Noise reducing structure of speed reduction device for electric cvvt
AssigneeHyundai Motor Company
InventorsSeungwoo Lee, Hongkil Baek, Bokyung Kim, Inwoong Lyo, Jiyoun Seo
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Abstract
A noise reducing apparatus of a speed reduction device for electric continuous variable valve timing (CVVT), may include the speed reduction device having an inner tooth portion formed to be faced opposing an external wheel of a ball bearing in an interior diameter surface of a housing that may be integrally formed with a sprocket and rollers arranged through a cage between an inner tooth of the inner tooth portion and the external wheel of the ball bearing, wherein a coating layer may be formed to ease impact in exterior circumference portions of the rollers.
Claims11
A noise reducing apparatus of a speed reduction device for electric continuous variable valve timing (CVVT), the speed reduction device comprising:
- an inner tooth portion formed to be faced opposing an external wheel of a ball bearing in an interior diameter surface of a housing that is integrally formed with a sprocket and rollers arranged through a cage between an inner tooth of the inner tooth portion and the external wheel of the ball bearing,
- wherein a coating layer is formed to ease impact in exterior circumference portions of the rollers.
A noise reducing apparatus of a speed reduction device for electric continuous variable valve timing (CVVT), the speed reduction device comprising:
- an inner tooth portion formed to be faced opposing an external wheel of a ball bearing in an interior diameter surface of a housing that is integrally formed with a sprocket and rollers arranged through a cage between an inner tooth of the inner tooth portion and the external wheel of the ball bearing,
- wherein a pocket supporting the roller is formed in the cage, and a coating layer that eases impact is formed in an inner surface of the pocket and a roller contact surface of the inner tooth.
Dependencies are inferred from the claim text.