Zero-gravity seat crumple mechanism based on passenger protection

Abstract

The utility model relates to a zero-gravity seat crumple mechanism based on passenger protection. Comprising a seat basin framework, a seat cushion framework with one end hinged to the seat basin framework, a connecting rod seat cushion angle adjusting mechanism installed between the seat basin framework and the seat cushion framework and used for adjusting the angle of the seat cushion framework, and a seat cushion crumple mechanism installed on the connecting rod seat cushion angle adjusting mechanism and used for enabling the seat cushion framework to rapidly return to the initial position after automobile collision. The cushion airbag protection device is popped up to support and protect legs of a passenger after the automobile is collided; the seat cushion crumple mechanism has the advantages that the seat cushion crumple mechanism and the seat cushion air bag protection device which have a synergistic effect are additionally arranged, so that after a seat in a zero-gravity posture is collided, the lower end of the seat cushion crumple and absorbs energy through the seat cushion crumple mechanism, and a seat cushion framework quickly returns to an initial position; the upper end of the cushion is subjected to air bag explosion, after the air bag is inflated, sufficient support is provided for the thighs of the passenger, and the sitting posture is optimized to improve restraint protection for the passenger.

Description

Technical Field

[0001] The utility model relates to the technical field of zero-gravity seats, in particular to a zero-gravity seat collapse mechanism based on occupant protection. Background Art

[0002] Today's zero-gravity seats are innovative comfort seats. When using zero-gravity seats, passengers can adjust the seats to achieve a large-angle reclining position, which brings a more comfortable sitting position. However, due to the large lifting angle of the seat cushion of the zero-gravity seat, the passengers are in a lying position, and the adjustment range of the seat belt is limited. In an emergency, the restraint force of the seat belt on the body is not enough to fully protect the passengers, which poses a safety hazard. Now there is an urgent need for a zero-gravity seat collapse mechanism based on passenger protection, so that the zero-gravity seat can achieve an optimized sitting position after a collision to improve the restraint protection of the passengers. Utility Model Content

[0003] In view of the above problems, the purpose of the present utility model is to provide a zero-gravity seat collapse mechanism based on occupant protection, which is used to offset the energy of the occupants after a collision and achieve zero-gravity sitting occupant protection to overcome the deficiencies of the above-mentioned prior art.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A zero-gravity seat collapse mechanism based on occupant protection comprises: a seat basin frame, a seat cushion frame hinged at one end to the seat basin frame, a connecting rod seat cushion angle adjustment mechanism installed between the seat basin frame and the seat cushion frame for adjusting the seat cushion frame angle, a seat cushion collapse mechanism installed on the connecting rod seat cushion angle adjustment mechanism for quickly returning the seat cushion frame to an initial position after a car collision (the seat basin frame is impacted by an occupant), and a seat cushion support protection device for supporting and protecting the occupant's legs after a car collision, wherein the seat cushion collapse mechanism is installed on a connecting rod of the connecting rod seat cushion angle adjustment mechanism.

[0006] As a preferred embodiment of the present invention, the connecting rod seat cushion angle adjustment mechanism comprises: a screw motor, a motor bracket, a synchronization rod, and two two-link mechanisms, the screw free end of the screw motor is hinged on the seat basin frame, the screw motor is installed on the motor bracket and hinged to the motor bracket, the motor bracket is fixedly connected to the synchronization rod, the synchronization rod is rotatably connected to the seat basin frame, one end of the two two-link mechanisms is fixedly connected to the synchronization rod, and the other end of the two two-link mechanisms is hinged to the seat cushion frame, the screw of the screw motor is telescopic to push the motor bracket, the motor bracket drives the two two-link mechanisms to be synchronously lifted through the synchronization rod, and the two-link mechanism drives the seat cushion frame angle adjustment;

[0007] The seat cushion collapse mechanism is installed on the two-link mechanism. After a car collision (the seat pan frame is impacted by the occupant), the seat cushion collapse mechanism drives the two-link mechanism to collapse and deform, so that the seat cushion frame returns to the initial position.

[0008] As a preferred embodiment of the present invention, the two-link mechanism includes: a first link, a second link hinged to the first link, and a hinge shaft connecting the first link and the second link, the free end of the first link is fixedly connected to the synchronization rod, and the free end of the second link is hinged at the front end position of the bottom of the seat cushion frame.

[0009] As a preferred embodiment of the present invention, the motor bracket, the synchronization rod, and the first connecting rod are welded into one body.

[0010] As a preferred embodiment of the present invention, the seat cushion collapse mechanism replaces the second link of the two-link mechanism, and the seat cushion collapse mechanism includes: a collapse rod, a guide sleeve rod, and a connecting piece, one end of the collapse rod is hinged on the seat cushion frame, and the other end of the collapse rod is inserted in the sleeve end of the guide sleeve rod, the collapse rod and the sleeve end are fixedly connected by a connecting piece inserted from the side (the collapse rod and the sleeve end are both provided with avoidance holes, and the connecting piece passes through the avoidance holes to connect the collapse rod and the sleeve end together), the other end of the guide sleeve rod is hinged to the first link of the two-link mechanism, and after the seat cushion frame is impacted by the occupant, the connecting piece is damaged by the shear force, causing the collapse rod to slide downward in the sleeve end, thereby causing the seat cushion frame to dive.

[0011] As a preferred embodiment of the present invention, the connecting member is a rivet, a bolt or a retaining rod, and the material hardness of the connecting member is lower than the material hardness of the crush rod and the guide sleeve rod.

[0012] As a preferred embodiment of the utility model, the portion of the collapse rod passing through the sleeve end is provided with a locking hook, and the locking hook is used to prevent the seat cushion frame from rebounding too much after collapse and causing secondary injury to the occupant.

[0013] As a preferred embodiment of the present invention, the seat cushion collapse mechanism includes a collapse guide deformation connection point arranged on the second link of the two-link mechanism, the collapse guide deformation connection point is located between the two hinge shaft ends of the second link, the support strength at the collapse guide deformation connection point is lower than the strength of the two hinge shaft ends, after the seat cushion frame is impacted by the occupant, the collapse guide deformation connection point on the second link is deformed by force, causing the seat cushion frame to dive.

[0014] As a preferred embodiment of the present invention, the collapse guiding deformation connection point includes one and / or more of the following structures:

[0015] The first type: a hollow hole is opened on the second connecting rod, and the strength of the second connecting rod at the hollow hole is weaker than the strength at both ends;

[0016] The second type: a groove is provided on the second connecting rod, and the strength of the groove of the second connecting rod is weaker than the strength at both ends;

[0017] The third type: a bending section is provided on the second connecting rod, and the bending section of the second connecting rod is integrally formed with both ends;

[0018] As a preferred embodiment of the present invention, the seat cushion collapse mechanism includes: a hard rubber sleeve installed on the hinge shaft of the two-link mechanism (the principle is the same as the rubber sleeve of the automobile chassis swing arm), the first link and the second link are hinged on the hard rubber sleeve, and after the seat cushion frame is impacted by the occupant, the hard rubber sleeve at the hinge between the first link and the second link is deformed by force, causing the hinge between the first link and the second link to be displaced, thereby causing the seat cushion frame to dive.

[0019] As a preferred embodiment of the utility model, the middle hole of the hard rubber sleeve is sleeved on the hinge shaft of the two-link mechanism, and shielding shoulders are provided at both ends of the hard rubber sleeve. The first connecting rod and the second connecting rod are hinged on the outer circumference of the hard rubber sleeve and are located between the two shielding shoulders.

[0020] As a preferred embodiment of the present invention, the seat cushion supporting protection device is a seat cushion airbag protection device, which includes: a seat cushion airbag mounting cavity installed at the bottom of the seat cushion frame, a seat cushion airbag located in the seat cushion airbag mounting cavity, and an airbag pop-up hole opened in the middle position of the seat cushion frame. After the seat cushion airbag is popped out, it contacts the seat cushion foam through the airbag pop-up hole and props up the seat cushion foam and the seat cushion skin to support the legs of the occupant, so that the occupant's legs will not fall rapidly and cause injury to the occupant when the seat cushion collapses back to its position.

[0021] As a preferred embodiment of the present invention, the seat cushion airbag protection device is started synchronously with the seat cushion collapse mechanism, that is, when the seat cushion collapse mechanism is started to make the seat cushion frame fall, the airbag of the seat cushion airbag protection device also pops out synchronously.

[0022] The advantages and positive effects of the utility model are:

[0023] 1. The utility model adds a synergistic seat cushion collapse mechanism and a seat cushion airbag protection device to the zero-gravity seat cushion, so that after a collision occurs, the lower end of the seat cushion in the zero-gravity posture seat collapses and absorbs energy through the seat cushion collapse mechanism, so that the seat cushion frame quickly returns to the initial position; and the airbag at the upper end of the seat cushion is detonated. After the airbag is inflated, it provides sufficient support for the thighs of the occupant (to offset the energy after the collision), thereby optimizing the sitting posture to improve the restraint protection of the occupant.

[0024] 2. The seat cushion collapse mechanism of the utility model adopts a collapse rod telescopic form, that is, a rivet with a material strength lower than that of the collapse rod and the guide sleeve rod is used as the collapse point. When the seat cushion frame is impacted by the occupant, the rivet between the collapse rod and the guide sleeve rod is damaged by the shear force, causing the collapse rod to slide downward in the sleeve end, thereby causing the seat cushion frame to dive quickly, completing the rapid return of the zero-gravity seat cushion.

[0025] 3. The seat cushion collapse mechanism of the utility model can also adopt the connecting rod deformation and destruction form, that is, a hollow hole is opened on the connecting rod as a collapse guide deformation connection point. When the seat cushion frame is impacted by the occupant, the collapse hollow hole located in the middle position of the second connecting rod is deformed by force, so that the seat cushion frame quickly dives and completes the rapid return of the zero-gravity seat cushion.

[0026] 4. The seat cushion collapse mechanism of the utility model can also use a hard rubber sleeve to achieve the displacement of the hinge, that is, a hard rubber sleeve is installed on the hinge shaft of the two connecting rods. When the seat cushion frame is impacted by the occupant, the rubber is deformed to cause the hinge between the first connecting rod and the second connecting rod to displace, thereby causing the seat cushion frame to dive.

[0027] 5. The utility model provides collision protection for the rapid return of the zero-gravity seat cushion by adding a seat cushion airbag protection device. The seat cushion airbag protection device receives the collision signal, and the airbag is detonated to provide support and protection for the occupant's legs, thereby offsetting the energy of the occupant after the collision, and plays a key role in protecting the occupants in the zero-gravity sitting position. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is one of the overall structural diagrams of Example 1 in the utility model.

[0029] Figure 2 This is the second overall structural diagram of Example 1 in the utility model.

[0030] Figure 3 It is a front view of the overall structure of Example 1 of the present utility model.

[0031] Figure 4 It is a schematic diagram of the connection between the connecting rod seat cushion angle adjustment mechanism and the bottom of the seat cushion frame in Example 1 of the present utility model.

[0032] Figure 5 It is a schematic diagram of the position of the airbag ejection hole of the seat cushion frame of Example 1 of the present utility model.

[0033] Figure 6 It is a schematic diagram of the connection between the connecting rod seat cushion angle adjustment mechanism of Example 1 of the present utility model and the seat basin frame and the seat cushion frame.

[0034] Figure 7 It is one of the overall structural schematic diagrams of the seat cushion airbag protection device of Example 1 in the utility model.

[0035] Figure 8 This is the second schematic diagram of the overall structure of the seat cushion airbag protection device of Example 1 in the utility model.

[0036] Fig. 9 This is the third schematic diagram of the overall structure of the seat cushion airbag protection device of Example 1 in the utility model.

[0037] Fig.10 It is a schematic diagram of the connection between the connecting rod seat cushion angle adjustment mechanism and the seat cushion collapse mechanism of Example 1 of the utility model.

[0038] Fig.11 It is an exploded view of the connecting rod seat cushion angle adjustment mechanism and the seat cushion collapse mechanism of Example 1 of the utility model.

[0039] Fig.12 It is a schematic diagram of the overall structure of Example 2 of the present utility model.

[0040] Fig.13 It is a schematic diagram of the connection between the connecting rod seat cushion angle adjustment mechanism of Example 2 of the present utility model and the seat basin frame and the seat cushion frame.

[0041] Fig.14 It is a schematic diagram of the connection between the connecting rod seat cushion angle adjustment mechanism and the seat cushion collapse mechanism of Example 2 of the present utility model.

[0042] Fig.15 It is an exploded view of the connecting rod seat cushion angle adjustment mechanism and the seat cushion collapse mechanism of Example 2 of the present utility model.

[0043] Fig.16 It is a schematic diagram of the overall structure of Example 3 of the present utility model.

[0044] Fig.17 It is a schematic diagram of the connection between the connecting rod seat cushion angle adjustment mechanism and the seat cushion collapse mechanism of Example 3 of the present utility model.

[0045] Fig.18 It is an exploded view of the connecting rod seat cushion angle adjustment mechanism and the seat cushion collapse mechanism of Example 3 of the utility model.

[0046] Figure numerals: seat basin frame 1, cushion frame 2, connecting rod seat cushion angle adjustment mechanism 3, screw motor 301, motor bracket 302, synchronization rod 303, two-link mechanism 304, screw 305, first connecting rod 306, second connecting rod 307, hinge shaft 308, seat cushion collapse mechanism 4, collapse rod 401, guide sleeve rod 402, rivet 403, sleeve end 404, locking hook 405, collapse guide deformation connection point 406, hard rubber sleeve 407, seat cushion airbag protection device 5, seat cushion airbag installation cavity 501, seat cushion airbag 502, airbag pop-up hole 503. DETAILED DESCRIPTION

[0047] In the following description, for the purpose of illustration, in order to provide a comprehensive understanding of one or more embodiments, many specific details are set forth. However, it is apparent that these embodiments may also be implemented without these specific details. In other examples, for ease of describing one or more embodiments, known structures and devices are shown in the form of block diagrams.

[0048] Example 1

[0049] See also Figure 1-11 The present embodiment provides a zero-gravity seat collapse mechanism based on occupant protection, comprising: a seat pan frame 1, a cushion frame 2, a connecting rod cushion angle adjustment mechanism 3, and a cushion collapse mechanism 4. The bottom of the seat pan frame 1 is fixedly connected to the chassis of the automobile, the rear end of the cushion frame 2 is hinged to the rear end of the seat pan frame 1, the front end of the cushion frame 2 is installed on the front end of the seat pan frame 1 through the connecting rod cushion angle adjustment mechanism 3, the connecting rod cushion angle adjustment mechanism 3 is used for adjusting the angle of the cushion frame 2, the cushion collapse mechanism 4 is installed on the angle adjustment mechanism 3, and the cushion collapse mechanism 4 is used to quickly return the cushion frame 2 to its initial position after a car collision (the seat pan frame is impacted by the occupant).

[0050] See also Figure 4 , Figure 6 , Fig.10 and Fig.11 The connecting rod cushion angle adjustment mechanism 3 in this embodiment includes: a screw motor 301, a motor bracket 302, a synchronization rod 303, and two two-link mechanisms 304. The free end of the screw 305 of the screw motor 301 is hinged on the seat basin frame 1, the motor end of the screw motor 301 is hinged on the motor bracket 302, the motor bracket 302 is welded on the synchronization rod 303, and the two ends of the synchronization rod 303 are rotatably connected to the seat basin frame 1. The two two-link mechanisms One end of 304 is welded to the synchronization rod 303, and the other end of the two two-link mechanism 304 is hinged on the cushion frame 2. The two-link mechanism 304 is composed of a first link 306, a second link 307 hinged to the first link 306, and a hinge shaft 308 connecting the first link 306 and the second link 307. The free end of the first link 306 is welded to the synchronization rod 303, and the free end of the second link 307 is hinged at the front end position of the bottom of the cushion frame 2. Among them, the motor bracket 302, the synchronization rod 303, and the first link 306 are welded into one body. When the screw motor 301 is started, the screw 305 of the screw motor 301 is extended and retracted to push the motor bracket 301, and the motor bracket 301 drives the two first links 306 to move synchronously through the synchronization rod 303, and the two first links 306 drive the cushion frame 2 to lift or fall through their respective second links 307;

[0051] The seat cushion collapse mechanism 4 in this embodiment is installed on the two-link mechanism 304. After a car collision (the seat pan frame is impacted by the occupant), the seat cushion collapse mechanism 4 drives the two-link mechanism 304 to collapse and deform, so that the seat cushion frame 2 returns to the initial position.

[0052] See also Fig.10 and Fig.11 The cushion collapse mechanism 4 in this embodiment is a second link 307 replacing the two-link mechanism 304. The cushion collapse mechanism 4 includes a collapse rod 401, a guide sleeve rod 402, and a rivet 403. One end of the collapse rod 401 is hinged on the cushion frame 2, and the other end of the collapse rod 401 is inserted into the sleeve end 404 of the guide sleeve rod 402. The collapse rod 401 and the sleeve end 404 are fixedly connected by the rivet 403 inserted from the side. The collapse rod 401 and the sleeve end 404 are both provided with avoidance holes. The rivet 403 passes through the avoidance holes to fix the collapse rod 401 and the sleeve end 404 in place. Together, the other end of the guide sleeve rod 402 is hinged to the first connecting rod 306. Since the material hardness of the rivet 403 is lower than the material hardness of the crush rod 401 and the guide sleeve rod 402, when the car collides and the seat pan frame 1 and the cushion frame 2 are impacted by the occupants, the rivet 403 is damaged by the shear force, causing the crush rod 401 to slide downward in the sleeve end 404, thereby causing the cushion frame 2 to dive. In order to prevent the cushion frame 2 from rebounding, the tail end portion of the crush rod 401 that passes through the sleeve end 404 is provided with a locking hook 405. The locking hook 405 is used to prevent the cushion frame 2 from rebounding too much after collapse and causing secondary injury to the occupants.

[0053] See also Figure 2 , Figure 7 , Figure 8 , Fig. 9 The seat cushion support and protection device in this embodiment is a seat cushion airbag protection device 5. The seat cushion airbag protection device 5 is used to pop out after a car collision (the seat pan frame is impacted by the occupant) to support and protect the occupant's legs, thereby achieving the offset of the occupant's energy after the collision, and playing a key role in protecting the occupant in a zero-gravity sitting position. The seat cushion airbag protection device 5 includes: a seat cushion airbag installation cavity 501 installed at the bottom of the seat cushion frame 2, a seat cushion airbag 502 located in the seat cushion airbag installation cavity 501, and an airbag pop-up hole 503 opened in the middle position of the seat cushion frame 2. When the car collides, after the seat pan frame 1 and the seat cushion frame 2 are impacted by the occupant, the seat cushion airbag protection device 5 and the seat cushion collapse mechanism 4 act synchronously. After the seat cushion airbag 502 pops out, it contacts the seat cushion foam through the airbag pop-up hole 503 and props up the seat cushion foam and the seat cushion skin to support the occupant's legs, so that the occupant's legs will not fall rapidly when the seat cushion collapses back to its original position, causing the occupant to be injured.

[0054] The workflow includes the following steps:

[0055] Step S1: Use the connecting rod seat angle adjustment mechanism 3 to control the lifting of the seat cushion frame 2 for zero gravity height adjustment, wherein the motor bracket 302 is pushed by the extension and retraction of the screw 305 on the screw motor 301, and the motor bracket 302 is used to drive the two two-link mechanisms 304 to be lifted synchronously through the synchronization rod 303, and then the two-link mechanism 304 is used to drive the angle of the seat cushion frame 2 to be adjusted.

[0056] Step S2: when the seat cushion frame 2 is in a zero-gravity posture and a car collision occurs (the seat pan frame is impacted by the occupant), the seat cushion collapse mechanism 4 is used to quickly return the seat cushion frame 2 in the zero-gravity posture to the initial position, wherein the seat cushion collapse mechanism 4 drives the two-link mechanism 304 of the connecting rod seat cushion angle adjustment mechanism 3 to collapse and deform after the car collision (the seat pan frame is impacted by the occupant), so that the seat cushion frame 2 returns to the initial position;

[0057] The cushion collapse mechanism 4 uses the following three modes to control the collapse of the two-link mechanism 304, thereby driving the cushion frame 2 to dive;

[0058] The first form of the cushion collapse mechanism 4 is: the collapse rod 401 and the guide sleeve rod 402 are connected by rivets 403. When the cushion frame 2 is impacted by the occupant, the rivet 403 is damaged by the shear force, so that the collapse rod 401 and the guide sleeve rod 402 are displaced, thereby causing the cushion frame 2 to dive;

[0059] The second form of the cushion collapse mechanism 4 is: an H-shaped hollow hole is provided on the second link 307 of the two-link mechanism 304, and the H-shaped hollow hole is used to reduce the strength of the second link at the collapse guide deformation connection point 406. When the cushion frame 2 is impacted by the occupant, the H-shaped hollow hole is stressed to break or deform, thereby causing the cushion frame 2 to dive.

[0060] The third form of the cushion collapse mechanism 4 is: a hard rubber sleeve 407 is installed on the hinge shaft 308 where the first link 306 and the second link 307 of the two-link mechanism 304 are hinged. When the cushion frame 2 is impacted by the occupant, the hard rubber sleeve 407 at the hinge between the first link 306 and the second link 307 is deformed by force, causing the hinge between the first link 306 and the second link 307 to be displaced, thereby causing the cushion frame 2 to dive.

[0061] Step S3: When the cushion collapse mechanism 4 in step S2 controls the cushion frame 2 to dive, the cushion airbag protection device 5 is synchronously started, and the cushion airbag protection device 5 is used to support the legs of the occupant when the cushion frame 2 dives, so as to offset the energy of the occupant after the collision. After the cushion airbag protection device 5 receives the collision signal, the cushion airbag 502 explodes and pops out from the cushion airbag mounting cavity 501. After the cushion airbag 502 pops out, it bulges from the airbag pop-up hole 503 and props up the cushion foam and skin. The legs in contact with the cushion skin are lifted upward with the support of the cushion airbag 502, thereby offsetting the damage to the occupant's legs caused by the diving of the cushion frame 2.

[0062] Example 2

[0063] See also Figure 12-Figure 15 The seat cushion collapse mechanism 4 in this embodiment includes a collapse guiding deformation connection point 406 arranged on the second link 307 of the two-link mechanism 304. The collapse guiding deformation connection point 406 is located between the two hinge shaft ends of the second link 307. The collapse guiding deformation connection point 406 is an H-shaped hollow hole opened on the second link 307. The strength at the H-shaped hollow hole is weaker than the strength at both ends. When the seat cushion frame 2 is impacted by the occupant, the H-shaped hollow hole on the second link 307 is deformed by force, causing the seat cushion frame 2 to dive.

[0064] Example 3

[0065] See also Figure 16-18 The cushion support protection device in this embodiment is a cushion airbag protection device 4. The cushion collapse mechanism 4 includes: a hard rubber sleeve 407 installed on the hinge shaft 308 of the two-link mechanism 304 (the hard rubber sleeve 407 has the same principle as the rubber sleeve of the automobile chassis swing arm), the first link 306 and the second link 307 are hinged on the hard rubber sleeve 407, the middle hole of the hard rubber sleeve 407 is sleeved on the hinge shaft 308, and shielding shoulders are arranged at both ends of the hard rubber sleeve 308. The first link 306 and the second link 307 are hinged on the outer circumference of the hard rubber sleeve 407 and are located between the two shielding shoulders. When the cushion frame 2 is impacted by the occupant, the hard rubber sleeve 407 at the hinge of the first link 306 and the second link 307 is deformed by force (using rubber deformation), so that the hinge of the first link 306 and the second link 307 is displaced, thereby causing the cushion frame 2 to dive.

[0066] The above are only specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A zero-gravity seat collapse mechanism based on occupant protection, characterized in that: include: A seat basin frame, a seat cushion frame with one end hinged on the seat basin frame, a connecting rod seat cushion angle adjustment mechanism installed between the seat basin frame and the seat cushion frame for adjusting the angle of the seat cushion frame, a seat cushion collapse mechanism installed on the connecting rod seat cushion angle adjustment mechanism for quickly returning the seat cushion frame to an initial position after a car collision, and a seat cushion support protection device for supporting and protecting the legs of an occupant after a car collision, wherein the seat cushion collapse mechanism is installed on a connecting rod of the connecting rod seat cushion angle adjustment mechanism.

2. A zero-gravity seat collapse mechanism based on occupant protection according to claim 1, characterized in that: The connecting rod seat cushion angle adjustment mechanism comprises: a screw motor, a motor bracket, a synchronization rod, and two two-link mechanisms, the screw motor's screw free end is hinged on the seat basin frame, the screw motor is mounted on the motor bracket and hinged to the motor bracket, the motor bracket is fixedly connected to the synchronization rod, the synchronization rod is rotatably connected to the seat basin frame, one end of the two two-link mechanisms is fixedly connected to the synchronization rod, the other end of the two two-link mechanisms is hinged on the seat cushion frame, the screw motor's screw is telescopic to push the motor bracket, the motor bracket drives the two two-link mechanisms to be synchronously lifted through the synchronization rod, and the two-link mechanism drives the seat cushion frame to adjust the angle; The seat cushion collapse mechanism is installed on the two-link mechanism. After a car collision, the seat cushion collapse mechanism drives the two-link mechanism to collapse and deform, so that the seat cushion frame returns to the initial position.

3. A zero-gravity seat collapse mechanism based on occupant protection according to claim 2, characterized in that: The two-link mechanism includes: a first link, a second link hinged to the first link, and a hinge shaft connecting the first link and the second link. The free end of the first link is fixed to the synchronization rod, and the free end of the second link is hinged to the front end position of the bottom of the seat cushion frame.

4. The zero-gravity seat collapse mechanism based on occupant protection according to claim 2, characterized in that: The seat cushion collapse mechanism replaces the second link of the two-link mechanism, and the seat cushion collapse mechanism includes: a collapse rod, a guide sleeve rod, and a connecting piece. One end of the collapse rod is hinged on the seat cushion frame, and the other end of the collapse rod is inserted in the sleeve end of the guide sleeve rod. The collapse rod and the sleeve end are fixedly connected by a connecting piece inserted from the side, and the other end of the guide sleeve rod is hinged to the first link of the two-link mechanism. After the seat cushion frame is impacted by the occupant, the connecting piece is damaged by the shear force, causing the collapse rod to slide downward in the sleeve end, thereby causing the seat cushion frame to dive.

5. The zero-gravity seat collapse mechanism based on occupant protection according to claim 4, characterized in that: The connecting member is a rivet, a bolt or a retaining rod, and the material hardness of the connecting member is lower than the material hardness of the crush rod and the guide sleeve rod.

6. The zero-gravity seat collapse mechanism based on occupant protection according to claim 4, characterized in that: The portion of the collapse rod passing through the sleeve end is provided with a locking hook, and the locking hook is used to prevent the seat cushion frame from rebounding too much after collapse and causing secondary injury to the occupant.

7. The zero-gravity seat collapse mechanism based on occupant protection according to claim 2, characterized in that: The seat cushion collapse mechanism includes a collapse guiding deformation connection point arranged on the second link of the two-link mechanism, wherein the collapse guiding deformation connection point is located between the two hinge shaft ends of the second link, and the supporting strength at the collapse guiding deformation connection point is lower than the strength of the two hinge shaft ends. After the seat cushion frame is impacted by the occupant, the collapse guiding deformation connection point on the second link is deformed by force, causing the seat cushion frame to dive.

8. The zero-gravity seat collapse mechanism based on occupant protection according to claim 7, characterized in that: The collapse guiding deformation connection point includes one and / or more of the following structures: The first type: a hollow hole is opened on the second connecting rod, and the strength of the second connecting rod at the hollow hole is weaker than the strength at both ends; The second type: a groove is provided on the second connecting rod, and the strength of the groove of the second connecting rod is weaker than the strength at both ends; The third type: a bending section is provided on the second connecting rod, and the bending section of the second connecting rod is integrally formed with both ends.

9. The zero-gravity seat collapse mechanism based on occupant protection according to claim 3, characterized in that: The seat cushion collapse mechanism includes: a hard rubber sleeve installed on the hinge shaft of the two-link mechanism, the first link and the second link are hinged on the hard rubber sleeve, and after the seat cushion frame is impacted by the occupant, the hard rubber sleeve at the hinge between the first link and the second link is deformed by force, causing the hinge between the first link and the second link to be displaced, thereby causing the seat cushion frame to dive.

10. The zero-gravity seat collapse mechanism based on occupant protection according to claim 1, characterized in that: The seat cushion support protection device is a seat cushion airbag protection device, which includes: a seat cushion airbag installation cavity installed at the bottom of the seat cushion frame, a seat cushion airbag located in the seat cushion airbag installation cavity, and an airbag pop-up hole opened in the middle position of the seat cushion frame. After the seat cushion airbag is popped out, it contacts the seat cushion foam through the airbag pop-up hole and props up the seat cushion foam and the seat cushion skin to support the occupant's legs.

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