Patent Grant
9071027
The present invention refers, in general, to the technical field of manual bicycle gearshift control devices. More specifically, the present invention refers to a command inverter for a manual bicycle gearshift control device of the bar-end type.
A motion transmission system in a bicycle comprises a chain extended between toothed wheels associated with the axle of the pedal cranks and with the hub of the rear wheel. When there is more than one toothed wheel at at least one between the axle of the pedal cranks and the hub of the rear wheel, and the motion transmission system is therefore equipped with a gearshift, a front derailleur and/or a rear derailleur is provided. In the case of an electronically servo-assisted gearshift, each derailleur comprises a chain guide element, also known as cage plate, which is movable to move the chain between the toothed wheels in order to vary the transmission ratio, and an electromechanical actuator to move the chain guide element. Typically, the actuator in turn comprises a motor, typically an electric motor, coupled with the chain guide element by means of a linkage such as an articulated parallelogram, a rack system or a worm screw system, as well as a position, speed and/or acceleration sensor of the rotor or of any mobile part downstream of the rotor, up to the chain guide element itself. It is worth emphasising that slightly different terminology from that used in this context is also in use.
A control electronics varies the transmission ratio based on commands manually entered by the cyclist by mean of suitable control devices, for example a lever and/or buttons and/or based on automatically entered commands or, as far as the invention is concerned, semi-automatically entered commands. In case of automatically or semi-automatically entered commands, the control electronics establishes—typically based on the outputs of sensors of the travel parameters—such as the travel speed, the rotation speed of the pedal cranks, the slope of the travel ground, the heart rate of the cyclist and similar—when it is suitable to change transmission ratio and automatically generates signals requesting movement of the derailleur (automatic operation) or performs a supervision/integration of the cyclist's requests, preventing them, bypassing them, delaying them and/or integrating them with automatically generated requests, or vice-versa proposing such requests to the cyclist that in any case has the option of bypassing them (semi-automatic operation).
It is well known that for bicycles intended for racing there is a constant search for solutions to improve performance. In particular, for bicycles intended for speed races, such as typically time trials, a good aerodynamic configuration of all of the bicycle components is particularly important. Moreover, a factor for improving performance is considered to be the efficiency of all of the controls, but also how safe and easy they are to actuate, in that the cyclist is able to concentrate on the physical effort without obstacles due to difficulties in actuating the controls.
Recently, specialised handlebars for speed races have become popular, which have two or four bars or ends facing markedly forwards, which allow the cyclist to maintain a position of the torso greatly inclined forwards, which is aerodynamically efficient.
With these handlebars, specific control devices have also become well-established, both for the brakes and for the gearshift; these devices are commonly called bar-end devices since they are housed right at the ends of the handlebars, so that the cyclist can actuate them easily without having to change his position.
As mentioned before, manual bicycle gearshift control devices of the bar-end types comprise lever control devices and button control devices.
A lever-operated manual control device of the bar-end type comprises an assembly portion suitable for being mounted at the end of a handlebars facing forwards in the travel direction of the bicycle, a control lever projecting forwards from the assembly portion of the manual control device in the travel direction of the bicycle and means for imparting at least one control signal, typically comprising a pair of switches actuated by the lever. The control signals are transmitted to an electronic gearshifting control unit through a multiconductor cable.
Typically, the lever is angularly mobile with respect to the assembly portion between an intermediate neutral position, in which no gearshifting is commanded, and two operative positions, typically a raised operative position, in which an upward gearshifting is commanded, i.e. a movement of the chain, carried out by the rear or front derailleur, respectively, onto a toothed wheel of greater diameter with respect to the one currently engaged by the chain, and a lowered operative position, in which a downward gearshifting is commanded, i.e. a movement of the chain, carried out by the rear or front derailleur, respectively, onto a toothed wheel of smaller diameter with respect to the one currently engaged by the chain.
A button-operated manual control device of the bar-end type comprises an assembly portion suitable for being mounted at the end of the handlebars, a pair of buttons projecting from the assembly portion and means for imparting an electrical control signal, typically comprising a pair of switches actuated by the buttons. Also in this case, signals are transmitted to an electronic gearshifting control unit through a multiconductor cable. In particular, by acting on the upper button, the cyclist commands an upward gearshifting and by acting on the side button he commands a downward gearshifting.
It is also possible to use the lever/button to impart a command to change a transmission ratio, the electronic control unit providing for transforming the command into a gearshifting command of the rear and/or front derailleur.
Both with the lever-operated manual control device and with the button-operated manual control device, the electronic gearshifting control unit comprises an interface, in electrical connection with the switches of the control devices mounted on the right and left of the handlebars, and a power system in electrical connection with the interface. The interface is suitable for receiving, through the multiconductor cable, upward and downward gearshifting control signals imparted by the switches of the pair of gearshift control devices and for transmitting them to the power system that, as a function of the gearshifting control signal received, actuates the respective actuator of the rear and/or front wheel, so as to move the motion transmission chain on the toothed wheels associated with the axle of the pedal cranks and with the hub of the rear wheel, so as to establish the transmission ratio selected by the cyclist, thus carrying out the gearshifting.
Both with the lever-operated manual control device and with the button-operated manual control device it is possible to provide other switches, for example a switch for a so-called MODE command, operated by a lever or by a button, for selecting an operating mode selected from normal travel, setting of gearshift parameters etc., and/or a switch for a so-called SET command, for selecting a value of the selected gearshift parameters.
In the typical configuration (hereafter “standard”) of a handlebars equipped with manual bicycle gearshift control devices of the bar-end type, the right device controls upward and downward gearshifting in the rear derailleur, whereas the left device controls upward and downward gearshifting in the front derailleur.
If a cyclist wishes to perform an upward gearshifting of the rear derailleur, he must lift the lever, or correspondingly press the upper button, of the manual gearshift control device mounted on the right of the handlebars, thus activating the respective switch. An upward gearshifting signal of the rear derailleur is thus generated, which is transmitted, through the multi-conductor cable, to the interface and from this to the power system of the electronic gearshifting control unit. The power system, in turn, actuates the actuator of the rear derailleur so as to move the chain onto a toothed wheel of greater diameter among the toothed wheels associated with the hub of the rear wheel.
Differently, if a cyclist wishes to perform a downward gearshifting of the rear derailleur, he must lower the lever, or correspondingly press the side button, of the manual gearshift control device mounted on the right of the handlebars, thus activating the respective switch. A downward gearshifting signal of the rear derailleur is thus generated, which is transmitted, through the multi-conductor cable, to the interface and from this to the power system of the electronic gearshifting control unit. The power system, in turn, actuates the actuator of the rear derailleur so as to move the chain onto a toothed wheel of smaller diameter.
Similarly, if a cyclist wishes to perform an upward gearshifting of the front derailleur, he must lift the lever, or correspondingly press the upper button, of the manual gearshift control device mounted on the left of the handlebars, thus activating the respective switch. An upward gearshifting signal of the front derailleur is thus generated, which is transmitted, through the multi-conductor cable, to the interface and from this to the power system of the electronic gearshifting control unit. The power system, in turn, actuates the actuator of the front derailleur so as to move the chain onto a toothed wheel of greater diameter among the toothed wheels associated with the axle of the pedal cranks.
Finally, if a cyclist wishes to perform a downward gearshifting of the front derailleur, he must lower the lever, or correspondingly press the side button, of the manual gearshift control device mounted on the left of the handlebars, thus activating the respective switch. A downward gearshifting signal of the front derailleur is thus generated, which is transmitted, through the multi-conductor cable, to the interface and from this to the power system of the electronic gearshifting control unit. The power system, in turn, actuates the actuator of the front derailleur so as to move the chain onto a toothed wheel of smaller diameter.
The Applicant has now realised that a cyclist could wish to have inverted gearshifting commands, due to personal preference, due to physical characteristics, for example left or right-handed cyclist, and/or due to particular requirements, for example associated with riding style, in particular with the aerodynamic position taken up during a time trial in the case of gearshift control devices of the bar-end type.
More specifically, a cyclist could wish to command upward gearshifting by lowering, instead of lifting, the lever, or by pressing the side button, instead of the upper button, of the manual gearshift control device and to command downward gearshifting by lifting, instead of lowering, the lever, or by pressing the upper button, instead of the side button, of the manual gearshift control device.
Furthermore, the cyclist could wish to use the manual gearshift control device, operated by a lever or buttons, mounted on the right of the handlebars to command upward gearshifting both of the front derailleur and of the rear derailleur and to use the manual gearshift control device, operated by a lever or buttons, mounted on the left of the handlebars to command downward gearshifting both of the front derailleur and of the rear derailleur, or vice-versa.
Furthermore, other configurations of inversion or variation of the controls may be desirable, for example inversions between the upward and/or downward gearshifting controls and the MODE and/or SET commands defined above.
Also in the case of a control device not of the bar-end type, the cyclist could have a reason to wish to vary the gearshifting commands imparted with each lever/button.
The technical problem forming the basis of the present invention is, therefore, to allow the cyclist to personalise the generation, by means of manual control devices, of upward and downward gearshifting controls of the rear and/or front derailleur of the bicycle based on his preferences and/or needs, thus ensuring a high versatility in use of the control devices themselves.
In a first aspect thereof, the present invention relates to a command inverter according to claim 1; preferred characteristics are given in the dependent claims. The invention also relates to a kit of parts comprising at least one command inverter according to the invention and possibly at least one gearshift control device according to claim 14.
More specifically, the command inverter for at least one bicycle gearshift control device comprises:
Preferably, at least one electrical termination of the first interface is electrically connected to a corresponding electrical termination of the second interface.
Preferably, said at least one electrical termination of the first interface that is not electrically connected to a corresponding electrical termination of the second interface comprises a subplurality of electrical terminations of the first interface that are electrically connected to a corresponding subplurality of electrical terminations of the second interface. Preferably, said subplurality of electrical terminations of the first interface and said subplurality of electrical terminations of the second interface each comprise a pair of electrical terminations.
In an embodiment, said first interface is configured to couple with a connector of the electronic gearshifting control unit and said second interface is configured to couple with a connector of one manual gearshift control device, wherein said connector of the electronic gearshifting control unit is configured to couple with said connector of the manual control device when the command inverter is not arranged between them.
Preferably, said at least one electrical termination of the first interface that is not electrically connected to a corresponding electrical termination of the second interface comprises a third and fourth electrical terminations, said third electrical termination of the first interface being connected to a fourth electrical termination of the second interface through a third conductive means and said fourth electrical termination of the first interface being connected to a third electrical termination of the second interface through a fourth conductive means.
In an embodiment, the electrical terminations of said first interface are housed in a first main body, the electrical terminations of said second interface are housed in a second main body and in a possible third main body and the electrical terminations of the first and second interface are connected through conducting wires of a multiconductor cable, possibly branched.
In an embodiment, the electrical terminations of said first and second interface are housed at distinct faces of a container body and the electrical terminations of the first and second interface are connected through conductive rods or foils extending within the container body.
In an embodiment, said first interface is configured to couple with a first and second connector of the electronic gearshifting control unit and said second interface is configured to couple with a connector of a right manual control device and with a connector of a left manual control device, wherein said first and second connector of the electronic gearshifting control system are configured to couple with said connector of the right manual control device and with said connector of the left manual control device when the command inverter is not arranged between them.
In an embodiment, a first subplurality of electrical terminations of said first interface is configured to couple with a first connector of the electronic gearshifting control unit, a second subplurality of electrical terminations of said first interface is configured to couple with a second connector of the electronic gearshifting control unit, a first subplurality of electrical terminations of the second interface is configured to couple with a connector of a right manual control device and a second subplurality of electrical terminations of the second interface is configured to couple with a connector of a left manual control device.
Preferably, said at least one electrical termination of the first interface that is not electrically connected to a corresponding electrical termination of the second interface comprises at least one electrical termination of the first subplurality of electrical terminations of the first interface that is electrically connected to at least one electrical termination of the second subplurality of electrical terminations of the second interface and at least one electrical termination of the second subplurality of electrical terminations of the first interface that is electrically connected to at least one electrical termination of the first subplurality of electrical terminations of the second interface.
Preferably, at least one electrical termination of the first subplurality of electrical terminations of the first interface is electrically connected to at least one electrical termination of the first subplurality of electrical terminations of the second interface and at least one electrical termination of the second subplurality of electrical terminations of the first interface is electrically connected to at least one electrical termination of the second subplurality of electrical terminations of the second interface.
Preferably, said electrical terminations comprise a fourth and a seventh electrical termination, said fourth electrical termination of the first interface being connected to a seventh electrical termination of the second interface through a fourth conductive means and said seventh electrical termination of the first interface being connected to a fourth electrical termination of the second interface through a seventh conductive means.
In an embodiment, the electrical terminations of said first interface are housed in a first main body and in a second main body, the electrical terminations of said second interface are housed in a third main body and in a fourth main body and the electrical terminations of the first and second interface are connected through a printed circuit board connected to said main bodies through respective multiconductor cables.
Preferably, said electrical terminations of the first interface are male electrical terminations and said electrical terminations of the second interface are female electrical terminations.
Preferably, said plurality of electrical terminations of the first interface and said plurality of electrical terminations of the second interface are arranged in the respective interfaces so as to univocally define the correspondence among the electrical terminations of the first interface and the electrical terminations of the second interface.
Preferably, said plurality of electrical terminations of the first interface and said plurality of electrical terminations of the second interface are arranged in a respective shaped portion of at least one main body so as to univocally define the correspondence among the electrical terminations of the first interface and the electrical terminations of the second interface.
Preferably, said connectors are of the removable type, so as to allow the inverter to be interposed, or not, in a particularly easy manner.
In a second aspect thereof, the invention relates to a kit of parts comprising at least one command inverter indicated above and optionally one or two manual gearshift control devices.
Preferably, said gearshift control devices are control devices of the bar-end type.
In the rest of the present description and in the following claims, an electrical termination is defined as matching another electrical termination if the two electrical terminations have shapes such as to allow a shape coupling therebetween, for example a pair of male and female electrical terminations. Matching must not however be taken in the sense that matching electrical terminations are in use coupled together, which is actually not the case. The electrical terminations of the first interface and the electrical terminations of the second interface are matching to adapt to the electrical terminations, matching one another, of the CPU and of the control devices between which the command inverter is arranged.
In the rest of the present description and in the following claims, a termination of an interface is defined as corresponding to a termination of another interface if it occupies in the interface of which it is part and relative to the other terminations of such an interface, the same position that the termination of the other interface occupies in the other interface relative to the remaining terminations of the other interface.
In the rest of the present description we will refer to a command inverter for bicycle gearshift control devices of the bar-end type, but it should be understood that the command inverter of the invention is equally applicable to gearshift control devices mounted on a conventional handlebars.
Further characteristics and advantages of the invention will become clearer from the following detailed description of preferred embodiments thereof, made with reference to the attached drawings. In such drawings:
The command inverter 1 comprises a first interface 2 for electrical connection to an electronic gearshifting control unit CPU (
In particular, the first interface 2 of the command inverter 1 is formed in a first main body 3, preferably substantially cylindrical, in which a plurality of electrical terminations is housed. In the illustrated embodiment there are a first, a second, a third and a fourth electrical termination 2G, 2M, 2U, 2D, suitable for electrically coupling in a removable manner with corresponding first, second, third and fourth matching electrical terminations, 80G, 80M, 80U, 80D, respectively, of a connector 80 associated with an interface I of the electronic control unit CPU (
The electrical terminations 2G, 2M, 2U, 2D are distributed in the first interface 2 of the command inverter 1 according to a univocal coupling configuration with the corresponding matching terminations 80G, 80M, 80U, 80D of the connector 80. In other words, each electrical termination 2G, 2M, 2U, 2D of the first interface 2 can be coupled only with the corresponding matching electrical termination 80G, 80M, 80U, 80D of the connector 80.
In the illustrated embodiment, the electrical terminations 2G, 2M, 2U, 2D are male electrical terminations and the matching and corresponding electrical terminations 80G, 80M, 80U, 80D are female electrical terminations, but of course, in a totally equivalent way, it is possible to provide female electrical terminations 2G, 2M, 2U, 2D and male electrical terminations 80G, 80M, 80U, 80D. The configuration shown may be preferable to avoid exposed male contacts on the electronic control unit CPU.
The second interface 4 of the command inverter 1 comprises a main body 7, also preferably substantially cylindrical, in which a plurality of electrical terminations is housed. In the illustrated embodiment, there are a first, a second, a third and a fourth electrical termination, 4G, 4M, 4U, 4D, respectively, suitable for electrically coupling in a removable manner with corresponding matching first, second, third and fourth electrical terminations, 90G, 90M, 90U, 90D, respectively, of a connector 90 associated with the device 30d, 30s for actuating the gearshift of a bicycle (
The electrical terminations 4G, 4M, 4U, 4D are distributed on the second interface 4 according to a univocal coupling configuration with the corresponding matching terminations 90G, 90M, 90U, 90D of the connector 90. In other words, each electrical termination 4G, 4M, 4U, 4D of the second interface 4 can be coupled only with the corresponding electrical termination 90G, 90M, 90U, 90D of the connector 90.
In the illustrated embodiment the electrical terminations 4G, 4M, 4U, 4D are female electrical terminations and the matching and corresponding electrical terminations 90G, 90M, 90U, 90D are male electrical terminations, but of course, in a totally equivalent way, it is possible to provide male electrical terminations 4G, 4M, 4U, 4D and female electrical terminations 90G, 90M, 90U, 90D.
The univocal coupling between terminations 2G, 2M, 2U, 2D of the first interface and matching and corresponding terminations 80G, 80M, 80U, 80D of the connector 80 and between terminations 4G, 4M, 4U, 4D of the second interface and matching and corresponding terminations 90G, 90M, 90U, 90D of the connector 90 can be obtained by means of the geometrical arrangement, for example asymmetric as shown in
It should also be noted that the connectors 80 and 90 have matching and corresponding terminations, 80G, 80M, 80U, 80D and 90G, 90M, 90U, 90D, respectively, which are suitable for univocally coupling when the command inverter 1 is not arranged between the gearshifting control device 30d, 30s and the electronic gearshifting control unit CPU of the bicycle.
Preferably, at the first interface 2 the main body 3 has an engagement element, for example a seat 12, suitable for cooperating with a corresponding engagement element, for example a tooth 82, provided in the connector 80 of the electronic gearshifting control unit CPU, to block the first interface 2 and the connector 80 in their connected configuration and contribute to define the univocity of coupling between interface and connector.
Similarly, at the second interface 4 the main body 7 preferably has an engagement element, for example a tooth 14, suitable for cooperating with a corresponding engagement element, for example a seat 94, provided in the connector 90 to block the second interface 4 and the connector 90 in their connected configuration and contribute to define the univocity of coupling between interface and connector.
In general, although tooth and seat coupling elements have been illustrated, the present invention allows any mode of coupling that requires a minimal predetermined force to separate the command inverter 1 from the connectors 80 and 90.
The terminations 2G, 2M, 2U, 2D of the first interface 2 and the terminations 4G, 4M, 4U, 4D of the second interface 4 are electrically connected together by means of the electrical multiconductor cable 6, comprising, in the illustrated embodiment, a first, a second, a third and a fourth conducting wire, 6G, 6M, 6U, 6D, respectively. Each conducting wire 6G, 6M, 6U, 6D can comprise a plurality of strands.
Preferably, each conducting wire 6G, 6M, 6U, 6D of the multiconductor cable 6 is coated by a respective first insulating sheath (not shown) and the conducting wires 6G, 6M, 6U, 6D thus coated are in turn wholly coated by an insulating sheath 16 to form the multiconductor cable 6.
In particular, and with reference to
The first conducting wire 6G is the earth conducting wire; in use, an electric MODE/SET signal sM for selecting an operating mode selected from normal travel, setting of gearshift parameters (MODE) and/or for selecting a value of the selected gearshift parameters (SET) between the control device 30d, 30s and the electronic control unit CPU (
It results that the first and second conducting wire 6G and 6M of the multiconductor cable 6 electrically connect together matching and corresponding electrical terminations 2G-4G and 2M-4M of the first and second interface 2 and 4 of the command inverter 1. Differently, the third and fourth conducting wire 6D and 6U of the multiconductor cable 6 electrically connect together matching and not corresponding electrical terminations 2D-4U and 2U-4D of the first and second interface 2 and 4 of the command inverter 1. Therefore, the electrical terminations 2D and 2U of the first interface 2 are not electrically connected to matching and corresponding electrical terminations of the second interface 4.
Thanks to such an inversion of electrical connection between pairs of electrical terminations of the two interfaces, an inversion is obtained between the upward and downward gearshifting controls of the rear or front derailleur of the bicycle, as will become clearer hereafter. In other words, when the cyclist lifts the lever, for example of the gearshift control device 30d, mounted on the right of the handlebars, he commands downward gearshifting, instead of upward gearshifting, as would usually be the case, of the rear derailleur and vice-versa, when he lowers the lever, he commands upward gearshifting, instead of downward gearshifting, as would usually be the case, of the rear derailleur. The same applies to the gearshift control device 30s mounted on the left of the handlebars, which commands gearshifting of the front derailleur. There is a similar inversion in the case of button-operated control devices.
The command inverter, indicated in general with reference numeral 10, comprises a container body 70, preferably substantially cylindrical, suitable for housing electrical terminations 20G, 20M, 20U, 20D and 40G, 40M, 40U, 40D, respectively, of a first interface 20 for electrical connection to an electronic gearshifting control unit CPU (
The first and second interface 20 and 40 are electrically connected through a plurality of conductive rods or foils, in particular a first, a second, a third and a fourth conductive rod, 60G, 60M, 60U, 60D, respectively, housed within the container body 70 and preferably co-moulded with the plastic material of the container body 70. Preferably, the electrical terminations are directly formed at the ends of the rods.
In particular, in the first interface 20 a plurality of electrical terminations 20G, 20M, 20U, 20D are present. In the illustrated embodiment, a first, a second, a third and a fourth electrical termination 20G, 20M, 20U, 20D are provided, suitable for electrically coupling with corresponding matching electrical terminations 80G, 80M, 80U, 80D of the connector 80 (
As for the command inverter 1 of
In the second interface 40 a plurality of electrical terminations are present. In the illustrated embodiment, a first, a second, a third and a fourth electrical termination 40G, 40M, 40U, 40D are provided suitable for electrically coupling with corresponding matching electrical terminations 90G, 90M, 90U, 90D of the connector 90 (
As for the command inverter 1 of
The univocal coupling between terminations 20G, 20M, 20U, 20D of the first interface and the matching and corresponding terminations 80G, 80M, 80U, 80D of the connector 80 and between terminations 40G, 40M, 40U, 40D of the second interface 40 and the matching and corresponding terminations 90G, 90M, 90U, 90D of the connector 90 can be obtained by the geometric arrangement, for example asymmetric as shown in
Preferably, at the first interface 20, the container body 70 has an engagement element, for example a seat 22, suitable for cooperating with the tooth 82 (
Similarly, at the second interface 40 the container body 70 preferably has an engagement element, for example a tooth 44, suitable for cooperating with the seat 94 (
Similarly to what has been described for the command inverter 1 and with reference to
With reference back to
Also in this embodiment, the conductive rods 60G and 60M electrically connect together matching and corresponding electrical terminations 20G-40G and 20M-40M of the first and second interface 20 and 40 of the command inverter 10. Differently, the conductive rods 60D and 60U connect together matching and not corresponding electrical terminations 20D-40U and 20U-40D of the first and second interface 20 and 40 of the command inverter 10. Therefore, the electrical terminations 20D and 20U of the first interface 20 are not electrically connected to matching and corresponding electrical terminations of the second interface 40.
Thanks to such an inversion of connection between pairs of electrical terminations of the two interfaces 20 and 40, an inversion is obtained between the upward and downward gearshifting controls of the rear or front derailleur of the bicycle.
With reference to
Nevertheless, it should be understood that what has been described and illustrated with reference to the command inverter 1 of
As stated before, in the standard configuration of a handlebars, the right control device 30d is suitable for controlling upward and downward gearshifting of the rear derailleur of the bicycle, whereas the left control device 30s is suitable for controlling upward and downward gearshifting of the front derailleur of the bicycle.
Each control device 30d, 30s comprises an assembly portion 32d and 32s suitable for being mounted at the end of handlebars for bar-end controls facing forwards in the travel direction of the bicycle, a control lever 34d and 34s projecting forwards from the assembly portion of the control device in the travel direction of the bicycle and electrical actuation means, typically a pair of switches (not shown) and a connector 90 for connecting to an electronic gearshifting control unit CPU, the connector being mounted at the end of a multiconductor cable 36d, 36s.
Preferably, each control device 30d, 30s can also provide a switch (not shown) for so-called MODE command, controlled by a lever or by a button (not shown), for selecting an operating mode selected from normal travel, setting of gearshift parameters etc, and/or a switch for so-called SET command for selecting a value of the selected gearshift parameters.
The electronic gearshifting control unit CPU comprises an interface I, in electrical connection with the switches of the control devices 30d, 30s mounted on the right and left of the handlebars, and a power system SP in electrical connection with the interface I. The interface I is suitable for receiving upward and downward gearshifting control signals imparted through the switches of the pair of control devices 30d, 30s and for transmitting them to the power system SP that, as a function of the gearshifting control signal received, actuates a respective actuator AR and AF of the rear and/or front derailleur so as to move the motion transmission chain on the toothed wheels associated with the axle of the pedal cranks and with the hub of the rear wheel, so as to establish the transmission ratio selected by the cyclist, thus performing a gearshifting.
Each control device 30d, 30s is connected by means of the connector 90 of the electrical multiconductor cable 36d, 36s to a respective command inverter 1 by coupling the connector 90 with the respective second interface 4 of the command inverter 1. The first interface 2 of each command inverter 1 is, on the other hand, connected to a respective connector 80 of the interface I of the electronic gearshifting control unit CPU.
It is now assumed that the cyclist wishes to carry out an upward gearshifting of the rear derailleur. He lowers the lever 32d of the right control device 30d thus activating the corresponding switch. A signal sUR is generated that, through the multiconductor cable 36d, reaches the electrical termination 90D of the connector 90 and from this the electrical termination 4D of the second interface 4 of the command inverter 1.
Thanks to the presence of the command inverter 1, the signal sUR is an upward gearshifting signal of the rear derailleur. Indeed, following the scheme of electrical connection between the first and the second interface 2 and 4 illustrated in
It results that, although the cyclist has lowered the lever, thus transmitting a signal that, in the absence of the command inverter 1, would command a downward gearshifting of the rear derailleur, since the electrical termination 90D matches with and corresponds to the electrical termination 80D of the electronic control unit CPU, such a signal reaches the interface I of the electronic control unit CPU on an inverted terminal, i.e. on the electrical termination 80U of the connector 80 associated with the input of an upward gearshifting control signal. The interface I thus transmits an upward gearshifting signal sUR to the power system SP and the power system SP thus makes the actuator AR of the rear derailleur move so that it moves the chain onto a toothed wheel of greater diameter, thus performing an upward gearshifting of the rear derailleur.
It is now assumed that the cyclist wishes to carry out a downward gearshifting of the rear derailleur. He lifts the lever 32d of the right control device 30d thus activating the corresponding switch. A signal sDR is generated that, through the multiconductor cable 36d reaches the electrical termination 90U of the connector 90 and from this the electrical termination 4U of the second interface 4 of the command inverter 1.
Thanks to the presence of the command inverter 1, the signal sDR is a downward gearshifting signal of the rear derailleur. Indeed, following the scheme of electrical connection between the first and the second interface 2 and 4 illustrated in
It results that, although the cyclist has lifted the lever, thus transmitting a signal that, in the absence of the command inverter 1, would be an upward gearshifting signal of the rear derailleur, since the electrical termination 90U matches with and corresponds to the electrical termination 80U of the electronic control unit CPU, such a signal reaches the interface I of the electronic gearshifting control unit CPU on an inverted electrical termination, i.e. on the electrical termination 80U of the connector 80. The interface I thus transmits a downward gearshifting signal sDR to the power system SP and the power system SP thus makes the actuator AR of the rear derailleur move so that it moves the chain onto a toothed wheel of smaller diameter, thus performing a downward gearshifting of the rear derailleur.
The same applies to the left control device 30s. In this case, when the cyclist lowers the lever 34s, a signal sUF is transmitted to the command inverter 1. Such a signal sUF enters the command inverter 1 at the electrical termination 4D of the second interface 4, passes through the conducting wire 6U and comes out from the command inverter 1 at the electrical termination 2U of the first interface 2. The interface I of the electronic control unit CPU receives the signal sUF at the correct electrical termination 80U so that it transmits an upward gearshifting signal to the power system SP, as desired. The power system SP thus makes the actuator AF of the front derailleur move so that it moves the chain onto a toothed wheel of greater diameter, thus performing an upward gearshifting of the front derailleur.
When, on the other hand, the cyclist lifts the lever 34s a signal sDF is transmitted to the command inverter 1. Such a signal sDF enters the command inverter 1 at the electrical termination 4U of the second interface 4, passes through the conducting wire 6D and comes out from the command inverter 1 at the electrical termination 2D of the first interface 2. The interface I of the electronic control unit CPU receives the signal sDF at its electrical termination 80D so that it transmits a downward gearshifting signal to the power system SP. The power system SP actuates the actuator AF of the front derailleur so that it moves the chain onto a toothed wheel of smaller diameter, thus performing a downward gearshifting of the front derailleur.
The command inverter 100 comprises a first interface 200 for electrical connection to an electronic gearshifting control unit CPU (
In particular, the command inverter 100 comprises a first main body 300 in which the plurality of electrical terminations of the first interface 200 is housed. In the illustrated embodiment, a first, a second, a third, a fourth, a fifth, a sixth, a seventh and an eighth electrical termination 200GR, 200MR, 200UR, 200DR, 200GF, 200MF, 200UF, 200DF are provided, which are suitable for electrically coupling with corresponding first, second, third, fourth, fifth, sixth, seventh and eighth matching electrical terminations 800GR, 800MR, 800UR, 800DR, 800GF, 800MF, 800UF, 800DF of connectors 800R, 800F associated with an interface I of the electronic control unit CPU (
The male electrical terminations 200GR, 200MR, 200UR, 200DR, 200GF, 200MF, 200UF, 200DF are distributed in the first interface 200 of the command inverter 100 according to a univocal coupling configuration with the corresponding female terminations 800GR, 800MR, 800UR, 800DR, 800GF, 800MF, 800UF, 800DF of connectors 800R, 800F. In other words, each male electrical termination 200GR, 200MR, 200UR, 200DR, 200GF, 200MF, 200UF, 200DF of the first interface 200 can be coupled only with the corresponding female electrical termination 800GR, 800MR, 800UR, 800DR, 800GF, 800MF, 800UF, 800DF of connectors 800R, 800F.
In the illustrated embodiment, the electrical terminations 200GR, 200MR, 200UR, 200DR, 200GF, 200MF, 200UF, 200DF of the first interface 200 are male electrical terminations and the matching and corresponding electrical terminations 800GR, 800MR, 800UR, 800DR, 800GF, 800MF, 800UF, 800DF of connectors 800R, 800F are female electrical terminations. Of course, in a totally equivalent way, female electrical terminations 200GR, 200MR, 200UR, 200DR, 200GF, 200MF, 200UF, 200DF and male electrical terminations 800GR, 800MR, 800UR, 800DR, 800GF, 800MF, 800UF, 800DF can be provided.
The command inverter 100 comprises a second and a third main body 700R, 700F, preferably substantially cylindrical. In the second main body 700R a first, a second, a third and a fourth electrical termination 400GR, 400MR, 400UR, 400DR are housed, suitable for electrically coupling with corresponding first, second, third and fourth matching electrical terminations 900GR, 900MR, 900UR, 900DR, of a connector 900R associated with the manual gearshift control device 30d of a bicycle mounted on the right of the handlebars (
The electrical terminations 400GR, 400MR, 400UR, 400DR, 400GF, 400MF, 400UF, 400DF of the second interface 400 are distributed in the second and third body 700R, 700F of the command inverter 100 according to a univocal coupling configuration with the corresponding terminations 900GR, 900MR, 900UR, 900DR, 900GF, 900MF, 900UF, 900DF of connectors 900R, 900F. In other words, each electrical termination 400GR, 400MR, 400UR, 400DR, 400GF, 400MF, 400UF, 400DF of the second interface 400 can be coupled only with the corresponding electrical termination 900GR, 900MR, 900UR, 900DR, 900GF, 900MF, 900UF, 900DF of connectors 900R, 900F. In the illustrated embodiment, the electrical terminations 400GR, 400MR, 400UR, 400DR, 400GF, 400MF, 400UF, 400DF of the second interface 400 are female electrical terminations and the matching and corresponding electrical terminations 900GR, 900MR, 900UR, 900DR, 900GF, 900MF, 900UF, 900DF of connectors 900R, 900F are male electrical terminations. Of course, in a totally equivalent way, it is possible to provide female electrical terminations 400GR, 400MR, 400UR, 400DR, 400GF, 400MF, 400UF, 400DF and male electrical terminations 900GR, 900MR, 900UR, 900DR, 900GF, 900MF, 900UF, 900DF.
The univocal coupling between the electrical terminations 200GR, 200MR, 200UR, 200DR, 200GF, 200MF, 200UF, 200DF of the first interface 200 and the matching and corresponding electrical terminations 800GR, 800MR, 800UR, 800DR, 800GF, 800MF, 800UF, 800DF of connectors 800R, 800F and between the electrical terminations 400GR, 400MR, 400UR, 400DR, 400GF, 400MF, 400UF, 400DF of the second interface 400 and the matching and corresponding electrical terminations 900GR, 900MR, 900UR, 900DR, 900GF, 900MF, 900UF, 900DF of connectors 900R, 900F can be obtained by the geometric arrangement, for example asymmetrical as shown in
It should again be noted that the connectors 800R, 800F and 900R, 900F have matching and corresponding terminations, 800GR, 800MR, 800UR, 800DR, 800GF, 800MF, 800UF, 800DF and 900GR, 900MR, 900UR, 900DR, 900GF, 900MF, 900UF, 900DF, respectively, which are suitable for coupling univocally when the command inverter 100 is not arranged between the gearshifting control device 30d, 30s and the electronic gearshifting control unit CPU of the bicycle.
The electrical terminations 200GR, 200MR, 200UR, 200DR, 200GF, 200MF, 200UF, 200DF of the first interface 200 and the terminations 400GR, 400MR, 400UR, 400DR, 400GF, 400MF, 400UF, 400DF of the second interface 400 are electrically connected together by means of the multiconductor cable 600 having two branches 600R, 600F, each comprising, for example, four conducting wires, 600GR, 600MR, 600UR, 600UF and 600GF, 600MF, 600DF, 600DR, respectively. Each conducting wire 600GR, 600MR, 600UR, 600DR, 600GF, 600MF, 600UF, 600DF can comprise a plurality of strands.
Preferably, each conducting wire 600GR, 600MR, 600UR, 600DR, 600GF, 600MF, 600UF, 600DF of the multiconductor cable having two branches 600 is coated by a respective first insulating sheath (not shown) and the conducting wires thus coated are in turn wholly coated by a common insulating sheath 616, which follows the branching of the conductive cable 600.
In particular, and with reference to
The first conducting wire 600GR is the earth conducting wire associated with the right control device 30d; in use, an electric MODE/SET signal sMR between the right control device 30d and the electronic control unit CPU (
It results that the conducting wires 600GR, 600MR, 600UR and 600GF, 600MF, 600DF electrically connect together matching and corresponding electrical terminations 200GR-400GR, 200MR-400MR, 200UR-400UR, 200GF-400GF, 200MF-400MF, 200DF-400DF of the first and second interface 200 and 400 of the command inverter 100. Differently, the conducting wires 600UF and 600DR connect together not corresponding electrical terminations 200UF-400DR and 200DR-400UF of the first and second interface 200 and 400 of the command inverter 100. Therefore, the electrical terminations 200UF and 200DR of the first interface 200 are not electrically connected to matching and corresponding electrical terminations of the second interface 400.
Thanks to such an inversion of connection between electrical terminations of the two interfaces, an inversion is obtained for example between the downward gearshifting command of the rear derailleur and the upward gearshifting command of the front derailleur of the bicycle, as will become clearer hereafter.
In other words, a cyclist by lifting the lever of the right gearshift control device 30d commands the upward gearshifting of the rear derailleur and by lowering the lever of the same right control device 30d commands the upward gearshifting of the front derailleur. Similarly, a cyclist by lifting the lever of the left gearshift control device 30s commands the downward gearshifting of the rear derailleur and by lowering the lever of the same left control device 30s, commands the downward gearshifting of the front derailleur. In other words, with the same control device, the cyclist commands upward and downward gearshifting, respectively, of both of the derailleurs, front and rear.
The first interface 201 comprises a first, a second, a third, a fourth, a fifth, a sixth, a seventh and an eighth male electrical termination, 201GR, 201MR, 201UR, 201DR, 201GF, 201MF, 201UF, 201DF, respectively, suitable for electrically coupling with respective female electrical terminations of connectors 800R, 800F associated with the interface I of the electronic control unit CPU (
The second interface 401 comprises a first, a second, a third and a fourth female electrical termination 401GR, 401MR, 401UR, 401DR suitable for electrically coupling with respective male electrical terminations 900GR, 900MR, 900UR, 900DR of the connector 900R associated with the right control device 30d (
The connections between the electrical terminations of the first interface 201 and the electrical terminations of the second interface 401, as well as the mode of connection between the electrical terminations of the first interface 201 and the electrical terminations of connectors 800R, 800F and the mode of connection between the electrical terminations of the second interface 401 and the electrical terminations of connectors 900R, 900F are totally similar to those described for the command inverter 100 with reference to
With reference to
As stated earlier, in the standard configuration of a handlebars, the right control device 30d is suitable for commanding upward and downward gearshifting of the rear derailleur, whereas the left control device 30s is suitable for commanding upward and downward gearshifting of the front derailleur.
Each control device 30d and 30s is connected through an electrical multiconductor cable 36d and 36s equipped with the connector 900R, 900F to the command inverter 100 by coupling the connector 900R, 900F to the second interface 400 of the inverter 100. More specifically, the connector 900R is coupled with the main body 700R and the connector 900F is coupled with the main body 700F. The first interface 200 of the command inverter 100, on the other hand, is connected to the connectors 800R, 800F of the interface I of the electronic control unit CPU.
When a cyclist wishes to use the right control device 30d to perform an upward gearshifting of the rear derailleur, he lifts the lever 34d of the control device 30d thus activating the corresponding switch. An upward gearshifting signal sUR of the rear derailleur is generated, which through the multiconductor cable 36d reaches the electrical termination 900UR of the connector 900R and from this the termination 400UR of the second interface 400 of the command inverter 100.
Following the scheme of electrical connection between the first and the second interface 200 and 400 illustrated in
It is now assumed that a cyclist wishes to use again the right control device 30d to perform an upward gearshifting of the front derailleur. He lowers the lever 34d thus activating the corresponding switch. An upward gearshifting signal sUF of the front derailleur is generated, which through the multiconductor cable 36d reaches the electrical termination 900DR of the connector 900R and from this electrical termination reaches the electrical termination 400DR of the second interface 400 of the command inverter 100.
Thanks to the presence of the command inverter 100, the signal sUF is an upward gearshifting signal of the front derailleur. Indeed, again following the scheme of electrical connection between the first and the second interface 200 and 400 illustrated in
It results that, although the cyclist has lowered the lever 34d, thus transmitting a signal that, in the absence of the command inverter 100, would be a downward gearshifting signal of the rear derailleur, such a signal reaches the interface I of the electronic control unit CPU on an inverted terminal, i.e. on the electric terminal 800UF of the connector 800F of the interface I. The interface I thus transmits an upward gearshifting signal sUF of the front derailleur to the power system SP and the power system SP makes the actuator AF of the front derailleur move so that it moves the chain onto a toothed wheel of greater diameter, thus performing upward gearshifting of the front derailleur.
When a cyclist wishes to use the left control device 30s to perform downward gearshifting of the front derailleur, he lowers the lever 34s of the left control device 30s thus activating the corresponding switch. A downward gearshifting signal sDF of the front derailleur is generated that, through the multiconductor cable 36s reaches the electrical termination 900DF of the connector 900F and from this the electrical termination 400DF of the second interface 400 of the command inverter 100.
Following the scheme of electrical connection between the first and the second interface 200 and 400 illustrated in
Thanks to the presence of the command inverter 100, the signal sDR is a downward gearshifting signal of the rear derailleur. Indeed, again following the scheme of electrical connection between the first and the second interface 200 and 400 illustrated in
It results that, although the cyclist has lifted the lever 34s, thus transmitting a signal that, in the absence of the command inverter 100, would be an upward gearshifting signal of the front derailleur, such a signal reaches the interface I of the electronic control unit CPU on an inverted electrical termination, i.e. on the electrical termination 800DR of the connector 800R. The interface I thus transmits a downward gearshifting signal sDR of the rear derailleur to the power system SP and the power system SP makes the actuator AR of the rear derailleur move so that it moves the chain onto a toothed wheel of smaller diameter, thus performing downward gearshifting of the rear derailleur.
The command inverter 102 comprises a first interface 202 for electrical connection to the electronic gearshifting control unit CPU and a second interface 402 for electrical connection with a pair of gearshift control devices 30d, 30s mounted on the right and left of the handlebars of the bicycle. The second interface 402 is totally similar to the second interface 400 of the command inverter 100 of
Connections between the electrical terminations of the first interface 202 and connectors 800R, 800F and connections between the electrical terminations of the second interface 402 and connectors 900R, 900F of the right and left control devices 30d, 30s are totally similar to those described for the command inverter 100, and thus they will not be further illustrated. Between the first and the second interface 202 and 402 of the command inverter 102 a printed circuit board 606 is arranged, comprising a plurality of tracks (not shown), which acts as a means of electrical connection between the first interface and the second interface 202 and 402 of the command inverter 102.
In particular, the printed circuit board 606 is connected to the first interface 202 of the command inverter 102 by means of a first pair of multiconductor cables 620R and 620F, each equipped with a respective connector 622F and 622R for electrical connection to the printed circuit board 606. The printed circuit board 606 is also connected to the second interface 402 of the command inverter 202 by means of a second pair of multiconductor cables 640R, 640F, each equipped with a respective connector 642F and 642R for electrical connection to the printed circuit board 606.
The arrangement of tracks inside the printed circuit board 606 is such as to make the inversion of the commands according to the connection scheme of
The various connectors of the embodiments described above and illustrated in the Figures are preferably air-tight.
A man skilled in the art will recognise that it is possible to combine the various characteristics of the embodiments described above to obtain further embodiments, all in any case covered by the scope of the present invention as defined by the following claims.
For example, although by means of the command inverter device of the various illustrated embodiments an inversion is carried out between the commands of a pair of commands or of two pairs of commands, it is possible, by changing the electrical connections between the terminations of the first interface and the terminations of the second interface, to carry out an inversion between the commands of more than two pairs of commands. For example, it is possible to carry out the upward gearshifting of the rear and front derailleur by lifting and lowering the right control lever as stated above, but the downward gearshifting of the rear and front derailleur by lowering and lifting the left control lever.
The inverted/modified commands can comprise, as an alternative or in addition, also one or more MODE/SET commands.
In addition to reverse commands of a pair of commands from time to time, it is also possible to change the mode of manual input between three or more commands. For example, when a first, a second and a third switch are controlled by respective levers or buttons configured to enter into the CPU a first, a second and a third command, respectively, in the absence of the command inverter device, an electrical connection between the terminations of the first interface and those of the second interface can be made in the command inverter device such that the commands generated through the first, second and third switch are the second, the third and the first command, respectively.
Moreover, the control inverters of the invention are equally applicable to any type of gearshift, like for example a semi-automatic gearshift and, as stated above, also to controls not of the bar-end type. Furthermore, although a mode of connection through removable connectors between the command inverter and the electronic gearshifting control unit, on the one hand, and one or two gearshift control devices, on the other hand, has been described and illustrated, it is possible to provide any similar mode of connection, within the capabilities of the man skilled in the art.
The male electrical terminations do not necessarily have to be made projecting inside cavities of the main bodies as shown.
The connectors shown as directly associated with the CPU and with the controls can, on the other hand, be made at the end of respective cables removably connected to the CPU and to the controls, for example to facilitate the assembly of the various parts of the gearshift on the frame of the bicycle.
As stated above, in addition to be applicable to a pair of control devices suitable for each imparting the command signals of a respective derailleur, the command inverter is applicable to a single control device suitable for imparting control signals of the change of the transmission ratio, suitably converted by the CPU into upward and/or downward gearshifting signals of one or both of the derailleurs. Moreover, the command inverter is applicable to gearshifts having just the rear derailleur or just the front derailleur.
The command inverter of
It is also possible to commercialise kits of many inverters having different connections between terminations of the first interface and those of the second interface, between which the cyclist can choose to obtain the configuration most suited to his needs and preferences.
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| MI2012A1280 | Jul 2012 | IT | national |
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