×

Valve opening/closing timing control apparatus

  • US 10,273,836 B2
  • Filed: 11/09/2017
  • Issued: 04/30/2019
  • Est. Priority Date: 11/14/2016
  • Status: Active Grant
First Claim
Patent Images

1. A valve opening/closing timing control apparatus comprising:

  • a driving side rotator configured to rotate synchronously with a crankshaft of an internal combustion engine;

    a driven side rotator disposed coaxially with a rotation axis of the driving side rotator and configured to rotate integrally with a valve opening/closing camshaft;

    a connecting bolt disposed coaxially with the rotation axis to connect the driven side rotator to the camshaft, and having an advanced angle port and a retarded angle port formed to extend from an outer peripheral surface to an inner space thereof, the advanced angle port and the retarded angle port communicating with an advanced angle chamber and a retarded angle chamber between the driving side rotator and the driven side rotator, respectively; and

    a valve unit disposed in the inner space of the connecting bolt,wherein the valve unit includes a sleeve provided on an inner peripheral surface of the inner space of the connecting bolt, and having an advanced angle communication hole that communicates with the advanced angle port and a retarded angle communication hole that communicates with the retarded angle port,the advanced angle communication hole and the retarded angle communication hole are disposed in a same phase around the rotation axis, and an engagement portion is provided to determine relative postures of the sleeve and the connecting bolt in relation to the connecting bolt around the rotation axis, andthe engagement portion is configured with an engagement recess formed by cutting out a wall portion that is formed in an annular shape in an inner periphery of the inner space and an engagement protrusion formed on an end portion of the sleeve.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×