US 11,674,416 B2
Valve timing regulator
Yuki Matsunaga, Kariya (JP)
Assigned to DENSO CORPORATION, Kariya (JP)
Filed by DENSO CORPORATION, Kariya (JP)
Filed on Feb. 24, 2021, as Appl. No. 17/183,701.
Application 17/183,701 is a continuation of application No. PCT/JP2019/034014, filed on Aug. 29, 2019.
Claims priority of application No. JP2018-162611 (JP), filed on Aug. 31, 2018.
Prior Publication US 2021/0180477 A1, Jun. 17, 2021
Int. Cl. F01L 1/344 (2006.01); F01L 1/047 (2006.01)
CPC F01L 1/3442 (2013.01) [F01L 1/047 (2013.01)] 16 Claims
OG exemplary drawing
 
16. A valve timing regulator configured to be installed to a driven shaft of an internal combustion engine and regulate valve timing of the internal combustion engine, comprising:
a first rotatable body that is configured to rotate synchronously with a drive shaft of the internal combustion engine;
a second rotatable body that has an opposing surface that is opposed to a shaft end surface, which is an end surface of the driven shaft, wherein the second rotatable body forms a plurality of hydraulic pressure chambers between the first rotatable body and the second rotatable body, and the second rotatable body is configured to be rotated together with the driven shaft relative to the first rotatable body by hydraulic oil supplied to corresponding one or more of the plurality of hydraulic pressure chambers;
a friction shim that is placed between the opposing surface and the shaft end surface and has a first shim contact surface, which is configured to contact the shaft end surface, and a second shim contact surface, which is configured to contact the opposing surface, wherein the friction shim is configured to generate a frictional force between the first shim contact surface and the shaft end surface and a frictional force between the second shim contact surface and the opposing surface after installation of the valve timing regulator to the driven shaft; and
a contact member that has a first member contact surface configured to contact the shaft end surface, wherein:
the contact member is installed to the second rotatable body or the first rotatable body such that the first member contact surface contacts the shaft end surface before occurrence of contact of the first shim contact surface to the shaft end surface or occurrence of contact of the second shim contact surface to the opposing surface at a time of installing the valve timing regulator to the driven shaft;
the first rotatable body has an inner peripheral portion that is shaped in a ring form; and
the contact member is shaped in a ring form and is installed to the first rotatable body such that an outer peripheral portion of the contact member is engaged with the inner peripheral portion of the first rotatable body.