A lens moving apparatus including a bobbin, a first coil mounted at an outer circumference of the bobbin, a first magnet moving the bobbin in a first direction parallel to an optical axis by interaction with the first coil, a housing supporting the first magnet, an upper elastic member disposed at a top surface of the bobbin and at a top surface of the housing, a lower elastic member disposed at a bottom surface of bobbin and at a bottom surface of the housing, and first and second winding protrusions disposed with being opposite to each other, the first coil being wound on the first and second winding protrusions.

A linear motor is disclosed. The linear motor includes a housing; a vibrating assembly arranged in the housing, the vibrating assembly including a weight and a plurality of coils connecting with the weight; a magnet assembly connecting with the housing, the magnet assembly including a main magnet and a side magnet; and an elastic connecting piece supporting the vibrating assembly in the housing elastically. The coils are arranged around the main magnet; and the side magnet is arranged adjacent to peripheries of the coils.

A linear motor is disclosed. The linear motor includes a housing; a vibrating assembly arranged in the housing, the vibrating assembly including a weight and a plurality of coils connecting with the weight; a magnet assembly connecting with the housing, the magnet assembly including a main magnet and a side magnet; and an elastic connecting piece supporting the vibrating assembly in the housing elastically. The coils are arranged around the main magnet; and the side magnet is arranged adjacent to peripheries of the coils.

A linear motor includes a housing with an accommodation space; a magnet assembly accommodated in the accommodation space, the magnet assembly including a main magnet unit and two auxiliary magnet units located on both sides of the main magnet unit for forming a magnetic gap; a vibration member accommodated in the accommodation space, the vibration member including a coil inserted into the magnetic gap and weights located at both sides of the coil; and a support member suspending the vibration member in the accommodation space, the support member including an elastic supporting member supporting the vibration member and a coil frame inserted into the magnetic gap. The coil frame is disposed between the coil and the auxiliary magnet units, and the coil is wound around a side surface of the coil frame opposite to the main magnet unit.

A linear motor includes a housing with an accommodation space; a magnet assembly accommodated in the accommodation space, the magnet assembly including a main magnet unit and two auxiliary magnet units located on both sides of the main magnet unit for forming a magnetic gap; a vibration member accommodated in the accommodation space, the vibration member including a coil inserted into the magnetic gap and weights located at both sides of the coil; and a support member suspending the vibration member in the accommodation space, the support member including an elastic supporting member supporting the vibration member and a coil frame inserted into the magnetic gap. The coil frame is disposed between the coil and the auxiliary magnet units, and the coil is wound around a side surface of the coil frame opposite to the main magnet unit.

A linear motor includes a housing; a vibrating assembly arranged in the housing, the vibrating assembly including coils, a weight and a connecting piece connecting the coils with the weight; a magnet assembly connecting with the housing, the magnet assembly including a first magnet group and a second magnet group; a magnetic gap formed between the first magnet group and the second magnet group for at least partially receiving the coils; and an elastic connecting piece supporting the vibrating assembly in the housing elastically. The first magnet group and the second magnet group comprise at least one pair of magnets which are arranged oppositely to each other and have opposite magnetizing directions; and magnetizing directions of the magnets at the corresponding locations in the first magnet group and the second magnet group are the same.

A linear motor includes a housing; a vibrating assembly arranged in the housing, the vibrating assembly including coils, a weight and a connecting piece connecting the coils with the weight; a magnet assembly connecting with the housing, the magnet assembly including a first magnet group and a second magnet group; a magnetic gap formed between the first magnet group and the second magnet group for at least partially receiving the coils; and an elastic connecting piece supporting the vibrating assembly in the housing elastically. The first magnet group and the second magnet group comprise at least one pair of magnets which are arranged oppositely to each other and have opposite magnetizing directions; and magnetizing directions of the magnets at the corresponding locations in the first magnet group and the second magnet group are the same.

A vibration motor includes a stationary portion including a casing and a coil; a vibrating body including a weight and a magnet, the vibrating body being supported so as to be vibratable in one direction relative to the stationary portion; an elastic member located between the stationary portion and the vibrating body; and a top plate portion that is disposed above the vibrating body in an up-down direction that is perpendicular to the one direction. The magnet is disposed above the coil, and the top plate portion faces the magnet in the up-down direction. The magnet includes a set of first magnets that generate magnetic forces that are opposite to each other in the up-down direction and one or more second magnets that are interposed between the first magnets and each generate a magnetic force in the one direction.

A vibration motor includes a fixed member, a vibration unit, and an elastic member. The fixed member includes a housing having a receiving space and a coil received in the receiving space and assembled with the housing. The vibration unit includes a first weight, a second weight, and a magnet sandwiched by the first and second weights. The motor further includes a positioning guiding member including a first weight guiding rail, a second weight guiding rail, a first base guiding rail formed on the bottom wall, a second base guiding rail formed on the bottom wall, a first movement rail formed by the first weight guiding rail and the first base guiding rail, a second movement rail formed by the second weight guiding rail and the second base guiding rail, and a plurality of rolling members accommodated in the first movement rail and the second movement rail.

A linear-rotary actuator includes a base, a first linear motor, a second linear motor, a linear rail, and a ball screw. The first and second linear motors are disposed on the base and respectively have a coil assembly and a magnet backplane. The linear rail is located on the base. The ball screw includes a screw and a nut, wherein the screw is connected to the first linear motor, and the nut is connected to the second linear motor. When the screw and the nut are driven by the first and second linear motors to move along the linear rail in a synchronized manner, the linear-rotary actuator provides linear motion output. When the nut is driven by the second linear motor to move along the linear rail in an asynchronous manner with respect to the screw, the linear-rotary actuator provides rotary motion output.