A seat transverse safety belt based occupant protection method and an application device thereof

Abstract

The present application relates to a kind of passenger protection method and application device based on seat transverse safety belt, device includes safety belt left, right shoulder strap and right side chest band;After normal binding safety belt, safety belt right shoulder strap exerts a x negative force on human body, the tendency of human forward inclination is restrained, the human body movement posture is corrected, safety belt right side chest band exerts a y negative force on human body, the tendency of human lateral inclination is restrained, under the joint action of three safety belts, the passenger who occurs movement is movement posture, and secondary impact area adjustment, so that the passenger tends to the protection area designed.When non-normal angle impact occurs, located in safety belt right shoulder strap can provide sufficient restraint, change the final dumping destination of passenger to the protection area designed by vehicle.When normal angle side impact occurs, the safety belt under right side rib generates lateral restraint to passenger, ensure that before passenger inclines to the passenger space on the other side, central air bag is deployed, to provide flexible protection for passenger.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of automobiles, and particularly relates to a passenger protection method based on a seat transverse safety belt and an application device thereof. BACKGROUND

[0002] With the development of the times, the road conditions of vehicles are more and more complex, resulting in an increasing number of accident types, and higher requirements for the protection of passengers. The conventional three-point safety belt is attached to the left shoulder of the body trunk and the chest and abdomen, and can only provide good restraint effect when a frontal impact occurs. When a side impact occurs, the passengers in the vehicle will move transversely in the y direction along with the vehicle. At this time, the safety belt cannot provide sufficient restraint, and the passenger's trunk will drill out of the right side gap of the safety belt and easily intrude into the space of the other passenger. During this movement process, the passengers often collide with each other in the upper trunk, causing secondary injury, and the passengers' abdomen and instrument panel collide violently, causing great damage to the lower ribs of the chest and the upper ribs of the abdomen.

[0003] At present, the conventional protection measures are to modify the structure of the instrument panel or add a safety airbag at the central passage. Both of them reduce human body injury by adding flexible buffering, but in actual side impact accidents, the human body is close to the instrument panel at a very fast speed. The measure of adding a safety airbag at the central passage cannot extend the airbag to the gap between the passenger and the instrument panel in time, and the protection effect is poor. Moreover, the vehicle may not simply undergo a right-angle side impact. Different impact angles will cause the movement trajectory of the passenger to be uncertain, and the contact area between the passenger and the automobile interior may exceed the set protection range.

[0004] In summary, when the vehicle is subjected to a side impact, the vehicle moves transversely, and the passengers in the vehicle move along with it. The upper trunk of the passenger on the driver's side intrudes into the space on the co-driver's side. If there are two passengers in the front row of the vehicle, mutual collision between the passengers may occur, causing secondary injury. If there is only one passenger, the driver, in the vehicle, a violent collision will occur between the driver and the center console, causing great damage. When the vehicle is subjected to a side impact at an abnormal angle, the passenger will not simply undergo a side impact, and may move in the right front direction. At this time, the impact area of the passenger's trunk may be located in the middle of the instrument panel or the front of the instrument panel. At this time, the conventional far-end protection measures, such as the central airbag and the crushable instrument panel, cannot effectively protect the passengers under such working conditions due to the limitation of the protection area. SUMMARY

[0005] The purpose of the present application is to provide a passenger protection method based on a seat transverse safety belt and an application device thereof, to solve the problem that the conventional far-end protection measures cannot comprehensively protect the safety of passengers in the vehicle when the vehicle is subjected to a side impact.

[0006] The object of the present application is achieved by the following technical solutions:

[0007] An occupant protection method based on seat transverse safety belt, comprising the following steps:

[0008] A. A safety belt right shoulder strap 2 is installed near the contact position of the right shoulder of the human body and the seat 7, with a safety belt right side abdominal strap side airbag 5 attached thereto. A safety belt right side chest strap 4 is installed near the contact position of the right side rib of the human body and the seat 7. The top ends of the safety belt right shoulder strap 2 and the safety belt right side chest strap 4 are connected to the inside of the seat 7 through a retractor;

[0009] B. The safety belt right shoulder strap 2 and the safety belt right side chest strap 4 are inserted into the safety belt chest front lock buckle 12 in front of the chest. The safety belt chest front lock buckle total 3 is worn on the safety belt left shoulder strap 1, and the position of the lock buckle can be freely adjusted. When located in a comfortable position, the safety belt chest front lock buckle total 3 is buckled, so that the safety belt chest front lock buckle tooth 13 is bitten into the webbing of the safety belt left shoulder strap 1, and is locked and fixed;

[0010] C. When the vehicle encounters a side impact, the upper torso of the occupant will move and intrude in the xy direction. At this time, the ACU is ignited, the air pump generates gas, the safety belt right side chest airbag 5 is detonated, forming a flexible buffer space of 30*30cm and a thickness of 5cm. At the same time, under the tendency of the human body to fall, the three safety belt absorption parts are stretched against resistance to absorb part of the impact energy of the human body, improve the protection effect of the human body, and change the tendency of the human body to fall, so as to tend to the protection area designed by the automobile, avoid the hard release of the chest rib and the surface of the auxiliary instrument panel, and greatly reduce the injury of the occupant.

[0011] An application device of an occupant protection method based on seat transverse safety belt, comprising a safety belt left shoulder strap 1, a safety belt right shoulder strap 2 and a safety belt right side chest strap 4;

[0012] The safety belt right shoulder strap 2 and the safety belt right side chest strap 4 are installed on the seat 7, and the top ends of the safety belt right shoulder strap 2 and the safety belt right side chest strap 4 are connected to the inside of the seat 7 through a retractor. The safety belt right shoulder strap 2 is located near the contact position of the right shoulder of the human body and the seat 7, with a safety belt right side abdominal strap side airbag 5 attached thereto. The lock buckle end of the safety belt right shoulder strap 2 is inserted into the seat 7 seat cushion side through the safety belt right lower lock buckle 6. The safety belt right side chest strap 4 is located near the contact position of the right side rib of the human body and the seat 7. The lock buckle end of the safety belt right side chest strap is inserted into the seat 7 backrest side;

[0013] After the normal binding of the safety belt, the safety belt right shoulder strap 2 exerts an x negative force on the human body, restraining the tendency of the human body to lean forward, correcting the human body movement posture, and the safety belt right side chest strap 4 exerts a y negative force on the human body, restraining the tendency of the human body to lean sideways, under the combined action of the safety belt right shoulder strap 2, the safety belt right side chest strap 4 and the safety belt left shoulder strap 1, the passenger in motion is adjusted in movement posture and the secondary collision area, so that the passenger tends to be in the designed protection area.

[0014] Further, the safety belt right side chest strap 4 is attached with a safety belt right side abdominal strap side air bag 5, which is arranged at a distance of 20-40 cm from the safety belt right side chest strap buckle end 20.

[0015] Further, when the vehicle encounters a side impact, the upper torso of the passenger will move laterally and intrude in the xy direction, at this time the ACU ignites, the air pump generates gas, and the safety belt right side chest air bag 5 explodes, forming a flexible buffer space of 30*30 cm and a thickness of 5 cm.

[0016] Further, when the vehicle is not in collision, the safety belt right shoulder strap 2 and the safety belt right side chest strap 4 are inserted into the safety belt chest buckle 12 in front of the chest, and the safety belt chest buckle total 3 is worn on the safety belt left shoulder strap 1, which can freely adjust the buckle position, when it is in a comfortable position, the safety belt chest buckle total 3 is buckled, so that the safety belt chest buckle tooth 13 bites into the webbing of the safety belt left shoulder strap 1, and is locked and fixed.

[0017] Further, the safety belt chest buckle 12 is a slidable buckle that can be locked after sliding to a comfortable position.

[0018] Further, the safety belt chest buckle 3 is provided with a safety belt chest buckle pin shaft 11, which can give the safety belt chest buckle a rotational freedom, improving the convenience of wearing the safety belt.

[0019] Further, it also includes a safety air bag inflation pipeline 8, which is a flexible pipeline located inside the safety belt webbing and connected to the air bag inflation port, used for inflating the air bag when the air bag ignites.

[0020] Further, it also includes a safety air bag and safety belt bonding area 9, which is inside the safety belt webbing and the contact area between the air bag and the safety belt, used to ensure that the air bag is constrained on the safety belt when it is ejected, and to ensure that the air bag has a protective effect on the fixed area of the human body.

[0021] Further, it also includes a safety air bag deployment weakening line 10, which is located on the surface of the webbing in the storage area of the safety air bag, which can easily tear the weakening line when the air bag is deployed, ensuring that the air bag is deployed in the correct position.

[0022] Compared with the prior art, the present application has the following advantages:

[0023] 1、The present application adopts close-to-body protection, and is a non-conventional form safety belt with air bags, two safety belts are arranged on the seat, the first one is located near the contact position of the right shoulder of the human body and the seat, and the second one is located near the contact position of the right side rib of the human body and the seat, and a slidable lock is installed on the shoulder strap of the three-point safety belt, which can be locked after being slid to a comfortable position.

[0024] 2、The structure of the present application can further improve the restraint effect on the passenger. When abnormal angle impact occurs, the passenger falls to the right front, and the safety belt located at the right shoulder can provide sufficient restraint to change the final falling destination of the passenger to the protection area designed by the vehicle. When normal angle side impact occurs, the safety belt located under the right rib can produce lateral restraint on the passenger, ensure that the central air bag can normally expand before the passenger falls into the passenger space on the other side, and the air bag provided by the safety belt under the right rib can provide a layer of flexible protection for the passenger when the passenger contacts the auxiliary instrument panel, better reducing the compression amount of the chest of the passenger, and providing sufficient protection for the passenger. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope, and other related drawings can also be obtained by those skilled in the art without creative labor on the premise of not paying creative labor.

[0026] Figure 1 is a side view of the air bag in a non-deployed state;

[0027] Figure 2 is a front view of the air bag in a non-deployed state;

[0028] Figure 3 is a side view of the air bag in a deployed state;

[0029] Figure 4 is a front view of the air bag in a deployed state;

[0030] Figure 5 is a folding mode of the air bag;

[0031] Figure 6 is a front view of the chest lock;

[0032] Figure 7 is a side view of the chest lock;

[0033] Figure 8 is a front chest buckle isometric view;

[0034] Figure 9 safety airbag inflation pipeline and safety airbag and safety belt adhesion area schematic diagram;

[0035] Figure 10 safety airbag deployment weakening line schematic diagram.

[0036] In the figure, 1. safety belt left shoulder strap 2. safety belt right shoulder strap 3. safety belt front chest buckle total 4. safety belt right side chest strap 5. safety belt right side abdominal strap side airbag 6. safety belt right lower buckle 7. seat 8. safety airbag inflation pipeline 9. safety airbag and safety belt adhesion area 10. safety airbag deployment weakening line 11. safety belt front chest buckle pin shaft 12. safety belt front chest buckle 13. safety belt front chest buckle cog. DETAILED DESCRIPTION

[0037] The application is further described below in conjunction with examples:

[0038] The application is further described below in conjunction with examples:

[0039] It should be noted that similar reference numerals and letters refer to like items in the following drawings, and therefore, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings. Also, in the description of the application, the terms "first", "second", and the like are used only to distinguish descriptions, and cannot be understood as indicating or implying relative importance.

[0040] The application is based on a passenger protection method of seat transverse safety belt, comprising the following steps:

[0041] 1. A safety belt right shoulder strap 2 is installed near the contact position of the human right shoulder and the seat 7, and a safety belt right side abdominal strap side airbag 5 is attached thereto. A safety belt right side chest strap 4 is installed near the contact position of the human right side rib and the seat 7. The top ends of the safety belt right shoulder strap 2 and the safety belt right side chest strap 4 are connected to the inside of the seat 7 through a retractor;

[0042] 2. The safety belt right shoulder strap 2 and the safety belt right side chest strap 4 are inserted into the safety belt front chest buckle 12 in front of the chest. The safety belt front chest buckle total 3 is worn on the safety belt left shoulder strap 1, and the buckle position can be freely adjusted. When the buckle is in a comfortable position, the safety belt front chest buckle cog 13 is buckled into the webbing of the safety belt left shoulder strap 1 through the buckling of the safety belt front chest buckle total 3, and is locked and fixed.

[0043] 3. When the vehicle encounters side impact, the upper torso of the occupant will move and intrude along the xy direction, at this time the ACU ignites, the gas pump produces gas, the right chest airbag 5 of the safety belt explodes, forming a flexible buffer space of 30*30cm and 5cm in thickness, at the same time, the anti-resistance lengthens three safety belts to absorb part of the impact energy of the human body, improves the protection effect of the human body, changes the tendency of the human body to fall, makes it tend to the protection area designed by the automobile, avoids the hard release of the ribs and the surface of the auxiliary instrument panel, and greatly reduces the injury of the occupant.

[0044] The application device of the occupant protection method based on the seat transverse safety belt comprises a safety belt left shoulder strap 1, a safety belt right shoulder strap 2, a safety belt chest front buckle total 3, a safety belt right side chest strap 4, a safety belt right side abdominal strap side airbag 5, a safety belt right lower buckle 6, a seat 7, a safety airbag inflation pipeline 8, a safety airbag and safety belt bonding area 9, a safety airbag unfolding weakening line 10, a safety belt chest front buckle pin shaft 11, a safety belt chest front buckle 12 and a safety belt chest front buckle engagement tooth 13.

[0045] The safety belt right shoulder strap 2 and the safety belt right side chest strap 4 are installed on the seat 7, and the top ends of the safety belt right shoulder strap 2 and the safety belt right side chest strap 4 are connected to the inside of the seat 7 through a retractor. The safety belt right shoulder strap 2 is located near the contact position of the right shoulder of the human body and the seat 7, and the safety belt right side abdominal strap side airbag 5 is attached to the safety belt right shoulder strap 2, and the buckle end of the safety belt right shoulder strap 2 is inserted into the seat 7 seat cushion side fixed through the safety belt right lower buckle 6.

[0046] The safety belt right side chest strap 4 is located near the contact position of the right side rib of the human body and the seat 7, and the buckle end of the safety belt right side chest strap is inserted into the seat 7 backrest side fixed.

[0047] After normal binding of the safety belt, the safety belt right shoulder strap 2 exerts an x negative force on the human body to constrain the tendency of the human body to lean forward, correct the motion posture of the human body, and the safety belt right side chest strap 4 exerts a y negative force on the human body to constrain the tendency of the human body to lean sideways, under the combined action of the safety belt right shoulder strap 2, the safety belt right side chest strap 4 and the safety belt left shoulder strap 1, the motion posture of the occupant who moves and the adjustment of the secondary collision area are adjusted, so that the occupant tends to the designed protection area.

[0048] The safety belt right side chest band 4 is attached with a safety belt right side abdominal band side air bag 5, which is arranged at a distance of 20-40 cm from the safety belt right side chest band lock end 20. When the vehicle encounters a side impact, the upper torso of the occupant will move laterally and intrude along the xy direction. At this time, the ACU is ignited, the air pump generates gas, the safety belt right side chest air bag 5 is ignited, a flexible buffer space of 30*30 cm and 5 cm in thickness is formed, which prevents the occupant from directly contacting the right side instrument panel during the right leaning process, avoids the occupant's chest from being greatly compressed, and effectively protects the occupant's personal safety.

[0049] When the vehicle is not impacted, the safety belt right shoulder band 2 and the safety belt right side chest band 4 are inserted into the safety belt chest lock 12 in front of the chest, the safety belt chest lock total 3 is worn on the safety belt left shoulder band 1, and the lock position can be freely adjusted. When it is in a comfortable position, the safety belt chest lock total 3 is buckled to make the safety belt chest lock tooth 13 bite into the webbing of the safety belt left shoulder band 1, and it is locked and fixed.

[0050] A slidable lock is installed on the shoulder band of the three-point safety belt, which can be locked after sliding to a comfortable position.

[0051] When an abnormal angle impact occurs, the occupant leans to the right front, and the safety belt right shoulder band 2 at the right shoulder can provide sufficient restraint to change the final leaning destination of the occupant to the protection area designed by the vehicle. When a normal angle side impact occurs, the safety belt right side chest band 4 under the right side rib can laterally restrain the occupant, ensure that the central air bag can normally deploy before the occupant leans into the other side of the occupant space, and the safety belt right side abdominal band side air bag 5 of the safety belt right side chest band under the right side rib can provide a layer of flexible protection for the occupant when the occupant contacts the instrument panel, better reducing the compression amount of the occupant's chest, and providing sufficient protection for the occupant.

[0052] The safety air bag inflation pipe 8 is a flexible pipe located inside the safety belt webbing, which leads to the air bag inflation port and is used to inflate the air bag when the safety air bag is ignited.

[0053] The safety air bag and safety belt bonding area 9 is inside the safety belt webbing, which is the contact area between the air bag and the safety belt, to ensure that the air bag is restrained on the safety belt when the safety air bag is ejected, and to ensure that the air bag has a protection effect on the fixed area of the human body.

[0054] The safety air bag deployment weakening line 10 is located on the surface of the webbing in the storage area of the safety air bag, which facilitates tearing the weakening line when the air bag is deployed, and ensures that the air bag deployment posture is correct.

[0055] The safety belt chest lock pin shaft 11 is located in the safety belt chest lock 3, which gives the safety belt chest lock a degree of freedom of rotation, and improves the convenience of wearing the safety belt.

[0056] Embodiment 1

[0057] When the vehicle is hit from the side, the vehicle moves laterally along the y direction or side-front direction in the xy direction, and the ACU is triggered. When such vehicle movement occurs, the occupant in the vehicle moves irregularly, and the tendency of movement is to fall to the right or to fall to the front right. After the normal bundling of the safety belt, the safety belt right shoulder strap 2 exerts an x negative force on the human body, and the tendency of the human body to fall to the front is restrained, the posture of the human body is corrected, and the safety belt right chest strap 4 exerts a y negative force on the human body, and the tendency of the human body to fall to the side is restrained. Under the joint action of the two safety belts combined with the safety belt left shoulder strap 1, the posture of the moving occupant and the adjustment of the secondary collision area are adjusted, so that the occupant tends to be in the designed protection area. Since the right shoulder strap and the safety belt right chest strap are connected to the inside of the seat through the retractor, during the movement of the occupant, a total of three force limiting devices, namely the safety belt left shoulder strap 1, the safety belt right shoulder strap 2 and the safety belt right chest strap 4, help the human body to share the impact energy, and the impact energy borne by the occupant is greatly reduced, thereby improving the safety of the occupant.

[0058] At the same time, the safety belt right abdominal strap side airbag 5 attached to the safety belt right chest strap 4 under the ribs of the occupant is triggered (the safety belt right abdominal strap side airbag 5 is arranged at a distance of 20-40 cm from the safety belt right chest strap lock end) to expand outside the safety belt to form a flexible buffer area with an area of 30*30 cm and a thickness of about 5 cm, preventing the occupant from directly contacting the right side instrument panel during the right leaning process, avoiding the chest of the occupant from being greatly pressed, and effectively protecting the safety of the occupant.

[0059] When the vehicle is not hit, the safety belt right shoulder strap 2 and the safety belt right chest strap 4 are inserted into the safety belt chest lock 12 in front of the chest, and the safety belt chest lock total 3 is worn on the safety belt left shoulder strap 1, and the lock position can be freely adjusted. When it is in a comfortable position, the safety belt chest lock total 3 is buckled to make the safety belt chest lock engaging teeth 13 bite into the webbing of the safety belt left shoulder strap 1, and be locked and fixed.

[0060] When the safety belt is not buckled, it is retracted into the seat 7 through the retractor installed in the seat back.

[0061] Device working situation: when the vehicle is subjected to side impact, the upper torso of the occupant will move and intrude laterally along the xy direction, at this time the ACU is ignited, the gas pump produces gas, the right chest airbag 5 of the safety belt is 5cm thick and forms a 30*30cm flexible buffer space. At the same time, under the tendency of the body to fall, the anti-resistance lengthens the right chest strap 4 of the safety belt, the right shoulder strap 2 of the safety belt, and the left shoulder strap 1 of the safety belt. Three safety belts absorb part of the impact energy of the human body, improve the protection effect of the human body, and change the tendency of the human body to fall, so that it tends to the protection area designed by the automobile, such as the central airbag deployment area. Finally, the human body will probably contact the auxiliary instrument panel, but due to the existence of the 30*30cm flexible buffer space carried by the right chest strap of the safety belt, the hard release of the ribs and the surface of the auxiliary instrument panel can be avoided, and the injury of the occupant can be greatly reduced.

[0062] It should be noted that the above only describes the preferred embodiments of the present application and the technical principles applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and those skilled in the art can make various obvious changes, readjustments and substitutions without departing from the scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. A passenger protection method based on a seat transverse safety belt, characterized by, It comprises the following steps: A. Install the right shoulder strap (2) of the safety belt near the contact position of the right shoulder of the human body and the seat (7), with the side airbag (5) of the right side abdominal belt of the safety belt attached thereto, and install the right side chest strap (4) of the safety belt near the contact position of the right side rib of the human body and the seat (7), with the top end of the right shoulder strap (2) of the safety belt and the right side chest strap (4) of the safety belt connected to the inside of the seat (7) through a retractor; B. Insert the right shoulder strap (2) of the safety belt and the right side chest strap (4) of the safety belt into the chest front lock buckle (12) in front of the chest, and wear the total safety belt chest front lock buckle (3) on the left shoulder strap (1) of the safety belt, which can freely adjust the position of the lock buckle. When it is in a comfortable position, buckle the total safety belt chest front lock buckle (3) to make the safety belt chest front lock buckle teeth (13) bite into the webbing of the left shoulder strap (1) of the safety belt, and lock and fix it; C. When the vehicle encounters a side impact, the upper torso of the occupant will move laterally and intrude along the xy direction. At this time, the ACU is ignited, the air pump generates gas, the side airbag (5) of the right side abdominal belt of the safety belt is detonated, forming a flexible buffer space of 30*30cm and a thickness of 5cm. At the same time, in the trend of the human body falling, the three safety belts absorb part of the impact energy of the human body, improve the protection effect of the human body, and change the falling trend of the human body to the protection area designed by the automobile, so as to avoid the hard release of the chest rib and the surface of the auxiliary instrument panel, and greatly reduce the injury of the occupant; The application device of the occupant protection method based on the seat transverse safety belt comprises a left shoulder strap (1) of a safety belt, a right shoulder strap (2) of a safety belt, and a right side chest strap (4) of a safety belt; The right shoulder strap (2) of the safety belt and the right side chest strap (4) of the safety belt are installed on the seat (7), and the top end of the right shoulder strap (2) of the safety belt and the right side chest strap (4) of the safety belt is connected to the inside of the seat (7) through a retractor. The right shoulder strap (2) of the safety belt is located near the contact position of the right shoulder of the human body and the seat (7), with the side airbag (5) of the right side abdominal belt of the safety belt attached thereto, and the lock buckle end of the right shoulder strap (2) of the safety belt is inserted into the side of the seat cushion of the seat (7) for fixation. The right side chest strap (4) of the safety belt is located near the contact position of the right side rib of the human body and the seat (7), and the lock buckle end of the right side chest strap is inserted into the side of the seat back of the seat (7) for fixation; After normal bundling of the safety belt, the right shoulder strap (2) of the safety belt exerts an x negative force on the human body to constrain the tendency of the human body to lean forward, correct the motion posture of the human body, and the right side chest strap (4) of the safety belt exerts a y negative force on the human body to constrain the tendency of the human body to lean sideways. Under the combined action of the right shoulder strap (2) of the safety belt, the right side chest strap (4) of the safety belt, and the left shoulder strap (1) of the safety belt, the motion posture of the occupant in motion and the adjustment of the secondary collision area are adjusted to make the occupant tend to the designed protection area; The right side chest strap (4) of the safety belt is attached with a right side abdominal strap side air bag (5) arranged at a distance of 20-40 cm from the locking end of the right side chest strap. When the vehicle encounters a side impact, the upper torso of the occupant will move laterally and intrude along the xy direction. At this time, the ACU is ignited, the air pump generates gas, the right side abdominal strap side air bag (5) is ignited, and a flexible buffer space of 30*30 cm and 5 cm in thickness is formed. When the vehicle is not impacted, the right shoulder strap (2) and the right side chest strap (4) of the safety belt are inserted into the chest front lock buckle (12) in front of the chest, the chest front lock buckle total (3) is worn on the left shoulder strap (1) of the safety belt, and the lock buckle position can be freely adjusted. When in a comfortable position, the chest front lock buckle total (3) is buckled to make the chest front lock buckle engaging teeth (13) bite into the webbing of the left shoulder strap (1), and the safety belt is locked and fixed. The chest front lock buckle (12) is a slidable lock buckle which can be locked after sliding to a comfortable position. The chest front lock buckle total (3) is provided with a chest front lock buckle pin shaft (11) to give the chest front lock buckle a rotational freedom and improve the convenience of wearing the safety belt. It also includes a safety air bag inflation pipeline (8) which is a flexible pipeline located inside the safety belt webbing and connected to the air bag inflation port for inflating the air bag when the safety air bag is ignited. It also includes a safety air bag and safety belt bonding area (9) which is the contact area between the air bag and the safety belt inside the safety belt webbing to ensure that the air bag is constrained on the safety belt when the safety air bag is ejected, and to ensure that the air bag has a protective effect on the fixed area of the human body. It also includes a safety air bag deployment weakening line (10) located on the surface of the webbing in the safety air bag storage area. When the air bag is deployed, the weakening line is easily torn to ensure that the air bag is deployed in the correct posture.

Images