Pool Cleaning Tool

Abstract

A pool cleaning tool includes a main frame and bristles extending therefrom, wherein the main frame has at least a locking pin hole; at least a side brush comprising a side brush frame and bristles extending therefrom, wherein the side brush frame has a through hole; a locking element comprising a head and a pin shaft connected therewith, wherein the size of the end of the pin shaft far from the head is larger than the through hole, the pin shaft is made of elastic material, such that the pin shaft can pass through the locking pin hole and the through hole to detachably connect the main brush with the at least one side brush. The present disclosure can achieve the purpose of enhancing the stability of the connection between the side brush and the main brush.

What is claimed is: 
     
         1 . A pool cleaning tool comprising:
 a main brush ( 110 ) comprising a main frame ( 111 ) and bristles extending therefrom, wherein the main frame ( 111 ) has at least a locking pin hole ( 112 );   at least a side brush ( 120 ) comprising a side brush frame ( 121 ) and bristles extending therefrom, wherein the side brush frame ( 121 ) has a through hole ( 122 );   a locking element ( 130 ) comprising a head ( 131 ) and a pin shaft ( 132 ) connected therewith,   wherein the size of the end of the pin shaft ( 132 ) far from the head ( 131 ) is larger than the through hole ( 122 ), the pin shaft ( 132 ) is made of elastic material, such that the pin shaft ( 132 ) can pass through the locking pin hole ( 112 ) and the through hole ( 122 ) to detachably connect the main brush ( 110 ) with the at least one side brush ( 120 ).   
     
     
         2 . The pool cleaning tool of  claim 1 , wherein the pin shaft ( 132 ) has at least one groove ( 134 ) at the end far from the head. 
     
     
         3 . The pool cleaning tool of  claim 2 , wherein the pin shaft ( 132 ) has two grooves ( 134 ) at the end far from the head and the two grooves ( 134 ) are positioned in a cross manner. 
     
     
         4 . The pool cleaning tool of  claim 1 , wherein each side brush frame ( 121 ) has a counterbore extending around the through hole ( 122 ) and the counterbore is the same shape as the head ( 131 ). 
     
     
         5 . The pool cleaning tool of  claim 1 , wherein the end of the pin shaft ( 132 ) far from the head is spherical or ellipsoidal. 
     
     
         6 . The pool cleaning tool of  claim 4 , wherein the shape of the counterbore and head ( 131 ) is circular. 
     
     
         7 . The pool cleaning tool of  claim 4 , wherein the shape of the counterbore and head ( 131 ) is square or rectangular. 
     
     
         8 . The pool cleaning tool of  claim 1 , wherein there are two side brushes ( 120 ) and the two side brushes ( 120 ) are detachably connected to two opposite sides of the main frame ( 111 ). 
     
     
         9 . The pool cleaning tool of  claim 1 , wherein the main frame ( 111 ) has an extending portion ( 113 ). 
     
     
         10 . The pool cleaning tool of  claim 9 , wherein there is an extending assembly adjustably attached to the extending portion ( 113 ). 
     
     
         11 . The pool cleaning tool of  claim 10 , wherein the extending assembly comprises: an extending element ( 150 ) attached to the extending portion ( 113 ), wherein the extending element ( 150 ) has a threaded structure ( 1512 ) and a hollow elastic portion ( 1513 ) far from the main brush ( 110 ); and a threaded sleeve ( 160 ) with a smaller size than the elastic portion at one end and a larger size than the elastic portion at the other end;
 wherein the threaded sleeve ( 160 ) detachably connects to the extending element ( 150 ) by the threaded structure ( 1512 ), such that the connection between the threaded sleeve ( 160 ) and the extending element ( 150 ) causes axial pressure on the elastic portion by the smaller end of the threaded sleeve ( 160 ).   
     
     
         12 . The pool cleaning tool of  claim 11 , wherein the extending element ( 150 ) comprises: two connecting elements ( 142 ), each connecting element ( 142 ) has a first tooth structure ( 1421 ) and a second tooth structure ( 1422 ), wherein the extending portion ( 113 ) has two first internal tooth structures ( 1131 ), the first internal tooth structures ( 1131 ) can be fitted with the first tooth structures ( 1421 ) respectively, wherein the extending element ( 150 ) has a second internal tooth structure ( 1511 ), the second internal tooth structure ( 1511 ) can be fitted with the second tooth structures ( 1422 ), wherein the two connecting elements ( 142 ) are configured to move between a first state and a second state, when the two connecting elements ( 142 ) are in the first state, at least one of the first internal tooth structures ( 1131 ) is engaged with one of the first tooth structures ( 1421 ), and when the two connecting elements ( 142 ) are in the second state, the first internal tooth structures ( 1131 ) are disengaged with the first tooth structures ( 1421 ) respectively. 
     
     
         13 . The pool cleaning tool of  claim 12 , wherein the extending element ( 150 ) further comprises an elastic element ( 144 ) positioned between the two connecting elements ( 142 ), wherein the elastic element ( 144 ) is configured to drive the two connecting elements ( 142 ) from the second state to the first state. 
     
     
         14 . The pool cleaning tool of  claim 13 , wherein the extending element ( 150 ) further comprises two buttons ( 143 ) connected to the connecting elements ( 142 ) respectively. 
     
     
         15 . The pool cleaning tool of  claim 14 , wherein the two connecting elements ( 142 ) are positioned coaxially and symmetrically with respect to each other. 
     
     
         16 . The pool cleaning tool of  claim 15 , wherein the connecting elements ( 142 ), the elastic element ( 144 ), and the second internal tooth structure ( 1511 ) are positioned between the two first internal tooth structures ( 1131 ). 
     
     
         17 . The pool cleaning tool of  claim 16 , wherein the second tooth structures ( 1422 ) have a larger outside diameter than the first tooth structures ( 1421 ), and the second tooth structures ( 1422 ) are closer to the plane of symmetry of the two connecting elements ( 142 ) than the first tooth structures ( 1421 ). 
     
     
         18 . The pool cleaning tool of  claim 17 , wherein the two buttons ( 143 ) protrude above the first internal tooth structures ( 1131 ) from two opposite directions. 
     
     
         19 . The pool cleaning tool of  claim 18 , wherein each of the connecting elements ( 142 ) has a threaded through hole ( 1423 ), each of the buttons ( 143 ) has a threaded portion ( 1431 ), and the threaded portions ( 1431 ) fit into the threaded through holes ( 1423 ) respectively. 
     
     
         20 . The pool cleaning tool of  claim 19 , wherein two ends of the elastic element ( 144 ) are connected to the two threaded portions ( 1431 ) respectively.