# US 2014/0196676 A1 · Valve timiing controller

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- Number: US 2014/0196676 A1
- Document ID: US20140196676A1
- Status: Published application
- Kind: A1
- Application number: 14/237,450
- Filed: 2011-09-26
- Published: 2014-07-17
- Earliest claimed: 2011-09-26
- Assignees: Aisin Seiki Kabushiki Kaisha
- Inventors: Yuji Noguchi; Kazunari Adachi; Takeo Asahi
- Web page: https://patentgrep.com/patent/US20140196676A1

## CPC

- F01L 1/3442: {using hydraulic chambers with variable volume to transmit the rotating force}
- F01L 2001/34479: {Sealing of phaser devices}
- F01L 2001/34483: {Phaser return springs}
- F01L 2303/00: Manufacturing of components used in valve arrangements
- F01L: CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES

## Abstract

A valve timing controller includes: a driving-side rolling body configured to rotate synchronously with an engine crankshaft; a driven-side rolling body configured to rotate in a unified manner with a camshaft for opening/closing an engine valve relative to the driving-side rolling body; an advance chamber, and a retard chamber; a torsion spring disposed in a space formed between a front plate or a rear plate of the driving-side rolling body and the driven-side rolling body and configured to bias at all times the driving-side rolling body and the driven-side rolling body in the advance direction or the retard direction; and a first cylindrical portion provided in the front plate or the rear plate and a second cylindrical portion provided in the driven-side rolling body, the first and second cylindrical portions being insertable into each other in an axial direction.

## Claims

### Claim at position 1

1-5. (canceled)

### Claim 6

A valve timing controller comprising:
a driving-side rolling body configured to rotate synchronously with a crankshaft of an internal combustion engine;
a driven-side rolling body which is coaxially held in the driving-side rolling body through a sealing member and is configured to rotate in a unified manner with a camshaft for opening/closing a valve of the internal combustion engine, relative to the driving-side rolling body;
an advance chamber configured to move a relative rotation phase of the driven side rolling body relative to the driving-side rolling body in an advance direction by a volume increase of the advance chamber through an operating oil supply, and a retard chamber configured to move the relative rotation phase in a retard direction by a volume increase of the retard chamber through an operating oil supply, the advance chamber and the retard chamber being formed of the driving-side rolling body and the driven-side rolling body;
a torsion spring which is disposed in a space formed between a front plate or a rear plate of the driving-side rolling body and the driven-side rolling body and is configured to bias at all times the driving-side rolling body and the driven-side rolling body in the advance direction or the retard direction; and
a first cylindrical portion provided in the front plate or the rear plate and a second cylindrical portion representing an inner diameter-side wall of an annular groove formed in an end face on opposite side to a side of the camshaft from among end faces of the driven-side rolling body, the first and second cylindrical portions being insertable into each other in an axial direction.

### Claim 7 (depends on 6)

The valve timing controller according to claim 6, wherein
a recess is provided in one side face of the driven-side rolling body, into which recess an end portion of the camshaft is insertable, and
an opening diameter of the recess is made larger than an inner diameter of a hole formed in the rear plate into which the camshaft is insertable.

### Claim 8 (depends on 6)

The valve timing controller according to claim 6, wherein the first cylindrical portion is set outside the second cylindrical portion.

### Claim 9 (depends on 6)

The valve timing controller according to claim 6, wherein an inner periphery of a hole formed in the rear plate and an outer diameter face of the camshaft constitute a bearing.