Passive safety system based on zero-gravity seat

Abstract

The utility model relates to a passive safety system based on a zero-gravity seat, which comprises a backrest quick return mechanism and a backrest position sensor control assembly which are arranged on a backrest angle adjuster, and the backrest position sensor control assembly comprises a switch pressing sheet fixedly connected to the backrest angle adjuster, a position sensor fixedly connected to a backrest connecting plate, and a switch pressing sheet fixedly connected to the switch pressing sheet. The switch pressing piece synchronously rotates along with the backrest angle adjuster, the position sensor is installed on a movement track line of the switch pressing piece, the position sensor is electrically connected with an exploder of the backrest quick return mechanism, and when the backrest angle adjuster drives the switch pressing piece to make contact with a normally-open contact of the position sensor, the position sensor transmits a communication signal to the exploder. The exploder can explode the backrest quick return mechanism only when receiving a communication signal of the position sensor and a collision signal of the automobile control platform at the same time; the device has the advantages that the position sensor and the backrest and cushion energy absorption unlocking mechanism supplement each other, and constraint protection of the backrest and cushion energy absorption unlocking mechanism is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of zero-gravity seat safety, in particular to a passive safety system based on a zero-gravity seat backrest and a seat cushion. Background Art

[0002] Today's zero-gravity seats are an innovative type of comfort seat. When using a zero-gravity seat, the occupants can adjust the seat to achieve a large-angle reclining position, which provides a more comfortable sitting position. However, due to the large angles between the backrest and the seat cushion of a zero-gravity seat, the occupants are in a lying position, and the adjustment range of the seat belt is limited. In the event of an emergency, the restraining force of the seat belt on the body is not sufficient to fully protect the occupants, posing a safety hazard. For example, Chinese patent CN117429327B discloses a zero-gravity seat with a quick return mechanism and a quick return method thereof, including a backrest quick return mechanism for quick return of the backrest installed between the backrest frame and the angle adjuster, a group of two front angle adjustment mechanisms, and a seat cushion quick return mechanism for quick return of the seat cushion frame installed. The backrest quick return mechanism has the same structure as the seat cushion quick return mechanism. The above structure enables the zero-gravity seat to return quickly in a zero-gravity state, but the backrest quick return mechanism or The seat cushion quick return mechanism has the following problems: since the backrest quick return mechanism or the seat cushion quick return mechanism is a disposable structure, a new backrest quick return mechanism or seat cushion quick return mechanism needs to be replaced after each explosion. When the backrest or seat cushion is in a small angle condition, the occupant injury is not as serious as a large angle, and there is no need to trigger the detonation to unlock and absorb energy. At the same time, when the vehicle encounters non-collision conditions, emergency braking and other conditions, if the vehicle is sensitive, this condition will also mistakenly trigger the detonation to unlock and absorb, resulting in excess cost for replacing the backrest quick return mechanism or the seat cushion quick return mechanism. Utility Model Content

[0003] In view of the above problems, the purpose of the present utility model is to provide a passive safety system based on a zero-gravity seat, which is used to control a quick return mechanism of a backrest or a quick return mechanism of a seat cushion, so as 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 passive safety system based on a zero-gravity seat comprises: a backrest quick return mechanism installed on a backrest angle adjuster, and the improvement made is that it also includes a backrest position sensor control component, the backrest position sensor control component comprises: a switch pressing piece fixedly connected to the backrest angle adjuster, and a position sensor fixedly connected to a backrest connecting plate, the switch pressing piece rotates synchronously with the backrest angle adjuster, the position sensor is installed on the motion trajectory line of the switch pressing piece, the position sensor is electrically connected to the detonator of the backrest quick return mechanism and is used to control the detonator, when the backrest angle adjuster drives the switch pressing piece to contact the normally open contact of the position sensor, the position sensor transmits a connection signal to the detonator, and the detonator can only detonate the backrest quick return mechanism to make the backrest return quickly only when it receives the connection signal of the position sensor and the collision signal of the vehicle control platform at the same time.

[0006] As a preferred embodiment of the utility model, the backrest angle adjuster drives the backrest to adjust the zero-gravity posture. When the backrest angle adjustment stroke is at an angle greater than or equal to 5° with the ground, the switch pressure piece on the backrest angle adjuster contacts the normally open contact of the position sensor, and the position sensor transmits the connection signal to the detonator.

[0007] As a preferred embodiment of the present invention, the switch pressing piece is in an arc shape.

[0008] Another object of the utility model is to provide a passive safety system based on a zero-gravity seat, comprising: a seat cushion quick return mechanism installed on a seat cushion recliner assembly, the improvement made is that it also includes a seat cushion position sensor control component, the seat cushion position sensor control component comprises: a switch pressing piece fixedly connected to the lower connecting plate of the recliner, a position sensor fixedly connected to the upper connecting plate of the recliner, the switch pressing piece rotates synchronously with the seat cushion recliner, the position sensor is installed on the motion trajectory line of the switch pressing piece, the position sensor is electrically connected to the detonator of the seat cushion quick return mechanism and is used to control the detonator, when the seat cushion recliner assembly drives the switch pressing piece to contact the normally open contact of the position sensor, the position sensor transmits a connection signal to the detonator, the detonator can only detonate the seat cushion quick return mechanism to make the seat cushion return quickly only when it receives the connection signal of the position sensor and the collision signal of the vehicle control platform at the same time.

[0009] As a preferred embodiment of the utility model, the seat cushion adjuster drives the backrest to adjust the zero-gravity posture. When the backrest angle adjustment stroke is at an angle greater than or equal to 5° with the ground, the switch pressure piece on the seat cushion adjuster contacts the normally open contact of the position sensor, and the position sensor transmits the connection signal to the detonator.

[0010] As a preferred embodiment of the present invention, the switch pressing piece is in an arc shape.

[0011] The advantages and positive effects of the utility model are as follows: the utility model adds a position sensor to the energy absorption locking mechanism, and when the backrest or seat cushion is at a small angle, there is no need to trigger the detonation unlocking and energy absorption, and the occupant injury is not as high as that at a large angle; at the same time, in non-collision conditions, emergency braking and other conditions of the vehicle, if the vehicle is sensitive, the energy absorption locking system will not be unlocked in this condition, the mechanism will not be damaged, the seat can be used normally, and the economic benefit is high. When the backrest or seat cushion is at a large angle, the vehicle can still detonate and unlock after receiving the collision signal, so that the energy absorption mechanism is unlocked to absorb energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the installation of the backrest and position sensor control assembly in Example 1.

[0013] Figure 2 It is an exploded view of the installation of the position sensor control assembly and the backrest quick return mechanism in Example 1.

[0014] Figure 3 It is a schematic diagram of the connection between the position sensor control component and the backrest quick return mechanism when the backrest design position in Example 1 is at 0°.

[0015] Figure 4 It is a schematic diagram of the connection between the position sensor control component and the backrest quick return mechanism when the backrest design position in Example 1 is at 5°.

[0016] Figure 5 It is a schematic diagram of the connection between the position sensor control component and the backrest quick return mechanism when the backrest design position in Example 1 is between 5° and 20°.

[0017] Figure 6 Schematic diagram of the position sensor control assembly when the backrest design position in Embodiment 1 is at 0°.

[0018] Figure 7 It is a schematic diagram of the position sensor control assembly when the backrest design position in Example 1 is at 5°.

[0019] Figure 8 It is a schematic diagram of the position sensor control assembly when the backrest design position in Example 1 is between 5° and 20°.

[0020] Fig. 9 This is a partial enlarged view of the position sensor in Example 1.

[0021] Fig.10 This is a schematic diagram of the installation of the seat cushion and position sensor control assembly in Example 2.

[0022] Fig.11 It is an exploded view of the installation of the position sensor control assembly and the backrest quick return mechanism in Example 2.

[0023] Fig.12 It is a schematic diagram of the connection between the position sensor control assembly and the seat cushion quick return mechanism when the seat cushion design position in this embodiment 2 is at 0°.

[0024] Fig.13 It is a schematic diagram of the connection between the position sensor control assembly and the seat cushion quick return mechanism when the seat cushion design position in this embodiment 2 is at 5°.

[0025] Fig.14 It is a schematic diagram of the connection between the position sensor control component and the seat cushion quick return mechanism when the seat cushion design position in Example 2 is between 5° and 20°.

[0026] Fig.15 Schematic diagram of the position sensor control assembly when the seat cushion design position in Embodiment 2 is at 0°.

[0027] Fig.16 It is a schematic diagram of the position sensor control assembly when the seat cushion design position in this embodiment 2 is at 5°.

[0028] Fig.17 It is a schematic diagram of the position sensor control assembly when the seat cushion design position in this embodiment 2 is between 5° and 20°.

[0029] Fig.18 The invention discloses a mechanism diagram of an integrated energy absorption system of a zero-gravity seat back collision energy absorption locking mechanism in the prior art.

[0030] Fig.19 It is a system diagram of the detonation function of a zero-gravity seat back collision energy absorption locking mechanism in the prior art.

[0031] Fig. 20 It is an exploded diagram of an energy absorption system of a zero-gravity seat back collision energy absorption locking mechanism in the prior art.

[0032] Fig.21 The invention discloses a relationship diagram of an unlocking & locking mechanism of a zero-gravity seat back collision energy absorption locking mechanism, a recliner and a seat connection plate in the prior art.

[0033] Fig. 22 The invention discloses an energy absorbing friction disk diagram of a zero-gravity seat back collision energy absorbing locking mechanism in the prior art.

[0034] Fig.23 The invention discloses an exploded diagram of an energy absorbing friction disk of a zero-gravity seat back collision energy absorbing locking mechanism in the prior art.

[0035] Fig.24 The present invention is a system diagram of a seat cushion lifting mechanism of a zero-gravity seat driving energy absorbing mechanism in the prior art.

[0036] Fig.25 The invention discloses an exploded diagram of a seat cushion lifting mechanism of a zero-gravity seat driving energy absorbing mechanism in the prior art.

[0037] Fig.26 The invention discloses a design diagram of a seat cushion lifting angle travel stop point of a seat cushion lifting mechanism of a zero-gravity seat driving energy absorption mechanism in the prior art.

[0038] Fig. 27 The present invention is a diagram of a locking mechanism after unlocking of a zero-gravity seat basin collision energy absorption locking mechanism in the prior art.

[0039] Fig.28 The present invention is a schematic diagram of an anti-seat cushion rebound pin of a zero-gravity seat pan collision energy absorption locking mechanism in the prior art.

[0040] Fig.29 The present invention is an exploded view of an anti-seat cushion rebound pin of a zero-gravity seat pan collision energy absorption locking mechanism in the prior art.

[0041] Fig.30 It is an exploded view of an energy absorbing friction disk of a zero-gravity seat pan collision energy absorbing locking mechanism in the prior art.

[0042] Figure numerals: backrest angle adjuster 1, backrest quick return mechanism 2, position sensor control assembly 3, first switch pressing piece 301, first position sensor 302, backrest connecting plate 4, seat cushion angle adjuster assembly 5, seat cushion quick return mechanism 6, seat cushion position sensor control assembly 7, second switch pressing piece 701, second position sensor 702, angle adjuster lower connecting plate 8, angle adjuster upper connecting plate 9. DETAILED DESCRIPTION

[0043] Example 1

[0044] See also Figure 1-9The present embodiment provides a passive safety system based on a zero-gravity seat, comprising: a backrest quick return mechanism 2 and a backrest position sensor control assembly 3 installed on a backrest recliner 1, the backrest position sensor control assembly 3 comprising: a first switch pressing piece 301 fixedly connected to the backrest recliner 1, a first position sensor (micro switch) 302 fixedly connected to the backrest connecting plate 4, the first switch pressing piece 301 rotates synchronously with the backrest recliner 1, and the first position sensor 302 is installed on the motion track of the first switch pressing piece 301. Online, the first position sensor 302 is electrically connected to the detonator of the backrest quick return mechanism 2 and is used to control the detonator. When the backrest adjuster 1 drives the first switch pressing piece 301 to contact the normally open contact of the first position sensor 302, the first position sensor 302 transmits a connection signal to the detonator. The detonator can only detonate the backrest quick return mechanism to make the backrest return quickly only when it receives the connection signal of the first position sensor 302 and the collision signal of the vehicle control platform at the same time; the shape of the first switch pressing piece 301 is arc-shaped.

[0045] The backrest quick return mechanism 2 in this embodiment uses patent number 2024207061819, and the patent name is a zero-gravity seat back collision energy absorption locking mechanism, wherein, refer to the attached Figure 18-23 The specific structure of a zero-gravity seat back collision energy absorption locking mechanism is illustrated. The energy absorption locking mechanism of the zero-gravity seat back collision energy absorption locking mechanism includes an initiator system, a cable system, a drive motor system, an energy absorption friction disc system, an unlocking & locking mechanism system, and a recliner system. The above six subsystems constitute the energy absorption locking mechanism of the backrest; when the backrest is in a zero-gravity posture and a collision occurs, the initiator drives the cable system to pull the cam locking plate to drive the lock tongue to unlock the mechanism, so that the core shaft of the energy absorption friction disc system rotates, triggering the friction between the damping plate and the friction disc housing to achieve energy absorption, thereby protecting the occupants once, and the core shaft rotates. The block point structure and the anti-rebound cam are driven to rotate step by step. The block point structure stops rotating after contacting the block point structure, and the backrest returns to the designed position. The anti-rebound cam falls and contacts the block point structure, so that the energy-absorbing friction disc system stops working in the opposite direction due to the inertial force, thereby providing secondary protection for the occupants. Before the unlocking & locking mechanism is unlocked, the movable disc of the recliner is welded, and the fixed disc of the recliner is welded to the seat connection plate, so that the backrest mechanism can rotate and flip normally, and there is no functional difference from ordinary seats. After the unlocking & locking mechanism is unlocked, the movable disc and the fixed disc of the recliner are both stationary without relative rotational motion. After the unlocking & locking mechanism is unlocked, the work is triggered to absorb the system energy, and the recliner does not participate in the energy absorption process.

[0046] Working principle: The occupant's sitting posture is flipped backward by the backrest angle to achieve a zero-gravity posture. When the backrest angle adjustment travel angle is 0° to 20° (starting from the design position of 0°, the extreme position is 20°), in the range of 0° to 5° when the backrest is adjusted backward, the first position sensor 302 is normally open, and the detonator signal is interconnected with the first position sensor 302 signal. In this working condition, when a collision signal occurs in the backrest energy absorption locking mechanism, the detonator does not work, the energy absorption locking mechanism is not unlocked, and the energy absorption mechanism is not triggered. In the range of 5° to 20° when the backrest is adjusted backward, the first position sensor 302 is normally closed, and the detonator signal is interconnected with the first position sensor 302 signal. In this working condition, when a collision signal occurs in the backrest energy absorption locking mechanism, the detonator works, the energy absorption locking mechanism is unlocked, and the energy absorption mechanism is triggered to absorb energy to protect the occupant.

[0047] Example 2

[0048] See also Figure 10-17 The present embodiment provides a passive safety system based on a zero-gravity seat, including: a seat cushion quick return mechanism 6 and a seat cushion position sensor control assembly 7 installed on a seat cushion recliner assembly 5, the seat cushion position sensor control assembly 7 including: a second switch pressing piece 701 fixedly connected to a lower connecting plate 8 of the recliner, a second position sensor (micro switch) 702 fixedly connected to an upper connecting plate 9 of the recliner, the second switch pressing piece 701 rotating synchronously with the seat cushion recliner, the second position sensor 702 installed at the second switch pressing piece 701 On the motion trajectory line, the second position sensor 702 is electrically connected to the detonator of the seat cushion quick return mechanism 6 and is used to control the detonator. When the seat cushion adjuster assembly 5 drives the second switch pressing piece 701 to contact the normally open contact of the second position sensor 702, the second position sensor 702 transmits a connection signal to the detonator. The detonator can only detonate the seat cushion quick return mechanism to make the seat cushion return quickly when it receives the connection signal of the position sensor and the collision signal of the automobile control platform at the same time; the shape of the second switch pressing piece 701 is arc-shaped.

[0049] The seat cushion quick return mechanism 6 in this embodiment utilizes patent number 2024213167223, and the patent name is a seat cushion lifting mechanism of a zero-gravity seat drive energy absorption mechanism, or utilizes patent number 2024207061787, and the patent name is a zero-gravity seat seat basin collision energy absorption locking mechanism, wherein the seat cushion angle adjuster of a zero-gravity seat seat basin collision energy absorption locking mechanism is driven by an angle adjustment drive motor, and the energy absorption locking mechanism acts as a connecting rod, forming a four-bar linkage with the seat cushion and the support seat, so that the rotational motion is converted into seat cushion angle lifting; the travel stop pin and the lower connecting plate of the angle adjuster jointly realize the seat cushion angle travel limit. The energy absorption locking mechanism triggers unlocking, and the patent patent: 202420706178.7 has described the unlocking process. The seat cushion adjuster fails and does not work during the seat cushion return process; the anti-seat cushion rebound pin performs a secondary lock, and the patent patent: 202420706178.7 has described the locking process. After the seat cushion returns to the designed position, the energy absorption locking mechanism stops working in the opposite direction due to the inertial force, providing secondary protection for the occupant.

[0050] Working principle: When the seat cushion angle adjustment travel angle is 0° to 20° (starting from the design position of 0°, the extreme position is 20°), within the seat cushion upward adjustment range of 0° to 5°, the second position sensor 702 is normally open, the detonator signal and the second position sensor 702 signal are interconnected, and in this working condition, when a collision signal occurs in the seat cushion energy absorption locking mechanism, the detonator does not work, the energy absorption locking mechanism is not unlocked, and the energy absorption mechanism is not triggered. Within the seat cushion upward adjustment range of 5° to 20°, the second position sensor 702 is normally closed, the detonator signal and the second position sensor 702 signal are interconnected, and in this working condition, when a collision signal occurs in the seat cushion energy absorption locking mechanism, the detonator works, the energy absorption locking mechanism is unlocked, and the energy absorption mechanism is triggered to absorb energy to protect the occupant.

[0051] 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 passive safety system based on a zero-gravity seat, comprising: The backrest quick return mechanism installed on the backrest recliner is characterized in that it also includes a backrest position sensor control component, the backrest position sensor control component includes: a switch pressing piece fixedly connected to the backrest recliner, and a position sensor fixedly connected to the backrest connecting plate, the switch pressing piece rotates synchronously with the backrest recliner, the position sensor is installed on the movement trajectory line of the switch pressing piece, the position sensor is electrically connected to the detonator of the backrest quick return mechanism and is used to control the detonator, when the backrest recliner drives the switch pressing piece to contact the normally open contact of the position sensor, the position sensor transmits a connection signal to the detonator, and the detonator can only detonate the backrest quick return mechanism to make the backrest return quickly only when it receives the connection signal of the position sensor and the collision signal of the vehicle control platform at the same time.

2. A passive safety system based on a zero-gravity seat according to claim 1, characterized in that: The backrest angle adjuster drives the backrest to adjust the zero-gravity posture. When the backrest angle adjustment stroke is at an angle greater than or equal to 5° with the ground, the switch pressure piece on the backrest angle adjuster contacts the normally open contact of the position sensor, and the position sensor transmits the connection signal to the detonator.

3. A passive safety system based on a zero-gravity seat according to claim 1, characterized in that: The switch pressing piece is in an arc shape.

4. A passive safety system based on a zero-gravity seat, comprising: The seat cushion quick return mechanism installed on the seat cushion adjuster assembly is characterized in that it also includes a seat cushion position sensor control component, the seat cushion position sensor control component includes: a switch pressure piece fixedly connected to the lower connecting plate of the adjuster, and a position sensor fixedly connected to the upper connecting plate of the adjuster, the switch pressure piece rotates synchronously with the seat cushion adjuster, the position sensor is installed on the movement trajectory line of the switch pressure piece, the position sensor is electrically connected to the detonator of the seat cushion quick return mechanism and is used to control the detonator, when the seat cushion adjuster assembly drives the switch pressure piece to contact the normally open contact of the position sensor, the position sensor transmits a connection signal to the detonator, and the detonator can only detonate the seat cushion quick return mechanism to make the seat cushion return quickly only when it receives the connection signal of the position sensor and the collision signal of the vehicle control platform at the same time.

5. A passive safety system based on a zero-gravity seat according to claim 4, characterized in that: The seat cushion adjuster drives the backrest to adjust the zero-gravity posture. When the backrest angle adjustment stroke is at an angle greater than or equal to 5° with the ground, the switch pressure piece on the seat cushion adjuster contacts the normally open contact of the position sensor, and the position sensor transmits the connection signal to the detonator.

6. A passive safety system based on a zero-gravity seat according to claim 4, characterized in that: The switch pressing piece is in an arc shape.

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