-
公开(公告)号：US11982324B2
公开(公告)日：2024-05-14
申请号：US18222163
申请日：2023-07-14
发明人： Akira Morita , Hirokazu Tsuneda , Yuji Kurematsu
IPC分类号： F16D41/067 , F16C41/00 , F16D41/07
CPC分类号： F16D41/067 , F16C41/001 , F16D41/07
摘要： To provide a cam clutch unit that is easy to handle before assembly, with its components prevented from lifting or detachment, and that allows production with fewer machining steps and a lower level of difficulty, while also enabling unit thickness reduction. The cam clutch unit of the present invention includes: a plurality of cams arranged between an inner race and an outer race; a cage ring having a plurality of pocket portions that restrict relative circumferential movements of the cams; and an annular spring that biases the cams. The cams have an engagement step adapted to engage with the spring on one axial end face. The cage ring has a plurality of hook portions that restrict an axial movement of the annular spring. The hook portions have a pressing part that allows the spring to press the cams towards the other axial end.
-
公开(公告)号：US11499620B2
公开(公告)日：2022-11-15
申请号：US16661128
申请日：2019-10-23
发明人： Yuji Kurematsu , Yudai Takagi , Yuki Mizuno
摘要： To provide a sprocket that reduces the influence of tension fluctuations concurrent with load torque variations to suppress noise and vibration, and that prevents an increase in tension fluctuations, noise, and vibration even when the chain tension is low and the load torque is small, and in regions where engagement between the chain and sprocket is free of the influence of tension. The sprocket has a plurality of seating points for the chain when the chain sits under no load set between adjacent pairs of the teeth such that their radial positions change in a circumferentially continuous manner. The radial positions of the seating points under no load have a variation pattern in which the radial positions increase and decrease depending on circumferential positions of the seating points.
-
公开(公告)号：US11493114B2
公开(公告)日：2022-11-08
申请号：US16728247
申请日：2019-12-27
发明人： Yuji Kurematsu , Kaori Mori
IPC分类号： F16H7/18
摘要： To provide a simple-structured chain guide with improved durability and capable of preventing detachment or breakage of a supplementary member and of reliably reducing vibration and noise. The chain guide includes a supplementary member made of a different material from a guide body. The supplementary member is configured to have an engaging hole, which allows attachment of the supplementary member to a side face of a support wall part provided between a guide part and a base part of the guide body.
-
公开(公告)号：US11231092B2
公开(公告)日：2022-01-25
申请号：US16597089
申请日：2019-10-09
发明人： Yoshitaka Iwasaki , Kaori Mori , Yuji Kurematsu
IPC分类号： F16H7/18
摘要： An object of the present invention is to provide a chain guide that eliminates the burden of assembling a guide shoe and a base member together, and prevents the guide shoe from being limited in its movement in the longitudinal guiding direction relative to the base member to improve durability. The guide shoe and the base member of the chain guide according to the invention are united by being integrally molded. The chain guide includes a fixed engaging part where the guide shoe engages with the base member such that the guide shoe is restricted from moving in the longitudinal guiding direction relative to the base member, and a movable engaging part where the guide shoe engages with the base member such that the guide shoe is slidable relative to the base member. A molding gate mark is positioned at or near the fixed engaging part.
-
公开(公告)号：US11198173B2
公开(公告)日：2021-12-14
申请号：US16505912
申请日：2019-07-09
发明人： Yudai Takagi , Yuji Kurematsu
摘要： To provide a rotating member that allows formation of protrusions to be dug into an opposite surface with a simple configuration, and that can prevent a direction-dependent reduction of anti-slip effect and provide sufficient slip prevention in the direction of torque as well as in the radial direction, and a method of forming this rotating member. The rotating member has a boss and an anti-slip surface on at least one of both axial end faces of the boss. The anti-slip surface includes a plurality of crater-like depressions each having a peripheral protrusion. At least some of the plurality of crater-like depressions are arranged serially to form a plurality of crater chains.
-
公开(公告)号：US11181179B2
公开(公告)日：2021-11-23
申请号：US16364819
申请日：2019-03-26
发明人： Yuji Kurematsu , Kazuyuki Ebinuma , Tsuyoshi Kabai
IPC分类号： F16H55/30
摘要： To provide a sprocket that reduces the influence of tension fluctuations concurrent with load torque variations, that suppresses noise and vibration, and that prevents an increase in tension fluctuations, noise, and vibration even when the chain tension is low and the load torque is small, or in regions where a chain and the sprocket engage without being affected by the tension. The sprocket has a plurality of teeth mating with the chain that are provided with an equal pitch therebetween, and that include teeth with different working pressure angles relative to the chain.
-
公开(公告)号：US11028908B2
公开(公告)日：2021-06-08
申请号：US16161384
申请日：2018-10-16
发明人： Masanori Watanabe , Yuji Kurematsu
IPC分类号： F16H7/08
摘要： To provide a tensioner and a relief valve unit that enable a reduction in the number of parts to be processed and the number of assembling steps, reduce the amount of oil flowing out to the outside, prevent damage to the check valve, and improve the oil recovery rate. The relief valve unit that releases oil when pressure inside an oil pressure chamber reaches or exceeds a predetermined high pressure includes a check valve unit that stops reverse flow of oil flowing into the oil pressure chamber as a valve element, the check valve unit being slidably inserted in the relief valve unit. The relief valve unit includes a unit pressing spring that presses the check valve unit toward a relief valve seat. The check valve unit includes an oil passage for allowing oil to flow between an inner side and an outer side of the check valve unit.
-
公开(公告)号：US20200166105A1
公开(公告)日：2020-05-28
申请号：US16662344
申请日：2019-10-24
发明人： Takahiro Kadono , Yuji Kurematsu
摘要： To provide a simple-structured chain drive mechanism that can reduce the noise generated when the chain sits on the sprocket, prevent deterioration of power transmission efficiency, and retard the progress of wear on the sprocket or chain. The chain drive mechanism includes a sprocket having a plurality of teeth, and a chain having a plurality of link plates and configured to be put around the sprocket. The sprocket includes a pair of flanges protruding circumferentially around the sprocket such as to sandwich the plurality of teeth from sides. The chain includes a pair of seat portions on both sides of the chain so that the flanges abut on the seat portions from a circumferential direction of the sprocket when the chain sits.
-
公开(公告)号：US10260603B2
公开(公告)日：2019-04-16
申请号：US15348046
申请日：2016-11-10
发明人： Yuji Kurematsu
IPC分类号： F16H7/08
摘要： To provide a chain tensioner that can maintain the pressure of the oil pressure chamber at a correct level to achieve a desired reaction force and damping characteristics corresponding to the rpm, and enable a reduction in the number of parts to be machined and the number of assembling steps; reduce the amount of oil flowing out of the system; and prevent damage to the check valve, without causing an increase in size of the chain tensioner. The chain tensioner includes a check valve unit 150 that stops reverse flow of oil flowing into an oil pressure chamber 101, and a first relief valve unit 160 and a second relief valve unit 170 that release oil when the pressure reaches or exceeds a predetermined high level. The second relief valve unit 170 has a higher valve opening pressure than that of the first relief valve unit 160.
-
公开(公告)号：US10107369B2
公开(公告)日：2018-10-23
申请号：US15348067
申请日：2016-11-10
发明人： Yuji Kurematsu
IPC分类号： F16H7/08
摘要： To provide a chain tensioner capable of constantly providing an appropriate reaction force and damping characteristics for a variety of tension fluctuations irrespective of chain elongation, and capable of accommodating the tension fluctuations. The chain tensioner includes a distal end plunger 130 slidably inserted in a distal end bore 121 of a plunger 120, and a distal end biasing means 141 accommodated inside a second oil pressure chamber 102 such as to be able to expand and contract and to urge the distal end plunger 130. The chain tensioner further includes a check valve unit 150 that stops oil flowing from an oil pressure chamber 101 into the second oil pressure chamber 102, and a first relief valve unit 160 that releases oil toward the oil pressure chamber 101 when the pressure reaches or exceeds a predetermined high level.
-
-
-
-
-
-
-
-
-
搜索结果
103 条记录 (耗时 0.019 秒)
