Snow thrower

Abstract

A snow thrower includes walking wheels, a snow sweeping assembly, and a snow intake housing; where the walking wheels support the snow thrower in walking on the ground; the snow sweeping assembly includes a rotating shaft and an auger disposed on the rotating shaft, where the rotating shaft is configured to rotate about a first axis; and the snow intake housing accommodates at least part of the snow sweeping assembly. The snow intake housing has a front opening portion for snow intake, and the distance L1 between a projection of a highest point of the front opening portion on a first plane and a projection of the first axis on the first plane is less than or equal to 20 mm, where the first plane is substantially parallel to the horizontal plane.

What is claimed is: 
     
         1 . A snow thrower, comprising:
 walking wheels for walking on the ground;   a snow sweeping assembly comprising a rotating shaft configured to rotate about a first axis and an auger disposed on the rotating shaft; and   a snow intake housing accommodating at least part of the snow sweeping assembly having a front opening portion for snow intake where a distance L 1  between a projection of a highest point of the front opening portion on a substantially horizontal first plane and a projection of the first axis on the first plane is less than or equal to 20 mm.   
     
     
         2 . The snow thrower according to  claim 1 , wherein the front opening portion comprises an inclined portion, and an angle α between the inclined portion and the first plane is greater than or equal to 30° and less than or equal to 90°. 
     
     
         3 . The snow thrower according to  claim 1 , wherein the front opening portion comprises an inclined portion, a length L 2  of a projection of the inclined portion on the first plane is greater than or equal to 0 and less than or equal to 0.5×D, and D denotes a diameter of the auger. 
     
     
         4 . The snow thrower according to  claim 1 , further comprising at least one battery pack configured to supply power to a first electric motor that drives the snow sweeping assembly to operate. 
     
     
         5 . The snow thrower according to  claim 1 , further comprising a discharge chute operable to rotate to change a snow discharge direction, wherein a height difference L 3  between a lower edge of the discharge chute and an upper edge of the snow intake housing is less than or equal to 50 mm. 
     
     
         6 . The snow thrower according to  claim 5 , wherein a ratio of the height difference L 3  to a total height L 4  of the discharge chute is less than or equal to 0.2. 
     
     
         7 . The snow thrower according to  claim 5 , wherein the snow intake housing further has a rear side surface, and a minimum distance L 5  between the discharge chute and the rear side surface is greater than or equal to 30 mm and less than or equal to 80 mm. 
     
     
         8 . The snow thrower according to  claim 5 , further comprising a second electric motor and a snow throwing member, wherein the second electric motor is configured to drive the snow throwing member to rotate to throw snow from the auger towards the discharge chute. 
     
     
         9 . The snow thrower according to  claim 1 , wherein the projection of the highest point of the front opening portion on the first plane is located in front of the projection of the first axis on the first plane. 
     
     
         10 . The snow thrower according to  claim 1 , wherein the projection of the highest point of the front opening portion on the first plane is located behind the projection of the first axis on the first plane. 
     
     
         11 . The snow thrower according to  claim 1 , wherein the projection of the highest point of the front opening portion on the first plane overlaps the projection of the first axis on the first plane. 
     
     
         12 . The snow thrower according to  claim 1 , wherein the snow intake housing has the front opening portion for snow intake and a ratio of a minimum distance L 6  between a projection of a rear edge of the auger on the first plane and the projection of the highest point of the front opening portion on the first plane to a diameter D of the auger is less than or equal to 0.65. 
     
     
         13 . The snow thrower according to  claim 1 , further comprising skid shoes disposed on the snow intake housing, wherein, along a front and rear direction, a ratio of a width W 1  of the skid shoes to a width W 2  of the snow intake housing is greater than or equal to 0.6 and less than or equal to 1. 
     
     
         14 . The snow thrower according to  claim 1 , further comprising a first electric motor powered by a battery pack and configured to drive the rotating shaft to rotate so as to drive the auger to rotate. 
     
     
         15 . The snow thrower according to  claim 14 , further comprising a discharge chute, a second electric motor, and a snow throwing member, wherein the discharge chute is operable to rotate to change a snow discharge direction, and the second electric motor is configured to drive the snow throwing member to rotate to throw snow from the auger towards the discharge chute. 
     
     
         16 . A snow thrower, comprising:
 walking wheels for walking on the ground;   a snow sweeping assembly comprising a rotating shaft configured to rotate about a first axis and an auger disposed on the rotating shaft;   a first electric motor powered by a battery pack and configured to drive the rotating shaft to rotate to drive the auger to rotate; and   a snow intake housing accommodating at least part of the snow sweeping assembly having a front opening portion for snow intake where a ratio of a minimum distance L 6  between a projection of a rear edge of the auger on a substantially horizontal first plane and a projection of a highest point of the front opening portion on the first plane to a diameter D of the auger is less than or equal to 0.65.   
     
     
         17 . The snow thrower according to  claim 16 , wherein the front opening portion comprises an inclined portion, and an angle α between the inclined portion and the first plane is greater than or equal to 30° and less than or equal to 90°. 
     
     
         18 . A snow thrower, comprising:
 walking wheels for walking on the ground;   a snow sweeping assembly comprising a rotating shaft configured to rotate about a first axis and an auger disposed on the rotating shaft; and   a snow intake housing accommodating at least part of the snow sweeping assembly having a front opening portion for snow intake where a projection of a highest point of the front opening portion on a first plane overlaps a projection of the first axis on the first plane or the projection of the highest point of the front opening portion on the first plane is located behind the projection of the first axis on the first plane.   
     
     
         19 . The snow thrower according to  claim 18 , wherein the front opening portion comprises an inclined portion, and an angle α between the inclined portion and the first plane is greater than or equal to 30° and less than or equal to 90°. 
     
     
         20 . The snow thrower according to  claim 18 , wherein the front opening portion comprises an inclined portion, a length L 2  of a projection of the inclined portion on the first plane is greater than or equal to 0 and less than or equal to 0.5×D, and D denotes a diameter of the auger.