Vehicle safety air bag and vehicle

Abstract

The utility model relates to the field of vehicle accessories, in particular to a vehicle safety air bag and a vehicle. The vehicle safety air bag comprises an air bag body. A front side surface, a lower concave surface and a rear side surface which are connected in sequence are formed on the upper part of the inflated and expanded air bag body; the front side face is used for making contact with windshield glass of a vehicle, and the rear side face is used for making contact with passengers. From the front of the vehicle to the rear of the vehicle, the lower concave surface is concave downwards in the direction far away from the windshield glass, so that the lower concave surface is gradually far away from the windshield glass. According to the vehicle safety air bag, the downward concave face is arranged between the front side face and the rear side face, the size of the air bag body at the downward concave face is reduced through the inward concave structure of the downward concave face, the respective functions of the front side face and the rear side face are not affected, and therefore the air bag body with the small size can also be applied to vehicle types with large-angle windshield glass.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of vehicle accessories, in particular to a vehicle airbag and a vehicle. BACKGROUND

[0002] The automobile airbag is an important protection device in automobile passive safety protection. For the vehicle model with large angle windshield, since the co-driver airbag is far away from the windshield, a large volume airbag needs to be set to meet the requirements of occupant protection.

[0003] The large volume airbag will cause the volume of the folded module to be large, affecting the layout space of the instrument panel and the modeling surface of the upper surface of the instrument panel. In addition, the reaction force generated by the explosion of the large volume airbag is large, which may cause the splash to exceed the standard, the instrument panel to burst, and other risks. In addition, due to the large volume of the airbag, a single pole gas generator cannot meet the requirements of inflation rate and inflation volume, and a double pole generator needs to be used, resulting in increased cost. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the present application is to provide a vehicle airbag and a vehicle, which can solve the problem that a large volume airbag needs to be set to meet the requirements of occupant protection in a vehicle model with a large angle windshield.

[0005] The present application provides a vehicle airbag, comprising an airbag body;

[0006] The upper part of the airbag body inflated by the gas forms a front side, a concave surface and a rear side connected in sequence; the front side is used to contact the windshield of the vehicle, and the rear side is used to contact the occupant;

[0007] From the front to the rear of the vehicle, the concave surface is concave in the direction away from the windshield, so that the concave surface gradually moves away from the windshield.

[0008] In the above technical solution, further, the inside of the airbag body forms an inflation cavity, which can communicate with the gas generator;

[0009] The inflation cavity comprises a narrowed cavity, a transition cavity and a widened cavity; from the front to the rear of the vehicle, the narrowed cavity, the transition cavity and the widened cavity are connected in sequence, and the width of the transition cavity gradually increases.

[0010] In the above technical solution, further, the airbag body comprises a plurality of connecting panels, and the plurality of connecting panels are connected to each other to form the inflation cavity.

[0011] In the technical scheme, further, the plurality of connection pieces are respectively a main piece and two side pieces, the main piece and the two side pieces form the inflation cavity; and the main piece is connected with the gas generator.

[0012] The two side pieces are arranged in a left-right direction of the vehicle; the main piece is provided with two long edges at two ends in a width direction, and is provided with two wide edges at two ends in a length direction; the two long edges respectively extend along a circumferential edge profile of the two side pieces and are connected with the circumferential edge in correspondence; and the two wide edges are connected with each other.

[0013] In the technical scheme, further, the circumferential edge of the side piece comprises a first edge, a second edge and a third edge connected in sequence;

[0014] The first edge is connected with the long edge, and the main piece forms the front side surface at a position corresponding to the first edge;

[0015] The second edge is connected with the long edge, and the main piece forms the concave surface at a position corresponding to the second edge;

[0016] The third edge is connected with the long edge, and the main piece forms the rear side surface at a position corresponding to the third edge.

[0017] In the technical scheme, further, a lower part of the airbag body inflated and expanded forms an avoiding surface, the avoiding surface is opposite to a display screen of the vehicle, and the avoiding surface is recessed in a direction away from the display screen;

[0018] The circumferential edge of the side piece further comprises an avoiding edge; the avoiding edge is connected with the long edge, and the main piece forms the avoiding surface at a position corresponding to the avoiding edge.

[0019] In the technical scheme, further, the main piece is provided with an inflation hole to be connected with the gas generator;

[0020] The side piece is provided with an exhaust hole;

[0021] An over-flow area of the exhaust hole is smaller than an over-flow area of the inflation hole.

[0022] In the technical scheme, further, the main piece comprises a narrow piece part, a transition part and a wide piece part;

[0023] The narrow piece part is connected with the gas generator;

[0024] Both ends of the narrow piece part are provided with the wide piece part, and the transition part is arranged between the narrow piece part and the wide piece part; a width of the transition part gradually increases from the narrow piece part to the wide piece part.

[0025] The narrow piece part is opposite to the narrow cavity; the transition part is opposite to the transition cavity; and the wide piece part is opposite to the wide cavity.

[0026] In the above technical solution, further, the airbag body further comprises a pull belt.

[0027] The pull belt is located in the inflation cavity; one end of the pull belt is located at the connection between the main piece and the gas generator and connected with the main piece; the other end of the pull belt is located at the connection between the two wide edges and connected with the main piece, and the connection between the two wide edges is close to the connection between the lower concave surface and the rear surface.

[0028] The application also provides a vehicle comprising the vehicle safety airbag.

[0029] Compared with the prior art, the application has the following beneficial effects:

[0030] The vehicle safety airbag provided by the application sets a lower concave surface between the front surface and the rear surface, the inner concave structure of the lower concave surface reduces the volume of the airbag body at this position, and does not affect the functions of the front surface and the rear surface respectively, so that the airbag body with a smaller volume can also be applied to a vehicle model with a large angle windshield.

[0031] The application also provides a vehicle comprising the vehicle safety airbag. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the specific embodiments or the prior art of the application, the drawings needed in the description of the specific embodiments or the prior art will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0033] Figure 1 The structure diagram of the vehicle safety airbag provided by the application;

[0034] Figure 2 The first structure diagram of the airbag body provided by the application;

[0035] Figure 3 The second structure diagram of the airbag body provided by the application;

[0036] Figure 4 The split structure diagram of the airbag body provided by the application.

[0037] In the figure: 101-air bag body; 102-front side; 103-lower concave surface; 104-rear side; 105-windshield; 106-narrowed cavity; 107-transition cavity; 108-widened cavity; 109-main piece; 110-side piece; 111-inflation hole; 112-exhaust hole; 113-long edge; 114-wide edge; 115-first edge; 116-second edge; 117-third edge; 118-avoidance surface; 119-avoidance edge; 120-narrow piece part; 121-transition part; 122-wide piece part; 123-pull tape. DETAILED DESCRIPTION

[0038] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0039] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0040] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0041] Embodiment one

[0042] The vehicle airbag provided in this application is installed on the vehicle's dashboard. The vehicle airbag includes an airbag body 101, which is made of a flexible material. In its normal state, the airbag body 101 is folded and housed within the airbag shell, and is connected to a gas generator. In the event of a collision during vehicle operation, the gas generator ignites the gas generator, producing a large amount of gas. After filtration and cooling, the gas enters the airbag body 101, causing it to rapidly expand and break through the airbag shell in a very short time, forming an elastic air cushion in front of the occupant. The airbag body 101 can also deflate and contract in a timely manner to absorb impact energy, thereby effectively protecting the occupant's head and chest from injury or reducing the severity of injury.

[0043] See Figures 1 to 4 As shown, the upper part of the inflated airbag body 101 forms a front side 102, a concave surface 103, and a rear side 104 connected in sequence; the front side 102 is used to contact the windshield 105 of the vehicle, and the rear side 104 is used to contact the passengers; from the front to the rear of the vehicle, the concave surface 103 is recessed in a direction away from the windshield 105, so that the concave surface 103 gradually moves away from the windshield 105.

[0044] Specifically, for vehicles with a large-angle windshield 105, the angle between the windshield 105 and the dashboard increases, resulting in a larger distance between the windshield 105 and the airbag housing. When the airbag body 101 inflates and expands, the volume of space that needs to be filled between the windshield 105 and the dashboard increases. In this application, the upper part of the inflated airbag body 101 forms a front side 102, a concave surface 103, and a rear side 104 connected in sequence. The head and chest of the occupant contact the rear side 104, while the windshield 105 (i.e., the front window of the vehicle) contacts the expanded front side 102. In the prior art, the transition surface connecting the front side 102 and the rear side 104 generally continues the convex trend of the front side 102. Figure 1 The dashed line shows the outline of the airbag in the prior art. In this application, a concave surface 103 is provided between the front side 102 and the rear side 104. The concave structure of the concave surface 103 reduces the volume of the airbag body 101 at that location without affecting the functions of the front side 102 and the rear side 104, so that the smaller airbag body 101 can also be applied to vehicles with a large-angle windshield 105.

[0045] In an optional embodiment, an inflation chamber is formed inside the air bag body 101, and the air bag body 101 is also provided with an inflation hole 111 connected to a gas generator, so that the inflation chamber can be connected to the gas generator, and the gas generator can inflate the inflation chamber.

[0046] Specifically, such as Figure 3As shown, the inflation cavity includes a narrowed cavity 106, a transition cavity 107 and a widened cavity 108; the narrowed cavity 106, the transition cavity 107 and the widened cavity 108 are sequentially communicated from the front to the rear of the vehicle, and the width of the transition cavity 107 gradually increases. The widened cavity 108 is close to the occupant, and can provide a larger protection range for the occupant. The narrowed cavity 106 is close to the front of the vehicle, and the setting of the narrowed cavity 106 can reduce the volume of the airbag body 101 at this position; and is closer to the gas generator, so that the existence of the narrowed cavity 106 will not affect the inflation speed of the widened cavity 108, so as to ensure that the widened cavity 108 can timely protect the occupant.

[0047] In an optional scheme of the embodiment, the airbag body 101 includes a plurality of connecting panels, and the plurality of connecting panels are connected to each other to form the inflation cavity. Generally, the plurality of connecting panels are connected in the form of sewing to form a bag-shaped structure. Alternatively, the plurality of connecting panels can also be connected in other connection forms such as gluing, as long as the connection between the connecting panels is reliable.

[0048] In an optional scheme of the embodiment, as shown in the figure, Figure 4 The plurality of connecting panels are a main panel 109 and two side panels 110, and the main panel 109 and the two side panels 110 form the inflation cavity. The main panel 109 is provided with an inflation hole 111 to be connected with the gas generator. The two side panels 110 are a left side panel 110 and a right side panel 110 and are arranged in the left-right direction of the vehicle. Two exhaust holes 112 are respectively arranged on the left side panel 110 and the right side panel 110, and the sizes of the exhaust holes 112 are smaller than that of the inflation hole 111, so that the inflow gas flow is greater than the outflow gas flow, the airbag body 101 can be inflated and opened, and the airbag body 101 can slowly deflate and shrink through the exhaust holes 112.

[0049] The two long edges 113 of the main panel 109 are respectively arranged at the two ends of the main panel 109 in the width direction, and the two wide edges 114 of the main panel 109 are respectively arranged at the two ends of the main panel 109 in the length direction. When the main panel 109 and the two side panels 110 are connected, the two long edges 113 respectively extend along the circumferential edges of the two side panels 110 and are connected with the circumferential edges; and the two wide edges 114 are connected with each other, so that the two ends of the main panel 109 in the length direction are closed, thereby forming the inflation cavity. In the left-right direction of the vehicle, the profile of the airbag body 101 is determined by the profile of the circumferential edges of the two side panels 110, and the profile of the circumferential edges of the side panels 110 is shaped so that the front side surface 102, the concave surface 103 and the rear side surface 104 are formed on the main panel 109 between the two side panels 110.

[0050] Specifically, the circumferential edge of the side sheet 110 comprises a first edge 115, a second edge 116 and a third edge 117 connected in sequence. The first edge 115 is arc-shaped and connected with the long edge 113, and the front side 102 of the airbag body 101 is formed at the position corresponding to the first edge 115 of the main sheet 109. The second edge 116 is connected with the rear end of the first edge 115, and an included angle is arranged between the second edge 116 and the windshield 105, so that the rear end of the second edge 116 is away from the windshield 105; and the second edge 116 is connected with the long edge 113, and the concave surface 103 is formed at the position corresponding to the second edge 116 of the main sheet 109, thereby reducing the volume of the airbag body 101. The third edge 117 is connected with the long edge 113, and the rear side 104 adapted to the occupant is formed at the position corresponding to the third edge 117 of the main sheet 109, thereby achieving protection of the occupant.

[0051] In an optional scheme of the embodiment, as shown in Figure 2 the lower part of the inflated and expanded airbag body 101 forms an avoiding surface 118, the avoiding surface 118 is opposite to the display screen of the vehicle, and the avoiding surface 118 is recessed away from the display screen to avoid crushing the display screen by the airbag body 101. Specifically, the circumferential edge of the side sheet 110 further comprises an avoiding edge 119, the avoiding edge 119 is in the form of a groove, the avoiding edge 119 is connected with the long edge 113, and the avoiding surface 118 recessed away from the display screen is formed at the position corresponding to the avoiding edge 119 of the main sheet 109.

[0052] In an optional scheme of the embodiment, the main sheet 109 comprises a narrow sheet part 120, a transition part 121 and a wide sheet part 122; the narrow sheet part 120 is provided with the inflation hole 111 to be connected with the gas generator; both ends of the narrow sheet part 120 are provided with the wide sheet part 122, and the transition part 121 is arranged between the narrow sheet part 120 and the wide sheet part 122; the width of the transition part 121 gradually increases from the narrow sheet part 120 to the wide sheet part 122; the narrow sheet part 120 is opposite to the narrowing cavity 106; the transition part 121 is opposite to the transition cavity 107; and the wide sheet part 122 is opposite to the widening cavity 108.

[0053] In the embodiment, based on the structure described above, it can be known that, in the left-right direction of the vehicle, the thickness dimension of the airbag body 101 is determined by the width of the main sheet 109. The present application provides that the main sheet 109 comprises a narrow sheet part 120, a transition part 121 and a wide sheet part 122. The narrow sheet part 120 is located at the front part of the airbag body 101, and the narrow sheet part 120 and the side sheet 110 form the narrowing cavity 106. The wide sheet part 122 is located at the rear part of the airbag body 101, and the wide sheet part 122 and the side sheet 110 form the widening cavity 108. The transition part 121 is located at the middle part of the airbag body 101, and the transition part 121 and the side sheet 110 form the transition cavity 107.

[0054] Embodiment two

[0055] The vehicle airbag in this second embodiment is an improvement on the above embodiments. The technical content disclosed in the above embodiments will not be described again, and the content disclosed in the above embodiments also belongs to the content disclosed in this second embodiment.

[0056] See Figure 2 and Figure 4 As shown, in an optional embodiment, the air bag body 101 further includes a pull strap 123; the pull strap 123 is located inside the inflation chamber; one end of the pull strap 123 is located at the connection between the main piece 109 and the gas generator and is connected to the main piece 109, and the other end of the pull strap 123 is located at the connection between the two wide edges 114 and is connected to the main piece 109, and the connection between the two wide edges 114 is close to the connection between the concave surface 103 and the rear side surface 104.

[0057] In this embodiment, the pull strap 123 is located inside the air bag body 101, and both ends of the pull strap 123 are connected to the main piece 109 to ensure that the shape of the air bag body 101 does not distort after inflation, thus ensuring the stability of the air bag body 101 after inflation. Specifically, one end of the pull strap 123 can be sewn to the connection point near the main piece 109 and the gas generator to position that end of the pull strap 123, i.e., that end is the fixed end of the pull strap 123. The other end of the pull strap 123 is a movable end and is sewn to the connection point of the two wide edges 114. The two wide edges 114 and the end of the pull strap 123 can be sewn together to make the sewing more secure and reduce the number of operation steps.

[0058] Furthermore, the connection point of the two wide edges 114 is near the connection point of the concave surface 103 and the rear side surface 104, that is, the movable end of the pull strap 123 is near the connection point of the concave surface 103 and the rear side surface 104. By approximating a quadrilateral structure for the side profile of the airbag body 101, the pull strap 123 effectively pulls the airbag body 101 along its diagonal, resulting in better fixation and preventing the airbag body 101 from easily deforming during inflation.

[0059] Example 3

[0060] This application provides a vehicle in embodiment three, which includes the vehicle airbag of any of the above embodiments. Therefore, it has all the beneficial technical effects of the vehicle airbag of any of the above embodiments, which will not be repeated here.

[0061] It should be noted that the above-mentioned embodiments are only used to illustrate but not to limit the technical solutions of the present application; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still make modifications to the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application. In addition, those skilled in the art can understand that the combination of features of different embodiments means that it is within the scope of the present application and forms different embodiments, although some embodiments include certain features rather than other features included in other embodiments.

Claims

1. A vehicle airbag, characterized by, The airbag body includes an airbag body; The upper part of the airbag body inflated by air forms a front side, a concave lower side and a rear side connected in sequence; the front side is used to contact the windshield of the vehicle, and the rear side is used to contact the passenger; From the front to the rear of the vehicle, the concave lower side is concave to the direction away from the windshield, so that the concave lower side gradually moves away from the windshield; The inside of the airbag body forms an inflation cavity which can communicate with the gas generator; The inflation cavity includes a narrow cavity, a transition cavity and a wide cavity; from the front to the rear of the vehicle, the narrow cavity, the transition cavity and the wide cavity are connected in sequence, and the width of the transition cavity gradually increases.

2. The vehicle airbag of claim 1, wherein The airbag body includes a plurality of connection panels, and the plurality of connection panels are connected to each other to form the inflation cavity.

3. The vehicle airbag of claim 2, wherein, The plurality of connection panels are respectively a main panel and two side panels, and the main panel and the two side panels form the inflation cavity; the main panel is connected with the gas generator; The two side panels are arranged in the left-right direction of the vehicle; the two ends of the main panel in the width direction are respectively provided with two long edges, and the two ends of the main panel in the length direction are respectively provided with two wide edges; the two long edges respectively extend along the circumferential edges of the two side panels and are connected with the circumferential edges; and the two wide edges are connected with each other.

4. The vehicle airbag of claim 3, wherein The circumferential edge of the side panel includes a first edge, a second edge and a third edge connected in sequence; The first edge is connected with the long edge, and the main panel forms the front side at the position corresponding to the first edge; The second edge is connected with the long edge, and the main panel forms the concave lower side at the position corresponding to the second edge; The third edge is connected with the long edge, and the main panel forms the rear side at the position corresponding to the third edge.

5. The vehicle airbag of claim 4, wherein, The lower part of the airbag body inflated by air forms an avoiding surface, which is opposite to the display screen of the vehicle, and the avoiding surface is recessed away from the display screen; The circumferential edge of the side panel further includes an avoiding edge; the avoiding edge is connected with the long edge, and the main panel forms the avoiding surface at the position corresponding to the avoiding edge.

6. The vehicle airbag of claim 3, wherein The main panel is provided with an inflation hole to be connected with the above-mentioned gas generator; The side panel is provided with an exhaust hole; The flow area of the exhaust hole is smaller than the flow area of the inflation hole.

7. The vehicle airbag of claim 3, wherein The main panel includes a narrow panel part, a transition part and a wide panel part; The narrow panel part is connected with the gas generator; Both ends of the narrow panel part are provided with the wide panel part, and the transition part is arranged between the narrow panel part and the wide panel part; from the narrow panel part to the wide panel part, the width of the transition part gradually increases; The narrow panel part is opposite to the narrow cavity; the transition part is opposite to the transition cavity; and the wide panel part is opposite to the wide cavity.

8. The vehicle airbag of claim 3, wherein, The airbag body further includes a pull belt; The pull strap is located in the inflation cavity; one end of the pull strap is located at the joint of the main sheet and the inflator and connected with the main sheet, the other end of the pull strap is located at the joint of the two wide edges and connected with the main sheet, and the joint of the two wide edges is close to the joint of the lower concave surface and the rear side surface.

9. A vehicle characterized by comprising: A vehicle airbag comprising the airbag cushion according to any one of claims 1 to 8.

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