• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a variable diameter wheel constituted by a central hub (1), a peripheral strip formed by a plurality of arcuate segments (6), each of the arcuate segments (6) being connected to said hub (1), the wheel comprising radial guiding means for sliding retractable radial arms (3), each of the retractable radial arms (3) being integral at its distal end with one of said arcuate segments (6), the opposite end being provided with a connecting member with a movable plate coaxial with said hub (1) and in relative rotation with respect to said hub (1), said movable plate having curved guide zones, each of said connecting members cooperating with one of said arms (3 ) to control the linear and radial displacement of the proximal end of the corresponding arm (3).
    公开号:FR3041284A1
    申请号:FR1558839
    申请日:2015-09-18
    公开日:2017-03-24
    发明作者:Vincent Fourdrinier
    申请人:Beautiful And Usable；
    IPC主号:
    专利说明:

    VARIABLE DIAMETER WHEEL Field of the invention
    The present invention relates to the field of variable diameter wheels for producing a tread or drive of variable length. Such wheels have multiple applications:
    Transport equipment, where the variation of the wheel diameter makes it possible to adapt to variable terrain
    Individual equipment such as wheelchairs, urban bicycles, ... where diameter reduction reduces congestion outside periods of use
    Belt drive disc, where the variation in the diameter of a pair of wheels makes it possible to modify the characteristics of a transmission
    Wheeled suitcase, where the variation of diameter of the wheels makes it possible to adapt to the nature of the ground on which the suitcase is moved
    Children strollers, also allowing to adapt the diameter of the wheels to the nature of the ground.
    This is of course simple examples of applications of such wheels with variable diameter.
    State of the art
    Many embodiments of variable diameter wheels are known in the state of the art.
    EP2444256 discloses, for example, a variable diameter wheel comprising a rim or a hub having a predetermined diameter connected by a drive shaft to the wheel and an outer surface external to the hub, having a diameter which is larger than the hub diameter. A diameter variation mechanism attached to the axle is adapted to vary the effective diameter of the wheel.
    Chinese patent CN101954834 describes another solution where the wheel support consists of arms and a piece of variable elastic diameter using springs in the form of a heart.
    Chinese patent CN101486054 proposes another solution implementing a conical element.
    Chinese utility model CN201362133 discloses a vehicle wheel having a continuously variable diameter, which is provided with a wheel hub. Telescopic rods are mounted in the wheel hub spokes. The spokes are in sliding relationship with the radially oriented telescopic rods.
    US Pat. No. 4,325,702 discloses a pulley with a variable diameter, comprising two coaxial discs that are rotatable relative to each other, one of which has a radial direction and the other at least one guide groove in the form of spiral. A plurality of segment-like support members are positioned between the disks and can be clamped with their end faces between the disks in different radial positions so that their radially outer peripheral zones define a polygonal path, which is similar to a circle.
    The support members having projections engaged in the guide grooves of the two disks so that the relative rotation of the disks displaces the support members radially to change the diameter of the respective circle.
    Disadvantages of prior art
    The solutions of the prior art implement relatively complex mechanisms inside the wheel, which makes them fragile and unsuitable for small-scale implementations such as suitcase wheels.
    Moreover, the number of moving parts to ensure the variation of the diameter reduces the forces and the torque that can be transmitted by the hub to the rim of the wheel and causes rapid wear producing play detrimental to the service life and operation of the wheel.
    Solution provided by the invention
    To overcome these drawbacks, the present invention provides a simple and robust solution to easily ensure a doubling of the minimum section of the wheel and a quadrupling of the unrolled length of the rim. The invention relates, in its most general sense, to a variable-diameter wheel constituted by a central hub, a peripheral band formed by a plurality of arcuate segments, each of the arcuate segments being connected to said hub, characterized in that said hub comprises means for radial guide for sliding retractable radial arms, each of the retractable radial arms being integral at its distal end with one of said arcuate segments, the opposite end being provided with a connecting member with a movable plate coaxial with said hub and rotation relative to said hub, said movable platen having curved guide areas, each of said link members cooperating with one of said arms to control the linear and radial displacement of the proximal end of the corresponding arm.
    Advantageously, said hub has slides section complementary to the section of the radial retractable arms to allow sliding of the arm relative to the corresponding slideway
    According to a variant, the distal end of said curved guide zones is substantially tangential.
    According to another variant, said movable plate is formed of two complementary disks disposed on either side of said retractable arms.
    Preferably, said guide zones are formed by spiral ribs cooperating with a connecting member formed by a stud extending axially with respect to the proximal end of each of said retractable arms.
    According to an arcuate embodiment, each of said arcuate segments has at least one peripheral groove for receiving an arcuate extension of at least one adjacent arcuate segment.
    Preferably, each of said arcuate segments has a plurality of peripheral grooves for receiving arcuate extensions of the two adjacent arcuate segments. The invention also relates to the application of such a wheel for the production of: a drive system comprising a transmission belt and two gears, characterized in that at least one of said gears is constituted by a gear wheel. variable diameter referred to above - of a wheelchair comprising variable diameter wheels referred to above - a rolling suitcase comprising wheels with variable diameter - of a vehicle comprising wheels with variable diameter.
    Detailed description of a non-limiting embodiment of the invention
    The present invention will be better understood on reading the description which follows, referring to a nonlimiting example of embodiment and to the accompanying drawings, in which: FIG. 1 represents a front view of the wheel in its widest extension; FIG. 2 represents an exploded view of the wheel - FIG. 3 represents a front view of the wheel in retracted configuration.
    The wheel according to the invention has the particularity of reversibly doubling the circumference to improve current uses, for example to limit the size of an everyday object, suitcases, strollers.
    With a suitcase and its tiny wheels, at the approach of a staircase, there is no other solution than to wear it.
    For a stroller, the user must choose between compactness / storage and maneuverability / crossing. Other applications are possible in many other areas, a wheelchair (for space and storage), carriers, devils, folding bikes, etc.
    Such a wheel is also applicable to a vehicle with crossing requirements (military or robotic machine in rough terrain), allowing for example to go from a 21-inch wheel to a 42-inch wheel, which greatly increases its capabilities and skills.
    Such a wheel according to the invention makes it possible to incorporate an electrical servocontrol and / or to integrate a motorization (in order to transform it into a wheel / motor).
    Figures 1 and 2 show views of the wheel in its deployed configuration in which it has the maximum outside diameter.
    It comprises a hub (1) and a rim (2) connected by retractable arms (3). These arms (3) extend radially and present in the example described a rectangular section.
    The hub (1) consists of a body (4) having a central axis (5) and radially extending slides.
    These slides (50) has a cross section complementary to that of the retractable arms (3) to allow the sliding of these arms (3) within the corresponding slide (50), with a sliding bearing guide or optionally with rolling elements.
    Each arm (3) is extended at its distal end with an arcuate segment (6) extending at an angle of 360 / N degrees, where N is the number of arms (3).
    Each arcuate segment (6) has a tread section formed of two rigid parts (7, 8) symmetrical with respect to the median plane in the example described, separated by a slot (9) and a connecting segment ( 10) of complementary shape to the slot (9).
    The link segment (11) of the adjacent arcuate segment (12) slides within the slot (9) to allow a variation of the circumference of the wheel depending on the diameter change, and to provide an uninterrupted running surface.
    As seen in Figure 2, the connecting segment (10, 11) is formed by a block whose width corresponds to the slot (9), extended at each end by a pair of pins (24 to 26) for guiding relative to arcuate guide grooves (27) provided on the inner face of the two rigid portions (7, 8) of each arcuate segment (6).
    The operation is as follows:
    The wheel further comprises a control plate, formed of two disks (20) coaxial with the hub (1), arranged symmetrically on either side of the arms (3).
    Each disc (20) has N grooves (21), N corresponding to the number of arms (3).
    These grooves have a spiral shape, with an end closest to the substantially tangential radius, forming an angle of between 5 and 15 degrees with respect to the tangent, and extending to a peripheral zone where the end of the groove forms also an angle of between 5 and 15 degrees to the tangent.
    The groove (21) extends over an angular sector of the disc (20) of 180 ° in the example described, but it can extend over a smaller sector, between 90 and 180 ° to allow a rapid variation of the diameter, or on the contrary more important, between 180 and 360 ° to allow a more gradual variation of the diameter.
    The curvature profile of the grooves (21) is constant. It can also be variable, with increasing and decreasing variation of the angle between the tangent at a point of the spiral and the radial axis passing the same point.
    Each groove is defined by a function of type: R = fn (alpha) where R denotes the distance of a point of the groove from the axis of the disk
    Alpha designates the angular position of this point with respect to a reference ray passing the proximal end of the groove.
    Each groove is offset from the previous by an angle of 360 / N where N is the number of arms.
    The function fn may be a constant function, of type 360 / K where K denotes the range of angular displacement of the disc between the retracted position and the extended position of the arms. K may be greater than or less than 1.
    The function fn can also be a progressive function, for example of the sinus type, to control at the beginning and at the end of the extension of the arms a slow and faster evolution between these two situations. It may also have one or more bearings to allow indexed extension.
    Each arm (3) has at its proximal end two lugs (22, 23) symmetrical with respect to the median plane, intended to cooperate with a groove (20) in order to control the linear displacement of the end of the arm (3) in the guide slide (50) correspondingly.
    The operation is as follows. In the retracted position shown in FIG. 3, the arms (3) are retracted, the disk (20) being positioned angularly with respect to the hub (1) in a position in which the proximal ends of the grooves (21) are aligned with the axis radial passing through the corresponding arm (3).
    When this disk (20) is rotated relative to the hub (1), the point of contact between the lugs (22, 23) provided at the proximal end of the arm (3) and the corresponding groove (21) moves towards the periphery of the disc (20), which causes the erection of the arms (3) in the deployed position.
    The guiding of the arms (3) by the slides (50) ensures a high robustness of the wheel whatever the level of extension.
    权利要求:
    Claims (11)
    [1" id="c-fr-0001]
    1 - Variable diameter wheel constituted by a central hub (1), a peripheral band formed by a plurality of arcuate segments (6), each of the arcuate segments (6) being connected to said hub (1) characterized in that said hub (1) comprises radial guiding means (5) for sliding retractable radial arms (3), each of the retractable radial arms (3) being integral at its distal end with one of said arcuate segments (6), the end opposed being provided with a connecting member (22, 23) with a movable plate (20) coaxial with said hub (1) and in relative rotation with respect to said hub (1), said movable plate (20) having zones of curved guide (21), each of said connecting members (22, 23) cooperating with one of said arms (3) to control the linear and radial displacement of the proximal end of the corresponding arm (3).
    [0002]
    2 - variable diameter wheel according to claim 1 characterized in that said hub (1) has slides (50) complementary section to the section of the radial retractable arms to allow sliding of the arm (3) relative to the slide ( 50).
    [0003]
    3 - variable diameter wheel according to claim 1 characterized in that the distal end of said curved guide zones (21) is substantially tangential.
    [0004]
    4 - variable diameter wheel according to claim 1 characterized in that said movable plate is formed of two complementary discs (20) disposed on either side of said retractable arms (3).
    [0005]
    5 - variable diameter wheel according to claim 1 characterized in that said guide zones are formed by spiral ribs (21) cooperating with a connecting member formed by a stud (22, 23) extending axially with respect to 1 proximal end of each of said retractable arms (3).
    [0006]
    6 - variable diameter wheel according to claim 1 characterized in that each of said arcuate segments (6) has at least one peripheral groove (27) for receiving an arcuate extension (10, 11) of at least one adjacent arcuate segment.
    [0007]
    7 - Variable diameter wheel according to claim 6 characterized in that each of said arcuate segments (6) has a plurality of peripheral grooves (27) for receiving arcuate extensions of the two adjacent arcuate segments.
    [0008]
    8 - Drive system comprising a transmission belt and two gears, characterized in that at least one of said gears is constituted by a variable diameter wheel constituted by a central hub, a peripheral band formed by a plurality of arcuate segments each of the arcuate segments being connected to said hub, said hub comprising radial guide means for sliding radial retractable arms, each of the retractable radial arms being integral at its distal end with one of said arcuate segments, the opposite end being provided with a connecting member with a movable platen coaxial with said hub and rotated relative to said hub, said movable platen having curved guide areas, each of said connecting members cooperating with one of said arms to control the linear displacement and radial of the proximal end of the corresponding arm.
    [0009]
    9 - Wheelchair comprising wheels with variable diameter characterized in that said wheels are constituted by a central hub, a peripheral band formed by a plurality of arcuate segments, each of the arcuate segments being connected to said hub, said hub comprising guide means radials for sliding retractable radial arms, each of the retractable radial arms being integral at its distal end of one of said arcuate segments, the opposite end being provided with a connecting member with a movable plate coaxial with said hub and rotating relative to said hub, said movable platen having curved guide areas, each of said link members cooperating with one of said arms to control the linear and radial displacement of the proximal end of the corresponding arm.
    [0010]
    10 - Rolling suitcase comprising wheels with variable diameter characterized in that said wheels are constituted by a central hub, a peripheral strip formed by a plurality of arcuate segments, each of the arcuate segments being connected to said hub, said hub comprising means for radial guide for sliding retractable radial arms, each of the retractable radial arms being integral at its distal end with one of said arcuate segments, the opposite end being provided with a connecting member with a movable plate coaxial with said hub and rotation relative to said hub, said movable platen having curved guide areas, each of said link members cooperating with one of said arms to control the linear and radial displacement of the proximal end of the corresponding arm.
    [0011]
    11 - Vehicle comprising wheels with variable diameter characterized in that said wheels are constituted by a central hub, a peripheral strip formed by a plurality of arcuate segments, each of the arcuate segments being connected to said hub, said hub comprising guide means radials for sliding retractable radial arms, each of the retractable radial arms being integral at its distal end of one of said arcuate segments, the opposite end being provided with a connecting member with a movable plate coaxial with said hub and rotating relative to said hub, said movable platen having curved guide areas, each of said connecting members cooperating with one of said arms to control the linear and radial displacement of the proximal end of the corresponding arm.
    类似技术:
    公开号 | 公开日 | 专利标题
    FR3041284A1|2017-03-24|VARIABLE DIAMETER WHEEL
    EP2763859B1|2017-01-18|Omnidirectional wheel that can be driven by a motor, and vehicle provided therewith
    CA2540813C|2013-08-20|System for guiding a vehicle along at least one guiding rail
    EP1278984B1|2005-07-20|Self-propelled carriage capable of moving in a cylindrical tunnel
    FR2753574A1|1998-03-20|TURNING TAPE CONTACTOR, PARTICULARLY FOR MOTOR VEHICLES
    FR2960930A1|2011-12-09|Omnidirectional spherical wheel moving device for e.g. three-wheeled electric traction vehicle, has passive peripheral casters carried by rigid structure and following movement of spherical wheel for their displacement in structure
    FR2497902A1|1982-07-16|DEVICE FOR CONVERTING A ROTARY MOTION IN A LINEAR MOVEMENT
    CN201784632U|2011-04-06|Luggage trolley with stair climbing booster
    FR2539682A1|1984-07-27|MECHANISM FOR SUPPORTING A CONSOLE ON A STEERING WHEEL
    EP3379105A1|2018-09-26|A roller gearing element
    EP2858830B1|2018-01-17|Omnidirectional wheel
    EP2862726B1|2016-08-31|Variable-track rolling toy
    FR2695447A1|1994-03-11|Hubless wheel in form of sphere contained in envelope - includes roller driven body, turning in interior of envelope which has opening in its lower part permitting this body to contact ground, with body maintained at distance from envelope walls by rollers or ball bearings
    WO2021001570A1|2021-01-07|Transformable wheel suitable for climbing stairs and autonomous robot equipped with at least one such wheel
    EP2971826B1|2017-03-29|Boot protecting the male and female elements of a transmission joint and transmission joint equipped with such a protective boot
    EP2891822A2|2015-07-08|Power transmission device
    FR3047693A1|2017-08-18|FOLDING WHEEL
    FR2730773A1|1996-08-23|SLIDING TRANSMISSION JOINT, IN PARTICULAR A TRIPOD
    EP3827502A1|2021-06-02|Rolling device adapted to roll on a ground surface
    WO2005080824A1|2005-09-01|Multi-gear transmission system
    FR2622944A1|1989-05-12|Device making it possible to vary the diameter of a pulley
    EP1291267A1|2003-03-12|Spare wheel fixation for automobile, more specifically equipped with an axle wheron an element such as a spare wheel can be fixed
    FR3002788A1|2014-09-05|Mechanical motion transmission for use in e.g. vehicle, has mechanical unit for preventing connector from driving over rolling track's portion that is remote from axis of main shaft, where main shaft comprises arm with connector
    FR2821023A1|2002-08-23|Rotating electrical machine e.g. synchronous motor, has shape of pole pieces and magnets chosen so that difference between the direct axis inductance and quadrature inductance is minimal and teeth do not have constant size
    BE437347A|
    同族专利:
    公开号 | 公开日
    PL3349993T3|2022-01-24|
    WO2017046468A1|2017-03-23|
    EP3349993A1|2018-07-25|
    EP3349993B1|2021-06-30|
    JP2018531843A|2018-11-01|
    CN108349302A|2018-07-31|
    US11014402B2|2021-05-25|
    US20180257429A1|2018-09-13|
    ES2894646T3|2022-02-15|
    BR112018005415A2|2018-10-09|
    FR3041284B1|2017-11-24|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB251256A|1925-04-23|1926-11-11|Alfred Wang|Improvements in wheels for vehicles|
    GB498623A|1937-10-30|1939-01-11|Frank Bailey Knight|Improvements in or relating to wheels for tractors, lorries and other vehicles|
    EP0665128A1|1994-01-28|1995-08-02|Matsushita Electric Industrial Co., Ltd.|Variable outer diameter wheel and vehicle providing it|
    US245564A|1881-08-09|Traction-wheel |
    DE336525C|1916-08-02|1921-05-03|Berliner Actiengesellschaft Fu|Grab wheel, especially for agricultural machines|
    US1366810A|1919-12-19|1921-01-25|Frank A Kimble|Traction attachment for vehicle-wheels|
    FR584458A|1924-06-18|1925-02-07|Removable articulated rim for pneumatic tires of wheels|
    FR678098A|1928-10-25|1930-03-18|Extendable rim|
    US4601519A|1985-10-04|1986-07-22|Andrade Bruce M D|Wheel with extendable traction spikes and toy including same|
    CN201362133Y|2009-03-16|2009-12-16|刘建伟|Vehicle wheel with continuously-variable diameter|
    CN102896970B|2012-08-30|2015-08-19|柳州市京阳节能科技研发有限公司|Multifunction hydraulic companding wheel|
    CN104802589B|2015-05-15|2017-03-01|枣庄海晟电动车科技有限公司|Foldable telescopic cycle wheel|US9878576B2|2013-03-15|2018-01-30|X-Sim Llc|Segmented wheel and method and system for controlling a segmented wheel|
    US10864959B2|2017-10-23|2020-12-15|Honda Motor Co., Ltd.|Vehicle and related control system|
    KR102136158B1|2018-12-04|2020-07-22|한국타이어앤테크놀로지 주식회사|Transforming tire|
    KR102139500B1|2018-12-11|2020-07-30|서울대학교산학협력단|Transform Wheel and Robot having the transform wheel|
    FR3100009B1|2019-08-22|2021-08-13|Philippe Rhul|Extension wheel and mobility system implementing one or more extension wheels|
    CN110654168B|2019-09-27|2021-12-17|达英科设备有限公司|Inflation-free tire with variable contact area|
    CN111216491B|2020-02-28|2021-07-09|山东大学|Wheel structure and vehicle with adjustable wheel diameter|
    CN113524983A|2021-06-10|2021-10-22|季华实验室|Tire with adjustable radial stiffness and method of manufacture|
    法律状态:
    2016-09-15| PLFP| Fee payment|Year of fee payment: 2 |
    2017-03-24| PLSC| Publication of the preliminary search report|Effective date: 20170324 |
    2018-06-13| PLFP| Fee payment|Year of fee payment: 3 |
    2018-06-29| ST| Notification of lapse|Effective date: 20180531 |
    2018-07-27| RN| Application for restoration|Effective date: 20180622 |
    2018-08-17| FC| Decision of inpi director general to approve request for restoration|Effective date: 20180717 |
    2018-09-29| PLFP| Fee payment|Year of fee payment: 4 |
    2019-09-29| PLFP| Fee payment|Year of fee payment: 5 |
    2020-09-29| PLFP| Fee payment|Year of fee payment: 6 |
    2021-09-30| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1558839A|FR3041284B1|2015-09-18|2015-09-18|VARIABLE DIAMETER WHEEL|FR1558839A| FR3041284B1|2015-09-18|2015-09-18|VARIABLE DIAMETER WHEEL|
    JP2018534029A| JP2018531843A|2015-09-18|2016-08-31|Wheel with variable diameter|
    EP16767002.5A| EP3349993B1|2015-09-18|2016-08-31|Variable diameter wheel|
    PL16767002T| PL3349993T3|2015-09-18|2016-08-31|Variable diameter wheel|
    BR112018005415A| BR112018005415A2|2015-09-18|2016-08-31|wheel of variable diameter.|
    CN201680061615.2A| CN108349302A|2015-09-18|2016-08-31|Diameter-variable wheel|
    PCT/FR2016/052155| WO2017046468A1|2015-09-18|2016-08-31|Variable diameter wheel|
    US15/760,958| US11014402B2|2015-09-18|2016-08-31|Variable diameter wheel|
    ES16767002T| ES2894646T3|2015-09-18|2016-08-31|Variable diameter wheel|
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