US 8,262,529 B2Granted

Continuously variable transmission and operating method therefor

AssigneeUMS Maschinenbau GmbH

InventorPeter Kobler

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Abstract

The invention relates to a continuously variable transmission (1) comprising a driven rotary part (2), a chassis (4) or housing, and a driving rotary part (3). The invention also relates to an associated operating method whereby the driven rotary part (2) or the chassis (4) or housing is coupled to a first guide or drive module (5,5′). A second guide module (14) is also provided, the two guide or drive modules (5,5′, 14) being connected to a chassis (4) or housing of the transmission (1) or an adjacent machine or installation part, such that the second guide module (14) can be displaced in relation to the first guide or drive module (5, 5′). Furthermore, the two guide or drive modules (5,5′, 14) are coupled to each other by means of at least two mechanisms, each consisting respectively of a first coupling module (7a-7d) and a second coupling module (8a-8d) which are mounted (9a-9d) or guided against each other and/or can mesh with each other. A transport displacement of the deflection angle co of the rotary displacement of the first or second coupling module (7a-7d, 8a-8d) in question is cyclically transferred to another rotary part (18), and the rotary axes of the rotary connections of a free wheel (16a-16d) are aligned.

Claims30

Dependent claims

A continuously variable transmission (1;31) to transfer a relative rotary motion between at least one first driven rotary part (2;32) and a housing on at least a second driving rotary part (3;33), the transmission comprising:

a) the first driven rotary part (2;32) or the housing being coupled with a first guide module (5,5′;35);
b) a second guide module (14) being provided;
c) the two guide modules (5,5′,14;35) being connected with the housing of the transmission (1;31) or with an adjacent part rotatably or swivelably mounted thereon, such that the second guide module (14) can be displaced with respect to the first guide module (5,5′;35);
d) the two guide modules (5,5′,14;35) being coupled with one another by means of at least two coupling mechanisms, each consisting of a first coupling module (7a-7d) and a second coupling module (8a-8d), which are mounted on one another or mesh with one another;
e) the first coupling module (7a-7d) of each coupling mechanism being coupled with the first guide module (5,5′;35), such that the first coupling module is rotatable around one of several rotational axes (M1,M2,M3,M4) which are parallel to its rotational straight line but excentric or fixed to one of several fastening points which are excentric to its rotational straight line;
f) the second coupling module (8a-8d) of each coupling mechanism is coupled with the second guide module (14), independent of the second coupling modules (8a-8d) of the remaining coupling mechanisms, mounted such that it can rotate around an axis common to all connected second coupling modules (8a-8d), the common axis not revolving excentrically during operation;
g) and the first coupling module (7a-7d) of each coupling mechanism being mounted on a rotational axis (M1, M2, M3, M4), whose distance from the point of rotation with the associated second coupling module (8a-8d) exhibits a specified radius (d1-d4);
h) the first or second coupling module (7a-7d;
8a-8d) of each coupling mechanism being coupled with at least a first rotary connection of a freewheel (16a-16d), whose other rotary connection is coupled with a third rotary part (18), such that a transport movement of the deflection angle of the rotary movement of the relevant first or second coupling module (7a-7d, 8a-8d) is cyclically transferred to the third rotary part (18), and the rotary axes of the rotary connections of the freewheel (16a-16d) being aligned with one another;
i) and the third rotary part (18) and the first driven and second driving rotary parts (2,3;32,33) being coupled each to different connections (19,23,25) of a differential transmission module (20).

7 more elements

A continuously variable transmission (1;31) comprising at least a first rotary part, and a second rotary part (33),

a) the first rotary part being coupled with a first guide module (5,5′;35);
b) a second guide module comprising a guide lever;
c) the first and second guide modules (5,5′14) being connected with a selected one of a housing of the transmission (1;31) and an adjacent installation part rotatably mounted thereon, such that the second guide module can be displaced with respect to the first guide module;
d) the two guide modules (5,5′,14;35) being coupled with one another by means of at least two mechanisms, each mechanism comprising a first coupling module (7a-7d) and a second coupling module (8a-8d) mounted (9a-9d) on one another;
e) the first coupling module (7a-7d) of each of the coupling mechanisms being coupled with the first guide module, such that it rotates around one of several rotational axes (M1,M2,M3,M4) which are parallel to its rotational straight line but excentric, or fixed to one of several fastening points which are excentric to, its rotational straight line;
f) while the other coupling module (8a-8d) of each of the coupling mechanisms is coupled with the second guide module (14), independent of the coupling modules (8a-8d) of the remaining coupling mechanisms, mounted such that it can rotate around an axis (11) common to all connected coupling modules (8a-8d, the common axis (11) not revolving excentrically during operation;
g) the first coupling module (7a-7d) of each coupling mechanism being mounted on a rotational axis (M1,M2,M3,M4), whose distance from the point of contact with the associated, second coupling module (8a-8d) exhibits a specified radius (dl-d4);
h) a selected one of the first and the second coupling module (7a-7d;
8a-8d) of each coupling mechanism being coupled with at least a first rotary connection of a freewheel (16a-16d), whose other rotary connection is coupled with a second rotary part (18), such that a transport movement of a deflection angle of the rotary movement of the relevant first or second coupling module (7a-7d, 8a-8d) is cyclically transferred to the second rotary part, and the rotary axes of the rotary connections of the freewheel (16a-16d) are aligned with one another;
and
i) the second rotary part, and the first rotary parte are coupled each to different connections (19,23,25) of a differential transmission module (20);
wherein the change in the distance between the rotational axis (M1,M2,M3,M4) at the first guide module (5,5′;35) and the pivot point at the second guide module (14) during a revolution of the guide modules (14;5,5′;35) around one another, or around the excentric rotary axis, results in a relative twisting of at least one of the first and the second coupling modules (7a-7d;
8a-8d), around its rotational axis (M1,M2,M3,M4).

10 more elements

Dependencies are inferred from the claim text.