Patent ID: 9004250
Filing Date: 2015-04-14
Classification: F16D

Abstract:
1. A dog clutch for an automated transmission, comprising: a rotary shaft rotatably connecting to one of an input shaft and an output shaft of the automated transmission and provided rotatably about an axial line; a clutch ring rotatably supported by the rotary shaft and rotatably connecting to the other of the input shaft and the output shaft; a hub fixed to the rotary shaft and arranged adjacent to the clutch ring; a sleeve slidably engaging with the hub in a direction of the axial line, the sleeve including a spline, the spline including a plurality of first teeth and a plurality of second teeth, a whole depth of each of the first teeth being greater than a whole depth of each of the second teeth; an axial driving device moving the sleeve in the direction of the axial line; and a dog clutch portion provided at the clutch ring to project towards the sleeve, the dog clutch portion selectively engaging and disengaging relative to the spline formed at the sleeve when the sleeve moves in the direction of the axial line, wherein the dog clutch portion including clutch forward teeth of which an outer diameter is greater than an inner diameter of the first teeth and smaller than an inner diameter of the second teeth, a teeth number of the clutch forward teeth being equal to a teeth number of the first teeth, each of the clutch forward teeth being formed at a position facing each of the first teeth to extend from a front end surface of the dog clutch portion to a rear end position of the dog clutch portion, the dog clutch portion including clutch rearward teeth engageable with tooth grooves formed at the spline and formed to extend from a position retracted by a first predetermined distance from the front end surface of the dog clutch portion to the rear end position of the dog clutch portion, and each of the first teeth and each of the second teeth are both engageable with a clutch tooth groove formed between one of the clutch forward teeth and one of the clutch rearward teeth, and with a clutch tooth groove formed between the clutch rearward teeth adjacent to each other.