EP3319869A1 - Accelerator for a motor vehicle with a steering handlebar and motor vehicle comprising said accelerator - Google Patents
Accelerator for a motor vehicle with a steering handlebar and motor vehicle comprising said acceleratorInfo
- Publication number
- EP3319869A1 EP3319869A1 EP16757942.4A EP16757942A EP3319869A1 EP 3319869 A1 EP3319869 A1 EP 3319869A1 EP 16757942 A EP16757942 A EP 16757942A EP 3319869 A1 EP3319869 A1 EP 3319869A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- accelerator
- reaction torque
- steering handlebar
- torque transducer
- end portion
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K23/00—Rider-operated controls specially adapted for cycles, i.e. means for initiating control operations, e.g. levers, grips
- B62K23/02—Rider-operated controls specially adapted for cycles, i.e. means for initiating control operations, e.g. levers, grips hand actuated
- B62K23/04—Twist grips
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K11/00—Motorcycles, engine-assisted cycles or motor scooters with one or two wheels
- B62K11/14—Handlebar constructions, or arrangements of controls thereon, specially adapted thereto
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
Definitions
- the present invention relates to the technical field of motor vehicles and in particular relates to an accelerator for a motor vehicle provided with a steering handlebar and a vehicle comprising said accelerator.
- accelerators for motor vehicles provided with a steering handlebar such as scooters, motorcycles, quads, tricycles, etc.
- Such accelerators normally comprise a knob, called the accelerator knob, rotatably coupled to the steering handlebar to be placed in rotation by the driver in order to control the power delivered by the vehicle engine.
- the accelerator controls the opening of a throttle valve feeding the engine and thus allows the driver to control the engine power delivered.
- Vehicles of the "drive by wire” type have also been proposed in which the accelerator knob is connected via an electromechanical and electronic system to the throttle valve, so that the power delivered by the engine is de facto controlled by an electrical signal bearing information related to the angle of rotation of the knob with respect to a neutral rest position, wherein with the motor on, this is controlled by an electronic control unit to deliver a positive but minimum power or even null in a system of the start & stop type, in the latter case the engine being off when the knob is in the neutral, rest position.
- a general object of the present invention is to provide an accelerator for a motor vehicle comprising a steering handlebar which resolves entirely or at least in part the drawbacks discussed above with reference to the accelerators of the prior art.
- the present invention also relates to a vehicle as defined in claim 16.
- Fig. 1 shows a plan view in front elevation of an example of a vehicle comprising a steering handlebar
- FIG. 2 shows a schematic plan view in lateral cross- section of a first embodiment of an accelerator coupled to the steering handlebar of the vehicle in figure 1 ;
- FIG. 3 shows a schematic plan view of the accelerator in figure 2 in which the accelerator is coupled to the steering handlebar of the vehicle in figure 1;
- Fig. 4 shows a schematic view with detached parts, of the accelerator and of the steering handlebar in figures 2 and 3 in which some parts of figures 2 and 3 have been omitted;
- Fig. 5 shows a schematic view with detached parts, of a steering handlebar and an accelerator according to a second embodiment
- Fig. 6 shows a schematic view with detached parts of a further embodiment of the accelerator.
- a motor vehicle with the steering handlebar is globally denoted by reference numeral 1.
- the motor vehicle 1 is in particular a motorcycle.
- teachings of the present description are not limited to a motorcycle but in general are applicable in general to motor vehicles comprising a steering handlebar.
- teachings of the present description are also applicable to scooters, motorcycles with three wheels, two of which are two front steering wheels, lightweight commercial vehicles for transport of goods with two rear wheels and a front steering wheel, quads, electric bicycles and pedal-assisted bicycles etc.
- the vehicle 1 comprises a back-carriage 7 comprising a rear wheel 8.
- a steering fore-carriage comprising a steering handlebar 2, a fork 11, a front wheel 9 and two suspensions 12 is rotatably hinged to the back-carriage 7.
- the vehicle 1 comprises a motor 10, which in the example is an internal combustion engine.
- the motor 10 may be an electric motor or in a further embodiment, the engine 10 could be replaced by a hybrid propulsion unit, comprising at least one electric motor and at least one internal combustion engine .
- a first manual control group comprising an accelerator 3 and a brake lever 6 is coupled.
- the accelerator 3 comprises an accelerator knob 4.
- a second manual control group is coupled comprising a gripping knob 14 and a lever 16, which in the example is an actuation lever of the clutch of the engine 10.
- the first manual control group is preferably operable by the driver with the right hand while the second manual control group is preferably operable by the driver with the left hand.
- the gripping knob 14 of the second manual control group is only an ergonomic gripping knob while the knob 4 of the first command group in addition to being an ergonomic gripping knob is an accelerator knob, i.e. which allows the driver to control the power output from the engine 10.
- the aforementioned manual control groups may comprise further control elements such as switches, deviators for example provided to control the indicator lights, a horn, lighting units etc.
- the steering handlebar 2 comprises a main shaped and tubular body, to the end portions 5 and 15 of which the first and the second manual control groups are respectively attached.
- the accelerator 3 comprises a reaction torque transducer 20 adapted to receive torsional stresses due to a torsional force applied by a driver of the vehicle 1 to the accelerator knob 4 and to produce an electrical control signal of the power delivered by the motor 10.
- a reaction torque transducer In contrast to a rotary torque transducer, a reaction torque transducer has a rigid structure without rotating parts. So, in the present case, the reaction torque transducer 20 comprises a rigid structure adapted to oppose the rotation of the accelerator knob 4.
- the term rigid structure is taken to mean a structure devoid of parts with rotational movement except for small residual movements due to the residual elasticity of the materials .
- the reaction torque transducer 20 comprises a body 20', cylindrical in the example, having a first end portion 21 fixed to the steering handlebar 2 and a second opposite end portion 22 fixed to the accelerator knob 4.
- the body 20' has a cylindrical shape.
- the first and the second end portions 21 and 22 are two opposite cylindrical pins 21, 22 that protrude from opposite sides of the body 20' .
- the end portions 21 and 22 may be coupling flanges instead of being cylindrical pins.
- cylindrical pins 21, 22 are each provided with a respective recess 27, 28 to be respectively attached by attachment elements 25, 26, for example screws in the case of reversible attachment or rivets in the case of irreversible attachments, respectively to the steering handlebar 2 and to the accelerator knob 4.
- the steering handlebar 2 comprises a reaction bracket 51, fixed, for example welded, to the steering handlebar 2, provided with a coupling seat 52 adapted to receive the first end portion 21.
- the aforementioned coupling seat comprises a through hole crossed by an attachment element 25 suitable to lock the first end portion 21 of the reaction torque transducer 20 so as to prevent a rotation of the end portion 21.
- the vehicle 1 with a motor 10 comprises an electronic control unit 60 comprising an input port 61 of the signal and the accelerator 3 comprises an output port of the signal 29 on which said electric signal is supplied and which is adapted and configured to be operatively connected to the input port of the signal 60 of the electronic control unit, for example by means of a wired multipolar connection 65.
- the output port of the signal 29 comprises a connector fixed to the body 21' of the reaction torque transducer 20.
- the electrical signal supplied in output by the reaction torque transducer 20 is an analogue output signal having a voltage with an amplitude proportional to the torsional stress received by the aforesaid torque transducer 20. More preferably, the reaction torque transducer 20:
- - is such as to receive, for example via the multipolar wired connection 65, an analogue input signal in DC voltage having an amplitude;
- - comprises a transformation circuit of the amplitude of the voltage sensitive to the torsional stresses and adapted to produce the analogue output signal starting from the analogue input signal.
- the aforesaid transformation circuit of the amplitude of the voltage comprises a Wheatstone bridge comprising resistor elements, such as for example strain gauges, whose resistance depends on the dimensional deformations caused by the torsional stresses .
- the accelerator 3 comprises a coupling system with angular clearance adapted to permit a free rotation of the accelerator knob 4 with respect to the steering handlebar according to a limited angle starting from a rest position, so that an initial force applied to the acceleration knob 4 does not produce torsional stresses applied to the reaction torque transducer 20 and is thus not translated into an acceleration demand for the motor.
- the accelerator knob 4 has been rotated by an amount equal to the aforesaid limited angle starting from the rest position, thus reaching a limit angular position opposite the limit angular position corresponding to the rest position, a further force attempting to produce a rotation in the same direction is such as to impart stresses to the reaction torque transducer 20 and does not cause a further rotation of the knob 4 in that the latter reacts via the transducer 20 on the steering handlebar 2.
- Elastic return means may also be provided which tend to return the accelerator knob 4 to the rest position.
- the aforesaid limited angle is less than or equal to 20°, preferably less than or equal to 10°, more preferably less than or equal to 5°.
- the accelerator knob 4 comprises an attachment element 48 of a brake lever 6 to the accelerator knob 4. It is thus possible to make a manual control group in which the brake lever 6 is not directly attached to the steering handlebar 2 being attached to the accelerator knob 4 in turn attached to the steering handlebar 2.
- the aforesaid attachment element 48 is for example an attachment collar.
- the accelerator knob 4 comprises a covering sheath 40, for example rubber, and a support core 41 at least partially covered by the covering sheath 40.
- the support core 41 comprises a shaft 42 having a first end portion 43 attached to the reaction torque transducer 20.
- the attachment element 48 of the brake lever 6 can thus be attached to the support core 41 for example it may be a collar pulled tight around the support core 41.
- an attachment element 49 is also provided for, such as a collar 49 which can be clamped between clamping elements 59, such as screws or pins, to the support core 41.
- the aforesaid support core 41 comprises an inner cavity 45 provided with a bottom wall 46 and in which the end portion 5 of the steering handlebar 2 is engaged/engageable ; the aforesaid end portion 5 of the steering handlebar 2 is internally hollow and the shaft 42 at least partially passes through said end portion 5 of the internally hollow steering handlebar 2 and has a second end portion 44 fixed to said bottom wall 46 and opposite the first end portion 43 of the shaft 42 fixed to the reaction torque transducer 20.
- the accelerator 3 comprises a coupling flange 23 attached by screws or rivets 24, 26 to the end portion 43 of the shaft 41 and the second end portion 22 of the reaction torque transducer 20.
- the aforesaid coupling flange 43 is a conical flange in the case in which the second end portion 22 has a cross section having an area different from the area of the cross section of the end portion 43 of the shaft 41.
- the reaction torque transducer 20 is placed outside the steering handlebar 2 and the steering handlebar 2 comprises a tubular wall provided with a through hole 50 made on said wall and crossed by said shaft 42 to allow said first end portion 43 of the shaft 41 to jut outside said tubular wall and thus be attached to the second end portion 22 of the reaction torque transducer 20.
- reaction torque transducer 20 is arranged inside the internally hollow end portion 5 of the steering handlebar 2.
- the steering handlebar 2 in this case does not have a tubular body being made by moulding of a metallic material, for example being made of cast aluminium.
- the reaction bracket 51 is for example made integrally with the steering handlebar 2 and the steering handlebar comprises two coupling seats 54, 55, for example made integrally in the steering handlebar 2, provided for the attachment to the handlebar respectively of the torque transducer 20 and the accelerator knob 4.
- the aforesaid coupling seats 54, 55 are two cradle seats to which bridge attachment elements 56, 57 may be attached by means of screws or rivets (not shown in the figure) .
- a resilient coupling element 60 for example a helical spring, interposed between the reaction torque transducer 20 and the accelerator knob 4, for example having an end portion coupled to the reaction torque transducer 20 and an opposite end portion coupled to the accelerator knob 4.
- Said resilient coupling element 60 is both subject to torsional deformation and is such as to transmit torsional stresses to the reaction torque transducer 20.
- the resilient element is such to adsorb at least in part the torsional force applied through the rotation of the knob 4 to the transducer 20, allowing to better modulate the applied force.
- the resilient coupling element 60 may be provided between the reaction torque transducer 20 and the steering handlebar 2, for example between the transducer 20 and the bracket 51.
- the acceleration knob 3 is such as to rotate with respect to the reaction torque transducer and preferably said rotation occurs according to a limited angle, limiter either by the same elastic deformability of the resilient element in relation to the forces normally applied by a hand of a driver who acts on the acceleration knob 4 or by the presence of one or more of stopping elements adapted to stop a rotation of the knob 4.
- the aforementioned limited angle is less than or equal to 20°, preferably is less than or equal to 10°, more preferably less than or equal to 5°.
- the structural features of the resilient element in terms of shape, size and elastic constant and/or providing at least stop element for stopping the rotation of the accelerator knob 4 is possible to render the accelerator knob 4 rotatable with respect to the steering handlebar around a knob according to a limited angle.
- the above mentioned limited angle is less than or equal to 20°, preferably less than or equal to 10°, more preferably less than or equal to 5°.
- An accelerator as described allows the driver to maintain a comfortable wrist position while driving and also makes it possible to quickly switch between braking and acceleration or even to brake and accelerate simultaneously .
- an accelerator as described above may be part of a drive-by-wire system of a vehicle.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)
- Steering Devices For Bicycles And Motorcycles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITUB2015A001953A ITUB20151953A1 (en) | 2015-07-06 | 2015-07-06 | Accelerator for motor vehicle equipped with steering handlebar and motor vehicle comprising said accelerator |
PCT/IB2016/054020 WO2017006243A1 (en) | 2015-07-06 | 2016-07-05 | Accelerator for a motor vehicle with a steering handlebar and motor vehicle comprising said accelerator |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3319869A1 true EP3319869A1 (en) | 2018-05-16 |
Family
ID=54288946
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16757942.4A Withdrawn EP3319869A1 (en) | 2015-07-06 | 2016-07-05 | Accelerator for a motor vehicle with a steering handlebar and motor vehicle comprising said accelerator |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3319869A1 (en) |
IT (1) | ITUB20151953A1 (en) |
TW (1) | TWI690435B (en) |
WO (1) | WO2017006243A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT201700019335A1 (en) * | 2017-02-21 | 2018-08-21 | Visionar S R L | VEHICLE WITH A HANDLEBAR WITH ACCELERATION AND / OR BRAKING CONTROL. |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19751211A1 (en) * | 1997-11-19 | 1999-05-20 | Bayerische Motoren Werke Ag | Combination rotary grip for motor cycle for alternate operation of fuel mixture and braking organs |
TW386516U (en) * | 1998-03-18 | 2000-04-01 | Kwang Yang Motor Co | Improved triggering structure for an electric accelerator sensor for an electromotive motorcycle |
JP2006274869A (en) * | 2005-03-29 | 2006-10-12 | Yamaha Motor Co Ltd | Operation control device for saddle type transport machine |
EP2041413B1 (en) * | 2006-07-07 | 2018-10-03 | Magneti Marelli S.p.A. | Acquisition system for detecting the angular position of a knob for the gas of a motorcycle |
TWM353112U (en) * | 2008-09-30 | 2009-03-21 | Tsuen-Heng Tsai | Electric brush positioning structure for electric throttle accelerator |
JP2012001051A (en) * | 2010-06-15 | 2012-01-05 | Honda Motor Co Ltd | Accelerator operating device and play adjusting method for the same |
DE102010062517A1 (en) * | 2010-12-07 | 2012-06-14 | Robert Bosch Gmbh | Rotary handle module for controlling power of prime mover of two-wheeled vehicle e.g. motorcycle, has friction element that is provided for producing frictional force against rotational torque applied on rotary handle |
DE102013220696A1 (en) * | 2013-10-14 | 2015-04-16 | Bayerische Motoren Werke Aktiengesellschaft | Improved control handle |
-
2015
- 2015-07-06 IT ITUB2015A001953A patent/ITUB20151953A1/en unknown
-
2016
- 2016-07-05 WO PCT/IB2016/054020 patent/WO2017006243A1/en active Application Filing
- 2016-07-05 EP EP16757942.4A patent/EP3319869A1/en not_active Withdrawn
- 2016-07-05 TW TW105121187A patent/TWI690435B/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
TW201713529A (en) | 2017-04-16 |
TWI690435B (en) | 2020-04-11 |
WO2017006243A1 (en) | 2017-01-12 |
ITUB20151953A1 (en) | 2017-01-06 |
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Legal Events
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18D | Application deemed to be withdrawn |
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