DE2907717A1 - DEVICE FOR THE QUICK RELEASE OF A SEAT BELT - Google Patents

Description

Patent attorneys

Vx. Hugo Wilcken

Dipl.-ing. Thomas WÜcken

'• Oipl.-Chom. Dr, Wolfgang Laufar

Sample strip 1 - 2400 Lübeck 1 gf 2 Q Ω 7 7 1

Applicant: BRITAX (GECO) S.A., 1, route d'Hericy 77870 Vulaines S / Seine France B.P. 3

Device for quick release of a seat belt

The invention relates to a device for quick or urgent release of a seat belt. The ones currently known Seat belts can only be released by interposing a single buckle, which is provided towards the center of the vehicle will.

If, in the event of an accident, this buckle is jammed or damaged, or by the victim's body becomes inaccessible, the injured person runs the risk of not being able to be freed in time, especially in the event of a fire or if the vehicle sinks. An auxiliary device that allows quick release of the belt, so requires that it must be easily accessible for rescuers and that it preferably is provided near the doors, e.g. on the side posts of the body.

Furthermore, in order to avoid the loss of valuable seconds, this must Device be easily replaceable and work very simply, this simplicity also on the one hand the robustness of the Mechanism and on the other hand low cost guaranteed.

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The main object of the invention is therefore to provide a device to provide for the auxiliary release which combines all the aforementioned desired properties and is also able to to be carried out on any type of vehicle without any special redesign is required, and if necessary straps that have already been installed can be fitted without any change to these straps.

According to the invention, the completed device for the quick release of a seat belt strap consists of an anchoring tab, which is to be attached in particular to the body of a vehicle, a detachable tab to which the belt of the Belt is coupled, from means for coupling the two straps to one another by assigning shapes, an elastic Member which exerts such a pressure that the associated molds come into engagement with one another, and a release element for the detachable tab, which is carried by the anchor tab and elastically returns to the rest position.

According to a first embodiment of the invention, the exist Coupling means consisting of a protruding part of the detachable tab which engages in a corresponding recess provided in the anchor tab, the protruding part being a bolt can be and the corresponding recess a hole or a bore that crosses the anchor bracket, while preferably

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the release element is a plunger that is in front of the hole, or the Drilling of the anchor bracket is provided and is able to push back the bolt of the detachable tab with one end.

According to another embodiment of the invention, the exist Coupling means from a stop piece which is attached as a projection on one of the two tabs, from two coupling thumbs which are articulated on the other tab so that they can cross with their ends and connect the strap to the stop piece by enclosing it, and from one Locking device that is used to slide between the ends of the crossed thumbs.

The invention will now be explained in detail with reference to the drawing, in which several exemplary embodiments are shown. Show it:

Figure 1 is a view of the device according to a first embodiment,

Figure 2 is a section along line II-II of Figure 1, Figure 3 shows a first variant of the device according to the invention, Figure 4 is a perspective view of the spring used in the embodiment of Figure 3,

Figure 5 shows a second variant of the device according to the invention, 6 shows a third variant of this device, FIG. 7 shows a front view of a fourth variant with

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cut parts to better see the internal mechanism,

FIG. 8 shows a section along line VIII-VIII of FIG. 7, FIG. 9 shows a front view of a fifth variant in which the housing or cover is omitted,

FIG. 10 shows a section along line X-X of FIG. 9, FIG. 11 shows a front view of a sixth variant, FIG. 12 shows a section along line XII-XII in FIG. 11.

As shown in Figure 1, there is the device according to Invention from an anchor bracket 1, which is connected by a screw 2 is attached to the post plate 3 of the vehicle body. This anchor bracket 1 carries a detachable bracket 4 with an opening 5, through which the belt 6 of the seat belt is slidably guided, the flap 4 in an urgent case by simple pressure can be released on a push button 7, which is mounted on the end of a rod, the other end of which is mounted in a cage 8 which is attached to the anchor bracket 1 by soldering or welding, for example. A lid or jacket 9 snaps onto the flap 1 to cover the overall arrangement.

From Figure 2, which represents a section along the line II-II of Figure 1, one recognizes the coupling type of the detachable bracket 4 with the anchor bracket 1, which is done by means of a bolt 10, which is inserted vertically into the tab 4 and into a hole 10

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engages, which crosses the anchor plate 1. A leaf spring 12 is attached to the post 3 by the screw 2 and the bracket 1, which press the spring against the post, and wherein the spring is supported against the detachable tab 4, on the Side that is opposite the coupling duration 10 to this elastically engaged in the corresponding hole 11 of the tab 1 to keep. The cage 8, which is electrically welded to the bracket 1 is, carries a bearing 13 which is aligned with the hole or the bore 11 and one end of the push rod 14 receives the other Has the end of the push button 7, the rod reaching through the wall of the cage 8 through a bore 15 in which it can slide. The end of the rod 14, which is mounted in the bearing 13 of the cage 8, has a bead 15, the end surface 16 opposite the end of the bolt 10 is concave and practically shows the shape of a spherical cap, while the end of the bolt 10, which is convex, has the complementary shape of the spherical cap to ensure the axial centering of the rod 14 and the bolt 10, as soon as they come into contact with the ends.

The button plunger 7 is preferably colored red, since this color is generally reserved for special devices or emergency devices is.

Different variants can be considered, in particular with regard to the leaf spring, which is intended to

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to bring the detachable tab 4 against the anchor tab 1 to rest. The first variant according to FIG. 3 consists of a spring 18, which is shown in perspective in FIG. 4, and the two lateral ones Tongues 19 and 20, which are bent upwards in the form of hooks, and a central tongue 21, which through the part of the spring leaf 18, which lies between the two tongues 19 and 20, this part being essentially perpendicular to the extension 22 the spring 18 is, which has a fastening hole 23 for the passage of the screw 2, which is used to the anchor bracket 1 on To fasten post 3 of the vehicle body. Once the spring 18 is inserted, the bolt 1O of the releasable bracket 4 engaging in its corresponding bearing in the anchor bracket 1 is located, the two lateral tongues 19 and 20 are supported on the back of the detachable tab 4 on both sides of the flanging 24 of the Bolt 10 on the tab 4 so that they do not interfere with the loosening of the tab downwards. The end of the middle tongue 21 rests, itself down on the upper part of the detachable tab 4 elastically supporting such that it is ejected as soon as the bolt 10 is pushed back from the hole 11 of the tab 1.

In this first variant, the spring 18 ensures two functions, namely the elastic holding of the bolt 10 in its bearing 11 the anchor bracket and, on the other hand, the ejection the releasable tab as soon as the bolt 10 is pulled out of this camp.

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In the other two variants according to FIGS. 5 and 6, the leaf spring is 25 simplified and has no lateral support tongues 19 and 20, but the anchor plate 1 is modified so that it tilts the detachable tab 4 prevents the oblique tension T of the belt 6, in order to actually avoid accidental loosening of the releasable tab 4 under the action of such a tensile force T the anchor bracket 1 has a crank 26 (Figure 5) or a cutout 27 (Figure 6). In the second variant (Figure 5) is the Cutout tongue 28 of tab 1 is bent downward in such a way that it forms a lock behind the upper end 29 of the detachable tab 4 forms, i.e. a stop that causes the loosening of the bolt 1O a diagonal pull on the belt 6 is limited. Understandably, the stop 28 has a sufficient distance from the upper part 29, so as not to prevent the bolt 10 from being pulled out of its bearing 11 under the pressure on the button 7 and the plunger 14, but is provided close enough to limit the opposite inclination of the tab 4 and the accidental pulling out of the bolt to prevent.

The device according to the third variant according to FIG. 6 gives the same result, but with different means. The anchor strap 1 is also cut out at 27, but no downwardly folded tongue is provided here, with the holding behind the detachable tab 4 is nevertheless carried out in that the upper end of the tab 4 has an upper extension 30,

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which engages in the cutout 27 of the anchor plate 1 and after is at the back against the edge of this cutout, which limits the tilting of the flap 4 backwards under the diagonal pull T and that The bolt 10 is prevented from being pulled out of its bearing.

The operation of the device according to the invention is extremely simple and can easily be derived from the drawings.

In the event of an accident and as soon as a quick release by the seat belt user is required, it is sufficient to press against the button 7 to the concave surface 16 of the plunger 14 against the convex surface 17 to center the bolt 10 and push it back from its bearing 11 of the anchor bracket 1, the leaf spring or the leaf springs 12, 22 or 25 yield elastically. The tension exerted on the belt 6 by the victim's body that is on him persists, ejects the detachable tab 4 and allows the person concerned to be freed quickly, with the ejection still through the Effect of an elastic tongue 21 (Figure 3) is facilitated, which is supported on the upper end of the detachable tab 4 and possibly counteracts the tilting of the flap 4 backwards under a diagonal pull on the belt 6 of the belt.

conversely, it is easy to understand that the detachable tab 4 is easily in can be easily coupled to the anchor bracket by compressing the leaf spring while the bracket 4 is facing upwards

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pushes until the bolt 10 is aligned with the bore 11 and thereby engages under the action of the leaf spring.

Understandably, the leaf spring can be a helical spring or a block made of elastic rubber or the like be replaced. The protruding part or a cam of the releasable tab 4 can also be different than by a Bolts 10 are formed, e.g. as a nose or cam or by a punched out and folded flap.

The push rod 14 can also be directly against the releasable tab 4 instead of lying elastically against the end of the bolt 10, the support area preferably being below the mentioned bolt in the variants according to Figures 5 and is located in such a way that the tab 4 against the inclination that it assumes under the action of an oblique tensile force T on the belt, pivots. In fact, the purpose of the action of the plunger is to erect the detachable tab and, at the same time, the bolt to push back from his camp.

As shown in FIGS. 7 and 8, according to a fourth variant, the device for rapid triggering consists of an anchor bracket 31 which is fastened to the body 32 of a vehicle namely through. Activation of a centering sleeve 33 on one Screw 34. A lock 35 is slidable on the socket 33

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stored bar, which has a locking cam 36 which protrudes from the upper part and has a push button 37 on the lower part, wherein the plunger 37 is hollow and receives a compression spring 38 which lies against a bulge 39 of the anchor plate 31, the protrudes into the end of the spring. The button plunger is against that Action of the spring 38, which tries to remove it from the tab 31, by a jacket or cover 40 made of sheet metal or Plastic held, which snaps into the anchor bracket and is provided with a cross hole through which the free end of the The plunger protrudes and which is provided with a stop collar 41 (FIG. 8) which comes to rest against the cover 40.

The cover 4O is open at the bottom so that a detachable tab 42 introduced from below and its coupling to the anchor bracket 31 is made possible.

The releasable tab 42 consists essentially of a simple rod which runs transversely under the strap 43 of the belt, and at both ends of the rod are two coupling fingers or Coupling thumb 44 articulated by means of rivets 45. The two coupling thumbs 44 are elastic in the sense of locking pressed against each other by two return springs 46, which are mounted around the rivets 45 and the ends of which engage behind the rod 42 as well as behind each thumb 44. From FIG it can be seen that the centering bushing 33 has a collar 47

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possesses, which is used for this purpose, the thumbs 44 in the axial direction of the screw 34 with the collar high enough to allow escape to prevent the thumb, and blunted at the bottom to allow the plunger 37 to pass.

Due to its simplicity, the device according to the invention can be fitted very easily even to seat belts already installed in vehicles. It is sufficient to attach the anchor plate 31 to the To fasten the vehicle body by means of the screw 34, snap the cover 40 and the rod 42 of the detachable tab under to push the strap 43 of the belt through with the two thumbs 44 spread or stretched.

The detachable bracket 42 is coupled to the anchor bracket 31 then in the following way. You move the two clutch thumbs 44 under the lid 40 by holding them apart and by exerting pressure on the button plunger 37 until the plunger 37 and the bushing 33, mounted on the screw 34, lies between the two thumbs. These are then released, which close under the action of their return springs 46 and thereby the bushing 33 and the screw 34. As soon as the detachable tab is pushed back to the bottom, the overlap Ends of the coupling thumbs 44 far enough above the screw and allow the crossing behind the socket, these ends are offset from one another and split into two parallel, vertical ones

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There are levels that are staggered in depth according to FIG.

In order to improve the locking of the two thumbs and their coupling, the thumbs have an S-shape with bent over Parts that form the beginning or part of an eyelet as soon as they cross each other and those with the lower bent parts that surround and enclose the plunger and bushing 33 on screw 34.

After the ends behind the bushing 33 and the screw 34 are crossed are, it is sufficient to release the pressure on the plunger 37 so that the movable part of the bolt 35 is pushed back and is moves in the direction of the two coupling thumbs 44, whereby its locking cam 36 is inserted between the ends in the eyelet, which is formed by the ends, whereby the removal of the thumbs from one another is blocked and consequently also the release of the Rod 42 and the belt 43 which runs over the rod.

Conversely, to loosen the belt, it is sufficient to depress the plunger 37, whereby the movable part 35 and its cam 36 is pushed backwards under compression of the spring 38. As soon the cam 36 is displaced behind the upper ends of the two clutch thumbs and is no longer in their area or pivot area, the thumbs can move away from each other and then allow the rod 42 to slide or slide downward with subsequent release of the belt 43 free.

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In the fifth variant according to FIGS. 9 and 10, in which the cover is omitted, the device according to the invention also has an anchor bracket 50, which by a screw 51 on the Vehicle body 32 is attached, as well as a detachable tab consisting of a rod 52 around which the belt 4 3 of the belt is lying around. The rod 52 is hinged at the ends with two Coupling thumbs 53 are provided, which are mounted on rivets 54, the thumbs having an S-shape, as in the device according to FIGS. 7 and 8.

A bushing 55 is slid onto the screw 51 and serves as a stop for the coupling of the two thumbs 53 that hold it surrounded by crossing their ends, and which forms a spacer between the head of the screw 51 and the anchor bracket, to put them against the body. What is important is the collar 64 with which the bushing 55 is provided and which is used to prevent the crossing thumbs 53 from being able to give way in the axial direction of the screw 51, the collar on the lower part is flattened so as not to hinder the tilting movement of the locking part 59.

The anchor bracket 50 has on each side of the hole for the screw 51 has two guide blocks 56 which serve to bring the two thumbs 53 closer to each other and place them around the socket 55 the screw to close. In a blind hole 57 in the lower part

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The anchor bracket 50 is centered on a compression spring 58, which serves to secure an elongated locking piece 59, provided with a plunger button 60 at the lower part and a locking cam 61 at the upper end to push back, the cam serves to be between to push the crossing ends of the two coupling thumbs 53, to prevent their distance from each other.

The locking part 59 can be tilted around the head of the screw 51, which has the shape of a spherical cap and fits into a corresponding shaped recess 62 of the bolt 59 inserts, which in its place against the head of the screw through the cap, not shown 40 or the jacket or the housing is held, which is supported at the level of the pivot axis on the part 59 and with a Rear space is provided, which does not hinder the tilting backwards and the subsequent release of the cam 61 between the two Thumb 53. It should be noted that the push button 60 or plunger is in the extension of the compression spring 58 and has a centering pin 63, which reaches through the bolt 59 and protrudes on the other side so that it enters the space of the centering spring 58 penetrates.

The operation of the device is very simple. As soon as a pressure is exerted on the button 60, the part 59 tilts around the hemispherical head of the screw 51 / and the locking cam 51 goes back and pulls out, between the two thumbs 53, of which

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crossing ends become free and can move away from each other. Under the downward pressure exerted on the belt 43, the detachable tab is released and thus releases the belt.

Conversely, it is sufficient for assembly, the rod 52 of the detachable tab to push under the belt 43, the two thumbs 53 under the cap (not shown) or a coat on both sides the spring 58 and the bushing 55 to move, then to push the two thumbs maximally upwards or to pivot, but at the same time depress button 60. The two block guides 56 approach the ends of the two thumbs 53 against each other, which are behind the socket 55 cross and releasing the button 60, which is under the action of the spring 58, the bolt 59 tilts to the Ball head of screw 51, and the nooke 51 engages between the upper, crossing ends of the thumbs 53, making the device is locked.

The seventh variant according to Figures 11 and 12 has like that other devices described above an anchor bracket 7O, which is attached to the vehicle body 32 by means of a screw 71 is, and a releasable tab from a rod 72 to the the strap 43 of the belt runs around. At the ends of the pole two coupling thumbs 73 are articulated by means of rivets 74, and one Bushing 75 m ± .t wide retaining collar 8? on the screw 71 is used as a stop, the two thumbs 73 can close,

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in that their ends cross each other. The anchor bracket 70 also carries two block guides 76, which lead to the central axis, which runs through the hole for the screw 71, are fastened symmetrically, these guides serving to the two Thumb 73 to close the socket 75 as soon as they are inserted under the jacket 77 with the detachable tab.

The locking of the two thumbs is, as in the previous case, by engaging a locking cam 78 between them Reached crossing ends, this cam is attached to the upper end of a locking piece 79, which along the anchor bracket 70 mounted displaceably and when it is displaced by two lateral guide pins 80 and by the centering bushing 75 is performed, which extends through the part 79 through a vertical opening. At the lower part of the bolt 79 and at the end of the opening 81 an inclined ramp 82 is attached, which downwards and is inclined towards the vehicle body.

Between the inclined ramp 82 and the centering bushing 75 there is a compression spring 83 in the opening 81, which passes through two vertical pins 84 and 85 is held, which are inserted into the socket 75 and into the ramp 82, with the spring 83 to it serves to push the bolt 79 down and the bolt cam 78 between the ends of the two coupling thumbs 73 in engagement to keep. A button plunger 86 is arranged in front of the ramp 82,

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αϊ

which penetrates the housing 77 or the jacket through an opening. This button 86 is through the housing 77 means a stop collar 87 and has an inclined ramp 88 on its inner end. This ramp 88 has the same Inclination like the ramp 82 of the bolt 79 and is constantly kept in contact with this under the action of the spring 83, the pushes her down.

The device works in the following way. Once the pole

72 is carried under the strap 43 and the two thumbs

73 can be moved under the jacket 77 by moving it upwards pushes or pushes, the two block guides 76 close them around the bushing 75. If you press the plunger 86 at the same time, with the purpose of raising the ramp 82, the associated bolt 79 and the cam 78 fixedly connected to it, the Cross the ends of the two thumbs behind the socket 75, as they will not meet any obstacles here. As soon as you get the pressure on the If the plunger button 86 is canceled, the spring 83 pushes the latch 79 back downwards, whereby the cam 78 is positioned between the two crossing ends of the thumbs engages and locks the coupling.

Conversely, a pressure on the ram button 86 releases the ramp 82 climb on the ramp 88 of the ram and lift the part 79 and

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its cam 78, which is out of engagement between the ends of the two thumbs come out, which spread by a downward pull exerted on the belt 43 and release the rod 72 as well as the strap that runs over them.

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Claims (16)

Applicant BRITAX (GECO) S.A., 1, route d'Hericy 77870 Vulaines S / Seine France B.P. 3 claims 1. Device for the urgent or urgent release of a safety belt strap, characterized in that it consists of an anchor bracket to be attached to the vehicle, from one detachable tab to which the belt strap is coupled or attached, from means for coupling the two tabs through Conjugation of forms, from an elastic organ which exerts such a pressure that the conjugated forms into one another get into engagement and from an element for releasing the detachable, elastically supported and from the anchor bracket worn flap. 2. Device according to claim 1, characterized in that the coupling means consists essentially of a projecting part the detachable tab and a cavity portion of the conjugate shape used by the anchor tab. 3. Apparatus according to claim 2, characterized in that the projecting part consists of a coupling bolt and that the cavity is a hole or a bore in the anchor bracket, which can accommodate the coupling bolt. 4. Device according to one of claims Λ to 3, characterized in that ^ 909838/0655 indicates that the release guide is a plunger that is slidable is mounted transversely in the anchor bracket so that it pushes back the releasable bracket against the action of the elastic organ can that the conjugated forms are separated from each other. 5. Device according to one of claims 1 to 4, characterized in that that the elastic member is a leaf spring with at least one folded tongue that the detachable tab against the Anchor tab presses, and at least one tongue is elastically supported against the upper end of the detachable tab so, that the latter is ejected or ejected as soon as the conjugate forms by the action of the release element be solved. 6. Device according to one of claims 1 to 4, characterized in that that a stop is provided behind the upper part of the detachable tab so that the tilting of the tab under the Effect of an oblique pull on the belt strap is limited. 7. Apparatus according to claim 6, characterized in that the stop consists essentially of a tongue which is folded down and through an incision in the anchor bracket is formed. 909838/0655 ! 907717 - «ST - 8. Apparatus according to claim 6, characterized? the stop consists essentially of the rear edge of a cutout in the anchor tab, in which the upper end the detachable tab engages " 9. Apparatus according to claim 1, characterized in that the coupling means from a locking part as a projection on one of the two tabs, made up of two coupling thumbs attached to the are hinged to another bracket? that their ends can cross and the belt with the locking part by looping unite, and consist of a & iegelorgan, which to is designed to slide between the ends of the thumbs, once they are crossed. - 10. Apparatus according to claim 9, characterized in that the locking part is a rigid mandrel or bolt protruding from the anchor bracket and that the coupling thumb is articulated are hinged to the detachable tab, around which the strap of the belt can slip or slide » 11. Apparatus according to claim 9 and 10, characterized in that that the locking organ is a finger of a movable part, ■ which is elastic in the sense of engagement of the finger between the crossed ends of the clutch thumb is pressed « 909838 / Q6S5 -ar- 12. The device according to claim 11, characterized in that the movable part which carries the RJegelfinger is displaceable is on the stop part. 13. Apparatus according to claim 11, characterized in that the moving part that carries the locking finger can be tilted around a fixed point on the anchor plate .. 14. The device according to claim 11, characterized in that the movable part which carries the locking finger is displaceable is stored along the anchor bracket. 15. Device according to one of claims 9 to 14, characterized characterized in that it has locking ramps which are associated with the tab with the stop, the ramps ensure that the coupling thumbs come closer to the stop. 16. Device according to one of claims 9 to 14, characterized characterized in that it has means which elastically influence the two coupling thumbs in the sense of the approach of their ends. 909 83 8/0 6 55