Vibration motor
The vibration motor includes a casing, a stator, a vibrator, and an elastic connector suspended inside the casing. The stator includes a circuit board fixed to the casing and a coil fixedly connected to the circuit board. The circuit board includes a bonding pad, and the coil includes a coil body and a lead wire. The circuit board is provided with an avoiding portion that avoids a junction between the lead wire and the coil body, and the avoiding portion is provided with back glue that isolates the lead wire from the casing. The vibration motor of the present application isolates the lead wire of the coil and the casing by adding back glue at the avoiding portion, which prevents the lead wire of the coil from being in electrical contact with the casing caused by the coil being damaged under pressure or impact, thereby preventing adverse effects.
1 . A vibration motor comprising a casing, a stator installed inside the casing, a vibrator, and an elastic connector suspended inside the casing, wherein the stator comprises a circuit board fixed to the casing and a coil fixedly connected to the circuit board, the circuit board comprises a bonding pad, the coil comprises a coil body and a lead wire extending from the coil body and welded to the bonding pad, characterized in that,
a back glue for bonding the circuit board and the casing is provided between the lower surface of circuit board and the corresponding surface of the casing,
the circuit board is provided with an avoiding portion that avoids a junction between the lead wire and the coil body, and the avoiding portion is provided with the back glue that isolates the lead wire from the casing,
the avoiding portion is an avoidance notch that exposes a part of the back glue and the lead wire is positioned directly above the exposed part of the back glue.
2 . The vibration motor according to claim 1 , wherein the avoiding portion is filled with the back glue.
3 . The vibration motor according to claim 2 , wherein the casing comprises an outer casing and a cover plate arranged on the outer casing, and the stator is fixed to the cover plate.
4 . The vibration motor according to claim 1 , wherein the lead wire comprises an inlet lead wire and an outlet lead wire arranged on a same side of the coil.
5 . The vibration motor according to claim 1 , wherein the back glue is configured to cover a projection of the circuit board on the casing.
6 . The vibration motor according to claim 1 , wherein the casing is made of metal material.
7 . The vibration motor according to claim 1 , wherein the casing comprises an outer casing and a cover plate arranged on the outer casing, and the stator is fixed to the cover plate.