Safety protection structure for zero-gravity seat passenger

Abstract

The utility model discloses a zero-gravity seat passenger safety protection structure which comprises a seat frame framework, the seat frame framework is arranged on a fixing assembly through a connecting rod assembly, a driving assembly used for driving the connecting rod assembly to work is arranged between the fixing assembly and the connecting rod assembly, and the driving assembly is of a linear moving structure. The fixing assembly is provided with a protection assembly which is used for rapidly returning after the seat frame framework is collided forwards when the seat frame framework is in the zero-gravity posture, and the protection assembly is located at the rear end of the seat frame framework. A protection assembly is arranged at the rear end of the seat frame framework, so that the seat frame framework can quickly return after being collided forwards when being in a zero-gravity posture, the restraining capacity on a passenger is improved, and impact on the passenger is absorbed, namely, the seat frame framework synchronously absorbs energy in the return process, so that injury to the passenger is relieved; the whole protection assembly is arranged on any one of the left side and the right side of the rear end of the seat frame skeleton, the structure is simplified, the position below the front end of the cushion is not occupied, and arrangement of parts at the front end of the cushion is not affected.

Description

Technical Field

[0001] This utility model belongs to the field of automotive seat technology, specifically relating to a safety protection structure for zero-gravity seat occupants. Background Technology

[0002] To improve seat comfort, most car seats are equipped with zero-gravity adjustment mechanisms, enabling the seats to be adjusted to zero gravity. However, since occupants are less constrained in a zero-gravity posture, they are more likely to be injured in a frontal collision.

[0003] Chinese patent CN117565761A discloses a seat cushion quick return mechanism based on a zero-gravity seat. This mechanism is mounted on the front angle adjustment mechanism for rapid seat cushion frame return. This mechanism allows the seat cushion to quickly return to its original position upon impact in a zero-gravity position, improving occupant restraint and reducing collision injuries. However, to ensure rapid overall seat cushion return, the entire device requires two sets of quick return mechanisms located on the left and right sides under the seat cushion, resulting in a complex structure. Furthermore, its location at the front of the seat cushion frame hinders the placement of front-end components (such as leg rests). Utility Model Content

[0004] This utility model proposes a safety protection structure for occupants of a zero-gravity seat. The structure is simple, does not occupy the space under the front of the seat cushion, and does not affect the arrangement of the front components of the seat cushion.

[0005] Therefore, the technical solution adopted by this utility model is as follows: a safety protection structure for occupants of a zero-gravity seat, including a seat frame skeleton. The lower end of the seat frame skeleton is mounted on a fixed component via a linkage assembly. The linkage assembly enables the seat frame skeleton to be in a zero-gravity posture. A driving component for driving the linkage assembly is provided between the fixed component and the linkage assembly. The driving component adopts a linear movement structure. A protective component is provided on the fixed component for the seat frame skeleton to quickly return to its original position after being hit from the front when it is in a zero-gravity posture. The protective component is located at the rear end of the seat frame skeleton.

[0006] As a preferred embodiment of the above scheme, the protection component includes a locking pin assembly and a locking rotation assembly disposed on the fixed assembly. One end of the driving assembly is hinged to the locking rotation assembly. The locking rotation assembly is provided with a locking pin through hole for the locking pin inside the locking pin assembly to pass through. The fixed assembly is provided with a locking pin insertion hole for the locking pin inside the locking pin assembly to be inserted.

[0007] Further preferably, the locking rotation assembly includes a rotating component and an energy-absorbing component, the locking pin through hole is disposed on the rotating component, the driving component is hinged to the rotating component, the rotating component is disposed on the fixed component through the energy-absorbing component, and the hinge shaft between the driving component and the rotating component and the locking pin through hole are respectively located on both sides of the energy-absorbing component.

[0008] More preferably, the energy-absorbing component includes a fixed end for connection with a fixed component and a rotating end for connection with a rotating component.

[0009] Further preferably, the locking pin assembly includes a locking pin housing disposed on the fixing component, a sealing cavity is provided inside the locking pin housing, a piston is slidably disposed inside the sealing cavity, one end of the locking pin extends into the sealing cavity and is connected to the piston, and a reaction chamber is provided inside the locking pin housing and communicates with the side of the sealing cavity near the fixing component, and the reaction chamber is filled with a reactant that can react after impact and increase the pressure inside the reaction chamber.

[0010] Further preferably, the linkage assembly includes two sets arranged at left and right intervals, each set including a front linkage, a lower linkage and a rear linkage. The upper end of the front linkage is hinged to the front end of the seat frame, the lower end of the front linkage is hinged to the lower linkage, the other end of the lower linkage is hinged to the fixed assembly, one end of the drive assembly is hinged to any of the lower linkages, and the hinge points between the drive assembly and the lower linkage, between the lower linkage and the front linkage, and between the lower linkage and the fixed assembly are all non-coincident. The rear end of the seat frame is hinged to the fixed assembly.

[0011] In a further preferred embodiment, a front horizontal tube is provided between the two lower connecting rods to ensure synchronous movement of the connecting rod assembly located at the front end of the seat frame skeleton.

[0012] The beneficial effects of this utility model are as follows: A protective component is provided at the rear end of the seat frame, which enables the seat frame to quickly return to its original position after being impacted when it is in a zero-gravity state. This improves the restraint on the occupant and absorbs the impact on the occupant. In other words, the seat frame absorbs energy synchronously during the return process, thereby reducing the injury to the occupant. The entire protective component is set on either the left or right side of the rear end of the seat frame. Only one side of the protective component is needed to meet the requirement of rapid return of the seat frame after being impacted. This not only simplifies the structure, but also, since it is located at the rear end of the seat frame, it does not occupy the space under the front end of the seat cushion and does not affect the arrangement of the front end components of the seat cushion. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the present invention.

[0014] Figure 2 This is an exploded view of the present invention.

[0015] Figure 3 This is a simplified structural diagram of the present invention.

[0016] Figure 4 This is a schematic diagram of the present invention in a zero-gravity position.

[0017] Figure 5 This is a simplified structural diagram of the present invention when it is in a zero-gravity position.

[0018] Figure 6 This is a simplified structural diagram of the present invention after the locking pin retracts when it is in a zero-gravity position and is subjected to a forward impact.

[0019] Figure 7 This is a simplified structural diagram of the present invention after it is in a zero-gravity position and subjected to the protective component upon a forward collision.

[0020] Figure 8 This is a schematic diagram of the protective component in this utility model. Figure 1 (Not touched by the previous one).

[0021] Figure 9 This is a schematic diagram of the protective component in this utility model. Figure 2 (Front bumps into back).

[0022] Figure 10 This is a schematic diagram of the energy-absorbing component in this utility model.

[0023] Reference numerals: Locking pin through hole-a, Locking pin insertion hole-b, Seat frame skeleton-100, Connecting rod assembly-400, Front connecting rod-410, Lower connecting rod-420, Front cross tube-440, Fixing assembly-500, Drive assembly-600, Protection assembly-700, Locking pin assembly-710, Locking pin-711, Locking pin housing-712, Locking rotation assembly-720, Rotating component-721, Energy absorbing component-722, Fixed end-722a, Rotating end-722b. Detailed Implementation

[0024] The present invention will be further described below with reference to embodiments and accompanying drawings:

[0025] like Figures 1-10 As shown, a safety protection structure for a zero-gravity seat occupant mainly consists of a seat frame 100, a linkage assembly 400, a fixing assembly 500, a drive assembly 600, and a protection assembly 700. The linkage assembly 400 is mounted on the fixing assembly 500 at the lower end of the seat frame 100 via the fixing assembly 500, and the linkage assembly 400 enables the seat frame 100 to be in a zero-gravity posture. A drive assembly 600 is disposed between the fixing assembly 500 and the linkage assembly 400 to drive the linkage assembly 400. The drive assembly 600 adopts a linear motion structure, such as a motor lead screw assembly. The fixing assembly can be mounted on a slide rail assembly or a rotating assembly, as needed, allowing the seat to also have functions such as forward and backward movement or rotation.

[0026] A protective component 700 is provided on the fixed component 500 for the seat frame 100 to quickly return to its original position after being impacted when in a zero-gravity posture, and the protective component 700 is located at the rear end of the seat frame 100. The specific structure of the protective component 700 includes a locking pin component 710 and a locking rotation component 720 provided on the fixed component 500, and one end of the drive component 600 is hinged to the locking rotation component 720. The locking rotation component 720 is provided with a locking pin through hole a for the locking pin 711 inside the locking pin component 710 to pass through, and the fixed component 500 is provided with a locking pin insertion hole b for the locking pin 711 inside the locking pin component 710 to be inserted.

[0027] When the seat is not subjected to a forward impact, the locking pin in the locking pin assembly passes through the locking pin through hole and inserts into the locking pin insertion hole, preventing the locking rotation assembly from rotating. This means the locking rotation assembly is fixed to the fixed assembly via a linkage, thus enabling zero-gravity adjustment of the linkage assembly and drive assembly. This is the state of the seat frame at this time. Figure 3 and Figure 5 As shown, where Figure 3 This is a simplified structural diagram without zero-gravity adjustment. Figure 5 This is a simplified structural diagram under zero gravity conditions. When the seat frame is subjected to a forward impact in zero gravity, the locking pin retracts under the action of the locking pin assembly, releasing the restriction on the locking rotation assembly. The state of the seat frame at this time is as follows. Figure 6 As shown in the simplified structural diagram, since the drive components are not working, the front end of the entire seat frame will return to its original position under the weight of the occupants. At this time, the state of the seat frame is as follows: Figure 7 As shown in the simplified structural diagram, this design enhances the restraint on occupants and reduces the risk of injury.

[0028] Specifically, the locking rotation assembly 720 includes a rotating member 721 and an energy-absorbing member 722, with a locking pin through hole a disposed on the rotating member 721. The drive assembly 600 is hinged to the rotating member 721, and the rotating member 721 is mounted on the fixed assembly 500 via the energy-absorbing member 722. The hinge shaft between the drive assembly 600 and the rotating member 721 and the locking pin through hole a are located on both sides of the energy-absorbing member 722. When the front end of the seat frame returns to its downward position, it will cause the rotating member to rotate counterclockwise around the energy-absorbing member, which can absorb the impact force on the occupants.

[0029] Preferably, the energy-absorbing component is a friction disc. The energy-absorbing component 722 includes a fixed end 722a for connecting with the fixed assembly 500 and a rotating end 722b for connecting with the rotating component 721. The fixed end is fixed on the fixed assembly, and the rotating component is fixed on the rotating end. The rotation of the rotating end drives the internal friction disc to rotate, thereby achieving frictional energy absorption.

[0030] To achieve the retraction of the locking pin after a frontal collision, the locking pin assembly 710 includes a locking pin housing 712 mounted on a fixed assembly. Preferably, the locking pin housing 712 is fixed to the fixed assembly by bolts or other means. A sealing cavity is provided within the locking pin housing 712. A piston is slidably disposed within the sealing cavity, and one end of the locking pin 711 extends into the sealing cavity and connects to the piston. Simultaneously, a reaction chamber is provided within the locking pin housing 712, communicating with the side of the sealing cavity closest to the fixed assembly. The reaction chamber is filled with a reactant that can react and increase the pressure within the reaction chamber after a frontal collision; this reactant can be the substance used in airbags. When the car is involved in a frontal collision, the seat is also impacted, causing the reactant in the reaction chamber to react, resulting in increased pressure in the reaction chamber and the sealing cavity communicating with it. This increased pressure acts on the side of the piston that connects to the locking pin, thus pushing the locking pin back.

[0031] The specific structure of the linkage assembly 400 includes two sets arranged at left and right intervals. Each set includes a front linkage 410 and a lower linkage 420. The upper end of the front linkage 410 is hinged to the front end of the seat frame 100, and the lower end of the front linkage 410 is hinged to the lower linkage. The other end of the lower linkage 420 is hinged to the fixed assembly 500. One end of the drive assembly 600 is hinged to any of the lower linkages 420. The hinge points between the drive assembly 600 and the lower linkage 420, between the lower linkage 420 and the front linkage 410, and between the lower linkage 420 and the fixed assembly 500 are not coincident. The rear end of the seat frame 100 is hinged to the fixed assembly 500.

[0032] Meanwhile, a front horizontal tube 440 is provided between the two lower connecting rods 420 to ensure synchronous movement of the connecting rod assembly at the front end of the seat frame. At this time, the lower connecting rods are fixed to the front horizontal tube. To reduce the number of parts, the front horizontal tube can be rotatably set at the lower end of the front connecting rod, or the front horizontal tube can be rotatably set on the fixed assembly.

[0033] In this embodiment, the fixing component is mounted on the slide rail assembly. Specifically, the fixing component includes two front fixing members and two rear fixing members arranged opposite each other on the left and right sides. The protection component is mounted on the rear fixing member on the same side as the drive assembly, and the lower connecting rod is hinged to the front fixing component. Of course, the front and rear fixing members on each side can also be configured as a single component extending forward and backward.

Claims

1. A safety protection structure for a zero-gravity seat occupant, comprising a seat frame (100), the lower end of which is mounted on a fixed assembly (500) via a linkage assembly (400), the linkage assembly (400) enabling the seat frame (100) to be in a zero-gravity posture, a drive assembly (600) for driving the linkage assembly (400) is provided between the fixed assembly (500) and the linkage assembly (400), the drive assembly (600) employing a linear motion structure, characterized in that: The fixing component (500) is provided with a protective component (700) for the seat frame (100) to quickly return to its original position after being hit from the front when it is in a zero-gravity posture, and the protective component (700) is located at the rear end of the seat frame (100).

2. The safety protection structure for zero-gravity seat occupants according to claim 1, characterized in that: The protective component (700) includes a locking pin assembly (710) disposed on the fixed component (500) and a locking rotation assembly (720) disposed on the fixed component (500). One end of the driving component (600) is hinged to the locking rotation assembly (720). The locking rotation assembly (720) is provided with a locking pin through hole (a) through which the locking pin (711) inside the locking pin assembly (710) passes. The fixed component (500) is provided with a locking pin insertion hole (b) for the locking pin (711) inside the locking pin assembly (710) to be inserted.

3. The safety protection structure for zero-gravity seat occupants according to claim 2, characterized in that: The locking rotation assembly (720) includes a rotating component (721) and an energy-absorbing component (722). The locking pin through hole (a) is disposed on the rotating component (721). The driving assembly (600) is hinged to the rotating component (721). The rotating component (721) is disposed on the fixed assembly (500) through the energy-absorbing component (722), and the rotating component (721) can rotate relative to the energy-absorbing component (722). The hinge shaft between the driving assembly (600) and the rotating component (721) and the locking pin through hole (a) are respectively located on both sides of the energy-absorbing component (722).

4. The safety protection structure for zero-gravity seat occupants according to claim 3, characterized in that: The energy-absorbing member (722) includes a fixed end (722a) for connection with the fixed assembly (500) and a rotating end (722b) for connection with the rotating member (721).

5. The safety protection structure for zero-gravity seat occupants according to claim 2, characterized in that: The locking pin assembly (710) includes a locking pin housing (712) disposed on the fixed assembly. A sealing cavity is provided inside the locking pin housing (712). A piston is slidably disposed inside the sealing cavity. One end of the locking pin (711) extends into the sealing cavity and is connected to the piston. A reaction chamber is provided inside the locking pin housing (712) and communicates with the side of the sealing cavity near the fixed assembly. The reaction chamber is filled with reactants that can react after a forward collision, increasing the pressure inside the reaction chamber.

6. The safety protection structure for zero-gravity seat occupants according to claim 1 or 2, characterized in that: The linkage assembly (400) includes two sets arranged at left and right intervals. Each set includes a front linkage (410) and a lower linkage (420). The upper end of the front linkage (410) is hinged to the front end of the seat frame (100), and the lower end of the front linkage (410) is hinged to the lower linkage. The other end of the lower linkage (420) is hinged to the fixed assembly (500). One end of the drive assembly (600) is hinged to either lower linkage (420). The hinge points between the drive assembly (600) and the lower linkage (420), the lower linkage (420) and the front linkage (410), and the lower linkage (420) and the fixed assembly (500) are not coincident. The rear end of the seat frame (100) is hinged to the fixed assembly (500).

7. The safety protection structure for zero-gravity seat occupants according to claim 6, characterized in that: A front cross tube (440) is provided between the two lower links (420) to ensure synchronous movement of the link assembly located at the front end of the seat frame.

Images