A compact torque motor providing bi-directional, limited angle reactionless torque to opposed structures. A motor (10, 150) includes an X-shaped core (12), and first and second pole pieces (14 and 16), which are disposed at opposite sides of the core. Two opposed legs on the X-shaped core (12) compr
A compact torque motor providing bi-directional, limited angle reactionless torque to opposed structures. A motor (10, 150) includes an X-shaped core (12), and first and second pole pieces (14 and 16), which are disposed at opposite sides of the core. Two opposed legs on the X-shaped core (12) comprise a first core section (18), which is transverse to a similar second core section (20). A first electromagnetic coil (22) is formed on the first core section and a second electromagnetic coil (24) on the second core section. When the first and second electromagnetic coils are alternately energized, tabs (38, 40, 44, and 46) disposed approximate the ends of the first and second pole pieces are attracted to the resulting magnetic poles (26 and 28, 30 and 32), causing the pole pieces to counter-rotate back and forth about a central axis (48). Magnetic flux developed by the first and second electromagnetic coils is conveyed through the tabs and the first and second pole pieces between the opposite magnetic poles. Since the pole pieces are lightweight, rotational inertia of the motor is very low, and its efficiency relative high.
대표청구항▼
A torque motor comprising: (a) an electromagnetic core including two pairs of outwardly extending legs arranged around a central axis, a radially outer end of one leg of each pair of legs being disposed diametrically opposite a radially outer end of the other leg of the pair; (b) a first multi-turn
A torque motor comprising: (a) an electromagnetic core including two pairs of outwardly extending legs arranged around a central axis, a radially outer end of one leg of each pair of legs being disposed diametrically opposite a radially outer end of the other leg of the pair; (b) a first multi-turn coil disposed around one pair of legs, said first multi-turn coil being operative, when energized with an electrical current, to cause the radially outer ends of said one pair of legs to become opposite magnetic poles; (c) a second multi-turn coil disposed around the other pair of legs, said second multi-turn coil being operative, when energized with an electrical current, to cause the radially outer ends of said other pair of legs to become opposite magnetic poles; and (d) a first pole piece mounted to rotate bi-directionally about the central axis relative to the electromagnetic core, said first pole piece extending diametrically across the electromagnetic core and including a pair of tabs disposed generally at opposite ends of the first pole piece, each tab being disposed proximate one of the legs, so that when the first multi-turn coil is energized with the electrical current, two of the tabs disposed at opposite ends of the first pole piece are attracted to the magnetic poles of said one pair of legs, causing the first pole piece to rotate about the central axis in a first direction relative to the electromagnetic core, and when the second multi-turn coil is energized, two other tabs of the first pole piece are attracted to the magnetic poles of said other pair of legs, causing the first pole piece to rotate in a second direction about the central axis, opposite the first direction.
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이 특허에 인용된 특허 (2)
Bianchi Vittorio (Ferrera ITX) Hensing Johannes M. M. (Eindhoven NLX) Munnig Schmidt Robert H. (Drachten NLX), Motor-compressor unit.
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