WO2005049416A1 - Dispositif de reglage de position pour levier de fonctionnement d'actionneur hydraulique - Google Patents

Dispositif de reglage de position pour levier de fonctionnement d'actionneur hydraulique Download PDF

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Publication number
WO2005049416A1
WO2005049416A1 PCT/IT2003/000758 IT0300758W WO2005049416A1 WO 2005049416 A1 WO2005049416 A1 WO 2005049416A1 IT 0300758 W IT0300758 W IT 0300758W WO 2005049416 A1 WO2005049416 A1 WO 2005049416A1
Authority
WO
WIPO (PCT)
Prior art keywords
adjustment device
lever
spacing slider
main lever
bearing track
Prior art date
Application number
PCT/IT2003/000758
Other languages
English (en)
Inventor
Roberto Lavezzi
Tomasz Grabiec
Original Assignee
Freni Brembo S.P.A
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 Freni Brembo S.P.A filed Critical Freni Brembo S.P.A
Priority to PCT/IT2003/000758 priority Critical patent/WO2005049416A1/fr
Priority to AU2003292533A priority patent/AU2003292533A1/en
Publication of WO2005049416A1 publication Critical patent/WO2005049416A1/fr

Links

Classifications

    • 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
    • B62L3/02—Brake-actuating mechanisms; Arrangements thereof for control by a hand lever
    • B62L3/023—Brake-actuating mechanisms; Arrangements thereof for control by a hand lever acting on fluid pressure systems

Definitions

  • the present invention relates to a position adjustment device for an operation lever of a hydraulic actuator, in particular the pump of the braking system or of the hydraulic clutch of a motor vehicle.
  • a manual control lever which is associated with the handlebars of a motorcycle and which is to operate the pump of the' braking system, and which is referred to hereinafter as the brake lever.
  • the brake lever is positioned at the right-hand end of the handlebars in the vicinity of the hand and steering grip with which the accelerator control is associated.
  • Those known adjustment devices are interposed between a main lever, on which the user acts manually in order to brake, and a regulation lever, which transmits the command from the main lever to the hydraulic actuator.
  • a regulation lever which transmits the command from the main lever to the hydraulic actuator.
  • the regulation lever remains constantly bearing on the thrust members of the hydraulic actuator while the main lever is connected thereto in an adjustable manner.
  • the adjustable connection between the main lever and the regulation lever is obtained by means of a threaded pin.
  • a threaded pin In order to be able to rotate the threaded pin easily, there is a knurled ring nut which projects between the main lever and the regulation lever in such a manner that the user can rotate it and therefore adjust the relative distance.
  • a knurled ring nut which projects between the main lever and the regulation lever in such a manner that the user can rotate it and therefore adjust the relative distance.
  • the adjustable connection between the main lever and the regulation lever is obtained by means of a cam, the surface of which is not continuous but has some discrete positions of stable equilibrium.
  • a cam the surface of which is not continuous but has some discrete positions of stable equilibrium.
  • there is a knurled ring nut which projects between the main lever and the regulation lever in such a manner that the user can rotate it and therefore adjust the relative distance.
  • adjustment devices have the disadvantage of necessarily having to be produced by assembling various mechanical components. In order to obtain those mechanical components it is necessary to carry out machining operations which may be long and complex and which may in their turn require the use of skilled labour. The production of those known adjustment devices is therefore relatively expensive.
  • the problem underlying the present invention is to provide and produce a position adjustment device for an operation lever of a hydraulic actuator, such as, for example, a brake lever of a motorcycle, which device has structural and functional features such as to satisfy the above-mentioned requirements, and, at the same time, to overcome the disadvantages mentioned with reference to the prior art .
  • a position adjustment device for an operation lever of a hydraulic actuator in accordance with claim 1.
  • Figure 1 is an overall perspective view of a first embodiment of the adjustment device according to the invention, applied to a brake lever of a motorcycle;
  • Figure 2 is a perspective view of the device of Figure 1 in which some parts have been sectioned for greater clarity; • • •
  • Figure 3 is a partly sectioned plan view of the device of Figure 1;
  • Figure 3a is a view similar to that of Figure 3 with a different adjustment of the device
  • Figure 4 is an exploded view of the device of Figure 1;
  • Figure 5 is an overall perspective view of a second embodiment of the adjustment device according to the invention;
  • Figure 6 is an exploded view of: the device of Figure 5;
  • Figure 7 is a partly sectioned perspective view of a third embodiment of the adjustment device according to the invention.
  • i indicates a support which, constrained on the handlebars (not shown) of the motorcycle in the vicinity of the hand grip (not shown) , carries the entire unit comprising a brake lever 2 and a hydraulic actuator 3.
  • the support 1 may be produced integrally with part of the hydraulic actuator, for example with a cylinder 33 and with an operating fluid reservoir 34. There may also be space on the support for a hole 10 for mounting a rear-view mirror.
  • the brake' lever represented in the drawings is mounted on the right-hand end of the handlebars of a motorcycle.
  • 30 indicates a brake pump and AA indicates a longitudinal axis of the cylinder 33 which, for the sake of simplicity, is illustrated only in the embodiment of Figure 3 but may similarly be found in the illustrated, embodiments .
  • the axis AA of the cylinder 33 of the brake pump 30 is in this case almost parallel with the axis of the hand grip. It will, however, be clear to the person skilled in the art that the invention may equally be applied to hydraulic actuators having other configurations, in which, for example, the cylinder of the pump has an axis which is inclined or perpendicular relative to the axis of the hand grip.
  • the brake . lever 2 comprises a main lever 20 which is in turn constituted by a grip portion 203 and by a bulge 204. Inside the bulge 204 is a cavity 206 which partially contains a regulation lever 21.
  • a first pin 201 of the main lever 20 and a second pin 211 of the regulation lever 21 coincide, constraining both of the levers on the support 1 at a single point..
  • Another possible choice is to pivot the two levers at different points, thus separating the two pins 201 and 211. It will be clear to the person skilled in the art that it is also possible to pivot directly on the support 1 only one of the two levers, for example the regulation lever 21, and then to pivot the other lever, for example the main lever 20, on the regulation lever 21.
  • the main lever 20 defines a first bearing track, indicated 200, and the regulation lever 21 defines a second bearing track indicated 210.
  • a spacing slider 22 is disposed on the first and second bearing tracks 200 and 210, which are ' not parallel with one another, and bears slidably on both of them.
  • the bearing track 210 is arranged substantially in a direction similar to that in which the grip portion 203 of the main lever 20 extends. This arrangement has been found to be particularly convenient and ; efficient but it is possible, if necessary, to arrange the bearing tracks 200 and 210 in different directions.
  • the first bearing track 200 has a slight medium concavity facing the spacing' slider 22.
  • a notched portion 205 is then arranged on the concavity for the purpose of defining positions of stable equilibrium for the spacing slider 22 which, in the region in which it bears on the track 200, is in turn shaped with a notched portion 225 which has at least one tooth and which complements the notched portion 205.
  • a push-button 220 is connected to the spacing slider 22.
  • a stepped portion 216 on the regulation lever 21 and the resilient behaviour of the structure of the push-button 220 permit the definition, also in relation to the second bearing track 210, of positions of stable equilibrium for the • spacing slider 22, which positions correspond to those defined by the notched portion 205.
  • 202 and 212 indicate seats which are formed in the body of the main lever 20 and of the regulation lever 21, respectively, and which are to accommodate a preloaded helical compression spring 221.
  • the spring 221 abuts the levers in order to ensure ' contact between the first bearing track 200 and the slider 22 and between the latter and the second bearing track 210 in any state, including the resting state.
  • the helical spring 221 could be replaced by other resilient means capable of maintaining contact between the bearing tracks and the 'spacing slider; it would be possible to adopt, for example, a torsion spring placed around the first pin 201 of the main lever, or a preloaded traction spring placed between the bearing tracks 200 and 210, or any other technical equivalent.
  • the regulation lever 21 has a thrust portion 217 which acts in a manner known per se on a push rod 31 provided with hemispherical ends.
  • the push rod 31 acts on a piston 32 of the pump of the hydraulic system.
  • a spring Arranged inside the pump is a spring which ensures the return of the piston 32 and, in the resting position, contact between the piston 32 and the push rod 31 and between the latter and the thrust portion ' 217 of the regulation lever 21.
  • a spring Arranged inside the pump is a spring which ensures the return of the piston 32 and, in the resting position, contact between the piston 32 and the push rod 31 and between the latter and the thrust portion ' 217 of the regulation lever 21.
  • the return of the piston 32 and the contact between the components which are clearly necessary for the correct functioning of the hydraulic actuator, to be obtained by other known solutions.
  • the user From an operative ' point of view, if the user wishes to adjust the position of the brake lever relative to the hand grip, he first pushes the main lever 20, moving it away from the hand grip (arrow B in Figure 3a) . and then acts on the push-button 220, pushing it in the direction in which the bearing track 210 extends (arrow C in Figure 3a) .
  • the various embodiments represented and described are combined in the same inventive idea and differ from one another only, on the basis of secondary structural details, such as the form of the notched portion 205, the form of the spacing slider 22 or the connection of the push-button 220 to the spacing slider.
  • the embodiment represented in Figures 5 and 6 differs from the others because the push-button 22 therein is not in the plane defined by the first bearing track 200 and by the second bearing track 210.
  • the adjustment device according to the invention satisfies the above-mentioned requirements an at the same time avoids the disadvantages referred to in the introductory part of the description.
  • the simplicity of the device in its preferred form illustrated in the drawings will be particularly appreciated.
  • the reduction in the number of mechanical components translates directly into a reduction in * the cost of producing the entire brake lever.
  • the simplicity of those mechanical components does not require that they undergo further machining operations after being produced, for example, by pressing.
  • the device forming the subject-matter of the invention is contained entirely within the cavity 206 formed -inside the main lever 20, so that nothing is exposed outside except the push-button 220 for operating the slider 22. Therefore, this solution on the one hand permits greater protection of the device from dirt and on the other hand , permits substantial elegance and cleanness of form with extremely remarkable advantages in aesthetic terms.
  • a person skilled in the art could introduce numerous modifications, adaptations and substitutions of elements by other functionally equivalent elements to the above-described preferred embodiments of the adjustment device without departing from the scope of the following claims .

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Control Devices (AREA)

Abstract

L'invention concerne un dispositif de réglage permettant de régler la position angulaire d'un levier de fonctionnement d'actionneur hydraulique. Ledit dispositif comprend un support, un levier principal et un levier de régulation connectés au support et un coulisseau d'espacement. Le levier principal et le levier de régulation définissent des chemins de contact permettant au coulisseau d'espacement de se déplacer sur ceux-ci et de maintenir un contact constant avec ceux-ci. Le chemins d'espacement sur sont pas parallèles les uns aux autres.
PCT/IT2003/000758 2003-11-20 2003-11-20 Dispositif de reglage de position pour levier de fonctionnement d'actionneur hydraulique WO2005049416A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/IT2003/000758 WO2005049416A1 (fr) 2003-11-20 2003-11-20 Dispositif de reglage de position pour levier de fonctionnement d'actionneur hydraulique
AU2003292533A AU2003292533A1 (en) 2003-11-20 2003-11-20 Position adjustment device for an operation lever of an hydraulic actuator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2003/000758 WO2005049416A1 (fr) 2003-11-20 2003-11-20 Dispositif de reglage de position pour levier de fonctionnement d'actionneur hydraulique

Publications (1)

Publication Number Publication Date
WO2005049416A1 true WO2005049416A1 (fr) 2005-06-02

Family

ID=34611208

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2003/000758 WO2005049416A1 (fr) 2003-11-20 2003-11-20 Dispositif de reglage de position pour levier de fonctionnement d'actionneur hydraulique

Country Status (2)

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AU (1) AU2003292533A1 (fr)
WO (1) WO2005049416A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007026383A1 (fr) * 2005-08-30 2007-03-08 Freni Brembo S.P.A. Ensemble de levier pour motocycle
DE102007040364A1 (de) * 2007-08-24 2009-03-12 Gustav Magenwirth Gmbh & Co. Kg Betätigungsarmatur
EP1864903A3 (fr) * 2006-06-09 2009-03-25 Shimano Inc. Dispositif d'actionnement hydraulique de frein pour bicyclette
EP2096025A3 (fr) * 2008-02-29 2010-04-14 Sunstar Engineering Pte. Ltd Dispositif de freinage
US20110271789A1 (en) * 2008-12-24 2011-11-10 Freni Brembo S.P.A. Actuating Device with Collapsible Lever
DE102010035492A1 (de) * 2010-08-26 2012-03-01 Gustav Magenwirth Gmbh & Co. Kg Hydraulische Scheibenbremse
DE102010040045A1 (de) * 2010-08-31 2012-03-01 Gustav Magenwirth Gmbh & Co. Kg Geberarmatur und hydraulische Scheibenbremse
CN113147990A (zh) * 2021-04-30 2021-07-23 建德市五星车业有限公司 一种碟刹开关
US11097804B2 (en) 2016-11-04 2021-08-24 Freni Brembo S.P.A. Lever device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4779482A (en) * 1985-12-06 1988-10-25 Honda Giken Kogyo Kabushiki Kaisha Adjustable manipulating lever for motorcycle
US4840082A (en) * 1987-06-05 1989-06-20 Nissin Kogyo Kabushiki Kaisha Lever system for vehicles
EP1123861A2 (fr) * 1999-12-16 2001-08-16 Nissin Kogyo Co., Ltd. Levier de commande pour véhicule avec guidon
EP1160152A1 (fr) * 2000-06-02 2001-12-05 Freni Brembo S.p.A. Dispositif pour ajuster la position du levier de fonctionnement d'un vérin hydraulique

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4779482A (en) * 1985-12-06 1988-10-25 Honda Giken Kogyo Kabushiki Kaisha Adjustable manipulating lever for motorcycle
US4840082A (en) * 1987-06-05 1989-06-20 Nissin Kogyo Kabushiki Kaisha Lever system for vehicles
EP1123861A2 (fr) * 1999-12-16 2001-08-16 Nissin Kogyo Co., Ltd. Levier de commande pour véhicule avec guidon
EP1160152A1 (fr) * 2000-06-02 2001-12-05 Freni Brembo S.p.A. Dispositif pour ajuster la position du levier de fonctionnement d'un vérin hydraulique

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8061234B2 (en) 2005-08-30 2011-11-22 Roberto Lavezzi Adjustment device for motorcycle master cylinders
WO2007026383A1 (fr) * 2005-08-30 2007-03-08 Freni Brembo S.P.A. Ensemble de levier pour motocycle
EP1864903A3 (fr) * 2006-06-09 2009-03-25 Shimano Inc. Dispositif d'actionnement hydraulique de frein pour bicyclette
US8408090B2 (en) 2007-08-24 2013-04-02 Gustav Magenwirth Gmbh & Co. Kg Actuator mounting
DE102007040364A1 (de) * 2007-08-24 2009-03-12 Gustav Magenwirth Gmbh & Co. Kg Betätigungsarmatur
EP2028094A3 (fr) * 2007-08-24 2009-10-21 GUSTAV MAGENWIRTH GmbH & Co. KG Armature d'actionnement
DE102007040364B4 (de) 2007-08-24 2022-02-24 Gustav Magenwirth Gmbh & Co. Kg Betätigungsarmatur
US8631721B2 (en) 2007-08-24 2014-01-21 Gustav Magenwirth Gmbh & Co. Kg Actuator mounting
EP2096025A3 (fr) * 2008-02-29 2010-04-14 Sunstar Engineering Pte. Ltd Dispositif de freinage
US8281903B2 (en) 2008-02-29 2012-10-09 Sunstar Engineering Pte. Ltd. Breaking device
US9815440B2 (en) * 2008-12-24 2017-11-14 Freni Brembo S.P.A. Actuating device with collapsible lever
US20110271789A1 (en) * 2008-12-24 2011-11-10 Freni Brembo S.P.A. Actuating Device with Collapsible Lever
DE102010035492A1 (de) * 2010-08-26 2012-03-01 Gustav Magenwirth Gmbh & Co. Kg Hydraulische Scheibenbremse
DE102010040045A1 (de) * 2010-08-31 2012-03-01 Gustav Magenwirth Gmbh & Co. Kg Geberarmatur und hydraulische Scheibenbremse
US11097804B2 (en) 2016-11-04 2021-08-24 Freni Brembo S.P.A. Lever device
CN113147990A (zh) * 2021-04-30 2021-07-23 建德市五星车业有限公司 一种碟刹开关

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