Band braking device, and method of manufacturing annular brake band

Abstract

A band braking device has an annular brake band having a frictional surface formed on the inner peripheral side thereof and a bracket fixed to an end portion thereof. Concave portions are formed on one of the bracket and the brake band, and convex portions are formed on the other to be engaged with the concave portions.

What is claims is:  
     
         1 . A band braking device having an annular brake band which has a frictional surface formed on the inner peripheral side thereof and a bracket fixed to an end portion thereof, characterized in that: 
 concave or recessed portions are formed on one of said bracket and said brake band, and convex or projected portions are formed on the other to be engaged with said concave or recessed portions.    
     
     
         2 . A band braking device according to    claim 1   , wherein said bracket and said brake band are fixed to each other by brazing.  
     
     
         3 . A band braking device according to    claim 1   , wherein said concave or recessed portions are formed on said bracket while said convex or projected portions are formed on said brake band.  
     
     
         4 . A band braking device according to    claim 1   , wherein said concave or recessed portions and said convex or projected portions are formed in elongated shapes extending in the circumferential direction of said brake band.  
     
     
         5 . A band braking device according to    claim 1   , wherein said brake band is a double-wound brake band comprising an intermediate band and an outer band.  
     
     
         6 . A method of manufacturing an annular brake band which has a frictional surface formed on the inner peripheral side thereof and a bracket fixed to an end portion thereof, comprising the steps of: 
 forming concave or recessed portions on either one of said bracket and said brake band, and convex or projected portions on the other to be engaged with said concave or recessed portions; and    bringing said concave or recessed portions into engagement with said convex or projected portions so as to join said bracket and said brake band together by brazing.    
     
     
         7 . A band braking device having an annular brake band which has a frictional surface formed on the inner peripheral side thereof and a bracket fixed to an end portion on the outer peripheral side thereof, characterized in that: 
 said bracket and said brake band are bonded together by an adhesive.    
     
     
         8 . A band braking device according to    claim 7   , wherein at least one of the bonded surfaces of said bracket and said brake band was subjected to a primer treatment.  
     
     
         9 . A band braking device according to    claim 7    or    8   , wherein said bracket and said brake band are fixed to each other by caulking.  
     
     
         10 . A band braking device according to    claim 7   , wherein said bracket and said brake band are bonded together by spot welding.  
     
     
         11 . A band braking device according to    claim 7   , wherein the concave or recessed portions are formed on either one of said bracket and said brake band while the convex or projected portions are formed on the other to be engaged with said concave or recessed portions.  
     
     
         12 . A method of manufacturing an annular brake band which has a frictional member formed on the inner peripheral side thereof and a bracket fixed to an end portion on the outer peripheral side thereof, comprising the step of: 
 interposing a thermosetting adhesive between said frictional member and said bracket; and thereafter thermally bonding said frictional member and said bracket at the same time to said brake band.