Compact fan motor and electric device comprising a compact fan motor
A compact fan motor including a motor body having a tubular case accommodating a rotor, a permanent magnet, and brushes, and a pair of spring terminals that are connected to the brushes, sticks out from a peripheral wall of the tubular case, and has elasticity in a direction perpendicular to an axis of rotation of a shaft; an impeller fixed to the shaft sticking out from a front end of the tubular case; a holder having a case accommodating portion that is provided in a housing accommodating the motor body and impeller and has an inner wall surface extending in the direction of the axis of rotation of the shaft, and a motor body insertion opening provided at an edge of the case accommodating portion; and a pair of conductors provided on the inner wall surface of the holder while contacting with the spring terminals.
1. A compact fan motor comprising:
a motor body having a rotor with a commutator fixed to a shaft, a stator surrounding the rotor, a pair of brushes slidingly contacting with the commutator, a tubular case for accommodating the rotor, the stator, and the brushes, and a pair of spring terminals connected to the brushes, sticking out from a peripheral wall of the tubular case, and having elasticity in a direction perpendicular to an axis of rotation of the shaft;
an impeller fixed to the shaft that sticks out from a front end of the tubular case;
a holder having a case accommodating portion that is provided in a housing accommodating the motor body and the impeller and has an inner wall surface extending in the direction of the axis of rotation of the shaft, and a motor body insertion opening provided at an edge of the case accommodating portion; and
a pair of conductors provided on the inner wall surface of the holder and contacts with the spring terminals.
2. The compact fan motor according to claim 1 , wherein
the motor body has a terminal block on which the spring terminals are attached, a pair of parallel sidewall surfaces extending in the direction of the axis of rotation of the shaft is provided to the terminal block, a terminal block accommodating portion extending in the direction of the axis of rotation of the shaft and communicating with the case accommodating portion is provided in the holder, and a pair of parallel guide surfaces extending in the direction of the axis of rotation of the shaft is formed in the terminal block accommodating portion so as to sandwich the pair of the sidewall surfaces.
3. The compact fan motor according to claim 2 , wherein the conductors are provided on the inner wall surface of the terminal block accommodating portion.
4. The compact fan motor according to claim 1 , wherein the motor body is fixed inside the holder by pressing the edge on a side of the motor body insertion opening of the holder.
5. The compact fan motor according to claim 1 , further comprising:
a tubular outer frame portion extending in the direction of the axis of rotation of the shaft; and
a beam connecting the outer frame portion and the case accommodating portion, wherein
the impeller sends out air in the direction along the axis of rotation of the shaft.
6. An electronic device comprising the compact fan motor according to claim 1 .