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 the 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 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 the 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.

An actuator is provided, including a fixed assembly and a movable assembly. The fixed assembly includes a coil module, a base, a first screwing member, and a linear rail. The first screwing member passes through the base and the linear rail, and the linear rail is positioned on the base. The movable assembly includes a U-shaped back board having an inner space, a first magnetic module, a second magnetic module aligned with the first magnetic module, and a sliding block. The first and second magnetic modules are disposed on the U-shaped back board and accommodated in the inner space. The coil module is disposed between the first magnetic module and the second magnetic module. The sliding block is positioned on the U-shaped back board in the inner space, and slidably connected to the linear rail.

An actuator is provided, including a fixed assembly and a movable assembly. The fixed assembly includes a coil module, a base, a first screwing member, and a linear rail. The first screwing member passes through the base and the linear rail, and the linear rail is positioned on the base. The movable assembly includes a U-shaped back board having an inner space, a first magnetic module, a second magnetic module aligned with the first magnetic module, and a sliding block. The first and second magnetic modules are disposed on the U-shaped back board and accommodated in the inner space. The coil module is disposed between the first magnetic module and the second magnetic module. The sliding block is positioned on the U-shaped back board in the inner space, and slidably connected to the linear rail.

A transverse flux type reciprocating motor and a reciprocating compressor having a transverse flux type reciprocating motor are provided. The transverse flux type reciprocating motor may include a first reciprocating module including a first stator and a first rotor that reciprocates with respect to the first stator, a second reciprocating module including a second stator disposed to be spaced apart from the first stator in parallel to an axial direction and a second rotor that reciprocates with respect to the second rotor in the axial direction, and a connection member that connects side surfaces, which face each other, of the first rotor and the second rotors to each other. Thus, a magnetic resonance spring for allowing the rotor to be resonant with respect to the stator may be realized by using a force that moves to a side at which magnetic resistance is low between the stator and the rotor.

A transverse flux type reciprocating motor and a reciprocating compressor having a transverse flux type reciprocating motor are provided. The transverse flux type reciprocating motor may include a first reciprocating module including a first stator and a first rotor that reciprocates with respect to the first stator, a second reciprocating module including a second stator disposed to be spaced apart from the first stator in parallel to an axial direction and a second rotor that reciprocates with respect to the second rotor in the axial direction, and a connection member that connects side surfaces, which face each other, of the first rotor and the second rotors to each other. Thus, a magnetic resonance spring for allowing the rotor to be resonant with respect to the stator may be realized by using a force that moves to a side at which magnetic resistance is low between the stator and the rotor.

Disclosed is a linear motor, including a mover and a stator which cooperate with each other. The mover includes mover iron cores arranged at intervals in a movement direction of the mover, and the stator includes permanent magnets arranged at intervals in the movement direction. Each of the mover iron cores includes an iron core yoke portion and an iron core tooth unit joined to each other. The iron core tooth unit defines an opening, and each of the permanent magnets is located at least partially within the opening.

Disclosed is a linear motor, including a mover and a stator which cooperate with each other. The mover includes mover iron cores arranged at intervals in a movement direction of the mover, and the stator includes permanent magnets arranged at intervals in the movement direction. Each of the mover iron cores includes an iron core yoke portion and an iron core tooth unit joined to each other. The iron core tooth unit defines an opening, and each of the permanent magnets is located at least partially within the opening.

A linear motor actuator includes a plurality of stators mounted stationary relative to one another along a common actuation axis. A translator rod is mounted to the stators for linear motion relative to the stators along the actuation axis, wherein each stator is magnetically coupled to the translator rod to drive motion of the translator rod along the actuation axis.

A linear motor actuator includes a plurality of stators mounted stationary relative to one another along a common actuation axis. A translator rod is mounted to the stators for linear motion relative to the stators along the actuation axis, wherein each stator is magnetically coupled to the translator rod to drive motion of the translator rod along the actuation axis.