Dual blade assembly for a lawn mower
AssigneeNanjing Chervon Industry Co., Ltd.
InventorsHaishen Xu, Toshinari Yamaoka, Jian Yang
Life of this patent
Estimating the term…
Abstract
A lawn mower includes a blade assembly configured to perform a cutting function, a deck formed with an accommodation space for accommodating at least a portion of the blade assembly, a motor configured to drive the blade assembly to rotate about a rotation axis, and a battery pack configured to power the motor. The blade assembly includes a first cutting portion configured to cut grass and a second cutting portion configured to cut grass. In the direction parallel to the rotation axis, the second cutting portion is located below the first cutting portion. The battery pack includes a battery pack housing and battery cells provided in the battery pack housing.
Claims19
A lawn mower, comprising:
- a blade assembly comprising a first blade and a second blade, wherein the blade assembly is configured to be rotatable about a rotation axis, the first blade comprises a first mounting portion provided with a first mounting hole and a first cutting portion for cutting grass, and the second blade comprises a second mounting portion provided with a second mounting hole and a second cutting portion for cutting grass;
- a deck formed with an accommodation space for accommodating at least a portion of the blade assembly;
- a motor comprising a drive shaft for driving the blade assembly to rotate about the rotation axis, wherein the drive shaft passes through the first mounting hole and the second mounting hole;
- a battery pack configured to provided power source for the motor;
- and
- a mounting assembly configured to mount the blade assembly to the drive shaft,
- wherein the mounting assembly comprises a drive member coupled to the drive shaft, the drive member is a fan, the drive member is provided with a drive portion, the first mounting portion further comprises a first positioning hole, the second mounting portion further comprises a second positioning hole, and the drive portion passes through the first positioning hole and the second positioning hole, and
- the first blade extends along a first longitudinal axis, and the first mounting hole and the first positioning hole are disposed on a straight line that obliquely intersects the first longitudinal axis, such that when the drive portion is inserted into the first positioning hole and the second positioning hole the blade assembly is fixed in a circumferential direction of the rotation axis relative to the drive member and a phase angle greater than zero (0) degrees is formed between the first blade and the second blade.
A lawn mower, comprising:
- a blade assembly comprising a first blade and a second blade, wherein the blade assembly is configured to be rotatable about a rotation axis, the first blade comprises a first mounting portion provided with a first mounting hole and a first cutting portion for cutting grass, and the second blade comprises a second mounting portion provided with a second mounting hole and a second cutting portion for cutting grass;
- a deck formed with an accommodation space for accommodating at least a portion of the blade assembly;
- a motor comprising a drive shaft for driving the blade assembly to rotate about the rotation axis, wherein the drive shaft passes through the first mounting hole and the second mounting hole;
- and
- a mounting assembly configured to mount the blade assembly to the drive shaft,
- wherein the mounting assembly comprises a drive member coupled to the drive shaft, the drive member is a fan, the fan is provided with a drive portion, the first mounting portion further comprises a first positioning hole, the second mounting portion further comprises a second positioning hole, the drive portion is inserted into the first positioning hole and the second positioning hole, the first blade extends along a first longitudinal axis, and the first mounting hole and the first positioning hole are disposed on a straight line that obliquely intersects the first longitudinal axis.
Dependencies are inferred from the claim text.