DE102017129410A1 - Release mechanism for a clutch mechanism of a motorcycle - Google Patents

Abstract

The invention relates to a release mechanism (1) comprising at least one housing (2), an input shaft (4) extending in an axial direction (3) into the housing (2) with a first axis of rotation (5), and in the housing (3). 2)
- One with the input shaft (4) rotatably connected pivot lever (6) and
- A hub (7) with a second axis of rotation (8) and a spaced from the second axis of rotation (8) arranged pin (9), wherein the hub (7) and the pivot lever (6) via a connection (10) rotatably connected to each other are such that via a rotation of the input shaft (4) and thus of the pivot lever (6) about the first axis of rotation (5) via the rotationally fixed connection (10), the hub (7) and the pin (9) about the second axis of rotation (8 ) are rotatable; and
- A lifting disc (11) with a link (12) in which the pin (9) is guided.

Description

The invention relates to a release mechanism, in particular for actuating a clutch, preferably for a clutch mechanism of a motorcycle.

For motorcycles semi-automatic clutches are known, which can be done without operating a clutch lever starting. In this case, a centrifugal clutch is used, which actuates a main clutch in response to a rotational speed of a drive shaft. The operation of the clutch (disengagement and engagement) via a hand lever on the motorcycle is required only for switching operations, wherein the selection and switching of a gear ratio is done via a pedal.

On this basis, the present invention seeks to provide a release mechanism, in particular for a clutch mechanism of a motorcycle, by which the operation of a clutch is further simplified and can be omitted by the particular hand lever on a motorcycle.

This object is achieved with a release mechanism according to the features of the independent claim. Further advantageous embodiments of the invention are specified in the dependent formulated claims. The individually listed in the dependent formulated features can be combined in a technologically meaningful way and can define further embodiments of the invention. In addition, the features specified in the claims are specified and explained in more detail in the description, wherein further preferred embodiments of the invention are shown.

• - einen mit der Eingangswelle drehfest verbundenen Schwenkhebel sowie
• - eine Drehscheibe mit einer zweiten Drehachse und einem beabstandet von der zweiten Drehachse angeordneten Zapfen, wobei die Drehscheibe und der Schwenkhebel über eine Verbindung drehfest miteinander verbunden sind, so dass über eine Drehung der Eingangswelle und damit des Schwenkhebels um die erste Drehachse über die drehfeste Verbindung die Drehscheibe und der Zapfen um die zweite Drehachse drehbar sind; und
• - eine Hubscheibe mit einer Kulisse, in der der Zapfen geführt ist; wobei die Kulisse so gestaltet ist, dass bei der Drehung der Drehscheibe die Hubscheibe in einer radialen Richtung verlagerbar ist, wobei die Hubscheibe über eine Führung an der zweiten Drehachse bei der Verlagerung entlang der radialen Richtung geführt ist.

The invention relates to a release mechanism, in particular for a clutch mechanism, preferably for a motorcycle, at least comprising a housing, extending in an axial direction in the housing input shaft having a first axis of rotation, and in the housing

• - A rotatably connected to the input shaft pivot lever and
• - A hub with a second axis of rotation and a spaced apart from the second axis of rotation pins, wherein the hub and the pivot lever via a connection rotatably connected to each other, so that via a rotation of the input shaft and thus the pivot lever about the first axis of rotation on the rotationally fixed connection the turntable and the pin are rotatable about the second axis of rotation; and
• - A lifting disc with a backdrop in which the pin is guided; wherein the gate is designed so that upon rotation of the hub, the lifting disc is displaceable in a radial direction, wherein the lifting disc is guided via a guide on the second axis of rotation in the displacement along the radial direction.

In the disengagement mechanism, the rotational movement of the input shaft is converted into a stroke movement of the eccentric disk taking place here along the radial direction. Thus, in particular a Bowden cable, which are attached to the lifting disc, are actuated, wherein the Bowden cable is claimed by the release mechanism (exclusively) in the direction of extension thereof. A bending stress due to a usual deflection of the Bowden cable does not occur here in particular.

In particular, the input shaft is actuated via a shift drum of a clutch mechanism, which in turn is connected to a shift lever (eg foot pedal on a motorcycle). In particular, the disengagement or engagement of a clutch takes place via the shift lever, the shift drum and the disengagement mechanism, while the selection and shifting (ie, a change) of a transmission ratio (that is, for example, a gear change) continues to take place via the shift lever.

The non-rotatable connection between the turntable and pivot lever is formed in particular via a non-positive, preferably via a positive connection. As (relative to a circumferential direction) positive connection in particular a toothing is provided. In particular, the pivot lever has a first toothing and the hub on a second toothing, which cooperate with each other.

Form-fitting connections are created by the interaction of at least two connection partners. As a result, the connection partners can not solve without or with interrupted power transmission. In other words, in the case of a positive connection, one connection partner gets in the way of the other.

Positive connections require a normal force on the surfaces to be joined together. Their mutual displacement is prevented, as long as the counter-force caused by the static friction is not exceeded.

The pin is in particular at least partially (for example, in the area in which he contacted the backdrop) cylindrical. The pin is preferably non-rotatably connected to the hub (for example, pressed in the turntable, in one piece with the Turntable running, etc.), so that it is pivotable together with the turntable.

The guide is in particular a slot in the lifting disc, through which the second axis of rotation extends along the axial direction. The second axis of rotation can slide along the side walls of the guide or the slot in displacement of the lifting disk along the radial direction or guided.

The gate is in particular an opening in the Hubscheibe, in which the pin extends along the axial direction. By the gate, the lifting plate is displaced in a predetermined manner along the radial direction, when the pin is displaced relative to the lifting disc along a circumferential direction. In particular, the lifting disc is guided through the housing along the radial direction, so that a deflection of the lifting disc z. B. along the circumferential direction and / or along the axial direction is prevented.

In particular, a Bowden cable is attached to the lifting disc.

A Bowden cable (eg after DIN 71986 "Bowden cable") is in particular a movable machine element for transmitting a mechanical movement or a pressure or (train) force by means of a flexibly deployable combination of a wire rope and a stable in the direction of development sheath, z. As a connector, which is arranged in the present application on the lifting disc, so that the wire rope is actuated by the lifting disc.

In particular, the pin moves at a rotation (the turntable) about the second axis of rotation along a circumferential direction, wherein the link extending from a starting position of the pin in a first region at a first angle to the circumferential direction.

The starting position is in particular a position of the pin relative to the slide when the input shaft is not actuated. In an application z. B. in a motorcycle, the input shaft z. B. operated via a shift drum. In a non-actuated state, in particular no restoring forces are applied to the input shaft.

In particular, the first angle is aligned so that the hub is displaced in the circumferential direction, starting from the initial position, towards the first axis of rotation upon rotation of the hub and the pin.

In particular, the scenery is designed so that when a reverse rotation of the hub in the starting position, the lifting disc is displaced away from the first axis of rotation.

In particular, the gate extends in a second area adjoining the first area at a second angle to the circumferential direction, which is smaller than the first angle. The first angle and the second angle are in particular rectified relative to the circumferential direction.

In particular, the first region and the second region directly merge into one another. It is also possible that a transition region is arranged between the first region and the second region, wherein in the transition region the first angle is converted into the second angle (continuously or stepwise, that is to say successively).

Preferably, the second angle (in terms of absolute value) is at most 50% of the first angle (that is to say, for example, 40 angular degrees and 20 degrees of angle), in particular at most 30%, preferably at most 20%.

Preferably, the backdrop is designed mirror-symmetrically relative to the starting position. In particular, such an upshifting and downshifting of the gearbox ratios can take place via the disengaging mechanism, wherein the clutch can be disengaged or engaged in both switching operations.

Starting from the first axis of rotation and along a radial direction, the second axis of rotation between the first axis of rotation and the pin is arranged.

It is further proposed a clutch mechanism for selecting and switching a gear ratio, comprising at least the already described Ausrückmechanismus, a clutch and a rotatable shift drum which is operable in selecting and switching the gear ratio, wherein by the rotation of the shift drum, the input shaft of the release mechanism is rotatable ; wherein by the rotation of the input shaft, the clutch off and can be engaged again and wherein on the shift drum selecting and switching the gear ratio is done.

The comments on the release mechanism apply equally to the clutch mechanism and vice versa.

In particular, starting from an initial position of the pin, the gate has a first area and subsequently a second area, wherein, when the pin is arranged in the first area, an actuation of the coupling takes place and, if the pin is arranged in the second area, a shift of the gear ratio takes place.

There is further proposed a motorcycle having a clutch mechanism already described, comprising at least one transmission having a plurality of shiftable transmission ratios and a driver operable shift lever (eg, a foot pedal) for operating the shift drum, wherein actuation of the clutch and selecting and shifting a gear ratio is done exclusively via the shift lever.

By way of precaution, it should be noted that the numerical terms used here ("first", "second",...) Primarily (only) serve to distinguish a plurality of similar objects, variables or processes, ie in particular no dependence and / or order of these objects, quantities or mandate processes to one another. If a dependency and / or order are required, this is explicitly stated here or it obviously results for the person skilled in the art when studying the concretely described embodiment.

• 1: ein Motorrad;
• 2: einen (nicht erfindungsgemäßen) Ausrückmechanismus in einer Ansicht entlang einer axialen Richtung;
• 3: einen Teil des Ausrückmechanismus nach 2 in einer perspektivischen Ansicht;
• 4: den Ausrückmechanismus nach 2 in einer Seitenansicht;
• 5: einen Ausrückmechanismus in einer perspektivischen Ansicht; und
• 6: den Ausrückmechanismus nach 5 in einer Seitenansicht.

The invention and the technical environment will be explained in more detail with reference to FIGS. It should be noted that the invention should not be limited by the embodiments shown. In particular, unless explicitly stated otherwise, it is also possible to extract partial aspects of the facts explained in the figures and to combine them with other components and findings from the present description and / or figures. In particular, it should be noted that the figures and in particular the illustrated proportions are only schematic. The same reference numerals designate the same objects, so that explanations of other figures can be used if necessary. Show it:

• 1 : a motorcycle;
• 2 a release mechanism (not according to the invention) in a view along an axial direction;
• 3 : a part of the release mechanism after 2 in a perspective view;
• 4 : the release mechanism after 2 in a side view;
• 5 a release mechanism in a perspective view; and
• 6 : the release mechanism after 5 in a side view.

1 shows a motorcycle 25 , The motorcycle 25 includes a clutch mechanism 22 for selecting and switching a gear ratio with a release mechanism 1 , Next, the coupling mechanism 22 a clutch 23 and a rotatable shift drum 24 which is operable in the selection and switching of the gear ratio, wherein by the rotation of the shift drum 24 the input shaft 4 the release mechanism 1 is rotatable, wherein by the rotation of the input shaft 4 the coupling 23 off and again engageable and being on the shift drum 24 selecting and switching the gear ratio is done. The motorcycle 25 further includes a transmission 26 with multiple shiftable transmission ratios and a shift lever operable by a driver 27 (eg a pedal) for operating the shift drum 24 , wherein an actuation of the clutch 23 and selecting and shifting a transmission ratio exclusively via the shift lever 27 he follows.

2 shows a (not according to the invention) release mechanism 1 in a view along an axial direction 3 , 3 shows a part of the release mechanism 1 to 2 in a perspective view. 4 shows the release mechanism 1 to 2 in a side view.

The release mechanism 1 has a housing 2 on and one in an axial direction 3 in the case 2 extending input shaft 4 with a first axis of rotation 5 , In the case 2 are one with the input shaft 4 rotatably connected pivot lever 6 as well as a turntable 7 with a second axis of rotation 8th and a distance from the second axis of rotation 8th arranged connection piece of a Bowden cable 15 arranged, the turntable 7 and the pivot lever 6 via a positive connection 10 (namely a first toothing 28 on the pivot lever 6 and a second gearing 29 at the turntable 7 ) are rotationally connected to each other, so that via a rotation of the input shaft 4 and thus the pivot lever 6 around the first axis of rotation 5 over the non-rotatable connection 10 the turntable 7 and the connecting piece of the Bowden cable 15 around the second axis of rotation 8th are rotatable together. The turntable 7 is directly with a Bowden cable 15 connected so that about the rotation of the turntable 7 the Bowden cable 15 is operable.

5 shows a release mechanism 1 in a perspective view. 6 shows the release mechanism 1 to 5 in a side view.

In contrast to the embodiment according to 2 to 4 The release mechanism here comprises a lifting disc 11 with a backdrop 12 in which the pin 9 is guided; being the backdrop 12 designed so that when turning the turntable 7 the lifting disc 11 in a radial direction 13 is displaceable, the lifting disc 11 about a guide 14 at the second axis of rotation 8th at the displacement along the radial direction 13 is guided.

In this release mechanism 1 becomes the rotational movement of the input shaft 4 in one, here along the radial direction 13 Successful lifting movement of the lifting disc 11 transformed. This can be a Bowden cable 15 who is at the Hubscheibe 11 is attached, operated, the Bowden cable 15 through the release mechanism 1 (Exclusively) claimed in its extension direction. A bending stress due to a usual deflection of the Bowden cable 15 (please refer 2 to 4 ) does not occur here.

The input shaft 4 is via a shift drum 24 a clutch mechanism 22 operated, in turn, with a shift lever 27 (eg foot pedal on a motorcycle 25 , please refer 1 ) connected is. Over the shifter 27 , the shift drum 24 and the release mechanism 1 the disengagement or engagement of a clutch takes place 23 while over the shifter 27 Furthermore, the selection and switching (that is, for example, a change) of a transmission ratio (that is, for example, a gear change) takes place.

The pin 9 is at least partially (here also in the area where he is the backdrop 12 contacted) cylindrical. The pin 9 is rotatable with the turntable 7 connected so that he together with the turntable 7 is pivotable.

The leadership 14 is as a slot in the Hubscheibe 11 running through it along the axial direction 3 the second axis of rotation 8th extends. The lifting disc 11 gets through the side walls of the guide 14 or the slot upon displacement of the lifting disc 11 along the radial direction 13 opposite the second axis of rotation 8th guided.

The scenery 12 is an opening in the lifting disc 11 , in which the pin 9 along the axial direction 3 extends. Through the scenery 12 becomes the lifting disc 11 in a predetermined manner along the radial direction 13 shifts when the pin 9 opposite the lifting disc 11 along a circumferential direction 16 is relocated. The lifting disc 11 is through the housing 2 along the radial direction 13 guided, so that a deflection of the lifting disc 11 z. B. along the circumferential direction 16 and / or along the axial direction 13 is prevented.

The Bowden cable 15 is at the Hubscheibe 11 attached.

The pin 9 moves at a rotation of the turntable 7 around the second axis of rotation 8th along a circumferential direction 16 , taking the backdrop 12 starting from a starting position 17 (please refer 5 ) of the pin 9 in a first area 18 at a first angle 19 to the circumferential direction 16 extends.

The first angle 19 is aligned so that the lifting disc 11 with rotation of the turntable 7 and the pin 9 in the circumferential direction 16 , starting from the starting position 17 , towards the first axis of rotation 5 is relocated.

The scenery 12 designed so that when a reverse rotation of the turntable 7 in the starting position 17 , the lifting disc 11 from the first axis of rotation 5 is relocated away. The scenery 12 extends in one to the first area 18 subsequent second area 20 at a second angle 21 to the circumferential direction 16 which is smaller than the first angle 19 , The first angle 19 and the second angle 21 are opposite the circumferential direction 16 rectified.

In particular, go the first area 18 and the second area 20 directly into each other.

The scenery 12 is mirror-symmetrical with respect to the starting position 17 designed. This can be used to upshift and downshift the transmission ratios via the release mechanism 1 take place, the clutch 23 in both switching operations off or is engageable.

Starting from the first axis of rotation 5 and along a radial direction 13 is the second axis of rotation 8th between the first axis of rotation 5 and the pin 9 arranged.

LIST OF REFERENCE NUMBERS

1

release mechanism

2

casing

3

axial direction

4

input shaft

5

first axis of rotation

6

pivoting lever

7

turntable

8th

second axis of rotation

9

spigot

10

connection

11

lifting

12

scenery

13

radial direction

14

guide

15

Bowden

16

circumferentially

17

starting position

18

first area

19

first angle

20

second area

21

second angle

22

clutch mechanism

23

clutch

24

shift drum

25

motorcycle

26

transmission

27

gear lever

28

first gearing

29

second gearing

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited non-patent literature

• DIN 71986 [0015]

Claims (10)

Release mechanism (1), comprising at least one housing (2), an input shaft (4) extending in an axial direction (3) into the housing (2) with a first axis of rotation (5), and in the housing (2) - One with the input shaft (4) rotatably connected pivot lever (6) and - A hub (7) with a second axis of rotation (8) and a spaced from the second axis of rotation (8) arranged pin (9), wherein the hub (7) and the pivot lever (6) via a connection (10) rotatably connected to each other are such that via a rotation of the input shaft (4) and thus of the pivot lever (6) about the first axis of rotation (5) via the rotationally fixed connection (10), the hub (7) and the pin (9) about the second axis of rotation (8 ) are rotatable; and - A lifting disc (11) with a link (12) in which the pin (9) is guided; wherein the gate (12) is designed so that during the rotation of the turntable (7) the lifting disc (11) in a radial direction (13) is displaceable, wherein the lifting disc (11) via a guide (14) on the second axis of rotation (8) is guided in the displacement along the radial direction (13). Release mechanism (1) after Claim 1 , wherein a Bowden cable (15) is attached to the lifting disc (11). Release mechanism (1) according to one of the preceding claims, wherein the pin (9) moves along a circumferential direction (16) during rotation about the second axis of rotation (8), the link (12) starting from a starting position (17) of the Spigot (9) in a first region (18) at a first angle (19) to the circumferential direction (16). Release mechanism (1) after Claim 3 wherein the slide (12) extends in a second region (20) adjoining the first region (18) at a second angle (21) to the circumferential direction (16), which is smaller than the first angle (19). Release mechanism (1) after Claim 4 wherein the second angle (21) is at most 50% of the first angle (19). Release mechanism (1) according to one of the preceding claims, wherein the link (12) is designed mirror-symmetrically with respect to the starting position (17). Release mechanism (1) according to one of the preceding claims, wherein, starting from the first axis of rotation (5) along the radial direction (13), the second axis of rotation (8) between the first axis of rotation (5) and the pin (9) is arranged. A clutch mechanism (22) for selecting and shifting a transmission ratio, comprising at least the release mechanism (1) according to any one of the preceding claims, a clutch (23) and a rotatable shift drum (24) operable in selecting and shifting the transmission ratio, wherein the rotation of the shift drum (24) is rotatable about the input shaft (4) of the disengagement mechanism (1); wherein by the rotation of the input shaft (4) the clutch (23) off and is again engageable and wherein via the shift drum (24), the selection and switching of the gear ratio is carried out. Clutch mechanism (22) after Claim 8 in which the link (12), starting from an initial position (17) of the pin (9), has a first area (18) and subsequently a second area (20), wherein, when the pin (9) in the first area (18 ) is arranged, an actuation of the clutch (23) takes place and, when the pin (9) is arranged in the second region (20), a switching of the gear ratio is carried out. Motorcycle (25) with a coupling mechanism (22) according to one of the preceding Claims 8 and 9 at least comprising a gearbox (26) having a plurality of switchable gearbox ratios and a driver-operable gearshift lever (27) for operating the shift drum (24), wherein actuation of the clutch (23) and selection and switching of gearbox gearbox exclusively via the gearshift lever (23) 27) takes place.

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