20150256053 | Brush-less Motor - A brush-less motor is disclosed, comprising a stator, a rotor, a plurality of field-effect tubes, a commutation circuit board, a control circuit board and a motor end cap, wherein the motor end cap comprises a front end cap and a rear end cap which are mutually fixedly connected to form an integrated motor; the plurality of field-effect tubes is directly fixed at the motor front end cap; the commutation circuit board and the control circuit board are both connected to the motor front end cap. The field-effect tubes of the brush-less motor are directly installed on a housing of the motor, ensuring good heat dissipation, saving heat sinks and cost; the integrated brush-less motor runs more smoothly and imposes requirements which are not as high as those imposed by the split brush-less motor on the accuracy of the housing. Thus, the reject ratio of products during batch production is reduced. | 09-10-2015 |
20150251258 | Brush-less Chainsaw - A brush-less chainsaw is disclosed, comprising a housing, a brush-less motor, a transmission device, a power supply, an electronic commutator, a brake backplate, a chain plate, and a chain. The brush-less motor, the transmission device, and the electronic commutator are disposed in the housing. The brush-less motor is connected with the electronic commutator. A power output end of the brush-less motor is connected with the transmission device. The electronic commutator detects a position signal of the brush-less motor and controls the brush-less motor to drive the chain and the chain plate to rotate. The electronic commutator receives a brake signal from the brake backplate and transmits the signal to the brush-less motor. The brush-less motor drives the chain to brake according to the brake signal. The brush-less chainsaw has the advantage of optimizing the performance, along with small size, low cost, large torque, and small braking current. | 09-10-2015 |