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公开(公告)号：US10927771B2
公开(公告)日：2021-02-23
申请号：US16701926
申请日：2019-12-03
发明人： Hyeonwoo Kim , Kyoung Pyo Ha , Back Sik Kim , Jong Gu Kim
摘要： A continuous variable valve duration apparatus may include a camshaft, a cam unit on which a cam is formed, wherein the camshaft is inserted into the cam unit, a guide bracket having an upper guide boss formed thereon, an internal wheel transmitting rotation of the camshaft to the cam unit, a wheel housing in which the internal wheel is rotatable inserted, wherein the wheel housing includes a guide shaft on which a guide screw thread is formed and the guide shaft is inserted into the upper guide boss to be movable, a worm wheel to which an internal screw thread engaging with the guide screw thread is formed therewithin, and to which an external screw thread is formed thereon, and a control shaft on which a control worm engaging with the external screw thread is formed.
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公开(公告)号：US10436080B2
公开(公告)日：2019-10-08
申请号：US15833405
申请日：2017-12-06
发明人： Soo Hyung Woo , Jin Wook Son , You Sang Son , Seung Kook Han , Back Sik Kim , Wootae Kim
摘要： A multiple variable valve lift apparatus may include a moving cam formed of a hollow cylindrical shape, configured to be moveable in an axial direction of a camshaft while being rotated with the camshaft, and forming a plurality of cams implementing a cam guide protrusion device and different valve lifts from each other; an operation device selectively guiding a cam guide protrusion device to move the moving cam in the axial direction of the camshaft; a controller configured for controlling an operation of the operation device; a valve opening/closing device in contact with any one cam among the plurality of cams; a plurality of stopper grooves formed at an external circumference of the camshaft; and a stopper device provided at the moving cam and inserted to the stopper groove to be rotated at a position after the moving cam is moved.
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公开(公告)号：US10174643B2
公开(公告)日：2019-01-08
申请号：US15806153
申请日：2017-11-07
发明人： You Sang Son , Ingee Suh , Kiyoung Kwon , In Sang Ryu , Kyoung Pyo Ha , Dongheon Park , Wootae Kim , Back Sik Kim , Seung Jae Lee
摘要： A continuous variable valve duration apparatus may include a camshaft, a cam device on which a cam is formed, of which the camshaft is inserted thereto and of which a relative phase angle with respect to the camshaft is variable, an internal bracket transmitting rotation of the camshaft to the cam device, a wheel housing in which the internal bracket is rotatably inserted and on which a guide groove parallel to the camshaft is formed, a control portion including a control shaft disposed parallel to the camshaft and inserted into the guide groove, and the control portion selectively rotating the control shaft for the relative position of the wheel housing with respect to the camshaft to be changed and a slider housing interposed between the control shaft and the guide groove.
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公开(公告)号：US20180334933A1
公开(公告)日：2018-11-22
申请号：US15833405
申请日：2017-12-06
发明人： Soo Hyung Woo , Jin Wook Son , You Sang Son , Seung Kook Han , Back Sik Kim , Wootae Kim
CPC分类号： F01L13/0036 , F01L1/053 , F01L1/185 , F01L1/34 , F01L2013/0052 , F01L2013/101 , F01L2105/00 , F01L2201/00 , F01L2820/031
摘要： A multiple variable valve lift apparatus may include a moving cam formed of a hollow cylindrical shape, configured to be moveable in an axial direction of a camshaft while being rotated with the camshaft, and forming a plurality of cams implementing a cam guide protrusion device and different valve lifts from each other; an operation device selectively guiding a cam guide protrusion device to move the moving cam in the axial direction of the camshaft; a controller configured for controlling an operation of the operation device; a valve opening/closing device in contact with any one cam among the plurality of cams; a plurality of stopper grooves formed at an external circumference of the camshaft; and a stopper device provided at the moving cam and inserted to the stopper groove to be rotated at a position after the moving cam is moved.
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公开(公告)号：US11306628B2
公开(公告)日：2022-04-19
申请号：US17113012
申请日：2020-12-05
发明人： Hyeon Woo Kim , Kyoung Pyo Ha , Back Sik Kim , Jong Gu Kim
摘要： A continuously variable valve duration apparatus includes a camshaft, a cam unit on which a cam is formed, a guide bracket including an upper guide boss, an internal wheel configured to transmit rotation of the camshaft to the cam unit, a wheel housing in which the internal wheel is rotatably inserted, wherein a guide thread is formed in a portion of the wheel housing, and of which a guide shaft is formed to be movably inserted into the upper guide boss, a worm wheel to which an internal thread engaging with the guide thread is formed in the worm wheel, and to which an external thread is formed thereon, a control shaft on which a control worm engaged with the external thread is formed, and an upper bushing mounted on a lower portion of the upper guide boss to support the guide shaft.
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公开(公告)号：US10815838B1
公开(公告)日：2020-10-27
申请号：US16692512
申请日：2019-11-22
发明人： You Sang Son , In Sang Ryu , Kyoung Pyo Ha , Dongheon Park , Back Sik Kim , Seung Jae Lee
摘要： A continuously variable valve duration apparatus may include a camshaft, a cam unit including a cam, and the camshaft inserted into the cam, a guide shaft on which a guide screw thread is formed and disposed perpendicular to the camshaft, a guide bracket on which the guide shaft is mounted, an inner wheel configured to transmit rotation of the camshaft to the cam unit, a wheel housing into which the inner wheel is rotatably inserted and movable perpendicular to the camshaft, and the wheel housing disposed within the guide bracket, a worm wheel to which an inner screw thread configured to engage with the guide screw thread is formed therewithin, and to which an outer screw thread is formed thereon, and the worm wheel disposed within the wheel housing, a control shaft on which a control worm configured to engage with the outer screw thread is formed.
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公开(公告)号：US10458294B2
公开(公告)日：2019-10-29
申请号：US16001802
申请日：2018-06-06
发明人： Soo Hyung Woo , Back Sik Kim , Seung Kook Han
摘要： A variable valve device for an engine, may include a camshaft; a movable cam device fitted over the camshaft to be slidable in an axial direction of the camshaft, and configured such that cams with at least two different cam profiles and a guide protruding portion are disposed along the axial direction of the camshaft; at least one shaft groove linearly processed to have a predetermined cross-sectional shape in an external circumferential surface of the camshaft along the axial direction thereof; a cam groove provided in an internal circumferential surface of the movable cam device to communicate with the shaft groove; and an insertion member inserted into a communication space defined by the shaft groove and the cam groove such that a rotational displacement of the camshaft is transmitted to the movable cam device.
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公开(公告)号：US11313258B2
公开(公告)日：2022-04-26
申请号：US16909338
申请日：2020-06-23
发明人： You Sang Son , In Sang Ryu , Kyoung-Pyo Ha , Dongheon Park , Back Sik Kim , Seung Jae Lee
摘要： A continuous variable valve duration apparatus includes a cam unit, a cam formed on the cam unit, a camshaft inserted into the cam, a guide bracket, a guide shaft mounted on the guide bracket and disposed perpendicular to the camshaft, wherein a guide screw thread is formed on the guide shaft, a wheel housing disposed within the guide bracket, an inner wheel rotatably inserted into the wheel housing and movable perpendicular to the camshaft, a worm wheel disposed within the wheel housing, wherein an inner screw thread configured to engage with the guide screw thread is formed inside the worm wheel and an outer screw thread is formed on the worm wheel, a control shaft, a control worm formed on the control shaft, and a wheel elastic portion mounted to the wheel housing.
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公开(公告)号：US20190178117A1
公开(公告)日：2019-06-13
申请号：US16001802
申请日：2018-06-06
发明人： Soo Hyung Woo , Back Sik Kim , Seung Kook Han
IPC分类号： F01L13/00
CPC分类号： F01L13/0042 , F01L1/0532 , F01L2013/0052 , F01L2013/101
摘要： A variable valve device for an engine, may include a camshaft; a movable cam device fitted over the camshaft to be slidable in an axial direction of the camshaft, and configured such that cams with at least two different cam profiles and a guide protruding portion are disposed along the axial direction of the camshaft; at least one shaft groove linearly processed to have a predetermined cross-sectional shape in an external circumferential surface of the camshaft along the axial direction thereof; a cam groove provided in an internal circumferential surface of the movable cam device to communicate with the shaft groove; and an insertion member inserted into a communication space defined by the shaft groove and the cam groove such that a rotational displacement of the camshaft is transmitted to the movable cam device.
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公开(公告)号：US20180171834A1
公开(公告)日：2018-06-21
申请号：US15806153
申请日：2017-11-07
发明人： You Sang SON , Ingee Suh , Kiyoung Kwon , In Sang Ryu , Kyoung Pyo Ha , Dongheon Park , Wootae Kim , Back Sik Kim , Seung Jae Lee
CPC分类号： F01L1/34413 , F01L1/047 , F01L1/267 , F01L1/356 , F01L2001/0473
摘要： A continuous variable valve duration apparatus may include a camshaft, a cam device on which a cam is formed, of which the camshaft is inserted thereto and of which a relative phase angle with respect to the camshaft is variable, an internal bracket transmitting rotation of the camshaft to the cam device, a wheel housing in which the internal bracket is rotatably inserted and on which a guide groove parallel to the camshaft is formed, a control portion including a control shaft disposed parallel to the camshaft and inserted into the guide groove, and the control portion selectively rotating the control shaft for the relative position of the wheel housing with respect to the camshaft to be changed and a slider housing interposed between the control shaft and the guide groove.
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