A transmission for a system, in which a directed force is introduced eccentrically with respect to a main shaft of the transmission, comprising the main shaft which is rotatably mounted in relation to a stationary housing by a main shaft bearing, a sun gear which is fixedly connected to the housing being arranged concentrically around the main shaft, and at least one control housing that rotates around the housing, wherein the first section thereof acts on the main shaft in a rotationally fixed manner and a planetary wheel is rotatably mounted by a first rotary bearing on the second section thereof, said planetary gear meshing with the sun gear. According to the invention, a force transmission means is fastened to the control housing and a drive crank rigidly engages the first end on the planetary wheel, wherein a second end of the drive crank is mounted in an articulated manner on a crank arm, said crank arm being supported in relation to the control housing by a movable coupling means. The aim of the invention was to provide a transmission having structural dimensions which are as compact as possible in the axial direction of the main shaft. Said aim is achieved in that the movable coupling means is a linear guide which absorbs tilting torques transmitted by the crank arm.

The present disclosure related to an effort-saving crank structure (1) of a bicycle (8), which includes: a crank mechanism (10) having a crank (11), a shaft end gear (12) and a treadle end gear (13) disposed on the crank (11); a transmission mechanism (20) disposed in the crank (11) and having a rotation shaft (21) and a first gear (22) and a second gear (23) connected to the rotation shaft (21), the first gear (22) and the shaft end gear (12) are engaged for transmission, and the second gear (23) and the treadle end gear (13) are engaged for transmission; a rotation arm unit (30) having a first rotation arm (31) and a second rotation arm (32), two ends of the second rotation arm (32) are respectively connected to the first rotation arm (31) and the treadle end gear (13).

The present disclosure related to an effort-saving crank structure (1) of a bicycle (8), which includes: a crank mechanism (10) having a crank (11), a shaft end gear (12) and a treadle end gear (13) disposed on the crank (11); a transmission mechanism (20) disposed in the crank (11) and having a rotation shaft (21) and a first gear (22) and a second gear (23) connected to the rotation shaft (21), the first gear (22) and the shaft end gear (12) are engaged for transmission, and the second gear (23) and the treadle end gear (13) are engaged for transmission; a rotation arm unit (30) having a first rotation arm (31) and a second rotation arm (32), two ends of the second rotation arm (32) are respectively connected to the first rotation arm (31) and the treadle end gear (13).

A drive unit includes a decelerator rotatably supported by a housing, the decelerator including a first transmission gear, a second transmission gear having teeth of a smaller number than that of the first transmission gear, and a transmission shaft to transmit a rotation of the first transmission gear to the second transmission gear; and a bearing supporting the first transmission gear in the housing such that the first transmission gear is rotatable. A distance, in a first direction in which the transmission shaft extends in the housing, from a reference plane to teeth of the first transmission gear is less than a distance in the first direction from the reference plane to an innermost portion of the bearing, in which the reference plane passes through an outermost portion of the bearing and is perpendicular to the first direction.

A drive unit includes a decelerator rotatably supported by a housing, the decelerator including a first transmission gear, a second transmission gear having teeth of a smaller number than that of the first transmission gear, and a transmission shaft to transmit a rotation of the first transmission gear to the second transmission gear; and a bearing supporting the first transmission gear in the housing such that the first transmission gear is rotatable. A distance, in a first direction in which the transmission shaft extends in the housing, from a reference plane to teeth of the first transmission gear is less than a distance in the first direction from the reference plane to an innermost portion of the bearing, in which the reference plane passes through an outermost portion of the bearing and is perpendicular to the first direction.

A ride-on vehicle, such as for a child, includes a vehicle body and one or more wheels that support the vehicle body relative to a surface. At least one of the wheels includes a hub motor arrangement that provides a drive torque for propelling the vehicle. The hub motor arrangement includes a housing defining an interior space. An axle or other mounting element(s) define an axis of rotation of the housing. Preferably, the axle or other mounting element(s) do not pass completely through the housing. A motor drives the housing through a transmission. Preferably, the motor is a standard, compact motor that is positioned on the axis of rotation and can be laterally offset from a central plane of the housing. In some embodiments, a traction element is carried directly by the housing.

A ride-on vehicle, such as for a child, includes a vehicle body and one or more wheels that support the vehicle body relative to a surface. At least one of the wheels includes a hub motor arrangement that provides a drive torque for propelling the vehicle. The hub motor arrangement includes a housing defining an interior space. An axle or other mounting element(s) define an axis of rotation of the housing. Preferably, the axle or other mounting element(s) do not pass completely through the housing. A motor drives the housing through a transmission. Preferably, the motor is a standard, compact motor that is positioned on the axis of rotation and can be laterally offset from a central plane of the housing. In some embodiments, a traction element is carried directly by the housing.

A hybrid vehicle includes: an engine; an electric motor; a transmission; a main clutch; a primary gear configured to transmit rotational power from the engine to the main clutch; a pump including a driven shaft to which rotational power is input from the engine and the electric motor; a first one-way clutch configured to transmit power from the engine to the pump; and a second one-way clutch configured to transmit power from the electric motor to the pump. The first one-way clutch and the second one-way clutch are disposed around the input shaft and located between the primary gear and a gear train of the transmission.

A hybrid vehicle includes: an engine; an electric motor; a transmission; a main clutch; a primary gear configured to transmit rotational power from the engine to the main clutch; a pump including a driven shaft to which rotational power is input from the engine and the electric motor; a first one-way clutch configured to transmit power from the engine to the pump; and a second one-way clutch configured to transmit power from the electric motor to the pump. The first one-way clutch and the second one-way clutch are disposed around the input shaft and located between the primary gear and a gear train of the transmission.

A bicycle component includes a drive unit and a battery. The drive unit includes a housing mounted on a bicycle frame, a crankshaft provided to a first portion of the housing, and a propulsion assist motor provided to a second portion of the housing. The battery is electrical connected to the propulsion assist motor to supply electrical power to the propulsion assist motor. The propulsion assist motor includes a rotational axis extending in a direction intersecting a direction in which the crankshaft extends. At least part of the second portion and at least part of the battery are accommodated in the frame in a state in which the second portion and the battery are arranged next to each other in a direction parallel to the rotational axis of the propulsion assist motor and the battery is coupled to the second portion in an attachable and detachable manner.