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 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 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 collapsing mechanism comprises a collapsing guiding deformation connecting point arranged on a second connecting rod of the two-connecting-rod mechanism, and after the seat cushion framework is impacted by a passenger, the collapsing guiding deformation connecting point on the second connecting rod is stressed and deformed, so that the seat cushion framework dives. When the seat in the zero-gravity posture is collided, the lower end of the seat cushion crumples and absorbs energy through the seat cushion crumpling mechanism, so that the seat cushion framework quickly returns to the 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 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.

[0008] As a preferred embodiment of the present invention, 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 to 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, 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.

[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 collapse guiding deformation connection point includes one and / or more of the following structures:

[0011] 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;

[0012] 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;

[0013] 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.

[0014] The advantages and positive effects of the utility model are:

[0015] 1. The present invention adds a cushion collapse mechanism to the zero-gravity seat cushion. When the zero-gravity seat collides, the lower end of the cushion collapses and absorbs energy through the cushion collapse mechanism, so that the cushion frame quickly returns to its initial position.

[0016] 2. The seat cushion collapse mechanism of the present invention adopts a 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, causing the seat cushion frame to dive quickly, thereby completing the rapid return of the zero-gravity seat cushion. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 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.

[0019] Figure 3 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.

[0020] Figure 4 It is an exploded view of the connecting rod seat cushion angle adjustment mechanism and the seat cushion collapse mechanism in the utility model.

[0021] 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 guide deformation connection point 401. DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figure 1-4 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).

[0024] 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;

[0025] 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.

[0026] The seat cushion collapse mechanism 4 in this embodiment includes a collapse guiding deformation connection point 401 arranged on the second link 307 of the two-link mechanism 304. The collapse guiding deformation connection point 401 is located between the two hinge shaft ends of the second link 307. The collapse guiding deformation connection point 401 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.

[0027] 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 bowl 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 bowl frame is impacted by the occupant), so that the seat cushion frame 2 returns to the initial position; wherein, 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 401, and when the seat cushion frame 2 is impacted by the occupant, the H-shaped hollow hole position is stressed to break or deform, thereby causing the seat cushion frame 2 to dive.

[0028] 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 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.

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 collapse guide deformation connection point includes one 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.

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