Safety belt device for a vehicle and vehicle

Abstract

The invention relates to a safety belt device (2) for an occupant (1) on a vehicle seat in a vehicle, comprising two belt straps (6), each comprising a shoulder belt (S) and a lap belt section (B), wherein a buckle tongue part (10) is arranged on each belt strap (6), the buckle tongue parts (10) corresponding with each other and, in the coupled state, being insertable into a buckle (9) arranged on a safety element (8). According to the invention, it is provided that - a belt deflection element (3) is arranged in the area of ​​a shoulder belt (S) of the respective belt webbing (6), wherein the respective belt webbing (6) is deflected to form the lap belt section (B) by means of the respective belt deflection element (3) in the direction of a further belt deflection element (7) with a vehicle-fixed end fitting, and - each belt strap (6) is assigned a positioning element (4), one end (4.1) of which is coupled to the belt guide element (3) and the other end (4.2) of which is coupled to a belt buckle tongue part (10). The invention further relates to a vehicle with such a safety belt device (2).

Description

[0001] The invention relates to a safety belt device for an occupant on a vehicle seat in a vehicle, comprising two belt straps, each including a shoulder belt and lap belt section, wherein a buckle tongue is arranged on each belt strap, the buckle tongues corresponding to one another and, in the coupled state, being insertable into a buckle arranged on a safety element. The invention further relates to a vehicle with a safety belt device.

[0002] From DE 27 10 591 A1, a vehicle safety belt is described, comprising two shoulder belt sections anchored above and behind the upper part of the backrest and on or beside the seat, and a lap belt section that can be released by means of a buckle and tongue, anchored in the lower area of ​​the seat on both sides of it. The lap and shoulder belts are connected to each other above their lower anchor points by guide elements located in the area of ​​the contact edge between the seat cushion and the backrest.

[0003] Furthermore, EP 1 623 891 A2 describes a child car seat with a harness system. The child car seat consists of a seat base, a backrest, and harnesses that can be connected to a safety element to secure a child in the car seat. A harness or the safety element has a spring element by means of which the harness or the safety element is moved against spring force from a first position, in which a shoulder harness and the safety element are separated, to a second position, in which the shoulder harness and the safety element are connected.

[0004] The invention is based on the objective of providing a novel safety belt device for a vehicle and a vehicle with a safety belt device.

[0005] The problem is solved according to the invention by a safety belt device which has the features specified in claim 1, and by a vehicle which has the features specified in claim 10.

[0006] Advantageous embodiments of the invention are the subject of the dependent claims.

[0007] A safety belt device for an occupant on a vehicle seat in a vehicle comprises two webbing straps, each comprising a shoulder strap and a lap belt section, wherein a buckle tongue is arranged on each webbing strap, the buckle tongues corresponding to each other and, in the coupled state, being insertable into a buckle arranged on a safety element. According to the invention, it is provided that - a belt deflection element is arranged in the area of ​​a shoulder belt of the respective webbing, wherein the respective webbing is deflected towards a further belt deflection element with a vehicle-fixed end fitting to form the lap belt section by means of the respective belt deflection element, and - each webbing strap is assigned a positioning element, one end of which is coupled to the belt deflection element and the other end of which is coupled to a belt buckle tongue part.

[0008] With a safety belt system designed in this way, the occupant is secured to the vehicle body via at least four attachment points when the safety belt is fastened. This ensures that the occupant, particularly in the event of a collision, participates in the vehicle's acceleration, i.e., overall deceleration, relatively early on. The safety belt system fixes the occupant to the vehicle seat, thus largely preventing any relative movement between the occupant and the vehicle seat, thereby optimizing the occupant's protection against injury in the event of a collision.

[0009] The safety belt device allows for relatively simple and error-free operation when putting on and taking off, since in particular there are only two straps and the positioning of the shoulder straps relative to the lap belt sections and thus to the lap belt is carried out by means of the positioning elements.

[0010] The safety element essentially eliminates the risk of so-called submarining, as it runs between the occupant's legs and largely prevents the occupant from sliding under the lap belt.

[0011] In one embodiment, each belt guide element has a winding and unwinding device coupled to one end of the positioning element for changing the length of the positioning element. Specifically, when the seat belt device is opened, the length of the positioning elements is increased by means of the winding and unwinding device, whereas when the seat belt device is closed, particularly by inserting the buckle tongue parts into the buckle, the length is decreased, so that the shoulder and lap belts are optimally positioned against the occupant's body. This essentially automated length adjustment can be described in the broadest sense as "self-adjusting".

[0012] In another embodiment of the safety belt device, each belt deflection element has a housing in which the retraction and winding mechanism of the respective positioning element is located. The housing, which in particular has an opening for the positioning element, conceals the retraction and winding mechanism of the positioning element, thus making it invisible and largely protecting it from dirt and potential damage.

[0013] In a further development, the positioning element is designed as a positioning strap with a predetermined flexibility, ensuring that even when the seatbelt is fastened and closed, the positioning strap lies as close as possible to the occupant's body and therefore does not protrude or interfere with the occupant's movements. This also largely eliminates the risk of the occupant getting caught on the positioning strap.

[0014] In one possible design, the respective buckle tongue is attached to one end of the respective webbing. This means that the buckle tongue forms one end of the webbing, thus defining and predefining its position, preventing it from moving along the webbing.

[0015] In another version of the seat belt device, a further end of each webbing is directly or indirectly connected to a belt retractor. This allows the webbing to lie relatively close to the occupant's body when the seat belt is closed, thus optimizing restraint and securing. If the occupant leans forward towards the front of the vehicle, for example to retrieve something from or place it in the glove compartment, the extension of the webbing is increased to provide the occupant with the necessary freedom of movement.

[0016] Furthermore, in one design, the ends of the seat belts are connected to each other on the back of the vehicle seat, and a common section of the belt is operatively connected to the belt retractor. Because the two belts are joined and coupled to the retractor via a common section, only one retractor is required, thus reducing the number of seat belt assemblies. The single retractor allows the belt extension length to be adjusted according to the occupant's body dimensions.

[0017] In another possible embodiment, the seatbelt retractor has a tensioning function to tighten the seatbelt straps, ensuring that the straps lie taut against the occupant's body and reducing slack in both straps. This allows the occupant to participate in the vehicle's overall deceleration relatively early, particularly in the event of a collision. This optimizes occupant protection against injury. In particular, the tensioning function of the seatbelt straps is reversible.

[0018] In a possible further development of the safety belt device, an end of the safety element opposite the belt buckle is attached to the vehicle seat and / or a vehicle component at least by frictional connection, whereby the occupant, when the safety belt device is fastened and closed, is connected to the vehicle body via the safety element as an attachment point of the safety belt device.

[0019] Furthermore, the invention relates to a vehicle with a safety belt device for an occupant on a vehicle seat, comprising two belt straps, each including a shoulder belt and lap belt section, and a buckle tongue part arranged on each belt strap, wherein the buckle tongue parts correspond to each other and, in the coupled state, can be inserted into a belt buckle arranged on a safety element. According to the invention, it is provided that - a belt deflection element is arranged in the area of ​​a shoulder strap of the respective webbing, wherein the respective webbing is deflected towards an end fitting with a further belt deflection element to form the lap belt section by means of the respective belt deflection element and - each webbing strap is assigned a positioning element, one end of which is coupled to the belt deflection element and the other end of which is coupled to a belt buckle tongue part.

[0020] The seat belt system, when fastened, secures the occupant to the vehicle body via at least four attachment points. This ensures that, particularly in the event of a collision, the occupant experiences the vehicle's deceleration, especially its overall deceleration, relatively early on. The seat belt system fixes the occupant to the vehicle seat, thus largely preventing any relative movement between the occupant and the seat.

[0021] Embodiments of the invention are explained in more detail below with reference to drawings.

[0022] This shows: Fig. 1 schematically depicts an occupant with a safety belt device in the closed position, Fig. 2 schematically the occupant with the safety belt device in the open position, Fig. 3 schematically a view of a belt deflection element with a positioning element and Fig. 4 schematically another view of the belt deflection element with the positioning element and a winding and unwinding device.

[0023] Corresponding parts are marked with the same reference symbols in all figures.

[0024] Fig. Figure 1 shows, in an exemplary and highly simplified manner, an occupant 1 with a semi-transparent safety belt device 2 in the fastened and closed state, wherein Fig. Figure 2 shows the occupant 1 with the safety belt device 2 in the open position. Specifically, the safety belt device 2 is associated with a vehicle seat (not shown) on which the occupant 1 is seated, in order to optimize the protection of the occupant 1, who is secured to the vehicle seat by means of the safety belt device 2 and connected to the vehicle in which the vehicle seat is located. By securing and connecting the occupant 1 to the vehicle seat, it is ensured that, in the event of a collision, the occupant 1 participates in the overall deceleration of the vehicle relatively early.

[0025] Fig. Figure 3 shows a view of a belt deflection element 3 with a section-by-section positioning element 4 of the safety belt device 2 and in Fig. Figure 4 shows another view of the belt deflection element 3 with a winding and rewinding device 5 of the positioning element 4.

[0026] The safety belt device 2 comprises two webbing straps 6, a belt retractor (not shown) with a tensioning function, one belt guide element 3 for each webbing strap 6, another belt guide element 7 for each webbing strap 6, which is designed both to guide a webbing strap 6 and as a belt end fitting for attachment to a vehicle component (not shown), a safety element 8 with a buckle 9, and a buckle tongue part 10 arranged at one end 6.1 of each webbing strap 6. When the safety belt device 2 is fastened and closed, the safety element 8 runs between the legs of the occupant 1 sitting on the vehicle seat.

[0027] The ends of both belt straps 6, opposite each end 6.1 of the belt strap 6 where the buckle tongue 10 is located (not shown), are joined at the rear of the vehicle seat and connected, for example, as a single belt section to the belt retractor, in particular by means of a functional connection. The belt retractor, as is customary, serves to extend or reduce the extension length of the two belt straps 6, particularly depending on the body dimensions of the occupant 1. The belt retractor has a tensioning function, which is implemented, for example, reversibly by means of a controllable electric motor. In particular, the tensioning function is activated in the event of a vehicle collision to reduce the belt slack and ensure that the respective belt strap 6 lies taut against the body of the occupant 1.

[0028] The two webbing straps 6 each comprise a shoulder strap S and a lap belt section B, wherein a continuous lap belt of the safety belt device 2 is formed by means of the lap belt sections B when the corresponding buckle tongue parts 10 are inserted into the buckle 9 in the assembled state and are securely held in it.

[0029] The two lap belt sections B, which form the lap belt when the safety belt device 2 is fastened and closed, and are accordingly positioned in the pelvic area of ​​the occupant 1, are formed by means of belt guide elements 3 and further belt guide elements 7, which are positioned accordingly with respect to the course of the belts 6. For this purpose, a belt section of the respective belt 6 is deflected by means of belt guide element 3 towards the further belt guide element 7, which also serves as a belt end fitting. By means of the further belt guide element 7, the respective belt 6 is deflected and forms the lap belt section B.

[0030] Positioning elements 4, designed in particular as positioning straps, are provided for positioning the respective shoulder strap S relative to the interconnected lap belt sections B. One end 4.1 of the respective positioning element 4 is connected to the retraction and winding device 5 of the respective positioning element 4, which is integrated into the belt deflection element 3, and another end 4.2 is coupled to the buckle tongue part 10, which is arranged at one end 6.1 of the respective webbing 6.

[0031] The length of the positioning element 4 can be adjusted by means of the retraction and winding device 5 of the respective belt guide element 3. For example, the respective retraction and winding device 5 of the belt guide element 3 comprises a mechanism and / or an electric drive unit, which is connected to a belt buckle sensor (not shown) via a signal. When the seat belt device 2 is closed by inserting the assembled buckle tongue parts 10 into the buckle 9, the length of the respective positioning element 4 is reduced to ensure that the shoulder belt S, in particular, is tightened and thus fits relatively snugly against the body of the occupant 1.

[0032] When the safety belt device 2 is opened, in particular by releasing the two belt buckle tongue parts 10 by actuating a release mechanism of the belt buckle 9, the length of the positioning elements 4 is increased by means of the respective unwinding and rewinding device 5, so that the safety belt device 2, in particular the respective shoulder straps S, can be laid down.

[0033] In particular, by limiting the length of the positioning element 4 using the winding and retracting device 5, it is ensured that the desired positioning of the webbing 6, especially the shoulder strap S, relative to the body of the occupant 1 is maintained. The winding and retracting device 5 is located in a Fig. 3 and Fig.4. The housing 3.1 of the belt deflection element 3 is shown in an exemplary and highly simplified manner, and has an opening (not shown in detail) from which the positioning element 4, in the form of the positioning belt, is led out of the housing 3.1.

[0034] In the installed state of the safety belt device 2, the winding and rewinding device 5 of the positioning element 4, which is integrated into the belt deflection element 3, is already integrated into the housing 3.1 of the belt deflection element 3 and has the opening from which the positioning element 4 protrudes at least partially.

[0035] By means of the safety belt device 2 and in particular by means of the positioning elements 4, the length of which is adjustable by means of the winding and unwinding device 5, the safety belt device 2 is essentially self-adjusting, whereby self-adjustment takes place in particular after the assembled belt buckle tongue parts 10 are inserted into the belt buckle 9.

[0036] In one possible embodiment, the safety element 8 is band-shaped and made of a fabric, in particular a tear-resistant fabric, wherein an end of the safety element 8 opposite the belt buckle 9 is attached to the vehicle seat and / or a vehicle component, in particular a vehicle body shell, at least by frictional engagement. Reference symbol list 1 occupant 2 safety belt device 3 belt deflection element 3.1 Housing 4 Positioning element 4.1 End 4.2 further end 5. Winding and unwinding device 6 webbing 6.1 End 7 additional belt deflection element 8 safety element 9 Seatbelt buckle 10 Seatbelt buckle tongue part B pelvic belt section S shoulder strap

Claims

[1] Safety belt device (2) for an occupant (1) on a vehicle seat in a vehicle with two belt straps (6), each comprising a shoulder belt (S) and lap belt section (B), wherein a belt buckle tongue part (10) is arranged on a respective belt strap (6), wherein the belt buckle tongue parts (10) correspond to one another and, when coupled to one another, can be inserted into a belt buckle (9) arranged on a safety element (8), characterized by , that - a belt deflection element (3) is arranged in the region of a shoulder belt (S) of the respective belt strap (6), wherein the respective belt strap (6) is deflected by means of the respective belt deflection element (3) in the direction of a further belt deflection element (7) with an end fitting arranged fixed to the vehicle in order to form the lap belt section (B), and - each belt strap (6) is assigned a positioning element (4), one end (4.1) of which is coupled to the belt deflection element (3) and the other end (4.2) of which is coupled to a belt buckle tongue part (10). [2] Safety belt device (2) according to claim 1, characterized by that the respective belt deflection element (3) has a winding and unwinding device (5) coupled to one end (4.1) of the positioning element (4) for changing the length of the positioning element (4). [3] Safety belt device (2) according to claim 2, characterized by that the respective belt deflection element (3) has a housing (3.1) in which the unwinding and winding device (5) of the respective positioning element (4) is arranged. [4] Safety belt device (2) according to one of the preceding claims, characterized by that the positioning element (4) is designed as a positioning band. [5] Safety belt device (2) according to one of the preceding claims, characterized by that the respective belt buckle tongue part (10) is attached to one end (6.1) of the respective belt strap (6). [6] Safety belt device (2) according to one of the preceding claims, characterized by that a further end of the respective belt strap (6) is directly or indirectly coupled to a belt retractor. [7] Safety belt device (2) according to claim 6, characterized by that the further ends of the belt straps (6) are connected to one another at a rear side of the vehicle seat and a common belt strap section is operatively connected to the belt retractor. [8] Safety belt device (2) according to claim 6 or 7, characterized by that the belt retractor has a penalty function for tightening the belt straps (6). [9] Safety belt device (2) according to one of the preceding claims, characterized bythat an end of the safety element (8) opposite the belt buckle (9) is fastened to the vehicle seat and / or a vehicle component at least in a force-fitting manner. [10] Vehicle with a safety belt device (2) according to one of the preceding claims.

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