Twisted brush, method for producing a twisted brush, and apparatus for producing a twisted brush

Abstract

A twisted brush (1) having a bristle carrier (2) made of twisted together wire portions (3) which have oval and/or elliptical cross sections, at least in the distal portion (4) of the bristle carrier (2). Further, a twisted brush (1) whose bristle carrier (2) has an extraction protection (12) at a distance from its proximal end (11) is also provided. Using this extraction protection (12), the bristle carrier (2) can be fastened to the handle (7) of the twisted brush (1) in a manner protected against extraction. Moreover, a method for producing a twisted brush is also provided, wire portions (3), of which at least one is profiled, i.e. has at least two regions (4a, 6a, 13a) with different cross sections, are twisted together to form the bristle carrier (2). Further a brush production machine (20) having a wire-forming device (19), by which, in at least one region (4a, 6a, 13a) of a wire portion (3) to be profiled, a cross section of the wire portion (3) can be modified such that the wire portion (3) after profiling has at least two regions (4a, 6a, 13a) with differently formed cross sections.

1 . A twisted brush ( 1 ), comprising a bristle carrier ( 2 ) made of at least two twisted together wire portions ( 3 ), a set of bristles ( 5 ) provided at a distal portion ( 4 ) of the bristle carrier ( 2 ), at least one of the wire portions ( 3 ) of the at least two wire portions ( 3 ) has at least two regions ( 4   a ,  6   a ,  13   a ) with different cross sections. 
     
     
         2 . A twisted brush ( 1 ), comprising a bristle carrier ( 2 ) made of at least two twisted together wire portions ( 3 ), a set of bristles ( 5 ) provided at a distal portion ( 4 ) of the bristle carrier ( 2 ), and the at least two wire portions ( 3 ) have at least one of oval or elliptical cross sections, at least in regions ( 4   a ) which form the distal portion ( 4 ) of the bristle carrier ( 2 ). 
     
     
         3 . A twisted brush ( 1 ), comprising a bristle carrier ( 2 ) made of at least two twisted together wire portions ( 3 ), a set of bristles ( 5 ) provided at a distal portion ( 4 ) of the bristle carrier ( 2 ), the bristle carrier ( 2 ) has an extraction protection ( 12 ) at a distance from a proximal end ( 11 ) thereof, the bristle carrier ( 2 ) being securable to a handle ( 7 ), which is arrangeable or arranged at a proximal portion ( 6 ) of the bristle carrier ( 2 ), by said extraction protection. 
     
     
         4 . The brush ( 1 ) as claimed in  claim 3 , wherein at least one of the wire portions ( 3 ) has at least two regions ( 4   a ,  6   a ,  13   a ) with differently shaped cross sections, the extraction protection ( 12 ) is formed by a change in cross section of the bristle carrier ( 2 ) along a direction of longitudinal extent thereof that results from the different cross sections of the at least one wire portion ( 3 ). 
     
     
         5 . The brush ( 1 ) as claimed in  claim 3 , wherein the bristle carrier ( 2 ) has an intermediate portion ( 13 ) between the distal portion ( 4 ) and the proximal portion ( 6 ), a proximal shoulder ( 14 ) is formed between the intermediate portion ( 13 ) and the proximal portion ( 6 ) as the extraction protection ( 12 ), and the handle ( 7 ) is connectable to the bristle carrier ( 2 ) in interlocking fashion by said shoulder and being connected to said bristle carrier in a use position. 
     
     
         6 . The brush ( 1 ) as claimed in  claim 5 , wherein, for producing the extraction protection ( 12 ), the bristle carrier ( 2 ) has in the intermediate portion ( 13 ) an external dimension that is measurable in a spatial direction oriented transversely to the direction of longitudinal extent of the bristle carrier ( 2 ) and that is smaller than an external dimension, measured in a same spatial direction, of the bristle carrier ( 2 ) in the adjacent proximal portion ( 6 ). 
     
     
         7 . The brush ( 1 ) as claimed in  claim 6 , wherein the bristle carrier ( 2 ) has a distal shoulder ( 15 ) between the intermediate portion ( 13 ) and the distal portion ( 4 ), and for producing the distal shoulder ( 15 ) between the intermediate portion ( 13 ) and the distal portion ( 4 ), an external dimension, measurable in a spatial direction oriented transversely to the direction of longitudinal extent of the bristle carrier ( 2 ), of the bristle carrier ( 2 ) in the intermediate portion ( 13 ) is smaller than or larger than an external dimension, measured in the same spatial direction, of the bristle carrier ( 2 ) in the distal portion ( 4 ). 
     
     
         8 . The brush ( 1 ) as claimed in  claim 5 , wherein regions ( 6   a ) of the wire portions ( 3 ) which form the proximal portion ( 6 ) of the bristle carrier ( 2 ) have at least one of circular, elliptical, oval, or half-round cross sections. 
     
     
         9 . The brush ( 1 ) as claimed in  claim 5 , wherein regions ( 13   a ) of the wire portions ( 3 ) which form the intermediate portion ( 13 ) of the bristle carrier ( 2 ) have semicircular cross sections, and there are two of the wire portions ( 3 ) that are twisted together to form the intermediate portion ( 13 ) that face one another with flat sides of said respective semicircular cross section. 
     
     
         10 . The brush ( 1 ) as claimed in  claim 5 , wherein regions ( 4   a ) of the wire portions ( 3 ) which form the distal portion ( 4 ) of the bristle carrier ( 2 ) have at least one of oval or elliptical cross sections, and there are two of the wire portions ( 3 ) that are twisted together in the distal portion ( 4 ) of the bristle carrier ( 2 ) that face one another with in each case a co-vertices of their at least one of said oval or elliptical cross sections. 
     
     
         11 . The brush ( 1 ) as claimed in  claim 3 , further comprising a handle ( 7 ) fastened to the bristle carrier ( 2 ) such that said handle at least partly encloses the proximal portion ( 6 ) and the extraction protection ( 12 ) of the bristle carrier ( 2 ). 
     
     
         12 . The brush ( 1 ) as claimed  claim 1 , wherein the wire portions ( 3 ) are two interconnected limbs of a wire piece ( 17 ) that is bent along a bending line ( 16 ), and the bending line ( 16 ) is at least one of a distal end ( 18 ) of the bristle carrier ( 2 ) or arranged in the middle of the wire piece ( 17 ). 
     
     
         13 . The brush ( 1 ) as claimed in  claim 1 , wherein the at least two wire portions ( 3 ) are twisted together over a partial region of respective lengths thereof or the at least two wire portions ( 3 ) are twisted together over entire lengths thereof. 
     
     
         14 . The brush ( 1 ) as claimed in  claim 1 , wherein at least two of the wire portions ( 3 ) have identical profiles. 
     
     
         15 . The brush ( 1 ) as claimed in  claim 1 , wherein at least one of the wire portions ( 3 ) of the at least two wire portions ( 3 ) tapers in a direction of a distal end thereof, such that the at least one wire portion ( 3 ) is conical, conical-frustum-shaped, pyramid-shaped, or pyramidal-frustum-shaped. 
     
     
         16 . The brush ( 1 ) as claimed in  claim 1 , wherein the different cross sections of the at least two regions ( 4   a ,  6   a ,  13   a ) have a same cross-sectional form, but have differently sized cross-sectional areas. 
     
     
         17 . The brush ( 1 ) as claimed in  claim 1 , wherein the wire portions ( 3 ) have cross sections that deviate format least one of an oval or elliptical cross-sectional form, at least in regions ( 4   a ) which form the distal portion ( 4 ) of the bristle carrier ( 2 ). 
     
     
         18 . A method for producing a twisted brush ( 1 ), comprising providing at least two wire portions ( 3 ) with at least one of said wire portions being a profiled wire portion ( 3 ) having at least two regions ( 4   a ,  6   a ,  13   a ) with differently formed cross sections, and twisting said at least two wire portions ( 3 ) together to form a bristle carrier ( 2 ). 
     
     
         19 . The method as claimed in  claim 18 , wherein at least two of the wire portions ( 3 ) are profiled before twisting for producing the bristle carrier ( 2 ), such that said at least two of the wire portions respectively have the at least two regions ( 4   a ,  6   a ,  13   a ) with differently formed cross sections, and the at least two regions ( 4   a ,  6   a ,  13   a ) of the profiled wire portions ( 3 ) that respectively have the same cross section are twisted together. 
     
     
         20 . The method as claimed in  claim 18 , wherein the wire portions ( 3 ) are connected to one another to form a wire piece ( 17 ), the method further comprising bending the wire piece ( 17 ) along a bending line ( 16 ) after profiling the wire portions ( 3 ) in order to bring the wire portions ( 3 ) into a relative position, required for twisting, with respect to one another. 
     
     
         21 . The method as claimed in  claim 20 , wherein the wire portions ( 3 ) are provided from at least one of a wire-forming device ( 19 ) or a wire-aligning device ( 22 ), with at least one of a circular cross section in respectively one said region ( 4   a ,  6   a ,  13   a ), an oval cross section in respectively one said region ( 4   a ,  6   a ,  13   a ), with an elliptical cross section in respectively one said region ( 4   a ,  6   a ,  13   a ), or with a semicircular cross section in respectively one said region ( 4   a ,  6   a ,  13   a ). 
     
     
         22 . A brush production machine ( 20 ) for producing twisted brushes ( 1 ), the brush production machine ( 20 ) comprising a wire-forming device ( 19 ) adapted to modify, in at least one region ( 4   a ,  6   a ,  13   a ) of a wire portion ( 3 ) to be profiled, a cross section of the wire portion ( 3 ) to be profiled such that the wire portion ( 3 ) after profiling has at least two regions ( 4   a ,  6   a ,  13   a ) with differently formed cross sections. 
     
     
         23 . The brush production machine ( 20 ) as claimed in  claim 22 , further comprising at least one of a wire alignment device ( 22 ) disposed upstream of the wire-forming device ( 19 ) in a wire transportation direction or a wire cutting apparatus ( 27 ). 
     
     
         24 . The brush production machine ( 20 ) as claimed in  claim 23 , wherein the brush production machine ( 20 ) is configured to provide at least two of said wire portions ( 3 ) with at least one of said wire portions being a profiled wire portion ( 3 ) having the at least two regions ( 4   a ,  6   a ,  13   a ) with differently formed cross sections, and to twist said at least two wire portions ( 3 ) together to form a bristle carrier ( 2 ).