A lying-position front-impact occupant protection device, vehicle, and method

Abstract

The application belongs to the technical field of automobiles, and particularly relates to a front collision occupant protection device in a flat lying condition, a vehicle and a method. The device comprises a zero-gravity seat back, a connecting pivot mechanism, an auxiliary linkage linkage device, a foot support mechanism, a main linkage linkage device and a cushion framework. The foot support mechanism is pivotally connected to the main linkage linkage device, one end of the auxiliary linkage linkage device and the cushion framework. The zero-gravity seat back is connected to the connecting pivot mechanism and the cushion framework. The other end of the auxiliary linkage linkage device is connected to the zero-gravity seat back. The device prevents the relative sliding between the occupant and the seat back after the front collision of the vehicle with the zero-gravity seat, reduces the injury of the occupant in the collision, and solves the problem of the secondary injury of the occupant due to the uncoordinated reset of the electric zero-gravity seat and the leg support after the collision.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of automobile technology, in particular to a front collision occupant protection device in flat lying condition, a vehicle and a method. BACKGROUND

[0002] With the improvement of people's living standards, the comfort of the car, especially the comfort of the seat, is more and more valued by car manufacturers. Under such circumstances, zero-gravity seats have emerged. The inspiration for zero-gravity seats comes from NASA's research on neutral body posture (NBP) of astronauts in a zero-gravity environment. Its shape can minimize the need for the body to resist gravity, allowing the human body to be in a relaxed state and increasing the comfort of the occupant. The existing occupant protection in zero-gravity sitting position still uses traditional three-point safety belts and airbags. In the zero-gravity sitting position, the traditional safety belt has weak restraint in the forward direction of the vehicle, and when a collision or sudden braking occurs, the occupant is prone to relative sliding with the seat. The traditional airbag installation position is far from the occupant's head and chest, making it difficult to effectively protect the occupant's head and chest, and there is a significant safety hazard. SUMMARY

[0003] The present application provides a front collision occupant protection device in flat lying condition, a vehicle and a method, which prevents the occupant from sliding relative to the seat back after a front collision of a vehicle equipped with a zero-gravity seat, thereby reducing the injury to the occupant during the collision. In addition, it can also solve the problem of secondary injury to the occupant caused by the simultaneous coordinated reset of the electrically powered zero-gravity seat and leg rest after a collision due to power failure.

[0004] The technical solution of the present application is described below in conjunction with the drawings:

[0005] In a first aspect, the present application provides a front collision occupant protection device in flat lying condition, comprising a zero-gravity seat back 1, a connecting pivot mechanism 2, an auxiliary linkage device 3, a foot rest mechanism 4, a main linkage device 5 and a seat cushion framework 6.

[0006] The foot rest mechanism 4 is pivotally connected to the main linkage device 5, one end of the auxiliary linkage device 3 and the seat cushion framework 6. The zero-gravity seat back 1 is connected to the seat cushion framework 6 through the connecting pivot mechanism 2. The other end of the auxiliary linkage device 3 is connected to the zero-gravity seat back 1.

[0007] Further, the main linkage device 5 defines the main linkage device 5 axis through the pivot point fixed to the seat cushion framework 6, and connects the foot rest mechanism 4 and the zero-gravity seat back 1 through the connecting lever linkage.

[0008] Further, the auxiliary linkage device 3 is adjusted in shape to make the zero-gravity seat backrest 1, the seat cushion framework 6 and the foot support mechanism 4 in the same horizontal plane when the zero-gravity seat is in a flat lying state.

[0009] Further, the foot support mechanism 4 comprises a foot support seat, a stop limiting piece 401, a stop crushing device 402, a foot support leg pedal 403, an airbag box 404 and a foot stop airbag 405; the stop limiting piece 401 is fixedly connected with the foot support seat; the foot stop airbag 405 is connected with the foot support leg pedal 403 through the airbag box 404; and the stop crushing device 402 is fixedly connected with the stop limiting piece 401 and the foot support leg pedal 403 at two ends.

[0010] Further, the stop crushing device 402 comprises a stop crushing front sliding cylinder 4022 and a stop crushing rear sliding cylinder 4023; one end of the stop crushing front sliding cylinder 4022 is connected with the stop limiting piece 401 through a fixing bolt 4021; and one end of the stop crushing rear sliding cylinder 4023 is connected with the foot support leg pedal 403 through a fixing bolt 4021.

[0011] Further, the stop crushing device 402 is provided with a crushing force limiting spring for absorbing collision energy.

[0012] In a second aspect, the present application provides a vehicle comprising a lying condition front collision occupant protection device.

[0013] In a third aspect, the present application provides a lying condition front collision occupant protection method, which is realized by a zero-gravity seat lying condition front collision occupant protection device and comprises the following steps:

[0014] When the occupant is in a normal sitting posture and a collision occurs, since the overall angle of the seat does not reach the activating angle of the foot stop airbag 405, the foot stop airbag 405 is in a dormant state, and the occupant 8 is effectively protected by a conventional occupant face airbag and a three-point safety belt 7 fixed to the zero-gravity seat backrest 1.

[0015] When the occupant is in a lying position and a low-speed collision occurs, the foot support mechanism 4 is adjusted to the optimal position of the occupant 8 by the auxiliary linkage device 3 and the main linkage device 5 without step of the zero-gravity seat back 1, and the overall angle of the seat reaches the activation angle of the foot restraint airbag 405, the foot restraint airbag 405 is activated, and the foot restraint airbag 405 is rapidly ignited within the movement space allowed by the foot restraint airbag 405, and the foot restraint airbag 405 slows down the forward movement of the occupant 8 along the zero-gravity seat back 1 under the action of inertia by applying a leg restraint pressure to the occupant 8; at the same time, the crushing force limiting spring in the leg restraint crushing device 402 is crushed according to the degree of mutual impact between the human body and the armrest, and the collision energy is absorbed to achieve the purpose of protecting the occupant.

[0016] When the occupant is in a lying position and a high-speed collision occurs, the occupant 8 is protected by the leg restraint crushing device 402 while the occupant posture is reset to a normal sitting posture, and the occupant 8 is effectively protected by the traditional occupant face airbag and the three-point safety belt 7, and finally the optimal occupant protection effect of the zero-gravity seat is realized in high-speed, medium-speed and low-speed collisions in normal sitting posture and lying posture; during the reset process of the occupant 8, the foot support mechanism 4 and the zero-gravity seat back 1 are steplessly connected and reset to the normal sitting posture of the foot support mechanism 4 through the auxiliary linkage device 3 and the main linkage device 5, so that the occupant 8 has the best escape space after the collision.

[0017] Further, the activation angle of the foot restraint airbag 405 is greater than or equal to 60° of the zero-gravity seat back 1 and the seat cushion framework 6.

[0018] Further, the movement space allowed by the foot restraint airbag 405 is that the occupant's feet are always kept in clearance with the maximum deployment space of the foot restraint airbag 405 when the occupant is in a lying position.

[0019] The beneficial effects of the present application are:

[0020] 1) The present application can detonate the foot restraint airbag of the foot support mechanism in the event of an accident, so that the foot restraint airbag has a buffering and supporting effect on the occupant's feet, and a leg restraint crushing device is arranged at the connection between the foot restraint airbag and the leg support to minimize the damage to the occupant's feet and legs and reduce the relative sliding between the occupant and the seat, so as to achieve the purpose of reducing the risk of injury to the occupant in a collision;

[0021] 2) The present application can be adjusted between the upright and lying position, while in the process of adjustment according to the zero gravity seat back angle automatically adjust the foot rest mechanism position, so that the passengers are always in a more comfortable body posture; At the same time, according to the overall angle of the seat to determine whether the stop air bag needs to be activated, the device is completely hidden during normal driving, completely without affecting the comfort of the passengers; When the accident occurs, the foot stop safety air bag pops out, which prevents the relative sliding between the passengers and the seat by using the foot stop safety air bag to support the passengers' feet, thereby playing a protective role. In addition, when the overall angle of the seat does not reach the activation angle of the foot stop safety air bag, the foot stop safety air bag is in a dormant state, and the passengers are effectively protected by the traditional driver's face air bag, thereby improving the economic applicability of the whole system;

[0022] 3) The present application simplifies the foot rest movement mechanism, has good stability, and solves the problem that the zero gravity seat and the leg rest cannot be simultaneously reset due to power failure caused by collision, thereby effectively reducing the secondary injury and rescue of passengers. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0024] Figure 1 The seat structure diagram of the zero gravity seat in the normal sitting position of the passenger;

[0025] Figure 2 The seat structure diagram of the zero gravity seat in the lying sitting position of the passenger;

[0026] Figure 3 The seat leg rest structure diagram;

[0027] Figure 4 The seat leg rest structure diagram;

[0028] Figure 5 The stop crushing mechanism structure diagram;

[0029] Figure 6 The stop crushing mechanism internal crushing spring structure diagram;

[0030] Figure 7 The stop crushing mechanism structure diagram when the stop air bag is opened.

[0031] In the drawings:

[0032] 1, zero-gravity seat backrest; 2, connecting pivot mechanism; 3, auxiliary linkage connecting rod device; 4, foot support mechanism; 5, main linkage connecting rod device; 6, cushion framework; 401, stop limiting piece; 402, stop crushing device; 403, foot support leg pedal; 404, airbag box; 405, foot stop airbag; 4021, fixing bolt; 4022, stop crushing front sliding cylinder; 4023, stop crushing rear sliding cylinder. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only 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 work fall within the scope of protection of the present application.

[0034] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. Meanwhile, in the description of the present application, the terms "first", "second", etc. are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0035] Embodiment one

[0036] Reference Figures 1-7 The embodiment provides a frontal collision occupant protection device in a lying condition, which comprises a zero-gravity seat backrest 1, a connecting pivot mechanism 2, an auxiliary linkage connecting rod device 3, a foot support mechanism 4, a main linkage connecting rod device 5 and a cushion framework 6.

[0037] The foot support mechanism 4 is pivotally connected with the auxiliary linkage connecting rod device 3 at one end and the cushion framework 6 through the main linkage connecting rod device 5; the zero-gravity seat backrest 1 is connected with the cushion framework 6 through the connecting pivot mechanism 2; the other end of the auxiliary linkage connecting rod device 3 is connected with the zero-gravity seat backrest 1.

[0038] The main linkage connecting rod device 5 defines a main linkage connecting rod device 5 axis through a pivot point fixed to the cushion framework 6, and connects the foot support mechanism 4 and the zero-gravity seat backrest 1 through a connecting lever linkage.

[0039] The auxiliary linkage connecting rod device 3 is adjusted in shape to achieve that the zero-gravity seat backrest 1, the cushion framework 6 and the foot support mechanism 4 are in the same horizontal plane when the zero-gravity seat is in a lying state.

[0040] The footrest mechanism 4 includes a stopper inside the footrest seat to restrict the movement of the occupant's legs. The stopper includes a U-shaped massage sleeve adapted to the occupant's lower leg and a restraint system device for stopping the movement of the occupant's feet. The massage sleeve is woven from a highly deformable material and is fixedly connected to the legrest through a mounting part. The restraint system device for stopping the movement of the occupant's feet includes a stopper limiter 401, a stopper crushing device 402, a footrest leg pedal 403, an airbag box 404, and a foot stop airbag 405. The stopper limiter 401 is welded to the footrest seat as a whole, and all degrees of freedom of movement are fixed. The foot stop airbag 405 is connected to the footrest leg pedal 403 through the airbag box 404. The two ends of the stopper crushing device 402 are fixedly connected to the stopper limiter 401 and the footrest leg pedal 403.

[0041] The stop crushing device 402 includes a stop crushing front slide 4022 and a stop crushing rear slide 4023; one end of the stop crushing front slide 4022 is connected to the stop limiting member 401 by a fixing bolt 4021; one end of the stop crushing rear slide 4023 is connected to the foot support leg pedal 403 by a fixing bolt 4021.

[0042] The crushing device 402 is equipped with a crushing force limiting spring, which can absorb collision energy evenly according to different collision degrees; at the same time, the foot-stopping airbag 405 is fixed to the leg support foot pedal 403 through the airbag box 404.

[0043] Example 2

[0044] This embodiment provides a vehicle, including a frontal collision occupant protection device for a lying-flat configuration.

[0045] Example 3

[0046] This embodiment provides a frontal collision occupant protection method in a supine driving condition, which is implemented through a frontal collision occupant protection device for a zero-gravity seat in a supine driving condition, including:

[0047] When the occupants are in Figure 1 When a collision occurs in the normal sitting position shown, since the overall angle of the seat does not reach the activation angle of the foot restraint airbag 405, the foot restraint airbag 405 is in a dormant state, and the occupant 8 is effectively protected by the traditional occupant face airbag and the three-point seat belt 7 fixed to the zero-gravity seat back 1.

[0048] The foot-stop airbag 405 is activated at an angle of 60° or greater between the zero-gravity seat back 1 and the seat cushion frame 6.

[0049] When the occupants are in Figure 2When a low-speed collision occurs in the lying posture shown, the foot support mechanism 4 is adjusted by the auxiliary linkage linkage device 3 and the main linkage linkage device 5 to the optimal position of the passenger 8 lying on the zero-gravity seat back 1 without step, and the overall angle of the seat reaches the activation angle of the foot stop airbag 405, the foot stop airbag 405 is activated, and the foot stop airbag 405 is rapidly ignited within the movement space allowed by the foot stop airbag 405 (as shown in Figure 7 The foot stop airbag 405 slows down the forward movement of the passenger 8 along the zero-gravity seat back 1 under the action of inertia by applying a leg stop pressure to the passenger 8; at the same time, the stop crushing device 402 inside the crushing force limiting spring absorbs the collision energy according to the degree of mutual impact between the human body and the armrest, so as to achieve the purpose of protecting the passenger.

[0050] The low speed can be less than 50.

[0051] When the passenger is in Figure 2 When a high-speed collision occurs in the lying posture shown, the passenger posture reset time (as shown in Figure 2 The lying posture reset seat back is electrically driven to reset to the normal passenger sitting posture as shown in Figure 1 The posture is reset to the normal sitting posture, and the passenger 8 is effectively protected by the traditional passenger face airbag and the three-point safety belt 7, so as to realize the optimal passenger protection effect of the zero-gravity seat under normal sitting posture and lying posture in high-speed, medium-speed and low-speed collisions; during the reset process of the passenger 8, the foot support mechanism 4 and the zero-gravity seat back 1 are steplessly linked and reset to the normal sitting posture of the foot support mechanism 4 shown in Figure 1 The foot support mechanism 4 ensures that the passenger 8 has the best escape space after the collision.

[0052] The high speed can be equal to or higher than 50.

[0053] The movement space allowed by the foot stop airbag 405 is always kept at a gap with the maximum expansion space of the foot stop airbag 405 when the passenger 8 is in the lying posture.

[0054] In summary, the present application aims at the safety protection problem of the passenger in the lying posture of the zero-gravity seat, which can prevent the passenger's body from sliding forward along the seat back after a frontal collision of the vehicle, avoid the phenomenon of the passenger's neck being squeezed by the safety belt and the lower limbs invading the main instrument space caused by buckling the three-point safety belt, and finally realize the optimal passenger protection effect of the zero-gravity seat in the lying posture.

[0055] While embodiments of the application have been disclosed in connection with the above specification, it will be evident to those skilled in the art that many modifications can be made thereto within the scope of the application. Accordingly, it is intended that all such modifications come within the scope of the claims and their equivalents.

Claims

1. A frontal collision occupant protection device for a lying-flat operating condition, characterized in that, The zero-gravity seat backrest (1), the connecting pivot mechanism (2), the auxiliary linkage connecting rod device (3), the foot support mechanism (4), the main linkage connecting rod device (5) and the cushion framework (6) are connected through the connecting pivot mechanism (2) and the cushion framework (6). The foot support mechanism (4) is pivotally connected with one end of the auxiliary linkage connecting rod device (3) and the cushion framework (6) through the main linkage connecting rod device (5). The zero-gravity seat backrest (1) is connected with the other end of the auxiliary linkage connecting rod device (3) through the connecting pivot mechanism (2) and the cushion framework (6). The main linkage connecting rod device (5) defines the main linkage connecting rod device (5) axis through the pivot point fixed on the cushion framework (6), and connects the foot support mechanism (4) and the zero-gravity seat backrest (1) through the connecting lever linkage. The auxiliary linkage connecting rod device (3) is adjusted in shape to make the zero-gravity seat backrest (1), the cushion framework (6) and the foot support mechanism (4) in the same horizontal plane when the zero-gravity seat is in a lying state. The foot support mechanism (4) comprises a foot support seat, a stop limiting piece (401), a stop crushing device (402), a foot support leg pedal (403), a safety airbag box (404) and a foot stop safety airbag (405); the stop limiting piece (401) is fixedly connected with the foot support seat; the foot stop safety airbag (405) is connected with the foot support leg pedal (403) through the safety airbag box (404); the two ends of the stop crushing device (402) are fixedly connected with the stop limiting piece (401) and the foot support leg pedal (403). The stop crushing device (402) comprises a stop crushing front sliding cylinder (4022) and a stop crushing rear sliding cylinder (4023); one end of the stop crushing front sliding cylinder (4022) is connected with the stop limiting piece (401) through a fixing bolt (4021); one end of the stop crushing rear sliding cylinder (4023) is connected with the foot support leg pedal (403) through a fixing bolt (4021). The stop crushing device (402) is provided with a crushing force limiting spring for absorbing collision energy.

2. A vehicle characterized by The zero-gravity seat backrest (1), the connecting pivot mechanism (2), the auxiliary linkage connecting rod device (3), the foot support mechanism (4), the main linkage connecting rod device (5) and the cushion framework (6) are connected through the connecting pivot mechanism (2) and the cushion framework (6).

3. A method for protecting an occupant in a lying position from a frontal collision, by the apparatus for protecting an occupant in a lying position from a frontal collision according to claim 1, characterized by, When the passenger is in a normal sitting position and a collision occurs, the foot stop safety airbag (405) is in a dormant state because the overall angle of the seat does not reach the activation angle of the foot stop safety airbag (405), and the passenger (8) is effectively protected by the traditional passenger face airbag and the three-point safety belt (7) fixed on the zero-gravity seat backrest (1). ​ When the occupant is in a lying position and a low-speed collision occurs, the foot support mechanism (4) is adjusted to the optimal position of the occupant (8) by the auxiliary linkage linkage device (3) and the main linkage linkage device (5) with the zero-gravity seat backrest (1) stepless, the overall angle of the seat reaches the activation angle of the foot stop airbag (405), the foot stop airbag (405) is activated, and the foot stop airbag (405) is rapidly ignited within the movement space allowed by the foot stop airbag (405). The foot stop airbag (405) slows down the forward movement of the occupant (8) along the zero-gravity seat backrest (1) under the action of inertia by applying a leg stop pressure to the occupant (8); at the same time, the crush force limiting spring in the stop crush device (402) collapses according to the degree of mutual impact between the human body and the armrest, absorbs the collision energy, and achieves the purpose of protecting the occupant; When the occupant is in a lying position and a high-speed collision occurs, the occupant (8) is protected by the stop crush device (402) while the occupant (8) has a posture resetting time, and the posture is reset to a normal sitting position. The occupant (8) is effectively protected by the traditional occupant face airbag and three-point safety belt (7), and finally realizes the optimal occupant protection effect of the zero-gravity seat in normal sitting and lying postures under high-speed, medium-speed and low-speed collisions; wherein, during the resetting process of the occupant (8), the foot support mechanism (4) and the zero-gravity seat backrest (1) are steplessly reset to the normal sitting position of the foot support mechanism (4) through the auxiliary linkage linkage device (3) and the main linkage linkage device (5), so that the occupant (8) has the best escape space after the collision ends; The activation angle of the foot stop airbag (405) is greater than or equal to 60° between the zero-gravity seat backrest (1) and the seat cushion framework (6); The movement space allowed by the foot stop airbag (405) is a gap between the occupant's feet and the maximum expansion space of the foot stop airbag (405) when the occupant (8) is in a lying position.

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