Patent ID: 9488077
Filing Date: 2016-11-08
CPC Classification: F01L,F03C,F04C

Claim Text:
1. A valve timing control apparatus that is placed in a drive force transmission path, which transmits a drive force from a drive shaft of an internal combustion engine to a driven shaft, to adjust valve timing of a valve that is opened and closed by the driven shaft, wherein one of the drive shaft and the driven shaft serves as a first shaft while another one of the drive shaft and the driven shaft serves as a second shaft, and an oil passage, which opens in an end surface of the second shaft, serves as an external oil passage, the valve timing control apparatus comprising: a housing that is rotatable together with the first shaft; a vane rotor that is placed along an extension of an axis of the second shaft and is rotatable together with the second shaft, wherein the vane rotor forms a vane, which partitions an inside space of the housing into an advancing chamber and a retarding chamber, and the vane rotor includes: an oil passage change valve that is placed in a center portion of the vane rotor and includes: a check valve that is provided between the second shaft and the vane rotor or is provided in an inside of the vane rotor, wherein the check valve enables flow of hydraulic oil from the external oil passage to the supply oil passage and blocks flow of the hydraulic oil from the supply oil passage to the external oil passage; a filter that is placed between the second shaft and the check valve and filters a foreign object contained in the hydraulic oil that flows from the external oil passage to the supply oil passage; and a filter holding body that is a laminated body, which is placed between the second shaft and the vane rotor and includes a plurality of metal plates that are stacked one after another in an axial direction of the vane rotor while the filter is clamped between corresponding two of the plurality of metal plates, wherein the filter holding body includes a connection oil passage that connects between the external oil passage and the supply oil passage, wherein: the plurality of metal plates includes: