Brushless DC motor having structures for mounting a hall element and a magnetic ring outside a motor casing
AssigneeZhongshan Broad-Ocean Motor Co., Ltd.
InventorSongfa Tang
Life of this patent
Estimating the term…
Abstract
A brushless DC motor including a motor casing, a stator component, and a rotor component. The stator component and the rotor component are respectively arranged inside the motor casing. The rotor component includes a rotor iron core and a rotating shaft supporting the rotor iron core. A shaft extension end of the rotating shaft is arranged with a magnetic ring. One end of the motor casing is provided with an end cover. The center of the outer end surface of the end cover is provided with a groove. The magnetic ring is arranged inside the groove. A Hall induction device is arranged outside the groove and close to the magnetic ring. The motor is reasonably structured, compact, cost-effective, installation friendly, and highly reliable.
Claims12
A brushless DC motor, comprising:
- a) a motor casing;
- b) a stator component;
- and
- c) a rotor component;
- wherein:
- the stator component and the rotor component are respectively arranged inside the motor casing;
- the rotor component comprises a rotor iron core and a rotating shaft supporting the rotor iron core, and a shaft extension end of the rotating shaft is arranged with a magnetic ring;
- one end of the motor casing is arranged with an end cover;
- a center of an outer end surface of the end cover is arranged with a groove;
- the magnetic ring is arranged inside the groove;
- a Hall induction device is arranged outside the groove and close to the magnetic ring;
- the Hall induction device comprises a circuit board mounted with a Hall element and an installation kit, one end of the installation kit is connected with the circuit board and the other end supports the outer end of the end cover;
- the installation kit is arranged with a plurality of uprights;
- the circuit board is disposed with a plurality of through holes;
- the through holes are fit together with the uprights;
- a middle part of the installation kit is arranged with a convex ring body embedded into the groove;
- an outer edge surface of the convex ring body fits closely with a wall surface of the groove;
- and
- an outer side of the groove forms a cylinder body with an installation foot arranged outside;
- the installation foot is arranged with a screw hole;
- strip-shaped holes are arranged on corresponding upper and lower positions of the circuit board and the installation kit, respectively;
- screws passes through the strip-shaped holes and screw holes to connect the circuit board, the installation kit, and the installation feet together.
Dependencies are inferred from the claim text.