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US 12,735,143 B2Granted
Drive assembly for a bicycle, and bicycle
AssigneeZF Friedrichshafen AG
InventorPeter Ziemer
Life of this patent
Estimating the term…
Abstract
The present invention relates to a drive assembly (100; 200; 300; 400; 500) for a bicycle. The drive assembly (100; 200; 300; 400; 500) has a bottom bracket gearbox (10), a prime mover (18) and a planetary assembly (110, 412). The planetary assembly (110, 412) includes a first planetary gear set (110) having a first rotary element, a second rotary element and a third rotary element. The drive assembly (100; 200; 300; 400; 500) has a stationary component (22) and a first brake shift element (B1). The first rotary element is mechanically operatively connected to the output (20) of the prime mover (18). The second rotary element is in the form of an output of the planetary assembly (110). The third rotary element is rotationally fixable on the stationary component (22) by the brake shift element (B1).
Claims20
A drive assembly (100;
- 200;
- 300;
- 400;
- 500) for a bicycle, comprising:
- a bottom bracket gearbox (10) with an input and an output, the bottom bracket gearbox (10) configured for transmitting torque to a wheel (14) of the bicycle;
- a prime mover (18) having a prime mover output (20);
- a planetary assembly (110, 412) configured to transmit torque from the prime mover output (20) of the prime mover (18) to the wheel (14) of the bicycle, the planetary assembly (110, 412) comprising:
- a first planetary gear set (110) comprising a first rotary element, a second rotary element, and a third rotary element, the first planetary gear set (110) being a negative planetary gear set, the first rotary element being a first sun gear (112), the second rotary element being a first planet carrier (114), and the third rotary element being a first ring gear (116);
- and
- a second planetary gear set (420) with a fourth rotary element, a fifth rotary element, and a sixth rotary element, the second planetary gear set (420) being a negative planetary gear set with the fourth rotary element being a sun gear (422), the fifth rotary element being a planet carrier (424), and the sixth rotary element being a ring gear (426);
- a stationary component (22);
- a first brake shift element (B1);
- and
- a third brake shift element (B3),
- wherein the first rotary element is mechanically operatively connected to the prime mover output (20) of the prime mover (18), the second rotary element forms an output of the planetary assembly (110), and the third rotary element is rotationally fixable on the stationary component (22) by the first brake shift element (B1).
12 more elements
A drive assembly (100;
- 200;
- 300;
- 400;
- 500) for a bicycle, comprising:
- a bottom bracket gearbox (10) with an input and an output, the bottom bracket gearbox (10) configured for transmitting torque to a wheel (14) of the bicycle;
- a prime mover (18) having a prime mover output (20);
- a planetary assembly (110, 412) configured to transmit torque from the prime mover output (20) of the prime mover (18) to the wheel (14) of the bicycle, the planetary assembly (110, 412) comprising a first planetary gear set (110) comprising a first rotary element, a second rotary element, and a third rotary element;
- a stationary component (22);
- a first brake shift element (B1);
- and
- a second brake shift element (B2) via which either the first rotary element or the second rotary element is rotationally fixed on the stationary component (22),
- wherein the first rotary element is mechanically operatively connected to the prime mover output (20) of the prime mover (18), the second rotary element forms an output of the planetary assembly (110), and the third rotary element is rotationally fixable on the stationary component (22) by the first brake shift element (B1).
9 more elements
A drive assembly (100;
- 200;
- 300;
- 400;
- 500) for a bicycle, comprising:
- a bottom bracket gearbox (10) with an input and an output, the bottom bracket gearbox (10) configured for transmitting torque to a wheel (14) of the bicycle;
- a prime mover (18) having a prime mover output (20);
- a planetary assembly (110, 412) configured to transmit torque from the prime mover output (20) of the prime mover (18) to the wheel (14) of the bicycle, the planetary assembly (110, 412) comprising:
- a first planetary gear set (110) comprising a first rotary element, a second rotary element, and a third rotary element;
- and
- a second planetary gear set (420) with a fourth rotary element, a fifth rotary element, and a sixth rotary element, the second planetary gear set (420) being a negative planetary gear set with the fourth rotary element being a sun gear (422), the fifth rotary element being a planet carrier (424), and the sixth rotary element being a ring gear (426);
- a stationary component (22);
- a first brake shift element (B1);
- and
- a third brake shift element (B3),
- wherein the first rotary element is mechanically operatively connected to the prime mover output (20) of the prime mover (18), the second rotary element forms an output of the planetary assembly (110), and the third rotary element is rotationally fixable on the stationary component (22) by the first brake shift element (B1), and
- wherein the fourth rotary element is mechanically operatively connected to the prime mover output (20) of the prime mover (18), the fifth rotary element is permanently connected to the second rotary element for conjoint rotation, and the sixth rotary element is rotationally fixable on the stationary component (22) by the third brake shift element (B3).
13 more elements
Dependencies are inferred from the claim text.