Zero-gravity seat passive safety system

Abstract

The zero-gravity seat passive safety system is characterized in that a seat body is provided with a base and a seat frame located on the upper side of the base, the rear end of the seat frame is rotationally connected with the base, a lifting driving mechanism is arranged between the front end of the seat frame and the base, and the rear end of the base is rotationally connected with a backrest; a backrest retractor and a waist retractor are arranged at the two ends of the safety belt respectively, the backrest retractor is installed at the shoulder position of the backrest, the waist retractor is installed on one side of the seat frame, a safety belt inserting base is arranged on the side, away from the waist retractor, of the seat frame, and an inserting opening piece is fixedly connected to the middle of the safety belt. The socket piece can be detachably inserted into the safety belt bayonet socket; an emergency locking mechanism is arranged in the waist retractor and used for fixing and locking the safety belt in emergency. The method has the beneficial effect that the riding safety in a zero-gravity riding mode is improved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile seats, and in particular to a zero-gravity seat passive safety system. Background Art

[0002] The zero-gravity seat is a comfort configuration that is highly favored by users in the automotive market. Its core structure includes a base and a seat frame that is rotatably mounted on the base at the rear end. The seat frame is provided with a leg rest at the front end and is rotatably connected to a backrest at the rear end.

[0003] The zero gravity mode of the zero gravity chair is as follows: the front end of the seat frame is lifted upward, so that the seat frame is tilted as a whole, the backrest is tilted backward, and the leg rest is tilted and unfolded at the front end of the seat frame. In zero gravity mode, the user can lie on the seat in a very comfortable posture.

[0004] In zero-gravity riding mode, passengers are supported on the seats in a nearly lying position. If a collision occurs during driving, the restraint of the seat belt on the passengers will be greatly reduced, especially the seat belt at the waist position. Under the action of human inertia, the passengers 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, aiming to improve the safety in the zero-gravity riding mode.

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

[0007] A zero-gravity seat passive safety system includes a seat body, 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, a lifting drive mechanism is provided between the front end and the base, and the rear end of the base is rotatably connected to a backrest, the key point of the system is that it also includes a seat belt, a backrest retractor and a waist retractor are respectively provided at both ends of the seat belt, the backrest retractor is installed at the shoulder position of the backrest, the waist retractor is installed on one side of the seat frame, a seat belt socket is provided on the side of the seat frame away from the waist retractor, a socket is fixedly connected to the middle of the seat belt, and the socket can be detachably inserted into the seat belt socket; the waist retractor is equipped with an emergency locking mechanism for fixing and locking the seat belt in an emergency.

[0008] Preferably, the seat back retractor is equipped with an emergency locking mechanism for fixing and locking the seat belt in an emergency.

[0009] Preferably, the backrest retractor and / or the lumbar retractor is / are equipped with a pre-tightening and retracting mechanism, which can actively tighten the seat belt in an emergency.

[0010] Preferably, a seat cushion airbag is integrated in the seat frame, and the seat cushion airbag can be rapidly inflated at the moment of vehicle collision. The seat cushion airbag is arranged in the area of ​​the seat frame corresponding to the position of the occupant's buttocks.

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

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

[0013] Preferably, the lifting drive mechanism is integrated with a collapse structure, and at the moment of vehicle collision, the collapse structure can passively collapse to return the seat frame from an inclined state to a horizontal state.

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

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The zero-gravity seat passive safety system provided by the present invention can be used in daily use because the backrest retractors and waist retractors at both ends can freely retract and release the seat belt. Therefore, even if the socket is fixed on the seat belt, the seat belt can be freely worn by different users. The waist retractor is equipped with an emergency locking mechanism. When the occupant lies on the seat in zero-gravity mode, if the vehicle collides or brakes suddenly, the emergency locking mechanism quickly fixes the seat belt to ensure that the length of the seat belt between the socket and the waist retractor is constant, ensuring that the seat belt can be firmly restrained around the occupant's waist, thereby preventing the occupant from sliding forward from the seat, and improving the safety in the zero-gravity riding mode.

[0017] 2. The backrest retractor and lumbar retractor have a pre-tightening function. At the moment of vehicle collision, the pre-tightening and pulling back mechanism can firmly bind the occupants to the seats, thereby improving collision safety.

[0018] 3. Through the close cooperation of safety components such as seat belt emergency locking, pre-tensioning and retraction, mechanical collapse, and seat airbags, comprehensive protection can be provided to occupants in multiple directions, including front and rear, horizontally, and vertically, at different stages after a collision. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1This is a schematic diagram of the structure of a zero-gravity chair.

[0020] Figure 2 A side view of the zero gravity chair.

[0021] Figure 3 This is a reference diagram of the use status of the present invention. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with embodiments and drawings.

[0023] like Figure 1 and 2 As shown, a zero-gravity chair 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, a lifting drive mechanism 3 is provided between the front end and the base 1, the rear end of the base 1 is rotatably connected to a backrest 4, the front end of the seat frame 2 is provided with a leg rest 12, the leg rest 12 can be optionally configured according to different configuration options, and this embodiment is explained by taking the configuration of the leg rest 12 as an example.

[0024] Further reference Figure 2 As shown, the lifting drive mechanism 3 includes an electric recliner 3a and an upper connecting rod 3b and a lower connecting rod 3c whose ends are hinged to each other. 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 through the electric recliner 3a. The electric recliner 3a is used to drive the lower connecting rod 3c to rotate relative to the base 1. The zero-gravity riding state of the seat is: 1. The backrest 4 tilts backward; 2. The electric recliner 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 lifted, so that 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 safety belt 5, with a backrest retractor 6 and a waist retractor 7 respectively arranged at both ends of the safety belt 5, the backrest retractor 6 is installed at the shoulder position of the backrest 4, the waist retractor 7 is installed on one side of the seat frame 2, and a safety belt plug socket 9 is arranged on the side of the seat frame 2 away from the waist retractor 7, and a socket 8 is fixedly connected to the middle of the safety belt 5, and the socket 8 can be detachably plugged into the safety belt plug socket 9. Under normal conditions, because the backrest retractor 6 and the waist retractor 7 at both ends can freely retract and release the safety belt 5, even if the socket 8 is fixed on the safety belt, the safety belt 5 can be freely worn.

[0026] The waist retractor 7 is equipped with an emergency locking mechanism. When the occupant lies on the seat in zero-gravity mode, if the vehicle collides or brakes suddenly, the emergency locking mechanism quickly fixes the seat belt 5 to ensure that the length of the seat belt between the socket 8 and the waist retractor 7 is constant, ensuring that the seat belt can be firmly restrained around the occupant's waist, thereby preventing the occupant from sliding forward from the seat, thereby improving safety in zero-gravity riding mode. Furthermore, the backrest retractor 6 is also equipped with an emergency locking mechanism. If the vehicle collides or brakes suddenly, the emergency locking mechanism of the backrest retractor 6 can tightly fix the occupant's upper body to the front side of the backrest.

[0027] The backrest retractor 6 and the waist retractor 7 also have a pre-tightening function, that is, a pre-tightening retraction mechanism is provided inside them. At the moment of vehicle collision, the vehicle decelerates sharply, and the vehicle collision signal detonates the gas generator within a few milliseconds through the collision sensor, and pushes the pre-tightening retraction mechanism to retract the seat belt, firmly binding the person to the seat. The pre-tightening function of the backrest retractor 6 and the waist retractor 7 can be configured at the same time, or one of them can be configured according to needs.

[0028] In the technical field of seat belts, the above-mentioned pre-tensioning and retracting mechanism and emergency locking mechanism of the retractor are both mature technologies and will not be described in detail in this embodiment.

[0029] like Figure 3 As shown, a seat cushion airbag 10 is integrated in the seat frame 2, and is preferably arranged in the area of ​​the seat frame 2 corresponding to the position of the occupant's buttocks. At the moment of collision, the vehicle decelerates sharply, and the vehicle collision signal is transmitted to the gas generator of the seat cushion airbag 10, and the seat cushion airbag is rapidly inflated. The inflated seat cushion airbag provides support in the horizontal direction, which can further prevent the occupant from sliding off the seat, and together with restraint systems such as seat belts, maintain the correct posture of the occupant to avoid injuries to the spine and other parts of the body due to displacement of the body position.

[0030] A collapse structure is integrated in the lifting drive mechanism 3, and the collapse structure is arranged at the hinge position of the upper connecting rod 3b and the lower connecting rod 3c. In the middle and late stages of the collision, as the collision process continues, when the body of the occupant moves forward and downward due to inertia, pressure will be generated on the seat frame 2. At this time, the diving pressure causes the collapse structure to collapse, and the hinge relationship between the upper connecting rod 3b and the lower connecting rod 3c is structurally damaged, and the seat frame 2 is realized by energy absorption. The seat frame 2 falls back from an inclined state to a horizontal state, buffering the impact force on the occupant's body, especially reducing the damage to the spine. The collapse structure is integrated in the lifting drive mechanism 3 provided in this embodiment, which belongs to the prior art. Please refer to the patent announcement document with announcement number CN221137781U.

[0031] For example Figure 1As shown, a guide outlet component 11 is installed at the shoulder position of the backrest 4, and the safety 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. 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 make the safety belt in front of the chest have a suitable position relationship with the occupant, thereby preventing the safety belt from being strangled in the neck during a collision.

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

[0033] 1. Very early stage - the backrest retractor 6 and the lap belt retractor 7 are activated. At the moment of collision, the vehicle decelerates sharply. The vehicle collision signal is transmitted to the backrest lap belt retractor to detonate and tighten the seat belt, which firmly fixes the occupant to prevent the occupant from rushing forward and diving due to inertia. 2. Early stage - the seat cushion airbag 10 is triggered. At the moment of collision, the vehicle decelerates sharply. The vehicle collision signal is transmitted to the gas generator of the seat cushion airbag 10, and the seat cushion airbag is rapidly inflated. The inflated seat cushion airbag provides support in the horizontal direction to prevent the occupant from sliding off the seat, and maintains the correct posture of the occupant together with the restraint system such as the seat belt to avoid injuries to the spine and other parts due to body position deviation. 3. Mid-late stage - the collapse in the lifting drive mechanism 3 plays a role. As the collision process continues, when the occupant's body moves forward and downward due to inertia, pressure is generated on the seat cushion. At this time, the collapse area begins to play a role, and the deformable material of the connecting rod structure undergoes structural damage to achieve controllable energy absorption, thereby buffering the impact force on the occupant's body, especially reducing the damage to the spine. Through the close cooperation of these safety components, comprehensive protection is provided to the occupants from multiple directions, including front and rear, horizontally and vertically, at different stages after a collision.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Under the guidance of the present invention, ordinary technicians in this field can make various similar expressions without violating the purpose and claims of the present invention, and such changes all fall within the scope of protection 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), a lifting drive mechanism (3) being provided between the front end and the base (1), the rear end of the base (1) being rotatably connected to a backrest (4), characterized in that: It also includes a safety belt (5), wherein two ends of the safety belt (5) are respectively provided with a backrest retractor (6) and a waist retractor (7), wherein 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), and a safety belt plug-in seat (9) is provided on the side of the seat frame (2) away from the waist retractor (7), and a socket member (8) is fixedly connected to the middle of the safety belt (5), and the socket member (8) can be detachably plugged into the safety belt plug-in seat (9); The waist retractor (7) is provided with an emergency locking mechanism built in, which is used to fix and lock the safety belt (5) in an emergency.

2. The zero-gravity seat passive safety system according to claim 1, characterized in that: The backrest retractor (6) is provided with an emergency locking mechanism built in, which is used to fix and lock the safety 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 the waist retractor (7) is / are equipped with a pre-tightening and retracting mechanism, and the pre-tightening and retracting mechanism can actively tighten the safety belt (5) in an emergency.

4. The zero-gravity seat passive safety system according to claim 1, characterized in that: A seat cushion airbag (10) is integrated in the seat frame (2), and at the moment of vehicle collision, the seat cushion airbag (10) can be rapidly inflated.

5. The zero-gravity seat passive safety system according to claim 4, characterized in that: The seat cushion airbag (10) is arranged in an area of ​​the seat frame (2) corresponding to the position of the occupant's buttocks.

6. The zero-gravity seat passive safety system according to claim 1, characterized in that: A guide outlet component (11) is installed at the shoulder position of the backrest (4), the safety belt (5) is slidably mounted on the guide outlet component (11), and 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.

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

8. The zero-gravity seat passive safety system according to claim 1, characterized in that: A leg support (12) is provided at the front end of the seat frame (2).

9. The zero-gravity seat passive safety system according to claim 1, characterized in that: The lifting drive mechanism (3) is integrated with a collapse structure, and at the moment of vehicle collision, the collapse structure can collapse passively to return the seat frame (2) from an inclined state to a horizontal state.

10. The zero-gravity seat passive safety system according to claim 1, characterized in that: The lifting drive mechanism (3) comprises an electric angle adjuster (3a) and an upper connecting rod (3b) and a lower connecting rod (3c) whose ends are hinged to each other, the upper connecting rod (3b) is rotatably connected to the front of the seat frame (2), the lower connecting rod (3c) is rotatably connected to the base (1), and the electric angle adjuster (3a) is used to drive the lower connecting rod (3c) to rotate relative to the base (1); The collapse structure is arranged at the hinged position of the upper connecting rod (3b) and the lower connecting rod (3c).

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