Zero Gravity Seat Passive Safety System

Abstract

This invention discloses a zero-gravity seat passive safety system. The seat body has a base and a seat frame located on the upper side of the base. The rear end of the seat frame is rotatably connected to the base, and a lifting drive mechanism is provided between the front end of the seat frame and the base. A backrest is rotatably connected to the rear end of the base. A backrest retractor and a lumbar retractor are respectively disposed at both ends of the seat belt. The backrest retractor is installed at the shoulder position of the backrest, and the lumbar retractor is installed on one side of the seat frame. A seat belt insertion seat is provided on the side of the seat frame away from the lumbar retractor. A connector is fixedly connected to the middle of the seat belt, and this connector can be detachably inserted into the seat belt insertion seat. The lumbar retractor has a built-in emergency locking mechanism for locking the seat belt in an emergency. The beneficial effect of this invention is that it improves the riding safety in zero-gravity riding mode.

Description

Technical Field

[0001] This invention relates to the field of automotive seat technology, and more specifically to a zero-gravity seat passive safety system. Background Technology

[0002] Zero-gravity seats are a popular comfort feature in the automotive market. Their core structure includes a base and a seat frame that is rotatably mounted on the base at the rear. The front of the seat frame is equipped with a leg rest, and the rear is rotatably connected to a backrest.

[0003] The zero-gravity mode of the zero-gravity chair involves lifting the front of the seat frame upwards, causing the entire seat frame to tilt, the backrest to recline, and the leg rest to extend at the front of the seat frame. In zero-gravity mode, users can lie comfortably in the chair.

[0004] In zero-gravity seating mode, occupants are almost in a reclining position supported on the seat. If a collision occurs during vehicle movement, the restraining force of the seat belts on the occupants is greatly reduced, especially the lap belts. Due to the inertia of the body, the occupants will slide forward from the seat, posing a very serious safety hazard. Summary of the Invention

[0005] In view of this, the present invention provides a zero-gravity seat passive safety system, which aims to improve safety in zero-gravity riding mode.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows:

[0007] A zero-gravity seat passive safety system includes a seat body with a base and a seat frame located on the upper side of the base. The rear end of the seat frame is rotatably connected to the base, and a lifting drive mechanism is provided between the front end of the seat frame and the base. A backrest is rotatably connected to the rear end of the base. The key feature is that it also includes a seat belt. The seat belt has a backrest retractor and a lumbar retractor at each end. The backrest retractor is installed at the shoulder position of the backrest, and the lumbar retractor is installed on one side of the seat frame. A seat belt connector is provided on the side of the seat frame away from the lumbar retractor. A connector is fixedly connected to the middle of the seat belt, and this connector can be detachably inserted into the seat belt connector. The lumbar retractor has a built-in emergency locking mechanism for locking the seat belt in an emergency.

[0008] Preferably, the backrest retractor has a built-in emergency locking mechanism for securing the seatbelt in an emergency.

[0009] Preferably, the backrest retractor and / or waist retractor have a built-in pretensioning pull mechanism, which can actively tighten the seat belt in an emergency.

[0010] Preferably, the seat frame integrates a seat cushion airbag, which can rapidly inflate upon a vehicle collision. The seat cushion airbag is positioned within the seat frame in the area corresponding to the occupant's buttocks.

[0011] Preferably, a guide outlet component is installed at the shoulder position of the backrest, and the seat belt is slidably mounted on the guide outlet component. The guide outlet component is installed at the shoulder position of the backrest via a horizontal adjustment mechanism and / or a height adjustment mechanism. The backrest retractor, the guide outlet component, and the lumbar retractor are arranged on the same side of the seat.

[0012] Preferably, the front end of the seat frame is provided with a leg rest.

[0013] Preferably, the lifting drive mechanism integrates a collapsible structure, which can passively collapse at the moment of vehicle collision, so that the seat frame returns from the tilted state to the horizontal state.

[0014] Preferably, the lifting drive mechanism includes an electric angle adjuster and an upper connecting rod and a lower connecting rod hinged to each other at their ends. The upper connecting rod is rotatably connected to the front of the seat frame, and the lower connecting rod is rotatably connected to the base. The electric angle adjuster is used to drive the lower connecting rod to rotate relative to the base. The collapsible structure is provided at the hinge position of the upper connecting rod and the lower connecting rod.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The zero-gravity seat passive safety system provided by this invention allows for flexible seatbelt retraction and retraction at both ends during daily use, as the backrest retractor and lumbar retractor can be freely retracted. Therefore, even when the buckle is fixed to the seatbelt, the seatbelt can still be worn freely by different users. The lumbar retractor has a built-in emergency locking mechanism. When an occupant is lying on the seat in zero-gravity mode, in the event of a collision or sudden braking, the emergency locking mechanism quickly secures the seatbelt, ensuring a constant length between the buckle and the lumbar retractor. This ensures the seatbelt is firmly restrained around the occupant's waist, preventing the occupant from sliding forward from the seat and improving safety in zero-gravity seating mode.

[0017] 2. The backrest retractor and lumbar retractor have a pre-tensioning function. In the event of a vehicle collision, the pre-tensioning pull-back mechanism can firmly bind the occupants to the seat, improving collision safety.

[0018] 3. Through the close cooperation of safety components such as seat belt emergency locking, pretensioning and pullback, mechanical crumple zone, and seat airbags, comprehensive protection can be provided to occupants from multiple directions, including front, rear, horizontal, and vertical, at different stages after a collision. Attached Figure Description

[0019] Figure 1This is a structural diagram of a zero-gravity seat.

[0020] Figure 2 This is a side view of the zero-gravity seat.

[0021] Figure 3 This is a reference diagram showing the usage state of the present invention. Detailed Implementation

[0022] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0023] like Figure 1 and 2 As shown, a zero-gravity seat comprises: a base 1 and a seat frame 2 located on the upper side of the base 1. The rear end of the seat frame 2 is rotatably connected to the base 1, and a lifting drive mechanism 3 is provided between the front end and the base 1. A backrest 4 is rotatably connected to the rear end of the base 1. A leg rest 12 is provided at the front end of the seat frame 2. The leg rest 12 can be selected or omitted depending on different configurations. This embodiment is described using the configuration of the leg rest 12 as an example.

[0024] See also Figure 2 As shown, the lifting drive mechanism 3 includes an electric angle adjuster 3a and an upper connecting rod 3b and a lower connecting rod 3c hinged to each other at their ends. The upper end of the upper connecting rod 3b is rotatably connected to the front of the seat frame 2, and the lower end of the lower connecting rod 3c is rotatably connected to the base 1 via the electric angle adjuster 3a. The electric angle adjuster 3a is used to drive the lower connecting rod 3c to rotate relative to the base 1. The zero-gravity sitting state of the seat is as follows: 1. The backrest 4 is tilted backward; 2. The electric angle adjuster 3a drives the lower connecting rod 3c to rotate. Under the transmission action of the upper connecting rod 3b, the seat frame 2 rotates with the rear end as the rotation center, and the front end is raised, so the seat frame 2 is adjusted to a tilted state; 3. The leg rest 12 is tilted and unfolded at the front end of the seat frame 2.

[0025] In this embodiment, the zero-gravity seat is equipped with a safety restraint system, including a seat belt 5. A backrest retractor 6 and a lumbar retractor 7 are respectively installed at both ends of the seat belt 5. The backrest retractor 6 is installed at the shoulder position of the backrest 4, and the lumbar retractor 7 is installed on one side of the seat frame 2. A seat belt connector 9 is provided on the side of the seat frame 2 away from the lumbar retractor 7. A connector 8 is fixedly connected to the middle of the seat belt 5, and this connector 8 can be detachably inserted into the seat belt connector 9. Under normal conditions, because the backrest retractor 6 and lumbar retractor 7 at both ends can freely retract and extend the seat belt 5, the seat belt 5 can still be worn freely even if the connector 8 is fixed to the seat belt.

[0026] The lumbar retractor 7 has a built-in emergency locking mechanism. When the occupant is lying on the seat in zero-gravity mode, in the event of a collision or sudden braking, the emergency locking mechanism quickly secures the seat belt 5, ensuring that the length of the seat belt between the connector 8 and the lumbar retractor 7 remains constant. This ensures that the seat belt can firmly restrain the occupant's waist, preventing the occupant from sliding forward from the seat and improving safety in zero-gravity seating mode. Furthermore, the backrest retractor 6 also has a built-in emergency locking mechanism. In the event of a collision or sudden braking, the emergency locking mechanism of the backrest retractor 6 can firmly fix the occupant's upper body to the front of the backrest.

[0027] The backrest retractor 6 and lumbar retractor 7 also feature a pretensioning function, meaning they have an internal pretensioning pull-back mechanism. In the event of a vehicle collision, as the vehicle decelerates rapidly, the collision signal is transmitted through the collision sensor, igniting the gas generator within milliseconds and pushing the pretensioning pull-back mechanism to pull back the seatbelt, firmly securing the occupant to the seat. The pretensioning functions of both the backrest retractor 6 and lumbar retractor 7 can be configured simultaneously, or one can be selected based on individual needs.

[0028] In the field of seat belt technology, the pre-tensioning and pull-back mechanisms and emergency locking mechanisms of the retractor mentioned above are all mature technologies, and will not be described in detail in this embodiment.

[0029] like Figure 3 As shown, the seat frame 2 integrates a seat cushion airbag 10, which is preferably located in the area of ​​the seat frame 2 corresponding to the occupant's buttocks. At the moment of collision, the vehicle decelerates rapidly, and the vehicle collision signal is transmitted to the gas generator of the seat cushion airbag 10. The seat cushion airbag quickly inflates and expands. The inflated seat cushion airbag provides support in the horizontal direction, which can further prevent the occupant from slipping off the seat. Together with the seat belt and other restraint systems, it maintains the occupant's correct posture and avoids injury to the spine and other parts of the body due to body position shift.

[0030] A collapsible structure is integrated into the lifting drive mechanism 3. This collapsible structure is located at the hinge position of the upper link 3b and the lower link 3c. In the later stages of the collision, as the impact continues and the occupant's body moves forward and downward due to inertia, pressure is exerted on the seat frame 2. At this point, the downward pressure causes the collapsible structure to collapse, disrupting the hinge relationship between the upper link 3b and the lower link 3c. This energy absorption allows the seat frame 2 to fall from its tilted position back to a horizontal state, buffering the impact force on the occupant's body, particularly reducing spinal injury. The integrated collapsible structure in the lifting drive mechanism 3 provided in this embodiment is prior art; please refer to the patent publication document with publication number CN221137781U.

[0031] For example Figure 1As shown, a guide outlet component 11 is installed at the shoulder position of the backrest 4. The seat belt 5 is slidably mounted on the guide outlet component 11. The guide outlet component 11 is installed at the shoulder position of the backrest 4 via a horizontal adjustment mechanism and / or a height adjustment mechanism. The horizontal adjustment mechanism and the height adjustment mechanism can adjust the position of the guide outlet component 11. Through this adjustment, the user can ensure a suitable positional relationship between the seat belt in front of their chest and the occupant, thereby preventing the seat belt from strangling them during a collision.

[0032] Based on the zero-gravity seat safety system provided in this embodiment, after a vehicle collision, the components work together in the following time sequence to protect the occupants:

[0033] 1. Very Early Stage - Backrest Retractor 6 and Lumbar Belt Retractor 7 activate. At the moment of impact, the vehicle decelerates rapidly. The vehicle collision signal is transmitted to the backrest and lumbar belt retractors, which then deploy and tighten the seat belts, firmly securing the occupants and preventing them from being thrown forward or lurched due to inertia. 2. Early Stage - Seat Cushion Airbag 10 triggers. At the moment of impact, the vehicle decelerates rapidly. The vehicle collision signal is transmitted to the gas generator of the seat cushion airbag 10, which rapidly inflates. The inflated seat cushion airbag provides horizontal support, preventing the occupants from slipping off the seat. Together with the seat belt and other restraint systems, it maintains the occupants' correct posture, preventing injuries to the spine and other parts of the body due to body position shift. 3. Mid-to-Late Stage - The crumple zone in the lift drive mechanism 3 comes into play. As the collision continues, the occupants' bodies move forward and downward due to inertia, putting pressure on the seat cushion. At this time, the crumple zone begins to function. Through the structural failure of the deformable material in the linkage structure, controlled energy absorption is achieved, thereby cushioning the impact force on the occupants' bodies, especially reducing spinal injuries. Through the close cooperation of these safety components, comprehensive protection is provided to occupants from multiple directions, including front, rear, horizontal, and vertical, at different stages after a collision.

[0034] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention. Those skilled in the art, under the guidance of the present invention, can make various similar representations without departing from the spirit and claims of the present invention, and such modifications all fall within the protection scope of the present invention.

Claims

1. A zero-gravity seat passive safety system, comprising a seat body, the seat body having a base (1) and a seat frame (2) located on the upper side of the base (1), the rear end of the seat frame (2) being rotatably connected to the base (1), and a lifting drive mechanism (3) being provided between the front end and the base (1), and a backrest (4) being rotatably connected to the rear end of the base (1), characterized in that: It also includes a seat belt (5), with a backrest retractor (6) and a waist retractor (7) respectively at both ends of the seat belt (5). The backrest retractor (6) is installed at the shoulder position of the backrest (4), and the waist retractor (7) is installed on one side of the seat frame (2). A seat belt connector (9) is provided on the side of the seat frame (2) away from the waist retractor (7). A connector (8) is fixedly connected to the middle of the seat belt (5), and the connector (8) can be detachably inserted into the seat belt connector (9). The waist retractor (7) has an emergency locking mechanism built in, which is used to lock the seat belt (5) in an emergency to ensure that the length of the seat belt between the plug (8) and the waist retractor (7) is a constant value. The seat frame (2) integrates a seat cushion airbag (10). In the event of a vehicle collision, the seat cushion airbag (10) can be rapidly inflated. The seat cushion airbag (10) is located in the area of ​​the seat frame (2) corresponding to the occupant's buttocks.

2. The zero-gravity seat passive safety system according to claim 1, characterized in that: The backrest retractor (6) has a built-in emergency locking mechanism for securing the seat belt (5) in an emergency.

3. The zero-gravity seat passive safety system according to claim 1 or 2, characterized in that: The backrest retractor (6) and / or waist retractor (7) are equipped with a pre-tensioning pull-back mechanism that can actively tighten the seat belt (5) in an emergency.

4. The zero-gravity seat passive safety system according to claim 1, characterized in that: The backrest (4) is equipped with a guide outlet component (11) at the shoulder position, and the seat belt (5) is slidably mounted on the guide outlet component (11). The guide outlet component (11) is installed at the shoulder position of the backrest (4) through a horizontal adjustment mechanism and / or a height adjustment mechanism.

5. The zero-gravity seat passive safety system according to claim 4, characterized in that: The backrest retractor (6), guide outlet component (11), and lumbar retractor (7) are arranged on the same side of the seat.

6. The zero-gravity seat passive safety system according to claim 1, characterized in that: The front end of the seat frame (2) is provided with a leg rest (12).

7. The zero-gravity seat passive safety system according to claim 1, characterized in that: The lifting drive mechanism (3) integrates a collapse structure. In the instant of vehicle collision, the collapse structure can passively collapse so that the seat frame (2) returns from the tilted state to the horizontal state.

8. The zero-gravity seat passive safety system according to claim 7, characterized in that: The lifting drive mechanism (3) includes an electric angle adjuster (3a) and an upper connecting rod (3b) and a lower connecting rod (3c) hinged to each other at their ends. The upper connecting rod (3b) is rotatably connected to the front of the seat frame (2), and the lower connecting rod (3c) is rotatably connected to the base (1). The electric angle adjuster (3a) is used to drive the lower connecting rod (3c) to rotate relative to the base (1). The collapsible structure is located at the hinge position of the upper link (3b) and the lower link (3c).

Images