• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Automatic locking belt retractor comprising: -a belt shaft with a belt shaft body (13) and a section head (14); -a locking device with a locking pawl mounted on the section head ( 14), which, upon activation, is introduced into a set of teeth fixed to the vehicle in order to lock the belt shaft, -a force-limiting device arranged in the force transmission path of the belt-shaft body (13) to the locking pawl, - the profile head (14) having a support portion (12) and an insertion portion (18) fixedly connected in rotation to the support portion (12), - insertion portion (18) having a greater resistance to deformation than the support portion (12), and forming the force connection between the locking pawl and the force-limiting device when the belt shaft is blocked. Figure for the abstract: Fig. 1
    公开号:FR3078516A1
    申请号:FR1902140
    申请日:2019-03-01
    公开日:2019-09-06
    发明作者:Michael Strutz；Stefan Suhr；Christopher Werner
    申请人:Autoliv Development AB；
    IPC主号:
    专利说明:

    Description
    Title of the invention: Belt retractor with automatic locking for a motor vehicle seat belt device The present invention relates to a belt retractor with automatic locking for a motor vehicle seat belt device.
    Seat belt devices in motor vehicles are used to restrain an occupant in the event of an accident in order to avoid serious injury. In this case, the seat belt devices include a seat belt, which is fixed integrally to the vehicle, at one end, by an end fitting, and is fixed at the other end on a shaft. of a belt retractor fixedly attached to the vehicle. In addition, a movable belt tab is provided on the seat belt, which can be locked to achieve a 3-point geometry in a loop also fixed integrally to the vehicle.
    The belt retractor can be blocked by means of a blocking device which can be activated by a sensor device sensitive to the vehicle and / or to the belt in the event of an accident, in the event that a predetermined acceleration value of the speed of unwinding of the belt strap or predetermined deceleration values of the vehicle to avoid any further unwinding of the seat belt, so that the occupant is then retained. The locking device comprises a locking pawl, which can be activated by the sensor device to engage in a toothing of the belt retractor fixedly attached to the vehicle. In addition, it is usual to provide, in the belt retractor, one or more parallel or series-acting force limitation devices, which allow, in the event of a blocked belt shaft, to maintain an unwinding of the strap seat belt limited in additional force according to a predetermined force limitation characteristic, and thus reduce the weight of the occupant in the event of restraint.
    To this end, the belt shaft is composed of two parts and includes a profile head on which the locking pawl is mounted, and a belt shaft body on which the seat belt is wound. The force limiting devices are then arranged between the profile head and the body of the belt shaft and are activated by blocking the profile head by means of the locking pawl and the subsequent exceeding of the force of the profile. unwinding of the belt strap defined by the force limiting devices.
    A proven embodiment of a force limiting device is a torsion bar, which passes through a cavity in the body of the belt shaft and is fixedly connected in rotation, by one end, to the body of the belt shaft and, at the other end, at the head of the profile. The force limitation level is defined in this force limitation device by the plastic deformation limit of the torsion bar in a moment of rotation acting on the longitudinal axis of the torsion bar. Such a belt retractor is known, for example, from document EP 2 409 882 A1.
    According to document JP 5557367 B2, it is also usual to provide, in the belt retractor, a second force limiting device acting parallel to the torsion bar.
    The profiled head can also be used to store the belt shaft and has a complex shape to guide and store the locking pawl. In addition, the locking pawl bears, in the locked position, on the profiled head, so that the profiled head must have sufficient strength to absorb the reaction forces which it supports, so that it does not deform not in the event of a charge and is also not destroyed in extreme cases. On the other hand, there is a fundamental effort to manufacture the profile head in large series in the most profitable way possible. In this context, the profile head is made as a molded or sintered part made of a metal, preferably ZAMAK.
    In this context, the invention aims to provide an automatic locking belt retractor for a seat belt device of a motorized vehicle with a two-part belt shaft with a belt shaft body and a profile head and a force limiting device disposed therebetween, which can be manufactured inexpensively and designed in an improved manner compared to the requirements described above.
    The objective is achieved by an automatic locking belt retractor as described below. Various preferred embodiments of the invention can be found in the figures and the associated description.
    One aspect of the invention relates to an automatic locking belt retractor for a motor vehicle seat belt device, comprising:
    -a two-part belt shaft with a belt shaft body and a profile head, and
    a blocking device with a blocking pawl mounted on the profile head which, when the blocking device is activated, is inserted into a toothing fixedly attached to the vehicle in a locked position in order to block the shaft belt in a direction of unwinding of the belt strap, and
    -a force limiting device installed in a force transmission path from the belt shaft body to the locking pawl, characterized in that
    -the profile head is formed in two parts with a support part and an insertion part fixedly connected in rotation to the support part, -the insertion part has a higher resistance to deformation than that of the support part, and forms the force connection between the locking pawl and the force limiting device when the belt shaft is locked.
    It is thus proposed that the profile head is formed in two parts with a support part and an insertion part connected in a fixed manner in rotation to the support part, the insertion part having resistance to deformation greater than that of the support part and forming the force connection between the locking pawl and the force limiting device when the belt shaft is locked.
    Thanks to the proposed solution, the belt reel can be designed in an improved manner compared to the defined requirements, the profile head being formed of two parts, the support part being designed specifically with respect to storage and guidance of the locking pawl, the insertion part being designed specifically to receive and transmit the reaction forces. The functions of storing and guiding the locking pawl are thus practically decoupled from the force transmission function. To this end, the insertion part specifically has a higher resistance to deformation than that of the support part and forms, in the locked position of the locking pawl, the force connection between the locking pawl and the limiting device. by force. The force exerted by the belt shaft body is preferably introduced via the insertion part passing through the support part, preferably directly via the locking pawl in the teeth fixed so attached to the vehicle. Thus, the support part of the profile head can, in relation to the choice of material, the manufacturing process and in particular in relation to the molding process and the associated costs, be optimized without having to take account of the reaction forces to be supported . The assembly of the two-part profile head and the insertion part thus forms a hybrid system, which can be improved in accordance with requirements.
    Advantageously, the locking pawl is pivotally mounted on the support part in a pivoting plane, and
    - the insertion part projects into the pivot plane.
    It is thus proposed that the locking pawl is pivotally mounted on the support part in a pivot plane, and that the insertion part enters the pivot plane. The pivoting plane is defined by the pivoting movement produced by the locking pawl from the non-locking position to the locking position by insertion in the toothing also fixed to the vehicle and disposed in the pivoting plane. The pivot plane is preferably aligned perpendicular to the axis of rotation of the belt shaft. Due to the proposed arrangement of the insertion part, the locking pawl therefore bears, in a plane, both on the teeth fixedly attached to the vehicle and on the insertion part. The reaction forces received by the insertion part therefore act in the same plane as the blocking forces acting between the blocking pawl and the teeth fixed to the vehicle. In other words, the locking force is introduced from the toothing fixedly attached to the vehicle on the locking pawl without deviation in the insertion part.
    Advantageously,
    -the insertion part has a fixing section, and
    -the support part has a second recess whose shape corresponds to that of the fixing section, recess in which the insertion part comes into contact with the fixing section to form a connection by form complementarity.
    It is thus proposed that the insertion part has a fixing section, and that the support part has a second recess whose shape corresponds to that of the fixing section, recess in which the insertion part comes engaged with the attachment section to form a shape complementarity connection. By the proposed solution, the insertion part and the profile head form an assembly fixed in rotation until the force limiting device is activated. If the insertion part is also fixedly rotatably connected to the body of the belt shaft, it also serves to establish a fixed, rotational connection of the profile head with the body of the belt shaft up to at the force limitation level defined by the force limitation device. Since the insertion part is deliberately designed and arranged in the area of the fastening section to receive the reaction forces, the locking of the belt shaft is thus effected reliably and without stress for the support part of the profile head.
    In this case, preferably, the fixing section and the second recess are in the shape of a star. Thanks to the proposed solution, a very solid and as directionally neutral as possible assembly with a large surface area of the support part can be produced with the support part.
    It is further proposed that the locking pawl be mounted in a first recess of the support part, and that the first recess has an opening through which the locking pawl rests on the insertion part. The first recess has a particular contour by which the movement of the locking pawl in the locked position is, among other things, controlled and guided. To this end, the locking pawl must necessarily rest, in the different positions, on one or more walls of the first recess, so as not to be able to carry out uncontrolled or unwanted movements. According to the invention, at least one wall of the first recess, so important for guiding the locking pawl, is now interrupted by an opening, so that the locking pawl, via the support part, preferably rests directly against the insertion part or may come into abutment against it.
    It is also proposed that the activation of the force limitation device is limited by a stop, which makes it possible to obtain a force limitation characteristic or a limit switch characteristic (LLS Lever Lock System) progressive.
    It is further proposed that the insertion part has a coaxial thread in the assembled state relative to an axis of rotation of the belt shaft body, thread with which the insertion part is screwed to allow a relative rotational movement with a form thread corresponding to the shape of the belt shaft body. The threaded connection creates an axial connection of the insertion part with the body of the belt shaft. In addition, it is possible, by an appropriate choice of the direction of the thread, that the body of the belt shaft performs a predetermined relative rotational movement and that the axial movement thus formed is against the insertion part when the device force limitation is active.
    Thus, the stop can, in this case, be preferably arranged so as to limit the relative rotational movement allowed by the thread, that is to say that the stop limits the relative rotational movement made possible by threading. This can be done, for example, by pulling the wire pairing on the block or by providing a stop blocking the additional rotational movement in one of the threads.
    It is also proposed that the insertion part be designed as a steel part, which can preferably be produced by cold forming. The insertion part can thus, due to the very high strength of the steel and in particular the much higher resistance compared to the sintered parts and to the ZAMAK parts in particular, withstand much more force than the profile head , which can be produced, as a sintered part, cost-effectively with a very complex shape. In addition, the thread of the insertion part can therefore already be formed during the manufacture of the insertion part, without requiring additional finishing work.
    It is further proposed that the insertion part be pressed on parts projecting into openings corresponding to the shape of the support part. The insertion part and the support part thus form an assembly and can also be considered as a profile head in two parts as a fixed assembly in rotation up to a certain force.
    The invention will be explained below with reference to the preferred embodiments with reference to the attached figures. Thus, [fig.l] shows an automatic locking belt retractor according to the invention with a torsion bar in a first view in exploded view; and [fig.2] shows an automatic locking belt retractor according to the invention with a torsion bar in a second exploded view; and [Fig. 3] shows a locking pawl resting on the securing section of the insertion part in a locking position.
    In Figures 1 and 2, an automatic locking belt retractor according to the invention can be recognized in different views in exploded view. The belt retractor has a U-shaped frame, not shown, with two opposite tabs, in each of which an opening is provided. The belt retractor is fixed integrally to the vehicle through the frame, either on the vehicle structure or on a vehicle seat. In addition, the belt retractor has a two-part belt shaft body, provided with a belt shaft body 13, a profile head 14 and a torsion bar 16, which is mounted in the openings of the frame legs. The belt shaft body 13 serves to wind up a seat belt, while, on the profile head 14, a first recess 19 is provided, in which a locking pawl 15 to be recognized only in FIG. 3 is mounted swivel. The torsion bar 16 is fixed in rotation at a first end with the belt shaft body 13 and at a second end with the profiled head 14, and forms a force limiting device described in more detail below.
    The locking pawl 15 is part of a locking device and is actuated by an unrecognizable detection device sensitive to the vehicle and / or the belt, whereby it is forced to pivot in a toothing 25 fixed so secured to the vehicle partially recognizable in Figure 3 of an opening of the frame, whereby the belt shaft is blocked in turn to prevent any further unwinding of the seat belt. Then, the seat belt can only be pulled when the unwinding force of the belt strap defined by the plastic deformation limit of the torsion bar 16 is exceeded, and the torsion bar 16, by a plastic deformation around its longitudinal axis, allows relative rotation of the belt shaft body 13 relative to the blocked profile head 14. Up to now, the seat belt in this configuration corresponds to the current state of the art.
    According to the invention, a two-part profile head 14 improved with a support part 12 and an insertion part 18 is provided in the belt winder. The first recess 19 is provided here on the support part 12 and is formed by one or more walls of defined shape. The locking pawl 15 rests in the first recess 19 and is controlled mechanically, inter alia, by the shape of the first recess 19 during the retraction movement in the teeth fixed to the vehicle 25. Thus, the shape of the first recess 19 is of particular importance for the proper functioning of the belt retractor and in particular for the proper functioning of the locking device and is subject to very high requirements in terms of dimensional accuracy. In addition, the support part 12 has, on its underside, a second star-shaped recess 22, which is delimited by circular segment sections 29 spaced apart in the circumferential direction of the support part 12.
    The insertion part 18 has a fixing section 23 also in the shape of a star with serrations or jets projecting radially, which section has a profile identical to that of the second recess 22 in the support part
    12. In addition, the insertion part 18 has a cylindrical extension 26 with a coaxial thread 27 arranged thereon.
    The fixing section 23 of the insertion element 18 and the second star-shaped recess 22 of the support part 12 are dimensioned so that the fixing section 23 extends in the position inserted in the second recess 22 up to the pivoting plane of the locking pawl 15, as can be seen in the sectional view of FIG. 3. The first recess 19 on the support part 12 has a lateral opening 17 arranged in the plane for pivoting the locking pawl 15, opening through which the locking pawl 15 immediately rests on the side of the fixing section 23 of the insertion element 18 or comes into abutment in the locking position. In the case where the insertion part 18 is fixedly connected in rotation to the belt shaft body 13, and the locking pawl 15 is blocked in the toothing 25 fixedly attached to the vehicle, the locking pawl 15 is supported, via the support part 12, by the fixing section 23 of the insertion part 18 and thus placed against the belt shaft body 13. The insertion part 18 thus forms the force connection of the locking pawl 15, via the torsion bar 16, to the body of the belt shaft 13.
    The insertion part 18 is here formed of a steel part having a very high resistance to deformation, while the support part 12 is formed of a sintered part, molded or injection molded from a less expensive material with a lower resistance to deformation than that of the insertion part 18. ZAMAK, or even a non-deformable plastic, are suitable here as dimensionally stable plastic.
    On the insertion part 18, there are further provided two parts 24 projecting axially, which are stamped during assembly in openings 20 and 21 of corresponding and identical shapes of the support part 12 for a tight fit. Thus, the support part 12 forms a solid assembly with the insertion part 18 and can also be called a profile head in two parts 14.
    The insertion part 18 further has a concentric profile opening 28 in the cylindrical extension 26, in which the torsion bar 16 is fixed in rotation with the second end. Thanks to the other first end, the torsion bar 16 is fixed in a known manner in rotation in a profile opening, not shown, of the belt shaft body 13. The insertion part 18 is arranged with the fixing section 23 concentrically with the belt shaft body 13, so that the belt shaft body 13 rotates concentrically with the insertion portion 18 during the force limited belt strap unwinding movement.
    In the belt shaft body 13, an additional profile opening 10 is provided, an opening in which a threaded insert 11 is fixed in rotation with an internal thread. The insertion part 18 is screwed with the thread 27 voluntarily incomplete, therefore for only a few turns, into the internal thread of the threaded insert 11.
    This results in a force limiting characteristic or a progressive stopping characteristic according to the following principle. Firstly, the two-section profile head 14 is locked by the control of the locking pawl 15 in the toothing 25 fixedly attached to the vehicle. If the unwinding force of the strap exceeds the force limitation level defined by the force limiting device and the torsion bar 16, the torsion bar 16 is concretely twisted around its longitudinal axis, because the end of the torsion bar 16, being connected to the insertion part 18, therefore to the profile head 14, is blocked by the activation of the locking device, while the other end of the torsion bar 16, connected to the body of the belt shaft 13, rotates in the direction of the unwinding of the belt strap. In this case, the insertion part 18 and the support part 12 form a firm assembly, and the insertion part 18 bears, with the fixing section 23 by means of the locking pawl 15, on the teeth. fixed integrally to the vehicle 25, as can be seen in FIG. 3. At the same time, the belt shaft body 13 rotates relative to the insertion part 18, whereby the shaft body belt 13 is screwed with the threaded insert 11 on the thread 27 of the insertion part 18. Therefore, the belt shaft body 13 is pulled towards the insertion part 18. This movement of relative rotation is possible until the belt shaft body 13 or the threaded insert 11 located on the front side of the insertion part 18 or the belt shaft body 13 comes up to at the stop and is thus pulled (e) on the block. The front side of the insertion part 18, the belt shaft body 13 or the threaded insert 11 thus form a stop to limit the rotational movement of the belt shaft body 13 relative to the part of insertion 18. After reaching the stop, the force limiting device is deactivated due to the relative rotational movement thus blocked, the torsion bar 16 is practically bridged and can no longer be plastically deformed. Due to the relative rotational movement thus blocked, the unwinding force of the belt strap and the occupant restraining force suddenly increase until reaching a progressive force limitation characteristic or an LLS force limitation characteristic.
    The insertion part 18 is deliberately formed of a material having a resistance greater than that of the support part 12 and is used for the transmission of force, while the support part 12 is preferably made of a material plastic in a manufacturing process, which allows cost-effective manufacturing, such as, for example, a plastic injection molded part or a sintered part. Due to the two-part construction of the profile head 14, it is also possible to avoid undercuts and the complicated design of the resulting tool, which further reduces manufacturing costs.
    In addition, the support portion 12 can be made from a material having more favorable rolling and sliding properties, without taking into account the transmission of force during blocking and in particular when activating the force limiting device. As a result, the storage of the belt shaft can be improved on this side.
    权利要求:
    Claims (1)
    [1" id="c-fr-0001]
    [Claim 1] [Claim 2] [Claim 3] [Claim 4]
    claims
    Self-locking belt retractor for a motor vehicle seat belt device, comprising:
    a two-part belt shaft with a belt shaft body (13) and a profile head (14), and
    a blocking device with a blocking pawl (15) mounted on the profile head (14), which, upon activation, is inserted into a toothing fixedly attached to the vehicle (25) in a locked position in order to lock the belt shaft in the direction of unwinding of the belt strap, and
    -a force limiting device installed in the force transmission path of the belt shaft body (13) to the locking pawl (15), characterized in that
    -the profile head (14) is formed in two parts with a support part (12) and an insertion part (18) fixedly connected in rotation to the support part (12),
    the insertion part (18) has a higher resistance to deformation than that of the support part (12), and forms the force connection between the locking pawl (15) and the force limiting device when the belt shaft is blocked.
    Self-locking belt retractor according to claim 1, characterized in that
    the locking pawl (15) is pivotally mounted on the support part (12) in a pivoting plane, and
    -the insertion part (18) projects into the pivot plane. Self-locking belt retractor according to one of the preceding claims, characterized in that
    -the insertion part (18) has a fixing section (23), and -the support part (12) has a second recess (22) whose shape corresponds to that of the fixing section (23), recess wherein the insertion part (18) comes into contact with the fixing section (23) to form a shape complementarity connection. Self-locking belt retractor according to claim 3, characterized in that
    -the fixing section (23) and the second recess (22) are in the shape of a star.
    [Claim 5] [Claim 6] [Claim 7] [Claim 8] [Claim 9] [Claim 10]
    Self-locking belt retractor according to one of the preceding claims, characterized in that
    the locking pawl (15) is mounted in a first recess (19) of the support part (12), and
    -the first recess (19) has an opening (17) through which the locking pawl (15) rests on the insertion part (18). Self-locking belt retractor according to one of the preceding claims, characterized in that
    -activation of the force limiting device is limited by a stop.
    Self-locking belt retractor according to one of the preceding claims, characterized in that
    the insertion part (18) has a coaxial thread (27) in the assembled state with respect to an axis of rotation of the belt shaft body (13), thread with which the insertion part is screwed to allow a relative rotational movement with a thread corresponding to the shape of the belt shaft body (13).
    Self-locking belt retractor according to claim 6 and according to claim 7, characterized in that
    -the stopper limits the relative rotational movement made possible by the thread (27)
    Self-locking belt retractor according to one of the preceding claims, characterized in that
    -the insertion part (18) is designed as a steel part. Self-locking belt retractor according to one of the preceding claims, characterized in that
    -the insertion part (18) is pressed on parts (24, 26) projecting into openings (20, 21) corresponding to the shape of the support part (12).
    类似技术:
    公开号 | 公开日 | 专利标题
    FR3078516A1|2019-09-06|Self locking belt retractor for a motor vehicle seat belt device
    JP5539502B2|2014-07-02|Seat belt retractor for automobile safety belt
    EP0662415B1|1999-03-17|Energy absorbing device with axial guide for the steering column of a motor vehicle
    US6598822B2|2003-07-29|Webbing retractor
    FR2836662A1|2003-09-05|MOTOR VEHICLE SEAT WITH UNILATERAL LOCKING MECHANISM AND RETAINER
    AU2003241635A1|2004-03-18|Webbing retractor
    FR2613991A1|1988-10-21|SEAT BELT RETAINING SYSTEM FOR PASSENGERS OF MOTOR VEHICLES
    FR2481604A1|1981-11-06|AUTOMATIC LOCKING REEL FOR MOTOR VEHICLE SAFETY SEAT BELTS
    FR2834870A1|2003-07-25|FIXING LOOP WITH SELF-LOCKING AND ADJUSTMENT OF A STRAP
    US10011246B2|2018-07-03|Belt tensioner for a safety belt system
    FR2507901A1|1982-12-24|TIE STRING MECHANISM FOR MOTOR VEHICLE SAFETY BELT
    JP2003137065A|2003-05-14|Webbing winding device
    WO2017103365A1|2017-06-22|Multi-position locking device for a motor vehicle rear seat backrest
    EP0296913B1|1991-11-06|Retractor for safety belt
    FR2672022A1|1992-07-31|SEAT BELT REEL.
    FR2554399A1|1985-05-10|ANTI-THEFT DEVICE FOR AUTOMOBILES
    US6659383B2|2003-12-09|Seat belt retractor
    FR2478471A1|1981-09-25|Safety belt winding reel - has one spring held cocked after unwinding predetermined length of belt
    FR2822782A1|2002-10-04|Clamping device for automobile steering column comprising steering shaft rotating in tube held in support unit by locking unit, controlled by rotating around clamping axis, and damped by braking system between locking and support units
    EP1847424A1|2007-10-24|Self-locking winder for an automobile seat belt and safety system comprising such a winder
    FR2476491A1|1981-08-28|Reel for vehicle safety belt - has central spindle with split metal core embedded in plastics outer cover
    FR3019847A1|2015-10-16|ARTICULATION SYSTEM WITH CONTROLLED OPENING SPEED, IN PARTICULAR FOR OPENING OF THE AUTOMOTIVE VEHICLE COVER
    EP2990574B1|2019-04-03|Rear assembly of a vehicle for opening and closing a hatchback
    JP4526631B2|2010-08-18|Seat belt device
    US20170015274A1|2017-01-19|Acceleration sensor and seat belt retractor
    同族专利:
    公开号 | 公开日
    US20190291687A1|2019-09-26|
    JP6751544B2|2020-09-09|
    DE102018106664A1|2019-09-05|
    US10974691B2|2021-04-13|
    FR3078516B1|2021-08-20|
    CN110293933A|2019-10-01|
    JP2019167088A|2019-10-03|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE19681341C1|1995-04-14|2002-08-01|Autoliv Dev|Belt retractor with damped force limiter|
    DE29909252U1|1999-05-27|1999-10-07|Trw Repa Gmbh|Belt retractor with force limiter|
    DE20207385U1|2002-05-10|2002-09-19|Trw Repa Gmbh|Assembly consisting of a belt spool and a locking disc for a vehicle seat belt retractor|
    JP5557367B2|2008-10-03|2014-07-23|オートリブディベロップメントエービー|Seat belt device|
    US7946519B2|2008-11-12|2011-05-24|Tk Holdings Inc.|Pretensioned retractor|
    CN102341279B|2009-03-18|2014-04-16|奥托立夫开发公司|Seatbelt device|
    US9038935B2|2011-03-14|2015-05-26|Tk Holdings Inc.|Progressive load limiter|
    JP6318263B2|2014-10-22|2018-04-25|オートリブ ディベロップメント エービー|Seat belt retractor|CN107215303B|2016-03-21|2021-04-13|天合汽车科技（上海）有限公司|Seat belt retractor, vehicle seat belt and vehicle|
    CN113183914A|2021-04-06|2021-07-30|重庆光大产业有限公司|Reliable coiler is steady and just terminates to limit for force|
    CN112977325A|2021-04-06|2021-06-18|重庆光大产业有限公司|Pawl type force-limiting stopping retractor|
    法律状态:
    2020-03-24| PLFP| Fee payment|Year of fee payment: 2 |
    2020-12-18| PLSC| Search report ready|Effective date: 20201218 |
    2021-03-25| PLFP| Fee payment|Year of fee payment: 3 |
    优先权:
    申请号 | 申请日 | 专利标题
    DE102018203190|2018-03-02|
    DE102018203190.8|2018-03-02|
    DE102018106664.3A|DE102018106664A1|2018-03-02|2018-03-21|Self-locking belt retractor for a safety belt device of a motor vehicle|
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