Patent ID: 8567579
Filing Date: 2013-10-29
Classification: F16H

Abstract:
1. A clutch apparatus comprising: an input shaft having a bore portion so as to extend from an end portion of the input shaft in an axial direction thereof; a stator shaft formed in a cylindrical shape and provided so as to surround an outer circumferential surface of the input shaft; and a sleeve formed in a cylindrical shape and provided so as to surround an outer circumferential surface of the stator shaft, wherein the stator shaft includes an internal hydraulic passage, a clearance formed between an inner circumferential surface of the sleeve and the outer circumferential surface of the stator shaft serves as a first hydraulic passage, the internal hydraulic passage serves as a second hydraulic passage, a clearance formed between an inner circumferential surface of the stator shaft and the outer circumferential surface of the input shaft serves as a third hydraulic passage, the bore portion formed at the input shaft serves as a fourth hydraulic passage, and wherein the clutch apparatus is configured as a torque converter having a pump impeller, to which a rotational force of an internal combustion engine is inputted, a turbine runner, which receives the rotational force outputted from the pump impeller via an oil and transmits the rotational force to the input shaft, a stator, which is provided between the pump impeller and the turbine runner so as to be positioned radially inwardly of the pump impeller and the turbine runner and which is connectable to the stator shaft via a one-way clutch, an impeller clutch, which is configured so as to establish and interrupt a rotational force transmission from the internal combustion engine to the pump impeller, and a lock-up clutch, which is configured so as to establish and interrupt a rotational force transmission from the internal combustion engine to the turbine runner, and wherein the first hydraulic passage serves as a portion of an impeller clutch actuating hydraulic circuit through which the oil is supplied in order to actuate the impeller clutch, the second hydraulic passage serves as a portion of a supply hydraulic circuit through which the oil is supplied between the pump impeller and the turbine runner, the third hydraulic passage serves as a portion of a release hydraulic circuit through which the oil between the pump impeller and the turbine runner is discharged, and the fourth hydraulic passage serves as a portion of a lock-up clutch actuating hydraulic circuit through which the oil is supplied in order to actuate the lock-up clutch.