• 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 object of the invention is a device for adjusting the tension of a transmission member at the rear wheel of a bicycle, comprising a front plate, a rear pinion, a belt or transmission chain, a rear fork supporting the XX 'rear wheel axis, characterized in that this adjusting device comprises two pieces (34-1, 34-2) connecting, right and left, reported or come from manufacture with the rear fork (28), two inserts (36-1, 36-2) right and left mounted on said connecting pieces (34-1, 34-2) and provided with housings (38-1, 38-2) blind, provided to receive the ends of the wheel axle XX 'and translational adjustment means (44-1, 44-2) interposed respectively between said connecting pieces (34-1, 34-2) and said inserts (36-1, 36-2).
    公开号:FR3037035A1
    申请号:FR1555053
    申请日:2015-06-03
    公开日:2016-12-09
    发明作者:Thierry Besson；Frederic Bernard；Alexandre Guiral
    申请人:SVO；
    IPC主号:
    专利说明:

    [0001] BACKGROUND OF THE INVENTION The subject of the present invention is a device for adjusting the tension of a belt transmission, particularly in the case of a transmission for a bicycle. , especially one more mountain bike. Chain drives used for bicycles, especially mountain bikes, are well known. These transmissions generally comprise at least one toothed plate and at least one toothed pinion connected to each other by a chain. In an improved manner, several trays and several gears are provided as well as derailleur means for moving from one tray to another and from one gear to the other.
    [0002] These known means have many disadvantages. First of all, the system is vulnerable on any terrain and the rear derailleur in particular is subject to the risk of frequent breakage, in case of a fall of course but especially in case of impact against the reliefs of the terrain, often very uneven, which is the all-terrain. In some cases, a pebble thrown by the front wheel of the user himself leads to breakages of this type. Another disadvantage is that the delicacy of the settings initially but also as and when wear, whether on city bike or mountain bike or hiking. In terms of wear, the gables, the trays to a lesser extent because they have more teeth, are subject to heavy wear due to their exposure to water, dust, mud, sand and other aggressions related to climatic conditions. The maintenance is constant because it is necessary to clean, dry, lubricate. In all cases, the links have rollers, seals, pins and abrasive particles necessarily accumulate and remain there, even with careful cleaning.
    [0003] 3037035 2 It also remains the fact that in the case of a bicycle equipped with several trays and several gears, two commands are required, one for each of the derailleurs, even if single-command dual controls have been imagined, without however take significant market shares.
    [0004] In operation, it should be noted that the derailleurs, receiving mud including the rear derailleur, may lock during use, not to mention the additional efforts required from the user because of the additional mechanical friction generated by the mud . Once oiled, projections of oil can occur from the chain on the bike 10 on the one hand and the user on the other hand. This oil is complex to choose: if it is too fluid, it penetrates well into the links, but it is projected and is quickly diluted by mud, water and operation. A mineral oil is suitable but once the diffusion solvent evaporated, it remains a very thin layer and lubrication is very limited so it is reserved for dry land.
    [0005] Oil too thick and sticky sticks on the links but it captures dust, mud and forms a paste that becomes more abrasive than lubricating. These derailleurs also require knowledge of the use and a novice rider can easily be put off by these shifters and other derailleur controls. An indisputable fact is that the chain transmission generates chain crossings, detrimental to the lifetime of the transmission components and generating unnecessary energy consumption. Therefore, care must be taken to maintain the best chain alignment throughout the operation. A disadvantage rarely mentioned is the number of useful ratios. In the case where we use for example 3 trays and a cassette of 11 gears, or 33 developments, we see that only 12 to 15 developments are actually available if it is desired to maintain a suitable chain alignment. However, we benefit from these developments through a very good practice and a very regular maneuver of the two orders in use. This shows that the known devices are of complex type and that it is necessary to find more suitable, simplified and reliable solutions. There is another way to have only useful developments, using a "gearbox". This is a sealed housing which contains gables in an oil bath, 3037035 3 able to cooperate with each other to vary the ratios under the action of a command. These pinions are integral with a shaft driven by an input pinion rotated by the power developed by the user and the pinion in turn drives a peripheral inner ring secured to the rear wheel.
    [0006] 5 This housing is waterproof and therefore not susceptible to external aggressions such as water, mud. The pinions only allow to reach a series of developments calculated and chosen by the user according to its power, its practice, its objectives. All that is needed is a single control carried over to the bicycle handlebar, the ratios can be modified even when stopped since there is no derailment caused so the transmission must not rotate to maneuver the control. . For practice, in a sense of maneuvering the control is increased developments, in the opposite direction, it reduces the developments, which is quite intuitive, making the use simple, fun, leaving the user all to his leisure of practice. The adjustments are made at the factory during manufacture, the wear is negligible in the case of a bicycle. Such products are available on the market, one of them is marketed under the trade name "Rohloff".
    [0007] There remains a fragility element of the hub-type transmission integrating the speeds, namely the transmission chain and the front plate. It is indeed only a plate and a chain that attacks the input gear of the gearbox, which also allows to solve the chain alignment that necessarily remains perfect. In order to overcome these disadvantages, the transmission chain which further optimizes the gearbox is replaced by a belt drive. The plate and pinion are of greater width, grooved and the chain is a notched belt, the notches of the belt cooperating with the grooves of the plate and pinion. This achieves a weight equivalent to a chain transmission. In this case, even in case of rain, mud, the belt is cleaned as the mud can not adhere to the notches of the belt, there is no wear as with links , the belt is guided, no lubrication necessary in addition to the advantages listed above related to the presence of the gearbox.
    [0008] As with the chains, there is nevertheless a problem related to the wear of the belt not because of mechanical wear by abrasion, but because said belt relaxes because the material of which it is constituted namely a Elastomer reinforced with a fiber frame, generally, also relaxes.
    [0009] External factors also lead to stretching the belt or adjusting its tension as a chain: the temperature, the mechanical actions related to the demands of the user. In any case, it is necessary to tension the belt initially, the first assembly, as and when wear and possibly, but not necessarily during disassembly of the wheel, because of a puncture for example, or d a tire change. The problem that arises in such an arrangement is the resumption of efforts in the context of the bike because it must be possible to adjust the tension of a chain or a belt but of course without losing the frame mechanical rigidity. It is recalled that the rear wheel axle is supported on each side at the point of intersection of the stay and the arm and that all the forces experienced or transmitted to the rear wheel pass through this point. Stresses, shocks, efforts of the cyclist and braking efforts are also meant. Furthermore, in the case of disk braking, this braking device must be supported by the device in order to be able to move according to the settings, in such a way that identical.
    [0010] The present invention provides an arrangement with a tension control device of a transmission member, chain or belt, associated with the frame of a transmission bicycle comprising a single pinion and a single plate, adapted to allow easy adjustment. , fast, effortless, precision. The device is now described with reference to the accompanying drawings, in which the various figures represent a particular, illustrative but nonlimiting arrangement for a transmission with a gearbox, to illustrate the invention, more particularly: 1: a perspective view of a belt transmission, with a gearbox, FIG. 2: a detailed perspective view of the rear fork, arms and stay cables receiving the adjustment device according to the present invention. Figures 3A and 3B: Inner and outer face views of the arrangement of the settings opposite to the drive pinion. FIGS. 4A and 4B are views on the outside and on the inside of the arrangement of the drive sprocket settings. FIG. 1 shows a transmission 10 with a front plate 12, a rear sprocket 14, a belt 16 of FIG. transmission with notches 18. The device would apply in the same way to the same chain transmission, to a single plate and pinion transmission and to a chain or belt or to a transmission to a plate, to a single stationary pinion and a chain or belt transmission member. The plate 12 and pinion 14 are known and have notches 20, 22 of profile conjugate that of the notches 18 of the belt so as to cooperate. The pinion 14 is integral with a drive shaft (not shown) of a gearbox 24 with gears, forming a hub and on the periphery of which are reported the spokes 26 of the rear wheel. This periphery is rotatable and driven by the internal gearbox gearbox. The frame of the bicycle comprises in a known manner and not shown, a front crankcase supporting cranks and the plate 12 and a shaft and a bottom bracket, well known to those skilled in the art.
    [0011] At the rear, as shown in FIG. 2, the rear fork 28 comprises two substantially horizontal arms 30-1 left and 30-2 right considering the direction of travel of the bicycle and two stay cables 32-1 left and 32- 2 right. These two pairs of arms and shrouds intersect a point of common intersection with the axis of the rear wheel as will be explained below.
    [0012] The device according to the present invention comprises a first connecting piece 34-1, reported or manufactured with the rear fork 28, FIGS. 3A and 3B. This connecting piece 34-1 is secured to the arm 30-1 and the stay 32-1. It is she who constitutes the point of intersection. This connecting piece 34-1 comprises two slots 35-1, 35-2 oblong, oriented substantially along the axis passing through the bottom bracket axis and the rear wheel axle. These lights form slides. The term "substantially" is used in the present case because there are bicycles, for example suspended at the rear, with a displacement and the arrangement of the holes 3037035 6 remains constant but the inclination of the axis passing through the axis bottom bracket and the rear wheel axle changes with the actions of the suspension but the angular variations are extremely limited hence the use of the term "substantially". The connecting piece 34-1, integral with the arms 30-1 and 32-1 stay, receives an insert 36-1 which is removable and which constitutes a separate piece. This connecting piece comprises a blind housing 38-1 provided to receive a first end of the rear wheel axis XX ', which axis passes through the gearbox 24, generally through the drive shaft of said housing. This blind housing is oriented downwards, to naturally come to bear on said axis XX 'wheel by the housing bottom. Blocking means either by nut or by quick-locking pin provide fixation on these tabs. One of the inserts, in this case the left insert 36-1, is equipped with tabs 40 intended to receive a stirrup of a disc brake, not shown, said disc being itself secured to the movable part of the housing of gearshift, therefore of the wheel, this in a known manner and passing through the brake caliper. This insert 36-1 also comprises two threads 41-1 and 41-2 intended to each receive a screw 42-1 and 42-2 clamping, each of said screws previously passing through the slots 35 oblong. These threads are positioned very specifically and the axis YY 'passing through the two threads must be substantially oriented towards the front, as shown in the drawings substantially along the median axis between the vertical and the pedaling axis which corresponds to the straight line connecting the crank axle and the rear wheel axle. Thus the upper thread is upstream of the lower thread. Translation means 44-1 are interposed between the connecting piece 34-1 and the insert 36-1. These means comprise a screw 46-1 mounted screwing into the connecting piece 34-1 and bearing on the insert 36-1. The translation axis of the translation adjustment means 44-1 is parallel to the axis of the oblong slots 35-1 and 35-2. A second connecting piece 34-2 is attached or manufactured with the rear fork 28, right side, see FIGS. 4A and 4B, in addition to FIG. 2. This connecting piece 34-2 is integral with the arm 30. -2 and 32-2 stay cable.
    [0013] This connecting piece 34-2 comprises two slots 35-3 and 35-4 oblong, oriented substantially along the axis passing through the bottom bracket and the rear wheel axle. These lights form slides. The term "substantially" is used in the present case because there are bicycles, for example suspended at the rear, with a displacement and the arrangement of the holes 5 remains constant but the inclination of the axis passing through the axis of crankset and the rear wheel axle changes with the actions of the suspension but the angular variations are extremely limited hence the use of the term "substantially". The connecting piece 34-2 receives an insert 36-2 comprising a blind housing 38-2 designed to receive the other end of the wheel axle XX 'which passes through the gear change housing 24, generally through the housing. drive shaft of said housing. A nut is disposed on the end of the axis XX 'to ensure clamping. A quick-clamping rod may also be arranged to clamp as previously indicated. This blind housing 38-2 is oriented downwards, to come naturally bearing on said wheel axle by the housing bottom, under the effect of the weight of the bike and the user, as the housing 38-1. This insert 36-2 also includes two threads 41-3 and 41-4 intended to each receive a screw 42-3 and 42-4 clamping, each of said screws previously passing into the slots 35-3 and 35-4 oblong, forming slides. Means 44-2 for translational adjustment are interposed between the connecting piece 34-2 and the insert 36-2. These means comprise a screw 46-2 mounted to screw into the connecting piece 34-2 and resting on the insert. The translation axis of the translation adjustment means 44-2 is parallel to the axis of the oblong 35-3, 35-4 slots. According to the arrangement of the invention, the two inserts 36-1 and 36-2 can be moved in translation by screwing or unscrewing each of the screws 46-1 and 46-2 after having loosened the tightening screws 42. The displacement in translation makes it possible to adjust the tension of the belt by maneuvering these screws since the plate is fixed in translation, so the recoil of the wheel axle XX 'ensures a tension of the transmission belt.
    [0014] The material used may vary depending on requirements, eg light aluminum or titanium metal for example or based on a charged polymer to impart the required mechanical properties.
    [0015] 3037035 8 This arrangement makes it possible to perform an adaptive mounting and to adjust the voltage without bringing heavy and poorly integrated parts. In the embodiment shown, the protruding parts are very limited, which is sought after and appreciable particularly in mountain biking.
    [0016] 5 The device is applicable to bicycles using a belt transmission with a gearshift built into the hub of the rear wheel, intended for the city in the same way as the practice of any road or any terrain. Note that the mechanical strength of the frame is perfectly preserved despite the presence of moving parts both inserts 34-1 and 34-2.
    [0017] The rigidity of the frame is not sacrificed while providing a precise adjustment of the tension of the transmission member, chain or belt on a bicycle. The present invention has a significant advantage in maintaining the adjustment voltage, including when the wheel is disassembled during a simple puncture, for example, most of the time.
    [0018] When disassembling the wheel, in most cases, depending on the tension and the geometry of the arms, the axis XX 'goes down and leaves the housing 38-1, 38-2 downwards without having to unscrew the screws 42-1 to 42-4 to move the inserts 36-1, 36-2. The reassembly is done in the same way and the setting is not to be redone. The above description has been made for a belt and a notched wheel / gear assembly, but the same is true for a chain and chain / sprocket transmission. Similarly, the description was established in the case of a frame having a rear fork with an arm and a stay but there are rear forks with a single right arm and a left single arm, without shroud, also called "banana fork" ". It should be understood that the adjustment arrangement with a connecting piece and an insert on each side according to the present invention is naturally applicable to this particular type of fork. The mechanical forces are transmitted in the plane of the right and left sets guy / arm and the inserts are housed in the connecting pieces with two attachment points that lead to a rigidity quite suitable.
    权利要求:
    Claims (6)
    [0001]
    REVENDICATIONS1. Device for adjusting the tension of a transmission member (10) at the rear wheel of a bicycle, comprising a front plate (12), a rear pinion (14), a belt (16) or a transmission chain, a fork rear support wheel XX 'rear wheel, characterized in that this adjusting device comprises two pieces (34-1, 34-2) connection, right and left, reported or manufactured with the rear fork (28). , two inserts (36-1, 36-2) right and left mounted on said connecting pieces (34-1, 34-2) and provided with housings (38-1, 38-2) blind, provided to receive the ends wheel axle XX 'and translational adjustment means (44-1, 44-2) interposed respectively between said connecting pieces (34-1, 34-2) and said inserts (36-1, 36-). 2).
    [0002]
    2. Device for adjusting the tension of a member (10) for transmitting to the rear wheel of a bicycle, according to claim 1, characterized in that the means (44-1, 44-2) of adjustment in translation comprise each a screw (46-1, 46-2) interposed respectively between the piece (34-1, 34-2) connecting and the insert (36-1, 36-2) corresponding.
    [0003]
    3. Device for adjusting the tension of a transmission member (10) for transmitting to the rear wheel of a bicycle, according to claim 1 or 2, characterized in that the connecting pieces (34-1, 34-2) comprise each respectively two slots (35-1, 35-2; 35-3, 35-4) oblong, oriented substantially along the axis passing through the crank axle and the rear wheel axle, said lights forming slides and screw (42-1 to 42-4) adapted to screw into threads (41-1 to 41-4) formed in the inserts (36-1, 36-2).
    [0004]
    4. Device for adjusting the tension of a transmission member (10) for transmitting to the rear wheel of a bicycle according to any one of the preceding claims, characterized in that the blind housings (38-1, 38-2), provided to receive the ends of the wheel axle XX 'are oriented downwards.
    [0005]
    5. Device for adjusting the tension of a transmission member (10) to the rear wheel of a bicycle according to any one of the preceding claims, characterized in that one of the inserts (36-1) carries legs (40) mounting a caliper of a disc brake.
    [0006]
    6. Device for adjusting the tension of a transmission member (10) to the rear wheel of a bicycle according to any one of the preceding claims, characterized in that the transmission member (10) comprises a plate (12). ) with notches (20), a pinion (14) with notches (22) and a transmission belt (16) provided with notches (18) of profile 3037035 conjugates notches (20, 22) of the plate and pinion thus a gearbox (24) with gear change.
    类似技术:
    公开号 | 公开日 | 专利标题
    EP0727348B1|2003-10-22|Method of determining the transmission ratios for a bicycle chain shifter and shift device for implementing the ratios thus determined
    EP0217842B1|1990-01-24|Crank-gear for bicycle or similar locomotion vehicle
    EP1035997B1|2002-06-12|Crankset without dead centre point, and assembly comprising such a crankset and a measuring appliance
    EP3100939A1|2016-12-07|Device for adjusting the tension of a belt drive, in particular for use in a bicycle
    EP1961651B1|2009-11-18|Bicycle crankset with double chain wheels
    EP0803464B1|2000-11-02|Transfer device, in particular for pedestrians, positioned between two transporting elements placed one after the other and carrier provided with such a device
    EP0907550B1|2000-05-17|Tension and guiding device of a chain for bicycle change speed gear
    EP2046630A1|2009-04-15|Braking device for a rimmed wheel, particularly for a bicycle wheel
    FR2501124A1|1982-09-10|Bicycle wheel hub assembly - carries chain sprocket on ring which is detachable from hub using stub axles threaded into ferrule
    FR2658152A1|1991-08-16|PROPULSION DEVICE FOR TWO - DRIVE BICYCLE AND BICYCLE PROVIDED WITH THIS DEVICE.
    FR2918957A1|2009-01-23|Transmission system's i.e. gearbox, mechanical speed changing device for e.g. road bicycle, has movement transformation units transforming rotational movement of crank of bicycle into traction or releasing force of cables of derailleurs
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    WO2017174617A1|2017-10-12|Cycle crankset with self-positioned floating chainring
    WO1996025321A1|1996-08-22|Bicycle development selection method with proper chain alignment, and selection device therefor
    FR2637250A1|1990-04-06|Speed variator for a cycle
    EP1144243A1|2001-10-17|Cycle gear-shift device
    FR2724903A1|1996-03-29|Gearbox for aligned shafts, used for bicycles
    FR3095801A1|2020-11-13|Movable plate crankset
    FR2650580A3|1991-02-08|MANUAL HOIST
    FR2758519A3|1998-07-24|Calliper bicycle brakes
    FR3066470A1|2018-11-23|DEVICE FOR CONTROLLING CHAIN TRANSMISSION
    FR2807730A1|2001-10-19|Bicycle with rear suspension has chain guide pulley with side flanges defining guide groove for chain
    FR2709467A1|1995-03-10|Gear change mechanism with gearing, which can be fitted directly to an ordinary bicycle to the hub of the pedal and bottom bracket assembly
    同族专利:
    公开号 | 公开日
    EP3100939A1|2016-12-07|
    FR3037035B1|2018-09-07|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US20090236819A1|2008-03-19|2009-09-24|Frank Scurlock|Bicycle drop out|
    JP2013252784A|2012-06-06|2013-12-19|Bridgestone Cycle Co|Rear end and bicycle using the same|
    US20140054873A1|2012-07-24|2014-02-27|Chris Cocalis|Removable dropouts for bicycle frame|USD929268S1|2019-08-20|2021-08-31|Serial 1 Cycle Company, Llc|Bicycle|
    CN111762279A|2019-04-01|2020-10-13|堤麦策略行销有限公司|Bicycle rear fork|
    GB2586138A|2019-08-06|2021-02-10|Karbon Kinetics Ltd|Belt drive pedal cycle with side mounted wheels|
    法律状态:
    2016-06-30| PLFP| Fee payment|Year of fee payment: 2 |
    2016-12-09| PLSC| Publication of the preliminary search report|Effective date: 20161209 |
    2017-09-28| PLFP| Fee payment|Year of fee payment: 3 |
    2018-06-27| PLFP| Fee payment|Year of fee payment: 4 |
    2020-06-24| PLFP| Fee payment|Year of fee payment: 6 |
    2021-06-30| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1555053A|FR3037035B1|2015-06-03|2015-06-03|DEVICE FOR ADJUSTING THE VOLTAGE OF A BELT TRANSMISSION, IN PARTICULAR FOR AN APPLICATION TO A BIKE|
    FR1555053|2015-06-03|FR1555053A| FR3037035B1|2015-06-03|2015-06-03|DEVICE FOR ADJUSTING THE VOLTAGE OF A BELT TRANSMISSION, IN PARTICULAR FOR AN APPLICATION TO A BIKE|
    EP16171974.5A| EP3100939A1|2015-06-03|2016-05-30|Device for adjusting the tension of a belt drive, in particular for use in a bicycle|
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