Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
  • B60R22/00—Safety belts or body harnesses in vehicles
  • B60R22/34—Belt retractors, e.g. reels
  • B60R22/36—Belt retractors, e.g. reels self-locking in an emergency
  • B60R22/405—Belt retractors, e.g. reels self-locking in an emergency responsive to belt movement and vehicle movement
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
  • B60R22/00—Safety belts or body harnesses in vehicles
  • B60R22/34—Belt retractors, e.g. reels
  • B60R22/46—Reels with means to tension the belt in an emergency by forced winding up
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
  • B60R22/00—Safety belts or body harnesses in vehicles
  • B60R22/34—Belt retractors, e.g. reels
  • B60R22/46—Reels with means to tension the belt in an emergency by forced winding up
  • B60R2022/468—Reels with means to tension the belt in an emergency by forced winding up characterised by clutching means between actuator and belt reel

Definitions

• the present invention relates to a belt retractor system or
• the invention relates to a method for securely locking a belt in a belt retractor system.
• the belt pullout i. the bobbin rotation in the unwinding direction to retain a falling in the belt vehicle occupants.
• belt retractor systems in normal operation, on the other hand, permit trouble-free coil rotation in the unwinding and winding direction of the belt.
• the present application also relates to belt retractors with a "floating" spool, i. with a movable between a main locking position and a release position coil.
• Such systems are known, for example, from DE 60 2004 004 769.
• the main locking position rotation of the spool in the belt discharge direction is not possible, i. when the coil is in the main locking position, the belt retractor system fulfills its actual safety function.
• the release position however, the coil can be rotated in both directions. The belt is thus released in this position of the coil.
• the holder of the floating coil can in different ways and
• the coil can be guided, for example, in slide-like positive guides along a predetermined path or be mounted pivotably.
• the movement of the spool from the release position into the main locking position takes place in the known Gurtaufrollersystemen on the train of the belt itself, whereas the movement of the spool back into the release position due to its own weight or with the help of eg spring-based reset devices.
• the holder or storage of the spool in Gurtaufrollersystemen usually takes place in a camp of a locking mechanism made of plastic and an abutment.
• sensors are also typically integrated, which can also block the rotation of the coil in the extension direction, so that the coil can be performed in an accident over a train of the belt in the main locking position to protect the vehicle occupant from impact damage.
• Safety belt systems are also often provided with other functions. Such additional functions are in particular a pretensioning function and a load or force limiting function.
• Load limiting devices which are known in particular in the form of coils with torsion bar, serve to allow a limited coil rotation in Gurtausgaberaum at actually blocked coil to reduce the acting on the inertia in the belt falling vehicle occupants peak loads.
• optimal load limitation for the vehicle occupants is only achieved by the combination of the load limiting device with a tightening or pretensioning of the belt.
• Tensioning devices enable within a short time of e.g. About 10 ms after the detection of an accident or dangerous situation, drive the spool in the belt take-up direction in order to tighten the seat belt so that it can optimally fulfill its restraint function.
• Fig. 1 shows a Gurtaufrollersystem according to a first embodiment of the present invention in a perspective view.
• Fig. 2 is two perspective views of a gate member for use in a belt retractor system according to an embodiment of the present invention.
• Fig. 3 is a perspective view of a Verrieglungsglied for securing the
• Embodiment of the present invention can be used.
• Fig. 4 shows a Gurtaufrollersystem according to an embodiment of the present invention in a perspective view.
• FIG. 5 to Fig. 7 detailed perspective views of the storage of a
• Fig. 8 shows a Gurtaufrollersystem according to another embodiment of the present invention in a perspective view.
• FIG. 9 shows a detail of the Gurtaufrollersystem of Fig. 8 according to a
• Embodiment of the present invention in a plan view.
• Fig. 10 is an enlarged detail of Fig. 8 with a detailed
• a control member in the Hauptverrieglungsposition according to an embodiment of the present invention is a control member in the Hauptverrieglungsposition according to an embodiment of the present invention.
• the belt retractor system has, according to one embodiment, a
• a spool for winding and unwinding a belt having a winding axis which is movable between a main locking position and a release position; a Ein penetrateglied, which is releasable from a rest position, and through which the coil in
• Abwickeloplasty is blocked or restrictable; as well as a triggerable
• Biasing means for tightening the belt, wherein by the release of the
• the Ein is releasable from its rest position and wherein the
• a control member in an Endruhelage in which the Ein horrglied the movement of the coil is not restricted is movable when the coil is guided in the main locking position.
• the release of the gate member by the triggering of the pretensioner ensures that the gate member can perform its function whenever required by the deformations that may occur. This ensures a 100% locking of the belt after tightening. If the Ein horrglied is in Endruhelage, the belt is releasable again, so that the belt after a possible accident can be loosened or removed again, ie can perform its normal functions undisturbed by the Ein tenuglied.
• the Gurtaufrollersystem a Verrieglungsglied which holds the Ein penetrateglied in its rest position or rest position, and which is actuated by the triggered biasing means for releasing the Ein horrglieds.
• the release of the control member is effected by a movement of the coil when it is driven by the biasing means.
• the input member is activated when a deformation of the system occurs that actually requires or makes regulation by the Ein 1500glied.
• the spool of Gurtaufrollersystems on a winding axis which between a
• Main locking position and a release position is movable, wherein the winding axis is forcibly guided in the direction of the main locking position by the Einclairglied or forced.
• the coil is mounted in a locking mechanism with at least one sensor, wherein the coil is forcibly guided by the interaction of Ein horrglied and locking mechanism in the direction of the main blocking position. After its release from the rest position controls the Ein horrglied thus in the movement of the coil, wherein it exerts a force on the coil such that the coil or winding axis when the belt extension in one, forced in conjunction with the locking mechanism Movement is guided or controlled in the main locking position and the belt is thus blocked.
• the rotation of the coil is about the release of the Einberichtglieds from the rest position
• the input member can therefore also be referred to as a blocking member.
• the Ein horringlied is pivotally mounted and exerts a force on the coil after swinging out of the rest position or rest position.
• the Gurtaufrollersystem a fixedly connected to the sprocket sprocket and a
• Main locking position engages, and wherein the sprocket for the correct engagement in the tooth contour can be guided by the released insertion member in the direction of the tooth contour.
• the correct position intervention of the sprocket in the tooth contour avoids a not immediately latching meeting of sprocket and tooth contour. It will thus be, for example, a
• control member preferably has a tooth for
• the coil is arranged between the insertion member and the tooth contour. This ensures that the Ein thoroughlyglied can exert a force on the tooth contour and thus on the coil after releasing the coil in the direction of
• the belt can be further tightened after the control of the Ein horrglieds in the coil or the sprocket, but virtually no longer be pulled out, so that a vehicle occupant can be restrained in a very early accident phase of the belt.
• the Ein horringlied and the teeth of the ring gear and the tooth contour of the frame are designed such that the winding axis forcibly guided by the Ein horrglied up to an overlap of the toothing of the ring gear and the toothing of the tooth contour of the frame is movable , Reaching the main locking position then takes place through the interaction of both gears and the Gurtzug.
• the Ein thoroughlyglied and the teeth of sprocket and the tooth contour are designed so that the winding axis is forcibly guided by the Ein horrglied up to the main locking position is movable
• the Einticianglied in the rest position is preferably biased, particularly preferably spring-biased.
• Belt retractor system 100 includes a spool 30 for winding and unwinding a belt, not shown, which is kept floating within a housing having a substantially U-shaped steel frame 10.
• the actual storage of the coil 30 is effected by a locking mechanism to be fastened to the left frame leg 11 of the frame 10 and by an abutment which is to be fastened to the left frame leg 11 of the frame 10.
• a locking mechanism to be fastened to the left frame leg 11 of the frame 10 and by an abutment which is to be fastened to the left frame leg 11 of the frame 10.
• the sprockets 37 and 38 each have a plurality, in the example shown 24, teeth with typically asymmetrical tooth flanks.
• the frame legs 11 and 12 each have an opening 13 in which the blocking gears 35 and 36 can rotate with the coil 30 about a rotation axis or winding axis 40 of the coil 30.
• a counter-toothing or tooth contour 15 or 16 is incorporated in each of the openings 13, in which the sprockets 37 and 38 engage in a main locking position of the coil 30 and the winding shaft 40 substantially form-fitting manner. In this position, the belt can not be unrolled and thus the vehicle occupant retained.
• Sprockets 37 and 38 engage in the main locking position in accordance with the frame legs 11 and 12 fixed tooth contours 15 and 16 respectively.
• the coil 30 and the rotation axis 40 is in normal operation, however, in a release position in which the coil 30 is rotated in both directions about the axis 40 and thus the belt up or can be unwound.
• the coil 30 and the winding shaft 40 must therefore be transferred from the release point in the Hauptverrieglungs- position or main blocking position, which can usually be achieved by the interaction of locking mechanism and belt extraction. In essence, this is done in that the locking mechanism blocks the coil 30 with an accelerated unwinding of the belt, so that the blocked coil 30 is pulled by the Gurtzug in the main locking position.
• On the frame 10 of the housing is also inside a
• the carrier plate 20 is a cast body, for example made of aluminum.
• the strands of substantially identical running drive represent a known prestressing device for tightening the belt.
• the pyrotechnic gas generator of the pretensioner is located behind the mounting sleeve 14 and is also not visible. After the detection of a dangerous situation, the coil in the winding direction, which runs counterclockwise in this and in all following figures, is driven around the winding axis 40 by igniting the propellant charge of the pretensioning device become.
• the pretensioner exerts not only a torque on the spool 30 during belt pretensioning but also a force by which the rotational axis 40 of the spool 30 is forced out of the release position in a direction away from the main blocking position. In this direction is in the openings 13 of the left frame leg 11, a mating 17 in which a Einberichtglied 50 biased and rests secured by a locking member or locking member 60.
• the coil 30 is mounted via a pin 33 in a plastic locking mechanism and in a plastic counterpart, not shown. These bearings can not accommodate the relatively large forces in the range up to a few kN exerted by the biasing means on the spool 30 without deformation. Therefore, the rotating winding shaft 40 is pressed in the direction of the recess 17. The winding axis 40 is thus deflected in the direction of the recess 17 from the Gurtuzaposition. As a result, the locking member 60 is displaced from the position which is connected to the bobbin 30, rotating in the winding direction and deflected in the direction of the recess 17, out of the position securing the insertion member 50 into a release position. As a result, the input member 50 is released. In other words, the Einberichtglied 50 is released by a mechanical connection to the biasing device, here by the biasing device driven by the coil 30 and by the non-rotatably connected to the coil 30 blocking gear 35.
• the biased Einclairglied 50 from the rest position and controls the movement of the coil 30 and winding axle 40 a.
• the insertion member 50 can typically be supported on the frame 10 in which the tooth contours 15, 16 are formed. Due to the interaction of the Einclairglieds 50 with the plastic locking mechanism, the winding shaft 40 is force-fed at the onset of the belt in the direction of the main blocking position even with deformed locking mechanism.
• the coil 30 is typically arranged between the insertion member 50 and the tooth contour 15. In the main blocking position, the belt pullout is blocked and secured to the vehicle occupant.
• the belt can now be extended only at defined high forces, if a lying in the axis of rotation 40 behind the pin 33, optional torsion bar allows such a force limit.
• FIG. 2 are two perspective views of a preferred embodiment
• the Ein horrglied 50 has a Assembly securing 53, a pin 51 for supporting the Ein horrglieds 50 and for receiving a spring which is biased in a recess 54.
• the insertion member 50 of FIG. 2 is a latching pawl, the tip 52 of which is shaped such that the tip 52 engages in the ring gear after release of the insertion member 50 from the rest position Spool in the winding is not blocked to allow a further belt tightening, the Gurtab winding direction but is substantially blocked.
• a vehicle occupant is already secured in an early accident phase.
• Fig. 3 shows that arranged at the edge of the opening 13 of the frame leg 11
• Locking member 60 for securing and releasing the Ein horrglieds 50 of FIG. 1 in a detailed perspective view.
• the locking member 60 has groove-like structures 61 for increasing the frictional resistance with the teeth of the locking gear (not shown) 35 so that the locking member 60 can be displaced by locking gear 35 to unlock the Ein horrglieds 50 safe or release.
• Belt retractor system 100 is similar to belt retractor system 100 of FIG. 1, wherein like elements have been given the same reference numerals. This agreement also applies to the other figures, unless explicitly stated otherwise.
• the belt retractor system 100 in Fig. 4 shows in addition to that of Fig. 1, a locking mechanism 90 which is fixed to the left frame legs 11.
• the locking mechanism 90 includes two inertial sensors: a vehicle acceleration sensor and a belt acceleration sensor. Both sensors can block the plastic gear 95. In the vehicle acceleration sensor blocking the plastic gear 95 via a steel ball 91 and a trigger member 92.
• both the sensors of the locking mechanism 90 and the released by the triggering of the biasing device Ein facedglied 50 can lead the coil 30 in the Hauptblockier too.
• FIG. 5 to 7 illustrate in perspective representations assembly and the storage of the detail shown in Fig. 2 Ein horrglieds 50 according to one embodiment.
• Fig. 5 shows a section of the belt tensioner support plate 20 with a recess 21 for receiving a spring and the pin 51 of the Ein horrglieds 50 for spring-biased mounting of the Ein horrglieds 50.
• Fig. 6 shows in an analog section of the left frame leg 11 fastener Gurtstrafferismeplatte 20 with a biasing spring 70 in a biased position.
• the stored in the recess 17 of the frame and mounted in the frame 20 Einberichtglied 50 is shown.
• Verrieglungsglied 60 pivoting out of the spring biased Ein Kunststoffglieds 50.
• the Verrieglungsglied 60 is sensor-controlled, for example. Moved from the coil 30, not shown, to the upper right.
• FIG. 8 shows a further embodiment of a belt retractor system 200 in a perspective view.
• the belt retractor system 200 is shown without housing cover, locking mechanism and frame.
• Belt retractor system 200 is similar to belt retractor system 100 of FIG. 1. It also includes a floating coil 30, not shown, having a winding axle 40 for winding and unwinding a belt.
• the belt can also be tightened by a pretensioning device in the belt retractor system 200. Of the biasing device, however, only the cylinder portion 23 and 24 are visible.
• the belt retractor system 200 has a Einberichtglied 50, which can be released from the rest position shown, and then forcibly leads the winding shaft 40 in the direction of the main locking position.
• the Ein wholly the has completed a predetermined by the winding shaft 40 pivots from its rest position and engages in movement of the spool such that the rotation of the winding shaft 40 is blocked or restricted in Gurtauszugscardi and the winding shaft 40, according to a predetermined by the locking mechanism path, forcibly moved into the main locking position, when the belt engages a force in the extension direction of the belt.
• the Einclairglied 50 is released in this embodiment by a direct mechanical connection to the biasing device, here by the wire 80.
• the Einberichtglied 50 ensures that even with deformed locking mechanism stock correct intervention, ie tooth in tooth
• a pipe connection between the cylinder portion 23 and a locking member of the Ein horrglieds 50 is used to release the Ein horrglieds 50 instead of a wire 80.
• the Verrieglungsglied is displaced by the pressure of the pressed gas through the pipe joint and thereby the Ein horrglied 50 released.
• FIG. 9 a detail of the Gurtaufrollersystems 200 of FIG. 8 according to an embodiment of the present invention is shown in a plan view, wherein the representation of the housing cover and the locking mechanism has been omitted.
• the spool 30 With the spool 30 is a blocking gear 35 rotatably connected to a ring gear 37, wherein the tip 52 of the Ein horrglieds 50 is again designed so that the blocking gear to swing out of the Ein horrglieds 50 from the shown and secured with the wire 80 rest position in Gurtaufwickelraum (opposite clockwise), but in the unwinding (clockwise) is substantially blocked.
• the spring-biased Ein capitaglied 50 exerts a force on the coil 30, so that it is also in deformed locking mechanism or deformed plastic counter bearing, which on the right Frame leg 12 is fixed, is guided in the direction of or in the main blocking position.
• the ring gear 37 engages again in the not shown toothing of the frame to secure the vehicle occupant.
• Fig. 10 shows an enlarged detail of Fig. 8 with a detailed
• Einticianglied 50 by a compressed air connection, which is coupled to the biasing device via a pipe system driven. D. h., By the pyrotechnic charge not only the coil 30 is driven in the winding, but also the Ein juryglied 50 released from the rest position. It can be provided that the Ein juryglied 50 pivots about the pivot point 55 counterclockwise from the rest position. It may also be provided in an alternative embodiment, however, that a correspondingly executed and stored Ein juryglied 50 is pushed by the compressed air in a substantially translational movement from the rest position in the direction of the counter teeth 15 of the frame 10 and so the coil 30 in Directs the direction or in the main blocking position or controls.
• FIG. 1 A shows in a plan view a section of the belt retractor system 100 of FIG. 1, again omitting the illustration of the housing cover and the locking mechanism.
• the coil 30 is with its, passing through the pin 33 and pointing from the plane of the drawing winding axis 40 initially in the release position, and the Einclairglied 50 rests spring biased and secured by the locking member 60 in the rest position.
• the Einclairglied 50 superimposed in a first part 17a of the mating 17 of the left frame leg 10.
• the coil 30 is typically by the locking mechanism in the in In the normal case, a movement of the coil 30 in the direction of the recess 17 is prevented.
• Belt pretensioning initiates the coil 30 is rotated in the counterclockwise direction and at the same time a force F v applied to the coil 30, so that the winding shaft 40 moves in the direction of the recess 17.
• F v applied to the coil 30
• the toothed wheels 39 of the ring gear 37 come into contact with the locking member 60 in order to be able to displace this from the illustrated securing position 60a into a release position 60b.
• the force exerted by the biasing means is so great that the locking mechanism can not prevent the movement of the coil in the direction of the mating 17 and is thereby at least partially deformed.
• the Einclairglied 50 is not held by the Verrieglungsglied 60 shown, but by a release element, for example.
• the type of release of the Ein thoroughlyglieds 50 is irrelevant for the below-described Einberichtn the Einberichtgliedes 50 for guiding the coil 30, however.
• the bias of the Ein horringlieds 50 ensures that the Ein horringlied 50 is reliably pressed against the ring gear 37 and thus after reversing the direction of the rotation of the coil 30 an onset of belt separation is prevented.
• the Ein horringliedes 50 as a detent pawl with freewheel, which can engage in the oblique teeth 39 of the ring gear 37, it is ensured that the coil 30 can rotate until the onset of the belt extension in the winding, but in the unwinding direction is substantially blocked. This ensures optimum occupant protection through the seat belt.
• the ring gear 37 has twenty-four teeth, so that there are 24 different suitable rotation angle or rotation angle ranges for the synchronous intervention or control of the ring gear 37 in the counter teeth 15.
• the plastic gear of the locking mechanism and the spool 30 rotatably connected sprocket 37 the same number of teeth, so that a synchronous driving the sprocket 37 in the counter teeth 15 is also made possible by the sensors of the locking mechanism, if they are not by the Belt tightening are deformed.
• the belt retractor system 100 may also be equipped with two Ein jurygliedern 50. As shown in Fig. 1 IG in a plan view and in Fig. 1 IH in perspective, the Ein horrglied 50, due to the spring bias, pivots in a further embodiment after the leadership of the winding axis 40 toward or in the main locking position on the axis 55 in a different from the rest position Endruhelage a.
• Endruhelage is the upper part 52 of the Ein Kunststoffglieds 50th in a second part 17b of the mating 17 of the frame 10.
• the driving member 50 can no longer influence the movement of the coil 30 in this position. This ensures that the belt can be released again and controlled by the sensors of the locking mechanism.
• Winding shaft 40 in the main locking position of the coil 30 and the associated with the spool 30 sprocket 37 is no longer limited in its pivotal movement, so that the biased Einêtglied 50 can swivel quickly and reliably in the Endruhelage.
• Main locking position of the winding axle 40 is, as already explained, essentially independent of the type of release and therefore runs analogously in a belt retractor system 200 of FIG. 8 with cable release 80.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Automotive Seat Belt Assembly (AREA)

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• 2009
  • 2009-03-20 DE DE102009013923A patent/DE102009013923A1/de not_active Withdrawn
• 2010
  • 2010-03-19 DE DE112010001215T patent/DE112010001215A5/de not_active Ceased
  • 2010-03-19 BR BRPI1012541-8A patent/BRPI1012541A2/pt not_active Application Discontinuation
  • 2010-03-19 WO PCT/EP2010/053648 patent/WO2010106183A1/de active Application Filing

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