Guide Assembly for a Disc Brake

Abstract

A guide assembly for a disc brake, the guide assembly comprising a bore disposed in a disc brake caliper for receiving a guide pin. The bore comprises a first bore portion with a substantially circular cross-sectional profile and a second bore portion with a substantially circular cross-sectional profile arranged sequentially along the length of the bore and tangentially offset such that the bore is defined by the overlap of the first bore portion and second bore portion and has a lens-shaped cross-sectional profile.

1 - 15 . (canceled) 
     
     
         16 . A guide assembly for a disc brake, the guide assembly comprising:
 a disc brake caliper having a bore for receiving a guide pin, wherein the bore has a substantially circular cross-sectional profile; and   a guide bush member mounted in the bore, the guide bush member being a strip of metal formed into a tube having a substantially circular cross-sectional profile, and including first and second thinned strip regions arranged on opposing sides of an inner face of the guide bush member.   
     
     
         17 . The guide assembly of  claim 16  wherein the first and second thinned strip regions are spaced apart from each other. 
     
     
         18 . The guide assembly of  claim 16  wherein the first and second thinned strip regions are predetermined locations of the strip that have been broached or machined to be thinner with respect to a remainder of the strip. 
     
     
         19 . The guide assembly of  claim 16  wherein the first and second thinned strip regions are arranged in a circumferential direction. 
     
     
         20 . The guide assembly of  claim 16  wherein the guide bush member includes third and fourth sliding strip regions on opposing sides of the inner face of the guide bush member, wherein the third and fourth sliding strip regions extend radially inward further than the first and second thinned strip regions. 
     
     
         21 . The guide assembly of  claim 20  wherein the third and fourth sliding strip regions are arranged in a tangential direction. 
     
     
         22 . The guide assembly of  claim 20  wherein the third and fourth sliding strip regions separate the first and second thinned strip regions from each other. 
     
     
         23 . The guide assembly of  claim 20  wherein the third and fourth sliding strip regions have recesses. 
     
     
         24 . The guide assembly of  claim 23  wherein the recesses are disposed between and spaced apart from the first and second thinned strip regions and extend radially outward from an inside surface of the guide bush member toward an outside circumference of the guide bush member. 
     
     
         25 . A disc brake comprising:
 a disc brake caliper having a bore, wherein the bore has a substantially circular cross-sectional profile;   a guide bush member mounted in the bore, the guide bush member being a strip of metal formed into a tube having a substantially circular cross-sectional profile, and including first and second thinned strip regions arranged on opposing sides of an inner face of the guide bush member; and   a disc brake carrier that has a guide pin arranged to be received in the guide bush member.   
     
     
         26 . A method of forming a guide bush member for receiving a guide pin of a disc brake, the method comprising:
 providing a strip of metal;   broaching or machining two portions of the strip so as to thin the two portions with respect to a remainder of the strip; and   forming the strip into a tube with a substantially circular cross-sectional profile such that the two portions are located on opposing inner faces of the tube.   
     
     
         27 . The method of  claim 26  further comprising inserting the guide bush member into a bore disposed in a disc brake caliper of the disc brake, wherein the bore has a substantially circular cross-sectional profile. 
     
     
         28 . The method of  claim 27  wherein inserting of the guide bush member includes inserting the guide bush member into the bore such that the two portions are arranged in a circumferential direction.