Safety restraint auxiliary belt assembly, safety restraint assembly, and safety restraint method

Abstract

The present invention discloses a safety restraint auxiliary belt assembly, a safety restraint assembly, and a safety restraint method, which relate to the field of automobile safety restraints. The safety restraint auxiliary belt assembly is used in conjunction with a three-point safety belt, wherein the three-point safety belt has a shoulder belt section and a waist belt section, and includes: an auxiliary belt docking member for being mounted on the waist belt section; an auxiliary belt main member for being mounted on the automobile seat at a position corresponding to the position between the legs of the occupant; a docking mechanism connected to the auxiliary belt main member and detachably connected to the auxiliary belt docking member; and a pre-tensioning mechanism connected to the auxiliary belt main member and capable of pre-tensioning the auxiliary belt main member. The safety restraint assembly includes a three-point safety belt and the above-mentioned safety restraint auxiliary belt assembly; the safety restraint method uses the above-mentioned safety restraint assembly. The present invention can take into account both the comfort of the occupant in a normal sitting position and the comfort and safety of the occupant in a lying position.

Description

Technical Field

[0001] The present invention relates to the field of automobile safety restraints, and in particular to a safety restraint auxiliary belt component, a safety restraint assembly and a safety restraint method. Background Art

[0002] When seat belts first appeared, they were intended to solve the problem of protecting people in traffic accidents. However, they were criticized for being cumbersome to wear and having a poor user experience. Later, with the efforts of automotive engineers, three-point seat belts were proposed. They are easy to wear and safe, so they have been used to this day. Because of the good performance of three-point seat belts, with the exception of special vehicles such as racing cars, all civilian mass-produced vehicles in the world are currently equipped with three-point seat belts. However, three-point seat belts also have limitations, that is, they can only solve the problem of collision protection in normal sitting positions, and are insufficient for collision protection of occupants in lying positions, which may increase the risk of serious injury. Figure 1-Figure 2 As shown, when a passenger lies reclining in a seat and wears a three-point seatbelt, the deployed airbags offer no protection to the reclining passenger in a collision. Furthermore, the three-point seatbelt restrains the passenger, causing them to dive, failing to effectively secure them. Furthermore, the belt digging into the abdomen can cause serious injuries, a problem that remains unresolved. With the rapid development of intelligent and new energy vehicles, and the mass production of zero-gravity seats, the phenomenon of reclining passengers is increasing, necessitating the urgent need for a practical and effective protective solution.

[0003] CN109501712A discloses a four-point vehicle safety belt device. This device detects the occupant's seating position based on the amount of belt extension in order to optimize the occupant's seating position. The vehicle ECU detects the occupant's seating position based on the amount of belt extension that changes according to the occupant's seating position after the occupant is seated in the vehicle seat and the buckle device of the safety belt is connected to the tongue. If the amount of belt extension exceeds the allowable value for a period of time exceeding a specified time, the vehicle ECU controls the safety belt retractor to retract the safety belt. This vehicle four-point safety belt device has a safety belt on each of the left and right shoulders to restrain the human body, and only one buckle at the waist, making it easy to wear. Undoubtedly, the technical solution disclosed in the above patent document is a beneficial attempt in the relevant technical field. However, this type of seat belt still has the same problems as the three-point seat belt, and the lock position may be different for people of different body shapes. There is insufficient restraint on the waist. If the vehicle collides while the person is lying down, the occupant will slide out of the seat belt due to inertia, and the seat belt will not be able to protect the occupant.

[0004] CN115107604A discloses a seat control system, method, vehicle, and storage medium. The seat control system includes a sensing device, a seat sensor, a computing unit, and a seat control device. The sensing device is used to detect targets in the vehicle's travel path, as well as the target's physical attribute classification, motion speed, motion direction, and position relative to the vehicle. The seat sensor is used to detect the seat's posture and whether there is a passenger in the seat. The computing unit is connected to the sensing device and the seat sensor, respectively, to calculate the collision conditions and likelihood of the vehicle's collision with the target, the potential for passenger injury, and the necessary force-limiting restraint measures for the seat. The computing unit is connected to the sensing device and the seat sensor, respectively. The seat control device is used to adjust the seat's posture and constrain its motion, ensuring optimal contact between the human body and the airbag after a collision. The seat control device is connected to the computing unit. This invention enables passive seat posture adjustment in the event of a head-on collision, adjusting the human body's sitting posture to a position that facilitates contact with the frontal airbag, thereby mitigating or eliminating injuries caused by the collision. The technical solution disclosed in the aforementioned patent document is undoubtedly a beneficial attempt in the relevant technical field. However, this technical solution passively adjusts the seat posture, and the response speed still has room for improvement. Summary of the Invention

[0005] In view of this, an object of the present invention is to provide a safety restraint auxiliary belt assembly, a safety restraint assembly and a safety restraint method, which can take into account the comfort of the occupant in a normal sitting position and the comfort and safety of the occupant in a lying position.

[0006] A safety restraint auxiliary belt assembly in the present invention is used in conjunction with a three-point safety belt having a shoulder belt section and a waist belt section, comprising:

[0007] An auxiliary belt docking member, used for being mounted on the waist belt section;

[0008] The auxiliary belt main component is used to be installed in the position between the legs of the car seat;

[0009] a docking mechanism connected to the auxiliary belt main component and detachably connected to the auxiliary belt docking component;

[0010] The pre-tightening mechanism is connected to the auxiliary belt main component and can pre-tighten the auxiliary belt main component.

[0011] Furthermore, the docking mechanism and the pre-tightening mechanism are respectively connected to the front and rear parts of the auxiliary belt main component, and the pre-tightening mechanism can shorten the length of the auxiliary belt main component to achieve pre-tightening of the auxiliary belt main component.

[0012] Furthermore, the auxiliary belt main component includes a sleeve, a guide sleeve and an auxiliary belt steel cable, the sleeve is connected to the docking mechanism, the auxiliary belt steel cable is connected to the pre-tensioning mechanism, the guide sleeve is located between the sleeve and the pre-tensioning mechanism, and the sleeve and the guide sleeve are both externally mounted on the auxiliary belt steel cable.

[0013] Furthermore, a decorative protective cover is included, and the docking mechanism, sleeve and guide sleeve are all located on the lower side of the decorative protective cover.

[0014] Furthermore, the decorative protective cover is wide in the front and narrow in the back.

[0015] Furthermore, the sleeve has two openings, and the two openings are spaced apart in the left-right direction; the guide sleeve is fixedly connected to the decorative protective cover, and the guide sleeve includes a first channel and a second channel, the rear part of the first channel is connected to the rear part of the second channel, and the front part of the first channel and the front part of the second channel correspond to the two openings respectively; the head end of the auxiliary belt steel cable passes through the first channel, the sleeve and the second channel in sequence and is connected to the middle part of the auxiliary belt steel cable through a folding ear buckle.

[0016] Furthermore, the front portion of the decorative protective cover is provided with an adhesive member for connecting with a car seat.

[0017] Furthermore, the docking mechanism includes an auxiliary belt buckle, a connecting steel cable and a connecting end piece. The auxiliary belt buckle is fixedly connected to the connecting end piece through the connecting steel cable, and the connecting end piece is fixedly connected to the sleeve.

[0018] Furthermore, the auxiliary belt docking component includes a waist belt connector and an auxiliary belt pin fixedly connected to the waist belt connector, and the waist belt connector can be slidably connected to the waist belt section.

[0019] Furthermore, it also includes a limiting member, which can be fixedly connected to the waist belt section to limit the sliding stroke of the auxiliary belt docking component.

[0020] Furthermore, the pre-tensioning mechanism includes a pre-tensioner, and a reminder sensor is provided on the docking mechanism. Both the pre-tensioner and the reminder sensor can be connected to the vehicle safety controller.

[0021] A safety restraint assembly in the present invention includes a three-point safety belt and a safety restraint auxiliary belt component; the three-point safety belt includes a safety belt body, a sliding connector provided on the safety belt body, and a fixed connector connected to the sliding connector in a detachable manner; an upper mounting point and a lower mounting point are respectively provided at the upper and lower ends of the safety belt body, the shoulder belt section is formed between the upper mounting point and the sliding connector, and the lap belt section is formed between the lower mounting point and the sliding connector.

[0022] Furthermore, it also includes a car seat, which includes a seat cushion and a seat back rotatably connected to the seat cushion, the seat cushion includes a cushion frame and a cushion body arranged on the cushion frame, the cushion body is provided with an installation groove for accommodating the auxiliary belt main component and the docking mechanism, and the pre-tightening mechanism is fixedly connected to the cushion frame.

[0023] A safety restraint method in the present invention uses a safety restraint assembly and includes the following steps:

[0024] Obtaining first status information, and determining, based on the first status information, whether to remind the occupant that the safety restraint assembly is not activated; wherein the first status information includes vehicle driving status information, vehicle seat load status information, seatback angle information, safety restraint auxiliary belt assembly activation status information, and three-point seat belt activation status information;

[0025] Obtain second status information, and determine whether to pre-tighten and ignite the auxiliary safety restraint belt assembly and the three-point seat belt according to the second status information; wherein the second status information includes vehicle collision information, vehicle speed information, activation status information of the auxiliary safety restraint belt assembly, and activation status information of the three-point seat belt.

[0026] further,

[0027] Acquiring first status information and determining, based on the first status information, whether to remind an occupant that a safety restraint assembly is not enabled comprises the steps of:

[0028] S1, start;

[0029] S2. Obtain the vehicle driving status information and determine whether the vehicle is in the driving gear. If so, proceed to step S3; if not, proceed to step S8;

[0030] S3, obtaining the car seat load status information, and determining whether the car seat is occupied. If so, proceed to step S4; if not, proceed to step S8;

[0031] S4. Obtain activation status information of the three-point safety belt corresponding to the car seat in step S3, and determine whether the sliding connector of the three-point safety belt is connected to the fixed connector. If so, proceed to step S5; if not, proceed to step S7.

[0032] S5. Obtain the backrest inclination angle information of the car seat in step S3, and determine whether the backrest inclination angle of the car seat is greater than a preset inclination angle threshold. If so, proceed to step S6; if not, proceed to step S8;

[0033] S6. Obtain activation status information of the safety restraint auxiliary belt assembly corresponding to the vehicle seat in step S3, and determine whether the auxiliary belt docking member of the safety restraint auxiliary belt assembly is connected to the docking mechanism. If so, proceed to step S8; if not, proceed to step S7.

[0034] S7, reminding the occupant that the safety restraint assembly is not activated, and returning to step S1;

[0035] S8: No reminder is given and the process returns to step S1.

[0036] Furthermore, in step S7, the following steps are included:

[0037] S701, reminding the occupant that the safety restraint assembly is not activated and recording the reminder duration;

[0038] S702, determining whether the reminder duration exceeds the first time threshold, if not, returning to step S1, if yes, clearing the reminder duration and proceeding to step S703;

[0039] S703: Silence, record the silence duration, and then proceed to step S704;

[0040] S704: Determine whether the silence duration exceeds the second time threshold. If not, return to step S703; if yes, reset the silence duration to zero and return to step S1.

[0041] further,

[0042] Acquiring second state information and determining whether to pre-tighten and ignite the safety restraint auxiliary belt assembly and the three-point safety belt according to the second state information includes the following steps:

[0043] T1. Obtain car collision information;

[0044] T2. Determine whether the vehicle collision intensity exceeds a set collision intensity threshold based on the vehicle collision information. If so, proceed to step T3; if not, end.

[0045] T3. Obtain vehicle speed information and determine whether the vehicle speed exceeds the speed threshold. If so, proceed to step T4; if not, end the process.

[0046] T4. Obtain activation status information of the safety restraint auxiliary belt assembly and determine whether the auxiliary belt docking member of the safety restraint auxiliary belt assembly is connected to the docking mechanism. If so, proceed to step T5; if not, terminate.

[0047] T5. Pre-tighten and ignite the safety restraint auxiliary belt assembly, and proceed to step T6;

[0048] T6. Obtain activation status information of the three-point safety belt and determine whether the sliding connector of the three-point safety belt is connected to the fixed connector. If so, proceed to step T7; if not, end.

[0049] T7. Pre-tighten and ignite the three-point seat belt and end.

[0050] The beneficial effects of the present invention are:

[0051] (1) The safety restraint auxiliary belt assembly of the present invention is used in conjunction with a conventional three-point safety belt, and can take into account both the comfort of the occupant in a normal sitting position and the comfort and safety of the occupant in a reclining position. When the occupant is in a normal sitting position, the riding comfort will not be affected; when the occupant is in a reclining position, after the seat back tilts back a certain angle, the occupant removes the auxiliary belt main component from the seat cushion and connects the docking mechanism with the auxiliary belt docking component. The safety restraint auxiliary belt assembly transforms the conventional three-point safety belt into a four-point safety belt. After a vehicle collision and the pre-tightening ignition conditions of the safety restraint auxiliary belt assembly are met, before the occupant's body has a significant sliding motion relative to the vehicle, the pre-tightening mechanism ignites to tighten the auxiliary belt main component. The safety restraint auxiliary belt assembly acts on the human pelvis and firmly restrains the lap belt section of the three-point safety belt to the human hip, thereby restraining the occupant's body to the seat.

[0052] (2) Before the pre-tightening ignition conditions of the safety restraint auxiliary belt assembly are met, the auxiliary belt main component is in a relaxed state, which can ensure the comfort of the four-point safety belt, so that the occupant will not feel obviously restrained, reduce the occupant's resistance, and improve the occupant's enthusiasm for using the safety restraint auxiliary belt assembly;

[0053] (3) The pre-tightening method of the safety restraint auxiliary belt assembly of the present invention is simple and direct, the pre-tightening time is short, and the decorative protective cover improves the riding comfort and appearance. It can increase the contact area acting on the occupant's body, reduce the force of the auxiliary belt steel cable acting on the occupant's genitals and pelvis, and prevent the auxiliary belt steel cable from strangling the occupant's body;

[0054] (4) The safety restraint method of the present invention can remind the occupant that the safety restraint assembly is not activated, and can reasonably pre-tighten the safety restraint auxiliary belt assembly and the three-point safety belt. It can ensure that the length of the auxiliary belt cable of the safety restraint auxiliary belt assembly is shortened first, so that the decorative protective cover acts on the occupant's genitals and pelvis, and the lap belt section of the three-point safety belt is fixed at the hip position of the human body. This prevents the lap belt section and the rear section of the auxiliary belt cable from being mispositioned due to the pre-tightening of the three-point safety belt, which may cause strangulation to the human body. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] In order to make the purpose, technical solutions and beneficial effects of the present invention more clear, the present invention provides the following drawings for illustration:

[0056] Figure 1 A schematic diagram of the structure of an existing three-point safety belt for an occupant in a lying position;

[0057] Figure 2 This is a schematic diagram of the structure in which the airbag deploys and the occupant dives after a vehicle collision;

[0058] Figure 3 This is a schematic structural diagram of the safety restraint auxiliary belt assembly of the present invention;

[0059] Figure 4 It is a structural schematic diagram of the connection between the auxiliary belt docking member and the three-point safety belt of the present invention;

[0060] Figure 5 It is a structural schematic diagram of the auxiliary belt docking component of the present invention;

[0061] Figure 6 This is a schematic structural diagram of the connection between the safety restraint auxiliary belt assembly of the present invention and the car seat;

[0062] Figure 7 A schematic cross-sectional view of the connection between the safety restraint auxiliary belt assembly of the present invention and a car seat;

[0063] Figure 8 It is a structural schematic diagram of the mattress frame of the present invention;

[0064] Figure 9 Schematic bottom view of the safety restraint auxiliary belt assembly of the present invention;

[0065] Figure 10 is a side view schematic diagram of the safety restraint auxiliary belt assembly of the present invention;

[0066] Figure 11 This is a schematic diagram of the connection structure of the auxiliary belt buckle, the connecting steel cable and the first sheet of the present invention;

[0067] Figure 12 This is a schematic diagram of the connection structure of the connecting steel cable, the third sheet, the sleeve and the auxiliary belt steel cable of the present invention;

[0068] Figure 13 A schematic diagram showing that the lap belt section of an existing three-point safety belt cannot be restrained at the human hip during a vehicle collision;

[0069] Figure 14 A schematic diagram of a safety restraint auxiliary belt assembly restraining the lap belt section of a three-point safety belt at the hip of a human body during a vehicle collision;

[0070] Figure 15 for Figure 14Force analysis diagram of the central safety restraint auxiliary belt assembly exerting tension on the lap belt section of the three-point safety belt;

[0071] Figure 16 for Figure 14 Force analysis diagram of the safety restraint assembly acting on the human pelvis;

[0072] Figure 17 This is one of the flow charts of the security constraint method of the present invention;

[0073] Figure 18 This is the second flow chart of the security constraint method of the present invention.

[0074] The following are marked in the accompanying drawings:

[0075] 1-Safety restraint auxiliary belt assembly, 11-Auxiliary belt docking member, 111-Waist belt connector, 112-Auxiliary belt latch, 12-Auxiliary belt main member, 121-Sleeve, 122-Guide sleeve, 1221-First channel, 1222-Second channel, 123-Auxiliary belt steel cable, 124-Folding ear buckle, 13-Docking mechanism, 131-Auxiliary belt lock buckle, 132-Connecting steel cable, 133-First sheet, 134-Second sheet, 135-Third sheet, 136-First wiring harness, 14-Pretensioning mechanism, 141-Pretensioner, 142-Second wiring harness, 143-Mounting bracket, 15-Decorative protective cover, 151-Adhesive, 16-Limiting member;

[0076] 2-three-point safety belt, 21-safety belt body, 211-shoulder belt section, 212-lap belt section, 213-pleats, 22-sliding connector, 23-fixed connector;

[0077] 3-car seat, 31-seat cushion, 311-seat cushion body, 312-seat cushion frame, 313-connecting bracket, 32-seat back;

[0078] 4-Airbags. DETAILED DESCRIPTION

[0079] The technical solution of the present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0080] like Figure 3-Figure 11As shown, in this embodiment, a safety restraint auxiliary belt assembly 1 is used in conjunction with a three-point safety belt 2. The three-point safety belt 2 has a shoulder belt section 211 and a lap belt section 212, including an auxiliary belt docking component 11, an auxiliary belt main component 12, a docking mechanism 13 and a pre-tensioning mechanism 14; the auxiliary belt docking component 11 is used to be installed on the lap belt section 212; the auxiliary belt main component 12 is used to be installed in the position between the legs of the vehicle seat 3 corresponding to the occupant; the docking mechanism 13 is connected to the auxiliary belt main component 12 and is connected to the auxiliary belt docking component 11 in a detachable manner; the pre-tensioning mechanism 14 is connected to the auxiliary belt main component 12 and can pre-tighten the auxiliary belt main component 12.

[0081] The safety restraint auxiliary belt assembly 1 is used in conjunction with a conventional three-point seat belt 2, and can take into account both the comfort of the occupant in a normal sitting position and the comfort and safety of the occupant in a lying position. When the occupant is in a normal sitting position, the occupant only uses the three-point seat belt 2 and does not use the safety restraint auxiliary belt assembly 1. Figure 3 As shown, the auxiliary belt main component 12, docking mechanism 13, and pre-tensioning mechanism 14 are concealed within the seat cushion 31, without affecting riding comfort. When the occupant is in a reclining position and the seat back 32 is tilted backward at a certain angle, the occupant removes the auxiliary belt main component 12 from the seat cushion 31 and connects the docking mechanism 13 to the auxiliary belt docking component 11. The safety restraint auxiliary belt assembly 1 transforms a conventional three-point seat belt 2 into a four-point seat belt. Because the human abdomen is covered with soft fat and clothing, if the occupant is in a reclining position and the car seat 3 has a large backrest angle, the lap belt section 212 of the three-point seat belt 2 can easily slip from the hips and dig into the occupant's abdomen in the event of a collision. The enormous inertial force generated by the collision can cause rupture of internal organs or the intestines, or spinal injuries. If a four-point safety belt is worn, which is formed by combining the safety restraint belt assembly 1 with a conventional three-point safety belt 2, after a vehicle collision and the pre-tightening ignition conditions of the safety restraint belt assembly 1 are met, before the occupant's body has significantly slid relative to the vehicle, the pre-tightening mechanism 14 ignites to tighten the auxiliary belt main component 12, and the safety restraint belt assembly 1 acts on the human pelvis and firmly restrains the waist belt section 212 of the three-point safety belt 2 to the human hips, thereby restraining the occupant's body to the seat. Figure 13-16As shown, when the auxiliary belt main component 12 is pre-tightened, the tension F exerted by the auxiliary belt docking component 11 on the lap belt section 212 of the three-point safety belt 2 will form a horizontal forward component Fx and a vertical downward component Fz. Under the action of these two components, the lap belt section 212 of the three-point safety belt 2 is fixed at the human body's hip position; at the same time, the force F' exerted by the safety restraint auxiliary belt assembly 1 on the human body's pelvis will generate a horizontal backward component Fx' and a vertical downward component Fz'. Under the action of these two components, the human body is restrained on the seat and prevented from sliding forward, thereby preventing the occupant from diving. It is worth noting that before the pre-tightening ignition conditions of the safety restraint auxiliary belt assembly 1 are met, the auxiliary belt main component 12 is in a relaxed state, which can ensure the comfort of the four-point safety belt, so that the occupant will not have a noticeable sense of being restrained, reduce the occupant's resistance, and increase the occupant's enthusiasm for using the safety restraint auxiliary belt assembly 1. After the pre-tightening ignition conditions of the safety restraint auxiliary belt assembly 1 are met, the pre-tightening mechanism 14 is ignited to tighten the auxiliary belt main component 12. At this time, the safety restraint auxiliary belt assembly 1 acts on the human pelvis, wherein the pre-tightening ignition conditions of the safety restraint auxiliary belt assembly 1 are that the vehicle collision intensity exceeds the set collision intensity threshold, the vehicle speed exceeds the vehicle speed threshold, and the safety restraint auxiliary belt assembly 1 is in a normally activated state.

[0082] In this embodiment, Figure 7 As shown, the docking mechanism 13 and the pre-tightening mechanism 14 are respectively connected to the front and rear of the auxiliary belt main component 12. The pre-tightening mechanism 14 can shorten the length of the auxiliary belt main component 12 to achieve pre-tightening of the auxiliary belt main component 12. This pre-tightening method is simple and direct, and the pre-tightening effect time is short.

[0083] In this embodiment, Figure 9-10 As shown, the auxiliary belt main component 12 includes a sleeve 121, a guide sleeve 122 and an auxiliary belt steel cable 123. The sleeve 121 is connected to the docking mechanism 13, the auxiliary belt steel cable 123 is connected to the pre-tensioning mechanism 14, the guide sleeve 122 is located between the sleeve 121 and the pre-tensioning mechanism 14, and the sleeve 121 and the guide sleeve 122 are both externally mounted on the auxiliary belt steel cable 123. The sleeve 121 can rotate relative to the auxiliary belt steel cable 123, which can facilitate the connection between the auxiliary belt docking component 11 and the docking mechanism 13.

[0084] In this embodiment, Figure 9-10As shown, the seat cushion also includes a decorative protective cover 15, and the docking mechanism 13, sleeve 121, and guide sleeve 122 are all located on the lower side of the decorative protective cover 15. The seat cushion body 311 is provided with a mounting groove for accommodating the auxiliary belt main component 12 and the docking mechanism 13. The decorative protective cover 15 can not only shield the mounting groove and the auxiliary belt main component 12, the docking mechanism 13, and other components, improving riding comfort and appearance, but also increase the contact area with the occupant's body. Because the decorative protective cover 15 is made of textile material, it is highly soft and has a cushioning effect. Therefore, the decorative protective cover 15 can reduce the force of the auxiliary belt cable 123 on the occupant's genitals and pelvis, preventing the auxiliary belt cable 123 from strangulating the occupant's body.

[0085] In this embodiment, Figure 9 As shown, the decorative protective cover 15 is wide in front and narrow in back, and the wide in front and narrow in back shape fits the triangular area of ​​the human genitals, ensuring that it fits the human genitals without strangling the human body.

[0086] In this embodiment, Figure 9 As shown, the sleeve 121 has two openings, which are spaced apart in the left-right direction; the guide sleeve 122 is fixedly connected to the decorative protective cover 15, and the guide sleeve 122 includes a first channel 1221 and a second channel 1222. The rear part of the first channel 1221 is connected to the rear part of the second channel 1222, and the front part of the first channel 1221 and the front part of the second channel 1222 correspond to the two openings respectively; the head end of the auxiliary belt steel cable 123 passes through the first channel 1221, the sleeve 121 and the second channel 1222 in sequence and is connected to the middle part of the auxiliary belt steel cable 123 through the folding ear buckle 124. The auxiliary belt steel cable 123 on the lower side of the decorative protective cover 15 is ring-shaped, which ensures the connection strength between the sleeve 121 and the auxiliary belt steel cable 123. At the same time, the sleeve 121 and the guide sleeve 122 separate the auxiliary belt steel cable 123 and have a spacing, which can distribute the force and prevent the auxiliary belt steel cable 123 from strangling the human body, and can make the decorative protective cover 15 smoother and more beautiful. In addition, the sleeve 121 can also prevent the docking mechanism 13 from wearing the auxiliary belt steel cable 123.

[0087] In this embodiment, Figure 9 As shown, the front portion of the decorative protective cover 15 is provided with an adhesive 151 for connecting to the vehicle seat 3. Adhesive 151 can be a Velcro or snap structure sewn onto the decorative protective cover 15. The seat cushion 31 is also provided with a matching Velcro or snap structure. When the occupant is in a normal sitting position, using only the three-point seat belt 2 and not the auxiliary safety restraint belt assembly 1, the decorative protective cover 15 is adhered to the seat cushion 31, obscuring the mounting slot, the auxiliary belt main component 12, the docking mechanism 13, and other components.

[0088] In this embodiment, the docking mechanism 13 includes an auxiliary belt buckle 131, a connecting steel cable 132, and a connecting end piece. The auxiliary belt buckle 131 is fixedly connected to the connecting end piece through the connecting steel cable 132, and the connecting end piece is fixedly connected to the sleeve 121. The connecting end piece can be an integrated structure or a split structure; Figures 9-11 As shown, when the connecting end piece is a split structure, the connecting end piece includes a first piece 133 and a second piece 134, the auxiliary belt lock buckle 131 is fixedly connected to the first piece 133 through a connecting steel cable 132, and the first piece 133 and the second piece 134 are respectively provided with connecting holes, the first piece 133 is connected to the second piece 134 by riveting or bolting, and the second piece 134 is fixedly connected to the sleeve 121; Figure 12 As shown, when the connecting end piece is an integrated structure, the connecting end piece includes a third piece 135 , the auxiliary belt lock buckle 131 is fixedly connected to the third piece 135 via a connecting steel cable 132 , and the third piece 135 is fixedly connected to the sleeve 121 .

[0089] In this embodiment, Figure 3-Figure 5 As shown, the auxiliary belt docking member 11 includes a waist belt connector 111 and an auxiliary belt latch 112 fixedly connected to the waist belt connector 111. The waist belt connector 111 can be slidably connected to the waist belt section 212. The auxiliary belt latch 112 is detachably connected to the auxiliary belt buckle 131. Inserting the auxiliary belt latch 112 into the auxiliary belt buckle 131 can connect the two, and pulling the auxiliary belt latch 112 out of the auxiliary belt buckle 131 can separate the two. The waist belt connector 111 is provided with a through slot that can be fitted over the waist belt section 212. Preferably, the width of the through slot is slightly smaller than the width of the waist belt section 212. After the through slot of the waist belt connector 111 is fitted over the waist belt section 212, wrinkles 213 are generated in the waist belt section 212 of the three-point safety belt 2. While ensuring that the waist belt connector 111 can slide, it also has a certain damping force to prevent the waist belt connector 111 from sliding too smoothly, and to prevent the auxiliary belt docking component 11 from easily shaking and sliding on the three-point safety belt 2 when not in use.

[0090] In this embodiment, Figure 3-Figure 4 As shown, the three-point safety belt 2 further includes a stopper 16 that can be fixedly connected to the waist belt section 212 to limit the sliding travel of the auxiliary belt docking member 11. The auxiliary belt docking member 11 is confined between the stopper 16 and the sliding connector 22 of the three-point safety belt 2, making it easier for the occupant to quickly find the auxiliary belt docking member 11 when connecting.

[0091] In this embodiment, Figure 7-10As shown, the pretensioning mechanism 14 includes a pretensioner 141, and a reminder sensor is provided on the docking mechanism 13. Both the pretensioner 141 and the reminder sensor are capable of being connected to the vehicle safety controller. The reminder sensor can determine whether the auxiliary belt docking member 11 of the safety restraint auxiliary belt assembly 1 is connected to the docking mechanism 13 based on whether the auxiliary belt pin 112 is inserted into the auxiliary belt buckle 131, thereby allowing the vehicle safety controller to obtain information about the activation status of the safety restraint auxiliary belt assembly 1. If the auxiliary belt pin 112 is inserted into the auxiliary belt buckle 131, the safety restraint auxiliary belt assembly 1 is considered to be properly activated; if the auxiliary belt pin 112 is not inserted into the auxiliary belt buckle 131, the safety restraint auxiliary belt assembly 1 is considered to be inactivated. Preferably, the reminder sensor is connected to the vehicle safety controller via a first wiring harness 136, and the pretensioner 141 is connected to the vehicle safety controller via a second wiring harness 142. The pretensioning mechanism 14 also includes a mounting bracket 143, and the pretensioner 141 is fixedly connected to the seat cushion frame 312 via the mounting bracket 143.

[0092] A safety restraint assembly in this embodiment, such as Figure 3 and Figure 4 As shown, it includes a three-point safety belt 2 and a safety restraint auxiliary belt assembly 1; the three-point safety belt 2 includes a safety belt body 21, a sliding connector 22 arranged on the safety belt body 21, and a fixed connector 23 connected to the sliding connector 22 in a detachable manner; the upper and lower ends of the safety belt body 21 are respectively provided with an upper mounting point and a lower mounting point, a shoulder belt section 211 is formed between the upper mounting point and the sliding connector 22, and a waist belt section 212 is formed between the lower mounting point and the sliding connector 22.

[0093] In this embodiment, Figure 3 、 Figure 6-Figure 8 As shown, the vehicle seat 3 also includes a seat cushion 31 and a seat back 32 pivotally connected to the seat cushion 31. The seat cushion 31 includes a seat cushion frame 312 and a seat cushion body 311 mounted on the seat cushion frame 312. The seat cushion body 311 is provided with a mounting slot for accommodating the auxiliary belt main component 12 and the docking mechanism 13. The pretensioning mechanism 14 is fixedly connected to the seat cushion frame 312. A connecting bracket 313 is provided on the seat cushion frame 312. The pretensioner 141 is connected to the connecting bracket 313 via the mounting bracket 143, which can be bolted or riveted. The upper and lower ends of the seat belt body 21 are respectively provided with upper and lower mounting points. The upper and lower mounting points can be connected to the vehicle body. The fixed connector 23 can be connected to the vehicle body or the vehicle seat 3. The upper and lower mounting points are located on one side of the vehicle seat 3, and the fixed connector 23 is located on the other side of the vehicle seat 3.

[0094] A safety constraint method in this embodiment uses a safety constraint assembly, including the following steps:

[0095] Obtaining first status information, and determining, based on the first status information, whether to remind the occupant that the safety restraint assembly is not activated; wherein the first status information includes vehicle driving status information, vehicle seat load status information, seatback angle information, activation status information of the safety restraint auxiliary belt assembly 1, and activation status information of the three-point seat belt;

[0096] Obtain second state information, and determine whether to pre-tighten and ignite the auxiliary safety restraint belt assembly 1 and the three-point safety belt 2 based on the second state information; wherein the second state information includes vehicle collision information, vehicle speed information, activation state information of the auxiliary safety restraint belt assembly 1, and activation state information of the three-point safety belt.

[0097] like Figure 17 As shown, in this embodiment,

[0098] Acquiring first status information and determining, based on the first status information, whether to remind an occupant that a safety restraint assembly is not enabled includes the following steps:

[0099] S1, start;

[0100] S2. Obtain the vehicle driving status information and determine whether the vehicle is in the driving gear. If so, proceed to step S3; if not, proceed to step S8;

[0101] S3, obtaining the car seat load status information, and determining whether the car seat 3 is occupied. If so, proceed to step S4; if not, proceed to step S8;

[0102] S4. Obtain activation status information of the three-point safety belt corresponding to the car seat 3 in step S3, and determine whether the sliding connector 22 of the three-point safety belt 2 is connected to the fixed connector 23. If so, proceed to step S5; if not, proceed to step S7.

[0103] S5. Obtain the backrest inclination information of the car seat 3 in step S3, and determine whether the backrest inclination of the car seat 3 is greater than a preset inclination threshold. If so, proceed to step S6; if not, proceed to step S8.

[0104] S6. Obtain activation status information of the safety restraint auxiliary belt assembly 1 corresponding to the vehicle seat 3 in step S3, and determine whether the auxiliary belt docking member 11 of the safety restraint auxiliary belt assembly 1 is connected to the docking mechanism 13. If so, proceed to step S8; if not, proceed to step S7.

[0105] S7, reminding the occupant that the safety restraint assembly is not activated, and returning to step S1;

[0106] S8: No reminder is given and the process returns to step S1.

[0107] When the car is in driving gear, there is someone sitting on the car seat 3 and the sliding connector 22 of the three-point safety belt 2 of the car seat 3 is not connected to the fixed connector 23, the occupant is reminded that the occupant safety restraint assembly is not activated; when the car is in driving gear, there is someone sitting on the car seat 3, the sliding connector 22 of the three-point safety belt 2 of the car seat 3 is connected to the fixed connector 23, the backrest inclination angle of the car seat 3 is greater than the preset inclination angle threshold and the auxiliary belt docking member 11 of the safety restraint auxiliary belt assembly 1 of the car seat 3 is not connected to the docking mechanism 13, the occupant is also reminded that the occupant safety restraint assembly is not activated; the reminder method can be sound reminder, graphic reminder, image and sound reminder, graphic and vibration reminder or sound and vibration reminder.

[0108] In this embodiment, step S7 includes the following steps:

[0109] S701, reminding the occupant that the safety restraint assembly is not activated and recording the reminder duration;

[0110] S702, determining whether the reminder duration exceeds the first time threshold, if not, returning to step S1, if yes, clearing the reminder duration and proceeding to step S703;

[0111] S703: Silence, record the silence duration, and then proceed to step S704;

[0112] S704: Determine whether the silence duration exceeds the second time threshold. If not, return to step S703; if yes, reset the silence duration to zero and return to step S1.

[0113] In step S7, if the reminder duration is short, the system returns directly to step S1 and loops back to the previous step. If the safety restraint assembly has not been activated, the reminder will continue to be issued. If the reminder duration is long and the passenger still has not properly activated the safety restraint assembly, the system remains silent for a period of time before returning to step S1 and looping back to the previous step. Silence refers to stopping the reminder. The first and second time thresholds can be set during vehicle development by comprehensively considering the priority of occupant protection and comfort requirements. If occupant protection takes precedence over comfort, the first time threshold is higher and the second time threshold is lower. For example, the first time threshold is 30 seconds and the second time threshold is 5 seconds, meaning a 30-second reminder followed by a 5-second silence. If occupant protection takes precedence over comfort, the first and second time thresholds are closer, for example, the first time threshold is 10 seconds and the second time threshold is 10 seconds, meaning a 10-second reminder followed by a 10-second silence.

[0114] like Figure 18 As shown, in this embodiment,

[0115] Acquiring second state information and determining whether to pre-tighten and ignite the safety restraint auxiliary belt assembly 1 and the three-point safety belt 2 according to the second state information includes the following steps:

[0116] T1. Obtain car collision information;

[0117] T2. Determine whether the vehicle collision intensity exceeds a set collision intensity threshold based on the vehicle collision information. If so, proceed to step T3; if not, end.

[0118] T3. Obtain vehicle speed information and determine whether the vehicle speed exceeds the speed threshold. If so, proceed to step T4; if not, end the process.

[0119] T4. Obtain activation status information of the safety restraint auxiliary belt assembly 1 and determine whether the auxiliary belt docking member 11 of the safety restraint auxiliary belt assembly 1 is connected to the docking mechanism 13. If so, proceed to step T5; if not, end;

[0120] T5. Pre-tighten and ignite the safety restraint auxiliary belt assembly 1, and proceed to step T6;

[0121] T6. Obtain the activation status information of the three-point safety belt and determine whether the sliding connector 22 of the three-point safety belt 2 is connected to the fixed connector 23. If so, proceed to step T7; if not, end;

[0122] T7. Pre-tighten and ignite the three-point safety belt 2, and end.

[0123] The car collision information can be acceleration information or collision intensity sensor detection information. The car usually uses the car collision information to determine whether the airbag 4 needs to be detonated. In this embodiment, when determining whether the car collision intensity exceeds the set collision intensity threshold, the set collision intensity threshold is less than the collision intensity threshold for determining whether the airbag 4 needs to be detonated, thereby ensuring that the pre-tensioning mechanism 14 is ignited before the airbag 4 is detonated to tighten the auxiliary belt main component 12. At this time, the occupant's body has not yet slid significantly relative to the vehicle.

[0124] During use, the pre-tensioning of the safety restraint belt assembly 1 is performed before the pre-tensioning of the three-point safety belt 2. This ensures that the length of the auxiliary belt cable 123 of the safety restraint belt assembly 1 is shortened first, allowing the decorative protective cover 15 to act on the occupant's genitals and pelvis, and securing the lap belt section 212 of the three-point safety belt 2 at the hip bone. This prevents the lap belt section 212 and the rear section of the auxiliary belt cable 123 from being misaligned due to the pre-tensioning of the three-point safety belt 2, which could cause strangulation.

[0125] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A safety restraint auxiliary belt assembly for use with a three-point safety belt (2), wherein the three-point safety belt (2) has a shoulder belt section (211) and a waist belt section (212), characterized in that: include: An auxiliary belt docking member (11) for being mounted on the waist belt section (212); An auxiliary belt main component (12) is used for being installed on the automobile seat (3) at a position corresponding to the position between the legs of the occupant; A docking mechanism (13) connected to the auxiliary belt main component (12) and detachably connected to the auxiliary belt docking component (11); A pre-tightening mechanism (14) is connected to the auxiliary belt main component (12) and is capable of pre-tightening the auxiliary belt main component (12); and a decorative protective cover (15); The auxiliary belt main component (12) comprises a sleeve (121), a guide sleeve (122) and an auxiliary belt steel cable (123); the sleeve (121) is connected to the docking mechanism (13); the auxiliary belt steel cable (123) is connected to the pre-tightening mechanism (14); the guide sleeve (122) is located between the sleeve (121) and the pre-tightening mechanism (14); the sleeve (121) and the guide sleeve (122) are both mounted on the auxiliary belt steel cable (123); the docking mechanism (13), the sleeve (121) and the guide sleeve (122) are all located on the lower side of the decorative protective cover (15); the sleeve (121) has two openings, and the two openings are The openings are arranged at intervals along the left and right directions; the guide sleeve (122) is fixedly connected to the decorative protective sleeve (15), and the guide sleeve (122) includes a first channel (1221) and a second channel (1222), the rear part of the first channel (1221) is connected to the rear part of the second channel (1222), and the front part of the first channel (1221) and the front part of the second channel (1222) correspond to the two openings respectively; the head end of the auxiliary belt steel cable (123) passes through the first channel (1221), the sleeve (121) and the second channel (1222) in sequence and is connected to the middle part of the auxiliary belt steel cable (123) through the folding ear buckle (124).

2. The safety restraint auxiliary belt assembly according to claim 1, characterized in that: The docking mechanism (13) and the pre-tightening mechanism (14) are respectively connected to the front and rear of the auxiliary belt main component (12); the pre-tightening mechanism (14) can shorten the length of the auxiliary belt main component (12) to achieve pre-tightening of the auxiliary belt main component (12).

3. The safety restraint auxiliary belt assembly according to claim 1, characterized in that: The decorative protective cover (15) is in a shape that is wide at the front and narrow at the back.

4. The safety restraint auxiliary belt assembly according to claim 1, characterized in that: The front portion of the decorative protective cover (15) is provided with an adhesive component (151) for connecting with the car seat (3).

5. The safety restraint auxiliary belt assembly according to claim 1, characterized in that: The docking mechanism (13) comprises an auxiliary belt buckle (131), a connecting steel cable (132), and a connecting end piece, wherein the auxiliary belt buckle (131) is fixedly connected to the connecting end piece via the connecting steel cable (132), and the connecting end piece is fixedly connected to the sleeve (121).

6. The safety restraint auxiliary belt assembly according to claim 1, characterized in that: The auxiliary belt docking member (11) comprises a waist belt connector (111) and an auxiliary belt latch (112) fixedly connected to the waist belt connector (111); the waist belt connector (111) can be slidably connected to the waist belt section (212).

7. The safety restraint auxiliary belt assembly according to claim 6, characterized in that: It also includes a limiting member (16), which can be fixedly connected to the waist belt section (212) to limit the sliding stroke of the auxiliary belt docking member (11).

8. The safety restraint auxiliary belt assembly according to any one of claims 1 to 7, characterized in that: The pre-tightening mechanism (14) includes a pre-tightening device (141), and a reminder sensor is provided on the docking mechanism (13). Both the pre-tightening device (141) and the reminder sensor can be connected to a vehicle safety controller.

9. A safety restraint assembly, characterized in that: The invention comprises a three-point safety belt (2) and a safety restraint auxiliary belt assembly as claimed in claim 8; the three-point safety belt (2) comprises a safety belt body (21), a sliding plug-in body (22) arranged on the safety belt body (21), and a fixed plug-in body (23) connected to the sliding plug-in body (22) in a detachable manner; an upper mounting point and a lower mounting point are respectively provided at the upper and lower ends of the safety belt body (21), the shoulder belt section (211) is formed between the upper mounting point and the sliding plug-in body (22), and the waist belt section (212) is formed between the lower mounting point and the sliding plug-in body (22).

10. The safety restraint assembly according to claim 9, characterized in that: The vehicle further comprises a car seat (3), the car seat (3) comprising a seat cushion (31) and a seat back (32) rotatably connected to the seat cushion (31), the seat cushion (31) comprising a seat cushion frame (312) and a seat cushion body (311) arranged on the seat cushion frame (312), the seat cushion body (311) being provided with a mounting groove for accommodating the auxiliary belt main component (12) and the docking mechanism (13), and the pre-tightening mechanism (14) being fixedly connected to the seat cushion frame (312).

11. A safety constraint method, characterized in that: The safety restraint assembly according to claim 10 is used, comprising: Obtaining first status information, and determining, based on the first status information, whether to remind the occupant that the safety restraint assembly is not activated; wherein the first status information includes vehicle driving status information, vehicle seat load status information, seatback angle information, safety restraint auxiliary belt assembly activation status information, and three-point seat belt activation status information; Acquire second state information, and determine whether to pre-tighten and ignite the safety restraint auxiliary belt assembly and the three-point safety belt (2) according to the second state information; wherein the second state information includes vehicle collision information, vehicle speed information, safety restraint auxiliary belt assembly activation state information, and three-point safety belt activation state information.

12. The safety restraint method according to claim 11, characterized in that: Acquiring first status information and determining, based on the first status information, whether to remind an occupant that a safety restraint assembly is not enabled comprises the steps of: S1. Obtaining first status information; wherein the first status information includes vehicle driving status information, vehicle seat load status information, backrest inclination information, safety restraint auxiliary belt assembly activation status information, and three-point seat belt activation status information; S2. Determine whether the vehicle is in the driving gear according to the vehicle driving status information. If so, proceed to step S3; if not, proceed to step S8; S3, judging whether the car seat (3) is occupied by someone based on the car seat load status information, if so, proceeding to step S4, if not, proceeding to step S8; S4, judging whether the sliding connector (22) of the three-point safety belt (2) is connected to the fixed connector (23) according to the activation status information of the three-point safety belt corresponding to the car seat (3) in step S3, if so, proceeding to step S5, if not, proceeding to step S7; S5, judging whether the backrest inclination angle of the car seat (3) is greater than a preset inclination angle threshold value based on the backrest inclination angle information of the car seat (3) in step S3, if so, proceeding to step S6, if not, proceeding to step S8; S6, judging whether the auxiliary belt docking member (11) of the safety restraint auxiliary belt assembly is connected to the docking mechanism (13) based on the activation status information of the safety restraint auxiliary belt assembly corresponding to the car seat (3) in step S3, and if so, proceeding to step S8, and if not, proceeding to step S7; S7, reminding the occupant that the safety restraint assembly is not activated, and returning to step S1; S8: No reminder is given and the process returns to step S1.

13. The safety restraint method according to claim 12, characterized in that: In step S7, the following steps are included: S701, reminding the occupant that the safety restraint assembly is not activated and recording the reminder duration; S702, determine whether the reminder duration exceeds the first time threshold, if not, return to step S1, if so, clear the reminder duration and enter step S703; S703: Silence, record the silence duration, and then proceed to step S704; S704: Determine whether the silence duration exceeds the second time threshold. If not, return to step S703. If so, reset the silence duration to zero and return to step S1.

14. The safety restraint method according to claim 13, characterized in that: Acquiring second state information and judging whether to pre-tighten and ignite the safety restraint auxiliary belt assembly and the three-point safety belt (2) according to the second state information, including the steps of: T1. Acquire second status information; wherein the second status information includes vehicle collision information, vehicle speed information, safety restraint auxiliary belt assembly activation status information, and three-point seat belt activation status information; T2. Determine whether the collision intensity of the vehicle exceeds the set collision intensity threshold based on the vehicle collision information. If so, proceed to step T3; if not, end the process. T3. Determine whether the vehicle speed exceeds the speed threshold based on the vehicle speed information. If so, proceed to step T4; if not, end. T4, judging whether the auxiliary belt docking member (11) of the safety restraint auxiliary belt assembly is connected to the docking mechanism (13) based on the activation status information of the safety restraint auxiliary belt assembly, if so, proceeding to step T5, if not, ending; T5. Pre-tighten and ignite the safety restraint auxiliary belt assembly, and proceed to step T6; T6, judging whether the sliding connector (22) of the three-point safety belt (2) is connected to the fixed connector (23) according to the three-point safety belt activation status information, if so, proceeding to step T7, if not, ending; T7. Pre-tighten and ignite the three-point safety belt (2), and end.

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