Safety air bag structure and vehicle

Abstract

The utility model provides a safety air bag structure and a vehicle. The safety air bag structure comprises at least one head inner pull belt, an inflation channel, a head cavity and a chest cavity installed on a vehicle body and communicated with an air source. The head cavity is communicated with the chest cavity through an inflation channel; the inner side wall of the head cavity is provided with at least one group of connecting areas which are in one-to-one correspondence with the head inner drawstrings; each group of connecting areas comprises two sub-areas which are oppositely arranged; and each head inner drawstring is connected between the two sub-regions of the same group of connecting regions. According to the safety air bag structure, secondary damage to the head of a passenger is reduced, the contact area between the head cavity and the head is increased, and the protection effect on the passenger is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to vehicle technical field, especially a kind of airbag structure and vehicle. BACKGROUND

[0002] Currently, in side collision accident, it can be simultaneously harmful to driving side or copilot side.But in prior art, only the seat inside of driver side is increased airbag, the protection area of this airbag is smaller, only consider the driving side collision situation, ignore the copilot side occupant collision and the collision situation when angle, therefore, the protection effect to occupant is poorer, still there is great security risk.Moreover, the airbag in prior art is easy to cause secondary injury to occupant in the process of unfolding. SUMMARY

[0003] The utility model provides a kind of airbag structure and vehicle to the technical problem such as the protection effect of airbag structure in prior art to occupant is poorer.

[0004] In view of above technical problem, the utility model embodiment provides an airbag structure, including at least one head inner pull belt, inflation passage, head cavity and chest cavity installed on vehicle body and communicated with gas source;The head cavity is communicated with the chest cavity by the inflation passage;

[0005] The inner side wall of the head cavity is equipped with at least one group of connection regions corresponding to the head inner pull belt;Each group of connection regions includes two oppositely arranged sub-regions;Each head inner pull belt is connected between the two sub-regions of the same group of connection regions.

[0006] Optionally, the head inner pull belt includes at least one first pull belt, the first pull belt is arranged at a preset inclination angle with the preset airflow direction, and the preset inclination angle is 90 degrees.

[0007] Optionally, the first pull belt is provided with a through hole for improving the flow stability of airflow in the head cavity;The through hole is oppositely arranged with the inflation passage.

[0008] Optionally, the head inner pull belt includes at least two second pull belts arranged at intervals, and the second pull belts are arranged parallel to the preset airflow direction.

[0009] The inflation passage is located between the two adjacent second pull belts.

[0010] Optionally, an outer chest pull strap is arranged on the outer side wall of the chest cavity; an installation part is arranged on the chest cavity and connected with the vehicle body; the outer chest pull strap is arranged around the chest cavity and fixed on the installation part; the outer chest pull strap is arranged in parallel with the direction in which the gas source sprays gas into the chest cavity.

[0011] Optionally, the airbag structure further comprises a connecting bolt arranged on the installation part; the chest cavity and the outer chest pull strap are connected with the vehicle body through the connecting bolt; and the inlet of the gas source is arranged at the installation part.

[0012] Optionally, the head inner pull strap comprises a middle section and two connecting sections connected with the opposite ends of the middle section respectively; the two connecting sections are connected with the two sub-regions respectively; the width of the connecting section is greater than that of the middle section; and a transition round corner is arranged at the connecting position of the connecting section and the edge of the middle section.

[0013] Optionally, the connecting section comprises a connecting part connected with the middle section and two arc-shaped convex parts arranged on the opposite sides of the connecting part respectively; and the connecting part and the two arc-shaped convex parts are connected with the sub-regions.

[0014] Optionally, the arc-shaped convex part has an arc-shaped radius ranging from 80 mm to 100 mm.

[0015] A vehicle comprising the airbag structure.

[0016] The airbag structure comprises at least one head inner pull strap, an inflation channel, a head cavity, and a chest cavity arranged on the vehicle body and connected with a gas source; the head cavity is connected with the chest cavity through the inflation channel; the inner side wall of the head cavity is provided with at least one set of connecting regions corresponding to the head inner pull strap; each set of connecting regions comprises two sub-regions arranged oppositely; and each head inner pull strap is connected between the two sub-regions of the same set of connecting regions.

[0017] In the airbag structure, the chest cavity and the head cavity are connected through the inflation channel, thereby improving the corresponding positioning effect of the chest cavity and the head cavity with the head and the chest of the occupant, optimizing the correspondence of the protection of the chest and the head of the occupant, and improving the airbag protection effect. In addition, the head inner pull strap is arranged on the inner side wall of the head cavity to tighten the two sub-regions of the head cavity when the airbag structure is deployed, thereby not only reducing the time required for the complete deployment of the head cavity and reducing the probability of secondary injury to the head of the occupant, but also making the head cavity relatively concave at the corresponding position of the connecting region, increasing the contact area of the head cavity with the head, improving the protection effect of the head, and further improving the protection effect of the occupant. BRIEF DESCRIPTION OF DRAWINGS

[0018] The utility model is further illustrated below in combination with the drawings and embodiments.

[0019] Figure 1 It is the structure schematic diagram of the air bag structure of an embodiment of the utility model when not unfolding.

[0020] Figure 2 It is the structure schematic diagram of the air bag structure of another embodiment of the utility model when not unfolding.

[0021] Figure 3 It is the section structure schematic diagram of the head cavity of the air bag structure of an embodiment of the utility model after unfolding.

[0022] Figure 4 It is the section structure schematic diagram of the head cavity of the air bag structure of another embodiment of the utility model after unfolding.

[0023] Figure 5 It is the structure schematic diagram of the air bag structure of an embodiment of the utility model after unfolding.

[0024] Figure 6 It is the structure schematic diagram of the air bag structure of another embodiment of the utility model after unfolding.

[0025] The reference signs in the specification are as follows:

[0026] 100, head inner pull belt;110, first pull belt;111, through hole;120, second pull belt;130, middle section;140, connecting section;141, connecting part;142, arc convex part;150, transition round corner;200, inflation channel;300, head cavity;400, gas source;500, chest cavity;510, chest outer pull belt;511, connecting hole;520, mounting part;600, connecting bolt. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical schemes and beneficial effects solved by the utility model more clearly understood, the utility model is further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

[0028] It should be understood that the terms "upper", "lower", "left", "right", "front", "back", "middle" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the utility model and simplify the description, and therefore cannot be understood as indicating or implying 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 utility model.

[0029] In the description of the utility model, it is explained that, unless otherwise specified and limited, the terms "installation", "provided with", "sleeved / connected", "connection" and the like should be understood in a broad sense, for example, "connection" can be fixed connection, can also be detachable connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0030] As Figures 1 to 4 The utility model provides a safety air bag structure, including at least one head inside pull belt 100, inflation channel 200, head cavity 300 and the chest cavity 500 that installs on the car body and is connected with gas source 400, head cavity 300 is connected with chest cavity 500 through inflation channel 200, the inner side wall of head cavity 300 is equipped with at least one group of connection areas with head inside pull belt 100 one to one, each group of connection areas includes two subareas that are oppositely arranged, and each head inside pull belt 100 is connected between two subareas of the same group of connection areas.

[0031] In the embodiment, the safety air bag structure can be applied in a vehicle, and can be installed on the side of a vehicle seat in particular. The safety air bag structure includes two states of storage (i.e. not unfolded) and unfolding. When the safety air bag structure is in the storage state, the head inside pull belt 100, the inflation channel 200, the head cavity 300 and the chest cavity 500 are all stored in a preset accommodation space of the vehicle, and neither the head cavity 300 nor the chest cavity 500 is inflated and unfolded. When the safety air bag structure is in the unfolded state (i.e. the chest cavity 500 and the head cavity 300 are inflated by the gas source 400 to unfold), as shown in Figure 5 And Figure 6 The chest cavity 500 is located at the position of the chest of the occupant, so as to buffer and protect the chest of the occupant, and the head cavity 300 is located at the position of the head of the occupant, so as to buffer and protect the head of the occupant.

[0032] It can be understood that the shape of the chest cavity 500 can be set according to actual conditions, as long as it can be at the same level as the chest of the occupant in the vehicle in the unfolded state, so as to buffer and protect the chest of the occupant. The head cavity 300 is connected to the chest cavity 500 through the inflation channel 200, and is further connected to the gas source 400. The shape of the head cavity 300 can be set according to actual conditions, as long as it can be at the same level as the head of the occupant in the vehicle in the unfolded state, so as to buffer and protect the head of the occupant. The head cavity 300 and the chest cavity 500 are generally made of materials with elasticity, and have certain ductility, and the ductility of the head inner pull belt 100 is less than that of the head cavity 300 and the chest cavity 500. Therefore, as shown in Figure 3 and Figure 4 When the head cavity 300 is unfolded, the head inner pull belt 100 can pull the two oppositely arranged sub-regions connected thereto, thereby limiting the extension distance between the two sub-regions, reducing the volume of the unfolded head cavity 300, reducing the unfolding time of the head cavity 300, reducing the probability of head collision of the occupant during unfolding of the head cavity 300, and avoiding secondary injury to the head of the occupant. At the same time, the two sub-regions are relatively concave, so that the head can be embedded in the above-mentioned concave position, thereby increasing the contact area between the head cavity 300 and the head, and relatively reducing the impact force on the head when contacting the head. The inflation channel 200 can also limit the extension at its position, and the position is relatively concave, so that the shoulder of the occupant can be embedded in the above-mentioned concave region, thereby roughly positioning the occupant, avoiding the movement of the occupant, and enabling the head of the occupant to more accurately contact the head cavity 300, and the chest to more accurately contact the chest cavity 500, thereby improving the buffering and protection effect of the head cavity 300 and the chest cavity 500. The two sub-regions can be arranged on the inner side wall of the head cavity 300 as needed, as long as the two sub-regions are not adjacent to each other, so that the volume of the unfolded head cavity 300 can be reduced by the head inner pull belt 100 after connecting the head inner pull belt 100, and the connection region is relatively concave to increase the contact area of the head. The number of head inner pull belts 100 can be set according to actual conditions, and the width and length of the head inner pull belt 100 can be set according to actual conditions, as long as the volume of the unfolded head cavity 300 can be reduced, and the connection region is relatively concave to increase the contact area of the head.

[0033] As Figures 1 to 4As shown in the drawings, in an embodiment, the head cavity 300 is symmetrically arranged, that is, the inner side walls of the head cavity 300 can symmetrically adhere to each other when the head cavity 300 is in the storage state. The two sub-regions are symmetrically arranged on the two inner side walls of the symmetric head cavity 300, so that the head cavity 300 can be symmetrically unfolded during unfolding, thereby improving the stability during unfolding and avoiding shaking of the head cavity 300 during unfolding. The two sub-regions are located at positions substantially in the middle of the symmetrically adhered inner side walls of the head cavity 300, so that the concave region formed by the head inner pull belt 100 can be located at a position substantially in the middle of the head cavity 300 when the head cavity 300 is in the unfolded state, thereby uniformly buffering and protecting the head of the occupant, while reducing stress concentration.

[0034] In the airbag structure of the above-mentioned embodiment of the utility model, the chest cavity 500 and the head cavity 300 connected by the inflation channel 200 improve the corresponding positioning effect of the chest cavity 500 and the head cavity 500 with the head and the chest of the occupant, optimize the correspondence of the protection of the chest and the head of the occupant, and improve the airbag protection effect. In addition, the head inner pull belt 100 is arranged on the inner side wall of the head cavity 300 to pull the two sub-regions of the head cavity 300 when the airbag structure is unfolded. In this way, not only is the time required for complete unfolding of the head cavity 300 reduced, but also the probability of secondary injury to the head of the occupant is reduced; at the same time, the corresponding position of the connection region of the head cavity is relatively concave, the contact area of the head cavity 300 and the head is increased, the protection effect of the head is improved, and the protection effect of the occupant is further improved.

[0035] As shown in the drawings, Figure 1 and Figure 3 As shown in the drawings, in an embodiment, the head inner pull belt 100 includes at least one first pull belt 110, and the first pull belt 110 is arranged at a preset inclination angle with respect to the preset airflow direction. The preset airflow direction refers to the direction of the airflow entering the head cavity 300 from the inflation channel 200. It can be understood that the chest cavity 500 and the head cavity 300 are arranged in a substantially vertical manner, so the direction of the airflow entering the head cavity 300 from the inflation channel 200 is substantially vertical. The first pull belt 110 needs to be arranged at a preset inclination angle with respect to the preset airflow direction, so that the airflow entering from the inflation channel 200 can be blown onto the first pull belt 110, and the first pull belt 110 can be unfolded more quickly.

[0036] It can be understood that the preset inclination angle can be set according to requirements. As shown in the drawings, Figure 1As shown, in an embodiment, the preset inclination angle is 90 degrees. Understandably, the first pull strap 110 is arranged at 90 degrees with the preset air flow direction, thus the first pull strap 110 is arranged in a substantially transverse direction. Figure 5 As shown, the concave region formed by the first pull strap 110 on the head cavity 300 is substantially transverse, at this time, the air flow entering from the inflation channel 200 can be blown onto the first pull strap 110, thereby assisting the first pull strap 110 to be unfolded faster, and the first pull strap 110 can pull the two opposite sub-regions closer after the head cavity 300 is fully unfolded, thereby making the head cavity 300 be tightened from the middle position to be concave to better fit the member's head.

[0037] As shown, Figure 1 and Figure 3 As shown, in an embodiment, the first pull strap 110 is provided with a through hole 111 for improving the stability of air flow in the head cavity 300; the through hole 111 is arranged opposite to the inflation channel 200. Understandably, Figure 3 As shown, after the head cavity 300 is inflated and unfolded, the first pull strap 110 is observed from the inflation channel 200, the unfolding state of the first pull strap 110 is observed, in this embodiment, the direction of air flow flowing from the inflation channel 200 to the head cavity 300 is substantially perpendicular to the first pull strap 110, the air flow acts on the first pull strap 110, and the first pull strap 110 blocks part of the air flow while rapidly unfolding, thus, the through hole 111 arranged on the first pull strap 110 and arranged opposite to the inflation channel 200 can improve the passing amount and passing speed of the air flow from the position of the first pull strap 110, so that the head cavity 300 can be unfolded faster and more uniformly, and the stability of the safety airbag structure is improved.

[0038] As shown, Figure 2 and Figure 4 As shown, in an embodiment, the head inner pull strap 100 includes at least two second pull straps 120 arranged at intervals, the second pull strap 120 is arranged parallel to the preset air flow direction, the preset air flow direction refers to the direction of air flow entering the head cavity 300 through the inflation channel 200; the inflation channel 200 is located between the two adjacent second pull straps 120. Understandably, the two adjacent second pull straps 120 are arranged parallel to the preset air flow direction, thereby improving the passing property of the air flow. Understandably, Figure 4The image shows the unfolded state of the second pull straps 120 as observed from between the two second pull straps 120 after the head cavity 300 has been inflated and unfolded. In this embodiment, the second pull straps 120 being parallel to the preset airflow direction means approximately parallel; a small tilt angle between the second pull straps 120 and the preset airflow direction is also acceptable, as long as the second pull straps 120 are arranged approximately vertically without affecting the airflow effect. In this embodiment, the number of second pull straps 120 can be set to two or more as needed. Each second pull strap 120 will tighten its corresponding two sub-regions, thus forming at least two concave regions on the head cavity 300, such as... Figure 6 As shown, at least two concave regions will give the head cavity 300 a concave surface, which can restrict the movement of the occupant's head, increase the protection range of the head cavity 300 for the head, and better fix the head, thus providing better protection for the head.

[0039] like Figure 1 and Figure 2 As shown, in one embodiment, an external chest strap 510 is provided on the outer wall of the chest cavity 500; a mounting part 520 for connecting to the vehicle body is provided on the chest cavity 500, and the external chest strap 510 is arranged around the chest cavity 500 and fixed on the mounting part 520; the external chest strap 510 is arranged parallel to the direction in which the gas source 400 sprays gas into the chest cavity 500.

[0040] Understandably, the extensibility of the external chest strap 510 is less than that of the chest cavity 500, thereby reducing the volume of the chest cavity 500 after deployment, ensuring airbag stability, controlling the shape of the chest cavity 500 after deployment, and reducing the swaying of the chest cavity 500, thus reducing the oscillation of the head cavity 300. The width of the external chest strap 510 can be set according to actual conditions, as long as it can reduce the volume of the chest cavity 500 after deployment and reduce the swaying of the chest cavity 500. The mounting part 520 is fixedly connected to the vehicle body, and the outer chest strap 510 is fixed to the mounting part 520, that is, the outer chest strap 510 is fixedly connected to the vehicle body. Therefore, when the chest cavity 500 is deployed, most of the stress on the outer chest strap 510 is applied to the vehicle body, avoiding damage to the chest cavity 500. Furthermore, the outer chest strap 510 does not move with the deployment of the chest cavity 500, thus allowing for precise control of the position and shape of the deployed chest cavity 500. The outer chest strap 510 is arranged parallel to the direction of the gas flow, thereby strengthening the impact of the airflow and preventing excessive extension of the chest cavity 500.

[0041] As shown in Figure 1 and Figure 2 shown, in an embodiment, the airbag structure further comprises a connecting bolt 600 installed at the mounting portion 520; the chest cavity 500 and the chest outer pull strap 510 are connected to the vehicle body through the connecting bolt 600; and the inlet of the air source 400 is arranged at the mounting portion 520. It can be understood that the connecting bolt 600 can be arranged at different positions of the mounting portion 520 according to actual conditions, as long as the chest cavity 500 can be connected to the vehicle body and the chest outer pull strap 510 can be installed on the connecting bolt 600. In an embodiment, opposite ends of the chest outer pull strap 510 are provided with connecting holes 511, and the chest outer pull strap 510 is hung on the connecting bolt 600 through the connecting holes 511 to avoid damage to the chest cavity 500 at the mounting portion 520.

[0042] As shown in Figures 1 to 4 shown, in an embodiment, the head inner pull strap 100 comprises a middle section 130 and two connecting sections 140 connected to opposite ends of the middle section 130, respectively; the two connecting sections 140 are connected to the two sub-regions, respectively; and the width of the connecting section 140 is greater than the width of the middle section 130. It can be understood that the length of the middle section 130 can be set according to requirements, such as the distance between the two sub-regions arranged opposite to each other after the head cavity 300 is unfolded. The longer the length of the middle section 130 is, the greater the distance between the two sub-regions arranged opposite to each other after the head cavity 300 is unfolded. The length of the middle section 130 can be set according to actual conditions to control the shape of the head cavity 300 after unfolding. The two connecting sections 140 are used to connect the two sub-regions, respectively, and the width of the connecting section 140 is greater than the width of the middle section 130, which can ensure stable installation of the head inner pull strap 100.

[0043] As shown in Figures 1 to 4 shown, in an embodiment, a transition round corner 150 is arranged at the edge connecting position of the connecting section 140 and the middle section 130. It can be understood that the transition round corner 150 is used to avoid fracture between the connecting section 140 and the middle section 130 due to stress concentration, so that the stress is distributed at the transition round corner 150. The diameter of the transition round corner 150 can be set according to actual conditions, as long as it can avoid fracture between the connecting section 140 and the middle section 130 due to stress concentration.

[0044] As shown in Figures 1 to 4As shown, in an embodiment, the connecting section 140 comprises a connecting part 141 connecting the intermediate section 130, and two arc-shaped protrusions 142 respectively arranged at opposite sides of the connecting part 141, the connecting part 141 and the two arc-shaped protrusions 142 are all connected to the sub-regions. It can be understood that the arc-shaped protrusions 142 are used to avoid the opposite sides of the connecting section 140 from being broken due to stress concentration, so that the stress is distributed on the arc-shaped protrusions 142, while maintaining a good unfolding shape of the head cavity 300. The arc-shaped radius of the arc-shaped protrusions 142 can be set according to actual conditions, as long as the opposite sides of the connecting section 140 can be avoided from being broken due to stress concentration or affecting the unfolding shape of the head cavity 300. In an embodiment, the arc-shaped radius of the arc-shaped protrusions 142 ranges from 80mm to 100mm.

[0045] The utility model embodiment further provides a vehicle comprising the airbag structure. The specific structure of the airbag structure can refer to the above-mentioned embodiments, which will not be repeated here.

[0046] In the vehicle of the above-mentioned embodiments of the utility model, the chest cavity 500 and the head cavity 300 connected by the inflation channel 200 of the airbag structure improve the corresponding positioning effect of the chest cavity 500 and the head cavity 500 with the head and chest of the occupant, optimize the corresponding protection of the chest and head of the occupant, and improve the airbag protection effect. In addition, the head inner pull strap 100 is arranged on the inner side wall of the head cavity 300 to tighten the two sub-regions of the head cavity 300 when the airbag structure is unfolded. In this way, not only the complete unfolding time of the head cavity 300 is reduced, but also the probability of secondary injury to the head of the occupant is reduced. At the same time, the head cavity is relatively concave at the corresponding position of the connecting region, which increases the contact area of the head cavity 300 and the head, improves the protection effect of the head, and further improves the protection effect of the occupant.

[0047] The above is only an embodiment of the airbag structure and the vehicle of the utility model, and does not limit the utility model. Any modification, equivalent replacement and improvement within the spirit and principles of the utility model shall be included in the protection scope of the utility model.

Claims

1. An airbag structure characterized by comprising: The safety airbag structure comprises at least one head inner pull belt, an inflation channel, a head cavity, and a chest cavity mounted on a vehicle body and connected with a gas source; the head cavity is connected with the chest cavity through the inflation channel; At least one set of connection regions corresponding to the head inner pull belts are arranged on the inner side wall of the head cavity; each set of the connection regions comprises two oppositely arranged sub-regions; each head inner pull belt is connected between the two sub-regions of the same set of the connection regions.

2. The airbag structure according to claim 1, characterized by, The head inner pull belt comprises at least one first pull belt arranged at a preset inclination angle with respect to a preset gas flow direction, and the preset inclination angle is 90 degrees.

3. The airbag structure according to claim 2, characterized by, A through hole is arranged on the first pull belt for improving the flow stability of the gas in the head cavity; the through hole is arranged opposite to the inflation channel.

4. The airbag structure according to claim 1, characterized by, The head inner pull belt comprises at least two second pull belts arranged at intervals, and the second pull belts are arranged parallel to the preset gas flow direction. The inflation channel is located between the two adjacent second pull belts.

5. The airbag structure according to claim 1, characterized by A chest outer pull belt is arranged on the outer side wall of the chest cavity; an installation part connected with the vehicle body is arranged on the chest cavity, the chest outer pull belt is arranged around the chest cavity and fixed on the installation part; the chest outer pull belt is arranged parallel to the direction in which the gas source sprays gas into the chest cavity.

6. The airbag structure according to claim 5, characterized by The safety airbag structure further comprises a connecting bolt mounted on the installation part; the chest cavity and the chest outer pull belt are connected with the vehicle body through the connecting bolt; an inlet of the gas source is arranged at the installation part.

7. The airbag structure according to claim 1, characterized by The head inner pull belt comprises a middle section and two connection sections respectively connected to opposite ends of the middle section; the two connection sections are respectively connected to the two sub-regions; the width of the connection section is greater than the width of the middle section, and a transition round corner is arranged at the edge connection position of the connection section and the middle section.

8. The airbag structure according to claim 7, characterized by The connection section comprises a connection part connected to the middle section, and two arc-shaped convex parts respectively arranged on opposite sides of the connection part; the connection part and the two arc-shaped convex parts are connected to the sub-regions.

9. The airbag structure according to claim 8, characterized by The arc-shaped radius of the arc-shaped convex part ranges from 80mm to 100mm.

10. A vehicle characterized by comprising: The safety airbag structure comprises the safety airbag structure according to any one of claims 1 to 9.

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