Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
  • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
  • F16F9/32—Details
  • F16F9/56—Means for adjusting the length of, or for locking, the spring or damper, e.g. at the end of the stroke
• • 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 SIDECARS, FORECARS, OR THE LIKE
  • B62K25/00—Axle suspensions
  • B62K25/04—Axle suspensions for mounting axles resiliently on cycle frame or fork
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60G—VEHICLE SUSPENSION ARRANGEMENTS
  • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
  • B60G17/005—Suspension locking arrangements
• • 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 SIDECARS, FORECARS, OR THE LIKE
  • B62K5/00—Cycles with handlebars, equipped with three or more main road wheels
  • B62K5/02—Tricycles
  • B62K5/05—Tricycles characterised by a single rear wheel
• • 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 SIDECARS, FORECARS, OR THE LIKE
  • B62K5/00—Cycles with handlebars, equipped with three or more main road wheels
  • B62K5/08—Cycles with handlebars, equipped with three or more main road wheels with steering devices acting on two or more wheels
• • 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 SIDECARS, FORECARS, OR THE LIKE
  • B62K5/00—Cycles with handlebars, equipped with three or more main road wheels
  • B62K5/10—Cycles with handlebars, equipped with three or more main road wheels with means for inwardly inclining the vehicle body on bends
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
  • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
  • F16F9/06—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid
  • F16F9/062—Bi-tubular units
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
  • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
  • F16F9/06—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid
  • F16F9/064—Units characterised by the location or shape of the expansion chamber
  • F16F9/065—Expansion chamber provided on the upper or lower end of a damper, separately there from or laterally on the damper
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
  • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
  • F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
  • F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
  • F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
  • F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
  • F16F9/185—Bitubular units
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
  • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
  • F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
  • F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
  • F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
  • F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
  • F16F9/19—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein with a single cylinder and of single-tube type
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
  • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
  • F16F9/32—Details
  • F16F9/44—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
  • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
  • F16F9/32—Details
  • F16F9/44—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction
  • F16F9/46—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction allowing control from a distance, i.e. location of means for control input being remote from site of valves, e.g. on damper external wall
  • F16F9/466—Throttling control, i.e. regulation of flow passage geometry
  • F16F9/467—Throttling control, i.e. regulation of flow passage geometry using rotary valves
  • F16F9/468—Throttling control, i.e. regulation of flow passage geometry using rotary valves controlling at least one bypass to main flow path
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60G—VEHICLE SUSPENSION ARRANGEMENTS
  • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
  • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
  • B60G2204/46—Means for locking the suspension
  • B60G2204/4605—Means for locking the suspension hydraulically, e.g. interrupting communication between the chambers of a hydraulic cylinder
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60G—VEHICLE SUSPENSION ARRANGEMENTS
  • B60G2300/00—Indexing codes relating to the type of vehicle
  • B60G2300/12—Cycles; Motorcycles
  • B60G2300/122—Trikes
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60G—VEHICLE SUSPENSION ARRANGEMENTS
  • B60G2300/00—Indexing codes relating to the type of vehicle
  • B60G2300/45—Rolling frame vehicles
• • 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 SIDECARS, FORECARS, OR THE LIKE
  • B62K5/00—Cycles with handlebars, equipped with three or more main road wheels
  • B62K2005/001—Suspension details for cycles with three or more main road wheels
• • 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 SIDECARS, FORECARS, OR THE LIKE
  • B62K25/00—Axle suspensions
  • B62K25/04—Axle suspensions for mounting axles resiliently on cycle frame or fork
  • B62K2025/047—Axle suspensions for mounting axles resiliently on cycle frame or fork with suspension locking means
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
  • F16F2222/00—Special physical effects, e.g. nature of damping effects
  • F16F2222/12—Fluid damping
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
  • F16F2228/00—Functional characteristics, e.g. variability, frequency-dependence
  • F16F2228/06—Stiffness
  • F16F2228/066—Variable stiffness

Definitions

• the present invention relates to a shock absorber with bidirectional selective block, a wheel group comprising said damper with bidirectional selective block and a related motor vehicle.
• the suspensions are connecting elements of the vehicle frame to the wheels: said connecting elements comprise at least one elastic element, typically a spring which allows oscillations of the suspended mass (frame) with respect to the unsprung mass (wheel group) , and at least one shock absorber or a damper for said oscillations of the suspended mass.
• the known solutions are able to block the damping and therefore the suspension in a single direction, typically in the compression direction, while they are not able to implement a bidirectional selective block.
• This selective block can be useful, for example, in conditions of stop or advancement at extremely low speed of the motorcycle, in order to block the motorcycle in a predetermined trim condition, in terms of rolling and/or pitching.
• the rolling block may be carried out in applications on labile multitrack vehicles, that is, provided with at least three wheels (two of which are coupled to the forecarriage or to the rear axle) or on a four-wheeled vehicle.
• figure 1 shows a schematic sectional view of a shock absorber, in an unlocked configuration, according to an embodiment of the present invention
• figure 2 shows a schematic sectional view of the shock absorber in figure 1, in a blocked configuration
• figure 3 shows a schematic sectional view of a shock absorber, in an unlocked configuration, according to a further embodiment of the present invention
• figure 4 shows a schematic sectional view of the shock absorber in figure 3, in a blocked configuration
• figure 5 shows a perspective front view of a motorcycle comprising a shock absorber according to the present invention
• figure 6 shows a perspective view of a further motorcycle comprising a shock absorber according to the present invention.
• reference numeral 4 globally indicates a schematic overall view of a motor vehicle which incorporates at least one shock absorber 8 according to the present invention .
• motor vehicle must be considered in a broad sense; preferably, but not exclusively, the present invention is applied to a motorcycle .
• this definition also includes tilting three-wheel motorcycles, such as two front wheels 20' , 20" paired and steering wheels on the forecarriage 16 and a rear driving wheel 28 on the rear axle 24, but also motorcycles that include only one front wheel 20, steering, on the forecarriage 16 and two rear driving wheels 28 on the rear axle.
• the definition of motorcycle also includes the so-called quads, having two front wheels 20', 20" at the forecarriage 16 and two rear wheels 28 at the rear axle 24.
• the frame 12, the forecarriage 16 and the rear axle 24 can have any shape, dimension and can be, for example, of the truss-like type, of the box-type, die- cast type and so on.
• the frame 12 can be in one piece or in several parts .
• the rear axle 24 typically includes a swingarm 32 which supports the driver's and/or passenger's saddle.
• the swingarm 32 is for example hinged to the frame 12 by a pivoting pin 36. It should be noted that the connection between swingarm 32 and frame 12 may be direct, through direct hinging, or it may also be by the interposition of crank mechanisms and/or intermediate frames.
• the wheels are mechanically connected to the forecarriage and to the rear axle by means of respective wheel groups 40.
• the wheel group 40 comprises the front or rear wheel 20, 28, an elastic element (typically a spring, not shown) suitable to allow an excursion to the wheel 20, 28, and a shock absorber 44, suitable to dampen the oscillations/excursions of the wheel 20, 28.
• an elastic element typically a spring, not shown
• a shock absorber 44 suitable to dampen the oscillations/excursions of the wheel 20, 28.
• the shock absorber 44 comprises a main sheath 48 and a main piston 50 slidable within the main sheath 48 along a sliding direction X-X.
• the main sheath 48 is hollow, in a known manner, and is filled with hydraulic fluid.
• the main piston 50 comprises a main rod 52 protruding from the main sheath 48 and a main head 54 contained within the main sheath 48.
• the main rod 52 and the main sheath 48 are mechanically connected respectively to a wheel, either front 20 or rear 28, and to a frame 12 portion (either front 16 or rear 24) or vice versa.
• both the main shaft 52 and the main sheath 48 can be alternatively connected either to a wheel (front 20 or rear 28) or to a frame portion ( forecarriage 16 or rear axle 24) .
• the shock absorber 44 further comprises a secondary sheath 56 fluidically connected to the main sheath 48 and provided with at least one damping valve 60 comprising holes 62 suitable to allow a calibrated passage of the hydraulic fluid of the main sheath 48.
• said damping valve 60 comprises a damping plate, fixed to the secondary sheath 56 and at least partially perforated for the passage of hydraulic fluid.
• the secondary sheath 56 is connected to the main sheath 48 by a first and a second passage 64,68 placed at opposite ends to the main head 54 of the main piston 50, along the sliding direction X-X.
• the first passage 64 allows the flow of fluid when the main head 54 approaches the first passage 64 in a compression motion
• the second passage 68 allows the flow of fluid when the main head 54 approaches the second passage 68 in an extension motion
• the secondary sheath 56 comprises a control valve 72 movable, according to a regulation stroke, between a working position, in which it does not interfere with said first and second passages 64, 68, and a blocking position, in which it occludes said first and second passages 64, 68 so as to realize a selective two- way block in said compression and extension motions.
• control valve 72 is an axial valve which slides according to the regulation stroke and is integral with the damping valve 60 fitted with a damping plate 74 at least partially perforated for the passage of hydraulic fluid.
• control valve 72 comprises a pair of occluders 76, 78, arranged on opposite sides to the damping plate 74 so as to occlude each selectively the first and second passage 64, 68 respectively.
• said occluders 76, 78 are discs, provided with a lateral edge 77 suitable to occlude the first and second passage 64, 68 when placed at these, and provided with through openings 79 for the passage of fluid inside the secondary sheath 56.
• control valve 72 is fitted with a secondary rod 80 operatively connected to actuator means 82 for its actuation along the adjustment stroke.
• the secondary rod 80 protrudes from the secondary sheath 56 to be mechanically connected to said actuator means 82.
• the secondary sheath 56 is provided with at least one compensation volume 84, fluidically separate from the secondary fluid, delimited by a mobile septum 88 subjected to the pressure of the fluid coming from the main sheath 48.
• Said compensation volume 84 is filled with a compressible fluid, typically a gas.
• the mobile septum 88 is connected to elastic means contained inside the compensation volume 84.
• the shock absorber 8 according to the present invention can have different architectures.
• the main and secondary sheaths 56 are parallel and side by side with respect to the sliding direction X- X.
• said main and secondary sheaths 56 are parallel and coaxial with respect to the sliding direction X-X.
• the secondary sheath 56 is fitted on the outside of the main sheath 48.
• control valve 72 and the damping valve 60 are fitted around the main sheath 48.
• control 72 and damping valves 60 are mutually exclusive;
• the secondary sheath 56 has no secondary rod 80 and is sliding in block on the main sheath 48.
• the secondary sheath 56 can be operatively connected to said actuator means 82 in order to slide relative to the main sheath 48.
• the first and second passages 64, 68 are free or perpendicular, since the occluders 76,78 of the control valve 72 do not occlude said first and second passages 64 , 68.
• the compensation volume 84 decreases or expands as a function of the greater or lesser penetration of the main rod 52 within the main sheath 48, in a known manner. [00061] The fluid passing through the damping valve 60 is damped by the passage through the corresponding holes 62.
• the shock absorber and the related wheel 20, 28 is not free to oscillate but is constrained in the position in which it is at the moment of the occlusion of the first and second passages 64, 68.
• the blocking configuration is obtained by translating the control valve 72 by the relative regulation stroke, by means of the actuator means 82 which act, for example, on the secondary rod 80, if provided.
• the actuator means 82 which act, for example, on the secondary rod 80, if provided.
• the uses of the shock absorber block can be multiple.
• the shock absorber can perform the function of controlling/blocking the stroke of the relative wheel; furthermore, by blocking the wheel stroke, it can perform the function of locking the pitch and/or rolling movements of a motor vehicle.
• the rolling block can be implemented, by the present invention, in motor vehicles comprising at least three wheels (two of which are coupled to the forecarriage or rear axle) and in motor vehicles with four wheels.
• this block of the wheel stroke can also be used as a motor vehicle anti-theft function.
• shock absorber with bidirectional selective blocking allows, in contrast to known solutions, to completely block the suspension in both directions of compression and extension.
• the invention allows fixing a specific trim of the motorcycle, in terms of rolling and/or pitching, in stop or limited speed conditions, lower than a given threshold value.
• the solution is simple and inexpensive, and can also be applied to pre-existing suspension solutions, such as an add-on or retrofit device.
• shock absorbers and suspensions described above may make several modifications and variants to the shock absorbers and suspensions described above, all of which fall within the scope of the invention as defined by the following claims .

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Axle Suspensions And Sidecars For Cycles (AREA)
• Vehicle Body Suspensions (AREA)
• Fluid-Damping Devices (AREA)
• Automatic Cycles, And Cycles In General (AREA)
• Professional, Industrial, Or Sporting Protective Garments (AREA)

Priority Applications (7)

Applications Claiming Priority (2)

Publications (1)

Family

ID=59812004

Family Applications (1)

Country Status (10)

Cited By (2)

Families Citing this family (4)

Citations (3)

Family Cites Families (11)

• 2017
  • 2017-05-08 IT IT102017000049536A patent/IT201700049536A1/it unknown
• 2018
  • 2018-05-04 CN CN201880030826.9A patent/CN110785580B/zh active Active
  • 2018-05-04 ES ES18724339T patent/ES2863535T3/es active Active
  • 2018-05-04 US US16/611,375 patent/US11708125B2/en active Active
  • 2018-05-04 EP EP18724339.9A patent/EP3622195B1/en active Active
  • 2018-05-04 JP JP2019561280A patent/JP7158413B2/ja active Active
  • 2018-05-04 MX MX2019013389A patent/MX2019013389A/es unknown
  • 2018-05-04 WO PCT/IB2018/053116 patent/WO2018207066A1/en not_active Ceased
  • 2018-05-07 TW TW107115438A patent/TWI748095B/zh active
• 2019
  • 2019-11-06 IL IL270479A patent/IL270479B2/en unknown

Patent Citations (3)

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