Belt retractor having electrically actuatable locking device

Abstract

The invention relates to a seat belt retractor. The seat belt retractor is provided with a seat belt shaft (20) which can be rotatably mounted; and an electrically actuatable locking device (100), which, when actuated, indirectly or directly locks the seat belt shaft (20) in the pull-out direction; the system cover (300) and the bearing cover (200) are provided, and the bearing cover (200) has a holder (201) for the electrical locking device (100), and wherein the system cover (300) covers the bearing cover (200) and the electrical locking device (100) held thereon in the mounted position towards the outside, and wherein the system cover (300) is arranged on the bearing cover (200). Wherein the system cover (300) and the bearing cover (200) each have a sub-receiving region (301, 204), which are complementary to each other when the system cover (300) and the bearing cover (200) are in the mounted position, in order to form a receiving region (400) for a plug contact housing.

Description

[0001] The invention relates to a seat belt retractor having the features of the preamble of claim 1 , which has an electrically actuatable locking device.

[0002] An electrically actuatable locking device of the type under consideration is known, for example, from GB 2 398 824 A.

[0003] Such a locking device serves to stop the movement of an externally toothed control disk rotatably mounted on the belt shaft of the belt retractor relative to the belt shaft by meshing a locking lever and thereby forcing a locking pawl to execute a control movement into a toothed portion fixed to the vehicle, thereby subsequently locking the belt shaft in the extension direction.

[0004] In conventional mechanical locking devices, an inertial mass is mounted on a contact surface which, when a predetermined vehicle deceleration is exceeded, is deflected so that the locking lever is deflected and forced into engagement with the toothing of the control disk. Such mechanical locking devices are also referred to as vehicle-sensitive sensor devices. One problem with these mechanical locking devices is that, regardless of the installation geometry of the seat belt retractor, the inertial mass always has to be aligned on the contact surface in a defined orientation relative to the longitudinal axis and the transverse axis of the vehicle in order to prevent the seat belt shaft from being inadvertently locked. The seat belt retractor therefore has to be designed individually for the vehicle, since the orientation of the contact surface and the mass applied thereto is designed individually relative to the seat belt retractor in such a way that it corresponds to a predetermined orientation, taking into account the installation geometry of the seat belt retractor in the vehicle. Furthermore, in the case of a seat belt retractor integrated in the front seat, such as in the case of a convertible, there is the problem that when adjusting the inclination angle of the seat backrest or when folding the seat backrest forward to access the rear seat, the inertial mass is unintentionally deflected to the contact surface and thus causes the locking lever to be unintentionally forced into the outer toothing of the control disk for the control movement. The seat belt retractor is thereby locked in the pull-out direction and the seat backrest cannot be pivoted further or the occupant cannot fasten the seat belt. In order to prevent this, additional disconnection mechanisms or compensation mechanisms must be provided, which, however, can only function in these cases in order to ensure that the occupant is restrained in the event of an accident in all cases. Due to the objectives to be achieved, such a mechanical locking device is mechanically very complex.

[0005] In contrast, in the case of an electrically actuable locking device known, for example, from GB 2 398 824 A, the movement of the locking lever is electrically controlled, thus omitting the previously required inertial mass. As a result, the seat belt retractor can be installed unchanged at different installation positions in the vehicle and the seat back. Furthermore, the locking of the belt shaft can be controlled by an electrical signal from a control device. In this case, the signal can be generated by the control device, which can also generate the signal based on other sensor devices or control systems. For example, it is conceivable that the belt shaft is automatically locked when a dynamic assistance system, which is controlled, for example, based on the signal of an optical sensor device, is activated. Thus, the electrical locking device is also controlled directly or indirectly based on the signal of the optical sensor device. Furthermore, the electrically actuable locking device is functional in any orientation and arrangement, since it is not actuated by inertial forces and therefore does not have to be oriented in a specific orientation relative to the direction of travel of the vehicle. It can therefore also preferably be arranged in the seats of at least semi-automatic vehicles in which the occupants are able to adjust the seat over a much greater adjustment range than is possible in the case of seats of conventional, non-automatic vehicles, in order to improve communication with other occupants, to align in a rest position or generally also to exploit the degrees of freedom gained by automated driving.

[0006] One problem with a seat belt retractor having such an electrically actuatable locking device is that the seat belt retractor must have one or more electrical lines for controlling the locking device, which must be in contact with an external control device or a power source. This is particularly problematic because the electrical contact can only be established when the seat belt retractor is installed in a vehicle, wherein vehicle manufacturers place particular emphasis on a contact that is as easy to operate as possible and can be achieved without error.

[0007] The object of the present invention is to provide a seat belt retractor with an electrically actuatable locking device which should have easily operable electrical contacts.

[0008] To achieve this object, a seat belt retractor is proposed having the features according to claim 1. Further preferred embodiments of the invention can be gathered from the dependent claims, the drawings and the associated description.

[0009] According to the basic idea of ​​the invention, it is provided that the system cover and the bearing cover each have a partial receiving area which complement each other in the installed position of the system cover and the bearing cover in order to form a receiving area for the plug contact housing.

[0010] The proposed solution has the advantage that the resulting accommodation area forms a simple guide for inserting the plug contact housing during installation. Alternatively, the plug contact housing may also already be held in the seat belt retractor accommodation area, which plug contact housing is electrically connected to the electrical line and can easily be contacted with the counter contact during installation. The accommodation area is formed by a sub-accommodation area on the bearing cover and a sub-accommodation area on the system cover, so that the accommodation area is automatically formed when the seat belt retractor and the system cover are arranged on the bearing cover. It is particularly advantageous that two components that are already provided are used here: the bearing cover and the system cover, so that the accommodation area is very simple in construction and can be realized with minimal additional effort and minimal additional costs. In addition, the accommodation area is intentionally formed by a sub-accommodation area on the bearing cover, on which a holder for the locking device is also arranged, so that the accommodation area is arranged in direct spatial relationship with the locking device held in the holder, wherein the electrical line of the locking device is to be contacted.

[0011] It is further proposed that the plug contact housing can be fixed in the receiving area in a positive fit manner along and / or against the insertion direction predetermined by the plug-in contact housing. This type of surface fit fixation of the plug contact housing can be formed, for example, by protrusions, grooves or lugs, which ensure that the plug contact housing will not be displaced in a predetermined direction. The proposed solution allows the plug contact housing to be supported in or on the receiving area during the insertion process and / or removal process of the counter contact, so that the insertion process and / or removal process is facilitated by preventing the plug contact housing from sliding during the insertion process or being pulled during the removal process. In addition, if the contact is realized via the plug contact housing that has been fixed in the receiving area and connected to the electrical line, this can prevent the connection between the electrical line and the plug contact housing from being stressed during the insertion process and / or removal process. In addition, the plug contact housing is thus fixed in a predetermined orientation. This simplifies the insertion process itself, and the operator can more easily find the plug contact housing with the line arranged therein and contact the counter contact.

[0012] It is further proposed that the plug contact housing can be fixed in the receiving area in a positively locking manner with respect to a rotational movement about a rotation axis oriented parallel to the longitudinal axis of the electrical line. The proposed further development ensures that the plug contact housing cannot be twisted relative to the longitudinal axis of the electrical line.

[0013] The contact design can be realized very easily because the receiving area has a non-circular, preferably quadrilateral, particularly preferably square shape in a plane oriented perpendicular to the predetermined insertion direction of the plug contact housing. The non-circular, quadrilateral or even square shape of the receiving area determines the angular orientation of the plug contact housing to be inserted into the receiving area, which is suitable for the orientation of the electrical contact to be contacted. If the plug contact housing is already held in the receiving area, the orientation of the plug contact housing is determined by the shape of the receiving area. In addition, the shape of the receiving area provides support for the plug contact housing, so that the plug contact housing is fixed in the predetermined orientation even when external forces are applied.

[0014] It is further proposed that the accommodating area has a shape coding, which defines the arrangement and / or orientation of the plug contact housing. The shape coding of the accommodating area defines a predetermined arrangement and orientation of the plug contact housing in the accommodating area. The plug contact housing can therefore be arranged and held in the accommodating area only in a predetermined arrangement or orientation. This predetermined orientation of the plug contact housing can, for example, be designed for a particularly advantageous, very stress-free arrangement and the supply of electrical lines to the plug contact housing in an electrical locking device. In addition, the shape coding not only directly informs the personnel of the installation position where the plug contact housing must be installed, but also prevents the plug contact housing from being installed in a different, incorrect orientation, because this is impossible due to the shape coding. The shape coding can be achieved, for example, by a lug, groove or step protruding on one side.

[0015] It is further proposed that the plug contact housing protrudes from the receiving area and is supported by a first shoulder on the outer edge of the receiving area. By supporting the plug contact housing, the insertion force during contact is transmitted via the plug contact housing into the receiving area, so that, apart from unavoidable friction forces, the electrical lines in the plug contact housing are not subjected to stress.

[0016] It is further proposed that the plug contact housing is supported on at least one of the two mutually facing edge sides of the sub-accommodation area via a second shoulder. The second shoulder limits the insertion depth of the plug contact housing into the corresponding sub-accommodation area. In addition, the plug contact housing can be clamped more effectively in the accommodation area between the sub-accommodation areas.

[0017] It is further proposed that the two sub-receiving areas are connected to each other by a latching connection. The latching connection is advantageous because it can be produced without any tools and is very cost-effective by integrally molding the latching edge and the latching arm onto the sub-receiving area, for example by a plastic injection molding process.

[0018] It is further proposed that a control disk is provided which is rotatably mounted on the belt shaft or on the bearing cover, and that an electrically actuable locking device has a housing with a base plate and a vertical first leg, and has a locking lever which is pivotally mounted in a pivot bearing of the vertical first leg and has a steel plate, and that the electrically actuable locking device stops the control disk relative to the belt shaft (20) by the engagement of the locking lever with the toothed portion of the control disk and thereby forces the locking pawl to move, during which the locking pawl engages with the toothed portion of the belt retractor fixed to the vehicle and locks the belt shaft in the extension direction. The triggering of the locking of the belt shaft which stops the control disk and the resulting forced movement of the locking pawl have long been proven in practice, wherein the control disk is only used to control the movement of the locking pawl, and all forces for restraining the occupant are absorbed by the locking pawl which is engaged with the toothed portion fixed to the vehicle.

[0019] It is further proposed that the locking lever has a lever arm protruding outward from the first leg, a first spring acts on the lever arm, and the first spring preloads the locking lever to a position in which the locking lever engages with the toothing of the control disk with a locking tip arranged at the end of the locking arm. The proposed solution is that the locking device is designed so that in the initial state, the control disk is locked and the belt shaft of the seat belt retractor is locked.

[0020] It is further proposed that the locking device has an electromagnet arranged in a housing, which, by energizing, exerts a force on the locking lever, by which the locking lever is pulled out of the toothed portion of the control disk with the locking tip. The electrical locking device is designed so that, in the case of energization, the locking of the belt shaft is released by pulling the locking lever out of the toothed portion of the control disk, and automatically locks when the energization is interrupted. This is advantageous, for example, in the case of a power failure, such as in the case of a serious accident, because in this case the occupant is then locked by the seat belt.

[0021] It is further proposed that the plug contact housing is dimensionally stable and has a non-circular outer shape corresponding to the shape of the receiving area. If the plug contact housing is first inserted during installation on the vehicle, the proposed solution offers the advantage of an improved, rotationally rigid insertion movement of the plug contact housing into the receiving area. If the plug contact housing is already arranged in the receiving area of ​​the seat belt retractor and the contacting of the seat belt retractor is effected via the plug contact housing, the proposed solution offers the advantage that the plug contact housing is thereby fixed in the receiving area in a predetermined orientation and can support itself in this position in the receiving area.

[0022] The present invention is explained below based on preferred embodiments with reference to the accompanying drawings. In the accompanying drawings:

[0023] Figures 1 to 4An electric locking device according to the prior art and a seat belt retractor having such a locking device are shown;

[0024] Figures 5 to 11 A further improved locking device of a belt retractor according to the invention with a bearing cover and a system cover is shown in various representations.

[0025] Figure 1 and Figure 2 An electrically actuable locking device 100 used by the applicant in its products and corresponding to the embodiment of GB 2 398 824 A is shown. The electrically actuable locking device 100 comprises as basic elements a housing 1 having an L-shaped basic structure comprising a base plate 15 and a first vertical leg 16, a locking lever 2 pivotably mounted on a first vertical leg 16 of the housing 1, an electromagnet 3 and a first spring 4, the first spring being held on the housing 1 by one end and connected by the other end to a lever arm 22 of the locking lever 2 protruding outward from the first vertical leg 16. The first spring 4 is designed as a tension spring so that it preloads the locking lever 2 to a position in which the locking lever engages with the toothed portion 26 of the control disc 21 with the locking tip 25 and thereby holds the control disc 21 backward relative to the belt shaft 20. The control disc 21 having the toothed portion 26 can only be actuated in the position in which the locking lever 21 is engaged with the toothed portion 26 of the control disc 21. Figure 3 2 is seen in a seat belt retractor according to the prior art. In this way, when the seat belt shaft 20 rotates in the pulling-out direction, the locking pawl is automatically forced into the toothed portion fixed to the vehicle, and the seat belt shaft 20 is then locked to prevent further pulling out of the seat belt. The locking lever 2 includes a profile part 24 and a steel plate 5, which faces the electromagnet 3, so that the locking lever 2 is attracted by the electromagnet when the electromagnet 3 is energized and is therefore pulled out of the toothed portion 26 of the control disk 21. Therefore, the seat belt shaft 20 can then rotate freely in the pulling-out and retracting directions. The advantage of this solution is that the seat belt shaft 20 is locked in the pulling-out direction even in the event of a power failure or a failure of the electromagnet 3, and the occupant is also reliably restrained in this case.

[0026] The electromagnet 3 comprises a base component 6, which comprises a cylindrical central part 7 and two radial flanges 8, one of these radial flanges protruding radially outwards at one of the ends of the central part 7 in each case. The electromagnet 3 is held together with the base component 6 on a bottom plate 15 of the housing 1. The base component 6 has a tubular through-section 14 in the central part 7 and an annular intermediate space 9 on the radial outside of the central part 7, which is defined by the ends of the radial flanges 8 towards the central part 7. Furthermore, the electromagnet 3 comprises a coil 10 with a plurality of windings, which is arranged in the annular intermediate space 9 and is in electrical contact with an external control device via a line 11 provided in the base component 6. Furthermore, the electromagnet 3 comprises a first core 12, which is arranged in the tubular through-section 14 of the base component 6 and whose free end faces the steel plate 5 of the locking lever 2.

[0027] When the coil 10 is energized, the locking lever 2 is attracted because it closes the first magnetic circuit I, which is defined by the first vertical leg 16 of the housing 1, the first core 12, and the locking lever 2 and the parts of the bottom plate 15 located between the first core 12 and the first vertical leg 16, as shown in FIG. Figure 2 In addition, a damping element 13 in the form of an inherently flexible tube (for example in the form of a short piece of tubular material) is provided, which is clamped at its ends between two projections of the radial flange 8 facing the locking lever 2. The damping element 13 is positioned so that the free end of the locking lever 2 does not abut against the damping element 13 in the deflected position ( Figure 2 ), and only in the attraction position abuts against the middle soft part of the damping element 13 between the clamping points ( Figure 2 ). Thus, the attraction movement of the locking lever 2 is damped in the final stage of the movement. By means of this damping, a soft stop is achieved and disruptive "clicking noises" are avoided during the attraction movement of the locking lever 2 and any subsequent slight movements.

[0028] The locking device 100 is fastened in a holder 201 of a bearing cover 200 on which the control disk 21 and / or the belt shaft 20 can be mounted. The bearing cover 200 itself is held on the frame 17 of the belt retractor, such as Figure 4 In addition, the bearing cover 200 can have a toothing or a bearing structure 202 for a gear drive of an ELR / ALR switching device on its outer side. In addition, the bearing cover 200 has a recess 203, through which the control disk 21 arranged in the bearing cover 200 is exposed to the outside, so that the locking rod 2 can be guided from the outside with its locking tip 25 into the toothing 26 of the control disk 21.

[0029] The bearing cap 200 is covered on the outside by a system cover 300, which can be Figure 4The system cover 300 is seen in FIG. 1 and is then fastened directly to the frame 17 or indirectly to the frame 17 via the bearing cover 200. Therefore, the system cover 300 covers the bearing cover 200 and the locking device 100 held thereon toward the outside and forms a protection for the locking device 100 and other components on the bearing cover 200 from external mechanical influences.

[0030] Here, the electrically actuatable locking device 100 is shown with reference to an embodiment in which the locking lever 2 is spring-loaded in the meshing position. However, the electrically actuatable locking device 100 can also be designed in such a way that the locking lever is spring-loaded against the meshing direction and is driven into the meshing movement in the toothing 26 only by energizing the electromagnet 10 and the magnetic force acting thereby. Furthermore, it is also possible to use an electrically actuatable locking device 100 which triggers the locking of the belt shaft 20 during energization or when the current is interrupted by a differently designed mechanical locking device. The essential aspect of the invention is that it is only necessary to ensure that the electrically actuatable locking device has an electrical line 11 which must be contacted when the belt retractor is installed or when the belt retractor is installed in a vehicle.

[0031] Figures 5 to 7 The new bearing cover 200, the new system cover 300 and another improved electric locking device 100 of another improved seat belt retractor are shown. Figure 3 and Figure 4 The bearing cover 200, the system cover 300 and the electric locking device 100 in the seat belt retractor are replaced by Figures 5 to 7 The bearing cover 200, the system cover 300 and the electrical locking device 100 shown are formed. Otherwise, the components of the seat belt retractor, in particular the frame 17 with its fastening points, can remain unchanged.

[0032] Figures 5 to 7 The electrical locking device 100, the bearing cover 200 and the system cover 300 correspond in their basic structure to Figures 1 to 4 The electrical locking device 100, the bearing cover 200 and the system cover 300 are shown, wherein Figures 5 to 7 The bearing cover 200, the system cover 300 and the locking device 100 are described below. The bearing cover 200 has a holder 201 in which the electrical locking device 100 is held. The holder 201 extends toward its radial outer side to form a sub-accommodation area 204. The system cover 300 also has a sub-accommodation area 301 extending radially outward. In addition, a plug contact housing 500 is provided, which is placed on the free electrical line 11 of the locking device 100 and is connected to the free electrical line, for example, in a crimping process.

[0033] In the installed position, the system cover 300 and the bearing cover 200 together form a receiving area 400 in the intermediate space between the sub-receiving area 301 of the system cover 300 and the sub-receiving area 204 of the bearing cover 200, in which the plug contact housing 500 is held. For installation, the plug contact housing 500 is placed on the electrical line 11 of the electrical locking device 100. Subsequently, the locking device 100 is inserted into the holder 201 of the bearing cover 200, and the plug contact housing 500 held thereon via the electrical line 11 is inserted into the sub-receiving area 204. Alternatively, it is also possible to place the plug contact housing 500 on the electrical line 11 after the electrical locking device 100 has been inserted into the holder 201. Then, the system cover 300 is closed to cover the free side of the plug contact housing 500, and the sub-receiving area 204 of the bearing cover 200 is completed by the sub-receiving area 301 of the system cover 300 to form the receiving area 400. Furthermore, after the system cover 300 and the bearing cover 200 have been assembled, for example when the seat belt retractor is installed in a vehicle, the plug contact housing 500 can also be inserted from the outside into the receiving area 400 .

[0034] exist Figure 8 , a cross section of the bearing cover 200 can be shown with a view of the plug contact housing 500 arranged in the partial receiving area 204. The plug contact housing 500 is shaped such that it protrudes from the front side of the partial receiving area 204. Fig. 9 The cross section of the system cover 300 is shown with a view of the plug contact housing 500 arranged in the sub-accommodation area 301. The plug contact housing 500 is shaped such that it protrudes from the front of the sub-accommodation area 301. Furthermore, the plug contact housing 500 is shaped such that it covers the front edges of the sub-accommodation areas 204 and 301 and thus covers the front edge 401 of the assembled accommodation area 400 with the first shoulder 501.

[0035] exist Fig.10 and Fig.11, the plug contact housing 500 can be seen in the receiving area 400 in two different sections perpendicular to the electrical line 11. The cross section of the sub-receiving areas 204 and 301 is both U-shaped, with a base and two lateral vertical side walls oriented parallel to each other. In the assembled position of the system cover 300 and the bearing cover 200, the sub-receiving areas 204 and 301 complement each other to form a receiving area 400 with a non-circular cross section (preferably approximately rectangular or even square), in which the plug contact housing 500 is fixed non-rotatably relative to its longitudinal axis or the longitudinal axis of the electrical line 11. In addition, the sub-receiving area 301 of the system cover 300 has a groove 302 arranged on one side, which has a shape corresponding to the vertical lug 503 of the plug contact housing 500. The groove 303 of the sub-receiving area 301 and the lug 503 of the plug contact housing 500 together form a shape decoding, which enables or limits the arrangement of the plug contact housing 500 in the receiving area 400 in only one position and orientation. Furthermore, the plug contact housing 500 has a second shoulder 502, with which the plug contact housing rests on the edge side of the sub-accommodation area 204 that faces the sub-accommodation area 301 of the system cover 300. Furthermore, the two vertical side walls of the sub-accommodation area 204 are shaped as thickened protrusions 205 and 206 to form latching edges. The vertical side walls of the sub-accommodation area 301 of the system cover 300 are designed as latching arms with corresponding latching edges. In order to establish a connection between the system cover 300 and the bearing cover 200, the latching arms 302 are fixed in a positive-fit manner by latching behind the latching edges of the protrusions 205 and 206, as shown in FIG. Fig.11 The plug contact housing 500 is fixed in the receiving area 400 . In addition, the plug contact housing 500 is supported on the upper edge side of the receiving sub-area 204 via the second shoulder 502 .

[0036] The plug contact housing 500 is fixed in the receiving area 400 in a positive-fit manner in the electrical line 11 held therein, because the plug contact housing itself has a cross-sectional shape that corresponds to the cross-sectional shape of the non-circular receiving area 400 and is thus fixed in the receiving area 400 in a non-rotatable manner relative to the longitudinal axis of the plug contact housing. In addition, during the insertion of the external plug contact, the plug contact housing 500 is supported on the front edge 401 of the receiving area 400 via the first shoulder 501, so that the connection point between the plug contact housing 500 and the electrical line 11 is not stressed. In the same way, the positive-fit connection of the plug contact housing 500 in the receiving area 400 can also be provided in the opposite direction to the insertion direction, i.e. in the removal direction of the external plug contact.

[0037] The additionally provided plug contact housing 500 and its fixing in the receiving area 400 simplify the contacting, i.e. the installation of the seat belt retractor itself and the installation of the seat belt retractor in the vehicle. In addition, the contacting is further improved because the electrical line 11 is no longer stressed during the contacting. Furthermore, the plug contact housing 500 fixed in the receiving area 400 basically releases the contact points of the electrical line 11 because the plug contact housing 500 is supported in the receiving area 400 and all reaction forces act in the receiving area 400.

Claims

1. A seat belt retractor, comprising: - a rotatably mounted belt shaft (20); and and - an electrically actuatable locking device (100) which, when actuated, directly or indirectly locks the belt shaft (20) in the extension direction; and - an electrical circuit (11) for contacting the locking device with an external power source and / or a control device, wherein - providing a system cover (300) and a bearing cover (200), and - the bearing cover (200) has a holder (201) for the electrical locking device (100), and - the system cover (300) covers the bearing cover (200) and the electrical locking device (100) held thereon from the outside in the installed position, It is characterized in that The system cover (300) and the bearing cover (200) each have a sub-accommodation area (301, 204) which complement each other in the installed position of the system cover (300) and the bearing cover (200) in order to form a receiving area (400) for a plug contact housing.

2. The seat belt retractor according to claim 1, characterized in that: The plug contact housing (500) can be fixed in the receiving area (400) in a positive-locking manner along and / or against an insertion direction predetermined by the plug-in contact housing (500).

3. The seat belt retractor according to claim 1 or claim 2, characterized in that: The plug contact housing (500) can be fixed in the receiving area (400) in a positive-fit manner with respect to a rotational movement about a rotational axis oriented parallel to the longitudinal axis of the electrical line (11).

4. The seat belt retractor according to claim 3, characterized in that: The receiving area (400) has a non-circular, preferably quadrilateral, particularly preferably square, shape in a plane oriented perpendicularly to a predetermined insertion direction of the plug contact housing (500).

5. The seat belt retractor according to any one of claims 1 to 4, characterized in that: The receiving area (400) has a shape encoding which defines the arrangement and / or orientation of the plug contact housing (500).

6. The seat belt retractor according to any one of claims 1 to 5, characterized in that: The plug contact housing (500) protrudes from the receiving area (400) and is supported by a first shoulder (501) on the outer edge (401) of the receiving area (400).

7. The seat belt retractor according to any one of claims 1 to 6, characterized in that: The plug contact housing (500) is supported via a second shoulder (502) on at least one of two mutually facing edge sides of the partial receiving area (301, 204).

8. The seat belt retractor according to any one of claims 1 to 7, characterized in that: The two sub-receiving areas (301, 204) are connected to each other via a latching connection.

9. The seat belt retractor according to any one of claims 1 to 8, characterized in that: - a control disc (21) is provided which is rotatably mounted on the belt shaft (20) or on the bearing cover (200), and The electrically actuatable locking device (100) has a housing (1) with a base plate (15) and a vertical first leg (16), and - has a locking lever (2) which is pivotally mounted in a pivot bearing of the vertical first leg (16) and has a steel plate (5), and - the electrically actuable locking device (100) stops the control disc (21) from moving relative to the belt shaft (20) by means of the engagement of the locking rod (2) with the toothed portion of the control disc (21) and thereby forces the locking pawl to move, during which the locking pawl engages with the toothed portion of the belt retractor fixed to the vehicle and locks the belt shaft (20) in the extension direction.

10. The seat belt retractor according to claim 9, characterized in that: - The locking lever (2) has a lever arm (22) protruding outward from the first leg (16), on which a first spring (4) acts, which preloads the locking lever (2) into a position in which the locking lever engages with the toothing (26) of the control disk (21) with a locking tip (25) arranged at the end of the locking arm (23).

11. The seat belt retractor according to claim 10, characterized in that: The locking device (100) comprises an electromagnet (3) arranged in the housing (1), which applies a force to the locking rod (2) by energizing the locking rod, through which the locking rod is pulled out of the toothed portion (26) of the control disk (21) with the locking tip (25).

12. The seat belt retractor according to any one of claims 1 to 11, characterized in that: The plug contact housing (500) is dimensionally stable and has a non-circular outer shape corresponding to the shape of the receiving area (400).

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