Reinforcing ring structure, preparation process and application thereof

Abstract

The invention discloses a reinforcing ring structure, and a preparation process and application thereof, and belongs to the technical field of reinforcing ring structures. The reinforcing ring structure sleeves the two ends of an armature coil and comprises a rigid layer and an insulating layer, a phosphating and saponifying layer is arranged outside the rigid layer, the insulating layer is coated at the inner side of the phosphating and saponifying layer, and the insulating layer and the outer insulating paint of the armature coil are mutually permeated and fused. The reinforcing ring structure has the advantages that the reinforcing ring structure has certain strength, meanwhile, the portion, making contact with the armature coil, of the reinforcing ring structure has insulativity and good heat resistance, the fusion degree of the reinforcing ring structure and insulating paint outside the armature coil is high, the reliability and working stability of a starter rotor are improved, and the service life of the starter rotor is prolonged.

Description

technical field [0001] The invention relates to the technical field of reinforcement ring structures, in particular to a reinforcement ring structure, preparation process and application. Background technique [0002] The starter motor in the starter or engine is composed of a stator magnetic field, a rotor armature and a commutator. In order to increase the torque, a multi-pole magnetic field is used. There are usually 4 magnetic fields. When the current passes through the armature coil, the entire coil will receive a torque. And turn. Due to the high rotational speed of the rotor, the mechanical strength of the armature coil located outside both ends of the rotor core is difficult to overcome the centrifugal force, and it tends to deform outwards and bulge, thus touching the excitation coil on the stator. When the insulating varnish between the coil and the armature coil is turned on due to scratch damage, the starter will be burned. In order to ensure the reliability of ...

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Problems solved by technology

[0003] However, most of the structure of the traditional reinforcement ring is a steel ring. Although the reinforcement ring of this structure has good strength and good rigidity, it has the following disadvantages: First, the combination of the steel reinforcement ring and the armature coil is not strong enough, often Because the rotating speed of the rotor is too high, the reinforcing ring is separated from the armature coil. In order to improve the bonding strength with the armature coil, the inner diameter of the reinforcing ring is reduced to make the reinforcing ring tightly cover the armature coil, but the armature coil will be formed The outer diameter of the armature coil shrinks inward, making it difficult to achieve the ultimate output torque of the starter; second, the insulation performance of the steel reinforcement ring is poor. If the insulating paint of the armature coil is scratched and damaged, the leakage current will not be reduced, and it will also give The normal operation of the rotor poses a safety risk

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