Safety air bag device under zero-gravity seat sitting posture and automobile

Abstract

The invention discloses a safety air bag device in a zero-gravity seat sitting posture and an automobile, the safety air bag device in the zero-gravity seat sitting posture comprises an air bag module support and a foot air bag, and the air bag module support is installed in front of a seat; when an air bag of the foot air bag is in an explosion state, a buffering part for supporting the feet of a passenger to abut against and a protruding part for driving a leg support of a rear row seat to be bent and recycled are formed on the side, facing the passenger, of the air bag. According to the safety air bag device in the zero-gravity seat sitting posture, when the gas generator is exploded, the air bag is inflated, the acting force of the front portion on the feet of a passenger is effectively relieved, the leg supports of the back row seat are bent and recycled under the action of the protruding parts in the air bag, the legs of the passenger can be bent conveniently, and the use safety of an automobile is improved.

Description

Technical Field

[0001] This invention relates to the field of automotive safety technology, and in particular to a safety airbag device and automobile for zero-gravity seat posture. Background Technology

[0002] As demands for car seat comfort increase, more and more customers are choosing zero-gravity seats because they minimize the body's need to resist gravity, allowing the body to relax. The zero-gravity seat mode involves the front of the seat cushion frame lifting upwards, the seat cushion frame tilting, the backrest reclining, and the leg rest tilted and extended at the front of the seat cushion.

[0003] In zero-gravity riding mode, occupants recline semi-reclined in the seat, as... Figure 1 As shown. In the event of a collision while the vehicle is in motion, the occupant is prone to sliding relative to the seat. However, the existing traditional restraint system's seat belts are insufficient in restraining the semi-tilted torso, resulting in a greater range of inertial movement of the upper body. In a normal seated collision, the dummy's feet are supported by the foot pedals, and the dummy's lower legs are supported, causing relative movement between the dummy's legs and knees.

[0004] like Figure 2 As shown, during a collision at a large angle, the dummy's lower legs are supported by the leg rest 02, with both feet dangling in the air. This causes the entire lower limb to be thrown forward, significantly increasing the displacement of the legs and knees, as well as the impact speed and energy against the front seat or dashboard. The dummy's lower legs experience severe impact with the front dashboard or seat frame. Therefore, in a semi-reclined or supine position, the occupant's feet impact the backrest of the front seat 01, contacting the rigid frame of the front seat 01 backrest. The uneven force on the feet causes injuries to the occupant's lower legs and knees, and also impacts the back of the front driver / occupant, resulting in injury to the driver / occupant. This indicates a low level of vehicle safety.

[0005] Therefore, how to improve the safety of automobile use is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] The purpose of this invention is to provide an airbag device for zero-gravity seating posture to improve vehicle safety. Another purpose of this invention is to provide a vehicle including the above-described airbag device for zero-gravity seating posture.

[0007] The zero-gravity seat posture safety airbag device provided in this application includes an airbag module bracket and a foot airbag. The airbag module bracket is installed in front of the seat. When the airbag of the foot airbag is deployed, the side of the airbag facing the occupant forms a buffer part that supports the occupant's foot and a protrusion that drives the leg rest of the rear seat to bend and retract.

[0008] Optionally, in the airbag device under the zero-gravity seat posture described above, when the airbag is in the ignition state, the thickness of the airbag gradually increases from top to bottom along the vehicle's driving direction, and the side of the airbag facing the occupant forms a step as the protrusion.

[0009] Optionally, in the airbag device for zero-gravity seat posture described above, along the width direction of the vehicle, the airbag is provided with two protrusions in sequence, and the buffer portion is formed by the indentation between the two protrusions on the airbag.

[0010] Optionally, in the airbag device for zero-gravity seat posture described above, when the airbag is in the detonation state, the position on the protrusion that abuts against the leg rest forms a slope that gradually tilts downward toward the airbag, so as to guide the leg rest to bend and retract.

[0011] Optionally, in the above-mentioned airbag device for zero-gravity seat posture, the airbag module bracket includes:

[0012] The bracket, wherein the housing is mounted on the bracket;

[0013] A first connector is mounted on the bracket;

[0014] The second connector is installed on the front seat, and the first connector and the second connector are fixedly connected.

[0015] Optionally, in the above-mentioned airbag device for zero-gravity seat posture, multiple first connectors and multiple second connectors are provided, and they are fixedly connected one-to-one.

[0016] Optionally, in the airbag device under the zero-gravity seat posture described above, the first connector and the second connector are arranged sequentially along the width direction of the vehicle, and the fixing points of two adjacent first connectors and second connectors are staggered in the height direction.

[0017] Optionally, in the above-mentioned airbag device for zero-gravity seat posture, the first connector and the second connector are threadedly connected by a threaded fastener. The threaded fastener includes a stud fixedly connected to the first connector, and the second connector is provided with a through hole for the stud to pass through. The nut of the threaded fastener is threadedly connected to the stud, and the end face of the nut abuts against the end face of the second connector.

[0018] Optionally, in the airbag device for the zero-gravity seat posture described above, the angle of the airbag is smoothly transitioned after the airbag is deployed.

[0019] An automobile includes a front seat frame and a zero-gravity seat posture airbag device installed below the front seat frame, wherein the zero-gravity seat posture airbag device is any of the zero-gravity seat posture airbag devices described above.

[0020] In the above technical solution, the airbag device for zero-gravity seat posture provided by the present invention includes an airbag module bracket and a foot airbag. The airbag module bracket is installed in front of the seat. When the airbag of the foot airbag is in the ignition state, the side of the airbag facing the occupant forms a buffer part that supports the occupant's foot to abut and a protrusion that drives the leg rest of the rear seat to bend and retract.

[0021] As described above, in the zero-gravity seat posture airbag device provided in this application, when the gas generator is ignited, the airbag is inflated, effectively reducing the force on the occupant's feet from the front. Under the action of the protrusion in the airbag, the leg rest of the rear seat bends and retracts, making it easier for the occupant's legs to bend, thus improving the safety of the vehicle. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0023] Figure 1 This is a diagram illustrating the traditional state of a car during a collision.

[0024] Figure 2 This is a schematic diagram of the state of a car during a collision, provided in an embodiment of the present invention.

[0025] Figure 3 This is a diagram showing the installation position of the airbag device provided in an embodiment of the present invention;

[0026] Figure 4 This is a diagram showing the installation position of the second connector provided in an embodiment of the present invention.

[0027] Figure 5 This is a diagram showing the installation position of the first connector provided in an embodiment of the present invention.

[0028] Figure 6 This is a front view of the airbag device provided in an embodiment of the present invention;

[0029] Figure 7 This is an exploded view of the airbag device provided in an embodiment of the present invention;

[0030] Figure 8 A three-dimensional view of the first type of air bag provided in an embodiment of the present invention;

[0031] Figure 9 This is a schematic diagram of the structure of the first type of air bag provided in an embodiment of the present invention;

[0032] Figure 10 An exploded view of the first type of air bag provided in an embodiment of the present invention;

[0033] Figure 11 A three-dimensional view of the second type of air bag provided in an embodiment of the present invention;

[0034] Figure 12 This is a schematic diagram of the structure of the first type of air bag provided in an embodiment of the present invention;

[0035] Figure 13 This is a three-dimensional diagram of the airbag in the initial state of detonation, provided in an embodiment of the present invention.

[0036] Figure 14 This is a schematic diagram of the structure of the airbag in the initial detonation state provided in an embodiment of the present invention;

[0037] Figure 15 A three-dimensional diagram showing the complete retraction of the leg support after the airbag is detonated, as provided in an embodiment of the present invention.

[0038] Figure 16 This is a schematic diagram of the structure of the airbag provided in an embodiment of the present invention, showing the complete retraction of the leg support after detonation.

[0039] in Figure 1-16 middle:

[0040] 01. Front seats; 02. Leg rests;

[0041] 1. Airbag device; 1-1. Outer shell; 1-2. Airbag; 1-2-1. Side panel; 1-2-2. Main panel; 1-2-3. Step; 1-2-4. Buffer section; 1-2-5. Protrusion; 1-3. Gas generator; 1-4. Airbag module bracket; 1-5. Tear line; 1-6. First connector; 1-7. First connector; 1-8. First connector; 1-9. Second connector; 1-10. Second connector; 1-11. Second connector; 2. Support rod; 3. Front seat frame; 4. Front seat; 5. Leg rest. Detailed Implementation

[0042] The core of this invention is to provide a safety airbag device for a zero-gravity seating position, thereby improving the safety of automobiles. Another core aspect of this invention is to provide an automobile that includes the aforementioned safety airbag device for a zero-gravity seating position.

[0043] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0044] Please refer to Figures 3 to 16 .

[0045] In one specific embodiment, the airbag device for zero-gravity seating provided by this invention includes an airbag module bracket 1-4 and a foot airbag. The airbag module bracket 1-4 is installed in front of the seat, for example, below the front seat frame 3. When the seat is the front passenger seat, the airbag device 1 is installed in front of the front passenger seat, for example, the airbag device 1 can be mounted on the crossbeam bracket, which also meets the requirement of protecting the occupant's lower legs and knees in a zero-gravity seating position. In a specific setting, the airbag device 1 can be mounted on the front seat frame 3, for example, the airbag device 1 can be mounted on the support rod 2.

[0046] The foot airbag includes an airbag 1-2, an outer shell 1-1, a housing, and a gas generator housed within the airbag 1-2. The vehicle airbag controller is connected to the gas generator to control its deployment. Specifically, the material of the airbag 1-2 can be the same as that of the steering wheel-mounted airbag. The airbag 1-2 is encapsulated within the outer shell 1-1, which has a tear line 1-5 for the airbag 1-2 to protrude from. The outer shell 1-1 is mounted on the airbag module bracket 1-4. During initial assembly, the foot airbag is concealed within the seat frame. The airbag deployment mode allows the vehicle airbag controller's sensors to receive a collision signal, triggering the gas generator 1-3 to deploy.

[0047] When the foot airbag 1-2 is deployed, the side of the airbag 1-2 facing the occupant forms a cushioning portion 1-2-4 to support the occupant's foot contact and a protrusion 1-2-5 that drives the leg rest 5 of the rear seat to bend and retract. After deployment, the airbag 1-2 can expand and become spherical. In one embodiment, considering that the foot position is at a lower position of the airbag 1-2, for better foot cushioning, preferably, after deployment, the thickness of the airbag 1-2 gradually increases from top to bottom along the vehicle's driving direction; for example, after deployment, the airbag 1-2 is triangular when viewed from the side. The airbag 1-2 of this invention adopts an innovative design in terms of cut piece design and sewing molding. Specifically, the airbag 1-2 can be fixed internally with straps to fit the zero-gravity seat usage scenario.

[0048] In one specific embodiment, when the airbag 1-2 is in the detonation state, the thickness of the airbag 1-2 gradually increases from top to bottom along the vehicle's direction of travel, and a step 1-2-3 is formed on the side of the airbag 1-2 facing the occupant as a protrusion 1-2-5. For example, as... Figure 8 and Figure 9As shown, after the airbag 1-2 is detonated, the side of the airbag 1-2 facing the rear passenger forms a step 1-2-3 to support the passenger's feet. The step 1-2-3 then compresses the leg rest 5 of the rear seat, causing it to bend downwards. In a zero-gravity seat, the lower legs are not restrained, which can easily cause lower limb and knee injuries. This application reduces knee and lower leg injuries by restraining the lower limb posture, preventing lower limb swaying, and absorbing the impact inertial energy of the lower limbs.

[0049] In another specific implementation, such as Figures 11 to 16 As shown, along the width direction of the vehicle, the airbag 1-2 has two protrusions 1-2-5 in sequence, and a buffer part 1-2-4 is formed by the inward indentation between the two protrusions 1-2-5 on the airbag 1-2. In order to facilitate the smooth entry of the foot into the buffer part 1-2-4, the opposing surfaces of the two protrusions 1-2-5 are inclined guide surfaces, so that a flared groove structure is formed between the buffer part 1-2-4 and the protrusions 1-2-5.

[0050] like Figure 14 Preferably, when the air bag 1-2 is in the detonation state, the position on the protrusion 1-2-5 that abuts against the leg support 5 forms a downwardly gradually inclined surface towards the air 1-2, so as to guide the leg support 5 to bend and retract.

[0051] Simultaneously, during the deployment of the airbag 1-2, a force of approximately 800N pushes the leg rest 5 of the zero-gravity seat to retract, reducing interference with the lower limbs. Specifically, the airbag device 1 provided in this application is suitable for the zero-gravity seat posture. During a collision, the airbag 1-2 deploys, and the lower end of the airbag 1-2 instantly pushes the leg rest 5 of the zero-gravity seat to retract. The occupant's feet are securely caught at the step 1-2-3 position of the front airbag 1-2 of the seat. Lifting the legs and bending the knees helps the occupant's body return to an upright position, and the feet contact the airbag 1-2, thereby reducing the rigid injury to the occupant from the feet contacting the seat frame. That is, when the feet are suspended in the air, the airbag 1-2 deploys along the backrest, allowing the feet to make stable contact.

[0052] like Figures 8 to 10 As shown, in one specific embodiment, the airbag 1-2 includes a main piece 1-2-2 and side pieces 1-2-1. Specifically, the main piece 1-2-2 and the side pieces 1-2-1 can be made of the same material. The main piece 1-2-2 is arranged in a ring shape, so that after the airbag 1-2 is detonated, the main piece 1-2-2 faces the rear seat occupant. The two side pieces 1-2-1 are respectively sealed to both ends of the opening of the main piece 1-2-2. The side piece 1-2-1 closest to the rear seat occupant is L-shaped and spliced ​​with the main piece 1-2-2 to form a step 1-2-3. During manufacturing, one side piece 1-2-1 is first sewn to one side of the main piece 1-2-2 with sewing thread; then the other side of the main piece 1-2-2 is sewn to the other side piece 1-2-1 with sewing thread. Specifically, the airbag 1-2 can be made of soft fabric to reduce injury to the occupant's lower legs and knees.

[0053] Through the cutting and structural design of airbags 1-2, and the inverted triangular structural design, after the generator detonates, the gas is transferred from the lower main cavity of airbags 1-2 to the upper small cavity. During the detonation process, airbags 1-2 unfold along the backrest of the front seat 4, compensating for the problem of uneven support force when the feet of the occupants of the zero-gravity seat come into contact with the rigid frame of the front seat 4, which could cause injury to the occupants' lower legs and knees.

[0054] During use, the gas generator 1-3 receives a signal from the controller, triggering its detonation. The outer casing 1-1 tears along tear line 1-5, and the airbag 1-2 emerges from the casing 1-1. Specifically, the airbag 1-2 inflates and deploys upwards along the seat back, moving from the headrest towards the front of the vehicle. Once deployed, the airbag 1-2 forms a three-dimensional airbag, wider at the bottom and narrower at the top, conforming to the rearward tilt of the front seat 4, creating a zero-gravity seating position where the occupant's toes point towards the front of the vehicle. After deployment, the airbag 1-2 controls the occupant's foot movement, protecting their lower legs and knees, effectively fulfilling the overall function of the airbag device 1.

[0055] The airbag module bracket 1-4 can be a traditional mounting bracket, which is directly welded and fixed to the corresponding position on the vehicle. Preferably, the airbag module bracket 1-4 includes a bracket, a first connector, and a second connector. The outer shell 1-1 is mounted on the bracket, the first connector is mounted on the bracket, and the second connector is fixed relative to the vehicle frame. For example, the second connector is mounted on the front seat 4. The first connector and the second connector are fixedly connected.

[0056] To improve connection stability, preferably, multiple first and second connectors are provided, and they are fixedly connected one-to-one. For example, the first and second connectors are arranged sequentially along the width direction of the vehicle.

[0057] To further improve connection stability, preferably, the fixing points of two adjacent first and second connectors are staggered in the height direction; for example, two adjacent fixing points are successively positioned vertically in the height direction. Figure 4 and Figure 5 Therefore, the three first connectors are: first connector 1-8, first connector 1-7 and first connector 1-6, and the three second connectors are: second connector 1-9, second connector 1-10 and second connector 1-11. Second connector 1-11 is fixedly connected to first connector 1-8, second connector 1-10 is fixedly connected to first connector 1-7, and second connector 1-9 is fixedly connected to first connector 1-6. Specifically, the fixing points of the first connectors and the three second connectors are arranged at intervals with the same height.

[0058] The first and second connecting parts are connected by threaded fasteners. The threaded fasteners include a stud fixed to the first connecting part; specifically, the stud can be welded to the first connecting part for easy fixation later. The second connecting part has a through hole for the stud to pass through. The nut of the threaded fastener is threaded to the stud, and the end face of the nut abuts against the end face of the second connecting part. The threaded fasteners secure the first and second connecting parts, facilitating assembly and disassembly.

[0059] To reduce the injury to the occupants after the airbags 1-2 are detonated, preferably, the corners of the airbags 1-2 are smoothly transitioned after detonation.

[0060] This application provides a vehicle comprising a front seat frame 3 and a zero-gravity seat posture airbag device 1 installed below the front seat frame 3. The zero-gravity seat posture airbag device 1 is any of the aforementioned zero-gravity seat posture airbag devices 1. The specific structure of the airbag device 1 has been described above. This application includes the aforementioned airbag device 1 and also has the aforementioned technical effects.

[0061] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0062] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A safety airbag device for use in a zero-gravity seat posture, characterized in that, It includes an airbag module bracket (1-4) and a foot airbag. The airbag module bracket (1-4) is installed in front of the seat. When the airbag (1-2) of the foot airbag is in the detonation state, the airbag (1-2) forms a buffer part (1-2-4) on the side facing the occupant to support the occupant's foot and a protrusion (1-2-5) that drives the leg rest (5) of the rear seat to bend and retract.

2. The airbag device for zero-gravity seat posture according to claim 1, characterized in that, When the airbag (1-2) is in the detonation state, the thickness of the airbag (1-2) gradually increases from top to bottom along the vehicle's driving direction, and the side of the airbag (1-2) facing the occupant forms a step (1-2-3) as the protrusion (1-2-5).

3. The airbag device for zero-gravity seat posture according to claim 1, characterized in that, Along the width direction of the vehicle, the air bag (1-2) is provided with two protrusions (1-2-5) in sequence, and the buffer part (1-2-4) is formed by the inward indentation between the two protrusions (1-2-5) on the air bag (1-2).

4. The airbag device for zero-gravity seat posture according to claim 1, characterized in that, When the air bag (1-2) is in the detonation state, the protrusion (1-2-5) that abuts against the leg support (5) forms a slope that gradually slopes downward toward the air bag (1-2) to guide the leg support (5) to bend and retract.

5. The airbag device for zero-gravity seat posture according to claim 1, characterized in that, The airbag module support (1-4) includes: A bracket is provided, on which the outer shell (1-1) of the foot airbag is mounted; A first connector is mounted on the bracket; The second connector is installed on the front seat, and the first connector and the second connector are fixedly connected.

6. The airbag device for zero-gravity seat posture according to claim 5, characterized in that, Both the first connector and the second connector are provided in multiples, and are fixedly connected one-to-one.

7. The airbag device for zero-gravity seat posture according to claim 6, characterized in that, The first connector and the second connector are arranged sequentially along the width of the vehicle, and the fixing points of two adjacent first connectors and second connectors are staggered in the height direction.

8. The airbag device for zero-gravity seat posture according to claim 5, characterized in that, The first connector and the second connector are threadedly connected by a threaded fastener. The threaded fastener includes a stud fixedly connected to the first connector. The second connector has a through hole for the stud to pass through. The nut of the threaded fastener is threadedly connected to the stud, and the end face of the nut abuts against the end face of the second connector.

9. The airbag device for zero-gravity seat posture according to any one of claims 1-8, characterized in that, After the air bag (1-2) is detonated, the corner of the air bag (1-2) is smoothly transitioned.

10. A car, characterized in that, It includes a front seat frame (3) and a zero-gravity seat posture airbag device installed under the front seat frame (3), wherein the zero-gravity seat posture airbag device is the zero-gravity seat posture airbag device according to any one of claims 1-9.

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