WO2025176830A1 - Ensemble destiné à être accouplé à une unité d'entraînement et à une roue d'un vélo - Google Patents

Ensemble destiné à être accouplé à une unité d'entraînement et à une roue d'un vélo

Info

Publication number
WO2025176830A1
WO2025176830A1 PCT/EP2025/054697 EP2025054697W WO2025176830A1 WO 2025176830 A1 WO2025176830 A1 WO 2025176830A1 EP 2025054697 W EP2025054697 W EP 2025054697W WO 2025176830 A1 WO2025176830 A1 WO 2025176830A1
Authority
WO
WIPO (PCT)
Prior art keywords
assembly
drive
drive element
rotation
wheel
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.)
Pending
Application number
PCT/EP2025/054697
Other languages
English (en)
Inventor
Alastair Rupert Joseph DARWOOD
Oliver Thomas Joyce
Andrew John DURNAN
Mareks ZEVALDS
Michael James Douglas
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Blue Sky Ip Ltd
Original Assignee
Blue Sky Ip Ltd
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 Blue Sky Ip Ltd filed Critical Blue Sky Ip Ltd
Publication of WO2025176830A1 publication Critical patent/WO2025176830A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
    • B62M6/40—Rider propelled cycles with auxiliary electric motor
    • B62M6/60—Rider propelled cycles with auxiliary electric motor power-driven at axle parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M11/00—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
    • B62M6/40—Rider propelled cycles with auxiliary electric motor
    • B62M6/60—Rider propelled cycles with auxiliary electric motor power-driven at axle parts
    • B62M6/65—Rider propelled cycles with auxiliary electric motor power-driven at axle parts with axle and driving shaft arranged coaxially

Definitions

  • the invention relates to an assembly for coupling a drive unit and a wheel of a bicycle, for transmission of torque from the drive unit to the wheel.
  • Patent publication number W02022038207 discloses apparatus for connecting a drive unit to a wheel, where the apparatus is mounted on a hub of the wheel, extending radially from the hub between spokes and an end of the hub. The apparatus thereby occupies a thin space.
  • the hub may be configured for a rim-brake bicycle or for mounting of a disc rotor of a disc braking system.
  • the apparatus enables releasable engagement of a drive shaft of the drive unit to a drive element in the form of a pinion gear.
  • the pinion gear is meshed with a drive member that includes an internal gear.
  • the drive member is fixedly coupled to the hub.
  • the drive member is fixed to the disc rotor mount in place of a conventional disc rotor.
  • the pinion gear is mounted on a mounting member, which is attached to the drive member and non-rotatable relative to drive member.
  • the publication discloses that the pinion gear may be supported by a single annular bearing on a side of the pinion gear nearer an engaged drive unit. It has been found that long term use of the apparatus with the pinion gear supported in this way results in wear of parts and occasional breakage. An object of the present invention is to address this problem. Particular difficulty arises due to need to mount the apparatus in a thin space such that the drive member can rotate between spokes and a chainstay when mounted on a rear wheel or between spokes and a fork when mounted on a front wheel.
  • an assembly for coupling between a drive unit and a wheel, preferably but not exclusively of a bicycle, for transmission of torque from the drive unit to the wheel comprising: a drive element coupled to a drive member, for example comprising a pinion gear coupled to the drive member, for driving rotation of the wheel about a wheel rotation axis, such that rotation of the drive element about a drive element rotation axis drives rotation of the drive member and thereby the rotation of the wheel; and a mounting assembly attached to, for example mounted on, the drive member and non-rotatable therewith about the wheel rotation axis, wherein the mounting assembly includes first and second bearing assemblies arranged to retain the drive element.
  • the first bearing assembly is on a side nearer a fork tine or a chain stay
  • the second bearing assembly is on a side nearer the spokes.
  • first and second bearing assemblies improves durability of parts, particularly of the drive element and the mounting assembly. Both can be included in the available space.
  • the drive element may be arranged to be driven by a coaxial drive shaft of the drive unit.
  • the drive element rotation axis and the wheel rotation axis may be parallel.
  • the pinion gear may be non- disengageable from the drive member.
  • the first and second bearing assemblies may be at different positions along the drive element rotation axis.
  • the mounting assembly may retain the first and second bearing assemblies each on or at a respectively opposite axial side of the drive element.
  • the drive element may include an end portion, for example on a side of the drive element along the drive element rotation axis remote from spokes.
  • the first bearing assembly may comprise an annular bearing assembly fixed to the mounting assembly and around the end portion, to retain the end portion and to permit rotation about the drive element rotation axis.
  • the drive element (for example the end portion) may be configured to enable releasable engagement with a correspondingly configured drive shaft end of the drive shaft of the drive unit, such that rotation of the drive shaft causes rotation of the drive element about the drive element rotation axis.
  • the drive element may be configured to include an opening in the end portion and to receive the drive shaft end through the opening with the drive shaft extending through the first bearing assembly.
  • the drive member gear may be an internal gear or a spur gear, for example.
  • the assembly may further comprise an annular bearing assembly, wherein the mounting assembly and the drive member are fixed to the annular bearing assembly to enable the rotation of the drive member without rotation of the mounting member.
  • the mounting assembly may further comprise fixing means fixing the first and second parts together.
  • the fixing means may comprise at least one dowel pin, wherein the at least one dowel pin is engaged in opposing recesses on each of the first and second parts to impede or prevent relative movement of the first and second parts radially with respect to the wheel rotation axis.
  • Use of the at least one dowel pin facilitates maintenance of concentricity of the first and second bearing assemblies and the drive element, versus use of bolts in the same places.
  • the fixing means may further comprise at least one bolt fixing the first and second parts together.
  • One of the first and second parts may include a projection and the other of the first and second parts may include a retaining recess for receiving the projection. This supports alignment of the first and second parts and consequently concentricity of the first and second bearing assemblies and the drive element, and also alignment of the drive element and drive member.
  • the assembly may be for mounting on a mount of a hub of the wheel.
  • the mount is integrally formed with an outer shell of the hub.
  • the mount may be a disc brake rotor mount and the assembly may be for mounting on the disc brake rotor mount when a disc brake rotor is absent.
  • the drive member preferably provides a recessed region in which the drive element is at least partially located and in which the drive element is coupled with the drive member.
  • the drive element rotation axis may be parallel to a rotation axis (or axle) of the hub.
  • the drive element and the first and second bearing assemblies may be located on the drive element rotation axis spaced from the axle orthogonally with respect to the rotation axis of the hub. That is, the drive element and the first and second bearing assemblies do not extend in space on the drive element rotation axis beyond a position thereon orthogonal to the end of the hub.
  • Figure 1 is a perspective view of a bicycle wheel including a transmission assembly, and a drive shaft of a drive unit;
  • Figure 2 is a perspective view of parts of the bicycle wheel shown in Figure 1 , viewed from a cassette side of the wheel;
  • Figure 3 is an exploded perspective view of parts of the transmission assembly and drive shaft shown in Figure 1 ;
  • Figure 4 is another exploded perspective view of parts of the transmission assembly and drive shaft
  • Figure 5 is an exploded view from the same perspective as the view of Figure 4, with a central annular bearing being shown within a central aperture of a mounting member;
  • Figure 6 is a close up view of some of the parts
  • Figure 7 is another close up view of some of the parts.
  • Figure 8 is a view of some of the parts, with amounting member absent.
  • Figure 9 is a schematic view of parts of a transmission assembly in accordance with an alternative embodiment of the invention.
  • Embodiments of the invention relate to a transmission assembly for coupling a drive unit to a wheel, particularly to a hub of a wheel and particularly a wheel of a bicycle, and to a drive system comprising such a transmission assembly and drive unit.
  • the transmission assembly is mountable on the hub and configured to enable engagement of the drive unit such that operation of an engaged drive unit can drive rotation of the wheel.
  • the drive unit includes a drive shaft and is operable to drive rotation of the drive shaft.
  • the transmission assembly is mounted on the hub of a wheel of a bicycle.
  • the drive unit may be operable to drive rotation of the drive shaft independently of pedals of the bicycle, or operable to assist in cycling when a rider is turning the pedals.
  • the drive unit may include an electric motor to drive rotation of the drive shaft, but embodiments are also not limited to including an electric motor.
  • Embodiments may be implemented with any drive unit configured to produce torque that can be transferred to a drive element in the transmission assembly.
  • embodiments of the transmission assembly may be driven by a drive shaft of a drive unit in the form of an internal combustion engine.
  • the wheel has an axis about which the wheel rotates and the term “central axis” shall be construed accordingly.
  • the terms “hub axis” and “rotation axis” are to be construed as the same central axis.
  • the terms “radial”, “outer”, “inner”, “external” and “internal” are to be construed in relation to the hub axis unless otherwise indicated by context.
  • spokes are to be construed as covering any arrangement that functions as spokes, including arrangements where elongate members spanning between a rim and a hub are integrally formed with the rim and/or the hub and also where the spokes are replaced by a disc spanning between a rim and a hub.
  • the transmission assembly is mounted onto a hub 22 of a rear wheel 20 of a bicycle.
  • the wheel 20 includes a cassette 24 and spokes.
  • An axle 25 extends through the hub 22 and the cassette 24 about which the hub 22 rotates.
  • the transmission assembly may alternatively be mounted on a front wheel of a bicycle.
  • the drive member 12 is arranged to fix to the hub 22 for synchronous rotation therewith.
  • the mounting assembly is for retaining the drive element 16 in a position engaged with the drive member 12, such that a drive shaft of the drive unit can engage with the drive element 16 to drive rotation of the drive element 16 and thus the drive member 10.
  • the drive member 12 is located and rotates between spokes of the wheel and a frame portion of the bicycle.
  • the drive member 10 has a first side that faces outwardly away from spokes of the wheel and a second side that faces the spokes.
  • the drive member 10 includes a mounting portion, an annular back plate 10c, an internal gear 10d, a second cylindrical wall 10e and an annular braking rotor portion 10f.
  • the mounting portion includes a first cylindrical wall 10b having a cylindrical outer circumferential surface.
  • the first and second cylindrical walls 10b, 10e are coaxially mounted with respect to the hub 22.
  • the first cylindrical wall 10b extends from the annular back plate 10c away from the spokes of the wheel 20.
  • the annular back plate 10c extends radially outwardly with respect to the hub axis, from an end of the first cylindrical wall 10b.
  • the second cylindrical wall 10e also extends from the annular back plate 10c away from spokes of the wheel 20.
  • the internal gear 10d is mounted on an internal surface of the second cylindrical wall 10e, facing the outer surface of the first cylindrical wall 10b.
  • the first and second cylindrical walls 10b, 10e are spaced to provide an annular recessed region 26 between them, in part of which the internal gear 10d is located.
  • the hub 10 is of a conventional type and includes a conventional disc rotor mount (not shown) configured to enable mounting of a matching conventional disc rotor.
  • the mount is configured according to a conventional centre lock design.
  • a conventional disc rotor configured for the centre lock design may be secured to the mount and used in a conventional disc braking system using the lock ring 23.
  • an interior surface of the first cylindrical wall 10 is configured to engage with the mount.
  • a conventional disc rotor must be removed from the mount of the hub, if attached, to enable this and to permit the drive member 10 to be located on the hub 22.
  • the drive member 10 may also be removed from the mounting plate and replaced if it wears out.
  • the drive member 10 is locked in place with the lock ring 23.
  • the engagement of the drive member 10 to the mount prevents relative rotation of the drive member 10 and the hub such that the drive member 10 and the hub 10 rotate synchronously.
  • Hubs of other types are known that do not include a mount with a centre lock design for mounting of a disc rotor on the hub, but instead include alternative disc rotor mounts.
  • the drive member 10 may in variant embodiments be configured to attach to such mounts.
  • disc brake rotor mounts may use a well known six bolt design enabling attaching of a corresponding configured disc rotor having six holes equally angularly spaced around the rotation axis.
  • the annular plate 10c includes holes enabling bolting to a mount in accordance with the six bolt design and can thus be securely bolted to the mounting plate in place of the conventional disc rotor.
  • the transmission assembly may be mounted on a hub specifically designed to provide a mount for the transmission assembly that is not suitable for mounting of a conventional disc rotor.
  • Embodiments are not limited to any particular configuration enabling secure attachment of the drive member 10 and the hub 22.
  • the transmission assembly may be mounted to a hub of a wheel that uses conventional rim brakes.
  • the mount may be in accordance with a six bolt design or a centre lock design or other design used with conventional disc rotors, and thus be identical to a mount for mounting of conventional disc rotors.
  • the mount may be to a different design not known for use with conventional disc rotors and the mounting portion may be configured correspondingly.
  • the annular braking rotor portion 10f may be absent.
  • mounts for disc brakes are made as integral parts of hubs by major manufacturers such as Shimano ®. Such mounts are typically in accordance with six bolt and centre lock designs.
  • the hub 22, spokes and rim of the wheel 20 are functionally distinct parts common to all wheels. This is true regardless of whether two or all of these parts are formed together.
  • the mounting assembly includes a first part in the form of a mounting member 12.
  • the mounting member 12 is mounted on the drive member 10 such that it is rotatably independent of the drive member, that is, it does not rotate with the drive member.
  • the mounting member 12 is fixed in place so that it remains stationary relative to the frame of the bicycle or is able to rotate about the wheel rotation axis to only a small angular extent by a rotation prevention means, such as with an arm (not shown) that clamps to the frame or a strap.
  • a rotation prevention means such as with an arm (not shown) that clamps to the frame or a strap.
  • the mounting member 12 is fixed in place via rotation prevention means attached to an engaged drive unit.
  • the mounting member 12 includes a wall 12a providing a cylindrical interior surface defining a space in which the central bearing assembly 14 is located, an outer race of the central bearing assembly 14 being located against the cylindrical interior surface.
  • the mounting member 12 also includes an inwardly projecting rim 12b at an outer side of the mounting member 12 against which the outer race of the central bearing assembly 14 abuts.
  • the mounting member 12 also includes bolt holes 17 at equal, angularly spaced intervals with respect to the central axis in a plane around the cylindrical interior surface.
  • a fixing ring 19 having corresponding bolt holes 20 is fixed to an inner side of the mounting member 12, to retain the outer race of central bearing assembly 14 against the cylindrical interior surface and the rim 12b. This arrangement ensures that the bearing assembly 14 is securely affixed to the mounting member 12; embodiments are not however limited to this and alternative mounting methods may be employed.
  • the mounting member 12 is shaped to provide an aperture 64 through which an end of a drive shaft 11 may extend, and also features enabling securing of the drive unit to the mounting member 12. Such features include first and second drive unit engagement recesses 72a, 72b and a curved bayonet engagement recess 73. As can be seen in Figure 4, the mounting member 12 includes first and second engagement recess walls 76a, 76b. Although not shown in the Figures, the drive unit includes projections that project each into a respective recesses 76a, 76b when the drive shaft is engaged through the aperture 64.
  • the drive unit includes a bayonet-type twist attachment feature that engages in the bayonet engagement recess 73 and enables the drive unit to be releasably mounted on the mounting member 12.
  • Embodiments of the invention are not limited to any particular mechanism for attachment and release of the drive unit to the mounting member 12.
  • the drive element 16 has a pinion portion 16a and first and second end portions 16b, 16c.
  • the pinion portion has circumferential pinion teeth and a central drive element axis.
  • the first and second end portions 16b, 16c extend from the pinion portion 16a in opposite directions and each have a cylindrical exterior surface arranged to rotate about the drive element axis.
  • the pinion portion 16a and the first and second ends 16b, 16c are formed of a single piece of durable material, for example steel, titanium or aluminium.
  • a diameter of each of the cylindrical exterior surfaces is less than a diameter of the pinion body portion 16a, although this is not essential in variant embodiments provided space is available for first and second annular bearing assemblies, described below.
  • the pinion portion 16a is engaged with the internal gear 10d, such that rotation of the pinion portion 16a about the central drive element axis drives rotation of the internal gear 10d and thus the drive member 10.
  • the pinion portion 16a is not disengageable from the internal gear 10d.
  • the mounting assembly further comprises an annular first bearing assembly 50, an annular second bearing assembly 52, a second part in the form of a bearing housing 54, bolts 56 and first and second dowel pins.
  • the bearing housing 54 includes a bearing mounting portion 58, first bolt holes 60, first dowel recesses 61 and provides a retention recess 79.
  • the first and second bearing assemblies 50, 52 are arranged to retain the drive element 16, to facilitate rotation of the drive element 16 about the drive element axis. Embodiments are not limited to any particular design for the first and second bearing assemblies, provided they enable the drive element 16 to rotate relative to the other parts of the mounting assembly. Such annular bearing assemblies are widely available.
  • An inner race of the first bearing assembly 50 is fixed around the cylindrical exterior surface of the first end 16b of the drive element 16.
  • the mounting member 12, at a side facing the spokes, is shaped to provide a cylindrical surface.
  • An outer race of the first bearing assembly 50 is fixed to this cylindrical surface.
  • the bearing housing 54 is shaped to retain the second annular bearing assembly 54 in the bearing mounting portion 58 and an outer race thereof is fixed to the bearing housing 54 at the bearing mounting portion 58.
  • the second bearing assembly is flanged, that is, has an outwardly projecting annular flange 52a of the second annular bearing assembly 52 abuts the bearing housing 54.
  • the bearing housing 54 provides an annular recessed surface 54a, the flange 52 and the recessed surface 54a being shaped so that the flange 52a abuts the recessed surface 54a and so that lateral radial movement relative to the drive element axis is impeded or prevented.
  • the flange 52a usefully avoids need for a lip, plate or other feature in the bearing housing 54 to be provided for the second bearing assembly 52 to abut when it is inserted.
  • the mounting member 12 includes bolt holes 70a-c and second dowel recesses 71a, 71 b.
  • the mounting member 12 also includes a projection 80.
  • the bearing housing 54 is fixed to the mounting member 12 with the bolts 56 through the holes 70a-c
  • the projection 80 shaped to engage in the retaining recess 79 to prevent relative radial movement of the mounting member 12 and the bearing housing 54.
  • the projection 80 and the retaining recess 79 are cylindrical.
  • the projection 80 may be otherwise shaped and the retaining recess 79 correspondingly shaped to recess the projection 80.
  • the drive system includes rotation prevention means to prevent unwanted rotation of the mounting member 12 and the drive unit.
  • This may be in the form of a strap from the drive unit attaching to a frame of the bicycle, or an arm mounted on the mounting member 12 attached or abutting the frame of the bicycle.
  • the drive unit may be fixed rigidly in place with respect to the frame of the bicycle, for example using a releasable clamping arm.
  • the drive unit is releasably mounted on the mounting member 12, which includes the drive shaft end being located into the keyway 65. Operation of the drive unit then drives rotation of the drive shaft 11. Due to the engagement of the drive shaft end and the drive element 16, the rotation of the drive shaft 11 drives rotation of the drive element 16.
  • the drive element 16 is retained between the first and second bearing assemblies 50, 52. The drive element 16 causes rotation of the internal gear and thus the drive member 10 and the hub 22.
  • the transmission assembly may be modified to include a spur gear.
  • the pinion portion of the drive element 16 mates with the spur gear.
  • Embodiments are not limited to the drive member or the drive element being a specific type of gear, provided they can each perform their function together.
  • the first end of the drive shaft may be modified to be longer and be retained by the first annular bearing assembly and additionally at least one further annular bearing assembly extending around the first end.
  • the first end projects away from the spokes and the mounting assembly is modified to retain the further annular bearing assembly.
  • the mounting assembly may, if it were permitted to rotate, project sufficiently to abut a seat stay.
  • the second annular bearing 16c may be present as described above, or may be absent with the mounting assembly modified accordingly. Sufficient support may be provided by the first annular bearing assembly and the at least one further annular bearing assembly so that the second annular bearing assembly is not required.
  • a drive element 16 and mounting assembly may be modified relative those in the transmission assembly described with reference to Figures 1 to 8.
  • a drive element 116 has a cylindrical recess coaxial with the drive element rotation axis extending from an opening thereto in the second end 116c of the drive element 116.
  • the mounting assembly includes a pin 190 located in the recess.
  • a second bearing assembly in the form of a needle roller bearing assembly 152 is provided, located between the pin 190 and a cylindrical interior surface of the recess.
  • An inner race of the needle roller bearing assembly is fixed to the outer surface of the pin.
  • An outer race of the needle roller bearing assembly is fixed to the drive element 16, at the cylindrical interior surface of the recess.
  • the pin 190, cylindrical recess in which the pin is located and the second annular bearing assembly 152 need not be cylindrical in nature.
  • the pin may instead be conical and the pin and the second annular bearing assembly adapted correspondingly.
  • the mounting member 12 is mounted on the drive member 10 and is rotatably independent of the drive member 10.
  • an alternative mounting member is mounted on a frame of a bicycle, for example on a chain stay using a clamp.
  • the alternative mounting member is configured to support the drive element mounting assembly and the drive element mounted in the assembly, with the drive element being coupled to the drive member 10.
  • the alternative mounting member may also be configured for supporting and releasable securing of the drive unit or an additional or separate mounting member provided for this purpose.
  • Embodiments are not limited to the specific designs of the mounting assembly described herein. In particular, embodiments are not limited to the specific designs of bearing housing 54 and/or the mounting member 12, provided they retain the drive element 16, 116 with the first and second bearings 50, 52, 152 supporting the drive element 16, 116 at axially opposing ends of the drive element and/or such that the retaining of the first and second bearings is performed at axially opposing ends of the drive element.
  • concentricity of the first and second bearing assemblies and the drive element is desirable in all embodiments for durability of the transmission assembly. Inclusion of two bearing assemblies improves concentricity, as well as other features that prevent lateral movement in a plane orthogonal to the wheel rotation axis. Embodiments are not limited to any particular way in which concentricity of the drive element and the first and second bearing assemblies is maintained. Notably, in all embodiments, engagement of the end of the drive shaft into the keyway in the drive element can be considered to be “loose”, so that the drive shaft end can be easily inserted and removed by a user. Thus, the drive shaft does little to assist with maintaining of concentricity.
  • the recess may be provided in the bearing housing and a curved aperture provided in the mounting member enabling a bayonet element to be projected through the curved aperture into the bayonet recess in the bearing housing for engagement.
  • Embodiments are not limited to any way in which the drive unit is releasably secured to the mounting member described in relation to any embodiment or variant or alternative embodiment.
  • the drive unit being releasable provides advantages in that the drive unit can be removed for security against theft, for convenience of battery charging, and so that the bicycle may be used without the drive system.
  • the drive unit need not be releasable from the transmission assembly and may be fixedly secured thereto.
  • Parts of the transmission assemblies described above may be made with conventional materials, typical durable, rigid metals such as steel, aluminium or titanium. Parts may alternatively be made of hard plastics material.
  • the drive member described above may be integrally formed with the hub.
  • Embodiments are not limited to transmission systems for mounting on hubs of wheels of bicycles.
  • Transmission systems in accordance with embodiments may be mounted on hubs of wheels of other vehicles, including, without limitation, trolleys, carts, tricycles, other vehicles not having an integrated motor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Gear Transmission (AREA)
  • General Details Of Gearings (AREA)

Abstract

Ensemble destiné à être accouplé entre une unité d'entraînement et une roue d'un vélo, pour la transmission d'un couple de l'unité d'entraînement à la roue. L'ensemble comprend un élément d'entraînement (16 ; 116) et un ensemble de support. L'élément d'entraînement comprend un pignon (16a ; 116a) accouplé à un élément d'entraînement (10) pour entraîner la rotation de la roue autour d'un axe de rotation de roue, de sorte que la rotation de l'élément d'entraînement autour d'un axe de rotation d'élément d'entraînement entraîne la rotation de l'élément d'entraînement, ce qui entraîne la rotation de la roue. L'ensemble de support est fixé à l'élément d'entraînement (10) et ne peut pas tourner avec celui-ci autour de l'axe de rotation de roue. L'ensemble de support comprend un premier et un second ensemble de paliers (50, 52 ; 150, 154) agencés pour retenir l'élément d'entraînement.
PCT/EP2025/054697 2024-02-23 2025-02-21 Ensemble destiné à être accouplé à une unité d'entraînement et à une roue d'un vélo Pending WO2025176830A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2402634.6A GB2638952A (en) 2024-02-23 2024-02-23 An assembly for coupling a drive unit and a wheel of a bicycle
GB2402634.6 2024-02-23

Publications (1)

Publication Number Publication Date
WO2025176830A1 true WO2025176830A1 (fr) 2025-08-28

Family

ID=90572606

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2025/054697 Pending WO2025176830A1 (fr) 2024-02-23 2025-02-21 Ensemble destiné à être accouplé à une unité d'entraînement et à une roue d'un vélo

Country Status (3)

Country Link
GB (1) GB2638952A (fr)
TW (1) TW202545775A (fr)
WO (1) WO2025176830A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06183389A (ja) * 1992-12-21 1994-07-05 Secoh Giken Inc 電動自転車
JP2000006874A (ja) * 1998-06-23 2000-01-11 Hisaki Sekkei Kk 電動補助自転車
EP2613998B1 (fr) * 2010-09-09 2015-08-12 Günter Lang Unité d'entraînement pour véhicule à deux roues
US20200283093A1 (en) * 2018-08-14 2020-09-10 Msns, Llc Electric Bicycle Motor System
GB2598164A (en) * 2020-08-18 2022-02-23 Rupert Joseph Darwood Alastair Connection of a drive unit to wheel

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040065495A1 (en) * 2002-10-02 2004-04-08 Peng-Yu Huang Drive mechanism of an electrical bike
US9359040B2 (en) * 2014-06-20 2016-06-07 Securience, LLC Electric bike retrofit for disc brakes bicycle
ES2774706T3 (es) * 2017-10-11 2020-07-22 Alpine Drive Gmbh Dispositivo de accionamiento eléctrico para una bicicleta

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06183389A (ja) * 1992-12-21 1994-07-05 Secoh Giken Inc 電動自転車
JP2000006874A (ja) * 1998-06-23 2000-01-11 Hisaki Sekkei Kk 電動補助自転車
EP2613998B1 (fr) * 2010-09-09 2015-08-12 Günter Lang Unité d'entraînement pour véhicule à deux roues
US20200283093A1 (en) * 2018-08-14 2020-09-10 Msns, Llc Electric Bicycle Motor System
GB2598164A (en) * 2020-08-18 2022-02-23 Rupert Joseph Darwood Alastair Connection of a drive unit to wheel
WO2022038207A1 (fr) 2020-08-18 2022-02-24 Blue Sky Ip Ltd Agencement d'une unité d'entraînement à une roue

Also Published As

Publication number Publication date
GB202402634D0 (en) 2024-04-10
TW202545775A (zh) 2025-12-01
GB2638952A (en) 2025-09-10

Similar Documents

Publication Publication Date Title
US5626401A (en) Spoked wheel hub
CN100453399C (zh) 自行车用盘式制动器转子组装体
CA2508440C (fr) Moyeu pour roues mues electriquement, et vehicule ainsi equipe
US8220578B2 (en) Construction kit and method for converting a bicycle, and bicycle
US20050264111A1 (en) Hub unit for use in electrically movable wheels and vehicle comprising the hub unit
TWI461327B (zh) Bicycle hub with motor
JPH07276906A (ja) 車軸アセンブリ
EP2818393B1 (fr) Dispositif de moyeu électrique et vélo électrique
EP4200150B1 (fr) Agencement d'une unité d'entraînement sur une roue
US20070222275A1 (en) Wheel Provided With a Drive-Dependent, Exchangeable Coupling Element
US11325676B2 (en) Electric drive device for a bicycle
US6095617A (en) Integrated wheel and wheel hub assembly, particularly for a vehicle
WO2025176830A1 (fr) Ensemble destiné à être accouplé à une unité d'entraînement et à une roue d'un vélo
JP7656597B2 (ja) 側面装着の車輪付き前輪モータ駆動自転車
CA2280672C (fr) Assemblage de carter de pont
JP2019167005A (ja) インホイールモータ駆動装置
US20100212985A1 (en) Transmission system for a cycle
TWI922488B (zh) 用於將驅動單元連接至車輪以使得該驅動單元驅動該車輪繞該車輪之中心軸線旋轉的設備與將驅動系統之驅動單元連接至車輪之輪轂上的轉子盤安裝構件的方法
TW202237467A (zh) 自行車用後輪轂
US12552197B2 (en) Wheel system with an adapter disc
TWI901694B (zh) 用來將後鏈輪組件安裝到人力驅動車用後輪轂組件之工具、及人力驅動車用後鏈輪組件
TW202545739A (zh) 轉接器裝置及具備轉接器裝置的人力驅動車用的後輪轂總成
US20050212351A1 (en) Wheel support system and ornamental accessory
JP2023176076A (ja) 人力駆動車用のハブ
JP2003034282A (ja) メーターケーブル用ギヤユニットの連結構造

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 25708687

Country of ref document: EP

Kind code of ref document: A1