Industrial Technology Research Institute

Caesar Chen

Ching-Huei Wu

Jung-Ping Chiang

Yu-Ming Huang

Chung-Ping Chiang

Ching-Huan Tseng

Pai-Hsiang Hsu

Jia-Lin Chen

Ching-Wen Liu

Yann-Jy Yang

A speed-changing control mechanism of a multistage speed-changing wheel hub has a planetary gear device comprising a gear support and a plurality of planetary gears. The planetary gears are respectively engaged with a ring gear and sun gears. The rotational power of a drive member is transmitted to the ring gear or the gear support via a sleeve. A speed ratio change is brought about by the action of the planetary gears and the sun gears. The power is finally transmitted to the wheel hub via the gear support or the ring gear. The planetary gears are driven by the power input source portion of the sleeve in conjunction with the action of another sleeve on the fastening shaft, thereby controlling two sets of one-way ratchet pawls opposite in direction to engage or disengage. As a result, the input of the power source and degrees of freedom of the sun gears can be controlled by the use of the control slot, thereby preventing the interference between the retaining slot and the control key and eliminating the complicated power shifting mechanism.

Speed-changing control mechanism of multistage speed-changing wheel hub

An electric auxiliary apparatus for a bicycle mainly comprises an electric motor, a gear reduction mechanism, a power combination mechanism, and a pedal force sensing mechanism, wherein the gear reduction mechanism includes a planetary gear assembly, a bevel gear assembly, and two reduction gears; the power combination mechanism comprises two chain-wheel seats, two elastic member seats, two elastic members, and two single-direction clutches, the pedal force sensing mechanism primarily includes a sensing sliding seat, a magnet, a magnetizable member, a restoring spring, and a sensor.

Electric auxiliary apparatus for bicycle

The present invention relates to a cushion mechanism for a brake of a bicycle, comprising a brake block, an elastomer, a sleeve, and an adjustable nut. The brake block includes an engaging end which extends through the elastomer and the sleeve and is engaged with the adjustable nut. Then the cushion mechanism is installed on a brake caliper. The cushion mechanism of the brake is constructed to prevent a sudden lock of the wheel upon an emergency brake and such an effect is achieved by mounting an elastomer between the brake block and the brake caliper. The elastomer is preset with pressure while being assembled. The preset pressure enables the elastomer to absorb a less force caused by braking when under normal braking operation; and enables the same elastomer to absorb excess force when the braking force exceeds the normal range. Thus, the braking force will not reduce, and the safety for the rider is secured.

Cushion mechanism for a brake of a bicycle

A self-contained change speed apparatus for use on a bicycle. It has fixed shaft, a hub body rotatably supported on the fixed shaft, a change speed device controlled to turn the hub body about the fixed shaft at one of a series of speeds, and a power input member adapted to provide driving power, A clutch is moved between an active position and a non-active position and adapted to transmit driving power from the power input member to the change speed device. A control mechanism changes the speed ratio of the change speed device, advances the clutch to the non-active position before changing the speed of the change speed device, and delays the movement of the clutch to the active position, for permitting driving power to be returned to the change speed device after a change of the speed ratio of the change speed device.

Self-contained change speed apparatus for use on a bicycle

The present invention relates to a speed-changing transmission hub for a bicycle comprising: a central shaft; a controlling device; a planetary gear system, which comprises a planet gear holder, holding several planet gears; a second ring gear; a first ring gear; and two sun gears. Variations of speed are realized by separately fixing the sun gears of different diameters. There is no switching of input and no reversal of the rotation of the sun gears. The sun gears only need to be controlled by a one-way clutch guided by the controlling device, which is mounted on the central shaft. Thereby the arrangement is simplified and its weight is reduced.

Growing community of inventors

Taipei, Taiwan

Caesar Chen