COUPLING DEVICE FOR FOUR-WHEEL DRIVE

• Main Author: HAGA KYOSUKE
• Format: Patent
• Language: English
• Published: 31.01.1992
• Subjects: ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES; ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; BLASTING; BRAKES; CLUTCHES; COUPLINGS FOR TRANSMITTING ROTATION; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; THERMAL INSULATION IN GENERAL; TRANSPORTING; VEHICLES IN GENERAL; WEAPONS

PURPOSE:To change torque transmission characteristics with a simple mechanism by providing first and second blades, and first and second clutch parts to one side of input rotating and output rotating members, so that they can be selectively combined. CONSTITUTION:A coupling device comprising an input rotating member 11, an output rotating member 12, pistons 15, 16 which are operated by two pairs of pressure-producing parts respectively, and a sliding clutch 17. Blades 35 and 36 are housed in two spaces filled with a high-viscosity fluid to constitute a pressure-producing part. In the inside of a clutch case 41 on the input rotating member 11 side, a pair of clutch plates 44, 45 is provided, which are connected to first and second rotary sleeves 21, 22 respectively to constitute first and second clutch parts A and B. By operating a control lever 47 for changing over the clutch parts A, B, pressure is produced by means of the first and second blades for operating the pistons 15, 16. Thus, torque transmission characteristics can be changed with a simple mechanism in which a hydraulic pump and control valves are not necessary.