Vibration exciter

A vibration exciter comprising:

• a housing having a housing cavity, a stator assembly fixed in the housing, and a vibrator assembly housed in the housing cavity and driven to vibrate by the stator assembly;
• wherein, the stator assembly comprises a pole core fixedly attached to the inner side of the housing and a magnet fixedly attached to the side of the pole core that is back from the housing;
• the vibrator assembly includes a bracket housed in the housing cavity, a coil wound on the outside of the bracket, a counterweight fixed to the bracket, and a column assembly fixed to the end of the bracket and elastically connected to the housing;
• the bracket is a solid structure;
• the bracket includes a support portion located in the middle and two fixed portions attached to each end of the support portion, the fixed portions protrude from the outer surface of the support portion, and the two fixed portions form a spacing between them, the coil is wound on the support portion and is located within the spacing;
• the column assembly comprises a column, one end of the column being directly connected with one of the fixed portions.