GB2504835A - Motorcycle gearshift assistant for clutch free gear changes - Google Patents

Abstract

A motorcycle gearshift assembly has a gearshift assistant 100 comprising a translation device 160 for transforming a rotational movement performed by means of a gearshift lever 150, and facilitates a method of changing gear on a motorcycle gearshift assembly without actuation of the clutch, comprising the steps of moving a gearshift lever 150, causing springs 201 to compress. A sensor 212 detects movement of the lever 150 above a predefined amount and causes the engine to be speeded up or the ignition to be interrupted, as appropriate, thereby allowing the gearshift shaft to be rotated by the relief of springs 201, changing gear without requiring operation of the clutch.

Description

Descdption without actuaUon of the dutch. and method therefor The invenUon r&ates to a method of changing gear on a motorcycle gearshift assembly without actuation of the clutch.

The invention also relates to a gearshift assistant for changing gear on a motorcycle gearshift assembly without actuation of the clutch.

Last but not east. the invention relates to a motorcycle gearshift assembly for changing gear on a motorcycle gearshift assembly without actuation of the dutch.

Prior Art

The invention is based upon a serni-automatic motorcycle gearshift assembly or a semiautomatic gearshift method, Le., changing gear without actuation of a clutch, in accordance with the generic type of the independent claims.

The subject matter of the present invention is gearshift assemblies for motorised twowheelers or motorcycles, in which a gear change is performed without manual d&clutching by the user.

Motorcycle gearshift assemblies for changing gear without actuation of the clutch are known from the Prior Art. They are in part fairly large in terms of their structure and/or have a lower quality gearshift behaviour, in particular when a gearchanging procedure is interrupted. Also, it is often the case that expensive torce measuring sensors are required. Moreover, the known motorcycle gearshift assemblies often do not operate in a sufficiently reliable manner.

DE 10 2010 015 036 Al discloses a gearshift device for motorcydes, having an actuating element which can be actuated by foot in a first gearshift direction or In a second gearshift direction opposite to the first gearshift direction and which is coupled to a gearshift Input of a motorcycle transmission via a gearshift assistance device which permits a gear change when the clutch Is dosed. The gearshift assistance device perMts a gear change in one direction or the other direction when the clutch is closed. The gearshift assistance device has a single spring, wherein the gearshift assistance device is designed such that, starting from a non-actuated basic position, In which the spring Is pretensloned by pressure, the spring of the actuating element Is compressed upon actuatton of the actuating element in the llrst gearshift direction and upon actuation thereof In the second gearshift direction.

Disclosure Of the Invention

The method In accordance with the invention for changing gear on a motorcycle gearshift assembly without actuation of the clutch, comprises the steps of moving a gearshift lever and performing the gear-changing procedure based on a movement of the gearshilt lever from the starting position, wherein the gear-changing procedure is performed for changing-up and also changing-down procedures, depending upon the movement of the gearshift lever.

This has the advantage that after installation the gearshift assistant assists a gear change In both directions without actuation of the dutch. Whereas, after installation, other gearshift assistants are fixed In one direction in terms of gearshift assistance, in accordance with the Invention any gear change in both directIons, i.e., changing-up and changing-down, can be performed after installation with assistance and without actuation of the dutch.

In contrast to the Prior Art, the motorcycle gearshift assembly in accordance with the invention, the gearshift assistant and the method in accordance with the invention of changing gear on a motorcycle gearshift assembly without actuation of a clutch have the advantage that In the case of a method of changing gear on a motorcycle gearshift assembly without actuation of the clutch, comprising the steps of moving a gearshlft lever from a starting position and/or to a starting position and performing the gear-changing --------____________ --. +C C ftftflt procedure based on a movement of the gearshift lever from the starting position, wherein by means of the movement at least one spring accumulator unit, which assists the gear-changing procedure, undeipoes a change in pretension, It is provided that the movement and thus the change in S pretension are translated by means of a translation device, so that by means of the transiaUon device the change In pretension and thus a gear-changing procedure behaviour can be adjusted. in one embodiment an adjustment is effected on one occasion, e.g. as a factory setting or during production. In another embodiment, the adjustment Is effected via an accessible setting screw or the like, In other words, a user can undertake a personal adaptation with ease of access. In one embodiment, a spring characteristic, which is optimised for a gear change, or an optimised pretension Is adjusted cii one occasion andtor in an unchangeable manner. The transfer of the gearS changing movement or a gear-changing force is not effected in a purely linear manner. Rather, a translation of the force and/or the movement Is performed by the translation device, The translation Includes a translation of force and/or translation of movement, In particular a translation of a translatory movement Into a rotatory movement. In this manner, it is possible to achieve improved metering during gear-changing. The change In pretension can be adjusted by the translation device which Is formed e.g. as a transmission. In one embodiment, the spring accumulator unit is relieved, in particular completely relieved or is formed so as to be free of pretension, In a starting position. In a preferred entodiment, It Is provided that the spring accumulator unit Is disposed at least in a slightly pretensioned manner in the starting position.

Preferably, the spring accumulator unit Is pretensloned such that It assists in locating neutral gear. The translation device permits a flexible arrangement of the gearshift assistant. The gearshift assistant enables the spoits rider to make the most rapid gear changes and enables the touring rider to change gear comfortably without actuation of the clutch, both upwards and downwards.

The measures described in the dependent claims permit advantageous developments and Improvements of the devices specified in the independent and coordinated claims, in one embodIment, ft is provided that the movement of the gearshlft lever Includes a rotation of the gearshift lever about a gearshift lever axis. In this manner, a pulling or pushing actuation of the gearshift lever or more generally also an input lever Is transferred into a rotation or displacement by a displacement angle about the gearshift lever axis. The transfer Is effected e.g. by means of a ball and socket joint. A displacement angle is e.g. In a range of about -15° to about +15*, most preferably in an angle range of about -7.5° to about +75° In another embodIment, it Is provided that the implementation of the gear change is performed independently of rotational speed. The gearshift assistant is active at each rotational speed. This is achieved Inter ella by the spring support and the structure of the gearshift assistant. Therefore, in contrast to known solutions, which ensure gearshift assistance only at specific rotational speed ranges, a comfortable gear change is achieved.

In a further embodiment, It Is provided that the rotation of the gearshift lever Is translated or transformed into a translational movement in an axial direction of the gearshift lever axis. A path or movement translation Is performed accordingly, In a further embodiment of the present invention, It Is provided that the spring accumulator unit Is pretensloned by means of the translational movement..

The spring accumulator unit Is pretensloned preferably in a direction along the gearshift lever axIs.

In contrast to the Prior Art, the gearshift assistant in accordance with the Invention for the purpose of changing gear on the motorcycle gearshift assembly without actuation of the clutch has the advantage that In the case of the gearshift assistant for changing gear on the motorcycle gearshift assembly without actuation of the dutch, ft Is provided that means for performing the method in accordance with the invention are provided. As a result, it is possible to achieve Improved metering during the gear change. A means Is eg. a I ansiation device which is formed as a transmission. The transmission can be intaiied in a spacesaving manner. Moreover, any transrnsson raho can be adiustad by the transmission for an optimised gear change.

in one nbOO'n1Gnt. it is provded that the means include a transiation device e.g. a transformation transmission, for the purpose of transiating or transforming a movement, which is performed by means of a gearshftt iever, and/or an appiied force, in particuiar a rotationad movement or a torque, e.g. into a trartshitionai movement or a puiling or pushng force. As a result. it is it) posse to produce a spacesavirig design. *the transformation transmission produces greater flexibility wth nagar to the location in which the gearshift assistant can be placed. The gearshift ever is rotatabie about a gearshift ever axis. in one embodiment, the gearshiti ever axis is disposed concentrically with respect to a geersratt ever shaft or an output iever. in 1.5 another embodiment, the gearshift ieve.r axis is disposed eccentricav with respect to the gearshift ever shaft, The. translation device is formed as a force and/or path or movement translation detime.

in a turther embodiment, it is provided that the translation device has a rotart )i) iftno evce havinu at east one rotary mit and a lifilnu nit coooerahnn 0 N p ec ott nc gearshift lever.. The first rotar unit is mounted so as to he rotatable about the gearshift lever axis. The lifting unit is mounted seas to be axiaDy movable on the gearshift ever axis. Preferably, the lifting unt is mounted in a rotationaily 2 txea manner n reaton to the gearshirt lever axs. in his event of a rotauonai movement of the rotary unit, the ithng unit is moved axialiy relative to the rotary unit along the qearshift lever axis. The rotary unit contacts the lifting unit dunnq the entire rotational movement, The units have coresponding translation means or transformauon means in order to transform the rotational movement of the rotary unit nto a translational movement of the ilifing unit.

The translation means or transformation means operate preferably in, accordance with the inclined rJane phnciole. in another embodiment.

additional movement bodies such as rolling and/or sliding bodies are rovided which can be moved corresponthngly r&ative to the translation means. Other translation means in the form of transmission means, such as couplings, gear wheels, cam disks and/or the Uke are also possible. Without addItional movement bodies, prelerably friction-reducing means such as coatings or suitable material pairings are provided. For example, a coating is provided in the form of a sliding lacquer or the like. The translation means are formed IdentiSly or differently. For example, in one embodiment the inclined planes are formed to be differently steep or hat in particular, the inclined planes which are formed for a changing-up procedure are formed differently to the indilned planes formed for a changing-down procedure. Different gearshift to behaviours can thus be produced. In one embodiment, the Inclined plane is formed as a straight line. In other embodiments, the Inclined plane has a curved progression, In particular a progression which Is curved once or multiple times. For example, the Inclined plane extending in a curved manner is S-shaped or C-shaped. hi one embodiment, it is provided that the gradient of the Inclined plane is constant In another embodIment, it Is provided that the pitch of the Inclined plane varies, e.g. discretely or continuously.

Progressive, declining or random gearshift behaviours can thus be produced.

Moreover, in one embodiment It Is provided that the means have at least one spring accumulator unit which Is coupled to the rotarylifting device and which can be moved from a more relaxed state to a more pretensionS state by means of an axial movement of the rotaEyflfflng device. On the one hand,the spring accumulator unit is coupled to the liftIng unit. On the other hand, the spring accumulator unit is ñxed, e.g. by means of a housing, a dlslç a stop or the like. The spring accumulator unit is thus compressed or pretensloned during an Sal movement of the lifting unit. The spring accumulator unit Is formed e.g. as a spring, in particular as a compression spring such as a plate spring or the like. In one embodiment, the spring accumulator untt Is formed from a plurality of springs. In one embodiment, the springs are formed e.g. In a linear manner or connected In series. In another embodiment, a parallel connection or a combination of a series connection and a parallel connection is provided.

In summary. the following can be stated.

The aearshitt assistant aunts more rapid gear changes or qearchar';ginq procedures with a comfortable and precAse gear change without actuating a dutch durina the changingup or chanqinqdown prOcedure. The gearshift assistant is attached to one. end of the gearshift lever shaft: and is connece.

to a gearshift lever. The P:ear5rP lever is responsive to tense and/or cc mpressive ioads which are exerted upon it dunng the geanchanging procedure-. if a predetermined displacement angle on the-gearshift lever is achieved, tne gearshft assstant. triggers euher an interrupton n gntion (1 aunnc the chan in --up procedure or a brief opening of the throttle during the changIng-down procedure.. Both functions retard a force or' the drive train -Sy vrtueef the fact that the spring accunuiator unit is pretensoned in the ss ata au t c of a srt l a ge-ar change without actuation of the clutch and without changing the throttle S controL The gearshift iever or the input part is attached to the gearshift lever shaft or the cutout oat and cn be moved n differtnt dirertions. Withnut the appiic-ahon of force, the goarsftft lever is ocaUed in a ne-utrai or centred position by virtue of the restonno, force of the sprino; accumuatcr unit. A sensor in the aearshift assistant monitors the disolacement ancie of the gearshift lever. When a predetermined displacement angle of the earshift lever is reached, the. sensor in the gearshift assistant generate-s a signal to the engine controller, in order to perform the desired finction.

For the. purpose of charqing-down. a pressure is applied to the gearshift lever in the direction of the gearsPft assistant. The gearshift lever transfers the tianslation into-a rotation or a dispacement (displacement angle). I rw displacement in one direction produces a tension in the spring of the gearshift assistant. When the predetermined displace'merit angie is reached. the sensor in the gearshift assistant generates a signal for the engne controfler, so that the throttle is opened for a' short time. The-transfer of force to the drive train is interrupted, The pretensioned sonnq or spring accumulator unit 0 0 C 0 r u o u. ee o ct o e gearshift lever shaft which effects the mechanical gearchanging procedure..

For the purpose at chananqup, a pulimg force is fransferred via the gearshift lever to the qearshift assistant. The gearshth lever or input lever translates the qearchr3noina force Into a deflection. The deflection in the corresponding direction proouces a tension of the spring accumulator unit of the gearshtt 5: assistant As soon as the ddsplacernent angle is reached, the sensor ot the gearshift assistant generates a signal to the engine controer which lr'terrupts the igniton br a short time, The transfer of force to the drive train is interruoted. The pretensioned spring or spring accumulator unit transters the spring energy or spring force to the output iever or directiy to the gearshift 0 ever shaft which effects the mechanicai gearchangng orocedure. The sensor used is preferably a Hall angle sensor. The sensor is positioned upstream of the magnet which is mounted axially on the earshift lever shaft A magnetic ilux density in the x-and ydirection is detected. An output signal is calculated from the flux density by means of arc tanoent functions. The sensor provides two independent output signals. The sensor operates in a contactless manner.

As a result, the gearshift assistant permits cnangingup and changingdown procedures with ounlfsec: gearchanging time and precision, wtthout actuaton of the ciutch. The gear change is thus transparent and confloured naturaflv for the user. irrespective of the use of a clutch actuation. The user does not require any time to pet used to this and there are no differences with.

regard to the gearshift characteristics and pearshift tee!. The gearshift assistant is arranged in such a manner that no design changes are required.

Throuph the use at the inteorated spring forces, the gear.chanciinq procedure is executed with precision and incorrect gear changes are avctided. The gearshift assistant does not require any maintenance and is disposed at a position on the motorcycle which. is not criticaL The flexible configurability means that a lever length and an offset can be adapted in any manner to the user's requrements.

in contrast to the Prior Art, the. n'otorcycJe gearshift assembly in accordance with the invention for changing gear on a motorcycle gearshilt assembly wtnout actuaton of a clutch has the advantage that in the case of a motorcvde g'esrshift assembv for hanging gear on a motorcyte transmission without actuation of a dutch. comprising at east one gearshift electronic system and at east one aearshift mechanism, wherein the. gearshift eectronic system is coupled to the gearshift mechanism. tie provided that a S gearshat assistant in accordance 4th the. invention is provided in order to pertonn a method in accordance with the invention, Sf descriplion of the drwns By way of example ony, spectio embodiments of the present invention wifi 0 ncrw be described with reference to the ccnimanvino drawinas. in which: Fkun. 1 shows schemaUcaUy a. qoarshift assistant in its posThon on a motorcycle, Figure 2 shows schematicaflv an eniarged section of the motorcycle in IS the reçon of the &warshift assistant, Figure 3 shows schematicafly another view of the gearshift assistant on the motorcycle.

Fiqure 4 shcAvs schematicay a crosssectionai view of a structure of a first exempufiec: embodiment. of the gearshift assistant, Flare S shows schornaticaily a perspective view of another embodiment of the gearshift asssiant, 6 shows schernaticafly a perspective view of another embodiment of the gearshift assistant Figure? shows schematicaily a perspective view of a geaNchangirç procedure of the yea rshift assistant, and Fipure B shows schematicaily an expioded view of the structure of an.

embodiment of the qearshift assistant.

Denpoa of the e:xempflftS embodmnte Fgures 1 to 5 show different embodiments of a gearshift assistant 100 in different views and different degrees cf detail. The gearshift assistant 100 is formea for chanqing gear on a motorcycie gearshift assembly without actuation of the clutch, more speciticaily for assisting a gearcrangng procedure on a motorcycie gearshift assembly withoot actuation of the dutch, or more briefly also for ss'm autnnaUc gear changing. During the-gear--changing procedure, a qearshift tever or an input tever 150, which is coupied to a gearshift lever, is moved from a startino position to a gearshift nosition.

The gearchanging procecture is triggered by the movement, in order to assist the gearchanging procedure, a spnn accumulator unit 125 is provdea. The movement of the qearshift lever 150 causes the saring accumulator urilt to undergo a change in (pre)tension. Upon inftiation of the ge-anchanging procedure, the tension of the spring accumutator unit 125 is increased accordingiy. In order to perform the gear-changing procedure, the increased spnng accumulator unit tension and the energy thus stored in the sonna accumulator unit 125 are used br rsabie initiation and im lementation of the çear-changmq procedure. The gearshift assistant 100 and the method of changing gear are described in detail hereinafter..

I shows schematicaUv the cearshift assistant 100 in ii position on a motorcycle I The qearshift assistant 100 is connected on the motorcycle I betwen a qearshftt ever 150 and a gearshift lever shaft or an output lever 20 (both not iustrated here). The position of the gearshift assistant 100 will become; dearer hereinafter.

Hgure 2 shows schematically an enlarged section of the nxtorcy'cie I in the region of the gearshft assistant 100. The gearshift assistant 100 is seated in extension concerrLricay with respect to the gearshift lever shaft 20 (or output ever, only indicated). Correspondingly the gearshift assistant 100 protrudes out'tiardlv away from a manual transmission, of which only the manual transmission housing 30 is illustrated here.

II

Figure 3 shows schematicafly another view of the gearshift assIstant 100 on the motorcycle 1. The gearshift assistant 100 is connected to the gearshift lever 150 via a bafl and socket joint 40. The gearshift lever 150 is formed as a foot pedal having a corresponding foot part 151. A movement of the gearshift lever 150 is thus transferred to the gearshift assistant 100. The gearshift lever can be actuated clockwise about a gearshift (ever shaft axis or a gearshift lever axis 152, which coincide in the exemplified embodiment shown here, or can be actuated antlclockwise about Its gearshlft (ever axIs 152. The gearshift lever axIs 152 extends centraUy through the gearshift assistant 100 along the extension direction thereof.

Figure 4 shows schematically a cross-sectional view oVa structure of a first exemplified embodiment of the gearshift assistant 100. In this exemplified embodiment, the gearshitt assistant 100 is seated concentrically on the output lever or the gearshift lever shaft 20. The gearshift lever shaft 20 has a shaft end 21 which is tbrmed cylindrically. It Is received in a corresponding receptacle 105 of the gearshift assIstant 100. In order to securely receive the shaft end 21. the receptacle 105 is formed conically with a tapering cross-section, so that a radial distance from one wall of the receptacle 105 to the shaft end 21 is reduced in the direcUon of the shaft end 21. The tapering intermediate space be$raen the shaft end 21 and receptacle 105 is lifted by a wedge-shaped body 107 whIch ensures secure reception. In addition, the shaft end 21 Is secured by a screw 109 which passes through the gearshift assistant 100 in the direction of the shaft end 21. On its outer periphery, the gearshlft assistant 100 or a gearshift assistant body 133 has a stop 111 in the form of a stop disk lila which secures, in the axial direction, a ball bearing race 115 In addition to a shoulder 113. Fooisd in the ball bearing race 115 are a plurality of groove-like recesses 117 which in the exemplified embodiment illustrated here have an approximately rectangular cross-section, The recesses 117 are spaced apart from oath other and are thus separated from each other by corresponding walls. A balI 119 Is located in each case in the individual recesses 117. Instead of bails 119, it Is also possit4e to use other rolling, sliding or roller bodies. The balls 119 are received In the recesses 117 to such an extent that they are dIsposed at least halfway In the

I

recesses 117. Aceorthniy, a depth of the recess 117 is greater than a radius of the ball 119. A further ball bea!lng race 121 is provided opposite the ball bearing race 115 and differs substantally from the ball beadnç race 115 by virtue of the depth of the recesses 123 ci' the bail beehng race 121. The : depth of the recesses of the ball beanrg race 121 is consderably less than that of the recesses 117 of the baii bearinc race 115 and is thus dearly ess than the diameter of the bails 119. In the event of a rotation of the gearshift iever 150, this rotation is transferred to the ball beadrg race 115. The ball bearing race simuftaneously rotC with the balls 119, whereu on the bails 115 abut aonst the edoe of the recesses 123 at the hell bearing race 121.

Since the recesses 123 are not so deeo that they can hold the balls 119 in the recess 123, the hails 119 move beyond the recess 123 and thus push the ball bearing race 121 away from the ball bearing race 123 As a result, a spring accumulator unit 125 adiolning the ball bearing race 121 is compressed and spring energy is stored in this manner. The sodng accumulator unit 125 is secured in the axia direction by means of a further stop 127. The stored cnn energy is used fcr changing gear or br implementing the gea chancing procedure.

Figure 5 shows schematically a perspective view of another embodiment of the qearsnft as&;stant 100. The gearshift assistant 100 includes in this case an attachment 12$, which is formed as a ciamnina element 202, for the gearshift lever shaft 20 with the gearshift assistant 100, The attachment 129 has a profiled receptacle 131 which is formed for receiving the corresponding gearshift lever shaft 20. The attachment 129 is connected in a rotationally nxea manner to the gearshift assistant body 133. The attachment 129 and the pearshift assistant body 133 are engaged with one another in ciawiike fashion, so that they are disposed in a rotationally tixed manner with respect to each other. Disposed on a shoulder 135 of the gearshift assistant body 133 is a stop disk 137, against whose surface the balk 119 run. The balls 11 Oare secured on the. other side by means of a bali bearing race 139. The ball bearina race 139 has recesses I $1 which hold the balk 119 in position.

The wails of the recesses 141 are fonmed as slopes 143 in the manner of ar inclined plane. When the balls 119 are rutated with respect to the recesses * ***** 141, they are moved out of the recesses 141 along the slope 143, whereby the bail beating race 139 is moved axially away from the stop disk 137. The axial movement Is transferred to the adjoining spring accumulator unIt 125, in which the spring energy is stored and is retrieved In order to assist a gear-changing procedure.

The two ball bearing races 115 and 121 with the balls 119 disposed therebetween, or the ball bearing race 139, the balls 119 and the stop disk 137 thus create a translation devIce 160, more specifically a rotary-lifting devIce 101, by means of which a rotational movement is translated Into a translational movement.

Figure 6 shows schematicafly a perspective view of another embodiment of the geartift assistant 100, In principle, the structure of the gearshift assistant 100 Is similar to the two prevlouy Illustrated embodiments. However, in this case the translation devIce 160 is formed differently. The translation device as shown in Figure 6 does not require additional translation means 162 such as balls 119.. Instead, the translation means 162 are integrally formed in the manner of inclined planes 162a. The translation device 160 Inciudes the rotary-lIfting devIce 161 wIth a rotati) unIt 165 which is formed as an annular disk 165a having protrusions, which project In a tootMke manner in the axial direction, in the form of Inclined planes 162a. The rotary unit 185 cooperates with a UfUng unit 187 whIch is formed in a complementary manner with respect to the rotary unit 165. In other waits, the lifting unit 167 Is formed as an annular disk 165a having protrusions, which project in a tooth-ke manner in the axial direction, in the form of inclined planes 182a. The protrusions are approximately flpezoldal In formation, wherein at the side a respective Inclined plane 162a extends towards the annular disk 165a The Inclined planes 182a can have the same gradient or can extend differently, depending upon which gearshift behaviour Is to be adjusted. For example, in one embodiment an inclined plane 162 tbr a changb'ig-up procedure is formed to be flatter than an inclined plane I 62a for the changing-down procedure or vice versa. The translation device 160 or the rotary-lifting device 161 translates or transforms a rotational movement of the rotary unit 165 into a translational movement of the fting unit 167. As a resLt, the spnng accumthator unit 125 s compre:sseo' or reeved. During compression. the spring energy is storea and used for the qearcharging procedure.

S Figure 7 shows schematimthy a perspective view of a geancnangmg procedure of the gearshift assistant 100. The gee r*changing procedure is tngqereci by an actuaton of the actuating unit formed as a qeershift ieve rISO.

The actuahng unit is moved either in a first direcon A or a second, opposw threcton B according to the arrows. The rotationai movement resuitng from Ci the actuation is transferred to the gearshift assistant 100. The rotationai movement is transformed into a tran&ationa movement by means of the translation device 100 or the rotary-lifting device 161. The trandationai movement oretensions the spring accumulator unit 125. The spring accumuiator energy thus stored is used for assisting the geaNchanging orocedure.

B shows schematicaiiy an exploded view of the structure of an embodiment of the qearshift assisthnt 100. in the exemplified embodiment illustrated in this case, a spacer disk $07 which can be adjusted vie en axially adjustabe setung screw 2GB is disposed in a housing 20$. n the axial direction, the spacer disk 207 is adicined by a spring accumuiater umut 125 which is formed from a piuraiity of, in this case two, piate springs 201 The.

spring accurrulator unit 125 is adioined in the axiai direction by a carrier disk $06 which at the same time forms a stop surface for the spring' accumuiator unit 125. The carder disk 206 is connected in the axiai direction in a rotationally fixed rnannerto the tifting unit I 67 formed as a lifting disk 205 of the rotary4ifting device i$I. The thing cusk $05 is connected in a ro1.auonav fixed manner to the carder disk:or by means of three cylinder pins 216 which engage into cnrrespondmg openings 206a of the carrier disk.206. The. tilting disk 205 has, on one side facing away from the c'yllnder pins 218. the tooth like, axially prcecting protrusions which are. formed as inciined anes I 62:a and function as transiation means 162. Comspondinçfly, the second lifting disk 205 is axially adjoined by' a rst lifting disk 205 which is in engagement with tne lifting disk 205 and functions as a rotary unit 165 ot the rataryhftng device 161. The first lifdng disk 220 has, in the direction of the second Rfh'ng disk 205, tooth-Uke, axially nroecting inclined planes 162a which are designed in a complementary manner with respect to the inclined planes 162 of the second Offing disk 205. The first lifting disk 220 is connected in a rotationaliy fixed manner to the cearshift ever 150. which receives the first lifting disk 220.

by means of three cyinder pins 219. Disposed on a ceripheral surface of the output or geashift lever 150 is a magnet 210 for determining the position of the gearshift lever 150. Furthermore, the gearshift lever 150 is axially connected to a damping element 202, by means of which a shaft 209 can be 0 connected to the gearshift lever 150. The clamping element 202 is connected to the housing 204 by means of t cylinder screws 2.1$ and two cyUnder pins 17 A thradd hot i1 is rere'1ed in the shaft 20$' The haft 209 ic connecten' in?. rotationally fixed manner to a flange of the shaft 209 by means of the clamping element 202. byway of the. cylinder screws 213. The gearshift assistant 100 is clamped on the qearshift lever shaft (not iflustrated here' by cans a he cy,naer scre 21o 1 ne sensor 2 s a sposot' n tIe c' L 204 by means of two cylinder screws 215. The sensor 212 detects the movement of the magnet 210. With the aid' of this detecton of movement, a control signal is produced for the engine controller. Depending upon the embodiment, the movement is formed as a rotatory or transiatory movement.

The sensor 212 is thus formed as a sensor for detecting position, in particular for angle measurement and/or path measurement, Cahns

Claims (1)

1. l.A method of charing gear on a motorcycie. gearshift assembiy wthout actuation of the dutch, comprking the steps of: moving a cearshft ever and paflorrmng the gearchangng procedure based on a movement of the qearshift ever from the startng poston. characteFised n that the gearchangng procedure s performed for changngup and aso changing down procedures, depending upon the movement of the. gearshtt ever.

   2A method of changing gear on a motomyde gearshift assemdy without actuation ct the dutch as daimed in daim I compheino the steps of moving a qearshUt ever from a starting position and/or to a starting position and perfbrming the rchanç$ng procedure based on a movement of the gearshth iever from the starting poeWon, wherein by means of the movement at ieast one spring accumuetor unit. wnmn assists the gearchanqnq rocedure, undergoes a change in retenson, wherein the movement and thus the charge in pretension are transiated by means of a trandaton device.so that by means of the trans!atmn devce the cnango HI preens'on ano thus a gearchangipo procedure behaviour can be adjusted.

   3A method as cicimed in ciaim I or 2. characterlsed in tha't the n)pementaton of the change ot: gear is performed independentiy cf rotabona speed.

   4. A method as daimed in any one of the orecedino daims 1 to 3, characterised in that the movement. of the gearshift iever indudes a rotation of the qearshift ever about a gearshift iever axis.

   A method as camed many one of the preceding dawns 1, to$, characterised in that. the rotation c$' the gearshift ever is transiated into a trsrsationai movement in an axia direction of the gearshift iever axis.

   6, A method as dairned in any one of the preceding dairns 1 to 5, characterised in that by means of the tran&ationai movement the spring accumuiator unIt is prelensioned in a transiated manner.

   7. Arnethod as daimed in any one of the preceding daims I to 6, charactedsed in that irrespective of a further movement of the gearshift ever a gear chmige is performed with the assistance of the pretensioned sorinq accumuietor unit when a predetermined angie of rotation is reached..

   8, A qearshtft assistant for chanqinq qear on a motorcyce cearshift assernbv &t o * on t.' "e cut" c rcctoou " *r e,ns a"a y'c' nec 4 the t"cd correc e c r<ceo c ca a sh' as t a)5 \d th t t*'L Cc I: flOEüOC a ransator uevee for an.sormmg a rcauona movement peflo med by means of a gearshift ever.10. A cearshift assistant as ciaimed in daim 8 or 9. charactedsed in that the transiatlon øevce has a rotarylifting device having at ieast one rotary unit and a thing unit which cooperates therewith.1.1 A gearshift assistant as ciafrned in any one of the precethno ciaims 8 to 10. characterised in that the means have a sprinq accurnuiator unit which is coupied to the rotaryflftinq device and which can be moved from a more 25; reiaxed state to a more pretensioned state by means of an axia movement of the rotarwifftin device.12. A rmtorcycie gearshift assemMy for changing pear on a moiorcyce gearshilt assembiy without actuation of the dutch, comprising at east one gearshift eiectromc system and at east one gearshdt mechanism, wherein the gearshift eiectronic system is coupied to the qearshift mechanism, characterised in that a gearshift assistant i$S carneo in any one of the preceding daims 8 to 1 is provided in order to perform a method as cialmed in any one of the precedino dams 1 to 7.13. A method of changnç gear one motorcyde. geershit assembly without actuaUon of the. clutch substantlaily as her&n described with reference to, and as ifiustratea the actompanyirig drawings..14. A oearshth assstant fbr chanajra qearon a motorcycle pearshth assemby wthout actuatmn at' the clutch substanbay: as hemr, descpbGd with reference to, end as illustrated n, the accompanynq drawings.15. A motorcycle gearshift assembly for changing gear on a motorcycle gearshift asscmbly without actuation of the clutch substantially as herein described with reference to, and as illustrated n, the accompanyinc drawno;s.16. A motorcycle operated in accordance with the method as caimed n any S of clams I to 7 or 13, orccmrlsn a gearshift asSstant as claimed in any of claims B to 11 or 14 or comprislnq a cearshift assembly as clamed in claim 12.or ckirn 15.