US-20260125866-A1 - SNOW THROWER

US20260125866A1US 20260125866 A1US20260125866 A1US 20260125866A1US-20260125866-A1

Abstract

A garden tool includes: a main body, a working system and a power system. The working system is arranged on the main body and includes a transmission shaft and a working unit connected with the transmission shaft. The power system includes a first motor to drive the working unit to work. An output shaft of the first motor is connected to the transmission shaft directly, a rotation speed of the output shaft is substantially the same as a rotation speed of the transmission shaft, and a rotation axis of the transmission shaft and a rotation axis of the output shaft are on a same line, so that when the first motor rotates, power is transmitted to the transmission shaft through the output shaft.

Inventors

Shuhua Li

Assignees

GREENWORKS (JIANGSU) CO., LTD.

Dates

Publication Date: 20260507
Application Date: 20260104
Priority Date: 20200910

Claims (16)

1 . A garden tool, comprising: a main body, a working system, arranged on the main body and comprising a transmission shaft and a working unit connected with the transmission shaft; and a power system, comprising a first motor to drive the working unit to work; wherein an output shaft of the first motor is connected to the transmission shaft directly, a rotation speed of the output shaft is substantially the same as a rotation speed of the transmission shaft, and a rotation axis of the transmission shaft and a rotation axis of the output shaft are on a same line, so that when the first motor rotates, power is transmitted to the transmission shaft through the output shaft.
2 . The garden tool of claim 1 , wherein the output shaft of the first motor is connected to the transmission shaft through a coupling, so that when the first motor rotates, the coupling and the transmission shaft are driven to rotate synchronously.
3 . The garden tool of claim 1 , wherein the working system further comprises a deceleration assembly, the transmission shaft is connected with the deceleration assembly, and the auger assembly is connected with the deceleration assembly.
4 . The garden tool of claim 1 , further comprising: a housing, the garden tool further comprises a battery assembly installed on the housing to provide energy for the first motor.
5 . The garden tool of claim 4 , wherein: the battery assembly comprises a battery case, a battery pack housed in the battery case, and a battery cover rotatably installed on the battery case, the battery pack is inserted and removed in a direction which is perpendicular to the housing, and the battery cover and the battery case jointly seal the battery pack.
6 . The garden tool of claim 5 , wherein the number of the battery packs is a plurality, and the plurality of the battery packs supply power in series or in parallel or in a combination of series and parallel.
7 . The garden tool of claim 4 , wherein a circuit board located on a side of the first motor and simultaneously housed in the housing and the battery assembly installed on the housing and located outside the housing to provide energy for the first motor.
8 . The garden tool of claim 7 , further comprising: a walking system, the walking system including a traveling wheel and a second motor, the second motor being positioned in the housing.
9 . The garden tool of claim 8 , wherein, the housing being provided with only one, the only one housing are configured to accommodate the first motor, the circuit board and the second motor simultaneously; the first motor, the second motor and the circuit board are simultaneously accommodated in the only one housing and arranged close to each other, there are no separating walls between any two of the first motor, the second motor and the circuit board, and there is empty space surrounding the first motor, the second motor and the circuit board.
10 . The garden tool of claim 8 , wherein, the housing being provided with only one, the only one housing are provided without separating walls and including surrounding empty space and are configured to accommodate the first motor, the circuit board and the second motor simultaneously.
11 . The garden tool of claim 1 , further comprising a housing, wherein, the housing being provided with only one, the only one housing are provided without separating walls and including surrounding empty space.
12 . The garden tool of claim 11 , further comprising a housing, wherein, the first motor, a second motor and a circuit board are simultaneously accommodated in the only one housing.
13 . The garden tool of claim 1 , wherein the output shaft of the first motor is arranged substantially horizontally, and the transmission shaft is arranged substantially horizontally.
14 . The garden tool of claim 1 , further comprising: an operation assembly, connected to the working system.
15 . A garden tool, comprising: a working system, comprising a transmission shaft and a working unit connected with the transmission shaft; and a power system, comprising a first motor to drive the working unit to work; wherein an output shaft of the first motor is connected to the transmission shaft directly, and a rotation speed of the output shaft is substantially the same as a rotation speed of the transmission shaft, so that when the first motor rotates, power is transmitted to the transmission shaft through the output shaft.
16 . A snow thrower, comprising: a snow removal system; and a power system configured to drive the snow removal system to work, the power system including a first motor; wherein the snow removal system includes a transmission shaft, an auger assembly in transmission connection with the transmission shaft, an output shaft of the first motor is connected to the transmission shaft directly, and a rotation axis of the transmission shaft and a rotation axis of the output shaft are on a same line, so that when the first motor rotates, power is transmitted to the transmission shaft through the output shaft.

Description

CROSS REFERENCE TO RELATED APPLICATION This application is a continuation application of U.S. patent application Ser. No. 17/467,440 filed on Sep. 6, 2021. U.S. patent application Ser. No. 17/467,440 claims priority to and the benefit from Chinese Patent Application No. 202010945490.8, filed on 2020/9/10, and Application No. 202021966141.6, filed on 2020/9/10, the disclosure of which is hereby incorporated by reference herein in its entirety for all purposes. TECHNICAL FIELD The disclosure relates to a snow thrower, which belongs to the technical field of garden tools. BACKGROUND Conventional two-stage or three-stage snow thrower are mostly engine-driven snow throwers, and there are few two-stage snow thrower driven by lithium batteries on the market. The disadvantages of these engine-powered two-stage or three-stage snow throwers are: the engine or the working motor transmits the power to the snow throwing impeller and the auger through the belt. This kind of transmission method requires replacement and maintenance of the belt after the belt is used for a long time, which is very inconvenient. Moreover, the belt is prone to dimensional errors and inconsistencies in the process of design, manufacturing and assembly, and the belt is also prone to deformation and aging when it is loaded for a long time, which will cause a certain degree of relaxation in the tension of the belt. If this continues, the efficiency and power of the power output will be reduced, which affects the performance of snow sweeping and snow throwing. In view of this, it is necessary to propose improvements to the conventional transmission methods to solve the problems mentioned above. SUMMARY The disclosure provides a snow thrower which uses a first motor to directly drive the snow removal system to work, and no longer uses belts or gears to reduce speed, so that it is more energy-saving and the transmission efficiency is higher. A snow thrower is provided and includes: a snow removal system and a power system configured to drive the snow removal system to work. The power system includes a first motor. The snow removal system includes a transmission shaft, an auger assembly in transmission connection with the transmission shaft, and a snow throwing impeller mounted to the transmission shaft. An output shaft of the first motor is connected with the transmission shaft directly, so that when the first motor rotates, power is transmitted to the transmission shaft through the output shaft, so as to drive the auger assembly to rotate. In an embodiment, the output shaft of the first motor is connected to the transmission shaft through a coupling, so that when the first motor rotates, the coupling and the transmission shaft are driven to rotate synchronously. In an embodiment, the snow removal system further includes a deceleration assembly, the transmission shaft is connected with the deceleration assembly, and the auger assembly is connected with the deceleration assembly. In an embodiment, the snow removal system further includes an auger housing covering the outside of the deceleration assembly and the auger assembly, an impeller housing covering the outside of the snow throwing impeller and a chute assembly communicated with the impeller housing, the snow throwing impeller is used for throwing the snow which is swept into the impeller housing through the auger assembly away from the chute assembly. In an embodiment, the snow thrower further includes a housing, the first motor is located inside the housing, the snow thrower further includes a battery assembly installed on the housing to provide energy for the first motor. In an embodiment, the battery assembly includes a battery case, a battery pack housed in the battery case, and a battery cover rotatably installed on the battery case, the battery pack is inserted and removed in a direction which is perpendicular to the housing, and the battery cover and the battery case jointly seal the battery pack. In an embodiment, there are plurality of battery packs, and the plurality of the battery packs supply power in series or in parallel or in a combination of series and parallel. In an embodiment, the battery assembly further includes a release button arranged on the battery case, the release button is used to release a lock between the battery pack and the battery case, so that the battery pack can be inserted and removed in the battery case. In an embodiment, the number of the battery pack is two, the number of the release button is also two, and the two release buttons are located on opposite sides of the battery case. In an embodiment, the snow thrower further includes a walking system, the walking system including a traveling wheel and a second motor, the second motor being positioned in the housing. In an embodiment, the output shaft of the first motor is arranged horizontally, and the transmission shaft is also arranged horizontally. In an embodiment, the snow thrower further includes an