Cutting mechanism having cutter disc assembly and fan blade for mower
A cutting mechanism for a mower is provided, including a cutter disc, a shroud detachably connected to the cutter disc to define an internal cavity, a power component, a cutting knife, and a fan blade. The cutting knife and the fan blade are disposed in the internal cavity and connected to the output shaft of the power component. The fan blade, when driven by the output shaft, generates an airflow that draws air through a suction inlet into the internal cavity while the cutting knife rotates to perform cutting.
1 . A cutting mechanism, comprising:
a cutter disc;
a shroud, detachably connected to the cutter disc and enclosing the cutter disc to form an internal cavity, at least one of the cutter disc or the shroud forming a suction inlet communicating with the internal cavity, and the suction inlet being arranged at a circumferential edge of the shroud;
a power component, mounted on the cutter disc and provided with an output shaft extending into the internal cavity;
a cutting knife, housed within the internal cavity and connected to the output shaft for rotation under a drive of the output shaft; and
a fan blade, housed within the internal cavity and detachably connected to the cutting knife or the output shaft, the fan blade being configured to rotate under the drive of the output shaft to form a driving airflow from the suction inlet towards the internal cavity,
wherein:
a rotation axis of the power component passes through a center portion of the cutting knife and a center portion of the fan blade to arrange the center portion of the cutting knife closer to the power component than the center portion of the fan blade; and
the cutting knife and the fan blade are circumferentially staggered with respect to each other about the rotation axis of the power component.
2 . The cutting mechanism according to claim 1 , wherein the suction inlet is formed by the shroud.
3 . The cutting mechanism according to claim 1 , wherein:
the fan blade comprises a main connecting portion, located at the center portion of the fan blade, detachably connected to the cutting knife, and at least two blades; and
the at least two blades are distributed at intervals along a circumference of the main connecting portion.
4 . The cutting mechanism according to claim 1 , wherein:
the at least one of the cutter disc or the shroud is further configured to form a discharge port configured to communicate with the internal cavity; and
the fan blade is configured to rotate under the drive of the output shaft to form a driving airflow from the internal cavity towards the discharge port.
5 . The cutting mechanism according to claim 1 , further comprising:
a shredding knife housed within the internal cavity and arranged along an axial direction of the output shaft on a side of the fan blade facing away from the cutting knife, wherein the shredding knife is detachably connected to at least one of the fan blade, the cutting knife, or the output shaft, for rotating under the drive of the output shaft.
6 . The cutting mechanism according to claim 3 , wherein:
the main connecting portion of the fan blade is detachably connected to the cutting knife at a side of the cutting knife away from the power component.
7 . The cutting mechanism according to claim 3 , wherein:
one of the at least two blades is bent and extends toward the power component.
8 . The cutting mechanism according to claim 3 , wherein:
a portion of the cutting knife is arranged between the at least two blades of the fan blade.
9 . The cutting mechanism according to claim 4 , wherein:
the discharge port is arranged at another circumferential edge of the shroud opposite the circumferential edge of the shroud where the suction inlet is formed.
10 . The cutting mechanism according to claim 5 , wherein:
the rotation axis of the power component passes through the center portion of the cutting knife, the center portion of the fan blade, and a center portion of the shredding knife in sequence.
11 . The cutting mechanism according to claim 5 , wherein:
the shredding knife comprises at least one knife blade extending away from the power component.
12 . The cutting mechanism according to claim 5 , wherein:
a radial dimension of the shredding knife is less than a radial dimension of the cutting knife.
13 . The cutting mechanism according to claim 12 , wherein:
a diameter dimension of the fan blade is greater than a diameter dimension of the cutting knife.
14 . The cutting mechanism according to claim 1 , further comprising:
a plurality of rotary buckle structures arranged at a periphery of the cutter disc to detachably connect the cutter disc and the shroud.
15 . The cutting mechanism according to claim 1 , wherein:
a diameter dimension of the fan blade is greater than a diameter dimension of the cutting knife.