Figure 1 It is a cross-sectional view of the present invention (at the position where the ceiling assembly cooperates with the sun visor assembly); Figure 2 It is a cross-sectional view of the present invention (at the position where the ceiling assembly cooperates with the B-pillar); Figure 3 It is a structural diagram of the guiding bracket of the present invention; Figure 4 It is a structural diagram of the cooperation of the ceiling assembly, B-pillar and C-pillar of the present invention (hiding the fabric); Figure 5 It is Figure 4 A partial enlarged view of the A position of Figure 6 It is Figure 4 A partial enlarged view of the B position of Figure 7 It is Figure 4 A partial enlarged view of the C position of Figure 8 It is Figure 4 A partial enlarged view of the D position of Figure 9 It is a structural diagram of the sun visor mounting seat of the present invention.

[0018] The markings in the attached drawings are as follows: 1 - body sheet metal, 2 - ceiling assembly, 21 - base material, 211 - mounting through-hole, 212 - guiding hinge groove, 213 - first stress relief groove, 214 - second stress relief groove, 215 - third stress relief groove, 216 - third stress relief groove, 217 - fourth stress relief groove, 218 - assembly through-hole, 22 - fabric, 23 - air curtain door part, 24 - bending butt joint part, 3 - side air curtain, 4 - sun visor assembly, 41 - sun visor mounting seat, 411 - insert reinforcement structure, 412 - positioning hole, 413 - mounting hole, 42 - sun visor body, 5 - cavity, 6 - guiding bracket, 61 - overlapping part, 62 - inclined part, 63 - guiding part, 64 - first reinforcing rib, 65 - second reinforcing rib, 66 - third reinforcing rib, 67 - fourth reinforcing rib, 8 - safety handle, 81 - second metal insert, 9 - B-pillar, 10 - C-pillar. Detailed implementation mode

[0019] The technical solution of the present invention will be described in detail below with reference to the attached drawings and embodiments.

[0020] As Figures 1 - 9 shown, a structure for assisting the deployment of a side air curtain in this embodiment includes a body sheet metal 1, a ceiling assembly 2, a side air curtain 3, and a sun visor assembly 4. A cavity 5 is formed between the body sheet metal 1 and the ceiling assembly 2. The side air curtain 3 is installed in the cavity 5, and the sun visor assembly 4 is arranged outside the cavity 5. A mounting through-hole 211 is provided on the ceiling assembly 2. The sun visor assembly 4 includes a sun visor mounting seat 41. The sun visor mounting seat 41 passes through the mounting through-hole 211 through an insert reinforcement structure 411 and is connected to the body sheet metal 1. A first stress relief structure is provided at the peripheral position of the ceiling assembly 2 corresponding to the mounting through-hole 211.

[0021] Among them, the sun visor assembly 4 further includes a sun visor body 42 connected to the sun visor mounting seat 41.

[0022] After the side air curtain 3 explodes and deploys, the first stress relief structure can cause the ceiling assembly 2 at this place to deform orderly, reducing the stress transmitted to the sun visor mounting seat 41. At the same time, the insert reinforcement structure 411 is connected to the body sheet metal 1 through a thread and a nut, and the insert reinforcement structure 411 and the body sheet metal 1 form an inverted hook type interlocking structure. Therefore, the sun visor mounting seat 41 can enhance its connection strength with the body sheet metal 1 through the insert reinforcement structure 411, preventing the sun visor assembly 4 from falling off due to the air curtain explosion stress after the side air curtain 3 explodes and deploys, resulting in flying objects. The first stress relief structure and the insert reinforcement structure 411 cooperate to jointly achieve systematic control of the risk of component detachment in the driver and passenger area.

[0023] In this embodiment, as Figure 1As shown in the figure, it further includes a guiding bracket 6 disposed in the cavity 5. The guiding bracket 6 is located on the side of the side airbag 3 facing the sun visor assembly 4, and the guiding bracket 6 is connected to the vehicle body sheet metal 1. An airbag door portion 23 is provided on the ceiling assembly 2. The airbag door portion 23 is located below the side airbag 3 and the guiding bracket 6, and the airbag door portion 23 is provided with a guiding hinge groove 212. The guiding bracket 6 can be a metal stamping part.

[0024] After the side airbag 3 explodes and unfolds, the initial impact force generated by the unfolding of the side airbag 3 acts on the guiding bracket 6. The kinetic energy is absorbed through the plastic deformation of the guiding bracket 6, and the inclined portion 62 is used to guide the unfolded side airbag 3 to the airbag door portion 23. The guiding hinge groove 212 of the airbag door portion 23 is a U-shaped groove or a V-shaped groove. The guiding hinge groove 212 enables the airbag door portion 23 to rotate downward, so as to make way for the unfolded side airbag 3 and ensure that the side airbag 3 can unfold to provide protection for the user. The depth of the guiding hinge groove 212 can be 1 / 3 - 1 / 2 of the thickness of the base material 21.

[0025] In this embodiment, as Figure 3 shown, the guiding bracket 6 includes a lapping portion 61, an inclined portion 62, and a guiding portion 63 which are arranged in sequence from top to bottom. The lapping portion 61 is welded to the vehicle body sheet metal 1. The inclined portion 62 inclines downward along the direction approaching the side airbag 3. The lower end of the guiding portion 63 is suspended. The guiding portion 63 can have a certain arc to guide the unfolding direction of the side airbag 3. When the side airbag 3 unfolds, the inclined portion 62 and the guiding portion 63 can undergo plastic deformation, and the included angle between them changes.

[0026] In this embodiment, as Figure 3 shown, a first reinforcing rib 64 is provided at the connecting corner of the inclined portion 62 and the guiding portion 63. A plurality of second reinforcing ribs 65 are spacedly arranged on the inclined portion 62. A plurality of third reinforcing ribs 66 are spacedly arranged on the guiding portion 63. The plurality of second reinforcing ribs 65 and the plurality of third reinforcing ribs 66 are all communicated with the first reinforcing rib 64 and form a fishbone shape. A plurality of fourth reinforcing ribs 67 are spacedly arranged at the connecting corner of the lapping portion 61 and the inclined portion 62. The plurality of second reinforcing ribs 65 and the plurality of fourth reinforcing ribs 67 are arranged alternately.

[0027] The first reinforcing rib 64, the second reinforcing rib 65, and the third reinforcing rib 66 are all convex ribs, and the fourth reinforcing rib 67 is a concave rib.

[0028] The first reinforcing rib 64, the second reinforcing rib 65, the third reinforcing rib 66 and the fourth reinforcing rib 67 together increase the strength of the guiding bracket 6. The staggered arrangement of the second reinforcing rib 65 and multiple fourth reinforcing ribs 67 can make full use of the space of the guiding bracket 6. Arranging more reinforcing structures on the guiding bracket 6 can ensure the overall strength of the guiding bracket 6.

[0029] In this embodiment, as Figure 1 and Figure 5 shown, the ceiling assembly 2 includes a base material 21 and a fabric 22 covering the surface of the base material 21. The mounting hole 413 and the first stress relief structure are both arranged on the base material 21. The first stress relief structure is a plurality of first stress relief grooves 213 spaced around the mounting hole 413, and a plurality of the first stress relief grooves 213 are all communicated with the mounting hole 413; the guiding hinge groove 212 is arranged on one side of the base material 21 facing the cavity 5.

[0030] The fabric 22 is used to ensure the appearance of the ceiling assembly 2, and the base material 21 can serve as the framework of the ceiling assembly 2 to ensure its own strength.

[0031] The first stress relief groove 213 can be a strip-shaped groove with a length of 5 - 10 mm and a width of 0.8 - 1.2 mm. The position and number of the first stress relief grooves 213 are obtained through topology optimization based on the principle of stress equilibrium distribution by simulation analysis.

[0032] In this embodiment, as Figure 2 shown, the ceiling assembly 2 is provided with a bent docking part 24 for docking with the B-pillar 9. The length of the base material 21 of the bent docking part 24 is less than the length of the fabric 22 of the bent docking part 24.

[0033] The length of the base material 21 of the bent docking part 24 can be 4 - 6 mm, and the length of the fabric 22 of the bent docking part 24 increases by 3 - 5 mm on the basis of the base material 21. The bent docking part 24 overlaps with the B-pillar 9, and the bent docking part 24 is inclined.

[0034] After the side airbag 3 explodes and expands, the bent docking part 24 is separated from the B-pillar 9. Shortening the length of the base material 21 can reduce the separation difficulty between the bent docking part 24 and the B-pillar 9, prevent the ceiling assembly 2 from getting stuck with the B-pillar 9. Shortening the length of the base material 21 in cooperation with the second stress relief groove 214 can jointly ensure that the side airbag 3 can be deployed smoothly, while increasing the length of the fabric 22 can ensure the appearance beauty at the overlapping part of the ceiling assembly 2 and the B-pillar 9. Therefore, this embodiment can take into account both reducing the separation difficulty at the overlapping part with the B-pillar 9 and ensuring the appearance beauty at the overlapping part with the B-pillar 9.

[0035] In this embodiment, as Figure 6As shown, a plurality of second stress relief grooves 214 are arranged at intervals corresponding to the peripheral position of the B-pillar 9 on the base material 21, such as Figure 8 As shown, a plurality of third stress relief grooves 215 are arranged at intervals corresponding to the peripheral position of the C-pillar 10 on the base material 21. The second stress relief grooves 214 and the third stress relief grooves 215 can be U-shaped grooves, V-shaped grooves or strip-shaped grooves. The positions and quantities of the second stress relief grooves 214 and the third stress relief grooves 215 are obtained through topology optimization based on the principle of stress equilibrium distribution by simulation analysis.

[0036] After the side airbag 3 explodes and unfolds, the second stress relief grooves 214 can prevent the roof lining assembly 2 from jamming with the B-pillar 9, and the third stress relief grooves 215 can prevent the roof lining assembly 2 from jamming with the C-pillar 10, ensuring that the side airbag 3 can unfold smoothly.

[0037] In this embodiment, as Figure 9 As shown, the insert reinforcement structure 411 includes a first metal insert embedded in the sun visor mounting seat 41, and positioning holes 412 and mounting holes 413 are provided on the first metal insert.

[0038] The first metal insert is integrally molded with the sun visor mounting seat 41. The positioning holes 412 are used for positioning in the mold, and the mounting holes 413 are used to connect with the vehicle body sheet metal 1 through bolts and nuts.

[0039] In this embodiment, as Figure 7 As shown, it further includes a safety handle 8. The safety handle 8 is embedded with a second metal insert 81. The safety handle 8 is connected to the vehicle body sheet metal 1 through the second metal insert 81. Assembly through holes 217 are provided at the positions of the base material 21 corresponding to the second metal insert 81, and a plurality of fourth stress relief grooves 216 are arranged at intervals around the assembly through holes 217.

[0040] The fourth stress relief grooves 216 can be strip-shaped grooves with a length of 3-8 mm and a width of 0.7-1 mm. The positions and quantities of the fourth stress relief grooves 216 are obtained through topology optimization based on the principle of stress equilibrium distribution by simulation analysis.

[0041] Each stress relief groove is arranged on the base material 21, and the fabric 22 masks each stress relief groove, which can ensure the appearance beauty at the positions of each stress relief groove.

[0042] In summary, after the side airbag 3 explodes and unfolds, a structure for assisting the unfolding of the side airbag in this embodiment can have three-level protection. The cooperative action mechanism of the three-level protection is as follows: The first-level protection: blasting stress guidance.

[0043] The initial impact force generated by the deployment of the side air curtain 3 acts on the guide bracket 6. The kinetic energy is absorbed through the plastic deformation of the guide bracket 6, and the deployed side air curtain 3 is guided to the air curtain door part 23 by the inclined part 62. The guide hinge groove 212 of the air curtain door part 23 is a U-shaped groove or a V-shaped groove. The guide hinge groove 212 enables the air curtain door part 23 to rotate downward, so as to make way for the deployed side air curtain 3 and ensure that the side air curtain 3 can be deployed to provide protection for users.

[0044] The first-level protection can direct the stress to the preset air curtain door part 23 on the roof assembly 2 through the guide bracket 6, which can enhance the stress concentration effect in the initial stage of air curtain deployment, reduce the filling amount of the gas generant by 10 - 15%, and can also form an impact isolation protection for the sun visor assembly 4. Due to the reduced filling amount of the gas generant resulting in a smaller initial impact energy, the structural deformation of the guide bracket 6 and the air curtain door part 23 will dissipate the impact energy. Therefore, the first-level protection can reduce 65% of the impact energy, reduce the stress transmission to the sun visor, reduce the damage to surrounding components, ensure the expansion direction of the side air curtain 3 after blasting, prevent the side air curtain 3 from driving the roof assembly 2 to collide with the sun visor, ensure that the side air curtain 3 bursts out from near the seam as soon as possible, and the faster deployment of the air curtain can improve the safety performance.

[0045] Second-level protection: Blasting stress release.

[0046] The residual stress is transmitted through the roof assembly 2 to the mating parts of the sun visor mounting seat 41 and the roof assembly 2, the mating parts of the safety handle 8 and the roof assembly 2, the mating parts of the B-pillar 9 and the roof assembly 2, and the mating parts of the C-pillar 10 and the roof assembly 2. A plurality of first stress release grooves 213 around the mounting through hole 211, a plurality of fourth stress release grooves 216 around the assembly through hole 217, the second stress release groove 214 around the B-pillar 9, and a plurality of third stress release grooves 215 around the C-pillar 10 can all release the blasting stress. Since the positions of the respective stress release grooves are topologically optimized based on the principle of stress equilibrium distribution through simulation analysis, the orderly deformation of each stress release groove can be achieved when the roof assembly 2 is separated from the mating parts, thereby reducing the stress transmitted to the sun visor assembly 4, the safety handle 8, the B-pillar 9, and the C-pillar 10, and ensuring that the impact loads transmitted to the sun visor assembly 4, the safety handle 8, the B-pillar 9, and the C-pillar 10 do not exceed the safety threshold. Among them, the safety thresholds of different vehicle models are different, for example, it can be 100N. This structure can enable the residual stress to dissipate energy through the deformation of the stress release groove. After testing, the cooperation of the first-level protection and the second-level protection reduces the impact load transmitted to the accessory mounting point by more than 40%.

[0047] Third-level protection: Enhance the strength of the accessory mounting point.

[0048] The first metal insert of the insert reinforcement structure 411 is connected to the vehicle body sheet metal 1 through a screw and a nut, and the insert reinforcement structure 411 and the vehicle body sheet metal 1 form a barb-type interlocking structure. The second metal insert 81 of the safety handle 8 is connected to the vehicle body sheet metal 1 through a screw and a nut, and the second metal insert 81 also forms a barb-type interlocking structure with the vehicle body sheet metal 1. Therefore, the sun visor mounting seat 41 can enhance its connection strength with the vehicle body sheet metal 1 through the insert reinforcement structure 411, and the safety handle 8 can enhance its connection strength with the vehicle body sheet metal 1 through the second metal insert 81, significantly improving the anti-impact performance of the attachment mounting point and preventing the sun visor assembly 4 or the safety handle 8 from falling off due to the airbag burst stress after the side airbag 3 bursts and unfolds, generating flying objects.

[0049] Through the above three-level protection, through the synergistic effect of the three-level energy gradient dissipation and the multi-modal protection mechanism, while ensuring the normal deployment of the side airbag 3, the systematic control of the risk of component detachment in the driver and passenger area is achieved.

[0050] A vehicle in this embodiment includes the above structure for assisting the deployment of the side airbag.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A structure for assisting the deployment of a side air curtain, comprising a body sheet metal (1), a roof assembly (2), a side air curtain (3) and a sun visor assembly (4), wherein a cavity (5) is formed between the body sheet metal (1) and the roof assembly (2), the side air curtain (3) is installed in the cavity (5), and the sun visor assembly (4) is arranged outside the cavity (5), characterized in that: The ceiling assembly (2) is provided with a mounting hole (211), the sun visor assembly (4) comprises a sun visor mounting seat (41), the sun visor mounting seat (41) passes through the mounting hole (211) and is connected to the vehicle body sheet metal (1) via an insert reinforcement structure (411), and a first stress release structure is provided at a peripheral position of the ceiling assembly (2) corresponding to the mounting hole (211).

2. The structure for assisting the deployment of side curtain airbags according to claim 1, characterized in that: The vehicle further comprises a guide bracket (6) disposed in the cavity (5), the guide bracket (6) being located on a side of the side air curtain (3) facing the sun visor assembly (4), and the guide bracket (6) being connected to the vehicle body sheet metal (1); an air curtain door portion (23) being disposed on the ceiling assembly (2), the air curtain door portion (23) being located below the side air curtain (3) and the guide bracket (6), and the air curtain door portion (23) being provided with a guide hinge groove (212).

3. The structure for assisting the deployment of side curtain airbags according to claim 2, characterized in that: The guide bracket (6) comprises an overlap portion (61), an inclined portion (62) and a guide portion (63) which are arranged in sequence from top to bottom, the overlap portion (61) being welded to the vehicle body sheet metal (1), the inclined portion (62) being inclined from top to bottom in a direction close to the side air curtain (3), and the lower end of the guide portion (63) being suspended in the air.

4. The structure for assisting the deployment of side curtain airbags according to claim 3, characterized in that: A first reinforcing rib (64) is arranged at a connecting corner between the inclined portion (62) and the guiding portion (63); a plurality of second reinforcing ribs (65) are arranged at intervals on the inclined portion (62); a plurality of third reinforcing ribs (66) are arranged at intervals on the guiding portion (63); the plurality of second reinforcing ribs (65) and the plurality of third reinforcing ribs (66) are all connected to the first reinforcing rib (64) to form a fishbone shape; a plurality of fourth reinforcing ribs (67) are arranged at intervals at a connecting corner between the lap joint (61) and the inclined portion (62); the plurality of second reinforcing ribs (65) and the plurality of fourth reinforcing ribs (67) are arranged in a staggered manner.

5. The structure for assisting the deployment of side curtain airbags according to claim 2, characterized in that: The ceiling assembly (2) comprises a substrate (21) and a fabric (22) covering the surface of the substrate (21); the mounting hole (413) and the first stress release structure are both arranged on the substrate (21); the first stress release structure is a plurality of first stress release grooves (213) arranged at intervals around the mounting hole (413); the plurality of first stress release grooves (213) are all connected to the mounting hole (413); and the guide hinge groove (212) is arranged on a side of the substrate (21) facing the cavity (5).

6. The structure for assisting the deployment of side curtain airbags according to claim 5, characterized in that: The ceiling assembly (2) is provided with a bent docking portion (24) for docking with a B-pillar (9), and the length of the base material (21) of the bent docking portion (24) is less than the length of the fabric (22) of the bent docking portion (24).

7. The structure for assisting the deployment of side curtain airbags according to claim 5, characterized in that: The substrate (21) is provided with a plurality of second stress release grooves (214) at intervals at peripheral positions corresponding to the B-pillar (9), and the substrate (21) is provided with a plurality of third stress release grooves (215) at intervals at peripheral positions corresponding to the C-pillar (10).

8. The structure for assisting the deployment of side curtain airbags according to claim 1, characterized in that: The insert reinforcement structure (411) comprises a first metal insert embedded in the sun visor mounting seat (41), and the first metal insert is provided with a positioning hole (412) and a mounting hole (413).

9. The structure for assisting the deployment of side curtain airbags according to claim 5, characterized in that: It also includes a safety handle (8), wherein the safety handle (8) is embedded with a second metal insert (81), and the safety handle (8) is connected to the body sheet metal (1) via the second metal insert (81); the substrate (21) is provided with an assembly hole (217) at a position corresponding to the second metal insert (81), and a plurality of fourth stress release grooves (216) are provided at intervals around the assembly hole (217).

10. A vehicle, characterized in that: It comprises a structure for assisting the deployment of a side curtain airbag as described in any one of claims 1 to 9.

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