Webbing retractor

Abstract

The invention relates to a load-bearing seat belt retractor (10) for a seat structure (40) of a vehicle seat. The seat belt retractor (10) has two housing halves (20, 30) between which functional modules (11, 12, 13, 14, 15, 16, 17, 18, 19) of the seat belt retractor (10) are arranged. One functional module (11) is a belt reel (12) with a winding axis (A), wherein a plurality of support plates (21) oriented perpendicular to the winding axis (A) are provided on the functional modules (11, 12, 13, 14, 15, 16, 17, 18, 19), each of the support plates having at least two locking noses (22) and the locking noses (22) engaging into corresponding locking holes (23) in the two housing halves (20, 30). The housing halves (20, 30) have a flange (24) and / or a reinforcement directed towards the functional modules (11, 12, 13, 14, 15, 16, 17, 18, 19), and at least one part of the functional modules (13, 15) and / or a part of the support plates (21) bear against the flange (24) and / or the reinforcement in at least one direction parallel to the winding axis (A).

Description

Technical Field

[0001] This invention relates to a load-bearing seat belt retractor for a vehicle seat structure. Background Technology

[0002] Vehicle seats with integrated seatbelt systems are known, for example, as front seats in convertibles, where at least the seatbelt retractor is secured within the seat back. In this case, since there is no B-pillar supporting the seat, and due to reasons related to access to the rear seats or distance from the rear vehicle structure, the seatbelt retractor is preferably integrated into the seat back; therefore, the backrest must also be designed to absorb tension under restraint. The seatbelt retractor itself is identical in its basic structure to a standard seatbelt retractor, except for various additional sub-components specifically designed for mounting in the backrest, such as self-aligning inertial sensors.

[0003] In its basic design, the vehicle seat has a seat structure consisting of several load-bearing structural components used to secure the vehicle seat to the vehicle structure. The seat structure is equipped with springs and padding to improve riding comfort and also to secure other components, such as various seat adjustment mechanisms, including associated electric motors and other components such as heating devices, sensors, displays, headrests, etc.

[0004] In modern vehicles with autonomous driving systems, there is an increasing need for greater adjustability of vehicle seats in various orientations and positions, enabling occupants to utilize the freedom gained from autonomous driving—for example, for more meaningful communication with other occupants, for longer and more intensive rest periods, or even for work—and to orient the vehicle seats accordingly. Therefore, seatbelt devices, and specifically seatbelt retractors, must no longer be secured to the vehicle structure as before, but rather to the vehicle seats, as is already the case in the front seats of convertibles.

[0005] For example, DE 10 2018 213 279 A1 provides a load-bearing structural component for a vehicle seat in which a seat belt retractor is arranged. Summary of the Invention

[0006] In this context, the object of the present invention is to provide an improved, dimensionally stable, and impact-resistant seat belt retractor for seat structures that enables simple assembly.

[0007] To achieve this objective, a load-bearing seatbelt retractor has been proposed. Further preferred developments of the invention can be obtained from the accompanying drawings and related description.

[0008] According to the basic idea of ​​the present invention, a load-bearing seat belt retractor for a vehicle seat structure is proposed. The seat belt retractor has two housing halves, and a functional module is arranged between the two housing halves. One of the functional modules is a seat belt reel with a winding axis, and a plurality of support plates oriented perpendicular to the winding axis are provided on the functional module. Each support plate has at least two locking noses that engage with corresponding locking holes in the two housing halves. The housing halves are provided with flanges and / or reinforcements pointing towards the functional modules, and the functional modules and / or support plates are supported on the flanges and / or reinforcements in at least one direction parallel to the winding axis.

[0009] Supported by the functional modules and / or support plates, the flanges and reinforcements in the housing half absorb loads parallel to the winding axis of the seatbelt reel, achieving a greater force transmission in that direction than the locking nose. This reduces the load on the locking nose, increasing its load-bearing capacity for other load conditions. In this way, a simple and cost-effective method for positioning and securing the functional modules in the seatbelt retractor is also achieved, while simultaneously increasing the rigidity of the housing components or the seatbelt retractor.

[0010] In this context, "load-bearing" means that, in addition to transferring forces from the seatbelt to the seat structure, the seatbelt retractor can also absorb and transfer the loads of the seat structure itself. Therefore, the seatbelt retractor is suitable as a load-bearing structural component of the superstructure of the seat.

[0011] Specifically, one functional module of a seatbelt retractor is the seatbelt reel, on which the seatbelt can be wound to form a seatbelt coil. Another functional module is the locking device.

[0012] The functional modules can be reversible seatbelt tensioners, irreversible seatbelt tensioners, force limiting devices, sensor devices, or even control devices. Additionally, the functional modules can be electric motors, which can be configured for various functions within the seatbelt retractor.

[0013] The functional modules of the seatbelt retractor, arranged between the two housing halves, are preferably arranged coaxially or axially and in series with the seatbelt reel. This results in a space-saving construction in narrow, elongated installation spaces, and thus the seatbelt retractor can be easily installed in the back of the vehicle seat. The functional modules are arranged behind or in front of the seatbelt reel in the longitudinal direction relative to its axis of rotation. Other functional modules besides the seatbelt reel can be arranged axially in series with respect to its axis of rotation, i.e., one after another, such that they may protrude only slightly outward beyond the seatbelt winding, and the elongated design of the seatbelt retractor continues and extends further.

[0014] A support plate can support one or more functional modules of a seatbelt retractor, and the support plate can be arranged between functional modules or can be part of a functional module or part of the housing of a functional module. The support plate can also be used to reinforce load-bearing seatbelt retractors. Specifically, the support plate enables an elongated shape for seatbelt retractors with functional modules arranged in series. The support plate is preferably oriented with its surface normal parallel to the axis of rotation or winding axis of the seatbelt shaft.

[0015] Locking holes in the housing half can also be called positioning holes because they enable the predetermined positioning of functional modules during assembly, normal operation, and under constraints. For example, locking holes can be punched out of a sheet of metal or cut out using a laser.

[0016] In a preferred embodiment, two seat bars extending parallel to each other and spaced apart are inserted into and secured in a seatbelt retractor along an insertion axis. The two housing halves of the seatbelt retractor preferably extend over the entire width of the retractor. Each housing half may at least partially surround the two seat bars, which on either side form the lateral seat structure of the vehicle seat backrest. The two housing halves preferably form two sockets in the seatbelt retractor into which the two seat bars can be inserted. This, in turn, means that the seatbelt retractor can be easily fitted onto the seat bars of the backrest during assembly. In an advantageous embodiment, through-holes are provided in the housing halves, which also allow for easy securing of the seat bars using a threaded connection. The sockets formed for the seat bars enable force and / or torque transmission in directions other than the insertion direction, allowing force to be transmitted via a large contact surface between the seat bar and the housing half of the seatbelt retractor. Therefore, stress peaks and loads on the threaded connection can be reduced. In summary, this achieves a rigid, stable, and simultaneously simple connection.

[0017] In an advantageous embodiment, these flanges and / or reinforcements are formed of channel-shaped reinforcements, on which a portion of the functional module or support plate is supported on one or both sides parallel to the winding axis. The channel-shaped reinforcements can be introduced into the sheet metal in a cost-effective manner, such as by forming and / or stamping processes.

[0018] According to an improved embodiment, at least one housing component is proposed to have a closed flange that is stamped toward a functional module and has a cutout, a portion of which is carried in the cutout of the flange.

[0019] For example, if the notch is located at the center of the flange, the shape of the closed flange can achieve high rigidity, allowing the flange, divided into two parts by the notch, to remain stable. The notch enables precise positioning of the portion in which the functional module is supported. Furthermore, support can be provided in two opposing directions, specifically in two directions along the rotation axis of the seatbelt shaft or the winding axis of the seatbelt reel, which can be achieved using the notch. The combination of notches in the closed flange is also advantageous for the assembly process, as the assembly of the housing half or functional module is thus simplified by the pre-alignment type of the functional module or support plate in the flange relative to the notch.

[0020] According to an improved design, at least one locking hole in the housing component is provided with a retaining tongue. Through spring-loaded deformation of the retaining tongue, the retaining tongue can secure the locking nose inserted into the locking hole. Preferably, the retaining tongue protrudes into the locking hole to such an extent that when the locking nose engages in the locking hole, the wall thickness of the locking nose of the support plate causes deformation of the retaining tongue. This allows for simple securing during installation, simplifying the installation of the functional module itself and reducing the impact of manufacturing tolerances.

[0021] Furthermore, it is proposed that the fixing tongue is oriented parallel to the winding axis, and the tip of the fixing tongue is away from the seat belt reel functional module.

[0022] Furthermore, it is proposed that the two housing halves have multiple locking holes, each of which has a fixing tongue, and the tongues of all the fixing tongues in the locking holes of the two housing halves are oriented in the same direction, preferably away from the seat belt reel functional module.

[0023] Therefore, the fixed locking nose or support plate can be mounted relative to the functional module serving as the base. Multiple locking holes can be provided for different functional modules and / or support plates. In one possible embodiment, the fixing tongue is therefore parallel to the winding axis and wherein the tip of the tongue faces the motor or electric motor functional module serving as the base. The electric motor, as a functional module, can be advantageously mounted at an axially or coaxially arranged end; the electric motor can be positioned at the other end opposite the seatbelt reel in the seatbelt retractor. In addition to the multiple locking holes with the fixing tongue, other locking holes without the fixing tongue can also be provided in the two housing halves.

[0024] In an advantageous embodiment, the retaining tongue has a constant width. This allows for a greater retaining effect. The width of the tongue is preferably smaller than the width of the locking nose. Furthermore, the mounting force and the achievable retaining effect can be adjusted, particularly by the width of the locking nose and the excessive size of the tongue.

[0025] According to an improved embodiment, a functional module is proposed to have tabs extending parallel to the winding axis, and each half of the housing has at least one open flange into which the tabs of the functional module are inserted.

[0026] This allows functional modules to be secured in place on multiple axes, and also simplifies the installation of other functional modules between the two housing halves, for example, by simply inserting the functional modules into the two housing halves. In a possible implementation, the tabs of the functional modules can be oriented parallel to the winding axis of the seatbelt reel and inserted into corresponding opening flanges of the two housing components.

[0027] Motor modules or electric motors are particularly suitable as functional modules with tabs because they are typically located at the end of a coaxial arrangement of functional modules, which facilitates assembly. Functional modules typically located at the other end of a coaxial arrangement are seatbelt reels. Due to the function of seatbelt reels, they are less suitable for arranging tabs with corresponding orientations because of the seatbelt winding mechanism they feature.

[0028] In one possible implementation, at least one housing component may have a tab extending parallel to the winding axis, the tab being inserted into a corresponding opening flange of a functional module, preferably a motor module or an electric motor.

[0029] In another advantageous embodiment, the fixing tongue has a width that gradually tapers towards the tip of the tongue. As a result, initial resistance during assembly can be reduced.

[0030] According to an improved embodiment, a portion of the functional module is supported on both sides of the housing component in at least one closed flange, parallel to the winding axis, said at least one closed flange being stamped away from the functional module. This can also simplify the assembly of the housing half and the functional module by pre-aligning the functional module and / or optionally the corresponding support plate.

[0031] Specifically, it is advantageous when the functional module has a pyrotechnic tensioner, so that the load that occurs when the pyrotechnic tensioner is triggered can be absorbed on the surface by the housing components.

[0032] In an advantageous embodiment, at least one flange and / or reinforcement is formed by ribs oriented perpendicular to the winding axis. This allows for simple support of the functional module and / or support plate independent of the locking nose. Specifically, if the flange and / or reinforcement are stamped away from the functional module, the functional module can be carried on both sides parallel to the winding axis.

[0033] In one advantageous embodiment, the seat belt retractor has a functional module on which a C-shaped clamp is arranged, the two legs of which rest against the inside of two housing halves, and the seat bar can be inserted into the clamp and secured to the clamp and the two housing halves.

[0034] Each leg of the clamp therefore preferably forms a contact surface for contacting the housing component. Furthermore, the clamp preferably forms a socket on the seatbelt reel functional module, specifically below the seatbelt reel functional module, into which the seat bar can be inserted. The two housing halves of the seatbelt retractor preferably surround the C-shaped clamp from several sides. In this way, the functional module, specifically the seatbelt reel functional module, can directly introduce force into the inserted and secured seat bar. Specifically, under constraints, this enables direct force transmission between the obstructed seatbelt reel and another seat structure connected to the vehicle.

[0035] In an advantageous embodiment, a through hole is provided in the fixture, corresponding to a through hole in the housing half, which further enables the seat rod to be easily fastened using a threaded connection.

[0036] According to an improved design, a housing component is designed with an L-shaped profile. The housing component can be fastened to two parallel and spaced-apart seat posts.

[0037] The preferred L-shaped profile, extending parallel to the winding axis of the seatbelt retractor, has a positive effect on the stiffness of the seatbelt retractor and can be made from a metal sheet in a simple manner. For example, the bend between the two legs of the preferred L-shaped profile, which is substantially perpendicular to each other, can also be achieved by two curved lines.

[0038] The L-shaped profile of a housing component specifically enables the insertion of a functional module with two tabs into an opening flange on each leg of the L-shaped profile, thereby further improving the secure fastening of the functional module within the housing.

[0039] It was also proposed that a housing component be designed as a cap-shaped profile with an overall height of less than 15 mm.

[0040] The housing component with a cap-like profile is substantially flat and extends across the entire width of the seatbelt retractor. The U-shaped profile is preferably formed together with a housing component having an L-shaped profile, within which the functional modules are arranged. This U-shaped profile is open in the direction in which the seat bar is intended to be received; that is, the seatbelt retractor housing is open at the bottom, which is typical of seatbelt retractors mounted at the upper end of the vehicle seat back.

[0041] Housing components with an L-shaped profile and housing components with a cover-shaped profile can be made, for example, from sheet metal using stamping and deformation.

[0042] According to an improved design, the two housing halves are directly connected to the tongue and the corresponding slot via plug-in connectors.

[0043] This allows for a simple way to transmit force across a relatively long contact area, specifically along the width of the seatbelt retractor, between two housing halves on multiple axes. The tongue and slot can be cost-effectively fabricated using conventional sheet metal processing methods.

[0044] In a potentially advantageous implementation, the tongue is oriented parallel to the insertion axis of the seat rod. This achieves a well-formed locking connection between the two housing halves in all directions other than the insertion axis.

[0045] Furthermore, a vehicle seat structure is proposed, which has two seat rods extending parallel to each other and spaced apart within the backrest of the vehicle seat. The seat rods are inserted into and secured to a proposed load-bearing seatbelt retractor.

[0046] Therefore, the seat belt retractor, acting as a structural lateral support between the vertical seat bars of the backrest, is load-bearing.

[0047] According to an improved design, each of the two seat posts is fastened to the seat belt retractor using a screw, which feeds through through holes in the seat post and the two housing halves.

[0048] In this way, the seat belt retractor can be secured to the seat post in a simple, stable, and cost-effective manner. Furthermore, a C-shaped clamp for the functional module is proposed, arranged between the housing half and at least one seat post, with corresponding through holes for securing the two housing halves and the seat post together using screws. Attached Figure Description

[0049] The invention will now be explained using preferred embodiments with reference to the accompanying drawings. The following is shown: Figure 1 The load-bearing seat belt retractor is shown in an exploded view; Figure 2 The seatbelt retractor for the load-bearing seat is shown in an exploded view from the rear. Figure 3 An exploded view shows a load-bearing seatbelt retractor with a seat bar; Figure 4 The load-bearing seat belt retractor is shown in an exploded view from above; Figure 5 A locking hole with a locking nose having a retaining tongue and an insert is shown; Figure 6 A locking hole with another fixing tongue and an inserted locking nose is shown; Figure 7 The locking hole with a locking tongue and an insert is shown in a side view. Detailed Implementation

[0050] Figure 1 An exemplary embodiment of a load-bearing seatbelt retractor 10 is illustrated in an exploded view. The seatbelt retractor 10 has multiple functional modules 11, 12, 13, 14, 15, 16, 17, 18, and 19, which are constructed one after another in a stacked arrangement. This results in an elongated design that allows the seatbelt retractor to be positioned in the upper part of the backrest of a vehicle seat. Functional modules 11, 12, 13, 14, 15, 16, 17, 18, and 19 are, for example, seatbelt reels 12 for seatbelts (not shown), around which drive springs 11 are provided. The seatbelt reel 12 has a winding axis A around which the seatbelt can be wound to form a seatbelt coil. Furthermore, a tensioner drive wheel 13 is provided, which enables pyrotechnic seatbelt tensioning. A force limiting device 14 (LLA) is arranged next to an associated switching device 15. A forming head 16 with a stop pawl is axially disposed next to a frame 17 having teeth for stopping the stop pawl. Furthermore, a transmission device 18, specifically a planetary gear transmission device 18, may be axially disposed, on which a motor 19, specifically an electric motor, is disposed.

[0051] Multiple functional modules have a support plate 21, which is integral or mounted between two functional modules, and the support plate carries the functional modules in a housing formed substantially by two housing halves 20, 30. The two housing halves 20, 30 are each laterally arranged relative to the winding axis A and surround the functional modules 11, 12, 13, 14, 15, 16, 17, 18, 19, such that these functional modules are held and carried within the two housing halves 20, 30. The housing halves 20, 30 at least partially complement each other to form a completely closed profile, which allows the functional modules to be carried over their entire perimeter.

[0052] The support plate 21 has a plurality of locking noses 22, which, in the assembled state, engage in locking holes 23 provided in the two housing halves 20, 30 and axially fix the support plate 21 in consideration along the winding axis A. The support plate 21 can be supported on the inner side of the housing of the housing components 20, 30 in a direction perpendicular to the winding axis A using its peripheral edge.

[0053] In addition to the locking holes 23 for securing functional modules 11, 12, 13, 14, 15, 16, 17, 18, and 19, the two housing halves 20 and 30 have inwardly shaped flanges 24 (i.e., toward the functional elements), which form channel-like reinforcements when viewed from the outside; see also Figure 2 The inwardly formed flanges 24 may have cutouts 25 in which a portion or part of the functional modules 13, 15 are carried in two directions parallel to the winding axis A. These flanges 24 are oriented parallel to the winding axis A, for example, in a channel-like manner. Furthermore, these flanges 24 are closed flanges 24, which do not have openings or punches at their axial ends. Simultaneously, the flanges 24 serve as reinforcements for the corresponding housing halves 20, 30.

[0054] Furthermore, a closed flange 28 oriented perpendicular to the winding axis A is provided on one of the housing halves 20. The flange 28 faces outward, i.e., away from the formation of one or more functional modules. The functional module 13 can be carried in the flange 28 in two directions: along the winding axis A and transverse to the winding axis A.

[0055] Three tabs 27 are provided on the motor functional module 19, oriented parallel to the winding axis A and pointing towards the seat belt reel 12. These tabs 27 are inserted into three corresponding open flanges 26 provided on the two housing halves 20 and 30.

[0056] The seatbelt reel 12 includes a C-shaped clamp 33 mounted on a frame and / or a support plate 21 of the seatbelt reel 12. The clamp 33 has two legs 34 that rest against the inner sides of the housing halves 20 and 30, respectively. In a possible exemplary embodiment, the functional module 19 on the other side of the seatbelt retractor 10 may also have a corresponding C-shaped clamp 33.

[0057] The housing halves 20 and 30 can be connected by inserting a tongue 35 into a corresponding slot 36 on the other housing half 20 or 30, and are connected by a shape-locking engagement. As can be seen and shown in the accompanying drawings, this shape-locking engagement preferably occurs on the top of the seat belt retractor 10.

[0058] One housing half 30 is L-shaped or has an L-shaped profile, which in this exemplary embodiment has an opening for a seatbelt (not shown) in the area of ​​the seatbelt reel 12. The other housing half 20 is designed as a cover or cap-like profile and is therefore substantially flatter than the housing half 30 with its two legs having an L-shaped profile.

[0059] Figure 3 A load-bearing seat belt retractor 10 is shown, which is a component of a seat structure 40 in the form of two seat bars 41 in the shape of a vehicle seat back. The seat belt retractor 10 is mounted to the seat bars 41 from above and perpendicular to the winding axis A, and can be threaded onto the seat bars by means of corresponding through holes, thus forming a load-bearing element of the seat structure 40. C-shaped clamps 33 or more are arranged between the inner sides of the two housing halves 20, 30 and the seat bars 41 and are threadedly connected to them.

[0060] Figure 5 and Figure 6 A top view shows locking holes 23 in housing halves 20, 30, into which locking noses 22 are inserted. In two exemplary embodiments, a retaining tongue 31 is provided that presses against the locking nose 22, thus pressing the locking nose 22 against the opposite edge of the locking hole 23. Therefore, the locking nose 22 on the support plate is secured in the direction of pull-out from the locking hole 23, which simplifies assembly and prevents clicking. Specifically, tolerance compensation during the installation of axially stacked functional modules 11, 12, 13, 14, 15, 16, 17, 18, 19 can be achieved using the retaining tongue 31 in the locking hole 23. In an advantageous exemplary embodiment, all locking holes 23 point towards functional module 19 at their opposite ends opposite the seatbelt reel 12, thereby enabling tolerance compensation relative to the base.

[0061] exist Figure 5In an exemplary embodiment, the locking tongue 31 tapers towards the contact portion with the locking nose 22, such that the fixing tongue 31 is significantly narrower at the tongue tip 32 than at the base of the locking tongue 31. Figure 6 A locking tongue 31 with a constant width is shown.

[0062] Figure 7 It shows Figure 5 and Figure 6 A cross-sectional view of an exemplary embodiment is shown, in which the deflection and deformation of the fixing tongue 31 are illustrated, which enables the tongue tip 32 of the fixing tongue 31 to press against the locking nose 22.

[0063] Specifically, the retaining tongues 31 are oriented uniformly in such a way that they compel all functional modules 11, 12, 13, 14, 15, 16, 17, 18, and 19 to form a compact design in the same direction. In an exemplary embodiment of the invention, this is toward the electric motor 19 fixed to the end of the seatbelt retractor.

[0064] The switching device 15 for the force limiting device 14 includes a relatively wide plastic plate with a width of approximately 2 cm, and thus, due to this width, it can be oriented particularly well at an angle between the two housing halves 20, 30. Furthermore, after orientation, the switching device 15 can be secured in the oriented position using a screw. The threaded connection is preferably made externally.

Claims

1. A load-bearing seat belt retractor (10) for a seat structure (40) of a vehicle seat, wherein - The seatbelt retractor (10) has two housing halves (20, 30), and functional modules (11, 12, 13, 14, 15, 16, 17, 18, 19) of the seatbelt retractor (10) are arranged between the two housing halves, wherein - A functional module (11) is a seat belt reel (12) with a winding axis (A), wherein - A plurality of support plates (21) oriented perpendicular to the winding axis (A) are provided on the functional modules (11, 12, 13, 14, 15, 16, 17, 18, 19), each support plate having at least two locking noses (22), the locking noses (22) engaging in corresponding locking holes (23) in the two housing halves (20, 30), characterized in that - The housing half (20, 30) has a flange (24) and / or a reinforcement pointing toward the functional modules (11, 12, 13, 14, 15, 16, 17, 18, 19), at least one part of the functional module (13, 15) and / or a part of the support plate (21) is carried on the flange (24) and / or the reinforcement in at least one direction parallel to the winding axis (A).

2. The load-bearing seat belt retractor (10) according to claim 1, characterized in that... The flange (24) and / or reinforcement is formed by a channel-shaped reinforcement, and a portion of the functional module (13, 15) or the support plate (21) is parallel to the winding axis (A) and carried on the channel-shaped reinforcement on one or both sides.

3. The load-bearing seat belt retractor (10) according to claim 1 or claim 2, characterized in that... At least one housing half (20, 30) has a closed flange (24) that is stamped toward the functional module (13, 15) and has a cut (25) in which a portion of the functional module (13, 15) is carried.

4. The load-bearing seat belt retractor (10) according to claim 1, characterized in that... At least one locking hole (23) has a retaining tongue (31).

5. The load-bearing seat belt retractor (10) according to claim 4, characterized in that... The fixing tongue (31) is oriented parallel to the winding axis (A), and the tongue tip (32) of the fixing tongue (31) is away from the functional module (12) that carries the seat belt reel.

6. The load-bearing seat belt retractor (10) according to claim 5, characterized in that... The two housing halves (20, 30) have a plurality of locking holes (23), each locking hole having a retaining tongue (31), and the tongue tips (32) of all the retaining tongues (31) in the locking holes (23) of the two housing halves (20, 30) are oriented in the same direction.

7. The load-bearing seat belt retractor (10) according to claim 4, characterized in that... The fixed tongue (31) has a constant width.

8. The load-bearing seat belt retractor (10) according to claim 5, characterized in that... The fixed tongue (31) has a width that gradually tapers toward the tip (32).

9. The load-bearing seat belt retractor (10) according to claim 1, characterized in that... The functional module (19) has a tab (27) extending parallel to the winding axis (A), and each of the housing halves (20, 30) has at least one open flange (26), into which the tab (27) of the functional module (19) is inserted.

10. The load-bearing seat belt retractor (10) according to claim 1, characterized in that... A portion of the functional module (13) is carried on both sides in at least one closed flange (28) of the housing half (20, 30), said at least one closed flange being stamped away from the functional module (13).

11. The load-bearing seat belt retractor (10) according to claim 1, characterized in that... At least one flange (28) and / or reinforcement is formed by a rib oriented perpendicular to the winding axis (A).

12. The load-bearing seat belt retractor (10) according to claim 1, characterized in that... The load-bearing seat belt retractor (10) has a functional module (12) on which a C-shaped clamp (33) is arranged. The two legs (34) of the C-shaped clamp (33) sit on the inside of the two housing halves (20, 30) respectively, and the seat rod (41) can be inserted into the clamp (33) and fastened to the clamp (33) and the two housing halves (20, 30).

13. The load-bearing seat belt retractor (10) according to claim 1, characterized in that... One of the housing halves (30) is designed to have an L-shaped profile.

14. The load-bearing seat belt retractor (10) according to claim 1, characterized in that... One of the housing halves (20) is designed as a cap-shaped profile with a total height of less than 15 mm.

15. The load-bearing seat belt retractor (10) according to claim 1, characterized in that... The two housing halves (20, 30) are directly connected by the insertion of a tongue (35) into the corresponding slot (36).

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