US 2019/0173367 A1 · VIBRATING ACTUATOR

Abstract

A vibrating actuator is disclosed, comprising: a magnetic part including at least two magnets arranged with same polarities facing each other; a receiving part including a hollow member with a cavity for receiving the magnetic part and at least one coil wrapped around the hollow member and fixed thereto; elastic elements interconnecting the magnetic part and the hollow member; and a chassis. In one aspect, the magnetic part is fixed to the chassis via attachment elements such that the magnetic part, attachment elements and chassis are stationary, and the receiving part performs a linear movement with changing direction causing the vibration when an alternating current passes through the coil(s). In another aspect, the elastic elements are flat elastic metal or plastic membranes. In another aspect, a magnetic guidance member of ferromagnetic material partly surrounding the hollow member and coil(s) is mounted to the longitudinally outer ends of the magnetic part.

Claims20

Dependent claims

A method for manufacturing a vibrating actuator, comprising:

assembling a magnetic part by assembling at least two magnets in a dedicated assembly jig using at least one rod, wherein the magnets face each other with the same polarity and have a gap between them;
assembling a moving part by wrapping at least one coil of self-bonding copper wire around a hollow member comprising two slots with the at least one coil located in the longitudinally central part of the hollow member between the slots, and
heating the at least one coil and the hollow member such that the at least one coil becomes solid and binds with the hollow member;
inserting the magnetic part into the moving part;
attaching an elastic material to longitudinally outer ends of the magnetic part and to outer ends of the hollow member;
attaching the magnetic part to a chassis via attachment members extending through the slots in the hollow member.

3 more elements

Dependencies are inferred from the claim text.

Vibrating actuator

Life of this patent

Vibrating actuator

Life of this patent

Abstract

Claims20