Patent ID: 11937545
Assignee: NANJING CHERVON INDUSTRY CO., LTD.
Field: Other special machines (Mechanical engineering)
Classification: CPC A | IPC A

Claim 0:
1. A lawn mower, comprising:
a blade assembly comprising a first blade and a second blade, wherein the second blade is disposed on a lower side of the first blade and a ratio of a sweep volume to a number of cutting portions of the blade assembly is about 1700 cm3;
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;
a battery pack configured to provided power source for the motor, wherein the battery pack comprises a battery pack housing and battery cells provided in the battery pack housing; and
a mounting assembly configured to mount the blade assembly to the motor,
wherein when the motor drives the blade assembly to rotate around the rotation axis with no load, a working time of the lawn mower with 100 WH energy consumption of the battery pack is defined as a no-load battery life of the lawn mower, and the no-load battery life of the lawn mower is greater than or equal to 9 min,
wherein the first blade is substantially coplanar along an entire length of the first blade, the first blade comprises a first mounting portion provided with a first mounting hole for mounting the first blade about the rotation axis, and the second blade comprises a second mounting portion provided with a second mounting hole for mounting the second blade about the rotation axis, and
wherein the first blade further comprises a first cutting portion provided with a first cutting edge, the second blade further comprises a second cutting portion provided with a second cutting edge and a falling portion located along the length of the second blade so that the second mounting portion is proximate to the first mounting portion and the second cutting portion extends away from the first cutting portion, and the falling portion connects the second mounting portion and the second cutting portion, and
wherein the falling portion extends from the first blade at a location adjacent the first cutting portion.