Handheld blower

Abstract

A handheld blower includes a housing having an air inlet and a duct assembly mounted in front of the air inlet, the duct assembly including a duct connected with the housing, a motor and a fan mounted in the duct, a battery, and a blowpipe connected to the housing by the duct assembly, the blowpipe defining a central axis in the length direction, and a handle arranged above the housing and the battery. The handle includes a gripping portion arranged on opposite sides of a plane in which the gravity center of the blower is located, and the plane is parallel to a central axis of the blowpipe and substantially perpendicular to a working ground. The gravity center of the handheld blower is adjacent to the gripping portion which enhances the handling comfort and reduces operator fatigue during long times of operation.

What is claimed is: 
     
         1 . A blower, comprising:
 a motor;   an air duct portion comprising an air duct extending along a central axis;   a battery pack for supplying power to the motor;   a battery coupling portion for coupling with the battery pack;   a connection portion located between the air duct portion and the battery coupling portion and comprising a handle used to handle the blower, the connection portion configured to couple the air duct portion to the battery coupling portion;   wherein the air duct comprises an air duct inlet and an air duct outlet which are respectively located at opposite ends of the air duct, the air duct inlet is located between the air duct outlet and the coupling portion;   wherein the connection portion comprises a connecting housing defining an inner air intake space located between the air duct inlet and the battery coupling portion, the connecting housing includes a side cover with at least one side air inlet for permitting an outer air flow to be induced from the side air inlet into the air duct inlet of the air duct and further to the air duct outlet of the air duct portion.   
     
     
         2 . The blower according to  claim 1 , wherein the battery coupling portion has a battery interface defining a battery plane, the central axis of the air duct configured to intersect with the plane of the battery coupling portion. 
     
     
         3 . The blower according to  claim 1 , wherein the blower includes a fan separate from the motor, the fan is driven by the motor to rotate about a motor axis. 
     
     
         4 . The blower according to  claim 1 , wherein the blower includes a supporting ring arranged in the air duct, the supporting ring including an accommodating portion configured for accommodating the motor. 
     
     
         5 . The handheld blower according to  claim 4 , wherein the blower includes a fan, and the accommodating portion is in front of a hub of the fan. 
     
     
         6 . A blower, comprising:
 a motor;   an air duct portion comprising an air duct, the air duct extending along a central axis;   a battery coupling portion for coupling with a battery pack, the battery pack being capable of supplying power to the motor;   a connection portion located between the air duct portion and the coupling portion and comprising a handle used to handle the blower, the connection portion configured to couple the air duct portion to the battery coupling portion; and   wherein the air duct comprises an air duct inlet and an air duct outlet which are respectively located at two ends of the air duct, the air duct inlet is located between the air duct outlet and the coupling portion;   wherein the connection portion defines an air intake space located between the air duct inlet and the coupling portion, the connection portion includes at least one side air passage for permitting an outer air flow to be induced from the at least one side air passage into the air duct inlet of the air duct and further to the air duct outlet of the air duct portion.   
     
     
         7 . The handheld blower according to  claim 6 , wherein the battery coupling portion has a battery interface defining a battery plane, the central axis of the air duct configured to intersect with the plane of the battery coupling portion. 
     
     
         8 . The handheld blower according to  claim 6 , wherein the blower includes a fan separate from the motor, the fan is driven by the motor to rotate about a motor axis. 
     
     
         9 . The handheld blower according to  claim 6 , wherein the blower includes a supporting ring arranged in the air duct, the supporting ring including an accommodating portion configured for accommodating the motor. 
     
     
         10 . The handheld blower according to  claim 9 , wherein the blower includes a fan, and the accommodating portion is in front of a hub of the fan. 
     
     
         11 . The handheld blower according to  claim 6 , further comprising the battery pack coupled to the battery coupling portion. 
     
     
         12 . A blower, comprising:
 a motor;   an air duct portion forming an air duct, the air duct extending along a central axis; and   a battery coupling portion for coupling with a battery pack, the battery pack being capable of supplying power to the motor;   a connection assembly located between the air duct portion and the coupling portion and comprising a handle used to handle the blower, the connection assembly configured to couple the air duct portion to the battery coupling portion; and   wherein the air duct comprises an air duct inlet and an air duct outlet which are respectively located at two ends of the air duct, the air duct inlet is located between the air duct outlet and the battery coupling portion;   wherein the connection assembly comprises a connecting housing defining an inner air intake space located between the air duct inlet and the coupling portion, the connecting housing includes a side cover with at least one side air inlet for permitting an outer air flow to be induced from the side air inlet into the air duct inlet of the air duct and further to the air duct outlet of the air duct portion.   
     
     
         13 . The handheld blower according to  claim 12 , further comprising a battery pack coupled to the battery coupling portion. 
     
     
         14 . The handheld blower according to  claim 12 , wherein the battery coupling portion has a battery interface defining a battery plane, the central axis of the air duct configured to intersect with the plane of the battery coupling portion. 
     
     
         15 . The handheld blower according to  claim 12 , wherein the blower includes a fan separate from the motor, the fan is driven by the motor to rotate about a motor axis. 
     
     
         16 . The handheld blower according to  claim 12 , wherein the blower includes a supporting ring arranged in the air duct, the supporting ring including an accommodating portion configured for accommodating the motor. 
     
     
         17 . The handheld blower according to  claim 16 , wherein the blower includes a fan, the accommodating portion is in front of a hub of the fan. 
     
     
         18 . The handheld blower according to  claim 16 , wherein the connection assembly comprises a connection portion configured to couple the air duct portion to the battery coupling portion.