A power transmission device with a clutch mechanism

Abstract

The invention discloses a power transmission device with a clutch mechanism, comprising a transmission shaft, clutch wheels, cover caps, check rings and separators, wherein connecting parts are arranged at one ends of the clutch wheels and installation parts are arranged at the other ends of the clutch wheels; a convex ring-shaped connecting part is arranged on the peripheral wall of the transmission shaft, the connecting parts of the clutch wheels are sheathed on the ring-shaped connecting part, multiple unidirectional clutch grooves formed in circumferential direction at equal distances are arranged in center holes of the connecting parts of the clutch wheels, one end of the ring-shaped connecting part of the transmission shaft, away from the clutch wheels, is provided with a ring-shaped notch, each separator comprises a ring-shaped fixing part, and a ring-shaped separating boss which protrudes outwards from the peripheral wall of the fixing part and is used for separating each unidirectional clutch groove into two containing cavities, and a roller and a flat spring for providing reset elastic force to the roller are arranged in each containing cavity. According to the power transmission device, the working reliability is effectively improved and the service life can be prolonged.

Description

technical field [0001] The invention belongs to the technical field of power transmission structure design, and in particular relates to a power transmission device with a clutch mechanism. Background technique [0002] Power transmission devices are widely used in the automotive industry, for example, power transmission devices are installed in the starter of a car. When starting a car, the starting device and the engine cooperate with each other to complete the entire starting process. In the initial stage, the starting device works, and the power is transmitted to the engine through the power transmission device, thereby driving the engine to work. After engine was started, its rotating speed was greater than the rotating speed of starting device, and now starting device had finished the task, and broke away from engine automatically. [0003] In order to reduce wear and achieve one-way clutch in the power transmission device, it is necessary to install multiple rollers...

AI Technical Summary

Problems solved by technology

[0003] In order to reduce wear and achieve one-way clutch in the power transmission device, it is necessary to install multiple rollers and flat springs in the one-way clutch groove of the clutch wheel to cooperate with the rotation. In order to reduce friction, it is generally necessary to apply grease to the rollers for lubrication , the grease will become thinner under high-speed rotation, and will be thrown out with high-speed rotation, causing wear among the rollers, transmission shaft, and clutch wheel. Therefore, at present, a retaining ring is usually set on the transmission shaft to block the one-way clutch groove, but its sealing effect is not good, it cannot prevent the lubricating oil from being thrown out and the outside dust from entering the one-way clutch groove

In addition, when this structure is surpassed, the flat spring is easy to deform, shrinks and cannot rebound and fails, causing the clutch wheel to lose its function

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