Restraint system for a seat in a motor vehicle

Abstract

Restraint device for a seat (1) of a motor vehicle, comprising an airbag (6) which is movable from a stowed position to a restraint position, and comprising at least one catch element (9) which is connected at one end (35) to the airbag (6) and by means of which a movement of the airbag (6) from the stowed position to the restraint position can be influenced, characterized in that the at least one catch element (9) is connected to a seat belt assembly (16) of the seat (1), wherein a catch strap (13, 14) of the catch element (9) is provided.which is connected to a safety belt (23) of the safety belt assembly (16) by means of a tear seam (43) or similar predetermined breaking element and / or the catch element (9) extends into a belt buckle (17) of the safety belt assembly (16) and / or the catch element (9) is connected to the belt buckle (17) when the airbag (6) is in the stowed position and can be separated from the belt buckle (17) when the airbag (6) is moved into the restraint position.

Description

[0001] The invention relates to a restraint device for a seat in a motor vehicle according to the preamble of claim 1.

[0002] Such restraint systems are already used in a variety of designs in motor vehicles. These systems typically include an airbag that can be moved from a stowed position to a deployed position by the introduction of gas. To achieve controlled movement from the stowed position to the deployed position, and consequently to hold the deployed airbag in a defined position within the deployed position, it is already known to use retaining elements or tensioning elements to essentially force the movement and positioning of the airbag. To date, the retaining element is usually connected at one end to the airbag and at the other end to an element of the seat support within a corresponding cushion of the vehicle seat or seating area.When the restraint system is opened, for example, the airbag tears open a seam in the upholstery cover, thereby releasing the retaining strap.

[0003] However, the problem here is that there may not be enough tearing force available to open a corresponding tear seam using the airbag, or that not every desired movement or restraint position of the airbag can be maintained and achieved using such a retaining strap guided through the torn tear seam.

[0004] The object of the present invention is therefore to create a restraint device of the type mentioned at the outset, by means of which an airbag moved from the stow position to the release position can be moved or held in an improved manner by means of the catching element.

[0005] This problem is solved according to the invention by a retention device having the features of claim 1. Advantageous embodiments of the invention are specified in the dependent claims.

[0006] The restraint device according to the invention comprises at least one airbag which can be moved from a stowage position to a restraint position, and which is connected at one end to at least one catching element of the restraint device by means of which the movement of the airbag from the stowage position to the restraint position can be influenced or the airbag can be held in the restraint position.

[0007] To create a restraint system by which the movement of the airbag from the stowed position to the restraint position can be better controlled and steered by the arresting element, or by which the airbag can be positioned and held in a suitably appropriate restraint position in an improved manner, the invention provides that the at least one arresting element is connected to a seat belt assembly of the seat. In contrast to the prior art, in which such arresting elements are integrated within the respective cushion of the corresponding seat, either within a vehicle seat or a bench seat or the like, the invention provides that the at least one arresting element extends at least outside the cushion of the corresponding seat and is connected to the seat belt assembly of that seat.This allows the restraint element, with its end of the belt facing away from the end connected to the airbag, to be positioned in a significantly more favorable location than before. This improves the control of the airbag's movement from the stowed position to the deployed position, and also helps to hold the airbag in the desired deployment position after it has fully inflated. Thus, for example, an airbag can be deployed in the shortest possible path at the best possible angle, without negatively affecting any movement of the occupant during an accident.

[0008] In an alternative, and possibly additional, aspect, a restraint device according to the preamble of claim 1 is provided, which, according to the invention, comprises at least one catching element for improved control of the airbag from the stowed position to the restraint position or for improved positioning of the airbag in the restraint position. This catching element is arranged at least partially behind a cover on the outside of a seat cushion. Such a catching element, arranged outside the seat cushion or behind a cover held thereon, also allows for a more favorable position of the end of the catching element opposite the end located on the side of the airbag, in order to, for example, deploy the airbag in the shortest possible way and at least approximately the best angle.

[0009] In a further embodiment of the invention, it has proven advantageous to provide a release mechanism by means of which the catch element can be at least partially detached from the seat belt assembly. For example, in the event of airbag deployment, it is thus easily possible to partially detach the catch element from the seat belt assembly, allowing the catch element to move into an optimal position and angle relative to the airbag mounting.

[0010] In a further embodiment of the invention, it has proven advantageous to provide a retaining strap for the retaining element, which is connected to the seat belt of the seat belt assembly by means of a tear seam or similar predetermined breaking element. This also allows the retaining element to be partially detached from the seat belt, for example, in the event of airbag deployment, so that the retaining strap can position itself in an optimal position and at an optimal angle.

[0011] Another advantageous embodiment of the invention provides that the catch element extends into a buckle of the seat belt assembly. This allows for the creation of a catch element that extends to the side of the seat opposite the airbag, thereby creating a catch element that can be positioned in an optimal position or at an optimal angle in the event of airbag deployment.

[0012] In this context, it has proven advantageous if the catch element is connected to the seatbelt buckle when the airbag is in its stowed position and can be detached from the buckle when the airbag is moved into its restraint position. By detaching it from the buckle, a catch element can be created that, for example, extends from one end connected to the airbag to the opposite side of the seat and can be optimally positioned and arranged after the airbag is deployed.

[0013] Another advantageous embodiment of the invention provides that a retaining strap of the retaining element is provided, which runs in the area of ​​a lap belt section of the safety belt of the seat belt assembly. This allows the airbag to be positively controlled and positioned in a lower area.

[0014] In a further embodiment of the invention, it has proven advantageous to provide a retaining strap for the retaining element, which runs in the area of ​​a chest strap section of the safety belt of the seat belt assembly. This allows the airbag to be guided and held particularly favorably in an upper area during its deployment.

[0015] Another advantageous embodiment of the invention is characterized in that the airbag is arranged on the side of the seat facing the seatbelt buckle or on the side of the seat facing away from the seatbelt buckle. Depending on the intended use, it is therefore an advantage of the present invention that the airbag can be selectively installed either on the side of the seatbelt buckle or on the side of the seat facing away from it. Both arrangements are possible by means of the corresponding arrangement of the arresting element.

[0016] Finally, an embodiment has proven advantageous in which the arresting element comprises a runner element that is movably connected to the seat belt of the seat belt assembly and which can be moved along the seat belt when the airbag moves from the stowed position to the restraint position. This movement can then be stopped after the runner element reaches an end position, for example by means of a brake, the belt buckle, or by a corresponding geometric shape of the seat belt.

[0017] Further features of the invention will become apparent from the claims, the figures, and the description of the figures. The features and combinations of features mentioned above in the description, as well as the features and combinations of features mentioned below in the description of the figures and / or shown in the figures alone, are not only usable in the combinations specified, but also in other combinations or on their own.

[0018] The invention will now be explained in more detail with reference to a preferred embodiment and the drawings. The drawings show: Fig. 1 A schematic perspective view of a seat of a motor vehicle with a restraint device according to the invention, in which an airbag can be influenced by means of catching elements during movement from the stowed position to the restraint position by means of a catching element, which are arranged at least partially on an outside of a cover of a cushion of the seat behind a panel, Fig. 2 a schematic perspective view of the seat with the restraint system analogous to Fig. 1. With the cover omitted, the arrangement of the retaining strap and the airbag is visible on the outside of the seat cushion. Fig. 3. A partial and schematic sectional view through the padding of a seat cushion of the seat according to the Fig. 1 and Fig. 2, wherein the lateral arrangement of the retaining strap and the aperture is recognizable, Fig. 4a, Fig. 4b respective schematic perspective views of a seat of the motor vehicle with a restraint device according to a second embodiment, wherein on the left the restraint device is shown with an airbag in its stow position and on the right with an airbag in its restraint position, Fig. 5a-c respective schematic representations of the restraint device according to the second embodiment shown in the previous two illustrations, wherein Fig. 5a the restraint device when the buckle of a safety belt is open, Fig. 5b the restraint device when the seat belt buckle is closed, the seat belt device and Fig. 5c shows the restraint device when the seat belt buckle is closed and after the airbag has been moved from its stowed position to its restraint position. Fig. 6a, Fig. 6b respective schematic perspective views of a seat of the motor vehicle with a restraint device according to a third embodiment, wherein on the left the restraint device is shown with an airbag in its stow position and on the right with an airbag in its restraint position, Fig. 7a-c respective schematic representations of the restraint device according to the third embodiment shown in the previous two illustrations, wherein Fig. 7a the restraint device when the buckle of a safety belt is open, Fig. 7b the restraint device when the seat belt buckle is closed, the seat belt device and Fig. 7c shows the restraint device when the seat belt buckle is closed and after the airbag has been moved from its stowed position to its restraint position. Fig. 8a, Fig. 8b respective schematic perspective views of a seat of the motor vehicle with a restraint device according to a fourth embodiment, wherein on the left the restraint device is shown with an airbag in its stow position and on the right with an airbag in its restraint position, Fig. 9a-c respective schematic representations of the restraint device according to the fourth embodiment shown in the previous two illustrations, wherein Fig. 9a the restraint device when the buckle of a safety belt is open, Fig. 9b the restraint device when the seat belt buckle is closed, the seat belt device and Fig. 9c shows the restraint device when the seat belt buckle is closed and after the airbag has been moved from its stowed position to its restraint position. Fig. 10a, Fig. 10b respective schematic perspective views of a seat of the motor vehicle with a restraint device according to a fifth embodiment, wherein on the left the restraint device is shown with an airbag in its stow position and on the right with an airbag in its restraint position, Fig. 11a-c respective schematic representations of the restraint device according to the fifth embodiment shown in the previous two illustrations, wherein Fig. 11 a the restraint device when the buckle of a safety belt is open, Fig. 11b the restraint device when the seat belt buckle is closed, the seat belt device and Fig. 11 c the restraint device with the seat belt buckle closed and after the airbag has been moved from its stowed position to its restraint position is shown, Fig. 12a-c respective schematic perspective views of a seat of the motor vehicle with a restraint device according to a sixth embodiment, wherein on the left the restraint device is shown with an airbag in its stow position and on the right with an airbag in its restraint position, Fig. 13a-c respective schematic representations of the restraint device according to the sixth embodiment shown in the previous two illustrations, wherein Fig. 13a the restraint device when the buckle of a safety belt is open, Fig. 13b the restraint device when the seat belt buckle is closed, the seat belt device and Fig. 13c shows the restraint device when the seat belt buckle is closed and after the airbag has been moved from its stowed position to its restraint position. Fig. 14a-c respective schematic perspective views of a seat of the motor vehicle with a restraint device according to a seventh embodiment, wherein on the left the restraint device is shown with an airbag in its stow position and on the right with an airbag in its restraint position, Fig. 15a-c respective schematic representations of the restraint device according to the seventh embodiment shown in the two previous illustrations, wherein Fig. 15a the restraint device when the buckle of a safety belt is open, Fig. 15b the restraint device when the seat belt buckle is closed, the seat belt device and Fig. 15c shows the restraint device when the seat belt buckle is closed and after the airbag has been moved from its stowed position to its restraint position. Fig. 16a, Fig. 16b respective schematic perspective views of a seat of the motor vehicle with a restraint device according to an eighth embodiment, wherein on the left the restraint device is shown with an airbag in its stow position and on the right with an airbag in its restraint position, Fig. 17a, Fig. 17b respective schematic representations of the restraint device according to the eighth embodiment shown in the two previous illustrations, wherein Fig. 17a the restraint device when the buckle of a safety belt is open, Fig. 17b the restraint device when the seat belt buckle is closed, the seat belt device and Fig. 17c shows the restraint device when the seat belt buckle is closed and after the airbag has been moved from its stowed position to its restraint position.

[0019] In the Fig. 1 and Fig. 2 is shown in a schematic perspective view as a seat. 1 depicted in a motor vehicle. This seat 1 It could be a single seat, but also a bench seat. The seat 1 includes a seat cushion part 2 and a backrest section 3 The headrest of the seat is not shown in this case. 1 Both the seat cushion part 2as well as the backrest part 3 Each has an unrecognizable support part, which is usually padded. 4 is equipped with a seat cover, for example made of leather or a fabric material.

[0020] From one of the seats 1 The associated restraint system is in Fig. 2 in particular an airbag 6 indicated which is located here in its unfolded stow position on the outside of a side panel 7 is located on the airbag. 6 Two locking elements close 8 , 9 on, from which the upper catching element extends 8 on the top side of the airbag 6 along an upper part of the side cheek 7 and from there diagonally to an upper narrow side 10 of the backrest part 3 extends there. The catching element is located there. 8 for example at an anchor point 11with the substructure of the backrest part 3 connected. The catching element 9 extends from one underside of the airbag 6 in a lower area of ​​the side cheek 7 of the backrest part 3 or the seat cushion part 2 In a front area of ​​the side panel 7 of the seat cushion part 2 is another anchor point 12 provided by means of which the catching element 9 on a support element of the seat cushion part 2 is fixed. The two locking elements 8 , 9 The essential components include a respective safety strap. 13 or 14 , which are achieved by means of respective profile parts 15 on the corresponding side cheek 7 are held.

[0021] The specific design and arrangement of the respective trapping elements is described in Fig. 3 symbolically indicated, which is a partial representation of the cushion 4 of the seat cushion part 2 shown in a corresponding sectional view along a cutting plane running in the vehicle's vertical direction or in the vehicle's transverse direction.

[0022] The profile strip 15 is located in the area of ​​a fastening seam. 16 with the respective side cheek 7 connected. Furthermore, it is connected to an otherwise undetectable safety belt system. 16 for the seat 1 a seatbelt buckle 17 shown, which is in the area of ​​a seatbelt buckle fastening 18 with a support part of the seat cushion part 12 is connected. Instead of the seatbelt buckle. 17 It would also be conceivable to combine one part of the seat belt with the seat cushion part. 2 to connect, namely when the seatbelt buckle is on the other side of the seat. 1is located.

[0023] Finally, considering the overall picture, Fig. 1 and Fig. 2. It is apparent that both the airbag 6 as well as the respective catching elements 8 , 9 with their respective apertures 19 are concealed, which are on one outside of the cover 5 of the cushion 4 of the corresponding seat 1 are arranged. In conjunction with Fig. 3. It can be seen that the respective profile strip 15 or the corresponding aperture 20 a firing channel 22 remains free or is formed, from which the respective catching element 8 , 9 or the respective corresponding tether 13 , 14 in the event of airbag movement 6 can exit from its stowed position into a restraint position.

[0024] It is evident that the external and concealed arrangement of the respective trapping elements 8 , 9 or the respective associated tethering strap 13 , 14 optimal forced control of the airbag movement 6 from the stow position to the restraint position, as well as optimal airbag retention. 6 can be achieved in the restraint position, since the arresting elements 8 , 9 or safety straps 13 , 14 not through the upholstery via the tear seams 5 must be routed through it or placed in optimal positions outside the seat cover. 5 can be arranged in the vehicle seat.

[0025] For mounting the respective safety elements 8 , 9 The respective profile part is easily selected. 15 on the side of the corresponding seat cover 5sewn on or otherwise attached, or fixed in the upholstery production. During assembly, one end of the retaining element can be 8 , 9 or tether strap 13 , 14 on the seat cushion part 2 or backrest part 3 to be attached. After that, the cover can be removed. 5 to be stretched over the seat. Then, for example, the respective safety strap is attached. 13 , 14 into the undercut of the profile element 15 threaded. This can involve cutouts in this profile element. 15 to facilitate threading and provide visual feedback on the specific positioning of each tether strap. 13 , 14 give. After the arrangement of the respective trapping elements according to the invention. 8 , 9 or the airbag 6 The respective apertures can then be adjusted. 20They are mounted in such a way that the restraint system is at least essentially imperceptible to the occupant.

[0026] In the Fig. 4a and Fig. 4b are analogous to the respective side views. Fig. 1 and Fig. 2 a seat 1 illustrated with a restraint device according to a second embodiment of the invention. Fig. 4a shows the restraint system when the airbag is in its stowed position. 6 , Fig. 4b the restraint system when the airbag is in the restraint position 6 .

[0027] In the present embodiment, a seat is 1 integrated safety belt system 16 shown which has a safety belt 23 includes. On the seatbelt 23 is a belt tongue 24 arranged, which are in the seatbelt buckle 17is plugged in. This means the seatbelt is 23 into a pelvic belt section 25 and a chest strap part 26 subdivided. The pelvic belt part 25 is on the seatbelt buckle 17 far side in the area of ​​a belt attachment 27 either attached to the vehicle seat or fixed at the top. The chest strap part 26 the seatbelt 26 is on the seatbelt buckle 17 The seatbelt is wound up on the opposite side by means of a belt retractor (not shown), which may also include a belt tensioner or the like in the usual manner. In this case, the belt retractor is integrated into the backrest section. 3 of the seat 1 integrated, however, it is also conceivable to position it outside the vehicle seat and to fix it during the initial construction phase.

[0028] In the area of ​​the side cheek 7 is analogous to the embodiment according to the Fig. 1 to Fig. 3. The airbag again 6 arranged here a catching element 8 provided for, which extends from the belt buckle 17 up to the chest strap part 26 or furthermore, extending to the belt tensioner. Essentially, the safety element is... 8 which in turn is formed by a tether 13 , which has one end attached to the airbag 6 is attached and extends into the chest strap part 26 or, if applicable, extends to the seatbelt pretensioner. The retaining strap 13 However, it can also end before the seatbelt tensioner.

[0029] In the area of ​​the seatbelt buckle 17 is the tether strap 13 or the catching element 8 It is interrupted in its formation and therefore also has a tongue. 32 and an associated castle 33 on, over which the tether 8can be divided into two parts, namely when the seatbelt buckle 17 is opened. For example, it is conceivable that the seatbelt buckle 17 to be designed as a double belt buckle and the buckle tongue or belt tongue 24 also as a double belt tongue, so that on the one hand the safety belt 23 with the seatbelt buckle 17 is connected and the respective two parts of the tether 18 also in the area of ​​the seatbelt buckle 17 are interconnected.

[0030] Will it happen now - as in Fig. 4b shown - to a movement of the airbag 6 from his in Fig. 4a shown stowage position in the in Fig. In the restraint position shown in 4b, the retaining strap is used. 13 in the area of ​​the seatbelt buckle 17 from this or also from the belt tongue 24 released, so that the retaining strap 13 or the catching element 8, to which the tether 13 belongs to the Fig. The position shown in 4b can be moved. The catch element is in this position. 8 or the tether 13 optimally arranged to protect the airbag 6 to hold in the desired restraint position.

[0031] In other words, the catching element 8 or the tether 13 optimal airbag movement 6 from the stowed position to the restraint position, or this movement is influenced, and thus also the airbag. 6 held in an optimal restraint position, as shown here. In the area of ​​the retaining strap. 13 This involves connecting the two parts of the safety strap. 13 shown which in the undeployed position of the airbag 6 with the seatbelt buckle 17 are connected. The two parts of the retaining strap 18are in the area of ​​the connection indicated by a schematic box 28 , which may, for example, include a lock part and a tongue part, connected to each other.

[0032] That part of the catching element 8 or the tether 13 as well as the airbag 6 , which are on the outside of the cover 5 on the side cheek 7 of the seat cushion part 2 and the backrest part 3 are arranged, can in turn be arranged according to the first embodiment by means of a corresponding aperture. 19 be concealed and arranged on the outside.

[0033] In the Fig. 5a to Fig. 5c are shown in the respective schematic diagrams as the respective positions of the restraint system, which are related to the Fig. 4a and Fig. As explained in section 4b, it will be shown again. Fig. 5a shows the restraint system when the seat belt is not closed. 16 , that is, in the state in which the belt tongue 24 not yet into the seatbelt buckle 17 It is plugged in. The strap attachment is also visible. 27 on the side of the pelvic belt part 25 as well as a schematic of the belt retractor 29 on the side of the chest strap part 26 In the present case, the tether strap 13 a separate reel 30 provided for. It is also apparent that the safety belt 23 assigned part 31 of the tether 13 is connected to this, with a belt tongue 24 the seatbelt 23 another tongue 32 for the upper part 31 of the tether 13 This is evident. How this is evident from Fig. 5b is recognizable as the belt tongue. 24 into the seatbelt buckle 17pluggable, and the tongue 32 of the part 31 of the tether 13 into a separate castle 33 , which is connected to the actual seatbelt buckle 17 is connected. The tongue 32 and the castle 33 , which in turn is connected to the lower part 34 of the tether 13 connected, thus form the already in Fig. 4b recognizable connection 28 of the two 31 and 34 of the tether 13 .

[0034] How now from Fig. 5c is recognizable, which indicates the opening of the airbag. 6 shows which one in the Fig. 5a and Fig. 5b in its stowed position and in Fig. 5c is shown in its restraint position, this connection 28 consisting of the tongue 32 and the castle 33 from the seatbelt buckle 17 released, so that the retaining strap 13 between the reel 30and the corresponding connection of one end 35 on the airbag 6 extends. The severing of the connection 28 of the tether 13 from the seatbelt buckle 17 This can be achieved, for example, by means of overload, pyrotechnic, or electromechanical unlocking. Thus, the seatbelt buckle remains in place. 17 with the belt tongue 24 connected while the connection 28 of the two 31 , 34 the retaining strap in the room together with the airbag 6 move. The roller or tensioner 30 ensures that the airbag 6 to where it should be and takes the strapless part of the tether. 30 up. In the Fig. 6a and Fig. 6b as well as in the Fig. 7a to Fig. 7c is a third embodiment of the restraint device analogous to the restraint device according to the Fig. 4a to Fig. 5c is shown. Therefore, only the essential differences will be discussed and the same reference symbols will be used.

[0035] The third embodiment includes a further catching element. 9 or related parts 36 , 37 to see which overall a tether strap 14 form, which starts from the belt attachment 27 of the pelvic belt section 25 up to the airbag 6 It runs. Accordingly, it is not just a tether strap that is present. 13 as provided in the second embodiment, which is located in the area of ​​the chest strap part 26 extends, but the second tether strap 14 , which is located in the area of ​​the pelvic belt part 25 extends. Also for both parts. 36 , 37 of the tether 14 is in the area of ​​the seatbelt buckle 17 another castle 38 held up, which with a tongue 39with the seatbelt fastened 23 works together to thereby combine the two parts 36 , 37 of the second, in the area of ​​the pelvic belt part 25 running tether 14 to connect them. This is particularly evident from the Fig. 7a to Fig. 7c schematically illustrates this. As in Fig. 7c indicated, the airbag 6 When moved into the restraint position, its movement and positioning are therefore not only determined by the retaining strap. 13 above, but also through the safety strap 14 The bottom is affected. The corresponding part is also involved. 37 of the tether 14 on his airbag 6 far end within a reel 40 recorded to also include this tether 14 to tighten accordingly. It is again evident that the connection 28 the safety straps 13 , 14 , which through the locks33 or 38 and through the tongues 32 or 39 are formed by the seatbelt buckle 17 and the belt tongue 24 are separate.

[0036] In the Fig. 8a to Fig. 9c are analogous to the Fig. 4a to Fig. Sections 5c and 6a to 7c show a fourth embodiment of the restraint device in which, unlike the second and third embodiments, only the retaining strap 14 in the area of ​​the pelvic belt part 25 is provided, but not the one in the area of ​​the chest strap part. 26 Regarding the functionality of the tether strap 14 Regarding the third embodiment, in connection with the Fig. 6a to Fig. 7c referred to, in which such a thing, in the area of ​​the pelvic belt part 25 running tether strap 14already in combination with the upper part, in the area of ​​the chest strap 26 running safety strap 13 has been described.

[0037] In the Fig. 10a to Fig. Section 11c describes a fifth embodiment of the restraint device, analogous to the illustrations of the second, third, and fourth embodiments. The differences between these embodiments will also be discussed below.

[0038] Firstly, this fifth embodiment differs from the second to fourth embodiments in that the airbag 6 on the seatbelt buckle 17 far side of the seat 1 is arranged. This in turn serves to guide and hold the airbag. 6 a tether 14 provided for, which starts from the airbag 6 in the area of ​​a release mechanism 41 with the pelvic belt part 25 the seatbelt 23is connected and extends from this release mechanism along the pelvic belt section. 25 runs to the seatbelt buckle 17 The tether 14 This can be achieved by using the existing belt tongue as a means of communication. 24 with the seatbelt buckle 17 be connected. Alternatively, a design as already explained in connection with the third and fourth embodiments would also be conceivable, i.e., by forming a separate connection. 28 respective parts of the tether 14 .

[0039] Will the airbag now 6 from his in Fig. 10a shown stowage position in the in Fig. If the restraint position shown in 10b is moved, the retaining strap will be separated. 14 from the pelvic belt part 25 the seatbelt 23 This is particularly true when considering the following: Fig. 11 b and Fig. 11c is schematically recognizable. It is also recognizable that in the area of ​​the tether strap 14 yet another rewinder 40 It is provided by means of which strap length of the safety strap 14 can be recorded. The tether 14 This occurs when the airbag is in the restraint position. 6 between this and the seatbelt buckle 17 If a two-part design of the retaining strap is used, 14 selected, in which the two parts are located in the area of ​​the belt tongue 24 and the seatbelt buckle 17 which are also connected to each other, the tether can 14 They can, of course, also end elsewhere. In the case of airbag deployment, the seatbelt tongue is involved. 24 and the seatbelt buckle 17 the seatbelt 23 from the tongue 39 and the castle 38 of the tether 14Separated. In this case, the respective buckles are also connected to each other until the airbag is deployed and are separated from each other in the event of deployment. This separation can be achieved by means of overload, pyrotechnic, or electromagnetic release. The seatbelt buckle 17 with the belt tongue 24 They are held firmly in place together, whereas the tether parts 36 , 37 and the tongue 39 , which connects 28 form, together in space with the airbag 6 move.

[0040] In the Fig. 12a to Fig. 13c are analogous to the Fig. 10a to Fig. 11c shows a sixth embodiment of the restraint device, which differs from the fifth embodiment essentially only in that the retaining strap 14 , which is located in the area of ​​the pelvic belt part 25 runs, not all the way to the seatbelt buckle 17It extends, but ends before that point. For example, there is a difference between the retaining strap and the tether. 14 and the pelvic belt part 25 A connecting seam is provided, which forms an anchorage. If now – as this is a summary of the Fig. 13b and Fig. 13c shows - the airbag 6 When moved from its stowed position to its retained position, the anchoring mechanism forms 42 the airbag 6 far side bearing point of the safety strap 14 , over which it is guided and held. By suitable positioning or suitable tearing of the tether. 14 from the seatbelt 23 The anchor point can therefore be 42 can be varied to achieve a particularly favorable desired tensioning of the airbag. 6 to obtain.

[0041] In the Fig. 14a to Fig. Section 15c describes a seventh embodiment of the restraint device, which is based on the fifth and sixth embodiments or differs from these two embodiments essentially in that the retaining strap 14 starting from the airbag 6 via the release mechanism 41 up to the seatbelt buckle 17 , i.e., along the entire length of the pelvic belt section 25 and from there upwards over a length of the chest strap section 26 extends. The release mechanism 41 This is not necessarily the case; a tear seam is also possible. 43 be designed so that the retaining strap 14 from the seatbelt 23 can be resolved. Depending on the design of this tear seam. 43 can the length of the tear from the seatbelt 23 be influenced.

[0042] In the present case, as can be seen in particular from a review of the Fig. 15b and Fig. 15c is recognizable - the tether 14 from the seatbelt 23 over the entire length of the pelvic belt section 25 all the way to the seatbelt buckle 17 from, but remains starting from the seatbelt buckle 17 about the further length of the safety belt 23 or the pelvic belt part 25 connected to this. If necessary, the tether can be 14 be connected to the tongue, whereby the connection is only via the tear seam. 43 That's sufficient. If the connection is made solely via the tear seam... 43 or is between the tether strap 14 and the seatbelt buckle 17 in turn a connection 28 If the respective parts of the tether are provided as described above, the tether can be used in the following way: 14 even extending into the area of ​​the pelvic belt part 26tear if this is desired or if an anchor point of the safety strap 14 in the area of ​​the pelvic belt part 26 than the airbag 6 opposite end of the tether 14 desired. The tether 14 The belt may, in turn, be tensioned via a belt retractor or belt tensioner. This may also be located in the belt buckle. 17 be held in reserve, as is provided here.

[0043] In another advantageous embodiment, it is provided that the retaining strap 14 in the event of airbag deployment from the seatbelt buckle 17 is separated and then by means of the belt reel 29 will be streamlined.

[0044] In the Fig. 16a to Fig. 17c describes an eighth embodiment analogous to the embodiments described above, in which the retaining strap 14 on his airbag 6a runner element at the far end 44 includes which runs along the seat belt 23 It is movable. For example, an additional piece of guide strap can be used. 45 It is intended that - as is particularly evident from Fig. 16a is recognizable - in the area of ​​the pelvic belt part 25 and over part of the length of the chest strap section 26 This guide strap runs 45 It lies here with a slight excess length on the actual seatbelt webbing, so that it cannot be tightened by the occupant or the belt tensioner.

[0045] In the event of airbag deployment 6 can the runner element 44 -as can be seen in particular from the Fig. 17b and Fig. 17c is recognizable - this additional guide strap 45 around the occupant in the direction of the seatbelt buckle 17 slide. Whether the lower part of the seatbelt 23Whether it is tensioned by a belt tensioner or a belt end fitting tensioner is irrelevant here. Through the runner element 44 This ensures that the retaining strap 14 with its airbag 6 far end to that side of the seat 1 which reaches the airbag 6 is turned away. It is clear that the runner element 44 also along a guide element other than the guide belt 45 can be reached. Reference symbol list 1 seat 2 seat cushion parts 3 Backrest section 4 cushions 5 Reference 6 airbags 7 Side cheek 8 Catching element 9 Catching element 10 Narrow side 11 Anchorage point 12 anchor points 13 tether 14 tether 15 Profile part 16 Fastening seam / safety belt device 17 Seatbelt buckle 18 Seatbelt buckle fastening 19 aperture 20 aperture 22 shot channel 23 Seatbelt 24 Belt tongue 25 pelvic belt section 26 Chest strap section 27 Belt fastening 28 connection 29 seatbelt retractors 30 rollers Part 31 32 Tongue 33 Castle Part 34 35 End Part 36 Part 37 38 Castle 39 Tongue 40 rollers 41 Release mechanism 42 Anchoring 43 Tear seam 44 Runner element 45 guide strap

Claims

[1] Restraint system for a seat (1) of a motor vehicle, comprising an airbag (6) which can be moved from a stow position to a restraint position, and comprising at least one catch element (9) which is connected at one end (35) to the airbag (6) and by means of which a movement of the airbag (6) from the stow position to the restraint position can be influenced, characterized by , that at least one arresting element (9) is connected to a seat belt device of the seat (1). [2] Restraint device according to the preamble of claim 1, characterized by , that at least one catching element (9) is arranged at least partially behind a panel (19, 20) held on an outside of a cover (4) of a cushion (5) of the seat (1). [3] Restraint device according to claim 1 and / or 2, characterized by, that a release mechanism (41) is provided by means of which the catch element (9) can be at least partially separated from the safety belt assembly (16). [4] Restraint device according to claim 1 and / or 2, characterized by , that a safety strap of the safety element (9) is provided which is connected to a safety belt (23) of the safety belt device (16) by means of a tear seam (43) or similar predetermined breaking element. [5] Restraint device according to any one of the preceding claims, characterized by , that the catch element (9) extends into a belt buckle (17) of the safety belt device (16). [6] Restraint device according to any one of the preceding claims, characterized by , that the catch element (9) is connected to the belt buckle (17) when the airbag (6) is in the stowed position and can be separated from the belt buckle (17) when the airbag (6) is moved into the restraint position. [7] Restraint device according to any one of the preceding claims, characterized by , that a safety strap (14) of the safety element (9) is provided, which runs in the area of ​​a lap belt part (25) of the safety belt (23) of the safety belt device (16). [8] Restraint device according to any one of the preceding claims, characterized by , that a retaining strap (14) of the retaining element (9) is provided, which runs in the area of ​​a chest strap part (26) of the safety belt (23) of the safety belt device (16). [9] Restraint device according to any one of the preceding claims, characterized by , that the airbag (6) is arranged on the side of the seat (1) facing the seat belt buckle (17) or on the side of the seat (1) facing away from the seat belt buckle (17). [10] Restraint device according to any one of the preceding claims, characterized by, that the arresting element (9) comprises a runner element (44) which is movably connected to the safety belt (23) of the safety belt assembly (16) and which can be moved along the safety belt (23) from the stow position to the restraint position when the airbag (6) is moved.

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