Ceiling curtain airbag for vehicle

Abstract

The utility model relates to the field of automobile safety, in particular to a ceiling curtain type safety airbag for a vehicle, which comprises an airbag assembly, a gas generator and a dry hanging ring assembly, a skylight guide rod assembly comprises a guide rod and a guide rod limiting block arranged on the guide rod, and the guide rod limiting block is integrally provided with a guide slope and a stop surface; the lifting ring assembly comprises a lifting ring body and a lifting ring limiting piece, the lifting ring limiting piece is provided with a guide rod mounting hole and a lifting ring sliding hole, and an elastic lifting ring guide stop piece is arranged on the inner side face of the lifting ring sliding hole. According to the technical scheme, when a vehicle rolls and collides, the air bag assembly can be rapidly expanded and unfolded along the air bag guide rod assembly to cover the skylight, the position of the air bag assembly is restrained through the cooperation of the guide rod limiting block and the hanging ring guide stop piece after the air bag assembly is unfolded, the displacement amount of the air bag when a passenger collides with the air bag is reduced, and the safety of the passenger is improved. Therefore, the protection performance of the ceiling curtain type safety air bag is maximized.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of automobile safety technology, in particular to a roof curtain type air bag for vehicle. BACKGROUND

[0002] The existing air bag commonly used in vehicle includes driver front air bag (DAB, Driver Air Bag), passenger front air bag (PAB, Passenger Air Bag) and knee front air bag (KAB, Knee Air Bag) for unfolding when the vehicle collides frontally, side air bag (SAB, Side Air Bag), side curtain air bag (CAB, Curtain Air Bag) and far side air bag (FSAB, Far Side Air Bag) for unfolding when the vehicle collides laterally; the air bag arranged can reduce the impact force applied to the passenger due to collision when the vehicle has an accident.

[0003] However, when the vehicle rolls in the accident, for the vehicle with sunroof structure, the sunroof may be damaged in the collision process, thereby causing harm to the passenger or causing the passenger to fall out of the vehicle from the damaged sunroof area, so there is an urgent need for a roof air bag to reduce the harm to the passenger when the sunroof is damaged. SUMMARY

[0004] In view of the above problems, the utility model embodiment provides a roof curtain type air bag for vehicle.

[0005] The utility model embodiment provides a roof curtain type air bag for vehicle, which comprises a gas bag assembly arranged at the front end or rear end of the sunroof frame in the folded state, a gas generator arranged on one side of the gas bag assembly, a gas outlet of the gas generator in communication with the gas bag assembly, a plurality of lifting ring assemblies arranged on the two side edges of the gas bag assembly, sunroof guide rod assemblies arranged on the two sides of the sunroof frame, and the lifting ring assemblies are arranged on the sunroof guide rod assemblies, wherein, in the process of the gas generator injecting gas into the gas bag assembly to make the gas bag assembly unfold, the gas bag assembly unfolds and covers the sunroof frame area under the cooperation and guidance of the lifting ring assemblies and the sunroof guide rod assemblies,

[0006] The sunroof guide rod assembly comprises a guide rod and a guide rod limiting block arranged on the guide rod, the guide rod limiting block has a guide slope facing the unfolding direction of the gas bag assembly and a stop surface located at the tail end of the guide slope, and the setting position of the guide rod limiting block is matched with the position of the lifting ring assembly after the gas bag assembly unfolds;

[0007] The lifting ring assembly comprises a lifting ring body and a lifting ring limiting piece, the lifting ring body is connected with the air bag assembly, the lifting ring limiting piece is provided with a guide rod mounting hole and a lifting ring sliding hole which are arranged in parallel and have a reverse 8-shaped cross section, a lifting ring guide stopper with elasticity is arranged on the inner side surface of the lifting ring sliding hole, the guide rod is clamped in the guide rod mounting hole in the folded state of the air bag assembly, the guide rod enters the lifting ring sliding hole from the guide rod mounting hole to guide the air bag assembly to expand during the expanding process of the air bag assembly, and the lifting ring guide stopper passes the guide slope to overcome the guide rod limiting block during the expanding process of the air bag assembly, and the lifting ring guide stopper is in abutment with the stop surface in the corresponding position guide rod limiting block after the air bag assembly is expanded to the position, so that the position of the air bag assembly after expansion is limited.

[0008] Compared with the prior art, the air bag assembly can be quickly inflated and expanded along the air bag guide rod assembly to cover the sunroof when the vehicle rolls and collides, and the position of the air bag assembly is constrained by the cooperation of the guide rod limiting block and the lifting ring guide stopper after expansion, so that the displacement of the air bag when the passenger collides with the air bag is reduced, and the protection performance of the ceiling curtain type air bag is maximized.

[0009] Optionally, the gas generator is fixed with the vehicle body structure through a gas generator support, and the gas generator support comprises a fixing portion for connecting with the vehicle body structure and a mounting portion for clamping the gas generator.

[0010] Optionally, the mounting portion comprises oppositely arranged mounting clamping plates, and the fixing portion comprises T-shaped hooks located at two ends of the gas generator support and a first mounting hole arranged close to the position of one end of the T-shaped hook.

[0011] Optionally, the mounting portion comprises a connecting plate matched with the shape of the gas generator, and the fixing portion comprises two connecting ear plates located at one side of the connecting plate, one of the two connecting ear plates is provided with an L-shaped hook, and the other connecting ear plate is provided with a flange hook.

[0012] Optionally, the air bag assembly comprises an air bag body, the air bag body is provided with a guide air bag and an air bag fixing piece on the side close to the gas generator, the gas outlet of the gas generator is arranged in the guide air bag and is in sealing connection with the guide air bag, the air bag body is provided with peripheral sewing lines on the edge and is provided with first air cavity chamber sewing lines and second air cavity chamber sewing lines inside; the first air cavity chamber sewing lines and the second air cavity chamber sewing lines divide the inside of the air bag body into two chambers.

[0013] Optionally, the first air cavity chamber sewing lines comprise first U-shaped sewing lines with openings away from the guide air bag, the inside of the first U-shaped sewing lines is provided with second U-shaped sewing lines, and the openings of the second U-shaped sewing lines are opposite to the first U-shaped sewing lines.

[0014] The second air cavity chamber sewing lines comprise third U-shaped sewing lines arranged in parallel, and the openings of the third U-shaped sewing lines are away from the first cavity chamber sewing lines.

[0015] Optionally, the lower side of the airbag assembly in the folded state is provided with a mounting guide bracket, the mounting guide bracket comprises a bracket body for supporting the airbag assembly in the folded state, one side of the bracket body is provided with a mounting surface in inverted L-shaped cross section, and the mounting surface is provided with a second mounting hole matched with the airbag fixing plate.

[0016] Optionally, the airbag body is provided with airbag ear plates on both sides for connecting with the lifting ring body.

[0017] Optionally, the diameter of the guide rod mounting hole is matched with the diameter of the guide rod, and a limiting structure is arranged on the inner side of the guide rod mounting hole, for fixing the airbag assembly on both sides when the airbag assembly is mounted on the vehicle body in the folded state, to prevent noise caused by relative movement between the lifting ring assembly and the guide rod during vehicle driving.

[0018] Optionally, the diameter of the lifting ring sliding hole is greater than the diameter of the guide rod. BRIEF DESCRIPTION OF DRAWINGS

[0019] The drawings described herein are used to provide further understanding of the present application, constitute a part of this application, and do not constitute a limitation of the present application. In the drawings:

[0020] Figure 1 A schematic diagram of the overall structure of a roof curtain type airbag for a vehicle is provided for the embodiment of the present application;

[0021] Figure 2 A schematic diagram of the mounting position of a roof curtain type airbag for a vehicle is provided for the embodiment of the present application;

[0022] Figure 3 A schematic diagram of the local structure of a sunroof guide rod assembly is provided for the embodiment of the present application;

[0023] Figure 4 A schematic diagram of the structure of the lifting ring assembly and the sunroof guide rod assembly of the airbag assembly in the folded state is provided for the embodiment of the present application;

[0024] Figure 5 A schematic diagram of the structure of the lifting ring assembly and the sunroof guide rod assembly of the airbag assembly in the unfolded state is provided for the embodiment of the present application;

[0025] Figure 6 A schematic diagram of the structure of the guide rod limiting block and the lifting ring guide stop plate during the unfolding process of the airbag assembly is provided for the embodiment of the present application;

[0026] Figure 7 A schematic diagram of the structure of the guide rod limiting block and the lifting ring guide stop plate after the unfolding of the airbag assembly is provided for the embodiment of the present application;

[0027] Figure 8 A gas generator support assembly structure schematic view is provided for the embodiment of the utility model.

[0028] Figure 9 A gas generator support structure schematic view is provided for the embodiment of the utility model.

[0029] Figure 10 Another gas generator support assembly structure schematic view is provided for the embodiment of the utility model.

[0030] Figure 11 Another gas generator support structure schematic view is provided for the embodiment of the utility model.

[0031] Figure 12 A mounting guide support structure schematic view is provided for the embodiment of the utility model.

[0032] Figure 13 A gas bag assembly structure schematic view is provided for the embodiment of the utility model.

[0033] Wherein, 00, sunroof frame;10, gas bag assembly;20, mounting guide support;30, sunroof guide rod assembly;31, guide rod;32, guide rod limit block;33, guide slope;34, stop surface;40, gas generator;50, gas generator support;51, mounting clamping plate;52, T-shaped hook;53, connecting plate;54, connecting ear plate;55, L-shaped hook;56, flange hook;60, clamp;70, gas bag fixing piece;80, gas bag body;81, peripheral sewing line;82, first gas chamber sewing line;83, second gas chamber sewing line;84, first gas chamber;85, second gas chamber;86, connecting airflow channel;87, gas bag ear piece sewing line;88, gas bag fixing piece sewing line;90, gas bag ear piece;100, lifting ring assembly;101, lifting ring body;102, lifting ring limit piece;103, lifting ring gas bag ear piece mounting hole;104, lifting ring guide stop piece;105, guide rod mounting hole;106, lifting ring sliding hole;110, guide gas bag. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further described in detail below by combining with the embodiment and drawings. Herein, the schematic embodiment of the utility model and its description are used to explain the utility model, but not as the limitation of the utility model.

[0035] Referring to Figures 1-13The utility model discloses a kind of roof curtain type airbags for vehicle, including the airbag assembly 10 being arranged in sunroof frame 00 front end or rear end under folding state, airbag assembly 10 one side is provided with gas generator 40, the gas outlet of gas generator 40 is communicated with airbag assembly 10, airbag assembly 10 is provided with several ring assemblies 100 on two sides, sunroof frame 00 two sides are provided with sunroof guide rod assembly 30, ring assembly 100 is set on sunroof guide rod assembly 30, when gas generator 40 is rushed into gas into airbag assembly 10, airbag assembly 10 is unfolded and covers sunroof frame 00 area under the cooperation and guiding effect of ring assembly 100 and sunroof guide rod assembly 30 during the process that airbag assembly 10 is unfolded,

[0036] Sunroof guide rod assembly 30 includes guide rod 31 and guide rod limiting block 32 being arranged on guide rod 31, guide rod limiting block 32 has the guide slope 33 of facing airbag assembly 10 unfolding direction as a whole and the stop surface 34 at the tail end of guide slope 33, and the setting position of guide rod limiting block 32 is adapted with the position of ring assembly 100 after airbag assembly 10 unfolds;

[0037] Ring assembly 100 includes ring body 101 and ring limiting piece 102, ring body 101 is connected with airbag assembly 10, ring limiting piece 102 has guide rod mounting hole 105 and ring sliding hole 106, which are arranged in parallel and communicated with inverted 8-shaped cross section, ring guiding stop piece 104 with elasticity is arranged on the inner side of ring sliding hole 106, guide rod 31 is clamped in guide rod mounting hole 105 under the folding state of airbag assembly 10, guide rod 31 enters ring sliding hole 106 from guide rod mounting hole 105 to guide airbag assembly 10 to unfold during the process that airbag assembly 10 is unfolded, and ring guiding stop piece 104 passes through guide slope 33 and overcomes guide rod limiting block 32 during the process that airbag assembly 10 is unfolded, ring guiding stop piece 104 is abutted with the stop surface 34 in corresponding position guide rod limiting block 32 after airbag assembly 10 is unfolded to position, to limit the position of airbag assembly 10 after unfolding.

[0038] In implementation, the above-mentioned front end and rear end are relative to vehicle, the front end is close to the head of vehicle, and the rear end is close to the tail; Guide rod 31 can be made of metal material with predetermined parameters, guide rod limiting block 32 is formed by injection molding or plastic packaging process, and the material can be plastic, rubber and the like.

[0039] Ring body 101 can be made of metal material, and ring limiting piece 102 can be made of plastic, silica gel, rubber and the like by injection molding.

[0040] Airbag assembly 10 can be a one-time forming safety airbag structure, and can also adopt sewing, gluing and film covering forms.

[0041] In the embodiment, the gas generator 40 is fixed to the vehicle body structure through the gas generator bracket 50, which comprises a fixing part for connecting with the vehicle body structure and a mounting part for clamping the gas generator 40; the gas generator bracket 50 can be arranged in the folded parallel state with the gas generator 40 and the airbag assembly 10, so that the gas generator 40 is separated from the airbag assembly 10 by a predetermined distance, and is fixed together with the gas generator 40 and the guide airbag 110 through the clamp 60.

[0042] Specifically, the mounting part comprises oppositely arranged mounting clamping plates 51, and the fixing part comprises T-shaped hooks 52 located at both ends of the gas generator bracket 50 and a first mounting hole arranged near the position of one end of the T-shaped hook 52.

[0043] Alternatively, the mounting part comprises a connecting plate 53 matched with the shape of the gas generator 40, and the fixing part comprises two connecting ear plates 54 located on one side of the connecting plate 53, one of the two connecting ear plates 54 is provided with an L-shaped hook 55, and the other connecting ear plate 54 is provided with a flange hook 56.

[0044] In the embodiment, the airbag assembly 10 comprises an airbag body 80, the airbag body 80 is provided with a guide airbag 110 and an airbag fixing sheet 70 on the side close to the gas generator 40, the gas outlet of the gas generator 40 is arranged in the guide airbag 110 and is sealingly connected with the guide airbag 110, the airbag body 80 is provided with a peripheral sewing line 81 at the edge and is provided with a first air chamber sewing line 82 and a second air chamber sewing line 83 inside; the first air chamber sewing line 82 and the second air chamber sewing line 83 divide the airbag body 80 into two chambers.

[0045] That is, into a first air chamber 84 and a second air chamber 85, the first air chamber 84 is used to cover the sunroof area above the rear row of passengers, and the second air chamber 85 is used to cover the sunroof area above the front row of passengers.

[0046] The airbag fixing sheet 70 is fixedly sewn with the airbag body 80 through an airbag fixing sheet sewing line 88.

[0047] The peripheral sewing line 81 extends along the length and width directions of the vehicle, thereby controlling the overall size of the airbag body 80, and cooperates with the first air chamber sewing line 82 and the second air chamber sewing line 83 to form the first air chamber 84, the second air chamber 85 and the connecting air flow channel 86 therebetween.

[0048] The air guide bag 110 can be provided in a J shape for connecting the gas generator 40 and the air bag body 80, and can be connected to the first air chamber 84 in a direction parallel to the length of the air bag body 80, while branching into two channels on the left and right, so that the gas flows uniformly from both sides to the first air chamber 84 and the second air chamber 85. Of course, the specific form of the air guide bag 110 is not limited to the structure described above, and can be changed according to the application of the vehicle body, the arrangement position of the air bag assembly 10, the number of gas generators 40, the number and shape of the air chambers in the air bag body 80.

[0049] Specifically, the first air chamber sewing line 82 includes a first U-shaped sewing line with an opening facing away from the air guide bag 110, and a second U-shaped sewing line is arranged inside the first U-shaped sewing line, and the opening of the second U-shaped sewing line is opposite to that of the first U-shaped sewing line.

[0050] The second air chamber sewing line 83 includes a third U-shaped sewing line arranged in parallel, and the opening of the third U-shaped sewing line faces away from the first chamber sewing line 82.

[0051] The gas generated by the gas generator 40 can be guided from the two channels formed by the peripheral sewing line 81 and the first air chamber sewing line 82 to the first air chamber 84, and from the two channels formed by the peripheral sewing line 81 and the second air chamber sewing line 83 to the second air chamber 85, and from the I-shaped channel between the second air chamber sewing lines 83 to the second air chamber 85. In this way, the air bag body 80 can be rapidly and uniformly deployed to cover the sunroof frame 00 area. Of course, the shape, size and structure of each sewing line can be changed according to the use of the vehicle body, the arrangement position of the air bag body 80, and the special requirements of the user.

[0052] In the implementation, the lower side of the air bag assembly 10 in the folded state is provided with a mounting guide bracket 20, which includes a bracket body for supporting the air bag assembly 10 in the folded state. One side of the bracket body is provided with a mounting surface in the shape of an inverted L, and the mounting surface is provided with a second mounting hole adapted to the air bag fixing piece 70. The mounting guide bracket 20 can prevent the air bag body 80 from collapsing under the action of gravity in the folded state, guide the detonation direction, prevent interference with other structures of the sunroof, and prevent wear of the air bag body 80.

[0053] In the implementation, the air bag body 80 is provided with air bag tabs 90 on both sides for connecting with the hanger body 101; the air bag body 80 is provided with a plurality of air bag tabs 90 along the longitudinal sides of the vehicle body, the air bag tabs 90 pass through the hanger air bag tab mounting holes 103 provided on the hanger body 101, and are fixed with the air bag body 80 through the air bag tab sewing line 87, so as to connect the hanger assembly 100 and the air bag assembly 10 together; of course, the air bag tabs 90 can also be integrated with the air bag body 80, and the specific integrated or split structure can be determined according to the manufacturing requirements, which is not limited here.

[0054] When the gas generator 40 generates gas, the air bag body 80 receives the gas and expands, the air bag tabs 90 are pulled by the expansion force of the air bag body 80, the guide rod 31 is pulled into the hanger sliding hole 106 from the guide rod mounting hole 105, and under the cooperation of the hanger sliding hole 106 and the guide rod 31, the air bag body 80 is driven to expand along the guide rod 31.

[0055] In the implementation, the diameter of the guide rod mounting hole 105 is matched with the diameter of the guide rod 31, and a limiting structure such as a rubber pad is arranged on the inner side of the guide rod mounting hole 105, the guide rod mounting hole 105 and the limiting structure jointly act to fix the air bag assembly 10 on both sides when the air bag assembly 10 is installed on the vehicle body in the folded state, so as to prevent the relative movement between the hanger assembly 100 and the guide rod 31 during the driving of the vehicle and generate noise.

[0056] In the implementation, the diameter of the hanger sliding hole 106 is greater than the diameter of the guide rod 31; during the expansion of the air bag assembly 10, the hanger guide stopper 104 is in contact with the guide slope 33 and deforms, so as to pass the guide rod limiting block 32, when the air bag assembly 10 is completely expanded, the occupant may hit the air bag body 80 due to the influence of the vehicle rollover, at this time, the air bag body 80 will shrink and move, in order to avoid this situation, the hanger guide stopper 104 in the hanger assembly 100 is in contact with the stop surface 34 in the corresponding position of the guide rod limiting block 32 after the air bag assembly 10 is expanded to the position, which limits the position of the hanger assembly 100, that is, limits the position of the air bag assembly 10 after expansion, so as to maximize the protection of the occupant.

[0057] The above only describes the preferred embodiments of the utility model, and is not used to limit the protection scope of the utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model is included in the protection scope of the utility model.

Claims

1. A roof curtain airbag for a vehicle, comprising a gas bag assembly arranged at the front end or the rear end of a sunroof frame in a folded state, a gas generator arranged at one side of the gas bag assembly, a gas outlet of the gas generator being in communication with the gas bag assembly, a plurality of hanger assemblies arranged on the two sides of the gas bag assembly, a sunroof guide rod assembly arranged at the two sides of the sunroof frame, the hanger assemblies being arranged on the sunroof guide rod assembly, and the gas bag assembly being unfolded and covering the area of the sunroof frame under the guidance of the hanger assemblies and the sunroof guide rod assembly during the process of the gas generator injecting gas into the gas bag assembly to unfold the gas bag assembly, characterized in that the sunroof guide rod assembly comprises a guide rod and a guide rod limiting block arranged on the guide rod, the guide rod limiting block has a guide slope facing the unfolding direction of the gas bag assembly and a stop surface at the tail end of the guide slope, and the arrangement position of the guide rod limiting block is matched with the position of the hanger assemblies after the gas bag assembly is unfolded. The hanger assembly comprises a hanger body and a hanger limiting member, the hanger body is connected with the gas bag assembly, the hanger limiting member has a guide rod mounting hole and a hanger sliding hole which are arranged in parallel and have a reverse 8-shaped cross section, an elastic hanger guide stopper is arranged on the inner side surface of the hanger sliding hole, the guide rod is clamped in the guide rod mounting hole in the folded state of the gas bag assembly, the guide rod enters the hanger sliding hole from the guide rod mounting hole to guide the unfolding of the gas bag assembly during the unfolding process of the gas bag assembly, and the hanger guide stopper passes the guide rod limiting block through the guide slope during the unfolding process of the gas bag assembly, and the hanger guide stopper abuts against the stop surface in the corresponding position of the guide rod limiting block after the gas bag assembly is unfolded, so as to limit the position of the unfolded gas bag assembly. The gas generator is fixed to the vehicle body structure through a gas generator support, the gas generator support comprises a fixing part for connecting with the vehicle body structure and a mounting part for clamping the gas generator.

2. The header curtain airbag for a vehicle according to claim 1, characterized in that, The mounting part comprises oppositely arranged mounting clamping plates, the fixing part comprises T-shaped hooks at the two ends of the gas generator support and a first mounting hole arranged near the position of one end of the T-shaped hooks.

3. The header curtain airbag for a vehicle according to claim 2, characterized in that, The mounting part comprises a connecting plate matched with the shape of the gas generator, and the fixing part comprises two connecting ear plates on one side of the connecting plate, one of the connecting ear plates is provided with an L-shaped hook, and the other connecting ear plate is provided with a flange hook.

4. The header curtain airbag for a vehicle according to claim 2, characterized in that, The gas bag assembly comprises a gas bag body, a gas guide bag and a gas bag fixing piece are arranged on the side of the gas bag body close to the gas generator, the gas outlet of the gas generator is arranged in the gas guide bag and is sealingly connected with the gas guide bag, the edge of the gas bag body is provided with an outer peripheral sewing line, and the inside of the gas bag body is provided with a first gas chamber sewing line and a second gas chamber sewing line; the first gas chamber sewing line and the second gas chamber sewing line divide the inside of the gas bag body into two chambers.

5. The header curtain airbag for a vehicle according to claim 1, characterized in that, The first gas chamber sewing line comprises a first U-shaped sewing line with an opening facing away from the gas guide bag, the inside of the first U-shaped sewing line is provided with a second U-shaped sewing line, and the opening of the second U-shaped sewing line is opposite to that of the first U-shaped sewing line; 6. The header curtain airbag for a vehicle according to claim 5, characterized in that, The second gas chamber sewing line comprises a third U-shaped sewing line arranged in parallel, and the opening of the third U-shaped sewing line faces away from the first chamber sewing line. ​ 7. The header curtain airbag for a vehicle according to claim 5, characterized in that, The lower side of the air bag assembly in the folded state is provided with a mounting guide bracket, which comprises a bracket body for supporting the air bag assembly in the folded state, and a mounting surface in inverted L-shaped cross section is arranged on one side of the bracket body, and a second mounting hole adapted to the air bag fixing plate is arranged on the mounting surface.

8. The header curtain airbag for a vehicle according to claim 5, characterized in that, Air bag ear pieces for connecting with the lifting ring body are arranged on both sides of the air bag body.

9. The header curtain airbag for a vehicle according to claim 1, characterized in that, The diameter of the guide rod mounting hole is adapted to the diameter of the guide rod, and a limiting structure is arranged on the inner side of the guide rod mounting hole for fixing the air bag assembly on both sides when the air bag assembly is mounted on the vehicle body in the folded state, preventing relative movement between the lifting ring assembly and the guide rod during vehicle driving and generating noise.

10. The header curtain airbag for a vehicle according to claim 1, characterized in that, The diameter of the lifting ring sliding hole is greater than the diameter of the guide rod.

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