SE504246C2

SE504246C2 - Theft protection for cars

Info

Publication number: SE504246C2
Application number: SE9402280A
Authority: SE
Inventors: Kenneth Hallberg; Eddie Nielsen
Original assignee: Kenneth Hallberg; Eddie Nielsen
Priority date: 1994-06-29
Filing date: 1994-06-29
Publication date: 1996-12-16
Also published as: WO1997022502A1; SE9402280D0; SE9402280L

Abstract

The present invention relates to an anti-theft device for automobiles and other vehicles having combustion engines. The anti-theft device is characterized in that it consists of a sleeve (2) designed to be fitted over the rear end (10) of an exhaust pipe, said sleeve comprising a lock (1) connected to a screw or a shaft (4) provided with a thread, which when turned in one direction by means of the sleeve (2) is designed to cause collet jaws (6) for clamping to the exhaust pipe, and in the other direction to release them. The lock (1) is designed in one position to connect the screw, etc. to the outer sleeve (2) in order to cause the collet jaws (6) to block or release, and in another position to release the screw, etc. (6) from the outer sleeve (2), whereupon the engine cannot be started.

Description

504 246 koppla skruven till höljet, resp lossande av denna förbin- delse, varvid i sistnämnda fallet motorn ej kan starta. 504 246 connect the screw to the housing, or loosen this connection, in which case the motor cannot start.

Man spärrar sáledes effektivt avgasvägen och hindrar pà detta sätt motorn att starta. Klämbackarna kan lätt placeras ett stycke in i avgasröret, varvid det blir svàrt att med våld få loss stöldskyddet, i varje fall utan att ett ev. billarm utlöses.The exhaust path is thus effectively blocked, thus preventing the engine from starting. The clamping jaws can easily be placed some distance into the exhaust pipe, whereby it becomes difficult to forcibly remove the anti-theft protection, in any case without a possible car alarm is triggered.

Medelst klämbackarna, som normalt är utförda i metall, kan man få en effektiv låsning till avgasrörets innervägg. Kläm- backarna kan placeras ett gott stycke in i avgasröret, såsom väsentligt längre är avgasrörets diameter, exempelvis mer än tvâ gånger detta mått. Att medelst en bàgfil kapa ett sà pass stort stycke av avgasröret är svårt och väcker snabbt uppmärksamhet i omgivningen.By means of the clamping jaws, which are normally made of metal, you can get an effective locking to the inner wall of the exhaust pipe. The clamping jaws can be placed a good distance into the exhaust pipe, as the diameter of the exhaust pipe is significantly longer, for example more than twice this dimension. Cutting such a large piece of the exhaust pipe with a hacksaw is difficult and quickly attracts attention in the surroundings.

Làset kan lätt sättas pà avgasröret och lika enkelt borttagas frän detta för den som har nyckeln till làset.The lock can easily be put on the exhaust pipe and just as easily removed from it for the person who has the key to the lock.

Ritning: Uppfinningen är exemplifierad i bifogad ritning.Drawing: The invention is exemplified in the accompanying drawing.

Utföringsexempel: I den bifogade figuren visas ett stöldskydd enligt uppfin- ningen, avsett att träs över bakänden av ett avgasrör (10) till en bil eller annat förbränningsmotorförsett fordon.Exemplary embodiment: The attached figure shows an anti-theft device according to the invention, intended to be threaded over the rear end of an exhaust pipe (10) to a car or other internal combustion engine-equipped vehicle.

Stöldskyddet innefattar ett bakåt slutet hölje (2) med ett i bakänden anordnat làs (1). Höljet är förbindbart med en skruv eller gängförsedd axel (4), och vid (3) är anordnad en gummiring. (5) är ett innerhölje kring axeln (4). Vid (8) är 504 246 anordnad en bygel och vid (9) en mutter kring axeln (4). (6) är två (eller flera) klämbackar i metall eller stål, avsedda att kunna fastklämmas mot avgasrörets innervägg i applicerat tillstånd.The anti-theft device comprises a rear-ended cover (2) with a lock (1) arranged at the rear end. The housing can be connected to a screw or threaded shaft (4), and at (3) a rubber ring is arranged. (5) is an inner casing around the shaft (4). At (8) 504 246 a bracket is arranged and at (9) a nut around the shaft (4). (6) are two (or more) clamping jaws in metal or steel, intended to be clampable against the inner wall of the exhaust pipe in the applied condition.

Låset är så anordnat, att i ett läge koppla samman axeln eller skruven (4) med höljet (huven 2) så att vid dennas vridning i ena riktningen klämbackarna (6) fastklämmas mot avgasrörets innervägg, och i den andra riktningen lossa desamma.The lock is arranged so that in one position the shaft or screw (4) is connected to the housing (hood 2) so that when it is turned in one direction the clamping jaws (6) are clamped against the inner wall of the exhaust pipe, and in the other direction loosen them.

I ett annat låsläge lossas axeln/skruven (4) från höljet (2) och ingenting händer när denna vrides runt. Är då klämbackarna låsta mot innerväggen och stöldskyddet sålunda är i spärrläge, kan man ej taga bort stöldskyddet från avgasröret, och motorn kan ej startas eftersom avgas- vägen då är spärrad, bl. a. av gummiringen (3).In another locking position, the shaft / screw (4) is loosened from the housing (2) and nothing happens when it is turned around. If the clamping jaws are then locked to the inner wall and the anti-theft device is thus in the locked position, the anti-theft device can not be removed from the exhaust pipe, and the engine cannot be started because the exhaust path is then blocked, e.g. a. of the rubber ring (3).

Höljet (2) är i sig självt slutet bakåt, ev. av låset, och spärrandet av avgasvägen spärras även (eller enbart) av gummihöljet (3).The housing (2) is in itself closed backwards, ev. of the lock, and the blocking of the exhaust path is also blocked (or only) by the rubber housing (3).

Stöldskyddet är lätt att applicera och borttaga för nyckelinnehavaren, och p.g.a. avståndet in till klämbackarna blir låset svårforcerat. Avståndet höljets (2) bakände till klämbackarna (6) är väsentligt större än avgasrörets (10) diameter, lämpligen minst dubbla avståndet. Ytterhöljet (2) kan vara utförd i metall eller stål eller också i plast.The theft protection is easy to apply and remove for the key holder, and p.g.a. the distance into the clamping jaws, the lock becomes difficult to force. The distance between the rear end of the housing (2) and the clamping jaws (6) is substantially greater than the diameter of the exhaust pipe (10), preferably at least double the distance. The outer casing (2) can be made of metal or steel or also of plastic.

Anordningen enligt ovan kan varieras på mångahanda sätt inom ramen för nedanstående patentkrav.The device as above can be varied in many ways within the scope of the following claims.

Claims

504 246 4 BÆIEEïKBAL

1. Anti-theft protection for cars and other internal combustion engine vehicles, in which a lockable stop device is inserted in the engine exhaust pipe, characterized in that this protection consists of a rear-mounted housing (2), intended to be threaded over the rear end of an exhaust pipe (10), which housing is connected to a screw or threaded shaft (4), which in turn is connected to a nut (9), which is connected to clamping jaws (6) for locking against the inner wall of the exhaust pipe (10) resp. loosening from the same, and that in the housing (2) a lock (1) is arranged, intended to connect the screw (4) to the housing (2) resp. loosening of this connection, in which case in the latter case the engine cannot start.

Theft protection according to claim 1, characterized in that the distance from the rear end of the protection at the lock (1) to the clamping jaws (6) is substantially greater than the diameter of the exhaust pipe, suitably more than twice this dimension.

Anti-theft device according to Claims 1 to 2, characterized in that the nut (9) is movable along the screw (4) when its rotation is effected by the housing (2).