WO2013060439A1 - Gurtstraffer für ein sicherheitsgurtsystem - Google Patents
Gurtstraffer für ein sicherheitsgurtsystem Download PDFInfo
- Publication number
- WO2013060439A1 WO2013060439A1 PCT/EP2012/004414 EP2012004414W WO2013060439A1 WO 2013060439 A1 WO2013060439 A1 WO 2013060439A1 EP 2012004414 W EP2012004414 W EP 2012004414W WO 2013060439 A1 WO2013060439 A1 WO 2013060439A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- belt
- tensioner
- belt shaft
- housing
- insertion element
- Prior art date
Links
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
- B60R22/3408—Belt retractors, e.g. reels without locking means
-
- 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
- B60R22/4619—Transmission of tensioning power by cable, e.g. using a clutch on reel side
-
- 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
- B60R22/18—Anchoring devices
- B60R22/195—Anchoring devices with means to tension the belt in an emergency, e.g. means of the through-anchor or splitted reel type
- B60R22/1952—Transmission of tensioning power by cable; Return motion locking means therefor
-
- 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
- B60R22/18—Anchoring devices
- B60R22/195—Anchoring devices with means to tension the belt in an emergency, e.g. means of the through-anchor or splitted reel type
- B60R22/1954—Anchoring devices with means to tension the belt in an emergency, e.g. means of the through-anchor or splitted reel type characterised by fluid actuators, e.g. pyrotechnic gas generators
-
- 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
- B60R22/4628—Reels with means to tension the belt in an emergency by forced winding up characterised by fluid actuators, e.g. pyrotechnic gas generators
-
- 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
- B60R2022/3427—Seat belt connection on reels
-
- 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
- B60R22/4628—Reels with means to tension the belt in an emergency by forced winding up characterised by fluid actuators, e.g. pyrotechnic gas generators
- B60R2022/4642—Reels with means to tension the belt in an emergency by forced winding up characterised by fluid actuators, e.g. pyrotechnic gas generators the gas directly propelling a flexible driving means, e.g. a plurality of successive masses, in a tubular chamber
-
- 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
- B60R22/4628—Reels with means to tension the belt in an emergency by forced winding up characterised by fluid actuators, e.g. pyrotechnic gas generators
- B60R2022/4642—Reels with means to tension the belt in an emergency by forced winding up characterised by fluid actuators, e.g. pyrotechnic gas generators the gas directly propelling a flexible driving means, e.g. a plurality of successive masses, in a tubular chamber
- B60R2022/4647—Reels with means to tension the belt in an emergency by forced winding up characterised by fluid actuators, e.g. pyrotechnic gas generators the gas directly propelling a flexible driving means, e.g. a plurality of successive masses, in a tubular chamber the driving means being a belt, a chain or the like
Definitions
- the invention relates to a belt tensioner for safety belt systems in motor vehicles, in particular a Endbetschstraffer.
- DE 103 13 551 B3 proposes a seat belt retractor in which a hollow belt shaft rotatably mounted in the belt housing has an end opening and an axially aligned belt shaft slot.
- a feedthrough slot is provided in a housing leg of the belt shaft housing, so that the end of the webbing designed as an end loop
- CONFIRMATION & OP1E together with an inserted into the end loop belt pin in the axial direction can be inserted into the hollow belt shaft and fixed there.
- the object of the invention is therefore to provide a compact belt tensioner, in which in particular the end of a strap can be attached later with low assembly costs to a belt shaft of the rotary belt tensioner.
- a belt tensioner for a safety belt system with a belt shaft housing, a belt shaft which is rotatably mounted in the belt housing about an axis, a cable reel which is firmly connected to the belt shaft, and a tensioner drive, a tensioner tube, a in the tensioner longitudinally displaceably guided, deformable plastic element, a drive pinion and a pull rope, which is partially wound onto the cable reel, the plastic element can engage in the drive pinion and drive the drive pinion in the tensioning direction, and wherein the traction cable on a rotation of the drive pinion on the one hand Reeled cable drum of the drive pinion and on the other hand is unwound from the cable reel with rotation of the belt shaft.
- a tensioner drive has a very high level of operational safety and also allows an extremely compact construction of the belt tensioner, especially in the axial direction.
- the deformable plastic element is preferably formed in one piece, ie the drive is effected by a single driven mass element.
- the plastic element is substantially cylindrical and its length is a multiple of its diameter.
- the drive pinion When interacting with the drive pinion, its teeth dig into the plastic element, which is thereby deformed. It is also useful to have an im To provide compared to its diameter very long first plastic element to which on the drive pinion in the initial state side facing away from some significantly shorter plastic elements. Again, the length of the individual plastic elements is a multiple of the diameter.
- the belt tensioner comprises a belt shaft insertion element to which one end of a belt strap is fastened, wherein the belt shaft has a recess for receiving the belt shaft insertion element, and wherein the belt shaft insertion element can be inserted substantially radially into the recess.
- the belt shaft has a recess for receiving the belt shaft insertion element, and wherein the belt shaft insertion element can be inserted substantially radially into the recess.
- the belt shaft has a fork bearing for the rotationally fixed fixing of the belt shaft insertion element, wherein the belt shaft insertion element can be inserted substantially radially into the fork bearing.
- This fork bearing allows with little effort a rotationally fixed connection between the belt shaft insertion element and the belt shaft.
- the belt shaft insertion element is designed for example as a thick plate or rod with a substantially rectangular or trapezoidal cross-section and accurately received in the fork bearing.
- opposite axial ends of the belt shaft insertion element extend axially beyond the belt, the axial ends being designed as bearing sections for supporting the belt shaft insertion element in the belt shaft.
- the belt shaft insertion element can be symmetrical, in particular designed as a symmetrical steel plate. This symmetry simplifies the subsequent attachment of the webbing to the belt shaft and prevents assembly errors.
- the end of the webbing is preferably sewn into a loop, wherein the loop encloses at least a portion of the belt shaft insertion element. The formation of a loop provides a simple, inexpensive and reliable way to attach a strap end.
- the belt shaft has Weflenstummel at its axial ends, which are connected by a belt shaft web.
- the belt shaft insertion element with the webbing attached thereto can be easily absorbed in the region of the belt shaft web, while the stub shafts allow a simple, rotatable about an axis storage of the belt shaft in Gurtwellengephaseuse.
- a fork bearing for the belt shaft insertion element is preferably formed in at least one stub shaft.
- the fork bearing is designed as a radial bearing slot in the stub shaft, in which a bearing portion of the sprocket insertion element engages positively, to connect the sprocket insertion element rotationally fixed to the belt shaft.
- the belt shaft and more preferably also the GurtwellengePFuse are symmetrical. Analogous to the symmetrical design of the belt shaft insertion element also this symmetry contributes to the reduction of assembly errors and thus a simpler installation.
- both a belt tensioner for the driver side and (mirror-inverted) a belt tensioner for the passenger side of a motor vehicle with identical components can be assembled. As a result, the variety of components and the associated storage costs is reduced and the assembly of the seat belt system further simplified.
- the belt housing is U-shaped in an axial section and has a housing web and two opposite housing legs, wherein each housing leg has a housing opening through which the belt shaft extends.
- a Gurtwellengekoruse can be produced with little effort as a bent stamping made of sheet metal, especially steel.
- a distance between the housing legs in the region of the housing web is greater than in the region of the free leg ends. This results in a kind of "omega shape" of the Gurtwellengekoruses, whereby the belt forces occurring can be easily absorbed.
- an advantageous storage for the belt shaft is provided so that the belt shaft as a casting, in particular of zinc die-cast, can be produced.
- the distance between the housing legs changes in the region of the housing openings, particularly preferably only in the area of the housing openings.
- an axial dimension of the belt shaft essentially corresponds to an axial dimension of the tensioner drive.
- the axial dimension is determined essentially by the width of the webbing to be wound and the resulting necessary dimension of the belt shaft.
- the tensioner drive is adapted to this axial dimension, so that an axial space requirement of the belt tensioner is minimal.
- Substantially corresponding axial dimensions are used in the present case if the (axial) length difference between the belt shaft and the pretensioner drive is less than 10%, preferably less than 5%.
- a tube axis of the tensioner tube extends in sections parallel to the axis of rotation of the belt shaft.
- the tensioner drive may comprise a housing in which a linear receiving space for the deformable plastic element is formed after activation of the belt tensioner, wherein the linear receiving space extends in sections parallel to the axis of rotation of the belt shaft.
- FIG. 1 is a plan view of the belt tensioner according to Figure 1;
- FIG. 3 is a side view of the belt tensioner according to Figure 1;
- FIG. 4 shows a further side view of the belt tensioner according to FIG. 1;
- FIG. 5 is a plan view of a belt shaft insertion element for the belt tensioner according to Figures 1 to 4;
- FIG. 6 shows a plan view and a side view of the belt shaft insertion element fastened to a belt according to FIG. 5;
- FIG. 7 shows a perspective view of the belt-shaft insertion element fastened to the belt according to FIG. 6 before assembly on a belt shaft;
- FIG. 8 shows a perspective view of the belt shaft mounted in a belt shaft housing with the belt strap installed
- FIG. 9 is a perspective view of the belt tensioner according to Figures 1 to 4 prior to assembly of the belt shaft insertion element;
- FIG. 0 is a perspective view of the belt tensioner according to Figures 1 to 4 during assembly of the belt shaft insertion element;
- FIG. 1 is a perspective view of the belt tensioner according to Figures 1 to 4 after the assembly of the belt shaft insertion element and before mounting a belt shaft securing unit;
- FIG. 12 is a perspective view of the belt tensioner according to Figures 1 to 4 in the assembled state
- FIG. 13 shows a detailed view of a belt shaft housing for the belt tensioner according to FIGS. 1 to 4;
- FIG. 14 is a perspective view of the Gurtwellengeratiuses according to FIG.
- FIG. 15 is a side view of the Gurtwellengekoruses according to Figure 13;
- FIG. 16 shows the belt shaft insertion element for the belt tensioner according to the invention according to an alternative embodiment;
- FIG. 17 shows the belt shaft insertion element for the belt tensioner according to the invention in accordance with a further alternative embodiment
- FIG. 18 shows a section through the belt shaft insertion element for the belt tensioner according to the invention in accordance with a further alternative embodiment
- FIG. 19 shows a perspective view of the belt shaft insertion element according to FIG. 18;
- FIG. 20 shows the belt shaft insertion element for the belt tensioner according to the invention according to a further alternative embodiment during assembly
- FIG. 21 shows the belt shaft insertion element according to FIG. 20 after its assembly
- FIG. 22 shows the belt shaft insertion element according to FIG. 21 in section
- FIG. 23 is a schematic perspective view of a belt tensioner according to the invention with alternative tensioner drive;
- FIG. 24 is a side view of the belt tensioner according to the invention according to another embodiment
- FIG. 25 shows a plan view of the belt tensioner according to FIG. 24;
- FIG. 26 is a perspective view of the belt tensioner according to FIG. 24;
- FIG. 27 shows the side view of the belt tensioner according to FIG. 24 without the tensioner housing
- FIG. 28 is a perspective view of the belt tensioner according to FIG. 26 without the tensioner housing;
- FIG. 29 shows the plan view of the belt tensioner according to FIG. 25 without tensioner tube, pull rope and housing of the tensioner drive;
- - Figure 30 is a plan view of the belt tensioner according to Figure 25 without pull rope and housing of the tensioner drive; and - Figure 31 is a sketch for the installation space comparison of the belt tensioner according to Figures 1 to 4 and the belt tensioner according to Figures 24 to 29.
- FIGS 1 to 4 show a belt tensioner 10 for a safety belt system in a motor vehicle, specifically a so-called Endbetschstraffer, with a belt shaft 12 to which an end 14 of a webbing 16 is fixed, and a body-mounted belt reel housing 18 in which the belt shaft 12 stored is, wherein the belt shaft 12 can be rotated relative to the Gurtwellengephaseuse 18 after activation of the belt tensioner 10 to wind webbing 16.
- the end 14 of the webbing 16 is sewn to form a loop which encloses a belt shaft insertion element 20, wherein the belt shaft insertion element 20 is received in a recess 22 of the belt shaft 12 and rotatably mounted relative to the belt shaft 12.
- the Gurtwellengekoruse 18 of the belt tensioner 10 is U-shaped and comprises a housing web 24 and two opposite housing legs 26, 28, wherein each housing leg 26, 28 has a housing opening 30, 32, through which the belt shaft 12 extends. Further, a bent from the housing web 24 mounting tab 33 is provided, through which the Gurtwellengephaseuse 18 fixedly connected to a vehicle seat or a vehicle body, in particular can be screwed.
- the belt shaft 12 is rotatably mounted in Gurtweliengephase 18 about an axis A.
- a cap 34 and a cable reel 36 is arranged, wherein the cap 34 and the cable reel 36 are firmly connected to the belt shaft 12, in particular pressed and prevent axial movement of the belt shaft 12 relative to the belt housing 18 or on minimize a slight axial play.
- a force transmission element 38 is provided, which couples the belt shaft 12 with a tightening drive 40.
- the power transmission element 38 is in the illustrated embodiment, a pull cable 41, which is partially wound onto the cable reel 36 and secured with a cable end to the cable reel 36.
- the tensioner drive 40 of the belt tensioner 10 includes a tensioner tube 42 for receiving and guiding a pressurizing element 44 and a separate generator housing 46 for receiving a gas generator 48.
- the generator housing 46 is a piece of pipe in the illustrated embodiment, so that both the tensioner 42 and the generator housing 46 from a Metal tube, in particular a steel tube are made.
- a coupling element 50 is provided, which connects the generator housing 46 fixedly with the tensioner tube 42 (see FIG.
- the pressurizing element 44 is a piston which is essentially sealed in the curved tensioner tube 42 and slidably received along a tube axis.
- the traction cable 1 attached to the cable reel 36 with a cable end extends from the cable reel 36 into the tensioner tube 42 and is fastened there to the piston with an opposite cable end.
- the piston After activation of the gas generator 48, the piston is acted upon by a gas pressure and moves in the direction of a free tube end 52 of the tensioner 42. It is unwound while rotating the belt shaft 12 pull cord 41 of the cable reel 36 and simultaneously webbing 16 wound on the belt shaft 12 so that a belt tightening takes place.
- This stabilizing unit 54 in the present case comprises two stabilizing elements 55, in particular made of die-cast zinc, and one e.g. as a tubular rivet executed connecting element 56 (see Figures 3 and 4).
- the belt tensioner 10 can also be driven by a hydraulic motor or be equipped with another alternative tensioner 40, in particular a so-called "Powersnake” drive.
- the Powersnake 58 is a flexible, elastically and / or plastically deformable plastic element, which is largely sealed absorbed in the tensioner tube 42 and guided longitudinally displaceable.
- the power snake 58 is acted upon by a gas pressure and moved toward the free end of the tube 52, wherein the power snake 58 is deformed by a drive pinion 59 so that it engages in the drive pinion 59 and this drives in the tensioning direction.
- pull rope 41 is wound on the one hand on a cable drum 60 of the drive pinion 59 and on the other hand unwound from the cable reel 36 of the belt tensioner 10 with rotation of the belt shaft 12, so that a belt tightening takes place.
- the belt tensioner 10 has a particularly advantageous construction, which will be explained in more detail below with reference to FIGS 5 to 5.
- FIG. 5 shows the belt-shaft insertion element 20, which by way of example is a stamped and optionally formed metal plate.
- the belt shaft insertion element 20 is formed symmetrically, in particular as a symmetrical steel plate.
- the end 14 of the webbing 16 is sewn into a loop, wherein the loop encloses the belt shaft insertion element 20.
- the end 14 of the webbing 16 is reliably secured to the belt shaft insertion element 20.
- Opposite axial ends of the belt shaft insertion element 20 extend axially beyond the webbing 16, wherein the axial ends are formed as bearing portions 61 for supporting the Gurtwel / en-insertion element 20 in the belt shaft 12.
- FIG. 7 shows a perspective view of the belt shaft 12 with the recess 22 for receiving the belt shaft insertion element 20, wherein the belt shaft insertion element 20 with respect to the axis A is inserted radially into the recess 22 substantially.
- the belt shaft 12 has a fork bearing 62 for the rotationally fixed fixing of the belt shaft insertion element 20, wherein the belt shaft insertion element 20 can be inserted substantially radially into the fork bearing 62.
- the belt shaft 12 has stub shafts 64, 66 at its axial ends, which are connected by a belt shaft web 68 (see FIG.
- the recess 22 for receiving the belt shaft insertion element 20 and in the region of the shaft stubs 64, 66 a bearing of the belt shaft 12 rotatable about the axis A in the belt shaft housing 8 (FIG. 8) is formed in a simple manner.
- a fork bearing 62 for the belt shaft insertion element 20 is formed in each of the two shaft stubs 64, 66.
- This fork bearing 62 are in this case radial bearing slots 70, in which the bearing portions 61 of the Gurtwellen insertion member 20 engage accurately and positively, so that the Gurtwellen- egg nsc 'ubelement 20 rotationally fixed in the mounted end state according to figure 8 with the belt shaft 12 is connected.
- Figures 9 to 12 show the sequence of a subsequent assembly of the webbing 16 on the belt tensioner 10, which has already been installed in advance fixed to a seat frame or a body of the motor vehicle.
- the belt-shaft insertion element 20 with the webbing 16 fastened thereto is fed to the already installed part of the belt tensioner 10 until the bearing sections 61 of the belt-shaft insertion element 20 are located radially outside the fork bearing 62 formed in the belt shaft 12 (see FIG. ,
- the belt-shaft insertion element 20 can then be introduced by a radial movement relative to the belt shaft 12 into the recess 22 and the fork bearings 62 so that the belt-shaft insertion element 20 is connected to the belt shaft 12 in a rotationally fixed manner (cf. Figure 11).
- a belt shaft securing unit 74 is pushed between the belt shaft 12 and the housing web 24 of the belt shaft housing 18 and on the belt shaft housing 18 according to FIG fixed ( Figure 12).
- This belt-shaft securing unit 74 is designed so that it only with correct mounting of Gurtwellen- Insertion element 20 can be inserted on the belt shaft 12, so that a faulty mounting of the belt shaft insertion element 20 is excluded on the belt shaft 12.
- the Gurtwellengekoruse 18 is U-shaped in an axial section and the housing web 24 and two opposite housing legs 26, 28, wherein each housing leg 26, 28 has a housing opening 30th , 32, through which the belt shaft 12 can extend (see Figures 1 and 2).
- a distance 77 between the housing legs 26, 28 in the region of the housing web 24 is greater than a distance 78 in the region of the free leg ends 79, so that the housing shape resemble in this axial section of the Greek capital letters "Omega".
- the distance between the housing legs 26, 28 changes according to FIGS. 13 and 14 exclusively in the area of the housing openings 30, 32.
- This housing shape contributes to a particularly advantageous flow of force within the belt tensioner 10. Because of this housing shape, it is possible to hook the belt shaft insertion element 20 sewn into the webbing 16 into the belt shaft 1 for load introduction and to dimension it in such a way that the breaking load is introduced into the belt shaft housing 18 via the belt shaft insertion element 20. This makes it possible to manufacture the belt shaft 12 as a cast part, in particular made of die-cast zinc.
- FIG. 16 shows the belt-shaft insertion element 20 with webbing 16 attached thereto according to an alternative embodiment.
- the belt shaft insertion element 20 is formed in two parts in this case, with a base body 80 to which the end 14 of the webbing 16 is attached, and a winding body 82 which is rotatably connected to the main body 80.
- the winding body 82 client to provide a more symmetrical, ideally circular core for winding the webbing 16.
- the main body 80 and the winding body 82 may possibly be screwed together, which is indicated by a threaded bore 84 in Figure 16.
- a threaded bore 84 in Figure 16.
- This screw possibly with torque query, can also ensure a correct assembly of the spool insert member 20 on the belt shaft 12, so that can be dispensed with the Gurtwellen- securing unit 74 with respect to this function.
- FIG. 17 shows a further alternative embodiment of a two-part belt-wave insertion element 20, which differs from the embodiment according to FIG. 16 only by the connection between the base body 80 and the winding body 82.
- Figures 18 and 19 show yet another alternative embodiment of a two-part Gurtwellen push-in element 20, which in turn differs from the two previous embodiments only by the shape of the base body 80 and the winding body 82.
- the aim of this multi-part Gurtwellen push-in elements 20 is, together with the Gurtwellensteg 68 of the belt shaft 12 (see Figure 9) with respect to the axis A symmetrical as possible, ideally circular core for winding the webbing 16 provide.
- Figures 20 to 22 show a further alternative embodiment of a multi-part Gurtwellen insertion element 20, which already comes very close to an ideal, circular core for winding the webbing 16.
- the basic body 80 of the belt shaft insertion element 20 designed as a push-in pin is first of all inserted into the loop formed at the end 14 of the belt strap 16 and fixed radially by two intermediate elements 86. Subsequently, the two-part bobbin 82 is arranged and fixed the multi-part belt shaft insertion element 20 by a screwed into the threaded holes 84 screw.
- Figures 24 to 26 show a side view, a plan view and a perspective view of the belt tensioner 10 according to another, particularly compact embodiment. The mode of operation of this belt tensioner 10 corresponds exactly to the mode of operation of the belt tensioner 10 according to FIG. 23, so that in this respect reference is explicitly made to the above description of FIG.
- the belt tensioner 10 is in particular an end tightening tensioner for a safety belt system and comprises the belt shaft housing 18, the belt shaft 12, which is rotatably mounted in the belt shaft housing about the axis A, the cable reel fixed to the belt shaft 12
- the tensioner 40 has the tensioner tube 42, the longitudinally displaceably guided in the tensioner tube 42, deformable plastic element, the drive pinion 59 and the pull cable 41, which is partially wound onto the cable reel 36.
- the plastic element can engage in the drive pinion 59 and drive the drive pinion 59 in the tensioning direction, wherein the traction cable 41 wound on a rotation of the drive pinion 59 on the one hand on a cable drum 60 of the drive pinion 59 and on the other hand unwound from the cable spool 36 while rotating the belt shaft 12.
- the belt shaft 12 already described above with the recess 22 is used for receiving a belt shaft insertion element 20 which can be inserted radially into the recess 22.
- a conventional belt shaft is used, at which the belt end must either be fixed before installing the belt tensioner or axially inserted and fixed after assembly of the belt tensioner, for which, however, a fairly large space is needed in the axial direction ,
- the tensioner drive 40 comprises a housing 88 in which a section of the tensioner tube 42 and the drive pinion 59 are accommodated. Further, the housing 88 defines a linear receiving space 90 into which the deformable plastic element extends after activation of the belt tensioner 10 (see also Figure 30).
- the tensioner 40 is shown in the following figures 27 to 30 without its housing 88.
- FIGS. 27 and 28 show, analogously to FIGS. 24 and 26, a side view and a perspective view, respectively, of the belt tensioner 10, but without the housing 88 of the pretensioner drive 40.
- FIG. 29 shows, analogously to FIG. 25, a plan view of the belt tensioner 10, wherein the housing 88 of the tensioner drive 40, the tensioner tube 42 and the pull cord 41 are not shown, around an initial position 58D of the deformable plastic element before activation of the belt tensioner 10 and an end position 58QD the deformable plastic element after activation of the belt tensioner 10 to recognize well.
- the flexible and elastically and / or plastically deformable plastic element is also referred to as Powersnake 58 and is largely sealed in its initial position 58D received in the tensioner tube 42 and guided longitudinally displaceable with respect to a tube axis of the tensioner 42.
- the power snake 58 is acted upon by a gas pressure and displaced towards the free end of the tube 52 and the drive pinion 59, wherein the power snake 58 is deformed by the drive pinion 59 so that the power snake 58 engages in the drive pinion 59 and this drives in a tight direction.
- pulling rope 41 is wound on the one hand on the cable drum 60 of the drive pinion 59 and on the other hand unwound from the cable reel 36 of the belt tensioner 10 with rotation of the belt shaft 12, so that a belt tightening takes place.
- the tensioner 40 described is extremely reliable, so that preferably designed as Endbetschstraffer belt tensioner 10 performs a desired belt tightening reliable and reproducible.
- both a portion of the tube axis of the tensioner tube 42 and a portion of a longitudinal axis of the linear receiving space 90 extend parallel to the axis of rotation A of the belt shaft 12.
- This is shown in Figure 30, wherein the parallel to the axis A.
- Section of the tube axis of the tensioner tube 42 with the reference numeral B and the axis A parallel to the portion of the longitudinal axis of the linear receiving space 90 is provided with the reference numeral C.
- FIG. 31 the space requirement of the belt tensioner 10 according to FIGS. 1 to 4 is compared with the space requirement of the belt tensioner 10 according to FIGS. 24 to 29. Due to the changed tensioner drive 40, the belt tensioner 10 according to FIGS. 24 to 29, with an approximately identical dimension h perpendicular to the axis A, is significantly more compact in the axial direction than the belt tensioner 10 according to FIGS. 1 to 4.
- the overall length of the tensioner drive 40 is adapted to the belt shaft 12 such that an axial dimension d of the belt shaft 12 substantially corresponds to an axial dimension d of the tensioner drive 40. Since the axial dimension of the belt tensioner 10 is significantly determined by the width of the webbing 16 to be wound up and the resulting necessary dimension of the belt shaft 12, the axial space requirement of the belt tensioner 10 is minimal in this case.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automotive Seat Belt Assembly (AREA)
- Storage Of Web-Like Or Filamentary Materials (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/352,339 US9358949B2 (en) | 2011-10-27 | 2012-10-22 | Belt tensioner for a safety belt system |
CN201280057949.4A CN103946074A (zh) | 2011-10-27 | 2012-10-22 | 用于安全带系统的带拉紧装置 |
DE112012004515.7T DE112012004515A5 (de) | 2011-10-27 | 2012-10-22 | Gurtstraffer für ein Sicherheitsgurtsystem |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011117052.2 | 2011-10-27 | ||
DE102011117052A DE102011117052A1 (de) | 2011-10-27 | 2011-10-27 | Gurtstraffer für ein Sicherheitsgurtsystem |
Publications (1)
Publication Number | Publication Date |
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WO2013060439A1 true WO2013060439A1 (de) | 2013-05-02 |
Family
ID=47148708
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
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PCT/EP2012/004412 WO2013060437A1 (de) | 2011-10-27 | 2012-10-22 | Gurtstraffer für ein sicherheitsgurtsystem |
PCT/EP2012/004414 WO2013060439A1 (de) | 2011-10-27 | 2012-10-22 | Gurtstraffer für ein sicherheitsgurtsystem |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2012/004412 WO2013060437A1 (de) | 2011-10-27 | 2012-10-22 | Gurtstraffer für ein sicherheitsgurtsystem |
Country Status (4)
Country | Link |
---|---|
US (2) | US9358949B2 (de) |
CN (2) | CN103958292B (de) |
DE (3) | DE102011117052A1 (de) |
WO (2) | WO2013060437A1 (de) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013008150B4 (de) * | 2013-05-14 | 2024-02-01 | Zf Automotive Germany Gmbh | Gurtwelle und Gurtaufroller |
EP2962906B1 (de) | 2014-07-03 | 2016-09-21 | TRW Automotive GmbH | Andruckeinheit sowie Endbeschlag mit einer solchen Andruckeinheit |
DE102014011966B4 (de) | 2014-08-15 | 2017-01-05 | Trw Automotive Gmbh | Verstärkungsteil für eine Gurtwelle, Gurtwelle und Endbeschlagstraffer |
CN106032136B (zh) * | 2015-03-12 | 2019-01-11 | 比亚迪股份有限公司 | 卷收器、安全带卷绕装置及安全带卷绕控制方法 |
DE102015010788A1 (de) | 2015-08-20 | 2017-02-23 | Trw Automotive Gmbh | Gurtwelle für einen Gurtstraffer sowie Gurtstraffer eines Sicherheitsgurtsystems |
KR102596240B1 (ko) * | 2016-12-13 | 2023-11-01 | 현대자동차주식회사 | 프리텐셔너 및 이를 갖춘 안전벨트장치 |
US10328895B2 (en) | 2017-03-17 | 2019-06-25 | Autoliv Asp, Inc. | Seatbelt pretensioning retractor assembly including a pretensioner rod |
US10864886B2 (en) | 2019-02-22 | 2020-12-15 | Autoliv Asp, Inc. | Retractor pretensioner assembly |
US10946831B2 (en) | 2019-02-25 | 2021-03-16 | Autoliv Asp, Inc. | Retractor pretensioner assembly |
DE102019206439B4 (de) * | 2019-05-06 | 2021-11-11 | Autoliv Development Ab | Gurtaufroller |
KR20210074099A (ko) * | 2019-12-11 | 2021-06-21 | 현대자동차주식회사 | 차량의 시트벨트 프리텐셔너 |
US11214227B2 (en) | 2020-01-10 | 2022-01-04 | ZF Passive Safety Systems US Inc. | Airbag with deployment or movement controlling tensioner |
DE102021204760B4 (de) | 2021-05-11 | 2023-06-29 | Joyson Safety Systems Germany Gmbh | Endbeschlagstraffer mit einem Verbindungsmechanismus |
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WO1999019176A1 (de) * | 1997-10-11 | 1999-04-22 | Autoliv Development Ab | Sicherheitsgurtaufroller mit einem mit dem gurtband unlösbar verbundenen gurtstift |
DE10313551B3 (de) | 2003-03-26 | 2004-09-09 | Autoliv Development Ab | Sicherheitsgurtaufroller mit nachträglich zu montierendem Gurtband |
EP1526047A1 (de) * | 2001-07-10 | 2005-04-27 | TRW Automotive GmbH | Gurtaufroller |
EP1607287A1 (de) * | 2004-06-14 | 2005-12-21 | Delphi Technologies, Inc. | Sicherheitsvorrichtung |
DE102006031360A1 (de) * | 2006-04-03 | 2007-10-04 | Trw Automotive Gmbh | Gurtstraffer für ein Sicherheitsgurtsystem |
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GB2376665B (en) * | 2001-06-19 | 2003-05-28 | Breed Automotive Tech | Retractor spool |
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-
2011
- 2011-10-27 DE DE102011117052A patent/DE102011117052A1/de not_active Withdrawn
-
2012
- 2012-10-22 WO PCT/EP2012/004412 patent/WO2013060437A1/de active Application Filing
- 2012-10-22 WO PCT/EP2012/004414 patent/WO2013060439A1/de active Application Filing
- 2012-10-22 US US14/352,339 patent/US9358949B2/en not_active Expired - Fee Related
- 2012-10-22 CN CN201280057954.5A patent/CN103958292B/zh active Active
- 2012-10-22 DE DE112012004515.7T patent/DE112012004515A5/de not_active Ceased
- 2012-10-22 CN CN201280057949.4A patent/CN103946074A/zh active Pending
- 2012-10-22 DE DE112012004506.8T patent/DE112012004506B4/de active Active
- 2012-10-22 US US14/352,064 patent/US9475454B2/en active Active
Patent Citations (5)
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WO1999019176A1 (de) * | 1997-10-11 | 1999-04-22 | Autoliv Development Ab | Sicherheitsgurtaufroller mit einem mit dem gurtband unlösbar verbundenen gurtstift |
EP1526047A1 (de) * | 2001-07-10 | 2005-04-27 | TRW Automotive GmbH | Gurtaufroller |
DE10313551B3 (de) | 2003-03-26 | 2004-09-09 | Autoliv Development Ab | Sicherheitsgurtaufroller mit nachträglich zu montierendem Gurtband |
EP1607287A1 (de) * | 2004-06-14 | 2005-12-21 | Delphi Technologies, Inc. | Sicherheitsvorrichtung |
DE102006031360A1 (de) * | 2006-04-03 | 2007-10-04 | Trw Automotive Gmbh | Gurtstraffer für ein Sicherheitsgurtsystem |
Also Published As
Publication number | Publication date |
---|---|
US9358949B2 (en) | 2016-06-07 |
WO2013060437A1 (de) | 2013-05-02 |
CN103958292B (zh) | 2017-08-04 |
CN103958292A (zh) | 2014-07-30 |
US20150291125A1 (en) | 2015-10-15 |
CN103946074A (zh) | 2014-07-23 |
US9475454B2 (en) | 2016-10-25 |
DE112012004506B4 (de) | 2023-01-19 |
DE102011117052A1 (de) | 2013-05-02 |
US20140265517A1 (en) | 2014-09-18 |
DE112012004506A5 (de) | 2014-10-23 |
DE112012004515A5 (de) | 2014-07-17 |
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