Particular Element (e.g., Shift Fork, Template, Etc.) Patents (Class 74/473.36)
  • Patent number: 11933396
    Abstract: A gear shifting mechanism includes a drive motor, a shifting drum, and a first shifting mechanism. The first shifting mechanism includes a first shifting fork, an inner shaft, an outer hub, a first coupling pin, and an elastic component. The elastic component is sleeved on the inner shaft and is located between the inner shaft and the outer hub. There is a first limiting portion and a second limiting portion between the outer hub and the inner shaft. The elastic component is located between the first limiting portion and the second limiting portion. The first limiting portion is connected to one of the outer hub and the inner shaft, and the second limiting portion is connected to the other of the outer hub and the inner shaft.
    Type: Grant
    Filed: March 31, 2022
    Date of Patent: March 19, 2024
    Assignee: Huawei Digital Power Technologies Co., Ltd.
    Inventors: Hu Zhong, Xueyu Mei, Huan Wang
  • Patent number: 11648916
    Abstract: An actuator includes a control part, a first rotation sensor, and a second rotation sensor able to detect rotation of an output shaft. The control part performs a first rotation angle acquisition control for acquiring a target rotation angle of the output shaft when a movable part is moved from the second position to the first position as a first rotation angle. The first rotation angle is a rotation angle of the output shaft that is closer to the second position side than when the movable part abuts the first wall part. In the first rotation angle acquisition control, the control part causes the movable part abuts the first wall part, acquires a rotation angle of the output shaft when the movable part has abutted the first wall part, and calculates the first rotation angle based on the rotation angle of the output shaft that has been acquired.
    Type: Grant
    Filed: February 16, 2020
    Date of Patent: May 16, 2023
    Assignee: NIDEC TOSOK CORPORATION
    Inventors: Kazuhiro Saito, Seiji Hashimoto, Agato Ueno
  • Patent number: 11391370
    Abstract: An actuation assembly for use in a drive unit assembly of a vehicle. The actuation assembly includes an actuator shaft that is connected to a shift shaft and a shift fork via a lever member. At least a portion of the lever member is connected to the shift shaft and at least a portion of the lever member is pivotably connected to said actuator shaft. An actuation mechanism drives the actuator shaft linearly to pivot the lever member which in turn rotates the shift shaft and the shift fork.
    Type: Grant
    Filed: April 12, 2019
    Date of Patent: July 19, 2022
    Assignee: Dana Heavy Vehicle Systems Group, LLC
    Inventors: Daniel D. Carmean, Robert L. Vailliencourt, William F. Waltz
  • Patent number: 10995823
    Abstract: As viewed from a side, an output shaft is disposed rearward of a crankshaft, and an odd-numbered stage shaft and an even-numbered stage shaft are disposed rearward of the crankshaft. Moreover, the odd-numbered stage shaft is provided on a side opposite to the even-numbered stage shaft relative to a line connecting the crankshaft and the output shaft, and a shift drum is disposed on a side opposite to the output shaft relative to a line connecting the odd-numbered stage shaft and the even-numbered stage shaft. This structure reduces dimensions of the power unit for the saddled vehicle.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: May 4, 2021
    Assignee: Honda Motor Co., Ltd.
    Inventors: Jun Adachi, Yoshihisa Kanno, Yoshitaka Nukada, Yoshiaki Tsukada
  • Patent number: 10982765
    Abstract: A shifting system is provided that includes at least one shift fork and shift collar. The at least one shift fork is axially movable on a shift rail. The at least one shift fork further has a second end with spaced side walls and a shift fork pin. The shift collar is axially movable on the shift rail between the spaced side walls of the at least one shift fork. The at least one shift collar has a shift collar pin. A biasing member is configured to bias the at least one shift collar against one of the spaced side walls of the at least one shift fork. A rotating shift drum has at least one shift guide profile that receives at least one of the shift fork pin and the shift collar pin to guide the at least one shift fork during a shift of the shifting system.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: April 20, 2021
    Assignee: TEAM Industries, Inc.
    Inventor: Gregory L. Maki
  • Patent number: 10711892
    Abstract: Described herein is a gearbox for a motor vehicle including a plurality of forward gear ratios and a reverse gear ratio, the gearbox further including: a control device (configured for controlling the selection and the engagement of said forward gear ratios and of said reverse gear ratio; and a plurality of engagement devices that can be controlled by means of said control device for engaging the forward gear ratios or reverse gear ratio (RM) of the gearbox that are operatively associated to said devices. The gearbox includes a locking device, which is electrically controlled and configured for preventing actuation of the engagement device associated to a predetermined forward gear ratio, said locking device being configured for being actuated above a threshold speed of the motor vehicle on which said gearbox is installed.
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: July 14, 2020
    Assignee: C.R.F. Societá Consortile per Azioni
    Inventors: Andrea Piazza, Gianluigi Pregnolato, Lawrence Laba
  • Patent number: 10436318
    Abstract: A controlling apparatus for a transmission capable of returning a shift stage of the transmission to an initial stage is provided. The apparatus includes a first gear component configured to rotate based on a driving force provided from a driving component, an output component configured to generate an operating force to control the transmission an elastic component with a first end fixed and a second end supported by the output component, a driving force transfer component configured to be selectively coupled to the output component to transfer the driving force from the first gear component to the output component and a returning component configured to actuate the driving force transfer component to be separated from the output component. The output component includes a shaft configured to be connected to the transmission, and the first gear component and the driving force transfer component are configured to rotate around the shaft.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: October 8, 2019
    Assignee: SL Corporation
    Inventors: Hong Jun Cha, Young Eon Jung, Tae Won Park, Chang Su Lee, Keon Chan Ahn, Dong Hwan Lee
  • Patent number: 10316934
    Abstract: A vehicle transmission system includes a shift cam rotated by rotary power from an output torque of a gearshift actuator motor to change a gearshift position and a rotational position holding mechanism configured to hold a rotational position of the shift cam. The rotational position holding mechanism has a rotatable member that is rotated in synchronization with the shift cam and has a plurality of indented portions along a rotational direction and a stopper member inserted into the indented portion of the rotatable member to hold a rotational position of the rotatable member. An unindented portion between the plurality of indented portions on the outer circumferential surface of the rotatable member is formed on a circular arc curved surface concentric on a rotation center line.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: June 11, 2019
    Assignee: SUZUKI MOTOR CORPORATION
    Inventors: Hideaki Takahashi, Hiromi Deguchi
  • Patent number: 10295022
    Abstract: A motor has a motor gear installed in a motor output shaft to rotate in synchronization. A gearshift actuation transmission mechanism has a gear shift cam-side actuator gear directly engaged with a gear shift cam to transmit rotation. The gear shift cam-side actuator gear meshes with the motor gear directly or indirectly by interposing another actuator gear to transmit the rotation from the motor to the gear shift cam.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: May 21, 2019
    Assignee: SUZUKI MOTOR CORPORATION
    Inventor: Hideaki Takahashi
  • Patent number: 10174838
    Abstract: A speed change device for a motorcycle has a lost motion mechanism associated with a shift rod of a link mechanism that transmits an operating force applied to a shift operating member to a shift spindle. The speed change device is provided with a shift stroke sensor that detects an amount of expansion/contraction stroke of the shift rod and with a shift spindle sensor that detects rotation of the shift spindle. Further provided is an output control device that controls the output of an internal combustion engine on the basis of detection signals of the shift stroke sensor and the shift spindle sensor. The shift spindle has a detection-target recessed portion formed by recessing a part of a cylindrical outer circumferential surface of the shift spindle. The shift spindle sensor detects the rotation of the shift spindle in cooperation with the detection-target recessed portion.
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: January 8, 2019
    Assignee: Honda Motor Co., Ltd.
    Inventors: Yusuke Nakai, Taito Kobayashi
  • Patent number: 9644725
    Abstract: A two-speed active transfer case is disclosed having a range shift mechanism with a moveable range shift component and a contactless position sensing arrangement for detecting the position of said moveable range shift component.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: May 9, 2017
    Assignee: MAGNA POWERTRAIN OF AMERICA, INC.
    Inventor: Enrique Robles
  • Patent number: 9581238
    Abstract: A device for switching an automatic transmission range includes an actuator, a detent mechanism driven by the actuator and engageable with concave portions, and a control unit. The control unit sets first and second positions of the detent mechanism as first and second target values for positions corresponding to first and second transmission ranges. The first position is detected when the detent mechanism is driven to a limit position, is driven by a first predetermined amount, moves toward a valley of a first concave portion without being driven by the actuator, and then stops naturally. The second position is detected when the detent mechanism is driven by a second predetermined amount to move away from the first target value, move toward a valley of a second concave portion without being driven by the actuator, and then stop naturally.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: February 28, 2017
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventor: Yuji Noto
  • Patent number: 9551417
    Abstract: Described herein is a gearbox for a motor vehicle including a plurality of forward gear ratios and a reverse gear ratio, the gearbox further including: a control device (configured for controlling the selection and the engagement of said forward gear ratios and of said reverse gear ratio; and a plurality of engagement devices that can be controlled by means of said control device for engaging the forward gear ratios or reverse gear ratio (RM) of the gearbox that are operatively associated to said devices. The gearbox includes a locking device, which is electrically controlled and configured for preventing actuation of the engagement device associated to a predetermined forward gear ratio, said locking device being configured for being actuated above a threshold speed of the motor vehicle on which said gearbox is installed.
    Type: Grant
    Filed: February 19, 2014
    Date of Patent: January 24, 2017
    Assignee: C.R.F. SOCIETÀ CONSORTILE PER AZIONI
    Inventors: Andrea Piazza, Gianluigi Pregnolato, Lawrence Laba
  • Patent number: 9541189
    Abstract: A device for switching an automatic transmission range includes an actuator, a detent mechanism driven by the actuator and engageable with concave portions, and a control unit. The control unit sets first and second positions of the detent mechanism as first and second target values for positions corresponding to first and second transmission ranges. The first position is detected when the detent mechanism is driven to a limit position, is driven by a first predetermined amount, moves toward a valley of a first concave portion without being driven by the actuator, and then stops naturally. The second position is detected when the detent mechanism is driven by a second predetermined amount to move away from the first target value, move toward a valley of a second concave portion without being driven by the actuator, and then stop naturally.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: January 10, 2017
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventor: Yuji Noto
  • Patent number: 9285823
    Abstract: Provided is a structure for installing a shift knob to a shift lever in which a rod is provided in an upwardly and downwardly movable manner. The shift knob comprises: a button capable of being manually pushed to allow the rod to be moved downwardly from a lock position to a lock release position; a core installing the button and having a lower tubular portion; and a cover ring covering the lower tubular portion of the core. The structure is configured to allow the cover ring to be fitted onto the lower tubular portion of the core, and thereby locked by the lower tubular portion of the core in a snap fit manner, and to allow the shift lever to be inserted into the lower tubular portion of the core, and thereby locked by the lower tubular portion of the core in a snap fit manner.
    Type: Grant
    Filed: November 1, 2013
    Date of Patent: March 15, 2016
    Assignee: Delta Kogyo Co., Ltd.
    Inventors: Takushi Ujimoto, Mizuho Ueta, Koichiro Hamaka, Takumi Kusayama
  • Patent number: 9150103
    Abstract: An inner assembly that includes first, second and third structures, and a device for removably securing the first, second and third structures to one another. The securing device has at least one double clip which is fixed to the third structure, the double clip having first and second locking elements. The first and second structures have respectively first and second complementary locking elements. The securing device is movable between a locking position in which the first and second locking elements cooperate respectively with the first and second complementary locking elements and lock respectively the first and second structures to the third structure, and a free position in which the first and second locking elements do not cooperate respectively with the first and second complementary locking elements and the first and second structures are free with respect to the third structure.
    Type: Grant
    Filed: November 23, 2011
    Date of Patent: October 6, 2015
    Assignee: Faurecia Interieur Industrie
    Inventor: Vicente Carsi
  • Patent number: 9127757
    Abstract: At least one insert is overmoulded in a body made of a thermoplastic resin. The at least one insert has a modulus of elasticity at least twice as high as that of the thermoplastic resin and is shaped to constitute a selector cooperating with a recess of a selected crosspiece. The thermoplastic resin is capable of linking the function or functions performed by the at least one insert.
    Type: Grant
    Filed: May 31, 2011
    Date of Patent: September 8, 2015
    Assignee: DURA AUTOMOTIVE SYSTEMS SAS
    Inventors: Hugues Blanc, Sebastien Maitre
  • Patent number: 9121499
    Abstract: For actuating a manual transmission in an automated manner, an actuator comprises a gate selection actuating cylinder for selecting a shift gate, a gear selection actuating cylinder for engaging a gear in the shift gate, and a catch device configured to releasably fix one of the gate selection actuating cylinder and a component moveable by the gate selection actuating cylinder in at least one predetermined catch position.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: September 1, 2015
    Assignee: WABCO GmbH
    Inventors: Holger Kelpe, Stefan Klik, Jens Willms
  • Publication number: 20150143939
    Abstract: A transmission device for a vehicle is provided. The transmission device includes a first rotating unit configured to be rotatably coupled to a first rotating axis and a second rotating unit configured to be rotatably coupled to a second rotating axis separated from the first rotating axis. A joint unit is configured to connect the first rotating unit and the second rotating unit to allow the first rotating unit and the second rotating unit to rotate relative to each other. A shift mode selection unit is mounted on at least one of the first rotating unit, the second rotating unit, and the joint unit. Additionally, a driving unit is configured to rotate the second rotating unit about the second rotating axis in response to receiving an operating signal to change an angle between the first rotating unit and the second rotating unit with respect to the joint unit.
    Type: Application
    Filed: November 21, 2014
    Publication date: May 28, 2015
    Inventors: Hong Jun CHA, Jun Hyung SEO
  • Publication number: 20150135879
    Abstract: A structure for mounting a plantable shift lever onto a bracket may include an extending part that protrudes from a front end of the plantable shift lever to extend forward, a dented part formed by denting a front end of the bracket forward to receive the extending part, a first penetrating hole formed to penetrate a rear end of the plantable shift lever in a left and right direction, a second penetrating hole formed to penetrate a rear end of the bracket in the left and right direction and positioned to correspond to the first penetrating hole, and a pin to be inserted into the first penetrating hole and the second penetrating hole to fix the plantable shift lever to the bracket. The plantable shift lever may be coupled to the bracket by inserting the extending part into the dented part and inserting the pin into the first penetrating hole and the second penetrating hole.
    Type: Application
    Filed: October 2, 2014
    Publication date: May 21, 2015
    Applicants: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Won-Jin JEONG, Deok-Ki KIM, Sang-Yoon Kim, Min-Keun KWON, Jeong-Seon MIN, Chang-Hyun LEE, Yang-Rae CHO
  • Publication number: 20150128744
    Abstract: A structure for reducing the effort required to shift gears in a heavy-duty transmission. A shifting fork shaft is arranged in the case of a transmission. A linear bearing is arranged between the outer surface of the shift fork shaft and the inner surface of the case, thus transforming the sliding friction of a large area into the rolling friction of each rolling element of the linear bearing. The present structure effectively reduces the effort required to shift gears, improves shift smoothness and overcomes the poor wear-resistance and damage caused by pulling in conventional shift fork structures, while also reducing the likelihood of irreparable damage to the transmission case caused by over-grinding of holes on said case.
    Type: Application
    Filed: June 7, 2013
    Publication date: May 14, 2015
    Inventors: Yanming Yi, Chongyi Yin, Yi Liu, Lin Yang
  • Patent number: 9027430
    Abstract: A shift drum structure for a drum-type transmission in which a shift fork moving on a shift fork shaft in an axial direction while guided by a guide groove in response to a turn of a shift drum, changes speeds by sliding a shifter member on a transmission driving shaft pivotally supporting a transmission gear, the shift drum. The shift drum includes a cylindrical drum main body and drum spindles projecting outward from drum end walls on the respective two sides of the drum main body, and the guide groove formed in an outer peripheral surface of the drum main body in a circumferential direction, wherein in the shift drum, a work groove is formed in the outer peripheral surface of the drum main body from one end surface to an opposite end surface of the drum main body, or to the guide groove near the opposite end surface.
    Type: Grant
    Filed: September 25, 2013
    Date of Patent: May 12, 2015
    Assignee: Honda Motor Co., Ltd.
    Inventors: Toshimasa Mitsubori, Seiji Hamaoka, Hiromi Sumi, Kazuhiro Norita, Yasushi Fujimoto
  • Publication number: 20150068344
    Abstract: A claw shifting element (1) comprising a sliding sleeve (3), with which the sliding sleeve (3) is axially fixed in its two end positions by frictional locking, is proposed.
    Type: Application
    Filed: September 12, 2014
    Publication date: March 12, 2015
    Inventors: Peter Ziemer, Martin Brehmer, Christoph Margraf, Benjamin Schneider
  • Patent number: 8960041
    Abstract: The disclosure relates to a shifting arrangement for displacing a selector fork of a multispeed transmission assembly along a selector rod. The shifting arrangement has a positioning element which is mounted so as to be rotatable about an axis. The positioning element is connected to the selector fork, which is movably mounted on the selector rod, via a driving mechanism designed for converting the rotational movement of the positioning element into a sliding movement of the selector fork along the selector rod. The shifting arrangement further comprises also has a locking device for locking the selector fork in selected operating positions. The locking device is designed for establishing a locking connection between the positioning element and the selector fork.
    Type: Grant
    Filed: July 27, 2006
    Date of Patent: February 24, 2015
    Assignee: Deere & Company
    Inventor: Frank Buhrke
  • Patent number: 8844392
    Abstract: A control system for controlling a dual clutch transmission having a synchronizer assembly includes a motor for selectively providing an output torque in a first and second to both of a first and a second output member. A one-way device is interconnected to the first output member and is operable to transmit the output torque in the first rotational direction. A pump is connected to the one-way device. A disconnect device is interconnected to the second output member. The torque disconnect device is operable to decouple the motor from a cam or a torque multiplication device. The cam includes at least one groove having a configuration corresponding to synchronizer assembly positions. A shift fork is disposed in the groove and is operable to translate the synchronizer assembly. Rotation of the cam translates the shift fork and the synchronizer assembly between at least a neutral position and an engaged position.
    Type: Grant
    Filed: June 9, 2010
    Date of Patent: September 30, 2014
    Assignee: GM Global Technology Operations, LLC
    Inventors: Vijay A. Neelakantan, Bret M. Olson
  • Publication number: 20140283641
    Abstract: A shifting assembly for a vehicular transmission includes a shift rail having a yoke coupled thereto. A lever may be provided having portions forming an L-shaped slot. The yoke may engage the lever through the slot. The shift rail may be configured to shift the transmission into a forward gear ratio and a reverse gear ratio. The shift rail may be configured to translate along a primary axis in a first direction and in an opposite second direction. A shift fork may be coupled to the shift rail, which is configured to cause the transmission to shift into a forward gear ratio when the shift rail is translated in the first direction to a forward gear engagement position. The yoke may be configured to cause the transmission to shift into a reverse gear ratio when the shift rail is translated in the second direction to a reverse gear engagement position.
    Type: Application
    Filed: March 20, 2013
    Publication date: September 25, 2014
    Applicant: GM Global Technology Operations LLC
    Inventor: GANESHA NEELAPPA
  • Patent number: 8813606
    Abstract: A transmission includes a case having an internal space; a first partition wall which is provided in the case and forms a boundary between a first chamber which is arranged in the case and houses a rotating object, and a second chamber which is arranged in the case, is connected to the first chamber, and maintains equal pressure between the first chamber and outside air; a second partition wall which is provided in the case and forms a boundary between the second chamber and a third chamber which is arranged in the case and stores fluid below the second chamber; and a third partition wall which is provided in the case and forms a boundary between the first chamber and the third chamber. A first hole and a second hole are formed in that order from the first chamber side in the second partition wall.
    Type: Grant
    Filed: August 28, 2009
    Date of Patent: August 26, 2014
    Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin AW Co., Ltd.
    Inventors: Naoki Kato, Masashi Ikemura, Takeshi Ishiwada, Kazuaki Nakamura, Fuminori Monji, Tadanori Fujii, Tatuya Ishiguro, Hiroyuki Ogasawara, Hiroki Goshima
  • Patent number: 8776631
    Abstract: A transmission shift fork engages with a coupling sleeve of a synchronizer and shifting the coupling sleeve. The transmission shift fork includes a first part, second part, and at least one fin. The first part is arranged to movably mount the transmission shift fork in a shift fork movement direction. The second part includes a coupling sleeve facing surface, an outwardly facing surface, and a pair of shift-direction facing surfaces. The coupling sleeve facing surface includes at least one coupling sleeve engagement part arranged to engage with an engaging groove formed on an external circumferential surface of the coupling sleeve. The outwardly facing surface includes an oil catch disposed in a position with respect to the coupling sleeve engagement part such that the oil catch captures lubricating oil and supplies to the coupling sleeve engagement part. The fin projects from inside an oil receiving recess defined by the oil catch.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: July 15, 2014
    Assignee: Aichi Machine Industry Co., Ltd.
    Inventors: Masatoshi Hada, Hitoshi Oya, Kentarou Nakamura, Hiroyuki Momota, Takao Mori
  • Patent number: 8733200
    Abstract: A shifting device of a transmission comprises a selector interlock which can prevent a gear shift shaft from moving into an outer shift gate. The interlock comprises a locking ring which is axially and rotationally movably supported by the shaft. The ring has a stop surface with a tooth and a locking surface and is held by a spring in a rest position. A stop surface of the shaft abuts the tooth when the shaft is moved toward the outer shift gate, before reaching the second inner shift gate. The locking surface of the ring abuts a housing locking surface when the shaft reaches the next shift gate by further displacement of the shaft. The tooth of the ring engages in a recess when the shaft ring rotates to a gear shift position in the next inner shift gate.
    Type: Grant
    Filed: July 7, 2010
    Date of Patent: May 27, 2014
    Assignee: ZF Friedrichshafen AG
    Inventor: Matthias Retsch
  • Patent number: 8726749
    Abstract: Disclosed is an exemplary transmission clutch fork position sensor including an elongated bar and a clutch fork slidably engaging the elongated bar. A yoke bar includes a first end coupled to the clutch fork for concurrent movement therewith. A position sensor operably engages the yoke bar, and is operable for detecting a position of the yoke bar.
    Type: Grant
    Filed: September 25, 2011
    Date of Patent: May 20, 2014
    Assignee: Eaton Corporation
    Inventors: Mark A. Hirsch, Paul J. Mason, Robert B. Craft
  • Patent number: 8726752
    Abstract: A shift securing device of a manual gearbox that is shifted by a selector shaft disposed axially parallel to the gearbox shafts. The selector shaft slides axially and rotates about the longitudinal axis of the selector shaft and can be selectively coupled to a shift fork guided on a shift rail and/or rocker. An axially fixed and rotatable locking body supports locking elements for form-locking the uncoupled shift rail and/or rocker. The locking body is a box frame having two transverse and two longitudinal members. The transverse members have bearing holes in which the selector shaft is accommodated in an axially movable manner. The locking body is rotationally fixed to the selector shaft by a carrier that engages in one of the longitudinal members in a form-locking manner. The locking body is fixed to the housing by an axial bearing disposed on a transverse member.
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: May 20, 2014
    Assignee: ZF Friedrichshafen AG
    Inventor: Uwe Beer
  • Publication number: 20140116180
    Abstract: A connecting device of a vehicle drive-train, located outside a variable-speed transmission, for rotationally coupling a shaft to a drive-train element. A sliding sleeve is rotationally fixed on the shaft but slides axially between first and second positions. In the first position, the shaft is rotationally disengaged from the drive-train element and, in the second position, they are rotationally coupled. An actuator displaces the sliding sleeve between the first and second positions, with a shift groove along a peripheral contour of the sliding sleeve and engagement members for engaging in the groove. The sliding sleeve can rotate and move axially relative to the engagement members and the groove is shaped as a curved guiding such that, when the engagement members engage in the groove and the sliding sleeve rotates relative to the engagement member, the sliding sleeve moves axially between the first and second positions by virtue of the groove.
    Type: Application
    Filed: May 2, 2012
    Publication date: May 1, 2014
    Applicant: ZF FRIEDRICHSHAFEN AG
    Inventors: Reiner Keller, Frank Richter
  • Patent number: 8707814
    Abstract: A shift mechanism that provides a shift mechanism for enabling smooth gear shifting by a transmission, and a vehicle equipped therewith. With this mechanism, a shift drum, to which shift forks are connected via grooves on an outer periphery, is held every predetermined rotation angle. When differences are produced in the degree of rotation between a third rotating member that rotates by motor rotation and a second rotating member that rotates in accordance with the third rotating member, bias is accumulated in a torsion spring. Bias that is accumulated is released when the rotation angle of the third rotating member equals or exceeds a predetermined angle of rotation, rotating a first rotating member via a second rotating member, and rotating the shift drum quickly.
    Type: Grant
    Filed: February 1, 2013
    Date of Patent: April 29, 2014
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventor: Tetsushi Saitoh
  • Publication number: 20140109710
    Abstract: A control device includes an elongated mechanical transmission member (10; 110) interposed between the gearbox and a control member (100) for transmitting to the gearbox the commands imparted through the control member, in such a manner that the gear engaged by means of the gearbox is linked to the linear position of the transmission member (10; 110). The device is provided with a position sensor (26; 126) including a movable reference element (28; 128), the movement of which is univocally determined by the movement of a rigid end portion (14; 114) of the transmission member (10; 110), and a stationary detection element (30) for detecting the position of the reference element (28; 128).
    Type: Application
    Filed: December 24, 2013
    Publication date: April 24, 2014
    Applicant: SILA HOLDING INDUSTRIALE S.P.A.
    Inventors: Guido PANIZZA, Kamal MOURAD, Edoardo MONGARLI
  • Publication number: 20140102238
    Abstract: A shift lever operation structure may include a shift plate, which moves along with a shift lever so that either manual or automatic mode is selected, and has an engaging part. An engaging plate may have a connection part corresponding to the engaging part so that, during the automatic mode, the engaging plate engages with the shift plate, and during the manual mode, the engaging plate is disengaged from the shift plate. An elastic member may be assembled with the connection part of the engaging plate such that the elastic member is deformed by the insertion of the engaging part into the connection part.
    Type: Application
    Filed: August 26, 2013
    Publication date: April 17, 2014
    Applicants: Kia Motors Corp., Hyundai Motor Company
    Inventors: Jee Hyuck Choi, Eun Sik Kim, Jeong Seon Min, Hee Soo Yang, Yang Rae Cho, Sug Jun Youn, Ho Sik Jang
  • Patent number: 8689658
    Abstract: A shift drum drive system for a transmission includes a drive member and a power transmission device configured to transmit the rotational power of the drive member to a shift drum. The drive member and at least a part of the power transmission device being disposed on a lateral side of a crankcase on the side of one end in the axial direction of the shift drum, to reduce the area occupied by the shift drum drive system inclusive of the drive member on a lateral side of the crankcase on the side of one end in the axial direction of the shift drum, and thereby to contrive a reduction in engine size. The drive member and the shift drum are disposed so as to at least partly overlap with each other when viewed along the axial direction of the shift drum.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: April 8, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventors: Atsushi Ogasawara, Yasushi Fujimoto
  • Publication number: 20140083227
    Abstract: A device for selection and engagement of the gears of a gearbox for motor vehicles has a control shaft mounted rotatable and axially movable with respect to the casing. Mounted on the shaft is a hub having an engagement finger for controlling gear engagement devices, which is configured to oscillate in the space between two fingers of a selection mask, which is mounted on the shaft axially movable therewith and is guided with respect to the casing so as not to follow rotation of the shaft and the hub when a gear is engaged. During displacement of the engagement finger towards an extreme position preliminary to the engagement of the reverse gear, the selection mask is forced to move temporarily into a rotated position, wherein it actuates one or more of the selector devices of the forward gears to enable silent engagement of the reverse gear.
    Type: Application
    Filed: June 6, 2013
    Publication date: March 27, 2014
    Applicant: C.R.F. Societa Consortile per Azioni
    Inventors: Marco GARABELLO, Gianluigi PREGNOLATO, Valter PASTORELLO, Andrea PIAZZA
  • Publication number: 20140083228
    Abstract: A shift drum structure for a drum-type transmission in which a shift fork moving on a shift fork shaft in an axial direction while guided by a guide groove in response to a turn of a shift drum, changes speeds by sliding a shifter member on a transmission driving shaft pivotally supporting a transmission gear, the shift drum. The shift drum includes a cylindrical drum main body and drum spindles projecting outward from drum end walls on the respective two sides of the drum main body, and the guide groove formed in an outer peripheral surface of the drum main body in a circumferential direction, wherein in the shift drum, a work groove is formed in the outer peripheral surface of the drum main body from one end surface to an opposite end surface of the drum main body, or to the guide groove near the opposite end surface.
    Type: Application
    Filed: September 25, 2013
    Publication date: March 27, 2014
    Applicant: HONDA MOTOR CO., LTD
    Inventors: Toshimasa Mitsubori, Seiji Hamaoka, Hiromi Sumi, Kazuhiro Norita, Yasushi Fujimoto
  • Patent number: 8677852
    Abstract: A multiplexed electromechanical shift mechanism includes a single linear actuator with multiple independently selectable linkages actuating a clutch and multiple gears for use in motor vehicle transmissions such as a dual clutch transmission. The linear actuator may be a ball screw, a planetary roller screw or hydraulic or pneumatic operator capable of controlling bi-directional linear motion of an output member. A plurality of linear clutches selectively couple the output member to one of a plurality of linkages adapted to transfer the bi-directional motion of the output member. One of the linkages is coupled to and engages an input (main) clutch of the transmission and the remaining linkages are coupled to and bi-directionally translate shift forks and synchronizer clutches which achieve gear selection and engagement.
    Type: Grant
    Filed: February 23, 2010
    Date of Patent: March 25, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Vijay A. Neelakantan, Bret M. Olson, James W. Haynes, Clinton E. Carey
  • Patent number: 8646354
    Abstract: A gear shift unit for an automated manual transmission, may include a shift block that is restricted in the rotational direction and slidably movable along a control shaft, and has a shift finger in order to implement a selecting operation with straight motion thereof and a shifting operation with rotation motion thereof, a driving actuator, a shifting unit selectively engaged with the driving actuator to rotate the control shaft by power of the driving actuator, wherein the shifting unit changes rotational direction of the control shaft in accordance with rotational angles of the driving actuator, and a selecting unit selectively engaged with the driving actuator to slide the shift block along the control shaft by power of the driving actuator while the shifting unit is not driven by the power of the driving actuator.
    Type: Grant
    Filed: June 29, 2010
    Date of Patent: February 11, 2014
    Assignee: Hyundai Motor Company
    Inventor: Wooyeol Jeong
  • Patent number: 8635927
    Abstract: A speed change device for shifting the gear of a transmission by using a cylindrical drum that reciprocally moves and rotates, featuring the structure of a compact size and excellent operability. To execute the shifting operation, the speed change device of the invention uses a cylindrical drum 4 that reciprocally moves in the axial direction and is rotatably supported. Fork pins FP1 to FP4 coupled to a plurality of forks of the transmission are fitted into drum grooves 41 to 44 formed in the cylindrical surface of the cylindrical drum. In each drum groove, there are formed small width portions of a width nearly equal to that of the fork pin and large width portions wider than the small width portions in a manner that the fork pin positioned at the small width portion is shifted. To shift the gear, the cylindrical drum 4 is rotated by a select motor 6 to select the fork pin positioned at the small width portion.
    Type: Grant
    Filed: February 6, 2009
    Date of Patent: January 28, 2014
    Assignee: Isuzu Motors Limited
    Inventors: Kouhei Akashi, Tadashi Ikeda
  • Patent number: 8631719
    Abstract: An arrangement of position transmitters on a selector rod for automatic speed change transmissions in motor vehicles, which interact with housing-mounted position sensors of an electrical speed detection circuit, at least one selector rod on its end regions being movably supported in cross walls of the housing of the transmissions and being actuated by means of a preferably electrohydraulically controlled speed selection unit where the selector rod projects through a through an opening in a cross wall of the transmission, which wall separates the oil compartment into the gear chamber which holds at least the speed selection unit and the position sensors, and the position transmitters are attached directly to the selector rod such that the selector rod with the position transmitters can be mounted through the through the opening as a mounting unit.
    Type: Grant
    Filed: June 22, 2007
    Date of Patent: January 21, 2014
    Assignee: Audi AG
    Inventors: Christian Meixner, Mario Schenker, Johann Märkl
  • Patent number: 8627739
    Abstract: A multiple shift fork, single shift rail assembly reduces weight and complexity in manual and dual clutch transmissions. In a first embodiment, a stationary shift rail includes pluralities of detenting recesses and cooperating detent assemblies are mounted on the shift forks. Associated actuators translate the shift forks and synchronizer clutches. In a second embodiment, the detenting recesses reside on the outside surface of the shift forks and the detent assemblies are mounted in the transmission housing. In a third embodiment, one shift fork is slidably mounted on the shift rail and includes an external detent assembly. The shift rail itself translates and includes detenting recesses and a second shift fork connected thereto.
    Type: Grant
    Filed: September 15, 2009
    Date of Patent: January 14, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Brian E. Tooman, Daryl A. Wilton, Patrick S. Portell, Ryan M. Jenness
  • Patent number: 8616082
    Abstract: The control device comprises an elongated mechanical transmission member (10; 110) interposed between the gearbox and a control member (100) for transmitting to the gearbox the commands imparted through the control member, in such a manner that the gear engaged by means of the gearbox is linked to the linear position of the transmission member (10; 110). The device is provided with a position sensor (26; 126) comprising a movable reference element (28; 128), the movement of which is univocally determined by the movement of a rigid end portion (14; 114) of the transmission member (10; 110), and a stationary detection element (30) for detecting the position of the reference element (28; 128). The reference element (28; 128) is mechanically connected to the rigid end portion (14; 114) and spaced apart from it.
    Type: Grant
    Filed: January 13, 2009
    Date of Patent: December 31, 2013
    Assignee: Sila Holding Industriale S.p.A.
    Inventors: Guido Panizza, Kamal Mourad, Edoardo Mongarli
  • Patent number: 8578809
    Abstract: A shifting device (11, 40) with a servo-assistance mechanism (10), in particular for a transmission (30) of a motor vehicle which comprises an assembly for selecting and engaging a gear of the transmission (30) and an element (20) upon which acts a manual shifting force to be assisted. The servo-assistance mechanism (10) can produce a performance characteristic curve which, as a function of the manual shifting force or a shift phase, has ranges with different gradients or proportions with respect to the manual shifting force. Elements (88, 90, 106, 108), upon which a servo-pressure acts, are present in the servo-assistance mechanism (10) for producing the characteristic. In the control system of the servo-assistance mechanism (10), path limitation units and at least one elastic element (84, 110) are provided, upstream from and/or in the servo-assistance mechanism (10), to limit the servo-assistance force in a path-dependent manner for each gate or gear.
    Type: Grant
    Filed: May 27, 2008
    Date of Patent: November 12, 2013
    Assignee: ZF Friedrichshafen AG
    Inventors: Klaus Spaeth, Dieter Fischer
  • Patent number: 8555743
    Abstract: A shifting apparatus for a manual transmission automatically performs a selecting operation and a shifting operation through the driving of one motor according to a shift step level of a shift lever at the time when a driver operates the shift lever.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: October 15, 2013
    Assignee: Hyundai Motor Company
    Inventor: Myeongju Woo
  • Publication number: 20130263684
    Abstract: A sector plate assembly for a shift mechanism in an automotive vehicle includes a first sector plate being rotatable about an axis and including a peripheral edge having a camming surface. A second sector plate is rotatably coupled to the first sector plate for rotation about the axis. The second sector plate includes an arcuately contoured slot. A biasing member is connected to the first and second sector plates to urge the sector plates toward a predetermined relative position.
    Type: Application
    Filed: July 13, 2011
    Publication date: October 10, 2013
    Applicant: MAGNA POWERTRAIN OF AMERICA, INC.
    Inventor: Chad McCloy
  • Publication number: 20130247706
    Abstract: A gear shift device for a shiftable gear unit of a power tool includes a housing, an operating element, and a transmission member that acts upon a displaceable gear unit component. A bearing sliding guide is disposed in the interior of the housing and configured to slidingly guide the transmission member.
    Type: Application
    Filed: March 26, 2013
    Publication date: September 26, 2013
    Applicant: Robert Bosch GmbH
    Inventor: Thomas Duerr
  • Publication number: 20130233113
    Abstract: A combination torsion spring is configured such that a predetermined reaction force is generated in a coil circumferential direction without a center of a wound coil tilting even when applied with a load. A first torsion spring and a second torsion spring of the combination torsion spring are each provided with a coil. Each coil is formed by spirally winding a copper wire in a different winding direction from one another. The inner diameter of the coil of the first torsion spring is approximately the same as the outer diameter of the coil of the second torsion spring. In the combination torsion spring, the coil of the second torsion spring is inserted into the coil of the first torsion spring.
    Type: Application
    Filed: November 21, 2011
    Publication date: September 12, 2013
    Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventor: Tetsushi Saitoh
  • Patent number: 8522638
    Abstract: A Shift fork is provided for shifting gears of a transmission assembly of a gear box that includes, but is not limited to a basin for collecting splash oil. The basin includes, but is not limited to an outlet channel for guiding the collected oil away from the basin. By means of the basin splash oil can be collected and led via the outlet channel to nearly every place of the transmission assembly, where additional lubrication is wanted. This provides a better lubrication of parts of the transmission assembly with low effort.
    Type: Grant
    Filed: October 27, 2010
    Date of Patent: September 3, 2013
    Assignee: GM Global Technology Operations LLC
    Inventor: Magnus Aberg