Vibration motor having a driving unit which includes a solenoid assembly capable of vibrating in a direction perpendicular to a vibration direction of a vibration unit

1 . A vibration motor, comprising:

a frame having a receiving cavity, comprising an upper frame and a lower frame engaged with the upper frame for forming the receiving cavity;

a vibration unit received in the receiving cavity;

a driving unit received in the receiving cavity for driving the vibration unit for vibrating along a first vibration direction, comprising a solenoid assembly; and

a pair of first elastic members respectively disposed on both sides of the vibration unit along the first vibration direction for elastically supporting the vibration unit in the receiving cavity;

wherein, the lower frame is provided with two second elastic members, each second elastic member is spaced apart from the lower frame, one end of each second elastic member is fixed to the lower frame, and another end of each second elastic member is fixed to the solenoid assembly, the solenoid assembly is elastically supported by the two second elastic members for being capable to vibrate along a second vibration direction perpendicular to the first vibration direction, the solenoid assembly comprises an iron core and a coil, the iron core comprises two first portions opposite to each other along the first vibration direction and a second portion extending along the first vibration direction and connecting the two first portions, an orthographic projection area of each first portion along the first vibration direction is greater than that of the second portion along the same direction, the coil is wound on the second portion, the two second elastic members are disposed on the same side of the iron core along the second vibration direction and close to the lower frame, the another end of each second elastic member is fixed to an end of a corresponding first portion along the second vibration direction and close to the lower frame, the vibration unit comprises a weight having a containing space and two magnetic units mounted in the containing space, the two magnetic units are arranged opposite to each other along a direction perpendicular to the first vibration direction and the second vibration direction, each magnetic unit comprises a magnetically conductive plate attached to the weight and a magnet attached to the magnetically conductive plate, the solenoid assembly is inserted between and spaced apart from the two magnets.

2 . The vibration motor as described in claim 1 , wherein the one end of each second elastic member is fixed to the lower frame through a spacer.

3 . The vibration motor as described in claim 1 , wherein the one end of each second elastic member is fixed to a protrusion of the lower frame.

4 . The vibration motor as described in claim 1 , wherein each second elastic member has a long strip shape extending along the first vibration direction.

5 . The vibration motor as described in claim 1 , wherein a damping element is sandwiched between each second elastic member and the lower frame.

6 . The vibration motor as described in claim 5 , wherein a gap between each second elastic member and the lower frame is full of the damping element.

7 . The vibration motor as described in claim 5 , wherein the damping element is made of foam.