Bicycle driving device
AssigneeGokiso Giken Co., Ltd.
InventorYutaka Kondo
Life of this patent
Estimating the term…
Abstract
A bicycle driving device including a shaft rotatably mounted on a part of a body frame; two crank arms perpendicularly disposed at both ends of the shaft so as to be symmetrical with each other at 180° with respect to a center of the shaft as a base point; a pedal attached to a tip of the crank arm; a gear mounted at one end of the shaft, which is provided with a chain; and balance weights disposed in a predetermined plane parallel to a surface formed by a rotary motion of the crank arm for generating kinetic energy equivalent to the kinetic energy generated by rotary motion of the crank arm and the pedal, wherein each mount position of those balance weights is set to be adjustable in an arc with a predetermined radius with respect to an axial center of the shaft.
Claims11
A bicycle driving device comprising:
- a shaft rotatably mounted on a part of a body frame;
- two crank arms perpendicularly disposed at both ends of the shaft so as to be symmetrical with each other at 180° with respect to a center of the shaft as a base point;
- a pedal attached to a tip of the crank arm;
- a gear mounted at one end of the shaft, which is provided with a chain;
- and
- balance weights disposed in a predetermined plane parallel to a surface formed by a rotary motion of the crank arm for generating kinetic energy equivalent to the kinetic energy generated by rotary motion of the crank arm and the pedal, wherein each mount position of those balance weights is set to be adjustable in an arc with a predetermined radius with respect to an axial center of the shaft.
A bicycle driving device comprising:
- a shaft rotatably mounted on a part of a body frame;
- two crank arms perpendicularly disposed at both ends of the shaft so as to be symmetrical with each other at 180° with respect to a center of the shaft as a base point;
- a pedal attached to a tip of the crank arm;
- a gear mounted at one end of the shaft, which is provided with a chain;
- and
- a balance weight mounted on one surface of the gear for generating kinetic energy equivalent to the kinetic energy generated by rotary motion of the crank arm and the pedal on an extension of a longitudinal center line of the crank arm at one side, wherein a mount position of the balance weight is adjusted in an arc with a predetermined radius with respect to an axial center of the shaft.
A bicycle driving device comprising:
- a shaft rotatably mounted on a part of a body frame;
- two crank arms perpendicularly disposed at both ends of the shaft so as to be symmetrical with each other at 180° with respect to a center of the shaft as a base point;
- a pedal attached to a tip of the crank arm;
- a disk-like gear mounted at one end of the shaft, which is provided with a chain;
- and
- a balance weight mounted on one surface of a disk-like member parallel to the gear on an extension of a longitudinal center line of any one of the crank arms so as to be slidably movable in a radiation direction of the disk-like member.
A bicycle driving device comprising:
- a shaft rotatably mounted on a part of a body frame;
- two crank arms perpendicularly disposed at both ends of the shaft so as to be symmetrical with each other at 180° with respect to a center of the shaft as a base point;
- a pedal attached to a tip of the crank arm;
- a gear mounted at one end of the shaft, which is provided with a chain;
- a first balance weight mounted on a surface at one end of the shaft on an extension of a longitudinal center line of any one of the crank arms;
- a fly wheel with a disk-like shape, mounted at the other end of the shaft;
- and
- a second balance weight mounted on a surface of the fly wheel on an extension of a longitudinal center line of the other crank arm so as to have its mount position adjustable on a circumferential surface of the fly wheel in the circumferential direction.
Dependencies are inferred from the claim text.