Abstract: A linear vibration actuator includes: a mover having a plurality of magnets linearly arrayed in the vibration direction; a guide portion holding the mover to be allowed to linearly move in the vibration direction; a plurality of planar coils wound in a flat plate shape on a flat surface facing the mover; a pair of first biasing magnets respectively arranged at both ends of the mover in the vibration direction; and a pair of second biasing magnets that are respectively arranged facing the pair of first biasing magnets, and respectively have the same polarities as those of the pair of first biasing magnets to bias the mover in the vibration direction.

Abstract: A linear vibration actuator includes: a mover having a plurality of magnets linearly arrayed in the vibration direction; a guide portion holding the mover to be allowed to linearly move in the vibration direction; a plurality of planar coils wound in a flat plate shape on a flat surface facing the mover; a pair of first biasing magnets respectively arranged at both ends of the mover in the vibration direction; and a pair of second biasing magnets that are respectively arranged facing the pair of first biasing magnets, and respectively have the same polarities as those of the pair of first biasing magnets to bias the mover in the vibration direction.

Abstract: To provide an SmCo-based rare earth sintered magnet having a small diameter and a multipolar magnetized magnetic structure and having a high coercive force and a high magnetization rate. The outer shape of an SmCo-based rare earth sintered magnet having a coercive force HCJ (kOe) at a room temperature (° C.) of 7.5 (kOe)<HCJ?27 (kOe) is formed into any one of a cylindrical shape, a ring-like shape, a columnar shape, and a disk-like shape. Multi-pole magnetization is performed on the SmCo-based rare earth sintered magnet so as to satisfy (diameter D/the number of poles p) (mm)<(4/?) (mm) (p is an even number equal to or greater than 4), and the magnetization rate is set to 80(%) or more.

Abstract: Provided is a micro motor with micro diameter that can be manufactured with high accuracy and efficiency. The micro motor (10) includes a tubular motor housing (11), a motor shaft (12) that is supported in the motor housing (11) and rotationally driven, and a connecting member (16) that covers one opening of the motor housing (11) and allows the motor shaft (12) to be inserted to project outward, and the micro motor (10) can transmit rotation of the motor shaft (12) to a planetary gear mechanism (driven unit) (20) as another unit. The connecting member (16) integrally includes a bearing (16c) for rotatably supporting the motor shaft (12) and an output side connecting part (16a) that can be connected to a tubular casing (21) of the planetary gear mechanism (20).

Abstract: A surface mount-type vibration motor and an installation structure for a surface mount-type vibration motor, where soldered portions are prevented from separating from a circuit board without requiring any design change in a vibration motor body. A section where a motor holding section of a motor holder and motor support sections of the motor holder are connected is bent in an arc shape having elasticity to form the motor holder, the motor holding section holding a vibration motor body to which an elastic holder is attached, the motor support sections being arranged along a circuit board. First contact sections and second contact sections are formed in the connection section such that distal ends of the first and second contact sections are of a band-like shape projecting toward the inside of the vibration motor body. The motor holder reduces a load applied to portions where the surface mount-type vibration motor is soldered to the circuit board and also improves bonding strength.

Abstract: In a solder reflow process, a vibration motor is stably mounted on a circuit board by changing the design of a partial shape of a soldered motor holder without changing the design of a vibration motor body and securing a sufficient soldering area to completely perform solder bonding to prevent a soldered portion of a motor holder from peeling off the circuit board. A surface mount type vibration motor is provided, wherein the pedestals of a motor holder include the support plates that are in contact with stationary lands on a surface of a circuit board and extend in the axial direction of an output shaft, end portions of the support plates are arranged between the position of an eccentric weight and the end surface of the eccentric weight along the axial direction, and the support plates are not arranged just under an axis of said output shaft where the distance between the weight and the circuit board is minimum.

Abstract: [Problems] A surface mount-type vibration motor and an installation structure for a surface mount-type vibration motor, where soldered portions are prevented from separating from a circuit board without requiring any design change in a vibration motor body. [Means for Solving the Problem] A section where a motor holding section 31 of a motor holder 30 and motor support sections 32 of the motor holder 30 are connected is bent in an arc shape having elasticity to form the motor holder 30, the motor holding section 31 holding a vibration motor body 2 to which an elastic holder 8 is attached, the motor support sections 32 being arranged along a circuit board 3. First contact sections 52 and second contact sections 53 are formed in the connection section such that distal ends of the first and second contact sections are of a band-like shape projecting toward the inside of the vibration motor body 2.

Abstract: To realize high reliability and a long-term stabilized power supply (long lifetime) in the connection between a power supply terminal and a power supply land on a circuit board.

Abstract: In a solder reflow process, a vibration motor is stably mounted on a circuit board by changing the design of a partial shape of a soldered motor holder without changing the design of a vibration motor body and securing a sufficient soldering area to completely perform solder bonding to prevent a soldered portion of a motor holder from peeling off the circuit board. [Solution] To provide a surface mount type vibration motor, wherein the pedestals of a motor holder comprise the support plates that are in contact with stationary lands on a surface of a circuit board and extend in the axial direction of an output shaft, end portions of the support plates are arranged between the position of an eccentric weight and the end surface of the eccentric weight along the axial direction, and the support plates are not arranged just under an axis of said output shaft where the distance between the weight and the circuit board is minimum.

Abstract: [Problem] To realize high reliability and a long-term stabilized power supply (long lifetime) in the connection between a power supply terminal and a power supply land on a circuit board.