Gear transmission with stepless adjustable translation
OwnerMatthias Bergerinventor
Life of this patent
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Abstract
The invention relates to a gear transmission with a steplessly adjustable translation ratio for converting of rotary speeds and of torques of shafts. The uniform rotary motion of a drive shaft is transferred to a driven shaft with the aid of time staggered operating gear transmission units. The rotary motion is transformed by a cam transmission initially into a uniform translational motion and in the following this uniform translational motion is transformed into another, also uniform translational motion, with a speed depending on the translation ratio setting with a translation device. Finally this translational motion is transferred again into a uniform rotary motion by a further planar cam transmission and transferred to the driven shaft.
Claims22
A transmission gear with the steplessly adjustable translation comprising
- a drive shaft (4);
- a driven shaft (37);
- a first gear transmission unit (I) including
- a first force transmission means connected to the drive shaft wherein the first force transmission means transforms a first uniform rotary motion of the drive shaft into a first uniform translation motion during a first force transmission phase;
- a first changeable translation device (48) connected to the first force transmission means, wherein the first changeable translation device converts the first uniform translation motion into a second uniform translation motion with a speed depending on a chosen value of a translation setting during the first force transmission phase while the translation setting is maintained at the chosen value;
- a second force transmission means (14) connected to the first changeable translation device (48) and including a first cam transmission (11, 12, 13, 49, 50) and wherein the second force transmission means transforms the second uniform translation motion into a second uniform rotary motion during the first force transmission phase while the translation setting is maintained at the chosen value;
- a first switchable or automatically switching coupling (51) connected to the second force transmission means (14) and to the driven shaft (37), wherein the first switching coupling transfers the second uniform rotary motion to the driven shaft during the first force transmission phase while the translation setting is maintained at the chosen value;
- a second gear transmission unit (II) including
- a third force transmission means (1a) connected to the drive shaft (4) wherein the third force transmission means transforms the first uniform rotary motion of the drive shaft into a third uniform translation motion during a second force transmission phase;
- a second changeable translation device (48a) connected to the third force transmission means (1a), wherein the second changeable translation device converts the third uniform translation motion into a fourth uniform translation motion with a speed depending on the chosen value of the translation setting during the second force transmission phase while the translation setting is maintained at the chosen value;
- a fourth force transmission means (14a) connected to the second changeable translation device (48a) and including a second cam transmission (11a, 12a, 13a, 49a, 50a) and wherein the fourth force transmission means transforms the fourth uniform translation motion into a third uniform rotary motion during the second force transmission phase while the translation setting is maintained at the chosen value;
- a second switchable or automatically switching coupling (51a) connected to the fourth force transmission means (14a) and to the driven shaft (37), wherein the second switching coupling transfers the third uniform rotary motion to the driven shaft during the second force transmission phase while the translation setting is maintained at the chosen value;
- wherein the rotary motion of the drive shaft (4) is sequentially and intermittently transferred to the driven shaft (37) by the first gear transmission unit (I) during the first force transmission phase and, respectively, by the second gear transmission unit (II) during the second force transmission phase.
A gear transmission with the steplessly adjustable translation ratio, wherein the rotary motion of a drive shaft (4) is intermittently transferred for in each case a time period designated as force transmission phase to a driven shaft (37) by at least two time staggered operating gear transmission units (I, II), wherein each gear transmission unit comprises a first force transmission means (1), a changeable translation ratio device and a second force transmission means (14) as well as an automatic switching or switchable coupling (51) and wherein the first force transmission means (1) converts the uniform rotary motion of the drive shaft (4) into a uniform translation motion in the force transmission phase under the precondition of a just constant maintained translation ratio setting, wherein the translation device converts this motion into another, also uniform translation motion with a speed depending on the translation ratio setting and wherein the second force transmission means (14) transforms this translational motion into a uniform rotary motion, wherein the uniform rotary motion is transferred to the driven shaft (37) through the coupling, wherein the second force transmission means (14) includes a cam gear transmission (11, 12, 13, 49, 50).
Dependencies are inferred from the claim text.