Leaf clearing device

Patent metadata

Field	Value
Publication number	US-2018249646-A1
Application number	US-201615760150-A
Country	US
Kind code	A1
Filing date	Sep 9, 2016
Priority date	Sep 18, 2015
Publication date	Sep 6, 2018
Grant date	—

Abstract

This disclosure relates to a leaf cleaning device including: a housing; an air inlet configured to suck leaves into the housing; an air outlet configured to discharge leaves from the housing, the air outlet connected to a leaf collection apparatus; a motor located inside the housing; and a leaf pulverizing apparatus driven by the motor and configured to pulverize the leaves, wherein an area of the air inlet is greater than 260 square centimeters.

First claim

1 . A leaf cleaning device, comprising:
a housing; an air inlet configured to suck leaves into the housing; an air outlet configured to discharge the leaves from the housing, and the air outlet connected to a leaf collection apparatus; a motor located inside the housing; and a leaf pulverizing apparatus driven by the motor and configured to rotate about an axis to pulverize the leaves, wherein an area of the air inlet is greater than 260 square centimeters.

2 . The leaf cleaning device according to claim 1 , wherein the air inlet is in a shape of a rectangular opening.

3 . The leaf cleaning device according to claim 2 , wherein the air inlet comprises a length-to-width ratio in a range of greater than 0.5 and less than 2.

4 . The leaf cleaning device according to claim 1 , wherein the housing comprises a spiral housing and a first extending portion connected to the spiral housing, the first extending portion comprising a first end connected to a center of the spiral housing and a second end connected to the air inlet, and a cross-sectional area of the first end of the first extending portion is smaller than a cross-sectional area of the second end.

5 . The leaf cleaning device according to claim 4 , wherein a cross-sectional area of the first end is greater than 95 square centimeters.

6 . The leaf cleaning device according to claim 5 , wherein the first extending portion comprises a gradually increasing cross-sectional area from the first end to the second end.

7 . The leaf cleaning device according to claim 4 , wherein the leaf pulverizing apparatus is located at the center of the spiral housing, and the motor and the first extending portion are located on two opposite sides of the leaf pulverizing apparatus.

8 . The leaf cleaning device according to claim 1 , wherein a distance between the leaf pulverizing apparatus and the air inlet is less than 30 cm.

9 . The leaf cleaning device according to claim 1 , wherein the leaf pulverizing apparatus comprises a rotating disc and a flexible member disposed on the rotating disc, and a center of the rotating disc is fitted to an output shaft of the motor.

10 . The leaf cleaning device according to claim 9 , wherein the flexible member is a nylon rope.

11 . The leaf cleaning device according to claim 1 , wherein the leaf cleaning device comprises a support portion configured to be supported on the ground, and when the support portion is supported by the ground, the air inlet is close to the ground, and an angle of less than 60 degrees exists between the ground and a direction towards which the air inlet faces.

12 . The leaf cleaning device according to claim 11 , wherein the direction towards which the air inlet faces is parallel to the ground.

13 . The leaf cleaning device according to claim 11 , wherein a direction towards which the air outlet faces is parallel to the ground.

14 . The leaf cleaning device according to claim 11 , wherein the housing comprises a spiral housing, a first extending portion connected to a center of the spiral housing, and a second extending portion connected to an end of the spiral housing, wherein the first extending portion is connected to the air inlet, and the second extending portion is connected to the air outlet.

15 . The leaf cleaning device according to claim 14 , wherein the support portion is disposed on the first extending portion.

16 . The leaf cleaning device according to claim 14 , wherein the first extending portion comprises a first end connected to the center of the spiral housing and a second end connected to the air inlet, and a cross-sectional area of the first end of the first extending portion is smaller than a cross-sectional area of the second end.

17 . The leaf cleaning device according to claim 11 , wherein the leaf pulverizing apparatus comprises a rotating disc and a flexible member disposed on the rotating disc, and a center of the rotating disc is fitted to an output shaft of the motor.

18 . The leaf cleaning device according to claim 17 , wherein the flexible member is a nylon rope.

19 . The leaf cleaning device according to claim 1 , wherein the leaf cleaning device comprises a support portion configured to be supported on the ground, the air inlet comprises a normal line running through the air inlet, and when the support portion is supported by the ground, an angle of less than 60 degrees exists between the normal line and the ground.

20 . The leaf cleaning device according to claim 1 , wherein the leaf cleaning device comprises a support portion configured to be supported on the ground, the support portion defines a support plane, the air inlet defines an air intake plane configured to allow leaves to pass through, and an angle between the support plane and the air intake plane is greater than 30 degrees.

Assignees

• Positec Power Tools Suzhou Co Ltd

Inventors

• Zhang Shisong
• Qian Fu
• Xie Mingjian
• Jiao Shiping

Classifications

• A01G20/47 Primary

  Vacuum or blower devices · CPC title

• B02C18/186

  Axially elongated knives · CPC title

• A47L7/0085

  adapted for special purposes not related to cleaning · CPC title

• A47L5/22

  with rotary fans · CPC title

• E01H1/0845

  with mechanical loosening or feeding instruments for the dirt to be sucked- up, e.g. brushes, scrapers (brushing installations per se E01H1/02; other loosening devices per se E01H1/105) · CPC title