Zero-gravity seat energy absorbing and supporting mechanism based on passenger protection

Abstract

The utility model relates to a zero-gravity seat energy-absorbing and supporting mechanism based on passenger protection, which comprises a seat cushion framework and a seat cushion locking mechanism mounted on the seat cushion framework, the seat cushion locking mechanism comprises an unlocking bracket, a rotating bracket, a cam locking piece for driving the rotating bracket to be separated from the unlocking bracket, an exploder for driving the cam locking piece to rotate and unlock, a pull wire for connecting the exploder with the cam locking piece, and a telescopic damping rod which is arranged between the seat cushion framework and the seat basin and is used for absorbing energy; one end of the telescopic damping rod is hinged to the seat basin, the other end of the telescopic damping rod is hinged to the seat cushion framework, when the seat basin is subjected to zero-gravity posture adjustment on the seat cushion framework, the telescopic damping rod overcomes damping force to stretch upwards, and when the seat basin is driven by the seat cushion locking mechanism to rapidly return, the telescopic damping rod overcomes the damping force to absorb energy and retracts to the initial position; the automobile seat cushion has the advantages that energy is absorbed after high-speed collision through the telescopic damping rod, the seat cushion can return quickly, energy is absorbed, and harm to passengers is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile seats, in particular to an energy absorption and support mechanism of a zero-gravity seat 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. For example, Chinese patent 2024207061787 discloses a zero-gravity seat basin collision energy absorption locking mechanism, comprising: an unlocking bracket rotatably connected to the seat basin through a connecting rod support arm, a rotating bracket engaged with the unlocking bracket through teeth, a cam locking plate driving the rotating bracket to separate from the unlocking bracket, an initiator driving the cam locking plate to rotate and unlock, a pull wire connecting the initiator and the cam locking plate, an energy absorbing friction disk for unlocking after a vehicle collision, and a limiting mechanism for preventing the unlocking bracket from rotating in the opposite direction due to inertia force; this structure realizes rapid return and energy absorption protection of the seat cushion through the energy absorbing friction disk, but the above-mentioned energy absorbing friction disk unlocking is achieved by destroying the internal trigger damping plate to achieve rapid unlocking, which makes the energy absorbing friction disk unable to be reused and has a high cost. Utility Model Content

[0003] In view of the above problems, the purpose of the utility model is to provide a zero-gravity seat energy absorption and support mechanism based on occupant protection, which is used to enable the seat in a zero-gravity posture to absorb energy at the lower end of the seat cushion after a collision, by bursting the unlocking link and retracting the damping rod through the lower end of the seat cushion, and returning the seat cushion to the designed position, thereby optimizing the sitting posture to improve the restraint protection of the occupants, so as to overcome the shortcomings 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 energy absorption and support mechanism based on occupant protection comprises: a cushion frame, two cushion locking mechanisms for quick return of the cushion are symmetrically installed on the cushion frame, the cushion locking mechanism comprises: an unlocking bracket rotatably connected to the seat basin through a connecting rod support arm, a rotating bracket meshing with the unlocking bracket through teeth, a cam locking plate driving the rotating bracket to separate from the unlocking bracket, a detonator driving the cam locking plate to rotate and unlock, and a pull wire connecting the detonator and the cam locking plate. The improvement made is that it also includes: a telescopic damping rod installed between the cushion frame and the seat basin for energy absorption, one end of the telescopic damping rod is hinged to the seat basin, and the other end is hinged to the cushion frame. When the seat basin is adjusted in zero gravity posture on the cushion frame, the telescopic damping rod overcomes the damping force and stretches upward. When the seat basin quickly returns to its original position driven by the cushion locking mechanism, the telescopic damping rod overcomes the damping force to absorb energy and retracts to its initial position.

[0006] As a preferred embodiment of the present invention, the two telescopic damping rods are symmetrically arranged on both sides of the seat basin, one end of the telescopic damping rod is hinged on the connecting rod support arm and the rotating shaft of the seat basin, and the other end of the telescopic damping rod is hinged on the side frame of the seat cushion frame.

[0007] As a preferred embodiment of the present invention, one of the telescopic damping rods is installed in the middle position of the seat cushion frame, one end of the telescopic damping rod is hinged to the middle position of the bottom of the seat basin, and the other end of the telescopic damping rod is hinged to the middle position of the seat cushion frame.

[0008] As a preferred embodiment of the utility model, a synchronization rod is connected between the two seat cushion locking mechanisms, the synchronization rod is hinged with the screw of the screw motor, the screw motor drives the synchronization rod to lift through the screw, the synchronization rod drives the connecting rod support arm to lift through the two seat cushion locking mechanisms, and the connecting rod support arm drives the seat basin to adjust its zero gravity posture.

[0009] The advantages and positive effects of the utility model are:

[0010] 1. The utility model replaces the energy-absorbing friction disk with a telescopic damping rod to absorb energy when the seat basin returns quickly. The telescopic damping rod not only has better energy-absorbing effect and stability than the energy-absorbing friction disk, but also can be reused.

[0011] 2. The screw motor 13 in the present invention is a screw-type structure. Due to its self-locking property, the seat cushion can be lifted and locked at a non-maximum angle, providing the occupant with a zero-gravity sitting posture.

[0012] 3. In the utility model, the telescopic damping rod absorbs energy after a high-speed collision, so that the seat cushion position can be quickly returned and energy can be absorbed, thereby reducing the damage to the occupants. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1It is a schematic diagram of the conventional posture of the seat cushion in the utility model.

[0014] Figure 2 It is a schematic diagram of the zero-gravity posture of the seat cushion in the utility model.

[0015] Figure 3 It is a partial schematic diagram of the zero-gravity posture of the seat cushion in the utility model.

[0016] Figure 4 It is an exploded view of the seat cushion frame, seat basin, seat cushion locking mechanism and telescopic damping rod in the utility model.

[0017] Figure 5 It is a schematic diagram of the seat cushion locking mechanism in the utility model before unlocking.

[0018] Figure 6 It is a schematic diagram of the seat cushion locking mechanism after being unlocked in the utility model.

[0019] Figure 7 It is a schematic diagram of the telescopic damping rod in the utility model after being stretched.

[0020] Figure 8 It is a schematic diagram of the telescopic damping rod in the utility model when it is not stretched.

[0021] Fig. 9 It is a conventional telescopic diagram of the telescopic damping rod in the utility model.

[0022] Fig.10 It is a schematic diagram of the telescopic damping rod in the utility model retracting when subjected to a large impact.

[0023] Figure numerals: seat cushion frame 1, seat cushion locking mechanism 2, connecting rod support arm 3, seat basin 4, unlocking bracket 5, rotating bracket 6, cam locking plate 7, pull wire 8, telescopic damping rod 9, rotating shaft 10, hinged seat 11, synchronization rod 12, screw motor 13. DETAILED DESCRIPTION

[0024] See also Figure 1-10The present embodiment provides a zero-gravity seat energy absorption and support mechanism based on occupant protection, comprising: a cushion frame 1, two cushion locking mechanisms 2 for quick return of the cushion are symmetrically installed on the cushion frame 1, the cushion locking mechanism 2 comprises: an unlocking bracket 5 rotatably connected to the seat basin 4 through a connecting rod support arm 3, a rotating bracket 6 meshing with the unlocking bracket 5 through teeth, a cam locking plate 7 driving the rotating bracket 6 to separate from the unlocking bracket 5, a detonator driving the cam locking plate 7 to rotate and unlock, a pull wire 8 connecting the detonator and the cam locking plate 7, and two telescopic damping rods 9 installed between the cushion frame 1 and the seat basin 4 for energy absorption, one end of the two telescopic damping rods 9 is hinged on the connecting rod support arm 3 and the rotating shaft 10 of the seat basin 4 (sharing a rotating shaft), and the other end is hinged on the hinge seat 11 on the side of the cushion frame 1, when the seat basin 4 is adjusted to zero gravity posture on the cushion frame 1, the two telescopic damping rods 9 overcome the damping force and stretch upward, and the seat basin 4 is in the seat

[0025] In this embodiment, a synchronization rod 12 is connected between the two seat cushion locking mechanisms 2. The synchronization rod 12 is hinged with the screw of the screw motor 13. The screw motor 13 drives the synchronization rod 12 to lift through the screw. The synchronization rod 12 drives the connecting rod support arm 3 to lift through the two seat cushion locking mechanisms 2 (which act as a connecting rod before being unlocked). The connecting rod support arm 3 drives the seat basin 4 to adjust the zero gravity posture (lifting and lowering).

[0026] Working principle: the seat basin is subjected to the impact force of the occupant, and the seat cushion locking mechanism 2 receives the detonator signal to unlock. After unlocking, the seat cushion locking mechanism 2 causes the connecting rod support arm 3 to rotate downward. At the same time, the telescopic damping rod 9 overcomes the damping force to absorb energy. After the telescopic damping rod 9 is subjected to high-speed movement (impact acceleration), the damping force is greatly increased, thereby absorbing energy. After the collision, in order to prevent the seat cushion from rebounding, the seat cushion locking mechanism 2 has a self-locking function, which can solve the problem of excessive rebound during the rapid return of the seat cushion causing secondary injury to the occupant.

[0027] 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 energy absorption and support mechanism based on occupant protection, comprising: The seat frame and the seat cushion frame have two seat cushion locking mechanisms symmetrically installed on them for quick return of the seat cushion. The seat cushion locking mechanism comprises: an unlocking bracket rotatably connected to the seat basin through a connecting rod support arm, a rotating bracket meshing with the unlocking bracket through teeth, a cam locking plate driving the rotating bracket to separate from the unlocking bracket, a detonator driving the cam locking plate to rotate and unlock, and a pull wire connecting the detonator and the cam locking plate, characterized in that it also comprises: a telescopic damping rod installed between the seat cushion frame and the seat basin for energy absorption, one end of the telescopic damping rod being hinged on the seat basin, and the other end being hinged on the seat cushion frame, when the seat basin is subjected to zero gravity posture adjustment on the seat cushion frame, the telescopic damping rod overcomes the damping force and stretches upward, and when the seat basin quickly returns to its original position driven by the seat cushion locking mechanism, the telescopic damping rod overcomes the damping force to absorb energy and retracts to its initial position.

2. The zero-gravity seat energy absorption and support mechanism based on occupant protection according to claim 1, characterized in that: The two telescopic damping rods are symmetrically arranged on both sides of the seat basin, one end of the telescopic damping rod is hinged on the connecting rod support arm and the rotating shaft of the seat basin, and the other end of the telescopic damping rod is hinged on the side frame of the seat cushion frame.

3. The zero-gravity seat energy absorption and support mechanism based on occupant protection according to claim 1, characterized in that: One of the telescopic damping rods is installed at the middle position of the seat cushion frame, one end of the telescopic damping rod is hinged at the middle position of the bottom of the seat pan, and the other end of the telescopic damping rod is hinged at the middle position of the seat cushion frame.

4. The zero-gravity seat energy absorption and support mechanism based on occupant protection according to claim 1, characterized in that: A synchronization rod is connected between the two seat cushion locking mechanisms. The synchronization rod is hinged with the screw of the screw motor. The screw motor drives the synchronization rod to lift through the screw. The synchronization rod drives the connecting rod support arm to lift through the two seat cushion locking mechanisms. The connecting rod support arm drives the seat basin to adjust its zero gravity posture.

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