Hydraulic sealing body for bicycle braking systems and hydraulic hose assembly for bicycle braking systems

Abstract

The disclosure relates to a hydraulic sealing body comprising a radially inner surface defining a through-cavity and an annular element projecting in a radially inner direction from said radially inner surface, the annular element comprising a first annular abutment surface configured to receive in contact relationship a head portion of a coupling terminal and a second annular abutment surface, axially opposite to the first, configured to receive in contact relationship an axial end of a hydraulic hose.

What is claimed is: 
     
         1 . A hydraulic sealing body for bicycle hydraulic braking systems, the hydraulic sealing body comprising a radially inner surface defining a through-cavity and an annular element projecting in a radially inner direction from said radially inner surface, said annular element comprising a first annular abutment surface configured to receive in a contact relationship a head portion of a coupling terminal and a second annular abutment surface, axially opposite to the first annular abutment surface, configured to receive in contact relationship an axial end of a hydraulic hose. 
     
     
         2 . The hydraulic sealing body according to  claim 1 , wherein said radially inner surface defines a first opening for the insertion of the head portion of the coupling terminal and a second opening for the insertion of the axial end of the hydraulic hose. 
     
     
         3 . The hydraulic sealing body according to  claim 2 , comprising a perimeter wall defined between said radially inner surface and a radially outer surface; said perimeter wall having a thickness at the annular element that is greater than the thickness at the first opening and the second opening. 
     
     
         4 . The hydraulic sealing body according to  claim 2 , wherein said annular element is arranged in an intermediate axial position between the first opening and the second opening. 
     
     
         5 . The hydraulic sealing body according to  claim 1 , wherein said annular element is made in one piece with said radially inner surface. 
     
     
         6 . The hydraulic sealing body according to  claim 1 , wherein said annular element is an insert that is inserted in said through-cavity. 
     
     
         7 . The hydraulic sealing body according to  claim 6 , wherein said annular element is made of elastomeric material. 
     
     
         8 . The hydraulic sealing body according to  claim 6 , further comprising, on said radially inner surface, an annular groove that engages an annular projection from said annular element. 
     
     
         9 . A hydraulic hose assembly for bicycle hydraulic braking systems comprising:
 a hydraulic hose comprising an axial end;   a coupling terminal comprising an insertion portion that is inserted in said axial end of the hydraulic hose and a head portion that is arranged at an end of the insertion portion and projects in a radially outer direction from said insertion portion; and   a hydraulic sealing body according to  claim 1 , wherein said annular element of the hydraulic sealing body comprises a first annular abutment surface in contact with said head portion of the coupling terminal and a second annular abutment surface, axially opposite to the first annular abutment surface, in contact with said axial end of the hydraulic hose.   
     
     
         10 . The hydraulic hose assembly according to  claim 9 , wherein said head portion of the coupling terminal comprises, at an axial end facing towards said insertion portion, an annular abutment surface in contact with said first abutment surface of the annular element of the hydraulic sealing body. 
     
     
         11 . The hydraulic hose assembly according to  claim 9 , wherein said annular element of the hydraulic sealing body has a central opening with a diameter in the radial direction that is smaller than the diameter of the head portion and greater than the diameter in the radial direction of the insertion portion. 
     
     
         12 . The hydraulic hose assembly according to  claim 9 , wherein said head portion of the coupling terminal has a connection surface that is arranged at an axial end opposite to the insertion portion and is axially outside the hydraulic sealing body. 
     
     
         13 . The hydraulic hose assembly according to  claim 9 , further comprising a clamping screw that is slidable along said hydraulic hose and configured to contact and crimp said hydraulic sealing body. 
     
     
         14 . A kit for connecting a hydraulic hose to a bicycle component, the kit comprising:
 a coupling terminal comprising an insertion portion insertable in a hydraulic hose and a head portion arranged at an axial end of the insertion portion and projecting in a radially outer direction from said insertion portion;   a hydraulic sealing body comprising a radially inner surface defining a through-cavity and an annular element projecting in a radially inner direction from said radially inner surface; said annular element of the hydraulic sealing body comprising a first annular abutment surface configured to contact said head portion of the coupling terminal and a second annular abutment surface, axially opposite to the first annular abutment surface, configured to contact said axial end of the hydraulic hose; and,   a clamping screw configured to contact said hydraulic sealing body.   
     
     
         15 . A method for assembling a hydraulic hose assembly comprising:
 providing a hydraulic sealing body having a through-cavity in which an annular element is arranged projecting in a radially inner direction comprising a first annular abutment surface, a second annular abutment surface axially opposite to the first annular abutment surface and a central hole;   providing a coupling terminal having a head portion and an insertion portion;   providing a hydraulic hose having an axial end;   inserting the coupling terminal in the through-cavity of the hydraulic sealing body so that the insertion portion passes through the central hole; and,   inserting the insertion portion of the coupling terminal in the axial end of the hydraulic hose so that the head portion of the coupling terminal contacts the first annular abutment surface of the hydraulic sealing body and the axial end of the hydraulic hose contacts the second annular abutment surface of the hydraulic sealing body.