Motor with arc-shaped thick-tooth type bevel gear

Abstract

The invention relates to a motor with an arc-shaped thick-tooth type bevel gear. The motor comprises a motor body assembly, a speed reducer assembly and an electrical assembly (13); a worm (81) is arranged at one end part of an armature shaft (8), engaging with the bevel gear (2); the reference circle tooth thickness of the bevel gear is more than that of the worm; the teeth of the bevel gear (2) are in a shape of being wrapped and connected with a plurality of second-order curves. According to the motor with the arc-shaped thick-tooth type bevel gear, the reference circle tooth thickness and the teeth shape of the bevel gear are highly improved, so that the strength and overload capacity of the bevel gear can be obviously improved; in case that the motor is burnt due to overload, the bevel gear cannot slip and be damaged; therefore, the circumstance that the product is scrapped due to insufficient strength of the bevel gear during the actual work can be basically removed, the faults like noise and excessive vibration caused by excessive wear or slip-caused damage of the bevel gear can be decreased, and as a result, the service lives of the bevel gear, the whole transmission mechanism and a motor can be greatly prolonged.

Description

technical field [0001] The invention relates to an electric machine. Background technique [0002] Worm gear mechanism is widely used in motors as a commonly used reduction transmission mechanism, especially in automobile motors, such as automobile wiper motors, seat motors, windshield lift motors and other micro motors. In order to reduce the overall weight and cost of the motor, the worm gear is usually replaced by a plastic injection-molded helical gear. The working process is: after power is applied, the armature shaft with the worm end rotates, and the meshing action of the worm and the helical gear through the armature shaft , to drive the output components such as helical gears to work, to realize the conversion of electrical energy to mechanical energy and the deceleration process. The worm helical gear transmission method used in traditional motors has the following problems: the armature shaft and its worm are generally made of steel materials and processed by hea...

AI Technical Summary

Problems solved by technology

The worm helical gear transmission method used in traditional motors has the following problems: the armature shaft and its worm are generally made of steel materials and processed by heat treatment, and the helical gears made of plastic injection molding are far inferior in strength and life in actual work. Lower than the worm; the tooth shape of the helical gear is uneven in force, prone to local wear and slip damage, resulting in scrapping the motor (such as the durability test of the wiper motor generally only reaches 150×10 4 Second-rate)

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