Vibration motor with elastic support members with fixing portions on beveled edge of a corner of the mass
A vibration motor is provided, including: a housing including a pair of side walls, a vibrator including a mass block, a pair of elastic support members disposed at both ends of the vibrator, and a stator. The mass block includes a pair of corners diagonally disposed. Each corner includes a first side edge, a second side edge, and a beveled edge. Each elastic support member includes a first fixing portion fixed to a respective beveled edge, a straight edge portion curved and extending from the first fixing portion in a direction away from a respective first side edge and close to a respective second side edge, a second fixing portion fixed to a respective side wall away from the corresponding corner, and a curved portion connecting the straight edge portion and the second fixing portion. The vibration motor in the present disclosure is capable of improving performance.
1 . A vibration motor comprising a housing, a vibrator accommodated in the housing, a pair of elastic support members fixed to the housing and suspending the vibrator in the housing, and a stator fixed to the housing for driving the vibrator to vibrate along a first direction, wherein the vibrator includes a mass block, and the mass block includes a pair of corners that are diagonally disposed; wherein each of the pair of corners includes a first side edge extending along the first direction, a second side edge extending along a second direction perpendicular to the first direction, and a beveled edge connecting the first side edge and the second side edge, wherein the beveled edge is a plane surface which is not parallel to either the first direction or the second direction; wherein the pair of elastic support members are respectively disposed at both ends of the vibrator along the first direction, and the housing includes a pair of side walls extending along the first direction; and wherein each of the pair of elastic support members includes a first fixing portion with a flat plate shape fixed to a respective beveled edge of a corresponding one of the pair of corners, a straight edge portion curved and extending from the first fixing portion in a direction away from a respective first side edge of the corresponding one of the pair of corners and close to a respective second side edge of the corresponding one of the pair of corners, a second fixing portion fixed to a respective side wall away from the corresponding one of the pair of corners, and a curved portion connecting the straight edge portion and the second fixing portion.
2 . The vibration motor according to claim 1 , wherein the pair of elastic support members are disposed centrosymmetrically.
3 . The vibration motor according to claim 1 , wherein both an outer surface of the first fixing portion and an outer surface of the second fixing portion are provided with a solder sheet.
4 . The vibration motor according to claim 1 , wherein the vibration motor further includes a limiting block fixed to the housing for limiting displacement of the vibrator along the first direction.
5 . The vibration motor according to claim 1 , wherein the mass block is provided with a through-hole penetrating along a third direction perpendicular to the first direction and the second direction, the vibrator further includes a magnetic circuit system accommodated in the through-hole, and the stator is accommodated in the through-hole and disposed in relative spacing from the magnetic circuit system.
6 . The vibration motor according to claim 5 , wherein the stator includes a pole shoe fixed to the housing and a coil wound on the pole shoe.
7 . The vibration motor according to claim 5 , wherein the magnetic circuit system includes magnet portions respectively disposed at both ends of the stator along the first direction and at both sides of the stator along the second direction, and each of the magnet portions includes a pole shank fixed to the mass block and a magnetic steel fixed to the pole shank.