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US 6,285,108 B1Granted
Brushless DC motor
AssigneeSunonwealth Electric Machine Industry Co., Ltd.
InventorAlex Horng
Life of this patent
Estimating the term…
Abstract
A stator includes a magnetically conductive tube with a pole plate at one end. The edge of the pole plate functions as a magnetic pole. The other end of the magnetically conductive tube is combined with another pole plate. A coil is wound between the two pole plates. The edges of both pole plates extend in opposite directions to form a larger magnet pole area.
Claims108
A stator comprising:
- a magnetic conductive tube made of magnetizable material and a first pole plate formed on one end of the magnetic conductive tube, the first pole plate further including a plurality of poles;
- a second pole plate, including a plurality of poles, said second pole plate being sleeved to the magnetic conductive tube and held on the magnetic conductive tube by means of a small diameter flange on the magnetic conductive tube;
- and
- a coil wound around the magnetic conductive tube and insulated with respect to the first and second pole plates.
1 more element
A stator comprising:
- a combined tube/plate member including a magnetic conductive tube made of magnetizable material and a first pole plate formed on one end of the magnetic conductive tube, the first pole plate further including a plurality of poles;
- a second pole plate, including a plurality of poles, said second pole plate being sleeved to the magnetic conductive tube and held on the magnetic conductive tube by means of a small diameter flange on the magnetic conductive tube;
- and
- a bobbin made of insulating material located between the second pole plate and the first pole plate, and insulated from the magnetic conductive tube and the first pole plate.
1 more element
A stator comprising:
- a magnetic conductive tube made of magnetizable material and a first pole plate formed on one end of the magnetic conductive tube, the first pole plate further extending in an opposite direction relative to the tube to form a plurality of poles with enlarged inductive area;
- a second pole plate, including plurality of poles, said second pole plate being sleeved to the magnetic conductive tube, the second pole plate further extending in an opposite direction relative to the other pole plate to form a plurality of poles with enlarged inductive area;
- and
- a coil wound around the magnetic conductive tube and insulated with respect to the first and second pole plates.
1 more element
A stator comprising:
- a magnetic conductive tube made of magnetizable material and a first pole plate formed on one end of the magnetic conductive tube, the first pole plate further extending in an opposite direction relative to the tube to form a plurality of poles with enlarged inductive area;
- a second pole plate, including plurality of poles, said second pole plate being sleeved to the magnetic conductive tube, the second pole plate further extending in an opposite direction relative to the other pole plate to form a plurality of poles with enlarged inductive area;
- and
- a bobbin made of insulating material located between the second pole plate and the first pole plate, and insulated from the magnetic conductive tube and the first pole plate, a coil being wound around the bobbin and insulated from the two pole plates and the magnetic conductive tube.
1 more element
A stator comprising:
- a combined tube/plate member including a magnetic conductive tube made of magnetizable material and an annular flange formed on one end of the magnetic conductive tube;
- a pole plate sleeved to the magnetic conductive tube adjacent to the annular flange, the pole plate further extending in an opposite direction relative to another pole plate to form a plurality of poles with enlarged inductive area;
- and
- a coil wound around the magnetic conductive tube and insulated with respect to the pole plates and the magnetic conductive tube.
1 more element
A stator comprising:
- a combined tube/plate member including a magnetic conductive tube made of magnetizable material and an annular flange formed on one end of the magnetic conductive tube;
- a pole plate sleeved to the magnetic conductive tube adjacent to the annular flange, the pole plate further extending in an opposite direction relative to another pole plate to form a plurality of poles with enlarged inductive area;
- and
- a bobbin made of insulating material located between the second pole plate and the first pole plate, and insulated from the magnetic conductive tube and the first pole plate, a coil being wound around the bobbin and insulated from the two pole plates and the magnetic conductive tube.
1 more element
A stator comprising:
- first and second magnetic conductive tubes made of a magnetizable material, and at least one pole plate formed on one end of one of the magnetic conductive tubes to form a combined tube/plate member, the pole plate further extending in an opposite direction relative to another pole plate to form a plurality of poles with enlarged inductive area;
- and
- a coil wound around the magnetic conductive tube and insulated with respect to the first and second pole plates.
A stator comprising:
- first and second magnetic conductive tubes made of magnetizable material, and a first pole plate formed on one end of the first magnetic conductive tube to form a combined tube/plate member, the first pole plate further extending in an opposite direction relative to the second pole plate to form a plurality of poles with enlarged inductive area;
- a bobbin made of insulating material located between the second pole plate and the first pole plate, and insulated from the magnetic conductive tube and the first pole plate, a coil being wound around the bobbin and insulated from the two pole plates and the magnetic conductive tube.
A motor comprising:
- a magnetic conductive tube made of magnetizable material and a first pole plate formed on one end of the magnetic conductive tube, the first pole plate further including a plurality of poles;
- a second pole plate, including a plurality of poles, said second pole plate being sleeved to the magnetic conductive tube and held on the magnetic conductive tube by means of a small diameter flange on the magnetic conductive tube;
- a coil wound around the magnetic conductive tube and insulated with respect to the first and second pole plates and the magnetic conductive tube;
- a rotor having a ring-shaped permanent magnet and a shaft extending through the magnetic conductive tube;
- and
- a circuit board having a Hall IC and control elements for controlling rotation of the rotor.
3 more elements
A motor comprising:
- a magnetic conductive tube made of magnetizable material and a first pole plate formed on one end of the magnetic conductive tube, the first pole plate further including a plurality of poles;
- a second pole plate, including a plurality of poles, said second pole plate being sleeved to the magnetic conductive tube and held on the magnetic conductive tube by means of a small diameter flange on the magnetic conductive tube;
- a bobbin made of insulating material located between the second pole plate and the first pole plate, and insulated from the magnetic conductive tube and the first pole plate;
- a coil wound around the bobbin and insulated from the two pole plates and the magnetic conductive tube;
- a rotor having a ring-shaped permanent magnet and a shaft extending through the magnetic conductive tube;
- and
- a circuit board having a Hall IC and control elements for controlling rotation of the rotor.
4 more elements
A motor comprising:
- a combined tube/plate member including a magnetic conductive tube made of magnetizable material and a first pole plate formed on one end of the magnetic conductive tube, the first pole plate further extending in an opposite direction relative to the tube to form a plurality of poles with enlarged inductive area;
- a second pole plate, including plurality of poles, said second pole plate being sleeved to the magnetic conductive tube, the second pole plate further extending in an opposite direction relative to the other pole plate to form a plurality of poles with enlarged inductive area;
- a coil wound around the magnetic conductive tube between the two pole plates and insulated with respect to the two pole plates and the magnetic conductive tube;
- a rotor having a ring-shaped permanent magnet and a shaft extending through the magnetic conductive tube;
- and
- a circuit board having a Hall IC and control elements for controlling rotation of the rotor.
3 more elements
A heat dissipating device comprising:
- a combined tube/plate member including a magnetic conductive tube made of magnetizable material and a first pole plate formed on one end of the magnetic conductive tube, the first pole plate further extending in an opposite direction relative to the tube to form a plurality of poles with enlarged inductive area;
- a second pole plate, including plurality of poles, said second pole plate being sleeved to the magnetic conductive tube, the second pole plate further extending in an opposite direction relative to the other pole plate to form a plurality of poles with enlarged inductive area;
- a coil wound around the magnetic conductive tube between the two pole plates and insulated with respect to the two pole plates and the magnetic conductive tube;
- a fan having a plurality of blades and a shaft which rotates inside the magnetic conductive tube, the fan further having a ring-shaped permanent magnet;
- a circuit board having a Hall IC and control elements for controlling rotation of the fan;
- and
- a heat dissipating member having a hole which holds the magnetic conductive tube.
4 more elements
A motor comprising:
- a combined tube/plate member including a magnetic conductive tube made of magnetizable material and an annular flange formed on one end of the magnetic conductive tube;
- a pole plate sleeved to the magnetic conductive tube adjacent to the annular flange, the pole plate further extending in an opposite direction relative to another pole plate to form a plurality of poles with enlarged inductive area;
- a coil wound around the magnetic conductive tube and insulated with respect to the pole plates and the magnetic conductive tube;
- a rotor having a ring-shaped permanent magnet and a shaft extending through the magnetic conductive tube;
- and
- a circuit board having a Hall IC and control elements for controlling rotation of the rotor.
3 more elements
A motor comprising:
- a combined tube/plate member including a magnetic conductive tube made of magnetizable material and an annular flange formed on one end of the magnetic conductive tube;
- a pole plate sleeved to the magnetic conductive tube adjacent to the annular flange, the pole plate further extending in an opposite direction relative to another pole plate to form a plurality of poles with enlarged inductive area;
- and
- a bobbin made of insulating material located between the second pole plate and the first pole plate, and insulated from the magnetic conductive tube and the first pole plate, a coil being wound around the bobbin and insulated from the two pole plates and the magnetic conductive tube;
- a rotor having a ring-shaped permanent magnet and a shaft extending through the magnetic conductive tube;
- and
- a circuit board having a Hall IC and control elements for controlling rotation of the rotor.
4 more elements
A motor comprising:
- first and second magnetic conductive tubes made of a magnetizable material, and at least one pole plate formed on one end of one of the magnetic conductive tubes to form a combined tube/plate member, the pole plate further extending in an opposite direction relative to another pole plate to form a plurality of poles with enlarged inductive area;
- and
- a coil wound around the magnetic conductive tube and insulated with respect to the first and second pole slates and the magnetic conductive tube;
- a rotor having a ring-shaped permanent magnet and a shaft extending through one of the magnetic conductive tubes;
- and
- a circuit board having a Hall IC and control elements for controlling rotation of the rotor.
3 more elements
A motor comprising:
- first and second magnetic conductive tubes made of magnetizable material, and a first pole plate formed on one end of the first magnetic conductive tube to form a combined tube/plate member, the first pole plate further extending in an opposite direction relative to the second pole plate to form a plurality of poles with enlarged inductive area;
- a bobbin made of insulating material located between the second pole plate and the first pole plate, and insulated from the magnetic conductive tube and the first pole plate, a coil being wound around the bobbin and insulated from the two pole plates and the magnetic conductive tube;
- a rotor having a ring-shaped permanent magnet and a shaft extending through one of the magnetic conductive tubes;
- and
- a circuit board having a Hall IC and control elements for controlling rotation of the rotor.
2 more elements
A heat dissipating device comprising:
- a combined tube/plate member including a magnetic conductive tube made of magnetizable material and a first pole plate formed on one end of the magnetic conductive tube, the first pole plate further including a plurality of poles;
- a second pole plate, including a plurality of poles, said second pole plate being sleeved to the magnetic conductive tube and held on the magnetic conductive tube by means of a small diameter flange on the magnetic conductive tube;
- a coil wound around the magnetic conductive tube and insulated with respect to the first and second pole plates and the magnetic conductive tube;
- a fan having a plurality of blades and a shaft which rotates inside the magnetic conductive tube, the fan further having a ring-shaped permanent magnet;
- a circuit board having a Hall IC and control elements for controlling rotation of the fan;
- and
- a heat dissipating member having a hole which holds the magnetic conductive tube.
4 more elements
A heat dissipating device comprising:
- a combined tube/plate member including a magnetic conductive tube made of magnetizable material and a first pole plate formed on one end of the magnetic conductive tube, the first pole plate further including a plurality of poles;
- a second pole plate, including a plurality of poles, said second pole plate being sleeved to the magnetic conductive tube and held on the magnetic conductive tube by means of a small diameter flange on the magnetic conductive tube;
- a bobbin made of insulating material located between the second pole plate and the first pole plate, and insulated from the magnetic conductive tube and the first pole plate;
- a coil wound around the bobbin and insulated from the two pole plates and the magnetic conductive tube;
- a fan having a plurality of blades and a shaft which rotates inside the magnetic conductive tube, the fan further having a ring-shaped permanent magnet;
- a circuit board having a Hall IC and control elements for controlling rotation of the fan;
- and
- a heat dissipating member having a hole which holds the magnetic conductive tube.
5 more elements
A heat dissipating device comprising:
- a combined tube/plate member including a magnetic conductive tube made of magnetizable material and a first pole plate formed on one end of the magnetic conductive tube, the first pole plate further extending in an opposite direction relative to the tube to form a plurality of poles with enlarged inductive area;
- a second pole plate, including plurality of poles, said second pole plate being sleeved to the magnetic conductive tube, the second pole plate further extending in an opposite direction relative to the other pole plate to form a plurality of poles with enlarged inductive area;
- a coil wound around the magnetic conductive tube between the two pole plates and insulated with respect to the two pole plates and the magnetic conductive tube;
- a fan having a plurality of blades and a shaft which rotates inside the magnetic conductive tube, the fan further having a ring-shaped permanent magnet;
- a circuit board having a Hall IC and control elements for controlling rotation of the fan;
- and
- a heat dissipating member having a hole which holds the magnetic conductive tube.
4 more elements
A heat dissipating device comprising:
- a combined tube/plate member including a magnetic conductive tube made of magnetizable material and a first pole plate formed on one end of the magnetic conductive tube, the first pole plate further extending in an opposite direction relative to the tube to form a plurality of poles with enlarged inductive area;
- a second pole plate, including plurality of poles, said second pole plate being sleeved to the magnetic conductive tube, the second pole plate further extending in an opposite direction relative to the other pole plate to form a plurality of poles with enlarged inductive area;
- a bobbin made of insulating material located between the second pole plate and the first pole plate, and insulated from the magnetic conductive tube and the first pole plate, a coil being wound around the bobbin and insulated from the two pole plates and the magnetic conductive tube;
- a fan having a plurality of blades and a shaft which rotates inside the magnetic conductive tube, the fan further having a ring-shaped permanent magnet;
- a circuit board having a Hall IC and control elements for controlling rotation of the fan;
- and
- a heat dissipating member having a hole which holds the magnetic conductive tube.
4 more elements
A heat dissipating device comprising:
- a combined tube/plate member including a magnetic conductive tube made of magnetizable material and an annular flange formed on one end of the magnetic conductive tube;
- a pole plate sleeved to the magnetic conductive tube adjacent to the annular flange, the pole plate further extending in an opposite direction relative to another pole plate to form a plurality of poles with enlarged inductive area;
- a coil wound around the magnetic conductive tube and insulated with respect to the pole plates and the magnetic conductive tube;
- a fan having a plurality of blades and a shaft which rotates inside the magnetic conductive tube, the fan further having a ring-shaped permanent magnet;
- a circuit board having a Hall IC and control elements for controlling rotation of the fan;
- and
- a heat dissipating member having a hole which holds the magnetic conductive tube.
4 more elements
A heat dissipating device comprising:
- a combined tube/plate member including a magnetic conductive tube made of magnetizable material and an annular flange formed on one end of the magnetic conductive tube;
- a pole plate sleeved to the magnetic conductive tube adjacent to the annular flange, the pole plate further extending in an opposite direction relative to another pole plate to form a plurality of poles with enlarged inductive area;
- and
- a bobbin made of insulating material located between the second pole plate and the first pole plate, and insulated from the magnetic conductive tube and the first pole plate, a coil being wound around the bobbin and insulated from the two pole plates and the magnetic conductive tube;
- a fan having a plurality of blades and a shaft which rotates inside the magnetic conductive tube, the fan further having a ring-shaped permanent magnet;
- a circuit board having a Hall IC and control elements for controlling rotation of the fan;
- and
- a heat dissipating member having a hole which holds the magnetic conductive tube.
5 more elements
A heat dissipating device comprising:
- first and second magnetic conductive tubes made of magnetizable material, and a first pole plate formed on one end of the first magnetic conductive tube to form a combined tube/plate member, the first pole plate further extending in an opposite direction relative to the second pole plate to form a plurality of poles with enlarged inductive area;
- respective interiors of the two magnetic conductive tubes are connected by a tube-shaped support element;
- a coil wound around the magnetic conductive tube and insulated with respect to the first and second pole plates and the magnetic conductive tube;
- a fan having a plurality of blades and a shaft which rotates inside the magnetic conductive tube, the fan further having a ring-shaped permanent magnet;
- a circuit board having a Hall IC and control elements for controlling rotation of the fan;
- and
- a heat dissipating member having a hole which holds the magnetic conductive tube.
4 more elements
A heat dissipating device comprising:
- first and second magnetic conductive tubes made of magnetizable material, and a first pole plate formed on one end of the first magnetic conductive tube to form a combined tube/plate member, the first pole plate further extending in an opposite direction relative to the second pole plate to form a plurality of poles with enlarged inductive area;
- respective interiors of the two magnetic conductive tubes are connected by a tube-shaped support element;
- a bobbin made of insulating material located between the second pole plate and the first pole plate, and insulated from the magnetic conductive tube and the first pole plate, a coil being wound around the bobbin and insulated from the two pole plates and the magnetic conductive tube;
- a fan having a plurality of blades and a shaft which rotates inside the magnetic conductive tube, the fan further having a ring-shaped permanent magnet;
- a circuit board having a Hall IC and control elements for controlling rotation of the fan;
- and
- a heat dissipating member having a hole which holds the magnetic conductive tube.
4 more elements
A heat dissipating device comprising:
- a combined tube/plate member including a magnetic conductive tube made of magnetizable material and a first pole plate formed on one end of the magnetic conductive tube, the first pole plate further including a plurality of poles;
- a second pole plate, including a plurality of poles, said second pole plate being sleeved to the magnetic conductive tube and held on the magnetic conductive tube by means of a small diameter flange on the magnetic conductive tube;
- a coil wound around the magnetic conductive tube and insulated with respect to the first and second pole plates and the magnetic conductive tube;
- a fan having a plurality of blades and a shaft which rotates inside the magnetic conductive tube, the fan further having a ring-shaped permanent magnet;
- a circuit board having a Hall IC and control elements for controlling rotation of the fan;
- and
- a case which holds the magnetic conductive tube.
4 more elements
A heat dissipating device comprising:
- a combined tube/plate member including a magnetic conductive tube made of magnetizable material and a first pole plate formed on one end of the magnetic conductive tube, the first pole plate further including a plurality of poles;
- a second pole plate, including a plurality of poles, said second pole plate being sleeved to the magnetic conductive tube and held on the magnetic conductive tube by means of a small diameter flange on the magnetic conductive tube;
- a bobbin made of insulating material located between the second pole plate and the first pole plate, and insulated from the magnetic conductive tube and the first pole plate;
- a coil wound around the bobbin and insulated from the two pole plates and the magnetic conductive tube;
- a fan having a plurality of blades and a shaft which rotates inside the magnetic conductive tube, the fan further having a ring-shaped permanent magnet;
- a circuit board having a Hall IC and control elements for controlling rotation of the fan;
- and
- a case which holds the magnetic conductive tube.
5 more elements
A heat dissipating device comprising:
- a combined tube/plate member including a magnetic conductive tube made of magnetizable material and a first pole plate formed on one end of the magnetic conductive tube, the first pole plate farther extending in an opposite direction relative to the tube to form a plurality of poles with enlarged inductive area;
- a second pole plate, including a plurality of poles, said second pole plate being sleeved to the magnetic conductive tube, the second pole plate further extending in an opposite direction relative to the other pole plate to form a plurality of poles with enlarged inductive area;
- and
- a coil wound around the magnetic conductive tube between the two pole plates and insulated with respect to the two pole plates and the magnetic conductive tube;
- a fan having a plurality of blades and a shaft which rotates inside the magnetic conductive tube, the fan further having a ring-shaped permanent magnet;
- a circuit board having a Hall IC and control elements for controlling rotation of the fan;
- and
- a case which holds the magnetic conductive tube.
5 more elements
A heat dissipating device comprising:
- a combined tube/plate member including a magnetic conductive tube made of magnetizable material and a first pole plate formed on one end of the magnetic conductive tube, the first pole plate further extending in an opposite direction relative to the tube to form a plurality of poles with enlarged inductive area;
- a second pole plate, including plurality of poles, said second pole plate being sleeved to the magnetic conductive tube, the second pole plate further extending in an opposite direction relative to the other pole plate to form a plurality of poles with enlarged inductive area;
- a bobbin made of insulating material located between the second pole plate and the first pole plate, and insulated from the magnetic conductive tube and the first pole plate, a coil being wound around the bobbin and insulated from the two pole plates and the magnetic conductive tube;
- a fan having a plurality of blades and a shaft which rotates inside the magnetic conductive tube, the fan further having a ring-shaped permanent magnet;
- a circuit board having a Hall IC and control elements for controlling rotation of the fan;
- and
- a case which holds the magnetic conductive tube.
4 more elements
A heat dissipating device comprising:
- a combined tube/flange member including a magnetic conductive tube made of magnetizable material and an annular flange formed on one end of the magnetic conductive tube;
- a pole plate sleeved to the magnetic conductive tube adjacent to the annular flange, the pole plate further extending in an opposite direction relative to another pole plate to form a plurality of poles with enlarged inductive area;
- a coil wound around the magnetic conductive tube and insulated with respect to the pole plates and the magnetic conductive tube;
- a fan having a plurality of blades and a shaft which rotates inside the magnetic conductive tube, the fan further having a ring-shaped permanent magnet;
- a circuit board having a Hall IC and control elements for controlling rotation of the fan;
- and
- a case which holds the magnetic conductive tube.
4 more elements
A heat dissipating device comprising:
- a combined tube/flange member including a magnetic conductive tube made of magnetizable material and an annular flange formed on one end of the magnetic conductive tube;
- a pole plate sleeved to the magnetic conductive tube adjacent to the annular flange, the pole plate further extending in an opposite direction relative to another pole plate to form a plurality of poles with enlarged inductive area;
- and
- a bobbin made of insulating material located between the second pole plate and the first pole plate, and insulated from the magnetic conductive tube and the first pole plate, a coil being wound around the bobbin and insulated from the two pole plates and the magnetic conductive tube;
- a fan having a plurality of blades and a shaft which rotates inside the magnetic conductive tube, the fan further having a ring-shaped permanent magnet;
- a circuit board having a Hall IC and control elements for controlling rotation of the fan;
- and
- a case which holds the magnetic conductive tube.
5 more elements
A heat dissipating device comprising:
- first and second magnetic conductive tubes made of magnetizable material, and a first pole plate formed on one end of the first magnetic conductive tube to form a combined tube/-plate member, the first pole plate further extending in an opposite direction relative to the second pole plate to form a plurality of poles with enlarged inductive area;
- respective interiors of the two magnetic conductive tubes are connected by a tube-shaped support element;
- a coil wound around the magnetic conductive tube and insulated with respect to the first and second pole plates and the magnetic conductive tube;
- a fan having a plurality of blades and a shaft which rotates inside the magnetic conductive tube, the fan further having a ring-shaped permanent magnet;
- a circuit board having a Hall IC and control elements for controlling rotation of the fan;
- and
- a case which holds the magnetic conductive tube.
4 more elements
A heat dissipating device comprising:
- first and second magnetic conductive tubes made of magnetizable material, and a first pole plate formed on one end of the first magnetic conductive tube to form a combined tube/plate member, the first pole plate further extending in an opposite direction relative to the second pole plate to form a plurality of poles with enlarged inductive area;
- respective interiors of the two magnetic conductive tubes are connected by a tube-shaped support element;
- a bobbin made of insulating material located between the second pole plate and the first pole plate, and insulated from the magnetic conductive tube and the first pole plate, a coil being wound around the bobbin and insulated from the two pole plates and the magnetic conductive tube;
- a fan having a plurality of blades and a shaft which rotates inside the magnetic conductive tube, the fan further having a ring-shaped permanent magnet;
- a circuit board having a Hall IC and control elements for controlling rotation of the fan;
- and
- a case which holds the magnetic conductive tube.
4 more elements
Dependencies are inferred from the claim text.