Cylindrical impact linear motor and manufacturing method therefor

Abstract

The present invention discloses a cylindrical impact linear motor and a manufacturing method therefor. A cylindrical impact linear motor includes a main housing and a vibrator assembly arranged in a central cavity. The main housing is provided with two anti-collision structures. The vibrator assembly includes two strong magnetic strips which are axially connected in series to each other and have poles with the same polarity adjacent to each other, and a magnetic isolation member arranged between the two strong magnetic strips. The cylindrical impact linear motor further includes an electromagnetic coil embedded in the main housing and located on an outer periphery of the vibrator assembly. The direction and magnitude of a current conducted by the electromagnetic coil are changed to form an axial movement of the vibrator assembly in proportion to the change of the current, thereby forming an impact frequency and an impact force in proportion. The vibrator assembly of the present invention uses two strong magnetic strips having poles with the same polarity adjacent to each other and a magnetic isolation member arranged between the two strong magnetic strips, so that a magnetic field extends in the radial direction, the generated magnetic field is limited to a smaller range, and the movement range of the magnetic field of the vibrator assembly during vibration is reduced, thereby reducing the influence on the coil and providing a better vibration effect.

Dependencies are inferred from the claim text.