WO1994000318A1 - Dispositif a soupape destine au verrouillage d'un circuit de frein hydraulique - Google Patents

Dispositif a soupape destine au verrouillage d'un circuit de frein hydraulique Download PDF

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Publication number
WO1994000318A1
WO1994000318A1 PCT/AU1993/000301 AU9300301W WO9400318A1 WO 1994000318 A1 WO1994000318 A1 WO 1994000318A1 AU 9300301 W AU9300301 W AU 9300301W WO 9400318 A1 WO9400318 A1 WO 9400318A1
Authority
WO
WIPO (PCT)
Prior art keywords
fluid
valve
flow control
locking apparatus
wheel locking
Prior art date
Application number
PCT/AU1993/000301
Other languages
English (en)
Inventor
Rex John Fing
Derek Malcolm RAWLINGS
Original Assignee
Auscan Brake Lock Ltd.
FING, Denis
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Auscan Brake Lock Ltd., FING, Denis filed Critical Auscan Brake Lock Ltd.
Priority to EP93912451A priority Critical patent/EP0697971A4/fr
Priority to AU42990/93A priority patent/AU4299093A/en
Priority to BR9307845A priority patent/BR9307845A/pt
Priority to JP6501878A priority patent/JPH08510704A/ja
Publication of WO1994000318A1 publication Critical patent/WO1994000318A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
    • B60R25/01—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens
    • B60R25/08—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens operating on brakes or brake systems

Definitions

  • This invention relates to vehicle brake locking apparatus.
  • This invention has particular application to locking vehicle brakes for the purposes of preventing theft of the vehicle and it will be described in relation to such application hereinafter. However it should be understood that this invention could be used in other applications such as in earth moving equipment for locking the wheels of the vehicle against rotation for operating purposes.
  • the present invention aims to provide wheel locking apparatus which will overcome at least one of the above disadvantages and which will be reliable and efficient in use.
  • this invention aims to provide wheel locking apparatus associated with a vehicle's fluid actuated brakes.
  • this invention in one aspect resides broadly in wheel locking apparatus including:- fluid flow control apparatus havi" inlet and outlet connections whereby the fluid flow c crol apparatus may be interposed in a fluid line of a vehicle's brake fluid line, the fluid flow control apparatus being operable between a blocking position at which flow therethrough is prevented, and an open position at which fluid therethrough is permitted, and selectively accessible actuating means for actuating the fluid flow control apparatus.
  • the selectively accessible actuating means is a key mechanism.
  • the key operated mechanism may be the vehicle's starter key such that it must be removed from the actuating means prior to starting the vehicle.
  • the key operated mechanism is separate from starter key and is adapted for key insertion and removal at positions which correspond to the blocking position and the open position whereby the keys for both the starter key and the key operated mechanism may be supported on a common key ring.
  • other types of locks may be used such as combination locks.
  • the fluid flow control apparatus may be a conventional fluid valve such as a ball, gate or plunger type valve but preferably the fluid flow control apparatus includes a valve member biased to a closed position against flow in one direction only and corresponding to a fluid flow direction from the wheel brake slave cylinder to the brake actuating means or master cylinder.
  • This arrangement provides a fail safe characteristic in which, in the blocking position, fluid may pass from the brake actuating means to the wheel brake slave cylinder and actuate the brakes, locking the wheel in a locked attitude. Without this feature a driver may be unaware that the flow control apparatus is in its blocking attitude as the brake pedal would feel hard and normal, although no braking effort would be transmitted to the brake assembly.
  • the fluid flow control apparatus includes an upstream valve seat associated with the inlet adapted for connection to the brake actuating means and a valve member biassed for sealing engagement with the valve seat whereby fluid pressure applied to the inlet will lift the valve member from the valve seat thereby permitting fluid to bypass the valve member, while fluid pressure applied to the outlet will force the valve member into sealing engagement with the valve seat thereby preventing fluid flow through the fluid flow control apparatus.
  • This arrangement also enables full pedal pressure to be applied to the brake wheel slave cylinder for locking purposes and for that pressure to be maintained by the locking device. That is the pressure isn't limited to a maximum determined by the biasing means as fluid pressure in the locked line assists engagement of the valve member with the valve seat.
  • the valve body may contain a single outlet and inlet associated with a single valve means such that only one wheel may be locked.
  • separate inlet and outlets may be associated with respective valve means in a common or separate valve bodies to suit attachment in any number of braking circuits in a vehicle such as two, three, four or more.
  • the valve body In the case of a motor vehicle fitted with ABS braking for example it is preferred that the valve body contain four independent valve means associated with respective pairs of inlets and outlets.
  • each valve means includes a valve member rotatable by a shaft associated with drive means interconnected to the selectively accessible actuating means whereby a single action of the selectively accessible actuating means will simultaneously operate all valve members.
  • the valve members are interconnected by a gear train and one or an associated gear of the gear train is provided with a key operated lock which may be rotated through the desired arc for moving the valve members between the blocked position and the open position.
  • each valve member is a ball valve and that each ball valve is provided with a thrust bearing adapted to oppose the hydraulic forces applied thereto such that the ease of movement of the valve means between the locked position and the open position may be maintained, particularly when the ball valves are subject to high hydraulic pressure.
  • this invention resides broadly in a method of immobilising a vehicle comprising:- interposing fluid locking means in a vehicle wheel brake circuit; pressurising the brake circuit, and actuating the fluid locking means so as to maintain fluid braking pressure in the brake circuit.
  • FIG. 1 is a perspective view of a preferred embodiment of the invention
  • FIG. 2 is a typical cross-sectional side view of the embodiment illustrated in FIG. 1;
  • FIG. 3 is a typical cross-sectional plan view of the embodiment illustrated in FIG. 1;
  • FIG. 4 is a plan view of the embodiment of FIG. 1 with the cover removed illustrating the pinion drive mechanism for the four valve assemblies;
  • FIG. 5 is a diagrammatic illustration of a typical installation
  • FIG. 6 illustrates details of the pinion drive mechanisms
  • FIG. 7 is a perspective view of a another embodiment of the invention.
  • FIG. 8 is a perspective view of a another embodiment of the invention.
  • the locking apparatus 10 associated with the present invention is in the form of a valve body 11 having four inlet connections 12 and a corresponding number of outlet connections 13 and a key operated rotary actuator 14 mounted centrally on the body 11.
  • the locking apparatus 10 is adapted to be interposed in the four hydraulic lines 15 from a vehicle's an ABS braking device 16 associated with the foot brake actuated master cylinder 17, to the respective hydraulic brake slave cylinders 18 at each wheel 19 of the vehicle as illustrated diagrammatical in Fig. 5.
  • the inlet connections 12 and the outlet connections 13 are threaded to receive tapered terminal fittings in conventional manner.
  • the key operated rotary actuator 14 is supported centrally of the valve body 11 with a pinion gear 20 driven thereby and also mounted centrally of the valve body 11 and meshing with a further four gears 21 arranged orbitally about the central pinion gear 20.
  • Each gear is o the same size and configuration such rotation of the pinion gear 20 through a quarter turn by the key operated actuator 14 will cause corresponding rotation of the orbital gears 21, each through a quarter turn.
  • Each orbital gear 21 engages with a ball valve assembly 22 supported in a respective chamber 23 in the valve body 11 associated with the outlet connections 13.
  • each valve assembly 22 includes a ball valve member 24 supported within a chamber 23 and provided with a flow passage 25 therethrough which may be aligned with the respective gallery 26 such that fluid may flow between the inlet connections 12 and the respective outlet connections 13.
  • Each ball valve member 24 is spherical and seats on a complementary shaped valve seat 27 such that when the passage 25 is pivoted by rotation of the orbital gears out of register with the galleries 26, flow from the outlet connection 13 to the inlet connection 12 is prevented.
  • Each ball valve member 24 is biased by compression springs 28, and associated cupped washers 29 which bears against the ball valve member 24, into firm engagement with its valve seat 27 formed at the entrance to the respective galleries 26 to provide a high pressure closure of the galleries 26 with respect to the pressure applied in the brake line 30 downstream of the ball valve member 24.
  • pressure applied to the opposite faces of the closed ball valve members 24 from the galleries 26 will force them to move away from their seats 27 against the bias of the springs 28.
  • each ball valve member 24 is rotated by a respective orbital gear 21 driven from the key operated pinion gear 20.
  • the orbital gears 21 are located in a recess 31 in the valve body 11 and each supports a spherical thrust bearing or ball 32 adapted to seat under the top cover 33 so as to bear thereagainst and oppose the hydraulic forces applied through the stem 34 which drivingly interconnects the gears 21 to the ball valve members 24 via interlocking spigot and socket connections 38/39 as illustrated in Fig. 6.
  • the top cover 33 supports the key operated lock 40 which engages with the pinion gear 16 which is rotatable by the appropriate key 41 to simultaneously contra-rotate the orbital gears 21.
  • the lock 40 utilises a barrel-type key which is relative secure against unauthorized operation and which can be engaged and disengaged in both the locked and unlocked positions at ninety degree intervals.
  • the top cover 33 is also provided with apertured lugs 41 whereby it may be secured to a bulkhead or floor of a vehicle.
  • the brake pedal In use, after a vehicle is parked the brake pedal is depressed sufficiently to operatively engage the brakes in a vehicle holding attitude and the brake locking apparatus is key actuated to the locked position. Subsequent release of pressure on the foot pedal will result in release of the pressure in the brake's fluid supply line at the inlet 12 but maintenance of pressure in the lines 30 and thus locking of the wheels 19.
  • the ball valve member 24 will be forced by downstream fluid pressure into firm engagement with the valve seat 27 assisting in prevention of leakage of hydraulic pressure over a period of time and thus maintenance of the braking effort such that the vehicle brakes may be maintained in a locked attitude for a relatively long period.
  • the inlet and outlet connectors 12 and 13 are provided with a different size or form threads such that the valve body cannot be inadvertently installed with the inlets and outlets reversed whereby in a circumstance as described above, a driver upon taking off would be unaware that the brakes were isolated from the braking apparatus as the brake pedal would feel hard and normal, although no braking effort would be transmitted to the brake assemblies and the vehicle consequently would be out of control. This would be a very dangerous situation.
  • the locking apparatus 70 illustrated in Fig. 7 is adapted for a conventional braking circuit having independent front and rear circuits. Accordinrly it is provided with two inlet connections 71 at one side a two outlet connections 72 at the opposite side.
  • a simi . - .ock and pinion drive is utilised as for the above ⁇ _ ⁇ - ribed embodiment.
  • the locking apparatus 8 illustrated in Fig. 8 is formed from a selected number of jcking units 81 having drive shafts 82 extending therethrough adapted to interconnect when the units 81 are stacked one beside the other and through bolted together through common bolting apertures 83.
  • the end unit is provided with rotary actuation means such as the lock 84 such that each may be simultaneously operated by a single locking operation. If desired the rotary actuation means could operate through a bevel gear drive to enable the key to extend upwards and the stack of units 81 to extend horizontally.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Regulating Braking Force (AREA)

Abstract

Un dispositif (10) de verrouillage de roue permettant d'immobiliser un véhicule est décrit. Le dispositif de verrouillage (10) comprend un appareil (22) de régulation de débit de fluide présentant des raccordements d'entrée et de sortie (13) lui permettant d'être intercalé dans un conduit de fluide de frein. L'appareil (22) de régulation de débit peut être déplacé entre une position de blocage empêchant l'écoulement d'un fluide à travers l'appareil, et une position ouverte permettant l'écoulement dudit fluide et qui ne perturbe pas le fonctionnement normal d'un véhicule. L'appareil (22) de régulation de débit est commandé par un élément d'actionnement (40) à clé et peut être verrouillé de façon à être maintenu en une position fermée dans laquelle il ne permet pas l'écoulement de fluide du cylindre secondaire du frein vers le maître-cylindre, de sorte que la roue ne peut plus entrer en rotation.
PCT/AU1993/000301 1992-06-24 1993-06-22 Dispositif a soupape destine au verrouillage d'un circuit de frein hydraulique WO1994000318A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP93912451A EP0697971A4 (fr) 1993-05-21 1993-06-22 Dispositif a soupape destine au verrouillage d'un circuit de frein hydraulique
AU42990/93A AU4299093A (en) 1993-05-21 1993-06-22 Hydraulic brake circuit locking valve device
BR9307845A BR9307845A (pt) 1993-05-21 1993-06-22 Aparelho aperfeiçõado para trancar freios de veiculo
JP6501878A JPH08510704A (ja) 1993-05-21 1993-06-22 改善された車両ブレーキロック装置

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AUPL316992 1992-06-24
AUPL893993 1993-05-21
AUPL8939 1993-05-21

Publications (1)

Publication Number Publication Date
WO1994000318A1 true WO1994000318A1 (fr) 1994-01-06

Family

ID=25644277

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1993/000301 WO1994000318A1 (fr) 1992-06-24 1993-06-22 Dispositif a soupape destine au verrouillage d'un circuit de frein hydraulique

Country Status (1)

Country Link
WO (1) WO1994000318A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994016925A1 (fr) * 1993-01-27 1994-08-04 Mark Wayne Macwilliam Procede antivol et appareil de blocage des freins d'un vehicule

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU4681559A (en) * 1959-03-16 1960-02-11 Borbasi Frank A means for rendering a motor immobile
WO1985004630A1 (fr) * 1984-04-05 1985-10-24 Moio Bruno Dispositif antivol pour vehicules: par neutralisation du circuit electrique et par blocage des freins apres sollicitation
EP0239987A2 (fr) * 1986-04-02 1987-10-07 Yehuda Baruch Dispositif anti-vol pour véhicules
WO1989001885A1 (fr) * 1987-09-04 1989-03-09 Baldwin Holdings Pty Ltd Dispositif antivol
EP0313694A1 (fr) * 1987-10-28 1989-05-03 Michael Irving Elément de commande pour des conduits hydrauliques ou pneumatiques
AU4374289A (en) * 1988-10-31 1990-05-03 Artigas Soares Lockable valve to be placed in hydraulic cct to disable it
EP0371174A1 (fr) * 1987-05-27 1990-06-06 Robert Conway Dispositif antivol pour véhicules automobiles
WO1991006448A1 (fr) * 1989-11-04 1991-05-16 William Phillips Dispositif antivol pour vehicules
WO1991011348A1 (fr) * 1990-01-26 1991-08-08 Tjæreby Elektronik Aps Dispositif utilisable dans le systeme de freins de vehicules a moteur et maitre-cylindre de freins utilisable dans un tel dispositif

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU4681559A (en) * 1959-03-16 1960-02-11 Borbasi Frank A means for rendering a motor immobile
AU1956062A (en) * 1961-07-04 1964-01-09 Charles Witt Glover Donald Hydraulic pressure lock valve
WO1985004630A1 (fr) * 1984-04-05 1985-10-24 Moio Bruno Dispositif antivol pour vehicules: par neutralisation du circuit electrique et par blocage des freins apres sollicitation
EP0239987A2 (fr) * 1986-04-02 1987-10-07 Yehuda Baruch Dispositif anti-vol pour véhicules
EP0371174A1 (fr) * 1987-05-27 1990-06-06 Robert Conway Dispositif antivol pour véhicules automobiles
WO1989001885A1 (fr) * 1987-09-04 1989-03-09 Baldwin Holdings Pty Ltd Dispositif antivol
EP0313694A1 (fr) * 1987-10-28 1989-05-03 Michael Irving Elément de commande pour des conduits hydrauliques ou pneumatiques
AU4374289A (en) * 1988-10-31 1990-05-03 Artigas Soares Lockable valve to be placed in hydraulic cct to disable it
WO1991006448A1 (fr) * 1989-11-04 1991-05-16 William Phillips Dispositif antivol pour vehicules
WO1991011348A1 (fr) * 1990-01-26 1991-08-08 Tjæreby Elektronik Aps Dispositif utilisable dans le systeme de freins de vehicules a moteur et maitre-cylindre de freins utilisable dans un tel dispositif

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP0697971A4 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994016925A1 (fr) * 1993-01-27 1994-08-04 Mark Wayne Macwilliam Procede antivol et appareil de blocage des freins d'un vehicule

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