Ball centrifugal gear assembly, duplex gear and engine

Abstract

The invention discloses a ball centrifugal gear assembly, a duplex gear and an engine, including a transmission shaft, a driven gear, a thrust piece and a centrifugal drive piece; The driven gear is outside the transmission shaft in a way of engaging or separating; the thrust member is also applied with a preload away from the driven gear; it also includes a centrifugal drive seat that follows the drive shaft and is parallel to the thrust member in the axial direction. The opposite axial side of the drive seat and the thrust member is provided with a centrifugal drive groove that gradually becomes shallower radially outward, and the centrifugal drive member is located in the centrifugal drive groove; when the engine suddenly stops running at high speed and slides backward on a steep slope, it can be in an unloaded state. When the "anti-dragging" phenomenon occurs, the transmission chain is disconnected between the double gears, so that the gears, starter motor and overrunning clutch of the entire electric starting system will not be damaged, and it has a protective function; when using, the preset value can be set according to actual needs. The tightening force controls the meshing speed to ensure timely return and disengagement when the speed is low or at a standstill, protecting the system gear, starter motor and overrunning clutch.

Description

technical field [0001] The invention relates to an engine accessory part, in particular to a ball centrifugal gear assembly, a double gear and an engine. Background technique [0002] The electric starting of motor vehicle engines is a relatively commonly used structure; the principle is that the rotation of the starter motor drives the electric starting double gear, the electric starting bridge gear, the disc gear, the starting clutch, the magneto spindle and the crankshaft in turn to complete the engine starting operation. . For a small car with a larger displacement, when the engine suddenly stops or rolls back on a steep slope at high speed, the inertia is relatively large under a larger load, and the "crankshaft reversal" of the engine causes the electric start system to reverse. , it will cause the overrunning clutch to be suddenly damaged by excessive force, and it will also cause the electric starter double gear and the electric starter bridge gear to be broken afte...

AI Technical Summary

Problems solved by technology

For a small car with a large displacement, when the engine suddenly stops or slides backwards on a steep slope when the engine is running at high speed, the inertia is relatively large under the condition of a large load, and the "crankshaft reverse" of the engine causes the electric start system to reverse , it will cause the overrunning clutch to be damaged suddenly due to excessive force, and it will also cause the teeth of the electric starter double gear and the electric starter bridge gear to break after being strongly impacted, and the starter motor will be damaged.

However, in the actual use process, the tricycle engine with a large displacement (above 200 displacement) has faults such as broken teeth of the electric starter dual gear, broken overrunning clutch, and damaged starter motor.

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