A holder assembly, for an electric toothbrush, comprising:
- a holder body, comprising a main body portion and a connection structure that are connected to each other;
- wherein the main body portion defines a battery mounting compartment, and the connection structure comprises an insertion mating portion;
- and
- an elastic cushioning member, comprising a mounting cylinder;
- wherein a motor mounting cavity is defined in the mounting cylinder, and the mounting cylinder comprises a motor cushioning portion;
- the motor cushioning portion and the insertion mating portion are insertion-connected and fixed in an axial direction of the mounting cylinder, for connecting the holder body and the elastic cushioning member;
- wherein the motor cushioning portion comprises a peripheral cushioning surface and an axial cushioning surface;
- the insertion mating portion comprises a peripheral mating surface and an axial mating surface, wherein the peripheral mating surface abuts against and is mated with the peripheral cushioning surface around the axial direction of the mounting cylinder, and the axial mating surface abuts against and is mated with the axial cushioning surface around the axial direction of the mounting cylinder;
- wherein the insertion mating portion comprises a plurality of insertion protrusions spaced along a peripheral direction of the mounting cylinder, and a first insertion slot is defined between each adjacent two of the plurality of insertion protrusions;
- bottom walls of a plurality of the first insertion slots and end walls of the plurality of insertion protrusions form the axial mating surface;
- side walls of the plurality of first insertion slots and side walls of the plurality of insertion protrusions form the peripheral mating surface;
- the motor cushioning portion comprises a plurality of second insertion slots defined on an end wall of the mounting cylinder facing the connection structure, the plurality of second insertion slots being spaced apart along the peripheral direction of the mounting cylinder;
- a cushioning protrusion is arranged between each adjacent two of the plurality of second insertion slots;
- bottom walls of the plurality of second insertion slots and end walls of a plurality of the cushioning protrusions form the axial cushioning surface;
- side walls of the plurality of second insertion slots and side walls of the plurality of cushioning protrusions form the peripheral cushioning surface;
- the plurality of cushioning protrusions are in one-to-one correspondence with and adapted to be insertion-connected and fixed with the plurality of first insertion slots;
- the plurality of insertion protrusions are in one-to-one correspondence with and adapted to be insertion-connected and fixed with the plurality of second insertion slots.