Classifications

• • A—HUMAN NECESSITIES
  • A44—HABERDASHERY; JEWELLERY
  • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
  • A44B11/00—Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts
  • A44B11/02—Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts frictionally engaging surface of straps
  • A44B11/06—Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts frictionally engaging surface of straps with clamping devices
  • A44B11/10—Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts frictionally engaging surface of straps with clamping devices sliding wedge
• • A—HUMAN NECESSITIES
  • A44—HABERDASHERY; JEWELLERY
  • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
  • A44B11/00—Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts
  • A44B11/25—Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts with two or more separable parts
  • A44B11/2503—Safety buckles
  • A44B11/2546—Details
  • A44B11/2561—Tongue elements
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T24/00—Buckles, buttons, clasps, etc.
  • Y10T24/40—Buckles
  • Y10T24/4002—Harness
  • Y10T24/4028—Penetrating tongue
  • Y10T24/4044—Sliding part or wedge
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T29/00—Metal working
  • Y10T29/12—Buckle making

Definitions

• the invention relates to a tongue for a belt buckle of a safety belt system having the features according to the preamble of patent claim 1.
• Such a tongue is known for example from the German Offenlegungsschrift DE 10 2007 043 338 AI.
• the ⁇ se tongue has a plug-in section, which is suitable for Einste ⁇ cken in a buckle of a safety belt system.
• the tongue is equipped with a Gurthalteab ⁇ section , which has a slot for performing and deflecting a safety belt.
• the tongue environmentally holds a metal plate having a slotted opening ⁇ be seated.
• the position of the slot-shaped opening correlates with the slot of the tongue, through which the seat belt can be passed for redirecting.
• the edge of the metal plate delimiting the slit-shaped opening is embedded in a plastic material.
• the invention has the object of specifying a tongue at ⁇ , which can be produced easily and inexpensively and having a high mechanical stability.
• the invention provides that the slot-shaped opening limiting edge portion of the metal plate is bent out of the opening plane of the slot-shaped opening and has a hook-shaped cross-section.
• a significant advantage of the tongue according to the invention is to be seen in the fact that in this case a cross-sectionally to ⁇ at least approximately circular plastic sheath in the slot-shaped opening can be very easily finished.
• the plastic material can namely ⁇ bent edge portion in the region of - because of the hook-shaped cross-section - be applied to at least approximately the same thickness or wall thickness, whereby the production of the plastic casing, in particular in the case of Umsprit- zen of the metal plate with plastic material significantly ver ⁇ is being improved. Also, the shrinkage of material is less, and there are fewer sink marks, voids or cracks.
• Tongue is the fact that the stability of the plug ⁇ tongue is very large. Exercises the seat belt, for example in the event of an accident, a tensile force on the tongue, the plastic material is supported over a large area by the bent hook ⁇ shaped edge portion. The Switzerlandbelas ⁇ tion is thus absorbed both by the plastic material and by the plastic material holding or supporting edge portion. There are a result of the hook-shaped cross section in the region of the edge section of the metal plate so no corners or edges that act like a wedge in case of a tensile load on the plastic material and could destroy this un ⁇ ter circumstances.
• a third significant advantage of the plug tongue according to the invention is the fact that despite the mentioned considerable mechanical advantages, it can nevertheless be produced very inexpensively and simply, because the shaping of the bent edge section of the metal plate can be achieved, for example, solely by punching, deep drawing and bending a metal sheet be achieved.
• a fourth significant advantage of the tongue according to the invention is the fact that a considerable stiffening of the metal plate is achieved by the shaping according to the invention, ie the hook-shaped cross-section, whereby in the case of a high mechanical load, for example in the case of an accident, the risk of Breaking or bending the tongue is significantly reduced.
• relatively thin sheets can be used for their production, so that the production is easier and less expensive.
• the bent-over edge section is preferably that edge of the two opposite long edges of the slot-shaped opening, which has the greater distance from the plug-in section.
• the bent edge portion preferably has a brieflyge ⁇ uncoated portion, to which a bent section is connected.
• the hook-shaped cross section of the bent edge portion thus preferably comprises two manufacturing ⁇ steps, namely a deep-drawing step, in which, inter alia, the deep-drawn portion is formed, and a bending ⁇ step, in which the bent portion is formed.
• the width of the hook opening of the bent edge portion - ie the distance between the front hook tip and the hook tip opposite point of the edge portion, is preferably at least as large as the thickness of the metal ⁇ plate itself. Such a width of the hook opening simplifies the embedding of Gurthalteabitess in the art ⁇ -material, especially if the belt-retaining is encapsulated with plastic material.
• the bent-over edge section of the metal plate may, for example, have a cross-section which corresponds in shape to the upper part of a question mark.
• the synthetic ⁇ material forms a plastic layer in the region of the bent edge portion, which at least from ⁇ is section-wise arc-shaped, preferably circular arc-shaped in cross section.
• the slot or the slot-shaped opening facing the outside of the bent edge section in the Cross-section in sections arcuate, preferably circular ⁇ arcuate, and the arcuate outer side is provided with a cross-sectionally arcuate, preferably circular arc-shaped, plastic layer.
• the layer thickness of the arcuate, preferably circular arc, plastic layer is preferably between 0.7 and 3 mm.
• the layer thickness variation is preferably less than 10% of the average layer thickness of the sheet-like synthetic material layer.
• Cross-section arcuate plastic layer plastic teeth are formed, which extend away from the bent edge portion of the metal plate.
• the teeth have a cross section which inhibits in one direction slipping along the seat belt more than in the other direction.
• the cross section of the teeth is preferably fin-shaped.
• the tip of the teeth is preferably oriented in such a way that, when the safety belt is applied, the teeth inhibit a longitudinal movement of the safety belt from the shoulder portion into the pelvic portion. In order to achieve optimum stability of the teeth, it is considered advantageous if the height of the teeth is at most 1.5 times the thickness of the curved plastic layer.
• the tip of the teeth is bent away in the same direction of rotation as the hook tip of the bent edge portion.
• the tip of the teeth may be bent opposite to the direction of rotation of the hook tip of the bent edge portion.
• the belt-retaining section out of the plane of the plug section is bent and the extending direction of the slit at an angle to the plug-in section between 10 and 19 degrees ⁇ points.
• the bent-over edge section of the metal plate - from the opening plane of the slotted shaped opening out - bent away from the plane of the plug-in portion, in particular bent away, is.
• the bent-over edge section of the metal plate is preferably embedded in a plastic strand which, in cross-section, has a sectionally arcuate, in particular arcuate, outer contour.
• the arcuate Au ⁇ Hzkontur of the plastic strand is preferably pa rallel ⁇ or partially concentrically aligned with the outer contour of the flange portion.
• the arc-shaped outer contour of the plastic strand is preferably at least section-wise provided before ⁇ in sections with teeth, and from ⁇ with webs which sen a smooth outer surface aufwei-.
• the function of the webs or their smooth outer surface is to simplify in the case of no or only a slight tensile load of the seat belt to slide the seat belt on the art fabric strand. If, however, the pulling force of the seatbelt increases, so the seat belt with the teeth on the outer contour of the plastic strand is in contact and, depending on the sliding direction ⁇ be prevented from sliding through the teeth more or less.
• the webs are preferably radially around the outer contour of the
• Plastic strings led around It can be provided that the webs extend obliquely around the outer contour of the plastic strand around. In addition, it is regarded as advantageous if the
• Insertion tongue has an end portion which is separated from the Steckab ⁇ section by the belt holding portion.
• the final cut and the plug portion are preferably arranged in parallel ⁇ .
• the invention also relates to a tongue for a buckle of a safety belt system with a plug-in portion suitable for insertion into the buckle and with a belt holding portion having a slot for
• the tongue comprises a metal plate with a slit-shaped opening.
• the slit-shaped opening limiting edge portion of the metal ⁇ plate is embedded in a Kunststoffstrlind which has a sectionally arc-shaped outer contour in cross-section, and the outer contour of the plastic strand is at least provided in sections with teeth in a direction slide along the Seat belt inhibit more than in the other direction.
• the seat belt should preferably come into contact with the teeth on the outer contour of the plastic strand only at a high tensile force, but not during normal operation; In normal use, preferably no inhibition should occur, no matter in which direction. Inhibition should preferably occur only in critical situations, ie under high load and preferably in only one direction.
• the invention also relates to a method for producing a tongue.
• vorgese ⁇ hen that a metal plate to form a schlitzförmi- is punched out opening, the stamped metal plate is deep-drawn and a slot-shaped opening limiting edge portion of the metal plate from the opening plane of the slot-shaped opening is bent such that the bent edge portion has a hook-shaped cross section ⁇ , and the bent edge portion embedded in a plastic ⁇ material becomes.
• the order of the deep-drawing ⁇ step and the bending step is arbitrary.
• FIGS. 1-8 show a first exemplary embodiment of a tongue according to the invention
• FIGS 9-15 a second embodiment of a dung OF INVENTION ⁇ proper tongue and Figures 16-19, a third embodiment for a dung OF INVENTION ⁇ proper tongue.
• FIGS 1 to 8 show a first embodiment of a tongue according to the invention 10.
• the tongue 10 um- Grasps a plug portion 11 and a belt support portion 12 which is equipped with a slot 13.
• the plug portion 11 is provided with a recess IIa through which a locking element of a buckle for holding the tongue 10 can engage.
• FIG. 2 shows the tongue 10 according to FIG. 1 in a three-dimensional view. It can be seen from the plug portion 11, the belt support portion 12 and the slot 13. Be ⁇ from a plastic strand 30 can be seen, which limits the long edge 13 a of the slot 13. Opposite the long edge 13a is a long edge 13b of the slot 13, which has a smaller distance to the plug-in portion 11 than the other opposite long edge 13a.
• FIG. 2 shows the plastic strand 30 at least partially circular in cross section.
• the surface of the plastic strand 30 has four webs 40 which have a smooth surface so that the safety belt can slide over them. Between the webs 40 are sections with teeth 50, whose cross-section in the radial direction is at least approximately fin-shaped.
• FIG. 3 shows the tongue 10 according to FIG. 1 again in a different view. Again, the plastic strands 30, the webs 40 and the teeth 50 can be seen very well.
• FIG. 4 shows the tongue 10 according to FIG. 1 in a section. It is apparent that the tongue 10 has a metal plate 60 having a slit-shaped opening 70, the position of which correlates with the position of the slot 13 of the Steckzun ⁇ ge 10th
• Slit 13 is limited, is bent out of the opening plane of the slit ⁇ shaped opening 70, so that a hook-shaped cross-section is formed.
• the edge section 80 is bent in the direction of the plane of the plug-in section 11, that is to say downwards in the illustration according to FIG.
• FIG. 5 shows the tongue according to FIG. 1 cut away in a view from the side. It can be seen the hook-shaped edge portion 80 which is embedded in a plastic material 90.
• the shape of the bent Randab ⁇ section 80 is achieved that the slot or the slot-shaped opening 70 facing outer side 81 of the edge ⁇ section 80 in sections is circular in sections.
• the plastic material 90 forms on the outer surface 81 of the flange portion 80 thus a plastic ⁇ layer 91, which also ab Songsi- se in cross-section thus is a circular arc.
• the plastic layer 91 which is circular in cross-section, has a layer thickness which, without taking account of FIG the plastic layer 90 formed teeth 50 - approximately ⁇ is constant.
• the layer thickness variation of the plastic layer 91 is preferably less than 10% of the average thickness of the plastic layer 91 in the region of the arcuate outer side 81 of the hook-shaped edge section 80.
• the shape of the teeth 50 can be seen in more detail in FIG. It can be seen that the teeth 50 have a fin-like cross-section, by which a preferred direction is defined. Due to the flos ⁇ senartigen cross section, the teeth 50 inhibit sliding along ⁇ th of the seat belt 20 according to FIG 1 depending on the sliding direction to different extents.
• the orientation of the teeth 50 or of the fin-like cross-section is preferably selected so that the teeth, with the seat belt on (and high tensile force, see above), inhibit the safety belt from sliding along the shoulder region of the vehicle occupant in the direction of the pelvic region of the vehicle occupant more than in FIG opposite direction.
• the height of the teeth 50 is approximately the same as the thickness of the plastic layer 91.
• the height of the teeth 50 is preferably in a range between 0.7 times and 1, 5 times the thickness of the plastic layer 91. with such a thickness, the stability of the teeth 50 and the operating power ⁇ supply by the teeth 50 on the plastic layer 91 and because ⁇ with optimally on the curved outer side 81 of the curved edge distance section 80th
• Figure 5 shows that the orientation of the fin-like teeth 50 of the bending direction of the bent Edge portion 80 corresponds.
• the Figure 5 is bent around the ⁇ curved edge portion 80 upwardly, which corresponds to the orientation of the fins forth alignment of the teeth 50th
• FIG. 6 shows the shape of the metal plate 60 of the tongue 10 in more detail. It can be seen the bent edge portion 80 which is bent in the direction of the plane of the Steckab ⁇ section 11.
• Figures 7 and 8 show further views of the metal plate 60 of the tongue 10 according to Figure 1. It can be insbesonde ⁇ re in the Figure 8 clearly seen that the metal plate has an end portion 14 which is separated from the plug portion 11 through the belt-retaining section 12 , The end portion 14 of the tongue 10 and the plug portion 11 are preferential ⁇ way in mutually parallel planes or at a slight angle, preferably up to a maximum of 10 ° to 15 °.
• Figures 9 to 15 show a metal plate 60 for a second embodiment of a tongue 10. It can be seen that bent away in the embodiment shown in Fi ⁇ guren 9 to 15, the upper edge portion 80 of the metal plate 60 from the plane of the plug portion 11 or is bent away. The bending direction of the upper edge portion 80 is thus reversed to the bending direction, as provided in the exemplary embodiment according to FIGS. 1 to 8.
• the shape of the upper edge section 80 can be recognized particularly well.
• the bent edge portion 80 has a deep-drawn portion 82 (see Fig. 11), followed by a bent portion 83 connects.
• the hook-shaped ge cross section of the bent edge portion 80 is thus thus formed by two manufacturing steps, namely a deep-drawing step, in which the deep-drawn portion 82 ge ⁇ forms, and a bending step in which the bent portion 83 is formed.
• the metal plate 60 according to Figures 9 to 15 may be embedded in wide ⁇ ren manufacturing steps in plastic material, as has been explained in connection with Figures 1 to 8 already sawn.
• a plastic strand can be formed, which is provided with webs and teeth and embeds the upper edge portion 80 of the metal plate 60.
• FIGs 16 to 19 show a third embodiment of a tongue 10, wherein the edge portion 80 is not bent hook-shaped.
• the tongue 10 is shown in a three-dimensional view in the cut state. It can be seen that the Randab ⁇ section 80 of the metal plate 60 is embedded in a plastic strand 30, the outside webs 40 (sliding bars) as ⁇ teeth 50 has. The alignment of the webs 40 is different from the first embodiment shown in Figu ⁇ ren 1 to 8. Thus it is seen that the webs 40 are also radially but slightly obliquely guided around the outside of the art ⁇ material strand 30th
• Figures 17, 18 and 19 show the configuration of the teeth 50 in more detail. It can be seen that the teeth are flowed-like in cross section and thereby cause a differing ⁇ che inhibitory effect in case of a sliding past the secure ⁇ integrated belt. For example, in the illustration according to FIG. 19, the seat belt is moved along the direction of the arrow PI through the
• the inhibiting effect of the teeth 50 will be very low due to the fin shape.
• the fin-like teeth 50 ver ⁇ prevent the slide past the seat belt at high tension, inhibit at least substantially more than in the other direction.
• the height difference between the height of the tooth tips and the height of the webs 40 is about 0 to 0.6 mm.
• (Gleitstegen) 40 and the lower opposite edge of the encapsulation is defined is preferably dimensioned such that a free movement of the webbing is ensured in normal use in both directions.
• the slot spacing is also preferably such that no unintentional twisting of the webbing in the slot, either during normal use or during a critical situation, is possible.
• the two outer sliding webs are preferably wider than the inner sliding webs.
• the two outer sliding webs are preferably so wide that even with angled or other webbing guide a glide remains guaranteed in normal use.
• the position of the inner sliding webs is preferably selected such as asymmetric, that even with buckling of the webbing in normal use (eg, even while buckling or buckling) no inhibition arises.
• the mechanical stability of the teeth is preferably selected by the choice of material and / or geometry such that the teeth fail before the webbing fails.

Landscapes

• Automotive Seat Belt Assembly (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=45895979

Family Applications (1)

Country Status (5)

Cited By (1)

Families Citing this family (9)

Family Cites Families (19)

• 2011
  • 2011-11-15 DE DE102011086373A patent/DE102011086373A1/de not_active Withdrawn
• 2012
  • 2012-11-07 EP EP12815627.0A patent/EP2779856A1/de not_active Withdrawn
  • 2012-11-07 JP JP2014541539A patent/JP2014533219A/ja active Pending
  • 2012-11-07 WO PCT/DE2012/200070 patent/WO2013071927A1/de active Application Filing
• 2014
  • 2014-04-28 US US14/263,056 patent/US20140230195A1/en not_active Abandoned

Non-Patent Citations (2)

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