An electric vehicle intelligent control pre-tightening three-point emergency locking safety belt and a pre-tightening method thereof

Abstract

The application relates to the technical field of electric vehicle safety belts, in particular to an electric vehicle intelligent control pre-tightening three-point emergency locking safety belt and a pre-tightening method thereof, which comprises a connector, a winding shaft is built in the connector, and a woven belt is wound on the winding shaft; a pre-tightening structure is connected to the winding shaft, and the pre-tightening structure is used for driving the winding shaft to wind the woven belt; a first locking assembly and a second locking assembly are arranged in the connector, the first locking assembly can lock the winding shaft when a driver or passenger pulls the woven belt, and the second locking assembly can lock the winding shaft when the vehicle suddenly decelerates; and a connecting assembly is arranged in the connector, the connecting assembly can synchronously lock the winding shaft by the first locking assembly and the second locking assembly, thereby improving the operation stability of the safety belt in an emergency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric vehicle safety belts, in particular to an electric vehicle intelligent control pre-tightening three-point emergency locking safety belt and a pre-tightening method thereof. BACKGROUND

[0002] The automobile safety belt is an important guarantee device for the safety of the driver and passenger in the vehicle. It limits the displacement of the driver and passenger in the vehicle in emergency situations such as vehicle collision and sudden braking, buffers the impact force of the body and the structure in the vehicle, and avoids the driver and passenger from suffering serious injuries. It is an effective means to reduce traffic accident casualties and is crucial to improve driving safety.

[0003] In the existing automobile safety belt, two sets of parallel locking structures are usually provided, and the two sets of locking structures can lock the safety belt when the vehicle suddenly decelerates to avoid collision or the driver and passenger quickly pull the safety belt due to inertia, that is, the triggering modes of the two sets of locking structures are different. In an emergency, only one set of locking structures may be triggered, and the impact force generated at the locking moment will directly act on the single set of locking structures. Although the structural strength of each set of locking structures can meet the use under normal circumstances according to the existing execution standard, the above-mentioned impact force will frequently act on the single set of locking structures in the process of long-time running of the automobile, causing damage to the rotating shaft of the locking piece in the locking structure.

[0004] The damaged rotating shaft can be replaced subsequently, but in the case of damage to the rotating shaft of the locking piece, the locking piece may not reset in time due to jamming, so that the safety belt will still be in the locked state after the vehicle collision. Under the current situation that new energy vehicles are becoming more and more popular, when a new energy vehicle collides, the speed of self-ignition and fire is extremely fast. If the locked state of the safety belt cannot be released in time, the safety belt will also bind the driver and passenger, causing the driver and passenger to lose valuable escape time. SUMMARY

[0005] The purpose of the present application is to provide an electric vehicle intelligent control pre-tightening three-point emergency locking safety belt and a pre-tightening method thereof to solve the problems raised in the background.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0007] An electric vehicle intelligent control pre-tightening three-point emergency locking safety belt, comprising:

[0008] A connector, the connector is built-in a winding shaft, and a woven belt is wound on the winding shaft;

[0009] A pre-tightening structure connected to the winding shaft, the pre-tightening structure is used to drive the winding shaft to wind the woven belt;

[0010] A first locking assembly and a second locking assembly are arranged in the connector, the first locking assembly is capable of locking the winding shaft when the occupant pulls the woven belt, and the second locking assembly is capable of locking the winding shaft when the vehicle suddenly decelerates.

[0011] A connecting assembly is arranged in the connector, and the connecting assembly is capable of synchronously locking the winding shaft by the first locking assembly and the second locking assembly.

[0012] As a further scheme of the present application, a first gear and a second gear are rotatably arranged on the connector, the first gear is engaged with the second gear, the first gear is connected with the first locking assembly, and the second gear is connected with the second locking assembly.

[0013] As a further scheme of the present application, the first locking assembly comprises an inner ratchet ring arranged on the connector and a centrifugal deflection structure matched with the inner ratchet ring, the centrifugal deflection structure is capable of forming a locking state between the winding shaft and the inner ratchet ring when the winding shaft rotates.

[0014] As a further scheme of the present application, the centrifugal deflection structure comprises a follower coaxially connected with a rotating shaft of the winding shaft, a groove is formed on the follower, a first lock tongue is rotatably arranged in the groove, and the first lock tongue is matched with an abutting surface arranged on a side wall of the groove.

[0015] As a further scheme of the present application, the second locking assembly comprises an outer ratchet wheel coaxially connected with the second gear and a mounting bracket arranged on the connector, a second lock tongue is rotatably arranged on the mounting bracket, and an end of the second lock tongue away from a rotating shaft of the second lock tongue is matched with the outer ratchet wheel.

[0016] The second locking assembly further comprises a guide arranged in the mounting bracket, a steel ball is rotatably arranged in the guide, and the steel ball is capable of driving the second lock tongue to deflect towards the outer ratchet wheel when moving along a length direction of the guide.

[0017] As a further scheme of the present application, the connecting assembly comprises:

[0018] An elastic torsion structure is arranged in the connector, and the elastic torsion structure is capable of keeping the first locking assembly in a released state of the winding shaft.

[0019] A following structure is connected between the elastic torsion structure and the second locking assembly, and the following structure is capable of driving the first locking assembly to synchronously act when the second locking assembly acts.

[0020] As a further further scheme of the present application: the elastic torsion structure comprises two groups of extension shafts connected with the first locking assembly, and the extension shafts are provided with helical grooves in the axial direction thereof;

[0021] The elastic torsion structure further comprises a support set arranged inside the connector, and a connecting sleeve is connected to the support set and slidably fitted with the extension shafts, and a convex shaft is arranged in the connecting sleeve and slidably fitted with the helical grooves.

[0022] As a further further scheme of the present application: the support set comprises a horizontal shaft mounted on the connector, a connecting rod is slidably mounted on the horizontal shaft, and a coupling shaft is rotatably mounted on the connecting rod and rotatably connected with the connecting sleeve;

[0023] A cylindrical spring is further sleeved on the horizontal shaft, one end of the cylindrical spring is connected with the connecting rod, and the other end is connected with the end portion of the connecting rod.

[0024] As a further further scheme of the present application: the follow-up structure comprises a hinged rod rotatably connected with the connecting rod, a coupling plate is rotatably mounted on the end of the hinged rod away from the connecting rod, a sliding connection portion is arranged on the coupling plate, and the sliding connection portion is slidably connected with a guide portion arranged on the second locking assembly;

[0025] The follow-up structure further comprises a horizontal slot arranged on the coupling plate, and the horizontal slot is slidably fitted with a follow-up shaft connected with the second locking assembly.

[0026] A pre-tightening method of the three-point emergency locking safety belt of the electric vehicle intelligent control pre-tightening, comprising:

[0027] When the vehicle is in an accident, the safety airbag is popped out at the same time, the pre-tightening structure is controlled to act, and the woven belt is tightened, and when the vehicle is rapidly decelerated, the second locking assembly can drive the first locking assembly to act synchronously through the connecting assembly, and at this time, the first locking assembly and the second locking assembly synchronously lock the winding shaft.

[0028] Compared with the prior art, the present application has the following beneficial effects:

[0029] When the vehicle is rapidly decelerated or collides, the impact force generated during the rapid stopping process around the winding shaft can be shared by the rotating shafts of the first locking tongue and the second locking tongue, avoiding the first locking assembly and the second locking assembly working alone to cause the first locking tongue or the second locking tongue to bear excessive impact force and break, and unable to achieve good locking effect. In addition, ensuring the structural integrity of the first locking tongue and the second locking tongue rotating shafts can also reset the first locking tongue and the second locking tongue in time after the unexpected situation is resolved, avoiding the second injury to the driver and passenger caused by the first locking tongue and the second locking tongue rotating shafts being damaged and unable to reset in time, and gaining valuable time for the driver and passenger to escape. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 Structure diagram of an embodiment of a three-point emergency locking safety belt for electric vehicle intelligent control pre-tensioning.

[0031] Figure 2 Structure explosion diagram of a connector in an embodiment of a three-point emergency locking safety belt for electric vehicle intelligent control pre-tensioning.

[0032] Figure 3 Structure explosion diagram of a connector from another angle in an embodiment of a three-point emergency locking safety belt for electric vehicle intelligent control pre-tensioning.

[0033] Figure 4 Structure diagram of a first locking assembly and a second locking assembly in an embodiment of a three-point emergency locking safety belt for electric vehicle intelligent control pre-tensioning.

[0034] Figure 5 Structure diagram of a pre-tensioning structure in an embodiment of a three-point emergency locking safety belt for electric vehicle intelligent control pre-tensioning.

[0035] Figure 6 Structure explosion diagram of a first locking assembly and a second locking assembly in an embodiment of a three-point emergency locking safety belt for electric vehicle intelligent control pre-tensioning.

[0036] Figure 7 Structure diagram of a follower and a first locking tongue in an embodiment of a three-point emergency locking safety belt for electric vehicle intelligent control pre-tensioning.

[0037] Figure 8 Structure diagram of a second locking assembly in an embodiment of a three-point emergency locking safety belt for electric vehicle intelligent control pre-tensioning.

[0038] Figure 9 Sectional view of a second locking assembly in an embodiment of a three-point emergency locking safety belt for electric vehicle intelligent control pre-tensioning.

[0039] Figure 11Structure diagram of connecting assembly in one embodiment of three-point emergency locking safety belt with intelligent control pre-tightening for electric vehicle.

[0040] Figure 10 Structure diagram of connecting assembly in one embodiment of three-point emergency locking safety belt with intelligent control pre-tightening for electric vehicle.

[0041] Figure 12 Structure diagram of connecting assembly in one embodiment of three-point emergency locking safety belt with intelligent control pre-tightening for electric vehicle.

[0042] In the figure: 1, connector; 2, woven belt; 3, buckle; 4, winding shaft; 5, first gear; 6, second gear; 7, follower; 701, abutting surface; 8, first lock tongue; 9, extension shaft; 901, helical groove; 10, inner ratchet ring; 11, outer ratchet wheel; 12, mounting frame; 1201, arc-shaped through slot; 1202, guide part; 13, follower shaft; 14, second lock tongue; 1401, stop part; 15, guide; 16, steel ball; 17, connecting plate; 1701, transverse slot; 1702, sliding connection part; 18, hinged rod; 19, connecting rod; 20, cylindrical spring; 21, cross shaft; 22, connecting shaft; 23, connecting sleeve; 2301, protruding shaft; 24, explosive device; 25, guide rod; 26, toothed plate; 27, third gear. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0044] In addition, the elements in the present application are referred to as "fixed to" or "provided on" another element, which can be directly on another element or can have a middle element. When an element is considered to be "connected" to another element, it can be directly connected to another element or can have a middle element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0045] Please refer to Figures 1-12 In the embodiments of the present application, a three-point emergency locking safety belt with intelligent control pre-tightening for electric vehicle includes: a connector 1, a pre-tightening structure, a first locking assembly, a second locking assembly, and a connecting assembly.

[0046] The connector 1 is internally provided with a winding shaft 4, the woven belt 2 is wound on the winding shaft 4, and the buckle 3 is arranged at one end of the woven belt 2 away from the winding shaft 4;

[0047] The pre-tightening structure connects the winding shaft 4, and is used to drive the winding shaft 4 to wind the woven belt 2, the pre-tightening assembly comprises a third gear 27 coaxially connected with the winding shaft 4 and a guide rod 25 arranged on the connector 1, a toothed plate 26 is slidingly installed on the guide rod 25, and the toothed plate 26 is connected with an explosive device 24 arranged in the connector 1.

[0048] When the vehicle encounters an emergency collision, the collision sensor quickly detects the vehicle collision and the collision strength, and once the monitored impact force exceeds the preset threshold, the sensor activates the airbag control unit to trigger the airbag to pop out, providing critical protection for the limbs of the driver and passenger, effectively reducing the risk of injury; At the same time, the collision sensor also accurately controls the explosive device 24, which drives the toothed plate 26 to move by using a micro explosion, and when the toothed plate 26 moves to mesh with the third gear 27, the third gear 27 drives the winding shaft 4 to rotate, thereby winding the woven belt 2, which can safely bind the driver and passenger to the seat, prevent the driver and passenger from being too close to the vehicle body due to inertia, and avoid the situation that even if the winding shaft 4 is locked, it cannot effectively limit the driver and passenger, and fully guarantee the safety of the driver and passenger in the case of emergency collision.

[0049] Please refer to Figure 4 、 Figure 6 , the first locking assembly and the second locking assembly are arranged in the connector 1, the first locking assembly can lock the winding shaft 4 when the driver and passenger pull the woven belt 2, and the second locking assembly can lock the winding shaft 4 when the vehicle suddenly decelerates, specifically, the first gear 5 and the second gear 6 are rotatably installed on the connector 1, the first gear 5 is engaged with the second gear 6, and the first gear 5 is connected with the first locking assembly, and the second gear 6 is connected with the second locking assembly.

[0050] In the case of an emergency collision, the first gear 5 and the second gear 6 are closely meshed at a transmission ratio of about 1:1, which can ensure that the first locking assembly and the second locking assembly are synchronously and accurately driven when the winding shaft 4 operates, and the first locking assembly and the second locking assembly can simultaneously or separately reliably lock the winding shaft 4 when the vehicle is subjected to a collision. This bidirectional and close connection mechanism can not only provide double protection and ensure that the seat belt tightly binds the driver and the passenger in an instant, but also can flexibly adjust the locking mode according to the actual demand under complex collision conditions. It can minimize the risk of forward movement caused by the loosening or untimely locking of the seat belt, effectively reduce the harm to the driver and the passenger caused by the collision, and comprehensively improve the driving safety, thereby building a solid and reliable safety barrier for the passengers in the vehicle.

[0051] Please refer to Figure 4 、 Figure 6 、 Figure 7 , the first locking assembly comprises an inner ratchet ring 10 mounted on the connector 1 and a centrifugal deflection structure matched with the inner ratchet ring 10, the centrifugal deflection structure can form a locking state between the winding shaft 4 and the inner ratchet ring 10 when the winding shaft 4 rotates, and the centrifugal deflection structure comprises a follower 7 coaxially connected with the rotating shaft of the winding shaft 4, a groove is formed in the follower 7, a first lock tongue 8 is rotatably mounted in the groove, and the first lock tongue 8 is matched with an abutting surface 701 arranged on the side wall of the groove.

[0052] In the initial state, the connecting assembly keeps the first lock tongue 8 away from the abutting surface 701, at this time, if the winding shaft 4 rotates at a speed lower than the predetermined speed of about 100 rpm, the first lock tongue 8 will not be thrown outward due to the centrifugal force, which ensures that the woven belt 2 can be smoothly pulled out when the woven belt 2 is pulled during normal driving. When the vehicle is in a collision, the driver and the passenger are away from the seat due to inertia, and the winding shaft 4 is driven by the woven belt 2 to rotate at a speed higher than the predetermined speed (such as 100 rpm), the first lock tongue 8 is quickly deflected (within about 0.01 seconds) towards the abutting surface 701 under the action of the centrifugal force, and is engaged with the ratchet teeth of the inner ratchet ring 10, thereby achieving the locking of the winding shaft 4, ensuring that the woven belt 2 effectively binds the driver and the passenger, and reducing the risk of injury.

[0053] At the moment of collision, the first lock tongue 8 abuts against the abutting surface 701 and engages the inner ratchet ring 10, at this time, the abutting surface 701 provides support for the first lock tongue 8, disperses about 30% of the impact force, significantly reduces the risk of bending deformation, and guarantees the locking reliability. This design can effectively restrain the driver and the passenger in an emergency, and in cooperation with the airbag, it is expected to reduce the injury probability by about 40%-60% and improve the driving safety.

[0054] Please refer to Figure 4 、 Figure 6 、 Figure 8 、 Figure 9The second locking assembly comprises an outer ratchet wheel 11 coaxially connected with the second gear 6 and a mounting frame 12 arranged on the connector 1, a second lock tongue 14 is rotatably arranged on the mounting frame 12, and the end of the second lock tongue 14 away from the rotation shaft is matched with the outer ratchet wheel 11; and a stop portion 1401 is further arranged on the second lock tongue 14.

[0055] The second locking assembly further comprises a guide 15 arranged in the mounting frame 12, and a steel ball 16 is arranged in the guide 15 to roll; when the steel ball 16 moves along the length direction of the guide 15, the steel ball 16 can drive the second lock tongue 14 to deflect towards the outer ratchet wheel 11.

[0056] Similarly, in the initial state, the connecting assembly makes the second lock tongue 14 away from the outer ratchet wheel 11, so that the second lock tongue 14 does not interfere with the outer ratchet wheel 11 when the winding shaft 4 rotates, thereby ensuring that the woven belt 2 can be smoothly pulled out during normal driving, and when the vehicle rapidly decelerates to avoid collision without avoiding, the steel ball 16 can move along the length direction of the guide 15 by using its own inertia during rapid deceleration, and act on the second lock tongue 14 to make the second lock tongue 14 deflect downward, thereby locking the outer ratchet wheel 11; at this time, the outer ratchet wheel 11 locks the winding shaft 4 through the first gear 5 and the second gear 6, thereby locking the winding shaft 4 during rapid deceleration, and ensuring that the woven belt 2 effectively binds the limbs of the driver and passenger.

[0057] Through the above arrangement, the first lock tongue 8 and the inner ratchet ring 10, and the second lock tongue 14 and the outer ratchet wheel 11 jointly act on the winding shaft 4 to realize a double locking mechanism, which can provide reliable protection before and during an accident, and ensure the normal use of the safety belt during normal driving; in an emergency, the winding shaft 4 is quickly and reliably locked to ensure that the safety belt can effectively bind the driver and passenger, thereby reducing the harm caused by inertia forward movement, and the double protection mechanism significantly improves the safety of the vehicle and provides more comprehensive and reliable protection for the driver and passenger.

[0058] Please refer to Figure 2 , Figures 10-12 The connecting assembly is arranged in the connector 1, and the connecting assembly can synchronously lock the winding shaft 4 by the first locking assembly and the second locking assembly.

[0059] The connecting assembly comprises an elastic torsion structure and a follow-up structure.

[0060] The elastic torsion structure is arranged in the connector 1, and the elastic torsion structure can keep the first locking assembly in a released state of the winding shaft 4.

[0061] The elastic torsion structure comprises two groups of extension shafts 9 connected with the first locking assembly, the extension shafts 9 are provided with helical grooves 901 along the axial direction thereof, in particular, the extension shafts 9 are connected with the first locking tongue 8, and the extension shafts 9 are coaxial with the rotation shaft of the first locking tongue 8;

[0062] The elastic torsion structure further comprises a support set arranged inside the connector 1, the support set is connected with a connecting sleeve 23 which is sleeved with the extension shafts 9, and the connecting sleeve 23 is provided with convex shafts 2301 which are sleeved with the helical grooves 901.

[0063] In the initial state, the support set can provide a stable force for the connecting sleeve 23 to move towards the direction of the follower 7, and the convex shafts 2301 are accurately located at one end of the helical grooves 901 close to the follower 7 under the action of the force, in this state, the first locking tongue 8 can be kept away from the abutting surface 701, so that when the woven belt 2 is pulled during normal use, the first locking tongue 8 will not be deflected to fit the abutting surface 701 due to slight shaking or vibration, avoiding accidental engagement with the inner ratchet ring 10, and ensuring the normal use of the safety belt and the comfort of the driver and passenger.

[0064] However, when the driver quickly pulls the woven belt 2 due to an emergency, causing the winding shaft 4 to rotate at a speed exceeding the predetermined rotation speed, the first locking tongue 8 will be subjected to a large centrifugal force, and under the action of the centrifugal force, the first locking tongue 8 can quickly and stably deflect relative to the follower 7. With the progress of this process, the extension shafts 9 will follow the movement of the first locking tongue 8 and rotate accordingly, so that the convex shafts 2301 can smoothly move away from the follower 7 along the helical grooves 901, which ensures that the first locking tongue 8 can accurately and firmly engage with the inner ratchet ring 10, thereby achieving reliable locking of the winding shaft 4 and ensuring that the woven belt 2 can effectively restrain the driver in an emergency, providing necessary protection.

[0065] At the same time, the support set stores elastic potential energy during this process, which will prompt the first locking tongue 8 to reset in time when the accident is over, at this time, the woven belt 2 can be appropriately loosened under the driving of external force, thereby avoiding the situation that the woven belt 2 still excessively restrains the driver after the vehicle collision, which not only protects the safety of the driver at the moment of collision, but also avoids subsequent secondary injuries caused by excessive restraint, such as limb blood circulation obstruction, vehicle fire burning causing the driver to be burned, etc., greatly improving the driving safety, and this design ensures the effectiveness and reliability of the safety belt system in various situations through delicate mechanical interaction and energy management, providing all-round protection for the driver.

[0066] The support set comprises a horizontal shaft 21 mounted on the connector 1, a connecting rod 19 slidingly mounted on the horizontal shaft 21, a connecting shaft 22 rotatably mounted on the connecting rod 19, and a connecting sleeve 23 rotatably connected with the connecting shaft 22. Through the above arrangement, when the follower 7 rotates, it can drive the first lock bolt 8 to move, and the connecting sleeve 23 can rotate relative to the connecting shaft 22 while following the rotation of the extension shaft 9. This arrangement can ensure the stability of the connection between the connecting sleeve 23 and the extension shaft 9, and can also drive the first lock bolt 8 to move through the connecting sleeve 23 when the connecting shaft 22 moves, thereby ensuring the stability of the movement of the first lock bolt 8.

[0067] The horizontal shaft 21 is further sleeved with a cylindrical spring 20, one end of the cylindrical spring 20 is connected with the connecting rod 19, and the other end is connected with the end of the connecting rod 19.

[0068] The follower structure is connected with the elastic torsion structure and the second locking assembly, and can drive the first locking assembly to move synchronously when the second locking assembly moves.

[0069] The follower structure comprises a hinged rod 18 rotatably connected with the connecting rod 19, a connecting plate 17 rotatably mounted on one end of the hinged rod 18 away from the connecting rod 19, and a sliding connection part 1702 provided on the connecting plate 17 and slidingly connected with a guide part 1202 provided on the second locking assembly. Specifically, one end of the second lock bolt 14 away from the rotation shaft is connected with a follower shaft 13, and the follower shaft 13 can move in an arc-shaped through slot 1201 formed in the mounting frame 12.

[0070] The follower structure further comprises a transverse groove 1701 provided on the connecting plate 17 and slidingly matched with the follower shaft 13 connected with the second locking assembly.

[0071] In this embodiment, initially, the cylindrical spring 20 is in a moderate compression state, ready to move, and gives the connecting rod 19 a tendency to move towards the follower 7. This key arrangement brings double advantages: first, through precise control, the convex shaft 2301 is stably stopped at one end of the spiral groove 901 close to the follower 7, which lays a solid foundation for the stability of the first lock bolt 8 during daily driving and ensures that it is not disturbed by slight vibration, thereby ensuring driving comfort; second, through the ingenious linkage of the hinged rod 18, the connecting plate 17 and the follower shaft 13, the second lock bolt 14 is ingeniously separated from the outer ratchet wheel 11, and a "safe distance" is maintained between them in the initial state. In this way, a single cylindrical spring 20 ingeniously shoulders the responsibility of coordinated control of the first locking assembly and the second locking assembly, simplifies the system architecture, improves response efficiency, and injects solid protection into the safety performance of the vehicle.

[0072] When the vehicle is rapidly decelerated, the second locking tongue 14 can be deflected towards the outer ratchet 11 under the drive of the steel ball 16, at this time the second locking tongue 14 can produce a locking effect on the outer ratchet 11, so that the winding shaft 4 can be locked, and when the second locking tongue 14 is deflected towards the outer ratchet 11, the connecting shaft 13 connected thereto will also make a circular motion, so that the connecting plate 17 can slide downward, at this time the connecting plate 17 drives the connecting rod 19 to move away from the follower 7 through the hinged rod 18, in this process, the connecting rod 19 drives the first locking tongue 8 to move through the shaft coupling 22, the connecting sleeve 23, the convex shaft 2301, the extension shaft 9, and the spiral groove 901, so that in the above emergency, the synchronous action of the first locking assembly and the second locking assembly can be realized, so that the impact force generated during the rapid stop of the winding shaft 4 can be shared by the shafts of the first locking tongue 8 and the second locking tongue 14, avoiding the situation that the first locking assembly and the second locking assembly work alone, causing the first locking tongue 8 or the second locking tongue 14 to bear excessive impact force and break, and thus cannot achieve good locking effect. In addition, ensuring the structural integrity of the shafts of the first locking tongue 8 and the second locking tongue 14 can also reset the first locking tongue 8 and the second locking tongue 14 in time after the unexpected situation is resolved, avoiding the situation that the first locking tongue 8 and the second locking tongue 14 cannot be reset in time due to damage to the shafts, causing the passengers to be injured again.

[0073] Of course, when the vehicle is in a collision and the passengers quickly pull the woven belt 2, the first locking tongue 8 will also be deflected under the action of centrifugal force and cooperate with the inner ratchet ring 10 to achieve locking of the winding shaft 4. Similarly, in this process, the connecting rod 19 will move, thereby driving the second locking tongue 14 to move, so that the second locking tongue 14 can also lock the outer ratchet 11, thereby achieving a double locking effect to ensure the structural integrity of the shafts of the first locking tongue 8 and the second locking tongue 14.

[0074] Based on the above settings, in the event of rapid deceleration or collision of the vehicle, the impact force generated during the rapid stop of the winding shaft 4 can be shared by the shafts of the first locking tongue 8 and the second locking tongue 14, avoiding the situation that the first locking assembly and the second locking assembly work alone, causing the first locking tongue 8 or the second locking tongue 14 to bear excessive impact force and break, and thus cannot achieve good locking effect. In addition, ensuring the structural integrity of the shafts of the first locking tongue 8 and the second locking tongue 14 can also reset the first locking tongue 8 and the second locking tongue 14 in time after the unexpected situation is resolved, avoiding the situation that the first locking tongue 8 and the second locking tongue 14 cannot be reset in time due to damage to the shafts, causing the passengers to be injured again.

[0075] As an embodiment of the present application, a pre-tightening method of the three-point emergency locking safety belt of the electric vehicle intelligent control pre-tightening is also proposed, comprising: when the vehicle has an accident, the pre-tightening structure is controlled to act at the same time as the airbag is ejected, and the woven belt 2 is tightened, and when the vehicle is rapidly decelerated, the second locking assembly can drive the first locking assembly to act synchronously through the connecting assembly, at this time, the first locking assembly and the second locking assembly are synchronously locked to the winding shaft 4.

[0076] It is apparent to a person skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all aspects as illustrative and not restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended to include all changes falling within the meaning and range of equivalents of the claims. Any reference signs in the claims should not be considered as limiting the claims involved.

[0077] Furthermore, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and a person skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by a person skilled in the art.

Claims

1. A three-point emergency locking safety belt with intelligent control pre-tightening for electric vehicles, comprising: a connector (1) with a winding shaft (4) built-in, and a woven belt (2) wound on the winding shaft (4); a pre-tightening structure connected to the winding shaft (4) for driving the winding shaft (4) to wind the woven belt (2); a first locking assembly and a second locking assembly, both arranged in the connector (1), the first locking assembly being capable of locking the winding shaft (4) when a passenger pulls the woven belt (2), and the second locking assembly being capable of locking the winding shaft (4) when the vehicle suddenly decelerates; characterized in that it further comprises: a connecting assembly arranged in the connector (1), the connecting assembly being capable of synchronously locking the winding shaft (4) by the first locking assembly and the second locking assembly; a first gear (5) and a second gear (6) rotatably mounted on the connector (1), the first gear (5) and the second gear (6) being engaged, and the first gear (5) being connected to the first locking assembly, and the second gear (6) being connected to the second locking assembly; the first locking assembly comprising an inner ratchet ring (10) mounted on the connector (1) and a centrifugal deflection structure matched with the inner ratchet ring (10), the centrifugal deflection structure being capable of forming a locking state between the winding shaft (4) and the inner ratchet ring (10) when the winding shaft (4) rotates; the centrifugal deflection structure comprising a follower (7) coaxially connected with the rotating shaft of the winding shaft (4), the follower (7) having a groove formed thereon, and a first lock tongue (8) rotatably mounted in the groove, the first lock tongue (8) being matched with an abutting surface (701) arranged on the side wall of the groove.

2. An electric vehicle intelligent control pre-tightening three-point emergency locking safety belt according to claim 1, characterized in that, the second locking assembly comprising an outer ratchet wheel (11) coaxially connected with the second gear (6) and a mounting bracket (12) arranged on the connector (1), the mounting bracket (12) having a second lock tongue (14) rotatably mounted thereon, the second lock tongue (14) being matched with the outer ratchet wheel (11) at the end away from the rotating shaft thereof; the second locking assembly further comprising a guide (15) arranged in the mounting bracket (12), and a steel ball (16) rollingly arranged in the guide (15), the steel ball (16) being capable of driving the second lock tongue (14) to deflect towards the outer ratchet wheel (11) when moving along the length direction of the guide (15).

3. The smart control pre-tightened three-point emergency locking safety belt for electric vehicle of claim 1, wherein, the connecting assembly comprising: a resilient torsion structure arranged in the connector (1), the resilient torsion structure being capable of keeping the first locking assembly in a released state for the winding shaft (4); a follower structure connected to the resilient torsion structure and the second locking assembly, the follower structure being capable of driving the first locking assembly to synchronously act when the second locking assembly acts.

4. The smart control pre-tightened three-point emergency locking safety belt of electric vehicle of claim 3, wherein, the resilient torsion structure comprising two groups of extension shafts (9) connected to the first locking assembly, the extension shafts (9) being provided with helical grooves (901) in the axial direction thereof. The elastic torsion structure further comprises a supporting set arranged inside the connector (1), a connecting sleeve (23) slidingly sleeved with the extension shaft (9) is connected to the supporting set, and a convex shaft (2301) slidingly matched with the spiral groove (901) is arranged in the connecting sleeve (23).

5. An electrically motorized smart control pre-tensioned three-point emergency locking safety belt for electric vehicles as claimed in claim 4 wherein, The supporting set comprises a horizontal shaft (21) mounted on the connector (1), a connecting rod (19) slidingly mounted on the horizontal shaft (21), and a shaft sleeve (22) rotatably mounted on the connecting rod (19) and rotatably connected with the connecting sleeve (23). A cylindrical spring (20) is further sleeved on the horizontal shaft (21), one end of the cylindrical spring (20) is connected with the connecting rod (19), and the other end is connected with the end of the connecting rod (19).

6. An electric vehicle intelligent control pre-tightened three-point emergency locking safety belt according to claim 5, characterized in that, The follow-up structure comprises a hinged rod (18) rotatably connected with the connecting rod (19), a connecting plate (17) rotatably mounted on the end of the hinged rod (18) away from the connecting rod (19), a sliding connection part (1702) arranged on the connecting plate (17) and slidingly connected with a guide part (1202) arranged on the second locking assembly. The follow-up structure further comprises a transversely arranged groove (1701) arranged on the connecting plate (17) and slidingly matched with a follow-up shaft (13) connected with the second locking assembly.

7. A method of pre-tensioning a three-point emergency locking seat belt of an electric vehicle with intelligent control pre-tensioning according to any one of claims 1 to 6, characterized in that, Comprise: When the vehicle is in an accident, the pretightening structure is controlled to act at the same time as the airbag is ejected, and the woven belt (2) is tightened, and when the vehicle is rapidly decelerated, the second locking assembly can drive the first locking assembly to act synchronously through the connecting assembly, at this time, the first locking assembly and the second locking assembly synchronously lock the winding shaft (4).

Images