Vehicle seat belt

Abstract

The invention relates to a vehicle seat safety belt which comprises a woven belt, a first retractor and a second retractor, the woven belt is provided with a furling end, the furling end is furled on a first retractor on the outer side of a vehicle seat, the woven belt is provided with a first spring bolt, and the first spring bolt is used for being clamped into a first lock catch on the inner lower side of the vehicle seat; the first end of the tensioning belt can be fixedly connected between the furling end of the woven belt and the first spring bolt, and the second end of the tensioning belt is movably installed on the outer side of a vehicle seat so that the length of the tensioning belt can be changed. When a first lock tongue on the braid is clamped into a first lock catch on the inner lower side of a vehicle seat, the braid forms a shoulder strap and a waist strap which are obliquely spanned along the outer upper part and the inner lower part, and when a vehicle is collided or suddenly stopped and the upper half body of a passenger flaps forwards and curls downwards, the shoulder strap formed by the braid is pulled through a length-variable tensioning strap, so that the upper half body of the passenger can be tightened. The shoulder strap is moved away from the neck of the occupant to eliminate or delay the likelihood that the shoulder strap interferes with the neck of the occupant.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle seat safety belts, and in particular to a vehicle seat safety belt with a length-shortenable tightening belt. BACKGROUND

[0002] During a front collision of a vehicle, a passenger in a reclined seat position has a risk of interference between the neck and shoulder safety belts, which may cause the passenger's neck to be injured, and even life-threatening.

[0003] In the related art, an additional webbing is used to adjust the position of the shoulder belt of the webbing, but the additional webbing only functions as a height adjuster and cannot effectively eliminate the risk of interference between the neck and shoulder safety belt webbings of the passenger in a reclined seat during a collision. SUMMARY

[0004] To overcome the problems in the related art, the present disclosure provides a vehicle seat safety belt, which aims to change the route of the shoulder belt during a collision to eliminate or delay the possibility of interference between the shoulder belt and the passenger's neck.

[0005] According to a first aspect of the embodiments of the present disclosure, the present disclosure provides a vehicle seat safety belt, comprising: a webbing having a winding end wound in a first winder outside a vehicle seat, a first lock tongue provided on the webbing for being clamped into a first lock catch inside a lower side of the vehicle seat; and a tightening belt, a first end of the tightening belt being fixedly connected between the winding end and the first lock tongue of the webbing, a second end of the tightening belt being movably mounted outside the vehicle seat to change the length of the tightening belt.

[0006] In some embodiments, the second end of the tightening belt is wound in a second winder outside a lower side of the vehicle seat.

[0007] In some embodiments, a second lock tongue is provided at the second end of the tightening belt, the second lock tongue being used for being clamped into a second lock catch located at the lower side outside the vehicle seat, by shortening a steel wire rope connected with the second lock catch, the second end of the tightening belt is movable and the inclination angle of the webbing is changed.

[0008] In some embodiments, the tightening belt is provided separately from the webbing, and the material of the tightening belt is the same as that of the webbing.

[0009] In some embodiments, the webbing further has a fixed end fixed to the lower side outside the vehicle seat, and the first lock catch and the fixed end define a waist belt across the webbing.

[0010] In some embodiments, the webbing further has a fixed end, which is fixedly connected between the winding end and the first tongue of the webbing, wherein the webbing further has a second tongue between the first tongue and the fixed end, the second tongue is used to be clamped into a second buckle located at the outer lower side of the vehicle seat, the fixed end and the second tongue define the tightening belt, the fixed end is the first end of the tightening belt, and the second tongue is the second end of the tightening belt.

[0011] In some embodiments, the first tongue and the second tongue define a waist belt across the webbing.

[0012] In some embodiments, the first end of the tightening belt is fixedly connected to the webbing by sewing.

[0013] In some embodiments, the webbing further has a guide ring located at the outer upper side of the vehicle seat, the guide ring and the first tongue define a shoulder belt of the webbing, wherein the first end of the tightening belt is fixedly connected to the middle part of the shoulder belt.

[0014] In some embodiments, after the passenger wears the safety belt, the fixed connection position of the first end of the tightening belt to the webbing is located in front of the chest of the passenger, and the second end of the tightening belt is movably connected to the outer side of the vehicle seat through the armpit of the passenger, so that the tightening belt is located in a diagonal manner in front of the chest of the passenger.

[0015] The technical scheme provided by the embodiments of the present disclosure can have the following beneficial effects: when the first tongue of the webbing is clamped into the first buckle located at the inner lower side of the vehicle seat, the webbing forms a shoulder belt and a waist belt which are diagonal across the outer upper side and the inner lower side, and when the vehicle is in a collision or a sudden stop, the upper body of the occupant has a forward falling and downward curling action, the shoulder belt formed by the webbing is pulled by the tightening belt with variable length, so that the shoulder belt is away from the neck of the occupant, thereby eliminating or delaying the possibility of interference between the shoulder belt and the neck of the occupant. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0017] Figure 1 is a schematic view of a vehicle seat belt according to an exemplary embodiment;

[0018] Figure 2 is a schematic view of a vehicle seat belt according to another exemplary embodiment;

[0019] Figure 3 is Figure 1 and Figure 2Fig. 1 is a schematic view of a structure of a seat belt in use on a vehicle seat frame;

[0020] Figure 4 Fig. 2 is a schematic view of a structure of a seat belt after a passenger wears the seat belt. DETAILED DESCRIPTION

[0021] The exemplary embodiments will be described in detail herein with reference to the attached drawings. In the following description, the same numbers are used to indicate the same or similar elements, unless otherwise represented. The embodiments described in the following exemplary embodiments do not represent all the embodiments consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the present disclosure, as detailed in the appended claims.

[0022] To solve the above technical problems, the present disclosure provides a vehicle seat belt 100. As shown in Figures 1 to 4 The seat belt 100 can be applied to various vehicle seats 200, including but not limited to cars, trucks, buses, and trains, etc.

[0023] The seat belt 100 is applied to a seat belt system, which includes a retractor, a guide ring, a locking device, etc. in addition to the seat belt 100.

[0024] Specifically, the seat belt 100 includes a webbing 10, which is usually made of synthetic fibers such as nylon or polyester, and has a specific width and thickness to ensure sufficient strength and elongation.

[0025] The retractor includes a first retractor 300, which is a device for adjusting the length of the webbing 10 and winding the webbing 10 when not in use. It can adjust the tightness of the seat belt 100 according to the sitting posture and body shape of the passenger, and ensure that the passenger can be effectively fixed in an emergency.

[0026] The first retractor 300 is usually arranged on the outer lower side or the outer upper side of the vehicle frame, and the guide ring (not shown in the figure) is usually fixed on the outer upper end of the vehicle seat 200. The webbing 10 usually includes a winding end 11 and a fixed end 12, the winding end 11 of the webbing 10 is wound in the first retractor 300, and the fixed end 12 passes through the guide ring.

[0027] The safety belt 100 further comprises a first tongue 30 slidably sleeved on the webbing 10, and a first buckle 500 is arranged on the inner lower side of the vehicle seat 200 for the first tongue 30 to be clamped into. When the first retractor 300 releases the webbing 10, the first tongue 30 is clamped into the first buckle 500, and the webbing 10 forms a shoulder belt 13 along the outer upper-inferior lower diagonal between the guide ring and the first tongue 30, which can be obliquely bound in front of the passenger's chest from the passenger's neck to the waist when the passenger wears the safety belt 100.

[0028] As shown in Figure 1 and Figure 2 , the safety belt 100 of the present disclosure further comprises a tightening belt 20. The tightening belt 20 comprises a first end 21 and a second end 22, and the first end 21 of the tightening belt 20 is fixedly connected to the shoulder belt 13, more specifically, the first end 21 of the tightening belt 20 is fixedly connected to the middle part of the shoulder belt 13, so that after the passenger wears the safety belt 100, the fixed connection position of the first end 21 of the tightening belt 20 and the webbing 10 is located in front of the passenger's chest.

[0029] In the first embodiment, as shown in Figure 1 and Figure 2 , the tightening belt 20 is arranged separately from the webbing 10, and further, the material of the tightening belt 20 is the same as that of the webbing 10.

[0030] By using the same material for the tightening belt 20 as the webbing 10, the matching of the two in terms of strength, wear resistance and comfort is ensured, and the inconsistency in performance caused by material differences is avoided, thereby improving the reliability of the entire safety belt system and the wearing comfort of the passenger. At the same time, using the same material can simplify the production process and reduce the complexity and cost of the supply chain caused by the variety of materials. When maintaining and replacing, using replacement parts of the same material can reduce the variety of inventory, facilitate quick repair, and reduce maintenance cost and time.

[0031] The first end 21 of the tightening belt 20 can be fixedly connected to the middle part of the shoulder belt 13 by sewing. In this way, not only the firmness of the connection is ensured, but also sufficient flexibility is provided to allow appropriate adjustment when necessary. This connection method is more durable than adhesion or mechanical fixation and can withstand multiple uses and potential collision loads.

[0032] In some embodiments, the second end 22 of the tightening belt 20 is movably mounted on the outer side of the vehicle seat 200 to change the length of the tightening belt 20. When the vehicle is in a collision or sudden stop, and the passenger's upper body has a forward lunge and downward curling action, the shoulder belt 13 is pulled away from the passenger's neck by the length-variable tightening belt 20, so as to eliminate or delay the possibility of interference between the shoulder belt 13 and the passenger's neck.

[0033] The second end 22 of the tension belt 20 can be mounted at an outer middle side of the vehicle seat 200 or at an outer lower side of the vehicle seat 200.

[0034] In the first embodiment of the present disclosure, as shown in Figure 1 the second end 22 of the tension belt 20 is mounted at an outer lower side of the vehicle seat 200, so that after the occupant wears the safety belt 100, the first end 21 of the tension belt 20 is located in front of the chest of the passenger, and the fixed connection position of the shoulder belt 13 is located at the armpit of the passenger, as shown in Figure 4 the second end 22 of the tension belt 20 is mounted at an outer lower side of the vehicle seat 200, so that after the occupant wears the safety belt 100, the first end 21 of the tension belt 20 is located in front of the chest of the passenger, and the fixed connection position of the shoulder belt 13 is located at the armpit of the passenger, as shown in

[0035] In this way, the tension belt 20 and the connection between the tension belt 20 and the shoulder belt 13 avoid the sensitive area of the neck, significantly reducing the risk of neck injury during a collision. In addition, when the passenger correctly wears the safety belt 100, the shoulder belt 13 and the tension belt 20 together form a generally inverted Y-shaped structure, and the shoulder belt 13 and the tension belt 20 between the first end 21 of the tension belt 20 and the first tongue 30 are distributed in a diagonal manner on the vehicle seat 200, especially on both sides of the passenger. This diagonal distribution structure can effectively disperse the impact force of the diagonal shoulder belt 13 and the diagonal tension belt 20 at the moment of a collision, significantly reducing the direct impact of the safety belt 100 on the passenger's body.

[0036] In the first embodiment, the safety belt system further comprises a second retractor 400, which is arranged at an outer lower side of the vehicle seat 200, and the second end 22 of the tension belt 20 is retracted in the second retractor 400. By retracting and releasing the second retractor 400, the length of the tension belt 20 can be changed. By changing the length of the tension belt 20, the position of the shoulder belt 13 relative to the neck of the occupant can be changed when the safety belt 100 is worn by passengers of different body types, avoiding interference between the shoulder belt 13 and the neck. In addition, when the vehicle collides, the second retractor 400 can instantaneously limit the length of the tension belt 20 or tighten the tension belt 20, so that the tension belt 20 changes the inclination angle of the shoulder belt 13, so that the shoulder belt 13 avoids interference with the neck.

[0037] In another embodiment, the second end 22 of the tightening belt 20 is movably mounted on the outer lower side of the vehicle seat 200 by means of the second tongue 40 and the second buckle. Specifically, the safety belt 100 can further include the second tongue 40 fixedly arranged at the second end 22 of the tightening belt 20, and the safety belt system further includes a lumbar pre-tensioner (PLP) including the second buckle and a steel wire rope connected to the end of the second buckle, the lumbar pre-tensioner being located on the outer lower side of the vehicle seat 200 (which can also be fixed on the frame), and the second buckle of the lumbar pre-tensioner being used for the second tongue 40 to be clamped into.

[0038] When the vehicle is in a collision, the lumbar pre-tensioner can instantaneously shorten the steel wire rope, thereby pulling the second end 22 of the tightening belt 20, further pulling the shoulder belt 13, and changing the connection position of the first end 21 of the tightening belt 20 and the shoulder belt 13, ultimately changing the inclination angle of the webbing 10, so that the shoulder belt 13 avoids interference with the neck.

[0039] Therefore, the safety belt 100 in the first embodiment not only can effectively fix the passenger and reduce the body displacement, but also can instantaneously adjust the inclination angle of the shoulder belt 13, ensure that the shoulder belt 13 avoids the neck, and avoid direct contact between the shoulder belt 13 and the neck during the collision, thereby greatly reducing the probability of neck injury.

[0040] Further, in the first embodiment, the fixed end 12 of the webbing 10 is fixed on the outer lower side of the vehicle seat 200 by passing through the guide ring 600 and the first tongue 30, and when the passenger wears the safety belt 100, the first buckle 500 and the fixed end 12 define the waist belt 14 of the webbing 10 which spans from the inner lower side to the outer lower side. The waist belt 14 forms a stable loop around the passenger's waist, providing reliable restraint force to firmly fix the passenger on the seat. The waist belt 14 can effectively fix the lower body of the passenger, reduce the forward displacement of the body, and protect the passenger from injury.

[0041] In the second embodiment, as shown in Figure 2 the fixed end 12 of the webbing 10 is no longer directly fixed on the outer lower side of the vehicle seat 200 after passing through the guide ring 600 and the first tongue 30, but is directly fixed and connected between the retraction end 11 of the webbing 10 and the first tongue 30, i.e. the fixed end 12 of the webbing 10 is directly fixed on the body of the webbing 10, especially fixed and connected at the middle part of the shoulder belt 13, so that the webbing 10 itself forms a loop structure 15, and the fixed end 12 of the webbing 10 can be fixed and connected at the middle part of the shoulder belt 13 by sewing, ensuring the firmness and reliability of the connection.

[0042] Further, the safety belt 100 further comprises a second tongue 40, which can be located downstream of the first tongue 30, and both the first tongue 30 and the second tongue 40 are sleeved in the loop structure 15 formed by the belt 10. The safety belt system further comprises a lap pre-tensioner (PLP for short), which comprises a second buckle and a steel wire rope connected to the end of the second buckle, and the lap pre-tensioner is located on the outer lower side of the vehicle seat 200 (which can also be fixed on the vehicle frame), and the second buckle of the lap pre-tensioner is used for the second tongue 40 to be clamped into.

[0043] Therefore, when the occupant wears the safety belt 100, the first tongue 30 can be clamped into the first buckle 500 located on the inner lower side of the vehicle seat 200, and the second tongue 40 can be clamped into the second buckle (not shown in the figure) located on the outer lower side of the vehicle seat 200. When the passenger wears the safety belt 100, the first tongue 30, the second tongue 40 and the connection between the fixed end 12 and the shoulder belt 13 pull the loop structure 15 into a triangular loop structure 15, and the entire belt 10 forms a generally inverted Y-shaped structure. At this time, the belt 10 between the fixed end 12 and the second tongue 40 can be defined as a tightening belt 20, the fixed end 12 can be a first end 21 of the tightening belt 20, and the second tongue 40 can be a second end 22 of the tightening belt 20. The first tongue 30 and the second tongue 40 can be defined as a transverse lap belt 14.

[0044] Therefore, the first tongue 30 and the second tongue 40 are clamped into the first buckle 500 and the second buckle on both sides of the vehicle seat 200, respectively, so that the tightening belt 20 formed by the belt 10 itself and the shoulder belt 13 between the fixed end 12 and the first tongue 30 can also be distributed on both sides of the passenger in a diagonal layout.

[0045] At the moment of vehicle collision, the lap pre-tensioner located on the outer lower side of the vehicle seat 200 can instantaneously shorten the steel wire rope, thereby pulling the second end 22 of the second tongue 40, further pulling the shoulder belt 13, changing the connection position of the connection between the first end 21 of the tightening belt 20 and the shoulder belt 13, and finally changing the inclination angle of the belt 10, so that the shoulder belt 13 avoids interference with the neck.

[0046] It should be noted that in the second embodiment, since the fixed end 12 of the belt 10 is fixed on the belt 10 body to form a loop structure 15, the length of the loop structure 15 is fixed, and since the first tongue 30 and the second tongue 40 are not fixed on the belt 10, but can move along the belt 10, therefore, after the lap pre-tensioner pulls the second tongue 40, the second tongue 40 can slide along the belt 10, thereby changing the length of the tightening belt 20, the length of the lap belt 14 and the length between the fixed end 12 and the first tongue 30.

[0047] The movability of the ring structure 15 and the first and second locking tongues 30 and 40 located on the ring structure 15 enables the seat belt system to better adapt to the body shape and sitting posture of different passengers for adaptive adjustment, ensuring that the tensioned shoulder belt 13 is away from the neck, and not only ensuring that the seat belt 100 is neither too tight nor too loose, but also ensuring that a more comfortable feeling can be provided when worn for a long time.

[0048] When a collision occurs, the seat belt system can be quickly tightened, effectively dispersing the impact force by changing the length of the tensioning belt 20 and the waist belt 14, reducing the direct impact on the passenger's body, especially the protection of the neck and shoulders. The dynamic adjustment capability significantly improves the protection effect of the seat belt 100 at the moment of collision.

[0049] Based on the same inventive concept, the disclosure provides a vehicle seat 200. The specific manner of the functions implemented in the vehicle seat 200 in the above-mentioned embodiments has been described in detail in the embodiments related to the seat belt 100 of the vehicle seat 200, and will not be described in detail here.

[0050] It can be further understood that the terms "first", "second", and the like are used to describe various structures, but these structures should not be limited to these terms. These terms are only used to distinguish structures of the same type from each other, and do not indicate a particular order or importance. In fact, the expressions "first", "second", and the like can be used interchangeably. For example, without departing from the scope of the disclosure, the first structure can also be referred to as the second structure, and similarly, the second structure can also be referred to as the first structure.

[0051] It can be further understood that the terms "center", "longitudinal", "transverse", "front", "rear", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation.

[0052] Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure as disclosed herein. This application is intended to cover any variations, uses or adaptive changes of the disclosure that follow the general principles of the disclosure and include common knowledge or conventional technical means in the art not disclosed in the disclosure. The specification and examples are only considered as exemplary, and the true scope and spirit of the disclosure are indicated by the following claims.

[0053] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A vehicle seat belt (100), characterized in that, include: The webbing (10) has a winding end (11) which is wound around a first winding device (300) on the outside of the vehicle seat (200). The webbing (10) is provided with a first locking tongue (30) which is used to engage with a first latch (500) on the lower inside of the vehicle seat (200). A tensioning strap (20) is provided, the first end (21) of which is fixedly connected between the winding end (11) of the webbing (10) and the first locking tongue (30), and the second end (22) of which is movably mounted on the outside of the vehicle seat (200) to change the length of the tensioning strap (20).

2. The vehicle seat belt (100) according to claim 1, characterized in that, The second end (22) of the tensioning strap (20) is wound into a second retractor (400) on the lower side of the vehicle seat (200).

3. The vehicle seat belt (100) according to claim 1, characterized in that, A second latch (40) is provided at the second end (22) of the tension band (20). The second latch (40) is used to engage with the second buckle located on the lower side of the vehicle seat (200). By shortening the steel wire rope connected to the second buckle, the second end (22) of the tension band (20) can be made movable and the tilt angle of the webbing (10) can be changed.

4. The vehicle seat belt (100) according to claim 2 or 3, characterized in that, The tensioning band (20) and the webbing (10) are separate components, and the material of the tensioning band (20) is the same as that of the webbing (10).

5. The vehicle seat belt (100) according to claim 2 or 3, characterized in that, The webbing (10) also has a fixing end (12) fixed to the outer lower side of the vehicle seat (200), and the first buckle (500) and the fixing end (12) define a waist belt (14) that crosses the webbing (10).

6. The vehicle seat belt (100) according to claim 1, characterized in that, The webbing (10) also has a fixed end (12), which can be fixedly connected between the take-up end (11) of the webbing (10) and the first locking tongue (30). The webbing (10) is further provided with a second locking tongue (40) between the first locking tongue (30) and the fixed end (12). The second locking tongue (40) is used to engage with the second buckle located on the lower outer side of the vehicle seat (200). The fixed end (12) and the second locking tongue (40) define the tension band (20). The fixed end (12) is the first end (21) of the tension band (20), and the second locking tongue (40) is the second end (22) of the tension band (20).

7. The vehicle seat belt (100) according to claim 6, characterized in that, The first latch (30) and the second latch (40) are defined as the waistband (14) that crosses the webbing (10).

8. The vehicle seat belt (100) according to any one of claims 2, 3 or 6, characterized in that, The first end (21) of the tensioning band (20) is fixedly connected to the webbing (10) by sewing.

9. The vehicle seat belt (100) according to claim 1, characterized in that, The webbing (10) is also provided with a guide ring, which is located on the upper outer side of the vehicle seat (200). The guide ring and the first locking tongue (30) define the shoulder strap of the webbing (10). The first end (21) of the tensioning band (20) can be fixedly connected to the middle of the shoulder strap.

10. The vehicle seat belt (100) according to claim 1, characterized in that, After the passenger wears the seat belt (100), the first end (21) of the tension strap (20) is fixedly connected to the webbing (10) in front of the passenger's chest, and the second end (22) of the tension strap (20) passes under the passenger's armpit and is movably connected to the outside of the vehicle seat (200), so that the tension strap (20) is located in front of the passenger's chest in a diagonal manner.

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