	US 12,012,876 B2
	Cam phase adjuster
Qiwei Qian, Shanghai (CN); Baoyu Jian, Wuxi (CN); and Wenping Guo, Shanghai (CN)
Assigned to Schaeffler Technologies AG & CO. KG, Herzogenaurach (DE)
Appl. No. 18/021,918
Filed by Schaeffler Technologies AG & Co. KG, Herzogenaurach (DE)
PCT Filed Aug. 20, 2020, PCT No. PCT/CN2020/110327 § 371(c)(1), (2) Date Feb. 17, 2023, PCT Pub. No. WO2022/036651, PCT Pub. Date Feb. 24, 2022.
Prior Publication US 2023/0349306 A1, Nov. 2, 2023
Int. Cl. F01L 1/344 (2006.01)

CPC F01L 1/3442 (2013.01) [F01L 2001/34459 (2013.01); F01L 2001/34463 (2013.01); F01L 2001/34466 (2013.01)]

20 Claims

1. A cam phase adjuster, comprising:

a stator,

a rotor rotatably mounted on a radial inner side of the stator,

a front cover fixed to an axial end of the stator, and

at least one locking pin,

a plurality of compartments formed between the rotor and the stator, the rotor being provided with a plurality of blades respectively extending radially into the plurality of compartments, thereby dividing each of the plurality of compartments into an advance cavity and a retard cavity in a circumferential direction, and

the at least one locking pin mounted in a corresponding mounting hole of the rotor, an end portion of the at least one locking pin facing away from the front cover abutting against a bottom of the corresponding mounting hole by a corresponding elastic reset member, and

an end face of the front cover facing the rotor having at least one locking groove configured to receive the at least one locking pin, and an end portion of each one of the at least one locking pin facing the front cover configured to be axially inserted into at least one of the at least one locking groove,

wherein,

the front cover includes unlocking flow channels that fluidly connect the at least one locking groove to one advance cavity and one retard cavity, so that the at least one locking pin can be pushed to axially move away from the front cover by a hydraulic fluid from the one advance cavity and the one retard cavity.