Vehicle collision protection method, protection device, seat belt and vehicle

Abstract

A vehicle collision protection method, protection device, seat belt, and vehicle are disclosed. The vehicle collision protection method comprises the following steps: S1: determining whether the vehicle has experienced a head-on collision; if so, proceeding to step S2; S2: determining whether the airbag and seat belt are properly deployed; if so, proceeding to step S3; S3: determining whether the occupant's movement meets preset conditions; if so, proceeding to step S4; and S4: releasing the occupant's restraint from the seat belt. This vehicle collision protection method can prevent seat belt damage to the occupant's chest after a collision.

Description

Technical Field

[0001] The present invention relates to the field of vehicle occupant protection, and in particular to a vehicle collision protection method, a protection device, a safety belt and a vehicle. Background Art

[0002] As living standards improve, people's demands for vehicle safety performance are also increasing. When a vehicle occupant continues to move forward due to inertia after a head-on collision, the force-limiting seatbelt applies a constant tension to limit the occupant's forward movement while the airbag deploys. However, due to the belt's narrow width, this restraining force can cause damage to the occupant's chest. Summary of the Invention

[0003] The present invention provides a vehicle collision protection method, a protection device, a safety belt and a vehicle. The vehicle collision protection method can prevent the safety belt from damaging the chest of an occupant after a collision.

[0004] The present invention provides a vehicle collision protection method, comprising the following steps:

[0005] S1: Determine whether the vehicle has a head-on collision. If yes, proceed to step S2.

[0006] S2: Determine whether the airbag and seat belt are normally ignited. If the judgment result is yes, proceed to step S3;

[0007] S3: Determine whether the passenger's movement status meets the preset conditions. If so, proceed to step S4;

[0008] S4: Release the restraint of the seat belt on the occupant.

[0009] Furthermore, when the occupant comes into contact with the airbag and the airbag is fully deployed, the restraint of the seat belt on the occupant is released.

[0010] Furthermore, when the occupant contacts the airbag and the supporting force generated by the airbag on the occupant is greater than the restraining force generated by the seatbelt on the occupant, the restraint of the seatbelt on the occupant is released.

[0011] Furthermore, a return spring is provided on a side of the partition away from the shift rod, and the return spring is supported between the partition and the muffler body.

[0012] Furthermore, after a head-on collision occurs in the vehicle, the position of the occupant's head is detected, and when the position of the occupant's head reaches a set position, the restraint of the seat belt on the occupant is released.

[0013] Furthermore, after a head-on collision occurs, the real-time speed of the vehicle is collected. Based on the real-time speed of the vehicle, the corresponding preset time in the pre-stored real-time speed and preset time correspondence table is fished out. If the time elapsed after the seat belt is ignited is greater than the corresponding preset time at the real-time speed, the restriction of the seat belt on the occupant is released.

[0014] The present invention also provides a vehicle collision protection device, including a processing unit, a head-on collision judgment unit, an airbag, a seat belt and an occupant motion status collection unit. The head-on collision judgment unit, the airbag, the seat belt and the occupant motion status collection unit are all electrically connected to the processing unit. The head-on collision judgment unit collects vehicle collision information and transmits the information to the processing unit. The airbag and the seat belt detect their own operating conditions and transmit the information to the processing unit. The occupant motion status collection unit collects the motion status of the occupant after the vehicle collision. When the vehicle is subjected to a head-on collision and the airbag and the seat belt are ignited normally, the processing unit determines whether the occupant motion status meets the set conditions. If the occupant motion status meets the set conditions, the processing unit controls the seat belt to release the restriction on the occupant.

[0015] Furthermore, the vehicle collision protection device also includes an occupant head position measuring device, which detects the occupant's head position and transmits the position information to the processing unit. When the processing unit determines that the occupant's head position reaches a set position, the processing unit controls the seat belt to release the restriction on the occupant.

[0016] Furthermore, the vehicle collision protection device also includes a vehicle speed meter and a timer. The vehicle speed meter detects the real-time vehicle speed at the time of collision and transmits the vehicle speed information to the processing unit. The processing unit pre-stores a correspondence table between real-time vehicle speed and preset time. When the processing unit determines that at the current real-time vehicle speed, the time elapsed after the seat belt is ignited is greater than the corresponding preset time, the processing unit controls the restriction of the seat belt contact on the occupant.

[0017] The present invention also provides a seat belt, including an electromagnetic lock buckle, a lock tongue fixing buckle and a lock tongue guide ring. The electromagnetic lock buckle is arranged on the vehicle body, the seat belt body is passed through the lock tongue guide ring, and the lock tongue fixing buckle is arranged on the lock tongue guide ring. The electromagnetic lock buckle absorbs or releases the lock tongue fixing buckle by whether it is powered on or not. During the tightening process of the seat belt, if the seat belt receives an unlocking signal, the electromagnetic lock buckle automatically releases the lock tongue fixing buckle.

[0018] The present invention also provides a vehicle, which uses the above-mentioned vehicle collision protection method to control the safety belt.

[0019] In the present invention, after a frontal collision of the vehicle, the movement status of the occupant is judged. When the occupant can completely buffer the collision energy by the airbag itself, the seat belt is released from the restraint on the occupant, preventing the occupant's chest from being injured due to excessive restraint force of the seat belt on the occupant.

[0020] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Shown is a flow chart of a vehicle collision method provided by an embodiment of the present invention.

[0022] Figure 2 FIG. 1 is a system block diagram of a vehicle collision protection device according to an embodiment of the present invention.

[0023] Figure 3 Shown is a schematic structural diagram of a safety belt provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0024] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the present invention is described in detail below with reference to the accompanying drawings and preferred embodiments.

[0025] The present invention provides a vehicle collision protection method, a protection device, a safety belt and a vehicle. The vehicle collision protection method can prevent the safety belt from damaging the chest of an occupant after a collision.

[0026] Figure 1 FIG. 1 is a flow chart of a vehicle collision method according to an embodiment of the present invention. Figure 1 As shown, the vehicle collision protection method provided by the embodiment of the present invention includes the following steps:

[0027] S1: Determine whether the vehicle has a head-on collision, if so, proceed to step S2;

[0028] S2: Determine whether the airbag and seat belt are ignited normally. If so, proceed to S3;

[0029] S3: Check whether the passenger's movement status meets the set conditions. If so, proceed to step S4;

[0030] S4: Release the restraint of the seat belt on the occupant.

[0031] In this embodiment, the collision signal of the vehicle can be collected by a head-on collision sensor at the front of the vehicle body to determine whether the vehicle has a head-on collision.

[0032] The operation of the airbag and seat belt itself can be used to determine whether the airbag and seat belt are ignited, that is, whether the airbag is opened and whether the seat belt has a restraining force on the occupant.

[0033] After the airbag deploys and the seatbelt begins tightening, the occupant's motion is checked to see if it meets the set conditions. Since the distance from the occupant's normal head position to the center of the steering wheel or instrument panel is generally fixed for the same vehicle model, the forces acting on the airbag and seatbelt during airbag deployment and seatbelt tightening are also generally determined. Therefore, in this embodiment, these set conditions can be pre-calibrated during vehicle design using various parameters from crash tests. When the occupant's motion meets these conditions, the seatbelt no longer restricts the occupant's movement; that is, the airbag alone cushions the occupant. This prevents chest damage from excessive restraining force from the seatbelt in the later stages of a collision.

[0034] Specifically, the setting condition can be calibrated as the occupant making contact with the airbag and the airbag fully deploying. In this case, even if the seatbelt is fully deployed, the airbag itself can fully cushion the collision energy for the occupant. It is understood that the setting condition is not limited to the above situation and can be determined based on the actual needs of the vehicle. For example, the setting condition can also be calibrated as the occupant making contact with the airbag and the airbag's supporting force on the occupant being greater than the restraining force of the seatbelt.

[0035] Furthermore, after a head-on collision of the vehicle, the pre-calibrated position of the occupant's head can be used to determine the vehicle's safety. That is, after a head-on collision of the vehicle, the position of the occupant's head is detected, and when the occupant's head position reaches the set position, the seat belt's restriction on the occupant is released.

[0036] In other embodiments, the real-time speed of the vehicle at the time of the collision can also be collected. According to the real-time speed of the vehicle, the corresponding preset time in the pre-stored correspondence table of real-time speed and preset time is retrieved. If the time after the seat belt is ignited is greater than the corresponding preset time under the real-time speed, the seat belt restricts the occupant.

[0037] In the present invention, after a frontal collision of the vehicle, the movement status of the occupant is judged. When the occupant can completely buffer the collision energy by the airbag itself, the seat belt is released from the restraint on the occupant, preventing the occupant's chest from being injured due to excessive restraint force of the seat belt on the occupant.

[0038] Figure 2 The following is a system block diagram of the vehicle collision protection device according to an embodiment of the present invention. Figure 2 The present invention also provides a vehicle collision protection device, which includes a processing unit 10, a head-on collision judgment unit 20, an airbag 30, a seat belt 40, and an occupant motion state acquisition unit 50. The head-on collision judgment unit 20, the airbag 30, the seat belt 40, and the occupant motion state acquisition unit 50 are all electrically connected to the processing unit 10. The head-on collision judgment unit 20 collects vehicle collision information and transmits the information to the processing unit 10. The airbag 30 and the seat belt 40 detect their own operating conditions and transmit the information to the processing unit 10. The occupant motion state acquisition unit 50 collects the occupant's motion state after the collision and transmits the information to the processing unit 10. When the vehicle is subjected to a head-on collision and the airbag 30 and the seat belt 40 are both normally ignited, the processing unit 10 determines whether the occupant's motion state meets the set conditions. If the occupant's motion state meets the set conditions, the processing unit 10 controls the seat belt 40 to release the occupant's restraint.

[0039] More specifically, in this embodiment, the occupant movement status acquisition unit 50 includes an occupant head position measuring device to detect the occupant's head position and transmit the position information to the processing unit 10. When the processing unit 10 determines that the occupant's head position reaches the set position, the processing unit 10 controls the seat belt 40 to release the restriction on the occupant.

[0040] In other embodiments of the present invention, the occupant motion status acquisition unit 50 includes a vehicle speed meter and a timer. The vehicle speed meter detects the real-time vehicle speed of the vehicle at the time of collision and transmits the real-time vehicle speed to the processing unit 10. The processing unit 10 pre-stores a correspondence table between real-time vehicle speed and preset time. When the processing unit 10 determines that at the current real-time vehicle speed, the time elapsed after the seat belt 40 is ignited is greater than the corresponding preset time, the processing unit 10 controls the seat belt 40 to release the restriction on the occupant.

[0041] Figure 3 FIG. 1 is a schematic diagram of the structure of a safety belt provided by an embodiment of the present invention. Figure 3 As shown, the present invention further provides a seat belt 40, which includes an electromagnetic lock buckle 41, a lock tongue fixing buckle 42, and a lock tongue guide ring 43. The electromagnetic lock buckle 41 is installed on the vehicle body, the seat belt body (not shown) is inserted into the lock tongue guide ring 43, and the lock tongue fixing buckle 42 is installed on the lock tongue guide ring 43. The electromagnetic lock buckle 41 can attract or release the lock tongue fixing buckle 42 by itself being powered. During the tightening process of the seat belt 40, if the seat belt 40 receives an unlocking signal, the electromagnetic lock buckle 41 automatically releases the lock tongue fixing buckle 42.

[0042] Furthermore, the electromagnetic lock buckle 41 is provided with a manual switch 44. The manual switch 44 is arranged in a raised shape on the surface of the electromagnetic lock buckle 41 on the side facing the lock tongue fixing buckle 42. That is, the manual switch 44 forms a circle of retaining edge on the electromagnetic lock buckle 41. When the occupant needs to actively unfasten the seat belt 40, the seat belt 40 can be unlocked by pressing the manual switch 44. By setting the manual switch 44 in a raised shape on the electromagnetic lock buckle 41, it can prevent the lock tongue fixing buckle 42 from sliding toward the side relative to the electromagnetic lock buckle 41, thereby ensuring the stable connection between the lock tongue fixing buckle 42 and the electromagnetic lock buckle 41.

[0043] Furthermore, a rotating shaft 45 is provided between the locking tongue guide ring 43 and the locking tongue fixing buckle 42 , and the locking tongue guide ring 43 can rotate around the locking tongue fixing buckle 42 along the rotating shaft 45 , so that the occupant can adjust the seat belt body.

[0044] The present invention also provides a vehicle, which uses the above-mentioned vehicle collision protection method to control the seat belt 40.

[0045] In the present invention, through the arrangement of the above-mentioned seat belt, the restraint of the seat belt on the occupant can be easily avoided during the tightening process of the seat belt, thereby preventing the restraining force of the seat belt from causing damage to the chest of the occupant.

[0046] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with the present profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A vehicle collision protection method, characterized by: The steps include: S1: Determine whether the vehicle has a head-on collision. If yes, proceed to step S2. S2: Determine whether the airbag and seat belt are normally ignited. If the judgment result is yes, proceed to step S3; S3: Determine whether the occupant's movement condition meets preset conditions. When the occupant contacts the airbag and the supporting force generated by the airbag on the occupant is greater than the restraining force generated by the seatbelt on the occupant; or after a head-on collision, collect the real-time speed of the vehicle, and retrieve the corresponding preset time from a pre-stored table of real-time speed and preset time correspondences based on the real-time speed of the vehicle. If the time elapsed after the seatbelt is activated is greater than the preset time corresponding to the real-time speed, proceed to step S4. S4: Release the restraint of the seat belt on the occupant.

2. A vehicle collision protection device, characterized in that: The system comprises a processing unit, a frontal collision judgment unit, an airbag, a seat belt and an occupant motion state acquisition unit. The frontal collision judgment unit, the airbag, the seat belt and the occupant motion state acquisition unit are all electrically connected to the processing unit. The frontal collision judgment unit collects the collision information of the vehicle and transmits the information to the processing unit. The airbag and the seat belt detect their own operation conditions and transmit the information to the processing unit. The occupant motion state acquisition unit collects the motion conditions of the occupant after the vehicle collision. When the vehicle is subjected to a frontal collision and the airbag and the seat belt are ignited normally, the processing unit The processing unit determines whether the movement status of the occupant meets the set conditions; when the occupant contacts the airbag and the supporting force generated by the airbag on the occupant is greater than the restraining force generated by the seat belt on the occupant, the processing unit controls the seat belt to release the restraint on the occupant; or, after a head-on collision, the real-time speed of the vehicle is collected, and according to the real-time speed of the vehicle, the corresponding preset time in the pre-stored correspondence table of real-time speed and preset time is retrieved. If the time after the seat belt is ignited is greater than the preset time corresponding to the real-time speed, the processing unit controls the seat belt to release the restraint on the occupant.

3. The vehicle collision protection device according to claim 2, characterized in that: The occupant movement status acquisition unit also includes a vehicle speed meter and a timer. The vehicle speed meter detects the real-time vehicle speed at the time of the collision and transmits the vehicle speed information to the processing unit. The processing unit pre-stores a correspondence table between real-time vehicle speed and preset time. When the processing unit determines that the time elapsed after the seat belt is ignited is greater than the corresponding preset time at the current real-time vehicle speed, the processing unit controls the seat belt to restrict the contact with the occupant.

4. The vehicle collision protection device according to claim 2, characterized in that: The seat belt includes an electromagnetic lock buckle, a lock tongue fixing buckle and a lock tongue guide ring. The electromagnetic lock buckle is arranged on the vehicle body, the seat belt body is passed through the lock tongue guide ring, and the lock tongue fixing buckle is arranged on the lock tongue guide ring. The electromagnetic lock buckle absorbs or releases the lock tongue fixing buckle by whether it is powered on or not. During the tightening process of the seat belt, if the seat belt receives a signal sent by the control unit to release the seat belt restriction, the electromagnetic lock buckle automatically releases the lock tongue fixing buckle.

5. A vehicle, characterized in that: The vehicle adopts the vehicle collision protection method described in claim 1 to control the seat belt.

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