Clutch

Patent metadata

Field	Value
Publication number	US-10393192-B2
Application number	US-201715588922-A
Country	US
Kind code	B2
Filing date	May 8, 2017
Priority date	Nov 24, 2016
Publication date	Aug 27, 2019
Grant date	Aug 27, 2019

Abstract

A clutch may include a hub configured to be constrained to a rotation shaft; a sleeve configured to be straight slidably disposed on an external circumferential surface of the hub; a clutch gear configured to be disposed to be relatively rotatable with respect to the rotation shaft; a first friction ring configured to be mounted between the clutch gear and the hub; a key configured to be mounted between the sleeve and the hub; and a displacement changing portion configured to change a relative rotation displacement of the first friction ring with respect to the hub to an axial linear displacement of the first friction ring.

First claim

What is claimed is:

1. A clutch apparatus, comprising:
a hub configured to be constrained to a rotation shaft;
a sleeve configured to be straight slidably disposed on an external circumferential surface of the hub;
a clutch gear configured to be disposed to be relatively rotatable with respect to the rotation shaft;
a first friction ring configured to be mounted between the clutch gear and the hub and pressed toward the clutch gear to form a frictional force between the clutch gear and the hub to transfer a torque;
a key configured to be mounted between the sleeve and the hub and transfer a linear displacement of the sleeve to the first friction ring before the sleeve makes contact with the first friction ring; and
a displacement changing portion configured to change a relative rotation displacement of the first friction ring with respect to the hub to an axial linear displacement of the first friction ring,
wherein the hub is provided with a hub groove accommodating the key, the first friction ring is provided with a first ring protrusion being inserted into the hub groove, and an internal side of the sleeve is provided with a sleeve protrusion integrally formed on the internal side of the sleeve and inserted into the hub groove to press directly the first ring protrusion axially, and
wherein the displacement changing portion includes:
a first inclined surface formed, at an end part of the hub groove, facing toward the first friction ring, in a shape in which a width thereof is expanded along a circumferential direction of the hub groove; and

a second inclined surface formed at the first ring protrusion of the first friction ring in parallel with the first inclined surface, to contact with the first inclined surface.

2. The clutch apparatus of claim 1 , wherein the key includes:
a support ball elastically supported toward the sleeve protrusion of the sleeve; and
a key spring embedded to give an elastic force to the support ball,
wherein an internal surface of the sleeve protrusion is provided with a sleeve groove wherein a portion of the support ball of the key is configured to be inserted into the sleeve groove.

3. The clutch apparatus of claim 1 , wherein the clutch gear is provided with a clutch cone that has an external diameter decreased while protruding toward the hub, and
middle friction members are mounted between the first friction ring and the clutch cone wherein friction surfaces are formed to overlap each other.

4. The clutch apparatus of claim 3 , wherein the middle friction members include:
a second friction ring configured to have a limited rotation with respect to the hub and have an internal side contacting an external side of the clutch cone; and
a middle cone configured to have a limited rotation with respect to the clutch gear and have an internal side formed to contact an external side of the second friction ring and an external side formed to contact the internal side of the first friction ring.

5. The clutch apparatus of claim 4 , wherein the second friction ring is provided with a plurality of second ring protrusions protruding toward the hub and the hub is provided with a plurality of hub holes into which the second ring protrusions are inserted.

6. The clutch apparatus of claim 4 , wherein the clutch gear has a structure in which a center of the clutch gear is provided with a flange portion, an opposite side of the hub is provided with a gear portion based on the flange portion, and the hub is provided with the clutch cone based on the flange portion.

7. The clutch apparatus of claim 6 , wherein the middle cone is provided with middle cone protrusions protruding toward the flange portion and the flange portion is provided with a plurality of flange holes into which the middle cone protrusions are inserted.

Assignees

• Hyundai Motor Co Ltd

Inventors

• Park Jong Yun
• Kim Yeon Ho
• Hong Sung Wha
• Kim Kyung Ha
• Choi Jae Young

Classifications

• F16D2023/0681

  Double cone synchromesh clutches · CPC title

• F16D2023/065

  Means to provide additional axial force for self-energising, e.g. by using torque from the friction clutch · CPC title

• F16D23/04 Primary

  with an additional friction clutch (synchro rings per se F16D23/025) · CPC title

• F16D2023/0618

  Details of blocking mechanism comprising a helical spring loaded element, e.g. ball · CPC title

• F16D13/34 Primary

  with means for increasing the effective force between the actuating sleeve or equivalent member and the pressure member · CPC title