-
公开(公告)号：US11598403B2
公开(公告)日：2023-03-07
申请号：US16499125
申请日：2018-03-28
发明人： Warren J. Williams , Marek Frankowski , Jun Xu
IPC分类号： F16D41/20 , F16H55/36 , F16F15/121 , F16F15/129
摘要： In an aspect, an isolation device is provided for a belt and a component shaft in an engine. The device includes a hub, a pulley, an isolation spring and a damping member that is fixed rotationally relative to the hub and is engageable frictionally with the pulley. Torque transmission through the spring below a selected non-zero torque, irrespective of hub load on the pulley, drives a change in radius of the helical coils of the spring that is sufficiently small that the spring avoids pressing the damping member against the pulley. Torque transmission through the spring above the selected non-zero torque, irrespective of hub load on the pulley, drives a change in radius of the helical coils that is sufficiently large that the isolation spring applies a radial force to press the damping member against the pulley so as to generate frictional damping.
-
公开(公告)号：US11174921B2
公开(公告)日：2021-11-16
申请号：US16333199
申请日：2017-09-13
发明人： Michael B. Fischer , Wei Ma
摘要： In an aspect, a V tensioner is provided and includes a first arm and a second arm. A damping structure and a damping system biasing member are provided. The damping system biasing member is positioned axially in between the first and second arms.
-
公开(公告)号：US20210324937A1
公开(公告)日：2021-10-21
申请号：US17273206
申请日：2019-09-10
发明人： Sean KIERAN , Ahmed Abdul Wadood ANWER , Geoffrey William RYELAND , Ron FAREWELL , Kyle PUGSLEY , Frank VERRIET , Andrew Malcolm BOYES
摘要： In an aspect a device for a driven shaft is provided that receives an input torque that varies cyclically between a peak input torque and a low input torque at a peak input torque frequency, which includes a shaft adapter, a rotary drive member, at least one isolation member, a torsional vibration damping structure including an inertia member and a elastomeric damping member, and a supplemental damping structure. The supplemental damping structure applies a supplemental damping torque to resist relative movement between the rotary drive member and the inertia member in addition to damping provided by the elastomeric damping member. A sum of torques including the supplemental damping torque limits a maximum twist between a first end of the driven shaft and a second end of the driven shaft, to below a yield point of the driven shaft.
-
公开(公告)号：US11028897B2
公开(公告)日：2021-06-08
申请号：US16249895
申请日：2019-01-16
发明人： Zhengjie Jia
摘要： In an aspect, a torsional vibration damper is provided, comprising a hub portion that mounts to a crankshaft, an outer ring that includes an inertial mass, a plurality of radial connectors that are elastically deformable and a plurality of spacers that extend circumferentially between the radial connectors and which are elastically deformable by the radial connectors during flexure thereof. The spacers are non-metallic and dissipate energy from deformation via conversion to heat. The plurality of radial connectors have a circumferential spring rate K1a in bending in a circumferential direction about the axis, and have an axial spring rate K1b in bending in an axial direction, wherein K1b is at least 10 times as large as K1a. The plurality of spacers have a circumferential spring rate Kra in the circumferential direction, and an axial spring rate Krb in bending in the axial direction, wherein Kra is less than 1% of K1a.
-
公开(公告)号：US20210140518A1
公开(公告)日：2021-05-13
申请号：US16605971
申请日：2018-05-01
摘要： In an aspect, a tensioner is provided for an endless drive member, and includes a shaft-and-base unit, a tensioner arm, a pulley, and a tensioner spring. The shaft-and-base unit is mountable to be stationary relative to an engine, and includes a fastener aperture for a fastener. The tensioner arm is pivotable relative to the shaft-and-base unit about a tensioner arm axis. The pulley is rotatably mounted to the tensioner arm for rotation and is engageable with an endless drive member. The tensioner spring is positioned to urge the tensioner arm in a first direction relative to the shaft-and-base unit. The tensioner spring includes a plurality of coils that are arranged generally helically about a longitudinal axis and are spaced radially from one another and generally increase in distance away from the axis in a longitudinal direction.
-
公开(公告)号：US10670082B2
公开(公告)日：2020-06-02
申请号：US15617707
申请日：2017-06-08
发明人： Evan J. Hurry
IPC分类号： F16D13/12 , F16D13/74 , B60K25/02 , F02B67/06 , F16D13/76 , F16H55/36 , F16D13/08 , F16D41/20 , F16D7/02 , F16H7/18
摘要： In an aspect, the invention is directed to a clutched device that includes a clutch input member, a clutch output member, and a wrap spring clutch. The wrap spring clutch is engageable with the clutch input member and the clutch output member and has a radially outer surface and a radially inner surface. One of the radially outer and inner surfaces is engageable with a clutch engagement surface on one of the clutch input member and the clutch output member. The clutch engagement surface has a surface finish that includes peaks and valleys, wherein the peaks engage the wrap spring clutch and each have a selected width.
-
公开(公告)号：US10520066B2
公开(公告)日：2019-12-31
申请号：US15322097
申请日：2014-06-26
发明人： Ingo Walter , Michael B. Fischer , Elvis Becirovic
摘要： In an aspect, a tensioner is provided for tensioning an endless drive member that is engaged with a rotary drive member on a shaft of a motive device. The tensioner includes a base that is mountable to the motive device, a ring that is rotatably supported by the base in surrounding relationship with the shaft of the motive device and which is rotatable about a ring axis, a tensioner arm pivotally mounted to the ring for pivotal movement about an arm pivot axis, and first and second tensioner pulleys. The first tensioner pulley is rotatably mounted to the tensioner arm. The tensioner arm is biased towards a first span of the endless drive member on one side of the rotary drive member. The second tensioner pulley is rotatably mounted at least indirectly to the ring and is biased towards a second span of the endless drive member on another side of the rotary drive member. The ring is rotatable in response to hub loads in the first and second tensioner pulleys that result from engagement with the first and second spans of the endless drive member.
-
公开(公告)号：US20190285148A1
公开(公告)日：2019-09-19
申请号：US16305738
申请日：2017-05-30
发明人： Wei MA
摘要： In an aspect, a tensioner is provided for tensioning a belt on an engine, and includes a base mountable to a stationary member, and a first tensioner arm pivotably connected to the base. The first tensioner arm is biased in a first pivot direction. The tensioner includes a first bumper on one of the base and the first tensioner arm, which is engageable with a first travel limiter on the other of the base and the first tensioner arm to limit travel of the first tensioner arm in a second pivot direction, and a first pulley rotatably mounted to the first tensioner arm and positioned to engage a first section of the belt. The first bumper and the first travel limiter together have a selected first combined spring rate during engagement. The first combined spring rate increases progressively with compression between the first bumper and the first travel limiter.
-
公开(公告)号：US10364854B2
公开(公告)日：2019-07-30
申请号：US15388928
申请日：2016-12-22
摘要： In an aspect, a method is provided for controlling a clutch assembly having first and second rotatable clutch members. The method includes providing a wrap spring clutch having first and second ends. The phase angle between the first and second ends determines a diameter of the wrap spring clutch. One of the clutch members is connected with the first end. The method further includes obtaining a target value indicative of a target speed for the second clutch member, and determining through measurement an actual value that is indicative of an actual speed of the second clutch member. The method further includes changing the phase angle between the first and second ends of the wrap spring clutch to generate a selected amount of slip between the wrap spring clutch and the other of the first and second clutch members, based on the target value and the actual value.
-
公开(公告)号：USRE47454E1
公开(公告)日：2019-06-25
申请号：US15638606
申请日：2017-06-30
发明人： Andrew M. Boyes , Gary J. Spicer
摘要： A clutched driven device (10) having a clutch assembly (16) with a first rotary clutch portion (50), a second rotary clutch portion (52), a bearing (54), a wrap spring (56) and an actuator (60). The first rotary clutch portion has an interior clutch surface (76). The first and second rotary clutch portions are rotatably disposed about a rotary axis (70) of the clutched driven device. The bearing is received between the first and second rotary clutch portions and supports the first rotary clutch portion for rotation on the second rotary clutch portion. The wrap spring is disposed radially inwardly of the bearing and has a plurality of helical coils (114) that are received against the interior clutch surface. The actuator is configured to selectively initiate coiling of the wrap spring to cause the helical coils of the wrap spring to disengage the interior clutch surface to a predetermined extent.
-
-
-
-
-
-
-
-
-
搜索结果
158 条记录 (耗时 0.028 秒)
