ITBZ20110017A1 - BRAKING SYSTEM DELAYED ON THE FRONT BRAKE OF TWO-WHEEL VEHICLES - Google Patents
BRAKING SYSTEM DELAYED ON THE FRONT BRAKE OF TWO-WHEEL VEHICLES Download PDFInfo
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- ITBZ20110017A1 ITBZ20110017A1 IT000017A ITBZ20110017A ITBZ20110017A1 IT BZ20110017 A1 ITBZ20110017 A1 IT BZ20110017A1 IT 000017 A IT000017 A IT 000017A IT BZ20110017 A ITBZ20110017 A IT BZ20110017A IT BZ20110017 A1 ITBZ20110017 A1 IT BZ20110017A1
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- lever
- front brake
- brake
- braking system
- hand lever
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- 230000003111 delayed effect Effects 0.000 title description 7
- 230000005489 elastic deformation Effects 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 210000000056 organ Anatomy 0.000 claims description 2
- 230000006835 compression Effects 0.000 description 9
- 238000007906 compression Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 2
- 210000004072 lung Anatomy 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62L—BRAKES SPECIALLY ADAPTED FOR CYCLES
- B62L3/00—Brake-actuating mechanisms; Arrangements thereof
- B62L3/08—Mechanisms specially adapted for braking more than one wheel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
- B60T11/04—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting mechanically
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
- B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
- B60T11/102—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic in combination with mechanical elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/02—Brake-action initiating means for personal initiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/02—Brake-action initiating means for personal initiation
- B60T7/04—Brake-action initiating means for personal initiation foot actuated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/02—Brake-action initiating means for personal initiation
- B60T7/04—Brake-action initiating means for personal initiation foot actuated
- B60T7/06—Disposition of pedal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/02—Brake-action initiating means for personal initiation
- B60T7/08—Brake-action initiating means for personal initiation hand actuated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/02—Brake-action initiating means for personal initiation
- B60T7/08—Brake-action initiating means for personal initiation hand actuated
- B60T7/10—Disposition of hand control
- B60T7/101—Disposition of hand control by means of a pull rod
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/02—Brake-action initiating means for personal initiation
- B60T7/08—Brake-action initiating means for personal initiation hand actuated
- B60T7/10—Disposition of hand control
- B60T7/102—Disposition of hand control by means of a tilting lever
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/17—Using electrical or electronic regulation means to control braking
- B60T8/1755—Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve
- B60T8/17555—Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve specially adapted for enhancing driver or passenger comfort, e.g. soft intervention or pre-actuation strategies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/26—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force characterised by producing differential braking between front and rear wheels
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Regulating Braking Force (AREA)
Description
Descrizione dell’invenzione industriale dal titolo: Description of the industrial invention entitled:
SISTEMA DI FRENATURA AD AZIONE RITARDATA SUL FRENO ANTERIORE DI VEICOLI A DUE RUOTE DELAYED-ACTION BRAKING SYSTEM ON THE FRONT BRAKE OF TWO-WHEEL VEHICLES
DESCRIZIONE DESCRIPTION
È noto che per i veicoli a due ruote, come biciclette, motocicli e moto, esiste l'inconveniente che, in particolare in situazioni di panico, agendo istintivamente sulla leva del freno della ruota anteriore essa si blocca o svolgendo un’azione frenante eccessiva, comporta il ribaltamento in avanti oppure lo sbandamento eccessivo, del veicolo assieme al guidatore ed all’eventuale passeggero. It is known that for two-wheeled vehicles, such as bicycles, motorcycles and motorcycles, there is the disadvantage that, particularly in panic situations, by instinctively acting on the brake lever of the front wheel it locks up or performs an excessive braking action, involves tipping forward or excessive skidding of the vehicle together with the driver and any passenger.
Soltanto in seguito ad una certa pratica il guidatore sa azionare, in base alla velocità, al tipo ed alle condizioni del manto stradale, alla pendenza della strada, al peso del veicolo con o senza passeggero, ecc., la leva del freno a mano per la ruota anteriore evitando il ribaltamento o lo sbandamento del veicolo. Purtroppo però succede, in situazioni di panico, in caso di situazioni imprevedibili e di sorpresa, che anche un guidatore esperto, per reazione istintiva incontrollata, azioni eccessivamente il freno anteriore oppure lo azioni senza dare precedenza temporale e di intensità alla frenatura della ruota posteriore la quale anche in caso di blocco totale non comporta il ribaltamento. Only after a certain practice does the driver know how to operate the handbrake lever for the front wheel avoiding the overturning or skidding of the vehicle. Unfortunately, however, it happens, in panic situations, in the event of unpredictable and surprising situations, that even an experienced driver, due to an uncontrolled instinctive reaction, excessively activates the front brake or operates it without giving priority to the time and intensity of the rear wheel braking. which, even in the event of a total block, does not involve overturning.
È nota l’applicazione del sistema di frenatura ABS anche su moto allo scopo di evitare gli inconvenienti sopra descritti, ottimizzando l'azione frenante senza rischio del blocco delle ruote. Questo sistema applicato ormai su tutte le autovetture viene applicato soltanto su motociclette di grossa cilindrata, dotate di un certo confort e piuttosto costose. The application of the ABS braking system is also known to motorcycles in order to avoid the problems described above, optimizing the braking action without the risk of the wheels locking. This system, now applied to all cars, is applied only to large displacement motorcycles, equipped with a certain comfort and rather expensive.
L'invenzione si pone il compito di realizzare un sistema di frenatura per veicoli a due ruote come biciclette, motocicli e moto, applicabile ai sistemi facenti uso di cavi flessibili scorrevoli all’interno di guaine, di tiranti rigidi con dispositivi meccanici di rinvio o di trasmissione idraulica con cilindro maestro, serbatoio di alimentazione, tubazioni e cilindri di comando, atto ad ottenere un'azione ritardata del freno della ruota anteriore rispetto alla ruota posteriore con dissipazione di eventuali picchi della forza di azionamento. The invention has the task of realizing a braking system for two-wheeled vehicles such as bicycles, motorcycles and motorcycles, applicable to systems making use of flexible cables sliding inside sheaths, rigid tie rods with mechanical transmission devices or hydraulic transmission with master cylinder, supply tank, pipes and control cylinders, designed to obtain a delayed action of the brake of the front wheel with respect to the rear wheel with dissipation of any peaks in the driving force.
Per adempiere a questo compito l’invenzione propone di prevedere che l’organo di azionamento del freno della ruota posteriore, che può essere una leva a pedale o una leva a mano, agisca su un organo di azionamento del freno per la ruota anteriore con l’interposizione di un elemento a deformazione elastica, per esempio una molla a trazione o a compressione, ottenendo in caso di un azionamento brusco ed intenso dell'organo di azionamento per il freno posteriore un azionamento del freno anteriore, ritardato per dissipazione dei picchi della forza di azionamento per effetto della deformazione progressiva dell’elemento elastico interposto. In questo modo si ottiene l’azionamento del freno per la ruota posteriore in modo tradizionale “diretto” mentre l’azionamento del freno della ruota anteriore avviene in modo ritardato e graduale in base al caricamento progressivo dell’elemento a deformazione elastico che trasmette il moto di azionamento dall’organo di azionamento “principale” del freno posteriore, all’organo di azionamento “secondario" per l’azionamento del freno anteriore. È possibile ottenere lo stesso effetto prevedendo sul cilindro maestro di un impianto a trasmissione idraulica noto una uscita con tubetto di collegamento per il cilindro di comando per il freno posteriore mentre l’uscita con tubetto di collegamento per il cilindro di azionamento del freno anteriore è provvisto di polmone idraulico atto a ritardare e dissipare l'azione della pressione prodotta in caso di azionamento troppo brusco del pistone del cilindro maestro. To accomplish this task, the invention proposes to provide that the rear wheel brake actuation member, which may be a foot lever or a hand lever, acts on a brake actuation member for the front wheel with the '' interposition of an elastic deformation element, for example a traction or compression spring, obtaining in the event of an abrupt and intense actuation of the actuating element for the rear brake, an actuation of the front brake, delayed by dissipation of the peaks of the force of actuation due to the progressive deformation of the interposed elastic element. In this way, the rear wheel brake is actuated in a traditional "direct" way, while the front wheel brake is actuated in a delayed and gradual manner based on the progressive loading of the elastic deformation element that transmits the motion. from the "main" actuation member of the rear brake, to the "secondary" actuation member for actuating the front brake. It is possible to obtain the same effect by providing on the master cylinder of a known hydraulic transmission system an output with connection tube for the control cylinder for the rear brake, while the output with connection tube for the front brake actuating cylinder is equipped with a hydraulic buffer designed to delay and dissipate the action of the pressure produced in case of too sudden activation of the master cylinder piston.
L'invenzione comprende inoltre l’impiego di un dispositivo dissipatore regolabile a molla, applicabile in cago di comando a cavo flessibile fra la guaina di detto cavo ed un supporto sporgente dal manubrio o dal telaio del veicolo oppure al tirante per l'azionamento meccanico del freno anteriore allo scopo di ritardare e dissipare la trasmissione della forza dovuta all’azionamento della leva a mano per il freno della ruota anteriore. Questo dispositivo consiste essenzialmente in un elemento simile ai tenditori noti per freni con azionamento tramite cavo flessibile scorrevole entro guaina, il tenditore è dotato di boccola a bicchiere entro la quale è alloggiata una molla a compressione, contro la quale appoggia l’estremità della guaina. Avvitando o svitando la parte filettata attraversata assialmente dal cavo flessibile su un supporto fisso per esempio sul manubrio in corrispondenza dell’imperniazione della leva a mano per il freno anteriore. The invention furthermore includes the use of an adjustable spring dissipating device, applicable in a control box with a flexible cable between the sheath of said cable and a support protruding from the handlebar or chassis of the vehicle or to the tie rod for mechanical operation of the front brake in order to delay and dissipate the transmission of force due to the operation of the hand lever for the front wheel brake. This device essentially consists of an element similar to known tensioners for brakes with operation by means of a flexible cable sliding inside the sheath, the tensioner is equipped with a cup bushing within which a compression spring is housed, against which the end of the sheath rests. Screwing or unscrewing the threaded part axially crossed by the flexible cable on a fixed support for example on the handlebar at the pivot point of the hand lever for the front brake.
L’invenzione viene spiegata più da vicino in base ad alcuni esempi di esecuzione preferenziali del sistemò di frenatura ad azione ritardata secondo l’invenzione illustrati schematicamente nei disegni allegati i quali hanno scopo puramente esplicativo e non limitativo. The invention is explained more closely on the basis of some examples of preferential execution of the delayed action braking system according to the invention schematically illustrated in the attached drawings which are purely for explanatory and non-limiting purposes.
La Fig. 1 è la vista laterale di un pedale di comando del freno posteriore di una moto azionato direttamente ed agente su una leva azionata con l’interposizione di una molla regolabile a compressione per il comando del freno anteriore. Fig. 1 is the side view of a rear brake control pedal of a motorcycle operated directly and acting on a lever operated with the interposition of an adjustable compression spring for the control of the front brake.
La Fig. 2 è la vista dall'alto dello stesso pedale di comando illustrato in Fig. 1. Fig. 2 is the top view of the same control pedal illustrated in Fig. 1.
La Fig. 3 è la vista laterale di un pedale di comando del freno posteriore di una moto azionato direttamente ed agente su una leva a bilanciere con l'interposizione di una molla regolabile a compressione per il comando del freno anteriore. Fig. 3 is the side view of a rear brake control pedal of a motorcycle operated directly and acting on a rocker lever with the interposition of an adjustable compression spring for controlling the front brake.
La Fig. 4 è la vista dall'alto dello stesso pedale di comando illustrato in Fig. 3. Fig. 4 is the top view of the same control pedal illustrated in Fig. 3.
La Fig. 5 è la vista laterale di un pedale di comando del freno posteriore di una moto provvista di due bracci di azionamento, uno per il freno posteriore e l’altro per agire con l'interposizione di una molla a trazione su un braccio per l’azionamento del freno anteriore. Fig. 5 is the side view of a rear brake control pedal of a motorcycle equipped with two actuation arms, one for the rear brake and the other to act with the interposition of a tension spring on an arm to actuation of the front brake.
La Fig. 6 è uno schema idraulico semplificato di un cilindro maestro con pistone per freni a comando idraulico essendo il cilindro di comando del freno posteriore collegato direttamente mentre il cilindro di comando per il freno anteriore è collegato con l’interposizione di un polmone. Fig. 6 is a simplified hydraulic diagram of a master cylinder with hydraulically operated brake piston since the rear brake control cylinder is directly connected while the front brake control cylinder is connected with the interposition of a lung.
La Fig. 7 è la sezione longitudinale per un dispositivo elastico per la regolazione e la dissipazione della forza trasmessa per agire sul freno anteriore. Fig. 7 is the longitudinal section for an elastic device for adjusting and dissipating the force transmitted to act on the front brake.
La Fig. 8 è la vista laterale di una leva a mano per freno anteriore di una bicicletta agente su una seconda leva munita di dispositivo di regolazione a lobi disponibile in tre posizioni diverse per varie intensità di dissipazione, il dispositivo agisce fra la guaina di un cavo flessibile ed un supporto fisso, con l’interposizione di una molla a compressione permettendo la regolazione della dissipazione della forza trasmessa per agire sul freno anteriore avvitando l'elemento più o meno sul supporto fisso. Fig. 8 is the side view of a hand lever for the front brake of a bicycle acting on a second lever equipped with a lobe adjustment device available in three different positions for various intensity of dissipation, the device acts between the sheath of a flexible cable and a fixed support, with the interposition of a compression spring allowing the adjustment of the dissipation of the transmitted force to act on the front brake by screwing the element more or less on the fixed support.
Agendo F con il piede sulla leva a pedale 1 (Figg. 1, 2) per l’azionamento diretto P del freno posteriore tramite braccio 1x e cavo flessibile o tirante 1y, si provoca, in seguito alla compressione di una molla a pressione 2c, l’azionamento Fa di una leva 2 imperniata assieme alla leva a pedale 1 su un perno 3 la quale leva, tramite braccio 2x e cavo flessibile o tirante 2y, agisce A sul freno anteriore. Detta molla a compressione 2c è alloggiata in modo regolabile 2b all'interno di un bicchiere 2a previsto all'estremità della leva 2 per l’azionamento A del freno anteriore. L’intensità di azionamento A agente sul freno anteriore ottenuta tramite la leva 2 dipende dall’azione F sulla leva a pedale 1 e dalle caratteristiche elastiche della molla a pressione 2c ed eventualmente dalla regolazione di questa, essa sarà comunque sempre minore dell’intensità di azionamento P del freno posteriore ottenuta in modo noto e diretto con l’azionamento F della leva a pedale 1. Acting F with the foot on the pedal lever 1 (Figs. 1, 2) for the direct actuation P of the rear brake by means of arm 1x and flexible cable or tie rod 1y, following the compression of a pressure spring 2c, is caused the actuation Fa of a lever 2 hinged together with the pedal lever 1 on a pin 3 which lever, by means of an arm 2x and a flexible cable or tie rod 2y, acts A on the front brake. Said compression spring 2c is adjustably housed 2b inside a cup 2a provided at the end of the lever 2 for the actuation A of the front brake. The intensity of actuation A acting on the front brake obtained by means of the lever 2 depends on the action F on the pedal lever 1 and on the elastic characteristics of the pressure spring 2c and possibly on its adjustment, it will in any case always be less than the intensity of actuation P of the rear brake obtained in a known and direct way with actuation F of the pedal lever 1.
Lo stesso effetto di azione ritardata con dissipazione della forza A agente sul freno anteriore rispetto alla forza P agente sul freno posteriore, si ottiene sostituendo la seconda leva 2 con braccio 2x indicato nelle Figg. 1 e 2, con una leva a bilanciere con bracci 2p, 2q (Figg. 3, 4). In questo caso un braccio 1p solidale con la leva a pedale 1 è collegato con l’interposizione di una molla a pressione 2c con il braccio 2p del bilanciere imperniato sullo stesso perno 3 assieme alla leva a pedale 1. Detta molla 2c è alloggiata regolabile 2b in un bicchiere 2a previsto all'estremità del braccio 2p; il secondo braccio 2q del bilanciere invece è collegato con il cavo o il tirante 2y agente A sul freno anteriore. The same delayed action effect with dissipation of the force A acting on the front brake with respect to the force P acting on the rear brake, is obtained by replacing the second lever 2 with the 2x arm indicated in Figs. 1 and 2, with a rocker lever with 2p, 2q arms (Figs. 3, 4). In this case an arm 1p integral with the pedal lever 1 is connected with the interposition of a pressure spring 2c with the arm 2p of the rocker arm hinged on the same pin 3 together with the pedal lever 1. Said spring 2c is housed in an adjustable 2b in a socket 2a provided at the end of the arm 2p; the second arm 2q of the rocker arm, on the other hand, is connected to the cable or the tie rod 2y acting A on the front brake.
Naturalmente è possibile ottenere la stessa azione ritardata anche con l'impiego di una molla a trazione 2z (Fig. 5) in questo caso la leva a pedale 1 è provvista di un braccio 1x per agire P tramite cavo o tirante 1y sul freno posteriore e di un secondo braccio 1s agente tramite molla a trazione 2z su un braccio 2r imperniato assieme alla leva a pedale 1 sullo stesso perno 3, detto braccio azionato Fa agisce A tramite cavo o tirante 2y sul freno anteriore. Naturally it is possible to obtain the same retarded action also with the use of a tension spring 2z (Fig. 5) in this case the pedal lever 1 is provided with a 1x arm to act P by means of a cable or tie rod 1y on the rear brake and of a second arm 1s acting by means of a tension spring 2z on an arm 2r pivoted together with the pedal lever 1 on the same pin 3, said actuated arm Fa acts A by means of a cable or tie rod 2y on the front brake.
Le molle 2c, 2z possono essere sostituite da altri elementi a deformazione elastica come per esempio elementi in gomma o molle pneumatiche. L’azione A, P sul freno posteriore e/o anteriore secondo l’invenzione può essere trasmessa in modo noto meccanico o idraulico agli organi agenti sui freni a ceppi o a disco. The springs 2c, 2z can be replaced by other elements with elastic deformation such as for example rubber elements or pneumatic springs. The action A, P on the rear and / or front brake according to the invention can be transmitted in a known mechanical or hydraulic way to the organs acting on the shoe or disc brakes.
In caso di freni a comando idraulico secondo l'invenzione (Fig. 6) l’azione A ritardata e dissipata sul freno anteriore rispetto all’azione diretta P su quello posteriore, può essere ottenuta prevedendo nella condotta idraulica 1 a di collegamento del cilindro maestro 10 con il cilindro di comando del freno anteriore, un polmone 1 1 munito di diaframma e cuscino d’aria. Agendo F tramite pedale sul pistone 10a del cilindro maestro 10, la pressione prodotta nel cilindro 10 è trasmessa tramite condotta 10p direttamente al cilindro di comando del freno posteriore mentre la stessa pressione è trasmessa tramite condotta 10b al freno anteriore con interposizione del polmone 11 il quale assorbe almeno parzialmente i picchi di pressione in caso di azionamento brusco dissipando successivamente le variazioni di pressione. In the case of hydraulically controlled brakes according to the invention (Fig. 6), the delayed and dissipated action A on the front brake with respect to the direct action P on the rear one, can be obtained by providing in the hydraulic pipe 1 a for connecting the master cylinder 10 with the front brake control cylinder, a lung 11 equipped with a diaphragm and air cushion. Acting F by means of a pedal on the piston 10a of the master cylinder 10, the pressure produced in the cylinder 10 is transmitted through the pipe 10p directly to the control cylinder of the rear brake, while the same pressure is transmitted through the pipe 10b to the front brake with the interposition of the buffer 11 which it at least partially absorbs pressure peaks in case of abrupt actuation, subsequently dissipating pressure variations.
L’invenzione comprende inoltre la possibilità di regolare la dissipazione della forza agente A sul freno anteriore prevedendo fra la guaina 8 ed un supporto fisso 4 provvisto di foro filettato un dispositivo dissipatore 5 avente forma a bicchiere con parte filettata 5a avvitata sul supporto 4. Nella boccola a bicchiere 5 è alloggiata una molla a compressione 6 o altro elemento deformabile elasticamente a compressione contro il quale appoggia l’estremità della guaina 8 provvista di rondella di appoggio 7. La guaina 8, la rondella di appoggio 7, la molla 6 e la parte filettata 5a sono coassiali fra di loro ed attraversate dal cavo flessibile 2y per l'azionamento A del freno anteriore, in questo modo eventuali picchi o variazioni brusche dell’azionamento A eseguito tramite leva a pedale 1 o leva a mano 12m vengono dissipati dalla molla 6. Detto dispositivo dissipatore 5 è applicabile sul supporto 11a sporgente dal manubrio 11 per l’imperniazione 1 1 b della leva a mano 12m per l’azionamento A indiretto del freno anteriore di biciclette o motocicli. The invention also includes the possibility of regulating the dissipation of the force acting A on the front brake by providing between the sheath 8 and a fixed support 4 provided with a threaded hole a dissipating device 5 having a cup shape with a threaded part 5a screwed onto the support 4. In socket 5 a compression spring 6 or other elastically deformable compression element rests against which the end of the sheath 8 provided with a support washer 7 rests. The sheath 8, the support washer 7, the spring 6 and the threaded part 5a are coaxial to each other and crossed by the flexible cable 2y for the actuation A of the front brake, in this way any sudden peaks or variations of the actuation A performed by foot lever 1 or hand lever 12m are dissipated by the spring 6. Said dissipating device 5 can be applied on the support 11a protruding from the handlebar 11 for the pivoting 1 1 b of the hand lever 12m for operating to A indirect of the front brake of bicycles or motorcycles.
Secondo un ulteriore sviluppo dell’idea inventiva la leva a mano 12m per il freno anteriore (Fig. 8) agisce eventualmente direttamente per azionare il freno posteriore (non illustrato!), mentre per l’azionamento A del freno anteriore agisce su una seconda leva 13 imperniata 11b assieme alla leva a mano 12m. L’estremità libera della leva 13 appoggiata e scorrevole all'interno della leva 12m, è dotata di perno 13b sul quale è posizionabile in posizioni diverse un elemento a lobi 14 con scanalatura ramificata 14a atta a variare la distanza fra l’estremità della leva 13 e la superficie interna di appoggio e scorrimento della leva 12m, rendendo possibile la regolazione in funzione a diverse condizioni del manto stradale (asfalto, sterrato) o diverse condizioni di guida (sport, turismo). Azionando 12a la leva a mano 12m viene azionata 13a la leva 13 la quale aziona A il cavo flessibile 2y per il freno anteriore passante per la guaina 8, la rondella di appoggio 7, la molla 7e la parte filettata 5a del dispositivo dissipatore 5 avvitato sul supporto 11a sporgente dal manubrio 11. La regolazione della dissipazione effettuata dalla molla 6 può essere ottenuta avvitando o svitando la parte filettata 5a sul supporto fisso 11a e/o variando la posizione dell’elemento 14 a lobi vincolato all’estremità della leva 13. According to a further development of the inventive idea, the hand lever 12m for the front brake (Fig. 8) possibly acts directly to actuate the rear brake (not shown!), While for actuation A of the front brake it acts on a second lever 13 hinged 11b together with the hand lever 12m. The free end of the lever 13 resting and sliding inside the lever 12m, is equipped with a pin 13b on which a lobe element 14 with a branched groove 14a can be positioned in different positions to vary the distance between the end of the lever 13 and the internal support and sliding surface of the 12m lever, making it possible to adjust it according to different conditions of the road surface (asphalt, dirt) or different driving conditions (sport, tourism). By operating the hand lever 12m 12a, the lever 13 is actuated 13a which activates A the flexible cable 2y for the front brake passing through the sheath 8, the support washer 7, the spring 7 and the threaded part 5a of the dissipating device 5 screwed onto the support 11a protruding from the handlebar 11. The adjustment of the dissipation carried out by the spring 6 can be obtained by screwing or unscrewing the threaded part 5a on the fixed support 11a and / or by varying the position of the lobe element 14 constrained to the end of the lever 13.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT000017A ITBZ20110017A1 (en) | 2011-05-03 | 2011-05-03 | BRAKING SYSTEM DELAYED ON THE FRONT BRAKE OF TWO-WHEEL VEHICLES |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT000017A ITBZ20110017A1 (en) | 2011-05-03 | 2011-05-03 | BRAKING SYSTEM DELAYED ON THE FRONT BRAKE OF TWO-WHEEL VEHICLES |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ITBZ20110017A1 true ITBZ20110017A1 (en) | 2012-11-04 |
Family
ID=44554597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT000017A ITBZ20110017A1 (en) | 2011-05-03 | 2011-05-03 | BRAKING SYSTEM DELAYED ON THE FRONT BRAKE OF TWO-WHEEL VEHICLES |
Country Status (1)
| Country | Link |
|---|---|
| IT (1) | ITBZ20110017A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3774511B1 (en) * | 2018-03-26 | 2023-12-20 | TVS Motor Company Limited | A braking system for a motor vehicle |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR805361A (en) * | 1935-02-27 | 1936-11-18 | Bendix Aviat Corp | Vehicle brake enhancements |
| FR813069A (en) * | 1935-10-18 | 1937-05-25 | Bendix Aviat Corp | Improvements to braking mechanisms |
| FR821057A (en) * | 1936-04-25 | 1937-11-26 | Bendix Aviat Corp | Improvements to vehicle braking mechanisms |
| FR1302473A (en) * | 1961-06-14 | 1962-08-31 | Renault | Brake timer for vehicles |
| FR1333410A (en) * | 1961-09-12 | 1963-07-26 | Girling Ltd | Selective effect control valve, in particular for vehicle braking systems |
| GB2042107A (en) * | 1978-11-02 | 1980-09-17 | Hardcastle K | Improvements in motor cycle braking systems |
| FR2489234A1 (en) * | 1980-08-29 | 1982-03-05 | Renault | Brake force equaliser for bicycle - has lever to alter braking forces to two brake linkages with sensors to vary moment arm lengths |
| GB2204371A (en) * | 1987-05-04 | 1988-11-09 | Piaggio & C Spa | Braking system for two-wheelers |
| FR2735440A1 (en) * | 1995-06-14 | 1996-12-20 | Honda Motor Co Ltd | Coupling of vehicle front and rear brakes |
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2011
- 2011-05-03 IT IT000017A patent/ITBZ20110017A1/en unknown
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR805361A (en) * | 1935-02-27 | 1936-11-18 | Bendix Aviat Corp | Vehicle brake enhancements |
| FR813069A (en) * | 1935-10-18 | 1937-05-25 | Bendix Aviat Corp | Improvements to braking mechanisms |
| FR821057A (en) * | 1936-04-25 | 1937-11-26 | Bendix Aviat Corp | Improvements to vehicle braking mechanisms |
| FR1302473A (en) * | 1961-06-14 | 1962-08-31 | Renault | Brake timer for vehicles |
| FR1333410A (en) * | 1961-09-12 | 1963-07-26 | Girling Ltd | Selective effect control valve, in particular for vehicle braking systems |
| GB2042107A (en) * | 1978-11-02 | 1980-09-17 | Hardcastle K | Improvements in motor cycle braking systems |
| FR2489234A1 (en) * | 1980-08-29 | 1982-03-05 | Renault | Brake force equaliser for bicycle - has lever to alter braking forces to two brake linkages with sensors to vary moment arm lengths |
| GB2204371A (en) * | 1987-05-04 | 1988-11-09 | Piaggio & C Spa | Braking system for two-wheelers |
| FR2735440A1 (en) * | 1995-06-14 | 1996-12-20 | Honda Motor Co Ltd | Coupling of vehicle front and rear brakes |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3774511B1 (en) * | 2018-03-26 | 2023-12-20 | TVS Motor Company Limited | A braking system for a motor vehicle |
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