Internally mounted bicycle transmission

A bicycle transmission comprising:

• a hub axle (10):
• a drive member (25) rotatable mounted around the hub axle (10):
• a hub body (70) rotatable mounted around the hub axle (10):
• a planetary gear mechanism (99,40,41,50) coupled between the drive member (25) and the hub body (70) for communicating rotational force from the drive member (25) to the hub body (70) through multiple rotational force transmission paths, the planetary gear mechanism (99,40,41,50) including:
• a planet gear (41) supported by a planet gear rack (40) for rotation around the hub axle (10);
• and
• a ring gear (50) engaging the planet gear (41). wherein the ring gear (50) includes a transmission pawl (55) that can be displaced between a first position for transmitting rotational motion between the ring gear (50) and the hub body (70) and a second position for inhibiting the transmission of rotational motion between the ring gear (50) and the hub body (70);
• a clutch (30) mounted around the hub axle (10), wherein the clutch (30) is movable in the direction of a longitudinal axis (X) of the hub axle (10) for selecting a rotational force transmission path through the planetary gear mechanism (99,40,41,50) and for selectively operating the transmission pawl (55);
• a clutch operator for operating the clutch (30);
• wherein the clutch (30) includes a first clutch member (31) and a second clutch member (32) capable of movement relative to each other in the direction of the axis (x) of the hub axle (10);
• wherein the first clutch member (31) and the second clutch member (32) move relative to each other when the drive member (25) rotates in a first rotational direction for causing the transmission pawl (55) to be in the first position for transmitting rotational motion between the ring gear (50) and the hub body (70),
• wherein the first clutch member (31) includes a first engagement component (31e), wherein the second clutch member (32) includes a second engagement component (32e) having an inclined surface (32g), and wherein the first engagement component (31e) slides against the inclined surface (32g) of the second engagement component (32e) when the drive member (25) rotates in the first rotational direction to cause the first clutch member (31) and the second clutch member (32) to move relative to each other in the direction of the axis (X) of the hub axle (10).

A bicycle transmission comprising:

• a hub axle (10);
• a drive member (25) rotatable mounted around the hub axle (10);
• a hub body (70) rotatable mounted around the hub axle (10);
• a planetary gear mechanism (99,40.41.50) coupled between the drive member (25) and the hub body (70) for communicating rotational force from the drive member (25) to the hub body (70) through multiple rotational force transmission paths, the planetary gear mechanism (99,40,41,50) including:
• a planet gear (41) supported by a planet gear rack (40) for rotation around the hub axle (10);
• and
• a ring gear (50) engaging the planet gear (41), wherein the ring gear (50) includes a transmission pawl (55) that can be displaced between a first position for transmitting rotational motion between the ring gear (50) and the hub body (70) and a second position for inhibiting the transmission of rotational motion between the ring gear (50) and the hub body (70);
• a clutch (30) mounted around the hub axle (10), wherein the clutch (30) is movable in the direction of a longitudinal axis (X) of the hub axle (10) for selecting a rotational force transmission path through the planetary gear mechanism (99,40,41,50) and for selectively operating the transmission pawl (55;
• a clutch operator for operating the clutch (30);
• wherein the clutch (30) includes a first clutch member (31) and a second clutch member (32) capable of movement relative to each other in the direction of the axis (X) of the hub axle (10);
• wherein the first clutch member (31) and the second clutch member (32) move relative to each other when the drive member (25) rotates in a first rotational direction for causing the transmission pawl (55) to be in the first position for transmitting rotational motion between the ring gear (50) and the hub body (70);
• wherein the first clutch member (31) includes a first contact surface (31d) for contacting the transmission pawl (55) and causing the transmission pawl (55) to be in the second position, and wherein the second clutch member (32) includes a second contact surface (32d) for contacting the transmission pawl (55) and causing the transmission pawl (55) to be in the second position.