Brush device with quick couplings for cleaning elements

Abstract

A brush device with quick couplings for cleaning elements (5) includes: first (15) and second (17) retaining elements that define respective cavities shaped approximately complementary to first (21) and second (23) matching members. The second the retaining element (17) has a tooth (27) delimiting the corresponding cavity, cantilevered onto a flexible arm (29) connecting it to a respective end of a first connection element (7) or of a second connection element (11). The flexible arm (29) has a driving extension (33) for manual actuation thereof to free the matching member (21, 23) from the tooth (27) allowing for the detachment of at least the second connection element (11) and of the cleaning element (5).

1 . Brush device with quick couplings for cleaning elements ( 5 ) comprising at least one rotation shaft that can be operated by respective motor elements, a set of support members ( 3 ) obtained in or fixed to the rotation shaft with each support member assigned to connect a respective plurality of cleaning elements ( 5 ) to said shaft; said device ( 1 ) further comprising a plurality of first connection elements ( 7 ), each connection element assigned for fixation to a respective support member ( 3 ) and provided with a housing ( 9 ) assigned to house a portion of at least one cleaning element ( 5 ) and with a respective second connection element ( 11 ) assigned to reversibly fix, by blocking and unblocking, said at least one cleaning element ( 5 ); said device ( 1 ) also comprising a first retaining element ( 15 ) and a second retaining element ( 17 ) that are placed at, or obtained in, respective ends of the first connection element ( 7 ) and assigned to house, by reversibly blocking a matching first member ( 21 ) and a matching second member ( 23 ) placed at respective ends of the second connection element ( 11 ), or said first retaining element ( 15 ) and said second retaining element ( 17 ) are placed or carried out in the respective ends of the second connection element ( 11 ) and are assigned to house, by reversibly blocking the first matching member ( 21 ) and the second matching member ( 23 ) that are placed or obtained in the respective ends of the respective support member ( 3 ); wherein the first retaining element ( 15 ) and the second retaining element ( 17 ) define respective cavities with a shape substantially complementary to that of the first matching member ( 21 ) and the second matching member ( 23 ) and wherein at least the second retaining element ( 17 ) has a tooth ( 27 ) delimiting the corresponding cavity that is cantilever fixed onto a flexible arm ( 29 ) that connects it to the respective end of the first connection element ( 7 ) or of the second connection element ( 11 ); said flexible arm ( 29 ) is provided with a driving extension ( 33 ) fit for manual actuation of the flexible arm ( 29 ) to free the matching member ( 21 ,  23 ) from the tooth ( 27 ) allowing for detachment of at least the second connection element ( 11 ) and of the cleaning element ( 5 ). 
     
     
         2 . The device according to  claim 1 , wherein one face of the tooth ( 27 ) opposite the corresponding cavity is provided with an inclined surface to facilitate pressure insertion and a joint block of the connection element ( 11 ) and of the cleaning element ( 5 ) to the first connection element ( 7 ) or to the respective support member ( 3 ). 
     
     
         3 . The device according to  claim 1 , wherein the portion of the cleaning element ( 5 ) assigned for blocking between the first ( 7 ) and second ( 11 ) connection elements has an elongated rectangular cross section and wherein a main dimension of the housing ( 9 ) has length equal to or greater than a largest dimension of said elongated rectangular cross section. 
     
     
         4 . The device according to  claim 1 , wherein the first matching member ( 21 ) and the second matching member ( 23 ) are of approximately equal shape and size and/or wherein the cavities of the first retaining element ( 15 ) and the second retaining element of the first connection element ( 7 ) are of substantially equal shape and size or the shape of one of the first matching member ( 21 ) and the second matching member ( 23 ) of the second connection element ( 11 ) is compatible with a shape and size of only one of the cavities of the first retaining element ( 15 ) and the second retaining element ( 17 ) to allow for connection in one direction only. 
     
     
         5 . The device according to  claim 1 , wherein the first matching member ( 21 ) and the cavity of the first retaining element ( 15 ) are approximately cylindrical in shape or are approximately rectangular or prismatic in shape and/or wherein the second matching member ( 23 ) and the cavity of the second retaining element ( 17 ) have approximately rectangular or prismatic shape. 
     
     
         6 . The device according to  claim 1 , wherein the second connection element ( 11 ) is fixable by removable joint to the first connection element ( 7 ), said second connection element ( 11 ) is irremovably fixed to a face of said portion of the at least one cleaning element ( 5 ) opposite to the first connection element ( 7 ) by gluing, by fusion of pins protruding from the second connection element ( 11 ) and engaged in respective holes of said portion of the at least one cleaning element ( 5 ), by means of seams, ties, stitches, clips, expansion elements, screws or fasteners. 
     
     
         7 . The device according to  claim 6 , further comprising a reinforcement element ( 37 ) fixable to the second connection element ( 11 ) to block therebetween said portion of the at least one cleaning element ( 5 ), where the housing ( 9 ) and the cavities of the first ( 15 ) and second ( 17 ) retaining elements of the first connection element ( 7 ) are dimensioned to house the reinforcement element ( 37 ) and the second connection element ( 11 ) with said portion of the cleaning element ( 5 ) interposed between said second connection element ( 11 ) and said reinforcement element ( 37 ). 
     
     
         8 . The device according to  claim 7 , wherein faces of the reinforcement element ( 37 ) and of the first connection element ( 7 ) which face each other in a fastening condition have respective complementary projections and protrusions fit for at least one of: preventing incorrect coupling of the cleaning elements ( 5 ) with support members ( 3 ) or shafts, and preventing, in the fastening condition, sliding of the reinforcement element ( 37 ) with respect to the first connection element ( 7 ) to avoid unwanted detachment of the at least one cleaning element ( 5 ). 
     
     
         9 . The device according to  claim 1 , wherein each first connection element ( 7 ) is fixed to the respective support member ( 3 ) by fusion of pins protruding from the first connection element ( 7 ) and engaged in respective holes of the support member ( 3 ) itself or by means of gluing, stitches, clips, expansion elements, screws, seams, bonds or fastenings; where the support member ( 3 ) is equipped with a plurality of concave seats ( 41 ) open in a direction opposite to the shaft, each one being delimited by a respective perimeter wall ( 43 ) protruding perpendicularly from the support member ( 3 ), in which each first connection element ( 7 ) is fixed inside a respective concave seat ( 41 ). 
     
     
         10 . The device according to  claim 1 , wherein the second connection element ( 11 ) is fixable by removable joint to the respective support member ( 3 ), said second connection element ( 11 ) is irremovably fixed to the first connection element ( 7 ), with interposition and fixing of said portion of the at least one cleaning element ( 5 ), by fusion of pins ( 12 ) protruding from the second connection element ( 11 ) and engaged in respective holes ( 14 ) of the first connection element ( 7 ), or by means of seams, ties, stitches, clips, expansion elements, screws or fasteners.