JPS60181175U - Disc-type brushless motor with single-phase energization - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of a disc-type aspirator blower fan to which a disc-type brushless motor with one-phase current is applied, shown as the first embodiment of the present invention, and Fig. 2 shows the relationship between the position detection coil and the armature coil. Fig. 3 is a longitudinal sectional view of the disc-type brushless motor section, and Fig. 4 is a development of the armature coil and position detection coil and the field magnet. Fig. 5 is an explanatory diagram showing the preferred arrangement position of the electrical components for the energization control circuit according to the second embodiment of the present invention, and Fig. 6 is a longitudinal cross-section of the disc-type brushless motor section of Fig. 5. It is a front view. 6... Printed circuit board, 9... Position detection coil and armature coil, 10... Electrical components for energization control circuit, 13.
... Rotating fan, 13b... Fan, 16... Field magnet, 20.21... Terminal, Island... Armature coil, -... Position detection coil.

Claims (5)

[Scope of utility model registration request] (1) A field magnet with 2P (P is a positive integer of 2 or more) poles with N and S magnetic poles alternately is used as a rotor, and one or more armature coils and position detection are installed facing the field magnet. A printed circuit board on which coils and electrical components for the energization control circuit are arranged is arranged on the fixed side to form a stator armature,
Among the electrical components, the terminal of the electrical component that has a magnetic material as a terminal or the main body of the electrical component that has magnetism is connected to one magnetic pole width or almost one magnetic pole of the field magnet from the conductor part that contributes to the generated torque of the armature coil. A disc-type brushless motor that is energized in one phase, characterized in that it is disposed on a surface of a printed circuit board at a position separated by a width or in the same phase as the position. (2) Request for registration of a utility model characterized in that the position detection coil is an air-core type in which the radial conductor portion contributing to power generation has a magnetic pole width or an opening angle width approximately equal to the magnetic pole width of the field magnet. A disc-type brushless motor that is energized in one phase according to the range (1). (3) The armature coil is registered as a utility model, characterized in that the radial conductor portion that contributes to the generated torque is of an air-core type with an opening angle width that is or is approximately equal to the magnetic pole width of the field magnet. A disc-type brushless motor that is energized in one phase according to claim (1). (4) The method according to any one of claims (1) to (3) of the utility model registration claim, wherein the position detection coil and the armature coil are arranged in the same phase position. A disc-type brushless motor that is phase-energized. (5) One-phase energization according to claim (4) of the utility model registration claim, characterized in that the position detection coil and the armature coil are integrated by bi-core winding two conductive wires. disc type brushless motor.