Giant Manufacturing Co., Ltd.

Min-Chang Chen

Chung-Wei Lin

Chien-Hung Chen

Wei-Chieh Ho

A speed-changing method of bicycle suitable for controlling a gear ratio of a bicycle is provided. The bicycle has a front electronic derailleur, a rear electronic derailleur, a controller, and a controlling switch. The controller stores a gear-ratio table. The speed-changing method of bicycle includes the following steps. The controlling switch is triggered to generate a speed-increasing signal or a laborsaving signal. The controller controls the front and rear electronic derailleurs according to the speed-increasing signal or the laborsaving signal to increase the gear ratio along a speed-increasing path of the gear-ratio table or decrease the gear ratio along a laborsaving path of the gear-ratio table respectively. On the other hand, the front and rear electronic derailleurs are started simultaneously at a first switch point of the speed-increasing path or a second switch point of the laborsaving path, and the first switch point is different from the second switch point.

Speed-changing method of bicycle

An automatic control method suitable for a bicycle system is provided. The bicycle system has a gear ratio and a toque ratio formed by an auxiliary torque and a pedaling torque. The automatic control method includes following steps: sensing a pedaling cadence and the pedaling torque of the bicycle system in a riding state; setting a first cadence threshold and a second cadence threshold according to a preset pedaling cadence while the first cadence threshold is greater than the second cadence threshold; and determining whether the pedaling cadence is greater than the first cadence threshold or less than the second cadence threshold so as to set to increase or decrease the gear ratio. In addition, a bicycle system suitable for the automatic control method is also provided.

Bicycle system and automatic control system thereof

An automatic control shock absorber system for a bicycle is provided. The system includes one or more sensors. A controller outputs a control signal to a damping adjuster according to the one or more sensors, such that the damping adjuster controls level of damping force based on the sensors.

Automatic shock absorber system for bicycle

An apparatus for automatically controlling a shock absorber system for a bicycle comprises a position sensor system configured to detect information indicative of a position of a rider of the bicycle and a controller in communication with the position sensor system. The controller adjusts the shock absorber system based on the detected information. The adjusting of the shock absorber system can include adjusting a damping force of the shock absorber system and/or adjusting sag of the shock absorber system.

Automatic shock absorber system for a bicycle

A vehicle chassis includes: first and second chassis parts; a locking unit including a first engaging part that is pivoted to the first chassis part and that is formed with first and second engaging recesses, a second engaging part mounted on the second chassis part and formed with a tongue such that the tongue pushes the first engaging part to rotate from an unlocking position to a locking position and slides into the first recess during coupling of the first and second chassis parts; and a retaining unit including a retaining part that is pivoted to the first chassis part and that has an engaging end which extends into the second recess when the retaining part is disposed at a retaining position.

Vehicle chassis

A foldable bicycle has a frame unit and a positioning unit. The frame unit includes a front wheel unit disposed on a front frame rod, a rear wheel unit disposed on a rear frame rod and aligned with the front wheel unit along a longitudinal direction of the bicycle, and a horizontal pivot pin interconnecting the front and rear frame rods rotatably such that the pivot pin and rotating axes of the front and rear wheel units forming generally an isosceles triangle. The positioning unit positions the rear frame rod behind the front frame rod, and is operable to allow for rotation of the front and rear frame rods about the pivot pin so as to dispose the bicycle at a folded position, where the front and rear wheel units are aligned with each other along a transverse direction of the bicycle.

Foldable bicycle

A seat device includes: a seat-supporting post unit; a lower bracket secured to the seat-supporting post unit; a seat unit including an upper bracket that is pivoted to the lower bracket; first and second engaging members formed on the lower bracket; and a third engaging member movable between an engaging position and a releasing position. The third engaging member engages the first engaging member when the seat unit is disposed at the non-folded position and when the third engaging member is disposed at the engaging position. The third engaging member engages releasably the second engaging member when the seat unit is disposed at the folded position and when the third engaging member is disposed at the engaging position.

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Taichung, Taiwan

Min-Chang Chen