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公开(公告)号：WO1998000653A2
公开(公告)日：1998-01-08
申请号：PCT/US1997010840
申请日：1997-06-05
Applicant: LORD CORPORATION
Inventor： LORD CORPORATION , CARLSON, J., David , ST. CLAIR, Kenneth, A. , CHRZAN, Michael, J. , PRINDLE, Donald, R.
IPC: F16F09/46
CPC classification number: F16F9/067 , F16F9/3214 , F16F9/3242 , F16F9/362 , F16F9/463 , F16F9/535 , F16F2224/00 , F16F2226/02 , F16F2228/004
Abstract: A controllable vibration apparatus such as a linear fluid damper in which an electrical connection to a controllable valve, preferably located in the piston assembly, is made through a single-strand electrical conductor. In one embodiment, the piston and piston rod (24a) are preferably used as the source of low potential (ground or retun electrical path). An accumulator assembly (44a) preferably including a flexible diaphragm (76a) thereon can be used to provide separation of the fluid-containing chambers from a pressurized accumulator chamber. In magnetorheological (MR) fluid dampers, a special sealing system including a defined relationship between surface finish on the piston rod and magnetically soft particle size is described which enhances life of the seal system. A metal bushing (36a) with a friction-reducing surface treatment is used in combination with an energized lip seal (38a) to prevent escape of the magnetic particles from the damper and support side loads. The magnetically controlled valve can be formed from separate top (80a) and bottom (85a) pole pieces that are spaced from an outer annular ring (82a) to define a fluid passageway. The top pole piece and the annular ring can be secured together by bridging elements such as non-magnetic welds, spot welded plates, or alternatively, formed as a single unit using powdered metal processes such as PIM or MIM. The coil assembly (88a) can be configured with axially-extending pins (94a, 96a) to easily connect with a conductor. An elastomeric element (98a) provides electrical and fluid sealing engagement against the single-strand conductor. Push-on connectors (83a) preferably make the connection between the single-strand conductor and the axially extending pins. In a two single-strand conductor version, one single-strand carries the incoming current and the other the outgoing current.
Abstract translation: 诸如线性流体阻尼器的可控振动装置，其中通过单股电导体制成优选位于活塞组件中的可控阀的电连接。 在一个实施例中，活塞和活塞杆（24a）优选用作低电位源（接地或回路电路径）。 优选地在其上包括柔性隔膜（76a）的蓄能器组件（44a）可用于提供含有流体的腔室与加压蓄能室的分离。 在磁流变（MR）流体阻尼器中，描述了一种特殊的密封系统，其包括活塞杆表面光洁度与磁软粒子之间的界定关系，这增强了密封系统的使用寿命。 具有摩擦减小表面处理的金属衬套（36a）与通电的唇形密封件（38a）组合使用，以防止磁性颗粒从阻尼器和支撑侧负载中逸出。 磁力控制阀可由独立的顶部（80a）和底部（85a）的极片形成，该极片与外部环形环（82a）间隔开以限定流体通道。 顶极片和环形圈可以通过诸如非磁性焊缝，点焊板等桥接元件固定在一起，或者使用诸如PIM或MIM之类的金属粉末形成为单个单元。 线圈组件（88a）可以构造成具有轴向延伸的销（94a，96a）以容易地与导体连接。 弹性元件（98a）提供与单股导体的电和流体密封接合。 推连接器（83a）优选地在单股导体和轴向延伸销之间形成连接。 在两条单股导体版本中，一根单股承载输入电流，另一根输出电流输出。
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公开(公告)号：WO1998000649A1
公开(公告)日：1998-01-08
申请号：PCT/US1997008853
申请日：1997-06-05
Applicant: LORD CORPORATION
Inventor： LORD CORPORATION , CARLSON, J., David , LeROY, Douglas, F. , HOLZHEIMER, John, C. , PRINDLE, Donald, R. , MARJORAM, Robert, H.
IPC: F16D63/00
CPC classification number: F16D57/002 , F16D55/00 , F16D57/00 , F16D65/00 , F16D2121/20
Abstract: A controllable brake, such as a magnetorheological (MR) fluid brake (20) including a rotor (28) which is preferably disc-like and rotatably supported by a shaft (30) which is rotatably supported by bushings (42) received within a housing (22). A coil assembly (48) is electrically energized to create a changeable magnetic field within a pole piece (32), which is preferably manufactured from a powdered metal material, which most preferably has a density of between about 6.8 and about 7.0 gm/cm . A magnetically-soft medium, such as an MR fluid (23) which preferably includes magnetically-soft particles disbursed in a carrier liquid is contained within first and second gaps (86 and 88) located between the pole piece (32) and rotor (28). The MR fluid's (23) rheology is controlled by the generated magnetic field to vary the operating torque of the MR brake (20). In one aspect, the brake (20) includes a magnetic saturation zone (25) to reduce the propensity of magnetizing the shaft (30). In another aspect, the pole piece halves (24 and 26) are received in radially spaced pole pockets (37) formed in the housing (22) and preferably include an axial bias spring (70) to ensure intimate contact therebetween. In another aspect, a lip projection (76) traps MR fluid (23) between the lip projection (76) and shaft (30) and minimizes fluid exposure to the shaft seal (44). In another aspect, cooling fins (55) or a projection (53) restrains rotation of the housing (22). In yet another aspect, a spring (46) centers the rotor (28) relative to the housing (22).
Abstract translation: 一种可控制动器，例如磁流变（MR）流体制动器（20），其包括转子（28），该转子优选为盘状并由轴（30）可旋转地支撑，该轴由轴承（42）可旋转地支撑， （22）。 线圈组件（48）被电通电以在极片（32）内产生可变磁场，磁极片优选地由粉末状金属材料制成，其最优选具有约6.8至约7.0g / cm 3的密度， 3>。 包含在位于极片（32）和转子（28）之间的第一和第二间隙（86和88）内的诸如MR液体（23）的磁性软介质包含优选包括载体液体中分布的磁性软颗粒 ）。 MR流体（23）流变学由产生的磁场控制，以改变MR制动器（20）的操作扭矩。 在一个方面，制动器（20）包括磁饱和区（25），以减少磁化轴（30）的倾向。 在另一方面，极片半部（24和26）容纳在形成在壳体（22）中的径向间隔开的磁极腔（37）中，并且优选地包括轴向偏置弹簧（70）以确保其间的紧密接触。 在另一方面，唇突起（76）将唇形突起（76）和轴（30）之间的MR流体（23）捕获并使流体暴露于轴封（44）最小化。 在另一方面，冷却翅片（55）或突起（53）限制壳体（22）的旋转。 在另一方面，弹簧（46）使转子（28）相对于壳体（22）居中。
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公开(公告)号：EP0965006A1
公开(公告)日：1999-12-22
申请号：EP98909008.0
申请日：1998-02-26
Applicant: LORD CORPORATION
Inventor： IVERS, Douglas, E. , CARLSON, J., David , JOLLY, Mark, R. , CHRZAN, Michael, J. , PRINDLE, Donald, R. , ST. CLAIR, Kenneth, A.
CPC classification number: F16F9/46 , F16F9/535 , F16F13/305 , Y10S137/909 , Y10T137/2082 , Y10T137/2191
Abstract: A controllable valve assembly (18) applicable in Magnetorheological (MR) fluid devices (20), such as MR mounts and MR dampers. The valve assembly (18) includes a valve body (32) having a magnetic circuit (40) contained therein which carries magnetic flux ζ, a controllable passageway (42) within the magnetic circuit (40), a MR (magnetically controlled) fluid (44) including soft-magnetic particles in a liquid carrier contained in the controllable passageway (42), a magnetic flux generator, such as a wound wire coil (46), generating magnetic flux ζ which is directed through the MR fluid (44) in the controllable passageway (42) thereby generating 'rheology' changes causing restriction in flow of MR fluid (44) therethrough. In one aspect, a one-way check valve (34) is operative with a passive passageway (36) which is arranged in parallel relationship to the controllable passageway (42) provides 'asymmetric' damping across the controllable valve (18) creating higher pressure differentials in a first direction and a lower in a second direction without 'rapidly switching' the current to the coil (46). In another aspect, 'asymmetric' damping is provided by a 'changeable gap' formed by a moveable wall portion of the controllable passageway (42). In a third aspect, a first controllable passageway provides controllable flow in a first direction and a second controllable passageway provides controllable flow in a second direction, thereby provide 'asymmetry'. In a fourth aspect, 'asymmetry' is provided by a 'variable magnetic short' which changes magnetic circuit reluctance dependent on flow direction.
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Patent Agency Ranking
公开(公告)号：EP1034383B1
公开(公告)日：2004-02-18
申请号：EP98962818.5
申请日：1998-11-20
Applicant: LORD CORPORATION
Inventor： JOLLY, Mark, R. , CARLSON, J., David , PRINDLE, Donald, R.
IPC: F16F1/00
CPC classification number: F16F9/44 , F16F9/20 , F16F9/535 , Y10S137/909
Abstract: An adjustable valve including a passageway, a field responsive fluid within the passageway, and fluid flow adjustment through the passageway. The valve is preferably used in a vibration damper. One damper includes a body, a piston, first and second chambers, a damping valve, a piston rod, an auxiliary chamber, a passageway interconnecting to the auxiliary chamber, a field responsive fluid, a field responsive fluid valve for controlling flow to the auxiliary chamber, and pressurization means. Preferably included is a cavity partition having field responsive fluid disposed on one side and non-field responsive fluid disposed on the other. This allows a reduction of MR fluid allowing use of lighter-weight, less-expensive, hydraulic fluids for flow through the piston's damping valve. In another aspect, the damper includes mechanical adjustment means for manually adjusting the damping level. Adjustment is accomplished by a moveable permanent magnet, moveable pole piece, moveable pole-and-magnet assembly, or magnetic shunt. Manual adjustment may include a knob, lever, or cable actuation. Alternately, magnetic flux is provided by an electromagnet. The valve and damper finds utility in any suspension system where a damper body is attached to a frame component, such as a bicycle frame, and the piston rod is attached to a suspension component, such as a bicycle's swingarm.
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公开(公告)号：EP0907843B1
公开(公告)日：2001-08-01
申请号：EP97930191.8
申请日：1997-06-05
Applicant: LORD CORPORATION
CPC classification number: F16F9/067 , F16F9/3214 , F16F9/3242 , F16F9/362 , F16F9/463 , F16F9/535 , F16F2224/00 , F16F2226/02 , F16F2228/004
Abstract: A controllable vibration apparatus such as a linear fluid damper in which an electrical connection to a controllable valve, preferably located in the piston assembly, is made through a single-strand electrical conductor. In one embodiment, the piston and piston rod (24a) are preferably used as the source of low potential (ground or retun electrical path). An accumulator assembly (44a) preferably including a flexible diaphragm (76a) thereon can be used to provide separation of the fluid-containing chambers from a pressurized accumulator chamber. In magnetorheological (MR) fluid dampers, a special sealing system including a defined relationship between surface finish on the piston rod and magnetically soft particle size is described which enhances life of the seal system. A metal bushing (36a) with a friction-reducing surface treatment is used in combination with an energized lip seal (38a) to prevent escape of the magnetic particles from the damper and support side loads. The magnetically controlled valve can be formed from separate top (80a) and bottom (85a) pole pieces that are spaced from an outer annular ring (82a) to define a fluid passageway. The top pole piece and the annular ring can be secured together by bridging elements such as non-magnetic welds, spot welded plates, or alternatively, formed as a single unit using powdered metal processes such as PIM or MIM. The coil assembly (88a) can be configured with axially-extending pins (94a, 96a) to easily connect with a conductor. An elastomeric element (98a) provides electrical and fluid sealing engagement against the single-strand conductor. Push-on connectors (83a) preferably make the connection between the single-strand conductor and the axially extending pins. In a two single-strand conductor version, one single-strand carries the incoming current and the other the outgoing current.
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公开(公告)号：EP0965006B1
公开(公告)日：2002-10-09
申请号：EP98909008.9
申请日：1998-02-26
Applicant: LORD CORPORATION
Inventor： IVERS, Douglas, E. , CARLSON, J., David , JOLLY, Mark, R. , CHRZAN, Michael, J. , PRINDLE, Donald, R. , ST. CLAIR, Kenneth, A.
CPC classification number: F16F9/46 , F16F9/535 , F16F13/305 , Y10S137/909 , Y10T137/2082 , Y10T137/2191
Abstract: A controllable valve assembly (18) applicable in Magnetorheological (MR) fluid devices (20), such as MR mounts and MR dampers. The valve assembly (18) includes a valve body (32) having a magnetic circuit (40) contained therein which carries magnetic flux ζ, a controllable passageway (42) within the magnetic circuit (40), a MR (magnetically controlled) fluid (44) including soft-magnetic particles in a liquid carrier contained in the controllable passageway (42), a magnetic flux generator, such as a wound wire coil (46), generating magnetic flux ζ which is directed through the MR fluid (44) in the controllable passageway (42) thereby generating 'rheology' changes causing restriction in flow of MR fluid (44) therethrough. In one aspect, a one-way check valve (34) is operative with a passive passageway (36) which is arranged in parallel relationship to the controllable passageway (42) provides 'asymmetric' damping across the controllable valve (18) creating higher pressure differentials in a first direction and a lower in a second direction without 'rapidly switching' the current to the coil (46). In another aspect, 'asymmetric' damping is provided by a 'changeable gap' formed by a moveable wall portion of the controllable passageway (42). In a third aspect, a first controllable passageway provides controllable flow in a first direction and a second controllable passageway provides controllable flow in a second direction, thereby provide 'asymmetry'. In a fourth aspect, 'asymmetry' is provided by a 'variable magnetic short' which changes magnetic circuit reluctance dependent on flow direction.
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公开(公告)号：EP1034383A2
公开(公告)日：2000-09-13
申请号：EP98962818.5
申请日：1998-11-20
Applicant: LORD CORPORATION
Inventor： JOLLY, Mark, R. , CARLSON, J., David , PRINDLE, Donald, R.
IPC: F16F1/00
CPC classification number: F16F9/44 , F16F9/20 , F16F9/535 , Y10S137/909
Abstract: An adjustable valve including a passageway, a field responsive fluid within the passageway, and fluid flow adjustment through the passageway. The valve is preferably used in a vibration damper. One damper includes a body, a piston, first and second chambers, a damping valve, a piston rod, an auxiliary chamber, a passageway interconnecting to the auxiliary chamber, a field responsive fluid, a field responsive fluid valve for controlling flow to the auxiliary chamber, and pressurization means. Preferably included is a cavity partition having field responsive fluid disposed on one side and non-field responsive fluid disposed on the other. This allows a reduction of MR fluid allowing use of lighter-weight, less-expensive, hydraulic fluids for flow through the piston's damping valve. In another aspect, the damper includes mechanical adjustment means for manually adjusting the damping level. Adjustment is accomplished by a moveable permanent magnet, moveable pole piece, moveable pole-and-magnet assembly, or magnetic shunt. Manual adjustment may include a knob, lever, or cable actuation. Alternately, magnetic flux is provided by an electromagnet. The valve and damper finds utility in any suspension system where a damper body is attached to a frame component, such as a bicycle frame, and the piston rod is attached to a suspension component, such as a bicycle's swingarm.
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公开(公告)号：EP0907843A2
公开(公告)日：1999-04-14
申请号：EP97930191.0
申请日：1997-06-05
Applicant: LORD CORPORATION
IPC: F16F9
CPC classification number: F16F9/067 , F16F9/3214 , F16F9/3242 , F16F9/362 , F16F9/463 , F16F9/535 , F16F2224/00 , F16F2226/02 , F16F2228/004
Abstract: A controllable vibration apparatus such as a linear fluid damper in which an electrical connection to a controllable valve, preferably located in the piston assembly, is made through a single-strand electrical conductor. In one embodiment, the piston and piston rod (24a) are preferably used as the source of low potential (ground or retun electrical path). An accumulator assembly (44a) preferably including a flexible diaphragm (76a) thereon can be used to provide separation of the fluid-containing chambers from a pressurized accumulator chamber. In magnetorheological (MR) fluid dampers, a special sealing system including a defined relationship between surface finish on the piston rod and magnetically soft particle size is described which enhances life of the seal system. A metal bushing (36a) with a friction-reducing surface treatment is used in combination with an energized lip seal (38a) to prevent escape of the magnetic particles from the damper and support side loads. The magnetically controlled valve can be formed from separate top (80a) and bottom (85a) pole pieces that are spaced from an outer annular ring (82a) to define a fluid passageway. The top pole piece and the annular ring can be secured together by bridging elements such as non-magnetic welds, spot welded plates, or alternatively, formed as a single unit using powdered metal processes such as PIM or MIM. The coil assembly (88a) can be configured with axially-extending pins (94a, 96a) to easily connect with a conductor. An elastomeric element (98a) provides electrical and fluid sealing engagement against the single-strand conductor. Push-on connectors (83a) preferably make the connection between the single-strand conductor and the axially extending pins. In a two single-strand conductor version, one single-strand carries the incoming current and the other the outgoing current.
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