Vibration motor

Abstract

The invention discloses a vibration motor, including a stator, an armature, a mounting part, and a flexible assembly connected between the armature and the mounting part, and a workpiece assembly mounted on the armature and extending from the armature , the flexible assembly includes two steel sheets against each other, the steel sheet includes a circular arc part and a plane part arranged at both ends of the circular arc part, and the two steel sheets are horizontally arranged between the mounting part and the armature. When the flexible component makes a bow-shaped movement, the two ends of the arc part become the fulcrum of the steel sheet deformation. At this time, the steel sheet can use these two ends as the fulcrum to accumulate the deformation, avoiding the stress of a single fulcrum, which is easy to make the steel sheet For the problem of damage, the structural design of the arc part makes it possible that when one end point is first stressed, the deformation force received at one end point is quickly transmitted to the other end through the arc part, and at the same time, the slight deformation of the arc part accumulates the springback. The required elastic potential energy is equivalent to the accumulated deformation of the steel sheet swing in the three parts of the two ends of the arc and the arc itself.

Description

technical field [0001] The present invention relates to the field of motors, more specifically, to a vibration motor. Background technique [0002] Personal care appliances typically utilize internal motors to create specific workpiece motion / actions that in turn produce desired functional results. Examples of such appliances include electric skin brushes, electric toothbrushes, electric shavers, and the like. [0003] The motor arrangement of many of these devices produces vibratory (back and forth) motion rather than pure rotational motion. This arrangement requires not only the typical motor bearing structure to support this motion, but also special structural elements to limit the motion of the motor driven shaft and workpiece to a selected angle / motion. Such bearings or other elements often add significant cost and manufacturing difficulty to the manufacture of the appliance, as well as stability / durability considerations to the use of the appliance. [0004] In this...

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned patent has the following disadvantages: 1) Since the flexible element is two steel sheets intersecting each other, and the two steel sheets are not connected, it is very inconvenient to install and install parts and armature parts, and injection molding can only be used Injection molding on the mounting part and the armature part, which also causes the above-mentioned flexible elements to be difficult to replace after damage; 2) The form of two steel sheets crossing each other, that is, the steel sheet needs to be installed obliquely between the armature and the mounting part The space between the steel sheet and the armature part must be close to the part with the magnet of the armature part, so that the length of the steel sheet increases when the steel sheet is installed; 3) When the steel sheet rebounds, the connection between the steel sheet and the mounting part is used as The fulcrum of the rebound, the rest of the steel sheet does not deform, so that the deformation of the connection between the steel sheet and the mounting part is large during the rebound, and it is easy to cause failure during the long-term deformation accumulation process

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