Crank treading torque detection device for electric bicycle

專利類型

發明

專利國別 (專利申請國家)

美國

專利申請案號

15/263,788

專利證號

US 10,167,049 B2

專利獲證名稱

Crank treading torque detection device for electric bicycle

專利所屬機關 (申請機關)

國立成功大學

獲證日期

2019/01/01

技術說明

發明係提供一種可偵測曲柄軸二端踩踏扭力之電助自行車扭矩檢測裝置，本發明之踩踏扭力與馬達動力均經由對應的單向傳動裝置連結於套設在該曲柄軸外之中空軸而傳遞到傳動鏈輪；扭力檢知單元，係設於該中空軸上，且係位於該第一單向傳動裝置及第二單向傳動裝置之間；藉之，可令中置馬達與腳踏之動力傳輸互不影響，且當扭力檢知單元感測到高於設定的踩踏扭力值時，可令中置馬達提供適當之電助力，將檢知的扭力值降低至設定的踩踏扭力值。本發明能使整個中置的電助系統體積精小，踩踏扭力控制簡單且不受到外界環境的影響。 A treading torque detection device includes a pre-set trading torque and a motor. The torque from the pre-set trading torque and the torque from the motor are respectively connected to a hollow tube mounted to an axle via a first one-way transmission device and a second one-way transmission device. The two respective powers are transmitted to a chainwheel by the hollow tube. A torque detection unit us connected to the hollow tube and located between the first and second one-way transmission devices. The power from the motor and the treading torques from the two ends of the axle do not affect to each other. When the torque detection unit detects a torque that is higher than the pre-set trading torque, the motor is activated to provide power, and the detected torque is reduced to the pre-set torque.

備註

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