SE537731C2 - Device for draft reduction in the event of a crash - Google Patents

Device for draft reduction in the event of a crash Download PDF

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Publication number
SE537731C2
SE537731C2 SE1350495A SE1350495A SE537731C2 SE 537731 C2 SE537731 C2 SE 537731C2 SE 1350495 A SE1350495 A SE 1350495A SE 1350495 A SE1350495 A SE 1350495A SE 537731 C2 SE537731 C2 SE 537731C2
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SE
Sweden
Prior art keywords
bolt
rollers
belt
event
accident
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Application number
SE1350495A
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Swedish (sv)
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SE1350495A1 (en
Inventor
Johan Knälmann
Dan Loftén
Kenneth Söder
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Scania Cv Ab
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Publication date
Application filed by Scania Cv Ab filed Critical Scania Cv Ab
Priority to SE1350495A priority Critical patent/SE537731C2/en
Priority to DE102014005565.5A priority patent/DE102014005565B4/en
Publication of SE1350495A1 publication Critical patent/SE1350495A1/en
Publication of SE537731C2 publication Critical patent/SE537731C2/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00Safety belts or body harnesses in vehicles
    • B60R22/18Anchoring devices
    • B60R22/185Anchoring devices with stopping means for acting directly upon the belt in an emergency, e.g. by clamping or friction
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00Safety belts or body harnesses in vehicles
    • B60R22/18Anchoring devices
    • B60R2022/1818Belt guides
    • B60R2022/1825Belt guides using rollers

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

Abstract

SAMMANDRAG Uppfinningen ayser en lasanordning (3) for reducering ay den fria balteslangden, foretradesvis avsedd att anvandas i fordon sasom exempelvis i lastbilar, bussar e.d. innefattande tya yttre rullar (9,10) och en mittrulle (11) kring yilka baltet (2) loper. Uppfinningen uppnas genom att de yttre rullarna (9,10) Or anordnade att kunna justeras i forhallande till 10 yarandra i syfte att anpassa baltets (2) glidning forhallande till en baltad persons vikt. SUMMARY The invention provides a welding device (3) for reducing the free belt hose, preferably intended for use in vehicles such as in trucks, buses and the like. comprising the outer rollers (9, 10) and a central roller (11) around which the bolt (2) runs. The invention is achieved in that the outer rollers (9, 10) are arranged to be adjustable in relation to each other in order to adapt the sliding of the bolt (2) in relation to the weight of a bolted person.

Description

ANORDNING FOR FRAMKASTREDUCERING VID KROCK TEKNISKT OMRADE Foreliggande uppfinning avser generellt sakerhetsbalten for fordon och sarskilt anordningar vid sakerhetsbalten som reducerar omfattningen av eller storleken av den baltade personens rorelse framat, framkast, vid ett olyckstillbud. Uppfinningen 10 Or speciellt avsedd for anvandning i kommersiella och/eller tunga fordon sAsom exempelvis i lastbilar, bussar etc. dar den uppfinningsenliga las- eller sparranordningens funktion framforallt Or avsedd att reducera/minska den fria balteslangden, dvs langden balte mellan tva infastningspunkter. Darigenom 15 reduceras ocksa den tojning i sakerhetsbaltet som darmed endast kan uppsta i en kortare del av baltet. Storleken av framkastet reduceras vid ett olyckstillbud. Uppfinningen avser Oven ett fordon i vilket en anordning enligt uppfinningen anvands. TECHNICAL FIELD The present invention relates generally to the safety belt for vehicles and in particular devices to the safety belt which reduce the extent or magnitude of the bolted person's movement forward, forward, in the event of an accident. The invention is particularly intended for use in commercial and / or heavy vehicles such as, for example, in trucks, buses, etc., where the function of the loading or sparring device according to the invention is primarily intended to reduce / decrease the free belt length, ie the length of the belt between two attachment points. This also reduces the elongation in the safety belt which can thus only arise in a shorter part of the belt. The size of the projection is reduced in the event of an accident. The invention also relates to a vehicle in which a device according to the invention is used.

TEKNIKENS BAKGRUND For alla moderna personbilar och tunga fordon är det i mAnga 25 lander lagkrav pa att sakerhetsbalten finns monterade som personskydd och att de anvands av ferare och passagerare. Vid en olyckshandelse, t.ex. vid en krock, Or avsikten att sakerhetsbaltet skall forhindra att anvandaren kastas framAt eller ut ur fordonet med risk for svdra skador som foljd. FOY. att 30 skydda sA effektivt som mojligt bor baltet vara ordentligt spant for att reducera det framkast som alltid uppstar vid det plOtsliga stopp som uppstdr vid en olyckshandelse. Baltet Or tillverkat av en stark vav men som arida medger en viss tojning vid de krafter som uppstAr vid en olycka och ett visst fram35 kast uppstar Oven am baltet Or optimalt spant kring anvandaren innan olyckstillbudet. Ju langre den fria balteslangden Or desto storre total tojningslangd uppstdr vid olyckstillbudet, 1 och desto star-re eller langre blir framkastet for anvandaren. Anvandaren riskerar att sla emot inredningsdetaljer i fordo-net. Den fria baltesldngden kan med andra ord spela en avgorande roll for omfattningen av personskadorna vid olyckan. 5 I mOnga fordon och tillampningar är den fria bdlteslangden betydande och inte minst i tyngre kommersiella fordon, beroende av konstruktionen av stolarna, infastningspunkternas placering och dragningen av bdltet. Aven packningsgraden av bdltesrullen pOverkar framkastets storlek, genom att baltet 10 vid ett olyckstillbud dras ut nOgot packas baltet hardare runt den i och for sig rotationslOsta baltesrullens axel innan det stoppas helt. Hela baltesldngden kan alltsd sagas vara verksam vid ett olyckstillbud och tojningen av baltet i hela dess verksamma langd leder till att framkastet blir oonskat stort 15 vilket betydligt okar risken for allvarliga skador p1 forare och/eller passagerare nar de kastas mot fordonets ratt, vindruta eller andra fasta inredningsdetaljer. BACKGROUND ART For all modern passenger cars and heavy vehicles, in many 25 countries there are legal requirements that the safety belt is fitted as personal protection and that it is used by drivers and passengers. In the event of an accident, e.g. in the event of a collision, Or the intention that the safety belt shall prevent the user from being thrown forward or out of the vehicle with the risk of serious injury as a result. FOY. To protect as effectively as possible, the bolt should be properly tensioned to reduce the projection that always occurs at the sudden stop that occurs in the event of an accident. The bolt Or made of a strong hub but as an arida allows a certain elongation at the forces that arise in the event of an accident and a certain forward throw arises. The longer the free belt length Or, the greater the total strain length that arises in the event of an accident, 1 and the larger or longer the projection becomes for the user. The user risks hitting interior details in the vehicle. In other words, the free belt length can play a decisive role in the extent of the personal injuries in the accident. In many vehicles and applications, the free belt length is significant and not least in heavier commercial vehicles, depending on the construction of the seats, the location of the attachment points and the pulling of the belt. The degree of packing of the belt roller also affects the size of the projection, in that the belt 10 is pulled out slightly in the event of an accident. The entire bolt length can thus be said to be effective in the event of an accident and the stretching of the bolt throughout its effective length leads to the projection being undesirably large, which significantly increases the risk of serious injuries to drivers and / or passengers when thrown against the vehicle's steering wheel, windscreen or other. fixed interior details.

Det finns olika kanda satt att motverka detta problem. Ett 20 vanligt sdtt är att lOta installera en sO kallad bOltesstrOckare, som stracker baltet med hjalp av en speciell mekanism sI snart en hastig eller tvar inbromsning detekteras, exempelvis genom en sensor pd elektronisk vag. Detta Or ett forhallandevis omfattande system vilket clamed ocksO blir dyrt och 25 komplicerat att installera. Dessa system kan vara tillval. Trots ett sadant system, som aktivt stracker upp baltet vid en krock, kommer anda hela den aterstaende verksamma balteslangden fran baltesrullen till de normala infastningspunkterna att utsattas for tojning. There are various ways to counteract this problem. A common way is to have a so-called bolt tensioner installed, which tightens the bolt by means of a special mechanism as soon as a rapid or two-way braking is detected, for example by a sensor on an electronic scale. This Or a relatively comprehensive system which clamed also becomes expensive and complicated to install. These systems can be optional. Despite such a system, which actively stretches the bolt in the event of a collision, the spirit of the entire remaining active belt hose from the bolt roll to the normal attachment points will be subjected to stretching.

Det Or ocksO onskvdrt att anordningen och dess montering kan utfaras och placeras/monteras pA ett estetiskt tilltalande sOtt. T.ex. vill man om mojligt gOrna dolja bOltets rullar och infastningspunkter sA lAngt mojligt. 2 Ett grundlaggande onskemal är alltsa att konstruktionen skall underlatta monteringen, vara estetiskt tilltalande och ta sa liten plats som mojligt. Andra onskemal är att en glidning 5 skall tillatas av baltet mellan rullarna nar visst lastfall uppnatts for att reducera risken for personskada. Det är alltsa onskvart att bromskraften eller kraftreduceringen i konstruktionen kan anpassas till den baltade personens vikt. 10 Olika losningar pa namnda problem är sedan tidigare kanda. It is also desirable that the device and its mounting can be designed and placed / mounted in an aesthetically pleasing manner. For example. If possible, you want to hide the rollers and attachment points of the bolt as far as possible. 2 A fundamental wish is that the construction should facilitate assembly, be aesthetically pleasing and take up as little space as possible. Other wishes are that a slip 5 should be allowed by the bolt between the rollers when a certain load drop has been reached in order to reduce the risk of personal injury. It is therefore unfortunate that the braking force or the force reduction in the construction can be adapted to the weight of the balled person. 10 Different solutions to the mentioned problems are already known.

Exempelvis visar patentpublikationen DE2401703 en balteskonstruktion med en stoppanordning placerad nara baltesrullen och dess infastning i karossen. Stoppanordningen bestar av tre 15 rullar kring vilka baltet loper pa sin vag fran baltesrullen via en omlankare och vidare over fordonsstolen och dess passagerare. Vid ett kraftigt ryck i baltet glider mittrullen, mot verkan av en fjader, in mot de tva ovriga rullarna och laser tvart och stumt baltet genom den friktion som uppstar 20 mellan baltet och rullarna. Konstruktionen medger inte att baltet tillats glida alls och anordningen medger inte att stoppfunktionen kan anpassas till passagerarens vikt. Den fria balteslangden paverkas dessutom obetydligt av denna konstruktion varfor baltets tojning blir vasentlig vid ett 25 olyckstillbud. For example, patent publication DE2401703 discloses a bolt construction with a stop device placed near the bolt roller and its attachment to the body. The stopping device consists of three rollers around which the belt runs on its way from the belt roller via a re-diverter and further over the vehicle seat and its passengers. In the event of a strong jerk in the bolt, the center roller slides, against the action of a spring, towards the other two rollers and lasers the ball sharply and dumbly through the friction that arises between the bolt and the rollers. The construction does not allow the bolt to slide at all and the device does not allow the stop function to be adapted to the weight of the passenger. In addition, the free belt hose is insignificantly affected by this construction, so that the elongation of the bolt becomes essential in the event of an accident.

I patentpublikationen FR22268visas olika stoppanordningar vid en balteskonstruktion. I en variant anvands tva rullar varav den ena glider i ett spar i forhallande till den andra 30 rullen, motverkan av en fjader. Den andra rullen ar utformad med en ojamn yta, med tvargaende "asar och dalar". Ett balte loper runt hada rullarna och nar ett olyckstillhud intraffar glider den forsta rullen in mot den andra rullen och laser haltet tvart. 3 I olika varianter av konstruktionen anvands tre rullar, varav mittrullen styrs av en pendelkonstruktion med en massa som forflyttas vid ett olyckstillbud. Olika losningar pa detta 5 visas men gemensamt for dem Or att baltet lases tvart vid en eventuell krock. Konstruktionerna medger ingen kraftbegransning, glidning eller injustering/anpassning till den baltade personens vikt. 10 Kand teknik visar alltsa inte nagon losning som reducerar eller begransar den fria balteslangden och som samtidigt medger en justerbar kraftbegransning pa ett enkelt, utrymmesbesparande och kostnadseffektivt satt. 15 Det foreligger darfor ett behov av en ny och forbattrad konstruktion som medger en enkel reducering av den fria balteslangden och som medger en justerbar kraftbegransning som exempelvis kan anpassas till den baltade personens vikt pa ett enkelt och kostnadseffektivt satt. Monteringen bor vara enkel 20 och ta sa liten plats som mojligt och ha en utformning sa att den latt kan monteras i tranga utrymmen och pa ett estetiskt tilltalande satt. In the patent publication FR22268 various stopping devices are shown in a bolt construction. In a variant, two rollers are used, one of which slides in a groove in relation to the other roller, counteracting a spring. The second roller is designed with an uneven surface, with transverse "axes and valleys". A belt runs around the rollers and when an accidental skin occurs, the first roller slides towards the second roller and the laser level is sharp. In different variants of the construction, three rollers are used, of which the center roller is guided by a pendulum construction with a mass which is moved in the event of an accident. Different solutions to this are shown but common to them is that the bolt is read abruptly in the event of a collision. The constructions do not allow force limitation, sliding or adjustment / adaptation to the weight of the balled person. Thus, state-of-the-art technology does not show any solution which reduces or limits the free belt hose and which at the same time allows an adjustable force limitation in a simple, space-saving and cost-effective way. There is therefore a need for a new and improved construction which allows a simple reduction of the free belt hose and which allows an adjustable force limitation which can, for example, be adapted to the weight of the bolted person in a simple and cost-effective manner. The installation should be simple and take up as little space as possible and have a design so that it can be easily mounted in tight spaces and in an aesthetically pleasing way.

SAMMANFATTNING AV UPPFINNINGEN Ett andamal med uppfinningen är att losa ovan namnda problem och att pavisa en las- eller sparranordning vid sakerhetsbalten som gar det majligt att reducera den fria balteslangden 30 i syfte att minimera forarens och/eller passagerarens framkast vid ett olyckstillbud. SUMMARY OF THE INVENTION An object of the invention is to solve the above-mentioned problems and to point out a welding or sparing device at the safety belt which makes it possible to reduce the free belt hose 30 in order to minimize the driver's and / or passenger's advance in the event of an accident.

Uppfinningen har aven som syfte att tillata en kraftbegransning och att baltet skall kunna glida nagot genom lasanord35 ningen nar ett visst forbestamt lastfall intraffar. 4 Ett ytterligare dndamal med uppfinningen är att kraftbegrdnsningen skall vara justerbar och exempelvis kunna anpassas till forarens/passagerarens vikt. The invention also has for its object to allow a force limitation and that the bolt should be able to slide somewhat through the locking device when a certain predetermined load drop occurs. A further object of the invention is that the force limitation must be adjustable and, for example, be adaptable to the weight of the driver / passenger.

Ett ytterligare dndamal med uppfinningen är att konstruktionen skall vara enkel och funktionell. A further object of the invention is that the construction should be simple and functional.

Ett ytterligare andamal med uppfinningen är att konstruktionen 10 skall vara forhallandevis liten och utrymmesbesparande och ddrmed latt att montera i tranga utrymmen. A further object of the invention is that the construction 10 should be relatively small and space-saving and thus easy to assemble in tight spaces.

Ett ytterligare dndamal med uppfinningen ar att konstruktionen skall innehalla fa delar och vara kostnadseffektiv att till-15 verka. A further object of the invention is that the construction should contain few parts and be cost-effective to manufacture.

Ett ytterligare dndamal med uppfinningen ar att lasfunktionen i den ordinarie bdltesrullen skall kunna elimineras. 20 Ett ytterligare dndamal med uppfinningen är att konstruktionen skall vara sa stabil att den kan hantera alla lastfall som kan upptrdda vid ett olyckstillbud. A further object of the invention is that the loading function in the ordinary image roller can be eliminated. A further object of the invention is that the construction must be so stable that it can handle all load cases that may occur in the event of an accident.

Ett ytterligare dndamal med uppfinningen är att monteringen av 25 den kan ske pa ett estetisk tilltalande satt. A further object of the invention is that the assembly of it can take place in an aesthetically pleasing manner.

Dessa och ytterligare dndamal och fordelar uppnas enligt uppfinningen med en balteskonstruktion som uppvisar de sardrag som framgar av patentkravets 1 kannetecknande del. These and further features and advantages are achieved according to the invention with a bolt construction which has the features which appear from the cantilevered part of claim 1.

Uppfinning avser alltsa generellt sakerhetsbalten for fordon och sdrskilt anordningar vid sdkerhetsbdlten som reducerar omfattningen av eller storleken av den bdltade personens rorelse framat, det sa kallade framkastet, vid ett olyckstill- 35 bud. Uppfinningen är speciellt avsedd att reducera/minska den fria balteslangden, dvs ldngden bdlte mellan tvd infastnings- punkter for att reducera den tuning i sdkerhetsbiltet som di endast kan uppstd i en kortare del av baltet. 5 Vid ett olyckstillbud spelar den fria baltesldngden en avgarande roll fir olyckans utfall. Nar hela balteslangden Or verksam blir framkastet orimligt ldngt och en uppenbar risk foreligger fir allvarliga skador nar den baltade personen traffar fasta foremdl i fordonets inredning, sdsom exempelvis 10 fordonets ratt. The invention thus generally relates to the safety belt for vehicles and in particular devices at the safety belt which reduce the extent or size of the belted person's movement forward, the so-called projection, in the event of an accident. The invention is especially intended to reduce / decrease the free belt hose, ie the length alternates between two attachment points in order to reduce the tuning in the safety belt which can only occur in a shorter part of the belt. 5 In the event of an accident, the free belt length plays a decisive role in the outcome of the accident. When the entire belt hose is active, the propulsion becomes unreasonably long and there is an obvious risk of serious injuries when the bolted person hits solid objects in the vehicle's interior, such as the vehicle's steering wheel.

Uppfinningen bestir huvudsakligen av tre rullar dar forslagsvis tvd yttre rullar är forskjutbara i spar i forhdllande till varandra. Aven den mittre rullen, den lasande rullen, är 15 forskjutbar men i en riktning vasentligen tvars de yttre rullarna. Den mittre rullen Or lampligtvis fjaderbelastad varvid fjdderkraften stravar efter att hdlla tillbaka rullen fran att ga i ingrepp med, eller mot, de andra tvd. De tvd yttre rullarna kan forskjutas/justeras i forhdllande till varandra med hjdlp av en foretrddesvis mekanisk justeringsmekanism. Syftet med det är att Oka eller minska friktionen mellan de tre rullarna och bdltet vid belastning sdsom vid ett olyckstillbud. Baltet loper mellan de tre rullarna och vid ett olyckstillbud dras den mittre rullen, motverkan av en fjdder- 25 kraft, mot anliggning mot de yttre rullarna sa att en kraftig friktion uppstdr mellan baltet och den mittre och de yttre rullarna varvid bdltet lases med omedelbar verkan. Detta resulterar i att inte hela bdltets ldngd utsdtts for tojning utan endast den del av baltet som befinners sig frdn ldskon- 30 struktionen och dess frdmre nedre infdstningspunkt. The invention mainly consists of three rollers where, for example, two outer rollers are displaceable in grooves in relation to each other. The middle roller, the lasing roller, is also displaceable, but in one direction the outer rollers are substantially transverse. The middle roller is suitably spring loaded, with the spring force straining to hold back the roller from engaging, or against, the other two. The two outer rollers can be displaced / adjusted in relation to each other by means of a preferred mechanical adjustment mechanism. The purpose of this is to increase or decrease the friction between the three rollers and the load under load, as in the event of an accident. The belt runs between the three rollers and in the event of an accident, the middle roller, against the action of a spring force, is pulled against the outer rollers so that a strong friction arises between the bolt and the middle and outer rollers, whereby the belt is read with immediate effect. . As a result, not the entire length of the belt is subjected to stretching, but only the part of the belt which is located outside the shaft structure and its lower lower attachment point.

Genom den uppfinningsenliga konstruktionen elimineras nackdelarna med kind teknik och en mer andamdlsenlig, saker, funktionell och ldttmonterad balteskonstruktion erhdlls. 6 Ytterligare sdrdrag och fordelar med uppfinningen framgdr av den foljande, mer detaljerade, beskrivningen av uppfinningen samt av bifogade ritningar och Ovriga patentkrav. The invention according to the invention eliminates the disadvantages of cheek technology and a more breathable, things, functional and light-mounted bolt construction is obtained. Further features and advantages of the invention will become apparent from the following, more detailed, description of the invention, and from the accompanying drawings and other claims.

KORTFATTAD RITNINGSFoRTECKNING Uppfinningen beskrivs ndrmare nedan i nagra fOredragna utforingsexempel, med ledning av bifogade ritningsfigurer. BRIEF DESCRIPTION OF THE DRAWINGS The invention is described in more detail below in some preferred embodiments, with reference to the accompanying drawing figures.

Figur 1 visar en fordonssto1 rakt framifran med ett bdlte monterat och den uppfinningsenliga ldsanordningen placerad ndra, eller i stallet for, en omldnkare av baltet for att dstadkomma en reducering av den fria bd1tes1dngden. Figure 1 shows a vehicle body straight from the front with a belt mounted and the holding device according to the invention placed second, or in place of, a rerouter of the bolt to achieve a reduction of the free belt length.

Figur 2 visar samma fordonsstol som i figur 1 men frdn sidan varvid 1dsanordningen for att reducera balteslangden framgar schematiskt. Figure 2 shows the same vehicle seat as in figure 1, but from the side where the device for reducing the belt hose is shown schematically.

Figur 3 visar narmare i detalj och fran sidan den uppfinningsenliga ldsanordningen schematiskt i ett fOrsta ldge ddr bdltet är monterat men inte spdrrat av anordningen for reducering av balteslangden. Figure 3 shows in more detail and from the side the locking device according to the invention schematically in a first line where the belt is mounted but not traced by the device for reducing the belt hose.

Figur 4 visar samma vy som figur 3 men med bdltet i ett sparrat lage sdsom vid belastning efter ett olyckstillbud. Figure 4 shows the same view as figure 3 but with the body in a sparse position as in load after an accident.

Figur visar ndrmare en sned sidovy av rullarna i uppfinningen varvid framgdr en justeringsanordning med vilken 30 rullarna kan justeras i forhdllande till varandra for att variera kraftreduceringen i systemet. Figure shows a more oblique side view of the rollers in the invention, showing an adjusting device with which the rollers can be adjusted in relation to each other to vary the force reduction in the system.

Figur 6 visar hur de yttre rullarna kan placeras pa olika nivd i ferhAllande till varandra sd att en anpassad kraftreducering kan erhdllas. 10 7 Figur 7 visar principen for de tre rullarna och hur den mothallande kraften teoretiskt kan beraknas. Figure 6 shows how the outer rollers can be placed at different levels in relation to each other so that an adapted force reduction can be obtained. Figure 7 shows the principle of the three rollers and how the opposing force can theoretically be calculated.

BESKRIVNING AV FoREDRAGNA UTFoRINGSFORMER Uppfinning avser alltsd sakerhetsbalten for fordon och sarskilt anordningar vid sadana sakerhetsbalten som reducerar framkastet vid ett olyckstillbud. Uppfinningen Or speciellt 10 avsedd att reducera och minska den fria balteslangden mellan tva infastningspunkter far att reducera den tOjning i sakerhetsbaltet som uppstar vid ett kraftigt ryck sdsom vid ett olyckstillbud. DESCRIPTION OF PREFERRED EMBODIMENTS The invention thus relates to the safety belt for vehicles and in particular devices to such safety belts which reduce the projection in the event of an accident. The invention is especially intended to reduce and reduce the free belt hose between two attachment points to reduce the strain in the safety belt which arises in the event of a strong jerk, as in the event of an accident.

Figur I visar en fordonsstol 1 rakt framifrOn med ett balte 2 monterat och den uppfinningsenliga ids- eller sparranordningen 3 placerad upptill, pi eller vid stolens ryggstod 4 nara en tOnkt baltad persons vOnstra axel, for att Ostadkomma en reducering av den fria balteslangden 2F, dvs den langd balte 20 som kan utsattas for tojning vid ett olyckstillfalle. LOsanordningen 3 for reducering av den fria bOlteslangden Or i figuren monterad pi den plats som en omlankare av baltet 2 lampligen skulle kunna vara placerad. Baltet 2 Or i Ovrigt i figuren monterat pi vanligt sOtt, dvs fran sin fasta framre 25 nedre infastningspunkt 5 vid stolens 1 vanstra sida stracker sig baltet 2 Over satet 6 och darmed Over en tankt baltad person till det losbara bOltesfastet 7 vid stolens 1 andra hogra sida och vidare upp till den uppfinningsenliga lasanordningen 3 och darefter vidare ned bakom stolens 30 ryggstod 4 till en baltesrulle 8 av kand typ (se fig. 2) som i sin tur Or fastad i fordonets golv, kaross eller liknande. Figure I shows a vehicle seat 1 straight in front with a belt 2 mounted and the invention or sparring device 3 according to the invention placed at the top, on or at the back of the chair 4 near the left shoulder of a thoughtfully bolted person, in order to achieve a reduction of the free belt hose 2F, i.e. the long belt 20 which can be subjected to stretching in the event of an accident. The loosening device 3 for reducing the free bolt hose Or in the figure is mounted in the place where a re-anchor of the bolt 2 could suitably be placed. The belt 2 Or in the rest of the figure mounted in the usual way, ie from its fixed front 25 lower attachment point 5 at the left side of the chair 1, the bolt 2 extends over the seat 6 and thus over a tank bolted person to the detachable bolt fastener 7 at the second hogra of the chair 1 side and further up to the locking device 3 according to the invention and then further down behind the backrest 4 of the seat 30 to a bolt roll 8 of the kand type (see Fig. 2) which in turn is fastened to the floor, body or the like of the vehicle.

Figur 2 visar samma fordonsstol 1 som i figur 1 men frOn sidan varvid rullarna 9,10,11 i lAsanordningen 3 framgAr 35 schematiskt. Baltet 2 leper mellan/kring tva justerbara yttre rullar 9,10 respektive en mittre fjaderbelastad lasande rulle 11. 8 Figur 3 visar narmare i detalj och fran sidan den uppfinningsenliga lisanordningen 3 schematiskt i en fOrsta fas, i ett forsta oust lage, dar baltet 2 ar placerat/monterat over en tankt baltad person men annu inte last/sparrat i lasanordning- 5 en 3. Rullarna 9-11 Or lagrade och forskjutbara med hjalp av spar 12a-c anordnade exempelvis i ett omgivande hus/hOlje 13. De yttre rullarna 9,10, i figuren visade som den byre och nedre rullen, kan forskjutas i vertikal riktning med hjalp av en mekanisk justeringsanordning 14 (se fig 5) medan den mittre 10 lasande rullen 11 kan forskjutas i horisontell riktning, i figuren. Den mittre rullen 11 och dess axel 15 stravar efter att forskjutas at vanster i figuren med hjalp av en eller flera dragfjadrar 16 och spanner darvid baltet 2 som loper kring den mittre rullen 11. Figure 2 shows the same vehicle seat 1 as in figure 1, but from the side whereby the rollers 9,10,11 in the locking device 3 appear schematically. The bolt 2 slips between / around two adjustable outer rollers 9,10 and a middle spring-loaded loading roller 11. Figure 3 shows in more detail and from the side the inventive lashing device 3 schematically in a first phase, in a first oust layer, where the bolt 2 is placed / mounted over a tank-bolted person but not yet loaded / sparred in the loading device 5. The rollers 9-11 are stored and displaceable by means of spar 12a-c arranged, for example, in a surrounding housing / housing 13. The outer rollers 9,10, shown in the figure as the upper and lower roll, can be displaced in the vertical direction by means of a mechanical adjusting device 14 (see Fig. 5) while the middle 10 loading roller 11 can be displaced in the horizontal direction, in the figure. The middle roller 11 and its shaft 15 strive to be displaced to the left in the figure with the aid of one or more tension springs 16, thereby tensioning the bolt 2 which runs around the middle roller 11.

Vid ett olyckstillbud uppstar eller okar accelerationen i baltet 2 och krafter uppstar pa grund av rullarnas 9-11 inbardes geometri och trigheter. Dessa krafter pressar den mittre lasande rullen 11 till ingrepp mot de tva yttre 20 rullarna 9,10, alltsa i riktning mot hoger i figuren, varvid baltet 2 lasas fast mellan rullarna 9-11 pa grund av den friktion som uppstar mellan rullarna 9-11 och baltet 2. In the event of an accident, the acceleration in the bolt 2 arises or increases and forces arise due to the geometry and triggers of the rollers 9-11. These forces press the middle loading roller 11 into engagement with the two outer rollers 9,10, i.e. in the direction of the right in the figure, the bolt 2 being welded between the rollers 9-11 due to the friction which arises between the rollers 9-11 and the bolt 2.

Figur 4 visar samma vy som figur 3 men med baltet 2 i ett list 25 eller sparrat lage sasom det kan se ut efter ett olyckstillbud di baltet 2 ryckts till med pafoljd att den mittre rullen 11 fOrskjutits mot verkan av fjadern 16 och kilats fast mellan de tva yttre rullarna 9,10. Figure 4 shows the same view as figure 3 but with the bolt 2 in a strip 25 or sparred layer as it may look after an accident in which the bolt 2 has been pulled up with the consequence that the middle roller 11 has been displaced against the action of the spring 16 and wedged between the two outer rollers 9,10.

Figur visar narmare, snett underifran och mer i detalj, en sned sidovy av de tre rullarna 9-11 i den uppfinningsenliga las- eller sparranordningen 3 varvid framgar hur en justeringsmekanism 14 placerats yid de yttre rullarnas 9,10 yttre andar och med vilken de yttre rullarna 9,10 och deras axlar 35 kan forskjutas i forhallande till varandra fir att variera och anpassa den Onskade kraftreduceringen i konstruktionen. Rullarna 9,10 stalls in med hjalp av exempelvis en ratt 17 mekaniskt kopplad till ett kugghjul 18 som samtidigt paverkar tva 9 stOnger 19a,b forsedda med kuggar. Kuggstangerna 19a,b star i sin ena ande i farbindelse med var sin rulle 9,10, via deras axlar, och nar ratten 17 vrids forskjuts de bada rullarna 9,10 fran varandra eller mot varandra. Figure shows closer, obliquely from below and in more detail, an oblique side view of the three rollers 9-11 in the welding or sparring device 3 according to the invention, showing how an adjusting mechanism 14 is placed yid the outer spirits of the outer rollers 9,10 and with which the outer the rollers 9,10 and their shafts 35 can be displaced in relation to each other in order to vary and adapt the desired force reduction in the construction. The rollers 9,10 are adjusted by means of, for example, a knob 17 mechanically coupled to a gear 18 which simultaneously acts on two 9 rods 19a, b provided with teeth. The racks 19a, b stand in one spirit in communication with each roller 9,10, via their shafts, and when the knob 17 is rotated, the two rollers 9,10 are displaced from each other or towards each other.

Darmed kan rullarna 9,10 justeras till en position som motsvarar den kraftkomponent man onskar reglera mot. Den mittre rullen 11 i konstruktionen stravar efter att dras utat, mot vanster i figuren, med hjalp av en eller flera dragfjadrar 16 10 foretrOdesvis placerade pa bada sidor am den mittre rullens 11 andar, och lampligtvis paverkande den mittre rullens 11 centrala axel, och spanner darvid det balte 2 som loper mellan rullarna. 15 Den Ovre och nedre yttre rullen 9,10 kan alltsa justeras i vertikal riktning med hjalp av den mekaniska justeringsanordningen och foretradesvis fixeras i onskat lage. Genom justeringen kan las- eller sparranordningens funktion anpassas till t.ex. den baltade personens vikt sa att en viss glidning 20 uppnas av baltet mellan rullarna nar ett visst lastfall eller grOnsvOrde uppnatts. Glidningen syftar till att reducera risken for personskador am kraften i baltet overstiger ett forutbestamt, och injusterat gransvarde. Las- eller sparranordningen fungerar clamed i praktiken som en kraftreduce- 25 rare. This allows the rollers 9,10 to be adjusted to a position corresponding to the force component you wish to adjust against. The central roller 11 in the structure strives to be pulled outwards, towards the left in the figure, with the aid of one or more tension springs 16 preferably located on both sides of the spirals of the central roller 11, and suitably acting on the central axis 11 of the central roller 11, and spans thereby the belt 2 running between the rollers. The upper and lower outer roller 9,10 can thus be adjusted in the vertical direction by means of the mechanical adjusting device and preferably fixed in the desired position. Through the adjustment, the function of the welding or sparring device can be adapted to e.g. the weight of the bolted person means that a certain sliding of the bolt between the rollers is achieved when a certain load drop or green value is reached. The slip aims to reduce the risk of personal injury if the force in the bolt exceeds a predetermined and adjusted spruce value. The welding or sparing device functions clamed in practice as a force reducer.

Figur 6 visar hur de yttre rullarna 9,10 kan placeras pa olika nivaer i forhallande till varandra och i forhallande till en tankt mittlinje 20. Pa detta satt kan en lasande last F2 30 anpassas. Vinkelnkan foretradesvis alltid vara stOrre On oc. Figure 6 shows how the outer rollers 9,10 can be placed at different levels in relation to each other and in relation to a tank centerline 20. In this way a loading load F2 can be adapted. The angle can preferably always be larger On oc.

Pa detta satt kan kraftreduceringen justeras till ett onskat optimalt vOrde. Kraften i lasningen kan Oven forandras genom att anpassa friktionen mellan den mittre rullen 11 och de yttre rullarna 9,10. Rullarna 9-11 kan tillverkas av olika 35 material sasom stal, nylon, plast, gummi etc och rullarnas 911 yta kan ges olika grad av ytjamnhet fOr att Onskad friktion skall kunna uppnas mot baltet 2. 10 Figur 7 visar principen for de tre rullarna 9-11 i last lage och hur den mothallande kraften i baltet 2 teoretiskt kan beraknas. Den mothallande kraften mot glidning ges ay formeln p x N, dvs am a minskas sa okar p x N. Normalkraften F1 andras 5 med andrad vinkel a, dvs F1 = N x sin a. In this way, the force reduction can be adjusted to a desired optimal value. The force in the welding can be changed by adjusting the friction between the middle roller 11 and the outer rollers 9,10. The rollers 9-11 can be made of different materials such as steel, nylon, plastic, rubber etc. and the surface of the rollers 911 can be given different degrees of surface roughness so that undesired friction can be achieved against the bolt 2. Figure 7 shows the principle of the three rollers 9 -11 in the load layer and how the restraining force in the bolt 2 can theoretically be calculated. The resistance to sliding is given by the formula p x N, ie am a is reduced so okar p x N. The normal force F1 of others 5 with a different angle a, ie F1 = N x sin a.

Beskrivningen ovan ar i forsta hand avsedd att underlatta forstaelsen for uppfinningen. Uppfinningen är naturligtvis inte begransad till de ovan angivna utforingsformerna utan 10 aven andra varianter av uppfinningen är mojliga och tankbara inom ramen for uppfinningstanken och de efterfoljande patentkravens skyddsomfang. The above description is primarily intended to facilitate the understanding of the invention. The invention is of course not limited to the above-mentioned embodiments, but also other variants of the invention are possible and conceivable within the scope of the inventive idea and the scope of protection of the appended claims.

Uppfinningen kan naturligtvis aven anvandas for andra typer av 15 fordon eller i andra applikationer dar sakerhetsbalten anvands som personskydd for forare eller passagerare i handelse av ett olyckstillbud. 11 The invention can of course also be used for other types of vehicles or in other applications where the safety belt is used as personal protection for drivers or passengers in the event of an accident. 11

Claims (4)

PATENTKRAV 1. Lasanordning (3) for reducering av den fria balteslangden, foretradesvis avsedd att anvandas i fordon sasom exempelvis i lastbilar, bussar e.d. innefattande tva yttre rullar (9,10) och en mittrulle (11) kring vilka baltet (2) loper, kAnnetecknad darav att de yttre rullarna (9,10) är anordnade att kunna justeras i forhallande till varandra i vertikal riktning och är forskjutbara med hjalp av en mekanisk justeringsanordning (14) I syfte att anpassa motstandet for baltets (2) glidning i forhallande till en baltad persons vikt, vidare innefattar den mekaniska justeringsanordningen (14) langstrdckta kuggforsedda element (19a,b) vilka kan forskjutas i langdled med hjalp av ett vridbart kuggforsett hjul (18).Welding device (3) for reducing the free belt hose, preferably intended for use in vehicles such as, for example, trucks, buses and the like. comprising two outer rollers (9,10) and a central roller (11) around which the bolt (2) runs, characterized in that the outer rollers (9,10) are arranged to be adjustable in relation to each other in the vertical direction and are displaceable with by means of a mechanical adjusting device (14) In order to adjust the resistance of the sliding of the bolt (2) in relation to the weight of a bolted person, the mechanical adjusting device (14) further comprises elongate toothed elements (19a, b) which can be displaced longitudinally with auxiliary of a rotatable geared wheel (18). 2. Lasanordning (3) enligt patentkrav 1, lannetecknad darav att de yttre rullarnas (9,10), eller deras axlar, är forskjutbara i spar (12a,b).Welding device (3) according to claim 1, characterized in that the outer rollers (9, 10), or their axes, are displaceable in grooves (12a, b). 3. Fordon innefattande en lasanordning (3) enligt nagot av patentkraven 1-2. 12 Cs1 1 / 4 v.) co cs,IC) CO N a 1: %-1 N. m 2 / 4 cr a tz 3 / 4 CI co C) \\\ N ir MEM MEM MEM ■ I VIIIM MEM MEM MEM MEM LA /////////Vehicle comprising a welding device (3) according to any one of claims 1-2. 12 Cs1 1/4 v.) Co cs, IC) CO N a 1:% -1 N. m 2/4 cr a tz 3/4 CI co C) \\\ N ir MEM MEM MEM ■ I VIIIM MEM MEM MEM MEM LA ///////// 4. /4 CI C) U- • csi N4. / 4 CI C) U- • csi N
SE1350495A 2013-04-22 2013-04-22 Device for draft reduction in the event of a crash SE537731C2 (en)

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DE102014005565.5A DE102014005565B4 (en) 2013-04-22 2014-04-16 Locking device for shortening the free belt length and vehicle with such a locking device

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DE102016123307A1 (en) * 2016-12-02 2018-06-07 Trw Automotive Gmbh Force limiting device and safety belt system
DE102017105386B4 (en) * 2017-03-14 2021-03-04 Autoliv Development Ab Belt retractor with belt retractor and force limiter

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Publication number Priority date Publication date Assignee Title
FR2226840A6 (en) 1973-04-20 1974-11-15 Noir Rene Device for locking vehicle safety belt strap - has three parallel rollers, the centre sliding, the others fixed
DE2324595A1 (en) 1973-05-16 1974-12-05 Messerschmitt Boelkow Blohm SAFETY BELT WITH AUTOMATIC REWINDING SYSTEM AND SPRING-LOADED CLAMPING WEDGE
DE2401703B1 (en) 1974-01-15 1974-09-12 Carl Stahl, Gurt- Und Bandweberei, 7922 Herbrechtingen

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