EP0886598A1

EP0886598A1 - Device for actuating a switching axle operationally connected to a bottom bracket axle shift gear

Info

Publication number: EP0886598A1
Application number: EP97913081A
Authority: EP
Inventors: Florian Masch.Ing.Htl Schlumpf
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-01-03
Filing date: 1997-12-04
Publication date: 1998-12-30
Also published as: WO1998029296A1; US6123639A

Abstract

A device is disclosed for actuating a switching axle (30) operationally connected to a bottom bracket axle shift gear (10) for a bicycle or the like. The switching axle (30) is coaxially arranged and mounted in a driving shaft (35) fitted at least at one end with a pedal crank (1, 2) secured against rotation. In order to shift gears, a first coupling member (23) arranged on the driving shaft (35) can be shifted in the axial direction by the switching axle (30), thereby bringing the force transmission elements of the bottom bracket axle shift gear (10) into interlocking and force-transmitting engagement. To ensure the displacement in the axial direction, a second control body (45) operationally connected by a second coupling member (40) to the switching axle (30) is provided at the other end of the driving shaft. When the control body (45) is rotated around the longitudinal axis (X) with respect to a fixed housing part (25) provided with at least one regulating member (27), the control body (45) can move in the axial direction. The control body (45) is rotated for example by an actuator operationally connected thereto and capable of rotating around the longitudinal axis (X).

Description

Device for actuating a shift axis operatively connected to a switchable bottom bracket gear

The invention relates to a device for actuating a shift axis operatively connected to a switchable bottom bracket gear for a bicycle or the like and mounted in a hollow cylindrical drive shaft, which together with a drive shaft arranged at one end of the drive shaft rotatable about its longitudinal axis and with the force-transmitting functional elements of the bottom bracket gear to be positively connected first coupling member is displaceable in the axial direction relative to the drive shaft.

Switchable bottom bracket gears for a bicycle or the like are known from the publications (EP-A 0 562 470, EP-A 0 666 212), in which a coupling member operatively connected to a shift axis and a drive shaft to achieve a change in speed with a chain wheel or with a A parallel distance from the sun gear or vice versa can be brought into engagement, the movement of the shift axis oriented for the switching function in the axial direction being arranged on the outside of the pedal crank and in each case with the foot-actuated switching element. The individual switching element can either be in the form of a push piece arranged in a recess in the pedal crank and configured in the form of a button, or in the form of an elongate push piece which is mounted on the outside of the pedal crank and can be deflected relative thereto.

The invention has for its object to provide a device by means of which the axial displacement of the individual functional elements required for the speed change is considerably facilitated while maintaining an exact switching function and safe handling.

The object is achieved according to the invention in that a second coupling member is arranged at the other end of the switching axis and is operatively connected to a control body mounted on the drive shaft in such a way that when the control body connected to at least one actuating member is pivoted about the longitudinal axis, the latter together with the shifting axis is moved in the axial direction and, depending on the pivoting direction, the first coupling member arranged on the drive shaft and displaceable relative to it in the axial direction can be brought into engagement for the positive and non-positive operative connection of the functional elements.

Further features and exemplary embodiments of the invention result from the following description in conjunction with the patent claims and the drawing. The invention is described below with reference to the drawing. It shows:

1 shows a bottom bracket for a bicycle or the like with a switchable bottom bracket gear and a first exemplary embodiment of a device for actuating the bottom bracket gear; 2 shows a portion of the bottom bracket according to Fig.l shown in view with a second embodiment of the device for actuating the bottom bracket gear;

3 shows a portion of the bottom bracket according to FIG. 1 shown in view with a third embodiment of the device for actuating the bottom bracket mechanism;

4 shows the first embodiment of the device for actuating the bottom bracket gear shown on the line IV-IV in FIG. 1 in section and on a larger scale;

5 shows the first embodiment of the device for actuating the bottom bracket gear shown on the line V-V in Fig.l in section and on a larger scale;

6 shows the first embodiment of the device for actuating the bottom bracket gear, shown as a longitudinal section along the line VI-VI in FIG. 4;

7 shows the first exemplary embodiment of the device for actuating the bottom bracket gear according to line VII-VII in FIG. 4 as a longitudinal section;

8 shows a section of a control body for the device according to FIGS. 6 and 7, shown as a development and in plan view, for actuating the bottom bracket gear;

9 shows the second exemplary embodiment of the device according to FIG. 2, shown as a longitudinal section, for actuating the bottom bracket gear in a first position;

10 the device according to FIG. 9 in a second position; 11 shows the device shown in section along the line XI-XI in FIG. 9 for actuating the bottom bracket gear according to FIG. 1;

12 shows the third embodiment of the device according to FIG. 3, shown as a longitudinal section, for actuating the bottom bracket gear in a first position;

13 the device according to FIG. 12 in a second position;

14 shows the device shown in section along the line XIV-XIV in FIG. 13 for actuating the bottom bracket gear;

15 shows a section of the device according to FIG. 12, shown in a view and partly in section, with the guide grooves arranged on a control body;

16 shows a section of the device according to FIG. 12 shown in a side view in the direction of the arrow XVI;

17 shows a variant, shown as a longitudinal section, of the device designed for actuating the bottom bracket gear according to FIG. 12 in a first position;

18 shows the device according to FIG. 17 in a second position;

19 shows a section of a control body for the device according to FIGS. 17 and 18, shown in section; and

20 shows a section of a coupling member, which is in engagement with the control body according to FIG. 19, for the device according to FIGS. 17 and 18. In Fig.l a bottom bracket 150 for a bicycle or the like is shown in view and partially in section to better explain the invention. At one end of the bottom bracket 150, a switchable bottom bracket gear 10 is arranged, which is operatively connected to a device 115 arranged at the other end for actuating the bottom bracket gear 10. 2 shows, as a second exemplary embodiment, a device 120, shown in a schematic view and arranged on the bottom bracket, for actuating the bottom bracket transmission 10 (FIG. 1), and the functional elements 1, 5, 3, 35, 35 "and 60, 64 connected to it can be seen 3 shows, as third and fourth exemplary embodiments and in a schematic view, devices 125 and 130 with the functional elements 1, 5, 3, 35, 35 "and 80 arranged on the bottom bracket for actuating the bottom bracket transmission 10 (FIG. 1). The individual exemplary embodiments of the devices 115, 120 or 125 or 130 and structural details thereof are described in detail in conjunction with FIGS. 4 to 20.

The bottom bracket 150 essentially comprises, as shown in FIG. 1, a hollow cylindrical bottom bracket housing 5, a coaxially mounted and also hollow cylindrical drive shaft 35, the bottom bracket gear 10 operatively connected to it and the ends 35 'and 35 spaced apart in the axial direction "The drive shaft 35 arranged pedal cranks 1 and 2. The two pedal cranks 1, 2 are operatively connected in a manner not shown to the drive shaft 35 and together with the latter can be rotated about a longitudinal axis X of the drive shaft 35 in the direction of the arrow Y.

The bottom bracket gear 10 shown as an exemplary embodiment and in section in FIG. 1 comprises a gear housing 11 which is mounted coaxially in the bottom bracket housing 5 with a molded tubular body 11 ′. In the interior of the transmission housing 11, not designated, are a sun gear 20 and at least two planet gears 15 distributed in the circumferential direction. A sprocket 6 provided with an external toothing 7 is mounted on the drive shaft 35 at a parallel distance from the sun gear 20. Provided on the chain wheel 6 in the circumferential direction and designed for mounting the planet wheels 15 are bearing bolts 17, on each of which a planet wheel 15 is arranged rotatably about the longitudinal axis X 'thereof in the direction of the arrow Y'. The planet gears 15 provided with an external toothing 16 are on the one hand in engagement with an internal toothing 12 of the gear housing 11 and on the other hand with an external toothing 21 of the sun gear 20.

The chain wheel 6 and the disk-shaped sun wheel 20 are each provided with a recess 8 and 22, respectively, delimited by a wall (not designated). On the inner wall of the recess 8, which is not designated, the chain wheel 6 is provided with a first latching device 9, which comprises a plurality of latching elements (not shown) which are arranged in a circumferential direction. The sun gear 20 is provided on the inner wall of the recess 22, which is not designated, with a second latching device 19, which likewise comprises a plurality of latching elements (not shown) which are arranged in a circumferential direction. A first coupling member 23, which is displaceable in the axial direction, is arranged on the drive shaft 35 between the chain wheel 6 and the sun wheel 20. The first coupling member 23 is provided on one side with a first locking device 24 and on the other side with a second locking device 24 '. The first coupling member 23 is operatively connected via the driver part 18 to a switching axis 30 penetrating the drive shaft 35 in the axial direction. The driver part 18 is guided in slots 36 and 36 ′ which are correspondingly oriented in the axial direction and diametrically opposite one another in the drive shaft 35. The drive shaft 35 has a through hole 37 oriented in the axial direction, in which rather the switching axis 30 is arranged coaxially and is supported by means not shown.

On both sides of the driver part 18 arranged on the switching axis 30, a compression spring 32 and 32 'is arranged, which can be adjusted with regard to the resilient restoring force by means of two stops 31 and 31' arranged on the switching axis 30 in the axial direction and being lockable. By means of a pushing movement of the switching axis 30 oriented in the direction of the arrow Z, the coupling member 23 with the latching device 24 ′ arranged thereon can be positively engaged with the associated latching device 19 of the sun gear 20 in a manner not shown. By moving the switching axis 30 in the opposite direction of the arrow Z ', the other latching device 24 of the coupling member 23, as shown in FIG. 1, can be positively engaged with the latching device 9 of the chain wheel 6.

The embodiment of the device 115 arranged on the bottom bracket 150 and shown in view in FIG. 1 has a first actuating member 55 arranged on the bottom bracket housing 5 and a second actuating member 50 operatively connected thereto. A pulling member 116 is arranged on the second actuating member 50 and is not shown in FIG Way attached. With the tension member 116, the two actuators 50 and 55 can be pivoted about the common longitudinal axis X, the function elements associated therewith in the axial direction depending on the pivoting movement (FIG. 4) oriented in the direction of the arrow R or R '(FIG. 4) of the two actuators 50, 55 Z or Z '(FIG. 1) oriented movement of the shift axis 30 and the corresponding shift function of the bottom bracket gear 10 effect. The individual functional elements operatively connected to the two actuators 50, 55 and the switching axis 30 are described in detail below with reference to FIGS. 4 to 8. In Figure 4, the device 115 along the line IV-IV in Fig.l is shown in section and on a larger scale and you can see the first actuator 55, a housing part 25, a control body 45, the hollow cylindrical drive shaft 35 and one with the switching axis 30 second coupling element 40 which is operatively connected and arranged in a bore 37 '. On the inner wall 57' of the first actuating element 55, which is delimited in the radial direction by an annular flange 56, projections 57 "are arranged which are distributed in the circumferential direction. On one side of the projections 57" are formed on it and parallel to the inside 56 'of the annular flange 56 shoulders 56. Provided between the projections 57''distributed in the circumferential direction to each other is a compression spring, wherein, for example, the two compression springs 29 and 29' are shown in FIG . The compression springs 29, 29 'are supported at one end on stops 28 which are correspondingly distributed in the circumferential direction on the housing part 25 and on the end edge of the shoulder 56'', and the other end on the end face of the correspondingly assigned projection 57'', which is not shown. Correspondingly designed bores 59, 59 'are provided in the projections 57 "of the first actuating member 55 for receiving fastening screws 43 (FIG. 7). In the housing part 25, actuators 27 arranged in a circumferential direction are also arranged and fastened by means not shown. The actuators 27 are arranged with a molded-on pin 27 'in guide grooves 48 which are distributed over the circumference of the control body 45. On the inner wall 57' of the first actuating element 55, latching cams 58 'are arranged in the circumferential direction, which are arranged in correspondingly assigned recesses 46 of the control body 45. The control body 45 is operatively connected to the first actuating member 55 by means of the locking cams 58 '. In the exemplary embodiment of the elements 55, 25 and 45 partially shown in FIG. 4, three projections 57 ″, compression springs 29, stops 28, actuators 27 and locking cams 58 ′, for example, are provided distributed in the circumferential direction. However, there is also the possibility that only two or more elements 57 ″; 29; 28; 27 and 58 'are provided.

In FIG. 5 the device 115 along the line VV in FIG. 1 is shown in section and on a larger scale and one can see the second actuating element 50 provided with an arcuate segment part 52 as well as the partly illustrated first actuating element 55 and the partly shown bottom bracket housing 5. The second actuating member 50 is arranged with an integrally formed disc-shaped flange 51 in an annular groove 25 "of the housing part 25. In the segment part 52 shown partially broken open in FIG. 5, a circular arc-shaped groove 53 is delimited by a wall 53 ', in which the groove shown in FIG 1 is arranged and fastened in tension member 116. Furthermore, the partially shown tubular body 11 'can be seen in FIG.

FIG. 6 shows the first device 115 for actuating the bottom bracket gear 10, shown as a longitudinal section along the line VI-VI in FIG. 4, and the bottom bracket housing 5, the end piece of the tubular body 11 'of the gear housing 11 (FIG. 1), can be seen the longitudinal axis X rotatable drive shaft 35 and a section of the switching axis 30 arranged coaxially therein. A roller bearing 13 is arranged on the drive shaft 35 between a pressure ring 14 screwed onto the second section 35 ″ and the end face of the tubular body 11 '.

Furthermore, in FIG. 6 one can see the second actuating element 50 shown in the profile cross section, ne and shown in profile cross section first actuator 55, which is arranged with a cylindrical section 25 'coaxially in the bottom bracket housing 5 and firmly connected to the tubular body 11' by a screw connection housing part 25 and the control body provided with an inner hub ring 47 and with an outer control ring 47 ' 45. The housing part 25 provided on the outer circumference with the stops 28 for the compression spring 29 has an annular shoulder 25 ″ on which the second actuating member 50 with the annular flange 51 is arranged and mounted. The second actuating member 50 has on the outer circumference of the segment part 52, the groove 53 delimited by the wall 53 'and an annular shoulder 52', on which the first actuating member 55 with the annular flange 56 is arranged and mounted.

The first actuating member 55 comprises the annular flange 56, a first end wall 57 formed thereon and an annular second end wall 58 formed thereon. On the inner wall 57 'of the first end wall 57, the projections 57 ″ distributed in the circumferential direction (FIG. Arranged in the area of the second end wall 58 on the inner side thereof, which is not designated, are the latching cams 58 'which are arranged in a mutually distributed manner and which engage in the recesses 46 of the control body 45. The control body 45 has the guide grooves 48 arranged on the outer control ring 44' in the circumferential direction , in each of which the pins 27 'of the actuators 27 arranged in the housing part 25 and fastened by means not shown are guided. The hub ring 44 of the control body 45 is provided with an annular groove 49, in which one with the drive shaft 35 and with the other Bore 37 'of the same arranged coupling member 40 w irk connected driver pin 39 is arranged and guided. The driver pin 39, which is provided, for example, with a stepped head 39 ', is guided in longitudinal slots 38, 38 * which are oriented in the axial direction and are arranged diametrically with respect to one another on the drive shaft 35. The driver pin 39 arranged transversely to the longitudinal axis X is mounted in the second coupling piece 40. The coupling piece 40 has an internally threaded section 40 'into which the switching shaft 30 provided with a thread 30' is screwed and held by a nut 33. At the front end, the coupling piece 40 is provided with a recess 40 ″ oriented in the axial direction. In the recess 40 ″ there is a compression spring 34 ′ which engages with the switching axis 30 at one end and with a detent ball 34 at the other end. The detent ball 34 is arranged in a notch 39 ″ provided on the driving pin 39 such that the driving pin 39 with the head 39 ′ provided at the end is arranged and guided centrally in the annular groove 49 of the control body 45 with respect to the longitudinal axis X.

In FIG. 7, the second actuating member 50 shown in the profile cross section and the first actuating member 55 that is operatively connected to it and shown in the profile cross section according to the line VII-VII in FIG. 4 are also shown as a longitudinal section. 6, a bore 54, 54 'for fastening the tension member 116 (FIG. 1) arranged in the arcuate groove 53 is shown in the second actuating member 50 according to FIG. 7 also shows a bore 59 and 59 'arranged in the region of the projection 57 "for receiving a fastening screw 43 connecting the two actuators 55 and 50, which are preferably each arranged in the region of the projections 57" distributed in the circumferential direction. On the inside of the end wall 58 of the first actuating member 55 there is at least one latching cam 58 ', preferably the latching cams 58' distributed in the circumferential direction are arranged, which as built (FIG. 7), engage in the recesses 46 of the control body 45, which are correspondingly distributed around the circumference of the outer control ring 47 ', in a positive and non-positive manner. 7 also shows the control body 45 with the inner hub ring 47 and the outer control ring 47 'and the elements 5; 11' described in detail above in connection with FIG. 6; 13; 14; 25; 30; 33; 35, 35 "; 39 and 40.

In Fig. 8, a section of the control body 45 for the device 115 is shown on a larger scale in a developed plan view and one recognizes the inner hub ring 47 with the annular groove 49 arranged therein for the head piece 39 'of the driving pin 39 (Fig. 6, 7) and the outer control ring 47 *. On the outer control ring 47 ', the spaced-apart recesses 46 for the latching cams 58' (FIG. 7) of the first actuating element 55 and the guide grooves 48 arranged therebetween and essentially in the form of curved tracks are arranged. In the exemplary embodiment shown, the control body 45 is provided with three recesses 46 which are distributed in the circumferential direction and delimited by a wall 46 ′, and with three guide grooves 48 arranged in between. The individual guide groove 48 has a section 48 'which is arranged with a theoretical first axis S parallel to the theoretical longitudinal axis X and a section which is obliquely arranged with a second axis S' with respect to the first axis S and is rounded at the end 48 ". The section 48" of the guide groove 48 is delimited in the exemplary embodiment shown by a wall 46 "of the outer control ring 47 '. The acute angle α of the second section 48" existing between the two axes S and S' with respect to the first section 48 'is for example 45 °. In a variant not shown, however, there is also the possibility that the second section 48 "of the guide groove 48 is continuous, ie without the wall 46". 9 shows the second device 120, shown as a longitudinal section and on a larger scale, according to FIG. 2 for actuating the bottom bracket gear 10 and the bottom bracket housing 5, the end piece of the tubular body 11 ', a housing part 65 with the cylindrical section 65', can be seen Drive shaft 35, the roller bearing 13 held there by the pressure ring 14 against axial displacement, the switching shaft 30 provided with the threaded part 30 'and a coupling piece 41. The coupling piece 41 is arranged in the bore 37, 37' of the drive shaft 35 and with the section 41 'screwed onto the threaded part 30' of the switching axis 30 and secured by the nut 33. The elements mentioned above are designed essentially analogously to the first device 115 (FIGS. 6, 7).

In a departure from the first device 115 according to FIG. 4 to FIG. 8, the second device 120 according to FIG. 9 to FIG. 11 comprises an approximately hood-shaped actuating member 60 and a control body 70 provided with a control ring 71. There are several on the control ring 71 Guide grooves 72 distributed in the circumferential direction are arranged, only one guide groove 72 being shown in FIG. The arrangement and design of the guide grooves 72 arranged on the control ring 71 of the control body 70 corresponds, for example, analogously to the exemplary embodiment of the control body 85 described below in connection with FIG. 15.

In the second device 120 according to FIG. 9, the control body 70 stands over a drive pin 42 with the drive shaft 35, which is guided in an inner annular groove 74 of the same and in the longitudinal slots 38, 38 'of the second section 35 "of the drive shaft 35, and over the coupling arranged therein - Piece 41 in operative connection with the switching axis 30. In the control body 70 there is a bore 73, which is arranged transversely to the longitudinal axis X and is preferably designed as a blind hole, into which the driver pin 42 is inserted and secured by a screw 75 arranged transversely thereto Screw 75 is screwed into a thread 75 ′ (FIG. 10) provided on the control body 70. In a variant not shown in more detail, the driving pin 42 is designed as a so-called dowel pin and is held in the coupling piece 41 in a self-locking manner, so that additional securing by the screw 75 is not necessary.

At least two, but preferably a plurality of actuators 66 distributed in the circumferential direction are arranged on the housing part 65. The individual actuator 66 held in the housing part 65 with a threaded piece has a molded-on pin 66 ', which engages in each case in the guide groove 72 arranged on the outer circumference of the control ring 71. A plurality of guide grooves 72 and actuators 66 distributed in the circumferential direction are arranged on the control ring 71 of the control body 70 (FIG. 11).

Deviating from the first position shown in FIG. 9, the device 120 is shown in a second position in FIG. 10, in which the control body 70 is relatively relative to the control member 70 by a pivoting movement about the longitudinal axis X in the direction of arrow R (FIG. 11) the not designated end face of the housing part 65 is shown shifted. In this position (FIG. 10), the individual elements of the bottom bracket gear 10 (FIG. 1) are arranged relative to one another in such a way that the coupling member 23 engages with the latching device 24 • with the associated latching device 19 of the sun gear 20 (not shown).

As shown in FIG. 9 and FIG. 10, the actuating member 60, which is approximately hood-shaped and provided with the interior 60 ′, comprises a first end wall 61, a second end wall 62 formed obliquely thereon and an annular flange 63 formed thereon. The operating member 60 is mounted with the annular flange 63 on the outer diameter of the housing part 65. In the device 120 according to 9 and 10, the elements required for changing the speed of the bottom bracket transmission 10 (FIG. 1) are arranged in the interior 60 'of the actuating element 60 and are protected against external interference and contamination. On the outer periphery of the actuating member 60, a tab 64 is arranged and fastened for fastening a tension member or the like, by means of which the device 120 for changing the speed of the bottom bracket gear 10 (FIG. 1) can be actuated in a manner not shown.

FIG. 11 shows the device 120 in section along the line XI-XI in FIG. 9 and one can see the outer annular flange 63 of the actuating member 60, the housing part 65, the control body 70 with the control ring 71, the second section 35 "of the drive shaft 35 and the coupling piece 41. The coupling piece 41 is operatively connected to the control body 70 via the driving pin 42. The driving pin 42 is in the slots 38, 38 'of the drive shaft 35 in the axial direction (FIGS. 9, 10) and in the inner annular groove 74 of the control body 70 in the circumferential direction (FIG. 11) and secured by the screw 75. Furthermore, the actuators 66 distributed around the circumference in the housing part 65 can be seen, each of which is arranged with the integrally formed pin 66 ′ in the outer circumference of the control ring 71 Engage guide grooves 72.

At least two, but preferably a plurality of second actuators 76 arranged at a distance from one another in the circumferential direction are also arranged on the outer circumference of the actuating member 60. The second actuators 76 are screwed into the outer circular flange 63 of the actuating member 60 with a threaded piece 76 'and are arranged with a molded pin 76 "in a recess 67 of the housing part 65. The individual actuator 76 is form-fitting with the pin 76" in one assigned, formed as a blind hole 77 of the control body 70. The for Guide of the actuator pin 76 "formed recess 67 is limited by two spaced walls 67 'and 67". The outer annular flange 63 can also be designed such that the screwed-in actuators 76 are flush with the outer surface (not shown).

The actuating element 60 is operatively connected to the control body 70 by the second actuators 76, which are arranged distributed in the circumferential direction. During the pivoting movement of the actuating member 60 oriented about the longitudinal axis X in the direction of the arrow R (FIG. 11), the control body 70 is correspondingly guided by the inevitable guidance of the pin 76 ″ in the guide groove 72 in the interior 60 ′ relative to the end face of the fixed housing part 65, not shown Direction of arrow Z (Fig. 10.) When the actuating member 60 is pivoted in the opposite direction of the arrow R ', the control body 70 is pushed back into the end position as shown in Fig. 9. The pivoting movement of the parts 60 and 70 which are operatively connected to one another relative to the fixed housing part 65 is delimited by the actuators 76 which can be brought into engagement with the walls 67 ', 67 "of the recesses 67.

12 shows the third device 125, shown as a longitudinal section, for actuating the bottom bracket gear 10 (FIG. 1) and one recognizes the bottom bracket housing 5, the end piece of the tubular body 11 ', a housing part 80 with the cylindrical section 80', with the bore 37 , 37 'provided drive shaft 35, the roller bearing 13 held thereon with the pressure ring 14 against axial displacement, the switching shaft 30 provided with the threaded piece 30' and the coupling piece 41. The coupling piece 41 is arranged in the front bore 37 'of the drive shaft 35 and with the section 41 'screwed onto the threaded part 30' of the switching axis 30 and secured by the nut 33. The elements mentioned above are formed essentially analogously to the second device 120.

Deviating from the second device 120 according to FIGS. 9 to 11, in the third exemplary embodiment of the device 125 according to FIGS. 12 to 16, the control body 85 for changing the speed of the bottom bracket transmission 10 (FIG. 1) is moved around the horizontal longitudinal axis X pivoted lever 82 reached. The lever 82, which is operatively connected to the control body 85, is provided at the upper end with an opening 82 'which is designed for fastening pulling or pushing members 3 and 4, which is shown schematically in FIG. 16.

The device 125 furthermore comprises the control body 85 arranged in the housing part 80 and provided with a control ring 86. A plurality of guide grooves 87 arranged in a circumferential direction are provided on the control ring 86, the arrangement of which is described later in connection with FIG. At least two, but preferably a plurality of actuators 81 distributed in the circumferential direction are arranged on the housing part 80, which engage with a molded pin 81 'in the respectively assigned guide groove 87 of the control body 85.

The control body 85 is provided on the end face with a section 85 ′, for example polygonal, preferably hexagonal, in the profile cross section, on which the lever 82 provided with an analogous recess (not shown) is arranged and is positively connected to the control body 85. The lever 82 is secured to the control body 85 against axial displacement by a snap ring 83, which is inserted into an annular groove 84 arranged on the section 85 ′. The control body 85 is provided with an inner annular groove 88, in which at least two driving pins 90 and 91, which are arranged with the same axis and are mounted in the coupling member 41, are guided in an engaging manner. The two the driver pins 90 and 91 are arranged in a bore 41 ″ of the coupling member 41 oriented transversely to the longitudinal axis X. The driver pins 90 and 91 guided in the longitudinal slots 38, 38 'of the drive shaft 35 are each provided with a blind hole-shaped recess 90' at the ends facing one another. and 91 '. In the assembled state, as shown partially in section in FIG. 12, a compression spring 92 is arranged between the two driving pins 90 and 91, which has one end in the recess 90' and the other end in the recess The compression spring 92 causes the driver bolts 90 and 91, which are guided in the slots 38 and 38 'of the drive shaft 35 and are operatively connected to the coupling piece 41, with the preferably rounded ends (not designated) in the annular groove 88 of the control body 85 The coupling piece 41 with the individual elements arranged in the bore 37, 37 'of the drive shaft 35 As described above in connection with FIG. 9, ducks are operatively connected to the switching axis 30.

Deviating from the first position shown in FIG. 12, the device 125 is shown in a second position in FIG. 13, in which the control body 85 is pivoted relative to the end face 80 ″ of the housing part 80 by a pivoting movement of the lever 82 oriented about the longitudinal axis X. Arrow direction Z is shifted in the axial direction In this position, the individual elements of the bottom bracket gear 10 (FIG. 1) are arranged relative to one another in such a way that the coupling member 23 engages with the one latching device 24 'with the associated latching device 19 of the sun gear 20 (not Furthermore, in FIG. 13 the elements 5; 11 '; 13; 14; 30; 33; 35; 41; 90 and 91 described above in connection with FIG. 12 can be seen.

In FIG. 14, the device 125 is shown in section along the line XIV-XIV in FIG. 13, and the housing can be seen. seteil 80, on the outer circumference of the control body 85 spaced-apart guide grooves 87 for the pins 81 * of the actuators 81. Furthermore, the coupling piece 41 mounted in the second section 35 "of the drive shaft 35 as well as the therein arranged and by the compression spring 92 spaced and with one end (not designated) arranged in the annular groove 88 driver pins 90 and 91st

In Fig. 15, the device 125 is shown in view and partially in section and one recognizes the bottom bracket housing 5, the partially shown housing part 80, the control body 85, the drive shaft 35, the pressure ring 14, the roller bearing 13, the lever arranged on the control body 85 82, the section 35 "of the drive shaft 35 penetrating the control body 85 and the switching axis 30 arranged therein. Furthermore, FIG. 15 shows the guide grooves 87 arranged on the outer circumference of the control ring 86, which are formed as elongated recesses rounded at the ends Guide grooves 87 are arranged obliquely with their axis of symmetry S ″ with respect to the theoretical longitudinal axis X of the device 125 at an acute angle *, the acute angle α ′ being, for example, 45 °.

16 shows the device 125 for actuating the switchable bottom bracket gear 10 according to FIG. 1 shown in side view according to the direction of the arrow XVI in FIG. 12, and the housing part 80, the second section 35 "of the drive shaft 35, the supporting part 85 designed for example as a hexagon can be seen 'of the control body 85 and the lever 82 secured to it by the snap ring 83. At the upper end of the lever 82, two schematically illustrated pulling or pushing members 3 and 4 are fastened in the opening 82', by means of which the lever 82 in the direction of the arrow 3 'or 4 'and at the same time together with the control body 85 and the elements operatively connected therewith about the horizontal longitudinal axis X can be pivoted. The pivoting movement of the lever 82 and the control body 85 operatively connected thereto in the direction of the arrow 3 ″ or 4 ″ about the longitudinal axis X is limited by the length of the guide grooves 87 (FIG. 15) that is not shown.

In FIG. 17 and FIG. 18, the device 130 designed to actuate the bottom bracket gear 10 (FIG. 1) is shown as a longitudinal section as a further variant, and the bottom bracket housing 5, the end piece of the tubular body 11 ', the housing part 80 with the cylindrical section can be seen 80 *, the drive shaft 35, the roller bearing 13 held against it by axial displacement by the pressure ring 14, the switching shaft 30 provided with the threaded piece 30 'and a coupling piece 100 operatively connected to it. The coupling piece 100 is in the bore 37' of the drive shaft 35 arranged and screwed with the rear section 104 onto the threaded part 30 'of the switching axis 30 and secured by the nut 33. The elements mentioned are designed essentially analogously to the device 125 described above in connection with FIGS. 12 to 16. 17 and 18 also show a control body 95 arranged in the housing part 80 with the lever 82 arranged thereon, which is arranged on the control body by the snap ring 83 arranged in an annular groove 94

95 is held. The control body 95 is with a control ring

96 provided, which is provided on its outer circumference with guide grooves 97 arranged distributed to each other. The guide grooves 97 are designed and arranged analogously to the guide grooves 87 described above in connection with FIG. 15 and provided on the control ring 86 of the control body 85. Furthermore, in FIGS. 17 and 18 one can see the actuator 81 arranged in the housing part 80, which is arranged with the pin 81 ′ in the guide groove 97 of the control body 95. In a departure from the position shown in FIG. 17, the device 130 is shown in a second position in FIG. 18. Here, the control body 95 is in the axial direction shifted relative to the end face 80 ″ of the housing part 80 in the direction of the arrow Z (FIG. 17).

In the variant according to FIG. 17, the control body 95, which is provided in its interior with a stepped inner jacket surface 95 '(FIG. 19), stands at least two first cylindrical pins 105, 105' distributed in the circumferential direction and at least two axially spaced apart therefrom Second cylindrical pins 107, 107 'distributed in the circumferential direction are in operative connection with the coupling piece 100 provided with a stepped lateral surface 100' (FIG. 20). The cylindrical pins 105, 105 'and 107, 107' arranged between the inner lateral surface 95 'of the control body 95 and the outer lateral surface 100' of the coupling piece 100 are arranged in correspondingly arranged bores 106, 106 'and 108, 108' in the second, each separated by a web 109, 109 ' Section 35 "of the drive shaft 35 is arranged. The cylindrical pins 105, 105 * and 107, 107 'are each rounded at the ends facing the two lateral surfaces 95' and 100 ', preferably spherically rounded.

At this point it is pointed out that in a variant not shown in the bores 106,106 'and 108,108' of the second section 35 "of the drive shaft 35 instead of the cylindrical pins 105,105 'and 107,107' balls arranged one above the other (not shown) can also be provided .

Fig. 19 shows a section of the control body 95 shown on a larger scale and in section and one recognizes the control ring 96 provided with a cylindrical recess 96 ', the guide groove 97 arranged thereon on the outer circumference and the section with the interior 95 ", which with the recess 96 'is connected. The interior 95 "is provided with a stepped lateral surface 95', which before two cylindrical ring surfaces 98, 98 'spaced apart in the axial direction and two adjoining, conically sliding conical sliding surfaces 99.99' and a cylindrical ring surface 98 "connecting the two conical sliding surfaces 99.99 '.

20 shows the coupling piece 100 with the end piece 104 molded onto it and the outer, stepped outer surface 100 'can be seen, which has two cylindrical ring surfaces 101, 101' spaced in the axial direction and oriented parallel to the longitudinal axis X and two adjoining and has obliquely inwardly inclined conical sliding surfaces 102, 102 'and an annular surface 103 connecting the two conical sliding surfaces 102, 102'.

During the pivoting movement of the lever 82 arranged on the control body 95, the cylindrical pins 105, 105 'and 107, 107' or balls slide along the sliding and contact surfaces of the control body 95 and the coupling piece 100 such that the second coupling piece 100, which is operatively connected to the switching axis 30, inevitably and in dependence the direction of rotation of the control body 95 is shifted in the axial direction from the position shown in FIG. 17 to the position shown in FIG. 18 or vice versa. The movement direction of the control body 95 in the arrow direction Z or Z, which is caused by the pivoting movement in the arrow direction 3 "or 4" of the lever 82, takes place analogously to the movement of the control body 85 described above in connection with FIGS. 12 and 13.

At this point, it is pointed out that the invention is not limited to the exemplary embodiments described above and illustrated in FIGS. 1 to 20. Further configurations without departing from the basic idea of the invention, ie, by a pivoting movement oriented about the longitudinal axis X in the axial direction of the Achieving longitudinally oriented thrust movement of the switching axis 30 and the functional elements connected to it are also possible.

Claims

Claims:

1.Device for actuating a shift axis operatively connected to a switchable bottom bracket gear for a bicycle or the like and mounted in a hollow cylindrical drive shaft, which together with a first shaft arranged at one end of the drive shaft rotatable about its longitudinal axis and positively connected to the force-transmitting functional elements of the bottom bracket gear Coupling member is displaceable in the axial direction relative to the drive shaft, characterized in that a second coupling member (40; 41; 100) is arranged at the other end of the switching axis (39) and with a control body (45; 70) mounted on the drive shaft (35) ; 85; 95) is operatively connected in such a way that when the control body (45; 70; 85; 95), which is connected to at least one actuating element (55; 60; 60; 82), is pivoted about the longitudinal axis (X), the latter together with the switching axis (30) is moved in the axial direction and thereby depend the pivoting direction, the first coupling member (23) arranged on the drive shaft (35) and displaceable relative to it in the axial direction can be brought into engagement for the positive and non-positive operative connection of the functional elements.

2. Device according to claim 1, characterized in that the control body (45; 70; 85; 95) at least one on the outer circumference of the same and with respect to the longitudinal axis (X) at an acute angle (α) oriented to this guide groove (48; 72; 87; 97) and relative to an actuator (27; 66; 81) which engages in the guide groove (48; 72; 87; 97) and is fixedly arranged on a housing part (25) about the longitudinal axis (X) of the drive shaft ( 35) is pivotable.

3. Device according to claim 1, characterized in that the control body (45) in the approximately hood-shaped actuator (55) and arranged with at least a latching cam (58 ') arranged on the inside (57') of the same can be brought into engagement in a form-fitting manner and thereby together with the actuating element (55) relative to the actuator (27) attached to the housing part (25) about the longitudinal axis (X) of the drive shaft (35) is pivotable.

4. The device according to claim 1, characterized in that the control body (45) together with the actuating member (55) against the restoring force of at least one on the inside (57 ') of the same arranged compression spring (29,29') relative to the fixed housing part ( 25) about the longitudinal axis (X) of the drive shaft (35) is pivotable.

5. The device according to claim 4, characterized in that the on the inside (57 ') of the actuator (55) arranged compression spring (29,29') with one end on a projection (57 ") and with the other end on one Heel (56 ") as well as on a stop (28) arranged on the fixed housing part (25) and can be pretensioned by the pivoting movement of the actuating member (55) oriented relative to the longitudinal axis (X) and can be returned by the restoring force.

6. Device according to claims 1 and 4, characterized in that with the control body (45) operatively connected to the first actuator (55) is assigned a second actuator (50) and thus fastened, the second actuator (50) on the outer circumference a circular segment-shaped groove (53) for fastening a tension member (116) arranged therein is provided.

7. The device according to claim 6, characterized in that the second actuating member (50) with a disc-shaped flange (51) closing the hood-shaped first actuating member (55) against external engagement on a shoulder (25 ") of the fixed housing part ( 25) supports and together with the first actuator (55) and the control body (45) against the restoring force of the compression spring (29,29) is pivotable about the common longitudinal axis (X).

8. Device according to claims 1 and 2, characterized in that the control body (45; 70; 85; 95) has a plurality of circumferentially arranged guide grooves (48; 72; 87; 97), which with respect to the longitudinal axis ( X) are each arranged at an acute angle () on the outer circumference of the control body (45; 70; 85; 95).

9. The device according to claim 1, characterized in that the control body (45; 70; 85) via at least one drive pin (39; 38) penetrating the drive shaft (35) transversely to the longitudinal axis (X) and guided in longitudinal slots (38, 38 '). 42; 90, 91) is operatively connected to the second coupling member (40; 41), the driver pin (39; 42; 90, 91) being guided in an annular groove (49; 74; 88) of the control body (45; 70; 85) is.

10. The device according to claim 9, characterized in that the driver pin (39) on the longitudinal side with a wedge-shaped incision (39 ") and with a rests on the side walls of the same and resiliently supported on the switching axis (30) ball (34) is operatively connected that the driver pin (39) is arranged and guided centrally in the annular groove (49) of the control body (45) with respect to the longitudinal axis X.

11. The device according to claim 1, characterized in that the control body (95) and the second coupling member (100) to achieve the movement oriented in the axial direction are each provided with mutually facing sliding and control surfaces, which are distributed in the circumferential direction and in the axial Directionally spaced first and second cylinder pins (105, 105 '; 107, 107') in operative connection stand that, depending on the pivoting movement of the control body (95) oriented about the longitudinal axis (X), the cylinder pins inevitably bring about an movement in the axial direction of the second coupling member (100) attached to the switching axis (30).

12. The device according to claim 11, characterized in that the control body (95) is provided with a stepped inner surface (95 '), which has two cylindrical and axially spaced first sliding surfaces (98,98') and two in relation thereto has obliquely inwardly inclined control surfaces (99.99 ') and a second sliding surface (98 ") connecting the two inclined control surfaces (99.99').

13. The apparatus according to claim 11, characterized in that the first and second cylindrical pins (105, 105 '; 107, 107 *) engaging with the sliding and control surfaces are transverse to the longitudinal axis (X) and diametrically opposite one another in the second section (35 ") of the drive shaft (35) arranged bores (106, 106 '; 108, 108') are inserted and, depending on the sliding and control surfaces of the second coupling piece (100), are displaceably guided transversely to the longitudinal axis (X) relative to one another are.

14. The apparatus according to claim 11, characterized in that the first and second cylinder pins (105,105 '; 107,107') at the ends facing the sliding and control surfaces of the control body (95) and the second coupling member (100) are each rounded, preferably rounded are trained.

15. The apparatus according to claim 11, characterized in that between the mutually facing sliding and control surfaces of the control body (95) and the second coupling member (100) instead of the cylinder pins (105, 105 '; 107, 107') in the Bores (106, 106 '; 108, 108') of the drive shaft (35) are each arranged at least two balls lying one above the other.

16. The apparatus according to claim 11, characterized in that the second coupling piece (100) is provided with a stepped outer surface (100 '), which has two cylindrical and axially spaced first sliding surfaces (101,101') and two with respect to it has inwardly inclined control surfaces (102, 102 ') and a second sliding surface (103) connecting the two inclined control surfaces (102, 102').

17. The device according to claim 1, characterized in that on the fixed housing part (65) a relative to the longitudinal axis (X) of the drive shaft (35) pivotable actuator (60) is arranged and is operatively connected to the control body (70) such that this can be displaced in the axial direction relative to the fixed housing part (65) together with the coupling piece (41) and the switching axis (30) during the pivoting movement of the actuating member (60) in the interior (60 ') thereof.

18. Device according to claims 1 and 17, characterized in that the control body (70) on the one hand via the first actuator (66) with the stationary housing part (65) and on the other hand via at least one second actuator (76) with the actuating member (60) is operatively connected, the second actuator (76) attached to the actuating member (60) being guided with a molded-on part in a circumferentially oriented recess (67) of the fixed housing part (65) which limits the pivoting movement of the actuating member (60).

19. The apparatus according to claim 1, characterized in that the pivoting movement of the control body (85; 95) oriented about the longitudinal axis (X) is arranged on it by means of one Lever (82) takes place, which can be actuated by means of attached pulling or pushing members (3, 4).

20. Device according to claims 12 and 13, characterized in that the rotary movement of the control body (70) by means of a to the actuating member (60) attached tab (64), which with attached pull or push members for the about the longitudinal axis ( X) oriented pivoting movement of the actuating member (60) is operatively connected.