WO2022175534A1 - Système de frein à disque(s) logé(s) à l'intérieur d'une roue de cycle - Google Patents
Système de frein à disque(s) logé(s) à l'intérieur d'une roue de cycle Download PDFInfo
- Publication number
- WO2022175534A1 WO2022175534A1 PCT/EP2022/054283 EP2022054283W WO2022175534A1 WO 2022175534 A1 WO2022175534 A1 WO 2022175534A1 EP 2022054283 W EP2022054283 W EP 2022054283W WO 2022175534 A1 WO2022175534 A1 WO 2022175534A1
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- WO
- WIPO (PCT)
- Prior art keywords
- wheel
- disc
- axis
- brake system
- caliper
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62L—BRAKES SPECIALLY ADAPTED FOR CYCLES
- B62L1/00—Brakes; Arrangements thereof
- B62L1/005—Brakes; Arrangements thereof constructional features of brake elements, e.g. fastening of brake blocks in their holders
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B27/00—Hubs
- B60B27/0047—Hubs characterised by functional integration of other elements
- B60B27/0052—Hubs characterised by functional integration of other elements the element being a brake disc
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B27/00—Hubs
- B60B27/0047—Hubs characterised by functional integration of other elements
- B60B27/0063—Hubs characterised by functional integration of other elements the element being a brake caliper mount
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J6/00—Arrangement of optical signalling or lighting devices on cycles; Mounting or supporting thereof; Circuits therefor
- B62J6/06—Arrangement of lighting dynamos or drives therefor
-
- 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
- B62K25/00—Axle suspensions
- B62K25/02—Axle suspensions for mounting axles rigidly on cycle frame or fork, e.g. adjustably
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62L—BRAKES SPECIALLY ADAPTED FOR CYCLES
- B62L3/00—Brake-actuating mechanisms; Arrangements thereof
- B62L3/02—Brake-actuating mechanisms; Arrangements thereof for control by a hand lever
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62L—BRAKES SPECIALLY ADAPTED FOR CYCLES
- B62L3/00—Brake-actuating mechanisms; Arrangements thereof
- B62L3/02—Brake-actuating mechanisms; Arrangements thereof for control by a hand lever
- B62L3/023—Brake-actuating mechanisms; Arrangements thereof for control by a hand lever acting on fluid pressure systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62L—BRAKES SPECIALLY ADAPTED FOR CYCLES
- B62L3/00—Brake-actuating mechanisms; Arrangements thereof
- B62L3/04—Brake-actuating mechanisms; Arrangements thereof for control by a foot lever
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- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
- F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B1/00—Spoked wheels; Spokes thereof
- B60B1/003—Spoked wheels; Spokes thereof specially adapted for bicycles
-
- 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
- B62K2206/00—Quick release mechanisms adapted for cycles
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D2065/13—Parts or details of discs or drums
- F16D2065/1304—Structure
- F16D2065/1312—Structure circumferentially segmented
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/12—Discs; Drums for disc brakes
- F16D65/123—Discs; Drums for disc brakes comprising an annular disc secured to a hub member; Discs characterised by means for mounting
Definitions
- the present invention relates to a brake system with at least one disc housed inside a wheel, and intended mainly for bicycles, that is to say bicycles, electrically assisted bicycles (VAE) and motorcycles .
- bicycles that is to say bicycles, electrically assisted bicycles (VAE) and motorcycles .
- VAE electrically assisted bicycles
- shocks for example:
- VAE electrically assisted bicycles
- the arm of the front fork on which the brake caliper is fixed absorbs the braking force creating significant asymmetrical mechanical stresses which require the reinforcement of the sleeves and the arch, generally resulting in additional weight.
- the deformation of the sliders can affect the proper functioning of the shock absorber.
- the polar inertia of the disc(s) in a very lateral position is significant, especially on fast motorcycles, where the gyroscopic effect is considerable, which degrades handling.
- a road bike (“racing bike") equipped with disc brakes would consume 3.3 Watts more on average than the same bike equipped with pad brakes, and up to 7 watts if the wind is little aside. This is one of the reasons why riders are reluctant to use the disc brake.
- the subject is less sensitive for city bikes and mountain bikes. However, intense efforts on the frame can create disc-pad interference.
- the fork tends to twist and the frame to deform, in particular the rear triangle.
- the caliper integral with the fork or the rear triangle, follows their oscillations which are different in amplitude and in direction from that of the wheel hub, which can create friction of the disc on the pads, friction that is all the more significant. that the guard would be limited or the frame dynamic (either with elasticity) or the veiled disc.
- the discs in particular the front, receive splashes of water, which delays the onset of braking until the disc is dry (wiping time), with consequences for safety.
- this lateral disc in its center, that is to say on a small radius (a little more than 2 cm in general), far from the braking surface (distant of about 5 cm from the center in general) , increases its weight and increases the mechanical stresses and the risk of warping.
- the new architecture makes it possible to remedy all or part of these drawbacks and therefore provides major competitive advantages, in particular: optimized and effective protection of the discs against shocks, elimination of the risks of injury represented by the discs mounted laterally , improved cycle handling, and improved braking performance and bike dynamics, simplified wheel assembly and disassembly, enhanced reliability and reduced maintenance.
- This innovation is aimed at large and growing markets: motorcycles (more than 60 million sold each year); electrically assisted bicycles or not, a market of around 100 million units per year, which is growing very strongly.
- the disc brake system for cycles (bicycles, VAE, motorcycles, etc.) comprises:
- a hand-held or pedestrian transmitter which, via a means of transmission, actuates a receiver which squeezes by pinching a disc placed in the mid-plane or almost of a wheel to which it is firmly attached;
- the invention is mainly characterized in that it comprises at least one disc secured to a wheel, this disc is pinched during braking by at least one caliper fixed solidly (at least in rotation) to an axle which is itself fixed integrally with the fork or the frame of the said cycle, on this axis a wheel hub allows it to turn freely in rotation and fixed in translation, the said hub consists of a straight half-hub and a half - left hub located on either side of the caliper attachment to said axle; at least one of said half-hubs is connected to the rim by an umbrella of spokes which may also be spokes.
- the disc brake system (sometimes hereinafter referred to as “Internal disc”) according to the invention therefore comprises:
- At least one brake caliper (and its pads) which is fixed directly by means of a tab (one-piece caliper or added) on the physical axle of the wheel, in the middle or almost.
- This axis is hollow to allow the passage of the transmission of the braking force and is fixed quickly or not on the fork or the frame; this axle can traditionally have its virtual axes of the wheel bearings and the means of connection (axle with nuts; quick release by lever/stem/knurled nut; spindle with nut, or, screwed directly into a fork arm or frame;.. .) with the fork or the frame which are concentric, or, more particularly in certain variants, these virtual axes are eccentric in order to conveniently accommodate the mechanical or hydraulic passage of the caliper control means; which allows the use of relatively small diameter wheel bearings.
- the braking forces of the caliper are taken up on the said wheel axle by an anti-rotation means (a key for example) and then for the said axle, preferably directly on at least one fixed point materialized by one of the two tabs fork or frame; for this, the ends of said axle are provided with an anti-rotation profile combined with the profile (open for a wheel with a solid axle with a nut at each end, or with a pierced axle for quick fixing, or else, closed for a wheel with spindle ) of the fork or frame dropouts in order to prevent any rotation of the caliper during braking.
- the caliper and its mechanism for pressurizing the pads are relatively conventional, whether mechanical or hydraulic.
- a hub composed of two half-hubs each equipped with at least one bearing such as for example a bearing which is mounted on the wheel axle, on either side of the fixing of the caliper to the said wheel axle, and close to each end of the wheel axle.
- Each half-hub, left or right, directly supports the spokes or spokes of the wheel constituting what is called an umbrella.
- the flanges (or blanks) of each half-hub receive, in a single block or attached, peripheral protuberances which preferably have the shape of a star with at least three branches whose ends support the fixing of the disc by its outer part (periphery).
- each half-hub supports a disc by the internal part of said disc.
- the bearings are of the types usually used in bicycles or motorcycles: ball, roller, cup or cage, metallic, ceramic or hybrid, with different levels of sealing.
- the left and right half-hubs are preferably identical and symmetrical with respect to the median plane of the fork or of the frame.
- the brake disc when it is thin, narrow and particularly lightened by holes is thus fixed at its periphery to the tops of the two star flanges of the half-hubs, which improves its rigidity and reduces its weight.
- the rim rotates with its disc via spokes or spokes attached to the half-hubs.
- the brake control passes through the hollow axle, supporting the bearings of the half-hubs of the wheel and can be:
- the master cylinder being traditionally positioned on the handlebars, or on the brake pedal (motorcycle), preferably, a quick coupling with connector without bleeding ensures the junction between the two parts of the hydraulic hose.
- the wheel can be fixed on the fork or on the frame as desired by: A quick release, a pin, nuts.
- the wheel is simply removed as if it were a wheel with pad brake:
- the reassembly of the wheel is also carried out as if it were a wheel with brake pads with the sequences in the reverse order of disassembly.
- each disk fixing screw will be longer on one side to cross the end of the star then the disk to be screwed directly into the other star directly or indirectly with said other star via a threaded spacer held in place by another shorter screw located on the other side.
- This disc removal operation can be done without dismantling the caliper or its support bracket, therefore without opening any hydraulic duct which would require bleeding the hydraulic circuit.
- the disc in particular if it is relatively thick, could be split into two half-discs which would therefore allow the dismantling of the disc without recoil from the axle of the wheel, a male / female interlocking of the connecting zones brake half-tracks allows a perfectly flat shoulder and is provided by the invention.
- the section of the disc would preferably be oblique and not radial, in order to avoid the slightest collision of the pads with the disc when passing through each connecting zone of the half-discs.
- the particular arrangement of the disc makes it possible to better evacuate the heat caused by the friction of the pads during braking, in fact the fixing of the disc on the ends of the star plates allow the said stars to constitute a kind radiator that efficiently exchanges its calories with the surrounding air.
- the design of the forks can be optimized due to reduced mechanical constraints and ideally balanced with the possibility of lightening, for example by working on the arch (a sort of bridge above the tire between the two fork arms) or even by deleting it.
- the umbrellas can be widened and symmetrical in relation to the median plane of the cycle, thus recovering the characteristics of the wheels with skids . More natural and improved wheel dynamics.
- the risk of the disc slipping is reduced thanks to its grip on the periphery, on the largest diameter and no longer in the center on the smallest diameter.
- induction lighting integration of magnets in the branches of the stars; sensor (solenoid) integrated in the brake calliper; power cable in the wheel axle and exiting opposite that controlling the brake mechanism, integrated magnetic counter: magnet in a branch of the stars: sensor in the brake calliper ...
- - Can be designed and manufactured at least as easily as side disc brake systems; allows a complete design of an integrated brake system with control of all the chains of dimensions guaranteeing optimal operation of the system.
- Manufacturers of lateral disc brakes are dependent on respecting the fixing dimensions of the calipers on the fork and the frame, for example.
- the range time at the bicycle manufacturer will be significantly lower for a bicycle with "Internal disc” than for the same bicycle with traditional discs: o
- the bicycle manufacturer receives the "Internal disc” brake system already mounted and adjusted ( disc and caliper) on the hub. All that remains is to mount the brake control on the handlebar and pass the brake sheaths. o
- the range time is reduced from the time usually required for the installation of the caliper, the mounting of the disc on the hub and the adjustment disc / caliper which is de facto eliminated.
- FIGS. 1 to 13 illustrate embodiments intended for light cycles such as bicycles, electrically assisted bicycles (VAE), etc.
- FIGS. 14 and 15 are embodiments intended for heavy cycles such as motorcycles, sidecars, etc.
- FIG 1 shows a 3 ⁇ 4 front right view of the braking system in a configuration where the braking control is entirely mechanical.
- FIG 2 shows a sectional front view of the model of figure 1.
- FIG 3 shows a right rear 3 ⁇ 4 view of the model of Figures 2 and 3 but where the half-hubs are one-piece with the stars.
- FIG 4 shows a right rear 3 ⁇ 4 view of another configuration, in this case, the transmission is mixed; mechanical at the transmitter and hydraulic at the receiver, which I then call hydromeca.
- FIG 5 represents a right front 3 ⁇ 4 view of the model in figure 4
- FIG 6 shows a right rear 3 ⁇ 4 view of a variant of the model in figure 4 and figure 5.
- FIG 7 represents a view from the right side of a hydraulic transmission configuration, the fork and its means of attachment to the wheel are absent.
- FIG 8 shows a sectional front view of the model of figure 7.
- FIG 9 shows a front view of the wheel axle of the previous model.
- FIG 10 shows a side view of the wheel axle of the previous model.
- FIG 11 represents the brake system in isolation and seen from the right front 3 ⁇ 4 of an improved model of the previous model.
- FIG 12 shows a cross-sectional right side view of the previous model.
- FIG 13 shows a right rear 3 ⁇ 4 view of the braking system installed on a rear wheel of a bicycle.
- FIG 14 shows a 3 ⁇ 4 view of a variant preferably for motorcycles, where the disc is fixed directly to the rim.
- FIG 15 shows a rear 3 ⁇ 4 view of the brake system with two discs mounted on a “neo-retro” type motorcycle front fork.
- the brake system according to the invention only shows the elements linked to the wheel, that is to say the receiving part of the braking system, the transmitting part which can for example be manual (lever on the handlebars) or pedestrian (pedal on the footrest) is not represented, because it remains traditional.
- Figures 1, Figure 2 and Figure 3 show the installation of a brake system according to the invention, said system is here entirely mechanical.
- a cable (3f) actuated from a lever on the handlebar slides in a sheath (G) placed in abutment (B) on an adjuster integral with the right arm of the fork (F) .
- Said cable (3f) is anchored by its lower pin to a lateral lever (3e) located concentrically and externally of the nut (11) for tightening the axle (8) of the wheel on the open lower leg of the fork ( F).
- This lever (3e) held by a screw (6c) rotates a rod (8a) preferably concentric with the axis (8); almost in the middle of the said axis (8), thanks to a slot made in this axis (8), the rod (8a) in turn drives in rotation a central lever (3d) fixed by a screw (6b) to the said stem (8a).
- a small cable (3c) with at least one head rotatably connects the central lever (3d) to the lever (3a) of the stirrup (3) on which a possible screw (3b) clamps the headless end of the cable ( 3c).
- the lever (3a) actuates the mechanism (3j) for pressurizing the pads (3i) which pinch the disc (2).
- Screws (6d) secure the stirrup (3) to the end of a support lug (3g), the other end of this support lug (3g) in the form of a half-collar is firmly fixed to the axis (8 ) by a half collar (3h) tightened by screws (6th).
- a key (22) puts in phase and fixes in rotation the support lug (3g) to the axis (8).
- Each half-hub (4) and (5) is provided with a part in the form of a lateral flange in which holes are made as lateral as possible and which receive the heads of the spokes (R); these spokes (R) thus constitute the right umbrella and the left umbrella which supports the rim (J) carrying the tire (P).
- each fork arm (F) consists of a part resembling a flat key
- this profile is advantageously used by the invention to constitute with the ends of the axis (8) equipped with diametrically opposed flat faces, an anti-rotation means during braking.
- Simple, economical, it allows a good number of cycles already in circulation to adapt the wheels according to the invention which would be sold as replacement accessories for another disc, drum or rim pad brake system.
- the brake system (1) is called hydromechanical; everything can be identical in the mechanical transmission of the brake control to the central lever (3d).
- said lever (3d) is connected by a small crank pin (23) to a piston (13) of the hydraulic master cylinder (12) which is directly attached to the caliper (3).
- the brake system (1) is a variant of the hydromechanical system described above, in this case, unlike the previous system, here the master cylinder is outside the umbrella of the spokes (R) of the half- hub (4).
- the lower end of the master cylinder (12) has a relatively thin cylindrical part (12a) which is screwed onto the shaft (8) so tight just on the outer side of the bearing stop (10) (9).
- the cable (3f) which is here immobile anchored to the body of the master cylinder (12), actuates by reaction of its sheath (G) the piston (13) of the hydraulic master cylinder (12).
- the piston (13) pushes the hydraulic fluid into the duct which via the pin (8) enters the caliper support (3g) to supply and therefore push the caliper piston (3 ).
- a spring placed under the piston (13) brings said piston (13) back to its neutral position when the braking action ceases.
- a protective bellows (14) isolates the attachment of the cable (3f) and its sheath (G).
- a plug screw (17) closes the hydraulic conduit machined in the axis (8). Ad hoc seals will be present at each open connection of the segments of the hydraulic conduit.
- the axis (8) Due to the use of a wheel spindle (18), the axis (8) has the particularity of having its virtual axis of the spindle eccentric with respect to the virtual axis of rotation of the wheel, which allows to free up a space to accommodate the hydraulic conduit, thus optimizing the use of the bearing (9) of relatively small diameter.
- the anti-rotation profile (8g) which in this presentation is two flats at each end of the axle (8) and which are housed in conjugation in shape with the fork plates (F) or frame (C).
- the first part (8e) of the hydraulic conduit is threaded to receive the plug screw (17), then the second part (8e) of the hydraulic conduit extends to the middle of the part (8h) where the tight or free (shoulders (8m) limit the lateral play) with the support bracket (3g), at this point the hydraulic conduit springs at (8d) or a counterbore (8i) accommodates a seal (26).
- the bearing surfaces (8k) with shoulders (8n) receive the bearings (9).
- the milling (8j) which receives the key (22) which blocks the stirrup (3) in rotation on the said axis (8).
- FIGs 11 and 12 is illustrated an improved configuration of the model of Figures 7 and 8 which was rather intended for mountain bikes, here the destination is rather directed towards road bikes.
- the caliper (3) is one-piece with its support bracket.
- a sealed plug (3k) closes the machining of the bore which allows the introduction of the hydraulic pistons.
- a bleed screw (3I) is provided in the caliper (3) above each said hydraulic piston.
- the hydraulic conduit (8d) passes through the caliper bracket to allow the hydraulic fluid to exert its pressure on each piston, which pinches the pads (3i), guaranteeing effective braking.
- the means for clamping the wheel on the fork (F) or the frame (C) is entrusted to a quick release traditionally consisting of a lever (S), a threaded rod (24) and a nut (25) knurled in this case.
- the invention provides for the interposition of spacers (21) between the quick release (S) - (25) and the fork arms (F) and which correspond to said misalignment.
- Figure 14 is illustrated a particular embodiment of the invention intended for heavy and / or fast cycles (motorcycle for example) and where the disc (2) to have a maximum diameter has peripheral fixing ears which preferentially s 'insert into clevises (J1) of U-section, molded or cut in the rim (J), and whose holes (J2) will receive the screws (6) connecting the disc (2) with the rim (J) but also connecting with at least one star (the right (4a) and/or the left (5a) of the half-hubs (4) and (5).
- said stars also serve as wheel spokes.
- a double caliper (3) has its support tab (3g) in the center of the wheel between the two discs (2).
- Each disc (2) is held in place by lugs which this time are not on the periphery of the disc (2), but on the contrary inside the brake track of the said discs (2): these lugs are integral with star flanges (4a) on the right and (5a) on the left; as for the other embodiments, the said stars (4a) and (5a) will be one-piece or attached (thanks to screws) on the half-hubs (4) and (5).
- each half-hub (4) and (5) will be equipped with two bearings, or bearings (9), as spaced as possible to allow the wheel to turn perfectly round on the axis (8).
- the discs (2) are mounted floating on the stars (4a) and (5a) in order to leave the discs (2) a certain lateral freedom which ensures perfect positioning of the discs between the pads (3i) during braking.
- the invention provides that this type of architecture can be achieved with a simple disc, slightly offset or perfectly centered in the middle of the wheel, in particular for light all-terrain motorcycles (cross, enduro, trial, etc.).
- the support bracket (3g) is of course perfectly integral in rotation with the axis (8) which is stationary opposite the fork (F) or the frame (C), but this support leg (3g) may optionally have a certain lateral freedom to allow the self-positioning of said caliper (3) on the disc (2) so as not to deform the said disc (2) in particular when the pads (3i) are worn out.
- any type of spoke, type of shelving or sticks can be used to connect the half-hubs (4) and (5) according to the invention with a rim (J) whether specific or standard. .
- the subject of the invention is a 1-cycle disc brake system comprising a receiving part actuated by a transmitting part via a transmission means.
- the transmitting part also called transmitter
- the receiving part also called receiver
- the transmission means adapted to the receiving part of the invention, also constitutes an innovative technique.
- system according to the invention can be operated via various transmission means, as will be seen later.
- This adaptability distinguishes the invention from known techniques, which are generally limited to a particular type of transmission medium. It is thus possible to design a relatively inexpensive system, through the use of an exclusively mechanical transmission means, to a high performance system, through the use of a hydraulic transmission means, passing through a hydromechanical hybrid system. .
- the receiving part comprises at least one disc 2 located in or close to the median plane of a wheel of the cycle 1.
- median plane is meant the plane generally corresponding to the plane of symmetry of the cycle, or bicycle.
- the median plane is generally perpendicular to the ground on which the vehicle is moving, being parallel to the direction of travel of the vehicle.
- the term “nearby” means a deviation from the median plane lower than the lateral dimensions of the wheel, and preferably a location located inside the wheel, in particular inside an umbrella of spokes of a wheel.
- the disc is integral with the wheel, for example by being fixed there to flanges of the wheel.
- the receiving part comprises at least one stirrup 3 configured to pinch, or grip, said at least one disk 2 during the braking of said cycle.
- Said at least one stirrup 3 is integrally fixed at least in rotation to an axle 8 of said wheel, said axle 8 being integrally fixed to a fork F or to a frame C of said cycle 1.
- the receiving part comprises a wheel hub disposed on said axis 8, said wheel hub being provided with bearings 9, which may be bearings, allowing said wheel to turn freely in rotation and to remain fixed in translation.
- said wheel hub consists of a right half-hub 4 and a left half-hub 5 located on either side of the caliper 3, at least one of said half-hubs 4, 5 being connected to said wheel.
- at least one of the half-hubs is connected to the rim J. This can be done by means of an umbrella of spokes R, or sticks.
- the two half-hubs are preferably located at a distance from each other, and preferably at a distance, axially, from the caliper 3 and from the disc 2.
- the wheel and therefore the disc 2 can rotate freely on the axis 8, without collision with the stirrup 3, thanks to the hub divided into half-hubs.
- Caliper 3 is quant to him perfectly fixed in rotation with respect to the cycle, which makes it possible to slow down the cycle when the stirrup 3 encloses the disc 2 at the time of braking.
- the particular design in two half-hubs allows in particular a simple replacement of the brake disc or the caliper, which can be removed simply after partial or total removal of the wheel axle 8.
- the use of half-wheels that have to be dismantled is particularly disadvantageous in terms of costs, ease of assembly, structural strength, etc.
- the proposed invention authorizes the use of an otherwise entirely conventional wheel, in particular with a one-piece rim.
- Removing the brake disc is even easier when the disc is made up of two half-discs, which can simply be removed without even having to handle the wheel axle 8.
- the cycle can remain completely intact when changing a disc composed of half-discs, therefore not requiring a dedicated workshop or species, nor specific tools, and being able to be carried out even by a user with little experience, intuitively and quickly.
- the particular design of the invention allows the use of symmetrical half-hubs, or even an entirely symmetrical wheel.
- This aspect has advantages in terms of manufacturing costs, simplicity of assembly, simplicity and speed of replacing elements, etc. No known technique provides for such symmetrical elements (hubs and/or wheel), nor does it authorize adaptation to such symmetrical elements.
- each disc 2 is fixed by peripheral lugs to flanges 4a, 5a of the wheel, and the half-hubs 4, 5 each have a single one, i.e. of a single, level 9.
- each disc 2 is fixed by internal lugs to flanges 4a, 5a of the wheel, and the half-hubs 4, 5 each have two bearings 9. It is however possible that the half- hubs each have only one bearing, or more than 2 bearings.
- the disc is notably not sandwiched between wheel half-rims; but it is simply attached to the wheel by its inner ears.
- This type of design is thus very simple and facilitates the maintenance of the brake system, while being very reliable, even for braking heavy vehicles.
- the flanges are in particular so-called “star” flanges, that is to say flanges provided with fixing branches giving them a star shape.
- the wheel axle 8 is hollow, to allow the transmission means to pass from the transmitting part to the stirrup 3.
- the transmission means is totally mechanical, and comprises, selectively or according to any technically effective combination:
- a first cable (3f) actuated from a so-called transmitter lever, sliding in a sheath (G) placed in abutment (B) on an adjuster integral with an arm of the fork (F) or of the frame (C); said cable (3f) being anchored by a lower pin to a lateral lever (3e) located concentrically and externally of a nut (11) for tightening the axle (8) of the wheel on a dropout of the fork (F) or of the frame (C); the lateral lever (3e), being held by a screw (6c), rotating a rod (8a) concentric with the axis (8); arranged substantially in the middle of said axis (8), thanks to a slot made in this axis (8), the rod (8a) driving in rotation a central lever (3d) fixed by a screw (6b) to the said rod (8a);
- a second cable (3c) with at least one head rotatably connects the central lever (3d) to a lever (3a) of the bracket (3) on which a screw (3b) clamps the headless end of the second cable (3c); the lever (3a) of the caliper (3) actuating a mechanism (3j) for pressurizing the pads (3i) which pinch the disc (2);
- the right (4) and left (5) half-hubs carry in an attached manner, by means of screws (6a), or in a single piece, wheel flanges (4a, 5a) whose outer ends (4a, 5a) take in "sandwich” a brake disc (2) by fixing it by its peripheral lugs using screws (6);
- Each half-hub (4, 5) is provided with a part in the form of a lateral flange in which are made substantially lateral holes, receiving the heads of the spokes (R); the spokes (R) constituting the right umbrella and the left umbrella which supports a rim (J) of the wheel carrying a tire (P) of the wheel.
- the transmission means is hydromechanical, and comprises, selectively or according to any technically effective combination:
- the transmission means is hydromechanical, and comprises, selectively or according to any technically effective combination:
- the transmission means is hydraulic, and comprises:
- a master cylinder (12) actuated from a lever; interposed in the hydraulic circuit at the level of a housing (8f),
- connection (20) preferably quick, without bleeding the hydraulic circuit when connecting the transmitter circuit, comprising the lever and the master cylinder, with the receiver circuit, comprising the caliper (3).
- a virtual axis (8c) for fixing the axis (8) of the wheel is offset with respect to an axis (8b) of rotation of the wheel, so that a space for accommodating a hydraulic conduit (8e) is configured inside the axle (8) of the wheel
- the axis (8) has its virtual axis (8c) of fixing (pin (18), quick rod (24), nut (11)) offset with respect to the axis virtual rotation (8b) of the wheel, which makes it possible to free up space to accommodate the hydraulic conduit (8e), thus optimizing the use of the bearing (9) of relatively small diameter.
- the axle (8) which secures the wheel to the fork (F) or the frame (C) has, selectively or according to any technically effective combination:
- An anti-rotation profile (8g) which are for example two flats at each end of the axle (8) and which are housed in conjugation in shape with the fork plates (F) or frame (C).
- the second part (8th) of the hydraulic conduit extends to the middle of the part (8h) which has shoulders (8m), part (8h) which ensures a free fixing or not with the support leg (3g), at this place the hydraulic conduit springs in (8d) or a counterbore (8i) reception a seal (26).
- the support bracket (3g) is of course perfectly integral in rotation with the axis (8) which is stationary opposite the fork (F) or the frame (C), but this support leg (3g) may possibly have a certain lateral freedom between the shoulders (8m) to allow the self-positioning of said caliper (3) on the disc (2) so as not to deform the said disc (2) in particular when the pads (3i) are worn.
- the axle (8) which secures the wheel to the fork (F) or the frame (C) has, selectively or according to any technically effective combination:
- the means for clamping the wheel on the fork (F) or the frame (C) is entrusted to a quick clamp consisting of a lever (S), a threaded rod ( 24) and a knurled nut (25); spacers (21) being interposed between the quick release (S)-(25) and the fork arms (F) and which correspond to the offset of the wheel fixing axis relative to the axis of rotation of the wheel.
- the stopper (10) on the right bearing (9) has an external protrusion equipped with a threaded part on which is fixed a free wheel (RI) carrier at least one pinion which cooperates with a chain (Ch); the wheel axle (8) being integral with the frame (C), as for the front wheel with the fork (F), either by nuts (11), or by a pin (18) or by a quick fastening (S )-(24)-(25).
- the disc (2) in order to have a maximum diameter, has peripheral fixing lugs which fit into yokes (J1) of U-section, preferably molded or cut in the rim (J), and whose holes (J2) receive fixing means such as screws (6) for connecting the disc (2) with the rim (J), but also for connecting with at least one flange of the wheel, in particular called star, also serving as wheel spokes.
- the system comprises two discs (2).
- the system comprises a double caliper (3), in particular comprising a support tab (3g) in the center of the wheel between the two discs (2).
- each disc (2) is preferably held in place by lugs which are inside the brake track of said discs (2).
- These lugs are integral with the wheel, for example via so-called star wheel flanges (4a) on the right and (5a) on the left.
- Said star flanges (4a) and (5a) are one-piece or attached to the half-hubs (4) and (5).
- Each half-hub (4) and (5) is then preferably provided with two bearings (9), preferably as spaced apart as possible in order to be able to turn perfectly round on the axle (8).
- the system comprises star flanges (4a, 5a), the branches of the star flanges (4a) and (5a) make it possible to fix magnetic studs (15) using screws (15a). which cooperate with at least one solenoid (16) fixed to the bracket (3), forming an electrical energy generator.
- the support bracket (3g) is perfectly integral in rotation with the axis (8) which is fixed opposite the fork (F) or the frame (C), said support bracket ( 3g) having a lateral freedom between shoulders (8m) to allow the self-positioning of said caliper (3) on the disc (2) so as not to deform said disc (2) in particular when the pads (3i) are worn.
- the disc is split into two half-discs, allowing the disc to be removed without recoil from the axle of the wheel; a male/female interlocking of the connecting zones of the brake half-discs allowing a perfectly flat shoulder; the section of the disc being preferentially oblique, that is to say that it preferentially non-radial.
- the cut it is possible for the cut to be radial, although this is less advantageous in terms of the reliability of the connection between the discs.
- the two half-discs are connected by a ring-shaped clip, preferably of substantially rectangular section.
- the half-discs are connected at the level of a disc ear, each half-disc thus comprising a half-ear, adapted to be assembled with a half-ear of the other half-disc.
- Each half-ear has a radial slot for inserting a clip. The clip is inserted into the respective slots of the half-ears, and thus maintains the two half-discs against each other. In this way, a fixing of the half-discs to one another is obtained which is very simple, quick to implement, and which reliably fixes the two half-discs.
- the section of the disc is in the shape of a chevron oriented tangentially to the disc, so as to ensure correct positioning of the half-discs relative to each other.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Braking Arrangements (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP22710005.4A EP4277836A1 (fr) | 2021-02-21 | 2022-02-21 | Système de frein à disque(s) logé(s) à l'intérieur d'une roue de cycle |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FRFR2101664 | 2021-02-21 | ||
FR2101664A FR3120049B1 (fr) | 2021-02-21 | 2021-02-21 | Système de frein à disque(s) logé(s) à l’intérieur des parapluies de rayons (ou bâtons) de la roue d’un cycle |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022175534A1 true WO2022175534A1 (fr) | 2022-08-25 |
Family
ID=76920820
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2022/054283 WO2022175534A1 (fr) | 2021-02-21 | 2022-02-21 | Système de frein à disque(s) logé(s) à l'intérieur d'une roue de cycle |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP4277836A1 (fr) |
FR (1) | FR3120049B1 (fr) |
WO (1) | WO2022175534A1 (fr) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29817120U1 (de) * | 1998-09-23 | 1999-07-29 | Kaufmann | Bremskraftunterbrechung für Zweiräder mit integrierter Lichtmaschine für Hydraulikbremssysteme |
WO2007000575A1 (fr) * | 2005-06-27 | 2007-01-04 | David Houghton | Systeme de freinage a disque interne pour cycles |
US7475950B1 (en) * | 2007-04-06 | 2009-01-13 | Glenn Aaron L | Motorcycle wheel assembly |
US20180154690A1 (en) * | 2016-12-07 | 2018-06-07 | Hyundai Motor Company | Hub unit having brake disk |
-
2021
- 2021-02-21 FR FR2101664A patent/FR3120049B1/fr active Active
-
2022
- 2022-02-21 WO PCT/EP2022/054283 patent/WO2022175534A1/fr unknown
- 2022-02-21 EP EP22710005.4A patent/EP4277836A1/fr active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29817120U1 (de) * | 1998-09-23 | 1999-07-29 | Kaufmann | Bremskraftunterbrechung für Zweiräder mit integrierter Lichtmaschine für Hydraulikbremssysteme |
WO2007000575A1 (fr) * | 2005-06-27 | 2007-01-04 | David Houghton | Systeme de freinage a disque interne pour cycles |
US7475950B1 (en) * | 2007-04-06 | 2009-01-13 | Glenn Aaron L | Motorcycle wheel assembly |
US20180154690A1 (en) * | 2016-12-07 | 2018-06-07 | Hyundai Motor Company | Hub unit having brake disk |
Also Published As
Publication number | Publication date |
---|---|
EP4277836A1 (fr) | 2023-11-22 |
FR3120049B1 (fr) | 2024-02-16 |
FR3120049A1 (fr) | 2022-08-26 |
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