Valve timing controller with separating member

Abstract

A valve timing controller includes a first rotating element and a second rotating element. The controller further includes a link mechanism part including arm members for coupling the first and second rotating elements. The controller also includes a gear part including a first gear and a second gear to convert outside rotating torque to control torque for motion of the arm members due to coupling of and relative motion of the first and second gears. Additionally, the controller includes a separation member disposed between the gear part and the link mechanism part for separating a thrust gap of the gear part and a thrust gap of the link mechanism part.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

Other objects, features, and advantages will become more apparent from the following detailed description made with reference to the accompanying drawings, in which like portions are designated by like reference numbers and in which:

FIG. 1 is a cross sectional view of one embodiment of a valve timing controller;

FIG. 2 is a cross sectional view of the valve timing controller taken on line II-II of FIG. 1;

FIG. 3 is a cross sectional view taken on line III-III of FIG. 1;

FIG. 4 is a cross sectional view taken on line IV-IV of FIG. 1;

FIG. 5 is a cross sectional view taken on line V-V of FIG. 1; and

FIG. 6 is a cross sectional view showing another embodiment of the valve timing controller.

Claims

1. A valve timing controller disposed in a drive system which transmits torque of a drive shaft to a driven shaft for opening and closing of a valve to thereby control opening and closing timing of the valve, the valve timing controller comprising: a first rotating element which rotates in association with the drive shaft;a second rotating element which rotates in association with the driven shaft;a link mechanism part including arm members for coupling the first rotating element and the second rotating element as a revolute pair to change a relative rotational phase between the first rotating element and the second rotating element caused by motion of the revolute pair of the arm members;a gear part including a first gear and a second gear to convert outside rotating torque to control torque for the motion of the revolute pair of the arm members due to coupling of and planetary motion of one of the first and second gears relative to the other of the first and second gears; anda separation member disposed between the gear part and the link mechanism part for separating a thrust gap of the gear part and a thrust gap of the link mechanism part.

2. A valve timing controller according to claim 1, wherein: the separation member is provided at one of the first rotating element and the second rotating element,the gear part includes a face and the link mechanism part includes an axial end face that opposes the face of the gear part, andthe separation member extends radially along and between the face of the gear part and the axial end face of the link mechanism part.

3. A valve timing controller according to claim 2, wherein the one of the first rotating element and the second rotating element accommodates the link mechanism part and the gear part therein.

4. A valve timing controller according to claim 2, wherein the one of the first rotating element and the second rotating element includes division rotating element parts divided between the gear part and the link mechanism part, andthe division rotating element parts hold the separation member therebetween.

5. A valve timing controller according to claim 2, wherein: the link mechanism part includes a guide member with the axial end face, engaging with one of the first gear part and the second gear part, and an opposite end face that is opposite to the axial end face and that engages with the arm members.

6. A valve timing controller according to claim 1, further comprising: an input shaft on which outside rotating torque acts, wherein:the input shaft supports the gear part so as to be rotated relatively thereto and is axially adjacent one of the first rotating element and the second rotating element.

7. A valve timing controller according to claim 1, wherein: the thrust gap of at least one of the gear part and the link mechanism part is adjusted by a gap adjusting member.