Patent ID: 7735616
Filing Date: 2010-06-15
Classification: F16D

Abstract:
1. A dog clutch comprising: a driving rotor connected to a driving member and a driven rotor connected to a driven member are coaxially arranged as being opposite each other, and being capable of approaching to be in contact with and moving away from each other; a first engagement portion is provided on a surface of the first driving rotor and a second engagement portion is provided on a surface of the driven rotor, the two surfaces being opposite each other; each of the first and second engagement portions includes a first engagement face and a second engagement face, the first engagement face of the first engagement portion engaging with the first engagement face of the second engagement portion, as the driving rotor and the driven rotor approach to be in contact with each other when driving force of the driving member is generated, and the second engagement face of the first engagement portion engaging with the second engagement face of the second engagement portion, as the driving rotor and the driven rotor approach to contact with each other when the driving member receives driving force from the driven member; and at least one of the first and second engagement portions is formed of at least one projection drawn to a plane perpendicular to a rotational axis of the driving rotor and the driven rotor, an inward extension line of the first engagement face of each of the first and second engagement portions passes through a position offset from the position representing the rotational axis and an inward extension line of the second engagement face of each of the first and second engagement portions passes through the position representing the rotational axis; and each of the first and second engagement portions is formed in a substantially trapezoidal shape with the width along the circumferential direction on the radially outward side being larger than the width along the circumferential direction on the radially inward side.