Electric bicycle middle drive motor with auxiliary power effect

Abstract

The invention relates to an electric bicycle middle drive motor with an auxiliary power effect. The electric bicycle middle drive motor with the auxiliary power effect comprises a pedal spindle, a sideslip separation and reunion nut, a clutch inner mandrel, a retarder, a one-way clutch and a motor. The pedal spindle is sleeved with the sideslip separation and reunion nut which is connected with the pedal spindle through a transmission thread; one side of the sideslip separation and reunion nut is fixedly connected with a bicycle chain wheel; the pedal spindle is sleeved with the clutch inner mandrel, a first bevel face is arranged on the side, opposite to the sideslip separation and reunion nut, of the clutch inner mandrel, and a second bevel face matched with the first bevel face is arranged on the side, away from the bicycle chain wheel, of the sideslip separation and reunion nut; and an output shaft of the motor is connected with the clutch inner mandrel through the retarder, and the one-way clutch is mounted between the retarder and the clutch inner mandrel. The sideslip separation and reunion nut and the one-way clutch are adopted for the electric bicycle middle drive motor with the auxiliary power effect, the motor is freely separated from or reunited with the bicycle chain wheel in the form of auxiliary power according to practical situations of manpower trampling, and bidirectional separation and reunion is achieved; and only after being linked to manpower trampling, can the motor output the auxiliary power, and the safety is high.

Description

technical field [0001] The invention relates to the field of electric bicycles, in particular to an electric bicycle auxiliary power mid-drive motor. Background technique [0002] As electric bicycles become more and more popular, people put forward higher requirements for their structure and power performance. According to the safety position of the drive motor, it is usually divided into front drive, rear drive and middle drive. For the familiar middle drive, it has the following advantages: low magnetic resistance, which is more labor-saving than front drive and rear drive; high-speed motor can be used, so it can be small in size and light in weight. , which can obtain a large output torque and is suitable for climbing; in addition, the mid-mounted motor is easy to install and maintain, so the mid-mounted drive is more and more widely used. [0003] However, the existing mid-mounted drive also has many shortcomings: first, the motor and human pedaling independently cont...

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Problems solved by technology

[0003] However, the existing mid-mounted drive also has many shortcomings: first, the motor and human pedaling independently control the crankset, and it is difficult to realize the coaxiality of the pedal shaft and the motor shaft, which is not conducive to installation and maintenance; , in order to realize the switching of the driving force, a one-way clutch is generally added between the pedal shaft and the motor shaft, that is, after the human pedaling starts, the motor outputs power, and when the manual pedaling stops, the motor cannot stop output immediately due to inertia. Poor safety; third, when manpower actively accelerates and the output power of the motor is less than manpower pedaling, manpower pedaling needs to apply force to drive the motor to rotate, resulting in additional output, which increases the burden on manpower

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