Resonance Vibration Suppression Patents (Class 280/124.108)
  • Patent number: 10814905
    Abstract: Electric power assisted steering (EPAS) systems for solid axle front suspension vehicles are described. An example EPAS system includes an idler arm having a first end and a second end. The first end of the idler arm is coupled to a frame of the vehicle. The example EPAS system further includes an EPAS rack assembly having an input shaft, a rack, an electric motor, and an output link. The rack is coupled to the input shaft and is movable in response to movement of the input shaft. The electric motor is coupled to the rack. The electric motor provides powered assistance to movement of the rack. The output link has a first end and a second end. The first end of the output link is coupled to the rack. The second end of the output link is coupled to the second end of the idler arm.
    Type: Grant
    Filed: May 21, 2018
    Date of Patent: October 27, 2020
    Assignee: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Jaspal Sohal, Joseph Skynar, Stephen Dockstader, Paul Robert Longworth, Christopher Rolls
  • Patent number: 10473147
    Abstract: The socket assembly includes a housing with an inner bore that extends from a closed end to an open end. A ball portion of a ball stud is received in the inner bore. A shank portion projects through the open end. A backing bearing is disposed in the inner bore and is movable in a radial direction relative to the housing. The backing bearing presents a first bearing surface which is in sliding contact with the ball portion. A radial ring with an annular shape is also disposed in the inner bore of the housing and presents a second bearing surface which is in sliding contact with an equator of the ball portion. An exit bearing is in the inner bore, and the exit bearing has a curved third bearing surface that is in sliding contact with an opposite hemisphere of the ball portion from the first bearing surface.
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: November 12, 2019
    Assignee: Federal-Mogul Motorparts LLC
    Inventors: Eric M. Kopsie, Glen C. Parker
  • Patent number: 10415632
    Abstract: A bearing device includes two co-axially arranged radial spherical bearings and can be used for mounting a pivoting swing arm of a vehicle suspension to a vehicle frame. By using the two radial spherical bearings together the pivot attachment only has a single degree of freedom. The radial spherical bearings are positioned against shoulders in a sleeve of the swing arm and around a spacer sleeve. One or more lubricant grooves are formed at the sliding interface of the bearings. A bushing with a lip holds a lubricant seal for each bearing, and a dust cover protects each lubricant seal. A pivot pin rod is inserted through openings in the vehicle frame and through the two bearings and other components, and is tightened in place such as with a nut.
    Type: Grant
    Filed: February 8, 2018
    Date of Patent: September 17, 2019
    Assignee: Zhejiang CFMOTO Power Co., Ltd.
    Inventor: Xiayang Hu
  • Patent number: 10202014
    Abstract: A twist axle assembly (20) of a vehicle includes a pair of trailing arms (22) and a twist beam (24) extending along an axis (A) between first and second twist beam ends (26, 28). The twist axle assembly (20) further includes a bushing (38) interconnected to each one of the first and second twist beam ends (26, 28) and a respective trailing arm (22) for establishing a weld-less joint between the twist beam (24) and the trailing arm (24). In an embodiment, the twist beam (24) and bushings (38) are tubular, and the bushings (38) are press-fit or molded onto the respective first or second twist beam ends (36, 38). In a further embodiment, the trailing arms (26) define an orifice (40) aligned on the axis (A), and the tubular bushings (38) are press-fit into the orifices (40) of the trailing arms (26) to establish the weld-less joint.
    Type: Grant
    Filed: July 15, 2015
    Date of Patent: February 12, 2019
    Assignee: MAGNA INTERNATIONAL INC.
    Inventors: Darren Andrew Womack, Kevin Richard Langworthy
  • Patent number: 10052929
    Abstract: Bonding the bush to the stabilizer bar, by surface pressure in the bonding surface (inner circumferential surface) of the hole-part of the bush being made uniform, bonding strength is obtained. The first arc part is formed at the opposite side of the opening of the U-shaped part of the bracket in the bonding and second arc part is formed in the opening side, in the hole-part of the bush. The first and second arc parts are circular arc parts being formed in circular arc shape or approximately circular arc shape or are ellipse arc part being formed in the ellipse arc shape or approximately ellipse arc shape. In the hole-part, the center of the first and second arc parts are separated. The curvature radius of the second arc part gets smaller than the curvature radius of the first arc part. The hole-part is formed in an oval shape.
    Type: Grant
    Filed: October 17, 2013
    Date of Patent: August 21, 2018
    Assignee: NHK SPRING CO., LTD.
    Inventors: Shigeru Kuroda, Shuji Ohmura
  • Patent number: 9834060
    Abstract: A bush for a stabilizer is configured so that surface pressure at an adhered surface of a hole of the bush is uniform in adhering the bush to a bar of the stabilizer, whereby necessary adhesive strength is obtained. A bush has a body part that includes a rectangular part with a rectangular shape and a curving part having a curved shape at an outer circumferential part thereof. The body part has a side surface part on which a protruding part is formed so as to protrude outwardly. When contained in a U-shaped part of a bracket shown in FIG. 3B, the rectangular part is arranged at a straight line part of the U-shaped part, the curving part is arranged at a circular arc part of the U-shaped part, and the protruding part is pressed toward the body part by an inner surface of the U-shaped part.
    Type: Grant
    Filed: April 11, 2014
    Date of Patent: December 5, 2017
    Assignee: NHK SPRING CO., LTD.
    Inventor: Shigeru Kuroda
  • Patent number: 9475404
    Abstract: A wheel control device configured to control a plurality of wheels (11-14) mounted on a vehicle (10) includes a controller (110) configured to perform feedback control of a motor (21-24), which is mounted to each of the plurality of wheels (11-14) in order to drive the each of the plurality of wheels, so that a driving torque of the motor follows a target torque. The controller (110) reduces, for a motor driving a subject wheel that has received a predetermined road surface input among the plurality of wheels (11-14), a feedback amount relating to the feedback control to be less than a feedback amount before the subject wheel receives the road surface input.
    Type: Grant
    Filed: October 10, 2012
    Date of Patent: October 25, 2016
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Masatoshi Nakatsu
  • Patent number: 9340253
    Abstract: A shock absorber of a suspension apparatus includes a pair of chambers, a flow passage connects the chambers such that a working fluid passes through the flow passage as the shock absorber expands and contracts, a damping force generation mechanism applies resistance to the working fluid passing through the flow passage, a bypass passage connects the chambers so as to bypass the flow passage, a variable throttle member that is inserted into the bypass passage to be capable of advancing and retreating in order to modify an opening of the bypass passage, an actuator drives the variable throttle member and includes an acting portion disposed on a back surface side of the variable throttle member, and a power transmission mechanism interposed between the acting portion and the variable throttle member in order to transmit a linear motion of the acting portion to the variable throttle member.
    Type: Grant
    Filed: May 20, 2013
    Date of Patent: May 17, 2016
    Assignee: KYB Corporation
    Inventor: Masashi Sumida
  • Patent number: 9248845
    Abstract: A torque support for the articulated mutual support of two elements is provided, for example, a frame or a bogie on the one hand and a housing such as a final drive housing of a rail vehicle on the other hand. The torque support includes a rod, at the two ends of which one respective receiver head is arranged. The receiver head includes a bearing for accommodating a bolt which is used for support on the respective element. The rod is arranged as a sleeve at least in the region of its two ends and the bearing includes a socket which is arranged in the radial direction of the bolt between the bolt and the receiver head and is supported on the receiver head via at least one further bearing element. The socket includes a bulbous section in the manner of a universal ball joint on its outer circumference.
    Type: Grant
    Filed: October 11, 2013
    Date of Patent: February 2, 2016
    Assignee: Voith Patent GmbH
    Inventor: Frank Starbatty
  • Publication number: 20150130153
    Abstract: An automatic control shock absorber system for a bicycle is provided. The system includes one or more sensors. A controller outputs a control signal to a damping adjuster according to the one or more sensors, such that the damping adjuster controls level of damping force based on the sensors.
    Type: Application
    Filed: November 5, 2014
    Publication date: May 14, 2015
    Applicant: GIANT MANUFACTURING CO. LTD
    Inventors: Chien-Hung Chen, Min-Chang Chen, Chung-Wei Lin
  • Publication number: 20140252738
    Abstract: A drive axle for industrial trucks is, by fastening mechanisms, on the one hand able to be connected to the vehicle frame and, on the other hand, connected to the axle housing. Flexible elements that take effect in the main directions of force in such a manner that they are mainly subject to pressure are arranged between the fastening mechanisms and the axle housing.
    Type: Application
    Filed: March 6, 2014
    Publication date: September 11, 2014
    Applicant: ZF Friedrichshafen AG
    Inventors: Wolfgang Klinger, Dirk Bald, Christian Stammberger
  • Patent number: 8770604
    Abstract: A cast or forged suspension trailing arm for suspending a heavy vehicle chassis from a beam-type axle includes an integral axle locating feature.
    Type: Grant
    Filed: December 15, 2003
    Date of Patent: July 8, 2014
    Assignee: Meritor Heavy Vehicle Systems Limited
    Inventors: Garry Brereton, David Chan
  • Patent number: 8706351
    Abstract: Provided is an active noise cancellation apparatus capable of reliably reducing road noise by a technique other than mounting a vibration generator on a floor panel itself or another plate-like interior part itself, while reducing costs and size of the apparatus. A reference signal detector is mounted on a knuckle and the vibration generator is mounted on a wheel housing or a suspension member. An error signal detector detects vibration of the wheel housing or vibration of the suspension member as an error signal, or detects sound in a vehicle interior as an error signal. A controller controls the vibration generator based on the reference signal and the error signal so as to reduce the error signal.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: April 22, 2014
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Koichi Hasegawa, Akira Katagiri, Hideki Oshima
  • Patent number: 8684367
    Abstract: Methods and apparatus for regulating the function of a suspension system are disclosed herein. Suspension characteristics often contribute to the efficiency of a suspended system. Depending on the desired operating parameters of the suspended system, it may be desirable to alter the functional characteristics of the suspension from time to time in order to maintain or increase efficiency. The suspension hereof may be selectively locked into a substantially rigid configuration, and the damping fluid may be phase separated and/or cooled to increase damping rate during use (or offset rate degradation). The suspension hereof may generate power usable to achieve any or all of the foregoing or to be stored for use elsewhere in the suspended system or beyond.
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: April 1, 2014
    Assignee: Fox Factory, Incorporated
    Inventor: David M Haugen
  • Patent number: 8682530
    Abstract: A suspension system for a vehicle, including: an electromagnetic actuator configured to generate an actuator force and including a sprung-side unit connected to a sprung portion, an unsprung-side unit connected to an unsprung portion, and an electromagnetic motor; a connecting mechanism; and a controller including a target-actuator-force determining portion, the determining portion being configured to determine a target actuator force based on: (a) a required acting force that is a force required to act between the sprung and unsprung portions; and (b) an inertial force of one of the sprung-side and unsprung-side units, while utilizing: a first transfer function by which is outputted an amount of a displacement of the one of the sprung-side and unsprung-side units when the actuator force is inputted; and a second transfer function by which is outputted an actual acting force which actually acts between the sprung and unsprung portions when the displacement amount is inputted.
    Type: Grant
    Filed: April 6, 2009
    Date of Patent: March 25, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Tomomichi Nakamura
  • Patent number: 8628101
    Abstract: A bush is adapted to connect a suspension link with a link support member which is one of a wheel support member and a vehicle body member. The bush includes an inner cylinder which extends in a front and rear direction and which is connected with one of the suspension link and the link support member, an outer cylinder which includes an inside circumferential surface confronting an outside circumferential surface of the inner cylinder and which is connected with the other of the suspension link and the link support member, and an elastic member interposed radially between the inner cylinder and the outer cylinder. The inner cylinder is formed with a bulge portion which projects radially outwards from the outside circumferential surface of the inner cylinder at a middle portion of the inner cylinder in an axial direction of the inner cylinder of the link bush.
    Type: Grant
    Filed: March 6, 2012
    Date of Patent: January 14, 2014
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Reo Koide, Keiichi Nakajima, Yoshihiro Kawabe
  • Patent number: 8596430
    Abstract: An electrical shock absorber 20 of the present embodiment includes a motor 21, which is rotated by approaching and separating motions between sprung and unsprung members which approach and separate from each other; and an electric circuit 50, which connects the electric terminals of the motor 21 so as to cause current to flow through the motor 21. The electric circuit 50 includes P-channel JFETs 56, 60. The gate of the P-channel JFET 56, 60 is connected to one electric terminal of the motor 21, and the source of the P-channel JFET 56, 60 is connected to the other electric terminal of the motor 21. Therefore, the induced voltage is applied to the gate. The induced voltage represents the stroke speed of the electrical shock absorber 20. Therefore, the gate voltage VGS is changed on the basis of the above-mentioned relative speed such that the gate voltage VGS increases with the stroke speed of the electrical shock absorber 20.
    Type: Grant
    Filed: June 17, 2010
    Date of Patent: December 3, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Atsushi Ogawa
  • Patent number: 8590910
    Abstract: A trailing arm mounting structure is capable of size reduction as well as weight saving of a trailing arm bracket while ensuring mounting rigidity. In the trailing arm mounting structure, a clearance is formed between an outer sidewall of a side member and an inner sidewall of an extended portion of a side sill. In addition, an inner sidewall of a mounting bracket for a trailing arm is attached to an outer sidewall of the side member while the mounting bracket for the trailing arm is disposed in the clearance. An outer sidewall of the mounting bracket for the trailing arm is attached to the inner sidewall of the extended portion of the side sill, and a base end portion of the trailing arm is supported between the inner sidewall and the outer sidewall of the mounting bracket for the trailing arm.
    Type: Grant
    Filed: August 25, 2011
    Date of Patent: November 26, 2013
    Assignee: Suzuki Motor Corporation
    Inventor: Takayuki Suzuki
  • Patent number: 8587237
    Abstract: A control device configured with an external input estimator that reduces a vibration component of a rotational speed of the power transfer system at a rotational speed of the rotary electric machine and estimates transfer system input torque on the basis of the rotational speed of the rotary electric machine, and that estimates external input torque by subtracting at least output torque of the rotary electric machine from the transfer system input torque. A low-vibration speed calculator calculates a low-vibration rotational speed on the basis of the external input torque and vehicle required torque. A rotational speed controller calculates feedback command torque that matches the rotational speed of the rotary electric machine with the low-vibration rotational speed. A torque command value calculator calculates an output torque command value on the basis of the vehicle required torque and the feedback command torque.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: November 19, 2013
    Assignee: Aisin AW Co., Ltd.
    Inventors: Yasuhiko Kobayashi, Jin Izawa
  • Patent number: 8525453
    Abstract: A damper system for a vehicle including an electromagnetic damper, wherein the electromagnetic damper includes: (i) an electromagnetic motor; (ii) a motion converting mechanism; and (iii) an external circuit including (A) a first connection passage, (B) a second connection passage, (C) a first-connection-passage-current adjuster, and (D) a second-connection-passage-current adjuster, wherein the damper system comprises an external-circuit controller including: (a) a main-adjuster control portion configured to perform, on one of the first-connection-passage-current adjuster and the second-connection-passage-current adjuster that is designated as a main adjuster, a first control for mainly damping the relative vibration of the sprung portion and the unsprung portion; and (b) an auxiliary-adjuster control portion configured to perform, on one of the first-connection-passage-current adjuster and the second-connection-passage-current adjuster that is designated as an auxiliary adjuster, a second control for assisti
    Type: Grant
    Filed: July 8, 2009
    Date of Patent: September 3, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Atsushi Ogawa
  • Publication number: 20120292872
    Abstract: A bush is adapted to connect a suspension link with a link support member which is one of a wheel support member and a vehicle body member. The bush includes an inner cylinder which extends in a front and rear direction and which is connected with one of the suspension link and the link support member, an outer cylinder which includes an inside circumferential surface confronting an outside circumferential surface of the inner cylinder and which is connected with the other of the suspension link and the link support member, and an elastic member interposed radially between the inner cylinder and the outer cylinder. The inner cylinder is formed with a bulge portion which projects radially outwards from the outside circumferential surface of the inner cylinder at a middle portion of the inner cylinder in an axial direction of the inner cylinder of the link bush.
    Type: Application
    Filed: March 6, 2012
    Publication date: November 22, 2012
    Inventors: Reo KOIDE, Keiichi NAKAJIMA, Yoshihiro KAWABE
  • Patent number: 8280585
    Abstract: A control method is provided for an electronically controlled damping system in a vehicle, wherein at least one characteristic quantity varying with different axle load conditions of an axle of the vehicle is determined, a correcting variable is established for an actuator of a vibration damper based on the characteristic quantity and the correcting variable is transmitted to the actuator of the vibration damper to adjust a desired damping behavior of the vibration damper.
    Type: Grant
    Filed: September 9, 2006
    Date of Patent: October 2, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: Michael Harder, Mike Rödder
  • Patent number: 8265825
    Abstract: A suspension system including: (a) a vibration obtaining device configured to obtain vertical vibration of each of at least one of a sprung portion and an unsprung portion of a vehicle; (b) a processing device configured to subject the obtained vibration to a phase advance processing, and having a plurality of characteristics different from each other with respect to a degree by which a phase of the obtained vibration is advanced; (c) a characteristic selector configured to select one of the plurality of characteristics, based on frequency of the obtained vibration of each of at least one of the sprung and unsprung portions, whereby the obtained vibration is subjected to the phase advance processing that is performed in accordance with the selected one of the plurality of characteristics of the processing device; and (d) a suspension controller configured to control a suspension disposed between the sprung and unsprung portions, based on the vibration subjected to the phase advance processing.
    Type: Grant
    Filed: November 21, 2008
    Date of Patent: September 11, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hideonori Kajino, Ryo Kanda
  • Patent number: 8162334
    Abstract: A reinforcement device for a vehicle is formed in a slender shape and comprises a medial region with a hydraulic damper. The damper generates a damping force against deformation in the longitudinal direction. The longitudinal direction is defined as a lateral direction of the associated vehicle body. The reinforcement device is removably mounted at both ends to a frame of the vehicle.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: April 24, 2012
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Katsuhiro Kondou, Masahiro Satou
  • Patent number: 8090500
    Abstract: In a control device for controlling a variable damper of a vehicle suspension system, when a stroke speed of the damper is within a range including a zero stroke speed, the target damping force is determined as a force opposing a current movement of the damper without regards to the direction of the target damping force determined by a target damping force determining unit. Thereby, even when the wheels move vertically at short intervals, the control value is prevented from changing rapidly, and this allows a damping force of an appropriate level to be achieved in a stable manner at all times. Also, the target damping force when a stroke speed of the damper is within a range including a zero stroke speed may be selected to be a relatively high value or low value so that a desired vehicle behavior may be achieved.
    Type: Grant
    Filed: December 6, 2007
    Date of Patent: January 3, 2012
    Assignee: Honda Motor Co., Ltd.
    Inventor: Shigenobu Sekiya
  • Publication number: 20110248464
    Abstract: A suspension device for suspending a mass relative to a substructure. The suspension device comprises a spring/damper arrangement which is disposed between the mass and the substructure and dampens vibrations, and comprises at least one Watt's linkage. At least one of the pivot points of the Watt's linkage is movably connected to the mass and the substructure. The relative position between the pivot point, the mass and the substructure can be adjusted by at least one substantially linearly acting actuator. The suspension device is robust and suitable for determining the vertical degree of freedom of movement of a truck driver's cab, and for damping or preventing undesired movement of the driver's cab. At the same time, undesired rolling or tilting motion of the driver's cab can be actively controlled or prevented by using the actuators.
    Type: Application
    Filed: December 17, 2009
    Publication date: October 13, 2011
    Applicant: ZF FRIEDRICHSHAFEN AG
    Inventors: Manfred Buhl, Matthias Quaing, Friedhelm Langhorst, Karl Lorenz, Kerstin Lahmann, Jens Eismann
  • Patent number: 7946600
    Abstract: In a torsion beam wheel suspension system, a stabilizer bush made of resilient material is received in a hollow interior of a torsion beam that connect intermediate points of a pair of trailing arms, and retains an intermediate part of the stabilizer to the torsion beam. A bracket including a pair of vertical walls opposing lateral sides of the stabilizer bush is attached to a part of the torsion beam to prevent the lateral shifting of the stabilizer bush without any part of the bracket or stabilizer bush restraining the torsional deformation of the stabilizer or torsion beam. The vertical walls may be spaced apart from the stabilizer bush. The structure is not costly and does not cause any complication or difficulty in the assembly work of the rear wheel suspension system. The bracket may have dual purposes of retaining the stabilizer bush and supporting a dynamic damper.
    Type: Grant
    Filed: September 17, 2008
    Date of Patent: May 24, 2011
    Assignee: Honda Motor Co., Ltd.
    Inventor: Akira Kobayashi
  • Patent number: 7938410
    Abstract: In a suspension system for a vehicle, a suspension spring, an absorber for controllably changing the damping coefficient becoming the reference of amount of its own generating damping force, a displacement force generator for controllably generating a displacement force are arranged in parallel between sprung and unsprung members. A vibration damping control is executed based on a so-called skyhook damper theory by utilizing the displacement force. In execution of the vibration damping control, when a sign of sprung-member absolute velocity Vu and a sign of sprung/unsprung-members velocity difference ?V are the same to each other, a damping-coefficient increasing control is executed to set a target damping coefficient C* of the absorber to a coefficient value C2 that is larger than a coefficient value C1 to which the target damping coefficient C* is set when the sign of sprung-member absolute velocity Vu and the sign of sprung/unsprung-members velocity difference ?V are different from each other.
    Type: Grant
    Filed: September 3, 2007
    Date of Patent: May 10, 2011
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Shuuichi Buma, Kazuaki Sugiyama
  • Publication number: 20110042914
    Abstract: An upper support apparatus for use in a suspension system of a vehicle is disclosed, wherein the apparatus includes an upper support plate defining at least one aperture, the upper support plate coupled to a body of the vehicle. The upper support apparatus further includes a resilient member coupled to an underside of the upper support plate, wherein at least one portion of the resilient member is adapted to protrude through the at least one aperture and wherein the at least one portion of the resilient member prevents direct contact between the upper support plate and the body of the vehicle.
    Type: Application
    Filed: August 21, 2009
    Publication date: February 24, 2011
    Inventors: Ajay M. Hirve, Mikhal el Arculli
  • Patent number: 7891683
    Abstract: A torsion-beam rear axle of a vehicle, more preferably motor vehicle, is provided with two rigid trailing arms, which with their one end are each mounted on a vehicle body in a manner capable of being swiveled and at the other end of which a wheel carrier is each attached for the rotatable mounting of a vehicle wheel about its wheel center axis, as well as with a torsionally soft cross-tie connecting the two trailing arms with each other. Each wheel carrier, by means of at least three elastic wheel carrier bearings is fixed to the trailing arm when viewed in forward driving direction of the vehicle, at least two wheel carrier bearings are arranged behind the wheel center axis, and at least one wheel carrier bearing is arranged in front of the wheel center axis in such a manner that through the two wheel carrier bearings arranged behind the wheel center axis to define a swivel axis for the swiveling of the wheel carrier relative to the trailing arm.
    Type: Grant
    Filed: September 9, 2008
    Date of Patent: February 22, 2011
    Assignee: GM Global Technology Operations LLC
    Inventors: Gerd Bitz, Jürgen Siebeneick, Eckhardt Döhrer
  • Patent number: 7845661
    Abstract: A reinforcement device for a vehicle is formed in a slender shape and comprises a medial region with a hydraulic damper. The damper generates a damping force against deformation in the longitudinal direction. The longitudinal direction is defined as a lateral direction of the associated vehicle body. The reinforcement device is removably mounted at both ends to a frame of the vehicle.
    Type: Grant
    Filed: December 14, 2005
    Date of Patent: December 7, 2010
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Katsuhiro Kondou, Masahiro Satou
  • Publication number: 20100207344
    Abstract: A suspension system for a vehicle, including: an electromagnetic actuator configured to generate an actuator force and including a sprung-side unit connected to a sprung portion, an unsprung-side unit connected to an unsprung portion, and an electromagnetic motor; a connecting mechanism; and a controller including a target-actuator-force determining portion, the determining portion being configured to determine a target actuator force based on: (a) a required acting force that is a force required to act between the sprung and unsprung portions; and (b) an inertial force of one of the sprung-side and unsprung-side units, while utilizing: a first transfer function by which is outputted an amount of a displacement of the one of the sprung-side and unsprung-side units when the actuator force is inputted; and a second transfer function by which is outputted an actual acting force which actually acts between the sprung and unsprung portions when the displacement amount is inputted.
    Type: Application
    Filed: April 6, 2009
    Publication date: August 19, 2010
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Tomomichi Nakamura
  • Patent number: 7669866
    Abstract: A suspension trailing arm suspends a vehicle chassis from a beam type axle. The trailing arm includes a chassis mounting feature, an axle mounting feature, and an arm portion intermediate the chassis mounting feature and the axle mounting feature. The arm portion has a generally X-section profile with four limbs.
    Type: Grant
    Filed: June 2, 2006
    Date of Patent: March 2, 2010
    Assignee: Meritor Heavy Vehicles Systems Limited
    Inventors: Martin Peaker, David Chan
  • Patent number: 7658392
    Abstract: Disclosed is a suspension apparatus which can be used in rear-wheel drive, front-wheel drive, or all-wheel drive type small automobiles, so as to rapidly absorb shock or vibration transmitted from wheels by use of four shock-absorbing devices. The suspension apparatus for a small car is mounted to front and rear axles including wheels and adapted to remove vibration or shock transmitted from the wheels. The suspension apparatus includes a plurality of shock-absorbing devices for absorbing shock or vibration transmitted from the wheels by use of the compressive restoring force of air or gas and the elasticity of tubes, or by use of the absorptive restoring force of oil and the elasticity of tubes.
    Type: Grant
    Filed: February 12, 2007
    Date of Patent: February 9, 2010
    Assignee: Sungjin Machinery Co., Ltd.
    Inventor: Jin-uk Kim
  • Publication number: 20090294202
    Abstract: A noise reduction device of a motor driven power steering system may include a worm gear shaft, one end of which is connected with a tilt bearing that is coupled to a housing and rotatably supports the worm gear shaft, a driving shaft connected to a motor, a power transmission member integrally fitted with the driving shaft of the motor, a coupling connected to one end of the driving shaft of the motor and integrally coupling the driving shaft of the motor to the worm gear shaft to be rotatable therebetween, wherein the coupling includes a coupling body, and an elastic cushion member formed on one or both lateral surfaces of the coupling to buffer vibration and/or noise.
    Type: Application
    Filed: December 19, 2008
    Publication date: December 3, 2009
    Applicant: Hyundai Motor Company
    Inventors: Changmoo CHOI, Kyungbok LEE
  • Patent number: 7604247
    Abstract: An extended section is provided on a head of a mounting bolt used to mount attached components, such as a front suspension member, a rear suspension member, and a rear stability brace, to a floor panel of a monocoque body. The extended section extends along the axis of the mounting bolt in a direction opposite to a threaded section. A male screw is formed on the extended section. Mount brackets of the vehicle body vibration damping apparatus can be mounted to the male screw.
    Type: Grant
    Filed: October 25, 2007
    Date of Patent: October 20, 2009
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventor: Katsuhiro Kondou
  • Publication number: 20090224502
    Abstract: An electric damper which does not transmit unbalance wheel vibration to a vehicle body is provided. A low-pass cutoff frequency setting unit and a high-pass cutoff frequency setting unit respectively set the cutoff frequencies for band-stop filters to a frequency band corresponding to unbalance wheel vibration based on a signal indicating a vehicle speed from a vehicle speed sensor, and a function as a band-stop filter comprising a low-pass filter computation unit, a high-pass filter computation unit and an adder is computed for a displacement rate of the vertical motion of a wheel calculated by a differentiating unit in a damper control unit. A damper control amount computation unit calculates a control amount of controlling an electric motor for a motor-driven damper based on the calculated filtered displacement rate, and outputs a control signal to a motor driving unit through a driving circuit output unit.
    Type: Application
    Filed: March 3, 2009
    Publication date: September 10, 2009
    Applicant: HONDA MOTOR CO. LTD.
    Inventors: Shigeru YAMAWAKI, Yasuo Shimizu, Katsuji Watanabe, Atsuhiko Yoneda
  • Publication number: 20090166111
    Abstract: An in-wheel motor includes a rotating electric machine (110) provided at a wheel and applying driving force to the wheel, a housing (134) housing the rotating electric machine and rotatably supporting the wheel, and a vibration damping member (124, 126) provided between the housing (134) and a ball joint (106, 108) as a mounting portion for mounting the housing on a vehicle body.
    Type: Application
    Filed: January 19, 2007
    Publication date: July 2, 2009
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Ryoji Mizutani, Michitaka Tsuchida, Yasuaki Tahara, Atsushi Torii, Yuki Tojima
  • Publication number: 20090026723
    Abstract: Disclosed is a suspension apparatus which can be used in rear-wheel drive, front-wheel drive, or all-wheel drive type small automobiles, so as to rapidly absorb shock or vibration transmitted from wheels by use of four shock-absorbing devices. The suspension apparatus for a small car is mounted to front and rear axles including wheels and adapted to remove vibration or shock transmitted from the wheels. The suspension apparatus includes a plurality of shock-absorbing devices for absorbing shock or vibration transmitted from the wheels by use of the compressive restoring force of air or gas and the elasticity of tubes, or by use of the absorptive restoring force of oil and the elasticity of tubes.
    Type: Application
    Filed: February 12, 2007
    Publication date: January 29, 2009
    Applicant: SUNGJIN MACHINERY CO., LTD.
    Inventor: Jin-uk Kim
  • Publication number: 20080315546
    Abstract: A suspension system of the present invention pivotally supports a wheel of a motor vehicle. An upper control arm and a lower control arm are cooperable with a spindle, which supports the wheel. A vibration damper is cooperable with the upper control arm. A link interconnects the lower control arm and one of the terminal ends of the vibration damper thereby defining a common axis bisecting the link. The vibration damper moves along the common axis to absorb vibration transferred from a road surface and through the wheel.
    Type: Application
    Filed: November 8, 2007
    Publication date: December 25, 2008
    Applicant: RADAR INDUSTRIES, INC.
    Inventors: Robert D. Kucinski, Mark S. Zmyslowski
  • Patent number: 7027897
    Abstract: A mass transit vehicle traction motor control system includes an automatic control block for receiving and processing a tachometer signal having a first resonance signal superimposed thereon to produce a rate request signal having a corresponding second resonance signal superimposed thereon. A filter is provided for decreasing an amplitude of the second resonance signal whereupon the rate request signal is isolated therefrom. A communication and control block and a propulsion and control block co-act to process the isolated rate request signal to produce a speed control signal that is configured to cause a traction motor of a mass transit vehicle to provide motive force to the mass transit vehicle at a rate related to the value of the speed control signal.
    Type: Grant
    Filed: January 27, 2004
    Date of Patent: April 11, 2006
    Assignee: Bombardier Transportation GmbH
    Inventors: Jian Shen, Fred S. Marton, Linda F. Clawson, Kenneth A. Karg
  • Publication number: 20040130081
    Abstract: A method for reducing vibration in an instrument panel structure is achieved by introducing one or more piezoelectric actuator and sensor assemblies between various structures contained within the instrument panel structure. The assembly has a sensor component that senses vibrations between the structures and an actuator component that is activated to produce a reverse sine pulse that dampens the vibrations. The assembly also has an electronic control module, located integrally or as a separate component, electrically to the sensor and actuator for precisely controlling the actuation of the actuator. In alternative embodiments, multiple assemblies may be coupled to a single electronic control module for achieving total system vibration control.
    Type: Application
    Filed: January 6, 2003
    Publication date: July 8, 2004
    Inventors: David A. Hein, Robert J. Adams
  • Patent number: 6688618
    Abstract: An active vibration damper, such as a piezoelectric element (310, 400, 604, 800), a magnetostrictive element (510, 902) or a magnetic shaped alloy, is placed at a connection point (102) between a vehicle suspension component and a vehicle body or frame. The vehicle suspension component, for example, a suspension control arm (100) or shock absorber, determines, in part, noise, vibration and harshness (NVH) characteristics of the vehicle. In addition the vehicle suspension component determines steering and handling of the vehicle. Desirable NVH and good steering and handling are at odds; that is, good steering and handling typically requires a compromise in NVH characteristics. By virtue of the selective placement of vibration dampers in accordance with the invention, good steering and handling are achieved without sacrificing NVH characteristics.
    Type: Grant
    Filed: June 13, 2002
    Date of Patent: February 10, 2004
    Assignee: Ford Global Technologies, LLC
    Inventors: Joseph lynn Schmidt, Randolph Donald Whitney, Diana Chen Mastanduno
  • Patent number: 6637561
    Abstract: A suspension system for a vehicle includes a dynamic absorber mass having a mass smaller than the sprung mass of the vehicle and a spring system supporting the dynamic absorber mass for out-of-phase coaxial motion with the vehicle and tuned to the ride frequency of the vehicle for damping ride frequency perturbations from the vehicle.
    Type: Grant
    Filed: November 11, 1999
    Date of Patent: October 28, 2003
    Assignee: Raytheon Company
    Inventors: David C. Collins, Robin Hossfield, Joaquim A. Bento
  • Patent number: 6595533
    Abstract: A number of embodiments of reinforcing arrangements for vehicle bodies wherein the suspension forces for the ground engaging element are transmitted to the vehicle body and reinforcement is provided in this area. Rather than providing rigid reinforcement, as with the prior art, various forms of damping arrangements are disclosed including those which permit different damping in one direction from the other and utilizing either elastic or hydraulic viscous type dampers.
    Type: Grant
    Filed: November 6, 2001
    Date of Patent: July 22, 2003
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Seiji Sawai, Kouji Sakai
  • Publication number: 20030034624
    Abstract: An active vibration damper, such as a piezoelectric element (310, 400, 604, 800), a magnetostrictive element (510, 902) or a magnetic shaped alloy, is placed at a connection point (102) between a vehicle suspension component and a vehicle body or frame. The vehicle suspension component, for example, a suspension control arm (100) or shock absorber, determines, in part, noise, vibration and harshness (NVH) characteristics of the vehicle. In addition the vehicle suspension component determines steering and handling of the vehicle. Desirable NVH and good steering and handling are at odds; that is, good steering and handling typically requires a compromise in NVH characteristics. By virtue of the selective placement of vibration dampers in accordance with the invention, good steering and handling are achieved without sacrificing NVH characteristics.
    Type: Application
    Filed: June 13, 2002
    Publication date: February 20, 2003
    Applicant: Ford Global Technologies, Inc.
    Inventors: Joseph Lynn Schmidt, Randolph Donald Whitney, Diana Chen Mastanduno
  • Publication number: 20020067016
    Abstract: A four-link suspension system provides an almost infinite amount of adjustments to compensate for changing weather and road conditions. The suspension system includes a main support bracket with a plurality of holes formed therein and a plurality of links attached thereto. Each of the plurality of links has a plurality of holes formed therein for engaging a respective one of the plurality of holes formed in the main support bracket. The particular placement and combination of the holes in the main support bracket and each link, the size of each hold and slot, the shape of each link, the shape of the main support bracket, and the engagement of the links to the main support bracket permit the 4 four-link suspension system to have hundreds of possible instant center (I/C) choices and locations. The assortment of configurations available allow the user to have an ideal four-link suspension system for any particular application.
    Type: Application
    Filed: September 13, 2001
    Publication date: June 6, 2002
    Inventor: Donald S. Ness
  • Patent number: 6224046
    Abstract: A fluid-filled bushing for supporting on a vehicle body an end portion of a suspension arm. The bushing is designed such that the frequency to keep the dynamic spring constant of the fluid-filled bushing to a minimum, or the frequency to keep the loss coefficient of the same to a maximum is set in the vicinity of the rigid resonance frequency f0 (for example, 600 Hz) of the suspension arm. As a result, a transmission force (transmission force N=resonance magnification &ugr;×dynamic spring constant K*) due to the vibration in the vicinity of the above-mentioned rigid resonance frequency transmitted from the road surface through the suspension arm is reduced, so that it is possible to improve road noise.
    Type: Grant
    Filed: January 6, 1999
    Date of Patent: May 1, 2001
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventor: Yasuo Miyamoto