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 cushion crumple mechanism replaces a second connecting rod of the two-connecting-rod mechanism and comprises a crumple rod, a guide sleeve rod and a connecting piece. The seat cushion crumple mechanism has the advantages that the seat cushion crumple mechanism is additionally arranged, so that when 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 the seat cushion framework quickly returns to an initial position.

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, comprising: a seat pan frame, a seat cushion frame with one end hinged to the seat pan frame, a connecting rod seat cushion angle adjustment mechanism installed between the seat pan frame and the seat cushion frame for adjusting the seat cushion frame angle, and 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;

[0006] The connecting rod seat cushion angle adjustment mechanism supports the seat pan frame and the seat cushion frame through two sets of two-link mechanisms, and the seat cushion collapse mechanism is installed on the two-link mechanism. After the car collides, 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;

[0007] 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.

[0008] As a preferred embodiment of the utility model, the connecting rod seat cushion angle adjustment mechanism comprises: a screw motor, a motor bracket, a synchronous 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 synchronous rod, the synchronous rod is rotatably connected to the seat basin frame, the two-link mechanism comprises: 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 synchronous rod, the free end of the second link is hinged to the front end position of the bottom of 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 synchronous rod, and the two-link mechanism drives the seat cushion frame angle adjustment;

[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 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.

[0011] As a preferred embodiment of the present invention, 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.

[0012] The advantages and positive effects of the utility model are:

[0013] 1. The present invention adds a cushion collapse mechanism to the zero-gravity seat cushion so that after a collision occurs, the lower end of the cushion in the zero-gravity position can collapse and absorb energy through the cushion collapse mechanism, so that the cushion frame can quickly return to its initial position.

[0014] 2. The seat cushion collapse mechanism of the present invention 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.

[0015] 3. The collapse bar of the present invention has a hook lock feature to prevent the seat cushion from rebounding, thereby solving the problem of excessive rebound of the seat cushion after collapse, causing secondary injury to the occupant. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is one of the overall structural schematic diagrams in the utility model.

[0017] Figure 2 This is the second schematic diagram of the overall structure of the present utility model.

[0018] Figure 3 It is the main view of the overall structure of the utility model.

[0019] 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 the utility model.

[0020] Figure 5 It is a schematic diagram of the position of the airbag ejection hole of the seat cushion frame in the utility model.

[0021] Figure 6 It is a schematic diagram of the connection between the connecting rod seat cushion angle adjustment mechanism and the seat basin frame and the seat cushion frame in the utility model.

[0022] Figure 7 It is a schematic diagram of the connection between the connecting rod seat cushion angle adjustment mechanism and the seat cushion collapse mechanism in the utility model.

[0023] Figure 8 It is an exploded view of the connecting rod seat cushion angle adjustment mechanism and the seat cushion collapse mechanism in the utility model.

[0024] Figure numerals: seat basin frame 1, cushion frame 2, connecting rod 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, cushion collapse mechanism 4, collapse rod 401, guide sleeve rod 402, rivet 403, sleeve end 404, locking hook 405. DETAILED DESCRIPTION

[0025] 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.

[0026] See also Figure 1-8 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).

[0027] 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, both ends of the synchronization rod 303 are rotatably connected to the seat basin frame 1, one end of the two two-link mechanisms 304 is welded to the synchronization rod 303, and the other end of the two two-link mechanisms 304 is hinged on the cushion frame 2, the two-link mechanism 304 is composed of a first connecting rod 306, a second connecting rod 307 hinged to the first connecting rod 306, and a hinge shaft 308 connecting the first connecting rod 306 and the second connecting rod 307, the free end of the first connecting rod 306 is welded to the synchronization rod 303, and the free end of the second connecting rod 307 is hinged at the front end position of the bottom of the seat cushion frame 2. The motor bracket 302, the synchronous rod 303, and the first connecting rod 306 are welded together. When the screw motor 301 is started, the screw 305 of the screw motor 301 is extended and pushed the motor bracket 301, and the motor bracket 301 drives the two first connecting rods 306 to move synchronously through the synchronous rod 303, and the two first connecting rods 306 drive the seat cushion frame 2 to be lifted or lowered through their respective second connecting rods 307;

[0028] 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.

[0029] 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 hole to fix the collapse rod 401 and the sleeve end 404 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, the seat pan frame 1 and the cushion frame 2 are impacted by the occupants, and 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, and 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.

[0030] Working principle: The connecting rod seat angle adjustment mechanism 3 is used 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 rod 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 adjustment of the seat cushion frame 2. 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 make the seat cushion frame 2 in the zero-gravity posture quickly return 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; wherein the collapse rod 401 and the guide sleeve rod 402 are connected by the rivet 403, when the seat cushion frame 2 is impacted by the occupant, the rivet 403 is damaged by the shear force, causing the collapse rod 401 and the guide sleeve rod 402 to be displaced, thereby causing the seat cushion frame 2 to dive.

[0031] 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 pot frame, a seat cushion frame hinged at one end to the seat pot frame, a connecting rod seat cushion angle adjustment mechanism installed between the seat pot frame and the seat cushion frame for adjusting the seat cushion frame angle, and 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 connecting rod seat cushion angle adjustment mechanism supports the seat pan frame and the seat cushion frame through two sets of two-link mechanisms, and the seat cushion collapse mechanism is installed on the two-link mechanism. After the car collides, 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; 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.

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 includes: a screw motor, a motor bracket, a synchronization rod, and two two-link mechanisms, the free end of the screw of the screw motor is hinged on the seat basin frame, the screw motor is installed on the motor bracket and hinged with the motor bracket, the motor bracket is fixedly connected to the synchronization rod, and the synchronization rod is rotatably connected to the seat basin frame. The two-link mechanism includes: a first connecting rod, a second connecting rod hinged to the first connecting rod, and a hinge shaft connecting the first connecting rod and the second connecting rod, the free end of the first connecting rod is fixedly connected to the synchronization rod, the free end of the second connecting rod is hinged at the front end position of the bottom of the seat cushion frame, the screw of the screw motor is telescopic to push the motor bracket, and the motor bracket drives the two two-link mechanisms to rise synchronously through the synchronization rod, and the two-link mechanism drives the seat cushion frame angle adjustment.

3. A zero-gravity seat collapse mechanism based on occupant protection according to claim 2, characterized in that: The motor bracket, the synchronous rod, and the first connecting rod are welded into one body.

4. The zero-gravity seat collapse mechanism based on occupant protection according to claim 1, 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.

5. The zero-gravity seat collapse mechanism based on occupant protection according to claim 1, 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.

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