An electricity generation device using a neodymium magnet having a helical structure, comprising:
- a first neodymium magnet (10) formed in the shape of a cylindrical body, which are open at both ends and has a first mounting hole (11), and composed of partial neodymium magnets arranged around an outer side of the body helically with respect to a longitudinal direction, in which an inside of the cylindrical body makes a first pole and the outer side makes a second pole;
- a second neodymium magnet (20) formed in the shape of a cylindrical body, which is open at both ends and has a second mounting hole (21), and composed of partial neodymium magnets arranged around an outer side of the body helically with respect to a longitudinal direction, in which an inside of the cylindrical body makes a second pole and the outer side makes a first pole, and the first neodymium magnet (10) is disposed inside the cylindrical body;
- a third neodymium magnet (30) formed in the shape of a cylindrical body, which is open at both ends and has a third mounting hole (31), and composed of partial neodymium magnets arranged around an outer side of the body helically with respect to a longitudinal direction, in which an inside of the cylindrical body makes a first pole and the outer side makes a second pole, and the second neodymium magnet (20) is disposed inside the cylindrical body;
- a first side magnet (40) disposed on a first side of the third neodymium magnet (30), having a first groove (41) in which a first end of the second neodymium magnet (20) is fitted, and having a first support hole (42) having a diameter smaller than the first groove (41) at a center;
- a second side magnet (50) disposed on a second side of the third neodymium magnet (30), having a second groove (41) in which a second end of the second neodymium magnet (20) is fitted, and having a second support hole (52) having a diameter smaller than the second groove (51) at a center;
- a rod (60) inserted in the first mounting hole (11) of the first neodymium magnet (10), with a first end passing through the first support hole (42) and a second end passing through the second support hole (52);
- and
- a unit coil (70) wound on the rod (60),
- wherein the first neodymium magnet (10) and the third neodymium magnet (30) are fixed and the second neodymium magnet (20) rotates between the first neodymium magnet (10) and the third neodymium magnet (30) to generate an electric field around the unit coil (70) so that electricity is generated in the unit coil (70), and
- the device further comprises:
- a case (80) having a space for accommodating the rod (60), the unit coil (70), the first neodymium magnet (10), the second neodymium magnet (20), the third neodymium magnet (30), the first side magnet (40), and the second side magnet (50), and being formed in the shape of a cylindrical body with both ends open;
- a first cover (90) coupled to a first end of the case (80) to cover the first end and having a first through-hole (91) through which the first end of the rod (60) and a first end of the unit coil (70) pass;
- a second cover (100) coupled to a second end of the case (80) to cover the second end and having a second through-hole (101) through which the second end of the rod (60) and a second end of the unit coil (70) pass;
- a cradle (110) having a first holder (111) where the first end of the rod (60) is coupled, a second holder (112) where the second end of the rod (60) is coupled, and a base (113a) disposed between the first holder (111) and the second holder (112) and having seats (113a) where the case (80) is seated;
- a side gear (22) having teeth and formed on a first side of the second neodymium magnet (20);
- a first gear (120) being in mesh with the side gear (22) to operate together;
- and
- a handle (130) coupled to the first gear (120) at a central axis of the first gear (120) and rotating the second neodymium magnet (20) by rotating the first gear (120), wherein the case (80) further has a seat protruding in a direction to seat the first gear (120).