Patent ID: 8641073
Filing Date: 2014-02-04
Classification: B62J,B62K

Abstract:
1. An apparatus for adjusting a height of a saddle for a bicycle, the apparatus comprising: a saddle lift device moving the saddle upwards or downwards, thus adjusting the height of the saddle; and a controller controlling operation of the saddle lift device, wherein the saddle lift device comprises: a motor generating a rotating force; a lift body coupled to the saddle of the bicycle, the lift body being moved upwards or downwards; an actuating member receiving the rotating force from the motor and moving the lift body upwards or downwards; and a rotating force transmission unit transmitting the rotating force from the motor to the actuating member, wherein the actuating member comprises a screw disposed upright below the saddle of the bicycle, the screw being threadedly coupled to the lift body, and the rotating force transmission unit comprises: a first power transmitting member mounted to a motor shaft of the motor, the first power transmitting member rotating integrally with the motor shaft in a direction corresponding to a direction in which the lift body is moved downwards while being prevented from rotating in a reverse direction; a second power transmitting member having a diameter smaller than a diameter of the first power transmitting member, the second power transmitting member being mounted to the motor shaft and rotating integrally with the motor shaft in a direction corresponding to a direction in which the lift body is moved upwards while being prevented from rotating in a reverse direction; a third power transmitting member having a diameter smaller than the diameter of the first power transmitting member, the third power transmitting member being mounted to the screw and being rotated by the rotating force transmitted thereto from the first power transmitting member; and a fourth power transmitting member having a diameter larger than the diameter of the second power transmitting member, the fourth power transmitting member being mounted to the screw and being rotated by the rotating force transmitted thereto from the second power transmitting member.