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Illustrated Sourcebook of Mechanical Components Part 5

Tham khảo tài liệu 'illustrated sourcebook of mechanical components part 5', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 9-18 8 Detents for clevis Mounting When handles are mounted in clevises they often need to be held in one or more positions by detents. Here are ways to do this. Irwin N. Schuster Hinge CAST OR MILLED clevis features an adjustable tensioning device which varies the fol-CL__s lower load. Handle can be extruded section. WELDED CLEVIS is relieved to improve spring characteristics. Punched holes receive steel rivet head which acts as the detent. CAST HANDLE is drilled to accept a commercial bullet catch which detents in the milled internal surface of the clevis flanges. Locking clamping 9-19 STAMPED SPRING snaps onto clevis before final assembly and acts as detent against the fiat end and top surfaces of metal handle. TUBE AND SHEETMETAL clevis handle has integral leaf spring which detents in cammed surface of machined shaft head. MILLED CLEVIS accepts ball-bearing fol-I lower actuated by a spring which seats w against a pivot pin in the bar and rod handle. Detent position WIRE HANDLE acts as spring and follower in sheetmetal clevis in which cammed surfaces and positive stops are made by bending. 9-20 4 Locking Fastener Designs Quick-operating fastener has internal cam action to draw up or release a 300-lb. force with only a quarter-turn of wrench. Springy all-plastic quarter-turn fastener with stylish head design can take sharp impact forces and resist .