Motorcycle clutch type
(1) The wet multi-plate friction clutch clutch assembly is immersed in the oil to be divided into three parts: active, driven and separated. The power of the engine is driven by a sprocket-type gear drive, and the periphery of the cover is grooved. Five friction plates (active sheets) with rubber cork friction material are embedded, and the outer edge of the bump is placed in the groove of the active cover. Rotate as one of the active parts of the clutch. The four steel driven pieces are connected to the driven piece fixing basin by internal teeth to form a driven portion. The main and driven pieces are staggered, and the fixed basin is connected to the gearbox main shaft by internal splines. The four clutch springs on the gland press the friction plate and the driven piece to transmit the power to the gearbox. The clutch is normally engaged. When the clutch lever is tightened by the cable to rotate the screw sleeve in the left cover, the adjusting screw in the screw sleeve moves to the right, pushing the separation push rod and the gland, the spring pressure disappears, the friction sign and the follower piece Separation.
(2) Automatic centrifugal clutch This structure is used on mopeds such as Yamaha CY80 and Suzuki FR50 to automatically control the separation and engagement of the clutch according to the engine speed. The clutch consists of an active, driven and disengaged engagement mechanism. The active part is composed of a clutch cover, a thrust piece, a clutch plate and the like. The driven part is composed of a friction plate, a center sleeve and the like. When the engine is running, the centrifugal force generated by the steel ball increases with the increase of the rotational speed, and the axial component force overcomes the tension of the separation spring to move outward along the groove in the clutch cover, and the compression thrust piece is tightly pressed. Pressing the clutch plate and friction causes the clutch to be engaged and the power is output. When the engine speed is reduced to 怠 or flameout, the centrifugal force of the steel ball is reduced or not, and the tension of the separation spring overcomes the centrifugal force of the steel ball to cause the steel ball to return to the original position along the groove, and the clutch is separated.
(3) Hoof block type automatic clutch This structure is used in some miniature motorcycles. The active part is a fixed seat driven by the crankshaft. There are three shoe block assemblies on the seat, and the pin shaft is connected to the fixed seat. The block is pulled toward the center of the crankshaft to maintain a certain gap between the shoe of the shoe assembly and the clutch disk of the driven portion. When the rotation speed is increased, when the centrifugal force generated by the shoe block is greater than the tension force of the spring, it is opened outward. When the centrifugal force reaches a certain value, it is engaged with the clutch disc, and friction is generated to drive the driven portion to rotate and transmit power.