Patent ID: 8567310

Claim:
An electric hand-held binding apparatus comprising: a wire feeding device including a wire disc configured to hold binding wire, a driving wire-feeding wheel rotatable about a driving wire-feeding wheel shaft, a driven wire-feeding wheel meshed with the driving wire-feeding wheel, and a wire-feeding bevel gear disposed on the driving wire-feeding shaft, wherein the wire feeding device is configured to convey the binding wire from the wire disc to a headpiece; a twisting device including a twisting shaft having an axis of rotation perpendicular to an axis of rotation of the driving wire-feeding wheel, a fork disposed on an end of the twisting shaft and at least partially within the headpiece, a twisting shaft spur gear disposed on the shaft, and a twisting shaft bevel gear disposed on the shaft and meshed with the wire-feeding bevel wheel, wherein the twisting device is configured to wrap an object with the binding wire; a cutoff device configured to cut the binding wires that are wrapped around the object to be bound; an electric motor configured to supply power to the wire-feeding device, the twisting device, and the cutoff device; a motor shaft gear disposed on an output shaft of the electric motor and meshed with the twisting shaft spur gear; a first single-direction bearing disposed between the driving wire-feeding wheel and the driving wire-feeding wheel shaft, the first single-direction bearing being configured to permit the driving wire-feeding wheel to rotate in only one direction; and a second single-direction bearing between the twisting shaft spur gear and the twisting shaft, the first single-direction bearing being configured to permit the driving wire-feeding wheel to rotate in only one direction; wherein the twisting shaft spur gear includes a groove on a surface in contact with the twisting shaft bevel gear, and the twisting shaft bevel gear includes a pillar configured to slide in the groove so that a rotation of the driving wire-feeding wheel shaft is desynchronized relative to a rotation of the twisting shaft.